version 1.1, 2005/02/28 19:08:11
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version 1.3, 2007/10/09 21:41:41
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/**************************************************************************** |
/**************************************************************************** |
* |
* |
* Copyright(c) 2002-2005, John Forkosh Associates, Inc. All rights reserved. |
* Copyright(c) 2002-2006, John Forkosh Associates, Inc. All rights reserved. |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* This file is part of mimeTeX, which is free software. You may redistribute |
* This file is part of mimeTeX, which is free software. You may redistribute |
* and/or modify it under the terms of the GNU General Public License, |
* and/or modify it under the terms of the GNU General Public License, |
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* <img> tag. MimeTeX doesn't need intermediate dvi-to-gif |
* <img> tag. MimeTeX doesn't need intermediate dvi-to-gif |
* conversion, and it doesn't clutter up your filesystem with |
* conversion, and it doesn't clutter up your filesystem with |
* separate little gif files for each converted expression. |
* separate little gif files for each converted expression. |
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* But image caching is available by using mimeTeX's |
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* -DCACHEPATH=\"path/\" compile option (see below). |
* There's also no inherent need to repeatedly write the |
* There's also no inherent need to repeatedly write the |
* cumbersome <img> tag illustrated above. You can write |
* cumbersome <img> tag illustrated above. You can write |
* your own custom tags, or write a wrapper script around |
* your own custom tags, or write a wrapper script around |
* mimeTeX to simplify the necessary notation. |
* mimeTeX to simplify the notation. |
* |
* |
* Functions: ===================== Raster Functions ====================== |
* Functions: ===================== Raster Functions ====================== |
* PART2 --- raster constructor functions --- |
* PART2 --- raster constructor functions --- |
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* rastcpy(rp) allocate new copy of rp |
* rastcpy(rp) allocate new copy of rp |
* subrastcpy(sp) allocate new copy of sp |
* subrastcpy(sp) allocate new copy of sp |
* rastrot(rp) new raster rotated right 90 degrees to rp |
* rastrot(rp) new raster rotated right 90 degrees to rp |
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* rastref(rp,axis) new raster reflected (axis 1=horz,2=vert) |
* rastput(target,source,top,left,isopaque) overlay src on trgt |
* rastput(target,source,top,left,isopaque) overlay src on trgt |
* rastcompose(sp1,sp2,offset2,isalign,isfree) sp2 on top of sp1 |
* rastcompose(sp1,sp2,offset2,isalign,isfree) sp2 on top of sp1 |
* rastcat(sp1,sp2,isfree) concatanate sp1||sp2 |
* rastcat(sp1,sp2,isfree) concatanate sp1||sp2 |
* rastack(sp1,sp2,base,space,iscenter,isfree)stack sp2 atop sp1 |
* rastack(sp1,sp2,base,space,iscenter,isfree)stack sp2 atop sp1 |
* rastile(tiles,ntiles) create composite raster from tiles |
* rastile(tiles,ntiles) create composite raster from tiles |
* rastsquash(sp1,sp2,xmin,ymin) calc #squash pixels sp1||sp2 |
* rastsmash(sp1,sp2,xmin,ymin) calc #smash pixels sp1||sp2 |
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* rastsmashcheck(term) check if term is "safe" to smash |
* --- raster "drawing" functions --- |
* --- raster "drawing" functions --- |
* accent_subraster(accent,width,height) draw \hat\vec\etc |
* accent_subraster(accent,width,height) draw \hat\vec\etc |
* arrow_subraster(width,height,drctn,isBig) left/right arrow |
* arrow_subraster(width,height,drctn,isBig) left/right arrow |
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* circle_recurse(rp,row0,col0,row1,col1,thickness,theta0,theta1) |
* circle_recurse(rp,row0,col0,row1,col1,thickness,theta0,theta1) |
* bezier_raster(rp,r0,c0,r1,c1,rt,ct) draw bezier recursively |
* bezier_raster(rp,r0,c0,r1,c1,rt,ct) draw bezier recursively |
* border_raster(rp,ntop,nbot,isline,isfree)put border around rp |
* border_raster(rp,ntop,nbot,isline,isfree)put border around rp |
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* backspace_raster(rp,nback,pback,minspace,isfree) neg space |
* --- raster (and chardef) output functions --- |
* --- raster (and chardef) output functions --- |
* type_raster(rp,fp) emit ascii dump of rp on file ptr fp |
* type_raster(rp,fp) emit ascii dump of rp on file ptr fp |
* type_bytemap(bp,grayscale,width,height,fp) dump bytemap on fp |
* type_bytemap(bp,grayscale,width,height,fp) dump bytemap on fp |
* xbitmap_raster(rp,fp) emit mime xbitmap of rp on fp |
* xbitmap_raster(rp,fp) emit mime xbitmap of rp on fp |
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* type_pbmpgm(rp,ptype,file) pbm or pgm image of rp to file |
* cstruct_chardef(cp,fp,col1) emit C struct of cp on fp |
* cstruct_chardef(cp,fp,col1) emit C struct of cp on fp |
* cstruct_raster(rp,fp,col1) emit C struct of rp on fp |
* cstruct_raster(rp,fp,col1) emit C struct of rp on fp |
* hex_bitmap(rp,fp,col1,isstr)emit hex dump of rp->pixmap on fp |
* hex_bitmap(rp,fp,col1,isstr)emit hex dump of rp->pixmap on fp |
* --- ancillary output functions --- |
* --- ancillary output functions --- |
* emit_string(fp,col1,string,comment) emit string and C comment |
* emit_string(fp,col1,string,comment) emit string and C comment |
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* gftobitmap(rp) convert .gf-like pixmap to bitmap image |
* ====================== Font Functions ======================= |
* ====================== Font Functions ======================= |
* --- font lookup functions --- |
* --- font lookup functions --- |
* get_symdef(symbol) returns mathchardef for symbol |
* get_symdef(symbol) return mathchardef for symbol |
* get_chardef(symdef,size) returns chardef for symdef,size |
* get_ligature(expr,family) return symtable index for ligature |
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* get_chardef(symdef,size) return chardef for symdef,size |
* get_charsubraster(symdef,size) wrap subraster around chardef |
* get_charsubraster(symdef,size) wrap subraster around chardef |
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* get_symsubraster(symbol,size) returns subraster for symbol |
* --- ancillary font functions --- |
* --- ancillary font functions --- |
* get_baseline(gfdata) determine baseline (in our coords) |
* get_baseline(gfdata) determine baseline (in our coords) |
* get_delim(symbol,height,family) delim just larger than height |
* get_delim(symbol,height,family) delim just larger than height |
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* ================= Tokenize/Parse Functions ================== |
* ================= Tokenize/Parse Functions ================== |
* texchar(expression,chartoken) retruns next char or \sequence |
* texchar(expression,chartoken) retruns next char or \sequence |
* texsubexpr(expr,subexpr,maxsubsz,left,right,isescape,isdelim) |
* texsubexpr(expr,subexpr,maxsubsz,left,right,isescape,isdelim) |
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* texleft(expr,subexpr,maxsubsz,ldelim,rdelim) \left...\right |
* texscripts(expression,subscript,superscript,which)get scripts |
* texscripts(expression,subscript,superscript,which)get scripts |
* --- ancillary parse functions --- |
* --- ancillary parse functions --- |
* isbrace(expression,braces,isescape) check for leading brace |
* isbrace(expression,braces,isescape) check for leading brace |
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* mimeprep(expression) preprocessor converts \left( to \(, etc. |
* mimeprep(expression) preprocessor converts \left( to \(, etc. |
* strchange(nfirst,from,to) change nfirst chars of from to to |
* strchange(nfirst,from,to) change nfirst chars of from to to |
* strreplace(string,from,to,nreplace) change from to to in str |
* strreplace(string,from,to,nreplace) change from to to in str |
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* strwstr(string,substr,white,sublen) find substr in string |
* strtexchr(string,texchr) find texchr in string |
* strtexchr(string,texchr) find texchr in string |
* findbraces(expression,command) find opening { or closing } |
* findbraces(expression,command) find opening { or closing } |
* PART3 =========== Rasterize an Expression (recursively) =========== |
* PART3 =========== Rasterize an Expression (recursively) =========== |
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* rastdispmath(expression,size,sp) scripts for displaymath |
* rastdispmath(expression,size,sp) scripts for displaymath |
* --- table-driven handlers that rasterize... --- |
* --- table-driven handlers that rasterize... --- |
* rastleft(expression,size,basesp,ildelim,arg2,arg3)\left\right |
* rastleft(expression,size,basesp,ildelim,arg2,arg3)\left\right |
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* rastright(expression,size,basesp,ildelim,arg2,arg3) ...\right |
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* rastmiddle(expression,size,basesp,arg1,arg2,arg3) \middle |
* rastflags(expression,size,basesp,flag,value,arg3) set flag |
* rastflags(expression,size,basesp,flag,value,arg3) set flag |
* rastspace(expression,size,basesp,width,isfill,isheight)\,\:\; |
* rastspace(expression,size,basesp,width,isfill,isheight)\,\:\; |
* rastnewline(expression,size,basesp,arg1,arg2,arg3) \\ |
* rastnewline(expression,size,basesp,arg1,arg2,arg3) \\ |
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* rastarray(expression,size,basesp,arg1,arg2,arg3) \array |
* rastarray(expression,size,basesp,arg1,arg2,arg3) \array |
* rastpicture(expression,size,basesp,arg1,arg2,arg3) \picture |
* rastpicture(expression,size,basesp,arg1,arg2,arg3) \picture |
* rastline(expression,size,basesp,arg1,arg2,arg3) \line |
* rastline(expression,size,basesp,arg1,arg2,arg3) \line |
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* rastrule(expression,size,basesp,arg1,arg2,arg3) \rule |
* rastcircle(expression,size,basesp,arg1,arg2,arg3) \circle |
* rastcircle(expression,size,basesp,arg1,arg2,arg3) \circle |
* rastbezier(expression,size,basesp,arg1,arg2,arg3) \bezier |
* rastbezier(expression,size,basesp,arg1,arg2,arg3) \bezier |
* rastraise(expression,size,basesp,arg1,arg2,arg3) \raisebox |
* rastraise(expression,size,basesp,arg1,arg2,arg3) \raisebox |
* rastrotate(expression,size,basesp,arg1,arg2,arg3) \rotatebox |
* rastrotate(expression,size,basesp,arg1,arg2,arg3) \rotatebox |
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* rastreflect(expression,size,basesp,arg1,arg2,arg3)\reflectbox |
* rastfbox(expression,size,basesp,arg1,arg2,arg3) \fbox |
* rastfbox(expression,size,basesp,arg1,arg2,arg3) \fbox |
* rastinput(expression,size,basesp,arg1,arg2,arg3) \input |
* rastinput(expression,size,basesp,arg1,arg2,arg3) \input |
* rastcounter(expression,size,basesp,arg1,arg2,arg3) \counter |
* rastcounter(expression,size,basesp,arg1,arg2,arg3) \counter |
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* rasttoday(expression,size,basesp,arg1,arg2,arg3) \today |
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* rastcalendar(expression,size,basesp,arg1,arg2,arg3) \calendar |
* rastnoop(expression,size,basesp,arg1,arg2,arg3) flush \escape |
* rastnoop(expression,size,basesp,arg1,arg2,arg3) flush \escape |
* --- helper functions for handlers --- |
* --- helper functions for handlers --- |
* rastopenfile(filename,mode) opens filename[.tex] in mode |
* rastopenfile(filename,mode) opens filename[.tex] in mode |
* rastreadfile(filename,tag,value) read between <tag>...</tag> |
* rasteditfilename(filename) edit filename (for security) |
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* rastreadfile(filename,islock,tag,value) read <tag>...</tag> |
* rastwritefile(filename,tag,value,isstrict)write<tag>...</tag> |
* rastwritefile(filename,tag,value,isstrict)write<tag>...</tag> |
* timestamp( ) formats timestamp string (used by rastcounter) |
* calendar(year,month,day) formats one-month calendar string |
* dtoa(d,npts) double to comma-separated ascii |
* timestamp(tzdelta,ifmt) formats timestamp string |
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* tzadjust(tzdelta,year,month,day,hour) adjust date/time |
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* daynumber(year,month,day) #days since Monday, Jan 1, 1973 |
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* dbltoa(d,npts) double to comma-separated ascii |
* === Anti-alias completed raster (lowpass) or symbols (ss) === |
* === Anti-alias completed raster (lowpass) or symbols (ss) === |
* aalowpass(rp,bytemap,grayscale) lowpass grayscale bytemap |
* aalowpass(rp,bytemap,grayscale) lowpass grayscale bytemap |
* aapnm(rp,bytemap,grayscale) lowpass based on pnmalias.c |
* aapnm(rp,bytemap,grayscale) lowpass based on pnmalias.c |
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* aapnmlookup(rp,bytemap,grayscale) aapnm based on aagridnum() |
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* aapatterns(rp,irow,icol,gridnum,patternum,grayscale) call 19, |
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* aapattern1124(rp,irow,icol,gridnum,grayscale)antialias pattrn |
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* aapattern19(rp,irow,icol,gridnum,grayscale) antialias pattern |
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* aapattern20(rp,irow,icol,gridnum,grayscale) antialias pattern |
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* aapattern39(rp,irow,icol,gridnum,grayscale) antialias pattern |
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* aafollowline(rp,irow,icol,direction) looks for a "turn" |
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* aagridnum(rp,irow,icol) calculates gridnum, 0-511 |
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* aapatternnum(gridnum) looks up pattern#, 1-51, for gridnum |
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* aalookup(gridnum) table lookup for all possible 3x3 grids |
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* aalowpasslookup(rp,bytemap,grayscale) driver for aalookup() |
* aasupsamp(rp,aa,sf,grayscale) or by supersampling |
* aasupsamp(rp,aa,sf,grayscale) or by supersampling |
* aacolormap(bytemap,nbytes,colors,colormap)make colors,colormap |
* aacolormap(bytemap,nbytes,colors,colormap)make colors,colormap |
* aaweights(width,height) builds "canonical" weight matrix |
* aaweights(width,height) builds "canonical" weight matrix |
* aawtpixel(image,ipixel,weights,rotate) weight image at ipixel |
* aawtpixel(image,ipixel,weights,rotate) weight image at ipixel |
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* === miscellaneous === |
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* mimetexsetmsg(newmsglevel,newmsgfp) set msglevel and msgfp |
* PART1 ========================== Driver =========================== |
* PART1 ========================== Driver =========================== |
* main(argc,argv) parses math expression and emits mime xbitmap |
* main(argc,argv) parses math expression and emits mime xbitmap |
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* CreateGifFromEq(expression,gifFileName) entry pt for win dll |
* isstrstr(string,snippets,iscase) are any snippets in string? |
* isstrstr(string,snippets,iscase) are any snippets in string? |
* ismonth(month) is month current month ("jan"-"dec")? |
* ismonth(month) is month current month ("jan"-"dec")? |
* unescape_url(url,isescape), x2c(what) xlate %xx url-encoded |
* unescape_url(url,isescape), x2c(what) xlate %xx url-encoded |
* logger(fp,msglevel,logvars) logs environment variables |
* logger(fp,msglevel,logvars) logs environment variables |
* emitcache(cachefile) read cachefile and emit bytes to stdout |
* emitcache(cachefile,maxage,isbuffer) emit cachefile to stdout |
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* readcachefile(cachefile,buffer) read cachefile into buffer |
* md5str(instr) md5 hash library functions |
* md5str(instr) md5 hash library functions |
* GetPixel(x,y) callback function for gifsave library |
* GetPixel(x,y) callback function for gifsave library |
* |
* |
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* background color index, is included with mimeTeX, |
* background color index, is included with mimeTeX, |
* and it's documented in mimetex.html#gifsave . |
* and it's documented in mimetex.html#gifsave . |
* o Optional compile-line -D defined symbols are documented |
* o Optional compile-line -D defined symbols are documented |
* in mimetex.html#options . They include... |
* in mimetex.html#options . They include (additional -D |
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* switches are discussed in mimetex.html#options)... |
* -DAA |
* -DAA |
* Turns on gif anti-aliasing with default values |
* Turns on gif anti-aliasing with default values |
* (CENTERWT=32, ADJACENTWT=3, CORNERWT=1) |
* (CENTERWT=32, ADJACENTWT=3, CORNERWT=1) |
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* algorithm for anti-aliasing, which is applied to the |
* algorithm for anti-aliasing, which is applied to the |
* existing set of bitmap fonts. This lowpass filter |
* existing set of bitmap fonts. This lowpass filter |
* applies default weights |
* applies default weights |
* 1 3 1 |
* 1 2 1 |
* 3 32 3 |
* 2 8 2 |
* 1 3 1 |
* 1 2 1 |
* to neighboring pixels. The defaults weights are |
* to neighboring pixels. The defaults weights are |
* CENTERWT=32, ADJACENTWT=3 and CORNERWT=1, |
* CENTERWT=8, ADJACENTWT=2 and CORNERWT=1, |
* which you can adjust to control anti-aliasing. |
* which you can adjust to control anti-aliasing. |
* Lower CENTERWT values will blur/spread out lines |
* Lower CENTERWT values will blur/spread out lines |
* while higher values will tend to sharpen lines. |
* while higher values will tend to sharpen lines. |
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* 02/01/04 J.Forkosh Version 1.40 released. |
* 02/01/04 J.Forkosh Version 1.40 released. |
* 10/02/04 J.Forkosh Version 1.50 released. |
* 10/02/04 J.Forkosh Version 1.50 released. |
* 11/30/04 J.Forkosh Version 1.60 released. |
* 11/30/04 J.Forkosh Version 1.60 released. |
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* 10/11/05 J.Forkosh Version 1.64 released. |
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* 11/30/06 J.Forkosh most recent changes |
* |
* |
****************************************************************************/ |
****************************************************************************/ |
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Line 311 header files and macros
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Line 350 header files and macros
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/* --- windows-specific header info --- */ |
/* --- windows-specific header info --- */ |
#ifndef WINDOWS /* -DWINDOWS not supplied by user */ |
#ifndef WINDOWS /* -DWINDOWS not supplied by user */ |
#if defined(_WIN32) || defined(WIN32) \ |
#if defined(_WINDOWS) || defined(_WIN32) || defined(WIN32) \ |
|| defined(DJGPP) /* try to recognize windows */ |
|| defined(DJGPP) /* try to recognize windows compilers */ \ |
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|| defined(_USRDLL) /* must be WINDOWS if compiling for DLL */ |
#define WINDOWS /* signal windows */ |
#define WINDOWS /* signal windows */ |
#endif |
#endif |
#endif |
#endif |
Line 328 header files and macros
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Line 368 header files and macros
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#if defined(_O_BINARY) || defined(O_BINARY) /* setmode() now available */ |
#if defined(_O_BINARY) || defined(O_BINARY) /* setmode() now available */ |
#define HAVE_SETMODE /* so we'll use setmode() */ |
#define HAVE_SETMODE /* so we'll use setmode() */ |
#endif |
#endif |
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#if defined(_MSC_VER) && defined(_DEBUG) /* MS VC++ in debug mode */ |
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/* to show source file and line numbers where memory leaks occur... */ |
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#define _CRTDBG_MAP_ALLOC /* ...include this debug macro */ |
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#include <crtdbg.h> /* and this debug library */ |
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#endif |
#define ISWINDOWS 1 |
#define ISWINDOWS 1 |
#else |
#else |
#define ISWINDOWS 0 |
#define ISWINDOWS 0 |
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Line 393 header files and macros
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#else |
#else |
#define ISSUPERSAMPLING 0 |
#define ISSUPERSAMPLING 0 |
#ifndef AAALGORITHM |
#ifndef AAALGORITHM |
#define AAALGORITHM 2 /* default lowpass algorithm */ |
#define AAALGORITHM 3 /*2*/ /* default lowpass algorithm */ |
#endif |
#endif |
#endif |
#endif |
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#ifndef MAXFOLLOW |
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#define MAXFOLLOW 8 /* aafollowline() maxturn default */ |
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#endif |
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/* --- set aa (and default gif) if any anti-aliasing options specified --- */ |
/* --- set aa (and default gif) if any anti-aliasing options specified --- */ |
#if defined(AA) || defined(GIF) || defined(PNG) \ |
#if defined(AA) || defined(GIF) || defined(PNG) \ |
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Line 436 header files and macros
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#define NOREFMAXLEN 9999 /* default to any length query */ |
#define NOREFMAXLEN 9999 /* default to any length query */ |
#endif |
#endif |
#else |
#else |
#define NOTEXFONTS /* texfonts not required */ |
#ifndef TEXFONTS |
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#define NOTEXFONTS /* texfonts not required */ |
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#endif |
#endif |
#endif |
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/* --- application headers --- */ |
/* --- application headers --- */ |
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Line 446 header files and macros
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#define TEXFONTS /* to include texfonts.h */ |
#define TEXFONTS /* to include texfonts.h */ |
#endif |
#endif |
#include "mimetex.h" |
#include "mimetex.h" |
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/* --- info needed when gif image returned in memory buffer --- */ |
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#ifdef GIF /* compiling along with gifsave.c */ |
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extern int gifSize; |
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extern int maxgifSize; |
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#else /* or just set dummy values */ |
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static int gifSize=0, maxgifSize=0; |
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#endif |
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/* --- gamma correction --- */ |
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#ifndef GAMMA |
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#define GAMMA 1.25 /*1.75*/ /*2.2*/ |
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#endif |
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#ifndef REVERSEGAMMA |
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#define REVERSEGAMMA 0.5 /* for \reverse white-on-black */ |
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#endif |
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/* --- opaque background (default to transparent) --- */ |
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#ifndef OPAQUE |
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#define ISTRANSPARENT 1 |
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#else |
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#define ISTRANSPARENT 0 |
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#endif |
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/* --- internal buffer sizes --- */ |
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#if !defined(MAXEXPRSZ) |
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#define MAXEXPRSZ (32768-1) /*max #bytes in input tex expression*/ |
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#endif |
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#if !defined(MAXSUBXSZ) |
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#define MAXSUBXSZ (((MAXEXPRSZ+1)/2)-1)/*max #bytes in input subexpression*/ |
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#endif |
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#if !defined(MAXTOKNSZ) |
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#define MAXTOKNSZ (((MAXSUBXSZ+1)/4)-1) /* max #bytes in input token */ |
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#endif |
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#if !defined(MAXFILESZ) |
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#define MAXFILESZ (65536-1) /*max #bytes in input (output) file*/ |
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#endif |
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#if !defined(MAXLINESZ) |
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#define MAXLINESZ (4096-1) /* max #chars in line from file */ |
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#endif |
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#if !defined(MAXGIFSZ) |
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#define MAXGIFSZ 131072 /* max #bytes in output GIF image */ |
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#endif |
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/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
adjustable default values |
adjustable default values |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- anti-aliasing parameters --- */ |
/* --- anti-aliasing parameters --- */ |
#ifndef CENTERWT |
#ifndef CENTERWT |
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/*#define CENTERWT 32*/ /* anti-aliasing centerwt default */ |
/*#define CENTERWT 10*/ /* anti-aliasing centerwt default */ |
/*#define CENTERWT 10*/ /* anti-aliasing centerwt default */ |
/*#define CENTERWT 6*/ /* anti-aliasing centerwt default */ |
#define CENTERWT 8 /* anti-aliasing centerwt default */ |
#define CENTERWT 32 /* anti-aliasing centerwt default */ |
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#endif |
#endif |
#ifndef ADJACENTWT |
#ifndef ADJACENTWT |
/*#define ADJACENTWT 3*/ /* anti-aliasing adjacentwt default*/ |
/*#define ADJACENTWT 3*/ /* anti-aliasing adjacentwt default*/ |
/*#define ADJACENTWT 2*/ /* anti-aliasing adjacentwt default*/ |
#define ADJACENTWT 2 /* anti-aliasing adjacentwt default*/ |
#define ADJACENTWT 3 /* anti-aliasing adjacentwt default*/ |
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#endif |
#endif |
#ifndef CORNERWT |
#ifndef CORNERWT |
#define CORNERWT 1 /* anti-aliasing cornerwt default*/ |
#define CORNERWT 1 /* anti-aliasing cornerwt default*/ |
Line 428 GLOBAL(int,minadjacent,MINADJACENT); /*
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Line 516 GLOBAL(int,minadjacent,MINADJACENT); /*
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GLOBAL(int,maxadjacent,MAXADJACENT); /* darken if<=adjacent pts black */ |
GLOBAL(int,maxadjacent,MAXADJACENT); /* darken if<=adjacent pts black */ |
GLOBAL(int,weightnum,1); /* font wt, */ |
GLOBAL(int,weightnum,1); /* font wt, */ |
GLOBAL(int,maxaaparams,4); /* #entries in table */ |
GLOBAL(int,maxaaparams,4); /* #entries in table */ |
/* --- parameter values by font weight --- */ |
/* --- anti-aliasing parameter values by font weight --- */ |
#define aaparameters struct aaparameters_struct /* typedef */ |
#define aaparameters struct aaparameters_struct /* typedef */ |
aaparameters |
aaparameters |
{ int centerwt; /* lowpass matrix center pixel wt*/ |
{ int centerwt; /* lowpass matrix center pixel wt*/ |
Line 450 STATIC aaparameters aaparams[] /* set p
|
Line 538 STATIC aaparameters aaparams[] /* set p
|
} /* --- end-of-aaparams[] --- */ |
} /* --- end-of-aaparams[] --- */ |
#endif |
#endif |
; |
; |
|
/* --- anti-aliasing diagnostics (to help improve algorithm) --- */ |
|
STATIC int patternnumcount0[99], patternnumcount1[99], /*aalookup() counts*/ |
|
ispatternnumcount = 1; /* true to accumulate counts */ |
|
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
other variables |
other variables |
Line 473 other variables
|
Line 564 other variables
|
#ifndef FGBLUE |
#ifndef FGBLUE |
#define FGBLUE (ISBLACKONWHITE?0:255) |
#define FGBLUE (ISBLACKONWHITE?0:255) |
#endif |
#endif |
/* --- "squash" margin (0 means no squashing) --- */ |
/* --- "smash" margin (0 means no smashing) --- */ |
#ifndef SQUASHMARGIN |
#ifndef SMASHMARGIN |
#ifdef NOSQUASH |
#ifdef NOSMASH |
#define SQUASHMARGIN 0 |
#define SMASHMARGIN 0 |
#else |
#else |
#define SQUASHMARGIN 3 |
#define SMASHMARGIN 3 |
#endif |
#endif |
#endif |
#endif |
|
#ifndef SMASHCHECK |
|
#define SMASHCHECK 0 |
|
#endif |
/* --- textwidth --- */ |
/* --- textwidth --- */ |
#ifndef TEXTWIDTH |
#ifndef TEXTWIDTH |
#define TEXTWIDTH (400) |
#define TEXTWIDTH (400) |
#endif |
#endif |
/* --- font "combinations" --- */ |
/* --- font "combinations" --- */ |
#define CMSYEX (107) /* select CMSY10 _or_ CMEX10 */ |
#define CMSYEX (109) /*select CMSY10, CMEX10 or STMARY10*/ |
/* --- prefix prepended to all expressions --- */ |
/* --- prefix prepended to all expressions --- */ |
#ifndef PREFIX |
#ifndef PREFIX |
#define PREFIX "\000" /* default no prepended prefix */ |
#define PREFIX "\000" /* default no prepended prefix */ |
Line 522 other variables
|
Line 616 other variables
|
#ifndef PATHPREFIX |
#ifndef PATHPREFIX |
#define PATHPREFIX "\000" /* paths relative mimetex.cgi */ |
#define PATHPREFIX "\000" /* paths relative mimetex.cgi */ |
#endif |
#endif |
|
/* --- time zone delta t (in hours) --- */ |
|
#ifndef TZDELTA |
|
#define TZDELTA 0 |
|
#endif |
|
/* --- treat +'s in query string as blanks? --- */ |
|
#ifdef PLUSBLANK /* + always interpreted as blank */ |
|
#define ISPLUSBLANK 1 |
|
#else |
|
#ifdef PLUSNOTBLANK /* + never interpreted as blank */ |
|
#define ISPLUSBLANK 0 |
|
#else /* program tries to determine */ |
|
#define ISPLUSBLANK (-1) |
|
#endif |
|
#endif |
|
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
debugging and logging / error reporting |
debugging and logging / error reporting |
Line 555 control flags and values
|
Line 663 control flags and values
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
GLOBAL(int,recurlevel,0); /* inc/decremented in rasterize() */ |
GLOBAL(int,recurlevel,0); /* inc/decremented in rasterize() */ |
GLOBAL(int,scriptlevel,0); /* inc/decremented in rastlimits() */ |
GLOBAL(int,scriptlevel,0); /* inc/decremented in rastlimits() */ |
GLOBAL(int,istext,0); /* textmode if true,italics=2,bb=3 */ |
GLOBAL(int,isstring,0); /*pixmap is ascii string, not raster*/ |
GLOBAL(int,isstring ,0); /*pixmap is ascii string, not raster*/ |
GLOBAL(int,isligature,0); /* true if ligature found */ |
|
GLOBAL(char,*subexprptr,(char *)NULL); /* ptr within expression to subexpr*/ |
|
/*SHARED(int,imageformat,1);*/ /* image is 1=bitmap, 2=.gf-like */ |
GLOBAL(int,isdisplaystyle,1); /* displaystyle mode (forced if 2) */ |
GLOBAL(int,isdisplaystyle,1); /* displaystyle mode (forced if 2) */ |
GLOBAL(int,ispreambledollars,0); /* displaystyle mode set by $$...$$ */ |
GLOBAL(int,ispreambledollars,0); /* displaystyle mode set by $$...$$ */ |
|
GLOBAL(int,isemitcontenttype,1); /* true to emit mime content-type */ |
|
GLOBAL(int,fontnum,0); /* cal=1,scr=2,rm=3,it=4,bb=5,bf=6 */ |
GLOBAL(int,fontsize,NORMALSIZE); /* current size */ |
GLOBAL(int,fontsize,NORMALSIZE); /* current size */ |
GLOBAL(int,displaysize,DISPLAYSIZE); /* use \displaystyle when fontsize>=*/ |
GLOBAL(int,displaysize,DISPLAYSIZE); /* use \displaystyle when fontsize>=*/ |
GLOBAL(int,shrinkfactor,3); /* shrinkfactors[fontsize] */ |
GLOBAL(int,shrinkfactor,3); /* shrinkfactors[fontsize] */ |
GLOBAL(double,unitlength,1.0); /* #pixels per unit (may be <1.0) */ |
GLOBAL(double,unitlength,1.0); /* #pixels per unit (may be <1.0) */ |
/*GLOBAL(int,textwidth,TEXTWIDTH);*/ /* #pixels across line */ |
/*GLOBAL(int,textwidth,TEXTWIDTH);*/ /* #pixels across line */ |
GLOBAL(int,squashmargin,SQUASHMARGIN); /* minimum "squash" margin */ |
GLOBAL(int,isnocatspace,0); /* >0 to not add space in rastcat()*/ |
GLOBAL(int,issquashdelta,1); /* true if squashmargin is a delta */ |
GLOBAL(int,smashmargin,SMASHMARGIN); /* minimum "smash" margin */ |
GLOBAL(int,istransparent,1); /*true to set background transparent*/ |
GLOBAL(int,mathsmashmargin,SMASHMARGIN); /* needed for \text{if $n-m$ even}*/ |
|
GLOBAL(int,issmashdelta,1); /* true if smashmargin is a delta */ |
|
GLOBAL(int,isexplicitsmash,0); /* true if \smash explicitly given */ |
|
GLOBAL(int,smashcheck,SMASHCHECK); /* check if terms safe to smash */ |
|
GLOBAL(int,isscripted,0); /* is (lefthand) term text-scripted*/ |
|
GLOBAL(int,isdelimscript,0); /* is \right delim text-scripted */ |
|
GLOBAL(int,issmashokay,0); /*is leading char okay for smashing*/ |
|
#define BLANKSIGNAL (-991234) /*rastsmash signal right-hand blank*/ |
|
GLOBAL(int,blanksignal,BLANKSIGNAL); /*rastsmash signal right-hand blank*/ |
|
GLOBAL(int,blanksymspace,0); /* extra (or too much) space wanted*/ |
|
GLOBAL(int,istransparent,ISTRANSPARENT);/* true sets background transparent*/ |
GLOBAL(int,fgred,FGRED); |
GLOBAL(int,fgred,FGRED); |
GLOBAL(int,fggreen,FGGREEN); |
GLOBAL(int,fggreen,FGGREEN); |
GLOBAL(int,fgblue,FGBLUE); /* fg r,g,b */ |
GLOBAL(int,fgblue,FGBLUE); /* fg r,g,b */ |
GLOBAL(int,bgred,BGRED); |
GLOBAL(int,bgred,BGRED); |
GLOBAL(int,bggreen,BGGREEN); |
GLOBAL(int,bggreen,BGGREEN); |
GLOBAL(int,bgblue,BGBLUE); /* bg r,g,b */ |
GLOBAL(int,bgblue,BGBLUE); /* bg r,g,b */ |
|
GLOBAL(double,gammacorrection,GAMMA); /* gamma correction */ |
|
GLOBAL(int,isplusblank,ISPLUSBLANK); /*interpret +'s in query as blanks?*/ |
GLOBAL(int,isblackonwhite,ISBLACKONWHITE); /*1=black on white,0=reverse*/ |
GLOBAL(int,isblackonwhite,ISBLACKONWHITE); /*1=black on white,0=reverse*/ |
GLOBAL(char,exprprefix[256],PREFIX); /* prefix prepended to expressions */ |
GLOBAL(char,exprprefix[256],PREFIX); /* prefix prepended to expressions */ |
GLOBAL(int,aaalgorithm,AAALGORITHM); /* for lp, 1=aalowpass, 2 =aapnm */ |
GLOBAL(int,aaalgorithm,AAALGORITHM); /* for lp, 1=aalowpass, 2 =aapnm */ |
|
GLOBAL(int,maxfollow,MAXFOLLOW); /* aafollowline() maxturn parameter*/ |
GLOBAL(int,fgalias,1); |
GLOBAL(int,fgalias,1); |
GLOBAL(int,fgonly,0); |
GLOBAL(int,fgonly,0); |
GLOBAL(int,bgalias,0); |
GLOBAL(int,bgalias,0); |
Line 587 GLOBAL(subraster,*workingbox,(subraster
|
Line 712 GLOBAL(subraster,*workingbox,(subraster
|
GLOBAL(int,isreplaceleft,0); /* true to replace leftexpression */ |
GLOBAL(int,isreplaceleft,0); /* true to replace leftexpression */ |
GLOBAL(subraster,*leftexpression,(subraster *)NULL); /*rasterized so far*/ |
GLOBAL(subraster,*leftexpression,(subraster *)NULL); /*rasterized so far*/ |
GLOBAL(mathchardef,*leftsymdef,NULL); /* mathchardef for preceding symbol*/ |
GLOBAL(mathchardef,*leftsymdef,NULL); /* mathchardef for preceding symbol*/ |
|
GLOBAL(int,fraccenterline,NOVALUE); /* baseline for punct. after \frac */ |
|
/*GLOBAL(int,currentcharclass,NOVALUE);*/ /*primarily to check for PUNCTION*/ |
GLOBAL(int,iscaching,ISCACHING); /* true if caching images */ |
GLOBAL(int,iscaching,ISCACHING); /* true if caching images */ |
GLOBAL(char,cachepath[256],CACHEPATH); /* relative path to cached files */ |
GLOBAL(char,cachepath[256],CACHEPATH); /* relative path to cached files */ |
GLOBAL(char,pathprefix[256],PATHPREFIX); /*prefix for \input,\counter paths*/ |
GLOBAL(char,pathprefix[256],PATHPREFIX); /*prefix for \input,\counter paths*/ |
Line 606 miscellaneous macros
|
Line 733 miscellaneous macros
|
{ char *p; while((p=strchr((s),(c)))!=NULL) strcpy(p,p+1); } else |
{ char *p; while((p=strchr((s),(c)))!=NULL) strcpy(p,p+1); } else |
#define slower(s) if ((s)!=NULL) /* lowercase all chars in s */ \ |
#define slower(s) if ((s)!=NULL) /* lowercase all chars in s */ \ |
{ char *p=(s); while(*p!='\000'){*p=tolower(*p); p++;} } else |
{ char *p=(s); while(*p!='\000'){*p=tolower(*p); p++;} } else |
|
/*subraster *subrastcpy();*/ /* need global module declaration */ |
|
/*#define spnosmash(sp) if (sp->type==CHARASTER) sp=subrastcpy(sp); \*/ |
|
/* sp->type=blanksignal*/ |
|
|
/* --- |
/* --- |
* PART2 |
* PART2 |
Line 655 if ( rp == (raster *)NULL ) /* malloc f
|
Line 785 if ( rp == (raster *)NULL ) /* malloc f
|
goto end_of_job; /* return error to caller */ |
goto end_of_job; /* return error to caller */ |
rp->width = width; /* store width in raster struct */ |
rp->width = width; /* store width in raster struct */ |
rp->height = height; /* and store height */ |
rp->height = height; /* and store height */ |
|
rp->format = 1; /* initialize as bitmap format */ |
rp->pixsz = pixsz; /* store #bits per pixel */ |
rp->pixsz = pixsz; /* store #bits per pixel */ |
rp->pixmap = (pixbyte *)NULL; /* init bitmap as null ptr */ |
rp->pixmap = (pixbyte *)NULL; /* init bitmap as null ptr */ |
/* --- allocate and initialize bitmap array --- */ |
/* --- allocate and initialize bitmap array --- */ |
Line 775 cp->charnum = cp->location = 0; /* init
|
Line 906 cp->charnum = cp->location = 0; /* init
|
cp->toprow = cp->topleftcol = 0; /* init upper-left corner */ |
cp->toprow = cp->topleftcol = 0; /* init upper-left corner */ |
cp->botrow = cp->botleftcol = 0; /* init lower-left corner */ |
cp->botrow = cp->botleftcol = 0; /* init lower-left corner */ |
cp->image.width = cp->image.height = 0; /* init raster dimensions */ |
cp->image.width = cp->image.height = 0; /* init raster dimensions */ |
|
cp->image.format = 0; /* init raster format */ |
cp->image.pixsz = 0; /* and #bits per pixel */ |
cp->image.pixsz = 0; /* and #bits per pixel */ |
cp->image.pixmap = NULL; /* init raster pixmap as null */ |
cp->image.pixmap = NULL; /* init raster pixmap as null */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 947 newsp->image = newrp; /* new raster im
|
Line 1079 newsp->image = newrp; /* new raster im
|
switch ( sp->type ) /* set new raster image type */ |
switch ( sp->type ) /* set new raster image type */ |
{ case STRINGRASTER: case CHARASTER: newsp->type = STRINGRASTER; break; |
{ case STRINGRASTER: case CHARASTER: newsp->type = STRINGRASTER; break; |
case ASCIISTRING: newsp->type = ASCIISTRING; break; |
case ASCIISTRING: newsp->type = ASCIISTRING; break; |
|
case FRACRASTER: newsp->type = FRACRASTER; break; |
|
case BLANKSIGNAL: newsp->type = blanksignal; break; |
case IMAGERASTER: default: newsp->type = IMAGERASTER; break; } |
case IMAGERASTER: default: newsp->type = IMAGERASTER; break; } |
/* --- return copy of sp to caller --- */ |
/* --- return copy of sp to caller --- */ |
end_of_job: |
end_of_job: |
Line 960 end_of_job:
|
Line 1094 end_of_job:
|
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Arguments: rp (I) ptr to raster struct to be rotated |
* Arguments: rp (I) ptr to raster struct to be rotated |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Returns: ( raster * ) ptr to new raster rotated ralative to rp, |
* Returns: ( raster * ) ptr to new raster rotated relative to rp, |
* or NULL for any error. |
* or NULL for any error. |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Notes: o An underbrace is } rotated 90 degrees clockwise, |
* Notes: o An underbrace is } rotated 90 degrees clockwise, |
Line 993 return ( rotated ); /* return rotated
|
Line 1127 return ( rotated ); /* return rotated
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: rastref ( rp, axis ) |
|
* Purpose: reflects rp, horizontally about y-axis |_ becomes _| if axis=1 |
|
* or vertically about x-axis M becomes W if axis=2. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) ptr to raster struct to be reflected |
|
* axis (I) int containing 1 for horizontal reflection, |
|
* or 2 for vertical |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( raster * ) ptr to new raster reflected relative to rp, |
|
* or NULL for any error. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
raster *rastref ( raster *rp, int axis ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
raster *new_raster(), *reflected=NULL; /* reflected raster back to caller */ |
|
int height = rp->height, irow, /* height, row index */ |
|
width = rp->width, icol, /* width, column index */ |
|
pixsz = rp->pixsz; /* #bits per pixel */ |
|
/* ------------------------------------------------------------------------- |
|
allocate reflected raster and fill it |
|
-------------------------------------------------------------------------- */ |
|
/* --- allocate reflected raster with same width, height --- */ |
|
if ( axis==1 || axis==2 ) /* first validate axis arg */ |
|
if ( (reflected = new_raster(width,height,pixsz)) /* same width, height */ |
|
!= NULL ) /* check that allocation succeeded */ |
|
/* --- fill reflected raster --- */ |
|
for ( irow=0; irow<height; irow++ ) /* for each row of rp */ |
|
for ( icol=0; icol<width; icol++ ) { /* and each column of rp */ |
|
int value = getpixel(rp,irow,icol); |
|
if ( axis == 1 ) { setpixel(reflected,irow,width-1-icol,value); } |
|
if ( axis == 2 ) { setpixel(reflected,height-1-irow,icol,value); } } |
|
return ( reflected ); /*return reflected raster to caller*/ |
|
} /* --- end-of-function rastref() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: rastput ( target, source, top, left, isopaque ) |
* Function: rastput ( target, source, top, left, isopaque ) |
* Purpose: Overlays source onto target, |
* Purpose: Overlays source onto target, |
* with the 0,0-bit of source onto the top,left-bit of target. |
* with the 0,0-bit of source onto the top,left-bit of target. |
Line 1046 else
|
Line 1221 else
|
if ( isfatal ) goto end_of_job; /* abort if error is fatal */ |
if ( isfatal ) goto end_of_job; /* abort if error is fatal */ |
else break; } /*or just go on to next row*/ |
else break; } /*or just go on to next row*/ |
if ( tpix >= 0 ) /* bounds check okay */ |
if ( tpix >= 0 ) /* bounds check okay */ |
if ( svalue!=0 || isopaque ) /*got dark or opaque source*/ |
if ( svalue!=0 || isopaque ) { /*got dark or opaque source*/ |
setpixel(target,irow+top,icol+left,svalue); /*overlay source on target*/ |
setpixel(target,irow+top,icol+left,svalue); }/*overlay source on targ*/ |
} /* --- end-of-for(icol) --- */ |
} /* --- end-of-for(icol) --- */ |
} /* --- end-of-for(irow) --- */ |
} /* --- end-of-for(irow) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 1190 int base1 = sp1->baseline, /*baseline
|
Line 1365 int base1 = sp1->baseline, /*baseline
|
pixsz2 = (sp2->image)->pixsz, /* pixsz for right-hand subraster */ |
pixsz2 = (sp2->image)->pixsz, /* pixsz for right-hand subraster */ |
type2 = sp2->type; /* image type for right-hand */ |
type2 = sp2->type; /* image type for right-hand */ |
int height=0, width=0, pixsz=0, base=0; /*concatted sp1||sp2 composite*/ |
int height=0, width=0, pixsz=0, base=0; /*concatted sp1||sp2 composite*/ |
int issquash = (squashmargin!=0?1:0), /* true to "squash" sp1||sp2 */ |
int issmash = (smashmargin!=0?1:0), /* true to "squash" sp1||sp2 */ |
isopaque = (issquash?0:1), /* not oppaque if squashing */ |
isopaque = (issmash?0:1), /* not oppaque if smashing */ |
rastsquash(), isblank=0, nsquash=0, /* #cols to squash */ |
rastsmash(), isblank=0, nsmash=0, /* #cols to smash */ |
oldsquashmargin = squashmargin; /* save original squashmargin */ |
oldsmashmargin = smashmargin, /* save original smashmargin */ |
int blanksignal = (-991234); /*rastsquash signal right-hand blank*/ |
oldblanksymspace = blanksymspace, /* save original blanksymspace */ |
|
oldnocatspace = isnocatspace; /* save original isnocatspace */ |
mathchardef *symdef1 = sp1->symdef, /*mathchardef of last left-hand char*/ |
mathchardef *symdef1 = sp1->symdef, /*mathchardef of last left-hand char*/ |
*symdef2 = sp2->symdef; /* mathchardef of right-hand char */ |
*symdef2 = sp2->symdef; /* mathchardef of right-hand char */ |
int class1 = (symdef1==NULL?ORDINARY:symdef1->class), /* symdef->class */ |
int class1 = (symdef1==NULL?ORDINARY:symdef1->class), /* symdef->class */ |
Line 1204 int class1 = (symdef1==NULL?ORDINARY:sym
|
Line 1380 int class1 = (symdef1==NULL?ORDINARY:sym
|
smash2 = (symdef2!=NULL)&&(class2==ORDINARY||class2==VARIABLE|| |
smash2 = (symdef2!=NULL)&&(class2==ORDINARY||class2==VARIABLE|| |
class2==OPENING||class2==CLOSING||class2==PUNCTION), |
class2==OPENING||class2==CLOSING||class2==PUNCTION), |
space = fontsize/2+1; /* #cols between sp1 and sp2 */ |
space = fontsize/2+1; /* #cols between sp1 and sp2 */ |
|
int isfrac = (type1 == FRACRASTER /* sp1 is a \frac */ |
|
&& class2 == PUNCTION); /* and sp2 is punctuation */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Initialization |
Initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 1211 Initialization
|
Line 1389 Initialization
|
if ( !isstring ) |
if ( !isstring ) |
space = max2(2,(symspace[class1][class2] + fontsize-3)); /* space */ |
space = max2(2,(symspace[class1][class2] + fontsize-3)); /* space */ |
else space = 1; /* space for ascii string */ |
else space = 1; /* space for ascii string */ |
/* --- determine squash --- */ |
if ( isnocatspace > 0 ) { /* spacing explicitly turned off */ |
if ( !isstring ) /* don't squash strings */ |
space = 0; /* reset space */ |
if ( issquash ) { /* raster squash wanted */ |
isnocatspace--; } /* and decrement isnocatspace flag */ |
int maxsquash = rastsquash(sp1,sp2), /* calculate max squash space */ |
if ( 0 && sp1->type == BLANKSIGNAL ) space=0; /*implicitly turn off spacing*/ |
margin = squashmargin; /* init margin without delta */ |
if ( sp1->type==BLANKSIGNAL && sp2->type==BLANKSIGNAL ) /* both blank */ |
|
space = 0; /* no extra space between spaces */ |
|
if ( sp2->type != BLANKSIGNAL ) /* not a blank space signal */ |
|
if ( blanksymspace != 0 ) { /* and we have a space adjustment */ |
|
space = max2(0,space+blanksymspace); /* adjust as much as possible */ |
|
blanksymspace = 0; } /* and reset adjustment */ |
|
if ( msgfp!=NULL && msglevel>=999 ) /* display space results */ |
|
{ fprintf(msgfp,"rastcat> space=%d, blanksymspace=%d, isnocatspace=%d\n", |
|
space,oldblanksymspace,oldnocatspace); fflush(msgfp); } |
|
/* --- determine smash --- */ |
|
if ( !isstring && !isfrac ) /* don't smash strings or \frac's */ |
|
if ( issmash ) { /* raster smash wanted */ |
|
int maxsmash = rastsmash(sp1,sp2), /* calculate max smash space */ |
|
margin = smashmargin; /* init margin without delta */ |
if ( (1 && smash1 && smash2) /* concatanating two chars */ |
if ( (1 && smash1 && smash2) /* concatanating two chars */ |
|| (1 && type1!=IMAGERASTER && type2!=IMAGERASTER) ) |
|| (1 && type1!=IMAGERASTER && type2!=IMAGERASTER |
/*maxsquash = 0;*/ /* turn off squash */ |
&& type1!=FRACRASTER && type2!=FRACRASTER ) ) |
margin = max2(space-1,0); /* force small squashmargin */ |
/*maxsmash = 0;*/ /* turn off smash */ |
|
margin = max2(space-1,0); /* force small smashmargin */ |
else /* adjust for delta if images */ |
else /* adjust for delta if images */ |
if ( issquashdelta ) /* squashmargin is a delta value */ |
if ( issmashdelta ) /* smashmargin is a delta value */ |
margin += fontsize; /* add displaystyle base to margin */ |
margin += fontsize; /* add displaystyle base to margin */ |
if ( maxsquash == blanksignal ) /* sp2 is intentional blank */ |
if ( maxsmash == blanksignal ) /* sp2 is intentional blank */ |
isblank = 1; /* set blank flag signal */ |
isblank = 1; /* set blank flag signal */ |
else /* see how much extra space we have*/ |
else /* see how much extra space we have*/ |
if ( maxsquash > margin ) /* enough space for adjustment */ |
if ( maxsmash > margin ) /* enough space for adjustment */ |
nsquash = maxsquash-margin; /* make adjustment */ |
nsmash = maxsmash-margin; /* make adjustment */ |
if ( msgfp!=NULL && msglevel>=99 ) /* display squash results */ |
if ( msgfp!=NULL && msglevel>=99 ) /* display smash results */ |
{ fprintf(msgfp,"rastcat> maxsquash=%d, margin=%d, nsquash=%d\n", |
{ fprintf(msgfp,"rastcat> maxsmash=%d, margin=%d, nsmash=%d\n", |
maxsquash,margin,nsquash); |
maxsmash,margin,nsmash); |
fprintf(msgfp,"rastcat> type1=%d,2=%d, class1=%d,2=%d\n", type1,type2, |
fprintf(msgfp,"rastcat> type1=%d,2=%d, class1=%d,2=%d\n", type1,type2, |
(symdef1==NULL?-999:class1),(symdef2==NULL?-999:class2)); |
(symdef1==NULL?-999:class1),(symdef2==NULL?-999:class2)); |
fflush(msgfp); } |
fflush(msgfp); } |
} /* --- end-of-if(issquash) --- */ |
} /* --- end-of-if(issmash) --- */ |
/* --- determine height, width and baseline of composite raster --- */ |
/* --- determine height, width and baseline of composite raster --- */ |
if ( !isstring ) |
if ( !isstring ) |
{ height = max2(base1+1,base2+1) /* max height above baseline */ |
{ height = max2(base1+1,base2+1) /* max height above baseline */ |
+ max2(height1-base1-1,height2-base2-1); /*+ max descending below*/ |
+ max2(height1-base1-1,height2-base2-1); /*+ max descending below*/ |
width = width1+width2 + space-nsquash; /*add widths and space-squash*/ |
width = width1+width2 + space-nsmash; /*add widths and space-smash*/ |
width = max3(width,width1,width2); } /* don't "over-squash" composite */ |
width = max3(width,width1,width2); } /* don't "over-smash" composite */ |
else /* ascii string */ |
else /* ascii string */ |
{ height = 1; /* default */ |
{ height = 1; /* default */ |
width = width1 + width2 + space - 1; } /* no need for two nulls */ |
width = width1 + width2 + space - 1; } /* no need for two nulls */ |
Line 1254 if ( msgfp!=NULL && msglevel>=9999 ) /*
|
Line 1446 if ( msgfp!=NULL && msglevel>=9999 ) /*
|
height2,width2,pixsz2,base2); |
height2,width2,pixsz2,base2); |
type_raster(sp2->image,msgfp); /* display right-hand raster */ |
type_raster(sp2->image,msgfp); /* display right-hand raster */ |
fprintf(msgfp, |
fprintf(msgfp, |
"rastcat> Composite ht,width,squash,pixsz,base = %d,%d,%d,%d,%d\n", |
"rastcat> Composite ht,width,smash,pixsz,base = %d,%d,%d,%d,%d\n", |
height,width,nsquash,pixsz,base); |
height,width,nsmash,pixsz,base); |
fflush(msgfp); } /* flush msgfp buffer */ |
fflush(msgfp); } /* flush msgfp buffer */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
allocate concatted composite subraster |
allocate concatted composite subraster |
Line 1273 if ( (sp=new_subraster(width,height,pixs
|
Line 1465 if ( (sp=new_subraster(width,height,pixs
|
/* --- initialize subraster parameters --- */ |
/* --- initialize subraster parameters --- */ |
/* sp->type = (!isstring?STRINGRASTER:ASCIISTRING); */ /*concatted string*/ |
/* sp->type = (!isstring?STRINGRASTER:ASCIISTRING); */ /*concatted string*/ |
if ( !isstring ) |
if ( !isstring ) |
sp->type = type2;/*(type1==type2?type2:IMAGERASTER);*/ /*string or image*/ |
sp->type = /*type2;*//*(type1==type2?type2:IMAGERASTER);*/ |
|
(type2!=CHARASTER? type2 : |
|
(type1!=CHARASTER&&type1!=BLANKSIGNAL |
|
&&type1!=FRACRASTER?type1:IMAGERASTER)); |
else |
else |
sp->type = ASCIISTRING; /* concatted ascii string */ |
sp->type = ASCIISTRING; /* concatted ascii string */ |
sp->symdef = symdef2; /* rightmost char is sp2 */ |
sp->symdef = symdef2; /* rightmost char is sp2 */ |
Line 1291 if ( msgfp!=NULL && msglevel>=9999 )
|
Line 1486 if ( msgfp!=NULL && msglevel>=9999 )
|
fflush(msgfp); } /* flush msgfp buffer */ |
fflush(msgfp); } /* flush msgfp buffer */ |
if ( !isstring ) |
if ( !isstring ) |
rastput (rp, sp1->image, base-base1, /* overlay left-hand */ |
rastput (rp, sp1->image, base-base1, /* overlay left-hand */ |
max2(0,nsquash-width1), 1); /* plus any residual squash space */ |
max2(0,nsmash-width1), 1); /* plus any residual smash space */ |
else |
else |
memcpy(rp->pixmap,(sp1->image)->pixmap,width1-1); /*init left string*/ |
memcpy(rp->pixmap,(sp1->image)->pixmap,width1-1); /*init left string*/ |
if ( msgfp!=NULL && msglevel>=9999 ) |
if ( msgfp!=NULL && msglevel>=9999 ) |
{ type_raster(sp->image,msgfp); /* display composite raster */ |
{ type_raster(sp->image,msgfp); /* display composite raster */ |
fflush(msgfp); } /* flush msgfp buffer */ |
fflush(msgfp); } /* flush msgfp buffer */ |
if ( !isstring ) |
if ( !isstring ) |
rastput (rp, sp2->image, base-base2, /* overlay right-hand */ |
{ int fracbase = ( isfrac? /* baseline for punc after \frac */ |
max2(0,width1+space-nsquash), isopaque); /* minus any squashed space */ |
max2(fraccenterline,base2):base ); /*adjust baseline or use original*/ |
|
rastput (rp, sp2->image, fracbase-base2, /* overlay right-hand */ |
|
max2(0,width1+space-nsmash), isopaque); /* minus any smashed space */ |
|
if ( 1 && type1 == FRACRASTER /* we're done with \frac image */ |
|
&& type2 != FRACRASTER ) /* unless we have \frac\frac */ |
|
fraccenterline = NOVALUE; /* so reset centerline signal */ |
|
if ( fraccenterline != NOVALUE ) /* sp2 is a fraction */ |
|
fraccenterline += (base-base2); } /* so adjust its centerline */ |
else |
else |
{ strcpy((char *)(rp->pixmap)+width1-1+space,(char *)((sp2->image)->pixmap)); |
{ strcpy((char *)(rp->pixmap)+width1-1+space,(char *)((sp2->image)->pixmap)); |
((char *)(rp->pixmap))[width1+width2+space-2] = '\000'; } /*null-term*/ |
((char *)(rp->pixmap))[width1+width2+space-2] = '\000'; } /*null-term*/ |
Line 1316 if ( isfree > 0 ) /* caller wants inpu
|
Line 1518 if ( isfree > 0 ) /* caller wants inpu
|
Back to caller with pointer to concatted subraster or with null for error |
Back to caller with pointer to concatted subraster or with null for error |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
end_of_job: |
end_of_job: |
squashmargin = oldsquashmargin; /* reset original squashmargin */ |
smashmargin = oldsmashmargin; /* reset original smashmargin */ |
return ( sp ); /* back with subraster or null ptr */ |
return ( sp ); /* back with subraster or null ptr */ |
} /* --- end-of-function rastcat() --- */ |
} /* --- end-of-function rastcat() --- */ |
|
|
Line 1487 end_of_job:
|
Line 1689 end_of_job:
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
* Function: rastsquash ( sp1, sp2 ) |
* Function: rastsmash ( sp1, sp2 ) |
* Purpose: When concatanating sp1||sp2, calculate #pixels |
* Purpose: When concatanating sp1||sp2, calculate #pixels |
* we can "squash sp2 left" |
* we can "smash sp2 left" |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Arguments: sp1 (I) subraster * to left-hand raster |
* Arguments: sp1 (I) subraster * to left-hand raster |
* sp2 (I) subraster * to right-hand raster |
* sp2 (I) subraster * to right-hand raster |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Returns: ( int ) max #pixels we can squash sp1||sp2, |
* Returns: ( int ) max #pixels we can smash sp1||sp2, |
* or "blanksignal" if sp2 intentionally blank, |
* or "blanksignal" if sp2 intentionally blank, |
* or 0 for any error. |
* or 0 for any error. |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Notes: o |
* Notes: o |
* ======================================================================= */ |
* ======================================================================= */ |
/* --- entry point --- */ |
/* --- entry point --- */ |
int rastsquash ( subraster *sp1, subraster *sp2 ) |
int rastsmash ( subraster *sp1, subraster *sp2 ) |
{ |
{ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
int nsquash = 0; /* #pixels to squash sp1||sp2 */ |
int nsmash = 0; /* #pixels to smash sp1||sp2 */ |
int base1 = sp1->baseline, /*baseline for left-hand subraster*/ |
int base1 = sp1->baseline, /*baseline for left-hand subraster*/ |
height1 = (sp1->image)->height, /* height for left-hand subraster */ |
height1 = (sp1->image)->height, /* height for left-hand subraster */ |
width1 = (sp1->image)->width, /* width for left-hand subraster */ |
width1 = (sp1->image)->width, /* width for left-hand subraster */ |
Line 1520 int base = max2(base1,base2), /* max asc
|
Line 1722 int base = max2(base1,base2), /* max asc
|
int irow1=0,irow2=0, icol=0; /* row,col indexes */ |
int irow1=0,irow2=0, icol=0; /* row,col indexes */ |
int firstcol1[1025], nfirst1=0, /* 1st sp1 col containing set pixel*/ |
int firstcol1[1025], nfirst1=0, /* 1st sp1 col containing set pixel*/ |
firstcol2[1025], nfirst2=0; /* 1st sp2 col containing set pixel*/ |
firstcol2[1025], nfirst2=0; /* 1st sp2 col containing set pixel*/ |
int blanksignal = (-991234); /*rastsquash signal right-hand blank*/ |
|
int smin=9999, xmin=9999,ymin=9999; /* min separation (s=x+y) */ |
int smin=9999, xmin=9999,ymin=9999; /* min separation (s=x+y) */ |
int type_raster(); /* display debugging output */ |
int type_raster(); /* display debugging output */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 1528 find right edge of sp1 and left edge of
|
Line 1729 find right edge of sp1 and left edge of
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- check args --- */ |
/* --- check args --- */ |
if ( isstring ) goto end_of_job; /* ignore string rasters */ |
if ( isstring ) goto end_of_job; /* ignore string rasters */ |
if ( height > 1023 ) goto end_of_job; /* don't try to squash huge image */ |
if ( 0 && istextmode ) goto end_of_job; /* don't smash in text mode */ |
|
if ( height > 1023 ) goto end_of_job; /* don't try to smash huge image */ |
if ( sp2->type == blanksignal ) /*blanksignal was propagated to us*/ |
if ( sp2->type == blanksignal ) /*blanksignal was propagated to us*/ |
goto end_of_job; /* don't squash intentional blank */ |
goto end_of_job; /* don't smash intentional blank */ |
/* --- init firstcol1[], firstcol2[] --- */ |
/* --- init firstcol1[], firstcol2[] --- */ |
for ( irow1=0; irow1<height; irow1++ ) /* for each row */ |
for ( irow1=0; irow1<height; irow1++ ) /* for each row */ |
firstcol1[irow1] = firstcol2[irow1] = blanksignal; /* signal empty rows */ |
firstcol1[irow1] = firstcol2[irow1] = blanksignal; /* signal empty rows */ |
Line 1542 for ( irow2=top2; irow2<=bot2; irow2++ )
|
Line 1744 for ( irow2=top2; irow2<=bot2; irow2++ )
|
nfirst2++; /* bump #rows containing set pixels*/ |
nfirst2++; /* bump #rows containing set pixels*/ |
break; } /* and go on to next row */ |
break; } /* and go on to next row */ |
if ( nfirst2 < 1 ) /*right-hand sp2 is completely blank*/ |
if ( nfirst2 < 1 ) /*right-hand sp2 is completely blank*/ |
{ nsquash = blanksignal; /* signal intentional blanks */ |
{ nsmash = blanksignal; /* signal intentional blanks */ |
goto end_of_job; } /* don't squash intentional blanks */ |
goto end_of_job; } /* don't smash intentional blanks */ |
/* --- now check if preceding image in sp1 was an intentional blank --- */ |
/* --- now check if preceding image in sp1 was an intentional blank --- */ |
if ( sp1->type == blanksignal ) /*blanksignal was propagated to us*/ |
if ( sp1->type == blanksignal ) /*blanksignal was propagated to us*/ |
goto end_of_job; /* don't squash intentional blank */ |
goto end_of_job; /* don't smash intentional blank */ |
/* --- set firstcol1[] indicating right edge of sp1 --- */ |
/* --- set firstcol1[] indicating right edge of sp1 --- */ |
for ( irow1=top1; irow1<=bot1; irow1++ ) /* for each row inside sp1 */ |
for ( irow1=top1; irow1<=bot1; irow1++ ) /* for each row inside sp1 */ |
for ( icol=width1-1; icol>=0; icol-- ) /* find last non-empty col in row */ |
for ( icol=width1-1; icol>=0; icol-- ) /* find last non-empty col in row */ |
Line 1555 for ( irow1=top1; irow1<=bot1; irow1++ )
|
Line 1757 for ( irow1=top1; irow1<=bot1; irow1++ )
|
nfirst1++; /* bump #rows containing set pixels*/ |
nfirst1++; /* bump #rows containing set pixels*/ |
break; } /* and go on to next row */ |
break; } /* and go on to next row */ |
if ( nfirst1 < 1 ) /*left-hand sp1 is completely blank*/ |
if ( nfirst1 < 1 ) /*left-hand sp1 is completely blank*/ |
goto end_of_job; /* don't squash intentional blanks */ |
goto end_of_job; /* don't smash intentional blanks */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
find minimum separation |
find minimum separation |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
for ( irow2=top2; irow2<=bot2; irow2++ ) { /* check each row inside sp2 */ |
for ( irow2=top2; irow2<=bot2; irow2++ ) { /* check each row inside sp2 */ |
int margin1, margin2=firstcol2[irow2]; /* #cols to first set pixel */ |
int margin1, margin2=firstcol2[irow2]; /* #cols to first set pixel */ |
if ( margin2 != blanksignal ) /* irow2 not an empty/blank row */ |
if ( margin2 != blanksignal ) { /* irow2 not an empty/blank row */ |
for ( irow1=max2(irow2-smin,top1); ; irow1++ ) |
for ( irow1=max2(irow2-smin,top1); ; irow1++ ) |
if ( irow1 > min2(irow2+smin,bot1) ) break; /* upper bound check */ |
if ( irow1 > min2(irow2+smin,bot1) ) break; /* upper bound check */ |
else |
else |
if ( (margin1=firstcol1[irow1]) != blanksignal ) { /*have non-blank row*/ |
if ( (margin1=firstcol1[irow1]) != blanksignal ) { /*have non-blank row*/ |
int dx=(margin1+margin2), dy=absval(irow2-irow1), ds=dx+dy; /* deltas */ |
int dx=(margin1+margin2), dy=absval(irow2-irow1), ds=dx+dy; /* deltas */ |
if ( ds >= smin ) continue; /* min unchanged */ |
if ( ds >= smin ) continue; /* min unchanged */ |
if ( dy>squashmargin && dx<xmin && smin<9999 ) continue; /* dy alone */ |
if ( dy>smashmargin && dx<xmin && smin<9999 ) continue; /* dy alone */ |
smin=ds; xmin=dx; ymin=dy; /* set new min */ |
smin=ds; xmin=dx; ymin=dy; /* set new min */ |
} /* --- end-of-if(margin1!=blanksignal) --- */ |
} /* --- end-of-if(margin1!=blanksignal) --- */ |
if ( smin<2 ) goto end_of_job; /* can't squash */ |
} /* --- end-of-if(margin2!=blanksignal) --- */ |
|
if ( smin<2 ) goto end_of_job; /* can't smash */ |
} /* --- end-of-for(irow2) --- */ |
} /* --- end-of-for(irow2) --- */ |
/*nsquash = min2(xmin,width2);*/ /* permissible squash */ |
/*nsmash = min2(xmin,width2);*/ /* permissible smash */ |
nsquash = xmin; /* permissible squash */ |
nsmash = xmin; /* permissible smash */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Back to caller with #pixels to squash sp1||sp2 |
Back to caller with #pixels to smash sp1||sp2 |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
end_of_job: |
end_of_job: |
/* --- debugging output --- */ |
/* --- debugging output --- */ |
if ( msgfp!=NULL && msglevel >= 99 ) /* display for debugging */ |
if ( msgfp!=NULL && msglevel >= 99 ) /* display for debugging */ |
{ fprintf(msgfp,"rastsquash> nsquash=%d, squashmargin=%d\n", |
{ fprintf(msgfp,"rastsmash> nsmash=%d, smashmargin=%d\n", |
nsquash,squashmargin); |
nsmash,smashmargin); |
if ( msglevel >= 999 ) /* also display rasters */ |
if ( msglevel >= 999 ) /* also display rasters */ |
{ fprintf(msgfp,"rastsquash>left-hand image...\n"); |
{ fprintf(msgfp,"rastsmash>left-hand image...\n"); |
if(sp1!=NULL) type_raster(sp1->image,msgfp); /* left image */ |
if(sp1!=NULL) type_raster(sp1->image,msgfp); /* left image */ |
fprintf(msgfp,"rastsquash>right-hand image...\n"); |
fprintf(msgfp,"rastsmash>right-hand image...\n"); |
if(sp2!=NULL) type_raster(sp2->image,msgfp); } /* right image */ |
if(sp2!=NULL) type_raster(sp2->image,msgfp); } /* right image */ |
fflush(msgfp); } |
fflush(msgfp); } |
return ( nsquash ); /* back with #squash pixels */ |
return ( nsmash ); /* back with #smash pixels */ |
} /* --- end-of-function rastsquash() --- */ |
} /* --- end-of-function rastsmash() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: rastsmashcheck ( term ) |
|
* Purpose: Check an exponent term to see if its leading symbol |
|
* would make smashing dangerous |
|
* -------------------------------------------------------------------------- |
|
* Arguments: term (I) char * to null-terminated string |
|
* containing right-hand exponent term about to |
|
* be smashed against existing left-hand. |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 1 if it's okay to smash term, or |
|
* 0 if smash is dangerous. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int rastsmashcheck ( char *term ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int isokay = 0; /* 1 to signal okay to caller */ |
|
static char nosmashchars[64] = "-.,="; /* don't smash these leading chars */ |
|
static char *nosmashstrs[64] = { "\\frac", NULL }; /* or leading strings */ |
|
static char *grayspace[64] = { "\\tiny", "\\small", "\\normalsize", |
|
"\\large", "\\Large", "\\LARGE", "\\huge", "\\Huge", NULL }; |
|
char *expression = term; /* local ptr to beginning of expression */ |
|
char *token = NULL; int i; /* token = nosmashstrs[i] or grayspace[i] */ |
|
/* ------------------------------------------------------------------------- |
|
see if smash check enabled |
|
-------------------------------------------------------------------------- */ |
|
if ( smashcheck < 1 ) { /* no smash checking wanted */ |
|
if ( smashcheck >= 0 ) /* -1 means check should always fail */ |
|
isokay = 1; /* otherwise (if 0), signal okay to smash */ |
|
goto end_of_job; } /* return to caller */ |
|
/* ------------------------------------------------------------------------- |
|
skip leading white and gray space |
|
-------------------------------------------------------------------------- */ |
|
/* --- first check input --- */ |
|
if ( term == NULL ) goto end_of_job; /* no input so return 0 to caller */ |
|
if ( *term == '\000' ) goto end_of_job; /* ditto for empty string */ |
|
/* --- skip leading white space --- */ |
|
skipwhite(term); /* skip leading white sapce */ |
|
if ( *term == '\000' ) goto end_of_job; /* nothing but white space */ |
|
/* --- skip leading gray space --- */ |
|
skipgray: |
|
for ( i=0; (token=grayspace[i]) != NULL; i++ ) /* check each grayspace */ |
|
if ( strncmp(term,token,strlen(token)) == 0 ) { /* found grayspace */ |
|
term += strlen(token); /* skip past this grayspace token */ |
|
if ( *term == '\000' ) { /* nothing left so quit */ |
|
if ( msgfp!=NULL && msglevel >= 99 ) /* display for debugging */ |
|
fprintf(msgfp,"rastsmashcheck> only grayspace in %.32s\n",expression); |
|
goto end_of_job; } |
|
goto skipgray; } /* restart grayspace check from beginning */ |
|
/* ------------------------------------------------------------------------- |
|
check for leading no-smash single char |
|
-------------------------------------------------------------------------- */ |
|
/* --- don't smash if term begins with a "nosmash" char --- */ |
|
if ( (token=strchr(nosmashchars,*term)) != NULL ) { |
|
if ( msgfp!=NULL && msglevel >= 99 ) /* display for debugging */ |
|
fprintf(msgfp,"rastsmashcheck> char %.1s found in %.32s\n",token,term); |
|
goto end_of_job; } |
|
/* ------------------------------------------------------------------------- |
|
check for leading no-smash token |
|
-------------------------------------------------------------------------- */ |
|
for ( i=0; (token=nosmashstrs[i]) != NULL; i++ ) /* check each nosmashstr */ |
|
if ( strncmp(term,token,strlen(token)) == 0 ) { /* found a nosmashstr */ |
|
if ( msgfp!=NULL && msglevel >= 99 ) /* display for debugging */ |
|
fprintf(msgfp,"rastsmashcheck> token %s found in %.32s\n",token,term); |
|
goto end_of_job; } /* so don't smash term */ |
|
/* ------------------------------------------------------------------------- |
|
back to caller |
|
-------------------------------------------------------------------------- */ |
|
isokay = 1; /* no problem, so signal okay to smash */ |
|
end_of_job: |
|
if ( msgfp!=NULL && msglevel >= 999 ) /* display for debugging */ |
|
fprintf(msgfp,"rastsmashcheck> returning isokay=%d for \"%.32s\"\n", |
|
isokay,(expression==NULL?"<no input>":expression)); |
|
return ( isokay ); /* back to caller with 1 if okay to smash */ |
|
} /* --- end-of-function rastsmashcheck() --- */ |
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
Line 1622 raster *new_raster(), *rp=NULL; /*raster
|
Line 1906 raster *new_raster(), *rp=NULL; /*raster
|
subraster *new_subraster(), *sp=NULL; /* subraster returning accent */ |
subraster *new_subraster(), *sp=NULL; /* subraster returning accent */ |
int delete_raster(), delete_subraster(); /*free allocated raster on err*/ |
int delete_raster(), delete_subraster(); /*free allocated raster on err*/ |
int line_raster(), /* draws lines */ |
int line_raster(), /* draws lines */ |
|
rule_raster(), /* draw solid boxes */ |
thickness = 1; /* line thickness */ |
thickness = 1; /* line thickness */ |
/*int pixval = (pixsz==1? 1 : (pixsz==8?255:(-1)));*/ /*black pixel value*/ |
/*int pixval = (pixsz==1? 1 : (pixsz==8?255:(-1)));*/ /*black pixel value*/ |
/* --- other working info --- */ |
/* --- other working info --- */ |
Line 1653 switch ( accent )
|
Line 1938 switch ( accent )
|
/* --- bar request --- */ |
/* --- bar request --- */ |
case UNDERBARACCENT: |
case UNDERBARACCENT: |
case BARACCENT: |
case BARACCENT: |
thickness = height-1; /* adjust thickness */ |
thickness = 1; /*height-1;*/ /* adjust thickness */ |
if ( accent == BARACCENT ) /* bar is above expression */ |
if ( accent == BARACCENT ) /* bar is above expression */ |
line_raster(rp,0,0,0,width-1,thickness); /*leave blank line at bot*/ |
{ row0 = row1 = max2(height-3,0); /* row numbers for overbar */ |
|
line_raster(rp,row0,0,row1,width-1,thickness); } /*blanks at bot*/ |
else /* underbar is below expression */ |
else /* underbar is below expression */ |
line_raster(rp,1,0,1,width-1,thickness); /*leave blank line at top*/ |
{ row0 = row1 = min2(2,height-1); /* row numbers for underbar */ |
|
line_raster(rp,row0,0,row1,width-1,thickness); } /*blanks at top*/ |
break; |
break; |
/* --- dot request --- */ |
/* --- dot request --- */ |
case DOTACCENT: |
case DOTACCENT: |
thickness = height-1; /* adjust thickness */ |
thickness = height-1; /* adjust thickness */ |
line_raster(rp,0,width/2,1,(width/2)+1,thickness); /* centered dot */ |
/*line_raster(rp,0,width/2,1,(width/2)+1,thickness);*//*centered dot*/ |
|
rule_raster(rp,0,(width+1-thickness)/2,thickness,thickness,3); /*box*/ |
break; |
break; |
/* --- ddot request --- */ |
/* --- ddot request --- */ |
case DDOTACCENT: |
case DDOTACCENT: |
thickness = height-1; /* adjust thickness */ |
thickness = height-1; /* adjust thickness */ |
col0 = max2(width/3-(thickness-1),0); /* one-third of width */ |
col0 = max2((width+1)/3-(thickness/2)-1,0); /* one-third of width */ |
col1 = min2((2*width)/3+(thickness-1),width-thickness); /*two thirds*/ |
col1 = min2((2*width+1)/3-(thickness/2)+1,width-thickness); /*2/3rds*/ |
line_raster(rp,0,col0,1,col0+1,thickness); /* set a dot at 1st third*/ |
if ( col0+thickness >= col1 ) /* dots overlap */ |
line_raster(rp,0,col1,1,col1+1,thickness); /* and another at 2nd */ |
{ col0 = max2(col0-1,0); /* try moving left dot more left */ |
|
col1 = min2(col1+1,width-thickness); } /* and right dot right */ |
|
if ( col0+thickness >= col1 ) /* dots _still_ overlap */ |
|
thickness = max2(thickness-1,1); /* so try reducing thickness */ |
|
/*line_raster(rp,0,col0,1,col0+1,thickness);*//*set dot at 1st third*/ |
|
/*line_raster(rp,0,col1,1,col1+1,thickness);*//*and another at 2nd*/ |
|
rule_raster(rp,0,col0,thickness,thickness,3); /*box at 1st third*/ |
|
rule_raster(rp,0,col1,thickness,thickness,3); /*box at 2nd third*/ |
break; |
break; |
/* --- hat request --- */ |
/* --- hat request --- */ |
case HATACCENT: |
case HATACCENT: |
thickness = (width<=12? 2 : 3); /* adjust thickness */ |
thickness = 1; /*(width<=12? 2 : 3);*/ /* adjust thickness */ |
line_raster(rp,height-1,0,0,width/2,thickness); /* / part of hat*/ |
line_raster(rp,height-1,0,0,width/2,thickness); /* / part of hat*/ |
line_raster(rp,0,(width-1)/2,height-1,width-1,thickness); /* \ part*/ |
line_raster(rp,0,(width-1)/2,height-1,width-1,thickness); /* \ part*/ |
break; |
break; |
Line 1724 switch ( accent )
|
Line 2019 switch ( accent )
|
if ( (sp=rastack(new_subraster(1,1,pixsz),accsp,1,0,1,3))/*space below*/ |
if ( (sp=rastack(new_subraster(1,1,pixsz),accsp,1,0,1,3))/*space below*/ |
!= NULL ) /* have tilde with space below it */ |
!= NULL ) /* have tilde with space below it */ |
{ rp = sp->image; /* "extract" raster with bitmap */ |
{ rp = sp->image; /* "extract" raster with bitmap */ |
free((void *)sp); } /* and free subraster "envelope" */ |
free((void *)sp); /* and free subraster "envelope" */ |
|
leftsymdef = NULL; } /* so \tilde{x}^2 works properly */ |
break; |
break; |
} /* --- end-of-outer-switch(accent) --- */ |
} /* --- end-of-outer-switch(accent) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
if we constructed accent raster okay, embed it in a subraster and return it |
if we constructed accent raster okay, embed it in a subraster and return it |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- if all okay, allocate subraster to contain constructed raster --- */ |
/* --- if all okay, allocate subraster to contain constructed raster --- */ |
if ( rp != NULL ) /* accent raster constructed okay */ |
if ( rp != NULL ) { /* accent raster constructed okay */ |
if ( (sp=new_subraster(0,0,0)) /* allocate subraster "envelope" */ |
if ( (sp=new_subraster(0,0,0)) /* allocate subraster "envelope" */ |
== NULL ) /* and if we fail to allocate */ |
== NULL ) /* and if we fail to allocate */ |
delete_raster(rp); /* free now-unneeded raster */ |
delete_raster(rp); /* free now-unneeded raster */ |
Line 1741 if ( rp != NULL ) /* accent raster con
|
Line 2037 if ( rp != NULL ) /* accent raster con
|
sp->image = rp; /* raster we just constructed */ |
sp->image = rp; /* raster we just constructed */ |
sp->size = (-1); /* can't set font size here */ |
sp->size = (-1); /* can't set font size here */ |
sp->baseline = 0; } /* can't set baseline here */ |
sp->baseline = 0; } /* can't set baseline here */ |
|
} /* --- end-of-if(rp!=NULL) --- */ |
/* --- return subraster containing desired accent to caller --- */ |
/* --- return subraster containing desired accent to caller --- */ |
return ( sp ); /* return accent or NULL to caller */ |
return ( sp ); /* return accent or NULL to caller */ |
} /* --- end-of-function accent_subraster() --- */ |
} /* --- end-of-function accent_subraster() --- */ |
Line 1774 Allocations and Declarations
|
Line 2071 Allocations and Declarations
|
subraster *new_subraster(), *arrowsp=NULL; /* allocate arrow subraster */ |
subraster *new_subraster(), *arrowsp=NULL; /* allocate arrow subraster */ |
int rule_raster(); /* draw arrow line */ |
int rule_raster(); /* draw arrow line */ |
int irow, midrow=height/2; /* index, midrow is arrowhead apex */ |
int irow, midrow=height/2; /* index, midrow is arrowhead apex */ |
int icol, thickness=(height>15?2:1); /* arrowhead thickness and index */ |
int icol, thickness=(height>15?2:2); /* arrowhead thickness and index */ |
int pixval = (pixsz==1? 1 : (pixsz==8?255:(-1))); /* black pixel value */ |
int pixval = (pixsz==1? 1 : (pixsz==8?255:(-1))); /* black pixel value */ |
int ipix, /* raster pixmap[] index */ |
int ipix, /* raster pixmap[] index */ |
npix = width*height; /* #pixels malloced in pixmap[] */ |
npix = width*height; /* #pixels malloced in pixmap[] */ |
Line 1800 for ( irow=0; irow<height; irow++ ) /*
|
Line 2097 for ( irow=0; irow<height; irow++ ) /*
|
if ( drctn >= 0 ) /* right arrowhead wanted */ |
if ( drctn >= 0 ) /* right arrowhead wanted */ |
for ( icol=0; icol<thickness; icol++ ) /* for arrowhead thickness */ |
for ( icol=0; icol<thickness; icol++ ) /* for arrowhead thickness */ |
{ ipix = ((irow+1)*width - 1) - delta - icol; /* rightmost-delta-icol */ |
{ ipix = ((irow+1)*width - 1) - delta - icol; /* rightmost-delta-icol */ |
if ( ipix >= 0 ) /* bounds check */ |
if ( ipix >= 0 ) { /* bounds check */ |
if ( pixsz == 1 ) /* have a bitmap */ |
if ( pixsz == 1 ) /* have a bitmap */ |
setlongbit((arrowsp->image)->pixmap,ipix);/*turn on arrowhead bit*/ |
setlongbit((arrowsp->image)->pixmap,ipix);/*turn on arrowhead bit*/ |
else /* should have a bytemap */ |
else /* should have a bytemap */ |
if ( pixsz == 8 ) /* check pixsz for bytemap */ |
if ( pixsz == 8 ) /* check pixsz for bytemap */ |
((arrowsp->image)->pixmap)[ipix] = pixval; } /*set arrowhead byte*/ |
((arrowsp->image)->pixmap)[ipix] = pixval; } }/*set arrowhead byte*/ |
/* --- left arrowhead (same as right except for ipix calculation) --- */ |
/* --- left arrowhead (same as right except for ipix calculation) --- */ |
if ( drctn <= 0 ) /* left arrowhead wanted */ |
if ( drctn <= 0 ) /* left arrowhead wanted */ |
for ( icol=0; icol<thickness; icol++ ) /* for arrowhead thickness */ |
for ( icol=0; icol<thickness; icol++ ) /* for arrowhead thickness */ |
{ ipix = irow*width + delta + icol; /* leftmost bit+delta+icol */ |
{ ipix = irow*width + delta + icol; /* leftmost bit+delta+icol */ |
if ( ipix < npix ) /* bounds check */ |
if ( ipix < npix ) { /* bounds check */ |
if ( pixsz == 1 ) /* have a bitmap */ |
if ( pixsz == 1 ) /* have a bitmap */ |
setlongbit((arrowsp->image)->pixmap,ipix);/*turn on arrowhead bit*/ |
setlongbit((arrowsp->image)->pixmap,ipix);/*turn on arrowhead bit*/ |
else /* should have a bytemap */ |
else /* should have a bytemap */ |
if ( pixsz == 8 ) /* check pixsz for bytemap */ |
if ( pixsz == 8 ) /* check pixsz for bytemap */ |
((arrowsp->image)->pixmap)[ipix] = pixval; } /*set arrowhead byte*/ |
((arrowsp->image)->pixmap)[ipix] = pixval; } }/*set arrowhead byte*/ |
} /* --- end-of-for(irow) --- */ |
} /* --- end-of-for(irow) --- */ |
end_of_job: |
end_of_job: |
return ( arrowsp ); /*back to caller with arrow or NULL*/ |
return ( arrowsp ); /*back to caller with arrow or NULL*/ |
Line 1850 Allocations and Declarations
|
Line 2147 Allocations and Declarations
|
subraster *new_subraster(), *arrowsp=NULL; /* allocate arrow subraster */ |
subraster *new_subraster(), *arrowsp=NULL; /* allocate arrow subraster */ |
int rule_raster(); /* draw arrow line */ |
int rule_raster(); /* draw arrow line */ |
int icol, midcol=width/2; /* index, midcol is arrowhead apex */ |
int icol, midcol=width/2; /* index, midcol is arrowhead apex */ |
int irow, thickness=(width>15?2:1); /* arrowhead thickness and index */ |
int irow, thickness=(width>15?2:2); /* arrowhead thickness and index */ |
int pixval = (pixsz==1? 1 : (pixsz==8?255:(-1))); /* black pixel value */ |
int pixval = (pixsz==1? 1 : (pixsz==8?255:(-1))); /* black pixel value */ |
int ipix, /* raster pixmap[] index */ |
int ipix, /* raster pixmap[] index */ |
npix = width*height; /* #pixels malloced in pixmap[] */ |
npix = width*height; /* #pixels malloced in pixmap[] */ |
Line 1876 for ( icol=0; icol<width; icol++ ) /* f
|
Line 2173 for ( icol=0; icol<width; icol++ ) /* f
|
if ( drctn >= 0 ) /* up arrowhead wanted */ |
if ( drctn >= 0 ) /* up arrowhead wanted */ |
for ( irow=0; irow<thickness; irow++ ) /* for arrowhead thickness */ |
for ( irow=0; irow<thickness; irow++ ) /* for arrowhead thickness */ |
{ ipix = (irow+delta)*width + icol; /* leftmost+icol */ |
{ ipix = (irow+delta)*width + icol; /* leftmost+icol */ |
if ( ipix < npix ) /* bounds check */ |
if ( ipix < npix ) { /* bounds check */ |
if ( pixsz == 1 ) /* have a bitmap */ |
if ( pixsz == 1 ) /* have a bitmap */ |
setlongbit((arrowsp->image)->pixmap,ipix);/*turn on arrowhead bit*/ |
setlongbit((arrowsp->image)->pixmap,ipix);/*turn on arrowhead bit*/ |
else /* should have a bytemap */ |
else /* should have a bytemap */ |
if ( pixsz == 8 ) /* check pixsz for bytemap */ |
if ( pixsz == 8 ) /* check pixsz for bytemap */ |
((arrowsp->image)->pixmap)[ipix] = pixval; } /*set arrowhead byte*/ |
((arrowsp->image)->pixmap)[ipix] = pixval; } }/*set arrowhead byte*/ |
/* --- down arrowhead (same as up except for ipix calculation) --- */ |
/* --- down arrowhead (same as up except for ipix calculation) --- */ |
if ( drctn <= 0 ) /* down arrowhead wanted */ |
if ( drctn <= 0 ) /* down arrowhead wanted */ |
for ( irow=0; irow<thickness; irow++ ) /* for arrowhead thickness */ |
for ( irow=0; irow<thickness; irow++ ) /* for arrowhead thickness */ |
{ ipix = (height-1-delta-irow)*width + icol; /* leftmost + icol */ |
{ ipix = (height-1-delta-irow)*width + icol; /* leftmost + icol */ |
if ( ipix > 0 ) /* bounds check */ |
if ( ipix > 0 ) { /* bounds check */ |
if ( pixsz == 1 ) /* have a bitmap */ |
if ( pixsz == 1 ) /* have a bitmap */ |
setlongbit((arrowsp->image)->pixmap,ipix);/*turn on arrowhead bit*/ |
setlongbit((arrowsp->image)->pixmap,ipix);/*turn on arrowhead bit*/ |
else /* should have a bytemap */ |
else /* should have a bytemap */ |
if ( pixsz == 8 ) /* check pixsz for bytemap */ |
if ( pixsz == 8 ) /* check pixsz for bytemap */ |
((arrowsp->image)->pixmap)[ipix] = pixval; } /*set arrowhead byte*/ |
((arrowsp->image)->pixmap)[ipix] = pixval; } }/*set arrowhead byte*/ |
} /* --- end-of-for(irow) --- */ |
} /* --- end-of-for(icol) --- */ |
end_of_job: |
end_of_job: |
return ( arrowsp ); /*back to caller with arrow or NULL*/ |
return ( arrowsp ); /*back to caller with arrow or NULL*/ |
} /* --- end-of-function uparrow_subraster() --- */ |
} /* --- end-of-function uparrow_subraster() --- */ |
Line 1913 end_of_job:
|
Line 2210 end_of_job:
|
* height (I) int containing number of rows for rule |
* height (I) int containing number of rows for rule |
* type (I) int containing 0 for solid rule, |
* type (I) int containing 0 for solid rule, |
* 1 for horizontal dashes, 2 for vertical |
* 1 for horizontal dashes, 2 for vertical |
|
* 3 for solid rule with corners removed (bevel) |
|
* 4 for strut (nothing drawn) |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Returns: ( int ) 1 if rule drawn okay, |
* Returns: ( int ) 1 if rule drawn okay, |
* or 0 for any error. |
* or 0 for any error. |
Line 1928 int rule_raster ( raster *rp, int top, i
|
Line 2227 int rule_raster ( raster *rp, int top, i
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
int irow, icol; /* indexes over rp raster */ |
int irow=0, icol=0; /* indexes over rp raster */ |
int ipix, /* raster pixmap[] index */ |
int ipix = 0, /* raster pixmap[] index */ |
npix = rp->width * rp->height; /* #pixels malloced in rp->pixmap[] */ |
npix = rp->width * rp->height; /* #pixels malloced in rp->pixmap[] */ |
int isfatal = 0; /* true to abend on out-of-bounds error */ |
int isfatal = 0; /* true to abend on out-of-bounds error */ |
int hdash=1, vdash=2; /* type for horizontal, vertical dashes */ |
int hdash=1, vdash=2, /* type for horizontal, vertical dashes */ |
|
bevel=99/*3*/, strut=4; /* type for bevel (turned off), strut */ |
int dashlen=3, spacelen=2, /* #pixels for dash followed by space */ |
int dashlen=3, spacelen=2, /* #pixels for dash followed by space */ |
isdraw=1; /* true when drawing dash (init for solid) */ |
isdraw=1; /* true when drawing dash (init for solid) */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Check args |
Check args |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( rp == (raster *)NULL ) /* no raster arg supplied */ |
if ( rp == (raster *)NULL ) { /* no raster arg supplied */ |
if ( workingbox != (subraster *)NULL ) /* see if we have a workingbox */ |
if ( workingbox != (subraster *)NULL ) /* see if we have a workingbox */ |
rp = workingbox->image; /* use workingbox if possible */ |
rp = workingbox->image; /* use workingbox if possible */ |
else return ( 0 ); /* otherwise signal error to caller */ |
else return ( 0 ); } /* otherwise signal error to caller */ |
|
if ( type == bevel ) /* remove corners of solid box */ |
|
if ( width<3 || height<3 ) type=0; /* too small to remove corners */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Fill line/box |
Fill line/box |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
for ( irow=top; irow<top+height; irow++ ) /*each scan line*/ |
if ( width > 0 ) /* zero width implies strut*/ |
|
for ( irow=top; irow<top+height; irow++ ) /* for each scan line */ |
{ |
{ |
|
if ( type == strut ) isdraw = 0; /* draw nothing for strut */ |
if ( type == vdash ) /*set isdraw for vert dash*/ |
if ( type == vdash ) /*set isdraw for vert dash*/ |
isdraw = (((irow-top)%(dashlen+spacelen)) < dashlen); |
isdraw = (((irow-top)%(dashlen+spacelen)) < dashlen); |
ipix = irow*rp->width + left - 1; /*first pixel preceding icol*/ |
ipix = irow*rp->width + left - 1; /*first pixel preceding icol*/ |
for ( icol=left; icol<left+width; icol++ ) /* each pixel in scan line */ |
for ( icol=left; icol<left+width; icol++ ) /* each pixel in scan line */ |
{ |
{ |
|
if ( type == bevel ) { /* remove corners of box */ |
|
if ( (irow==top && icol==left) /* top-left corner */ |
|
|| (irow==top && icol>=left+width-1) /* top-right corner */ |
|
|| (irow>=top+height-1 && icol==left) /* bottom-left corner */ |
|
|| (irow>=top+height-1 && icol>=left+width-1) ) /* bottom-right */ |
|
isdraw = 0; else isdraw = 1; } /*set isdraw to skip corner*/ |
if ( type == hdash ) /*set isdraw for horiz dash*/ |
if ( type == hdash ) /*set isdraw for horiz dash*/ |
isdraw = (((icol-left)%(dashlen+spacelen)) < dashlen); |
isdraw = (((icol-left)%(dashlen+spacelen)) < dashlen); |
if ( ++ipix >= npix ) /* bounds check failed */ |
if ( ++ipix >= npix ) /* bounds check failed */ |
if ( isfatal ) goto end_of_job; /* abort if error is fatal */ |
if ( isfatal ) goto end_of_job; /* abort if error is fatal */ |
else break; /*or just go on to next row*/ |
else break; /*or just go on to next row*/ |
else /*ibit is within rp bounds*/ |
else /*ibit is within rp bounds*/ |
if ( isdraw ) /*and we're drawing this bit*/ |
if ( isdraw ) { /*and we're drawing this bit*/ |
if ( rp->pixsz == 1 ) /* have a bitmap */ |
if ( rp->pixsz == 1 ) /* have a bitmap */ |
setlongbit(rp->pixmap,ipix); /* so turn on bit in line */ |
setlongbit(rp->pixmap,ipix); /* so turn on bit in line */ |
else /* should have a bytemap */ |
else /* should have a bytemap */ |
if ( rp->pixsz == 8 ) /* check pixsz for bytemap */ |
if ( rp->pixsz == 8 ) /* check pixsz for bytemap */ |
((unsigned char *)(rp->pixmap))[ipix] = 255; /* set black byte */ |
((unsigned char *)(rp->pixmap))[ipix] = 255; } /* set black byte */ |
} /* --- end-of-for(icol) --- */ |
} /* --- end-of-for(icol) --- */ |
} /* --- end-of-for(irow) --- */ |
} /* --- end-of-for(irow) --- */ |
end_of_job: |
end_of_job: |
Line 2008 int line_raster ( raster *rp, int row0,
|
Line 2318 int line_raster ( raster *rp, int row0,
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
int irow, icol, /* indexes over rp raster */ |
int irow=0, icol=0, /* indexes over rp raster */ |
locol=col0, hicol=col1, /* col limits at irow */ |
locol=col0, hicol=col1, /* col limits at irow */ |
lorow=row0, hirow=row1; /* row limits at icol */ |
lorow=row0, hirow=row1; /* row limits at icol */ |
int ipix, /* raster pixmap[] index */ |
int width=rp->width, height=rp->height; /* dimensions of input raster */ |
npix = rp->width * rp->height; /* #pixels malloced in rp->pixmap[] */ |
int ipix = 0, /* raster pixmap[] index */ |
|
npix = width*height; /* #pixels malloced in rp->pixmap[] */ |
int isfatal = 0; /* true to abend on out-of-bounds error */ |
int isfatal = 0; /* true to abend on out-of-bounds error */ |
int isline=(row1==row0), isbar=(col1==col0); /*true if slope a=0,\infty*/ |
int isline=(row1==row0), isbar=(col1==col0); /*true if slope a=0,\infty*/ |
double dy = row1-row0 /* + (row1>=row0? +1.0 : -1.0) */, /* delta-x */ |
double dy = row1-row0 /* + (row1>=row0? +1.0 : -1.0) */, /* delta-x */ |
dx = col1-col0 /* + (col1>=col0? +1.0 : -1.0) */, /* delta-y */ |
dx = col1-col0 /* + (col1>=col0? +1.0 : -1.0) */, /* delta-y */ |
a= (isbar||isline? 0.0 : dy/dx), /* slope = tan(theta) = dy/dx */ |
a= (isbar||isline? 0.0 : dy/dx), /* slope = tan(theta) = dy/dx */ |
xcol, xrow; /* calculated col at irow, or row at icol */ |
xcol=0, xrow=0; /* calculated col at irow, or row at icol */ |
double ar = ASPECTRATIO, /* aspect ratio width/height of one pixel */ |
double ar = ASPECTRATIO, /* aspect ratio width/height of one pixel */ |
xwidth= (isline? 0.0 : /*#pixels per row to get sloped line thcknss*/ |
xwidth= (isline? 0.0 : /*#pixels per row to get sloped line thcknss*/ |
((double)thickness)*sqrt((dx*dx)+(dy*dy*ar*ar))/fabs(dy*ar)), |
((double)thickness)*sqrt((dx*dx)+(dy*dy*ar*ar))/fabs(dy*ar)), |
Line 2027 int line_recurse(), isrecurse=1; /* true
|
Line 2338 int line_recurse(), isrecurse=1; /* true
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Check args |
Check args |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( rp == (raster *)NULL ) /* no raster arg supplied */ |
if ( rp == (raster *)NULL ) { /* no raster arg supplied */ |
if ( workingbox != (subraster *)NULL ) /* see if we have a workingbox */ |
if ( workingbox != (subraster *)NULL ) /* see if we have a workingbox */ |
rp = workingbox->image; /* use workingbox if possible */ |
rp = workingbox->image; /* use workingbox if possible */ |
else return ( 0 ); /* otherwise signal error to caller */ |
else return ( 0 ); } /* otherwise signal error to caller */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Initialization |
Initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( msgfp!=NULL && msglevel>=29 ) /* debugging */ |
if ( msgfp!=NULL && msglevel>=29 ) { /* debugging */ |
fprintf(msgfp,"line_raster> row,col0=%d,%d row,col1=%d,%d, thickness=%d\n" |
fprintf(msgfp,"line_raster> row,col0=%d,%d row,col1=%d,%d, thickness=%d\n" |
"\t dy,dx=%3.1f,%3.1f, a=%4.3f, xwidth=%4.3f\n", |
"\t dy,dx=%3.1f,%3.1f, a=%4.3f, xwidth=%4.3f\n", |
row0,col0, row1,col1, thickness, dy,dx, a, xwidth); |
row0,col0, row1,col1, thickness, dy,dx, a, xwidth); fflush(msgfp); } |
/* --- check for recursive line drawing --- */ |
/* --- check for recursive line drawing --- */ |
if ( isrecurse ) /* drawing lines recursively */ |
if ( isrecurse ) { /* drawing lines recursively */ |
{ line_recurse(rp,(double)row0,(double)col0, |
for ( irow=0; irow<thickness; irow++ ) /* each line 1 pixel thick */ |
(double)row1,(double)col1,thickness); |
{ double xrow0=(double)row0, xcol0=(double)col0, |
return ( 1 ); } |
xrow1=(double)row1, xcol1=(double)col1; |
|
if ( isline ) xrow0 = xrow1 = (double)(row0+irow); |
|
else if ( isbar ) xcol0 = xcol1 = (double)(col0+irow); |
|
if( xrow0>(-0.001) && xcol0>(-0.001) /*check line inside raster*/ |
|
&& xrow1<((double)(height-1)+0.001) && xcol1<((double)(width-1)+0.001) ) |
|
line_recurse(rp,xrow0,xcol0,xrow1,xcol1,thickness); } |
|
return ( 1 ); } |
/* --- set params for horizontal line or vertical bar --- */ |
/* --- set params for horizontal line or vertical bar --- */ |
if ( isline ) /*interpret row as top row*/ |
if ( isline ) /*interpret row as top row*/ |
row1 = row0 + (thickness-1); /* set bottom row for line */ |
row1 = row0 + (thickness-1); /* set bottom row for line */ |
Line 2499 Allocations and Declarations
|
Line 2816 Allocations and Declarations
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
raster *new_raster(), *bp=(raster *)NULL; /*raster back to caller*/ |
raster *new_raster(), *bp=(raster *)NULL; /*raster back to caller*/ |
int rastput(); /* overlay rp in new bordered raster */ |
int rastput(); /* overlay rp in new bordered raster */ |
int width = (rp==NULL?0:rp->width), /* height of raster */ |
int width = (rp==NULL?0:rp->width), /* width of raster */ |
height = (rp==NULL?0:rp->height), /* width of raster */ |
height = (rp==NULL?0:rp->height), /* height of raster */ |
istopneg=0, isbotneg=0, /* true if ntop or nbot negative */ |
istopneg=0, isbotneg=0, /* true if ntop or nbot negative */ |
leftmargin = 0; /* adjust width to whole number of bytes */ |
leftmargin = 0; /* adjust width to whole number of bytes */ |
int delete_raster(); /* to free input rp if isdelete is true */ |
int delete_raster(); /* free input rp if isfree is true */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Initialization |
Initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 2563 end_of_job:
|
Line 2880 end_of_job:
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: backspace_raster ( rp, nback, pback, minspace, isfree ) |
|
* Purpose: Allocate a new raster containing a copy of input rp, |
|
* but with trailing nback columns removed. |
|
* If minspace>=0 then (at least) that many columns |
|
* of whitespace will be left in place, regardless of nback. |
|
* If minspace<0 then existing black pixels will be deleted |
|
* as required. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster on which a border |
|
* is to be placed |
|
* nback (I) int containing number of columns to |
|
* backspace (>=0) |
|
* pback (O) ptr to int returning #pixels actually |
|
* backspaced (or NULL to not use) |
|
* minspace (I) int containing number of columns |
|
* of whitespace to be left in place |
|
* isfree (I) int containing true to free rp before return |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( raster * ) ptr to backspaced raster, |
|
* or NULL for any error. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o For \! negative space, for \hspace{-10}, etc. |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
raster *backspace_raster ( raster *rp, int nback, int *pback, int minspace, |
|
int isfree ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
raster *new_raster(), *bp=(raster *)NULL; /* raster returned to caller */ |
|
int delete_raster(); /* free input rp if isfree is true */ |
|
int width = (rp==NULL?0:rp->width), /* original width of raster */ |
|
height = (rp==NULL?0:rp->height), /* height of raster */ |
|
mback = nback, /* nback adjusted for minspace */ |
|
newwidth = width, /* adjusted width after backspace */ |
|
icol=0, irow=0; /* col,row index */ |
|
if ( rp == NULL ) goto end_of_job; /* no input given */ |
|
/* ------------------------------------------------------------------------- |
|
locate rightmost column of rp containing ink, and determine backspaced width |
|
-------------------------------------------------------------------------- */ |
|
/* --- locate rightmost column of rp containing ink --- */ |
|
if ( minspace >= 0 ) /* only needed if given minspace */ |
|
for ( icol=width-1; icol>=0; icol-- ) /* find first non-empty col in row */ |
|
for ( irow=0; irow<height; irow++ ) /* for each row inside rp */ |
|
if ( getpixel(rp,irow,icol) != 0 ) { /* found a set pixel */ |
|
int whitecols = (width-1) - icol; /* #cols containing white space */ |
|
mback = min2(nback,max2(0,whitecols-minspace)); /*leave minspace cols*/ |
|
goto gotright; } /* no need to look further */ |
|
/* --- determine width of new backspaced raster --- */ |
|
gotright: /* found col with ink (or rp empty)*/ |
|
if ( mback > width ) mback = width; /* can't backspace before beginning*/ |
|
newwidth = max2(1,width-mback); /* #cols in backspaced raster */ |
|
if ( pback != NULL ) *pback = width-newwidth; /* caller wants #pixels */ |
|
/* ------------------------------------------------------------------------- |
|
allocate new raster and fill it with leftmost cols of rp |
|
-------------------------------------------------------------------------- */ |
|
/* --- allocate backspaced raster --- */ |
|
if ( (bp=new_raster(newwidth,height,rp->pixsz)) /*allocate backspaced raster*/ |
|
== (raster *)NULL ) goto end_of_job; /* and quit if failed */ |
|
/* --- fill new raster --- */ |
|
if ( width-nback > 0 ) /* don't fill 1-pixel wide empty bp*/ |
|
for ( icol=0; icol<newwidth; icol++ ) /* find first non-empty col in row */ |
|
for ( irow=0; irow<height; irow++ ) /* for each row inside rp */ |
|
{ int value = getpixel(rp,irow,icol); /* original pixel at irow,icol */ |
|
setpixel(bp,irow,icol,value); } /* saved in backspaced raster */ |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with backspaced raster (or null for any error) |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
if ( msgfp!=NULL && msglevel>=999 ) { fprintf(msgfp, /* diagnostics */ |
|
"backspace_raster> nback=%d,minspace=%d,mback=%d, width:old=%d,new=%d\n", |
|
nback,minspace,mback,width,newwidth); fflush(msgfp); } |
|
if ( isfree && bp!=NULL ) delete_raster(rp); /* free original raster */ |
|
return ( bp ); /* back with backspaced or null ptr*/ |
|
} /* --- end-of-function backspace_raster() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: type_raster ( rp, fp ) |
* Function: type_raster ( rp, fp ) |
* Purpose: Emit an ascii dump representing rp, on fp. |
* Purpose: Emit an ascii dump representing rp, on fp. |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 2588 static char display_chars[16] = /* displ
|
Line 2984 static char display_chars[16] = /* displ
|
char scanline[133]; /* ascii image for one scan line */ |
char scanline[133]; /* ascii image for one scan line */ |
int scan_width; /* #chars in scan (<=display_width)*/ |
int scan_width; /* #chars in scan (<=display_width)*/ |
int irow, locol,hicol=(-1); /* height index, width indexes */ |
int irow, locol,hicol=(-1); /* height index, width indexes */ |
|
raster *gftobitmap(), *bitmaprp=rp; /* convert .gf to bitmap if needed */ |
|
int delete_raster(); /*free bitmap converted for display*/ |
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
initialization |
initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- redirect null fp --- */ |
/* --- redirect null fp --- */ |
if ( fp == (FILE *)NULL ) fp = stdout; /* default fp to stdout if null */ |
if ( fp == (FILE *)NULL ) fp = stdout; /* default fp to stdout if null */ |
|
if ( msglevel >= 999 ) { fprintf(fp, /* debugging diagnostics */ |
|
"type_raster> width=%d height=%d ...\n", |
|
rp->width,rp->height); fflush(fp); } |
/* --- check for ascii string --- */ |
/* --- check for ascii string --- */ |
if ( isstring /* pixmap has string, not raster */ |
if ( isstring /* pixmap has string, not raster */ |
|| (1 && rp->height==1) ) /* infer input rp is a string */ |
|| (0 && rp->height==1) ) /* infer input rp is a string */ |
{ |
{ |
char *string = (char *)(rp->pixmap); /*interpret pixmap as ascii string*/ |
char *string = (char *)(rp->pixmap); /*interpret pixmap as ascii string*/ |
int width = strlen(string); /* #chars in ascii string */ |
int width = strlen(string); /* #chars in ascii string */ |
Line 2609 if ( isstring /* pixmap has string, n
|
Line 3010 if ( isstring /* pixmap has string, n
|
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
display ascii dump of bitmap image (in segments if display_width < rp->width) |
display ascii dump of bitmap image (in segments if display_width < rp->width) |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
while ( (locol=hicol+1) < rp->width ) /*start where prev segment left off*/ |
if ( rp->format == 2 /* input is .gf-formatted */ |
|
|| rp->format == 3 ) |
|
bitmaprp = gftobitmap(rp); /* so convert it for display */ |
|
if ( bitmaprp != NULL ) /* if we have image for display */ |
|
while ( (locol=hicol+1) < rp->width ) /*start where prev segment left off*/ |
{ |
{ |
/* --- set hicol for this pass (locol set above) --- */ |
/* --- set hicol for this pass (locol set above) --- */ |
hicol += display_width; /* show as much as display allows */ |
hicol += display_width; /* show as much as display allows */ |
Line 2626 while ( (locol=hicol+1) < rp->width ) /*
|
Line 3031 while ( (locol=hicol+1) < rp->width ) /*
|
lopix = irow*rp->width + locol; /*first pixmap[] pixel in this scan*/ |
lopix = irow*rp->width + locol; /*first pixmap[] pixel in this scan*/ |
/* --- set chars in scanline[] based on pixels in rp->pixmap[] --- */ |
/* --- set chars in scanline[] based on pixels in rp->pixmap[] --- */ |
for ( ipix=0; ipix<scan_width; ipix++ ) /* set each char */ |
for ( ipix=0; ipix<scan_width; ipix++ ) /* set each char */ |
if ( rp->pixsz == 1 ) /*' '=0 or '*'=1 to display bitmap*/ |
if ( bitmaprp->pixsz == 1 ) /*' '=0 or '*'=1 to display bitmap*/ |
scanline[ipix] = (getlongbit(rp->pixmap,lopix+ipix)==1? '*':'.'); |
scanline[ipix]=(getlongbit(bitmaprp->pixmap,lopix+ipix)==1? '*':'.'); |
else /* should have a bytemap */ |
else /* should have a bytemap */ |
if ( rp->pixsz == 8 ) /* double-check pixsz for bytemap */ |
if ( bitmaprp->pixsz == 8 ) /* double-check pixsz for bytemap */ |
{ int pixval = (int)((rp->pixmap)[lopix+ipix]), /*pixel's byte value*/ |
{ int pixval = (int)((bitmaprp->pixmap)[lopix+ipix]), /*byte value*/ |
ichar = min2(15,pixval/16); /* index for ' ', '1'...'e', '*' */ |
ichar = min2(15,pixval/16); /* index for ' ', '1'...'e', '*' */ |
scanline[ipix] = display_chars[ichar]; } /*set ' ' for 0-15, etc*/ |
scanline[ipix] = display_chars[ichar]; } /*set ' ' for 0-15, etc*/ |
/* --- display completed scan line --- */ |
/* --- display completed scan line --- */ |
Line 2640 while ( (locol=hicol+1) < rp->width ) /*
|
Line 3045 while ( (locol=hicol+1) < rp->width ) /*
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Back to caller with 1=okay, 0=failed. |
Back to caller with 1=okay, 0=failed. |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
|
if ( rp->format == 2 /* input was .gf-format */ |
|
|| rp->format == 3 ) |
|
if ( bitmaprp != NULL ) /* and we converted it for display */ |
|
delete_raster(bitmaprp); /* no longer needed, so free it */ |
return ( 1 ); |
return ( 1 ); |
} /* --- end-of-function type_raster() --- */ |
} /* --- end-of-function type_raster() --- */ |
|
|
Line 2782 return ( 1 );
|
Line 3191 return ( 1 );
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: type_pbmpgm ( rp, ptype, file ) |
|
* Purpose: Write pbm or pgm image of rp to file |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) ptr to raster struct for which |
|
* a pbm/pgm file is to be written. |
|
* ptype (I) int containing 1 for pbm, 2 for pgm, or |
|
* 0 to determine ptype from values in rp |
|
* file (I) ptr to null-terminated char string |
|
* containing name of fuke to be written |
|
* (see notes below). |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) total #bytes written, |
|
* or 0 for any error. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o (a) If file==NULL, output is written to stdout; |
|
* (b) if *file=='\000' then file is taken as the |
|
* address of an output buffer to which output |
|
* is written (and is followed by a terminating |
|
* '\0' which is not counted in #bytes returned); |
|
* (c) otherwise file is the filename (opened and |
|
* closed internally) to which output is written, |
|
* except that any final .ext extension is replaced |
|
* by .pbm or .pgm depending on ptype. |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int type_pbmpgm ( raster *rp, int ptype, char *file ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int isokay=0, nbytes=0; /* completion flag, total #bytes written */ |
|
int irow=0, jcol=0; /*height(row), width(col) indexes in raster*/ |
|
int pixmin=9999, pixmax=(-9999), /* min, max pixel value in raster */ |
|
ngray = 0; /* #gray scale values */ |
|
FILE /* *fopen(), */ *fp=NULL; /* pointer to output file (or NULL) */ |
|
char outline[1024], outfield[256], /* output line, field */ |
|
cr[16] = "\n\000"; /* cr at end-of-line */ |
|
int maxlinelen = 70; /* maximum allowed line length */ |
|
int pixfrac=6; /* use (pixmax-pixmin)/pixfrac as step */ |
|
static char |
|
*suffix[] = { NULL, ".pbm", ".pgm" }, /* file.suffix[ptype] */ |
|
*magic[] = { NULL, "P1", "P2" }, /*identifying "magic number"*/ |
|
*mode[] = { NULL, "w", "w" }; /* fopen() mode[ptype] */ |
|
/* ------------------------------------------------------------------------- |
|
check input, determine grayscale, and set up output file if necessary |
|
-------------------------------------------------------------------------- */ |
|
/* --- check input args --- */ |
|
if ( rp == NULL ) goto end_of_job; /* no input raster provided */ |
|
if ( ptype != 0 ) /* we'll determine ptype below */ |
|
if ( ptype<1 || ptype>2 ) goto end_of_job; /*invalid output graphic format*/ |
|
/* --- determine largest (and smallest) value in pixmap --- */ |
|
for ( irow=0; irow<rp->height; irow++ ) /* for each row, top-to-bottom */ |
|
for ( jcol=0; jcol<rp->width; jcol++ ) /* for each col, left-to-right */ |
|
{ int pixval = getpixel(rp,irow,jcol); /* value of pixel at irow,jcol */ |
|
pixmin = min2(pixmin,pixval); /* new minimum */ |
|
pixmax = max2(pixmax,pixval); } /* new maximum */ |
|
ngray = 1 + (pixmax-pixmin); /* should be 2 for b/w bitmap */ |
|
if ( ptype == 0 ) /* caller wants us to set ptype */ |
|
ptype = (ngray>=3?2:1); /* use grayscale if >2 shades */ |
|
/* --- open output file if necessary --- */ |
|
if ( file == NULL ) fp = stdout; /*null ptr signals output to stdout*/ |
|
else if ( *file != '\000' ) { /* explicit filename provided, so...*/ |
|
char fname[512], *pdot=NULL; /* file.ext, ptr to last . in fname*/ |
|
strncpy(fname,file,255); /* local copy of file name */ |
|
fname[255] = '\000'; /* make sure it's null terminated */ |
|
if ( (pdot=strrchr(fname,'.')) == NULL ) /*no extension on original name*/ |
|
strcat(fname,suffix[ptype]); /* so add extension */ |
|
else /* we already have an extension */ |
|
strcpy(pdot,suffix[ptype]); /* so replace original extension */ |
|
if ( (fp = fopen(fname,mode[ptype])) /* open output file */ |
|
== (FILE *)NULL ) goto end_of_job; /* quit if failed to open */ |
|
} /* --- ens-of-if(*file!='\0') --- */ |
|
/* ------------------------------------------------------------------------- |
|
format and write header |
|
-------------------------------------------------------------------------- */ |
|
/* --- format header info --- */ |
|
*outline = '\000'; /* initialize line buffer */ |
|
strcat(outline,magic[ptype]); /* begin file with "magic number" */ |
|
strcat(outline,cr); /* followed by cr to end line */ |
|
sprintf(outfield,"%d %d",rp->width,rp->height); /* format width and height */ |
|
strcat(outline,outfield); /* add width and height to header */ |
|
strcat(outline,cr); /* followed by cr to end line */ |
|
if ( ptype == 2 ) /* need max grayscale value */ |
|
{ sprintf(outfield,"%d",pixmax); /* format maximum pixel value */ |
|
strcat(outline,outfield); /* add max value to header */ |
|
strcat(outline,cr); } /* followed by cr to end line */ |
|
/* --- write header to file or memory buffer --- */ |
|
if ( fp == NULL ) /* if we have no open file... */ |
|
strcat(file,outline); /* add header to caller's buffer */ |
|
else /* or if we have an open file... */ |
|
if ( fputs(outline,fp) /* try writing header to open file */ |
|
== EOF ) goto end_of_job; /* return with error if failed */ |
|
nbytes += strlen(outline); /* bump output byte count */ |
|
/* ------------------------------------------------------------------------- |
|
format and write pixels |
|
-------------------------------------------------------------------------- */ |
|
*outline = '\000'; /* initialize line buffer */ |
|
for ( irow=0; irow<=rp->height; irow++ ) /* for each row, top-to-bottom */ |
|
for ( jcol=0; jcol<rp->width; jcol++ ) { /* for each col, left-to-right */ |
|
/* --- format value at irow,jcol--- */ |
|
*outfield = '\000'; /* init empty field */ |
|
if ( irow < rp->height ) { /* check row index */ |
|
int pixval = getpixel(rp,irow,jcol); /* value of pixel at irow,jcol */ |
|
if ( ptype == 1 ) /* pixval must be 1 or 0 */ |
|
pixval = (pixval>pixmin+((pixmax-pixmin)/pixfrac)?1:0); |
|
sprintf(outfield,"%d ",pixval); } /* format pixel value */ |
|
/* --- write line if this value won't fit on it (or last line) --- */ |
|
if ( strlen(outline)+strlen(outfield)+strlen(cr) >= maxlinelen /*won't fit*/ |
|
|| irow >= rp->height ) { /* force writing last line */ |
|
strcat(outline,cr); /* add cr to end current line */ |
|
if ( fp == NULL ) /* if we have no open file... */ |
|
strcat(file,outline); /* add header to caller's buffer */ |
|
else /* or if we have an open file... */ |
|
if ( fputs(outline,fp) /* try writing header to open file */ |
|
== EOF ) goto end_of_job; /* return with error if failed */ |
|
nbytes += strlen(outline); /* bump output byte count */ |
|
*outline = '\000'; /* re-initialize line buffer */ |
|
} /* --- end-of-if(strlen>=maxlinelen) --- */ |
|
if ( irow >= rp->height ) break; /* done after writing last line */ |
|
/* --- concatanate value to line -- */ |
|
strcat(outline,outfield); /* concatanate value to line */ |
|
} /* --- end-of-for(jcol,irow) --- */ |
|
isokay = 1; /* signal successful completion */ |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with total #bytes written, or 0=failed. |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
if ( fp != NULL /* output written to an open file */ |
|
&& fp != stdout ) /* and it's not just stdout */ |
|
fclose(fp); /* so close file before returning */ |
|
return ( (isokay?nbytes:0) ); /*back to caller with #bytes written*/ |
|
} /* --- end-of-function type_pbmpgm() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: cstruct_chardef ( cp, fp, col1 ) |
* Function: cstruct_chardef ( cp, fp, col1 ) |
* Purpose: Emit a C struct of cp on fp, starting in col1. |
* Purpose: Emit a C struct of cp on fp, starting in col1. |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 2813 emit charnum, location, name / hirow
|
Line 3357 emit charnum, location, name / hirow
|
sprintf(field,"{ %3d,%5d,\n", cp->charnum,cp->location); /*char#,location*/ |
sprintf(field,"{ %3d,%5d,\n", cp->charnum,cp->location); /*char#,location*/ |
emit_string ( fp, col1, field, "character number, location"); |
emit_string ( fp, col1, field, "character number, location"); |
/* --- toprow, topleftcol, botrow, botleftcol --- */ |
/* --- toprow, topleftcol, botrow, botleftcol --- */ |
sprintf(field," %3d,%2d, %3d,%2d,\n", /* format... */ |
sprintf(field," %3d,%2d, %3d,%2d,\n", /* format... */ |
cp->toprow,cp->topleftcol, /* toprow, topleftcol, */ |
cp->toprow,cp->topleftcol, /* toprow, topleftcol, */ |
cp->botrow,cp->botleftcol); /* and botrow, botleftcol */ |
cp->botrow,cp->botleftcol); /* and botrow, botleftcol */ |
emit_string ( fp, col1, field, "topleft row,col, and botleft row,col"); |
emit_string ( fp, col1, field, "topleft row,col, and botleft row,col"); |
Line 2855 int emit_string(); /* emit a string and
|
Line 3399 int emit_string(); /* emit a string and
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
emit width and height |
emit width and height |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
sprintf(field,"{ %2d, %3d,%2d, %s\n", /* format width,height,pixsz */ |
sprintf(field,"{ %2d, %3d,%2d,%2d, %s\n", /* format width,height,pixsz */ |
rp->width,rp->height,rp->pixsz,typecast); |
rp->width,rp->height,rp->format,rp->pixsz,typecast); |
emit_string ( fp, col1, field, "widthxheight, pixsz,map..."); |
emit_string ( fp, col1, field, "width,ht, fmt,pixsz,map..."); |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
emit bitmap and closing brace, and return to caller |
emit bitmap and closing brace, and return to caller |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 2894 int hex_bitmap ( raster *rp, FILE *fp, i
|
Line 3438 int hex_bitmap ( raster *rp, FILE *fp, i
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
int ibyte, nbytes=pixmapsz(rp); /* #bytes in raster */ |
int ibyte, /* pixmap[ibyte] index */ |
|
nbytes = pixbytes(rp); /*#bytes in bitmap or .gf-formatted*/ |
char stub[64]=" ";/* col1 leading blanks */ |
char stub[64]=" ";/* col1 leading blanks */ |
int linewidth = 64, /* (roughly) rightmost column */ |
int linewidth = 64, /* (roughly) rightmost column */ |
colwidth = (isstr? 4:5); /* #cols required for each byte */ |
colwidth = (isstr? 4:5); /* #cols required for each byte */ |
Line 2921 for ( ibyte=0; ibyte<nbytes; ibyte++ ) /
|
Line 3466 for ( ibyte=0; ibyte<nbytes; ibyte++ ) /
|
if ( ibyte < nbytes-1) /* not the last byte yet */ |
if ( ibyte < nbytes-1) /* not the last byte yet */ |
{ |
{ |
if ( !isstr ) fprintf(fp,","); /* follow hex number with comma */ |
if ( !isstr ) fprintf(fp,","); /* follow hex number with comma */ |
if ( (ibyte+1)%ncols==0 ) /* need new line after every ncols */ |
if ( (ibyte+1)%ncols==0 ) { /* need new line after every ncols */ |
if ( !isstr ) /* for hex numbers format ... */ |
if ( !isstr ) /* for hex numbers format ... */ |
fprintf(fp,"\n%.*s",col1,stub); /* ...just need newline and stub */ |
fprintf(fp,"\n%.*s",col1,stub); /* ...just need newline and stub */ |
else /* for string format... */ |
else /* for string format... */ |
fprintf(fp,"\"\n%.*s\"",col1,stub); /* ...need closing, opening "s */ |
fprintf(fp,"\"\n%.*s\"",col1,stub); } /*...need closing, opening "s*/ |
} /* --- end-of-if(ibyte<nbytes-1) --- */ |
} /* --- end-of-if(ibyte<nbytes-1) --- */ |
} /* --- end-of-for(ibyte) --- */ |
} /* --- end-of-for(ibyte) --- */ |
if ( isstr ) fprintf(fp,"\""); /* closing " after last line */ |
if ( isstr ) fprintf(fp,"\""); /* closing " after last line */ |
Line 3000 return ( 1 );
|
Line 3545 return ( 1 );
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: gftobitmap ( gf ) |
|
* Purpose: convert .gf-like pixmap to bitmap image |
|
* -------------------------------------------------------------------------- |
|
* Arguments: gf (I) raster * to struct in .gf-format |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( raster * ) image-format raster * if successful, |
|
* or NULL for any error. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
raster *gftobitmap ( raster *gf ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
raster *new_raster(), *rp=NULL; /* image raster retuned to caller */ |
|
int width=0, height=0, totbits=0; /* gf->width, gf->height, #bits */ |
|
int format=0, icount=0, ncounts=0, /*.gf format, count index, #counts*/ |
|
ibit=0, bitval=0; /* bitmap index, bit value */ |
|
int isrepeat = 1, /* true to process repeat counts */ |
|
repeatcmds[2] = {255,15}, /*opcode for repeat/duplicate count*/ |
|
nrepeats=0, irepeat=0, /* scan line repeat count,index */ |
|
wbits = 0; /* count bits to width of scan line*/ |
|
/* ------------------------------------------------------------------------- |
|
initialization |
|
-------------------------------------------------------------------------- */ |
|
/* --- check args --- */ |
|
if ( gf == NULL ) goto end_of_job; /* input raster not provided */ |
|
format = gf->format; /* 2 or 3 */ |
|
if ( format!=2 && format!=3 ) goto end_of_job; /* invalid raster format */ |
|
ncounts = gf->pixsz; /*pixsz is really #counts in pixmap*/ |
|
/* --- allocate output raster with proper dimensions for bitmap --- */ |
|
width=gf->width; height=gf->height; /* dimensions of raster */ |
|
if ( (rp = new_raster(width,height,1)) /* allocate new raster and bitmap */ |
|
== NULL ) goto end_of_job; /* quit if failed to allocate */ |
|
totbits = width*height; /* total #bits in image */ |
|
/* ------------------------------------------------------------------------- |
|
fill bitmap |
|
-------------------------------------------------------------------------- */ |
|
for ( icount=0,bitval=0; icount<ncounts; icount++ ) |
|
{ |
|
int nbits = (int)(getbyfmt(format,gf->pixmap,icount)); /*#bits to set*/ |
|
if ( isrepeat /* we're proxessing repeat counts */ |
|
&& nbits == repeatcmds[format-2] ) { /* and repeat opcode found */ |
|
if ( nrepeats == 0 ) /* recursive repeat is error */ |
|
{ nrepeats = (int)(getbyfmt(format,gf->pixmap,icount+1));/*repeat count*/ |
|
nbits = (int)(getbyfmt(format,gf->pixmap,icount+2)); /*#bits to set*/ |
|
icount += 2; } /* bump byte/nibble count */ |
|
else /* some internal error occurred */ |
|
if ( msgfp!=NULL && msglevel>=1 ) /* report error */ |
|
fprintf(msgfp,"gftobitmap> found embedded repeat command\n"); } |
|
if ( 0 ) |
|
fprintf(stdout, |
|
"gftobitmap> icount=%d bitval=%d nbits=%d ibit=%d totbits=%d\n", |
|
icount,bitval,nbits,ibit,totbits); |
|
for ( ; nbits>0; nbits-- ) /* count down */ |
|
{ if ( ibit >= totbits ) goto end_of_job; /* overflow check */ |
|
for ( irepeat=0; irepeat<=nrepeats; irepeat++ ) |
|
if ( bitval == 1 ) /* set pixel */ |
|
{ setlongbit(rp->pixmap,(ibit+irepeat*width)); } |
|
else /* clear pixel */ |
|
{ unsetlongbit(rp->pixmap,(ibit+irepeat*width)); } |
|
if ( nrepeats > 0 ) wbits++; /* count another repeated bit */ |
|
ibit++; } /* bump bit index */ |
|
bitval = 1-bitval; /* flip bit value */ |
|
if ( wbits >= width ) { /* completed repeats */ |
|
ibit += nrepeats*width; /*bump bit count past repeated scans*/ |
|
if ( wbits > width ) /* out-of alignment error */ |
|
if ( msgfp!=NULL && msglevel>=1 ) /* report error */ |
|
fprintf(msgfp,"gftobitmap> width=%d wbits=%d\n",width,wbits); |
|
wbits = nrepeats = 0; } /* reset repeat counts */ |
|
} /* --- end-of-for(icount) --- */ |
|
end_of_job: |
|
return ( rp ); /* back to caller with image */ |
|
} /* --- end-of-function gftobitmap() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: get_symdef ( symbol ) |
* Function: get_symdef ( symbol ) |
* Purpose: returns mathchardef struct for symbol |
* Purpose: returns mathchardef struct for symbol |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 3024 mathchardef *get_symdef ( char *symbol )
|
Line 3648 mathchardef *get_symdef ( char *symbol )
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
mathchardef *symdefs = symtable; /* table of mathchardefs */ |
mathchardef *symdefs = symtable; /* table of mathchardefs */ |
|
int ligdef=0, get_ligature(); /* or we may have a ligature */ |
int idef = 0, /* symdefs[] index */ |
int idef = 0, /* symdefs[] index */ |
bestdef = (-9999); /*index of shortest matching symdef*/ |
bestdef = (-9999); /*index of shortest matching symdef*/ |
int symlen = strlen(symbol), /* length of input symbol */ |
int symlen = strlen(symbol), /* length of input symbol */ |
deflen, minlen=9999; /*length of shortest matching symdef*/ |
deflen, minlen=9999; /*length of shortest matching symdef*/ |
int /*alnumsym = (symlen==1 && isalnum(*symbol)),*/ /*alphanumeric sym*/ |
int /*alnumsym = (symlen==1 && isalnum(*symbol)),*/ /*alphanumeric sym*/ |
alphasym = (symlen==1 && isalpha(*symbol)); /* or alpha symbol */ |
alphasym = (symlen==1 && isalpha(*symbol)); /* or alpha symbol */ |
|
int family = fontinfo[fontnum].family; /* current font family */ |
static char *displaysyms[][2] = { /*xlate to Big sym for \displaystyle*/ |
static char *displaysyms[][2] = { /*xlate to Big sym for \displaystyle*/ |
|
/* --- see table on page 536 in TLC2 --- */ |
{"\\int", "\\Bigint"}, |
{"\\int", "\\Bigint"}, |
{"\\oint", "\\Bigoint"}, |
{"\\oint", "\\Bigoint"}, |
{"\\sum", "\\Bigsum"}, |
{"\\sum", "\\Bigsum"}, |
{"\\prod", "\\Bigprod"}, |
{"\\prod", "\\Bigprod"}, |
{"\\coprod", "\\Bigcoprod"}, |
{"\\coprod", "\\Bigcoprod"}, |
{"\\cup", "\\Bigcup"}, |
/* --- must be 'big' when related to similar binary operators --- */ |
{"\\sqcup", "\\Bigsqcup"}, |
{"\\bigcup", "\\Bigcup"}, |
{"\\cap", "\\Bigcap"}, |
{"\\bigsqcup", "\\Bigsqcup"}, |
{"\\sqcap", "\\sqcap"}, /* don't have \Bigsqcap */ |
{"\\bigcap", "\\Bigcap"}, |
{"\\odot", "\\Bigodot"}, |
/*{"\\bigsqcap", "\\sqcap"},*/ /* don't have \Bigsqcap */ |
{"\\oplus", "\\Bigoplus"}, |
{"\\bigodot", "\\Bigodot"}, |
{"\\otimes", "\\Bigotimes"}, |
{"\\bigoplus", "\\Bigoplus"}, |
{"\\uplus", "\\Biguplus"}, |
{"\\bigominus", "\\ominus"}, |
{"\\wedge", "\\Bigwedge"}, |
{"\\bigotimes", "\\Bigotimes"}, |
{"\\vee", "\\Bigvee"}, |
{"\\bigoslash", "\\oslash"}, |
|
{"\\biguplus", "\\Biguplus"}, |
|
{"\\bigwedge", "\\Bigwedge"}, |
|
{"\\bigvee", "\\Bigvee"}, |
{NULL, NULL} }; |
{NULL, NULL} }; |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
|
First check for ligature |
|
-------------------------------------------------------------------------- */ |
|
isligature = 0; /* init signal for no ligature */ |
|
if ( family == CYR10 ) /*only check for cyrillic ligatures*/ |
|
if ( (ligdef=get_ligature(subexprptr,family)) /* check for ligature */ |
|
>= 0 ) /* found a ligature */ |
|
{ bestdef = ligdef; /* set bestdef for ligature */ |
|
isligature = 1; /* signal we found a ligature */ |
|
goto end_of_job; } /* so just give it to caller */ |
|
/* ------------------------------------------------------------------------- |
If in \displaystyle mode, first xlate int to Bigint, etc. |
If in \displaystyle mode, first xlate int to Bigint, etc. |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( isdisplaystyle > 1 ) /* we're in \displaystyle mode */ |
if ( isdisplaystyle > 1 ) /* we're in \displaystyle mode */ |
Line 3070 for ( idef=0; ;idef++ ) /* until trail
|
Line 3710 for ( idef=0; ;idef++ ) /* until trail
|
if ( symdefs[idef].symbol == NULL ) break; /* reached end-of-table */ |
if ( symdefs[idef].symbol == NULL ) break; /* reached end-of-table */ |
else /* check against caller's symbol */ |
else /* check against caller's symbol */ |
if ( strncmp(symbol,symdefs[idef].symbol,symlen) == 0 ) /* found match */ |
if ( strncmp(symbol,symdefs[idef].symbol,symlen) == 0 ) /* found match */ |
if ( symdefs[idef].handler != NULL /* mode irrelevant for directives */ |
if ( (fontnum==0||family==CYR10) /* mathmode, so check every match */ |
|| istext==0 /* mathmode, so use first match */ |
|| (0 && istextmode && (!alphasym /* text mode and not alpha symbol */ |
|| (istext==1 && symdefs[idef].family==CMR10) /*textmode && rm text*/ |
|| symdefs[idef].handler!=NULL)) /* or text mode and directive */ |
|| (istext==2 && symdefs[idef].family==CMMI10) /*textmode && it text*/ |
|| (symdefs[idef].family==family /* have correct family */ |
|| (istext==3 && symdefs[idef].family==BBOLD10) /*textmode && bb text*/ |
&& symdefs[idef].handler==NULL) ) /* and not a handler collision */ |
|| (istext!=3 && !alphasym) ) /* not bb and not alpha */ |
#if 0 |
|
|| (fontnum==1 && symdefs[idef].family==CMR10) /*textmode && rm text*/ |
|
|| (fontnum==2 && symdefs[idef].family==CMMI10) /*textmode && it text*/ |
|
|| (fontnum==3 && symdefs[idef].family==BBOLD10 /*textmode && bb text*/ |
|
&& symdefs[idef].handler==NULL) |
|
|| (fontnum==4 && symdefs[idef].family==CMMIB10 /*textmode && bf text*/ |
|
&& symdefs[idef].handler==NULL) ) |
|
#endif |
if ( (deflen=strlen(symdefs[idef].symbol)) < minlen ) /*new best match*/ |
if ( (deflen=strlen(symdefs[idef].symbol)) < minlen ) /*new best match*/ |
{ bestdef = idef; /* save index of new best match */ |
{ bestdef = idef; /* save index of new best match */ |
if ( (minlen = deflen) /* and save its len for next test */ |
if ( (minlen = deflen) /* and save its len for next test */ |
== symlen ) break; } /*perfect match, so return with it*/ |
== symlen ) break; } /*perfect match, so return with it*/ |
if ( bestdef < 0 ) /* failed to look up symbol */ |
if ( bestdef < 0 ) /* failed to look up symbol */ |
if ( istext != 0 ) /* we're in a restricted font mode */ |
if ( fontnum != 0 ) /* we're in a restricted font mode */ |
{ int wastext = istext; /* save current mode */ |
{ int oldfontnum = fontnum; /* save current font family */ |
mathchardef *symdef = NULL; /* lookup result with istext=0 */ |
mathchardef *symdef = NULL; /* lookup result with fontnum=0 */ |
istext = 0; /*try to look up symbol in any font*/ |
fontnum = 0; /*try to look up symbol in any font*/ |
symdef = get_symdef(symbol); /* repeat lookup with istext=0 */ |
symdef = get_symdef(symbol); /* repeat lookup with fontnum=0 */ |
istext = wastext; /* reset font mode */ |
fontnum = oldfontnum; /* reset font family */ |
return symdef; } /* caller gets istext=0 lookup */ |
return symdef; } /* caller gets fontnum=0 lookup */ |
if ( msgfp!=NULL && msglevel>=999 ) /* debugging output */ |
end_of_job: |
{ fprintf(msgfp,"get_symdefs> symbol=%s matches symtable[%d]=%s\n", |
if ( msgfp!=NULL && msglevel>=999 ) /* debugging output */ |
symbol,bestdef,(bestdef<0?"NotFound":symdefs[bestdef].symbol)); |
{ fprintf(msgfp, |
|
"get_symdef> symbol=%s matches symtable[%d]=%s (isligature=%d)\n", |
|
symbol,bestdef,(bestdef<0?"NotFound":symdefs[bestdef].symbol),isligature); |
fflush(msgfp); } |
fflush(msgfp); } |
return ( (bestdef<0? NULL : &(symdefs[bestdef])) ); /*NULL or best symdef[]*/ |
return ( (bestdef<0? NULL : &(symdefs[bestdef])) );/*NULL or best symdef[]*/ |
} /* --- end-of-function get_symdef() --- */ |
} /* --- end-of-function get_symdef() --- */ |
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: get_ligature ( expression, family ) |
|
* Purpose: returns symtable[] index for ligature |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I) char * containing ligature |
|
* whose corresponding mathchardef is wanted |
|
* family (I) int containing NOVALUE for any family, |
|
* or, e.g., CYR10 for cyrillic, etc. |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) symtable[] index defining ligature, |
|
* or -9999 if no ligature found or for any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int get_ligature ( char *expression, int family ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
mathchardef *symdefs = symtable; /* table of mathchardefs */ |
|
char *ligature = expression /*- 1*/, /* expression ptr */ |
|
*symbol = NULL; /* symdefs[idef].symbol */ |
|
int liglen = strlen(ligature); /* #chars remaining in expression */ |
|
int iscyrfam = (family==CYR10); /* true for cyrillic families */ |
|
int idef = 0, /* symdefs[] index */ |
|
bestdef = (-9999), /*index of longest matching symdef*/ |
|
maxlen=(-9999); /*length of longest matching symdef*/ |
|
/* ------------------------------------------------------------------------- |
|
search symdefs[] in order for first occurrence of symbol |
|
-------------------------------------------------------------------------- */ |
|
if ( !isstring ) { /* no ligatures in "string" mode */ |
|
for ( idef=0; ;idef++ ) /* until trailer record found */ |
|
if ( (symbol=symdefs[idef].symbol) == NULL ) break; /* end-of-table */ |
|
else { /* check against caller's ligature */ |
|
int symlen = strlen(symbol); /* #chars in symbol */ |
|
if ( ( symlen>1 || iscyrfam ) /*ligature >1 char long or cyrillic*/ |
|
&& symlen <= liglen /* and enough remaining chars */ |
|
&& ( *symbol!='\\' || iscyrfam ) /* not escaped or cyrillic */ |
|
&& symdefs[idef].handler == NULL ) /* and not a handler */ |
|
if ( strncmp(ligature,symbol,symlen) == 0 ) /* found match */ |
|
if ( family < 0 /* no family specifies */ |
|
|| symdefs[idef].family == family ) /* or have correct family */ |
|
if ( symlen > maxlen ) /* new longest ligature */ |
|
{ bestdef = idef; /* save index of new best match */ |
|
maxlen = symlen; } /* and save its len for next test */ |
|
} /* --- end-of-if/else(symbol==NULL) --- */ |
|
if ( msgfp!=NULL && msglevel>=999 ) /* debugging output */ |
|
{ fprintf(msgfp,"get_ligature> ligature=%.4s matches symtable[%d]=%s\n", |
|
ligature,bestdef,(bestdef<0?"NotFound":symdefs[bestdef].symbol)); |
|
fflush(msgfp); } |
|
} /* --- end-of-if(!isstring) --- */ |
|
return ( bestdef ); /* -9999 or index of best symdef[] */ |
|
} /* --- end-of-function get_ligature --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: get_chardef ( symdef, size ) |
* Function: get_chardef ( symdef, size ) |
* Purpose: returns chardef ptr containing data for symdef at given size |
* Purpose: returns chardef ptr containing data for symdef at given size |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Arguments: symdef (I) mathchardef * corresponding to symbol |
* Arguments: symdef (I) mathchardef * corresponding to symbol |
* whose corresponding chardef is wanted |
* whose corresponding chardef is wanted |
* size (I) int containing 0-4 for desired size |
* size (I) int containing 0-5 for desired size |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Returns: ( chardef * ) pointer to struct defining symbol at size, |
* Returns: ( chardef * ) pointer to struct defining symbol at size, |
* or NULL for any error |
* or NULL for any error |
Line 3129 char *symptr = NULL; /* look for 1st a
|
Line 3834 char *symptr = NULL; /* look for 1st a
|
initialization |
initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- check symdef --- */ |
/* --- check symdef --- */ |
if ( symdef == NULL ) return ( NULL ); /* get_symdef() probably failed */ |
if ( symdef == NULL ) goto end_of_job; /* get_symdef() probably failed */ |
/* --- get local copy of indexes from symdef --- */ |
/* --- get local copy of indexes from symdef --- */ |
family = symdef->family; /* font family containing symbol */ |
family = symdef->family; /* font family containing symbol */ |
charnum = symdef->charnum; /* char# of symbol within font */ |
charnum = symdef->charnum; /* char# of symbol within font */ |
Line 3161 find font family in table of fonts[]
|
Line 3866 find font family in table of fonts[]
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- look up font family --- */ |
/* --- look up font family --- */ |
for ( ifont=0; ;ifont++ ) /* until trailer record found */ |
for ( ifont=0; ;ifont++ ) /* until trailer record found */ |
if ( fonts[ifont].family < 0 ) return ( NULL ); /* error, no such family */ |
if ( fonts[ifont].family < 0 ) { /* error, no such family */ |
|
if ( msgfp!=NULL && msglevel>=99 ) { /* emit error */ |
|
fprintf(msgfp,"get_chardef> failed to find font family %d\n", |
|
family); fflush(msgfp); } |
|
goto end_of_job; } /* quit if can't find font family*/ |
else if ( fonts[ifont].family == family ) break; /* found font family */ |
else if ( fonts[ifont].family == family ) break; /* found font family */ |
/* --- get local copy of table for this family by size --- */ |
/* --- get local copy of table for this family by size --- */ |
fontdef = fonts[ifont].fontdef; /* font by size */ |
fontdef = fonts[ifont].fontdef; /* font by size */ |
Line 3173 while ( 1 ) /* find size or closest a
|
Line 3882 while ( 1 ) /* find size or closest a
|
if ( fontdef[size] != NULL ) break; /* found available size */ |
if ( fontdef[size] != NULL ) break; /* found available size */ |
else /* adjust size closer to normal */ |
else /* adjust size closer to normal */ |
if ( size == NORMALSIZE /* already normal so no more sizes,*/ |
if ( size == NORMALSIZE /* already normal so no more sizes,*/ |
|| sizeinc == 0 ) return ( NULL); /* or must be supersampling */ |
|| sizeinc == 0 ) { /* or must be supersampling */ |
|
if ( msgfp!=NULL && msglevel>=99 ) { /* emit error */ |
|
fprintf(msgfp,"get_chardef> failed to find font size %d\n", |
|
size); fflush(msgfp); } |
|
goto end_of_job; } /* quit if can't find desired size */ |
else /*bump size 1 closer to NORMALSIZE*/ |
else /*bump size 1 closer to NORMALSIZE*/ |
size += sizeinc; /* see if adjusted size available */ |
size += sizeinc; /* see if adjusted size available */ |
/* --- ptr to chardef struct --- */ |
/* --- ptr to chardef struct --- */ |
Line 3188 if ( family == CMEX10 ) /* cmex10 need
|
Line 3901 if ( family == CMEX10 ) /* cmex10 need
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
return subraster containing chardef data for symbol in requested size |
return subraster containing chardef data for symbol in requested size |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
return ( gfdata ); /*ptr to chardef for symbol in size*/ |
end_of_job: |
|
if ( msgfp!=NULL && msglevel>=999 ) |
|
{ if (symdef == NULL) fprintf(msgfp,"get_chardef> input symdef==NULL\n"); |
|
else |
|
fprintf(msgfp,"get_chardef> requested symbol=\"%s\" size=%d %s\n", |
|
symdef->symbol,size,(gfdata==NULL?"FAILED":"Succeeded")); |
|
fflush(msgfp); } |
|
return ( gfdata ); /*ptr to chardef for symbol in size*/ |
} /* --- end-of-function get_chardef() --- */ |
} /* --- end-of-function get_chardef() --- */ |
|
|
|
|
Line 3197 return ( gfdata ); /*ptr to chardef fo
|
Line 3917 return ( gfdata ); /*ptr to chardef fo
|
* Purpose: returns new subraster ptr containing |
* Purpose: returns new subraster ptr containing |
* data for symdef at given size |
* data for symdef at given size |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Arguments: symdef (I) mathchardef * corresponding to symbol |
* Arguments: symdef (I) mathchardef * corresponding to symbol whose |
* whose corresponding chardef is wanted |
* corresponding chardef subraster is wanted |
* size (I) int containing 0-4 for desired size |
* size (I) int containing 0-5 for desired size |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Returns: ( subraster * ) pointer to struct defining symbol at size, |
* Returns: ( subraster * ) pointer to struct defining symbol at size, |
* or NULL for any error |
* or NULL for any error |
Line 3215 Allocations and Declarations
|
Line 3935 Allocations and Declarations
|
chardef *get_chardef(), *gfdata=NULL; /* chardef struct for symdef,size */ |
chardef *get_chardef(), *gfdata=NULL; /* chardef struct for symdef,size */ |
int get_baseline(); /* baseline of gfdata */ |
int get_baseline(); /* baseline of gfdata */ |
subraster *new_subraster(), *sp=NULL; /* subraster containing gfdata */ |
subraster *new_subraster(), *sp=NULL; /* subraster containing gfdata */ |
|
raster *bitmaprp=NULL, *gftobitmap(); /* convert .gf-format to bitmap */ |
|
int delete_subraster(); /* in case gftobitmap() fails */ |
int aasupsamp(), /*antialias char with supersampling*/ |
int aasupsamp(), /*antialias char with supersampling*/ |
grayscale=256; /* aasupersamp() parameters */ |
grayscale=256; /* aasupersamp() parameters */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 3225 if ( (gfdata=get_chardef(symdef,size)) /
|
Line 3947 if ( (gfdata=get_chardef(symdef,size)) /
|
if ( (sp=new_subraster(0,0,0)) /* allocate subraster "envelope" */ |
if ( (sp=new_subraster(0,0,0)) /* allocate subraster "envelope" */ |
!= NULL ) /* and check that we succeeded */ |
!= NULL ) /* and check that we succeeded */ |
{ |
{ |
sp->type = CHARASTER; /* static character raster */ |
raster *image = &(gfdata->image); /* ptr to chardef's bitmap or .gf */ |
|
int format = image->format; /* 1=bitmap, else .gf */ |
sp->symdef = symdef; /* replace NULL with caller's arg */ |
sp->symdef = symdef; /* replace NULL with caller's arg */ |
sp->size = size; /*replace default with caller's size*/ |
sp->size = size; /*replace default with caller's size*/ |
sp->baseline = get_baseline(gfdata); /* get baseline of character */ |
sp->baseline = get_baseline(gfdata); /* get baseline of character */ |
sp->image = &(gfdata->image); /* store ptr to its bitmap */ |
if ( format == 1 ) /* already a bitmap */ |
|
{ sp->type = CHARASTER; /* static char raster */ |
|
sp->image = image; } /* store ptr to its bitmap */ |
|
else /* need to convert .gf-to-bitmap */ |
|
if ( (bitmaprp = gftobitmap(image)) /* convert */ |
|
!= (raster *)NULL ) /* successful */ |
|
{ sp->type = IMAGERASTER; /* allocated raster will be freed */ |
|
sp->image = bitmaprp; } /* store ptr to converted bitmap */ |
|
else /* conversion failed */ |
|
{ delete_subraster(sp); /* free unneeded subraster */ |
|
sp = (subraster *)NULL; /* signal error to caller */ |
|
goto end_of_job; } /* quit */ |
if ( issupersampling ) /* antialias character right here */ |
if ( issupersampling ) /* antialias character right here */ |
{ |
{ |
raster *aa = NULL; /* antialiased char raster */ |
raster *aa = NULL; /* antialiased char raster */ |
Line 3245 if ( (gfdata=get_chardef(symdef,size)) /
|
Line 3979 if ( (gfdata=get_chardef(symdef,size)) /
|
sp->type = IMAGERASTER; } /* character is an image raster */ |
sp->type = IMAGERASTER; } /* character is an image raster */ |
} /* --- end-of-if(issupersampling) --- */ |
} /* --- end-of-if(issupersampling) --- */ |
} /* --- end-of-if(sp!=NULL) --- */ |
} /* --- end-of-if(sp!=NULL) --- */ |
if ( msgfp!=NULL && msglevel>=999 ) |
end_of_job: |
{ fprintf(msgfp,"get_charsubraster> requested symbol=\"%s\" baseline=%d\n", |
if ( msgfp!=NULL && msglevel>=999 ) |
symdef->symbol, (sp==NULL?0:sp->baseline)); fflush(msgfp); } |
{ fprintf(msgfp,"get_charsubraster> requested symbol=\"%s\" baseline=%d" |
|
" %s %s\n", symdef->symbol, (sp==NULL?0:sp->baseline), |
|
(sp==NULL?"FAILED":"Succeeded"), (gfdata==NULL?"(gfdata=NULL)":" ")); |
|
fflush(msgfp); } |
return ( sp ); /* back to caller */ |
return ( sp ); /* back to caller */ |
} /* --- end-of-function get_charsubraster() --- */ |
} /* --- end-of-function get_charsubraster() --- */ |
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: get_symsubraster ( symbol, size ) |
|
* Purpose: returns new subraster ptr containing |
|
* data for symbol at given size |
|
* -------------------------------------------------------------------------- |
|
* Arguments: symbol (I) char * corresponding to symbol |
|
* whose corresponding subraster is wanted |
|
* size (I) int containing 0-5 for desired size |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( subraster * ) pointer to struct defining symbol at size, |
|
* or NULL for any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o just combines get_symdef() and get_charsubraster() |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
subraster *get_symsubraster ( char *symbol, int size ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
subraster *sp=NULL, *get_charsubraster(); /* subraster containing gfdata */ |
|
mathchardef *symdef=NULL, *get_symdef(); /* mathchardef lookup for symbol */ |
|
/* ------------------------------------------------------------------------- |
|
look up mathchardef for symbol |
|
-------------------------------------------------------------------------- */ |
|
if ( symbol != NULL ) /* user supplied input symbol */ |
|
symdef = get_symdef(symbol); /*look up corresponding mathchardef*/ |
|
/* ------------------------------------------------------------------------- |
|
look up chardef for mathchardef and wrap a subraster structure around data |
|
-------------------------------------------------------------------------- */ |
|
if ( symdef != NULL ) /* lookup succeeded */ |
|
sp = get_charsubraster(symdef,size); /* so get symbol data in subraster */ |
|
return ( sp ); /* back to caller with sp or NULL */ |
|
} /* --- end-of-function get_symsubraster() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: get_baseline ( gfdata ) |
* Function: get_baseline ( gfdata ) |
* Purpose: returns baseline for a chardef struct |
* Purpose: returns baseline for a chardef struct |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 3331 int defheight, bestheight=9999, /* heigh
|
Line 4104 int defheight, bestheight=9999, /* heigh
|
int iswidth = 0; /* true if best-fit width desired */ |
int iswidth = 0; /* true if best-fit width desired */ |
int isunesc = 0, /* true if leading escape removed */ |
int isunesc = 0, /* true if leading escape removed */ |
issq=0, isoint=0; /* true for \sqcup,etc, \oint,etc */ |
issq=0, isoint=0; /* true for \sqcup,etc, \oint,etc */ |
|
int iscurly = 0; /* true for StMary's curly symbols */ |
char *bigint="bigint", *bigoint="bigoint"; /* substitutes for int, oint */ |
char *bigint="bigint", *bigoint="bigoint"; /* substitutes for int, oint */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
determine if searching height or width, and search symdefs[] for best-fit |
determine if searching height or width, and search symdefs[] for best-fit |
Line 3338 determine if searching height or width,
|
Line 4112 determine if searching height or width,
|
/* --- arg checks --- */ |
/* --- arg checks --- */ |
if ( symlen < 1 ) return (sp); /* no input symbol suplied */ |
if ( symlen < 1 ) return (sp); /* no input symbol suplied */ |
if ( strcmp(symbol,"e") == 0 ) return(sp); /* e causes segfault??? */ |
if ( strcmp(symbol,"e") == 0 ) return(sp); /* e causes segfault??? */ |
|
if ( strstr(symbol,"curly") != NULL ) iscurly=1; /* user wants curly delim */ |
/* --- ignore leading escapes for CMEX10 --- */ |
/* --- ignore leading escapes for CMEX10 --- */ |
if ( 1 ) /* ignore leading escape */ |
if ( 1 ) /* ignore leading escape */ |
if ( (family==CMEX10 || family==CMSYEX) ) { /* for CMEX10 or CMSYEX */ |
if ( (family==CMEX10 || family==CMSYEX) ) { /* for CMEX10 or CMSYEX */ |
Line 3367 for ( idef=0; ;idef++ ) /* until trail
|
Line 4142 for ( idef=0; ;idef++ ) /* until trail
|
if ( defsym == NULL ) break; /* reached end-of-table */ |
if ( defsym == NULL ) break; /* reached end-of-table */ |
else /* check against caller's symbol */ |
else /* check against caller's symbol */ |
if ( family<0 || deffam == family /* if explicitly in caller's family*/ |
if ( family<0 || deffam == family /* if explicitly in caller's family*/ |
|| (family==CMSYEX && (deffam==CMSY10||deffam==CMEX10)) ) |
|| (family==CMSYEX && (deffam==CMSY10||deffam==CMEX10||deffam==STMARY10)) ) |
{ |
{ |
strcpy(lcsymbol,defsym); /* local copy of symdefs[] symbol */ |
strcpy(lcsymbol,defsym); /* local copy of symdefs[] symbol */ |
if ( isunesc && *lcsymbol=='\\' ) /* ignored leading \ in symbol */ |
if ( isunesc && *lcsymbol=='\\' ) /* ignored leading \ in symbol */ |
Line 3379 for ( idef=0; ;idef++ ) /* until trail
|
Line 4154 for ( idef=0; ;idef++ ) /* until trail
|
if ((symptr=strstr(lcsymbol,unescsymbol)) != NULL) /*found caller's sym*/ |
if ((symptr=strstr(lcsymbol,unescsymbol)) != NULL) /*found caller's sym*/ |
if ( (isoint || strstr(lcsymbol,"oint")==NULL) /* skip unwanted "oint"*/ |
if ( (isoint || strstr(lcsymbol,"oint")==NULL) /* skip unwanted "oint"*/ |
&& (issq || strstr(lcsymbol,"sq")==NULL) ) /* skip unwanted "sq" */ |
&& (issq || strstr(lcsymbol,"sq")==NULL) ) /* skip unwanted "sq" */ |
if ( (deffam == CMSY10 ? /* CMSY10 or not CMSY10 */ |
if ( ( deffam == CMSY10 ? /* CMSY10 or not CMSY10 */ |
symptr == lcsymbol /* caller's sym is a prefix */ |
symptr == lcsymbol /* caller's sym is a prefix */ |
&& deflen == symlen: /* and same length */ |
&& deflen == symlen: /* and same length */ |
symptr == lcsymbol /* caller's sym is a prefix */ |
(iscurly || strstr(lcsymbol,"curly")==NULL) &&/*not unwanted curly*/ |
|| symptr == lcsymbol+deflen-symlen) ) /* or a suffix */ |
(symptr == lcsymbol /* caller's sym is a prefix */ |
|
|| symptr == lcsymbol+deflen-symlen) ) ) /* or a suffix */ |
for ( size=0; size<=LARGESTSIZE; size++ ) /* check all font sizes */ |
for ( size=0; size<=LARGESTSIZE; size++ ) /* check all font sizes */ |
if ( (gfdata=get_chardef(&(symdefs[idef]),size)) != NULL ) /*got one*/ |
if ( (gfdata=get_chardef(&(symdefs[idef]),size)) != NULL ) /*got one*/ |
{ defheight = gfdata->image.height; /* height of this character */ |
{ defheight = gfdata->image.height; /* height of this character */ |
Line 3404 construct subraster for best fit charact
|
Line 4180 construct subraster for best fit charact
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( bestdef >= 0 ) /* found a best fit for caller */ |
if ( bestdef >= 0 ) /* found a best fit for caller */ |
sp = get_charsubraster(&(symdefs[bestdef]),bestsize); /* best subraster */ |
sp = get_charsubraster(&(symdefs[bestdef]),bestsize); /* best subraster */ |
if ( sp==NULL && height-bigheight>5 ) /* try to construct delim */ |
if ( (sp==NULL && height-bigheight>5) /* try to construct delim */ |
|
|| bigdef < 0 ) /* delim not in font tables */ |
sp = make_delim(symbol,(iswidth?-height:height)); /* try to build delim */ |
sp = make_delim(symbol,(iswidth?-height:height)); /* try to build delim */ |
if ( sp==NULL && bigdef>=0 ) /* just give biggest to caller */ |
if ( sp==NULL && bigdef>=0 ) /* just give biggest to caller */ |
sp = get_charsubraster(&(symdefs[bigdef]),bigsize); /* biggest subraster */ |
sp = get_charsubraster(&(symdefs[bigdef]),bigsize); /* biggest subraster */ |
|
if ( msgfp!=NULL && msglevel>=99 ) |
|
fprintf(msgfp,"get_delim> symbol=%.50s, height=%d family=%d isokay=%s\n", |
|
(symbol==NULL?"null":symbol),height,family,(sp==NULL?"fail":"success")); |
return ( sp ); |
return ( sp ); |
} /* --- end-of-function get_delim() --- */ |
} /* --- end-of-function get_delim() --- */ |
|
|
Line 3436 Allocations and Declarations
|
Line 4216 Allocations and Declarations
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
subraster *sp = (subraster *)NULL, /* subraster returned to caller */ |
subraster *sp = (subraster *)NULL, /* subraster returned to caller */ |
*new_subraster(); /* allocate subraster */ |
*new_subraster(); /* allocate subraster */ |
|
subraster *get_symsubraster(), /* look up delim pieces in cmex10 */ |
|
*symtop=NULL, *symbot=NULL, *symmid=NULL, *symbar=NULL, /* pieces */ |
|
*topsym=NULL, *botsym=NULL, *midsym=NULL, *barsym=NULL, /* +filler */ |
|
*rastack(), *rastcat(); /* stack pieces, concat filler */ |
|
int isdrawparen = 0; /*1=draw paren, 0=build from pieces*/ |
raster *rasp = (raster *)NULL; /* sp->image */ |
raster *rasp = (raster *)NULL; /* sp->image */ |
int isokay=0, delete_subraster(); /* set true if delimiter drawn ok */ |
int isokay=0, delete_subraster(); /* set true if delimiter drawn ok */ |
int pixsz = 1; /* pixels are one bit each */ |
int pixsz = 1, /* pixels are one bit each */ |
|
symsize = 0; /* size arg for get_symsubraster() */ |
int thickness = 1; /* drawn lines are one pixel thick */ |
int thickness = 1; /* drawn lines are one pixel thick */ |
int aspectratio = 8; /* default height/width for parens */ |
int aspectratio = 8; /* default height/width for parens */ |
int iswidth = 0, /*true if width specified by height*/ |
int iswidth = 0, /*true if width specified by height*/ |
width = height; /* #pixels width (e.g., of ellipse)*/ |
width = height; /* #pixels width (e.g., of ellipse)*/ |
char *lp=NULL, *rp=NULL, *strchr(), /* check symbol for left or right */ |
char *lp=NULL, *rp=NULL, /* check symbol for left or right */ |
*lp2=NULL, *rp2=NULL; /* synonym for lp,rp */ |
*lp2=NULL, *rp2=NULL, /* synonym for lp,rp */ |
|
*lp3=NULL, *rp3=NULL, /* synonym for lp,rp */ |
|
*lp4=NULL, *rp4=NULL; /* synonym for lp,rp */ |
int circle_raster(), /* ellipse for ()'s in sp->image */ |
int circle_raster(), /* ellipse for ()'s in sp->image */ |
rule_rsater(), /* horizontal or vertical lines */ |
rule_rsater(), /* horizontal or vertical lines */ |
line_raster(); /* line between two points */ |
line_raster(); /* line between two points */ |
|
subraster *uparrow_subraster(); /* up/down arrows */ |
|
int isprealloc = 1; /*pre-alloc subraster, except arrow*/ |
|
int oldsmashmargin = smashmargin, /* save original smashmargin */ |
|
wasnocatspace = isnocatspace; /* save original isnocatspace */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
initialization |
initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 3460 if ( height < 3 ) goto end_of_job; /* to
|
Line 4252 if ( height < 3 ) goto end_of_job; /* to
|
if ( iswidth ) height = (width+(aspectratio+1)/2)/aspectratio; |
if ( iswidth ) height = (width+(aspectratio+1)/2)/aspectratio; |
else width = (height+(aspectratio+1)/2)/aspectratio; |
else width = (height+(aspectratio+1)/2)/aspectratio; |
if ( strchr(symbol,'=') != NULL /* left or right || bracket wanted */ |
if ( strchr(symbol,'=') != NULL /* left or right || bracket wanted */ |
|| strstr(symbol,"\\|") != NULL ) /* same || in standard tex notation*/ |
|| strstr(symbol,"\\|") != NULL /* same || in standard tex notation*/ |
width = max2(width,5); /* need space between two |'s */ |
|| strstr(symbol,"dbl") != NULL ) /* semantic bracket with ||'s */ |
|
width = max2(width,6); /* need space between two |'s */ |
if ( width < 2 ) width=2; /* set min width */ |
if ( width < 2 ) width=2; /* set min width */ |
if ( strchr(symbol,'(') != NULL /* if left ( */ |
if ( strchr(symbol,'(') != NULL /* if left ( */ |
|| strchr(symbol,')') != NULL ) /* or right ) paren wanted */ |
|| strchr(symbol,')') != NULL ) /* or right ) paren wanted */ |
width = (3*width)/2; /* adjust width */ |
{ width = (3*width)/2; /* adjust width */ |
|
if ( !isdrawparen ) isprealloc=0; } /* don't prealloc if building */ |
|
if ( strchr(symbol,'/') != NULL /* left / */ |
|
|| strstr(symbol,"\\\\") != NULL /* or \\ for right \ */ |
|
|| strstr(symbol,"backsl") != NULL ) /* or \backslash for \ */ |
|
width = max2(height/3,5); |
|
if ( strstr(symbol,"arrow") != NULL ) /* arrow wanted */ |
|
{ width = min2(height/3,20); /* adjust width */ |
|
isprealloc = 0; } /* don't preallocate subraster */ |
|
if ( strchr(symbol,'{') != NULL /* if left { */ |
|
|| strchr(symbol,'}') != NULL ) /* or right } brace wanted */ |
|
{ isprealloc = 0; } /* don't preallocate */ |
/* --- allocate and initialize subraster for constructed delimiter --- */ |
/* --- allocate and initialize subraster for constructed delimiter --- */ |
if ( (sp=new_subraster(width,height,pixsz)) /* allocate new subraster */ |
if ( isprealloc ) /* pre-allocation wanted */ |
== NULL ) goto end_of_job; /* quit if failed */ |
{ if ( (sp=new_subraster(width,height,pixsz)) /* allocate new subraster */ |
/* --- initialize delimiter subraster parameters --- */ |
== NULL ) goto end_of_job; /* quit if failed */ |
sp->type = IMAGERASTER; /* image */ |
/* --- initialize delimiter subraster parameters --- */ |
sp->symdef = NULL; /* not applicable for image */ |
sp->type = IMAGERASTER; /* image */ |
sp->baseline = height/2 + 2; /* is a little above center good? */ |
sp->symdef = NULL; /* not applicable for image */ |
sp->size = NORMALSIZE; /* size (probably unneeded) */ |
sp->baseline = height/2 + 2; /* is a little above center good? */ |
rasp = sp->image; /* pointer to image in subraster */ |
sp->size = NORMALSIZE; /* size (probably unneeded) */ |
|
rasp = sp->image; } /* pointer to image in subraster */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
( ) parens |
( ) parens |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( (lp=strchr(symbol,'(')) != NULL /* left ( paren wanted */ |
if ( (lp=strchr(symbol,'(')) != NULL /* left ( paren wanted */ |
|| (rp=strchr(symbol,')')) != NULL ) /* right ) paren wanted */ |
|| (rp=strchr(symbol,')')) != NULL ) /* right ) paren wanted */ |
{ |
{ |
int mywidth = min2(width,20); /* max width for ()'s */ |
if ( isdrawparen ) { /* draw the paren */ |
circle_raster ( rasp, /* embedded raster image */ |
int mywidth = min2(width,20); /* max width for ()'s */ |
|
circle_raster ( rasp, /* embedded raster image */ |
0, 0, /* row0,col0 are upper-left corner */ |
0, 0, /* row0,col0 are upper-left corner */ |
height-1, mywidth-1, /* row1,col1 are lower-right */ |
height-1, mywidth-1, /* row1,col1 are lower-right */ |
thickness, /* line thickness is 1 pixel */ |
thickness, /* line thickness is 1 pixel */ |
(rp==NULL?"23":"41") ); /* "1234" quadrants to be drawn */ |
(rp==NULL?"23":"41") ); /* "1234" quadrants to be drawn */ |
isokay = 1; /* set flag */ |
isokay = 1; } /* set flag */ |
|
else { |
|
int isleft = (lp!=NULL?1:0); /* true for left, false for right */ |
|
char *parentop = (isleft?"\\leftparentop":"\\rightparentop"), |
|
*parenbot = (isleft?"\\leftparenbot":"\\rightparenbot"), |
|
*parenbar = (isleft?"\\leftparenbar":"\\rightparenbar"); |
|
int baseht=0, barht=0, /* height of base=top+bot, bar */ |
|
ibar=0, nbars=0; /* bar index, #bars between top&bot*/ |
|
int largestsize = min2(2,LARGESTSIZE), /* largest size for parens */ |
|
topfill=(isleft?0:0), botfill=(isleft?0:0), |
|
barfill=(isleft?0:7); /* alignment fillers */ |
|
/* --- get pieces at largest size smaller than total height --- */ |
|
for ( symsize=largestsize; symsize>=0; symsize-- ) /*largest to smallest*/ |
|
{ |
|
/* --- get pieces at current test size --- */ |
|
isokay = 1; /* check for all pieces */ |
|
if ( (symtop=get_symsubraster(parentop,symsize)) == NULL ) isokay=0; |
|
if ( (symbot=get_symsubraster(parenbot,symsize)) == NULL ) isokay=0; |
|
if ( (symbar=get_symsubraster(parenbar,symsize)) == NULL ) isokay=0; |
|
/* --- check sum of pieces against total desired height --- */ |
|
if ( isokay ) { /* all pieces retrieved */ |
|
baseht = (symtop->image)->height + (symbot->image)->height; /*top+bot*/ |
|
barht = (symbar->image)->height; /* bar height */ |
|
if ( baseht < height+5 ) break; /* largest base that's not too big */ |
|
if ( symsize < 1 ) break; /* or smallest available base */ |
|
} /* --- end-of-if(isokay) --- */ |
|
/* --- free test pieces that were too big --- */ |
|
if ( symtop != NULL ) delete_subraster(symtop); /* free top */ |
|
if ( symbot != NULL ) delete_subraster(symbot); /* free bot */ |
|
if ( symbar != NULL ) delete_subraster(symbar); /* free bar */ |
|
isokay = 0; /* nothing available */ |
|
if ( symsize < 1 ) break; /* leave isokay=0 after smallest */ |
|
} /* --- end-of-for(symsize) --- */ |
|
/* --- construct brace from pieces --- */ |
|
if ( isokay ) { /* we have the pieces */ |
|
/* --- add alignment fillers --- */ |
|
smashmargin=0; isnocatspace=99; /*turn off rastcat smashing,space*/ |
|
topsym = (topfill>0?rastcat(new_subraster(topfill,1,1),symtop,3):symtop); |
|
botsym = (botfill>0?rastcat(new_subraster(botfill,1,1),symbot,3):symbot); |
|
barsym = (barfill>0?rastcat(new_subraster(barfill,1,1),symbar,3):symbar); |
|
smashmargin = oldsmashmargin; /* reset smashmargin */ |
|
isnocatspace = wasnocatspace; /* reset isnocatspace */ |
|
/* --- #bars needed between top and bot --- */ |
|
nbars = (barht<1?0:max2(0,1+(height-baseht)/barht)); /* #bars needed */ |
|
/* --- stack pieces --- */ |
|
sp = topsym; /* start with top piece */ |
|
if ( nbars > 0 ) /* need nbars between top and bot */ |
|
for ( ibar=1; ibar<=nbars; ibar++ ) sp = rastack(barsym,sp,1,0,0,2); |
|
sp = rastack(botsym,sp,1,0,0,3); /* bottom below bars or middle */ |
|
delete_subraster(barsym); /* barsym no longer needed */ |
|
} /* --- end-of-if(isokay) --- */ |
|
} /* --- end-of-if/else(isdrawparen) --- */ |
} /* --- end-of-if(left- or right-() paren wanted) --- */ |
} /* --- end-of-if(left- or right-() paren wanted) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
|
{ } braces |
|
-------------------------------------------------------------------------- */ |
|
else |
|
if ( (lp=strchr(symbol,'{')) != NULL /* left { brace wanted */ |
|
|| (rp=strchr(symbol,'}')) != NULL ) /* right } brace wanted */ |
|
{ |
|
int isleft = (lp!=NULL?1:0); /* true for left, false for right */ |
|
char *bracetop = (isleft?"\\leftbracetop":"\\rightbracetop"), |
|
*bracebot = (isleft?"\\leftbracebot":"\\rightbracebot"), |
|
*bracemid = (isleft?"\\leftbracemid":"\\rightbracemid"), |
|
*bracebar = (isleft?"\\leftbracebar":"\\rightbracebar"); |
|
int baseht=0, barht=0, /* height of base=top+bot+mid, bar */ |
|
ibar=0, nbars=0; /* bar index, #bars above,below mid*/ |
|
int largestsize = min2(2,LARGESTSIZE), /* largest size for braces */ |
|
topfill=(isleft?4:0), botfill=(isleft?4:0), |
|
midfill=(isleft?0:4), barfill=(isleft?4:4); /* alignment fillers */ |
|
/* --- get pieces at largest size smaller than total height --- */ |
|
for ( symsize=largestsize; symsize>=0; symsize-- ) /*largest to smallest*/ |
|
{ |
|
/* --- get pieces at current test size --- */ |
|
isokay = 1; /* check for all pieces */ |
|
if ( (symtop=get_symsubraster(bracetop,symsize)) == NULL ) isokay=0; |
|
if ( (symbot=get_symsubraster(bracebot,symsize)) == NULL ) isokay=0; |
|
if ( (symmid=get_symsubraster(bracemid,symsize)) == NULL ) isokay=0; |
|
if ( (symbar=get_symsubraster(bracebar,symsize)) == NULL ) isokay=0; |
|
/* --- check sum of pieces against total desired height --- */ |
|
if ( isokay ) { /* all pieces retrieved */ |
|
baseht = (symtop->image)->height + (symbot->image)->height |
|
+ (symmid->image)->height; /* top+bot+mid height */ |
|
barht = (symbar->image)->height; /* bar height */ |
|
if ( baseht < height+5 ) break; /* largest base that's not too big */ |
|
if ( symsize < 1 ) break; /* or smallest available base */ |
|
} /* --- end-of-if(isokay) --- */ |
|
/* --- free test pieces that were too big --- */ |
|
if ( symtop != NULL ) delete_subraster(symtop); /* free top */ |
|
if ( symbot != NULL ) delete_subraster(symbot); /* free bot */ |
|
if ( symmid != NULL ) delete_subraster(symmid); /* free mid */ |
|
if ( symbar != NULL ) delete_subraster(symbar); /* free bar */ |
|
isokay = 0; /* nothing available */ |
|
if ( symsize < 1 ) break; /* leave isokay=0 after smallest */ |
|
} /* --- end-of-for(symsize) --- */ |
|
/* --- construct brace from pieces --- */ |
|
if ( isokay ) { /* we have the pieces */ |
|
/* --- add alignment fillers --- */ |
|
smashmargin=0; isnocatspace=99; /*turn off rastcat smashing,space*/ |
|
topsym = (topfill>0?rastcat(new_subraster(topfill,1,1),symtop,3):symtop); |
|
botsym = (botfill>0?rastcat(new_subraster(botfill,1,1),symbot,3):symbot); |
|
midsym = (midfill>0?rastcat(new_subraster(midfill,1,1),symmid,3):symmid); |
|
barsym = (barfill>0?rastcat(new_subraster(barfill,1,1),symbar,3):symbar); |
|
smashmargin = oldsmashmargin; /* reset smashmargin */ |
|
isnocatspace = wasnocatspace; /* reset isnocatspace */ |
|
/* --- #bars needed on each side of mid piece --- */ |
|
nbars = (barht<1?0:max2(0,1+(height-baseht)/barht/2)); /*#bars per side*/ |
|
/* --- stack pieces --- */ |
|
sp = topsym; /* start with top piece */ |
|
if ( nbars > 0 ) /* need nbars above middle */ |
|
for ( ibar=1; ibar<=nbars; ibar++ ) sp = rastack(barsym,sp,1,0,0,2); |
|
sp = rastack(midsym,sp,1,0,0,3); /*mid after top or bars*/ |
|
if ( nbars > 0 ) /* need nbars below middle */ |
|
for ( ibar=1; ibar<=nbars; ibar++ ) sp = rastack(barsym,sp,1,0,0,2); |
|
sp = rastack(botsym,sp,1,0,0,3); /* bottom below bars or middle */ |
|
delete_subraster(barsym); /* barsym no longer needed */ |
|
} /* --- end-of-if(isokay) --- */ |
|
} /* --- end-of-if(left- or right-{} brace wanted) --- */ |
|
/* ------------------------------------------------------------------------- |
[ ] brackets |
[ ] brackets |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
else |
else |
if ( (lp=strchr(symbol,'[')) != NULL /* left [ bracket wanted */ |
if ( (lp=strchr(symbol,'[')) != NULL /* left [ bracket wanted */ |
|| (rp=strchr(symbol,']')) != NULL ) /* right ] bracket wanted */ |
|| (rp=strchr(symbol,']')) != NULL /* right ] bracket wanted */ |
{ |
|| (lp2=strstr(symbol,"lceil")) != NULL /* left ceiling wanted */ |
/* --- rule_raster ( rasp, top, left, width, height, type=0 ) --- */ |
|| (rp2=strstr(symbol,"rceil")) != NULL /* right ceiling wanted */ |
int mywidth = min2(width,12); /* max width for horizontal bars */ |
|| (lp3=strstr(symbol,"lfloor")) != NULL /* left floor wanted */ |
thickness = 1; /* set lines 1 or 2 pixels thick */ |
|| (rp3=strstr(symbol,"rfloor")) != NULL /* right floor wanted */ |
rule_raster(rasp, 0,0, mywidth,thickness, 0); /* top horizontal bar */ |
|| (lp4=strstr(symbol,"llbrack")) != NULL /* left semantic bracket */ |
rule_raster(rasp, height-thickness,0, mywidth,thickness, 0); /* bottom */ |
|| (rp4=strstr(symbol,"rrbrack")) != NULL ) /* right semantic bracket */ |
if ( lp != NULL ) /* left [ bracket wanted */ |
{ |
|
/* --- use rule_raster ( rasp, top, left, width, height, type=0 ) --- */ |
|
int mywidth = min2(width,12), /* max width for horizontal bars */ |
|
wthick = 1; /* thickness of top.bottom bars */ |
|
thickness = (height<25?1:2); /* set lines 1 or 2 pixels thick */ |
|
if ( lp2!=NULL || rp2!=NULL || lp3!=NULL || rp3 !=NULL ) /*ceil or floor*/ |
|
wthick = thickness; /* same thickness for top/bot bar */ |
|
if ( lp3==NULL && rp3==NULL ) /* set top bar if floor not wanted */ |
|
rule_raster(rasp, 0,0, mywidth,wthick, 0); /* top horizontal bar */ |
|
if ( lp2==NULL && rp2==NULL ) /* set bot bar if ceil not wanted */ |
|
rule_raster(rasp, height-wthick,0, mywidth,thickness, 0); /* bottom */ |
|
if ( lp!=NULL || lp2!=NULL || lp3!=NULL || lp4!=NULL ) /* left bracket */ |
rule_raster(rasp, 0,0, thickness,height, 0); /* left vertical bar */ |
rule_raster(rasp, 0,0, thickness,height, 0); /* left vertical bar */ |
if ( rp != NULL ) /* right ] bracket wanted */ |
if ( lp4 != NULL ) /* 2nd left vertical bar needed */ |
|
rule_raster(rasp, 0,thickness+1, 1,height, 0); /* 2nd left vertical bar */ |
|
if ( rp!=NULL || rp2!=NULL || rp3!=NULL || rp4!=NULL ) /* right bracket */ |
rule_raster(rasp, 0,mywidth-thickness, thickness,height, 0); /* right */ |
rule_raster(rasp, 0,mywidth-thickness, thickness,height, 0); /* right */ |
|
if ( rp4 != NULL ) /* 2nd right vertical bar needed */ |
|
rule_raster(rasp, 0,mywidth-thickness-2, 1,height, 0); /*2nd right vert*/ |
isokay = 1; /* set flag */ |
isokay = 1; /* set flag */ |
} /* --- end-of-if(left- or right-[] bracket wanted) --- */ |
} /* --- end-of-if(left- or right-[] bracket wanted) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 3514 else
|
Line 4451 else
|
if ( (lp=strchr(symbol,'<')) != NULL /* left < bracket wanted */ |
if ( (lp=strchr(symbol,'<')) != NULL /* left < bracket wanted */ |
|| (rp=strchr(symbol,'>')) != NULL ) /* right > bracket wanted */ |
|| (rp=strchr(symbol,'>')) != NULL ) /* right > bracket wanted */ |
{ |
{ |
/* --- line_raster ( rasp, row0, col0, row1, col1, thickness ) --- */ |
/* --- use line_raster( rasp, row0, col0, row1, col1, thickness ) --- */ |
int mywidth = min2(width,12); /* max width for brackets */ |
int mywidth = min2(width,12), /* max width for brackets */ |
thickness = 1; /* set line pixel thickness */ |
mythick = 1; /* all lines one pixel thick */ |
|
thickness = (height<25?1:2); /* set line pixel thickness */ |
if ( lp != NULL ) /* left < bracket wanted */ |
if ( lp != NULL ) /* left < bracket wanted */ |
{ line_raster(rasp,height/2,0,0,mywidth-1,thickness); |
{ line_raster(rasp,height/2,0,0,mywidth-1,mythick); |
line_raster(rasp,height/2,0,height-1,mywidth-1,thickness); } |
if ( thickness>1 ) |
|
line_raster(rasp,height/2,1,0,mywidth-1,mythick); |
|
line_raster(rasp,height/2,0,height-1,mywidth-1,mythick); |
|
if ( thickness>1 ) |
|
line_raster(rasp,height/2,1,height-1,mywidth-1,mythick); } |
if ( rp != NULL ) /* right > bracket wanted */ |
if ( rp != NULL ) /* right > bracket wanted */ |
{ line_raster(rasp,height/2,mywidth-1,0,0,thickness); |
{ line_raster(rasp,height/2,mywidth-1,0,0,mythick); |
line_raster(rasp,height/2,mywidth-1,height-1,0,thickness); } |
if ( thickness>1 ) |
|
line_raster(rasp,height/2,mywidth-2,0,0,mythick); |
|
line_raster(rasp,height/2,mywidth-1,height-1,0,mythick); |
|
if ( thickness>1 ) |
|
line_raster(rasp,height/2,mywidth-2,height-1,0,mythick); } |
isokay = 1; /* set flag */ |
isokay = 1; /* set flag */ |
} /* --- end-of-if(left- or right-<> bracket wanted) --- */ |
} /* --- end-of-if(left- or right-<> bracket wanted) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
|
/ \ delimiters |
|
-------------------------------------------------------------------------- */ |
|
else |
|
if ( (lp=strchr(symbol,'/')) != NULL /* left / wanted */ |
|
|| (rp=strstr(symbol,"\\\\")) != NULL /* right \ wanted */ |
|
|| (rp2=strstr(symbol,"backsl")) != NULL ) /* right \ wanted */ |
|
{ |
|
/* --- use line_raster( rasp, row0, col0, row1, col1, thickness ) --- */ |
|
int mywidth = width; /* max width for / \ */ |
|
thickness = 1; /* set line pixel thickness */ |
|
if ( lp != NULL ) /* left / wanted */ |
|
line_raster(rasp,0,mywidth-1,height-1,0,thickness); |
|
if ( rp!=NULL || rp2!=NULL ) /* right \ wanted */ |
|
line_raster(rasp,0,0,height-1,mywidth-1,thickness); |
|
isokay = 1; /* set flag */ |
|
} /* --- end-of-if(left- or right-/\ delimiter wanted) --- */ |
|
/* ------------------------------------------------------------------------- |
|
arrow delimiters |
|
-------------------------------------------------------------------------- */ |
|
else |
|
if ( strstr(symbol,"arrow") != NULL ) /* arrow delimiter wanted */ |
|
{ |
|
/* --- use uparrow_subraster(width,height,pixsz,drctn,isBig) --- */ |
|
int mywidth = width; /* max width for / \ */ |
|
int isBig = (strstr(symbol,"Up")!=NULL /* isBig if we have an Up */ |
|
|| strstr(symbol,"Down")!=NULL); /* or a Down */ |
|
int drctn = +1; /* init for uparrow */ |
|
if ( strstr(symbol,"down")!=NULL /* down if we have down */ |
|
|| strstr(symbol,"Down")!=NULL ) /* or Down */ |
|
{ drctn = (-1); /* reset direction to down */ |
|
if ( strstr(symbol,"up")!=NULL /* updown if we have up or Up */ |
|
|| strstr(symbol,"Up")!=NULL ) /* and down or Down */ |
|
drctn = 0; } /* reset direction to updown */ |
|
sp = uparrow_subraster(mywidth,height,pixsz,drctn,isBig); |
|
if ( sp != NULL ) |
|
{ sp->type = IMAGERASTER; /* image */ |
|
sp->symdef = NULL; /* not applicable for image */ |
|
sp->baseline = height/2 + 2; /* is a little above center good? */ |
|
sp->size = NORMALSIZE; /* size (probably unneeded) */ |
|
isokay = 1; } /* set flag */ |
|
} /* --- end-of-if(arrow delimiter wanted) --- */ |
|
/* ------------------------------------------------------------------------- |
\- for | | brackets or \= for || || brackets |
\- for | | brackets or \= for || || brackets |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
else |
else |
Line 3538 else
|
Line 4526 else
|
int midcol = width/2; /* middle col, left of mid if even */ |
int midcol = width/2; /* middle col, left of mid if even */ |
if ( rp != NULL /* left or right || bracket wanted */ |
if ( rp != NULL /* left or right || bracket wanted */ |
|| rp2 != NULL ) /* or || in standard tex notation */ |
|| rp2 != NULL ) /* or || in standard tex notation */ |
{ thickness = 1; /* each | of || one pixel thick */ |
{ thickness = (height<75?1:2); /* each | of || 1 or 2 pixels thick*/ |
rule_raster(rasp, 0,max2(0,midcol-2), thickness,height, 0); /* left */ |
rule_raster(rasp, 0,max2(0,midcol-2), thickness,height, 0); /* left */ |
rule_raster(rasp, 0,min2(width,midcol+2), thickness,height, 0); } |
rule_raster(rasp, 0,min2(width,midcol+2), thickness,height, 0); } |
else /*nb, lp2 spuriously set if rp2 set*/ |
else /*nb, lp2 spuriously set if rp2 set*/ |
if ( lp != NULL /* left or right | bracket wanted */ |
if ( lp != NULL /* left or right | bracket wanted */ |
|| lp2 != NULL ) /* ditto for synomym */ |
|| lp2 != NULL ) /* ditto for synomym */ |
{ thickness = 1; /* set | two pixels thick */ |
{ thickness = (height<75?1:2); /* set | 1 or 2 pixels thick */ |
rule_raster(rasp, 0,midcol, thickness,height, 0); } /*mid vertical bar*/ |
rule_raster(rasp, 0,midcol, thickness,height, 0); } /*mid vertical bar*/ |
isokay = 1; /* set flag */ |
isokay = 1; /* set flag */ |
} /* --- end-of-if(left- or right-[] bracket wanted) --- */ |
} /* --- end-of-if(left- or right-[] bracket wanted) --- */ |
Line 3552 else
|
Line 4540 else
|
back to caller |
back to caller |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
end_of_job: |
end_of_job: |
|
if ( msgfp!=NULL && msglevel>=99 ) |
|
fprintf(msgfp,"make_delim> symbol=%.50s, isokay=%d\n", |
|
(symbol==NULL?"null":symbol),isokay); |
if ( !isokay ) /* don't have requested delimiter */ |
if ( !isokay ) /* don't have requested delimiter */ |
{ delete_subraster(sp); /* so free unneeded structure */ |
{ if (sp!=NULL) delete_subraster(sp); /* so free unneeded structure */ |
sp = NULL; } /* and signal error to caller */ |
sp = NULL; } /* and signal error to caller */ |
return ( sp ); /*back to caller with delim or NULL*/ |
return ( sp ); /*back to caller with delim or NULL*/ |
} /* --- end-of-function make_delim() --- */ |
} /* --- end-of-function make_delim() --- */ |
Line 3598 static char *prefixes[] = /*e.g., \big
|
Line 4589 static char *prefixes[] = /*e.g., \big
|
"\\big", "\\Big", "\\bigg", "\\Bigg", |
"\\big", "\\Big", "\\bigg", "\\Bigg", |
"\\bigl", "\\Bigl", "\\biggl", "\\Biggl", |
"\\bigl", "\\Bigl", "\\biggl", "\\Biggl", |
"\\bigr", "\\Bigr", "\\biggr", "\\Biggr", NULL }; |
"\\bigr", "\\Bigr", "\\biggr", "\\Biggr", NULL }; |
|
static char *starred[] = /* may be followed by * */ |
|
{ "\\hspace", "\\!", NULL }; |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
just return the next char if it's not \ |
just return the next char if it's not \ |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 3637 for ( iprefix=0; prefixes[iprefix] != NU
|
Line 4630 for ( iprefix=0; prefixes[iprefix] != NU
|
/* --- every \ must be followed by at least one char, e.g., \[ --- */ |
/* --- every \ must be followed by at least one char, e.g., \[ --- */ |
if ( esclen < 1 ) /* \ followed by non-alpha */ |
if ( esclen < 1 ) /* \ followed by non-alpha */ |
*ptoken++ = *expression++; /*copy non-alpha, bump ptrs*/ |
*ptoken++ = *expression++; /*copy non-alpha, bump ptrs*/ |
else { /* normal alpha \sequence */ |
|
/* --- respect spaces in text mode, except first space after \escape --- */ |
|
if ( istext > 0 ) /* in \rm or \it text mode */ |
|
if ( istext != 3 ) /* but not \mathbb */ |
|
if ( isthischar(*expression,WHITEDELIM) ) /* delim follows \sequence */ |
|
expression++; } /* so flush delim */ |
|
*ptoken = '\000'; /* null-terminate token */ |
*ptoken = '\000'; /* null-terminate token */ |
|
/* --- check for \hspace* or other starred commands --- */ |
|
for ( iprefix=0; starred[iprefix] != NULL; iprefix++ ) /* run thru list */ |
|
if ( strcmp(chartoken,starred[iprefix]) == 0 ) /* have an exact match */ |
|
if ( *expression == '*' ) /* follows by a * */ |
|
{ *ptoken++ = *expression++; /* copy * and bump ptr */ |
|
*ptoken = '\000'; /* null-terminate token */ |
|
break; } /* stop checking */ |
|
/* --- respect spaces in text mode, except first space after \escape --- */ |
|
if ( esclen >= 1 ) { /*only for alpha \sequences*/ |
|
if ( istextmode ) /* in \rm or \it text mode */ |
|
if ( isthischar(*expression,WHITEDELIM) ) /* delim follows \sequence */ |
|
expression++; } /* so flush delim */ |
/* --- back to caller --- */ |
/* --- back to caller --- */ |
end_of_job: |
end_of_job: |
if ( msgfp!=NULL && msglevel>=999 ) |
if ( msgfp!=NULL && msglevel>=999 ) |
Line 3708 char *texsubexpr ( char *expression, cha
|
Line 4707 char *texsubexpr ( char *expression, cha
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texchar(); /*next char (or \sequence) from expression*/ |
char *texchar(); /*next char (or \sequence) from expression*/ |
char *leftptr, leftdelim[32] = "(\000", /* left( found in expression */ |
char *leftptr, leftdelim[256] = "(\000", /* left( found in expression */ |
rightdelim[32] = ")\000"; /* and matching right) */ |
rightdelim[256] = ")\000"; /* and matching right) */ |
char *origexpression=expression, *origsubexpr=subexpr; /*original inputs*/ |
char *origexpression=expression, *origsubexpr=subexpr; /*original inputs*/ |
|
char *strtexchr(), *texleft(); /* check for \left, and get it */ |
int gotescape = 0, /* true if leading char of expression is \ */ |
int gotescape = 0, /* true if leading char of expression is \ */ |
prevescape = 0; /* while parsing, true if preceding char \ */ |
prevescape = 0; /* while parsing, true if preceding char \ */ |
int isbrace(); /* check for left,right braces */ |
int isbrace(); /* check for left,right braces */ |
int isanyright = 1; /* true matches any right with left, (...] */ |
int isanyright = 1; /* true matches any right with left, (...] */ |
int isleftdot = 0; /* true if left brace is a \. */ |
int isleftdot = 0; /* true if left brace is a \. */ |
int nestlevel = 1; /* current # of nested braces */ |
int nestlevel = 1; /* current # of nested braces */ |
int subsz=0 /*, maxsubsz=8192*/; /* #chars in returned subexpr[] buffer*/ |
int subsz=0 /*,maxsubsz=MAXSUBXSZ*/; /*#chars in returned subexpr buffer*/ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
skip leading whitespace and just return the next char if it's not { |
skip leading whitespace and just return the next char if it's not { |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 3727 if ( expression == NULL ) return(NULL);
|
Line 4727 if ( expression == NULL ) return(NULL);
|
skipwhite(expression); /* leading whitespace gone */ |
skipwhite(expression); /* leading whitespace gone */ |
if ( *expression == '\000' ) return(NULL); /* nothing left to scan */ |
if ( *expression == '\000' ) return(NULL); /* nothing left to scan */ |
/* --- set maxsubsz --- */ |
/* --- set maxsubsz --- */ |
if ( maxsubsz < 1 ) maxsubsz = 8192; /* input 0 means unlimited */ |
if ( maxsubsz < 1 ) maxsubsz = MAXSUBXSZ-2; /* input 0 means unlimited */ |
/* --- check for escape --- */ |
/* --- check for escape --- */ |
if ( isthischar(*expression,ESCAPE) ) /* expression is escaped */ |
if ( isthischar(*expression,ESCAPE) ) /* expression is escaped */ |
gotescape = 1; /* so set flag accordingly */ |
gotescape = 1; /* so set flag accordingly */ |
|
/* --- check for \left...\right --- */ |
|
if ( gotescape ) /* begins with \ */ |
|
if ( memcmp(expression+1,"left",4) ) /* and followed by left */ |
|
if ( strchr(left,'l') != NULL ) /* caller wants \left's */ |
|
if ( strtexchr(expression,"\\left") == expression ) /*expression=\left...*/ |
|
{ char *pright = texleft(expression,subexpr,maxsubsz, /* find ...\right*/ |
|
(isdelim?NULL:leftdelim),rightdelim); |
|
if ( isdelim ) strcat(subexpr,rightdelim); /* caller wants delims */ |
|
return ( pright ); /*back to caller past \right*/ |
|
} /* --- end-of-if(expression=="\\left") --- */ |
/* --- if first char isn't left{ or script, just return it to caller --- */ |
/* --- if first char isn't left{ or script, just return it to caller --- */ |
if ( !isbrace(expression,left,isescape) ) /* not a left{ */ |
if ( !isbrace(expression,left,isescape) ) { /* not a left{ */ |
if ( !isthischar(*expression,SCRIPTS) ) /* and not a script */ |
if ( !isthischar(*expression,SCRIPTS) ) /* and not a script */ |
return ( texchar(expression,subexpr) ); /* next char to caller */ |
return ( texchar(expression,subexpr) ); /* next char to caller */ |
else /* --- kludge for super/subscripts to accommodate texscripts() --- */ |
else /* --- kludge for super/subscripts to accommodate texscripts() --- */ |
{ *subexpr++ = *expression; /* signal script */ |
{ *subexpr++ = *expression; /* signal script */ |
*subexpr = '\000'; /* null-terminate subexpr */ |
*subexpr = '\000'; /* null-terminate subexpr */ |
return ( expression ); } /* leave script in stream */ |
return ( expression ); } } /* leave script in stream */ |
/* --- extract left and find matching right delimiter --- */ |
/* --- extract left and find matching right delimiter --- */ |
*leftdelim = *(expression+gotescape); /* the left( in expression */ |
*leftdelim = *(expression+gotescape); /* the left( in expression */ |
if ( (gotescape && *leftdelim == '.') /* we have a left \. */ |
if ( (gotescape && *leftdelim == '.') /* we have a left \. */ |
Line 3756 accumulate chars between balanced {}'s,
|
Line 4766 accumulate chars between balanced {}'s,
|
/* --- first initialize by bumping past left{ or \{ --- */ |
/* --- first initialize by bumping past left{ or \{ --- */ |
if ( isdelim ) *subexpr++ = *expression++; /*caller wants { in subexpr*/ |
if ( isdelim ) *subexpr++ = *expression++; /*caller wants { in subexpr*/ |
else expression++; /* always bump past left{ */ |
else expression++; /* always bump past left{ */ |
if ( gotescape ) /*need to bump another char*/ |
if ( gotescape ) { /*need to bump another char*/ |
if ( isdelim ) *subexpr++ = *expression++; /* caller wants char, too */ |
if ( isdelim ) *subexpr++ = *expression++; /* caller wants char, too */ |
else expression++; /* else just bump past it */ |
else expression++; } /* else just bump past it */ |
/* --- set maximum size for numerical arguments --- */ |
/* --- set maximum size for numerical arguments --- */ |
if ( 0 ) /* check turned on or off? */ |
if ( 0 ) /* check turned on or off? */ |
if ( !isescape && !isdelim ) /*looking for numerical arg*/ |
if ( !isescape && !isdelim ) /*looking for numerical arg*/ |
Line 3771 while ( 1 ) /*until balanced right}
|
Line 4781 while ( 1 ) /*until balanced right}
|
{ if ( 0 && (!isescape && !isdelim) ) /*looking for numerical arg,*/ |
{ if ( 0 && (!isescape && !isdelim) ) /*looking for numerical arg,*/ |
{ expression = origexpression; /* so end-of-string is error*/ |
{ expression = origexpression; /* so end-of-string is error*/ |
subexpr = origsubexpr; } /* so reset all ptrs */ |
subexpr = origsubexpr; } /* so reset all ptrs */ |
if ( isdelim ) /* generate fake right */ |
if ( isdelim ) { /* generate fake right */ |
if ( gotescape ) /* need escaped right */ |
if ( gotescape ) /* need escaped right */ |
{ *subexpr++ = '\\'; /* set escape char */ |
{ *subexpr++ = '\\'; /* set escape char */ |
*subexpr++ = '.'; } /* and fake \right. */ |
*subexpr++ = '.'; } /* and fake \right. */ |
else /* escape not wanted */ |
else /* escape not wanted */ |
*subexpr++ = *rightdelim; /* so fake actual right */ |
*subexpr++ = *rightdelim; } /* so fake actual right */ |
*subexpr = '\000'; /* null-terminate subexpr */ |
*subexpr = '\000'; /* null-terminate subexpr */ |
return ( expression ); } /* back with final token */ |
return ( expression ); } /* back with final token */ |
/* --- check preceding char for escape --- */ |
/* --- check preceding char for escape --- */ |
Line 3811 while ( 1 ) /*until balanced right}
|
Line 4821 while ( 1 ) /*until balanced right}
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: texleft (expression,subexpr,maxsubsz,ldelim,rdelim) |
|
* Purpose: scans expression, starting after opening \left, |
|
* and returning ptr after matching closing \right. |
|
* Everything between is returned in subexpr, if given. |
|
* Likewise, if given, ldelim returns delimiter after \left |
|
* and rdelim returns delimiter after \right. |
|
* If ldelim is given, the returned subexpr doesn't include it. |
|
* If rdelim is given, the returned pointer is after that delim. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I) char * to first char of null-terminated |
|
* string immediately following opening \left |
|
* subexpr (O) char * to null-terminated string returning |
|
* either everything between balanced |
|
* \left ... \right. If leftdelim given, |
|
* subexpr does _not_ contain that delimiter. |
|
* maxsubsz (I) int containing max #bytes returned |
|
* in subexpr buffer (0 means unlimited) |
|
* ldelim (O) char * returning delimiter following |
|
* opening \left |
|
* rdelim (O) char * returning delimiter following |
|
* closing \right |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( char * ) ptr to the first char of expression |
|
* past closing \right, or past closing |
|
* right delimiter if rdelim!=NULL, |
|
* or NULL for any error. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
char *texleft ( char *expression, char *subexpr, int maxsubsz, |
|
char *ldelim, char *rdelim ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
char *texchar(), /* get delims after \left,\right */ |
|
*strtexchr(), *pright=expression; /* locate matching \right */ |
|
static char left[16]="\\left", right[16]="\\right"; /* tex delimiters */ |
|
int sublen = 0; /* #chars between \left...\right */ |
|
/* ------------------------------------------------------------------------- |
|
initialization |
|
-------------------------------------------------------------------------- */ |
|
/* --- init output --- */ |
|
if ( subexpr != NULL ) *subexpr = '\000'; /* init subexpr, if given */ |
|
if ( ldelim != NULL ) *ldelim = '\000'; /* init ldelim, if given */ |
|
if ( rdelim != NULL ) *rdelim = '\000'; /* init rdelim, if given */ |
|
/* --- check args --- */ |
|
if ( expression == NULL ) goto end_of_job; /* no input supplied */ |
|
if ( *expression == '\000' ) goto end_of_job; /* nothing after \left */ |
|
/* --- determine left delimiter --- */ |
|
if ( ldelim != NULL ) /* caller wants left delim */ |
|
{ skipwhite(expression); /* interpret \left ( as \left( */ |
|
expression = texchar(expression,ldelim); } /*delim from expression*/ |
|
/* ------------------------------------------------------------------------- |
|
locate \right balancing opening \left |
|
-------------------------------------------------------------------------- */ |
|
/* --- first \right following \left --- */ |
|
if ( (pright=strtexchr(expression,right)) /* look for \right after \left */ |
|
!= NULL ) { /* found it */ |
|
/* --- find matching \right by pushing past any nested \left's --- */ |
|
char *pleft = expression; /* start after first \left( */ |
|
while ( 1 ) { /*break when matching \right found*/ |
|
/* -- locate next nested \left if there is one --- */ |
|
if ( (pleft=strtexchr(pleft,left)) /* find next \left */ |
|
== NULL ) break; /*no more, so matching \right found*/ |
|
pleft += strlen(left); /* push ptr past \left token */ |
|
if ( pleft >= pright ) break; /* not nested if \left after \right*/ |
|
/* --- have nested \left, so push forward to next \right --- */ |
|
if ( (pright=strtexchr(pright+strlen(right),right)) /* find next \right */ |
|
== NULL ) break; /* ran out of \right's */ |
|
} /* --- end-of-while(1) --- */ |
|
} /* --- end-of-if(pright!=NULL) --- */ |
|
/* --- set subexpression length, push pright past \right --- */ |
|
if ( pright != (char *)NULL ) /* found matching \right */ |
|
{ sublen = (int)(pright-expression); /* #chars between \left...\right */ |
|
pright += strlen(right); } /* so push pright past \right */ |
|
/* ------------------------------------------------------------------------- |
|
get rightdelim and subexpr between \left...\right |
|
-------------------------------------------------------------------------- */ |
|
/* --- get delimiter following \right --- */ |
|
if ( rdelim != NULL ) { /* caller wants right delim */ |
|
if ( pright == (char *)NULL ) /* assume \right. at end of exprssn*/ |
|
{ strcpy(rdelim,"."); /* set default \right. */ |
|
sublen = strlen(expression); /* use entire remaining expression */ |
|
pright = expression + sublen; } /* and push pright to end-of-string*/ |
|
else /* have explicit matching \right */ |
|
{ skipwhite(pright); /* interpret \right ) as \right) */ |
|
pright = texchar(pright,rdelim); /* pull delim from expression */ |
|
if ( *rdelim == '\000' ) strcpy(rdelim,"."); } } /* or set \right. */ |
|
/* --- get subexpression between \left...\right --- */ |
|
if ( sublen > 0 ) /* have subexpr */ |
|
if ( subexpr != NULL ) { /* and caller wants it */ |
|
if ( maxsubsz > 0 ) sublen = min2(sublen,maxsubsz-1); /* max buffer size */ |
|
memcpy(subexpr,expression,sublen); /* stuff between \left...\right */ |
|
subexpr[sublen] = '\000'; } /* null-terminate subexpr */ |
|
end_of_job: |
|
if ( msglevel>=99 && msgfp!=NULL ) |
|
{ fprintf(msgfp,"texleft> ldelim=%s, rdelim=%s, subexpr=%.128s\n", |
|
(ldelim==NULL?"none":ldelim),(rdelim==NULL?"none":rdelim), |
|
(subexpr==NULL?"none":subexpr)); fflush(msgfp); } |
|
return ( pright ); |
|
} /* --- end-of-function texleft --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: texscripts ( expression, subscript, superscript, which ) |
* Function: texscripts ( expression, subscript, superscript, which ) |
* Purpose: scans expression, returning subscript and/or superscript |
* Purpose: scans expression, returning subscript and/or superscript |
* if expression is of the form _x^y or ^{x}_{y}, |
* if expression is of the form _x^y or ^{x}_{y}, |
Line 3846 Allocations and Declarations
|
Line 4962 Allocations and Declarations
|
char *texsubexpr(); /* next subexpression from expression */ |
char *texsubexpr(); /* next subexpression from expression */ |
int gotsub=0, gotsup=0; /* check that we don't eat, e.g., x_1_2 */ |
int gotsub=0, gotsup=0; /* check that we don't eat, e.g., x_1_2 */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
init "scripts" and skip leading whitespace |
init "scripts" |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- skip leading whitespace and check for end-of-string --- */ |
if ( subscript != NULL ) *subscript = '\000'; /*init in case no subscript*/ |
*subscript = *superscript = '\000'; /* init in case no scripts */ |
if ( superscript!=NULL ) *superscript = '\000'; /*init in case no super*/ |
skipwhite(expression); /* leading whitespace gone */ |
|
if ( *expression == '\000' ) return(expression); /* nothing left to scan */ |
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
get subscript and/or superscript from expression |
get subscript and/or superscript from expression |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
while ( expression != NULL ) |
while ( expression != NULL ) { |
|
skipwhite(expression); /* leading whitespace gone */ |
|
if ( *expression == '\000' ) return(expression); /* nothing left to scan */ |
if ( isthischar(*expression,SUBSCRIPT) /* found _ */ |
if ( isthischar(*expression,SUBSCRIPT) /* found _ */ |
&& (which==1 || which>2 ) ) /* and caller wants it */ |
&& (which==1 || which>2 ) ) /* and caller wants it */ |
{ if ( gotsub /* found 2nd subscript */ |
{ if ( gotsub /* found 2nd subscript */ |
Line 3871 while ( expression != NULL )
|
Line 4987 while ( expression != NULL )
|
expression = texsubexpr(expression+1,superscript,0,"{","}",0,0); } |
expression = texsubexpr(expression+1,superscript,0,"{","}",0,0); } |
else /* neither _ nor ^ */ |
else /* neither _ nor ^ */ |
return ( expression ); /*return ptr past "scripts"*/ |
return ( expression ); /*return ptr past "scripts"*/ |
|
} /* --- end-of-while(expression!=NULL) --- */ |
return ( expression ); |
return ( expression ); |
} /* --- end-of-function texscripts() --- */ |
} /* --- end-of-function texscripts() --- */ |
|
|
Line 3913 int gotescape = 0, /* true if leading c
|
Line 5030 int gotescape = 0, /* true if leading c
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
check for brace |
check for brace |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- first check for end-of-string --- */ |
/* --- first check for end-of-string or \= ligature --- */ |
if ( *expression == '\000' ) return(0); /* nothing to check */ |
if ( *expression == '\000' /* nothing to check */ |
|
|| isligature ) goto end_of_job; /* have a \= ligature */ |
/* --- check leading char for escape --- */ |
/* --- check leading char for escape --- */ |
if ( isthischar(*expression,ESCAPE) ) /* expression is escaped */ |
if ( isthischar(*expression,ESCAPE) ) /* expression is escaped */ |
{ gotescape = 1; /* so set flag accordingly */ |
{ gotescape = 1; /* so set flag accordingly */ |
Line 3930 if ( gotbrace && isthischar(*expression,
|
Line 5048 if ( gotbrace && isthischar(*expression,
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
back to caller |
back to caller |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( gotbrace && /* found a brace */ |
end_of_job: |
|
if ( msglevel>=999 && msgfp!=NULL ) |
|
{ fprintf(msgfp,"isbrace> expression=%.8s, gotbrace=%d (isligature=%d)\n", |
|
expression,gotbrace,isligature); fflush(msgfp); } |
|
if ( gotbrace && /* found a brace */ |
( isescape==2 || /* escape irrelevant */ |
( isescape==2 || /* escape irrelevant */ |
gotescape==isescape ) /* un/escaped as requested */ |
gotescape==isescape ) /* un/escaped as requested */ |
) return ( 1 ); return ( 0 ); /* return 1,0 accordingly */ |
) return ( 1 ); return ( 0 ); /* return 1,0 accordingly */ |
Line 3985 process preamble if present
|
Line 5107 process preamble if present
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/*process_preamble:*/ |
/*process_preamble:*/ |
if ( (dollar=strchr(expression,'$')) /* $ signals preceding preamble */ |
if ( (dollar=strchr(expression,'$')) /* $ signals preceding preamble */ |
!= NULL ) /* found embedded $ */ |
!= NULL ) { /* found embedded $ */ |
if ( (prelen = (int)(dollar-expression)) /*#chars in expression preceding $*/ |
if ( (prelen = (int)(dollar-expression)) /*#chars in expression preceding $*/ |
> 0 ) { /* must have preamble preceding $ */ |
> 0 ) { /* must have preamble preceding $ */ |
if ( prelen < 65 ) { /* too long for a prefix */ |
if ( prelen < 65 ) { /* too long for a prefix */ |
Line 4039 if ( (dollar=strchr(expression,'$')) /*
|
Line 5161 if ( (dollar=strchr(expression,'$')) /*
|
isdisplaystyle = 2; /* so set \displaystyle */ |
isdisplaystyle = 2; /* so set \displaystyle */ |
/*goto process_preamble;*/ /*check for preamble after leading $*/ |
/*goto process_preamble;*/ /*check for preamble after leading $*/ |
} /* --- end-of-if/else(prelen>0) --- */ |
} /* --- end-of-if/else(prelen>0) --- */ |
|
} /* --- end-of-if(dollar!=NULL) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
back to caller |
back to caller |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 4074 char *expptr=expression, /* ptr within
|
Line 5197 char *expptr=expression, /* ptr within
|
*tokptr=NULL, /*ptr to token found in expression*/ |
*tokptr=NULL, /*ptr to token found in expression*/ |
*texsubexpr(), argval[8192]; /*parse for macro args after token*/ |
*texsubexpr(), argval[8192]; /*parse for macro args after token*/ |
char *strchange(); /* change leading chars of string */ |
char *strchange(); /* change leading chars of string */ |
|
char *strwstr(); /*use strwstr() instead of strstr()*/ |
char *findbraces(); /*find left { and right } for \atop*/ |
char *findbraces(); /*find left { and right } for \atop*/ |
int idelim=0, /* left- or right-index */ |
int idelim=0, /* left- or right-index */ |
isymbol=0; /*symbols[],rightcomment[],etc index*/ |
isymbol=0; /*symbols[],rightcomment[],etc index*/ |
Line 4136 static struct { char *html; char *args;
|
Line 5260 static struct { char *html; char *args;
|
#ifdef NEWCOMMANDS /* -DNEWCOMMANDS=\"filename.h\" */ |
#ifdef NEWCOMMANDS /* -DNEWCOMMANDS=\"filename.h\" */ |
#include NEWCOMMANDS |
#include NEWCOMMANDS |
#endif |
#endif |
|
/* --------------------------------------- |
|
Cyrillic termchar mimeTeX equivalent... |
|
--------------------------------------- */ |
|
{ "\\\'G", "embed\\","{\\acute{G}}" }, |
|
{ "\\\'g", "embed\\","{\\acute{g}}" }, |
|
{ "\\\'K", "embed\\","{\\acute{K}}" }, |
|
{ "\\\'k", "embed\\","{\\acute{k}}" }, |
|
{ "\\u U", "embed\\","{\\breve{U}}" }, |
|
{ "\\u u", "embed\\","{\\breve{u}}" }, |
|
/*{ "\\\"E", "embed\\","{\\ddot{E}}" },*/ |
|
/*{ "\\\"e", "embed\\","{\\ddot{e}}" },*/ |
|
{ "\\\"I", "embed\\","{\\ddot{\\=I}}" }, |
|
{ "\\\"\\i", "embed\\","{\\ddot{\\=\\i}}" }, |
/* ------------------------------------------ |
/* ------------------------------------------ |
LaTeX Macro #args,default template... |
LaTeX Macro #args,default template... |
------------------------------------------ */ |
------------------------------------------ */ |
{ "\\lvec", "2n", "{#2_1,\\cdots,#2_{#1}}" }, |
{ "\\lvec", "2n", "{#2_1,\\cdots,#2_{#1}}" }, |
|
{ "\\grave", "1", "{\\stackrel{\\Huge\\gravesym}{#1}}" }, /* \grave */ |
|
{ "\\acute", "1", "{\\stackrel{\\Huge\\acutesym}{#1}}" }, /* \acute */ |
|
{ "\\check", "1", "{\\stackrel{\\Huge\\checksym}{#1}}" }, /* \check */ |
|
{ "\\breve", "1", "{\\stackrel{\\Huge\\brevesym}{#1}}" }, /* \breve */ |
|
{ "\\buildrel","3", "{\\stackrel{#1}{#3}}" }, /* ignore #2 = \over */ |
{ "\\overset", NULL, "\\stackrel" }, /* just an alias */ |
{ "\\overset", NULL, "\\stackrel" }, /* just an alias */ |
{ "\\underset", "2", "\\relstack{#2}{#1}" }, /* reverse args */ |
{ "\\underset", "2", "\\relstack{#2}{#1}" }, /* reverse args */ |
/* --------------------------------------- |
/* --------------------------------------- |
html termchar LaTeX equivalent... |
html char termchar LaTeX equivalent... |
--------------------------------------- */ |
--------------------------------------- */ |
{ """, ";", "\"" }, /* " is first, " */ |
{ """, ";", "\"" }, /* " is first, " */ |
{ "&", ";", "&" }, |
{ "&", ";", "&" }, |
{ "<", ";", "<" }, |
{ "<", ";", "<" }, |
{ ">", ";", ">" }, |
{ ">", ";", ">" }, |
|
{ "\", ";", "\\" }, /* backslash */ |
|
{ "&backslash",";", "\\" }, |
{ " ", ";", "~" }, |
{ " ", ";", "~" }, |
{ "¡", ";", "{\\raisebox{-2}{\\rotatebox{180}{!}}}" }, |
{ "¡", ";", "{\\raisebox{-2}{\\rotatebox{180}{!}}}" }, |
{ "¦", ";", "|" }, |
{ "¦", ";", "|" }, |
Line 4168 static struct { char *html; char *args;
|
Line 5312 static struct { char *html; char *args;
|
{ "ã", ";", "{\\rm~\\tilde~a}" }, |
{ "ã", ";", "{\\rm~\\tilde~a}" }, |
{ "ÿ", ";", "{\\rm~\\ddot~y}" }, /* ÿ is last, ÿ */ |
{ "ÿ", ";", "{\\rm~\\ddot~y}" }, /* ÿ is last, ÿ */ |
/* --------------------------------------- |
/* --------------------------------------- |
|
html tag termchar LaTeX equivalent... |
|
--------------------------------------- */ |
|
{ "<br>", "embed\\i","\\\\" }, |
|
{ "<br/>", "embed\\i","\\\\" }, |
|
/* --------------------------------------- |
|
garbage termchar LaTeX equivalent... |
|
--------------------------------------- */ |
|
{ "< TEX >", "embed\\i","\000" }, |
|
{ "< / TEX >","embed\\i","\000" }, |
|
{ "<br / >", "embed\\i","\000" }, |
|
/* --------------------------------------- |
LaTeX termchar mimeTeX equivalent... |
LaTeX termchar mimeTeX equivalent... |
--------------------------------------- */ |
--------------------------------------- */ |
{ "\\AA", NULL, "{\\rm~A\\limits^{-1$o}}" }, |
{ "\\AA", NULL, "{\\rm~A\\limits^{-1$o}}" }, |
{ "\\aa", NULL, "{\\rm~a\\limits^{-1$o}}" }, |
{ "\\aa", NULL, "{\\rm~a\\limits^{-1$o}}" }, |
{ "\\bmod", NULL, "{\\hspace2{\\rm~mod}\\hspace2}" }, |
{ "\\bmod", NULL, "{\\hspace2{\\rm~mod}\\hspace2}" }, |
{ "\\vdots", NULL, "{\\raisebox3{\\rotatebox{90}{\\ldots}}}" }, |
{ "\\vdots", NULL, "{\\raisebox3{\\rotatebox{90}{\\ldots}}}" }, |
|
{ "\\dots", NULL, "{\\cdots}" }, |
{ "\\cdots", NULL, "{\\raisebox3{\\ldots}}" }, |
{ "\\cdots", NULL, "{\\raisebox3{\\ldots}}" }, |
{ "\\ldots", NULL, "{\\fs4.\\hspace1.\\hspace1.}" }, |
{ "\\ldots", NULL, "{\\fs4.\\hspace1.\\hspace1.}" }, |
{ "\\ddots", NULL, "{\\fs4\\raisebox8.\\hspace1\\raisebox4.\\hspace1.}"}, |
{ "\\ddots", NULL, "{\\fs4\\raisebox8.\\hspace1\\raisebox4.\\hspace1.}"}, |
{ "\\notin", NULL, "{\\not\\in}" }, |
{ "\\notin", NULL, "{\\not\\in}" }, |
{ "\\neq", NULL, "{\\not=}" }, |
{ "\\neq", NULL, "{\\not=}" }, |
|
{ "\\ne", NULL, "{\\not=}" }, |
{ "\\hbar", NULL, "{\\compose~h{{\\fs{-1}-\\atop\\vspace3}}}" }, |
{ "\\hbar", NULL, "{\\compose~h{{\\fs{-1}-\\atop\\vspace3}}}" }, |
{ "\\angle", NULL, "{\\compose{\\hspace{3}\\lt}{\\circle(10,15;-80,80)}}"}, |
{ "\\angle", NULL, "{\\compose{\\hspace{3}\\lt}{\\circle(10,15;-80,80)}}"}, |
|
{ "\\textcelsius", NULL, "{\\textdegree C}"}, |
|
{ "\\textdegree", NULL, "{\\Large^{^{\\tiny\\mathbf o}}}"}, |
{ "\\cr", NULL, "\\\\" }, |
{ "\\cr", NULL, "\\\\" }, |
|
{ "\\iiint", NULL, "{\\int\\int\\int}\\limits" }, |
{ "\\iint", NULL, "{\\int\\int}\\limits" }, |
{ "\\iint", NULL, "{\\int\\int}\\limits" }, |
{ "\\Bigiint", NULL, "{\\Bigint\\Bigint}\\limits" }, |
{ "\\Bigiint", NULL, "{\\Bigint\\Bigint}\\limits" }, |
|
{ "\\bigsqcap",NULL, "{\\fs{+4}\\sqcap}" }, |
{ "!`", NULL, "{\\raisebox{-2}{\\rotatebox{180}{!}}}" }, |
{ "!`", NULL, "{\\raisebox{-2}{\\rotatebox{180}{!}}}" }, |
{ "?`", NULL, "{\\raisebox{-2}{\\rotatebox{180}{?}}}" }, |
{ "?`", NULL, "{\\raisebox{-2}{\\rotatebox{180}{?}}}" }, |
|
{ "^\'", "embed","\'" }, /* avoid ^^ when re-xlating \' below */ |
|
{ "\'\'\'\'","embed","^{\\fs{-1}\\prime\\prime\\prime\\prime}" }, |
|
{ "\'\'\'", "embed","^{\\fs{-1}\\prime\\prime\\prime}" }, |
|
{ "\'\'", "embed","^{\\fs{-1}\\prime\\prime}" }, |
|
{ "\'", "embed","^{\\fs{-1}\\prime}" }, |
{ "\\rightleftharpoons",NULL,"{\\rightharpoonup\\atop\\leftharpoondown}" }, |
{ "\\rightleftharpoons",NULL,"{\\rightharpoonup\\atop\\leftharpoondown}" }, |
|
{ "\\therefore",NULL,"{\\Huge\\raisebox{-4}{.\\atop.\\,.}}" }, |
{ "\\LaTeX", NULL, "{\\rm~L\\raisebox{3}{\\fs{-1}A}\\TeX}" }, |
{ "\\LaTeX", NULL, "{\\rm~L\\raisebox{3}{\\fs{-1}A}\\TeX}" }, |
{ "\\TeX", NULL, "{\\rm~T\\raisebox{-3}{E}X}" }, |
{ "\\TeX", NULL, "{\\rm~T\\raisebox{-3}{E}X}" }, |
{ "\\cyan", NULL, "{\\reverse\\red\\reversebg}" }, |
{ "\\cyan", NULL, "{\\reverse\\red\\reversebg}" }, |
{ "\\magenta",NULL, "{\\reverse\\green\\reversebg}" }, |
{ "\\magenta",NULL, "{\\reverse\\green\\reversebg}" }, |
{ "\\yellow",NULL, "{\\reverse\\blue\\reversebg}" }, |
{ "\\yellow",NULL, "{\\reverse\\blue\\reversebg}" }, |
|
{ "\\cancel",NULL, "\\Not" }, |
{ "\\hhline",NULL, "\\Hline" }, |
{ "\\hhline",NULL, "\\Hline" }, |
{ "\\Hline", NULL, "\\hline\\,\\\\\\hline" }, |
{ "\\Hline", NULL, "\\hline\\,\\\\\\hline" }, |
/* --------------------------------------------------------- |
/* --------------------------------------------------------- |
Line 4202 static struct { char *html; char *args;
|
Line 5370 static struct { char *html; char *args;
|
{ "cos", "1", "{\\cos{#1}}" }, |
{ "cos", "1", "{\\cos{#1}}" }, |
{ "asin", "1", "{\\sin^{-1}{#1}}" }, |
{ "asin", "1", "{\\sin^{-1}{#1}}" }, |
{ "acos", "1", "{\\cos^{-1}{#1}}" }, |
{ "acos", "1", "{\\cos^{-1}{#1}}" }, |
{ "exp", "1", "{e^{#1}}" }, |
{ "exp", "1", "{{\\rm~e}^{#1}}" }, |
{ "det", "1", "{\\left|{#1}\\right|}" }, |
{ "det", "1", "{\\left|{#1}\\right|}" }, |
/* --------------------------------------- |
/* --------------------------------------- |
LaTeX Constant termchar value... |
LaTeX Constant termchar value... |
Line 4239 while ( (leftptr=strstr(expptr,leftcomme
|
Line 5407 while ( (leftptr=strstr(expptr,leftcomme
|
expptr = leftptr+1; /*resume search after this comment*/ |
expptr = leftptr+1; /*resume search after this comment*/ |
} /* --- end-of-while(leftptr!=NULL) --- */ |
} /* --- end-of-while(leftptr!=NULL) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
convert \left( to \( and \right) to \), etc. |
|
-------------------------------------------------------------------------- */ |
|
if ( xlateleft ) /* \left...\right xlation wanted */ |
|
for ( idelim=0; idelim<2; idelim++ ) /* 0 for \left and 1 for \right */ |
|
{ |
|
char *lrstr = (idelim==0?"\\left":"\\right"); /* \left on 1st pass */ |
|
int lrlen = (idelim==0?5:6); /* strlen() of \left or \right */ |
|
char *braces = (idelim==0?LEFTBRACES ".":RIGHTBRACES "."), /*([{<or)]}>*/ |
|
**lrfrom= (idelim==0?leftfrom:rightfrom), /* long braces like \| */ |
|
**lrto = (idelim==0?leftto:rightto), /* xlated to 1-char like = */ |
|
*lrsym = NULL; /* lrfrom[isymbol] */ |
|
expptr = expression; /* start search at beginning */ |
|
while ( (tokptr=strstr(expptr,lrstr)) != NULL ) /* found \left or \right */ |
|
{ |
|
if ( isthischar(*(tokptr+lrlen),braces) ) /* followed by a 1-char brace*/ |
|
{ strcpy(tokptr+1,tokptr+lrlen); /* so squeeze out "left" or "right"*/ |
|
expptr = tokptr+2; } /* and resume search past brace */ |
|
else /* may be a "long" brace like \| */ |
|
{ |
|
expptr = tokptr+lrlen; /*init to resume search past\left\rt*/ |
|
for(isymbol=0; (lrsym=lrfrom[isymbol]) != NULL; isymbol++) |
|
{ int symlen = strlen(lrsym); /* #chars in delim, e.g., 2 for \| */ |
|
if ( memcmp(tokptr+lrlen,lrsym,symlen) == 0 ) /* found long delim*/ |
|
{ strcpy(tokptr+1,tokptr+lrlen+symlen-1); /* squeeze out delim */ |
|
*(tokptr+1) = *(lrto[isymbol]); /* last char now 1-char delim*/ |
|
expptr = tokptr+2 - lrlen; /* resume search past 1-char delim*/ |
|
break; } /* no need to check more lrsym's */ |
|
} /* --- end-of-for(isymbol) --- */ |
|
} /* --- end-of-if/else(isthischar()) --- */ |
|
} /* --- end-of-while(tokptr!=NULL) --- */ |
|
} /* --- end-of-for(idelim) --- */ |
|
/* ------------------------------------------------------------------------- |
|
run thru table, converting all occurrences of each macro to its expansion |
run thru table, converting all occurrences of each macro to its expansion |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
for(isymbol=0; (htmlsym=symbols[isymbol].html) != NULL; isymbol++) |
for(isymbol=0; (htmlsym=symbols[isymbol].html) != NULL; isymbol++) |
{ |
{ |
int htmllen = strlen(htmlsym); /* length of escape, _without_ ; */ |
int htmllen = strlen(htmlsym); /* length of escape, _without_ ; */ |
int isalgebra = isalpha((int)(*htmlsym)); /* leading char alphabetic */ |
int isalgebra = isalpha((int)(*htmlsym)); /* leading char alphabetic */ |
|
int isembedded = 0, /* true to xlate even if embedded */ |
|
isstrwstr = 0, /* true to use strwstr() */ |
|
wstrlen = 0; /* length of strwstr() match */ |
char *aleft="{([<|", *aright="})]>|"; /*left,right delims for alg syntax*/ |
char *aleft="{([<|", *aright="})]>|"; /*left,right delims for alg syntax*/ |
|
char embedkeywd[99] = "embed", /* keyword to signal embedded token*/ |
|
embedterm = '\000'; /* char immediately after embed */ |
|
int embedlen = strlen(embedkeywd); /* #chars in embedkeywd */ |
char *args = symbols[isymbol].args, /* number {}-args, optional []-arg */ |
char *args = symbols[isymbol].args, /* number {}-args, optional []-arg */ |
*htmlterm = args, /*if *args nonumeric, then html term*/ |
*htmlterm = args, /*if *args nonumeric, then html term*/ |
*latexsym = symbols[isymbol].latex; /*latex replacement for htmlsym*/ |
*latexsym = symbols[isymbol].latex; /*latex replacement for htmlsym*/ |
char abuff[8192]; int iarg,nargs=0; /* macro expansion params */ |
char abuff[8192]; int iarg,nargs=0; /* macro expansion params */ |
|
char wstrwhite[99]; /* whitespace chars for strwstr() */ |
if ( args != NULL ) /*we have args (or htmlterm) param*/ |
if ( args != NULL ) /*we have args (or htmlterm) param*/ |
if ( *args != '\000' ) /* and it's not an empty string */ |
if ( *args != '\000' ) { /* and it's not an empty string */ |
if ( strchr("0123456789",*args) != NULL ) /* is 1st char #args=0-9 ? */ |
if ( strchr("0123456789",*args) != NULL ) /* is 1st char #args=0-9 ? */ |
{ htmlterm = NULL; /* if so, then we have no htmlterm */ |
{ htmlterm = NULL; /* if so, then we have no htmlterm */ |
*abuff = *args; abuff[1] = '\000'; /* #args char in ascii buffer */ |
*abuff = *args; abuff[1] = '\000'; /* #args char in ascii buffer */ |
nargs = atoi(abuff); } /* interpret #args to numeric */ |
nargs = atoi(abuff); } /* interpret #args to numeric */ |
|
else if ( strncmp(args,embedkeywd,embedlen) == 0 )/*xlate embedded token*/ |
|
{ htmlterm = NULL; /* if so, then we have no htmlterm */ |
|
isembedded = 1 ; /* turn on embedded flag */ |
|
embedterm = args[embedlen]; /* char immediately after embed */ |
|
if (strlen(args) > embedlen+1) { /* have embed,white for strwstr() */ |
|
isstrwstr = 1; /* turn on strwtsr flag */ |
|
strcpy(wstrwhite,args+6); } } /* and set its whitespace arg */ |
|
} /* --- end-of-if(*args!='\000') --- */ |
expptr = expression; /* re-start search at beginning */ |
expptr = expression; /* re-start search at beginning */ |
while ( (tokptr=strstr(expptr,htmlsym)) != NULL ) /* found another sym */ |
while ( ( tokptr=(!isstrwstr?strstr(expptr,htmlsym): /* just use strtsr */ |
{ char termchar = *(tokptr+htmllen); /* char terminating html sequence */ |
strwstr(expptr,htmlsym,wstrwhite,&wstrlen)) ) /* or use our strwstr */ |
int escapelen = htmllen; /* total length of escape sequence */ |
!= NULL ) /* found another sym */ |
|
{ int toklen = (!isstrwstr?htmllen:wstrlen); /* length of matched sym */ |
|
char termchar = *(tokptr+toklen), /* char terminating html sequence */ |
|
prevchar = (tokptr==expptr?' ':*(tokptr-1)); /*char preceding html*/ |
|
int escapelen = toklen; /* total length of escape sequence */ |
*abuff = '\000'; /* default to empty string */ |
*abuff = '\000'; /* default to empty string */ |
if ( latexsym != NULL ) /* table has .latex xlation */ |
if ( latexsym != NULL ) /* table has .latex xlation */ |
if ( *latexsym != '\000' ) /* and it's not an empty string */ |
if ( *latexsym != '\000' ) /* and it's not an empty string */ |
strcpy(abuff,latexsym); /* so get local copy */ |
strcpy(abuff,latexsym); /* so get local copy */ |
if ( htmlterm != NULL ) /* sequence may have terminator */ |
if ( htmlterm != NULL ) /* sequence may have terminator */ |
escapelen += (isthischar(termchar,htmlterm)?1:0); /*add terminator*/ |
escapelen += (isthischar(termchar,htmlterm)?1:0); /*add terminator*/ |
if ( isalpha((int)termchar) ) /*we just have prefix of longer sym*/ |
if ( !isembedded ) /* don't xlate embedded sequence */ |
{ expptr = tokptr+htmllen; /* just resume search after prefix */ |
if ( isalpha((int)termchar) ) /*we just have prefix of longer sym*/ |
|
{ expptr = tokptr+toklen; /* just resume search after prefix */ |
continue; } /* but don't replace it */ |
continue; } /* but don't replace it */ |
|
if ( isembedded ) /* for embedded sequence */ |
|
if ( !isthischar(embedterm,ESCAPE) /* don't xlate escaped \token */ |
|
&& isthischar(prevchar,ESCAPE) ) /* and we have escaped \token */ |
|
{ expptr = tokptr+toklen; /*just resume search after literal*/ |
|
continue; } /* but don't replace it */ |
if ( !isthischar(*htmlsym,ESCAPE) /* our symbol isn't escaped */ |
if ( !isthischar(*htmlsym,ESCAPE) /* our symbol isn't escaped */ |
|
&& isalpha(*htmlsym) /* and our symbol starts with alpha*/ |
&& !isthischar(*htmlsym,"&") ) /* and not an &html; special char */ |
&& !isthischar(*htmlsym,"&") ) /* and not an &html; special char */ |
if ( tokptr != expression ) /* then if we're past beginning */ |
if ( tokptr != expression ) /* then if we're past beginning */ |
if ( isthischar(*(tokptr-1),ESCAPE) /*and if inline symbol escaped*/ |
if ( isthischar(*(tokptr-1),ESCAPE) /*and if inline symbol escaped*/ |
Line 4326 for(isymbol=0; (htmlsym=symbols[isymbol]
|
Line 5488 for(isymbol=0; (htmlsym=symbols[isymbol]
|
if ( *expptr == '[' ) /* but user gave us [argval] */ |
if ( *expptr == '[' ) /* but user gave us [argval] */ |
expptr = texsubexpr(expptr,argval,0,"[","]",0,0); } /*so get it*/ |
expptr = texsubexpr(expptr,argval,0,"[","]",0,0); } /*so get it*/ |
else /* not optional, so get {argval} */ |
else /* not optional, so get {argval} */ |
if ( *expptr != '\000' ) /* check that some argval provided */ |
if ( *expptr != '\000' ) { /* check that some argval provided */ |
if ( !isalgebra ) /* only { } delims for latex macro */ |
if ( !isalgebra ) /* only { } delims for latex macro */ |
expptr = texsubexpr(expptr,argval,0,"{","}",0,0); /*get {argval}*/ |
expptr = texsubexpr(expptr,argval,0,"{","}",0,0); /*get {argval}*/ |
else /*any delim for algebra syntax macro*/ |
else /*any delim for algebra syntax macro*/ |
Line 4334 for(isymbol=0; (htmlsym=symbols[isymbol]
|
Line 5496 for(isymbol=0; (htmlsym=symbols[isymbol]
|
if ( isthischar(*argval,aleft) ) /* have delim-enclosed arg */ |
if ( isthischar(*argval,aleft) ) /* have delim-enclosed arg */ |
if ( *argval != '{' ) /* and it's not { }-enclosed */ |
if ( *argval != '{' ) /* and it's not { }-enclosed */ |
{ strchange(0,argval,"\\left"); /* insert opening \left, */ |
{ strchange(0,argval,"\\left"); /* insert opening \left, */ |
strchange(0,argval+strlen(argval)-1,"\\right"); } /*\right*/ |
strchange(0,argval+strlen(argval)-1,"\\right"); } }/*\right*/ |
} /* --- end-of-if/else(!isalgebra) --- */ |
} /* --- end-of-if(*expptr!='\000') --- */ |
/* --- replace #`iarg` in macro with argval --- */ |
/* --- replace #`iarg` in macro with argval --- */ |
sprintf(argsignal,"#%d",iarg); /* #1...#9 signals argument */ |
sprintf(argsignal,"#%d",iarg); /* #1...#9 signals argument */ |
while ( (argsigptr=strstr(argval,argsignal)) != NULL ) /* #1...#9 */ |
while ( (argsigptr=strstr(argval,argsignal)) != NULL ) /* #1...#9 */ |
Line 4350 for(isymbol=0; (htmlsym=symbols[isymbol]
|
Line 5512 for(isymbol=0; (htmlsym=symbols[isymbol]
|
} /* --- end-of-while(tokptr!=NULL) --- */ |
} /* --- end-of-while(tokptr!=NULL) --- */ |
} /* --- end-of-for(isymbol) --- */ |
} /* --- end-of-for(isymbol) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
|
convert \left( to \( and \right) to \), etc. |
|
-------------------------------------------------------------------------- */ |
|
if ( xlateleft ) /* \left...\right xlation wanted */ |
|
for ( idelim=0; idelim<2; idelim++ ) /* 0 for \left and 1 for \right */ |
|
{ |
|
char *lrstr = (idelim==0?"\\left":"\\right"); /* \left on 1st pass */ |
|
int lrlen = (idelim==0?5:6); /* strlen() of \left or \right */ |
|
char *braces = (idelim==0?LEFTBRACES ".":RIGHTBRACES "."), /*([{<or)]}>*/ |
|
**lrfrom= (idelim==0?leftfrom:rightfrom), /* long braces like \| */ |
|
**lrto = (idelim==0?leftto:rightto), /* xlated to 1-char like = */ |
|
*lrsym = NULL; /* lrfrom[isymbol] */ |
|
expptr = expression; /* start search at beginning */ |
|
while ( (tokptr=strstr(expptr,lrstr)) != NULL ) /* found \left or \right */ |
|
{ |
|
if ( isthischar(*(tokptr+lrlen),braces) ) /* followed by a 1-char brace*/ |
|
{ strcpy(tokptr+1,tokptr+lrlen); /* so squeeze out "left" or "right"*/ |
|
expptr = tokptr+2; } /* and resume search past brace */ |
|
else /* may be a "long" brace like \| */ |
|
{ |
|
expptr = tokptr+lrlen; /*init to resume search past\left\rt*/ |
|
for(isymbol=0; (lrsym=lrfrom[isymbol]) != NULL; isymbol++) |
|
{ int symlen = strlen(lrsym); /* #chars in delim, e.g., 2 for \| */ |
|
if ( memcmp(tokptr+lrlen,lrsym,symlen) == 0 ) /* found long delim*/ |
|
{ strcpy(tokptr+1,tokptr+lrlen+symlen-1); /* squeeze out delim */ |
|
*(tokptr+1) = *(lrto[isymbol]); /* last char now 1-char delim*/ |
|
expptr = tokptr+2 - lrlen; /* resume search past 1-char delim*/ |
|
break; } /* no need to check more lrsym's */ |
|
} /* --- end-of-for(isymbol) --- */ |
|
} /* --- end-of-if/else(isthischar()) --- */ |
|
} /* --- end-of-while(tokptr!=NULL) --- */ |
|
} /* --- end-of-for(idelim) --- */ |
|
/* ------------------------------------------------------------------------- |
run thru table, converting all {a+b\atop c+d} to \atop{a+b}{c+d} |
run thru table, converting all {a+b\atop c+d} to \atop{a+b}{c+d} |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
for(isymbol=0; (atopsym=atopcommands[isymbol]) != NULL; isymbol++) |
for(isymbol=0; (atopsym=atopcommands[isymbol]) != NULL; isymbol++) |
Line 4507 return ( nreps ); /* #replacements bac
|
Line 5701 return ( nreps ); /* #replacements bac
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
* Function: strtexchr (char *string, char *texchr ) |
* Function: strwstr (char *string, char *substr, char *white, int *sublen) |
|
* Purpose: Find first substr in string, but wherever substr contains |
|
* a whitespace char (in white), string may contain any number |
|
* (including 0) of whitespace chars. If white contains I or i, |
|
* then match is case-insensitive (and I,i _not_ whitespace). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: string (I) char * to null-terminated string in which |
|
* first occurrence of substr will be found |
|
* substr (I) char * to null-terminated string containing |
|
* "template" that will be searched for |
|
* white (I) char * to null-terminated string containing |
|
* whitespace chars. If NULL or empty, then |
|
* "~ \t\n\r\f\v" (WHITEMATH in mimetex.h) used. |
|
* If white contains I or i, then match is |
|
* case-insensitive (and I,i _not_ considered |
|
* whitespace). |
|
* sublen (O) address of int returning "length" of substr |
|
* found in string (which may be longer or |
|
* shorter than substr itself). |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( char * ) ptr to first char of substr in string |
|
* or NULL if not found or for any error. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Wherever a single whitespace char appears in substr, |
|
* the corresponding position in string may contain any |
|
* number (including 0) of whitespace chars, e.g., |
|
* string="abc def" and string="abcdef" both match |
|
* substr="c d" at offset 2 of string. |
|
* o If substr="c d" (two spaces between c and d), |
|
* then string must have at least one space, so now "abcdef" |
|
* doesn't match. In general, the minimum number of spaces |
|
* in string is the number of spaces in substr minus 1 |
|
* (so 1 space in substr permits 0 spaces in string). |
|
* o Embedded spaces are counted in sublen, e.g., |
|
* string="c d" (three spaces) matches substr="c d" |
|
* with sublen=5 returned. But string="ab c d" will |
|
* also match substr=" c d" returning sublen=5 and |
|
* a ptr to the "c". That is, the mandatory preceding |
|
* space is _not_ counted as part of the match. |
|
* But all the embedded space is counted. |
|
* (An inconsistent bug/feature is that mandatory |
|
* terminating space is counted.) |
|
* o Moreover, string="c d" matches substr=" c d", i.e., |
|
* the very beginning of a string is assumed to be preceded |
|
* by "virtual blanks". |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
char *strwstr ( char *string, char *substr, char *white, int *sublen ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
char *psubstr=substr, *pstring=string,/*ptr to current char in substr,str*/ |
|
*pfound = (char *)NULL; /*ptr to found substr back to caller*/ |
|
char *pwhite=NULL, whitespace[256]; /* callers white whithout i,I */ |
|
int iscase = (white==NULL?1: /* case-sensitive if i,I in white */ |
|
strchr(white,'i')==NULL && strchr(white,'I')==NULL); |
|
int foundlen = 0; /* length of substr found in string*/ |
|
int nstrwhite=0, nsubwhite=0, /* #leading white chars in str,sub */ |
|
nminwhite=0; /* #mandatory leading white in str */ |
|
int nstrchars=0, nsubchars=0, /* #non-white chars to be matched */ |
|
isncmp=0; /*strncmp() or strncasecmp() result*/ |
|
/* ------------------------------------------------------------------------- |
|
Initialization |
|
-------------------------------------------------------------------------- */ |
|
/* --- set up whitespace --- */ |
|
strcpy(whitespace,WHITEMATH); /*default if no user input for white*/ |
|
if ( white != NULL ) /*user provided ptr to white string*/ |
|
if ( *white != '\000' ) { /*and it's not just an empty string*/ |
|
strcpy(whitespace,white); /* so use caller's white spaces */ |
|
while ( (pwhite=strchr(whitespace,'i')) != NULL ) /* have an embedded i */ |
|
strcpy(pwhite,pwhite+1); /* so squeeze it out */ |
|
while ( (pwhite=strchr(whitespace,'I')) != NULL ) /* have an embedded I */ |
|
strcpy(pwhite,pwhite+1); /* so squeeze it out */ |
|
if ( *whitespace == '\000' ) /* caller's white just had i,I */ |
|
strcpy(whitespace,WHITEMATH); } /* so revert back to default */ |
|
/* ------------------------------------------------------------------------- |
|
Find first occurrence of substr in string |
|
-------------------------------------------------------------------------- */ |
|
if ( string != NULL ) /* caller passed us a string ptr */ |
|
while ( *pstring != '\000' ) { /* break when string exhausted */ |
|
char *pstrptr = pstring; /* (re)start at next char in string*/ |
|
int leadingwhite = 0; /* leading whitespace */ |
|
psubstr = substr; /* start at beginning of substr */ |
|
foundlen = 0; /* reset length of found substr */ |
|
if ( substr != NULL ) /* caller passed us a substr ptr */ |
|
while ( *psubstr != '\000' ) { /*see if pstring begins with substr*/ |
|
/* --- check for end-of-string before finding match --- */ |
|
if ( *pstrptr == '\000' ) /* end-of-string without a match */ |
|
goto nextstrchar; /* keep trying with next char */ |
|
/* --- actual amount of whitespace in string and substr --- */ |
|
nsubwhite = strspn(psubstr,whitespace); /* #leading white chars in sub */ |
|
nstrwhite = strspn(pstrptr,whitespace); /* #leading white chars in str */ |
|
nminwhite = max2(0,nsubwhite-1); /* #mandatory leading white in str */ |
|
/* --- check for mandatory leading whitespace in string --- */ |
|
if ( pstrptr != string ) /*not mandatory at start of string*/ |
|
if ( nstrwhite < nminwhite ) /* too little leading white space */ |
|
goto nextstrchar; /* keep trying with next char */ |
|
/* ---hold on to #whitespace chars in string preceding substr match--- */ |
|
if ( pstrptr == pstring ) /* whitespace at start of substr */ |
|
leadingwhite = nstrwhite; /* save it as leadingwhite */ |
|
/* --- check for optional whitespace --- */ |
|
if ( psubstr != substr ) /* always okay at start of substr */ |
|
if ( nstrwhite>0 && nsubwhite<1 ) /* too much leading white space */ |
|
goto nextstrchar; /* keep trying with next char */ |
|
/* --- skip any leading whitespace in substr and string --- */ |
|
psubstr += nsubwhite; /* push past leading sub whitespace*/ |
|
pstrptr += nstrwhite; /* push past leading str whitespace*/ |
|
/* --- now get non-whitespace chars that we have to match --- */ |
|
nsubchars = strcspn(psubstr,whitespace); /* #non-white chars in sub */ |
|
nstrchars = strcspn(pstrptr,whitespace); /* #non-white chars in str */ |
|
if ( nstrchars < nsubchars ) /* too few chars for match */ |
|
goto nextstrchar; /* keep trying with next char */ |
|
/* --- see if next nsubchars are a match --- */ |
|
isncmp = (iscase? strncmp(pstrptr,psubstr,nsubchars): /*case sensitive*/ |
|
strncasecmp(pstrptr,psubstr,nsubchars)); /*case insensitive*/ |
|
if ( isncmp != 0 ) /* no match */ |
|
goto nextstrchar; /* keep trying with next char */ |
|
/* --- push past matched chars --- */ |
|
psubstr += nsubchars; pstrptr += nsubchars; /*nsubchars were matched*/ |
|
} /* --- end-of-while(*psubstr!='\000') --- */ |
|
pfound = pstring + leadingwhite; /* found match starting at pstring */ |
|
foundlen = (int)(pstrptr-pfound); /* consisting of this many chars */ |
|
goto end_of_job; /* back to caller */ |
|
/* ---failed to find substr, continue trying with next char in string--- */ |
|
nextstrchar: /* continue outer loop */ |
|
pstring++; /* bump to next char in string */ |
|
} /* --- end-of-while(*pstring!='\000') --- */ |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with ptr to first occurrence of substr in string |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
if ( msglevel>=999 && msgfp!=NULL) { /* debugging/diagnostic output */ |
|
fprintf(msgfp,"strwstr> str=\"%.72s\" sub=\"%s\" found at offset %d\n", |
|
string,substr,(pfound==NULL?(-1):(int)(pfound-string))); fflush(msgfp); } |
|
if ( sublen != NULL ) /*caller wants length of found substr*/ |
|
*sublen = foundlen; /* give it to him along with ptr */ |
|
return ( pfound ); /*ptr to first found substr, or NULL*/ |
|
} /* --- end-of-function strwstr() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: strtexchr ( char *string, char *texchr ) |
* Purpose: Find first texchr in string, but texchr must be followed |
* Purpose: Find first texchr in string, but texchr must be followed |
* by non-alpha |
* by non-alpha |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Arguments: string (I) char * to null-terminated string in which |
* Arguments: string (I) char * to null-terminated string in which |
* firstoccurrence of delim will be found |
* first occurrence of delim will be found |
* texchr (I) char * to null-terminated string that |
* texchr (I) char * to null-terminated string that |
* will be searched for |
* will be searched for |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 4527 char *strtexchr ( char *string, char *te
|
Line 5863 char *strtexchr ( char *string, char *te
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *strstr(), delim, *ptexchr=(char *)NULL; /* ptr returned to caller*/ |
char delim, *ptexchr=(char *)NULL; /* ptr returned to caller*/ |
char *pstring = string; /* start or continue up search here*/ |
char *pstring = string; /* start or continue up search here*/ |
int texchrlen = (texchr==NULL?0:strlen(texchr)); /* #chars in texchr */ |
int texchrlen = (texchr==NULL?0:strlen(texchr)); /* #chars in texchr */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
locate texchr in string |
locate texchr in string |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( string != (char *)NULL /* check that we got input string */ |
if ( string != (char *)NULL /* check that we got input string */ |
&& texchrlen > 0 ) /* and a texchr to search for */ |
&& texchrlen > 0 ) { /* and a texchr to search for */ |
while ( (ptexchr=strstr(pstring,texchr)) /* look for texchr in string */ |
while ( (ptexchr=strstr(pstring,texchr)) /* look for texchr in string */ |
!= (char *)NULL ) /* found it */ |
!= (char *)NULL ) /* found it */ |
if ( (delim = ptexchr[texchrlen]) /* char immediately after texchr */ |
if ( (delim = ptexchr[texchrlen]) /* char immediately after texchr */ |
Line 4544 if ( string != (char *)NULL /* check th
|
Line 5880 if ( string != (char *)NULL /* check th
|
|| 0 ) /* other tests to be determined */ |
|| 0 ) /* other tests to be determined */ |
pstring = ptexchr + texchrlen; /* continue search after texchr */ |
pstring = ptexchr + texchrlen; /* continue search after texchr */ |
else /* passed all tests */ |
else /* passed all tests */ |
break; /*so return ptr to texchr to caller*/ |
break; } /*so return ptr to texchr to caller*/ |
return ( ptexchr ); /* ptr to texchar back to caller */ |
return ( ptexchr ); /* ptr to texchar back to caller */ |
} /* --- end-of-function strtexchr() --- */ |
} /* --- end-of-function strtexchr() --- */ |
|
|
Line 4641 subraster *rasterize ( char *expression,
|
Line 5977 subraster *rasterize ( char *expression,
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *preamble(), pretext[256]; /* process preamble, if present */ |
char *preamble(), pretext[512]; /* process preamble, if present */ |
char chartoken[8192], *texsubexpr(), /*get subexpression from expression*/ |
char chartoken[MAXSUBXSZ+1], *texsubexpr(), /*get subexpression from expr*/ |
*subexpr = chartoken; /* token may be parenthesized expr */ |
*subexpr = chartoken; /* token may be parenthesized expr */ |
int isbrace(); /* check subexpr for braces */ |
int isbrace(); /* check subexpr for braces */ |
mathchardef *symdef, *get_symdef(); /*get mathchardef struct for symbol*/ |
mathchardef *symdef, *get_symdef(); /*get mathchardef struct for symbol*/ |
|
int ligdef, get_ligature(); /*get symtable[] index for ligature*/ |
int natoms=0; /* #atoms/tokens processed so far */ |
int natoms=0; /* #atoms/tokens processed so far */ |
int type_raster(); /* display debugging output */ |
int type_raster(); /* display debugging output */ |
subraster *rasterize(), /* recurse */ |
subraster *rasterize(), /* recurse */ |
Line 4658 subraster *get_charsubraster(), /* char
|
Line 5995 subraster *get_charsubraster(), /* char
|
*sp=NULL, *prevsp=NULL, /* raster for current, prev char */ |
*sp=NULL, *prevsp=NULL, /* raster for current, prev char */ |
*expraster = (subraster *)NULL; /* raster returned to caller */ |
*expraster = (subraster *)NULL; /* raster returned to caller */ |
int delete_subraster(); /* free everything before returning*/ |
int delete_subraster(); /* free everything before returning*/ |
|
int family = fontinfo[fontnum].family; /* current font family */ |
|
int isleftscript = 0, /* true if left-hand term scripted */ |
|
wasscripted = 0, /* true if preceding token scripted*/ |
|
wasdelimscript = 0; /* true if preceding delim scripted*/ |
/*int pixsz = 1;*/ /*default #bits per pixel, 1=bitmap*/ |
/*int pixsz = 1;*/ /*default #bits per pixel, 1=bitmap*/ |
/* --- global values saved/restored at each recursive iteration --- */ |
/* --- global values saved/restored at each recursive iteration --- */ |
int wastext = istext, /* initial istext mode flag */ |
int wasstring = isstring, /* initial isstring mode flag */ |
wasstring = isstring, /* initial isstring mode flag */ |
|
wasdisplaystyle = isdisplaystyle, /*initial displaystyle mode flag*/ |
wasdisplaystyle = isdisplaystyle, /*initial displaystyle mode flag*/ |
|
oldfontnum = fontnum, /* initial font family */ |
oldfontsize = fontsize, /* initial fontsize */ |
oldfontsize = fontsize, /* initial fontsize */ |
olddisplaysize = displaysize, /* initial \displaystyle size */ |
olddisplaysize = displaysize, /* initial \displaystyle size */ |
oldshrinkfactor = shrinkfactor, /* initial shrinkfactor */ |
oldshrinkfactor = shrinkfactor, /* initial shrinkfactor */ |
oldsquashmargin = squashmargin, /* initial squashmargin */ |
oldsmashmargin = smashmargin, /* initial smashmargin */ |
oldissquashdelta = issquashdelta, /* initial issquashdelta */ |
oldissmashdelta = issmashdelta, /* initial issmashdelta */ |
|
oldisexplicitsmash = isexplicitsmash, /* initial isexplicitsmash */ |
|
oldisscripted = isscripted, /* initial isscripted */ |
*oldworkingparam = workingparam; /* initial working parameter */ |
*oldworkingparam = workingparam; /* initial working parameter */ |
subraster *oldworkingbox = workingbox, /* initial working box */ |
subraster *oldworkingbox = workingbox, /* initial working box */ |
*oldleftexpression = leftexpression; /*left half rasterized so far*/ |
*oldleftexpression = leftexpression; /*left half rasterized so far*/ |
Line 4679 initialization
|
Line 6022 initialization
|
recurlevel++; /* wind up one more recursion level*/ |
recurlevel++; /* wind up one more recursion level*/ |
leftexpression = NULL; /* no leading left half yet */ |
leftexpression = NULL; /* no leading left half yet */ |
isreplaceleft = 0; /* reset replaceleft flag */ |
isreplaceleft = 0; /* reset replaceleft flag */ |
|
if(1)fraccenterline = NOVALUE; /* reset \frac baseline signal */ |
/* shrinkfactor = shrinkfactors[max2(0,min2(size,LARGESTSIZE))];*/ /*set sf*/ |
/* shrinkfactor = shrinkfactors[max2(0,min2(size,LARGESTSIZE))];*/ /*set sf*/ |
shrinkfactor = shrinkfactors[max2(0,min2(size,16))]; /* have 17 sf's */ |
shrinkfactor = shrinkfactors[max2(0,min2(size,16))]; /* have 17 sf's */ |
if ( msgfp!=NULL && msglevel >= 29 ) /*display expression for debugging*/ |
if ( msgfp!=NULL && msglevel >= 9 ) { /*display expression for debugging*/ |
{ fprintf(msgfp, |
fprintf(msgfp, |
"rasterize> recursion level=%d, size=%d,\n\texpression=\"%s\"\n", |
"rasterize> recursion#%d, size=%d,\n\texpression=\"%s\"\n", |
recurlevel,size,(expression==NULL?"null":expression)); fflush(msgfp); } |
recurlevel,size,(expression==NULL?"<null>":expression)); fflush(msgfp); } |
if ( expression == NULL ) goto end_of_job; /* nothing given to do */ |
if ( expression == NULL ) goto end_of_job; /* nothing given to do */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
preocess optional $-terminated preamble preceding expression |
preocess optional $-terminated preamble preceding expression |
Line 4700 build up raster one character (or subexp
|
Line 6044 build up raster one character (or subexp
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
while ( 1 ) |
while ( 1 ) |
{ |
{ |
|
/* --- kludge for \= cyrillic ligature --- */ |
|
isligature = 0; /* no ligature found yet */ |
|
family = fontinfo[fontnum].family; /* current font family */ |
|
if ( family == CYR10 ) /* may have cyrillic \= ligature */ |
|
if ( (ligdef = get_ligature(expression,family)) /*check for any ligature*/ |
|
>= 0 ) /* got some ligature */ |
|
if ( memcmp(symtable[ligdef].symbol,"\\=",2) == 0 ) /* starts with \= */ |
|
isligature = 1; /* signal \= ligature */ |
/* --- get next character/token or subexpression --- */ |
/* --- get next character/token or subexpression --- */ |
|
subexprptr = expression; /* ptr within expression to subexpr*/ |
expression = texsubexpr(expression,chartoken,0,LEFTBRACES,RIGHTBRACES,1,1); |
expression = texsubexpr(expression,chartoken,0,LEFTBRACES,RIGHTBRACES,1,1); |
subexpr = chartoken; /* "local" copy of chartoken ptr */ |
subexpr = chartoken; /* "local" copy of chartoken ptr */ |
leftsymdef = NULL; /* no character identified yet */ |
leftsymdef = NULL; /* no character identified yet */ |
sp = NULL; /* no subraster yet */ |
sp = NULL; /* no subraster yet */ |
size = fontsize; /* in case reset by \tiny, etc */ |
size = fontsize; /* in case reset by \tiny, etc */ |
|
/*isleftscript = isdelimscript;*/ /*was preceding term scripted delim*/ |
|
wasscripted = isscripted; /* true if preceding token scripted*/ |
|
wasdelimscript = isdelimscript; /* preceding \right delim scripted */ |
|
if(1)isscripted = 0; /* no subscripted expression yet */ |
|
isdelimscript = 0; /* reset \right delim scripted flag*/ |
/* --- debugging output --- */ |
/* --- debugging output --- */ |
if ( msgfp!=NULL && msglevel >= 999 ) /* display chartoken for debugging */ |
if ( msgfp!=NULL && msglevel >= 9 ) { /* display chartoken for debugging */ |
{ fprintf(msgfp,"rasterize> recursion level=%d, atom#%d = \"%s\"\n", |
fprintf(msgfp, |
recurlevel,natoms+1,chartoken); fflush(msgfp); } |
"rasterize> recursion#%d,atom#%d=\"%s\" (isligature=%d,isleftscript=%d)\n", |
|
recurlevel,natoms+1,chartoken,isligature,isleftscript); fflush(msgfp); } |
if ( expression == NULL /* no more tokens */ |
if ( expression == NULL /* no more tokens */ |
&& *subexpr == '\000' ) break; /* and this token empty */ |
&& *subexpr == '\000' ) break; /* and this token empty */ |
if ( *subexpr == '\000' ) break; /* enough if just this token empty */ |
if ( *subexpr == '\000' ) break; /* enough if just this token empty */ |
Line 4720 while ( 1 )
|
Line 6079 while ( 1 )
|
else /* --- single-character atomic token --- */ |
else /* --- single-character atomic token --- */ |
if ( !isthischar(*subexpr,SCRIPTS) ) /* scripts handled below */ |
if ( !isthischar(*subexpr,SCRIPTS) ) /* scripts handled below */ |
{ |
{ |
/* --- first look up mathchardef for atomic token in table --- */ |
/* --- first check for opening $ in \text{ if $n-m$ even} --- */ |
if ( (leftsymdef=symdef=get_symdef(chartoken)) /*mathchardef for token*/ |
if ( istextmode /* we're in \text mode */ |
== NULL ) /* lookup failed */ |
&& *subexpr=='$' && subexpr[1]=='\000' ) { /* and have an opening $ */ |
{ char literal[512] = "[?]"; /*display for unrecognized literal*/ |
char *endptr=NULL, mathexpr[MAXSUBXSZ+1]; /* $expression$ in \text{ }*/ |
int wastext = istext; /* error display in default mode */ |
int exprlen = 0; /* length of $expression$ */ |
if ( msgfp!=NULL && msglevel >= 29 ) /* display unrecognized symbol */ |
int textfontnum = fontnum; /* current text font number */ |
|
/*if ( (endptr=strrchr(expression,'$')) != NULL )*/ /*ptr to closing $*/ |
|
if ( (endptr=strchr(expression,'$')) != NULL ) /* ptr to closing $ */ |
|
exprlen = (int)(endptr-expression); /* #chars preceding closing $ */ |
|
else { /* no closing $ found */ |
|
exprlen = strlen(expression); /* just assume entire expression */ |
|
endptr = expression + (exprlen-1); } /*and push expression to '\000'*/ |
|
exprlen = min2(exprlen,MAXSUBXSZ); /* don't overflow mathexpr[] */ |
|
if ( exprlen > 0 ) { /* have something between $$ */ |
|
memcpy(mathexpr,expression,exprlen); /*local copy of math expression*/ |
|
mathexpr[exprlen] = '\000'; /* null-terminate it */ |
|
fontnum = 0; /* set math mode */ |
|
sp = rasterize(mathexpr,size); /* and rasterize $expression$ */ |
|
fontnum = textfontnum; } /* set back to text mode */ |
|
expression = endptr+1; /* push expression past closing $ */ |
|
} /* --- end-of-if(istextmode&&*subexpr=='$') --- */ |
|
else |
|
/* --- otherwise, look up mathchardef for atomic token in table --- */ |
|
if ( (leftsymdef=symdef=get_symdef(chartoken)) /*mathchardef for token*/ |
|
== NULL ) /* lookup failed */ |
|
{ char literal[512] = "[?]"; /*display for unrecognized literal*/ |
|
int oldfontnum = fontnum; /* error display in default mode */ |
|
if ( msgfp!=NULL && msglevel >= 29 ) /* display unrecognized symbol*/ |
{ fprintf(msgfp,"rasterize> get_symdef() failed for \"%s\"\n", |
{ fprintf(msgfp,"rasterize> get_symdef() failed for \"%s\"\n", |
chartoken); fflush(msgfp); } |
chartoken); fflush(msgfp); } |
sp = (subraster *)NULL; /* init to signal failure */ |
sp = (subraster *)NULL; /* init to signal failure */ |
if ( warninglevel < 1 ) continue; /* warnings not wanted */ |
if ( warninglevel < 1 ) continue; /* warnings not wanted */ |
istext = 0; /* reset from \mathbb, etc */ |
fontnum = 0; /* reset from \mathbb, etc */ |
if ( isthischar(*chartoken,ESCAPE) ) /* we got unrecognized \escape */ |
if ( isthischar(*chartoken,ESCAPE) ) /* we got unrecognized \escape*/ |
{ /* --- so display literal {\rm~[\backslash~chartoken?]} --- */ |
{ /* --- so display literal {\rm~[\backslash~chartoken?]} --- */ |
strcpy(literal,"{\\rm~[\\backslash~"); /* init token */ |
strcpy(literal,"{\\rm~[\\backslash~"); /* init token */ |
strcat(literal,chartoken+1); /* add chars following leading \ */ |
strcat(literal,chartoken+1); /* add chars following leading \ */ |
strcat(literal,"?]}"); } /* add closing brace */ |
strcat(literal,"?]}"); } /* add closing brace */ |
sp = rasterize(literal,size-1); /* rasterize literal token */ |
sp = rasterize(literal,size-1); /* rasterize literal token */ |
istext = wastext; /* reset text mode */ |
fontnum = oldfontnum; /* reset font family */ |
if ( sp == (subraster *)NULL ) continue; } /*flush if rasterize fails*/ |
if ( sp == (subraster *)NULL ) continue; }/*flush if rasterize fails*/ |
else /* --- check if we have special handler to process this token --- */ |
else /* --- check if we have special handler to process this token --- */ |
if ( symdef->handler != NULL ) /* have a handler for this token */ |
if ( symdef->handler != NULL ) /* have a handler for this token */ |
{ int arg1=symdef->charnum, arg2=symdef->family, arg3=symdef->class; |
{ int arg1=symdef->charnum, arg2=symdef->family, arg3=symdef->class; |
if ( (sp = (subraster *) /* returned void* is subraster* */ |
if ( (sp = (subraster *) /* returned void* is subraster* */ |
(*(symdef->handler))(&expression,size,prevsp,arg1,arg2,arg3))== NULL ) |
(*(symdef->handler))(&expression,size,prevsp,arg1,arg2,arg3))==NULL) |
continue; } /* flush token if handler failed */ |
continue; } /* flush token if handler failed */ |
else /* --- no handler, so just get subraster for this character --- */ |
else /* --- no handler, so just get subraster for this character --- */ |
if ( !isstring ) /* rasterizing */ |
if ( !isstring ) /* rasterizing */ |
{ if ( (sp=get_charsubraster(symdef,size)) /* get subraster */ |
{ if ( isligature ) /* found a ligature */ |
|
expression = subexprptr + strlen(symdef->symbol); /*push past it*/ |
|
if ( (sp=get_charsubraster(symdef,size)) /* get subraster */ |
== NULL ) continue; } /* flush token if failed */ |
== NULL ) continue; } /* flush token if failed */ |
else /* constructing ascii string */ |
else /* constructing ascii string */ |
{ char *symbol = symdef->symbol; /* symbol for ascii string */ |
{ char *symbol = symdef->symbol; /* symbol for ascii string */ |
int symlen = (symbol!=NULL?strlen(symbol):0); /*#chars in symbol*/ |
int symlen = (symbol!=NULL?strlen(symbol):0); /*#chars in symbol*/ |
if ( symlen < 1 ) continue; /* no symbol for ascii string */ |
if ( symlen < 1 ) continue; /* no symbol for ascii string */ |
Line 4760 while ( 1 )
|
Line 6143 while ( 1 )
|
sp->baseline = 1; /* default (should be unused) */ |
sp->baseline = 1; /* default (should be unused) */ |
strcpy((char *)((sp->image)->pixmap),symbol); /* copy symbol */ |
strcpy((char *)((sp->image)->pixmap),symbol); /* copy symbol */ |
/*((char *)((sp->image)->pixmap))[symlen] = '\000';*/ } /*null*/ |
/*((char *)((sp->image)->pixmap))[symlen] = '\000';*/ } /*null*/ |
} /* --- end-of-if/else ... if/else --- */ |
} /* --- end-of-if(!isthischar(*subexpr,SCRIPTS)) --- */ |
/* --- handle any super/subscripts following symbol or subexpression --- */ |
/* --- handle any super/subscripts following symbol or subexpression --- */ |
sp = rastlimits(&expression,size,sp); |
sp = rastlimits(&expression,size,sp); |
|
isleftscript = (wasscripted||wasdelimscript?1:0);/*preceding term scripted*/ |
/* --- debugging output --- */ |
/* --- debugging output --- */ |
if ( msgfp!=NULL && msglevel >= 999 ) /* display raster for debugging */ |
if ( msgfp!=NULL && msglevel >= 9 ) { /* display raster for debugging */ |
{ fprintf(msgfp,"rasterize> recursion level=%d, atom#%d%s\n", |
fprintf(msgfp,"rasterize> recursion#%d,atom#%d%s\n", |
recurlevel,natoms+1,(sp==NULL?" = null":"...")); |
recurlevel,natoms+1,(sp==NULL?" = <null>":"...")); |
if(sp!=NULL) type_raster(sp->image,msgfp); /* display raster */ |
if ( msglevel >= 9 ) fprintf(msgfp, |
fflush(msgfp); } /* flush msgfp buffer */ |
" isleftscript=%d is/wasscripted=%d,%d is/wasdelimscript=%d,%d\n", |
|
isleftscript,isscripted,wasscripted,isdelimscript,wasdelimscript); |
|
if ( msglevel >= 99 ) |
|
if(sp!=NULL) type_raster(sp->image,msgfp); /* display raster */ |
|
fflush(msgfp); } /* flush msgfp buffer */ |
/* --- accumulate atom or parenthesized subexpression --- */ |
/* --- accumulate atom or parenthesized subexpression --- */ |
if ( natoms < 1 /* nothing previous to concat */ |
if ( natoms < 1 /* nothing previous to concat */ |
|| expraster == NULL /* or previous was complete error */ |
|| expraster == NULL /* or previous was complete error */ |
|| isreplaceleft ) /* or we're replacing previous */ |
|| isreplaceleft ) /* or we're replacing previous */ |
{ expraster = subrastcpy(sp); /* so just copy static CHARASTER */ |
{ if ( 1 && expraster!=NULL ) /* probably replacing left */ |
|
delete_subraster(expraster); /* so first free original left */ |
|
expraster = subrastcpy(sp); /* copy static CHARASTER or left */ |
isreplaceleft = 0; } /* reset replacement flag */ |
isreplaceleft = 0; } /* reset replacement flag */ |
else /*we've already built up atoms so...*/ |
else /*we've already built up atoms so...*/ |
if ( sp != NULL ) /* ...if we have a new component */ |
if ( sp != NULL ) { /* ...if we have a new term */ |
expraster = rastcat(expraster,sp,1); /* concat new one, free previous */ |
int prevsmashmargin = smashmargin; /* save current smash margin */ |
|
if ( isleftscript ) { /* don't smash against scripts */ |
|
isdelimscript = 0; /* reset \right delim scripted flag*/ |
|
if ( !isexplicitsmash ) smashmargin = 0; } /* signal no smash wanted */ |
|
expraster = rastcat(expraster,sp,1); /* concat new term, free previous */ |
|
smashmargin = prevsmashmargin; } /* restore current smash margin */ |
delete_subraster(prevsp); /* free prev (if not a CHARASTER) */ |
delete_subraster(prevsp); /* free prev (if not a CHARASTER) */ |
prevsp = sp; /* current becomes previous */ |
prevsp = sp; /* current becomes previous */ |
leftexpression = expraster; /* left half rasterized so far */ |
leftexpression = expraster; /* left half rasterized so far */ |
Line 4796 end_of_job:
|
Line 6191 end_of_job:
|
if ( expraster != (subraster *)NULL ) /* i.e., if natoms>0 */ |
if ( expraster != (subraster *)NULL ) /* i.e., if natoms>0 */ |
type_raster(expraster->image,msgfp); /* display completed raster */ |
type_raster(expraster->image,msgfp); /* display completed raster */ |
fflush(msgfp); } /* flush msgfp buffer */ |
fflush(msgfp); } /* flush msgfp buffer */ |
|
/* --- set final raster buffer --- */ |
|
if ( 1 && expraster != (subraster *)NULL ) /* have an expression */ |
|
{ int type = expraster->type; /* type of constructed image */ |
|
if ( type != FRACRASTER ) /* leave \frac alone */ |
|
expraster->type = IMAGERASTER; /* set type to constructed image */ |
|
if ( istextmode ) /* but in text mode */ |
|
expraster->type = blanksignal; /* set type to avoid smash */ |
|
expraster->size = fontsize; } /* set original input font size */ |
/* --- restore flags/values to original saved values --- */ |
/* --- restore flags/values to original saved values --- */ |
istext = wastext; /* text mode reset */ |
|
isstring = wasstring; /* string mode reset */ |
isstring = wasstring; /* string mode reset */ |
isdisplaystyle = wasdisplaystyle; /* displaystyle mode reset */ |
isdisplaystyle = wasdisplaystyle; /* displaystyle mode reset */ |
|
fontnum = oldfontnum; /* font family reset */ |
fontsize = oldfontsize; /* fontsize reset */ |
fontsize = oldfontsize; /* fontsize reset */ |
displaysize = olddisplaysize; /* \displaystyle size reset */ |
displaysize = olddisplaysize; /* \displaystyle size reset */ |
shrinkfactor = oldshrinkfactor; /* shrinkfactor reset */ |
shrinkfactor = oldshrinkfactor; /* shrinkfactor reset */ |
squashmargin = oldsquashmargin; /* squashmargin reset */ |
smashmargin = oldsmashmargin; /* smashmargin reset */ |
issquashdelta = oldissquashdelta; /* issquashdelta reset */ |
issmashdelta = oldissmashdelta; /* issmashdelta reset */ |
|
isexplicitsmash = oldisexplicitsmash; /* isexplicitsmash reset */ |
|
isscripted = oldisscripted; /* isscripted reset */ |
workingparam = oldworkingparam; /* working parameter reset */ |
workingparam = oldworkingparam; /* working parameter reset */ |
workingbox = oldworkingbox; /* working box reset */ |
workingbox = oldworkingbox; /* working box reset */ |
leftexpression = oldleftexpression; /* leftexpression reset */ |
leftexpression = oldleftexpression; /* leftexpression reset */ |
Line 4812 end_of_job:
|
Line 6217 end_of_job:
|
unitlength = oldunitlength; /* unitlength reset */ |
unitlength = oldunitlength; /* unitlength reset */ |
recurlevel--; /* unwind one recursion level */ |
recurlevel--; /* unwind one recursion level */ |
/* --- return final subraster to caller --- */ |
/* --- return final subraster to caller --- */ |
if ( 1 && expraster != (subraster *)NULL ) /* have an expression */ |
|
{ expraster->type = IMAGERASTER; /* set type to constructed image */ |
|
expraster->size = fontsize; } /* set original input font size */ |
|
return ( expraster ); |
return ( expraster ); |
} /* --- end-of-function rasterize() --- */ |
} /* --- end-of-function rasterize() --- */ |
|
|
Line 4852 int explen = strlen(expression); /* tota
|
Line 6254 int explen = strlen(expression); /* tota
|
int isescape = 0, /* true if parens \escaped */ |
int isescape = 0, /* true if parens \escaped */ |
isrightdot = 0, /* true if right paren is \right. */ |
isrightdot = 0, /* true if right paren is \right. */ |
isleftdot = 0; /* true if left paren is \left. */ |
isleftdot = 0; /* true if left paren is \left. */ |
char left[16], right[16]; /* parens enclosing expresion */ |
char left[32], right[32]; /* parens enclosing expresion */ |
char noparens[8192]; /* get subexpr without parens */ |
char noparens[MAXSUBXSZ+1]; /* get subexpr without parens */ |
subraster *rasterize(), *sp=NULL; /* rasterize what's between ()'s */ |
subraster *rasterize(), *sp=NULL; /* rasterize what's between ()'s */ |
int isheight = 1; /*true=full height, false=baseline*/ |
int isheight = 1; /*true=full height, false=baseline*/ |
int height, /* height of rasterized noparens[] */ |
int height, /* height of rasterized noparens[] */ |
baseline; /* and its baseline */ |
baseline; /* and its baseline */ |
int family = CMEX10; /* family for paren chars */ |
int family = /*CMSYEX*/ CMEX10; /* family for paren chars */ |
subraster *get_delim(), *lp=NULL, *rp=NULL; /* left and right paren chars */ |
subraster *get_delim(), *lp=NULL, *rp=NULL; /* left and right paren chars */ |
subraster *rastcat(); /* concatanate subrasters */ |
subraster *rastcat(); /* concatanate subrasters */ |
int delete_subraster(); /*in case of error after allocation*/ |
int delete_subraster(); /*in case of error after allocation*/ |
Line 4950 Allocations and Declarations
|
Line 6352 Allocations and Declarations
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
subraster *rastscripts(), *rastdispmath(), /*one of these will do the work*/ |
subraster *rastscripts(), *rastdispmath(), /*one of these will do the work*/ |
*rastcat(), /* may need to concat scripts */ |
*rastcat(), /* may need to concat scripts */ |
*scriptsp = basesp; /* and this will become the result */ |
*rasterize(), /* may need to construct dummy base*/ |
|
*scriptsp = basesp, /* and this will become the result */ |
|
*dummybase = basesp; /* for {}_i construct a dummy base */ |
int isdisplay = (-1); /* set 1 for displaystyle, else 0 */ |
int isdisplay = (-1); /* set 1 for displaystyle, else 0 */ |
int oldsquashmargin = squashmargin; /* save original squashmargin */ |
int oldsmashmargin = smashmargin; /* save original smashmargin */ |
int type_raster(); /* display debugging output */ |
int type_raster(); /* display debugging output */ |
|
int delete_subraster(); /* free dummybase, if necessary */ |
|
int rastsmashcheck(); /* check if okay to smash scripts */ |
/* --- to check for \limits or \nolimits preceding scripts --- */ |
/* --- to check for \limits or \nolimits preceding scripts --- */ |
char *texchar(), *exprptr=*expression, limtoken[255]; /*check for \limits*/ |
char *texchar(), *exprptr=*expression, limtoken[255]; /*check for \limits*/ |
int toklen=0; /* strlen(limtoken) */ |
int toklen=0; /* strlen(limtoken) */ |
Line 4964 determine whether or not to use displaym
|
Line 6370 determine whether or not to use displaym
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
scriptlevel++; /* first, increment subscript level*/ |
scriptlevel++; /* first, increment subscript level*/ |
*limtoken = '\000'; /* no token yet */ |
*limtoken = '\000'; /* no token yet */ |
|
isscripted = 0; /* signal term not (text) scripted */ |
if ( msgfp!=NULL && msglevel>=999 ) |
if ( msgfp!=NULL && msglevel>=999 ) |
{ fprintf(msgfp,"rastlimits> scriptlevel#%d exprptr=%.48s\n", |
{ fprintf(msgfp,"rastlimits> scriptlevel#%d exprptr=%.48s\n", |
scriptlevel,(exprptr==NULL?"null":exprptr)); fflush(msgfp); } |
scriptlevel,(exprptr==NULL?"null":exprptr)); fflush(msgfp); } |
Line 4978 if ( *limtoken != '\000' ) /* have toke
|
Line 6385 if ( *limtoken != '\000' ) /* have toke
|
if ( memcmp("\\limits",limtoken,toklen) == 0 /* may be \limits */ |
if ( memcmp("\\limits",limtoken,toklen) == 0 /* may be \limits */ |
|| memcmp("\\nolimits",limtoken,toklen) == 0 ) /* or may be \nolimits */ |
|| memcmp("\\nolimits",limtoken,toklen) == 0 ) /* or may be \nolimits */ |
if ( (tokdef= get_symdef(limtoken)) /* look up token to be sure */ |
if ( (tokdef= get_symdef(limtoken)) /* look up token to be sure */ |
!= NULL ) /* found token in table */ |
!= NULL ) { /* found token in table */ |
if ( strcmp("\\limits",tokdef->symbol) == 0 ) /* found \limits */ |
if ( strcmp("\\limits",tokdef->symbol) == 0 ) /* found \limits */ |
isdisplay = 1; /* so explicitly set displaymath */ |
isdisplay = 1; /* so explicitly set displaymath */ |
else /* wasn't \limits */ |
else /* wasn't \limits */ |
if ( strcmp("\\nolimits",tokdef->symbol) == 0 ) /* found \nolimits */ |
if ( strcmp("\\nolimits",tokdef->symbol) == 0 ) /* found \nolimits */ |
isdisplay = 0; /* so explicitly reset displaymath */ |
isdisplay = 0; } /* so explicitly reset displaymath */ |
/* --- see if we found \[no]limits --- */ |
/* --- see if we found \[no]limits --- */ |
if ( isdisplay != (-1) ) /* explicit directive found */ |
if ( isdisplay != (-1) ) /* explicit directive found */ |
*expression = exprptr; /* so bump expression past it */ |
*expression = exprptr; /* so bump expression past it */ |
else /* noexplicit directive */ |
else /* noexplicit directive */ |
{ isdisplay = 0; /* init displaymath flag off */ |
{ isdisplay = 0; /* init displaymath flag off */ |
if ( isdisplaystyle ) /* we're in displaystyle math mode */ |
if ( isdisplaystyle ) { /* we're in displaystyle math mode */ |
if ( isdisplaystyle >= 5 ) /* and mode irrevocably forced true */ |
if ( isdisplaystyle >= 5 ) /* and mode irrevocably forced true */ |
{ if ( class!=OPENING && class!=CLOSING ) /*don't force ('s and )'s*/ |
{ if ( class!=OPENING && class!=CLOSING ) /*don't force ('s and )'s*/ |
isdisplay = 1; } /* set flag if mode forced true */ |
isdisplay = 1; } /* set flag if mode forced true */ |
Line 5002 else /* noexplicit directive */
|
Line 6409 else /* noexplicit directive */
|
isdisplay = 1; } /* set flag if mode forced true */ |
isdisplay = 1; } /* set flag if mode forced true */ |
else /* determine mode from base symbol */ |
else /* determine mode from base symbol */ |
if ( class == DISPOPER ) /* it's a displaystyle operator */ |
if ( class == DISPOPER ) /* it's a displaystyle operator */ |
isdisplay = 1; } /* so set flag */ |
isdisplay = 1; } } /* so set flag */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
dispatch call to create sub/superscripts |
dispatch call to create sub/superscripts |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( isdisplay ) /* scripts above/below base symbol */ |
if ( isdisplay ) /* scripts above/below base symbol */ |
scriptsp = rastdispmath(expression,size,basesp); /* everything all done */ |
scriptsp = rastdispmath(expression,size,basesp); /* everything all done */ |
else /* scripts alongside base symbol */ |
else { /* scripts alongside base symbol */ |
if ( (scriptsp=rastscripts(expression,size,basesp)) == NULL ) /*no scripts*/ |
if ( dummybase == NULL ) /* no base symbol preceding scripts*/ |
|
dummybase = rasterize("\\rule0{10}",size); /*guess a typical base symbol*/ |
|
issmashokay = 1; /*haven't found a no-smash char yet*/ |
|
if((scriptsp=rastscripts(expression,size,dummybase)) == NULL) /*no scripts*/ |
scriptsp = basesp; /* so just return unscripted symbol*/ |
scriptsp = basesp; /* so just return unscripted symbol*/ |
else /* symbols followed by scripts */ |
else { /* symbols followed by scripts */ |
|
isscripted = 1; /*signal current term text-scripted*/ |
if ( basesp != NULL ) /* have base symbol */ |
if ( basesp != NULL ) /* have base symbol */ |
{ squashmargin = 0; /* don't squash script */ |
{ /*if(0)smashmargin = 0;*/ /*don't smash script (doesn't work)*/ |
scriptsp = rastcat(basesp,scriptsp,2); /*concat scripts to base sym*/ |
/*scriptsp = rastcat(basesp,scriptsp,2);*//*concat scripts to base sym*/ |
scriptsp->type = IMAGERASTER; /* flip type of composite object */ |
/* --- smash (or just concat) script raster against base symbol --- */ |
scriptsp->size = size; } /* and set font size */ |
if ( !issmashokay ) /* don't smash leading - */ |
|
if ( !isexplicitsmash ) scriptsp->type = blanksignal; /*don't smash*/ |
|
scriptsp = rastcat(basesp,scriptsp,3); /*concat scripts to base sym*/ |
|
if(1) scriptsp->type = IMAGERASTER; /* flip type of composite object */ |
|
/* --- smash (or just concat) scripted term to stuff to its left --- */ |
|
issmashokay = 1; /* okay to smash base expression */ |
|
if ( 0 && smashcheck > 1 ) /* smashcheck=2 to check base */ |
|
/* note -- we _don't_ have base expression available to check */ |
|
issmashokay = rastsmashcheck(*expression); /*check if okay to smash*/ |
|
if ( !issmashokay ) /* don't smash leading - */ |
|
if ( !isexplicitsmash ) scriptsp->type = blanksignal; /*don't smash*/ |
|
scriptsp->size = size; } } } /* and set font size */ |
end_of_job: |
end_of_job: |
squashmargin = oldsquashmargin; /* reset original squashmargin */ |
smashmargin = oldsmashmargin; /* reset original smashmargin */ |
|
if ( dummybase != basesp ) delete_subraster(dummybase); /*free work area*/ |
if ( msgfp!=NULL && msglevel>=99 ) |
if ( msgfp!=NULL && msglevel>=99 ) |
{ fprintf(msgfp,"rastlimits> scriptlevel#%d returning %s\n", |
{ fprintf(msgfp,"rastlimits> scriptlevel#%d returning %s\n", |
scriptlevel,(scriptsp==NULL?"null":"...")); |
scriptlevel,(scriptsp==NULL?"null":"...")); |
Line 5077 int szval = min2(max2(size,0),LARGESTSIZ
|
Line 6500 int szval = min2(max2(size,0),LARGESTSIZ
|
/*int istweak = 1;*/ /* true to tweak script positioning */ |
/*int istweak = 1;*/ /* true to tweak script positioning */ |
int rastput(); /*put scripts in constructed raster*/ |
int rastput(); /*put scripts in constructed raster*/ |
int delete_subraster(); /* free work areas */ |
int delete_subraster(); /* free work areas */ |
|
int rastsmashcheck(); /* check if okay to smash scripts */ |
int pixsz = 1; /*default #bits per pixel, 1=bitmap*/ |
int pixsz = 1; /*default #bits per pixel, 1=bitmap*/ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Obtain subscript and/or superscript expressions, and rasterize them/it |
Obtain subscript and/or superscript expressions, and rasterize them/it |
Line 5096 issub = (subsp != (subraster *)NULL); /
|
Line 6520 issub = (subsp != (subraster *)NULL); /
|
issup = (supsp != (subraster *)NULL); /* true if we have superscript */ |
issup = (supsp != (subraster *)NULL); /* true if we have superscript */ |
isboth = (issub && issup); /* true if we have both */ |
isboth = (issub && issup); /* true if we have both */ |
if (!issub && !issup) goto end_of_job; /* quit if we have neither */ |
if (!issub && !issup) goto end_of_job; /* quit if we have neither */ |
|
/* --- check for leading no-smash chars (if enabled) --- */ |
|
issmashokay = 0; /* default, don't smash scripts */ |
|
if ( smashcheck > 0 ) { /* smash checking wanted */ |
|
issmashokay = 1; /*haven't found a no-smash char yet*/ |
|
if ( issub ) /* got a subscript */ |
|
issmashokay = rastsmashcheck(subscript); /* check if okay to smash */ |
|
if ( issmashokay ) /* clean sub, so check sup */ |
|
if ( issup ) /* got a superscript */ |
|
issmashokay = rastsmashcheck(supscript); /* check if okay to smash */ |
|
} /* --- end-of-if(smashcheck>0) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
get height, width, baseline of scripts, and height, baseline of base symbol |
get height, width, baseline of scripts, and height, baseline of base symbol |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 5136 if ( !issub ) /* we only have a super
|
Line 6570 if ( !issub ) /* we only have a super
|
supht+vabove-bdescend); /* sup's bot above base symbol bot */ |
supht+vabove-bdescend); /* sup's bot above base symbol bot */ |
baseline = height-1; } /*sup's baseline at bottom of raster*/ |
baseline = height-1; } /*sup's baseline at bottom of raster*/ |
/* --- subscript only --- */ |
/* --- subscript only --- */ |
if ( !issup ) /* we only have a subscript */ |
if ( !issup ) { /* we only have a subscript */ |
if ( subht > sdescend ) /*sub can descend below base bot...*/ |
if ( subht > sdescend ) /*sub can descend below base bot...*/ |
{ height = subht; /* ...without extra space on top */ |
{ height = subht; /* ...without extra space on top */ |
baseline = height-(sdescend+1); /* sub's bot below base symbol bot */ |
baseline = height-(sdescend+1); /* sub's bot below base symbol bot */ |
baseline = min2(baseline,max2(baseln-vbelow,0)); }/*top below base top*/ |
baseline = min2(baseline,max2(baseln-vbelow,0)); }/*top below base top*/ |
else /* sub's top will be below baseln */ |
else /* sub's top will be below baseln */ |
{ height = sdescend+1; /* sub's bot below base symbol bot */ |
{ height = sdescend+1; /* sub's bot below base symbol bot */ |
baseline = 0; } /* sub's baseline at top of raster */ |
baseline = 0; } } /* sub's baseline at top of raster */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
construct raster with superscript over subscript |
construct raster with superscript over subscript |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 5224 if (!issub && !issup) goto end_of_job; /
|
Line 6658 if (!issub && !issup) goto end_of_job; /
|
stack operator and its script(s) |
stack operator and its script(s) |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- stack superscript atop operator --- */ |
/* --- stack superscript atop operator --- */ |
if ( issup ) /* we have a superscript */ |
if ( issup ) { /* we have a superscript */ |
if ( sp == NULL ) /* but no base expression */ |
if ( sp == NULL ) /* but no base expression */ |
sp = supsp; /* so just use superscript */ |
sp = supsp; /* so just use superscript */ |
else /* have base and superscript */ |
else /* have base and superscript */ |
if ( (sp=rastack(sp,supsp,1,vspace,1,3)) /* stack supsp atop base sp */ |
if ( (sp=rastack(sp,supsp,1,vspace,1,3)) /* stack supsp atop base sp */ |
== NULL ) goto end_of_job; /* and quit if failed */ |
== NULL ) goto end_of_job; } /* and quit if failed */ |
/* --- stack operator+superscript atop subscript --- */ |
/* --- stack operator+superscript atop subscript --- */ |
if ( issub ) /* we have a subscript */ |
if ( issub ) { /* we have a subscript */ |
if ( sp == NULL ) /* but no base expression */ |
if ( sp == NULL ) /* but no base expression */ |
sp = subsp; /* so just use subscript */ |
sp = subsp; /* so just use subscript */ |
else /* have base and subscript */ |
else /* have base and subscript */ |
if ( (sp=rastack(subsp,sp,2,vspace,1,3)) /* stack sp atop base subsp */ |
if ( (sp=rastack(subsp,sp,2,vspace,1,3)) /* stack sp atop base subsp */ |
== NULL ) goto end_of_job; /* and quit if failed */ |
== NULL ) goto end_of_job; } /* and quit if failed */ |
sp->type = IMAGERASTER; /* flip type of composite object */ |
sp->type = IMAGERASTER; /* flip type of composite object */ |
sp->size = size; /* and set font size */ |
sp->size = size; /* and set font size */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 5259 end_of_job:
|
Line 6693 end_of_job:
|
* basesp (I) subraster * to character (or subexpression) |
* basesp (I) subraster * to character (or subexpression) |
* immediately preceding leading left{ |
* immediately preceding leading left{ |
* (unused, but passed for consistency) |
* (unused, but passed for consistency) |
* ildelim (I) int containing ldelims index of |
* ildelim (I) int containing ldelims[] index of |
* left delimiter |
* left delimiter |
* arg2 (I) int unused |
* arg2 (I) int unused |
* arg3 (I) int unused |
* arg3 (I) int unused |
Line 5284 int family=CMSYEX, /* get_delim() fami
|
Line 6718 int family=CMSYEX, /* get_delim() fami
|
height=0, rheight=0, /* subexpr, right delim height */ |
height=0, rheight=0, /* subexpr, right delim height */ |
margin=(size+1), /* delim height margin over subexpr*/ |
margin=(size+1), /* delim height margin over subexpr*/ |
opmargin=(5); /* extra margin for \int,\sum,\etc */ |
opmargin=(5); /* extra margin for \int,\sum,\etc */ |
char subexpr[8192]; /* chars between \left...\right */ |
char /* *texleft(),*/ subexpr[MAXSUBXSZ+1];/*chars between \left...\right*/ |
char *texchar(), /* get delims after \left,\right */ |
char *texchar(), /* get delims after \left,\right */ |
ldelim[256]=".", rdelim[256]="."; /* delims following \left,\right */ |
ldelim[256]=".", rdelim[256]="."; /* delims following \left,\right */ |
char *strtexchr(), *pleft, *pright; /*locate \right matching our \left*/ |
char *strtexchr(), *pleft, *pright; /*locate \right matching our \left*/ |
int isleftdot=0, isrightdot=0; /* true if \left. or \right. */ |
int isleftdot=0, isrightdot=0; /* true if \left. or \right. */ |
|
int isleftscript=0, isrightscript=0; /* true if delims are scripted */ |
int sublen=0; /* strlen(subexpr) */ |
int sublen=0; /* strlen(subexpr) */ |
int idelim=0; /* 1=left,2=right */ |
int idelim=0; /* 1=left,2=right */ |
|
/* int gotldelim = 0; */ /* true if ildelim given by caller */ |
int delete_subraster(); /* free subraster if rastleft fails*/ |
int delete_subraster(); /* free subraster if rastleft fails*/ |
int wasdisplaystyle = isdisplaystyle; /* save current displaystyle */ |
int wasdisplaystyle = isdisplaystyle; /* save current displaystyle */ |
|
int istextleft=0, istextright=0; /* true for non-displaystyle delims*/ |
/* --- recognized delimiters --- */ |
/* --- recognized delimiters --- */ |
static char left[16]="\\left", right[16]="\\right"; /* tex delimiters */ |
static char left[16]="\\left", right[16]="\\right"; /* tex delimiters */ |
static char *ldelims[] = { |
static char *ldelims[] = { |
Line 5329 static char *xto[] = /* ...to this ins
|
Line 6766 static char *xto[] = /* ...to this ins
|
"<", /* \langle to < */ |
"<", /* \langle to < */ |
">", /* \rangle to > */ |
">", /* \rangle to > */ |
NULL } ; /* --- end-of-xto[] --- */ |
NULL } ; /* --- end-of-xto[] --- */ |
|
/* --- non-displaystyle delimiters --- */ |
|
static char *textdelims[] = /* these delims _aren't_ display */ |
|
{ "|", "=", |
|
"(", ")", |
|
"[", "]", |
|
"<", ">", |
|
"{", "}", |
|
"dbl", /* \lbrackdbl and \rbrackdbl */ |
|
NULL } ; /* --- end-of-textdelims[] --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
initialization |
initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 5336 initialization
|
Line 6782 initialization
|
if ( *(*expression) == '\000' ) goto end_of_job; /* nothing after \left */ |
if ( *(*expression) == '\000' ) goto end_of_job; /* nothing after \left */ |
/* --- determine left delimiter, and set default \right. delimiter --- */ |
/* --- determine left delimiter, and set default \right. delimiter --- */ |
if ( ildelim!=NOVALUE && ildelim>=1 ) /* called with explicit left delim */ |
if ( ildelim!=NOVALUE && ildelim>=1 ) /* called with explicit left delim */ |
strcpy(ldelim,ldelims[ildelim]); /* so just get a local copy */ |
{ strcpy(ldelim,ldelims[ildelim]); /* so just get a local copy */ |
|
/* gotldelim = 1; */ } /* and set flag that we got it */ |
else /* trapped \left without delim */ |
else /* trapped \left without delim */ |
{ skipwhite(*expression); /* interpret \left ( as \left( */ |
{ skipwhite(*expression); /* interpret \left ( as \left( */ |
*expression = texchar(*expression,ldelim); } /*pull delim from expression*/ |
if ( *(*expression) == '\000' ) /* end-of-string after \left */ |
|
goto end_of_job; /* so return NULL */ |
|
*expression = texchar(*expression,ldelim); /*pull delim from expression*/ |
|
if ( *expression == NULL /* probably invalid end-of-string */ |
|
|| *ldelim == '\000' ) goto end_of_job; } /* no delimiter */ |
strcpy(rdelim,"."); /* init default \right. delim */ |
strcpy(rdelim,"."); /* init default \right. delim */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
locate \right balancing our opening \left |
locate \right balancing our opening \left |
Line 5364 if ( (pright=strtexchr(*expression,right
|
Line 6815 if ( (pright=strtexchr(*expression,right
|
push past \left(_a^b sub/superscripts, if present |
push past \left(_a^b sub/superscripts, if present |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
pleft = *expression; /*reset pleft after opening \left( */ |
pleft = *expression; /*reset pleft after opening \left( */ |
/*lp=*/ rastlimits(expression,size,lp); /*dummy call push expression past b*/ |
if ( (lp=rastlimits(expression,size,lp)) /*dummy call push expression past b*/ |
|
!= NULL ) /* found actual _a^b scripts, too */ |
|
{ delete_subraster(lp); /* but we don't need them */ |
|
lp = NULL; } /* reset pointer, too */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
get \right delimiter and subexpression between \left...\right, xlate delims |
get \right delimiter and subexpression between \left...\right, xlate delims |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 5384 else { /* have explicit matching \ri
|
Line 6838 else { /* have explicit matching \ri
|
/* --- get subexpression between \left...\right --- */ |
/* --- get subexpression between \left...\right --- */ |
if ( sublen < 1 ) goto end_of_job; /* nothing between delimiters */ |
if ( sublen < 1 ) goto end_of_job; /* nothing between delimiters */ |
subexpr[sublen] = '\000'; /* and null-terminate it */ |
subexpr[sublen] = '\000'; /* and null-terminate it */ |
|
/* --- adjust margin for expressions containing \middle's --- */ |
|
if ( strtexchr(subexpr,"\\middle") != NULL ) /* have enclosed \middle's */ |
|
margin = 1; /* so don't "overwhelm" them */ |
/* --- check for operator delimiter --- */ |
/* --- check for operator delimiter --- */ |
for ( idelim=0; opdelims[idelim]!=NULL; idelim++ ) |
for ( idelim=0; opdelims[idelim]!=NULL; idelim++ ) |
if ( strstr(ldelim,opdelims[idelim]) != NULL ) /* found operator */ |
if ( strstr(ldelim,opdelims[idelim]) != NULL ) /* found operator */ |
Line 5391 for ( idelim=0; opdelims[idelim]!=NULL;
|
Line 6848 for ( idelim=0; opdelims[idelim]!=NULL;
|
if ( *ldelim == '\\' ) /* have leading escape */ |
if ( *ldelim == '\\' ) /* have leading escape */ |
strcpy(ldelim,ldelim+1); /* squeeze it out */ |
strcpy(ldelim,ldelim+1); /* squeeze it out */ |
break; } /* no need to check rest of table */ |
break; } /* no need to check rest of table */ |
/* --- xlate delimiters --- */ |
/* --- xlate delimiters and check for textstyle --- */ |
for ( idelim=1; idelim<=2; idelim++ ) { /* 1=left, 2=right */ |
for ( idelim=1; idelim<=2; idelim++ ) { /* 1=left, 2=right */ |
char *lrdelim = (idelim==1? ldelim:rdelim); /* ldelim or rdelim */ |
char *lrdelim = (idelim==1? ldelim:rdelim); /* ldelim or rdelim */ |
int ix; char *xdelim; /* xfrom[] and xto[] index, delim */ |
int ix; char *xdelim; /* xfrom[] and xto[] index, delim */ |
Line 5399 for ( idelim=1; idelim<=2; idelim++ ) {
|
Line 6856 for ( idelim=1; idelim<=2; idelim++ ) {
|
if ( strcmp(lrdelim,xdelim) == 0 ) /* found delim to xlate */ |
if ( strcmp(lrdelim,xdelim) == 0 ) /* found delim to xlate */ |
{ strcpy(lrdelim,xto[ix]); /* replace with corresponding xto[]*/ |
{ strcpy(lrdelim,xto[ix]); /* replace with corresponding xto[]*/ |
break; } /* no need to check further */ |
break; } /* no need to check further */ |
|
for( ix=0; (xdelim=textdelims[ix]) != NULL; ix++ ) |
|
if ( strstr(lrdelim,xdelim) != 0 ) /* found textstyle delim */ |
|
{ if ( idelim == 1 ) /* if it's the \left one */ |
|
istextleft = 1; /* set left textstyle flag */ |
|
else istextright = 1; /* else set right textstyle flag */ |
|
break; } /* no need to check further */ |
} /* --- end-of-for(idelim) --- */ |
} /* --- end-of-for(idelim) --- */ |
/* --- debugging --- */ |
/* --- debugging --- */ |
if ( msgfp!=NULL && msglevel>=99 ) |
if ( msgfp!=NULL && msglevel>=99 ) |
Line 5419 rasterize delimiters, reset baselines, a
|
Line 6882 rasterize delimiters, reset baselines, a
|
isleftdot = (strchr(ldelim,'.')!=NULL); /* true if \left. */ |
isleftdot = (strchr(ldelim,'.')!=NULL); /* true if \left. */ |
isrightdot = (strchr(rdelim,'.')!=NULL); /* true if \right. */ |
isrightdot = (strchr(rdelim,'.')!=NULL); /* true if \right. */ |
/* --- get rasters for best-fit delim characters, add sub/superscripts --- */ |
/* --- get rasters for best-fit delim characters, add sub/superscripts --- */ |
isdisplaystyle = 9; /* force \displaystyle */ |
isdisplaystyle = (istextleft?0:9); /* force \displaystyle */ |
if ( !isleftdot ) /* if not \left. */ |
if ( !isleftdot ) /* if not \left. */ |
{ /* --- first get requested \left delimiter --- */ |
{ /* --- first get requested \left delimiter --- */ |
lp = get_delim(ldelim,rheight,family); /* get \left delim char */ |
lp = get_delim(ldelim,rheight,family); /* get \left delim char */ |
Line 5430 if ( !isleftdot ) /* if not \left. */
|
Line 6893 if ( !isleftdot ) /* if not \left. */
|
if ( lheight > rheight ) /* got bigger delim than requested */ |
if ( lheight > rheight ) /* got bigger delim than requested */ |
rheight = lheight-1; } /* make sure right delim matches */ |
rheight = lheight-1; } /* make sure right delim matches */ |
/* --- then add on any sub/superscripts attached to \left( --- */ |
/* --- then add on any sub/superscripts attached to \left( --- */ |
lp = rastlimits(&pleft,size,lp); } /*\left(_a^b and push pleft past b*/ |
lp = rastlimits(&pleft,size,lp); /*\left(_a^b and push pleft past b*/ |
isdisplaystyle = 9; /* force \displaystyle */ |
isleftscript = isscripted; } /* check if left delim scripted */ |
|
isdisplaystyle = (istextright?0:9); /* force \displaystyle */ |
if ( !isrightdot ) /* and if not \right. */ |
if ( !isrightdot ) /* and if not \right. */ |
{ /* --- first get requested \right delimiter --- */ |
{ /* --- first get requested \right delimiter --- */ |
rp = get_delim(rdelim,rheight,family); /* get \right delim char */ |
rp = get_delim(rdelim,rheight,family); /* get \right delim char */ |
Line 5439 if ( !isrightdot ) /* and if not \righ
|
Line 6903 if ( !isrightdot ) /* and if not \righ
|
if ( rp != NULL ) /* if get_delim() succeeded */ |
if ( rp != NULL ) /* if get_delim() succeeded */ |
rp->baseline = sp->baseline + ((rp->image)->height - height)/2; |
rp->baseline = sp->baseline + ((rp->image)->height - height)/2; |
/* --- then add on any sub/superscripts attached to \right) --- */ |
/* --- then add on any sub/superscripts attached to \right) --- */ |
rp = rastlimits(expression,size,rp); } /*\right)_c^d, expression past d*/ |
rp = rastlimits(expression,size,rp); /*\right)_c^d, expression past d*/ |
|
isrightscript = isscripted; } /* check if right delim scripted */ |
isdisplaystyle = wasdisplaystyle; /* original \displystyle default */ |
isdisplaystyle = wasdisplaystyle; /* original \displystyle default */ |
/* --- check that we got delimiters --- */ |
/* --- check that we got delimiters --- */ |
if ( 0 ) |
if ( 0 ) |
Line 5461 if ( sp != NULL ) /* succeeded or igno
|
Line 6926 if ( sp != NULL ) /* succeeded or igno
|
sp = rastcat(sp,rp,3); /* concat sp||rp and free sp,rp */ |
sp = rastcat(sp,rp,3); /* concat sp||rp and free sp,rp */ |
/* --- back to caller --- */ |
/* --- back to caller --- */ |
end_of_job: |
end_of_job: |
|
isdelimscript = isrightscript; /* signal if right delim scripted */ |
return ( sp ); |
return ( sp ); |
} /* --- end-of-function rastleft() --- */ |
} /* --- end-of-function rastleft() --- */ |
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: rastright ( expression, size, basesp, ildelim, arg2, arg3 ) |
|
* Purpose: ...\right handler, intercepts an unexpected/unbalanced \right |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I) char ** to first char of null-terminated |
|
* string beginning with a \right |
|
* to be rasterized |
|
* size (I) int containing 0-5 default font size |
|
* basesp (I) subraster * to character (or subexpression) |
|
* immediately preceding leading left{ |
|
* (unused, but passed for consistency) |
|
* ildelim (I) int containing rdelims[] index of |
|
* right delimiter |
|
* arg2 (I) int unused |
|
* arg3 (I) int unused |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( subraster * ) ptr to subraster corresponding to subexpr, |
|
* or NULL for any parsing error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
subraster *rastright ( char **expression, int size, subraster *basesp, |
|
int ildelim, int arg2, int arg3 ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
subraster /* *rasterize(),*/ *sp=NULL; /*rasterize \right subexpr's*/ |
|
if ( sp != NULL ) /* returning entire expression */ |
|
{ |
|
isreplaceleft = 1; /* set flag to replace left half*/ |
|
} |
|
return ( sp ); |
|
} /* --- end-of-function rastright() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: rastmiddle ( expression, size, basesp, arg1, arg2, arg3 ) |
|
* Purpose: \middle handler, returns subraster corresponding to |
|
* entire expression with \middle delimiter(s) sized to fit. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I/O) char ** to first char of null-terminated |
|
* string immediately following \middle to be |
|
* rasterized, and returning ptr immediately |
|
* to terminating null. |
|
* size (I) int containing 0-5 default font size |
|
* basesp (I) subraster * to character (or subexpression) |
|
* immediately preceding \middle |
|
* (unused, but passed for consistency) |
|
* arg1 (I) int unused |
|
* arg2 (I) int unused |
|
* arg3 (I) int unused |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( subraster * ) ptr to subraster corresponding to expression, |
|
* or NULL for any parsing error |
|
* (expression ptr unchanged if error occurs) |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
subraster *rastmiddle ( char **expression, int size, subraster *basesp, |
|
int arg1, int arg2, int arg3 ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
subraster *rasterize(), *sp=NULL, *subsp[32]; /*rasterize \middle subexpr's*/ |
|
char *exprptr = *expression, /* local copy of ptr to expression */ |
|
*texchar(), delim[32][132], /* delimiters following \middle's */ |
|
*strtexchr(), /* locate \middle's */ |
|
subexpr[MAXSUBXSZ+1], *subptr=NULL;/*subexpression between \middle's*/ |
|
int height=0, habove=0, hbelow=0; /* height, above & below baseline */ |
|
int idelim, ndelims=0, /* \middle count (max 32) */ |
|
family = CMSYEX; /* delims from CMSY10 or CMEX10 */ |
|
subraster *subrastcpy(), /* copy subraster */ |
|
*rastcat(), /* concatanate subraster */ |
|
*get_delim(); /* get rasterized delimiter */ |
|
int delete_subraster(); /* free work area subsp[]'s at eoj */ |
|
/* ------------------------------------------------------------------------- |
|
initialization |
|
-------------------------------------------------------------------------- */ |
|
subsp[0] = leftexpression; /* expressn preceding 1st \middle */ |
|
subsp[1] = NULL; /* set first null */ |
|
/* ------------------------------------------------------------------------- |
|
accumulate subrasters between consecutive \middle\delim...\middle\delim...'s |
|
-------------------------------------------------------------------------- */ |
|
while ( ndelims < 30 ) /* max of 31 \middle's */ |
|
{ |
|
/* --- maintain max height above,below baseline --- */ |
|
if ( subsp[ndelims] != NULL ) /*exprssn preceding current \middle*/ |
|
{ int baseline = (subsp[ndelims])->baseline; /* #rows above baseline */ |
|
height = ((subsp[ndelims])->image)->height; /* tot #rows (height) */ |
|
habove = max2(habove,baseline); /* max #rows above baseline */ |
|
hbelow = max2(hbelow,height-baseline); } /* max #rows below baseline */ |
|
/* --- get delimter after \middle --- */ |
|
skipwhite(exprptr); /*skip space betwn \middle & \delim*/ |
|
exprptr = texchar(exprptr,delim[ndelims]); /* \delim after \middle */ |
|
if ( *(delim[ndelims]) == '\000' ) /* \middle at end-of-expression */ |
|
break; /* ignore it and consider job done */ |
|
ndelims++; /* count another \middle\delim */ |
|
/* --- get subexpression between \delim and next \middle --- */ |
|
subsp[ndelims] = NULL; /* no subexpresion yet */ |
|
if ( *exprptr == '\000' ) /* end-of-expression after \delim */ |
|
break; /* so we have all subexpressions */ |
|
if ( (subptr = strtexchr(exprptr,"\\middle")) /* find next \middle */ |
|
== NULL ) /* no more \middle's */ |
|
{ strncpy(subexpr,exprptr,MAXSUBXSZ); /*get entire remaining expression*/ |
|
subexpr[MAXSUBXSZ] = '\000'; /* make sure it's null-terminated */ |
|
exprptr += strlen(exprptr); } /* push exprptr to terminating '\0'*/ |
|
else /* have another \middle */ |
|
{ int sublen = (int)(subptr-exprptr); /* #chars between \delim...\middle*/ |
|
memcpy(subexpr,exprptr,min2(sublen,MAXSUBXSZ)); /* get subexpression */ |
|
subexpr[min2(sublen,MAXSUBXSZ)] = '\000'; /* and null-terminate it */ |
|
exprptr += (sublen+strlen("\\middle")); } /* push exprptr past \middle*/ |
|
/* --- rasterize subexpression --- */ |
|
subsp[ndelims] = rasterize(subexpr,size); /* rasterize subexpresion */ |
|
} /* --- end-of-while(1) --- */ |
|
/* ------------------------------------------------------------------------- |
|
construct \middle\delim's and concatanate them between subexpressions |
|
-------------------------------------------------------------------------- */ |
|
if ( ndelims < 1 /* no delims */ |
|
|| (height=habove+hbelow) < 1 ) /* or no subexpressions? */ |
|
goto end_of_job; /* just flush \middle directive */ |
|
for ( idelim=0; idelim<=ndelims; idelim++ ) |
|
{ |
|
/* --- first add on subexpression preceding delim --- */ |
|
if ( subsp[idelim] != NULL ) { /* have subexpr preceding delim */ |
|
if ( sp == NULL ) /* this is first piece */ |
|
{ sp = subsp[idelim]; /* so just use it */ |
|
if ( idelim == 0 ) sp = subrastcpy(sp); } /* or copy leftexpression */ |
|
else sp = rastcat(sp,subsp[idelim],(idelim>0?3:1)); } /* or concat it */ |
|
/* --- now construct delimiter --- */ |
|
if ( *(delim[idelim]) != '\000' ) /* have delimter */ |
|
{ subraster *delimsp = get_delim(delim[idelim],height,family); |
|
if ( delimsp != NULL ) /* rasterized delim */ |
|
{ delimsp->baseline = habove; /* set baseline */ |
|
if ( sp == NULL ) /* this is first piece */ |
|
sp = delimsp; /* so just use it */ |
|
else sp = rastcat(sp,delimsp,3); } } /*or concat to existing pieces*/ |
|
} /* --- end-of-for(idelim) --- */ |
|
/* --- back to caller --- */ |
|
end_of_job: |
|
if ( 0 ) /* now handled above */ |
|
for ( idelim=1; idelim<=ndelims; idelim++ ) /* free subsp[]'s (not 0) */ |
|
if ( subsp[idelim] != NULL ) /* have allocated subraster */ |
|
delete_subraster(subsp[idelim]); /* so free it */ |
|
if ( sp != NULL ) /* returning entire expression */ |
|
{ int newht = (sp->image)->height; /* height of returned subraster */ |
|
sp->baseline = min2(newht-1,newht/2+5); /* guess new baseline */ |
|
isreplaceleft = 1; /* set flag to replace left half*/ |
|
*expression += strlen(*expression); } /* and push to terminating null*/ |
|
return ( sp ); |
|
} /* --- end-of-function rastmiddle() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: rastflags ( expression, size, basesp, flag, value, arg3 ) |
* Function: rastflags ( expression, size, basesp, flag, value, arg3 ) |
* Purpose: sets an internal flag, e.g., for \rm, or sets an internal |
* Purpose: sets an internal flag, e.g., for \rm, or sets an internal |
* value, e.g., for \unitlength=<value>, and returns NULL |
* value, e.g., for \unitlength=<value>, and returns NULL |
Line 5476 end_of_job:
|
Line 7098 end_of_job:
|
* size (I) int containing base font size (not used, |
* size (I) int containing base font size (not used, |
* just stored in subraster) |
* just stored in subraster) |
* basesp (I) subraster * to character (or subexpression) |
* basesp (I) subraster * to character (or subexpression) |
* immediately preceding space, whose baseline |
* immediately preceding "flags" directive |
* and height params are transferred to space |
* (unused but passed for consistency) |
* flag (I) int containing #define'd symbol specifying |
* flag (I) int containing #define'd symbol specifying |
* internal flag to be set |
* internal flag to be set |
* value (I) int containing new value of flag |
* value (I) int containing new value of flag |
Line 5499 char *texsubexpr(), /* parse expressio
|
Line 7121 char *texsubexpr(), /* parse expressio
|
int argvalue=NOVALUE, /* atoi(valuearg) */ |
int argvalue=NOVALUE, /* atoi(valuearg) */ |
isdelta=0, /* true if + or - precedes valuearg */ |
isdelta=0, /* true if + or - precedes valuearg */ |
valuelen=0; /* strlen(valuearg) */ |
valuelen=0; /* strlen(valuearg) */ |
double strtod(); /*convert ascii {valuearg} to double*/ |
double dblvalue=(-99.), strtod(); /*convert ascii {valuearg} to double*/ |
static int displaystylelevel = (-99); /* \displaystyle set at recurlevel */ |
static int displaystylelevel = (-99); /* \displaystyle set at recurlevel */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
set flag or value |
set flag or value |
Line 5507 set flag or value
|
Line 7129 set flag or value
|
switch ( flag ) |
switch ( flag ) |
{ |
{ |
default: break; /* unrecognized flag */ |
default: break; /* unrecognized flag */ |
case ISTEXT: |
case ISFONTFAM: |
if ( isthischar((*(*expression)),WHITEMATH) ) /* \rm followed by white */ |
if ( isthischar((*(*expression)),WHITEMATH) ) /* \rm followed by white */ |
(*expression)++; /* skip leading ~ after \rm */ |
(*expression)++; /* skip leading ~ after \rm */ |
istext=value; /* set text mode */ |
fontnum = value; /* set font family */ |
break; |
break; |
case ISSTRING: isstring=value; break; /* set string/image mode */ |
case ISSTRING: isstring=value; break; /* set string/image mode */ |
case ISDISPLAYSTYLE: /* set \displaystyle mode */ |
case ISDISPLAYSTYLE: /* set \displaystyle mode */ |
Line 5524 switch ( flag )
|
Line 7146 switch ( flag )
|
{ bgred=255-bgred; bggreen=255-bggreen; bgblue=255-bgblue; } |
{ bgred=255-bgred; bggreen=255-bggreen; bgblue=255-bgblue; } |
if ( value==2 || value==NOVALUE ) |
if ( value==2 || value==NOVALUE ) |
isblackonwhite = !isblackonwhite; |
isblackonwhite = !isblackonwhite; |
|
if ( gammacorrection > 0.0001 ) /* have gamma correction */ |
|
gammacorrection = REVERSEGAMMA; /* use reverse video gamma instead */ |
break; |
break; |
case ISSUPER: /* set supersampling/lowpass flag */ |
case ISSUPER: /* set supersampling/lowpass flag */ |
#ifndef SSFONTS /* don't have ss fonts loaded */ |
#ifndef SSFONTS /* don't have ss fonts loaded */ |
Line 5534 switch ( flag )
|
Line 7158 switch ( flag )
|
break; |
break; |
case ISFONTSIZE: /* set fontsize */ |
case ISFONTSIZE: /* set fontsize */ |
case ISDISPLAYSIZE: /* set displaysize */ |
case ISDISPLAYSIZE: /* set displaysize */ |
|
case ISCONTENTTYPE: /*enable/disable content-type lines*/ |
case ISSHRINK: /* set shrinkfactor */ |
case ISSHRINK: /* set shrinkfactor */ |
case ISAAALGORITHM: /* set anti-aliasing algorithm */ |
case ISAAALGORITHM: /* set anti-aliasing algorithm */ |
case ISWEIGHT: /* set font weight */ |
case ISWEIGHT: /* set font weight */ |
Line 5541 switch ( flag )
|
Line 7166 switch ( flag )
|
case ISADJACENTWT: /* set lowpass adjacent weight */ |
case ISADJACENTWT: /* set lowpass adjacent weight */ |
case ISCORNERWT: /* set lowpass corner weight */ |
case ISCORNERWT: /* set lowpass corner weight */ |
case ISCOLOR: /* set red(1),green(2),blue(3) */ |
case ISCOLOR: /* set red(1),green(2),blue(3) */ |
case ISSQUASH: /* set (minimum) "squash" margin */ |
case ISSMASH: /* set (minimum) "smash" margin */ |
|
case ISGAMMA: /* set gamma correction */ |
if ( value != NOVALUE ) /* passed a fixed value to be set */ |
if ( value != NOVALUE ) /* passed a fixed value to be set */ |
argvalue = value; /* set given fixed value */ |
{ argvalue = value; /* set given fixed int value */ |
|
dblvalue = (double)value; } /* or maybe interpreted as double */ |
else /* get value from expression */ |
else /* get value from expression */ |
{ *expression = texsubexpr(*expression,valuearg,1023,"{","}",0,0); |
{ *expression = texsubexpr(*expression,valuearg,1023,"{","}",0,0); |
if ( *valuearg != '\000' ) /* guard against empty string */ |
if ( *valuearg != '\000' ) /* guard against empty string */ |
Line 5552 switch ( flag )
|
Line 7179 switch ( flag )
|
{ isdelta = isthischar(*valuearg,"+-"); /* leading + or - */ |
{ isdelta = isthischar(*valuearg,"+-"); /* leading + or - */ |
if ( memcmp(valuearg,"--",2) == 0 ) /* leading -- signals...*/ |
if ( memcmp(valuearg,"--",2) == 0 ) /* leading -- signals...*/ |
{ isdelta=0; strcpy(valuearg,valuearg+1); } /* ...not delta */ |
{ isdelta=0; strcpy(valuearg,valuearg+1); } /* ...not delta */ |
argvalue = atoi(valuearg); } } /* convert to int */ |
switch ( flag ) { /* convert to double or int */ |
|
default: argvalue = atoi(valuearg); break; /* convert to int */ |
|
case ISGAMMA: |
|
dblvalue = strtod(valuearg,NULL); break; } /* or to double */ |
|
} /* --- end-of-if(*valuearg!='?') --- */ |
|
} /* --- end-of-if(value==NOVALUE) --- */ |
switch ( flag ) |
switch ( flag ) |
{ |
{ |
default: break; |
default: break; |
Line 5578 switch ( flag )
|
Line 7210 switch ( flag )
|
fontsize = (isdelta? fontsize+argvalue : argvalue); |
fontsize = (isdelta? fontsize+argvalue : argvalue); |
fontsize = max2(0,min2(fontsize,largestsize)); |
fontsize = max2(0,min2(fontsize,largestsize)); |
shrinkfactor = shrinkfactors[fontsize]; |
shrinkfactor = shrinkfactors[fontsize]; |
if ( isdisplaystyle == 1 ) /* displaystyle enabled but not set*/ |
if ( isdisplaystyle == 1 /* displaystyle enabled but not set*/ |
|
|| (1 && isdisplaystyle==2) /* displaystyle enabled and set */ |
|
|| (0 && isdisplaystyle==0) )/*\textstyle disabled displaystyle*/ |
if ( displaystylelevel != recurlevel ) /*respect \displaystyle*/ |
if ( displaystylelevel != recurlevel ) /*respect \displaystyle*/ |
if ( !ispreambledollars ) /* respect $$...$$'s */ |
if ( !ispreambledollars ) { /* respect $$...$$'s */ |
isdisplaystyle = (fontsize>=displaysize? 2:1); /* forced */ |
if ( fontsize >= displaysize ) |
|
isdisplaystyle = 2; /* forced */ |
|
else isdisplaystyle = 1; } |
/*displaystylelevel = (-99);*/ } /* reset \displaystyle level */ |
/*displaystylelevel = (-99);*/ } /* reset \displaystyle level */ |
else /* embed font size in expression */ |
else /* embed font size in expression */ |
{ sprintf(valuearg,"%d",fontsize); /* convert size */ |
{ sprintf(valuearg,"%d",fontsize); /* convert size */ |
Line 5594 switch ( flag )
|
Line 7230 switch ( flag )
|
if ( argvalue != NOVALUE ) /* got a value */ |
if ( argvalue != NOVALUE ) /* got a value */ |
displaysize = (isdelta? displaysize+argvalue : argvalue); |
displaysize = (isdelta? displaysize+argvalue : argvalue); |
break; |
break; |
case ISSQUASH: /* set (minimum) "squash" margin */ |
case ISCONTENTTYPE: /*enable/disable content-type lines*/ |
if ( argvalue != NOVALUE ) /* got a value */ |
if ( argvalue != NOVALUE ) /* got a value */ |
{ squashmargin = argvalue; /* set value */ |
isemitcontenttype = (argvalue>0?1:0); |
|
break; |
|
case ISSMASH: /* set (minimum) "smash" margin */ |
|
if ( argvalue != NOVALUE ) /* got a value */ |
|
{ smashmargin = argvalue; /* set value */ |
if ( arg3 != NOVALUE ) isdelta=arg3; /* hard-coded isdelta */ |
if ( arg3 != NOVALUE ) isdelta=arg3; /* hard-coded isdelta */ |
issquashdelta = (isdelta?1:0); } /* and set delta flag */ |
issmashdelta = (isdelta?1:0); } /* and set delta flag */ |
squashmargin = max2((isdelta?-5:0),min2(squashmargin,32)); /*sanity*/ |
smashmargin = max2((isdelta?-5:0),min2(smashmargin,32)); /*sanity*/ |
|
isexplicitsmash = 1; /* signal explicit \smash directive*/ |
break; |
break; |
case ISSHRINK: /* set shrinkfactor */ |
case ISSHRINK: /* set shrinkfactor */ |
if ( argvalue != NOVALUE ) /* got a value */ |
if ( argvalue != NOVALUE ) /* got a value */ |
Line 5607 switch ( flag )
|
Line 7248 switch ( flag )
|
shrinkfactor = max2(1,min2(shrinkfactor,27)); /* sanity check */ |
shrinkfactor = max2(1,min2(shrinkfactor,27)); /* sanity check */ |
break; |
break; |
case ISAAALGORITHM: /* set anti-aliasing algorithm */ |
case ISAAALGORITHM: /* set anti-aliasing algorithm */ |
if ( argvalue != NOVALUE ) /* got a value */ |
if ( argvalue != NOVALUE ) { /* got a value */ |
aaalgorithm = argvalue; /* set algorithm number */ |
if ( argvalue >= 0 ) { /* non-negative to set algorithm */ |
aaalgorithm = max2(0,min2(aaalgorithm,3)); /* bounds check */ |
aaalgorithm = argvalue; /* set algorithm number */ |
|
aaalgorithm = max2(0,min2(aaalgorithm,4)); } /* bounds check */ |
|
else maxfollow = abs(argvalue); } /* or maxfollow=abs(negative#) */ |
break; |
break; |
case ISWEIGHT: /* set font weight number */ |
case ISWEIGHT: /* set font weight number */ |
value = (argvalue==NOVALUE? NOVALUE : /* don't have a value */ |
value = (argvalue==NOVALUE? NOVALUE : /* don't have a value */ |
Line 5638 switch ( flag )
|
Line 7281 switch ( flag )
|
if ( argvalue != NOVALUE ) /* got a value */ |
if ( argvalue != NOVALUE ) /* got a value */ |
cornerwt = argvalue; /* set lowpass corner weight */ |
cornerwt = argvalue; /* set lowpass corner weight */ |
break; |
break; |
|
case ISGAMMA: /* set gamma correction */ |
|
if ( dblvalue >= 0.0 ) /* got a value */ |
|
gammacorrection = dblvalue; /* set gamma correction */ |
|
break; |
} /* --- end-of-switch() --- */ |
} /* --- end-of-switch() --- */ |
break; |
break; |
case PNMPARAMS: /*set fgalias,fgonly,bgalias,bgonly*/ |
case PNMPARAMS: /*set fgalias,fgonly,bgalias,bgonly*/ |
Line 5680 return ( NULL ); /*just set value, not
|
Line 7327 return ( NULL ); /*just set value, not
|
* width (I) int containing #bits/pixels for space width |
* width (I) int containing #bits/pixels for space width |
* isfill (I) int containing true to \hfill complete |
* isfill (I) int containing true to \hfill complete |
* expression out to width |
* expression out to width |
|
* (Kludge: isfill=99 signals \hspace* |
|
* for negative space) |
* isheight (I) int containing true (but not NOVALUE) |
* isheight (I) int containing true (but not NOVALUE) |
* to treat width arg as height |
* to treat width arg as height |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 5696 subraster *rastspace ( char **expression
|
Line 7345 subraster *rastspace ( char **expression
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
subraster *new_subraster(), *spacesp=NULL; /* subraster for space */ |
subraster *new_subraster(), *spacesp=NULL; /* subraster for space */ |
|
raster *bp=NULL, *backspace_raster(); /* for negative space */ |
|
int delete_subraster(); /* if fail, free unneeded subraster*/ |
int baseht=1, baseln=0; /* height,baseline of base symbol */ |
int baseht=1, baseln=0; /* height,baseline of base symbol */ |
int pixsz = 1; /*default #bits per pixel, 1=bitmap*/ |
int pixsz = 1; /*default #bits per pixel, 1=bitmap*/ |
|
int isstar=0, minspace=0; /* defaults for negative hspace */ |
char *texsubexpr(), widtharg[256]; /* parse for optional {width} */ |
char *texsubexpr(), widtharg[256]; /* parse for optional {width} */ |
subraster *rasterize(), *rightsp=NULL; /*rasterize right half of expression*/ |
subraster *rasterize(), *rightsp=NULL; /*rasterize right half of expression*/ |
subraster *rastcat(); /* cat rightsp after \hfill */ |
subraster *rastcat(); /* cat rightsp after \hfill */ |
int blanksignal = (-991234); /*rastsquash signal right-hand blank*/ |
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
initialization |
initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
|
if ( isfill > 1 ) { isstar=1; isfill=0; } /* large fill signals \hspace* */ |
if ( isfill == NOVALUE ) isfill=0; /* novalue means false */ |
if ( isfill == NOVALUE ) isfill=0; /* novalue means false */ |
if ( isheight == NOVALUE ) isheight=0; /* novalue means false */ |
if ( isheight == NOVALUE ) isheight=0; /* novalue means false */ |
|
minspace = (isstar?(-1):0); /* reset default minspace */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
determine width if not given (e.g., \hspace{width}, \hfill{width}) |
determine width if not given (e.g., \hspace{width}, \hfill{width}) |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( width <= 0 ) /* width specified in expression */ |
if ( width == 0 ) { /* width specified in expression */ |
{ int widthval; /* test {width} before using it */ |
double dwidth; int widthval; /* test {width} before using it */ |
width = 1; /* set default width */ |
int minwidth = (isfill||isheight?1:-600); /* \hspace allows negative */ |
*expression = texsubexpr(*expression,widtharg,255,"{","}",0,0); |
/* --- check if optional [minspace] given for negative \hspace --- */ |
widthval = /* convert {width} to integer */ |
if ( *(*expression) == '[' ) { /* [minspace] if leading char is [ */ |
(int)((unitlength*strtod(widtharg,NULL))+0.5); |
/* ---parse [minspace], bump expression past it, interpret as double--- */ |
if ( widthval>=2 && widthval<=600 ) /* sanity check */ |
*expression = texsubexpr(*expression,widtharg,127,"[","]",0,0); |
width = widthval; } /* replace deafault width */ |
if ( *widtharg != '\000' ) /* got [minspace] */ |
|
minspace = iround(unitlength*strtod(widtharg,NULL)); /* in pixels */ |
|
} /* --- end-of-if(*(*expression)=='[') --- */ |
|
width = 1; /* set default width */ |
|
*expression = texsubexpr(*expression,widtharg,255,"{","}",0,0); |
|
dwidth = unitlength*strtod(widtharg,NULL); /* scaled width value */ |
|
widthval = /* convert {width} to integer */ |
|
(int)( dwidth + (dwidth>=0.0?0.5:(-0.5)) ); |
|
if ( widthval>=minwidth && widthval<=600 ) /* sanity check */ |
|
width = widthval; /* replace deafault width */ |
|
} /* --- end-of-if(width==0) --- */ |
|
/* ------------------------------------------------------------------------- |
|
first check for negative space |
|
-------------------------------------------------------------------------- */ |
|
if ( width < 0 ) { /* have negative hspace */ |
|
if ( leftexpression != (subraster *)NULL ) /* can't backspace */ |
|
if ( (spacesp=new_subraster(0,0,0)) /* get new subraster for backspace */ |
|
!= NULL ) { /* and if we succeed... */ |
|
int nback=(-width), pback; /*#pixels wanted,actually backspaced*/ |
|
if ( (bp=backspace_raster(leftexpression->image,nback,&pback,minspace,0)) |
|
!= NULL ) { /* and if backspace succeeds... */ |
|
spacesp->image = bp; /* save backspaced image */ |
|
/*spacesp->type = leftexpression->type;*/ /* copy original type */ |
|
spacesp->type = blanksignal; /* need to propagate blanks */ |
|
spacesp->size = leftexpression->size; /* copy original font size */ |
|
spacesp->baseline = leftexpression->baseline; /* and baseline */ |
|
blanksymspace += -(nback-pback); /* wanted more than we got */ |
|
isreplaceleft = 1; } /*signal to replace entire expressn*/ |
|
else { /* backspace failed */ |
|
delete_subraster(spacesp); /* free unneeded envelope */ |
|
spacesp = (subraster *)NULL; } } /* and signal failure */ |
|
goto end_of_job; |
|
} /* --- end-of-if(width<0) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
see if width is "absolute" or fill width |
see if width is "absolute" or fill width |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 5745 if ( width > 0 ) /*make sure we have p
|
Line 7430 if ( width > 0 ) /*make sure we have p
|
!= NULL ) /* and if we succeed... */ |
!= NULL ) /* and if we succeed... */ |
{ /* --- ...re-init subraster parameters --- */ |
{ /* --- ...re-init subraster parameters --- */ |
spacesp->size = size; /*propagate base font size forward*/ |
spacesp->size = size; /*propagate base font size forward*/ |
|
if(1)spacesp->type = blanksignal; /* need to propagate blanks (???) */ |
spacesp->baseline = baseln; } /* ditto baseline */ |
spacesp->baseline = baseln; } /* ditto baseline */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
concat right half if \hfill-ing |
concat right half if \hfill-ing |
Line 5754 if ( rightsp != NULL ) /* we have a ri
|
Line 7440 if ( rightsp != NULL ) /* we have a ri
|
rastcat(spacesp,rightsp,3)); /* or cat right half after space */ |
rastcat(spacesp,rightsp,3)); /* or cat right half after space */ |
spacesp->type = blanksignal; /* need to propagate blanks */ |
spacesp->type = blanksignal; /* need to propagate blanks */ |
*expression += strlen((*expression)); } /* push expression to its null */ |
*expression += strlen((*expression)); } /* push expression to its null */ |
return ( spacesp ); |
end_of_job: |
|
return ( spacesp ); |
} /* --- end-of-function rastspace() --- */ |
} /* --- end-of-function rastspace() --- */ |
|
|
|
|
Line 5767 return ( spacesp );
|
Line 7454 return ( spacesp );
|
* string immediately following \\ to be |
* string immediately following \\ to be |
* rasterized, and returning ptr immediately |
* rasterized, and returning ptr immediately |
* to terminating null. |
* to terminating null. |
* size (I) int containing 0-4 default font size |
* size (I) int containing 0-5 default font size |
* basesp (I) subraster * to character (or subexpression) |
* basesp (I) subraster * to character (or subexpression) |
* immediately preceding \accent |
* immediately preceding \\ |
* (unused, but passed for consistency) |
* (unused, but passed for consistency) |
* arg1 (I) int unused |
* arg1 (I) int unused |
* arg2 (I) int unused |
* arg2 (I) int unused |
Line 5812 rasterize right half of expression and s
|
Line 7499 rasterize right half of expression and s
|
if ( (rightsp=rasterize(*expression,size)) /* rasterize right half */ |
if ( (rightsp=rasterize(*expression,size)) /* rasterize right half */ |
== NULL ) goto end_of_job; /* quit if failed */ |
== NULL ) goto end_of_job; /* quit if failed */ |
/* --- stack left half above it --- */ |
/* --- stack left half above it --- */ |
newlsp = rastack(rightsp,leftexpression,1,vspace,0,3); /*right under left*/ |
/*newlsp = rastack(rightsp,leftexpression,1,vspace,0,3);*//*right under left*/ |
|
newlsp = rastack(rightsp,leftexpression,1,vspace,0,1); /*right under left*/ |
/* --- back to caller --- */ |
/* --- back to caller --- */ |
end_of_job: |
end_of_job: |
if ( newlsp != NULL ) /* returning entire expression */ |
if ( newlsp != NULL ) /* returning entire expression */ |
Line 6156 subraster *rastfrac ( char **expression,
|
Line 7844 subraster *rastfrac ( char **expression,
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), /*parse expression for numer,denom*/ |
char *texsubexpr(), /*parse expression for numer,denom*/ |
numer[8192], denom[8192]; /*numer,denom parsed from expression*/ |
numer[MAXSUBXSZ+1], denom[MAXSUBXSZ+1]; /* parsed numer, denom */ |
subraster *rasterize(), *numsp=NULL, *densp=NULL; /*rasterize numer, denom*/ |
subraster *rasterize(), *numsp=NULL, *densp=NULL; /*rasterize numer, denom*/ |
subraster *rastack(), *fracsp=NULL; /* subraster for numer/denom */ |
subraster *rastack(), *fracsp=NULL; /* subraster for numer/denom */ |
subraster *new_subraster()/*, *spacesp=NULL*/; /* space for num or den */ |
subraster *new_subraster()/*, *spacesp=NULL*/; /* space for num or den */ |
Line 6166 int baseht=0, baseln=0; /* height,basel
|
Line 7854 int baseht=0, baseln=0; /* height,basel
|
/*int istweak = 1;*/ /*true to tweak baseline alignment*/ |
/*int istweak = 1;*/ /*true to tweak baseline alignment*/ |
int rule_raster(), /* draw horizontal line for frac */ |
int rule_raster(), /* draw horizontal line for frac */ |
lineheight = 1; /* thickness of fraction line */ |
lineheight = 1; /* thickness of fraction line */ |
int vspace = 1; /*vertical space between components*/ |
int vspace = (size>2?2:1); /*vertical space between components*/ |
int delete_subraster(); /*free work areas in case of error*/ |
int delete_subraster(); /*free work areas in case of error*/ |
int type_raster(); /* display debugging output */ |
int type_raster(); /* display debugging output */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 6213 width = (fracsp->image)->width; /*just
|
Line 7901 width = (fracsp->image)->width; /*just
|
/* --- initialize subraster parameters --- */ |
/* --- initialize subraster parameters --- */ |
fracsp->size = size; /* propagate font size forward */ |
fracsp->size = size; /* propagate font size forward */ |
fracsp->baseline = (numheight+vspace+lineheight)+(size+2);/*default baseline*/ |
fracsp->baseline = (numheight+vspace+lineheight)+(size+2);/*default baseline*/ |
|
fracsp->type = FRACRASTER; /* signal \frac image */ |
if ( basesp != (subraster *)NULL ) /* we have base symbol for frac */ |
if ( basesp != (subraster *)NULL ) /* we have base symbol for frac */ |
{ baseht = (basesp->image)->height; /* height of base symbol */ |
{ baseht = (basesp->image)->height; /* height of base symbol */ |
baseln = basesp->baseline; /* and its baseline */ |
baseln = basesp->baseline; /* and its baseline */ |
Line 6220 if ( basesp != (subraster *)NULL ) /* we
|
Line 7909 if ( basesp != (subraster *)NULL ) /* we
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
draw horizontal line between numerator and denominator |
draw horizontal line between numerator and denominator |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
|
fraccenterline = numheight+vspace; /* signal that we have a \frac */ |
if ( isfrac ) /*line for \frac, but not for \atop*/ |
if ( isfrac ) /*line for \frac, but not for \atop*/ |
rule_raster(fracsp->image,numheight+vspace,0,width,lineheight,0); |
rule_raster(fracsp->image,fraccenterline,0,width,lineheight,0); |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
return final result to caller |
return final result to caller |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 6264 subraster *rastackrel ( char **expressio
|
Line 7954 subraster *rastackrel ( char **expressio
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), /*parse expression for numer,denom*/ |
char *texsubexpr(), /*parse expression for upper,lower*/ |
upper[8192], lower[8192]; /*upper,lower parsed from expression*/ |
upper[MAXSUBXSZ+1], lower[MAXSUBXSZ+1]; /* parsed upper, lower */ |
subraster *rasterize(), *upsp=NULL, *lowsp=NULL; /* rasterize upper, lower */ |
subraster *rasterize(), *upsp=NULL, *lowsp=NULL; /* rasterize upper, lower */ |
subraster *rastack(), *relsp=NULL; /* subraster for upper/lower */ |
subraster *rastack(), *relsp=NULL; /* subraster for upper/lower */ |
int upsize = (base==1? size:size-1), /* font size for upper component */ |
int upsize = (base==1? size:size-1), /* font size for upper component */ |
Line 6337 subraster *rastmathfunc ( char **express
|
Line 8027 subraster *rastmathfunc ( char **express
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texscripts(), /* parse expression for _limits */ |
char *texscripts(), /* parse expression for _limits */ |
func[4096], limits[8192]; /* func as {\rm func}, limits */ |
func[MAXTOKNSZ+1], limits[MAXSUBXSZ+1]; /*func as {\rm func}, limits*/ |
char *texsubexpr(), /* parse expression for arg */ |
char *texsubexpr(), /* parse expression for arg */ |
funcarg[2048]; /* optional func arg */ |
funcarg[MAXTOKNSZ+1]; /* optional func arg */ |
subraster *rasterize(), *funcsp=NULL, *limsp=NULL; /*rasterize func,limits*/ |
subraster *rasterize(), *funcsp=NULL, *limsp=NULL; /*rasterize func,limits*/ |
subraster *rastack(), *mathfuncsp=NULL; /* subraster for mathfunc/limits */ |
subraster *rastack(), *mathfuncsp=NULL; /* subraster for mathfunc/limits */ |
int limsize = size-1; /* font size for limits */ |
int limsize = size-1; /* font size for limits */ |
Line 6443 subraster *rastsqrt ( char **expression,
|
Line 8133 subraster *rastsqrt ( char **expression,
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), subexpr[8192], /* parse subexpr to be sqrt-ed */ |
char *texsubexpr(), subexpr[MAXSUBXSZ+1], /*parse subexpr to be sqrt-ed*/ |
rootarg[8192]; /* optional \sqrt[rootarg]{...} */ |
rootarg[MAXSUBXSZ+1]; /* optional \sqrt[rootarg]{...} */ |
subraster *rasterize(), *subsp=NULL; /* rasterize subexpr */ |
subraster *rasterize(), *subsp=NULL; /* rasterize subexpr */ |
subraster *accent_subraster(), *sqrtsp=NULL, /* subraster with the sqrt */ |
subraster *accent_subraster(), *sqrtsp=NULL, /* subraster with the sqrt */ |
*new_subraster(), *rootsp=NULL; /* optionally preceded by [rootarg]*/ |
*new_subraster(), *rootsp=NULL; /* optionally preceded by [rootarg]*/ |
Line 6559 subraster *rastaccent ( char **expressio
|
Line 8249 subraster *rastaccent ( char **expressio
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), subexpr[8192]; /* parse subexpr to be accented */ |
char *texsubexpr(), subexpr[MAXSUBXSZ+1]; /*parse subexpr to be accented*/ |
char *texscripts(), *script=NULL, /* \under,overbrace allow scripts */ |
char *texscripts(), *script=NULL, /* \under,overbrace allow scripts */ |
subscript[512], supscript[512]; /* scripts parsed from expression */ |
subscript[MAXTOKNSZ+1], supscript[MAXTOKNSZ+1]; /* parsed scripts */ |
subraster *rasterize(), *subsp=NULL, *scrsp=NULL; /*rasterize subexpr,script*/ |
subraster *rasterize(), *subsp=NULL, *scrsp=NULL; /*rasterize subexpr,script*/ |
subraster *rastack(), *accsubsp=NULL; /* stack accent, subexpr, script */ |
subraster *rastack(), *accsubsp=NULL; /* stack accent, subexpr, script */ |
subraster *accent_subraster(), *accsp=NULL; /*raster for the accent itself*/ |
subraster *accent_subraster(), *accsp=NULL; /*raster for the accent itself*/ |
Line 6588 subwidth = (subsp->image)->width; /* an
|
Line 8278 subwidth = (subsp->image)->width; /* an
|
pixsz = (subsp->image)->pixsz; /* original pixsz remains constant */ |
pixsz = (subsp->image)->pixsz; /* original pixsz remains constant */ |
/* --- determine desired width, height of accent --- */ |
/* --- determine desired width, height of accent --- */ |
accwidth = subwidth; /* same width as subexpr */ |
accwidth = subwidth; /* same width as subexpr */ |
accheight = 3; /* default for bars */ |
accheight = 4; /* default for bars */ |
switch ( accent ) |
switch ( accent ) |
{ default: break; /* default okay */ |
{ default: break; /* default okay */ |
case DOTACCENT: case DDOTACCENT: |
case DOTACCENT: case DDOTACCENT: |
accheight = (size<3? 3:4); /* default for dots */ |
accheight = (size<4? 3:4); /* default for dots */ |
break; |
break; |
case HATACCENT: case VECACCENT: |
case VECACCENT: |
|
vspace = 1; /* set 1-pixel vertical space */ |
|
case HATACCENT: |
accheight = 7; /* default */ |
accheight = 7; /* default */ |
if ( subwidth < 10 ) accheight = 5; /* unless small width */ |
if ( subwidth < 10 ) accheight = 5; /* unless small width */ |
else if ( subwidth > 25 ) accheight = 9; /* or large */ |
else if ( subwidth > 25 ) accheight = 9; /* or large */ |
Line 6640 end_of_job:
|
Line 8332 end_of_job:
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
* Function: rastfont (expression,size,basesp,font,arg2,arg3) |
* Function: rastfont (expression,size,basesp,ifontnum,arg2,arg3) |
* Purpose: \cal{}, \scr{}, \etc handler, returns subraster corresponding |
* Purpose: \cal{}, \scr{}, \etc handler, returns subraster corresponding |
* to char(s) within {}'s rendered at size |
* to char(s) within {}'s rendered at size |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 6652 end_of_job:
|
Line 8344 end_of_job:
|
* basesp (I) subraster * to character (or subexpression) |
* basesp (I) subraster * to character (or subexpression) |
* immediately preceding \accent |
* immediately preceding \accent |
* (unused, but passed for consistency) |
* (unused, but passed for consistency) |
* font (I) int containing 1 for \cal{}, 2 for \scr{} |
* ifontnum (I) int containing 1 for \cal{}, 2 for \scr{} |
* arg2 (I) int unused |
* arg2 (I) int unused |
* arg3 (I) int unused |
* arg3 (I) int unused |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 6663 end_of_job:
|
Line 8355 end_of_job:
|
* ======================================================================= */ |
* ======================================================================= */ |
/* --- entry point --- */ |
/* --- entry point --- */ |
subraster *rastfont ( char **expression, int size, subraster *basesp, |
subraster *rastfont ( char **expression, int size, subraster *basesp, |
int font, int arg2, int arg3 ) |
int ifontnum, int arg2, int arg3 ) |
{ |
{ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), fontchars[8192], /*parse chars to be rendered in font*/ |
char *texsubexpr(), fontchars[MAXSUBXSZ+1], /* chars to render in font */ |
subexpr[8192]; /* turn \cal{AB} into \calA\calB */ |
subexpr[MAXSUBXSZ+1]; /* turn \cal{AB} into \calA\calB */ |
char *pfchars=fontchars, fchar='\0'; /* run thru fontchars one at a time*/ |
char *pfchars=fontchars, fchar='\0'; /* run thru fontchars one at a time*/ |
char *name = NULL; /* fonts[font].name */ |
char *name = NULL; /* fontinfo[ifontnum].name */ |
int class = 0, /* fonts[font].class */ |
int family = 0, /* fontinfo[ifontnum].family */ |
istext = 0; /* set true for text type */ |
istext = 0, /* fontinfo[ifontnum].istext */ |
|
class = 0; /* fontinfo[ifontnum].class */ |
subraster *rasterize(), *fontsp=NULL, /* rasterize chars in font */ |
subraster *rasterize(), *fontsp=NULL, /* rasterize chars in font */ |
*rastflags(); /* or just set flag to switch font */ |
*rastflags(); /* or just set flag to switch font */ |
int oldsquashmargin = squashmargin; /* turn off squash in text mode */ |
int oldsmashmargin = smashmargin; /* turn off smash in text mode */ |
int blanksignal = (-991234); /*rastsquash signal right-hand blank*/ |
#if 0 |
/* --- fonts recognized by rastfont --- */ |
/* --- fonts recognized by rastfont --- */ |
static int nfonts = 5; /* legal font #'s are 1...nfonts */ |
static int nfonts = 6; /* legal font #'s are 1...nfonts */ |
static struct {char *name; int class;} |
static struct {char *name; int class;} |
fonts[] = |
fonts[] = |
{ /* --- name class 1=upper,2=alpha,3=alnum,4=lower,5=digit,9=all --- */ |
{ /* --- name class 1=upper,2=alpha,3=alnum,4=lower,5=digit,9=all --- */ |
{ "\\badfont", 0 }, |
{ "\\math", 0 }, |
{ "\\cal", 1 }, /*(1) calligraphic, uppercase */ |
{ "\\mathcal", 1 }, /*(1) calligraphic, uppercase */ |
{ "\\scr", 1 }, /*(2) rsfs/script, uppercase */ |
{ "\\mathscr", 1 }, /*(2) rsfs/script, uppercase */ |
{ "\\rm", -1 }, /*(3) \rm,\text{abc} --> {\rm~abc} */ |
{ "\\textrm", -1 }, /*(3) \rm,\text{abc} --> {\rm~abc} */ |
{ "\\it", -1 }, /*(4) \it,\textit{abc}-->{\it~abc} */ |
{ "\\textit", -1 }, /*(4) \it,\textit{abc}-->{\it~abc} */ |
{ "\\bb", -1 }, /*(5) \bb,\mathbb{abc}-->{\bb~abc} */ |
{ "\\mathbb", -1 }, /*(5) \bb,\mathbb{abc}-->{\bb~abc} */ |
|
{ "\\mathbf", -1 }, /*(6) \bf,\mathbf{abc}-->{\bf~abc} */ |
|
{ "\\mathrm", -1 }, /*(7) \mathrm */ |
|
{ "\\cyr", -1 }, /*(8) \cyr */ |
{ NULL, 0 } |
{ NULL, 0 } |
} ; /* --- end-of-fonts[] --- */ |
} ; /* --- end-of-fonts[] --- */ |
|
#endif |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
first get font name and class to determine type of conversion desired |
first get font name and class to determine type of conversion desired |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( font<=0 || font>nfonts ) font=0; /* set error if out-of-bounds */ |
if (ifontnum<=0 || ifontnum>nfontinfo) ifontnum=0; /*math if out-of-bounds*/ |
name = fonts[font].name; /* font name */ |
name = fontinfo[ifontnum].name; /* font name */ |
class = fonts[font].class; /* font class */ |
family = fontinfo[ifontnum].family; /* font family */ |
if ( font==3 || font==4 ) /* text (respect blanks) */ |
istext = fontinfo[ifontnum].istext; /*true in text mode (respect space)*/ |
{ istext = 1; /* signal text mode */ |
class = fontinfo[ifontnum].class; /* font class */ |
squashmargin = 0; } /* don't squash internal blanks */ |
if ( istext ) /* text (respect blanks) */ |
|
{ mathsmashmargin = smashmargin; /* needed for \text{if $n-m$ even} */ |
|
smashmargin = 0; } /* don't smash internal blanks */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
now convert \font{abc} --> {\font~abc}, or convert ABC to \calA\calB\calC |
now convert \font{abc} --> {\font~abc}, or convert ABC to \calA\calB\calC |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( class < 0 ) /* not character-by-character */ |
if ( 1 || class<0 ) /* not character-by-character */ |
{ |
{ |
/* --- |
/* --- |
if \font not immediately followed by { then it has no arg, so just set flag |
if \font not immediately followed by { then it has no arg, so just set flag |
Line 6711 if ( class < 0 ) /* not character-by-c
|
Line 8410 if ( class < 0 ) /* not character-by-c
|
if ( *(*expression) != '{' ) /* no \font arg, so just set flag */ |
if ( *(*expression) != '{' ) /* no \font arg, so just set flag */ |
{ |
{ |
if ( msgfp!=NULL && msglevel>=99 ) |
if ( msgfp!=NULL && msglevel>=99 ) |
fprintf(msgfp,"rastfont> \\%s rastflags() for font#%d\n",name,font); |
fprintf(msgfp,"rastfont> \\%s rastflags() for font#%d\n",name,ifontnum); |
switch ( font ) /* set flag by our internal font# */ |
fontsp = rastflags(expression,size,basesp,ISFONTFAM,ifontnum,arg3); |
{ case 3: /* \rm, \text sets flag istext=1 */ |
|
fontsp = rastflags(expression,size,basesp,ISTEXT,1,arg3); break; |
|
case 4: /* \it, \text sets flag istext=2 */ |
|
fontsp = rastflags(expression,size,basesp,ISTEXT,2,arg3); break; |
|
case 5: /* \bb, \mathbb sets flag istext=3 */ |
|
fontsp = rastflags(expression,size,basesp,ISTEXT,3,arg3); break; |
|
default: break; } /* unrecognized, set no flags */ |
|
goto end_of_job; |
goto end_of_job; |
} /* --- end-of-if(*(*expression)!='{') --- */ |
} /* --- end-of-if(*(*expression)!='{') --- */ |
/* --- |
/* --- |
Line 6752 else /* character-by-character */
|
Line 8444 else /* character-by-character */
|
for ( pfchars=fontchars; (fchar= *pfchars)!='\000'; pfchars++ ) |
for ( pfchars=fontchars; (fchar= *pfchars)!='\000'; pfchars++ ) |
{ |
{ |
if ( isthischar(fchar,WHITEMATH) ) /* some whitespace */ |
if ( isthischar(fchar,WHITEMATH) ) /* some whitespace */ |
{ if ( 0 || istext ) /* and we're in a text mode */ |
{ if ( 0 || istext ) /* and we're in a text mode font */ |
strcat(subexpr,"\\;"); } /* so respect whitespace */ |
strcat(subexpr,"\\;"); } /* so respect whitespace */ |
else /* char to be displayed in font */ |
else /* char to be displayed in font */ |
{ int exprlen = 0; /* #chars in subexpr before fchar */ |
{ int exprlen = 0; /* #chars in subexpr before fchar */ |
int isinclass = 0; /* set true if fchar in font class */ |
int isinclass = 0; /* set true if fchar in font class */ |
|
/* --- class: 1=upper, 2=alpha, 3=alnum, 4=lower, 5=digit, 9=all --- */ |
switch ( class ) /* check if fchar is in font class */ |
switch ( class ) /* check if fchar is in font class */ |
{ default: break; /* no chars in unrecognized class */ |
{ default: break; /* no chars in unrecognized class */ |
case 1: if ( isupper((int)fchar) ) isinclass=1; break; |
case 1: if ( isupper((int)fchar) ) isinclass=1; break; |
Line 6790 if ( (fontsp = rasterize(subexpr,size))
|
Line 8483 if ( (fontsp = rasterize(subexpr,size))
|
back to caller with chars rendered in font |
back to caller with chars rendered in font |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
end_of_job: |
end_of_job: |
squashmargin = oldsquashmargin; /* restore squash */ |
smashmargin = oldsmashmargin; /* restore smash */ |
if ( istext && fontsp!=NULL ) /* raster contains text */ |
mathsmashmargin = SMASHMARGIN; /* this one probably not necessary */ |
fontsp->type = blanksignal; /* signal nosquash */ |
if ( istext && fontsp!=NULL ) /* raster contains text mode font */ |
|
fontsp->type = blanksignal; /* signal nosmash */ |
return ( fontsp ); /* chars rendered in font */ |
return ( fontsp ); /* chars rendered in font */ |
} /* --- end-of-function rastfont() --- */ |
} /* --- end-of-function rastfont() --- */ |
|
|
Line 6827 subraster *rastbegin ( char **expression
|
Line 8521 subraster *rastbegin ( char **expression
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), subexpr[8210], /* \begin{} environment paramaters */ |
char *texsubexpr(), subexpr[MAXSUBXSZ+1], /* \begin{} environment params*/ |
*exprptr=NULL,*begptr=NULL,*endptr=NULL,*braceptr=NULL; /* ptrs */ |
*exprptr=NULL,*begptr=NULL,*endptr=NULL,*braceptr=NULL; /* ptrs */ |
char *begtoken="\\begin{", *endtoken="\\end{"; /*tokens we're looking for*/ |
char *begtoken="\\begin{", *endtoken="\\end{"; /*tokens we're looking for*/ |
int strreplace(); /* replace substring in string */ |
int strreplace(); /* replace substring in string */ |
Line 6840 int envlen=0, sublen=0; /* #chars in en
|
Line 8534 int envlen=0, sublen=0; /* #chars in en
|
static int blevel = 0; /* \begin...\end nesting level */ |
static int blevel = 0; /* \begin...\end nesting level */ |
static char *mdelims[] = { NULL, NULL, NULL, NULL, |
static char *mdelims[] = { NULL, NULL, NULL, NULL, |
"()","[]","{}","||","==", /* for pbBvVmatrix */ |
"()","[]","{}","||","==", /* for pbBvVmatrix */ |
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
NULL, NULL, NULL, NULL, "{.", NULL, NULL, NULL, NULL, NULL, NULL, |
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; |
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }; |
static char *environs[] = { /* types of environments we process*/ |
static char *environs[] = { /* types of environments we process*/ |
"eqnarray", /* 0 eqnarray environment */ |
"eqnarray", /* 0 eqnarray environment */ |
Line 6856 static char *environs[] = { /* types of
|
Line 8550 static char *environs[] = { /* types of
|
"align", /* 10 align environment */ |
"align", /* 10 align environment */ |
"verbatim", /* 11 verbatim environment */ |
"verbatim", /* 11 verbatim environment */ |
"picture", /* 12 picture environment */ |
"picture", /* 12 picture environment */ |
|
"cases", /* 13 cases environment */ |
|
"equation", /* 14 for \begin{equation} */ |
NULL }; /* trailer */ |
NULL }; /* trailer */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
determine type of environment we're beginning |
determine type of environment we're beginning |
Line 6917 switch ( ienviron )
|
Line 8613 switch ( ienviron )
|
if ( *(subexpr+8) == '\000' ) goto end_of_job; } /* quit if no arg */ |
if ( *(subexpr+8) == '\000' ) goto end_of_job; } /* quit if no arg */ |
strcat(subexpr,"{"); /* opening { after (width,height) */ |
strcat(subexpr,"{"); /* opening { after (width,height) */ |
break; |
break; |
|
case 13: /* cases */ |
|
strcat(subexpr,"\\array{ll$"); /* a&b \\ c&d etc */ |
|
break; |
|
case 14: /* \begin{equation} */ |
|
strcat(subexpr,"{"); /* just enclose expression in {}'s */ |
|
break; |
} /* --- end-of-switch(ienviron) --- */ |
} /* --- end-of-switch(ienviron) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
locate matching \end{...} |
locate matching \end{...} |
Line 7064 subraster *rastarray ( char **expression
|
Line 8766 subraster *rastarray ( char **expression
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), subexpr[8210], *exprptr, /* parse array subexpr */ |
char *texsubexpr(), subexpr[MAXSUBXSZ+1], *exprptr, /*parse array subexpr*/ |
subtok[4096], *subptr=subtok, /* & or \\ inside { }'s not a delim*/ |
subtok[MAXTOKNSZ+1], *subptr=subtok, /* &,\\ inside { } not a delim*/ |
token[4096], *tokptr=token, /* token from subexpr to rasterize */ |
token[MAXTOKNSZ+1], *tokptr=token, /* subexpr token to rasterize */ |
*preamble(), *preptr=token; /*process optional size,lcr preamble*/ |
*preamble(), *preptr=token; /*process optional size,lcr preamble*/ |
char *coldelim="&", *rowdelim="\\"; /* need escaped rowdelim */ |
char *coldelim="&", *rowdelim="\\"; /* need escaped rowdelim */ |
int maxarraysz = 64; /* max #rows, cols */ |
int maxarraysz = 64; /* max #rows, cols */ |
Line 7213 while ( *preptr != '\000' ) /* check p
|
Line 8915 while ( *preptr != '\000' ) /* check p
|
if ( prepcase != 0 ) /* only check upper,lowercase */ |
if ( prepcase != 0 ) /* only check upper,lowercase */ |
{ |
{ |
int ispropagate = (*preptr=='+'?1:0); /* leading + propagates width/ht */ |
int ispropagate = (*preptr=='+'?1:0); /* leading + propagates width/ht */ |
if ( ispropagate ) /* set row or col propagation */ |
if ( ispropagate ) { /* set row or col propagation */ |
if ( prepcase == 1 ) colpropagate = 1; /* propagating col values */ |
if ( prepcase == 1 ) colpropagate = 1; /* propagating col values */ |
else if ( prepcase == 2 ) rowpropagate = 1; /* propagating row values */ |
else if ( prepcase == 2 ) rowpropagate = 1; } /*propagating row values*/ |
if ( !colpropagate && prepcase == 1 ) |
if ( !colpropagate && prepcase == 1 ) |
{ colwidth[icol] = 0; /* reset colwidth */ |
{ colwidth[icol] = 0; /* reset colwidth */ |
fixcolsize[icol] = 0; } /* reset width flag */ |
fixcolsize[icol] = 0; } /* reset width flag */ |
Line 7319 while ( 1 ) /* scan chars till end */
|
Line 9021 while ( 1 ) /* scan chars till end */
|
tokptr=token; skipwhite(tokptr); /* skip whitespace after // */ |
tokptr=token; skipwhite(tokptr); /* skip whitespace after // */ |
tokptr = texchar(tokptr,hltoken); /* extract first char from token */ |
tokptr = texchar(tokptr,hltoken); /* extract first char from token */ |
hltoklen = strlen(hltoken); /* length of first char */ |
hltoklen = strlen(hltoken); /* length of first char */ |
if ( hltoklen >= minhltoklen ) /*token must be at least \hl or \hd*/ |
if ( hltoklen >= minhltoklen ) { /*token must be at least \hl or \hd*/ |
if ( memcmp(hlchar,hltoken,hltoklen) == 0 ) /* we have an \hline */ |
if ( memcmp(hlchar,hltoken,hltoklen) == 0 ) /* we have an \hline */ |
hline[nrows] += 1; /* bump \hline count for row */ |
hline[nrows] += 1; /* bump \hline count for row */ |
else if ( memcmp(hdchar,hltoken,hltoklen) == 0 ) /*we have an \hdash*/ |
else if ( memcmp(hdchar,hltoken,hltoklen) == 0 ) /*we have an \hdash*/ |
hline[nrows] = (-1); /* set \hdash flag for row */ |
hline[nrows] = (-1); } /* set \hdash flag for row */ |
if ( hline[nrows] != 0 ) /* \hline or \hdash prefixes token */ |
if ( hline[nrows] != 0 ) /* \hline or \hdash prefixes token */ |
{ skipwhite(tokptr); /* flush whitespace after \hline */ |
{ skipwhite(tokptr); /* flush whitespace after \hline */ |
if ( *tokptr == '\000' /* end-of-expression after \hline */ |
if ( *tokptr == '\000' /* end-of-expression after \hline */ |
|| isthischar(*tokptr,coldelim) ) /* or unescaped coldelim */ |
|| isthischar(*tokptr,coldelim) ) /* or unescaped coldelim */ |
istokwhite = ishonly = 1; /* so token contains \hline only */ |
{ istokwhite = 1; /* so token contains \hline only */ |
|
if ( iseox ) ishonly = 1; } /* ignore entire row at eox */ |
else /* token contains more than \hline */ |
else /* token contains more than \hline */ |
strcpy(token,tokptr); } /* so flush \hline from token */ |
strcpy(token,tokptr); } /* so flush \hline from token */ |
} /* --- end-of-if(ncols[nrows]==0) --- */ |
} /* --- end-of-if(ncols[nrows]==0) --- */ |
Line 7452 for ( irow=0; irow<=nrows; irow++ ) /*to
|
Line 9155 for ( irow=0; irow<=nrows; irow++ ) /*to
|
for ( icol=0; icol<ncols[irow]; icol++ ) /* go through cells in this row */ |
for ( icol=0; icol<ncols[irow]; icol++ ) /* go through cells in this row */ |
{ |
{ |
subraster *tsp = toksp[itoken]; /* token that belongs in this cell */ |
subraster *tsp = toksp[itoken]; /* token that belongs in this cell */ |
|
/* --- first adjust leftcol for vline to left of icol, if present ---- */ |
|
leftcol += vlinespace(icol); /* space for vline to left of col */ |
|
/* --- now rasterize cell ---- */ |
if ( tsp != NULL ) /* have a rasterized cell token */ |
if ( tsp != NULL ) /* have a rasterized cell token */ |
{ |
{ |
/* --- local parameters --- */ |
/* --- local parameters --- */ |
Line 7461 for ( irow=0; irow<=nrows; irow++ ) /*to
|
Line 9167 for ( irow=0; irow<=nrows; irow++ ) /*to
|
tokencol = 0, /*H offset (init for left justify)*/ |
tokencol = 0, /*H offset (init for left justify)*/ |
tokenrow = baseline - tsp->baseline;/*V offset (init for baseline)*/ |
tokenrow = baseline - tsp->baseline;/*V offset (init for baseline)*/ |
/* --- adjust leftcol for vline to left of icol, if present ---- */ |
/* --- adjust leftcol for vline to left of icol, if present ---- */ |
leftcol += vlinespace(icol); /* space for vline to left of col */ |
/*leftcol += vlinespace(icol);*/ /* space for vline to left of col */ |
/* --- reset justification (if not left-justified) --- */ |
/* --- reset justification (if not left-justified) --- */ |
if ( justify[icol] == 0 ) /* but user wants it centered */ |
if ( justify[icol] == 0 ) /* but user wants it centered */ |
tokencol = (cwidth-twidth+1)/2; /* so split margin left/right */ |
tokencol = (cwidth-twidth+1)/2; /* so split margin left/right */ |
Line 7735 end_of_job:
|
Line 9441 end_of_job:
|
* string immediately following \line to be |
* string immediately following \line to be |
* rasterized, and returning ptr immediately |
* rasterized, and returning ptr immediately |
* following last character processed. |
* following last character processed. |
* size (I) int containing 0-4 default font size |
* size (I) int containing 0-7 default font size |
* basesp (I) subraster * to character (or subexpression) |
* basesp (I) subraster * to character (or subexpression) |
* immediately preceding \line |
* immediately preceding \line |
* (unused, but passed for consistency) |
* (unused, but passed for consistency) |
Line 7761 char *texsubexpr(),linexpr[257], *xptr=l
|
Line 9467 char *texsubexpr(),linexpr[257], *xptr=l
|
subraster *new_subraster(), *linesp=NULL; /* subraster for line */ |
subraster *new_subraster(), *linesp=NULL; /* subraster for line */ |
/*char *origexpression = *expression;*/ /*original expression after \line*/ |
/*char *origexpression = *expression;*/ /*original expression after \line*/ |
int pixsz = 1; /* pixels are one bit each */ |
int pixsz = 1; /* pixels are one bit each */ |
|
int thickness = 1; /* line thickness */ |
double strtod(), /* convert ascii params to doubles */ |
double strtod(), /* convert ascii params to doubles */ |
xinc=0.0, yinc=0.0, /* x,y-increments for line, */ |
xinc=0.0, yinc=0.0, /* x,y-increments for line, */ |
xlen=0.0, ylen=0.0; /* x,y lengths for line */ |
xlen=0.0, ylen=0.0; /* x,y lengths for line */ |
int width=0, height=0; /* #pixels width,height of line */ |
int width=0, height=0, /* #pixels width,height of line */ |
|
rwidth=0, rheight=0; /*alloc width,height plus thickness*/ |
int istop=0, isright=0, /* origin at bot-left if x,yinc>=0 */ |
int istop=0, isright=0, /* origin at bot-left if x,yinc>=0 */ |
origin = 0; /* x,yinc: ++=00 +-=01 -+=10 --=11 */ |
origin = 0; /* x,yinc: ++=00 +-=01 -+=10 --=11 */ |
int line_raster(); /* draw line in linesp->image */ |
int line_raster(); /* draw line in linesp->image */ |
Line 7774 obtain (xinc,yinc) arguments immediately
|
Line 9482 obtain (xinc,yinc) arguments immediately
|
/* --- parse for (xinc,yinc) arguments, and bump expression past it --- */ |
/* --- parse for (xinc,yinc) arguments, and bump expression past it --- */ |
*expression = texsubexpr(*expression,linexpr,253,"(",")",0,0); |
*expression = texsubexpr(*expression,linexpr,253,"(",")",0,0); |
if ( *linexpr == '\000' ) goto end_of_job; /* couldn't get (xinc,yinc) */ |
if ( *linexpr == '\000' ) goto end_of_job; /* couldn't get (xinc,yinc) */ |
/* --- now interpret xinc,yinc returned in linexpr --- */ |
/* --- now interpret xinc,yinc;thickness returned in linexpr --- */ |
|
if ( (xptr=strchr(linexpr,';')) != NULL ) /* look for ';' after xinc,yinc */ |
|
{ *xptr = '\000'; /* terminate linexpr at ; */ |
|
thickness = (int)strtol(xptr+1,NULL,10); } /* get int thickness */ |
if ( (xptr=strchr(linexpr,',')) != NULL ) /* look for ',' in xinc,yinc */ |
if ( (xptr=strchr(linexpr,',')) != NULL ) /* look for ',' in xinc,yinc */ |
*xptr = '\000'; /* found it, so replace ',' by '\0'*/ |
*xptr = '\000'; /* found it, so replace ',' by '\0'*/ |
if ( *linexpr != '\000' ) /* check against missing 1st arg */ |
if ( *linexpr != '\000' ) /* check against missing 1st arg */ |
Line 7803 calculate width,height, etc, based on xl
|
Line 9514 calculate width,height, etc, based on xl
|
xlen = absval(xlen); /* force xlen positive */ |
xlen = absval(xlen); /* force xlen positive */ |
ylen = absval(ylen); /* force ylen positive */ |
ylen = absval(ylen); /* force ylen positive */ |
/* --- calculate corresponding lengths in pixels --- */ |
/* --- calculate corresponding lengths in pixels --- */ |
width = max2(1,iround(unitlength*xlen)); /*scale by unitlength and round,*/ |
width = max2(1,iround(unitlength*xlen)); /*scale by unitlength and round,*/ |
height = max2(1,iround(unitlength*ylen)); /* and must be at least 1 pixel */ |
height = max2(1,iround(unitlength*ylen)); /* and must be at least 1 pixel */ |
|
rwidth = width + (ylen<0.001?0:max2(0,thickness-1)); |
|
rheight = height + (xlen<0.001?0:max2(0,thickness-1)); |
/* --- set origin corner, x,yinc's: ++=0=(0,0) +-=1=(0,1) -+=10=(1,0) --- */ |
/* --- set origin corner, x,yinc's: ++=0=(0,0) +-=1=(0,1) -+=10=(1,0) --- */ |
if ( xinc < 0.0 ) isright = 1; /*negative xinc, so corner is (1,?)*/ |
if ( xinc < 0.0 ) isright = 1; /*negative xinc, so corner is (1,?)*/ |
if ( yinc < 0.0 ) istop = 1; /*negative yinc, so corner is (?,1)*/ |
if ( yinc < 0.0 ) istop = 1; /*negative yinc, so corner is (?,1)*/ |
Line 7813 if ( msgfp!=NULL && msglevel>=29 ) /* de
|
Line 9526 if ( msgfp!=NULL && msglevel>=29 ) /* de
|
fprintf(msgfp,"rastline> width,height,origin;x,yinc=%d,%d,%d;%g,%g\n", |
fprintf(msgfp,"rastline> width,height,origin;x,yinc=%d,%d,%d;%g,%g\n", |
width,height,origin,xinc,yinc); |
width,height,origin,xinc,yinc); |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
allocate subraster and raster for complete picture |
allocate subraster and raster for line |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- sanity check on width,height args --- */ |
/* --- sanity check on width,height,thickness args --- */ |
if ( width < 1 || width > 600 |
if ( width < 1 || width > 600 |
|| height < 1 || height > 600 ) goto end_of_job; |
|| height < 1 || height > 600 |
|
|| thickness<1||thickness>25 ) goto end_of_job; |
/* --- allocate and initialize subraster for constructed line --- */ |
/* --- allocate and initialize subraster for constructed line --- */ |
if ( (linesp=new_subraster(width,height,pixsz)) /* allocate new subraster */ |
if ( (linesp=new_subraster(rwidth,rheight,pixsz)) /* alloc new subraster */ |
== NULL ) goto end_of_job; /* quit if failed */ |
== NULL ) goto end_of_job; /* quit if failed */ |
/* --- initialize line subraster parameters --- */ |
/* --- initialize line subraster parameters --- */ |
linesp->type = IMAGERASTER; /* image */ |
linesp->type = IMAGERASTER; /* image */ |
linesp->symdef = NULL; /* not applicable for image */ |
linesp->symdef = NULL; /* not applicable for image */ |
linesp->baseline = height/2 + 2; /* is a little above center good? */ |
linesp->baseline = height/2 + 2 /* is a little above center good? */ |
|
+ (rheight-height)/2; /* account for line thickness too */ |
linesp->size = size; /* size (probably unneeded) */ |
linesp->size = size; /* size (probably unneeded) */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
draw the line |
draw the line |
Line 7834 line_raster ( linesp->image, /* embedde
|
Line 9549 line_raster ( linesp->image, /* embedde
|
(isright? width-1 : 0), /* col0, from left or right */ |
(isright? width-1 : 0), /* col0, from left or right */ |
(istop? height-1 : 0), /* row1, to top or bottom */ |
(istop? height-1 : 0), /* row1, to top or bottom */ |
(isright? 0 : width-1), /* col1, to right or left */ |
(isright? 0 : width-1), /* col1, to right or left */ |
1 ); /* line thickness is 1 pixel */ |
thickness ); /* line thickness (usually 1 pixel)*/ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
return constructed line to caller |
return constructed line to caller |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 7846 end_of_job:
|
Line 9561 end_of_job:
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: rastrule ( expression, size, basesp, arg1, arg2, arg3 ) |
|
* Purpose: \rule handler, returns subraster corresponding to rule |
|
* parameters [lift]{width}{height} |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I/O) char ** to first char of null-terminated |
|
* string immediately following \rule to be |
|
* rasterized, and returning ptr immediately |
|
* following last character processed. |
|
* size (I) int containing 0-7 default font size |
|
* basesp (I) subraster * to character (or subexpression) |
|
* immediately preceding \rule |
|
* (unused, but passed for consistency) |
|
* arg1 (I) int unused |
|
* arg2 (I) int unused |
|
* arg3 (I) int unused |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( subraster * ) ptr to subraster corresponding to rule |
|
* requested, or NULL for any parsing error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Summary of syntax... |
|
* \rule[lift]{width}{height} |
|
* o if [lift] not given, then bottom of rule on baseline |
|
* o if width=0 then you get an invisible strut 1 (one) pixel wide |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
subraster *rastrule ( char **expression, int size, subraster *basesp, |
|
int arg1, int arg2, int arg3 ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
char *texsubexpr(), rulexpr[257]; /* rule[lift]{wdth}{hgt} */ |
|
subraster *new_subraster(), *rulesp=NULL; /* subraster for rule */ |
|
int pixsz = 1; /* pixels are one bit each */ |
|
int lift=0, width=0, height=0; /* default rule parameters */ |
|
double strtod(), dval; /* convert ascii params to doubles */ |
|
int rwidth=0, rheight=0; /* alloc width, height plus lift */ |
|
int rule_raster(); /* draw rule in rulesp->image */ |
|
/* ------------------------------------------------------------------------- |
|
Obtain lift,width,height |
|
-------------------------------------------------------------------------- */ |
|
/* --- check for optional lift arg --- */ |
|
if ( *(*expression) == '[' ) /*check for []-enclosed optional arg*/ |
|
{ *expression = texsubexpr(*expression,rulexpr,255,"[","]",0,0); |
|
dval = (int)(strtod(rulexpr,NULL)+0.5); /* convert [lift] to int */ |
|
if ( dval <= 99 && dval >= (-99) ) /* sanity check */ |
|
lift = iround(unitlength*dval); } /* scale by unitlength and round */ |
|
/* --- parse for width --- */ |
|
*expression = texsubexpr(*expression,rulexpr,255,"{","}",0,0); |
|
if ( *rulexpr == '\000' ) goto end_of_job; /* quit if args missing */ |
|
dval = (int)(strtod(rulexpr,NULL)+0.5); /* convert {width} to int */ |
|
if ( dval <= 500 && dval >= 0 ) /* sanity check */ |
|
width = max2(0,iround(unitlength*dval)); /* scale by unitlength and round*/ |
|
/* --- parse for height --- */ |
|
*expression = texsubexpr(*expression,rulexpr,255,"{","}",0,0); |
|
if ( *rulexpr == '\000' ) goto end_of_job; /* quit if args missing */ |
|
dval = (int)(strtod(rulexpr,NULL)+0.5); /* convert {height} to int */ |
|
if ( dval <= 500 && dval > 0 ) /* sanity check */ |
|
height= max2(1,iround(unitlength*dval)); /* scale by unitlength and round*/ |
|
/* --- raster width,height in pixels --- */ |
|
rwidth = max2(1,width); /* raster must be at least 1 pixel*/ |
|
rheight = height + (lift>=0?lift: /* raster height plus lift */ |
|
(-lift<height?0:-lift-height+1)); /* may need empty space above rule */ |
|
/* ------------------------------------------------------------------------- |
|
allocate subraster and raster for rule |
|
-------------------------------------------------------------------------- */ |
|
/* --- sanity check on width,height,thickness args --- */ |
|
if ( rwidth < 1 || rwidth > 600 |
|
|| rheight < 1 || rheight > 600 ) goto end_of_job; |
|
/* --- allocate and initialize subraster for constructed rule --- */ |
|
if ( (rulesp=new_subraster(rwidth,rheight,pixsz)) /* alloc new subraster */ |
|
== NULL ) goto end_of_job; /* quit if failed */ |
|
/* --- initialize line subraster parameters --- */ |
|
rulesp->type = IMAGERASTER; /* image */ |
|
rulesp->symdef = NULL; /* not applicable for image */ |
|
rulesp->baseline = rheight-1 + (lift>=0?0:lift); /*adjust baseline for lift*/ |
|
rulesp->size = size; /* size (probably unneeded) */ |
|
/* ------------------------------------------------------------------------- |
|
draw the rule |
|
-------------------------------------------------------------------------- */ |
|
rule_raster ( rulesp->image, /* embedded raster image */ |
|
(-lift<height?0:rheight-height), /* topmost row for top-left corner*/ |
|
0, /* leftmost col for top-left corner*/ |
|
width, /* rule width */ |
|
height, /* rule height */ |
|
( width>0? 0:4 ) ); /* rule type */ |
|
/* ------------------------------------------------------------------------- |
|
return constructed rule to caller |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
return ( rulesp ); /* return rule to caller */ |
|
} /* --- end-of-function rastrule() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: rastcircle ( expression, size, basesp, arg1, arg2, arg3 ) |
* Function: rastcircle ( expression, size, basesp, arg1, arg2, arg3 ) |
* Purpose: \circle handler, returns subraster corresponding to ellipse |
* Purpose: \circle handler, returns subraster corresponding to ellipse |
* parameters (xdiam[,ydiam]) |
* parameters (xdiam[,ydiam]) |
Line 8093 end_of_job:
|
Line 9903 end_of_job:
|
* string immediately following \raisebox to be |
* string immediately following \raisebox to be |
* rasterized, and returning ptr immediately |
* rasterized, and returning ptr immediately |
* following last character processed. |
* following last character processed. |
* size (I) int containing 0-5 default font size |
* size (I) int containing 0-7 default font size |
* basesp (I) subraster * to character (or subexpression) |
* basesp (I) subraster * to character (or subexpression) |
* immediately preceding \rotatebox |
* immediately preceding \raisebox |
* (unused, but passed for consistency) |
* (unused, but passed for consistency) |
* arg1 (I) int unused |
* arg1 (I) int unused |
* arg2 (I) int unused |
* arg2 (I) int unused |
Line 8115 subraster *rastraise ( char **expression
|
Line 9925 subraster *rastraise ( char **expression
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), subexpr[8192], *liftexpr=subexpr; /* args */ |
char *texsubexpr(), subexpr[MAXSUBXSZ+1], *liftexpr=subexpr; /* args */ |
subraster *rasterize(), *raisesp=NULL; /* rasterize subexpr to be raised */ |
subraster *rasterize(), *raisesp=NULL; /* rasterize subexpr to be raised */ |
int lift=0; /* amount to raise/lower baseline */ |
int lift=0; /* amount to raise/lower baseline */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 8155 end_of_job:
|
Line 9965 end_of_job:
|
* string immediately following \rotatebox to be |
* string immediately following \rotatebox to be |
* rasterized, and returning ptr immediately |
* rasterized, and returning ptr immediately |
* following last character processed. |
* following last character processed. |
* size (I) int containing 0-5 default font size |
* size (I) int containing 0-7 default font size |
* basesp (I) subraster * to character (or subexpression) |
* basesp (I) subraster * to character (or subexpression) |
* immediately preceding \rotatebox |
* immediately preceding \rotatebox |
* (unused, but passed for consistency) |
* (unused, but passed for consistency) |
Line 8177 subraster *rastrotate ( char **expressio
|
Line 9987 subraster *rastrotate ( char **expressio
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), subexpr[8192], *degexpr=subexpr; /* args */ |
char *texsubexpr(), subexpr[MAXSUBXSZ+1], *degexpr=subexpr; /* args */ |
subraster *rasterize(), *rotsp=NULL; /* subraster for rotated subexpr */ |
subraster *rasterize(), *rotsp=NULL; /* subraster for rotated subexpr */ |
raster *rastrot(), *rotrp=NULL; /* rotate subraster->image 90 degs */ |
raster *rastrot(), *rotrp=NULL; /* rotate subraster->image 90 degs */ |
int delete_raster(); /* delete intermediate rasters */ |
int delete_raster(); /* delete intermediate rasters */ |
Line 8245 if ( rotrp != NULL ) /* rotated raster
|
Line 10055 if ( rotrp != NULL ) /* rotated raster
|
{ rotsp->type = IMAGERASTER; /* signal constructed image */ |
{ rotsp->type = IMAGERASTER; /* signal constructed image */ |
rotsp->image = rotrp; /* raster we just constructed */ |
rotsp->image = rotrp; /* raster we just constructed */ |
/* --- now try to guess pleasing baseline --- */ |
/* --- now try to guess pleasing baseline --- */ |
if ( idegrees > 2 ) /* leave unchanged if unrotated */ |
if ( idegrees > 2 ) { /* leave unchanged if unrotated */ |
if ( strlen(subexpr) < 3 /* we rotated a short expression */ |
if ( strlen(subexpr) < 3 /* we rotated a short expression */ |
|| abs(idegrees-180) < 3 ) /* or just turned it upside-down */ |
|| abs(idegrees-180) < 3 ) /* or just turned it upside-down */ |
baseline = rotrp->height - 1; /* so set with nothing descending */ |
baseline = rotrp->height - 1; /* so set with nothing descending */ |
else /* rotated a long expression */ |
else /* rotated a long expression */ |
baseline = (65*(rotrp->height-1))/100; /* roughly center long expr */ |
baseline = (65*(rotrp->height-1))/100; } /* roughly center long expr */ |
rotsp->baseline = baseline; } /* set baseline as calculated above*/ |
rotsp->baseline = baseline; } /* set baseline as calculated above*/ |
/* --- return rotated subexpr to caller --- */ |
/* --- return rotated subexpr to caller --- */ |
end_of_job: |
end_of_job: |
Line 8259 end_of_job:
|
Line 10069 end_of_job:
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: rastreflect ( expression, size, basesp, arg1, arg2, arg3 ) |
|
* Purpose: \reflectbox[axis]{subexpression} handler, returns subraster |
|
* containing subexpression reflected horizontally (i.e., around |
|
* vertical axis, |_ becomes _|) if [axis] not given or axis=1, |
|
* or reflected vertically if axis=2 given. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I/O) char ** to first char of null-terminated |
|
* string immediately following \reflectbox to |
|
* be rasterized, and returning ptr immediately |
|
* following last character processed. |
|
* size (I) int containing 0-7 default font size |
|
* basesp (I) subraster * to character (or subexpression) |
|
* immediately preceding \reflectbox |
|
* (unused, but passed for consistency) |
|
* arg1 (I) int unused |
|
* arg2 (I) int unused |
|
* arg3 (I) int unused |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( subraster * ) ptr to subraster corresponding to \reflectbox |
|
* requested, or NULL for any parsing error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Summary of syntax... |
|
* \reflectbox[axis]{subexpression} |
|
* o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
subraster *rastreflect ( char **expression, int size, subraster *basesp, |
|
int arg1, int arg2, int arg3 ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
char *texsubexpr(), subexpr[MAXSUBXSZ+1], *axisexpr=subexpr; /* args */ |
|
subraster *rasterize(), *refsp=NULL; /* subraster for reflected subexpr */ |
|
raster *rastref(), *refrp=NULL; /* reflect subraster->image */ |
|
int axis = 1; /* default horizontal reflection */ |
|
int delete_raster(); /* delete intermediate raster */ |
|
int baseline=0; /* baseline of rasterized image */ |
|
/* ------------------------------------------------------------------------- |
|
obtain [axis] argument immediately following \reflectbox command, if given |
|
-------------------------------------------------------------------------- */ |
|
/* --- check for optional [axis] arg --- */ |
|
if ( *(*expression) == '[' ) /*check for []-enclosed optional arg*/ |
|
{ *expression = texsubexpr(*expression,axisexpr,255,"[","]",0,0); |
|
axis = atoi(axisexpr); /* convert [axis] to int */ |
|
if ( axis<1 || axis>2 ) /* check axis input */ |
|
axis = 1; } /* back to default if illegal */ |
|
/* ------------------------------------------------------------------------- |
|
obtain {subexpr} argument after optional [axis], and rasterize it |
|
-------------------------------------------------------------------------- */ |
|
/* --- parse for {subexpr} arg, and bump expression past it --- */ |
|
*expression = texsubexpr(*expression,subexpr,0,"{","}",0,0); |
|
/* --- rasterize subexpression to be reflected --- */ |
|
if ( (refsp = rasterize(subexpr,size)) /* rasterize subexpression */ |
|
== NULL ) goto end_of_job; /* and quit if failed */ |
|
/* --- return unmodified image if no reflection requested --- */ |
|
if ( axis<1 || axis>2 ) goto end_of_job; /* don't bother reflecting image */ |
|
/* --- extract params for image to be reflected --- */ |
|
refrp = refsp->image; /* unreflected rasterized image */ |
|
baseline = refsp->baseline; /* and baseline of that image */ |
|
/* ------------------------------------------------------------------------- |
|
reflect image and adjust its parameters |
|
-------------------------------------------------------------------------- */ |
|
/* --- reflect image --- */ |
|
refrp = rastref(refsp->image,axis); /* reflect raster image */ |
|
if ( refrp == NULL ) goto end_of_job; /* failed to reflect image */ |
|
delete_raster(refsp->image); /* free original raster image */ |
|
refsp->image = refrp; /*and replace it with reflected one*/ |
|
/* --- adjust parameters --- */ |
|
if ( axis == 2 ) /* for vertical reflection */ |
|
baseline = refrp->height - 1; /* set with nothing descending */ |
|
refsp->baseline = baseline; /* reset baseline of reflected image*/ |
|
/* --- return reflected subexpr to caller --- */ |
|
end_of_job: |
|
return ( refsp ); /*back to caller with reflected expr*/ |
|
} /* --- end-of-function rastreflect() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: rastfbox ( expression, size, basesp, arg1, arg2, arg3 ) |
* Function: rastfbox ( expression, size, basesp, arg1, arg2, arg3 ) |
* Purpose: \fbox{subexpression} handler, returns subraster |
* Purpose: \fbox{subexpression} handler, returns subraster |
* containing subexpression with frame box drawn around it |
* containing subexpression with frame box drawn around it |
Line 8289 subraster *rastfbox ( char **expression,
|
Line 10178 subraster *rastfbox ( char **expression,
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), subexpr[8192], widtharg[512]; /* args */ |
char *texsubexpr(), subexpr[MAXSUBXSZ+1], widtharg[512]; /* args */ |
subraster *rasterize(), *framesp=NULL; /* rasterize subexpr to be framed */ |
subraster *rasterize(), *framesp=NULL; /* rasterize subexpr to be framed */ |
raster *border_raster(), *bp=NULL; /* framed image raster */ |
raster *border_raster(), *bp=NULL; /* framed image raster */ |
double strtod(); /* interpret [width][height] */ |
double strtod(); /* interpret [width][height] */ |
Line 8377 subraster *rastinput ( char **expression
|
Line 10266 subraster *rastinput ( char **expression
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), tag[512]="\000", filename[1024]="\000"; /* args */ |
char *texsubexpr(), tag[1024]="\000", filename[1024]="\000"; /* args */ |
subraster *rasterize(), *inputsp=NULL; /* rasterized input image */ |
subraster *rasterize(), *inputsp=NULL; /* rasterized input image */ |
int status, rastreadfile(); /* read input file */ |
int status, rastreadfile(); /* read input file */ |
int format=0, npts=0; /* don't reformat (numerical) input */ |
int format=0, npts=0; /* don't reformat (numerical) input */ |
char subexpr[8192], /* concatanated lines from input file */ |
char subexpr[MAXFILESZ+1] = "\000", /*concatanated lines from input file*/ |
*mimeprep(), /* preprocess inputted data */ |
*mimeprep(), /* preprocess inputted data */ |
*dtoa(), *reformat=NULL; /* reformat numerical input */ |
*dbltoa(), *reformat=NULL; /* reformat numerical input */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
obtain [tag]{filename} argument |
obtain [tag]{filename} argument |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- parse for optional [tag] or [fmt] arg, bump expression past it --- */ |
/* --- parse for optional [tag] or [fmt] arg, bump expression past it --- */ |
if ( *(*expression) == '[' ) /* check for []-enclosed value */ |
if ( *(*expression) == '[' ) /* check for []-enclosed value */ |
{ char argfld[2048]; /* optional argument field */ |
{ char argfld[MAXTOKNSZ+1]; /* optional argument field */ |
*expression = texsubexpr(*expression,argfld,2047,"[","]",0,0); |
*expression = texsubexpr(*expression,argfld,MAXTOKNSZ,"[","]",0,0); |
if ( (reformat=strstr(argfld,"dtoa")) != NULL ) /* dtoa requested */ |
if ( (reformat=strstr(argfld,"dtoa")) != NULL ) /*dtoa/dbltoa requested*/ |
{ format = 1; /* signal dtoa() format */ |
{ format = 1; /* signal dtoa()/dbltoa() format */ |
if ( (reformat=strchr(reformat,'=')) != NULL ) /* have dtoa= */ |
if ( (reformat=strchr(reformat,'=')) != NULL ) /* have dtoa= */ |
npts = (int)strtol(reformat+1,NULL,0); } /* so set npts */ |
npts = (int)strtol(reformat+1,NULL,0); } /* so set npts */ |
if ( format == 0 ) /* reformat not requested */ |
if ( format == 0 ) /* reformat not requested */ |
Line 8409 if ( *filename != '\000' /* got filenam
|
Line 10298 if ( *filename != '\000' /* got filenam
|
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
Read file and rasterize constructed subexpression |
Read file and rasterize constructed subexpression |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
status = rastreadfile(filename,tag,subexpr); /* read file */ |
status = rastreadfile(filename,0,tag,subexpr); /* read file */ |
if ( *subexpr == '\000' ) goto end_of_job; /* quit if problem */ |
if ( *subexpr == '\000' ) goto end_of_job; /* quit if problem */ |
/* --- rasterize input subexpression --- */ |
/* --- rasterize input subexpression --- */ |
mimeprep(subexpr); /* preprocess subexpression */ |
mimeprep(subexpr); /* preprocess subexpression */ |
if ( format == 1 ) /* dtoa() */ |
if ( format == 1 ) /* dtoa()/dbltoa() */ |
{ double d = strtod(subexpr,NULL); /* interpret subexpr as double */ |
{ double d = strtod(subexpr,NULL); /* interpret subexpr as double */ |
if ( d != 0.0 ) /* conversion to double successful */ |
if ( d != 0.0 ) /* conversion to double successful */ |
if ( (reformat=dtoa(d,npts)) != NULL ) /* reformat successful */ |
if ( (reformat=dbltoa(d,npts)) != NULL ) /* reformat successful */ |
strcpy(subexpr,reformat); } /*replace subexpr with reformatted*/ |
strcpy(subexpr,reformat); } /*replace subexpr with reformatted*/ |
inputsp = rasterize(subexpr,size); /* rasterize subexpression */ |
inputsp = rasterize(subexpr,size); /* rasterize subexpression */ |
/* --- return input image to caller --- */ |
/* --- return input image to caller --- */ |
Line 8447 end_of_job:
|
Line 10336 end_of_job:
|
* requested, or NULL for any parsing error |
* requested, or NULL for any parsing error |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Notes: o Summary of syntax... |
* Notes: o Summary of syntax... |
* \counter[value][logfile]{filename} |
* \counter[value][logfile]{filename:tag} |
* o |
* o :tag is optional |
* ======================================================================= */ |
* ======================================================================= */ |
/* --- entry point --- */ |
/* --- entry point --- */ |
subraster *rastcounter ( char **expression, int size, subraster *basesp, |
subraster *rastcounter ( char **expression, int size, subraster *basesp, |
Line 8458 subraster *rastcounter ( char **expressi
|
Line 10347 subraster *rastcounter ( char **expressi
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), filename[1024]="\000", /* counter file */ |
char *texsubexpr(), filename[1024]="\000", /* counter file */ |
logfile[1024]="\000", tag[512]="\000"; /* log file and tag */ |
logfile[1024]="\000", tag[1024]="\000"; /*optional log file and tag*/ |
subraster *rasterize(), *countersp=NULL; /* rasterized counter image */ |
subraster *rasterize(), *countersp=NULL; /* rasterized counter image */ |
FILE /* *fp=NULL,*/ *logfp=NULL; /* counter and log file pointers */ |
FILE /* *fp=NULL,*/ *logfp=NULL; /* counter and log file pointers */ |
int rastreadfile(), rastwritefile(); /* to read and write counter file */ |
int status=0,rastreadfile(),rastwritefile(), /*read,write counter file*/ |
char text[2048] = "1_", /* first (and only) line in counter file */ |
isstrict = 1; /* true to only write to existing files */ |
|
char text[MAXFILESZ] = "1_", /* only line in counter file without tags */ |
*delim = NULL, /* delimiter in text */ |
*delim = NULL, /* delimiter in text */ |
utext[32] = "1_", /* default delimiter */ |
utext[128] = "1_", /* default delimiter */ |
*udelim = utext+1; /* underscore delimiter */ |
*udelim = utext+1; /* underscore delimiter */ |
char *timestamp(), /* timestamp for logging */ |
char *rasteditfilename(), /* edit log file name */ |
*dtoa(); /* double to comma-separated */ |
*timestamp(), /* timestamp for logging */ |
|
*dbltoa(); /* double to comma-separated ascii */ |
int counter = 1, /* atoi(text) (after _ removed, if present) */ |
int counter = 1, /* atoi(text) (after _ removed, if present) */ |
gotcount = 0, /* set true once counter value determined */ |
value = 1, /* optional [value] argument */ |
|
gotvalue = 0, /* set true if [value] supplied */ |
|
isdelta = 0, /* set true if [+value] or [-value] is delta*/ |
ordindex = (-1); /* ordinal[] index to append ordinal suffix */ |
ordindex = (-1); /* ordinal[] index to append ordinal suffix */ |
/*--- ordinal suffixes based on units digit of counter ---*/ |
/*--- ordinal suffixes based on units digit of counter ---*/ |
static char *ordinal[]={"th","st","nd","rd","th","th","th","th","th","th"}; |
static char *ordinal[]={"th","st","nd","rd","th","th","th","th","th","th"}; |
Line 8480 first obtain optional [value][logfile] a
|
Line 10373 first obtain optional [value][logfile] a
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- first check for optional \counter[value] --- */ |
/* --- first check for optional \counter[value] --- */ |
if ( *(*expression) == '[' ) /* check for []-enclosed value */ |
if ( *(*expression) == '[' ) /* check for []-enclosed value */ |
{ *expression = texsubexpr(*expression,text,2047,"[","]",0,0); |
{ *expression = texsubexpr(*expression,text,1023,"[","]",0,0); |
if ( *text != '\000' ) /* got counter value */ |
if ( *text != '\000' ) /* got counter value (or logfile) */ |
if ( strlen(text) >= 1 ) /* and it's not an empty string */ |
if ( strlen(text) >= 1 ) { /* and it's not an empty string */ |
if ( isdigit((int)(*text)) ) /* leading 0-9 digit signals value */ |
if ( isthischar(*text,"+-0123456789") ) /* check for leading +-digit */ |
{ counter = (int)(strtod(text,&udelim)+0.1); /* value and delim */ |
gotvalue = 1; /* signal we got optional value */ |
gotcount = 1; } /* signal we got counter value */ |
else /* not +-digit, so must be logfile */ |
else /* not a digit, so must be logfile */ |
strcpy(logfile,text); } /* so just copy it */ |
strcpy(logfile,text); /* so just copy it */ |
|
} /* --- end-of-if(**expression=='[') --- */ |
} /* --- end-of-if(**expression=='[') --- */ |
/* --- next check for optional \counter[][logfile] --- */ |
/* --- next check for optional \counter[][logfile] --- */ |
if ( *(*expression) == '[' ) /* check for []-enclosed logfile */ |
if ( *(*expression) == '[' ) /* check for []-enclosed logfile */ |
{ *expression = texsubexpr(*expression,filename,1023,"[","]",0,0); |
{ *expression = texsubexpr(*expression,filename,1023,"[","]",0,0); |
if ( *text != '\000' ) /* got logfile value */ |
if ( *filename != '\000' ) /* got logfile (or counter value) */ |
if ( strlen(filename) >= 1 ) /* and it's not an empty string */ |
if ( strlen(filename) >= 1 ) { /* and it's not an empty string */ |
if ( !(isdigit((int)(*filename))) /*leading non-digit signals logfile*/ |
if ( !(isthischar(*text,"+-0123456789")) /* not a leading +-digit */ |
|| gotcount ) /* or we already got counter value */ |
|| gotvalue ) /* or we already got counter value */ |
strcpy(logfile,filename); /* so just copy it */ |
strcpy(logfile,filename); /* so just copy it */ |
else /* 0-9 digit, so must be value */ |
else /* leading +-digit must be value */ |
{ strcpy(text,filename); /* copy value to text line */ |
{ strcpy(text,filename); /* copy value to text line */ |
counter = (int)(strtod(text,&udelim)+0.1); /* value and delim */ |
gotvalue = 1; } } /* and signal we got optional value*/ |
gotcount = 1; } /* signal we got counter value */ |
|
} /* --- end-of-if(**expression=='[') --- */ |
} /* --- end-of-if(**expression=='[') --- */ |
|
/* --- evaluate [value] if present --- */ |
|
if ( gotvalue ) { /*leading +-digit should be in text*/ |
|
if ( *text == '+' ) isdelta = (+1); /* signal adding */ |
|
if ( *text == '-' ) isdelta = (-1); /* signal subtracting */ |
|
value = (int)(strtod((isdelta==0?text:text+1),&udelim)+0.1); /*abs(value)*/ |
|
if ( isdelta == (-1) ) value = (-value); /* set negative value if needed */ |
|
counter = value; /* re-init counter */ |
|
} /* --- end-of-if(gotvalue) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
obtain counter {filename} argument |
obtain counter {filename} argument |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 8519 Read and parse file, increment and rewri
|
Line 10418 Read and parse file, increment and rewri
|
if ( strlen(filename) > 1 ) /* make sure we got {filename} arg */ |
if ( strlen(filename) > 1 ) /* make sure we got {filename} arg */ |
{ |
{ |
/* --- read and interpret first (and only) line from counter file --- */ |
/* --- read and interpret first (and only) line from counter file --- */ |
if ( !gotcount ) /* if no [count] argument supplied */ |
if ( !gotvalue || (isdelta!=0) ) /*if no [count] arg or if delta arg*/ |
if ( rastreadfile(filename,tag,text) != 0 ) /* try reading it from file */ |
if ( (status=rastreadfile(filename,1,tag,text)) > 0 ) /*try reading file*/ |
{ counter= 1 + (int)(strtod(text,&udelim)+0.1); /*counter val and delim*/ |
{ char *vdelim = NULL; /* underscore delim from file */ |
gotcount = 1; } /* signal we got counter value */ |
double fileval = strtod(text,&vdelim); /* value and delim from file */ |
|
counter = (int)(fileval<0.0?fileval-0.1:fileval+0.1); /* integerized */ |
|
counter += value; /* bump count by 1 or add/sub delta*/ |
|
if ( !gotvalue ) udelim=vdelim; } /* default to file's current delim */ |
/* --- check for ordinal suffix --- */ |
/* --- check for ordinal suffix --- */ |
if ( udelim != (char *)NULL ) /* have some delim after value */ |
if ( udelim != (char *)NULL ) /* have some delim after value */ |
if ( *udelim == '_' ) /* underscore signals ordinal */ |
if ( *udelim == '_' ) /* underscore signals ordinal */ |
{ ordindex = counter%10; /* least significant digit */ |
{ int abscount = (counter>=0?counter:(-counter)); /* abs(counter) */ |
if ( counter >= 10 ) /* counter is 10 or greater */ |
ordindex = abscount%10; /* least significant digit */ |
if ( (counter/10)%10 == 1 ) /* and the last two are 10-19 */ |
if ( abscount >= 10 ) /* counter is 10 or greater */ |
|
if ( (abscount/10)%10 == 1 ) /* and the last two are 10-19 */ |
ordindex = 0; } /* use th for 11,12,13 rather than st,nd,rd */ |
ordindex = 0; } /* use th for 11,12,13 rather than st,nd,rd */ |
/* --- rewrite counter file --- */ |
/* --- rewrite counter file --- */ |
sprintf(text,"%d",counter); /*build image of incremented counter*/ |
if ( status >= 0 ) /* file was read okay */ |
if ( ordindex >= 0 ) strcat(text,"_"); /* tack on _ */ |
{ sprintf(text,"%d",counter); /*build image of incremented counter*/ |
if ( *tag == '\000' ) strcat(text,"\n"); /* and newline */ |
if ( ordindex >= 0 ) strcat(text,"_"); /* tack on _ */ |
rastwritefile(filename,tag,text,1); /* rewrite incremented counter */ |
if ( *tag == '\000' ) strcat(text,"\n"); /* and newline */ |
|
status = rastwritefile(filename,tag,text,isstrict); } /*rewrite counter*/ |
} /* --- end-of-if(strlen(filename)>1) --- */ |
} /* --- end-of-if(strlen(filename)>1) --- */ |
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
log counter request |
log counter request |
Line 8543 if ( strlen(logfile) > 1 ) /* optional
|
Line 10447 if ( strlen(logfile) > 1 ) /* optional
|
{ |
{ |
char comment[1024] = "\000", /* embedded comment, logfile:comment*/ |
char comment[1024] = "\000", /* embedded comment, logfile:comment*/ |
*commptr = strchr(logfile,':'); /* check for : signalling comment */ |
*commptr = strchr(logfile,':'); /* check for : signalling comment */ |
|
int islogokay = 1; /* logfile must exist if isstrict */ |
if ( commptr != NULL ) /* have embedded comment */ |
if ( commptr != NULL ) /* have embedded comment */ |
{ strcpy(comment,commptr+1); /* comment follows : */ |
{ strcpy(comment,commptr+1); /* comment follows : */ |
*commptr = '\000'; } /* null-terminate actual logfile */ |
*commptr = '\000'; } /* null-terminate actual logfile */ |
if ( (logfp = fopen(logfile,"a")) /* open logfile */ |
strcpy(logfile,rasteditfilename(logfile)); /* edit log file name */ |
!= (FILE *)NULL ) /* opened successfully */ |
if ( *logfile == '\000' ) islogokay = 0; /* given an invalid file name */ |
{ |
else if ( isstrict ) { /*okay, but only write if it exists*/ |
int ilog=0; /* logvars[] index */ |
if ( (logfp=fopen(logfile,"r")) == (FILE *)NULL ) /*doesn't already exist*/ |
fprintf(logfp,"%s ",timestamp()); /* first emit timestamp */ |
islogokay = 0; /* so don't write log file */ |
if (*tag=='\000') fprintf(logfp,"%s",filename); /* emit counter filename */ |
else fclose(logfp); } /* close file opened for test read */ |
else fprintf(logfp,"<%s>",tag); /* or tag if we have one */ |
if ( islogokay ) /* okay to write logfile */ |
fprintf(logfp,"=%d",counter); /* emit counter value */ |
if ( (logfp = fopen(logfile,"a")) /* open logfile */ |
for ( ilog=0; logvars[ilog] != NULL; ilog++ ) /* log till end-of-table */ |
!= (FILE *)NULL ) { /* opened successfully for append */ |
if ( ilog == commentvar /* replace with comment... */ |
int ilog=0; /* logvars[] index */ |
&& commptr != NULL ) /* ...if available */ |
fprintf(logfp,"%s ",timestamp(TZDELTA,0)); /* first emit timestamp */ |
fprintf(logfp," %.256s",comment); /* log embedded comment */ |
if (*tag=='\000') fprintf(logfp,"%s",filename); /* emit counter filename */ |
else |
else fprintf(logfp,"<%s>",tag); /* or tag if we have one */ |
{ char *logval = getenv(logvars[ilog]); /* getenv(variable) to be logged*/ |
fprintf(logfp,"=%d",counter); /* emit counter value */ |
fprintf(logfp," %.64s", /* log variable */ |
if ( status < 1 ) /* read or re-write failed */ |
|
fprintf(logfp,"(%s %d)","error status",status); /* emit error */ |
|
for ( ilog=0; logvars[ilog] != NULL; ilog++ ) /* log till end-of-table */ |
|
if ( ilog == commentvar /* replace with comment... */ |
|
&& commptr != NULL ) /* ...if available */ |
|
fprintf(logfp," %.256s",comment); /* log embedded comment */ |
|
else |
|
{ char *logval = getenv(logvars[ilog]); /*getenv(variable) to be logged*/ |
|
fprintf(logfp," %.64s", /* log variable */ |
(logval!=NULL?logval:"<unknown>")); } /* emit value or <unknown> */ |
(logval!=NULL?logval:"<unknown>")); } /* emit value or <unknown> */ |
fprintf(logfp,"\n"); /* terminating newline */ |
fprintf(logfp,"\n"); /* terminating newline */ |
fclose(logfp); /* close logfile */ |
fclose(logfp); /* close logfile */ |
} /* --- end-of-if(logfp!=NULL) --- */ |
} /* --- end-of-if(islogokay&&logfp!=NULL) --- */ |
} /* --- end-of-if(strlen(logfile)>1) --- */ |
} /* --- end-of-if(strlen(logfile)>1) --- */ |
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
construct counter expression and rasterize it |
construct counter expression and rasterize it |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- construct expression --- */ |
/* --- construct expression --- */ |
/*sprintf(text,"%d",counter);*/ /* start with counter */ |
/*sprintf(text,"%d",counter);*/ /* start with counter */ |
strcpy(text,dtoa(((double)counter),0)); /* comma-separated counter value */ |
strcpy(text,dbltoa(((double)counter),0)); /* comma-separated counter value */ |
if ( ordindex >= 0 ) /* need to tack on ordinal suffix */ |
if ( ordindex >= 0 ) /* need to tack on ordinal suffix */ |
{ strcat(text,"^{\\underline{\\rm~"); /* start with ^ and {\underline{\rm */ |
{ strcat(text,"^{\\underline{\\rm~"); /* start with ^ and {\underline{\rm */ |
strcat(text,ordinal[ordindex]); /* then st,nd,rd, or th */ |
strcat(text,ordinal[ordindex]); /* then st,nd,rd, or th */ |
Line 8585 countersp = rasterize(text,size); /* ras
|
Line 10498 countersp = rasterize(text,size); /* ras
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: rasttoday ( expression, size, basesp, arg1, arg2, arg3 ) |
|
* Purpose: handle \today |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I/O) char ** to first char of null-terminated |
|
* string immediately following \today, |
|
* and returning ptr immediately |
|
* following last character processed. |
|
* size (I) int containing 0-5 default font size |
|
* basesp (I) subraster * to character (or subexpression) |
|
* immediately preceding \today |
|
* (unused, but passed for consistency) |
|
* arg1 (I) int unused |
|
* arg2 (I) int unused |
|
* arg3 (I) int unused |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( subraster * ) subraster ptr to date stamp |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
subraster *rasttoday ( char **expression, int size, subraster *basesp, |
|
int arg1, int arg2, int arg3 ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
char *texsubexpr(), optarg[2050]; /* optional [+/-tzdelta,ifmt] args */ |
|
char *timestamp(), *today=optarg; /* timestamp to be rasterized */ |
|
subraster *rasterize(), *todaysp=NULL; /* rasterize timestamp */ |
|
int ifmt=1, tzdelta=0; /* default timestamp() args */ |
|
/* ------------------------------------------------------------------------- |
|
Get optional args \today[+/-tzdelta,ifmt] |
|
-------------------------------------------------------------------------- */ |
|
/* --- check for optional \today[+/-tzdelta,ifmt] --- */ |
|
if ( *(*expression) == '[' ) /* check for []-enclosed value */ |
|
{ *expression = texsubexpr(*expression,optarg,2047,"[","]",0,0); |
|
if ( *optarg != '\000' ) /* got optional arg */ |
|
{ char *comma = strchr(optarg,','); /* comma between +/-tzdelta,ifmt */ |
|
int iarg, nargs=(comma==NULL?1:2); /* #optional args between []'s */ |
|
if ( comma != NULL ) *comma = '\000'; /* null-terminate first arg */ |
|
for ( iarg=1; iarg<=nargs; iarg++ ) /* process one or both args */ |
|
{ char *arg = (iarg==1?optarg:comma+1); /* choose 1st or 2nd arg */ |
|
if ( isthischar(*arg,"+-") ) /* leading +/- signals tzdelta */ |
|
tzdelta = atoi(arg); /* so interpret arg as tzdelta */ |
|
else ifmt = atoi(arg); } /* else interpret args as ifmt */ |
|
} /* --- end-of-if(*optarg!='\0') --- */ |
|
} /* --- end-of-if(**expression=='[') --- */ |
|
/* ------------------------------------------------------------------------- |
|
Get timestamp and rasterize it |
|
-------------------------------------------------------------------------- */ |
|
strcpy(today,"\\text{"); /* rasterize timestamp as text */ |
|
strcat(today,timestamp(tzdelta,ifmt)); /* get timestamp */ |
|
strcat(today,"}"); /* terminate \text{} braces */ |
|
todaysp = rasterize(today,size); /* rasterize timestamp */ |
|
/* --- return timestamp raster to caller --- */ |
|
/*end_of_job:*/ |
|
return ( todaysp ); /* return timestamp to caller */ |
|
} /* --- end-of-function rasttoday() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: rastcalendar ( expression, size, basesp, arg1, arg2, arg3 ) |
|
* Purpose: handle \calendar |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I/O) char ** to first char of null-terminated |
|
* string immediately following \calendar |
|
* and returning ptr immediately |
|
* following last character processed. |
|
* size (I) int containing 0-5 default font size |
|
* basesp (I) subraster * to character (or subexpression) |
|
* immediately preceding \calendar |
|
* (unused, but passed for consistency) |
|
* arg1 (I) int unused |
|
* arg2 (I) int unused |
|
* arg3 (I) int unused |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( subraster * ) subraster ptr to rendered one-month calendar |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
subraster *rastcalendar ( char **expression, int size, subraster *basesp, |
|
int arg1, int arg2, int arg3 ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
char *texsubexpr(), optarg[2050]; /* optional [year,month] args */ |
|
char *calendar(), *calstr=NULL; /* calendar to be rasterized */ |
|
subraster *rasterize(), *calendarsp=NULL; /* rasterize calendar string */ |
|
int year=0,month=0,day=0, argval=0; /* default calendar() args */ |
|
/* ------------------------------------------------------------------------- |
|
Get optional args \today[+/-tzdelta,ifmt] |
|
-------------------------------------------------------------------------- */ |
|
/* --- check for optional \calendar[year,month] --- */ |
|
if ( *(*expression) == '[' ) /* check for []-enclosed value */ |
|
{ *expression = texsubexpr(*expression,optarg,2047,"[","]",0,0); |
|
if ( *optarg != '\000' ) /* got optional arg */ |
|
{ char *comma = strchr(optarg,','), /* comma between year,month */ |
|
*comma2 = NULL; /* second comma before day */ |
|
int iarg, nargs=(comma==NULL?1:2); /* #optional args between []'s */ |
|
if ( comma != NULL ) { *comma = '\000'; /*null-terminate first arg*/ |
|
if ( (comma2=strchr(comma+1,',')) != NULL ) /* have third arg */ |
|
{ *comma2 = '\000'; nargs++; } } /* null-term 2nd arg, bump count */ |
|
for ( iarg=1; iarg<=nargs; iarg++ ) /* process one or both args */ |
|
{ char *arg= (iarg==1?optarg:(iarg==2?comma+1:comma2+1)); /*get arg*/ |
|
argval = atoi(arg); /* interpret arg as integer */ |
|
if ( iarg < 3 ) /* first two args are month,year */ |
|
{if ( argval>1972 && argval<2100 ) year = argval; /* year value */ |
|
else if ( argval>=1 && argval<=12 ) month = argval;} /*or month*/ |
|
else /* only 3rd arg can be day */ |
|
if ( argval>=1 && argval<=31 ) day = argval; } /* day value */ |
|
} /* --- end-of-if(*optarg!='\0') --- */ |
|
} /* --- end-of-if(**expression=='[') --- */ |
|
/* ------------------------------------------------------------------------- |
|
Get calendar string and rasterize it |
|
-------------------------------------------------------------------------- */ |
|
if ( msgfp!= NULL && msglevel>=9 ) |
|
fprintf(msgfp,"rastcalendar> year=%d, month=%d, day=%d\n", |
|
year,month,day); |
|
calstr = calendar(year,month,day); /* get calendar string */ |
|
calendarsp = rasterize(calstr,size); /* rasterize calendar string */ |
|
/* --- return calendar raster to caller --- */ |
|
/*end_of_job:*/ |
|
return ( calendarsp ); /* return calendar to caller */ |
|
} /* --- end-of-function rastcalendar() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: rastnoop ( expression, size, basesp, nargs, arg2, arg3 ) |
* Function: rastnoop ( expression, size, basesp, nargs, arg2, arg3 ) |
* Purpose: no op -- flush \escape without error |
* Purpose: no op -- flush \escape without error |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
Line 8594 countersp = rasterize(text,size); /* ras
|
Line 10636 countersp = rasterize(text,size); /* ras
|
* following last character processed. |
* following last character processed. |
* size (I) int containing 0-5 default font size |
* size (I) int containing 0-5 default font size |
* basesp (I) subraster * to character (or subexpression) |
* basesp (I) subraster * to character (or subexpression) |
* immediately preceding \fbox |
* immediately preceding \escape |
* (unused, but passed for consistency) |
* (unused, but passed for consistency) |
* nargs (I) int containing number of {}-args after |
* nargs (I) int containing number of {}-args after |
* \escape to be flushed along with it |
* \escape to be flushed along with it |
Line 8612 subraster *rastnoop ( char **expression,
|
Line 10654 subraster *rastnoop ( char **expression,
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
char *texsubexpr(), subexpr[8192]; /* flush dummy args eaten by \escape*/ |
char *texsubexpr(), subexpr[MAXSUBXSZ+1]; /*dummy args eaten by \escape*/ |
subraster *rasterize(), *noopsp=NULL; /* rasterize subexpr */ |
subraster *rasterize(), *noopsp=NULL; /* rasterize subexpr */ |
/* --- flush accompanying args if necessary --- */ |
/* --- flush accompanying args if necessary --- */ |
if ( nargs != NOVALUE /* not unspecified */ |
if ( nargs != NOVALUE /* not unspecified */ |
Line 8648 FILE *rastopenfile ( char *filename, cha
|
Line 10690 FILE *rastopenfile ( char *filename, cha
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
FILE *fp = (FILE *)NULL /*,*fopen()*/; /*file pointer to opened filename*/ |
FILE *fp = (FILE *)NULL /*,*fopen()*/; /*file pointer to opened filename*/ |
char texfile[2048] = "\000", /* local copy of input filename */ |
char texfile[2050] = "\000", /* local, edited copy of filename */ |
amode[128] = "r"; /* test open mode if arg mode=NULL */ |
*rasteditfilename(), /* prepend pathprefix if necessary */ |
int ismode = 0, /* true of mode!=NULL */ |
amode[512] = "r"; /* test open mode if arg mode=NULL */ |
isprefix = (*pathprefix=='\000'?0:1); /* true if paths have prefix */ |
int ismode = 0; /* true of mode!=NULL */ |
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
Check mode and open file |
Check mode and open file |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- check filename --- */ |
/* --- edit filename --- */ |
if ( filename != (char *)NULL ) /* caller passed filename arg */ |
strncpy(texfile,rasteditfilename(filename),2047); /*edited copy of filename*/ |
if ( strlen(filename) >= 1 ) /* make sure we got actual filename*/ |
texfile[2047] = '\000'; /* make sure it's null terminated */ |
{ char *pfilename = filename; /* ptr to 1st char of filename */ |
|
*texfile = '\000'; /* init filename as null string */ |
|
while ( isthischar(*pfilename," /\\") ) /* absolute paths invalid */ |
|
pfilename++; /* so flush leading / or \ (or ' ')*/ |
|
if ( isprefix && *pfilename!='\000' ) /* paths preceded by prefix */ |
|
{ strcat(texfile,pathprefix); /* init filename with path */ |
|
while ( memcmp(pfilename,"../",3)==0 /* have leading ../ */ |
|
|| memcmp(pfilename,"..\\",3)==0 ) /* or ..\ with prefix */ |
|
pfilename += 3; } /* flush leading ../ or ..\ */ |
|
strcat(texfile,pfilename); /* local copy of given filename */ |
|
compress(texfile,' '); } /* remove embedded blanks */ |
|
/* --- check mode --- */ |
/* --- check mode --- */ |
if ( mode != (char *)NULL ) /* caller passed mode arg */ |
if ( mode != (char *)NULL ) /* caller passed mode arg */ |
if ( *mode != '\000' ) /* and it's not an empty string */ |
if ( *mode != '\000' ) /* and it's not an empty string */ |
{ ismode = 1; /* so flip mode flag true */ |
{ ismode = 1; /* so flip mode flag true */ |
strcpy(amode,mode); /* and replace "r" with caller's */ |
strncpy(amode,mode,254); /* and replace "r" with caller's */ |
|
amode[254] = '\000'; /* make sure it's null terminated */ |
compress(amode,' '); } /* remove embedded blanks */ |
compress(amode,' '); } /* remove embedded blanks */ |
/* --- open filename or filename.tex --- */ |
/* --- open filename or filename.tex --- */ |
if ( strlen(texfile) > 1 ) /* make sure we got actual filename*/ |
if ( strlen(texfile) > 1 ) /* make sure we got actual filename*/ |
Line 8697 if ( !ismode && fp!=NULL ) /* no mode,
|
Line 10729 if ( !ismode && fp!=NULL ) /* no mode,
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
* Function: rastreadfile ( filename, tag, value ) |
* Function: rasteditfilename ( filename ) |
|
* Purpose: edits filename to remove security problems, |
|
* e.g., removes all ../'s and ..\'s. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: filename (I) char * to null-terminated string containing |
|
* name of file to be edited |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( char * ) pointer to edited filename, |
|
* or empty string "\000" if any problem |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
char *rasteditfilename ( char *filename ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
static char editname[2050]; /*edited filename returned to caller*/ |
|
char *strchange(); /* prepend pathprefix if necessary */ |
|
int strreplace(), /* remove ../'s and ..\'s */ |
|
isprefix = (*pathprefix=='\000'?0:1); /* true if paths have prefix */ |
|
/* -------------------------------------------------------------------------- |
|
edit filename |
|
-------------------------------------------------------------------------- */ |
|
/* --- first check filename arg --- */ |
|
*editname = '\000'; /* init edited name as empty string*/ |
|
if ( filename == (char *)NULL ) goto end_of_job; /* no filename arg */ |
|
if ( *filename == '\000' ) goto end_of_job; /* filename is an empty string */ |
|
/* --- init edited filename --- */ |
|
strcpy(editname,filename); /* init edited name as input name */ |
|
compress(editname,' '); /* remove embedded blanks */ |
|
/* --- remove leading or embedded ....'s --- */ |
|
while ( strreplace(editname,"....",NULL,0) > 0 ) ; /* squeeze out ....'s */ |
|
/* --- remove leading / and \ and dots (and blanks) --- */ |
|
if ( *editname != '\000' ) /* still have chars in filename */ |
|
while ( isthischar(*editname," ./\\") ) /* absolute paths invalid */ |
|
strcpy(editname,editname+1); /* so flush leading / or \ (or ' ')*/ |
|
if ( *editname == '\000' ) goto end_of_job; /* no chars left in filename */ |
|
/* --- remove leading or embedded ../'s and ..\'s --- */ |
|
while ( strreplace(editname,"../",NULL,0) > 0 ) ; /* squeeze out ../'s */ |
|
while ( strreplace(editname,"..\\",NULL,0) > 0 ) ; /* and ..\'s */ |
|
while ( strreplace(editname,"../",NULL,0) > 0 ) ; /* and ../'s again */ |
|
/* --- prepend path prefix (if compiled with -DPATHPREFIX) --- */ |
|
if ( isprefix && *editname!='\000' ) /* filename is preceded by prefix */ |
|
strchange(0,editname,pathprefix); /* so prepend prefix */ |
|
end_of_job: |
|
return ( editname ); /* back with edited filename */ |
|
} /* --- end-of-function rasteditfilename() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: rastreadfile ( filename, islock, tag, value ) |
* Purpose: Read filename, returning value as string |
* Purpose: Read filename, returning value as string |
* between <tag>...</tag> or entire file if tag=NULL passed. |
* between <tag>...</tag> or entire file if tag=NULL passed. |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Arguments: filename (I) char * to null-terminated string containing |
* Arguments: filename (I) char * to null-terminated string containing |
* name of file to read (preceded by path |
* name of file to read (preceded by path |
* relative to mimetex executable) |
* relative to mimetex executable) |
|
* islock (I) int containing 1 to lock file while reading |
|
* (hopefully done by opening in "r+" mode) |
* tag (I) char * to null-terminated string containing |
* tag (I) char * to null-terminated string containing |
* html-like tagname. File contents between |
* html-like tagname. File contents between |
* <tag> and </tag> will be returned, or |
* <tag> and </tag> will be returned, or |
Line 8716 if ( !ismode && fp!=NULL ) /* no mode,
|
Line 10802 if ( !ismode && fp!=NULL ) /* no mode,
|
* Notes: o |
* Notes: o |
* ======================================================================= */ |
* ======================================================================= */ |
/* --- entry point --- */ |
/* --- entry point --- */ |
int rastreadfile ( char *filename, char *tag, char *value ) |
int rastreadfile ( char *filename, int islock, char *tag, char *value ) |
{ |
{ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
FILE *fp = (FILE *)NULL, *rastopenfile(); /* pointer to opened filename */ |
FILE *fp = (FILE *)NULL, *rastopenfile(); /* pointer to opened filename */ |
char texfile[2048] = "\000", /* local copy of input filename */ |
char texfile[1024] = "\000", /* local copy of input filename */ |
text[4096]; /* line from input file */ |
text[MAXLINESZ+1]; /* line from input file */ |
char *tagp, tag1[512], tag2[512]; /* left <tag> and right <tag/> */ |
char *tagp, tag1[1024], tag2[1024]; /* left <tag> and right <tag/> */ |
int vallen=0, maxvallen=8000; /* #chars in value, max allowed */ |
int vallen=0, maxvallen=MAXFILESZ; /* #chars in value, max allowed */ |
int status = 0; /* status returned, 1=okay */ |
int status = (-1); /* status returned, 1=okay */ |
int tagnum = 0; /* tag we're looking for */ |
int tagnum = 0; /* tag we're looking for */ |
|
/*int islock = 1;*/ /* true to lock file */ |
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
Open file |
Open file |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 8736 if ( value == (char *)NULL ) goto end_of
|
Line 10823 if ( value == (char *)NULL ) goto end_of
|
*value = '\000'; /* init buffer with empty string */ |
*value = '\000'; /* init buffer with empty string */ |
/* --- open filename or filename.tex --- */ |
/* --- open filename or filename.tex --- */ |
if ( filename != (char *)NULL ) /* make sure we got filename arg */ |
if ( filename != (char *)NULL ) /* make sure we got filename arg */ |
{ strcpy(texfile,filename); /* local copy of filename */ |
{ strncpy(texfile,filename,1023); /* local copy of filename */ |
fp = rastopenfile(texfile,"r"); } /* try opening it */ |
texfile[1023] = '\000'; /* make sure it's null terminated */ |
|
fp = rastopenfile(texfile,(islock?"r+":"r")); } /* try opening it */ |
/* --- check that file opened --- */ |
/* --- check that file opened --- */ |
if ( fp == (FILE *)NULL ) /* failed to open file */ |
if ( fp == (FILE *)NULL ) /* failed to open file */ |
{ sprintf(value,"{\\normalsize\\rm[file %s?]}",texfile); |
{ sprintf(value,"{\\normalsize\\rm[file %s?]}",texfile); |
goto end_of_job; } /* return error message to caller */ |
goto end_of_job; } /* return error message to caller */ |
|
status = 0; /* file opened successfully */ |
|
if ( islock ) rewind(fp); /* start at beginning of file */ |
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
construct <tag>'s |
construct <tag>'s |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 8755 if ( tag != (char *)NULL ) /* caller pa
|
Line 10845 if ( tag != (char *)NULL ) /* caller pa
|
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
Read file, concatnate lines |
Read file, concatnate lines |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
while ( fgets(text,4090,fp) != (char *)NULL ) { /* read input till eof */ |
while ( fgets(text,MAXLINESZ-1,fp) != (char *)NULL ) { /*read input till eof*/ |
switch ( tagnum ) { /* look for left- or right-tag */ |
switch ( tagnum ) { /* look for left- or right-tag */ |
case 0: break; /* no tag to look for */ |
case 0: status = 1; break; /* no tag to look for */ |
case 1: /* looking for opening left <tag> */ |
case 1: /* looking for opening left <tag> */ |
if ( (tagp=strstr(text,tag1)) == NULL ) break; /*haven't found it yet*/ |
if ( (tagp=strstr(text,tag1)) == NULL ) break; /*haven't found it yet*/ |
strcpy(text,tagp+strlen(tag1)); /* shift out preceding text */ |
strcpy(text,tagp+strlen(tag1)); /* shift out preceding text */ |
Line 8766 while ( fgets(text,4090,fp) != (char *)N
|
Line 10856 while ( fgets(text,4090,fp) != (char *)N
|
if ( (tagp=strstr(text,tag2)) == NULL ) break; /*haven't found it yet*/ |
if ( (tagp=strstr(text,tag2)) == NULL ) break; /*haven't found it yet*/ |
*tagp = '\000'; /* terminate line at tag */ |
*tagp = '\000'; /* terminate line at tag */ |
tagnum = 3; /* done after this line */ |
tagnum = 3; /* done after this line */ |
|
status = 1; /* successfully read tag */ |
break; |
break; |
} /* ---end-of-switch(tagnum) --- */ |
} /* ---end-of-switch(tagnum) --- */ |
if ( tagnum != 1 ) { /* no tag or left tag already found*/ |
if ( tagnum != 1 ) { /* no tag or left tag already found*/ |
Line 8812 int rastwritefile( char *filename, char
|
Line 10903 int rastwritefile( char *filename, char
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
FILE *fp = (FILE *)NULL, *rastopenfile(); /* pointer to opened filename */ |
FILE *fp = (FILE *)NULL, *rastopenfile(); /* pointer to opened filename */ |
char texfile[2048] = "\000", /* local copy of input filename */ |
char texfile[1024] = "\000", /* local copy of input filename */ |
filebuff[16384] = "\000", /* entire contents of file */ |
filebuff[MAXFILESZ+1] = "\000", /* entire contents of file */ |
tag1[512], tag2[512], /* left <tag> and right <tag/> */ |
tag1[1024], tag2[1024], /* left <tag> and right <tag/> */ |
*strchange(), /* put value between <tag>...</tag>*/ |
*strchange(), /* put value between <tag>...</tag>*/ |
*timestamp(); /* log modification time */ |
*timestamp(); /* log modification time */ |
int istag=0, rastreadfile(), /* read file if tag!=NULL */ |
int istag=0, rastreadfile(), /* read file if tag!=NULL */ |
/*isstrict = (seclevel>5? 1:0),*/ /*true only writes existing files*/ |
/*isstrict = (seclevel>5? 1:0),*/ /*true only writes existing files*/ |
isnewfile = 0, /* true if writing new file */ |
isnewfile = 0, /* true if writing new file */ |
status = 0; /* status returned, 1=okay */ |
status = 0; /* status returned, 1=okay */ |
|
int istimestamp = 0; /* true to update <timestamp> tag */ |
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
check args |
check args |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 8830 if ( filename == (char *)NULL /* quit i
|
Line 10922 if ( filename == (char *)NULL /* quit i
|
if ( strlen(filename) < 2 /* quit if unreasonable filename */ |
if ( strlen(filename) < 2 /* quit if unreasonable filename */ |
|| *value == '\000' ) goto end_of_job; /* or empty value string supplied */ |
|| *value == '\000' ) goto end_of_job; /* or empty value string supplied */ |
/* --- establish filename[.tex] --- */ |
/* --- establish filename[.tex] --- */ |
strcpy(texfile,filename); /* local copy of input filename */ |
strncpy(texfile,filename,1023); /* local copy of input filename */ |
|
texfile[1023] = '\000'; /* make sure it's null terminated */ |
if ( rastopenfile(texfile,NULL) /* unchanged or .tex appended */ |
if ( rastopenfile(texfile,NULL) /* unchanged or .tex appended */ |
== (FILE *)NULL ) /* can't open, so write new file */ |
== (FILE *)NULL ) /* can't open, so write new file */ |
{ if ( isstrict ) goto end_of_job; /* fail if new files not permitted */ |
{ if ( isstrict ) goto end_of_job; /* fail if new files not permitted */ |
Line 8850 read existing file if just rewriting a s
|
Line 10943 read existing file if just rewriting a s
|
*filebuff = '\000'; /* init as empty file */ |
*filebuff = '\000'; /* init as empty file */ |
if ( !isnewfile ) /* if file already exists */ |
if ( !isnewfile ) /* if file already exists */ |
if ( istag ) /* and just rewriting one tag */ |
if ( istag ) /* and just rewriting one tag */ |
if ( rastreadfile(texfile,NULL,filebuff) /* read entire existing file */ |
if ( rastreadfile(texfile,1,NULL,filebuff) /* read entire existing file */ |
== 0 ) goto end_of_job; /* signal error if failed to read */ |
<= 0 ) goto end_of_job; /* signal error if failed to read */ |
/* -------------------------------------------------------------------------- |
/* -------------------------------------------------------------------------- |
construct new file data if needed (entire file replaced by value if no tag) |
construct new file data if needed (entire file replaced by value if no tag) |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 8888 if ( istag ) /* only replacing tag in
|
Line 10981 if ( istag ) /* only replacing tag in
|
>= 0 ) /* usually <tag> precedes </tag> */ |
>= 0 ) /* usually <tag> precedes </tag> */ |
strchange(flen,tagp1+tlen1,value); /* change ...'s to value */ |
strchange(flen,tagp1+tlen1,value); /* change ...'s to value */ |
else /* weirdly, </tag> precedes <tag> */ |
else /* weirdly, </tag> precedes <tag> */ |
{ char fbuff[2048]; /* field buff for <tag>value</tag> */ |
{ char fbuff[4096]; /* field buff for <tag>value</tag> */ |
if ( (flen = ((int)(tagp1-tagp2))+tlen1) /* strlen(</tag>...<tag>) */ |
if ( (flen = ((int)(tagp1-tagp2))+tlen1) /* strlen(</tag>...<tag>) */ |
<= 0 ) goto end_of_job; /* must be internal error */ |
<= 0 ) goto end_of_job; /* must be internal error */ |
strcpy(fbuff,tag1); /* set opening <tag> */ |
strcpy(fbuff,tag1); /* set opening <tag> */ |
Line 8908 if ( fputs((istag?filebuff:value),fp) /*
|
Line 11001 if ( fputs((istag?filebuff:value),fp) /*
|
!= EOF ) status = 1; /* signal success if succeeded */ |
!= EOF ) status = 1; /* signal success if succeeded */ |
fclose ( fp ); /* close output file after writing */ |
fclose ( fp ); /* close output file after writing */ |
/* --- modify timestamp --- */ |
/* --- modify timestamp --- */ |
if ( istag ) /* log mod time in tagged file */ |
if ( status > 0 ) /*forget timestamp if write failed*/ |
if ( strstr(tag,"timestamp") == (char *)NULL ) /* but avoid recursion */ |
if ( istimestamp ) /* if we're updating timestamp */ |
{ char fbuff[2048]; /* field buff <timestamp> value */ |
if ( istag ) /* only log time in tagged file */ |
strcpy(fbuff,tag); /* tag modified */ |
if ( strstr(tag,"timestamp") == (char *)NULL ) /* but avoid recursion */ |
strcat(fbuff," modified at "); /* spacer */ |
{ char fbuff[2048]; /* field buff <timestamp> value */ |
strcat(fbuff,timestamp()); /* start with timestamp */ |
strcpy(fbuff,tag); /* tag modified */ |
rastwritefile(filename,"timestamp",fbuff,1); } |
strcat(fbuff," modified at "); /* spacer */ |
|
strcat(fbuff,timestamp(TZDELTA,0)); /* start with timestamp */ |
|
status = rastwritefile(filename,"timestamp",fbuff,1); } |
/* --- return status to caller --- */ |
/* --- return status to caller --- */ |
end_of_job: |
end_of_job: |
return ( status ); /* return status to caller */ |
return ( status ); /* return status to caller */ |
Line 8922 end_of_job:
|
Line 11017 end_of_job:
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
* Function: timestamp ( ) |
* Function: calendar ( year, month, day ) |
|
* Purpose: returns null-terminated character string containing |
|
* \begin{array}...\end{array} for the one-month calendar |
|
* specified by year=1973...2099 and month=1...12. |
|
* If either arg out-of-range, today's value is used. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: year (I) int containing 1973...2099 or 0 for current |
|
* year |
|
* month (I) int containing 1...12 or 0 for current month |
|
* day (I) int containing day to emphasize or 0 |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( char * ) char ptr to null-terminated buffer |
|
* containing \begin{array}...\end{array} |
|
* string that will render calendar for |
|
* requested month, or NULL for any error. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
char *calendar( int year, int month, int day ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
static char calbuff[4096]; /* calendar returned to caller */ |
|
time_t time_val = (time_t)(0); /* binary value returned by time() */ |
|
struct tm *tmstruct=(struct tm *)NULL, *localtime(); /* interpret time_val */ |
|
int yy=0, mm=0, dd=0; /* today (emphasize today's dd) */ |
|
int idd=1, iday=0, daynumber(); /* day-of-week for idd=1...31 */ |
|
char aval[64]; /* ascii day or 4-digit year */ |
|
/* --- calendar data --- */ |
|
static char *monthnames[] = { "?", "January", "February", "March", "April", |
|
"May", "June", "July", "August", "September", "October", |
|
"November", "December", "?" } ; |
|
static int modays[] = |
|
{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0 }; |
|
/* ------------------------------------------------------------------------- |
|
initialization |
|
-------------------------------------------------------------------------- */ |
|
/* --- get current date/time --- */ |
|
time((time_t *)(&time_val)); /* get date and time */ |
|
tmstruct = localtime((time_t *)(&time_val)); /* interpret time_val */ |
|
yy = 1900 + (int)(tmstruct->tm_year); /* current four-digit year */ |
|
mm = 1 + (int)(tmstruct->tm_mon); /* current month, 1-12 */ |
|
dd = (int)(tmstruct->tm_mday); /* current day, 1-31 */ |
|
/* --- check args --- */ |
|
if ( year<1973 || year>2099 ) year = yy; /* current year if out-of-bounds */ |
|
if ( month<1 || month>12 ) month = mm; /* current month if out-of-bounds */ |
|
if ( month==mm && year==yy && day==0 ) /* current month and default day */ |
|
day = dd; /* emphasize current day */ |
|
modays[2] = (year%4==0?29:28); /* Feb has 29 days in leap years */ |
|
/* --- initialize calendar string --- */ |
|
strcpy(calbuff,"{\\begin{gather}"); /* center `month year` above cal */ |
|
strcat(calbuff,"\\small\\text{"); /* month set in roman */ |
|
strcat(calbuff,monthnames[month]); /* insert month name */ |
|
strcat(calbuff," }"); /* add a space */ |
|
sprintf(aval,"%d",year); /* convert year to ascii */ |
|
strcat(calbuff,aval); /* add year */ |
|
strcat(calbuff,"\\\\"); /* end top row */ |
|
strcat(calbuff, /* now begin calendar arrayr */ |
|
"\\begin{array}{|c|c|c|c|c|c|c|CCCCCC} \\hline" |
|
"\\tiny\\text{Sun} & \\tiny\\text{Mon} & \\tiny\\text{Tue} &" |
|
"\\tiny\\text{Wed} & \\tiny\\text{Thu} & \\tiny\\text{Fri} &" |
|
"\\tiny\\text{Sat} \\\\ \\hline " ); |
|
/* ------------------------------------------------------------------------- |
|
generate calendar |
|
-------------------------------------------------------------------------- */ |
|
for ( idd=1; idd<=modays[month]; idd++ ) /* run through days of month */ |
|
{ |
|
/* --- get day-of-week for this day --- */ |
|
iday = 1 + (daynumber(year,month,idd)%7); /* 1=Monday...7=Sunday */ |
|
if ( iday == 7 ) iday = 0; /* now 0=Sunday...6=Saturday */ |
|
/* --- may need empty cells at beginning of month --- */ |
|
if ( idd == 1 ) /* first day of month */ |
|
if ( iday > 0 ) /* need to skip cells */ |
|
{ strcpy(aval,"\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\ &\\"); /*cells to skip*/ |
|
aval[3*iday] = '\000'; /*skip cells preceding 1st of month*/ |
|
strcat(calbuff,aval); } /* add skip string to buffer */ |
|
/* --- add idd to current cell --- */ |
|
sprintf(aval,"%d",idd); /* convert idd to ascii */ |
|
if ( idd == day /* emphasize today's date */ |
|
/*&& month==mm && year==yy*/ ) /* only if this month's calendar */ |
|
{ strcat(calbuff,"{\\fs{-1}\\left\\langle "); /*emphasize, 1 size smaller*/ |
|
strcat(calbuff,aval); /* put in idd */ |
|
strcat(calbuff,"\\right\\rangle}"); } /* finish emphasis */ |
|
else /* not today's date */ |
|
strcat(calbuff,aval); /* so just put in idd */ |
|
/* --- terminate cell --- */ |
|
if ( idd < modays[month] ) { /* not yet end-of-month */ |
|
if ( iday < 6 ) /* still have days left in week */ |
|
strcat(calbuff,"&"); /* new cell in same week */ |
|
else /* reached end-of-week */ |
|
strcat(calbuff,"\\\\ \\hline"); } /* so start new week */ |
|
} /* --- end-of-for(idd) --- */ |
|
strcat(calbuff,"\\\\ \\hline"); /* final underline at end-of-month */ |
|
/* --- return calendar to caller --- */ |
|
strcat(calbuff,"\\end{array}\\end{gather}}"); /* terminate array */ |
|
return ( calbuff ); /* back to caller with calendar */ |
|
} /* --- end-of-function calendar() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: timestamp ( tzdelta, ifmt ) |
* Purpose: returns null-terminated character string containing |
* Purpose: returns null-terminated character string containing |
* current date:time stamp as ccyy-mm-dd:hh:mm:ss{am,pm} |
* current date:time stamp as ccyy-mm-dd:hh:mm:ss{am,pm} |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Arguments: ( none ) |
* Arguments: tzdelta (I) integer, positive or negative, containing |
|
* containing number of hours to be added or |
|
* subtracted from system time (to accommodate |
|
* your desired time zone). |
|
* ifmt (I) integer containing 0 for default format |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Returns: ( char * ) ptr to null-terminated buffer |
* Returns: ( char * ) ptr to null-terminated buffer |
* containing current date:time stamp |
* containing current date:time stamp |
Line 8934 end_of_job:
|
Line 11135 end_of_job:
|
* Notes: o |
* Notes: o |
* ======================================================================= */ |
* ======================================================================= */ |
/* --- entry point --- */ |
/* --- entry point --- */ |
char *timestamp( ) |
char *timestamp( int tzdelta, int ifmt ) |
{ |
{ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
static char timebuff[64]; /* date:time buffer back to caller */ |
static char timebuff[256]; /* date:time buffer back to caller */ |
/*long time_val = 0L;*/ /* binary value returned by time() */ |
/*long time_val = 0L;*/ /* binary value returned by time() */ |
time_t time_val = (time_t)(0); /* binary value returned by time() */ |
time_t time_val = (time_t)(0); /* binary value returned by time() */ |
struct tm *tmstruct=(struct tm *)NULL, *localtime(); /* interpret time_val */ |
struct tm *tmstruct=(struct tm *)NULL, *localtime(); /* interpret time_val */ |
int year=0, hour=0,ispm=1; /* adjust year, and set am/pm hour */ |
int year=0, hour=0,ispm=1, /* adjust year, and set am/pm hour */ |
|
month=0, day=0; /* adjust day and month for delta */ |
|
int tzadjust(); /* time zone adjustment function */ |
|
int daynumber(); /* #days since Jan 1, 1973 */ |
|
static char *daynames[] = { "Monday", "Tuesday", "Wednesday", |
|
"Thursday", "Friday", "Saturday", "Sunday" } ; |
|
static char *monthnames[] = { "?", "January", "February", "March", "April", |
|
"May", "June", "July", "August", "September", "October", |
|
"November", "December", "?" } ; |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
get current date:time, adjust values, and and format stamp |
get current date:time, adjust values, and and format stamp |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
|
/* --- first init returned timebuff in case of any error --- */ |
|
*timebuff = '\000'; |
/* --- get current date:time --- */ |
/* --- get current date:time --- */ |
time((time_t *)(&time_val)); /* get date and time */ |
time((time_t *)(&time_val)); /* get date and time */ |
tmstruct = localtime((time_t *)(&time_val)); /* interpret time_val */ |
tmstruct = localtime((time_t *)(&time_val)); /* interpret time_val */ |
/* --- adjust year and hour as necessary --- */ |
/* --- extract fields --- */ |
year = (int)(tmstruct->tm_year); /* local copy of year */ |
year = (int)(tmstruct->tm_year); /* local copy of year, 0=1900 */ |
hour = (int)(tmstruct->tm_hour); /* local copy of hour */ |
month = (int)(tmstruct->tm_mon) + 1; /* local copy of month, 1-12 */ |
|
day = (int)(tmstruct->tm_mday); /* local copy of day, 1-31 */ |
|
hour = (int)(tmstruct->tm_hour); /* local copy of hour, 0-23 */ |
|
/* --- adjust year --- */ |
year += 1900; /* set century in year */ |
year += 1900; /* set century in year */ |
if ( hour < 12 ) /* am check */ |
/* --- adjust for timezone --- */ |
{ ispm=0; /* reset pm flag */ |
tzadjust(tzdelta,&year,&month,&day,&hour); |
if ( hour == 0 ) hour = 12; } /* set 00hrs = 12am */ |
/* --- check params --- */ |
if ( hour > 12 ) hour -= 12; /* pm check sets 13hrs to 1pm, etc */ |
if ( hour<0 || hour>23 |
|
|| day<1 || day>31 |
|
|| month<1 || month>12 |
|
|| year<1973 ) goto end_of_job; |
|
/* --- adjust hour for am/pm --- */ |
|
switch ( ifmt ) |
|
{ |
|
default: |
|
case 0: |
|
if ( hour < 12 ) /* am check */ |
|
{ ispm=0; /* reset pm flag */ |
|
if ( hour == 0 ) hour = 12; } /* set 00hrs = 12am */ |
|
if ( hour > 12 ) hour -= 12; /* pm check sets 13hrs to 1pm, etc */ |
|
break; |
|
} /* --- end-of-switch(ifmt) --- */ |
/* --- format date:time stamp --- */ |
/* --- format date:time stamp --- */ |
sprintf(timebuff,"%04d-%02d-%02d:%02d:%02d:%02d%s", |
switch ( ifmt ) |
year,(int)((tmstruct->tm_mon)+1),(int)(tmstruct->tm_mday), |
{ |
hour,(int)(tmstruct->tm_min),(int)(tmstruct->tm_sec),((ispm)?"pm":"am")); |
default: |
return ( timebuff ); /* return stamp to caller */ |
case 0: /* --- 2005-03-05:11:49:59am --- */ |
|
sprintf(timebuff,"%04d-%02d-%02d:%02d:%02d:%02d%s", year,month,day, |
|
hour,(int)(tmstruct->tm_min),(int)(tmstruct->tm_sec),((ispm)?"pm":"am")); |
|
break; |
|
case 1: /* --- Saturday, March 5, 2005 --- */ |
|
sprintf(timebuff,"%s, %s %d, %d", |
|
daynames[daynumber(year,month,day)%7],monthnames[month],day,year); |
|
break; |
|
case 2: /* --- Saturday, March 5, 2005, 11:49:59am --- */ |
|
sprintf(timebuff,"%s, %s %d, %d, %d:%02d:%02d%s", |
|
daynames[daynumber(year,month,day)%7],monthnames[month],day,year, |
|
hour,(int)(tmstruct->tm_min),(int)(tmstruct->tm_sec),((ispm)?"pm":"am")); |
|
break; |
|
case 3: /* --- 11:49:59am --- */ |
|
sprintf(timebuff,"%d:%02d:%02d%s", |
|
hour,(int)(tmstruct->tm_min),(int)(tmstruct->tm_sec),((ispm)?"pm":"am")); |
|
break; |
|
} /* --- end-of-switch(ifmt) --- */ |
|
end_of_job: |
|
return ( timebuff ); /* return stamp to caller */ |
} /* --- end-of-function timestamp() --- */ |
} /* --- end-of-function timestamp() --- */ |
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
* Function: dtoa ( dblval, npts ) |
* Function: tzadjust ( tzdelta, year, month, day, hour ) |
|
* Purpose: Adjusts hour, and day,month,year if necessary, |
|
* by delta increment to accommodate your time zone. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: tzdelta (I) integer, positive or negative, containing |
|
* containing number of hours to be added or |
|
* subtracted from given time (to accommodate |
|
* your desired time zone). |
|
* year (I) addr of int containing 4-digit year |
|
* month (I) addr of int containing month 1=Jan - 12=Dec. |
|
* day (I) addr of int containing day 1-31 for Jan. |
|
* hour (I) addr of int containing hour 0-23 |
|
* Returns: ( int ) 1 for success, or 0 for error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int tzadjust ( int tzdelta, int *year, int *month, int *day, int *hour ) |
|
{ |
|
/* -------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int yy = *year, mm = *month, dd = *day, hh = *hour; /*dereference args*/ |
|
/* --- calendar data --- */ |
|
static int modays[] = |
|
{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 0 }; |
|
/* -------------------------------------------------------------------------- |
|
check args |
|
-------------------------------------------------------------------------- */ |
|
if ( mm<1 || mm>12 ) return(-1); /* bad month */ |
|
if ( dd<1 || dd>modays[mm] ) return(-1); /* bad day */ |
|
if ( hh<0 || hh>23 ) return(-1); /* bad hour */ |
|
if ( tzdelta>23 || tzdelta<(-23) ) return(-1); /* bad tzdelta */ |
|
/* -------------------------------------------------------------------------- |
|
make adjustments |
|
-------------------------------------------------------------------------- */ |
|
/* --- adjust hour --- */ |
|
hh += tzdelta; /* apply caller's delta */ |
|
/* --- adjust for feb 29 --- */ |
|
modays[2] = (yy%4==0?29:28); /* Feb has 29 days in leap years */ |
|
/* --- adjust day --- */ |
|
if ( hh < 0 ) /* went to preceding day */ |
|
{ dd--; hh += 24; } |
|
if ( hh > 23 ) /* went to next day */ |
|
{ dd++; hh -= 24; } |
|
/* --- adjust month --- */ |
|
if ( dd < 1 ) /* went to preceding month */ |
|
{ mm--; dd = modays[mm]; } |
|
if ( dd > modays[mm] ) /* went to next month */ |
|
{ mm++; dd = 1; } |
|
/* --- adjust year --- */ |
|
if ( mm < 1 ) /* went to preceding year */ |
|
{ yy--; mm = 12; dd = modays[mm]; } |
|
if ( mm > 12 ) /* went to next year */ |
|
{ yy++; mm = 1; dd = 1; } |
|
/* --- back to caller --- */ |
|
*year=yy; *month=mm; *day=dd; *hour=hh; /* reset adjusted args */ |
|
return ( 1 ); |
|
} /* --- end-of-function tzadjust() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: daynumber ( year, month, day ) |
|
* Purpose: Returns number of actual calendar days from Jan 1, 1973 |
|
* to the given date (e.g., bvdaynumber(1974,1,1)=365). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: year (I) int containing year -- may be either 1995 or |
|
* 95, or may be either 2010 or 110 for those |
|
* years. |
|
* month (I) int containing month, 1=Jan thru 12=Dec. |
|
* day (I) int containing day of month, 1-31 for Jan, etc. |
|
* Returns: ( int ) Number of days from Jan 1, 1973 to given date, |
|
* or -1 for error (e.g., year<1973). |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int daynumber ( int year, int month, int day ) |
|
{ |
|
/* -------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
/* --- returned value (note: returned as a default "int") --- */ |
|
int ndays; /* #days since jan 1, year0 */ |
|
/* --- initial conditions --- */ |
|
static int year0 = 73, /* jan 1 was a monday, 72 was a leap */ |
|
days4yrs = 1461, /* #days in 4 yrs = 365*4 + 1 */ |
|
days1yr = 365; |
|
/* --- table of accumulated days per month (last index not used) --- */ |
|
static int modays[] = |
|
{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }; |
|
/* --- variables for #days since day0 --- */ |
|
int nyears, nfouryrs; /*#years, #4-yr periods since year0*/ |
|
/* -------------------------------------------------------------------------- |
|
Check input |
|
-------------------------------------------------------------------------- */ |
|
if ( month < 1 || month > 12 ) /*month used as index, so must be ok*/ |
|
return ( -1 ); /* otherwise, forget it */ |
|
if ( year >= 1900 ) year -= 1900; /*use two-digit years (3 after 2000)*/ |
|
/* -------------------------------------------------------------------------- |
|
Find #days since jan 1, 1973 |
|
-------------------------------------------------------------------------- */ |
|
/* --- figure #complete 4-year periods and #remaining yrs till current --- */ |
|
nyears = year - year0; /* #years since year0 */ |
|
if ( nyears < 0 ) return ( -1 ); /* we're not working backwards */ |
|
nfouryrs = nyears/4; /* #complete four-year periods */ |
|
nyears -= (4*nfouryrs); /* remainder excluding current year*/ |
|
/* --- #days from jan 1, year0 till jan 1, this year --- */ |
|
ndays = (days4yrs*nfouryrs) /* #days in 4-yr periods */ |
|
+ (days1yr*nyears); /* +remaining days */ |
|
/*if ( year > 100 ) ndays--;*/ /* subtract leap year for 2000AD */ |
|
/* --- add #days within current year --- */ |
|
ndays += (modays[month-1] + (day-1)); |
|
/* --- may need an extra day if current year is a leap year --- */ |
|
if ( nyears == 3 ) /*three preceding yrs so this is 4th*/ |
|
{ if ( month > 2 ) /* past feb so need an extra day */ |
|
/*if ( year != 100 )*/ /* unless it's 2000AD */ |
|
ndays++; } /* so add it in */ |
|
return ( (int)(ndays) ); /* #days back to caller */ |
|
} /* --- end-of-function daynumber() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: dbltoa ( dblval, npts ) |
* Purpose: Converts double to ascii, in financial format |
* Purpose: Converts double to ascii, in financial format |
* (e.g., comma-separated and negatives enclosed in ()'s). |
* (e.g., comma-separated and negatives enclosed in ()'s). |
* ------------------------------------------------------------------------- |
* ------------------------------------------------------------------------- |
Line 8980 return ( timebuff ); /* return stamp t
|
Line 11350 return ( timebuff ); /* return stamp t
|
* Notes: o |
* Notes: o |
* ======================================================================= */ |
* ======================================================================= */ |
/* --- entry point --- */ |
/* --- entry point --- */ |
char *dtoa ( dblval, npts ) |
char *dbltoa ( double dblval, int npts ) |
double dblval; |
/* double dblval; |
int npts; |
int npts; */ |
{ |
{ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
------------------------------------------------------------------------- */ |
------------------------------------------------------------------------- */ |
static char finval[128]; /* buffer returned to caller */ |
static char finval[256]; /* buffer returned to caller */ |
static char digittbl[32]="0123456789*"; /* table of ascii decimal digits */ |
static char digittbl[32]="0123456789*"; /* table of ascii decimal digits */ |
char *finptr = finval; /* ptr to next char being converted*/ |
char *finptr = finval; /* ptr to next char being converted*/ |
double floor(); /* integer which is glb(double) */ |
double floor(); /* integer which is glb(double) */ |
Line 9048 End-of-Job
|
Line 11418 End-of-Job
|
if ( isneg ) *finptr++ = ')'; /*trailing paren for negative value*/ |
if ( isneg ) *finptr++ = ')'; /*trailing paren for negative value*/ |
*finptr = '\000'; /* null-terminate converted double */ |
*finptr = '\000'; /* null-terminate converted double */ |
return ( finval ); /* converted double back to caller */ |
return ( finval ); /* converted double back to caller */ |
} /* --- end-of-function dtoa() --- */ |
} /* --- end-of-function dbltoa() --- */ |
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
Line 9152 for ( irow=0; irow<rp->height; irow++ )
|
Line 11522 for ( irow=0; irow<rp->height; irow++ )
|
&& bytemap[ipixel] > blackscale ) /* weighted avg > blackscale */ |
&& bytemap[ipixel] > blackscale ) /* weighted avg > blackscale */ |
bytemap[ipixel] = grayscale-1; } /* so force it entirely black */ |
bytemap[ipixel] = grayscale-1; } /* so force it entirely black */ |
/*--- only anti-alias pixels whose adjacent pixels fall within bounds ---*/ |
/*--- only anti-alias pixels whose adjacent pixels fall within bounds ---*/ |
if ( !iscenter ) /* apply min/maxadjacent test */ |
if ( !iscenter ) { /* apply min/maxadjacent test */ |
if ( isminmaxwts ) /* min/max refer to adjacent weights*/ |
if ( isminmaxwts ) /* min/max refer to adjacent weights*/ |
{ if ( wadjacent < minadjacent /* wts of adjacent points too low */ |
{ if ( wadjacent < minadjacent /* wts of adjacent points too low */ |
|| wadjacent > maxadjacent ) /* or too high */ |
|| wadjacent > maxadjacent ) /* or too high */ |
Line 9160 for ( irow=0; irow<rp->height; irow++ )
|
Line 11530 for ( irow=0; irow<rp->height; irow++ )
|
else /* min/max refer to #adjacent points*/ |
else /* min/max refer to #adjacent points*/ |
{ if ( nadjacent < minadjacent /* too few adjacent points black */ |
{ if ( nadjacent < minadjacent /* too few adjacent points black */ |
|| nadjacent > maxadjacent ) /* or too many */ |
|| nadjacent > maxadjacent ) /* or too many */ |
bytemap[ipixel] = 0; } /* so leave point white */ |
bytemap[ipixel] = 0; } } /* so leave point white */ |
} /* --- end-of-for(irow,icol) --- */ |
} /* --- end-of-for(irow,icol) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Back to caller with gray-scale anti-aliased bytemap |
Back to caller with gray-scale anti-aliased bytemap |
Line 9202 int width=rp->width, height=rp->height,
|
Line 11572 int width=rp->width, height=rp->height,
|
icol = 0, irow = 0, /* width, height indexes */ |
icol = 0, irow = 0, /* width, height indexes */ |
imap = (-1); /* pixel index = icol + irow*width */ |
imap = (-1); /* pixel index = icol + irow*width */ |
int bgbitval=0, fgbitval=1; /* background, foreground bitval */ |
int bgbitval=0, fgbitval=1; /* background, foreground bitval */ |
|
int isfirstaa = 1; /*debugging switch signals 1st pixel*/ |
#if 0 |
#if 0 |
int totwts=12, wts[9]={1,1,1, 1,4,1, 1,1,1}; /* pnmalias default wts */ |
int totwts=12, wts[9]={1,1,1, 1,4,1, 1,1,1}; /* pnmalias default wts */ |
int totwts=16, wts[9]={1,2,1, 2,4,2, 1,2,1}; /* weights */ |
int totwts=16, wts[9]={1,2,1, 2,4,2, 1,2,1}; /* weights */ |
Line 9279 for ( irow=0; irow<height; irow++ )
|
Line 11650 for ( irow=0; irow<height; irow++ )
|
(eebitval==fgbitval && ssbitval==fgbitval) || /*lower-right edge*/ |
(eebitval==fgbitval && ssbitval==fgbitval) || /*lower-right edge*/ |
(ssbitval==fgbitval && wwbitval==fgbitval) || /*lower-left edge*/ |
(ssbitval==fgbitval && wwbitval==fgbitval) || /*lower-left edge*/ |
(wwbitval==fgbitval && nnbitval==fgbitval) ; /*upper-left edge*/ |
(wwbitval==fgbitval && nnbitval==fgbitval) ; /*upper-left edge*/ |
|
/* ---check top/bot left/right edges for corners (added by j.forkosh)--- */ |
|
if ( 1 ) { /* true to perform test */ |
|
int isbghorz=0, isfghorz=0, isbgvert=0, isfgvert=0; /* horz/vert edges */ |
|
isbghorz = /* top or bottom edge is all bg */ |
|
(nwbitval+nnbitval+nebitval == 3*bgbitval) || /* top edge bg */ |
|
(swbitval+ssbitval+sebitval == 3*bgbitval) ; /* bottom edge bg */ |
|
isfghorz = /* top or bottom edge is all fg */ |
|
(nwbitval+nnbitval+nebitval == 3*fgbitval) || /* top edge fg */ |
|
(swbitval+ssbitval+sebitval == 3*fgbitval) ; /* bottom edge fg */ |
|
isbgvert = /* left or right edge is all bg */ |
|
(nwbitval+wwbitval+swbitval == 3*bgbitval) || /* left edge bg */ |
|
(nebitval+eebitval+sebitval == 3*bgbitval) ; /* right edge bg */ |
|
isfgvert = /* left or right edge is all bg */ |
|
(nwbitval+wwbitval+swbitval == 3*fgbitval) || /* left edge fg */ |
|
(nebitval+eebitval+sebitval == 3*fgbitval) ; /* right edge fg */ |
|
if ( (isbghorz && isbgvert && (bitval==fgbitval)) /* we're at an...*/ |
|
|| (isfghorz && isfgvert && (bitval==bgbitval)) ) /*...inside corner */ |
|
continue; /* don't antialias */ |
|
} /* --- end-of-if(1) --- */ |
|
/* --- check #gaps for checkerboard (added by j.forkosh) --- */ |
|
if ( 0 ) { /* true to perform test */ |
|
int ngaps=0, mingaps=1,maxgaps=2; /* count #fg/bg flips (max=4 noop) */ |
|
if ( nwbitval!=nnbitval ) ngaps++; /* upper-left =? upper */ |
|
if ( nnbitval!=nebitval ) ngaps++; /* upper =? upper-right */ |
|
if ( nebitval!=eebitval ) ngaps++; /* upper-right =? right */ |
|
if ( eebitval!=sebitval ) ngaps++; /* right =? lower-right */ |
|
if ( sebitval!=ssbitval ) ngaps++; /* lower-right =? lower */ |
|
if ( ssbitval!=swbitval ) ngaps++; /* lower =? lower-left */ |
|
if ( swbitval!=wwbitval ) ngaps++; /* lower-left =? left */ |
|
if ( wwbitval!=nwbitval ) ngaps++; /* left =? upper-left */ |
|
if ( ngaps > 0 ) ngaps /= 2; /* each gap has 2 bg/fg flips */ |
|
if ( ngaps<mingaps || ngaps>maxgaps ) continue; |
|
} /* --- end-of-if(1) --- */ |
/* --- antialias if necessary --- */ |
/* --- antialias if necessary --- */ |
if ( (isbgalias && isbgedge) /* alias pixel surrounding bg */ |
if ( (isbgalias && isbgedge) /* alias pixel surrounding bg */ |
|| (isfgalias && isfgedge) /* alias pixel surrounding fg */ |
|| (isfgalias && isfgedge) /* alias pixel surrounding fg */ |
Line 9291 for ( irow=0; irow<height; irow++ )
|
Line 11695 for ( irow=0; irow<height; irow++ )
|
double aawtval = ((double)aasumval)/((double)totwts); /* weighted val */ |
double aawtval = ((double)aasumval)/((double)totwts); /* weighted val */ |
aabyteval= (int)(((double)(grayscale-1))*aawtval+0.5); /*0...grayscale-1*/ |
aabyteval= (int)(((double)(grayscale-1))*aawtval+0.5); /*0...grayscale-1*/ |
bytemap[imap] = (intbyte)(aabyteval); /* set antialiased pixel */ |
bytemap[imap] = (intbyte)(aabyteval); /* set antialiased pixel */ |
if ( msglevel>=99 && msgfp!=NULL ) fprintf(msgfp, /* debugging */ |
if ( msglevel>=99 && msgfp!=NULL ) { fprintf(msgfp, /*diagnostic output*/ |
"aapnm> irow,icol,imap=%d,%d,%d aawtval=%.4f aabyteval=%d\n", |
"%s> irow,icol,imap=%d,%d,%d aawtval=%.4f aabyteval=%d\n", |
|
(isfirstaa?"aapnm algorithm":"aapnm"), |
irow,icol,imap, aawtval,aabyteval); |
irow,icol,imap, aawtval,aabyteval); |
|
isfirstaa = 0; } |
} /* --- end-of-if(isedge) --- */ |
} /* --- end-of-if(isedge) --- */ |
} /* --- end-of-for(irow,icol) --- */ |
} /* --- end-of-for(irow,icol) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 9305 Back to caller with gray-scale anti-alia
|
Line 11711 Back to caller with gray-scale anti-alia
|
|
|
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: aapnmlookup ( rp, bytemap, grayscale ) |
|
* Purpose: calculates a lowpass anti-aliased bytemap |
|
* for rp->bitmap, with each byte 0...grayscale-1, |
|
* based on the pnmalias.c algorithm. |
|
* This version uses aagridnum() and aapatternnum() lookups |
|
* to interpret 3x3 lowpass pixel grids. |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster whose bitmap |
|
* is to be anti-aliased |
|
* bytemap (O) intbyte * to bytemap, calculated |
|
* by applying pnm-based filter to rp->bitmap, |
|
* and returned (as you'd expect) in 1-to-1 |
|
* addressing correspondence with rp->bitmap |
|
* grayscale (I) int containing number of grayscales |
|
* to be calculated, 0...grayscale-1 |
|
* (should typically be given as 256) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 1=success, 0=any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Based on the pnmalias.c algorithm in the netpbm package |
|
* on sourceforge. |
|
* o This version uses aagridnum() and aapatternnum() lookups |
|
* to interpret 3x3 lowpass pixel grids. |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aapnmlookup (raster *rp, intbyte *bytemap, int grayscale) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int width=rp->width, height=rp->height, /* width, height of raster */ |
|
icol = 0, irow = 0, /* width, height indexes */ |
|
imap = (-1); /* pixel index = icol + irow*width */ |
|
int bgbitval=0, fgbitval=1; /* background, foreground bitval */ |
|
int isfirstaa = 1; /*debugging switch signals 1st pixel*/ |
|
int aacenterwt=centerwt, aaadjacentwt=adjacentwt, aacornerwt=cornerwt, |
|
totwts = centerwt + 4*(adjacentwt+cornerwt); /*pnmalias default wts*/ |
|
int isfgalias = fgalias, /*(1) true to antialias fg bits */ |
|
isfgonly = fgonly, /*(0) true to only antialias fg bits*/ |
|
isbgalias = bgalias, /*(0) true to antialias bg bits */ |
|
isbgonly = bgonly; /*(0) true to only antialias bg bits*/ |
|
int gridnum=(-1), aagridnum(), /* grid# for 3x3 grid at irow,icol */ |
|
patternum=(-1), aapatternnum(); /*pattern#, 1-51, for input gridnum*/ |
|
int aapatterns(); /* to antialias special patterns */ |
|
/* --- |
|
* pattern number data |
|
* ------------------- */ |
|
/* --- number of adjacent fg pixels set in pattern --- */ |
|
static int nadjacents[] = { -1, /* #adjacent fg pixels for pattern */ |
|
0, 4, 0, 1, 4, 3, 1, 0, 1, 0, /* 1-10 */ |
|
2, 2, 3, 4, 3, 4, 2, 2, 1, 2, /* 11-20 */ |
|
1, 2, 1, 2, 0, 1, 3, 2, 3, 2, /* 21-30 */ |
|
3, 2, 3, 2, 4, 3, 1, 2, 2, 2, /* 31-40 */ |
|
2, 1, 2, 2, 3, 0, 3, 2, 2, 1, 4, /* 41-51 */ |
|
-1 } ; /* --- end-of-nadjacents[] --- */ |
|
/* --- number of corner fg pixels set in pattern --- */ |
|
static int ncorners[] = { -1, /* #corner fg pixels for pattern */ |
|
0, 4, 1, 0, 3, 4, 1, 2, 1, 2, /* 1-10 */ |
|
0, 0, 3, 2, 3, 2, 4, 4, 2, 1, /* 11-20 */ |
|
2, 1, 2, 1, 3, 2, 0, 1, 2, 3, /* 21-30 */ |
|
2, 3, 2, 3, 1, 2, 4, 3, 2, 2, /* 31-40 */ |
|
2, 3, 2, 2, 1, 4, 1, 2, 2, 3, 0, /* 41-51 */ |
|
-1 } ; /* --- end-of-ncorners[] --- */ |
|
/* --- 0,1,2=pattern contains horizontal bg,fg,both edge; -1=no edge --- */ |
|
static int horzedges[] = { -1, /* 0,1,2 = horz bg,fg,both edge */ |
|
0, 1, 0, 0, 1, 1, 0, 0, 0, -1, /* 1-10 */ |
|
0, -1, 1, 1, 1, -1, 1, -1, 2, 0, /* 11-20 */ |
|
-1, -1, -1, 0, -1, -1, -1, -1, 2, 1, /* 21-30 */ |
|
-1, -1, -1, 1, -1, -1, -1, -1, 2, -1, /* 31-40 */ |
|
-1, 1, 1, -1, -1, -1, 0, 0, -1, -1, -1, /* 41-51 */ |
|
-1 } ; /* --- end-of-horzedges[] --- */ |
|
/* --- 0,1,2=pattern contains vertical bg,fg,both edge; -1=no edge --- */ |
|
static int vertedges[] = { -1, /* 0,1,2 = vert bg,fg,both edge */ |
|
0, 1, 0, 0, 1, 1, 0, -1, -1, -1, /* 1-10 */ |
|
0, 0, 1, -1, -1, -1, 1, 1, -1, -1, /* 11-20 */ |
|
-1, 0, 0, 0, -1, -1, 0, -1, -1, -1, /* 21-30 */ |
|
-1, 1, 1, 1, -1, -1, 1, -1, -1, -1, /* 31-40 */ |
|
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 41-51 */ |
|
-1 } ; /* --- end-of-vertedges[] --- */ |
|
/* --- 0,1,2=pattern contains diagonal bg,fg,both edge; -1=no edge --- */ |
|
static int diagedges[] = { -1, /* 0,1,2 = diag bg,fg,both edge */ |
|
0, 1, 0, 0, 1, 1, 0, 0, 0, 0, /* 1-10 */ |
|
2, -1, 1, 1, 1, 1, 1, -1, 0, 2, /* 11-20 */ |
|
0, -1, 0, 2, 0, -1, 1, 1, 1, 1, /* 21-30 */ |
|
1, -1, 1, 2, 1, 1, -1, 1, 2, -1, /* 31-40 */ |
|
1, 0, -1, 2, 1, 0, 1, -1, 1, -1, 1, /* 41-51 */ |
|
-1 } ; /* --- end-of-diagedges[] --- */ |
|
/* ------------------------------------------------------------------------- |
|
Calculate bytemap as 9-point weighted average over bitmap |
|
-------------------------------------------------------------------------- */ |
|
for ( irow=0; irow<height; irow++ ) |
|
for ( icol=0; icol<width; icol++ ) |
|
{ |
|
/* --- local allocations and declarations --- */ |
|
int bitval=0, /* value of rp bit at irow,icol */ |
|
isbgdiag=0, isfgdiag=0, /*does pixel border a bg or fg edge*/ |
|
aabyteval=0; /* antialiased (or unchanged) value*/ |
|
/* --- get gridnum and center bit value, init aabyteval --- */ |
|
imap++; /* first set imap=icol + irow*width*/ |
|
gridnum = aagridnum(rp,irow,icol); /*grid# coding 3x3 grid at irow,icol*/ |
|
bitval = (gridnum&1); /* center bit set if gridnum odd */ |
|
aabyteval = (intbyte)(bitval==bgbitval?0:grayscale-1); /* default aa val */ |
|
bytemap[imap] = (intbyte)(aabyteval); /* init antialiased pixel */ |
|
if ( gridnum<0 || gridnum>511 ) continue; /* gridnum out of bounds*/ |
|
/* --- check if we're antialiasing this pixel --- */ |
|
if ( (isbgonly && bitval==fgbitval) /* only antialias background bit */ |
|
|| (isfgonly && bitval==bgbitval) ) /* only antialias foreground bit */ |
|
continue; /* leave default and do next bit */ |
|
/* --- look up pattern number, 1-51, corresponding to input gridnum --- */ |
|
patternum = aapatternnum(gridnum); /* look up pattern number */ |
|
if ( patternum<1 || patternum>51 ) continue; /* some internal error */ |
|
/* --- special pattern number processing --- */ |
|
if ( (aabyteval = aapatterns(rp,irow,icol,gridnum,patternum,grayscale)) |
|
>= 0 ) { /* special processing for pattern */ |
|
bytemap[imap] = (intbyte)(aabyteval); /* set antialiased pixel */ |
|
continue; } /* and continue with next pixel */ |
|
/* --- check for diagonal edges --- */ |
|
isbgdiag = ( diagedges[patternum]==2 || /*current pixel borders a bg edge*/ |
|
diagedges[patternum]==0 ); |
|
isfgdiag = ( diagedges[patternum]==2 || /*current pixel borders a fg edge*/ |
|
diagedges[patternum]==1 ); |
|
/* ---check top/bot left/right edges for corners (added by j.forkosh)--- */ |
|
if ( 1 ) { /* true to perform test */ |
|
int isbghorz=0, isfghorz=0, isbgvert=0, isfgvert=0, /* horz/vert edges */ |
|
horzedge=horzedges[patternum], vertedge=vertedges[patternum]; |
|
isbghorz = (horzedge==2||horzedge==0); /* top or bottom edge is all bg */ |
|
isfghorz = (horzedge==2||horzedge==1); /* top or bottom edge is all fg */ |
|
isbgvert = (vertedge==2||vertedge==0); /* left or right edge is all bg */ |
|
isfgvert = (vertedge==2||vertedge==1); /* left or right edge is all fg */ |
|
if ( (isbghorz && isbgvert && (bitval==fgbitval)) /* we're at an...*/ |
|
|| (isfghorz && isfgvert && (bitval==bgbitval)) ) /*...inside corner */ |
|
continue; /* don't antialias */ |
|
} /* --- end-of-if(1) --- */ |
|
#if 0 |
|
/* --- check #gaps for checkerboard (added by j.forkosh) --- */ |
|
if ( 0 ) { /* true to perform test */ |
|
int ngaps=0, mingaps=1,maxgaps=2; /* count #fg/bg flips (max=4 noop) */ |
|
if ( nwbitval!=nnbitval ) ngaps++; /* upper-left =? upper */ |
|
if ( nnbitval!=nebitval ) ngaps++; /* upper =? upper-right */ |
|
if ( nebitval!=eebitval ) ngaps++; /* upper-right =? right */ |
|
if ( eebitval!=sebitval ) ngaps++; /* right =? lower-right */ |
|
if ( sebitval!=ssbitval ) ngaps++; /* lower-right =? lower */ |
|
if ( ssbitval!=swbitval ) ngaps++; /* lower =? lower-left */ |
|
if ( swbitval!=wwbitval ) ngaps++; /* lower-left =? left */ |
|
if ( wwbitval!=nwbitval ) ngaps++; /* left =? upper-left */ |
|
if ( ngaps > 0 ) ngaps /= 2; /* each gap has 2 bg/fg flips */ |
|
if ( ngaps<mingaps || ngaps>maxgaps ) continue; |
|
} /* --- end-of-if(1) --- */ |
|
#endif |
|
/* --- antialias if necessary --- */ |
|
if ( (isbgalias && isbgdiag) /* alias pixel surrounding bg */ |
|
|| (isfgalias && isfgdiag) /* alias pixel surrounding fg */ |
|
|| (isbgdiag && isfgdiag) ) /* neighboring fg and bg pixel */ |
|
{ |
|
int aasumval = /* sum wts[]*bitmap[] */ |
|
aacenterwt*bitval + /* apply centerwt to center pixel */ |
|
aaadjacentwt*nadjacents[patternum] + /* similarly for adjacents */ |
|
aacornerwt*ncorners[patternum]; /* and corners */ |
|
double aawtval = ((double)aasumval)/((double)totwts); /* weighted val */ |
|
aabyteval= (int)(((double)(grayscale-1))*aawtval+0.5); /*0...grayscale-1*/ |
|
bytemap[imap] = (intbyte)(aabyteval); /* set antialiased pixel */ |
|
if ( msglevel>=99 && msgfp!=NULL ) { fprintf(msgfp, /*diagnostic output*/ |
|
"%s> irow,icol,imap=%d,%d,%d aawtval=%.4f aabyteval=%d", |
|
(isfirstaa?"aapnmlookup algorithm":"aapnm"), |
|
irow,icol,imap, aawtval,aabyteval); |
|
if ( msglevel < 100 ) fprintf(msgfp,"\n"); /* no more output */ |
|
else fprintf(msgfp,", grid#,pattern#=%d,%d\n",gridnum,patternum); |
|
isfirstaa = 0; } |
|
} /* --- end-of-if(isedge) --- */ |
|
} /* --- end-of-for(irow,icol) --- */ |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with gray-scale anti-aliased bytemap |
|
-------------------------------------------------------------------------- */ |
|
/*end_of_job:*/ |
|
return ( 1 ); |
|
} /* --- end-of-function aapnmlookup() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aapatterns ( rp, irow, icol, gridnum, patternum, grayscale ) |
|
* Purpose: For patterns requireing special processing, |
|
* calculates anti-aliased value for pixel at irow,icol, |
|
* whose surrounding 3x3 pixel grid is coded by gridnum |
|
* (which must correspond to a pattern requiring special |
|
* processing). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster whose bitmap |
|
* is to be anti-aliased |
|
* irow (I) int containing row, 0...height-1, |
|
* of pixel to be antialiased |
|
* icol (I) int containing col, 0...width-1, |
|
* of pixel to be antialiased |
|
* gridnum (I) int containing 0...511 corresponding to |
|
* 3x3 pixel grid surrounding irow,icol |
|
* patternum (I) int containing 1...51 pattern# of |
|
* the 3x3 grid surrounding irow,icol |
|
* grayscale (I) int containing number of grayscales |
|
* to be calculated, 0...grayscale-1 |
|
* (should typically be given as 256) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 0...grayscale-1 for success, |
|
* -1 = error, or no special processing required |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aapatterns (raster *rp, int irow, int icol, |
|
int gridnum, int patternum, int grayscale) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int aaval = (-1); /* antialiased value returned */ |
|
int iscenter = (gridnum&1); /* true if center pixel set/black */ |
|
int aapatternnum(), /* if patternum not supplied */ |
|
aapattern1124(), /* routine for patterns #11,24 */ |
|
aapattern19(), /* special routine for pattern #19 */ |
|
aapattern20(), /* special routine for pattern #20 */ |
|
aapattern39(); /* special routine for pattern #39 */ |
|
/* ------------------------------------------------------------------------- |
|
special pattern number processing |
|
-------------------------------------------------------------------------- */ |
|
if ( 1 ) { |
|
if ( patternum < 1 ) /* pattern# not supplied by caller */ |
|
patternum = aapatternnum(gridnum); /* so look it up ourselves */ |
|
switch ( patternum ) { |
|
default: break; /* no special processing */ |
|
case 11: |
|
case 24: aaval = aapattern1124(rp,irow,icol,gridnum,grayscale); break; |
|
case 19: aaval = aapattern19(rp,irow,icol,gridnum,grayscale); break; |
|
case 20: aaval = aapattern20(rp,irow,icol,gridnum,grayscale); break; |
|
case 39: aaval = aapattern39(rp,irow,icol,gridnum,grayscale); break; |
|
/* case 24: if ( (gridnum&1) == 0 ) aaval=0; break; */ |
|
case 29: aaval = (iscenter?grayscale-1:0); break; /* no antialiasing */ |
|
} /* --- end-of-switch(patternum) --- */ |
|
} /* --- end-of-if() --- */ |
|
return ( aaval ); /* return antialiased val to caller*/ |
|
} /* --- end-of-function aapatterns() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aapattern1124 ( rp, irow, icol, gridnum, grayscale ) |
|
* Purpose: calculates anti-aliased value for pixel at irow,icol, |
|
* whose surrounding 3x3 pixel grid is coded by gridnum |
|
* (which must correspond to pattern #11 or #24). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster whose bitmap |
|
* is to be anti-aliased |
|
* irow (I) int containing row, 0...height-1, |
|
* of pixel to be antialiased |
|
* icol (I) int containing col, 0...width-1, |
|
* of pixel to be antialiased |
|
* gridnum (I) int containing 0...511 corresponding to |
|
* 3x3 pixel grid surrounding irow,icol |
|
* grayscale (I) int containing number of grayscales |
|
* to be calculated, 0...grayscale-1 |
|
* (should typically be given as 256) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 0...grayscale-1 for success, -1=any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Handles the eight gridnum's |
|
* (gridnum/2 shown to eliminate irrelevant low-order bit) |
|
* --- --- -*- -*- |
|
* --* = 10 *-- = 18 --* = 72 *-- = 80 (pattern$11) |
|
* -*- -*- --- --- |
|
* |
|
* --- --- -** **- |
|
* --* = 11 *-- = 22 --* = 104 *-- = 208 (pattern$24) |
|
* -** **- --- --- |
|
* o For black * center pixel, using grid#10 as an example, |
|
* pixel stays --- antialiased ---* |
|
* black if -*** if part of -** |
|
* part of a -*- a diagonal -*- |
|
* corner, eg, * line, eg, * |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aapattern1124 (raster *rp, int irow, int icol, |
|
int gridnum, int grayscale) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int aaval = (-1); /* antialiased value returned */ |
|
int iscenter = gridnum&1; /* true if pixel at irow,icol black*/ |
|
int patternum = 24; /* init for pattern#24 default */ |
|
pixbyte *bitmap = rp->pixmap; /* local rp->pixmap ptr */ |
|
int width=rp->width, height=rp->height; /* width, height of raster */ |
|
int jrow=irow, jcol=icol; /* corner or diagonal row,col */ |
|
int vertcornval=0, horzcornval=0, /* vertical, horizontal corner bits*/ |
|
topdiagval=0, botdiagval=0, /* upper,lower diagonal pixel bits */ |
|
cornval=0, diagval=0; /* vert+horzcorn, top+botdiag */ |
|
int hdirection=99, vdirection=99, /* horz,vert corner direction */ |
|
hturn=99,vturn=99, aafollowline(); /* follow corner till turns */ |
|
/* ------------------------------------------------------------------------- |
|
Check corner and diagonal pixels |
|
-------------------------------------------------------------------------- */ |
|
if ( 0 ) goto end_of_job; /* true to turn off pattern1124 */ |
|
switch ( gridnum/2 ) { /* check pattern#11,24 corner, diag*/ |
|
default: goto end_of_job; /* not a pattern#11,24 gridnum */ |
|
case 10: patternum=11; case 11: |
|
hdirection = 2; vdirection = -1; /* directions to follow corner */ |
|
if ( (jrow=irow+2) < height ) { /* vert corner below center pixel */ |
|
vertcornval = getlongbit(bitmap,(icol+jrow*width)); |
|
if ( (icol-1) >= 0 ) /* lower diag left of center */ |
|
botdiagval = getlongbit(bitmap,((icol-1)+jrow*width)); } |
|
if ( (jcol=icol+2) < width ) { /* horz corner right of center */ |
|
horzcornval = getlongbit(bitmap,(jcol+irow*width)); |
|
if ( (irow-1) >= 0 ) /* upper diag above center */ |
|
topdiagval = getlongbit(bitmap,(jcol+(irow-1)*width)); } |
|
break; |
|
case 18: patternum=11; case 22: |
|
hdirection = -2; vdirection = -1; /* directions to follow corner */ |
|
if ( (jrow=irow+2) < height ) { /* vert corner below center pixel */ |
|
vertcornval = getlongbit(bitmap,(icol+jrow*width)); |
|
if ( (icol+1) < width ) /* lower diag right of center */ |
|
botdiagval = getlongbit(bitmap,((icol+1)+jrow*width)); } |
|
if ( (jcol=icol-2) >= 0 ) { /* horz corner left of center */ |
|
horzcornval = getlongbit(bitmap,(jcol+irow*width)); |
|
if ( (irow-1) >= 0 ) /* upper diag above center */ |
|
topdiagval = getlongbit(bitmap,(jcol+(irow-1)*width)); } |
|
break; |
|
case 72: patternum=11; case 104: |
|
hdirection = 2; vdirection = 1; /* directions to follow corner */ |
|
if ( (jrow=irow-2) >= 0 ) { /* vert corner above center pixel */ |
|
vertcornval = getlongbit(bitmap,(icol+jrow*width)); |
|
if ( (icol-1) >= 0 ) /* upper diag left of center */ |
|
topdiagval = getlongbit(bitmap,((icol-1)+jrow*width)); } |
|
if ( (jcol=icol+2) < width ) { /* horz corner right of center */ |
|
horzcornval = getlongbit(bitmap,(jcol+irow*width)); |
|
if ( (irow+1) < height ) /* lower diag below center */ |
|
botdiagval = getlongbit(bitmap,(jcol+(irow+1)*width)); } |
|
break; |
|
case 80: patternum=11; case 208: |
|
hdirection = -2; vdirection = 1; /* directions to follow corner */ |
|
if ( (jrow=irow-2) >= 0 ) { /* vert corner above center pixel */ |
|
vertcornval = getlongbit(bitmap,(icol+jrow*width)); |
|
if ( (icol+1) < width ) /* upper diag right of center */ |
|
topdiagval = getlongbit(bitmap,((icol+1)+jrow*width)); } |
|
if ( (jcol=icol-2) >= 0 ) { /* horz corner left of center */ |
|
horzcornval = getlongbit(bitmap,(jcol+irow*width)); |
|
if ( (irow+1) < height ) /* lower diag below center */ |
|
botdiagval = getlongbit(bitmap,(jcol+(irow+1)*width)); } |
|
break; |
|
} /* --- end-of-switch(gridnum/2) --- */ |
|
cornval = vertcornval+horzcornval; /* 0=no corner bits, 1, 2=both */ |
|
diagval = topdiagval+botdiagval; /* 0=no diag bits, 1, 2=both */ |
|
/* ------------------------------------------------------------------------- |
|
Handle white center |
|
-------------------------------------------------------------------------- */ |
|
if ( 1 && !iscenter ) { aaval = (patternum==11?51:64); goto end_of_job; } |
|
/* ------------------------------------------------------------------------- |
|
Handle black center |
|
-------------------------------------------------------------------------- */ |
|
if ( diagval > 1 ) aaval = ( patternum==24? 255:191 ); |
|
else { |
|
hturn = aafollowline(rp,irow,icol,hdirection); |
|
vturn = aafollowline(rp,irow,icol,vdirection); |
|
if ( vturn*hdirection < 0 && hturn*vdirection < 0 ) |
|
aaval = ( patternum==24? 255:191 ); |
|
else aaval = grayscale-1; } /* actual corner */ |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with grayscale antialiased value for pixel at irow,icol |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
if ( aaval >= 0 ) /* have antialiasing result */ |
|
if ( msglevel>=99 && msgfp!=NULL ) fprintf(msgfp, /* diagnostic output */ |
|
"aapattern1124> irow,icol,grid#/2=%d,%d,%d, top,botdiag=%d,%d, " |
|
"vert,horzcorn=%d,%d, v,hdir=%d,%d, v,hturn=%d,%d, aaval=%d\n", |
|
irow,icol,gridnum/2, topdiagval,botdiagval, vertcornval,horzcornval, |
|
vdirection,hdirection, vturn,hturn, aaval); |
|
return ( aaval ); /* back with antialiased value */ |
|
} /* --- end-of-function aapattern1124() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aapattern19 ( rp, irow, icol, gridnum, grayscale ) |
|
* Purpose: calculates anti-aliased value for pixel at irow,icol, |
|
* whose surrounding 3x3 pixel grid is coded by gridnum |
|
* (which must correspond to pattern #19). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster whose bitmap |
|
* is to be anti-aliased |
|
* irow (I) int containing row, 0...height-1, |
|
* of pixel to be antialiased |
|
* icol (I) int containing col, 0...width-1, |
|
* of pixel to be antialiased |
|
* gridnum (I) int containing 0...511 corresponding to |
|
* 3x3 pixel grid surrounding irow,icol |
|
* grayscale (I) int containing number of grayscales |
|
* to be calculated, 0...grayscale-1 |
|
* (should typically be given as 256) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 0...grayscale-1 for success, -1=any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Handles the four gridnum's |
|
* (gridnum/2 shown to eliminate irrelevant low-order bit) |
|
* --- --* *-- *** |
|
* --- = 7 --* = 41 *-- = 148 --- = 224 |
|
* *** --* *-- --- |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aapattern19 (raster *rp, int irow, int icol, |
|
int gridnum, int grayscale) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int aaval = (-1); /* antialiased value returned */ |
|
int iscenter = gridnum&1; /* true if pixel at irow,icol black*/ |
|
int orientation = 1, /* 1=vertical, 2=horizontal */ |
|
jrow=irow, jcol=icol; /* middle pixel of *** line */ |
|
int turn1=0,turn2=0, aafollowline(); /* follow *** line till it turns */ |
|
/* ------------------------------------------------------------------------- |
|
Initialization and calculation of antialiased value |
|
-------------------------------------------------------------------------- */ |
|
/* --- check input -- */ |
|
if ( iscenter ) goto end_of_job; /* we only antialias white pixels */ |
|
/* --- set params --- */ |
|
switch ( gridnum/2 ) { /* check pattern#19 orientation */ |
|
default: goto end_of_job; /* not a pattern#19 gridnum */ |
|
case 7: orientation=2; jrow++; break; |
|
case 41: orientation=1; jcol++; break; |
|
case 148: orientation=1; jcol--; break; |
|
case 224: orientation=2; jrow--; break; |
|
} /* --- end-of-switch(gridnum/2) --- */ |
|
/* --- get turns in both directions --- */ |
|
if ( (turn1 = aafollowline(rp,jrow,jcol,orientation)) == 0 ) goto end_of_job; |
|
if ( (turn2 = aafollowline(rp,jrow,jcol,-orientation)) == 0) goto end_of_job; |
|
if ( turn1*turn2 >= 0 ) goto end_of_job; /* both turns in same direction */ |
|
/* --- weight pixel --- */ |
|
aaval = grayscale / ( 3 + min2(abs(turn1),abs(turn2)) ); |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with grayscale antialiased value for pixel at irow,icol |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
if ( aaval >= 0 ) /* have antialiasing result */ |
|
if ( msglevel>=99 && msgfp!=NULL ) fprintf(msgfp, /* diagnostic output */ |
|
"aapattern19> irow,icol,grid#/2=%d,%d,%d, turn+%d,%d=%d,%d, aaval=%d\n", |
|
irow,icol,gridnum/2, orientation,-orientation,turn1,turn2, aaval); |
|
return ( aaval ); /* back with antialiased value */ |
|
} /* --- end-of-function aapattern19() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aapattern20 ( rp, irow, icol, gridnum, grayscale ) |
|
* Purpose: calculates anti-aliased value for pixel at irow,icol, |
|
* whose surrounding 3x3 pixel grid is coded by gridnum |
|
* (which must correspond to pattern #20). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster whose bitmap |
|
* is to be anti-aliased |
|
* irow (I) int containing row, 0...height-1, |
|
* of pixel to be antialiased |
|
* icol (I) int containing col, 0...width-1, |
|
* of pixel to be antialiased |
|
* gridnum (I) int containing 0...511 corresponding to |
|
* 3x3 pixel grid surrounding irow,icol |
|
* grayscale (I) int containing number of grayscales |
|
* to be calculated, 0...grayscale-1 |
|
* (should typically be given as 256) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 0...grayscale-1 for success, -1=any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Handles the eight gridnum's |
|
* (gridnum/2 shown to eliminate irrelevant low-order bit) |
|
* --- --- --* -*- |
|
* --* = 14 *-- = 19 --* = 42 --* = 73 |
|
* **- -** -*- --* |
|
* |
|
* -*- -** *-- **- |
|
* *-- = 84 *-- = 112 *-- = 146 --* = 200 |
|
* *-- --- -*- --- |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aapattern20 (raster *rp, int irow, int icol, |
|
int gridnum, int grayscale) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int aaval = (-1); /* antialiased value returned */ |
|
int iscenter = gridnum&1; /* true if pixel at irow,icol black*/ |
|
int direction = 1, /* direction to follow ** line */ |
|
jrow1=irow, jcol1=icol, /* coords of * */ |
|
jrow2=irow, jcol2=icol; /* coords of adjacent ** pixel */ |
|
int turn1=0,turn2=0, aafollowline(); /* follow *,** lines till turns */ |
|
/* ------------------------------------------------------------------------- |
|
Initialization and calculation of antialiased value |
|
-------------------------------------------------------------------------- */ |
|
/* --- check input -- */ |
|
if ( 1 ) goto end_of_job; /* don't want this one */ |
|
if ( iscenter ) goto end_of_job; /* we only antialias white pixels */ |
|
/* --- set params --- */ |
|
switch ( gridnum/2 ) { /* check pattern#20 orientation */ |
|
default: goto end_of_job; /* not a pattern#20 gridnum */ |
|
case 14: direction=-2; jcol1++; jrow2++; break; |
|
case 19: direction=2; jcol1--; jrow2++; break; |
|
case 42: direction=1; jrow1++; jcol2++; break; |
|
case 73: direction=-1; jrow1--; jcol2++; break; |
|
case 84: direction=-1; jrow1--; jcol2--; break; |
|
case 112: direction=2; jcol1--; jrow2--; break; |
|
case 146: direction=1; jrow1++; jcol2--; break; |
|
case 200: direction=-2; jcol1++; jrow2--; break; |
|
} /* --- end-of-switch(gridnum/2) --- */ |
|
/* --- get turns in both directions --- */ |
|
if ( (turn1=aafollowline(rp,jrow1,jcol1,-direction)) == 0 ) goto end_of_job; |
|
if ( (turn2=aafollowline(rp,jrow2,jcol2,direction)) == 0 ) goto end_of_job; |
|
if ( turn1*turn2 >= 0 ) goto end_of_job; /* both turns in same direction */ |
|
/* --- weight pixel --- */ |
|
aaval = grayscale / ( 3 + min2(abs(turn1),abs(turn2)) ); |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with grayscale antialiased value for pixel at irow,icol |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
if ( aaval >= 0 ) /* have antialiasing result */ |
|
if ( msglevel>=99 && msgfp!=NULL ) fprintf(msgfp, /* diagnostic output */ |
|
"aapattern20> irow,icol,grid#/2=%d,%d,%d, turn%d,%d=%d,%d, aaval=%d\n", |
|
irow,icol,gridnum/2, -direction,direction,turn1,turn2, aaval); |
|
return ( aaval ); /* back with antialiased value */ |
|
} /* --- end-of-function aapattern20() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aapattern39 ( rp, irow, icol, gridnum, grayscale ) |
|
* Purpose: calculates anti-aliased value for pixel at irow,icol, |
|
* whose surrounding 3x3 pixel grid is coded by gridnum |
|
* (which must correspond to pattern #39). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster whose bitmap |
|
* is to be anti-aliased |
|
* irow (I) int containing row, 0...height-1, |
|
* of pixel to be antialiased |
|
* icol (I) int containing col, 0...width-1, |
|
* of pixel to be antialiased |
|
* gridnum (I) int containing 0...511 corresponding to |
|
* 3x3 pixel grid surrounding irow,icol |
|
* grayscale (I) int containing number of grayscales |
|
* to be calculated, 0...grayscale-1 |
|
* (should typically be given as 256) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 0...grayscale-1 for success, -1=any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Handles the eight gridnum's |
|
* (gridnum/2 shown to eliminate irrelevant low-order bit) |
|
* --- --- --* -** |
|
* --* = 15 *-- = 23 --* = 43 --* = 105 |
|
* *** *** -** --* |
|
* |
|
* **- *** *-- *** |
|
* *-- = 212 *-- = 240 *-- = 150 --* = 232 |
|
* *-- --- **- --- |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aapattern39 (raster *rp, int irow, int icol, |
|
int gridnum, int grayscale) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int aaval = (-1); /* antialiased value returned */ |
|
int iscenter = gridnum&1; /* true if pixel at irow,icol black*/ |
|
int direction = 1, /* direction to follow ** line */ |
|
jrow1=irow, jcol1=icol, /* coords of * */ |
|
jrow2=irow, jcol2=icol; /* coords of adjacent ** pixel */ |
|
int turn1=0,turn2=0, aafollowline(); /* follow *,** lines till turns */ |
|
/* ------------------------------------------------------------------------- |
|
Initialization and calculation of antialiased value |
|
-------------------------------------------------------------------------- */ |
|
/* --- check input -- */ |
|
if ( iscenter ) goto end_of_job; /* we only antialias white pixels */ |
|
/* --- set params --- */ |
|
switch ( gridnum/2 ) { /* check pattern#39 orientation */ |
|
default: goto end_of_job; /* not a pattern#39 gridnum */ |
|
case 15: direction=-2; jcol1++; jrow2++; break; |
|
case 23: direction=2; jcol1--; jrow2++; break; |
|
case 43: direction=1; jrow1++; jcol2++; break; |
|
case 105: direction=-1; jrow1--; jcol2++; break; |
|
case 212: direction=-1; jrow1--; jcol2--; break; |
|
case 240: direction=2; jcol1--; jrow2--; break; |
|
case 150: direction=1; jrow1++; jcol2--; break; |
|
case 232: direction=-2; jcol1++; jrow2--; break; |
|
} /* --- end-of-switch(gridnum/2) --- */ |
|
/* --- get turns directions (tunr1==1 signals inside corner) --- */ |
|
if ( (turn1=aafollowline(rp,jrow1,jcol1,-direction)) == 1 ) |
|
{ aaval=0; goto end_of_job; } |
|
if ( 1 ) goto end_of_job; /* stop here for now */ |
|
if ( (turn2=aafollowline(rp,jrow2,jcol2,direction)) == 0 ) goto end_of_job; |
|
if ( turn1*turn2 >= 0 ) goto end_of_job; /* both turns in same direction */ |
|
/* --- weight pixel --- */ |
|
aaval = grayscale / ( 3 + min2(abs(turn1),abs(turn2)) ); |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with grayscale antialiased value for pixel at irow,icol |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
if ( aaval >= 0 ) /* have antialiasing result */ |
|
if ( msglevel>=99 && msgfp!=NULL ) fprintf(msgfp, /* diagnostic output */ |
|
"aapattern39> irow,icol,grid#/2=%d,%d,%d, turn%d,%d=%d,%d, aaval=%d\n", |
|
irow,icol,gridnum/2, -direction,direction,turn1,turn2, aaval); |
|
return ( aaval ); /* back with antialiased value */ |
|
} /* --- end-of-function aapattern39() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aafollowline ( rp, irow, icol, direction ) |
|
* Purpose: starting with pixel at irow,icol, moves in |
|
* specified direction looking for a "turn" |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster containing pixel image |
|
* irow (I) int containing row, 0...height-1, |
|
* of first pixel |
|
* icol (I) int containing col, 0...width-1, |
|
* of first pixel |
|
* direction (I) int containing +1 to follow line up/north |
|
* (decreasing irow), -1 to follow line |
|
* down/south (increasing irow), +2 to follow |
|
* line right/east (increasing icol), |
|
* -2 to follow line left/west (decreasing icol) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) #rows or #cols traversed prior to turn, |
|
* or 0 if no turn detected (or for any error). |
|
* Sign is + if turn direction is right/east or |
|
* up/north, or is - if left/west or down/south. |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Here are some examples illustrating turn detection in |
|
* +2 (right/east) direction. Turns in other directions |
|
* are detected similarly/symmetrically. * denotes black |
|
* bits (usually fg), - denotes white bits (usually bg), |
|
* and ? denotes "don't care" bit (won't affect outcome). |
|
* Arrow --> points to start pixel denoted by irow,icol. |
|
* |
|
* *??? -??? turn=0 (no turn) is returned |
|
* -->*??? or -->-??? because the start pixel isn't |
|
* *??? -??? on an edge to begin with |
|
* |
|
* ---- **-- turn=0 returned because the |
|
* -->***- or -->***- line ends abruptly without |
|
* ---- ---- turning (even the second case) |
|
* |
|
* ---* ---* turn=0 returned because the |
|
* -->***- or -->**** line forms a Y or T rather |
|
* ---* ---* than turning |
|
* |
|
* ***- **** turn=+3 returned |
|
* -->***- or -->***- (outside corner) |
|
* ---- ---- |
|
* |
|
* ***** ****- turn=-4 returned |
|
* -->***** or -->****- (inside corner) |
|
* ----* ----* |
|
* |
|
* ----* ----* turn=+4 returned |
|
* -->****- or -->***** (outside or inside corner) |
|
* ----- ----- |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aafollowline (raster *rp, int irow, int icol, int direction) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
pixbyte *bitmap = rp->pixmap; /* local rp->pixmap ptr */ |
|
int width=rp->width, height=rp->height; /* width, height of raster */ |
|
int drow=0, dcol=0, /* delta row,col to follow line */ |
|
jrow=irow, jcol=icol; /* current row,col following line */ |
|
int bitval=1, /* value of rp bit at irow,icol */ |
|
fgval=1, bgval=0, /* "fg" is whatever bitval is */ |
|
bitminus=0, bitplus=0; /* value of left/down, right/up bit*/ |
|
int isline=1, isedge=0; /*isline signals one-pixel wide line*/ |
|
int turn = 0, /* detected turn back to caller */ |
|
maxturn = maxfollow; /* don't follow more than max pixels*/ |
|
/* ------------------------------------------------------------------------- |
|
Initialization |
|
-------------------------------------------------------------------------- */ |
|
/* --- check input --- */ |
|
if ( irow<0 || irow>=height /* irow out-of-bounds */ |
|
|| icol<0 || icol>=width ) goto end_of_job; /* icol out-of-bounds */ |
|
/* --- starting bit -- see if we're following a fg (usual), or bg line --- */ |
|
bitval = getlongbit(bitmap,(icol+irow*width)); /* starting pixel (bg or fg)*/ |
|
fgval = bitval; bgval = (1-bitval); /* define "fg" as whatever bitval is*/ |
|
/* --- set drow,dcol corresponding to desired direction --- */ |
|
switch ( direction ) { /* determine drow,dcol for direction*/ |
|
default: goto end_of_job; /* unrecognized direction arg */ |
|
case 1: drow = (-1); break; /* follow line up/north */ |
|
case -1: drow = 1; break; /* down/south */ |
|
case 2: dcol = 1; break; /* right/east */ |
|
case -2: dcol = (-1); break; } /* left/west */ |
|
/* --- set bitminus and bitplus --- */ |
|
if ( drow == 0 ) { /* we're following line right/left */ |
|
if ( irow < height ) /* there's a pixel below current */ |
|
bitminus = getlongbit(bitmap,(icol+(irow+1)*width)); /* get it */ |
|
if ( irow > 0 ) /* there's a pixel above current */ |
|
bitplus = getlongbit(bitmap,(icol+(irow-1)*width)); } /* get it */ |
|
if ( dcol == 0 ) { /* we're following line up/down */ |
|
if ( icol < width ) /* there's a pixel to the right */ |
|
bitplus = getlongbit(bitmap,(icol+1+irow*width)); /* get it */ |
|
if ( icol > 0 ) /* there's a pixel to the left */ |
|
bitminus = getlongbit(bitmap,(icol-1+irow*width)); } /* get it */ |
|
/* --- check for lack of line to follow --- */ |
|
if ( bitval == bitplus /* starting pixel same as above */ |
|
&& bitval == bitminus ) /* and below (or right and left) */ |
|
goto end_of_job; /* so there's no line to follow */ |
|
/* --- set isline and isedge (already initted for isline) --- */ |
|
if ( bitval == bitplus ) /* starting pixel same as above */ |
|
{ isedge = (-1); isline = 0; } /* so we're at an edge below */ |
|
if ( bitval == bitminus ) /* starting pixel same as below */ |
|
{ isedge = 1; isline = 0; } /* so we're at an edge above */ |
|
/* ------------------------------------------------------------------------- |
|
follow line |
|
-------------------------------------------------------------------------- */ |
|
while ( 1 ) { /* until turn found (or max) */ |
|
/* --- local allocations and declarations --- */ |
|
int dbitval=0, /* value of bit at jrow,jcol */ |
|
dbitminus=0, dbitplus=0; /* value of left/down, right/up bit*/ |
|
/* --- bump pixel count and indexes; check for max or end-of-raster --- */ |
|
turn++; /* bump #pixels followed */ |
|
jrow += drow; jcol += dcol; /* indexes of next pixel to check */ |
|
if ( turn > maxturn /* already followed max #pixels */ |
|
|| jrow<0 || jrow>=height /* or jrow past end-of-raster */ |
|
|| jcol<0 || jcol>=width ) /* or jcol past end-of-raster */ |
|
{ turn = 0; goto end_of_job; } /* so quit without finding a turn */ |
|
/* --- set current bit (dbitval) --- */ |
|
dbitval = getlongbit(bitmap,(jcol+jrow*width)); /*value of jrow,jcol bit*/ |
|
/* --- set dbitminus and dbitplus --- */ |
|
if ( drow == 0 ) { /* we're following line right/left */ |
|
if ( irow < height ) /* there's a pixel below current */ |
|
dbitminus = getlongbit(bitmap,(jcol+(irow+1)*width)); /* get it */ |
|
if ( irow > 0 ) /* there's a pixel above current */ |
|
dbitplus = getlongbit(bitmap,(jcol+(irow-1)*width)); } /* get it */ |
|
if ( dcol == 0 ) { /* we're following line up/down */ |
|
if ( icol < width ) /* there's a pixel to the right */ |
|
dbitplus = getlongbit(bitmap,(icol+1+jrow*width)); /* get it */ |
|
if ( icol > 0 ) /* there's a pixel to the left */ |
|
dbitminus = getlongbit(bitmap,(icol-1+jrow*width)); } /* get it */ |
|
/* --- first check for abrupt end-of-line, or for T or Y --- */ |
|
if ( isline != 0 ) /* abrupt end or T,Y must be a line*/ |
|
if ( ( bgval == dbitval /* end-of-line if pixel flips to bg*/ |
|
&& bgval == dbitplus /* and bg same as above pixel */ |
|
&& bgval == dbitminus ) /* and below (or right and left) */ |
|
|| ( fgval == dbitplus /* T or Y if fg same as above pixel*/ |
|
&& fgval == dbitminus ) ) /* and below (or right and left) */ |
|
{ turn = 0; goto end_of_job; } /* so we're at a T or Y */ |
|
/* --- check for turning line --- */ |
|
if ( isline != 0 ) { /* turning line must be a line */ |
|
if ( fgval == dbitminus ) /* turning down */ |
|
{ turn = -turn; goto end_of_job; } /* so return negative turn */ |
|
else if ( fgval == dbitplus ) /* turning up */ |
|
goto end_of_job; } /* so return positive turn */ |
|
/* --- check for inside corner at edge --- */ |
|
if ( isedge != 0 ) { /* inside corner must be a edge */ |
|
if ( isedge < 0 && fgval == bitminus ) /* corner below */ |
|
{ turn = -turn; goto end_of_job; } /* so return negative turn */ |
|
if ( isedge > 0 && fgval == bitplus ) /* corner above */ |
|
goto end_of_job; } /* so return positive turn */ |
|
/* --- check for abrupt end at edge --- */ |
|
if ( isedge != 0 /* abrupt edge end must be an edge */ |
|
&& fgval == dbitval ) /* and line must not end */ |
|
if ( (isedge < 0 && bgval == bitplus) /* abrupt end above */ |
|
|| (isedge > 0 && bgval == bitminus) ) /* or abrupt end below */ |
|
{ turn = 0; goto end_of_job; } /* so edge ended abruptly */ |
|
/* --- check for outside corner at edge --- */ |
|
if ( isedge != 0 /* outside corner must be a edge */ |
|
&& bgval == dbitval ) { /* and line must end */ |
|
if ( isedge > 0 ) turn = -turn; /* outside turn down from edge above*/ |
|
goto end_of_job; } |
|
} /* --- end-of-while(1) --- */ |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with #rows or #cols traversed, and direction of detected turn |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
if ( msglevel>=99 && msgfp!=NULL ) /* debugging/diagnostic output */ |
|
fprintf(msgfp,"aafollowline> irow,icol,direction=%d,%d,%d, turn=%d\n", |
|
irow,icol,direction,turn); |
|
return ( turn ); |
|
} /* --- end-of-function aafollowline() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aagridnum ( rp, irow, icol ) |
|
* Purpose: calculates gridnum, 0-511 (see Notes below), |
|
* for 3x3 grid centered at irow,icol |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster containing |
|
* bitmap image (to be anti-aliased) |
|
* irow (I) int containing row, 0...height-1, |
|
* at center of 3x3 grid |
|
* icol (I) int containing col, 0...width-1, |
|
* at center of 3x3 grid |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 0-511 grid number, or -1=any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Input gridnum is a 9-bit int, 0-511, coding a 3x3 pixel grid |
|
* whose bit positions (and corresponding values) in gridnum are |
|
* 876 256 128 64 |
|
* 504 = 32 1 16 |
|
* 321 8 4 2 |
|
* Thus, for example (*=pixel set/black, -=pixel not set/white), |
|
* *-- *-- -** (note that 209 is the |
|
* -*- = 259 *-- = 302 -** = 209 inverse, set<-->unset, |
|
* --* *** --- of 302) |
|
* o A set pixel is considered black, an unset pixel considered |
|
* white. |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aagridnum (raster *rp, int irow, int icol) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
pixbyte *bitmap = rp->pixmap; /* local rp->pixmap ptr */ |
|
int width=rp->width, height=rp->height, /* width, height of raster */ |
|
imap = icol + irow*width; /* pixel index = icol + irow*width */ |
|
int bitval=0, /* value of rp bit at irow,icol */ |
|
nnbitval=0, nebitval=0, eebitval=0, sebitval=0, /*adjacent vals*/ |
|
ssbitval=0, swbitval=0, wwbitval=0, nwbitval=0, /*compass pt names*/ |
|
gridnum = (-1); /* grid# 0-511 for above 9 bits */ |
|
/* ------------------------------------------------------------------------- |
|
check input |
|
-------------------------------------------------------------------------- */ |
|
if ( irow<0 || irow>=height /* irow out-of-bounds */ |
|
|| icol<0 || icol>=width ) goto end_of_job; /* icol out-of-bounds */ |
|
/* ------------------------------------------------------------------------- |
|
get the 9 bits comprising the 3x3 grid centered at irow,icol |
|
-------------------------------------------------------------------------- */ |
|
/* --- get center bit --- */ |
|
bitval = getlongbit(bitmap,imap); /* value of rp input bit at imap */ |
|
/* --- get 8 surrounding bits --- */ |
|
if ( irow > 0 ) /* nn (north) bit available */ |
|
nnbitval = getlongbit(bitmap,imap-width); /* nn bit value */ |
|
if ( irow < height-1 ) /* ss (south) bit available */ |
|
ssbitval = getlongbit(bitmap,imap+width); /* ss bit value */ |
|
if ( icol > 0 ) /* ww (west) bit available */ |
|
{ wwbitval = getlongbit(bitmap,imap-1); /* ww bit value */ |
|
if ( irow > 0 ) /* nw bit available */ |
|
nwbitval = getlongbit(bitmap,imap-width-1); /* nw bit value */ |
|
if ( irow < height-1 ) /* sw bit available */ |
|
swbitval = getlongbit(bitmap,imap+width-1); } /* sw bit value */ |
|
if ( icol < width-1 ) /* ee (east) bit available */ |
|
{ eebitval = getlongbit(bitmap,imap+1); /* ee bit value */ |
|
if ( irow > 0 ) /* ne bit available */ |
|
nebitval = getlongbit(bitmap,imap-width+1); /* ne bit value */ |
|
if ( irow < height-1 ) /* se bit available */ |
|
sebitval = getlongbit(bitmap,imap+width+1); } /* se bit value */ |
|
/* --- set gridnum --- */ |
|
gridnum = 0; /* clear all bits */ |
|
if ( bitval ) gridnum = 1; /* set1bit(gridnum,0); */ |
|
if ( nwbitval ) gridnum += 256; /* set1bit(gridnum,8); */ |
|
if ( nnbitval ) gridnum += 128; /* set1bit(gridnum,7); */ |
|
if ( nebitval ) gridnum += 64; /* set1bit(gridnum,6); */ |
|
if ( wwbitval ) gridnum += 32; /* set1bit(gridnum,5); */ |
|
if ( eebitval ) gridnum += 16; /* set1bit(gridnum,4); */ |
|
if ( swbitval ) gridnum += 8; /* set1bit(gridnum,3); */ |
|
if ( ssbitval ) gridnum += 4; /* set1bit(gridnum,2); */ |
|
if ( sebitval ) gridnum += 2; /* set1bit(gridnum,1); */ |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with gridnum coding 3x3 grid centered at irow,icol |
|
-------------------------------------------------------------------------- */ |
|
end_of_job: |
|
return ( gridnum ); |
|
} /* --- end-of-function aagridnum() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aapatternnum ( gridnum ) |
|
* Purpose: Looks up the pattern number 1...51 |
|
* corresponding to the 3x3 pixel grid coded by gridnum 0=no |
|
* pixels set (white) to 511=all pixels set (black). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: gridnum (I) int containing 0-511 coding a 3x3 pixel grid |
|
* (see Notes below) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 1 to 51, or -1=error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Input gridnum is a 9-bit int, 0-511, coding a 3x3 pixel grid |
|
* whose bit positions (and corresponding values) in gridnum are |
|
* 876 256 128 64 |
|
* 504 = 32 1 16 |
|
* 321 8 4 2 |
|
* Thus, for example (*=pixel set/black, -=pixel not set/white), |
|
* *-- *-- -** (note that 209 is the |
|
* -*- = 259 *-- = 302 -** = 209 inverse, set<-->unset, |
|
* --* *** --- of 302) |
|
* o A set pixel is considered black, an unset pixel considered |
|
* white. |
|
* o Ignoring whether the center pixel is set or unset, and |
|
* taking rotation, reflection and inversion (set<-->unset) |
|
* symmetries into account, there are 32 unique pixel patterns. |
|
* If inversions are listed separately, there are 51 patterns. |
|
* o Here are the 51 unique patterns, with ? always denoting the |
|
* undetermined center pixel. At the upper-left corner of each |
|
* pattern is the "pattern index number" assigned to it in this |
|
* function. At the upper-right is the pattern's multiplicity, |
|
* i.e., the number of different patterns obtained by rotations |
|
* and reflection of the illustrated one. Inverse patters are |
|
* illustrated immediately beneath the original (the first three |
|
* four-pixel patterns have identical inverses). |
|
* ------------------------------------------------------------- |
|
* No pixels set: |
|
* #1 1 (in this case, 1 signifies that rotation |
|
* --- and reflection give no different grids) |
|
* -?- |
|
* --- |
|
* Inverse, all eight pixels set |
|
* #2 1 (the inverse multiplicity is always the same) |
|
* *** |
|
* *?* |
|
* *** |
|
* ------------------------------------------------------------- |
|
* One pixel set: |
|
* #3 4 #4 4 |
|
* *-- -*- |
|
* -?- -?- |
|
* --- --- |
|
* Inverse, seven pixels set: |
|
* #5 4 #6 4 |
|
* -** *-* |
|
* *?* *?* |
|
* *** *** |
|
* ------------------------------------------------------------- |
|
* Two pixels set: |
|
* #7 8 #8 4 #9 8 10 2 11 4 12 2 |
|
* **- *-* *-- *-- -*- -*- |
|
* -?- -?- -?* -?- -?* -?- |
|
* --- --- --- --* --- -*- |
|
* Inverse, six pixels set: |
|
* #13 8 14 4 15 8 16 2 17 4 18 2 |
|
* --* -*- -** -** *-* *-* |
|
* *?* *?* *?- *?* *?- *?* |
|
* *** *** *** **- *** *-* |
|
* ------------------------------------------------------------- |
|
* Three pixels set: |
|
* #19 4 20 8 21 8 22 8 23 8 24 4 25 4 26 4 27 4 28 4 |
|
* *** **- **- **- **- **- *-* *-* -*- -*- |
|
* -?- -?* -?- -?- -?- *?- -?- -?- -?* -?* |
|
* --- --- --* -*- *-- --- --* -*- -*- *-- |
|
* Inverse, five pixels set: |
|
* #29 4 30 8 31 8 32 8 33 8 34 4 35 4 36 4 37 4 38 4 |
|
* --- --* --* --* --* --* -*- -*- *-* *-* |
|
* *?* *?- *?* *?* *?* -?* *?* *?* *?- *?- |
|
* *** *** **- *-* -** *** **- *-* *-* -** |
|
* ------------------------------------------------------------- |
|
* Four pixels set (including inverses): |
|
* #39 8 40 4 41 8 42 8 43 4 44 4 45 8 46 1 |
|
* *** **- **- *** *** **- **- *-* |
|
* -?* -?- -?* -?- -?- -?* -?* -?- |
|
* --- -** *-- --* -*- --* -*- *-* |
|
* |
|
* #47 8 48 4 49 4 50 8 51 1 |
|
* --- --- --* --* -*- |
|
* *?* *?* *?- *?- *?* |
|
* **- *-* **- *-* -*- |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aapatternnum ( int gridnum ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int pattern = (-1); /*pattern#, 1-51, for input gridnum*/ |
|
/* --- |
|
* pattern number corresponding to input gridnum/2 code |
|
* ( gridnum/2 strips off gridnum's low bit because it's |
|
* the same pattern whether or not center pixel is set ) |
|
* --- */ |
|
static int patternnum[] = { |
|
1, 3, 4, 7, 3, 8, 7,19, 4, 7,11,24, 9,23,20,39, /* 0- 15 */ |
|
4, 9,11,20, 7,23,24,39,12,22,27,47,22,48,47,29, /* 16- 31 */ |
|
3, 8, 9,23,10,25,21,42, 7,19,20,39,21,42,44,34, /* 32- 47 */ |
|
9,26,28,41,21,50,49,30,22,43,45,33,40,32,31,13, /* 48- 63 */ |
|
4, 9,12,22, 9,26,22,43,11,20,27,47,28,41,45,33, /* 64- 79 */ |
|
11,28,27,45,20,41,47,33,27,45,51,35,45,36,35,14, /* 80- 95 */ |
|
7,23,22,48,21,50,40,32,24,39,47,29,49,30,31,13, /* 96-111 */ |
|
20,41,45,36,44,38,31,15,47,33,35,14,31,15,16, 5, /* 112-127 */ |
|
3,10, 9,21, 8,25,23,42, 9,21,28,49,26,50,41,30, /* 128-143 */ |
|
7,21,20,44,19,42,39,34,22,40,45,31,43,32,33,13, /* 144-159 */ |
|
8,25,26,50,25,46,50,37,23,42,41,30,50,37,38,17, /* 160-175 */ |
|
23,50,41,38,42,37,30,17,48,32,36,15,32,18,15, 6, /* 176-191 */ |
|
7,21,22,40,23,50,48,32,20,44,45,31,41,38,36,15, /* 192-207 */ |
|
24,49,47,31,39,30,29,13,47,31,35,16,33,15,14, 5, /* 208-223 */ |
|
19,42,43,32,42,37,32,18,39,34,33,13,30,17,15, 6, /* 224-239 */ |
|
39,30,33,15,34,17,13, 6,29,13,14, 5,13, 6, 5, 2, /* 240-255 */ |
|
-1 } ; /* --- end-of-patternnum[] --- */ |
|
/* ------------------------------------------------------------------------- |
|
look up pattern number for gridnum |
|
-------------------------------------------------------------------------- */ |
|
/* --- first check input --- */ |
|
if ( gridnum<0 || gridnum>511 ) goto end_of_job; /* gridnum out of bounds */ |
|
/* --- look up pattern number, 1-51, corresponding to input gridnum --- */ |
|
pattern = patternnum[gridnum/2]; /* /2 strips off gridnum's low bit */ |
|
if ( pattern<1 || pattern>51 ) pattern = (-1); /* some internal error */ |
|
end_of_job: |
|
return ( pattern ); /* back to caller with pattern# */ |
|
} /* --- end-of-function aapatternnum() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aalookup ( gridnum ) |
|
* Purpose: Looks up the grayscale value 0=white to 255=black |
|
* corresponding to the 3x3 pixel grid coded by gridnum 0=no |
|
* pixels set (white) to 511=all pixels set (black). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: gridnum (I) int containing 0-511 coding a 3x3 pixel grid |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 0=white to 255=black, or -1=error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o Input gridnum is a 9-bit int, 0-511, coding a 3x3 pixel grid |
|
* o A set pixel is considered black, an unset pixel considered |
|
* white. Likewise, the returned grayscale is 255 for black, |
|
* 0 for white. You'd more typically want to use 255-grayscale |
|
* so that 255 is white and 0 is black. |
|
* o The returned number is the (lowpass) antialiased grayscale |
|
* for the center pixel (gridnum bit 0) of the grid. |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aalookup ( int gridnum ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int grayscale = (-1); /*returned grayscale, init for error*/ |
|
int pattern = (-1), aapatternnum(); /*pattern#, 1-51, for input gridnum*/ |
|
int iscenter = gridnum&1; /*low-order bit set for center pixel*/ |
|
/* --- gray scales --- */ |
|
#define WHT 0 |
|
#define LGT 64 |
|
#define GRY 128 |
|
#define DRK 192 |
|
#define BLK 255 |
|
#if 1 |
|
/* --- |
|
* modified aapnm() grayscales (second try) |
|
* --- */ |
|
/* --- grayscale for each pattern when center pixel set/black --- */ |
|
static int grayscale1[] = { -1, /* [0] index not used */ |
|
BLK,BLK,BLK,BLK,242,230,BLK,BLK,BLK,160, /* 1-10 */ |
|
/* BLK,BLK,BLK,BLK,242,230,BLK,BLK,BLK,BLK, */ /* 1-10 */ |
|
BLK,BLK,217,230,217,230,204,BLK,BLK,166, /* 11-20 */ |
|
BLK,BLK,BLK,BLK,BLK,BLK,178,166,204,191, /* 21-30 */ |
|
204,BLK,204,191,217,204,BLK,191,178,BLK, /* 31-40 */ |
|
178,BLK,BLK,178,191,BLK,191,BLK,178,BLK,204, /* 41-51 */ |
|
-1 } ; /* --- end-of-grayscale1[] --- */ |
|
/* --- grayscale for each pattern when center pixel not set/white --- */ |
|
static int grayscale0[] = { -1, /* [0] index not used */ |
|
WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT, /* 1-10 */ |
|
64,WHT,WHT,128,115,128,WHT,WHT,WHT, 64, /* 11-20 */ |
|
/* 51,WHT,WHT,128,115,128,WHT,WHT,WHT, 64, */ /* 11-20 */ |
|
WHT,WHT,WHT, 64,WHT,WHT, 76, 64,102, 89, /* 21-30 */ |
|
102,WHT,102,WHT,115,102,WHT, 89, 76,WHT, /* 31-40 */ |
|
76,WHT,WHT, 76, 89,WHT, 89,WHT, 76,WHT,102, /* 41-51 */ |
|
-1 } ; /* --- end-of-grayscale0[] --- */ |
|
#endif |
|
#if 0 |
|
/* --- |
|
* modified aapnm() grayscales (first try) |
|
* --- */ |
|
/* --- grayscale for each pattern when center pixel set/black --- */ |
|
static int grayscale1[] = { -1, /* [0] index not used */ |
|
BLK,BLK,BLK,BLK,242,230,GRY,BLK,BLK,BLK, /* 1-10 */ |
|
/* BLK,BLK,BLK,BLK,242,230,BLK,BLK,BLK,BLK, */ /* 1-10 */ |
|
BLK,BLK,217,230,217,230,204,BLK,BLK,166, /* 11-20 */ |
|
BLK,BLK,BLK,BLK,BLK,BLK,BLK,166,204,191, /* 21-30 */ |
|
/* BLK,BLK,BLK,BLK,BLK,BLK,178,166,204,191, */ /* 21-30 */ |
|
204,BLK,204,BLK,217,204,BLK,191,GRY,BLK, /* 31-40 */ |
|
/* 204,BLK,204,191,217,204,BLK,191,178,BLK, */ /* 31-40 */ |
|
178,BLK,BLK,178,191,BLK,BLK,BLK,178,BLK,204, /* 41-51 */ |
|
/* 178,BLK,BLK,178,191,BLK,191,BLK,178,BLK,204, */ /* 41-51 */ |
|
-1 } ; /* --- end-of-grayscale1[] --- */ |
|
/* --- grayscale for each pattern when center pixel not set/white --- */ |
|
static int grayscale0[] = { -1, /* [0] index not used */ |
|
WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT, /* 1-10 */ |
|
GRY,WHT,WHT,128,115,128,WHT,WHT,WHT,GRY, /* 11-20 */ |
|
/* 51,WHT,WHT,128,115,128,WHT,WHT,WHT, 64, */ /* 11-20 */ |
|
WHT,WHT,WHT,GRY,WHT,WHT, 76, 64,102, 89, /* 21-30 */ |
|
/* WHT,WHT,WHT, 64,WHT,WHT, 76, 64,102, 89, */ /* 21-30 */ |
|
102,WHT,102,WHT,115,102,WHT, 89,GRY,WHT, /* 31-40 */ |
|
/* 102,WHT,102,WHT,115,102,WHT, 89, 76,WHT, */ /* 31-40 */ |
|
76,WHT,WHT,GRY, 89,WHT, 89,WHT, 76,WHT,102, /* 41-51 */ |
|
/* 76,WHT,WHT, 76, 89,WHT, 89,WHT, 76,WHT,102, */ /* 41-51 */ |
|
-1 } ; /* --- end-of-grayscale0[] --- */ |
|
#endif |
|
#if 0 |
|
/* --- |
|
* these grayscales _exactly_ correspond to the aapnm() algorithm |
|
* --- */ |
|
/* --- grayscale for each pattern when center pixel set/black --- */ |
|
static int grayscale1[] = { -1, /* [0] index not used */ |
|
BLK,BLK,BLK,BLK,242,230,BLK,BLK,BLK,BLK, /* 1-10 */ |
|
BLK,BLK,217,230,217,230,204,BLK,BLK,166, /* 11-20 */ |
|
BLK,BLK,BLK,BLK,BLK,BLK,178,166,204,191, /* 21-30 */ |
|
204,BLK,204,191,217,204,BLK,191,178,BLK, /* 31-40 */ |
|
178,BLK,BLK,178,191,BLK,191,BLK,178,BLK,204, /* 41-51 */ |
|
-1 } ; /* --- end-of-grayscale1[] --- */ |
|
/* --- grayscale for each pattern when center pixel not set/white --- */ |
|
static int grayscale0[] = { -1, /* [0] index not used */ |
|
WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT,WHT, /* 1-10 */ |
|
51,WHT,WHT,128,115,128,WHT,WHT,WHT, 64, /* 11-20 */ |
|
WHT,WHT,WHT, 64,WHT,WHT, 76, 64,102, 89, /* 21-30 */ |
|
102,WHT,102,WHT,115,102,WHT, 89, 76,WHT, /* 31-40 */ |
|
76,WHT,WHT, 76, 89,WHT, 89,WHT, 76,WHT,102, /* 41-51 */ |
|
-1 } ; /* --- end-of-grayscale0[] --- */ |
|
#endif |
|
/* ------------------------------------------------------------------------- |
|
look up grayscale for gridnum |
|
-------------------------------------------------------------------------- */ |
|
/* --- first check input --- */ |
|
if ( gridnum<0 || gridnum>511 ) goto end_of_job; /* gridnum out of bounds */ |
|
/* --- look up pattern number, 1-51, corresponding to input gridnum --- */ |
|
pattern = aapatternnum(gridnum); /* look up pattern number */ |
|
if ( pattern<1 || pattern>51 ) goto end_of_job; /* some internal error */ |
|
if ( ispatternnumcount ) { /* counts being accumulated */ |
|
if (iscenter) patternnumcount1[pattern] += 1; /* bump diagnostic count */ |
|
else patternnumcount0[pattern] += 1; } |
|
/* --- look up grayscale for this pattern --- */ |
|
grayscale = ( iscenter? grayscale1[pattern] : grayscale0[pattern] ); |
|
end_of_job: |
|
return ( grayscale ); /* back to caller with grayscale */ |
|
} /* --- end-of-function aalookup() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: aalowpasslookup ( rp, bytemap, grayscale ) |
|
* Purpose: calls aalookup() for each pixel in rp->bitmap |
|
* to create anti-aliased bytemap |
|
* -------------------------------------------------------------------------- |
|
* Arguments: rp (I) raster * to raster whose bitmap |
|
* is to be anti-aliased |
|
* bytemap (O) intbyte * to bytemap, calculated |
|
* by calling aalookup() for each pixel |
|
* in rp->bitmap |
|
* grayscale (I) int containing number of grayscales |
|
* to be calculated, 0...grayscale-1 |
|
* (should typically be given as 256) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) 1=success, 0=any error |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int aalowpasslookup (raster *rp, intbyte *bytemap, int grayscale) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int width=rp->width, height=rp->height, /* width, height of raster */ |
|
icol = 0, irow = 0, imap = (-1); /* width, height, bitmap indexes */ |
|
int bgbitval=0 /*, fgbitval=1*/; /* background, foreground bitval */ |
|
int bitval=0, /* value of rp bit at irow,icol */ |
|
aabyteval=0; /* antialiased (or unchanged) value*/ |
|
int gridnum=0, aagridnum(), /* grid# for 3x3 grid at irow,icol */ |
|
aalookup(); /* table look up antialiased value*/ |
|
/* ------------------------------------------------------------------------- |
|
generate bytemap by table lookup for each pixel of bitmap |
|
-------------------------------------------------------------------------- */ |
|
for ( irow=0; irow<height; irow++ ) |
|
for ( icol=0; icol<width; icol++ ) |
|
{ |
|
/* --- get gridnum and center bit value, init aabyteval --- */ |
|
gridnum = aagridnum(rp,irow,icol); /*grid# coding 3x3 grid at irow,icol*/ |
|
bitval = (gridnum&1); /* center bit set if gridnum odd */ |
|
aabyteval = (intbyte)(bitval==bgbitval?0:grayscale-1); /* default aa val */ |
|
imap++; /* first bump bitmap[] index */ |
|
bytemap[imap] = (intbyte)(aabyteval); /* init antialiased pixel */ |
|
/* --- look up antialiased value for this grid --- */ |
|
aabyteval = aalookup(gridnum); /* look up on grid# */ |
|
if ( aabyteval>=0 && aabyteval<=255 ) /* check for success */ |
|
bytemap[imap] = (intbyte)(aabyteval); /* init antialiased pixel */ |
|
} /* --- end-of-for(irow,icol) --- */ |
|
ispatternnumcount = 0; /* accumulate counts only once */ |
|
/* ------------------------------------------------------------------------- |
|
Back to caller with gray-scale anti-aliased bytemap |
|
-------------------------------------------------------------------------- */ |
|
/*end_of_job:*/ |
|
return ( 1 ); |
|
} /* --- end-of-function aalowpasslookup() --- */ |
|
|
|
|
|
/* ========================================================================== |
* Function: aasupsamp ( rp, aa, sf, grayscale ) |
* Function: aasupsamp ( rp, aa, sf, grayscale ) |
* Purpose: calculates a supersampled anti-aliased bytemap |
* Purpose: calculates a supersampled anti-aliased bytemap |
* for rp->bitmap, with each byte 0...grayscale-1 |
* for rp->bitmap, with each byte 0...grayscale-1 |
Line 9480 end_of_job:
|
Line 13062 end_of_job:
|
* (usually just #rows * #cols) |
* (usually just #rows * #cols) |
* colors (O) intbyte * (to be interpreted as ints) |
* colors (O) intbyte * (to be interpreted as ints) |
* returning a list of the discrete/different |
* returning a list of the discrete/different |
* values in bytemap, in ascending value order |
* values in bytemap, in ascending value order, |
|
* and with gamma correction applied |
* colormap (O) intbyte * returning a bytemap "image", |
* colormap (O) intbyte * returning a bytemap "image", |
* i.e., in one-to-one pixel correspondence |
* i.e., in one-to-one pixel correspondence |
* with bytemap, but where the values have been |
* with bytemap, but where the values have been |
Line 9501 int ncolors = 0, /* #different values
|
Line 13084 int ncolors = 0, /* #different values
|
igray, grayscale = 256; /* bytemap contains intbyte's */ |
igray, grayscale = 256; /* bytemap contains intbyte's */ |
intbyte *bytevalues = NULL; /* 1's where bytemap contains value*/ |
intbyte *bytevalues = NULL; /* 1's where bytemap contains value*/ |
int ibyte; /* bytemap/colormap index */ |
int ibyte; /* bytemap/colormap index */ |
int isscale = 0; /* true to scale largest val to 255*/ |
int isscale = 0, /* true to scale largest val to 255*/ |
|
isgamma = 1; /* true to apply gamma correction */ |
int maxcolors = 0; /* maximum ncolors */ |
int maxcolors = 0; /* maximum ncolors */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Accumulate colors[] from values occurring in bytemap |
Accumulate colors[] from values occurring in bytemap |
Line 9532 if ( isscale ) /* only rescale if req
|
Line 13116 if ( isscale ) /* only rescale if req
|
{ colors[igray] = min2(grayscale-1,(int)(scalefactor*colors[igray]+0.5)); |
{ colors[igray] = min2(grayscale-1,(int)(scalefactor*colors[igray]+0.5)); |
if (igray>5) colors[igray] = min2(grayscale-1,colors[igray]+2*igray); } |
if (igray>5) colors[igray] = min2(grayscale-1,colors[igray]+2*igray); } |
} /* --- end-of-if(isscale) --- */ |
} /* --- end-of-if(isscale) --- */ |
|
/* --- apply gamma correction --- */ |
|
if ( isgamma /* only gamma correct if requested */ |
|
&& gammacorrection > 0.0001 ) /* and if we have gamma correction */ |
|
if ( ncolors > 1 ) /* and if not a "blank" raster */ |
|
if ( colors[ncolors-1] > 0 ) /*and at least one pixel non-white*/ |
|
{ |
|
for ( igray=1; igray<ncolors; igray++ ) { /*gamma correct each colors[]*/ |
|
int grayval = colors[igray], /* original 0=white to 255=black */ |
|
gmax = grayscale-1; /* should be 255 */ |
|
double dgray=((double)(gmax-grayval))/((double)gmax); /*0=black 1=white*/ |
|
dgray = pow(dgray,(1.0/gammacorrection)); /* apply gamma correction */ |
|
grayval = (int)( gmax*(1.0-dgray) + 0.5 ); /* convert back to grayval */ |
|
colors[igray] = grayval; } /* store back in colors[] */ |
|
} /* --- end-of-if(isgamma) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Construct colormap |
Construct colormap |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 9726 else /* center point not black */
|
Line 13324 else /* center point not black */
|
/*end_of_job:*/ |
/*end_of_job:*/ |
return ( aaimgval ); |
return ( aaimgval ); |
} /* --- end-of-function aawtpixel() --- */ |
} /* --- end-of-function aawtpixel() --- */ |
|
|
|
|
|
/* ========================================================================== |
|
* Function: mimetexsetmsg ( newmsglevel, newmsgfp ) |
|
* Purpose: Sets msglevel and msgfp, usually called from |
|
* an external driver (i.e., DRIVER not defined |
|
* in this module). |
|
* -------------------------------------------------------------------------- |
|
* Arguments: newmsglevel (I) int containing new msglevel |
|
* (unchanged if newmsglevel<0) |
|
* newmsgfp (I) FILE * containing new msgfp |
|
* (unchanged if newmsgfp=NULL) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) always 1 |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int mimetexsetmsg ( int newmsglevel, FILE *newmsgfp ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
set msglevel and msgfp |
|
-------------------------------------------------------------------------- */ |
|
if ( newmsglevel >= 0 ) msglevel = newmsglevel; |
|
if ( newmsgfp != NULL ) msgfp = newmsgfp; |
|
return ( 1 ); |
|
} /* --- end-of-function mimetexsetmsg() --- */ |
#endif /* PART3 */ |
#endif /* PART3 */ |
|
|
/* --- |
/* --- |
Line 9849 messages
|
Line 13474 messages
|
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
static char *copyright = /* copyright, gnu/gpl notice */ |
static char *copyright = /* copyright, gnu/gpl notice */ |
"+-----------------------------------------------------------------------+\n" |
"+-----------------------------------------------------------------------+\n" |
"|mimeTeX vers 1.61, Copyright(c) 2002-2005, John Forkosh Associates, Inc|\n" |
"|mimeTeX vers 1.64, Copyright(c) 2002-2006, John Forkosh Associates, Inc|\n" |
"+-----------------------------------------------------------------------+\n" |
"+-----------------------------------------------------------------------+\n" |
"| mimeTeX is free software, licensed to you under terms of the GNU/GPL, |\n" |
"| mimeTeX is free software, licensed to you under terms of the GNU/GPL, |\n" |
"| and comes with absolutely no warranty whatsoever. |\n" |
"| and comes with absolutely no warranty whatsoever. |\n" |
Line 9881 int main ( int argc, char *argv[]
|
Line 13506 int main ( int argc, char *argv[]
|
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- expression to be emitted --- */ |
/* --- expression to be emitted --- */ |
static char exprbuffer[16385] = "f(x)=x^2"; /* expression to be processed */ |
static char exprbuffer[MAXEXPRSZ+1] = "f(x)=x^2"; /* input TeX expression */ |
char *expression = exprbuffer; /* ptr to expression */ |
char *expression = exprbuffer; /* ptr to expression */ |
int size = NORMALSIZE; /* default font size */ |
int size = NORMALSIZE; /* default font size */ |
char *query = getenv("QUERY_STRING"); /* getenv("QUERY_STRING") result */ |
char *query = getenv("QUERY_STRING"); /* getenv("QUERY_STRING") result */ |
Line 9890 int unescape_url(); /* convert %xx's t
|
Line 13515 int unescape_url(); /* convert %xx's t
|
int emitcache(); /* emit cached image if it exists */ |
int emitcache(); /* emit cached image if it exists */ |
int isquery = 0, /* true if input from QUERY_STRING */ |
int isquery = 0, /* true if input from QUERY_STRING */ |
isqempty = 0, /* true if query string empty */ |
isqempty = 0, /* true if query string empty */ |
|
isqforce = 0, /* true to force query emulation */ |
isqlogging = 0, /* true if logging in query mode */ |
isqlogging = 0, /* true if logging in query mode */ |
isformdata = 0, /* true if input from html form */ |
isformdata = 0, /* true if input from html form */ |
isdumpimage = 0; /* true to dump image on stdout */ |
isinmemory = 1, /* true to generate image in memory*/ |
|
isdumpimage = 0, /* true to dump image on stdout */ |
|
isdumpbuffer = 0; /* true to dump to memory buffer */ |
/* --- rasterization --- */ |
/* --- rasterization --- */ |
subraster *rasterize(), *sp; /* rasterize expression */ |
subraster *rasterize(), *sp=NULL; /* rasterize expression */ |
raster *border_raster(), *bp; /* put a border around raster */ |
raster *border_raster(), *bp=NULL; /* put a border around raster */ |
|
int delete_subraster(); /* for clean-up at end-of-job */ |
int type_raster(), type_bytemap(), /* screen dump function prototypes */ |
int type_raster(), type_bytemap(), /* screen dump function prototypes */ |
xbitmap_raster(); /* mime xbitmap output function */ |
xbitmap_raster(); /* mime xbitmap output function */ |
/* --- http_referer --- */ |
/* --- http_referer --- */ |
Line 9918 int norefmaxlen = NOREFMAXLEN; /*max que
|
Line 13547 int norefmaxlen = NOREFMAXLEN; /*max que
|
void GIF_SetColor(),GIF_SetTransparent(); /* ...gifsave enntry points */ |
void GIF_SetColor(),GIF_SetTransparent(); /* ...gifsave enntry points */ |
#endif |
#endif |
char *gif_outfile = (char *)NULL, /* gif output defaults to stdout */ |
char *gif_outfile = (char *)NULL, /* gif output defaults to stdout */ |
|
gif_buffer[MAXGIFSZ] = "\000", /* or gif written in memory buffer */ |
cachefile[256] = "\000", /* full path and name to cache file*/ |
cachefile[256] = "\000", /* full path and name to cache file*/ |
*md5str(); /* md5 has of expression */ |
*md5str(); /* md5 has of expression */ |
int maxage = 7200; /* max-age is two hours */ |
int maxage = 7200; /* max-age is two hours */ |
|
/* --- pbm/pgm (-g switch) --- */ |
|
int ispbmpgm = 0; /* true to write pbm/pgm file */ |
|
int type_pbmpgm(), ptype=0; /* entry point, graphic format */ |
|
char *pbm_outfile = (char *)NULL; /* output file defaults to stdout */ |
/* --- anti-aliasing --- */ |
/* --- anti-aliasing --- */ |
intbyte *bytemap_raster = NULL, /* anti-aliased bitmap */ |
intbyte *bytemap_raster = NULL, /* anti-aliased bitmap */ |
colors[256]; /* grayscale vals in bytemap */ |
colors[256]; /* grayscale vals in bytemap */ |
Line 9928 int aalowpass(), aapnm(), /*lowpass fil
|
Line 13562 int aalowpass(), aapnm(), /*lowpass fil
|
grayscale = 256; /* 0-255 grayscales in 8-bit bytes */ |
grayscale = 256; /* 0-255 grayscales in 8-bit bytes */ |
int ncolors=2, /* #colors (2=b&w) */ |
int ncolors=2, /* #colors (2=b&w) */ |
aacolormap(); /* build colormap from bytemap */ |
aacolormap(); /* build colormap from bytemap */ |
|
int ipattern; /*patternnumcount[] index diagnostic*/ |
/* --- messages --- */ |
/* --- messages --- */ |
char logfile[256] = LOGFILE, /*log queries if msglevel>=LOGLEVEL*/ |
char logfile[256] = LOGFILE, /*log queries if msglevel>=LOGLEVEL*/ |
cachelog[256] = CACHELOG; /* cached image log in cachepath/ */ |
cachelog[256] = CACHELOG; /* cached image log in cachepath/ */ |
Line 9948 initialization
|
Line 13583 initialization
|
/* --- set global variables --- */ |
/* --- set global variables --- */ |
msgfp = stdout; /* for comamnd-line mode output */ |
msgfp = stdout; /* for comamnd-line mode output */ |
isss = issupersampling; /* set supersampling flag */ |
isss = issupersampling; /* set supersampling flag */ |
|
gifSize = 0; /* signal that image not in memory */ |
shrinkfactor = shrinkfactors[NORMALSIZE]; /* set shrinkfactor */ |
shrinkfactor = shrinkfactors[NORMALSIZE]; /* set shrinkfactor */ |
|
for ( ipattern=1; ipattern<=51; ipattern++ ) |
|
patternnumcount0[ipattern] = patternnumcount1[ipattern] = 0; |
/* --- |
/* --- |
* check QUERY_STRING query for expression overriding command-line arg |
* check QUERY_STRING query for expression overriding command-line arg |
* ------------------------------------------------------------------- */ |
* ------------------------------------------------------------------- */ |
if ( query != NULL ) /* check query string from environ */ |
if ( query != NULL ) /* check query string from environ */ |
if ( strlen(query) >= 1 ) /* caller gave us a query string */ |
if ( strlen(query) >= 1 ) /* caller gave us a query string */ |
{ strncpy(expression,query,16384); /* so use it as expression */ |
{ strncpy(expression,query,MAXEXPRSZ); /* so use it as expression */ |
expression[16384] = '\000'; /* make sure it's null terminated */ |
expression[MAXEXPRSZ] = '\000'; /* make sure it's null terminated */ |
isquery = 1; } /* and set isquery flag */ |
isquery = 1; } /* and set isquery flag */ |
if ( !isquery ) /* empty query string */ |
if ( !isquery ) /* empty query string */ |
{ char *host = getenv("HTTP_HOST"), /* additional getenv("") results */ |
{ char *host = getenv("HTTP_HOST"), /* additional getenv("") results */ |
*name = getenv("SERVER_NAME"), *addr = getenv("SERVER_ADDR"); |
*name = getenv("SERVER_NAME"), *addr = getenv("SERVER_ADDR"); |
if ( host!=NULL || name!=NULL || addr!=NULL ) /* assume http query */ |
if ( host!=NULL || name!=NULL || addr!=NULL ) /* assume http query */ |
{ isquery = 1; /* set flag to signal query */ |
{ isquery = 1; /* set flag to signal query */ |
strcpy(expression,"\\red\\small\\rm~missing~query~string"); } |
strcpy(expression,"\\red\\small\\fbox{\\rm~no~query~string}"); } |
isqempty = 1; /* signal empty query string */ |
isqempty = 1; /* signal empty query string */ |
} /* --- end-of-if(!isquery) --- */ |
} /* --- end-of-if(!isquery) --- */ |
/* --- |
/* --- |
Line 9997 if ( !isquery /* don't have an html q
|
Line 13635 if ( !isquery /* don't have an html q
|
if ( !isstopsignal /* haven't seen stopsignal switch */ |
if ( !isstopsignal /* haven't seen stopsignal switch */ |
&& *argv[argnum] == '-' ) /* and have some '-' switch */ |
&& *argv[argnum] == '-' ) /* and have some '-' switch */ |
{ |
{ |
char flag = tolower(*(argv[argnum]+1)); /* single char following '-' */ |
char *field = argv[argnum] + 1; /* ptr to char(s) following - */ |
int arglen = strlen(argv[argnum]) - 1; /* #chars following - */ |
char flag = tolower(*field); /* single char following '-' */ |
|
int arglen = strlen(field); /* #chars following - */ |
argnum++; /* arg following flag/switch is usually its value */ |
argnum++; /* arg following flag/switch is usually its value */ |
nswitches++; /* another switch on command line */ |
nswitches++; /* another switch on command line */ |
if ( isstrict && arglen!=1 ) /* only single-char switch allowed */ |
if ( isstrict && /* if strict checking then... */ |
|
!isthischar(flag,"g") && arglen!=1 ) /*must be single-char switch*/ |
{ nbadargs++; argnum--; } /* so ignore longer -xxx switch */ |
{ nbadargs++; argnum--; } /* so ignore longer -xxx switch */ |
else /* process single-char -x switch */ |
else /* process single-char -x switch */ |
switch ( flag ) { /* see what user wants to tell us */ |
switch ( flag ) { /* see what user wants to tell us */ |
/* --- ignore uninterpreted flag --- */ |
/* --- ignore uninterpreted flag --- */ |
default: nbadargs++; argnum--; break; |
default: nbadargs++; argnum--; break; |
/* --- adjustable program parameters (not checking input) --- */ |
/* --- adjustable program parameters (not checking input) --- */ |
|
case 'b': isdumpimage++; isdumpbuffer++; argnum--; break; |
case 'd': isdumpimage++; argnum--; break; |
case 'd': isdumpimage++; argnum--; break; |
case 'e': isdumpimage++; gif_outfile=argv[argnum]; break; |
case 'e': isdumpimage++; gif_outfile=argv[argnum]; break; |
case 'f': isdumpimage++; infilearg=argnum; break; |
case 'f': isdumpimage++; infilearg=argnum; break; |
|
case 'g': ispbmpgm++; |
|
if ( arglen > 1 ) ptype = atoi(field+1); /* -g2 ==> ptype=2 */ |
|
if ( 1 || *argv[argnum]=='-' ) argnum--; /*next arg is -switch*/ |
|
else pbm_outfile = argv[argnum]; break; /*next arg is filename*/ |
case 'm': msglevel = atoi(argv[argnum]); break; |
case 'm': msglevel = atoi(argv[argnum]); break; |
case 'o': istransparent = 0; argnum--; break; |
case 'o': istransparent = (istransparent?0:1); argnum--; break; |
|
case 'q': isqforce = 1; argnum--; break; |
case 's': size = atoi(argv[argnum]); break; |
case 's': size = atoi(argv[argnum]); break; |
} /* --- end-of-switch(flag) --- */ |
} /* --- end-of-switch(flag) --- */ |
} /* --- end-of-if(*argv[argnum]=='-') --- */ |
} /* --- end-of-if(*argv[argnum]=='-') --- */ |
Line 10024 if ( !isquery /* don't have an html q
|
Line 13670 if ( !isquery /* don't have an html q
|
else nbadargs++; /* infile and expression invalid */ |
else nbadargs++; /* infile and expression invalid */ |
} /* --- end-of-while(argc>++argnum) --- */ |
} /* --- end-of-while(argc>++argnum) --- */ |
if ( msglevel>=999 && msgfp!=NULL ) /* display command-line info */ |
if ( msglevel>=999 && msgfp!=NULL ) /* display command-line info */ |
fprintf(msgfp,"argc=%d, progname=%s, #args=%d, #badargs=%d\n", |
{ fprintf(msgfp,"argc=%d, progname=%s, #args=%d, #badargs=%d\n", |
argc,progname,nargs,nbadargs); |
argc,progname,nargs,nbadargs); |
|
fprintf(msgfp,"cachepath=\"%.50s\" pathprefix=\"%.50s\"\n", |
|
cachepath,pathprefix); } |
/* --- |
/* --- |
* decide whether command-line input overrides query_string |
* decide whether command-line input overrides query_string |
* -------------------------------------------------------- */ |
* -------------------------------------------------------- */ |
Line 10040 if ( !isquery /* don't have an html q
|
Line 13688 if ( !isquery /* don't have an html q
|
&& infilearg <= 0 ) /* and not given in input file */ |
&& infilearg <= 0 ) /* and not given in input file */ |
if ( !isquery /* no conflict if no query_string */ |
if ( !isquery /* no conflict if no query_string */ |
|| nswitches > 0 ) /* explicit -switch(es) also given */ |
|| nswitches > 0 ) /* explicit -switch(es) also given */ |
{ strncpy(expression,argv[exprarg],16384); /*expression from command-line*/ |
{ strncpy(expression,argv[exprarg],MAXEXPRSZ); /*expr from command-line*/ |
expression[16384] = '\000'; /* make sure it's null terminated */ |
expression[MAXEXPRSZ] = '\000'; /* make sure it's null terminated */ |
isquery = 0; } /* and not from a query_string */ |
isquery = 0; } /* and not from a query_string */ |
/* --- |
/* --- |
* or read expression from input file |
* or read expression from input file |
Line 10050 if ( !isquery /* don't have an html q
|
Line 13698 if ( !isquery /* don't have an html q
|
{ |
{ |
FILE *infile = fopen(argv[infilearg],"r"); /* open input file for read */ |
FILE *infile = fopen(argv[infilearg],"r"); /* open input file for read */ |
if ( infile != (FILE *)NULL ) /* opened input file successfully */ |
if ( infile != (FILE *)NULL ) /* opened input file successfully */ |
{ char instring[2049]; /* line from file */ |
{ char instring[MAXLINESZ+1]; /* line from file */ |
|
int exprsz = 0; /* total #bytes read from file */ |
isquery = 0; /* file input, not a query_string */ |
isquery = 0; /* file input, not a query_string */ |
*expression = '\000'; /* start expresion as empty string */ |
*expression = '\000'; /* start expresion as empty string */ |
while ( fgets(instring,2048,infile) != (char *)NULL ) /* read till eof*/ |
while ( fgets(instring,MAXLINESZ,infile) != (char *)NULL ) /*till eof*/ |
strcat(expression,instring); /* concat line to end of expression*/ |
if ( exprsz + strlen(instring) < MAXEXPRSZ ) { /* have room for line */ |
|
strcat(expression,instring); /* concat line to end of expression*/ |
|
exprsz += strlen(instring); } /* update expression buffer length */ |
fclose ( infile ); } /*close input file after reading expression*/ |
fclose ( infile ); } /*close input file after reading expression*/ |
} /* --- end-of-if(infilearg>0) --- */ |
} /* --- end-of-if(infilearg>0) --- */ |
|
/* --- |
|
* xlate +++'s to blanks only if query |
|
* ----------------------------------- */ |
|
if ( !isquery ) isplusblank = 0; /* don't xlate +++'s to blanks */ |
|
/* --- |
|
* check if emulating query (for testing) |
|
* -------------------------------------- */ |
|
if ( isqforce ) isquery = 1; /* emulate query string processing */ |
|
/* --- |
|
* check if emitting pbm/pgm graphic |
|
* --------------------------------- */ |
|
if ( isgoodargs && ispbmpgm > 0 ) /* have a good -g arg */ |
|
if ( 1 && gif_outfile != NULL ) /* had an -e switch with file */ |
|
if ( *gif_outfile != '\000' ) /* make sure string isn't empty */ |
|
{ pbm_outfile = gif_outfile; /* use -e switch file for pbm/pgm */ |
|
gif_outfile = (char *)NULL; /* reset gif output file */ |
|
/*isdumpimage--;*/ } /* and decrement -e count */ |
} /* --- end-of-if(!isquery) --- */ |
} /* --- end-of-if(!isquery) --- */ |
/* --- |
/* --- |
* check for <form> input |
* check for <form> input |
* ---------------------- */ |
* ---------------------- */ |
if ( isquery ) /* must be <form method="get"> */ |
if ( isquery ) { /* must be <form method="get"> */ |
if ( !memcmp(expression,"formdata",8) ) /*must be <input name="formdata"> */ |
if ( !memcmp(expression,"formdata",8) ) /*must be <input name="formdata"> */ |
{ char *delim=strchr(expression,'='); /* find equal following formdata */ |
{ char *delim=strchr(expression,'='); /* find equal following formdata */ |
if ( delim != (char *)NULL ) /* found unescaped equal sign */ |
if ( delim != (char *)NULL ) /* found unescaped equal sign */ |
Line 10071 if ( isquery ) /* must be <form metho
|
Line 13739 if ( isquery ) /* must be <form metho
|
/*unescape_url(expression,1);*/ /* convert unescaped %xx's to chars */ |
/*unescape_url(expression,1);*/ /* convert unescaped %xx's to chars */ |
unescape_url(expression,0); /* convert all %xx's to chars */ |
unescape_url(expression,0); /* convert all %xx's to chars */ |
unescape_url(expression,0); /* repeat */ |
unescape_url(expression,0); /* repeat */ |
msglevel = FORMLEVEL; /* msglevel for forms */ |
if(0) msglevel = FORMLEVEL; /* msglevel for forms */ |
isformdata = 1; } /* set flag to signal form data */ |
isformdata = 1; } /* set flag to signal form data */ |
else /* --- query, but not <form> input --- */ |
else /* --- query, but not <form> input --- */ |
unescape_url(expression,0); /* convert _all_ %xx's to chars */ |
unescape_url(expression,0); } /* convert _all_ %xx's to chars */ |
/* --- |
/* --- |
* check queries for embedded prefixes signalling special processing |
* check queries for embedded prefixes signalling special processing |
* ----------------------------------------------------------------- */ |
* ----------------------------------------------------------------- */ |
Line 10104 if ( isquery ) /* only log query_stri
|
Line 13772 if ( isquery ) /* only log query_stri
|
if ( msglevel >= LOGLEVEL /* check if logging */ |
if ( msglevel >= LOGLEVEL /* check if logging */ |
&& seclevel <= 5 ) /* and if logging permitted */ |
&& seclevel <= 5 ) /* and if logging permitted */ |
if ( logfile != NULL ) /* if a logfile is given */ |
if ( logfile != NULL ) /* if a logfile is given */ |
if ( *logfile != '\000' ) /*and if it's not an empty string*/ |
if ( *logfile != '\000' ) { /*and if it's not an empty string*/ |
if ( (msgfp=fopen(logfile,"a")) /* open logfile for append */ |
if ( (msgfp=fopen(logfile,"a")) /* open logfile for append */ |
!= NULL ) /* ignore logging if can't open */ |
!= NULL ) /* ignore logging if can't open */ |
{ |
{ |
Line 10155 if ( isquery ) /* only log query_stri
|
Line 13823 if ( isquery ) /* only log query_stri
|
isqlogging = 1; /* set query logging flag */ |
isqlogging = 1; /* set query logging flag */ |
} /* --- end-of-if(msglevel>=LOGLEVEL) --- */ |
} /* --- end-of-if(msglevel>=LOGLEVEL) --- */ |
else /* couldn't open logfile */ |
else /* couldn't open logfile */ |
msglevel = 0; /* can't emit messages */ |
msglevel = 0; } /* can't emit messages */ |
/* --- |
/* --- |
* prepend prefix to submitted expression |
* prepend prefix to submitted expression |
* -------------------------------------- */ |
* -------------------------------------- */ |
Line 10221 if ( isquery ) /* not relevant if "in
|
Line 13889 if ( isquery ) /* not relevant if "in
|
/* --- |
/* --- |
* check for image caching |
* check for image caching |
* ----------------------- */ |
* ----------------------- */ |
if ( strstr(expression,"\\counter") != NULL /* can't cache \counter{} */ |
if ( strstr(expression,"\\counter") != NULL /* can't cache \counter{} */ |
|| strstr(expression,"\\input") != NULL /* can't cache \input{} */ |
|| strstr(expression,"\\input") != NULL /* can't cache \input{} */ |
|| strstr(expression,"\\nocach") != NULL /* no caching requested */ |
|| strstr(expression,"\\today") != NULL /* can't cache \today */ |
|
|| strstr(expression,"\\calendar") != NULL /* can't cache \calendar */ |
|
|| strstr(expression,"\\nocach") != NULL /* no caching requested */ |
|
|| isformdata /* don't cache user form input */ |
) { iscaching = 0; /* so turn caching off */ |
) { iscaching = 0; /* so turn caching off */ |
maxage = 2; } /* and set max-age to two seconds */ |
maxage = 5; } /* and set max-age to 5 seconds */ |
if ( isquery ) /* don't cache command-line images */ |
if ( isquery ) /* don't cache command-line images */ |
if ( iscaching ) /* image caching enabled */ |
if ( iscaching ) /* image caching enabled */ |
{ |
{ |
Line 10239 if ( isquery ) /* don't cache command
|
Line 13910 if ( isquery ) /* don't cache command
|
strcat(cachefile,md5hash); /* add md5 hash of expression */ |
strcat(cachefile,md5hash); /* add md5 hash of expression */ |
strcat(cachefile,".gif"); /* finish with .gif extension */ |
strcat(cachefile,".gif"); /* finish with .gif extension */ |
gif_outfile = cachefile; /* signal GIF_Create() to cache */ |
gif_outfile = cachefile; /* signal GIF_Create() to cache */ |
/* --- (always) emit mime content-type line --- */ |
/* --- emit mime content-type line --- */ |
fprintf( stdout, "Cache-Control: max-age=%d\n",maxage ); |
if ( 0 && isemitcontenttype ) /* now done in emitcache() */ |
fprintf( stdout, "Content-type: image/gif\n\n" ); |
{ fprintf( stdout, "Cache-Control: max-age=%d\n",maxage ); |
|
fprintf( stdout, "Content-type: image/gif\n\n" ); } |
/* --- emit cached image if it already exists --- */ |
/* --- emit cached image if it already exists --- */ |
if ( emitcache(cachefile) > 0 ) /* cached image emitted */ |
if ( emitcache(cachefile,maxage,0) > 0 ) /* cached image emitted */ |
goto end_of_job; /* so nothing else to do */ |
goto end_of_job; /* so nothing else to do */ |
/* --- log caching request --- */ |
/* --- log caching request --- */ |
if ( msglevel >= 1 /* check if logging */ |
if ( msglevel >= 1 /* check if logging */ |
Line 10258 if ( isquery ) /* don't cache command
|
Line 13930 if ( isquery ) /* don't cache command
|
!= NULL ) /* ignore logging if can't open */ |
!= NULL ) /* ignore logging if can't open */ |
{ int isreflogged = 0; /* set true if http_referer logged */ |
{ int isreflogged = 0; /* set true if http_referer logged */ |
fprintf(filefp,"%s %s\n", /* timestamp, md5 file */ |
fprintf(filefp,"%s %s\n", /* timestamp, md5 file */ |
timestamp(),cachefile+strlen(cachepath)); /* (path not shown) */ |
timestamp(TZDELTA,0),cachefile+strlen(cachepath)); /*skip path*/ |
fprintf(filefp,"%s\n",expression); /* expression in filename */ |
fprintf(filefp,"%s\n",expression); /* expression in filename */ |
if ( http_referer != NULL ) /* show referer if we have one */ |
if ( http_referer != NULL ) /* show referer if we have one */ |
if ( *http_referer != '\000' ) /* and if not an empty string*/ |
if ( *http_referer != '\000' ) /* and if not an empty string*/ |
Line 10305 if ( issupersampling ) /* no border ne
|
Line 13977 if ( issupersampling ) /* no border ne
|
else /* for mime xbitmaps must have... */ |
else /* for mime xbitmaps must have... */ |
bp = border_raster(sp->image,0,0,0,1); /* image width multiple of 8 bits */ |
bp = border_raster(sp->image,0,0,0,1); /* image width multiple of 8 bits */ |
sp->image = bitmap_raster = bp; /* global copy for gif,png output */ |
sp->image = bitmap_raster = bp; /* global copy for gif,png output */ |
|
if ( ispbmpgm && ptype<2 ) /* -g switch or -g1 switch */ |
|
type_pbmpgm(bp,ptype,pbm_outfile); /* emit b/w pbm file */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
generate anti-aliased bytemap from (bordered) bitmap |
generate anti-aliased bytemap from (bordered) bitmap |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
Line 10334 if ( isaa ) /* we want anti-aliased b
|
Line 14008 if ( isaa ) /* we want anti-aliased b
|
* select anti-aliasing algorithm |
* select anti-aliasing algorithm |
* ------------------------------ */ |
* ------------------------------ */ |
if ( !isss ) /* generate bytemap for lowpass */ |
if ( !isss ) /* generate bytemap for lowpass */ |
if ( aaalgorithm == 1 ) /* 1 for aalowpass() */ |
switch ( aaalgorithm ) { /* choose antialiasing algorithm */ |
{ if ( aalowpass(bp,bytemap_raster,grayscale) /* my lowpass filter */ |
default: isaa = 0; break; /* unrecognized algorithm */ |
== 0 ) isaa = 0; } /*failed, so turn off anti-aliasing*/ |
case 1: /* 1 for aalowpass() */ |
else /* or 2 for aapnm() */ |
if ( aalowpass(bp,bytemap_raster,grayscale) /*my own lowpass filter*/ |
if ( aaalgorithm == 2 ) /*2 for netpbm pnmalias.c algorithm*/ |
== 0 ) isaa = 0; /*failed, so turn off anti-aliasing*/ |
{ if ( aapnm(bp,bytemap_raster,grayscale) /* pnmalias.c filter */ |
break; |
== 0 ) isaa = 0; } /*failed, so turn off anti-aliasing*/ |
case 2: /*2 for netpbm pnmalias.c algorithm*/ |
else isaa = 0; /* unrecognized algorithm */ |
if ( aapnm(bp,bytemap_raster,grayscale) /* pnmalias.c filter */ |
|
== 0 ) isaa = 0; /*failed, so turn off anti-aliasing*/ |
|
break; |
|
case 3: /*3 for aapnm() based on aagridnum()*/ |
|
if ( aapnmlookup(bp,bytemap_raster,grayscale) /* pnmalias.c filter */ |
|
== 0 ) isaa = 0; /*failed, so turn off anti-aliasing*/ |
|
break; |
|
case 4: /* 4 for aalookup() table lookup */ |
|
if ( aalowpasslookup(bp,bytemap_raster,grayscale) /* aalookup() */ |
|
== 0 ) isaa = 0; /*failed, so turn off anti-aliasing*/ |
|
break; |
|
} /* --- end-of-switch(aaalgorithm) --- */ |
|
/* --- |
|
* emit aalookup() pattern# counts/percents diagnostics |
|
* ---------------------------------------------------- */ |
|
if ( !isquery && msgfp!=NULL && msglevel>=99 ) { /*emit patternnumcounts*/ |
|
int pcount0=0, pcount1=0; /* init total w,b center counts */ |
|
for ( ipattern=1; ipattern<=51; ipattern++ ) { /*each possible pattern*/ |
|
if ( ipattern > 1 ) /* ignore all-white squares */ |
|
pcount0 += patternnumcount0[ipattern]; /* bump total white centers */ |
|
pcount1 += patternnumcount1[ipattern]; } /* bump total black centers */ |
|
if ( pcount0+pcount1 > 0 ) /* have pcounts (using aalookup) */ |
|
fprintf(msgfp, " aalookup() patterns excluding#1 white" |
|
" (%%'s are in tenths of a percent)...\n"); |
|
for ( ipattern=1; ipattern<=51; ipattern++ ) { /*each possible pattern*/ |
|
int tot = patternnumcount0[ipattern] + patternnumcount1[ipattern]; |
|
if ( tot > 0 ) /* this pattern occurs in image */ |
|
fprintf(msgfp, |
|
" pattern#%2d: %7d(%6.2f%%) +%7d(%6.2f%%) =%7d(%6.2f%%)\n", |
|
ipattern, patternnumcount0[ipattern], (ipattern<=1? 999.99: |
|
1000.*((double)patternnumcount0[ipattern])/((double)pcount0)), |
|
patternnumcount1[ipattern], |
|
1000.*((double)patternnumcount1[ipattern])/((double)pcount1), |
|
tot, (ipattern<=1? 999.99: |
|
1000.*((double)tot)/((double)(pcount0+pcount1))) ); } |
|
if ( pcount0+pcount1 > 0 ) /* true when using aalookup() */ |
|
fprintf(msgfp, |
|
"all patterns: %7d +%7d =%7d total pixels\n", |
|
pcount0,pcount1,pcount0+pcount1); } |
/* --- |
/* --- |
* finally, generate colors and colormap |
* finally, generate colors and colormap |
* ------------------------------------- */ |
* ------------------------------------- */ |
Line 10351 if ( isaa ) /* we want anti-aliased b
|
Line 14063 if ( isaa ) /* we want anti-aliased b
|
{ isaa = 0; /* so turn off anti-aliasing */ |
{ isaa = 0; /* so turn off anti-aliasing */ |
ncolors = 2; } /* and reset for black&white */ |
ncolors = 2; } /* and reset for black&white */ |
} /* --- end-of-if(isaa) --- */ |
} /* --- end-of-if(isaa) --- */ |
|
if ( isaa && ispbmpgm && ptype>1 ) { /* -g2 switch */ |
|
raster pbm_raster; /*construct arg for write_pbmpgm()*/ |
|
pbm_raster.width = bp->width; pbm_raster.height = bp->height; |
|
pbm_raster.pixsz = 8; pbm_raster.pixmap = (pixbyte *)bytemap_raster; |
|
type_pbmpgm(&pbm_raster,ptype,pbm_outfile); } /*write grayscale file*/ |
} /* --- end-of-if(isaa) --- */ |
} /* --- end-of-if(isaa) --- */ |
} /* --- end-of-if(isaa) --- */ |
} /* --- end-of-if(isaa) --- */ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Line 10392 if ( (!isquery||isqlogging) || msglevel
|
Line 14109 if ( (!isquery||isqlogging) || msglevel
|
emit xbitmap or gif image, and exit |
emit xbitmap or gif image, and exit |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
if ( isquery /* called from browser (usual) */ |
if ( isquery /* called from browser (usual) */ |
|| isdumpimage /* or to emit dump of image */ |
|| (isdumpimage && !ispbmpgm) /* or to emit gif dump of image */ |
|| msglevel >= 99 ) /* or for debugging */ |
|| msglevel >= 99 ) /* or for debugging */ |
{ |
{ |
int igray = 0; /* grayscale index */ |
int igray = 0; /* grayscale index */ |
Line 10400 if ( isquery /* called from browser
|
Line 14117 if ( isquery /* called from browser
|
/* ------------------------------------------------------------------------ |
/* ------------------------------------------------------------------------ |
emit GIF image |
emit GIF image |
------------------------------------------------------------------------- */ |
------------------------------------------------------------------------- */ |
|
/* --- don't use memory buffer if outout file given --- */ |
|
if ( gif_outfile != NULL ) isinmemory = 0; /* reset memory buffer flag */ |
/* --- emit mime content-type line --- */ |
/* --- emit mime content-type line --- */ |
if ( !isdumpimage /* don't mix ascii with image dump */ |
if ( isemitcontenttype /* content-type lines wanted */ |
&& !iscaching ) /* already emitted if caching */ |
&& !isdumpimage /* don't mix ascii with image dump */ |
|
&& !isinmemory /* done below if in memory */ |
|
&& !iscaching ) /* done by emitcache() if caching */ |
{ fprintf( stdout, "Cache-Control: max-age=%d\n",maxage ); |
{ fprintf( stdout, "Cache-Control: max-age=%d\n",maxage ); |
/*fprintf( stdout, "Expires: Fri, 31 Oct 2003 23:59:59 GMT\n" );*/ |
/*fprintf( stdout, "Expires: Fri, 31 Oct 2003 23:59:59 GMT\n" );*/ |
/*fprintf( stdout, "Last-Modified: Wed, 15 Oct 2003 01:01:01 GMT\n" );*/ |
/*fprintf( stdout, "Last-Modified: Wed, 15 Oct 2003 01:01:01 GMT\n" );*/ |
fprintf( stdout, "Content-type: image/gif\n\n" ); } |
fprintf( stdout, "Content-type: image/gif\n\n" ); } |
|
/* --- write output to memory buffer, possibly for testing --- */ |
|
if ( isinmemory /* want gif written to memory */ |
|
|| isdumpbuffer ) /*or dump memory buffer for testing*/ |
|
if ( gif_outfile == NULL ) /* and don't already have a file */ |
|
{ *gif_buffer = '\000'; /* init buffer as empty string */ |
|
memset(gif_buffer,0,MAXGIFSZ); /* zero out buffer */ |
|
gif_outfile = gif_buffer; /* and point outfile to buffer */ |
|
if ( isdumpbuffer ) /* buffer dump test requested */ |
|
isdumpbuffer = 999; } /* so signal dumping to buffer */ |
/* --- initialize gifsave library and colors --- */ |
/* --- initialize gifsave library and colors --- */ |
if ( msgfp!=NULL && msglevel>=999 ) |
if ( msgfp!=NULL && msglevel>=999 ) |
fprintf(msgfp,"main> calling GIF_Create(*,%d,%d,%d,8)\n", |
{ fprintf(msgfp,"main> calling GIF_Create(*,%d,%d,%d,8)\n", |
bp->width,bp->height,ncolors); |
bp->width,bp->height,ncolors); fflush(msgfp); } |
while ( 1 ) /* init gifsave lib, and retry if caching fails */ |
while ( 1 ) /* init gifsave lib, and retry if caching fails */ |
{ int status = GIF_Create(gif_outfile, bp->width,bp->height, ncolors, 8); |
{ int status = GIF_Create(gif_outfile, bp->width,bp->height, ncolors, 8); |
if ( status == 0 ) break; /* continue if succeeded */ |
if ( status == 0 ) break; /* continue if succeeded */ |
if ( iscaching == 0 ) goto end_of_job; /* quit if failed */ |
if ( iscaching == 0 ) goto end_of_job; /* quit if failed */ |
iscaching = 0; /* retry without cache file */ |
iscaching = 0; /* retry without cache file */ |
gif_outfile = (char *)NULL; } /* emit images to stdout */ |
isdumpbuffer = 0; /* reset isdumpbuffer signal */ |
|
if ( isquery ) isinmemory = 1; /* force in-memory image generation*/ |
|
if ( isinmemory ) { /* using memory buffer */ |
|
gif_outfile = gif_buffer; /* emit images to memory buffer */ |
|
*gif_outfile = '\000'; } /* empty string signals buffer */ |
|
else { /* or */ |
|
gif_outfile = (char *)NULL; /* emit images to stdout */ |
|
if ( isemitcontenttype ) { /* content-type lines wanted */ |
|
fprintf( stdout, "Cache-Control: max-age=%d\n",maxage ); |
|
fprintf( stdout, "Content-type: image/gif\n\n" ); } } |
|
} /* --- end-of-while(1) --- */ |
GIF_SetColor(0,bgred,bggreen,bgblue); /* background white if all 255 */ |
GIF_SetColor(0,bgred,bggreen,bgblue); /* background white if all 255 */ |
if ( !isaa ) /* just b&w if not anti-aliased */ |
if ( !isaa ) /* just b&w if not anti-aliased */ |
{ GIF_SetColor(1,fgred,fggreen,fgblue); /* foreground black if all 0 */ |
{ GIF_SetColor(1,fgred,fggreen,fgblue); /* foreground black if all 0 */ |
Line 10441 if ( isquery /* called from browser
|
Line 14181 if ( isquery /* called from browser
|
/* --- emit compressed gif image (to stdout or cache file) --- */ |
/* --- emit compressed gif image (to stdout or cache file) --- */ |
GIF_CompressImage(0, 0, -1, -1, GetPixel); /* emit gif */ |
GIF_CompressImage(0, 0, -1, -1, GetPixel); /* emit gif */ |
GIF_Close(); /* close file */ |
GIF_Close(); /* close file */ |
/* --- may need to emit image from cached file --- */ |
if ( msgfp!=NULL && msglevel>=9 ) |
if ( isquery && iscaching ) /* caching enabled */ |
{ fprintf(msgfp,"main> created gifSize=%d\n", gifSize); |
emitcache(cachefile); /* cached image (hopefully) emitted*/ |
fflush(msgfp); } |
|
/* --- may need to emit image from cached file or from memory --- */ |
|
if ( isquery /* have an actual query string */ |
|
|| isdumpimage /* or dumping image */ |
|
|| msglevel >= 99 ) { /* or debugging */ |
|
int maxage2 = (isdumpimage?(-1):maxage); /* no headers if dumping image */ |
|
if ( iscaching ) /* caching enabled */ |
|
emitcache(cachefile,maxage2,0); /* cached image (hopefully) emitted*/ |
|
else if ( isinmemory ) /* or emit image from memory buffer*/ |
|
emitcache(gif_buffer,maxage2,1); } /* emitted from memory buffer */ |
|
/* --- for testing, may need to write image buffer to file --- */ |
|
if ( isdumpbuffer > 99 ) /* gif image in memory buffer */ |
|
if ( gifSize > 0 ) /* and it's not an empty buffer */ |
|
{ FILE *dumpfp = fopen("mimetex.gif","wb"); /* dump to mimetex.gif */ |
|
if ( dumpfp != NULL ) /* file opened successfully */ |
|
{ fwrite(gif_buffer,sizeof(unsigned char),gifSize,dumpfp); /*write*/ |
|
fclose(dumpfp); } /* and close file */ |
|
} /* --- end-of-if(isdumpbuffer>99) --- */ |
#else |
#else |
/* ------------------------------------------------------------------------ |
/* ------------------------------------------------------------------------ |
emit mime XBITMAP image |
emit mime XBITMAP image |
Line 10453 if ( isquery /* called from browser
|
Line 14210 if ( isquery /* called from browser
|
} /* --- end-of-if(isquery) --- */ |
} /* --- end-of-if(isquery) --- */ |
/* --- exit --- */ |
/* --- exit --- */ |
end_of_job: |
end_of_job: |
if ( bytemap_raster != NULL ) free(bytemap_raster); /*free bytemap_raster*/ |
if ( !isss ) /*bytemap raster in sp for supersamp*/ |
|
if ( bytemap_raster != NULL ) free(bytemap_raster);/*free bytemap_raster*/ |
if (colormap_raster != NULL )free(colormap_raster); /*and colormap_raster*/ |
if (colormap_raster != NULL )free(colormap_raster); /*and colormap_raster*/ |
|
if ( 0 && gif_buffer != NULL ) free(gif_buffer); /* free malloced buffer */ |
|
if ( 1 && sp != NULL ) delete_subraster(sp); /* and free expression */ |
if ( msgfp != NULL /* have message/log file open */ |
if ( msgfp != NULL /* have message/log file open */ |
&& msgfp != stdout ) /* and it's not stdout */ |
&& msgfp != stdout ) /* and it's not stdout */ |
{ fprintf(msgfp,"mimeTeX> successful end-of-job at %s\n",timestamp()); |
{ fprintf(msgfp,"mimeTeX> successful end-of-job at %s\n", |
|
timestamp(TZDELTA,0)); |
fprintf(msgfp,"%s\n",dashes); /* so log separator line */ |
fprintf(msgfp,"%s\n",dashes); /* so log separator line */ |
fclose(msgfp); } /* and close logfile */ |
fclose(msgfp); } /* and close logfile */ |
exit ( 0 ); |
/* --- dump memory leaks in debug window if in MS VC++ debug mode --- */ |
|
#if defined(_CRTDBG_MAP_ALLOC) |
|
_CrtDumpMemoryLeaks(); |
|
#endif |
|
/* --- exit() if not running as Windows DLL (see CreateGifFromEq()) --- */ |
|
#if !defined(_USRDLL) |
|
exit ( 0 ); |
|
#endif |
} /* --- end-of-function main() --- */ |
} /* --- end-of-function main() --- */ |
|
|
/* ========================================================================== |
/* ========================================================================== |
|
* Function: CreateGifFromEq ( expression, gifFileName ) |
|
* Purpose: shortcut method to create GIF file for expression, |
|
* with antialising and all other capabilities |
|
* -------------------------------------------------------------------------- |
|
* Arguments: expression (I) char *ptr to null-terminated string |
|
* containing LaTeX expression to be rendred |
|
* gifFileName (I) char *ptr to null-terminated string |
|
* containing name of output gif file |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) exit value from main (0 if successful) |
|
* -------------------------------------------------------------------------- |
|
* Notes: o This function is the entry point when mimeTeX is built |
|
* as a Win32 DLL rather then a standalone app or CGI |
|
* o Contributed to mimeTeX by Shital Shah. See his homepage |
|
* http://www.shitalshah.com |
|
* o Shital discusses the mimeTeX Win32 DLL project at |
|
* http://www.codeproject.com/dotnet/Eq2Img.asp |
|
* and you can download his latest code from |
|
* http://www.shitalshah.com/dev/eq2img_all.zip |
|
* ======================================================================= */ |
|
/* --- include function to expose Win32 DLL to outside world --- */ |
|
#if defined(_USRDLL) |
|
extern _declspec(dllexport)int _cdecl |
|
CreateGifFromEq ( char *expression, char *gifFileName ); |
|
#endif |
|
/* --- entry point --- */ |
|
int CreateGifFromEq ( char *expression, char *gifFileName ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
int main(); /* main() akways returns an int */ |
|
/* --- set constants --- */ |
|
int argc = 4; /* count of args supplied to main() */ |
|
char *argv[5] = /* command line args to run with -e option */ |
|
{ "MimeTeXWin32DLL", "-e", /* constant args */ |
|
/*gifFileName, expression,*/ NULL, NULL, NULL }; |
|
/* --- set argv[]'s not computable at load time --- */ |
|
argv[2] = gifFileName; /* args are -e gifFileName */ |
|
argv[3] = expression; /* and now -e gifFileName expression */ |
|
/* ------------------------------------------------------------------------- |
|
Run mimeTeX in command-line mode with -e (export) option, and then return |
|
-------------------------------------------------------------------------- */ |
|
return main ( argc, argv |
|
#ifdef DUMPENVP |
|
, NULL |
|
#endif |
|
) ; |
|
} /* --- end-of-function CreateGifFromEq() --- */ |
|
|
|
/* ========================================================================== |
* Function: isstrstr ( char *string, char *snippets, int iscase ) |
* Function: isstrstr ( char *string, char *snippets, int iscase ) |
* Purpose: determine whether any substring of 'string' |
* Purpose: determine whether any substring of 'string' |
* matches any of the comma-separated list of 'snippets', |
* matches any of the comma-separated list of 'snippets', |
Line 10612 end_of_job:
|
Line 14431 end_of_job:
|
* ftp://ftp.ncsa.uiuc.edu/Web/httpd/Unix/ncsa_httpd/cgi/ncsa-default.tar.Z |
* ftp://ftp.ncsa.uiuc.edu/Web/httpd/Unix/ncsa_httpd/cgi/ncsa-default.tar.Z |
* o Not quite "verbatim" -- I added the "isescape logic" 4-Dec-03 |
* o Not quite "verbatim" -- I added the "isescape logic" 4-Dec-03 |
* so unescape_url() can be safely applied to input which may or |
* so unescape_url() can be safely applied to input which may or |
* may not have been url-encoded. |
* may not have been url-encoded. (Note: currently, all calls |
|
* to unescape_url() pass iescape=0, so it's not used.) |
|
* o Added +++'s to blank xlation on 24-Sep-06 |
|
* o Added ^M,^F,etc to blank xlation 0n 01-Oct-06 |
* ======================================================================= */ |
* ======================================================================= */ |
/* --- entry point --- */ |
/* --- entry point --- */ |
int unescape_url(char *url, int isescape) { |
int unescape_url(char *url, int isescape) { |
int x=0,y=0,prevescape=0,gotescape=0; |
int x=0,y=0,prevescape=0,gotescape=0; |
|
int xlateplus = (isplusblank==1?1:0); /* true to xlate plus to blank */ |
|
int strreplace(); /* replace + with blank, if needed */ |
char x2c(); |
char x2c(); |
static char *hex="0123456789ABCDEFabcdef"; |
static char *hex="0123456789ABCDEFabcdef"; |
|
/* --- |
|
* xlate ctrl chars to blanks |
|
* -------------------------- */ |
|
if ( 1 ) { /* xlate ctrl chars to blanks */ |
|
char *ctrlchars = "\n\t\v\b\r\f\a\015"; |
|
int seglen = strspn(url,ctrlchars); /*initial segment with ctrlchars*/ |
|
int urllen = strlen(url); /* total length of url string */ |
|
/* --- first, entirely remove ctrlchars from beginning and end --- */ |
|
if ( seglen > 0 ) { /*have ctrlchars at start of string*/ |
|
strcpy(url,url+seglen); /* squeeze out initial ctrlchars */ |
|
urllen -= seglen; } /* string is now shorter */ |
|
while ( --urllen >= 0 ) /* now remove ctrlchars from end */ |
|
if ( isthischar(url[urllen],ctrlchars) ) /* ctrlchar at end */ |
|
url[urllen] = '\000'; /* re-terminate string before it */ |
|
else break; /* or we're done */ |
|
urllen++; /* length of url string */ |
|
/* --- now, replace interior ctrlchars with ~ blanks --- */ |
|
while ( (seglen=strcspn(url,ctrlchars)) < urllen ) /*found a ctrlchar*/ |
|
url[seglen] = '~'; /* replace ctrlchar with ~ */ |
|
} /* --- end-of-if(1) --- */ |
|
/* --- |
|
* xlate +'s to blanks if requested or if deemed necessary |
|
* ------------------------------------------------------- */ |
|
if ( isplusblank == (-1) ) { /*determine whether or not to xlate*/ |
|
char *searchfor[] = { " ","%20", "%2B","%2b", "+++","++", |
|
"+=+","+-+", NULL }; |
|
int isearch = 0, /* searchfor[] index */ |
|
nfound[11] = {-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1}; /*#occurrences*/ |
|
/* --- locate occurrences of searchfor[] strings in url --- */ |
|
for ( isearch=0; searchfor[isearch] != NULL; isearch++ ) { |
|
char *psearch = url; /* start search at beginning */ |
|
nfound[isearch] = 0; /* init #occurrences count */ |
|
while ( (psearch=strstr(psearch,searchfor[isearch])) != NULL ) { |
|
nfound[isearch] += 1; /* count another occurrence */ |
|
psearch += strlen(searchfor[isearch]); } /*resume search after it*/ |
|
} /* --- end-of-for(isearch) --- */ |
|
/* --- apply some common-sense logic --- */ |
|
if ( nfound[0] + nfound[1] > 0 ) /* we have actual " "s or "%20"s */ |
|
isplusblank = xlateplus = 0; /* so +++'s aren't blanks */ |
|
if ( nfound[2] + nfound[3] > 0 ) { /* we have "%2B" for +++'s */ |
|
if ( isplusblank != 0 ) /* and haven't disabled xlation */ |
|
isplusblank = xlateplus = 1; /* so +++'s are blanks */ |
|
else /* we have _both_ "%20" and "%2b" */ |
|
xlateplus = 0; } /* tough call */ |
|
if ( nfound[4] + nfound[5] > 0 /* we have multiple ++'s */ |
|
|| nfound[6] + nfound[7] > 0 ) /* or we have a +=+ or +-+ */ |
|
if ( isplusblank != 0 ) /* and haven't disabled xlation */ |
|
xlateplus = 1; /* so xlate +++'s to blanks */ |
|
} /* --- end-of-if(isplusblank==-1) --- */ |
|
if ( xlateplus > 0 ) { /* want +'s xlated to blanks */ |
|
char *xlateto[] = { ""," "," "," + "," "," "," "," "," " }; |
|
while ( xlateplus > 0 ) { /* still have +++'s to xlate */ |
|
char plusses[99] = "++++++++++++++++++++"; /* longest +++ string */ |
|
plusses[xlateplus] = '\000'; /* null-terminate +++'s */ |
|
strreplace(url,plusses,xlateto[xlateplus],0); /* xlate +++'s */ |
|
xlateplus--; /* next shorter +++ string */ |
|
} /* --- end-of-while(xlateplus>0) --- */ |
|
} /* --- end-of-if(xlateplus) --- */ |
|
isplusblank = 0; /* don't iterate this xlation */ |
|
/* --- |
|
* xlate %nn to corresponding char |
|
* ------------------------------- */ |
for(;url[y];++x,++y) { |
for(;url[y];++x,++y) { |
gotescape = prevescape; |
gotescape = prevescape; |
prevescape = (url[x]=='\\'); |
prevescape = (url[x]=='\\'); |
Line 10669 char *value = NULL; /* getenv(name) to
|
Line 14555 char *value = NULL; /* getenv(name) to
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Log each variable |
Log each variable |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
fprintf(fp,"%s\n",timestamp()); /* emit timestamp before first var */ |
fprintf(fp,"%s\n",timestamp(TZDELTA,0)); /*emit timestamp before first var*/ |
if ( message != NULL ) /* optional message supplied */ |
if ( message != NULL ) /* optional message supplied */ |
fprintf(fp," MESSAGE = %s\n",message); /* emit caller-supplied message */ |
fprintf(fp," MESSAGE = %s\n",message); /* emit caller-supplied message */ |
if ( logvars != (logdata *)NULL ) /* have logvars */ |
if ( logvars != (logdata *)NULL ) /* have logvars */ |
Line 10686 return ( nlogged ); /* back to caller
|
Line 14572 return ( nlogged ); /* back to caller
|
} /* --- end-of-function logger() --- */ |
} /* --- end-of-function logger() --- */ |
|
|
/* ========================================================================== |
/* ========================================================================== |
* Function: emitcache ( cachefile ) |
* Function: emitcache ( cachefile, maxage, isbuffer ) |
* Purpose: dumps bytes from cachefile to stdout |
* Purpose: dumps bytes from cachefile to stdout |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Arguments: cachefile (I) pointer to null-terminated char string |
* Arguments: cachefile (I) pointer to null-terminated char string |
* containing full path to file to be dumped |
* containing full path to file to be dumped, |
|
* or contains buffer of bytes to be dumped |
|
* maxage (I) int containing maxage. in seconds, for |
|
* http header, or -1 to not emit headers |
|
* isbuffer (I) 1 if cachefile is buffer of bytes to be |
|
* dumped |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Returns: ( int ) #bytes dumped (0 signals error) |
* Returns: ( int ) #bytes dumped (0 signals error) |
* -------------------------------------------------------------------------- |
* -------------------------------------------------------------------------- |
* Notes: o |
* Notes: o |
* ======================================================================= */ |
* ======================================================================= */ |
/* --- entry point --- */ |
/* --- entry point --- */ |
int emitcache ( char *cachefile ) |
int emitcache ( char *cachefile, int maxage, int isbuffer ) |
{ |
{ |
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
Allocations and Declarations |
Allocations and Declarations |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
FILE *cacheptr = fopen(cachefile,"rb"), /*open cachefile for binary read*/ |
int nbytes=gifSize, readcachefile(); /* read cache file */ |
*emitptr = stdout; /* emit cachefile to stdout */ |
FILE *emitptr = stdout; /* emit cachefile to stdout */ |
unsigned char buffer[64]; /* characters from cachefile */ |
unsigned char buffer[MAXGIFSZ+1]; /* bytes from cachefile */ |
int buflen = 32, /* #bytes we try to read from cache*/ |
unsigned char *buffptr = buffer; /* ptr to buffer */ |
nread = 0, /* #bytes actually read */ |
|
nbytes = 0; /* total #bytes emitted */ |
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
initialization |
initialization |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
/* --- check that files opened okay --- */ |
/* --- check that files opened okay --- */ |
if ( cacheptr == (FILE *)NULL /* failed to open cachefile */ |
if ( emitptr == (FILE *)NULL ) /* failed to open emit file */ |
|| emitptr == (FILE *)NULL ) /* or failed to open emit file */ |
|
goto end_of_job; /* so return 0 bytes to caller */ |
goto end_of_job; /* so return 0 bytes to caller */ |
/* --- set stdout to binary mode (for Windows) --- */ |
/* --- read the file if necessary --- */ |
|
if ( isbuffer ) /* cachefile is buffer */ |
|
buffptr = (unsigned char *)cachefile; /* so reset buffer pointer */ |
|
else /* cachefile is file name */ |
|
if ( (nbytes = readcachefile(cachefile,buffer)) /* read the file */ |
|
< 1 ) goto end_of_job; /* quit if file not read */ |
|
/* --- first emit http headers if requested --- */ |
|
if ( isemitcontenttype /* content-type lines enabled */ |
|
&& maxage >= 0 ) /* caller wants http headers */ |
|
{ /* --- emit mime content-type line --- */ |
|
fprintf( emitptr, "Cache-Control: max-age=%d\n",maxage ); |
|
fprintf( emitptr, "Content-Length: %d\n",nbytes ); |
|
fprintf( emitptr, "Content-type: image/gif\n\n" ); } |
|
/* ------------------------------------------------------------------------- |
|
set stdout to binary mode (for Windows) |
|
-------------------------------------------------------------------------- */ |
/* emitptr = fdopen(STDOUT_FILENO,"wb"); */ /* doesn't work portably, */ |
/* emitptr = fdopen(STDOUT_FILENO,"wb"); */ /* doesn't work portably, */ |
#ifdef WINDOWS /* so instead... */ |
#ifdef WINDOWS /* so instead... */ |
#ifdef HAVE_SETMODE /* prefer (non-portable) setmode() */ |
#ifdef HAVE_SETMODE /* prefer (non-portable) setmode() */ |
Line 10732 if ( cacheptr == (FILE *)NULL /* failed
|
Line 14635 if ( cacheptr == (FILE *)NULL /* failed
|
/* ------------------------------------------------------------------------- |
/* ------------------------------------------------------------------------- |
emit bytes from cachefile |
emit bytes from cachefile |
-------------------------------------------------------------------------- */ |
-------------------------------------------------------------------------- */ |
|
/* --- write bytes to stdout --- */ |
|
if ( fwrite(buffptr,sizeof(unsigned char),nbytes,emitptr) /* write buffer */ |
|
< nbytes ) /* failed to write all bytes */ |
|
nbytes = 0; /* reset total count to 0 */ |
|
end_of_job: |
|
return ( nbytes ); /* back with #bytes emitted */ |
|
} /* --- end-of-function emitcache() --- */ |
|
|
|
/* ========================================================================== |
|
* Function: readcachefile ( cachefile, buffer ) |
|
* Purpose: read cachefile into buffer |
|
* -------------------------------------------------------------------------- |
|
* Arguments: cachefile (I) pointer to null-terminated char string |
|
* containing full path to file to be read |
|
* buffer (O) pointer to unsigned char string |
|
* returning contents of cachefile |
|
* (max 64000 bytes) |
|
* -------------------------------------------------------------------------- |
|
* Returns: ( int ) #bytes read (0 signals error) |
|
* -------------------------------------------------------------------------- |
|
* Notes: o |
|
* ======================================================================= */ |
|
/* --- entry point --- */ |
|
int readcachefile ( char *cachefile, unsigned char *buffer ) |
|
{ |
|
/* ------------------------------------------------------------------------- |
|
Allocations and Declarations |
|
-------------------------------------------------------------------------- */ |
|
FILE *cacheptr = fopen(cachefile,"rb"); /*open cachefile for binary read*/ |
|
unsigned char cachebuff[64]; /* bytes from cachefile */ |
|
int buflen = 32, /* #bytes we try to read from file */ |
|
nread = 0, /* #bytes actually read from file */ |
|
maxbytes = MAXGIFSZ, /* max #bytes returned in buffer */ |
|
nbytes = 0; /* total #bytes read */ |
|
/* ------------------------------------------------------------------------- |
|
initialization |
|
-------------------------------------------------------------------------- */ |
|
/* --- check that files opened okay --- */ |
|
if ( cacheptr == (FILE *)NULL ) goto end_of_job; /*failed to open cachefile*/ |
|
/* --- check that output buffer provided --- */ |
|
if ( buffer == (unsigned char *)NULL ) goto end_of_job; /* no buffer */ |
|
/* ------------------------------------------------------------------------- |
|
read bytes from cachefile |
|
-------------------------------------------------------------------------- */ |
while ( 1 ) |
while ( 1 ) |
{ |
{ |
/* --- read bytes from cachefile --- */ |
/* --- read bytes from cachefile --- */ |
nread = fread(buffer,sizeof(unsigned char),buflen,cacheptr); /* read */ |
nread = fread(cachebuff,sizeof(unsigned char),buflen,cacheptr); /* read */ |
|
if ( nbytes + nread > maxbytes ) /* block too big for buffer */ |
|
nread = maxbytes - nbytes; /* so truncate it */ |
if ( nread < 1 ) break; /* no bytes left in cachefile */ |
if ( nread < 1 ) break; /* no bytes left in cachefile */ |
/* --- write bytes to stdout --- */ |
/* --- store bytes in buffer --- */ |
if ( fwrite(buffer,sizeof(unsigned char),nread,emitptr) /* write buffer */ |
memcpy(buffer+nbytes,cachebuff,nread); /* copy current block to buffer */ |
< nread) /* failed to write all bytes */ |
/* --- ready to read next block --- */ |
{ nbytes = 0; /* reset total count to 0 */ |
|
goto end_of_job; } /* and signal error to caller */ |
|
nbytes += nread; /* bump total #bytes emitted */ |
nbytes += nread; /* bump total #bytes emitted */ |
if ( nread < buflen ) break; /* no bytes left in cachefile */ |
if ( nread < buflen ) break; /* no bytes left in cachefile */ |
|
if ( nbytes >= maxbytes ) break; /* avoid buffer overflow */ |
} /* --- end-of-while(1) --- */ |
} /* --- end-of-while(1) --- */ |
end_of_job: |
end_of_job: |
if ( cacheptr != NULL ) fclose(cacheptr); /* close file if opened */ |
if ( cacheptr != NULL ) fclose(cacheptr); /* close file if opened */ |
return ( nbytes ); /* back with #bytes emitted */ |
return ( nbytes ); /* back with #bytes emitted */ |
} /* --- end-of-function emitcache() --- */ |
} /* --- end-of-function readcachefile() --- */ |
|
|
/* ========================================================================== |
/* ========================================================================== |
* Function: md5str ( instr ) |
* Function: md5str ( instr ) |