File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.241: download - view: text, annotated - select for diffs
Mon Sep 29 13:42:02 2003 UTC (21 years, 1 month ago) by www
Branches: MAIN
CVS tags: HEAD
Bug #2247: incorrect headers fixed.

    1: # The LearningOnline Network
    2: # Printout
    3: #
    4: # $Id: lonprintout.pm,v 1.241 2003/09/29 13:42:02 www Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: # (Internal Server Error Handler
   29: #
   30: # (Login Screen
   31: # 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
   32: # 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)
   33: #
   34: # 3/1/1 Gerd Kortemeyer)
   35: #
   36: # 3/1 Gerd Kortemeyer
   37: #
   38: # 9/17 Alex Sakharuk
   39: #
   40: package Apache::lonprintout;
   41: 
   42: use strict;
   43: use Apache::Constants qw(:common :http);
   44: use Apache::lonxml;
   45: use Apache::lonnet;
   46: use Apache::loncommon;
   47: use Apache::inputtags;
   48: use Apache::grades;
   49: use Apache::edit;
   50: use Apache::File();
   51: use Apache::lonnavmaps;
   52: use Apache::lonratedt;
   53: use POSIX qw(strftime);
   54: use GDBM_File;
   55: 
   56: 
   57: my %hash;
   58: my $LaTeXwidth = 0;
   59: 
   60: 
   61: sub latex_header_footer_remove {
   62:     my $text = shift;
   63:     $text =~ s/\\end{document}//;
   64:     $text =~ s/\\documentclass([^&]*)\\begin{document}//;
   65:     return $text;
   66: }
   67: 
   68: 
   69: sub character_chart {
   70:     my $result = shift;	
   71:     $result =~ s/&\#0?0?(7|9);//g;
   72:     $result =~ s/&\#0?(10|13);//g;
   73:     $result =~ s/&\#0?32;/ /g;
   74:     $result =~ s/&\#0?33;/!/g;
   75:     $result =~ s/&(\#0?34|quot);/\"/g;
   76:     $result =~ s/&\#0?35;/\\\#/g;
   77:     $result =~ s/&\#0?36;/\\\$/g;
   78:     $result =~ s/&\#0?37;/\\%/g; 
   79:     $result =~ s/&(\#0?38|amp);/\\&/g; 
   80:     $result =~ s/&\#(0?39|146);/\'/g;
   81:     $result =~ s/&\#0?40;/(/g;
   82:     $result =~ s/&\#0?41;/)/g;
   83:     $result =~ s/&\#0?42;/\*/g;
   84:     $result =~ s/&\#0?43;/\+/g;
   85:     $result =~ s/&\#(0?44|130);/,/g;
   86:     $result =~ s/&\#0?45;/-/g;
   87:     $result =~ s/&\#0?46;/\./g;
   88:     $result =~ s/&\#0?47;/\//g;
   89:     $result =~ s/&\#0?48;/0/g;
   90:     $result =~ s/&\#0?49;/1/g;
   91:     $result =~ s/&\#0?50;/2/g;
   92:     $result =~ s/&\#0?51;/3/g;
   93:     $result =~ s/&\#0?52;/4/g;
   94:     $result =~ s/&\#0?53;/5/g;
   95:     $result =~ s/&\#0?54;/6/g;
   96:     $result =~ s/&\#0?55;/7/g;
   97:     $result =~ s/&\#0?56;/8/g;
   98:     $result =~ s/&\#0?57;/9/g;
   99:     $result =~ s/&\#0?58;/:/g;
  100:     $result =~ s/&\#0?59;/;/g;
  101:     $result =~ s/&(\#0?60|lt|\#139);/\$<\$/g;
  102:     $result =~ s/&\#0?61;/\$=\$/g;
  103:     $result =~ s/&(\#0?62|gt|\#155);/\$>\$/g;
  104:     $result =~ s/&\#0?63;/\?/g;
  105:     $result =~ s/&\#0?65;/A/g;
  106:     $result =~ s/&\#0?66;/B/g;
  107:     $result =~ s/&\#0?67;/C/g;
  108:     $result =~ s/&\#0?68;/D/g;
  109:     $result =~ s/&\#0?69;/E/g;
  110:     $result =~ s/&\#0?70;/F/g;
  111:     $result =~ s/&\#0?71;/G/g;
  112:     $result =~ s/&\#0?72;/H/g;
  113:     $result =~ s/&\#0?73;/I/g;
  114:     $result =~ s/&\#0?74;/J/g;
  115:     $result =~ s/&\#0?75;/K/g;
  116:     $result =~ s/&\#0?76;/L/g;
  117:     $result =~ s/&\#0?77;/M/g;
  118:     $result =~ s/&\#0?78;/N/g;
  119:     $result =~ s/&\#0?79;/O/g;
  120:     $result =~ s/&\#0?80;/P/g;
  121:     $result =~ s/&\#0?81;/Q/g;
  122:     $result =~ s/&\#0?82;/R/g;
  123:     $result =~ s/&\#0?83;/S/g;
  124:     $result =~ s/&\#0?84;/T/g;
  125:     $result =~ s/&\#0?85;/U/g;
  126:     $result =~ s/&\#0?86;/V/g;
  127:     $result =~ s/&\#0?87;/W/g;
  128:     $result =~ s/&\#0?88;/X/g;
  129:     $result =~ s/&\#0?89;/Y/g;
  130:     $result =~ s/&\#0?90;/Z/g;
  131:     $result =~ s/&\#0?91;/[/g;
  132:     $result =~ s/&\#0?92;/\$\\setminus\$/g;
  133:     $result =~ s/&\#0?93;/]/g;
  134:     $result =~ s/&\#(0?94|136);/\$\\wedge\$/g;
  135:     $result =~ s/&\#(0?95|138|154);/\\underline{\\makebox[2mm]{\\strut}}/g;
  136:     $result =~ s/&\#(0?96|145);/\`/g;
  137:     $result =~ s/&\#0?97;/a/g;
  138:     $result =~ s/&\#0?98;/b/g;
  139:     $result =~ s/&\#0?99;/c/g;
  140:     $result =~ s/&\#100;/d/g;
  141:     $result =~ s/&\#101;/e/g;
  142:     $result =~ s/&\#102;/f/g;
  143:     $result =~ s/&\#103;/g/g;
  144:     $result =~ s/&\#104;/h/g;
  145:     $result =~ s/&\#105;/i/g;
  146:     $result =~ s/&\#106;/j/g;
  147:     $result =~ s/&\#107;/k/g;
  148:     $result =~ s/&\#108;/l/g;
  149:     $result =~ s/&\#109;/m/g;
  150:     $result =~ s/&\#110;/n/g;
  151:     $result =~ s/&\#111;/o/g;
  152:     $result =~ s/&\#112;/p/g;
  153:     $result =~ s/&\#113;/q/g;
  154:     $result =~ s/&\#114;/r/g;
  155:     $result =~ s/&\#115;/s/g;
  156:     $result =~ s/&\#116;/t/g;
  157:     $result =~ s/&\#117;/u/g;
  158:     $result =~ s/&\#118;/v/g;
  159:     $result =~ s/&\#119;/w/g;
  160:     $result =~ s/&\#120;/x/g;
  161:     $result =~ s/&\#121;/y/g;
  162:     $result =~ s/&\#122;/z/g;
  163:     $result =~ s/&\#123;/\\{/g;
  164:     $result =~ s/&\#124;/\|/g;
  165:     $result =~ s/&\#125;/\\}/g;
  166:     $result =~ s/&\#126;/\~/g;
  167:     $result =~ s/&\#131;/\\textflorin /g;
  168:     $result =~ s/&\#132;/\"/g;
  169:     $result =~ s/&\#133;/\$\\ldots\$/g;
  170:     $result =~ s/&\#134;/\$\\dagger\$/g;
  171:     $result =~ s/&\#135;/\$\\ddagger\$/g;
  172:     $result =~ s/&\#137;/\\textperthousand /g;
  173:     $result =~ s/&\#140;/{\\OE}/g;
  174:     $result =~ s/&\#147;/\`\`/g;
  175:     $result =~ s/&\#148;/\'\'/g;
  176:     $result =~ s/&\#149;/\$\\bullet\$/g;
  177:     $result =~ s/&\#150;/--/g;
  178:     $result =~ s/&\#151;/---/g;
  179:     $result =~ s/&\#152;/\$\\sim\$/g;
  180:     $result =~ s/&\#153;/\\texttrademark /g;
  181:     $result =~ s/&\#156;/\\oe/g;
  182:     $result =~ s/&\#159;/\\\"Y/g;
  183:     $result =~ s/&(\#160|nbsp);//g;
  184:     $result =~ s/&(\#161|iexcl);/!\`/g;
  185:     $result =~ s/&(\#162|cent);/\\textcent /g;
  186:     $result =~ s/&(\#163|pound);/\\pounds /g; 
  187:     $result =~ s/&(\#164|curren);/\\textcurrency /g;
  188:     $result =~ s/&(\#165|yen);/\\textyen /g;
  189:     $result =~ s/&(\#166|brvbar);/\\textbrokenbar /g;
  190:     $result =~ s/&(\#167|sect);/\\textsection /g;
  191:     $result =~ s/&(\#168|uml);/\\texthighdieresis /g;
  192:     $result =~ s/&(\#169|copy);/\\copyright /g;
  193:     $result =~ s/&(\#170|ordf);/\\textordfeminine /g;
  194:     $result =~ s/&(\#172|not);/\$\\neg\$/g;
  195:     $result =~ s/&(\#173|shy);/ - /g;
  196:     $result =~ s/&(\#174|reg);/\\textregistered /g;
  197:     $result =~ s/&(\#175|macr);/\$^{-}\$/g;
  198:     $result =~ s/&(\#176|deg);/\$^{\\circ}\$/g;
  199:     $result =~ s/&(\#177|plusmn);/\$\\pm\$/g;
  200:     $result =~ s/&(\#178|sup2);/\$^2\$/g;
  201:     $result =~ s/&(\#179|sup3);/\$^3\$/g;
  202:     $result =~ s/&(\#180|acute);/\\textacute /g;
  203:     $result =~ s/&(\#181|micro);/\$\\mu\$/g;
  204:     $result =~ s/&(\#182|para);/\\P/g;
  205:     $result =~ s/&(\#183|middot);/\$\\cdot\$/g;
  206:     $result =~ s/&(\#184|cedil);/\\c{\\strut}/g;
  207:     $result =~ s/&(\#185|sup1);/\$^1\$/g;
  208:     $result =~ s/&(\#186|ordm);/\\textordmasculine /g;
  209:     $result =~ s/&(\#188|frac14);/\\textonequarter /g;
  210:     $result =~ s/&(\#189|frac12);/\\textonehalf /g;
  211:     $result =~ s/&(\#190|frac34);/\\textthreequarters /g;
  212:     $result =~ s/&(\#191|iquest);/?\`/g;   
  213:     $result =~ s/&(\#192|Agrave);/\\\`{A}/g;  
  214:     $result =~ s/&(\#193|Aacute);/\\\'{A}/g; 
  215:     $result =~ s/&(\#194|Acirc);/\\^{A}/g;
  216:     $result =~ s/&(\#195|Atilde);/\\~{A}/g;
  217:     $result =~ s/&(\#196|Auml);/\\\"{A}/g; 
  218:     $result =~ s/&(\#197|Aring);/{\\AA}/g;
  219:     $result =~ s/&(\#198|AElig);/{\\AE}/g;
  220:     $result =~ s/&(\#199|Ccedil);/\\c{c}/g;
  221:     $result =~ s/&(\#200|Egrave);/\\\`{E}/g;  
  222:     $result =~ s/&(\#201|Eacute);/\\\'{E}/g;    
  223:     $result =~ s/&(\#202|Ecirc);/\\^{E}/g;
  224:     $result =~ s/&(\#203|Euml);/\\\"{E}/g;
  225:     $result =~ s/&(\#204|Igrave);/\\\`{I}/g;
  226:     $result =~ s/&(\#205|Iacute);/\\\'{I}/g;    
  227:     $result =~ s/&(\#206|Icirc);/\\^{I}/g;
  228:     $result =~ s/&(\#207|Iuml);/\\\"{I}/g;    
  229:     $result =~ s/&(\#209|Ntilde);/\\~{N}/g;
  230:     $result =~ s/&(\#210|Ograve);/\\\`{O}/g;
  231:     $result =~ s/&(\#211|Oacute);/\\\'{O}/g;
  232:     $result =~ s/&(\#212|Ocirc);/\\^{O}/g;
  233:     $result =~ s/&(\#213|Otilde);/\\~{O}/g;
  234:     $result =~ s/&(\#214|Ouml);/\\\"{O}/g;    
  235:     $result =~ s/&(\#215|times);/\$\\times\$/g;
  236:     $result =~ s/&(\#216|Oslash);/{\\O}/g;
  237:     $result =~ s/&(\#217|Ugrave);/\\\`{U}/g;    
  238:     $result =~ s/&(\#218|Uacute);/\\\'{U}/g;
  239:     $result =~ s/&(\#219|Ucirc);/\\^{U}/g;
  240:     $result =~ s/&(\#220|Uuml);/\\\"{U}/g;
  241:     $result =~ s/&(\#221|Yacute);/\\\'{Y}/g;
  242:     $result =~ s/&(\#223|szlig);/\\ss/g;
  243:     $result =~ s/&(\#224|agrave);/\\\`{a}/g;
  244:     $result =~ s/&(\#225|aacute);/\\\'{a}/g;
  245:     $result =~ s/&(\#226|acirc);/\\^{a}/g;
  246:     $result =~ s/&(\#227|atilde);/\\~{a}/g;
  247:     $result =~ s/&(\#228|auml);/\\\"{a}/g;
  248:     $result =~ s/&(\#229|aring);/{\\aa}/g;
  249:     $result =~ s/&(\#230|aelig);/{\\ae}/g;
  250:     $result =~ s/&(\#231|ccedil);/\\c{c}/g;
  251:     $result =~ s/&(\#232|egrave);/\\\`{e}/g;
  252:     $result =~ s/&(\#233|eacute);/\\\'{e}/g;
  253:     $result =~ s/&(\#234|ecirc);/\\^{e}/g;
  254:     $result =~ s/&(\#235|euml);/\\\"{e}/g;
  255:     $result =~ s/&(\#236|igrave);/\\\`{i}/g;
  256:     $result =~ s/&(\#237|iacute);/\\\'{i}/g;
  257:     $result =~ s/&(\#238|icirc);/\\^{i}/g;
  258:     $result =~ s/&(\#239|iuml);/\\\"{i}/g;
  259:     $result =~ s/&(\#240|eth);/\$\\partial\$/g;
  260:     $result =~ s/&(\#241|ntilde);/\\~{n}/g;
  261:     $result =~ s/&(\#242|ograve);/\\\`{o}/g;
  262:     $result =~ s/&(\#243|oacute);/\\\'{o}/g;
  263:     $result =~ s/&(\#244|ocirc);/\\^{o}/g;
  264:     $result =~ s/&(\#245|otilde);/\\~{o}/g;
  265:     $result =~ s/&(\#246|ouml);/\\\"{o}/g;
  266:     $result =~ s/&(\#247|divide);/\$\\div\$/g;
  267:     $result =~ s/&(\#248|oslash);/{\\o}/g;
  268:     $result =~ s/&(\#249|ugrave);/\\\`{u}/g; 
  269:     $result =~ s/&(\#250|uacute);/\\\'{u}/g;
  270:     $result =~ s/&(\#251|ucirc);/\\^{u}/g;
  271:     $result =~ s/&(\#252|uuml);/\\\"{u}/g;
  272:     $result =~ s/&(\#253|yacute);/\\\'{y}/g;
  273:     $result =~ s/&(\#255|yuml);/\\\"{y}/g;
  274:     $result =~ s/&\#952;/\$\\theta\$/g;
  275: #Greek Alphabet
  276:     $result =~ s/&(alpha|\#945);/\$\\alpha \$/g;
  277:     $result =~ s/&(beta|\#946);/\$\\beta \$/g;
  278:     $result =~ s/&(gamma|\#947);/\$\\gamma \$/g;
  279:     $result =~ s/&(delta|\#948);/\$\\delta \$/g;
  280:     $result =~ s/&(epsilon|\#949);/\$\\epsilon \$/g;
  281:     $result =~ s/&(zeta|\#950);/\$\\zeta \$/g;
  282:     $result =~ s/&(eta|\#951);/\$\\eta \$/g;
  283:     $result =~ s/&(theta|\#952);/\$\\theta \$/g;
  284:     $result =~ s/&(iota|\#953);/\$\\iota \$/g;
  285:     $result =~ s/&(kappa|\#954);/\$\\kappa \$/g;
  286:     $result =~ s/&(lambda|\#955);/\$\\lambda \$/g;
  287:     $result =~ s/&(mu|\#956);/\$\\mu \$/g;
  288:     $result =~ s/&(nu|\#957);/\$\\nu \$/g;
  289:     $result =~ s/&(xi|\#958);/\$\\xi \$/g;
  290:     $result =~ s/&(omicron|\#959);/o/g;
  291:     $result =~ s/&(pi|\#960);/\$\\pi \$/g;
  292:     $result =~ s/&(rho|\#961);/\$\\rho \$/g;
  293:     $result =~ s/&(sigma|\#963);/\$\\sigma \$/g;
  294:     $result =~ s/&(tau|\#964);/\$\\tau \$/g;
  295:     $result =~ s/&(upsilon|\#965);/\$\\upsilon \$/g;
  296:     $result =~ s/&(phi|\#966);/\$\\phi \$/g;
  297:     $result =~ s/&(chi|\#967);/\$\\chi \$/g;
  298:     $result =~ s/&(psi|\#968);/\$\\psi \$/g;
  299:     $result =~ s/&(omega|\#969);/\$\\omega \$/g;
  300:     $result =~ s/&(thetasym|\#977);/\$\\vartheta \$/g;
  301:     $result =~ s/&(piv|\#982);/\$\\varpi \$/g;
  302:     $result =~ s/&(Alpha|\#913);/A/g;
  303:     $result =~ s/&(Beta|\#914);/B/g;
  304:     $result =~ s/&(Gamma|\#915);/\$\\Gamma \$/g;
  305:     $result =~ s/&(Delta|\#916);/\$\\Delta \$/g;
  306:     $result =~ s/&(Epsilon|\#917);/E/g;
  307:     $result =~ s/&(Zeta|\#918);/Z/g;
  308:     $result =~ s/&(Eta|\#919);/H/g;
  309:     $result =~ s/&(Theta|\#920);/\$\\Theta \$/g;
  310:     $result =~ s/&(Iota|\#921);/I/g;
  311:     $result =~ s/&(Kappa|\#922);/K/g;
  312:     $result =~ s/&(Lambda|\#923);/\$\\Lambda \$/g;
  313:     $result =~ s/&(Mu|\#924);/M/g;
  314:     $result =~ s/&(Nu|\#925);/N/g;
  315:     $result =~ s/&(Xi|\#926);/\$\\Xi \$/g;
  316:     $result =~ s/&(Omicron|\#927);/O/g;
  317:     $result =~ s/&(Pi|\#928);/\$\\Pi \$/g;
  318:     $result =~ s/&(Rho|\#929);/P/g;
  319:     $result =~ s/&(Sigma|\#931);/\$\\Sigma \$/g;
  320:     $result =~ s/&(Tau|\#932);/T/g;
  321:     $result =~ s/&(Upsilon|\#933);/\$\\Upsilon \$/g;
  322:     $result =~ s/&(Phi|\#934);/\$\\Phi \$/g;
  323:     $result =~ s/&(Chi|\#935);/X/g;
  324:     $result =~ s/&(Psi|\#936);/\$\\Psi \$/g;
  325:     $result =~ s/&(Omega|\#937);/\$\\Omega \$/g;
  326: #Arrows (extended HTML 4.01)
  327:     $result =~ s/&(larr|\#8592);/\$\\leftarrow \$/g;
  328:     $result =~ s/&(uarr|\#8593);/\$\\uparrow \$/g;
  329:     $result =~ s/&(rarr|\#8594);/\$\\rightarrow \$/g;
  330:     $result =~ s/&(darr|\#8595);/\$\\downarrow \$/g;
  331:     $result =~ s/&(harr|\#8596);/\$\\leftrightarrow \$/g;
  332:     $result =~ s/&(lArr|\#8656);/\$\\Leftarrow \$/g;
  333:     $result =~ s/&(uArr|\#8657);/\$\\Uparrow \$/g;
  334:     $result =~ s/&(rArr|\#8658);/\$\\Rightarrow \$/g;
  335:     $result =~ s/&(dArr|\#8659);/\$\\Downarrow \$/g;
  336:     $result =~ s/&(hArr|\#8660);/\$\\Leftrightarrow \$/g;
  337: #Mathematical Operators (extended HTML 4.01)
  338:     $result =~ s/&(forall|\#8704);/\$\\forall \$/g;
  339:     $result =~ s/&(part|\#8706);/\$\\partial \$/g;
  340:     $result =~ s/&(exist|\#8707);/\$\\exists \$/g;
  341:     $result =~ s/&(empty|\#8709);/\$\\emptyset \$/g;
  342:     $result =~ s/&(nabla|\#8711);/\$\\nabla \$/g;
  343:     $result =~ s/&(isin|\#8712);/\$\\in \$/g;
  344:     $result =~ s/&(notin|\#8713);/\$\\notin \$/g;
  345:     $result =~ s/&(ni|\#8715);/\$\\ni \$/g;
  346:     $result =~ s/&(prod|\#8719);/\$\\prod \$/g;
  347:     $result =~ s/&(sum|\#8721);/\$\\sum \$/g;
  348:     $result =~ s/&(minus|\#8722);/\$-\$/g;
  349:     $result =~ s/&(lowast|\#8727);/\$*\$/g;
  350:     $result =~ s/&(radic|\#8730);/\$\\surd \$/g;
  351:     $result =~ s/&(prop|\#8733);/\$\\propto \$/g;
  352:     $result =~ s/&(infin|\#8734);/\$\\infty \$/g;
  353:     $result =~ s/&(ang|\#8736);/\$\\angle \$/g;
  354:     $result =~ s/&(and|\#8743);/\$\\wedge \$/g;
  355:     $result =~ s/&(or|\#8744);/\$\\vee \$/g;
  356:     $result =~ s/&(cap|\#8745);/\$\\cap \$/g;
  357:     $result =~ s/&(cup|\#8746);/\$\\cup \$/g;
  358:     $result =~ s/&(int|\#8747);/\$\\int \$/g;
  359:     $result =~ s/&(sim|\#8764);/\$\\sim \$/g;
  360:     $result =~ s/&(cong|\#8773);/\$\\cong \$/g;
  361:     $result =~ s/&(asymp|\#8776);/\$\\approx \$/g;
  362:     $result =~ s/&(ne|\#8800);/\$\\not= \$/g;
  363:     $result =~ s/&(equiv|\#8801);/\$\\equiv \$/g;
  364:     $result =~ s/&(le|\#8804);/\$\\leq \$/g;
  365:     $result =~ s/&(ge|\#8805);/\$\\geq \$/g;
  366:     $result =~ s/&(sub|\#8834);/\$\\subset \$/g;
  367:     $result =~ s/&(sup|\#8835);/\$\\supset \$/g;
  368:     $result =~ s/&(nsub|\#8836);/\$\\not\\subset \$/g;
  369:     $result =~ s/&(sube|\#8838);/\$\\subseteq \$/g;
  370:     $result =~ s/&(supe|\#8839);/\$\\supseteq \$/g;
  371:     $result =~ s/&(oplus|\#8853);/\$\\oplus \$/g;
  372:     $result =~ s/&(otimes|\#8855);/\$\\otimes \$/g;
  373:     $result =~ s/&(perp|\#8869);/\$\\perp \$/g;
  374:     $result =~ s/&(sdot|\#8901);/\$\\cdot \$/g;
  375: #Geometric Shapes (extended HTML 4.01)
  376:     $result =~ s/&(loz|\#9674);/\$\\Diamond \$/g;
  377: #Miscellaneous Symbols (extended HTML 4.01)
  378:     $result =~ s/&(spades|\#9824);/\$\\spadesuit \$/g;
  379:     $result =~ s/&(clubs|\#9827);/\$\\clubsuit \$/g;
  380:     $result =~ s/&(hearts|\#9829);/\$\\heartsuit \$/g;
  381:     $result =~ s/&(diams|\#9830);/\$\\diamondsuit \$/g;
  382:     return $result;
  383: }
  384: 
  385: 
  386: sub page_format {
  387: #
  388: #Correspondence between $papersize variable and real paper format:
  389: # 0 - "Letter [8 1/2x11 in]"
  390: # 1 - "Legal [8 1/2x14 in]"
  391: # 2 - "Ledger/Tabloid [11x17 in]"
  392: # 3 - "Executive [7 1/2x10 in]"
  393: # 4 - "A2 [420x594 mm]"
  394: # 5 - "A3 [297x420 mm]"
  395: # 6 - "A4 [210x297 mm]"
  396: # 7 - "A5 [148x210 mm]"
  397: # 8 - "A6 [105x148 mm]"
  398: # 
  399:     my ($papersize,$layout,$numberofcolumns) = @_; 
  400:     my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = (0,0,0,0,0);
  401:     if ($papersize eq '0') {
  402: 	if ($layout eq 'book') {
  403: 	    if ($numberofcolumns == 1) {
  404: 		$textwidth = '7.1 in';      #'18 cm';
  405: 		$textheight = '10.2 in';    #'25.9 cm';
  406: 		$oddoffset = '-0.57 in';
  407: 		$evenoffset = '-0.57 in';
  408: 	    } elsif ($numberofcolumns == 2) {
  409: 		$textwidth = '3.66 in';     #'93 mm';
  410: 		$textheight = '10.2 in';    #'25.9 cm';
  411: 		$oddoffset = '-0.57 in';
  412: 		$evenoffset = '-0.57 in';
  413: 	    }
  414: 	} elsif ($layout eq 'album') {
  415: 	    if ($numberofcolumns eq '1') {
  416: 		$textwidth = '8.8 in';
  417: 		$textheight = '6.8 in';
  418: 		$oddoffset = '-40 pt';
  419: 		$evenoffset = '-60 pt';
  420: 	    } elsif ($numberofcolumns == 2) {
  421: 		$textwidth = '4.4 in';
  422: 		$textheight = '6.8 in';
  423: 		$oddoffset = '-0.5 in';
  424: 		$evenoffset = '-1.5 in';
  425: 		$topmargin = '3.5 in';
  426: 	    }
  427: 	}
  428: #    } elsif($papersize eq '1') {
  429: #    } elsif($papersize eq '2') {
  430: #    } elsif($papersize eq '3'/) {
  431:     } elsif($papersize eq '6') {
  432: 	if ($layout eq 'book') {
  433: 	    if ($numberofcolumns == 1) {
  434: 		$textwidth = '18 cm';
  435: 		$textheight = '28 cm';
  436: 		$oddoffset = '-0.57 in';
  437: 		$evenoffset = '-0.57 in';
  438: 	    } elsif ($numberofcolumns == 2) {
  439: 		$textwidth = '96 mm';
  440: 		$textheight = '2 cm';
  441: 		$oddoffset = '-0.57 in';
  442: 		$evenoffset = '-0.57 in';
  443: 	    }
  444: 	} elsif ($layout eq 'album') {
  445: 	    if ($numberofcolumns eq '1') {
  446: 		$textwidth = '8.5 in';
  447: 		$textheight = '7.7 in';
  448: 		$oddoffset = '-40 pt';
  449: 		$evenoffset = '-60 pt';
  450: 	    } elsif ($numberofcolumns == 2) {
  451: 		$textwidth = '3.9 in';
  452: 		$textheight = '7.7 in';
  453: 		$oddoffset = '-40 pt';
  454: 		$evenoffset = '-60 pt';
  455: 	    }
  456: 	}
  457: #    } elsif($papersize eq '5') {
  458: #    } elsif($papersize eq '4') {
  459: #    } elsif($papersize eq '7') {
  460: #    } elsif($papersize eq '8') {
  461:     }
  462:     return $textwidth,$textheight,$oddoffset,$evenoffset,$topmargin;
  463: }
  464: 
  465: 
  466: sub get_name {
  467:     my ($uname,$udom)=@_;
  468:     if (!defined($uname)) { $uname=$ENV{'user.name'}; }
  469:     if (!defined($udom)) { $udom=$ENV{'user.domain'}; }
  470:     my $plainname=&Apache::loncommon::plainname($uname,$udom);
  471:     if ($plainname=~/^\s*$/) { $plainname=$uname.'@'.$udom; }
  472:     $plainname=&Apache::lonxml::latex_special_symbols($plainname,'header');
  473:     return $plainname;
  474: }
  475: 
  476: sub get_course {
  477:     my $courseidinfo;
  478:     if (defined($ENV{'request.course.id'})) {
  479: 	$courseidinfo = &Apache::lonxml::latex_special_symbols(&Apache::lonnet::unescape($ENV{'course.'.$ENV{'request.course.id'}.'.description'}),'header');
  480:     }
  481:     return $courseidinfo;
  482: }
  483: 
  484: sub page_format_transformation {
  485:     my ($papersize,$layout,$numberofcolumns,$choice,$text,$assignment,$tableofcontents,$indexlist) = @_; 
  486:     my ($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin);
  487:     $assignment=&Apache::lonxml::latex_special_symbols($assignment,'header');
  488:     if ($numberofcolumns != 1) {
  489: 	($textwidth,$textheight,$oddoffset,$evenoffset,$topmargin) = &page_format($papersize,$layout,$numberofcolumns,$topmargin);
  490:     } else {
  491: 	($textwidth,$textheight,$oddoffset,$evenoffset) = ($ENV{'form.width'},$ENV{'form.height'},$ENV{'form.leftmargin'},$ENV{'form.leftmargin'});
  492:     }
  493:     my $name = &get_name();
  494:     my $courseidinfo = &get_course();
  495:     if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
  496:     if ($layout eq 'album') {
  497: 	my $topmargintoinsert = '';
  498: 	if ($topmargin ne '0') {$topmargintoinsert='\setlength{\topmargin}{'.$topmargin.'}';}
  499: 	    $text =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{$oddoffset}\\setlength{\\evensidemargin}{$evenoffset}$topmargintoinsert\\setlength{\\textwidth}{$textwidth}\\setlength{\\textheight}{$textheight}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt}\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\usepackage{fancyhdr}\\pagestyle{fancy}\\rhead{}\\chead{}\\lhead{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}} \\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1} /;
  500:     } elsif ($layout eq 'book') {
  501: 	if ($choice ne 'All class print') { 
  502: 	    $text =~ s/\\begin{document}/\\textheight $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\usepackage{fancyhdr}\\pagestyle{fancy}\\rhead{}\\chead{}\\lhead{\\textbf{$name} $courseidinfo \\hfill \\thepage \\\\ \\textit{$assignment}}\\begin{document}\\voffset=-0\.8 cm\\setcounter{page}{1}/;
  503: 	} else {
  504: 	    $text =~ s/\\pagestyle{fancy}\\rhead{}\\chead{}\s*\\begin{document}/\\textheight = $textheight\\oddsidemargin = $evenoffset\\evensidemargin = $evenoffset\\textwidth= $textwidth\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/\$number_of_columns-0\.2cm}\\renewcommand{\\ref}{\\keephidden\}\\pagestyle{fancy}\\rhead{}\\chead{}\\begin{document}\\voffset=-0\.8cm\\setcounter{page}{1}  \\vskip 5 mm /;
  505: 	}
  506:     }
  507:     if ($tableofcontents eq 'yes') {$text=~s/(\\setcounter\{page\}\{1\})/$1 \\tableofcontents\\newpage /;}
  508:     if ($indexlist eq 'yes') {
  509: 	$text=~s/(\\begin{document})/\\makeindex $1/;
  510: 	$text=~s/(\\end{document})/\\strut\\\\\\strut\\printindex $1/;
  511:     }
  512:     return $text;
  513: }
  514: 
  515: 
  516: sub page_cleanup {
  517:     my $result = shift;	
  518:  
  519:     $result =~ m/\\end{document}(\d*)$/;
  520:     my $number_of_columns = $1;
  521:     my $insert = '{';
  522:     for (my $id=1;$id<=$number_of_columns;$id++) { $insert .='l'; }
  523:     $insert .= '}';
  524:     $result =~ s/(\\begin{longtable})INSERTTHEHEADOFLONGTABLE\\endfirsthead\\endhead/$1$insert/g;
  525:     $result =~ s/&\s*REMOVETHEHEADOFLONGTABLE\\\\/\\\\/g;
  526:     return $result,$number_of_columns;
  527: }
  528: 
  529: 
  530: sub details_for_menu {
  531: 
  532:     my $name_of_resourse = $hash{'title_'.$hash{'ids_'.$ENV{'form.postdata'}}};
  533:     my $symbolic = &Apache::lonnet::symbread($ENV{'form.postdata'});
  534:     my ($map,$id,$resource)=&Apache::lonnet::decode_symb($symbolic);
  535:     $map=&Apache::lonnet::clutter($map);
  536:     my $name_of_sequence;
  537:     $name_of_sequence = $hash{'title_'.$hash{'ids_'.$map}};
  538:     if ($name_of_sequence =~ /^\s*$/) {
  539: 	$map =~ m|([^/]+)$|;
  540: 	$name_of_sequence = $1;
  541:     }
  542:     my $name_of_map = $hash{'title_'.$hash{'ids_'.&Apache::lonnet::clutter($ENV{'request.course.uri'})}};
  543:     if ($name_of_map =~ /^\s*$/) {
  544: 	$ENV{'request.course.uri'} =~ m|([^/]+)$|;
  545: 	$name_of_map = $1;
  546:     }
  547:     return ($name_of_resourse,$name_of_sequence,$name_of_map);
  548: 
  549: }
  550: 
  551: 
  552: sub latex_corrections {
  553: 
  554:     my ($number_of_columns,$result) = @_;
  555: 
  556: #    $result =~ s/\\includegraphics{/\\includegraphics\[width=\\minipagewidth\]{/g;
  557:     $result =~ s/\$number_of_columns/$number_of_columns/g;
  558:     $result =~ s/(\\end{document})/\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License  $1/;
  559:     $result =~ s/(\\end{longtable}\s*)(\\strut\\newline\\noindent\\makebox\[\\textwidth\/$number_of_columns\]\[b\]{\\hrulefill})/$2$1/g;
  560:     $result =~ s/(\\end{longtable}\s*)\\strut\\newline/$1/g;
  561: #-- LaTeX corrections     
  562:     my $first_comment = index($result,'<!--',0);
  563:     while ($first_comment != -1) {
  564: 	my $end_comment = index($result,'-->',$first_comment);
  565: 	substr($result,$first_comment,$end_comment-$first_comment+3) = '';
  566: 	$first_comment = index($result,'<!--',$first_comment);
  567:     }
  568:     $result =~ s/^\s+$//gm; #remove empty lines
  569:     $result =~ s/(\s)(\s+)/$1/g; #removes more than one empty space
  570:     $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
  571:     $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
  572:     $result =~ s/{\\par }\s*\\\\/\\\\/gm;
  573: 	$result =~ s/\\\\\s+\[/ \[/g;
  574:     $result =~ s/\b__+\b/\\makebox\[1 cm\]\[b\]{\\hrulefill}/g;
  575:     #conversion of html characters to LaTeX equivalents
  576:     if ($result =~ m/&(\w+|#\d+);/) {
  577: 	$result = &character_chart($result);
  578:     }
  579:     $result =~ s/(\\end{tabular})\s*\\vskip 0 mm/$1/g;
  580:     $result =~ s/(\\begin{enumerate})\s*\\noindent/$1/g;
  581: 
  582:     return $result;
  583: }
  584: 
  585: 
  586: sub index_table {
  587:     my $currentURL = shift;
  588:     my $insex_string='';
  589:     $currentURL=~s/\.([^\/+])$/\.$1\.meta/;
  590:     $insex_string=&Apache::lonnet::metadata($currentURL,'keywords');
  591:     return $insex_string;
  592: }
  593: 
  594: 
  595: sub IndexCreation {
  596:     my ($texversion,$currentURL)=@_;
  597:     my @key_words=split(/,/,&index_table($currentURL));
  598:     my $chunk='';
  599:     my $st=index $texversion,'\addcontentsline{toc}{subsection}{';
  600:     if ($st>0) {
  601: 	for (my $i=0;$i<3;$i++) {$st=(index $texversion,'}',$st+1);}
  602: 	$chunk=substr($texversion,0,$st+1);
  603: 	substr($texversion,0,$st+1)=' ';
  604:     }
  605:     foreach my $key_word (@key_words) {
  606: 	if ($key_word=~/\S+/) {
  607: 	    $texversion=~s/\b($key_word)\b/$1 \\index{$key_word} /i;
  608: 	}
  609:     }			
  610:     if ($st>0) {substr($texversion,0,1)=$chunk;}
  611:     return $texversion;
  612: }
  613: 
  614: 
  615: sub output_data {
  616:     my ($r,$helper,$rparmhash) = @_;
  617:     my %parmhash = %$rparmhash;
  618:     my $bodytag=&Apache::loncommon::bodytag('Preparing Printout');
  619:     $r->print(<<ENDPART);
  620: <html>
  621: <head>
  622: <title>LON-CAPA output for printing</title>
  623: </head>
  624: $bodytag
  625: Please stand by while processing your print request, this may take some time ...
  626: ENDPART
  627: 
  628:     my $format_from_helper = $helper->{'VARS'}->{'FORMAT'};
  629:     my ($result,$selectionmade) = ('','');
  630:     my $number_of_columns = 1; #used only for pages to determine the width of the cell
  631:     my @temporary_array=split /\|/,$format_from_helper;
  632:     my ($laystyle,$numberofcolumns,$papersize)=@temporary_array;
  633:     if ($laystyle eq 'L') {
  634: 	$laystyle='album';
  635:     } else {
  636: 	$laystyle='book';
  637:     }
  638:     my ($textwidth,$textheight,$oddoffset,$evenoffset) = &page_format($papersize,$laystyle,$numberofcolumns);
  639:     my $assignment =  $ENV{'form.assignment'};
  640:     my $LaTeXwidth; 
  641:     if ($textwidth=~/(\d+\.?\d*)\s*cm/) {
  642: 	$LaTeXwidth = $1*10;
  643:     } elsif ($textwidth=~/(\d+\.?\d*)\s*mm/) {
  644: 	$LaTeXwidth = $1;
  645:     } elsif ($textwidth=~/(\d+\.?\d*)\s*in/) {
  646: 	$LaTeXwidth = $1*25.4;
  647:     }
  648:     $LaTeXwidth.=' mm';
  649:     
  650:     if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'current_document') {
  651:       #-- single document - problem, page, html, xml, ...
  652: 	my $currentURL;
  653: 	if ($helper->{'VARS'}->{'construction'} ne '1') {
  654:             #prints published resource
  655: 	    $currentURL=$helper->{'VARS'}->{'postdata'};
  656: 	} else {
  657:             #prints resource from the construction space
  658: 	    $currentURL='/'.$helper->{'VARS'}->{'filename'};
  659: 	    if ($currentURL=~/([^?]+)/) {$currentURL=$1;}
  660: 	}
  661: 	$selectionmade = 1;
  662: 	if ($currentURL=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)$/) {
  663: 	    my %moreenv;
  664: 	    $moreenv{'request.filename'}=$currentURL;
  665: 	    my %form;
  666: 	    $form{'grade_target'}='tex';
  667: 	    $form{'textwidth'}=$LaTeXwidth;	
  668: 	    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
  669: 	    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  670: 	    my $rndseed=time;
  671: 	    if ($helper->{'VARS'}->{'curseed'}) {
  672: 		$rndseed=$helper->{'VARS'}->{'curseed'};
  673: 	    }
  674: 	    $form{'rndseed'}=$rndseed;
  675: 	    &Apache::lonnet::appenv(%moreenv);
  676: 	    &Apache::lonnet::delenv('form.counter');
  677: 	    &Apache::lonxml::init_counter();
  678: 	    my $texversion=&Apache::lonnet::ssi($currentURL,%form);
  679: 	    &Apache::lonnet::delenv('form.counter');
  680: 	    &Apache::lonnet::delenv('request.filename');
  681: 	    if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  682: 		my %form;
  683: 		$form{'grade_target'}='answer';
  684: 		$form{'answer_output_mode'}='tex';
  685: 		$form{'rndseed'}=$rndseed;
  686: 		my $answer=&Apache::lonnet::ssi($currentURL,%form);
  687: 		$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
  688: 	    }
  689: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  690: 		$texversion=&IndexCreation($texversion,$currentURL);
  691: 	    }
  692: 	    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
  693: 		$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$currentURL| \\strut\\\\\\strut /;
  694: 
  695: 	    }
  696: 	    $result .= $texversion;
  697: 	    if ($currentURL=~m/\.page\s*$/) {
  698: 		($result,$number_of_columns) = &page_cleanup($result);
  699: 	    }
  700:         } elsif ($currentURL=~/\.sequence$/ && $helper->{'VARS'}->{'construction'} eq '1') {
  701:             #printing content of sequence from the construction space	
  702: 	    my $flag_latex_header_remove = 'NO'; 
  703: 	    my $rndseed=time;
  704: 	    if ($helper->{'VARS'}->{'curseed'}) {
  705: 		$rndseed=$helper->{'VARS'}->{'curseed'};
  706: 	    }
  707: 	    $currentURL=~s|\/~([^\/]+)\/|\/home\/$1\/public_html\/|;
  708: 	    my $errtext=&Apache::lonratedt::mapread($currentURL);
  709: 	    for (my $member=0;$member<=$#Apache::lonratedt::order;$member++) {
  710: 		$Apache::lonratedt::resources[$Apache::lonratedt::order[$member]]=~/^([^:]*):([^:]*):/;
  711: 		my $urlp=$2;
  712: 		if ($urlp=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm)$/) {
  713: 		    my %form;
  714: 		    $form{'grade_target'}='tex';
  715: 		    $form{'textwidth'}=$LaTeXwidth;
  716: 		    $form{'problem_split'}=$parmhash{'problem_stream_switch'};
  717: 		    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  718: 		    $form{'rndseed'}=$rndseed;
  719: 		    my $texversion=&Apache::lonnet::ssi($urlp,%form);
  720: 		    if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  721: 			my %form;
  722: 			$form{'grade_target'}='answer';
  723: 			$form{'answer_output_mode'}='tex';
  724: 			$form{'rndseed'}=$rndseed;
  725:                         if ($urlp=~/\/res\//) {$ENV{'request.state'}='published';}
  726: 			####my $answer=' SSSSSS '.$ENV{'request.state'}.' FFFFFFF ';
  727: 			my $answer=&Apache::lonnet::ssi($urlp,%form);
  728: 			$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
  729: 		    }
  730: 		    if ($flag_latex_header_remove ne 'NO') {
  731: 			$texversion = &latex_header_footer_remove($texversion);
  732: 		    } else {
  733: 			$texversion =~ s/\\end{document}//;
  734: 		    }
  735: 		    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  736: 			$texversion=&IndexCreation($texversion,$urlp);
  737: 		    }
  738: 		    if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URpL'} eq 'yes') {
  739: 			$texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
  740: 		    }
  741: 		    $result.=$texversion;
  742: 		    $flag_latex_header_remove = 'YES';
  743: 		} elsif ($urlp=~/\.(sequence|page)$/) {
  744: 		    $result.='\strut\newline\noindent Sequence/page '.$urlp.'\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent ';
  745: 		}  
  746: 	    }
  747: 	    if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\begin{document})/$1 \\fbox\{RANDOM SEED IS $rndseed\} /;}
  748: 	    $result .= '\end{document}';   
  749: 	} else {
  750: 	  $result.='\documentclass[letterpaper]{article}\usepackage{calc}\begin{document}Printout of this type of document is currently not supported: ';
  751: 	  if ($currentURL=~/\/(aboutme|syllabus|bulletinboard|smppg)$/) {
  752: 	      $result.=$1;
  753: 	  } elsif ($currentURL=~/\/ext\//) {
  754: 	      $result.=' \strut \\\\ THIS IS EXTERNAL RESOURCE WITH URL \strut \\\\ '.$currentURL.' ';
  755: 	  } else {
  756: 	      $result.=$currentURL;
  757: 	  }
  758: 	  $result.=' \end{document}'
  759: 	}
  760:     } elsif (($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') or
  761:              ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') or
  762:              ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems')) { 
  763:         #-- produce an output string
  764: 	my %form=();	   
  765: 	$form{'grade_target'}='tex';
  766: 	$form{'textwidth'}=$LaTeXwidth;
  767: 	$form{'problem_split'}=$parmhash{'problem_stream_switch'};
  768: 	$form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  769: 	my $flag_latex_header_remove = 'NO';
  770: 	my $flag_page_in_sequence = 'NO';
  771: 	my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
  772: 	my $prevassignment='';
  773: 	&Apache::lonnet::delenv('form.counter');
  774: 	&Apache::lonxml::init_counter();
  775: 	for (my $i=0;$i<=$#master_seq;$i++) {
  776: 	    my (undef,undef,$urlp)=&Apache::lonnet::decode_symb($master_seq[$i]);
  777: 	    $urlp=&Apache::lonnet::clutter($urlp);
  778: 	    if ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems') {
  779: 		$selectionmade = 2;
  780: 	    } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'map_problems_pages') {
  781: 		$selectionmade = 3;
  782: 	    } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'all_problems') {
  783: 		$selectionmade = 4;
  784: 	    }
  785: 	    $form{'symb'}=$master_seq[$i];
  786: 	    my ($sequence)=&Apache::lonnet::decode_symb($master_seq[$i]);
  787: 	    my $assignment=&Apache::lonxml::latex_special_symbols(&Apache::lonnet::gettitle($sequence),'header'); #tittle of the assignment which contains this problem
  788: 	    #&Apache::lonnet::logthis("Trying to get $urlp with symb $master_seq[$i]");
  789: 	    my $texversion=&Apache::lonnet::ssi($urlp,%form);
  790: 	    if ($urlp=~/\.page$/) {
  791: 		($texversion,my $number_of_columns_page) = &page_cleanup($texversion);
  792: 		if ($number_of_columns_page > $number_of_columns) {$number_of_columns=$number_of_columns_page;} 
  793: 		$texversion =~ s/\\end{document}\d*/\\end{document}/;
  794: 		$flag_page_in_sequence = 'YES';
  795: 	    } 
  796: 	    if ($flag_latex_header_remove ne 'NO') {
  797: 		$texversion = &latex_header_footer_remove($texversion);
  798: 	    } else {
  799: 		$texversion =~ s/\\end{document}//;
  800: 	    }
  801: 	    if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  802: 		my %form;
  803: 		$form{'grade_target'}='answer';
  804: 		$form{'answer_output_mode'}='tex';
  805: 		my $answer=&Apache::lonnet::ssi($urlp,%form);
  806: 		$texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
  807: 	    }
  808: 	    if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  809: 		$texversion=&IndexCreation($texversion,$urlp);
  810: 	    }
  811: 	    if (($selectionmade == 4) and ($assignment ne $prevassignment) and ($i>=1)) {
  812: 		my ($name,$courseidinfo) = &get_name;
  813: 		$courseidinfo = &get_course();
  814: 		if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
  815: 		$prevassignment=$assignment;
  816: 		$result .='\newpage \noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$name.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$assignment.'}}} \vskip -5 mm ';
  817: 	    }
  818: 	    $result .= $texversion;
  819: 	    $flag_latex_header_remove = 'YES';   
  820: 	}
  821: 	&Apache::lonnet::delenv('form.counter');
  822: 	if ($flag_page_in_sequence eq 'YES') {$result =~ s/\\usepackage{calc}/\\usepackage{calc}\\usepackage{longtable}/;}	
  823: 	$result .= '\end{document}';
  824:      } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_for_students') { 
  825:      #-- prints assignments for whole class or for selected students  
  826: 	 $selectionmade=5;
  827: 	 my @students=split /\|\|\|/, $helper->{'VARS'}->{'STUDENTS'};
  828: 	 my @master_seq=split /\|\|\|/, $helper->{'VARS'}->{'RESOURCES'};
  829: 	 #loop over students
  830: 	 my $flag_latex_header_remove = 'NO'; 
  831: 	 my %moreenv;
  832: 	 $moreenv{'form.textwidth'}=$LaTeXwidth;
  833: 	 &Apache::lonnet::appenv(%moreenv);
  834: 	 my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Print Status','Class Print Status',$#students+1);
  835: 	 foreach my $person (@students) {
  836: 	    my $current_output = ''; 
  837: #	    my ($usersection,$username,$userdomain) = split /:/,$person;
  838: 	    my ($username,$userdomain) = split /:/,$person;
  839: 	    my $fullname = &get_name($username,$userdomain);
  840: 
  841: 	    if ($parmhash{'anonymous_quiz'}=~/yes/) {$fullname=' ';} #put here something reasonable for anonymous exams or quiz
  842:             #goes through all resources, checks if they are available for current student, and produces output   
  843: 	    &Apache::lonnet::delenv('form.counter');
  844: 	    &Apache::lonxml::init_counter();
  845: 	    foreach my $curresline (@master_seq)  {
  846: 		if ($curresline=~ m/\.(problem|exam|quiz|assess|survey|form|library)$/) {
  847: 		    my ($map,$id,$res_url) = &Apache::lonnet::decode_symb($curresline);
  848: 		    if (&Apache::lonnet::allowed('bre',$res_url)) {
  849: 			my $rendered = &Apache::loncommon::get_student_view($curresline,$username,$userdomain,
  850:                                                                         $ENV{'request.course.id'},'tex');
  851: 			if ($flag_latex_header_remove eq 'YES') {
  852: 			    $rendered = &latex_header_footer_remove($rendered);
  853: 			} else {
  854: 			    $rendered =~ s/\\end{document}//;
  855: 			}
  856: 			if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  857: 			    my %form;
  858: 			    $form{'answer_output_mode'}='tex';
  859: 			    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  860: 			    my $ansrendered = &Apache::loncommon::get_student_answers($curresline,$username,$userdomain,$ENV{'request.course.id'},%form);
  861: 			    $rendered=~s/(\\keephidden{ENDOFPROBLEM})/$ansrendered$1/;
  862: 			}
  863: 			$current_output .= $rendered;
  864: 		    }
  865: 		    $flag_latex_header_remove = 'YES';
  866: 		}
  867: 	    }
  868: 	    my $courseidinfo = &get_course();
  869: 	    if (defined($courseidinfo)) { $courseidinfo=' - '.$courseidinfo }
  870: 	    my $currentassignment=&Apache::lonxml::latex_special_symbols($helper->{VARS}->{'assignment'},'header');
  871: 	    if ($current_output=~/\\documentclass/) {
  872: 		$current_output =~ s/\\begin{document}/\\setlength{\\topmargin}{1cm} \\begin{document}\\noindent\\lhead{\\textit{\\textbf{$fullname}}$courseidinfo \\hfill \\thepage \\\\ \\textit{$currentassignment}}\\vskip 3 mm /;
  873: 	    } else {
  874: 		my $blanspages = '';
  875: 		for (my $j=0;$j<$helper->{'VARS'}->{'EMPTY_PAGES'};$j++) {$blanspages.='\clearpage\strut\clearpage';}
  876: 		$current_output = '\strut\\newline\\noindent\\makebox[\\textwidth/$number_of_columns][b]{\\hrulefill}\\newline\\noindent{\\tiny Printed from LON-CAPA\\copyright MSU{\\hfill} Licensed under GNU General Public License }\\newpage '.$blanspages.'\setcounter{page}{1}\noindent\parbox{\minipagewidth}{\noindent\\lhead{\\textit{\\textbf{'.$fullname.'}}'.$courseidinfo.' \\hfill \\thepage \\\\ \\textit{'.$currentassignment.'}}} \vskip -5 mm '.$current_output;
  877: 	    }
  878: 	    $result .= $current_output;
  879: 	    &Apache::lonnet::delenv('form.counter');	    
  880: 	    &Apache::lonxml::init_counter(); 
  881: 	    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
  882: 						    'last student '.$fullname);
  883: 	}
  884: 	&Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
  885: 	$result .= '\end{document}';
  886: 	&Apache::lonnet::delenv('form.textwidth');
  887:     } elsif ($helper->{'VARS'}->{'PRINT_TYPE'} eq 'problems_from_directory') {      
  888:     #prints selected problems from the subdirectory 
  889: 	$selectionmade = 6;
  890:         my @list_of_files=split /\|\|\|/, $helper->{'VARS'}->{'FILES'};
  891: 	@list_of_files=sort @list_of_files;
  892: 	my $flag_latex_header_remove = 'NO'; 
  893: 	my $rndseed=time;
  894: 	if ($helper->{'VARS'}->{'curseed'}) {
  895: 	    $rndseed=$helper->{'VARS'}->{'curseed'};
  896: 	}
  897: 	for (my $i=0;$i<=$#list_of_files;$i++) {
  898: 	    my $urlp = $list_of_files[$i];
  899: 	    if ($urlp=~/\//) {
  900: 		my %form;
  901: 		$form{'grade_target'}='tex';
  902: 		$form{'textwidth'}=$LaTeXwidth;
  903: 		$form{'rndseed'}=$rndseed;
  904: 		if ($urlp =~ m|/home/([^/]+)/public_html|) {
  905: 		    $urlp =~ s|/home/([^/]*)/public_html|/~$1|;
  906: 		} else {
  907: 		    $urlp =~ s|^/home/httpd/html||;
  908: 		}
  909: 		my $texversion=&Apache::lonnet::ssi($urlp,%form);
  910: 		if($helper->{'VARS'}->{'ANSWER_TYPE'} eq 'no') {
  911: 		    my %form;
  912: 		    $form{'grade_target'}='answer';
  913: 		    $form{'answer_output_mode'}='tex';
  914: 		    $form{'latex_type'}=$helper->{'VARS'}->{'LATEX_TYPE'};
  915: 		    $form{'rndseed'}=$rndseed;
  916: 		    my $answer=&Apache::lonnet::ssi($urlp,%form);
  917: 		    $texversion=~s/(\\keephidden{ENDOFPROBLEM})/$answer$1/;
  918: 		}
  919:                 #this chunck is responsible for printing the path to problem
  920: 		my $newurlp = '';
  921: 		my $HowMany = length($urlp)*2;
  922: 		if ($HowMany > $LaTeXwidth) {
  923: 		    my @temporrary = split '/',$urlp;
  924: 		    my $HowManyNew = 0;
  925: 		    for (my $ii=0;$ii<=$#temporrary;$ii++) {
  926: 			if ($temporrary[$ii] ne '') {
  927: 			    $HowManyNew += length($temporrary[$ii])*2;
  928: 			    if ($HowManyNew < $LaTeXwidth ) {
  929: 				$newurlp .=  '/'.$temporrary[$ii];
  930: 			    } else {
  931: 				$HowManyNew = 0;
  932: 				$newurlp .=  '|\vskip -1 mm \noindent \verb|';
  933: 				$ii--;
  934: 			    }
  935: 			}
  936: 		    }
  937: 		}
  938: 		$texversion =~ s/(\\begin{minipage}{\\textwidth})/$1 {\\small\\noindent\\verb|$newurlp\|\\vskip 0 mm}/;
  939: 		if ($flag_latex_header_remove ne 'NO') {
  940: 		    $texversion = &latex_header_footer_remove($texversion);
  941: 		} else {
  942: 		    $texversion =~ s/\\end{document}//;
  943: 		}
  944: 		if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  945: 		    $texversion=&IndexCreation($texversion,$urlp);
  946: 		}
  947: 		if ($helper->{'VARS'}->{'CONSTR_RESOURSE_URL'} eq 'yes') {
  948: 		    $texversion=~s/(\\addcontentsline\{toc\}\{subsection\}\{[^\}]*\})/$1 URL: \\verb|$urlp| \\strut\\\\\\strut /;
  949: 		    
  950: 		}
  951: 		$result .= $texversion;
  952: 	    }
  953: 	    $flag_latex_header_remove = 'YES';  
  954: 	}
  955: 	if ($helper->{VARS}->{'construction'} eq '1') {$result=~s/(\\typeout)/ RANDOM SEED IS $rndseed $1/;}
  956: 	$result .= '\end{document}';      	
  957:     }
  958: #-------------------------------------------------------- corrections for the different page formats
  959:     $result = &page_format_transformation($papersize,$laystyle,$numberofcolumns,$helper->{'VARS'}->{'PRINT_TYPE'},$result,$helper->{VARS}->{'assignment'},$helper->{'VARS'}->{'TABLE_CONTENTS'},$helper->{'VARS'}->{'TABLE_INDEX'});
  960:     $result = &latex_corrections($number_of_columns,$result);
  961:     #changes page's parameters for the one column output 
  962:     if ($numberofcolumns == 1) {
  963: 	$result =~ s/\\textwidth= 9cm/\\textwidth= $helper->{'VARS'}->{'pagesize.width'} $helper->{'VARS'}->{'pagesize.widthunit'} /;
  964: 	$result =~ s/\\textheight 25\.9cm/\\textheight $helper->{'VARS'}->{'pagesize.height'} $helper->{'VARS'}->{'pagesize.heightunit'} /;
  965: 	$result =~ s/\\evensidemargin = -0\.57in/\\evensidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
  966: 	$result =~ s/\\oddsidemargin = -0\.57in/\\oddsidemargin= $helper->{'VARS'}->{'pagesize.lmargin'} $helper->{'VARS'}->{'pagesize.lmarginunit'} /;
  967:     }
  968:     if ($helper->{'VARS'}->{'TABLE_CONTENTS'} eq 'yes') {$selectionmade*=10;}
  969:     if ($helper->{'VARS'}->{'TABLE_INDEX'} eq 'yes') {
  970: 	if ($selectionmade<10) {$selectionmade*=100;} else {$selectionmade*=10;}
  971:     }
  972:     if ($ENV{'request.role.adv'}) {$selectionmade*=10000;}
  973: #-- writing .tex file in prtspool 
  974:     my $temp_file;
  975:     my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout_".time."_".rand(10000000).".tex";
  976:     unless ($temp_file = Apache::File->new('>'.$filename)) {
  977: 	$r->log_error("Couldn't open $filename for output $!");
  978: 	return SERVER_ERROR; 
  979:     } 
  980:     print $temp_file $result;
  981: 
  982: $r->print(<<FINALEND);
  983: <meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$filename&$laystyle&$numberofcolumns&$selectionmade">
  984: </body>
  985: </html>
  986: FINALEND
  987: }
  988: 
  989: 
  990: 
  991: sub handler {
  992: 
  993:     my $r = shift;
  994:     my $helper;
  995: 
  996: #    my $loaderror=&Apache::lonnet::overloaderror($r);
  997: #    if ($loaderror) { return $loaderror; }
  998: #    $loaderror=
  999: #       &Apache::lonnet::overloaderror($r,
 1000: #         $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
 1001: #    if ($loaderror) { return $loaderror; }
 1002: 
 1003:     my $result = printHelper($r);
 1004:     if (!ref($result)) {
 1005: 	return $result;
 1006:     }
 1007:     $helper = $result;
 1008:    
 1009: #	my $key; 
 1010: #	foreach $key (keys %{$helper->{'VARS'}}) {
 1011: #	    $r->print(' '.$key.'->'.$helper->{'VARS'}->{$key}.'<-<br />');
 1012: #	}
 1013: #	return OK;
 1014: 
 1015:     my %parmhash=&Apache::lonnet::coursedescription($ENV{'request.course.id'});
 1016:     
 1017: #	my $key; 
 1018: #	foreach $key (keys %parmhash) {
 1019: #	    $r->print(' '.$key.'->'.$parmhash{$key}.'<-<br />');
 1020: #	}
 1021: #	return OK;
 1022: 
 1023:     &output_data($r,$helper,\%parmhash);
 1024:     return OK;
 1025: } 
 1026: 
 1027: use Apache::lonhelper;
 1028: 
 1029: sub addMessage {
 1030:     my $text = shift;
 1031:     my $paramHash = Apache::lonhelper::getParamHash();
 1032:     $paramHash->{MESSAGE_TEXT} = $text;
 1033:     Apache::lonhelper::message->new();
 1034: }
 1035: 
 1036: use Data::Dumper;
 1037: 
 1038: sub printHelper {
 1039:     my $r = shift;
 1040: 
 1041:     if ($ENV{'request.course.id'}) {
 1042: 	my $fn=$ENV{'request.course.fn'};
 1043: 	tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640);
 1044:     }
 1045: 
 1046:     if ($r->header_only) {
 1047:         if ($ENV{'browser.mathml'}) {
 1048:             &Apache::loncommon::content_type($r,'text/xml');
 1049:         } else {
 1050:             &Apache::loncommon::content_type($r,'text/html');
 1051:         }
 1052:         $r->send_http_header;
 1053:         return OK;
 1054:     }
 1055: 
 1056:     # Send header, nocache
 1057:     if ($ENV{'browser.mathml'}) {
 1058:         &Apache::loncommon::content_type($r,'text/xml');
 1059:     } else {
 1060:         &Apache::loncommon::content_type($r,'text/html');
 1061:     }
 1062:     &Apache::loncommon::no_cache($r);
 1063:     $r->send_http_header;
 1064:     $r->rflush();
 1065: 
 1066:     # Unfortunately, this helper is so complicated we have to
 1067:     # write it by hand
 1068: 
 1069:     Apache::loncommon::get_unprocessed_cgi($ENV{QUERY_STRING});
 1070:     
 1071:     my $helper = Apache::lonhelper::helper->new("Printing Helper");
 1072:     $helper->declareVar('symb');
 1073:     $helper->declareVar('postdata');    
 1074:     $helper->declareVar('curseed');    
 1075:     $helper->declareVar('filename');
 1076:     $helper->declareVar('construction');
 1077:     $helper->declareVar('assignment');
 1078:     
 1079:     # This will persistently load in the data we want from the
 1080:     # very first screen.
 1081:     # Detect whether we're coming from construction space
 1082:     if ($ENV{'form.postdata'}=~/^(?:http:\/\/[^\/]+\/|\/|)\~([^\/]+)\/(.*)$/) {
 1083:         $helper->{VARS}->{'filename'} = "~$1/$2";
 1084:         $helper->{VARS}->{'construction'} = 1;
 1085:     } else {
 1086:         if ($ENV{'form.postdata'}) {
 1087:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($ENV{'form.postdata'});
 1088:         }
 1089:         if ($ENV{'form.symb'}) {
 1090:             $helper->{VARS}->{'symb'} = $ENV{'form.symb'};
 1091:         }
 1092:         if ($ENV{'form.url'}) {
 1093:             $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 1094:         }
 1095:     }
 1096: 
 1097:     if ($ENV{'form.symb'}) {
 1098:         $helper->{VARS}->{'symb'} = $ENV{'form.symb'};
 1099:     }
 1100:     if ($ENV{'form.url'}) {
 1101:         $helper->{VARS}->{'symb'} = &Apache::lonnet::symbread($helper->{VARS}->{'postdata'});
 1102: 
 1103:     }
 1104:     
 1105:     my ($resourceTitle,$sequenceTitle,$mapTitle) = &details_for_menu;
 1106:     if ($sequenceTitle ne '') {$helper->{VARS}->{'assignment'}=$sequenceTitle;}
 1107: 
 1108:     
 1109:     # Extract map
 1110:     my $symb = $helper->{VARS}->{'symb'};
 1111:     my ($map, $id, $url);
 1112:     my $subdir;
 1113: 
 1114:     # Get the resource name from construction space
 1115:     if ($helper->{VARS}->{'construction'}) {
 1116:         $resourceTitle = substr($helper->{VARS}->{'filename'}, 
 1117:                                 rindex($helper->{VARS}->{'filename'}, '/')+1);
 1118:         $subdir = substr($helper->{VARS}->{'filename'},
 1119:                          0, rindex($helper->{VARS}->{'filename'}, '/') + 1);
 1120:     } else {
 1121:         ($map, $id, $url) = &Apache::lonnet::decode_symb($symb);
 1122:         $helper->{VARS}->{'postdata'} = Apache::lonnet::clutter($url);
 1123: 
 1124:         if (!$resourceTitle) { # if the resource doesn't have a title, use the filename
 1125:             my $postdata = $helper->{VARS}->{'postdata'};
 1126:             $resourceTitle = substr($postdata, rindex($postdata, '/') + 1);
 1127:         }
 1128:         $subdir = &Apache::lonnet::filelocation("", $url);
 1129:     }
 1130:     if (!$helper->{VARS}->{'curseed'} && $ENV{'form.curseed'}) {
 1131: 	$helper->{VARS}->{'curseed'}=$ENV{'form.curseed'};
 1132:     }
 1133: 
 1134:     my $userCanSeeHidden = Apache::lonnavmaps::advancedUser();
 1135:     my $userPriviledged = ($ENV{'request.role'}=~m/^cc\./ or
 1136: 			   $ENV{'request.role'}=~m/^in\./ or
 1137: 			   $ENV{'request.role'}=~m/^ta\./);
 1138: 
 1139:     Apache::lonhelper::registerHelperTags();
 1140: 
 1141:     # "Delete everything after the last slash."
 1142:     $subdir =~ s|/[^/]+$||;
 1143:     if (not $helper->{VARS}->{'construction'}) {
 1144: 	$subdir='/home/httpd/html/res/'.$subdir;
 1145:     }
 1146:     # "Remove all duplicate slashes."
 1147:     $subdir =~ s|/+|/|g;
 1148: 
 1149:     # What can be printed is a very dynamic decision based on
 1150:     # lots of factors. So we need to dynamically build this list.
 1151:     # To prevent security leaks, states are only added to the wizard
 1152:     # if they can be reached, which ensures manipulating the form input
 1153:     # won't allow anyone to reach states they shouldn't have permission
 1154:     # to reach.
 1155: 
 1156:     # printChoices is tracking the kind of printing the user can
 1157:     # do, and will be used in a choices construction later.
 1158:     # In the meantime we will be adding states and elements to
 1159:     # the helper by hand.
 1160:     my $printChoices = [];
 1161:     my $paramHash;
 1162: 
 1163:     if ($resourceTitle) {
 1164:         push @{$printChoices}, ["<b>$resourceTitle</b> (what you just saw on the screen)", 'current_document', 'PAGESIZE'];
 1165:     }
 1166: 
 1167: #    $r->print($helper->{VARS}->{'postdata'});
 1168: 
 1169:     # Useful filter strings
 1170:     my $isProblem = '$res->is_problem()';
 1171:     $isProblem .= ' && !$res->randomout()' if !$userCanSeeHidden;
 1172:     my $isProblemOrMap = '$res->is_problem() || $res->is_map()';
 1173:     my $isNotMap = '!$res->is_map()';
 1174:     $isNotMap .= ' && !$res->randomout()' if !$userCanSeeHidden;
 1175:     my $isMap = '$res->is_map()';
 1176:     my $symbFilter = '$res->symb()';
 1177:     my $urlValue = '$res->src()';
 1178: 
 1179:     $helper->declareVar('SEQUENCE');
 1180: 
 1181:     # Useful for debugging: Dump the help vars
 1182:     #$r->print(Dumper($helper->{VARS}));
 1183:     #$r->print($map);
 1184: 
 1185:     # If we're in a sequence...
 1186:     if (($helper->{'VARS'}->{'construction'} ne '1') &&
 1187: 	$helper->{VARS}->{'postdata'} && $sequenceTitle) {
 1188:         # Allow problems from sequence
 1189:         push @{$printChoices}, ["<b>Problems</b> in $sequenceTitle", 'map_problems', 'CHOOSE_PROBLEMS'];
 1190:         # Allow all resources from sequence
 1191:         push @{$printChoices}, ["<b>Resources</b> in $sequenceTitle", 'map_problems_pages', 'CHOOSE_PROBLEMS_HTML'];
 1192: 
 1193:         my $helperFragment = <<HELPERFRAGMENT;
 1194:   <state name="CHOOSE_PROBLEMS" title="Select Problem(s) to print">
 1195:     <message>(mark them then click "next" button) <br /></message>
 1196:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1">
 1197:       <nextstate>PAGESIZE</nextstate>
 1198:       <filterfunc>return $isProblem;</filterfunc>
 1199:       <mapurl>$map</mapurl>
 1200:       <valuefunc>return $symbFilter;</valuefunc>
 1201:       </resource>
 1202:     </state>
 1203: 
 1204:   <state name="CHOOSE_PROBLEMS_HTML" title="Select Resource(s) to print">
 1205:     <message>(mark them then click "next" button) <br /></message>
 1206:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1">
 1207:       <nextstate>PAGESIZE</nextstate>
 1208:       <filterfunc>return $isNotMap;</filterfunc>
 1209:       <mapurl>$map</mapurl>
 1210:       <valuefunc>return $symbFilter;</valuefunc>
 1211:       </resource>
 1212:     </state>
 1213: HELPERFRAGMENT
 1214: 
 1215:         &Apache::lonxml::xmlparse($r, 'helper', $helperFragment); 
 1216:     }
 1217: 
 1218:     # If the user is priviledged, allow them to print all 
 1219:     # problems in the course, optionally for selected students
 1220:     if ($userPriviledged && ($helper->{VARS}->{'postdata'}=~/\/res\//)) { 
 1221:         push @{$printChoices}, ['Problems from <b>entire course</b>', 'all_problems', 'ALL_PROBLEMS'];
 1222: 	if ($sequenceTitle) {
 1223: 	    push @{$printChoices}, ["Problems from $sequenceTitle for <b>selected students</b>", 'problems_for_students', 'CHOOSE_STUDENTS'];
 1224: 	}
 1225: 
 1226:         &Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_STUDENTS);
 1227:   <state name="ALL_PROBLEMS" title="Select Problem(s) to print">
 1228:     <message>(mark them then click "next" button) <br /></message>
 1229:     <resource variable="RESOURCES" multichoice="1"
 1230: 	suppressEmptySequences='1' addstatus="1">
 1231:       <nextstate>PAGESIZE</nextstate>
 1232:       <filterfunc>return $isProblemOrMap;</filterfunc>
 1233:       <choicefunc>return $isProblem;</choicefunc>
 1234:       <valuefunc>return $symbFilter;</valuefunc>
 1235:       </resource>
 1236:     </state>
 1237: 
 1238:   <state name="CHOOSE_STUDENTS" title="Select Students and Resources">
 1239:     <student multichoice='1' variable="STUDENTS" nextstate="PAGESIZE" />
 1240:     <message><br /><big><i><b>Select resources for the assignment</b></i></big><br /></message>
 1241:     <resource variable="RESOURCES" multichoice="1" addstatus="1">
 1242:       <filterfunc>return $isProblem</filterfunc>
 1243:       <mapurl>$map</mapurl>
 1244:       <valuefunc>return $symbFilter</valuefunc>
 1245:       </resource>
 1246:     <message><br /><big><i><b>How should the results be printed?</b></i></big><br /></message>
 1247:     <choices variable="EMPTY_PAGES">
 1248:       <choice computer='0'>Start each student\'s assignment on a new page/column (add a pagefeed after each assignment)</choice>
 1249:       <choice computer='1'>Add one empty page/column after each student\'s assignment</choice>
 1250:       <choice computer='2'>Add two empty pages/column after each student\'s assignment</choice>
 1251:       <choice computer='3'>Add three empty pages/column after each student\'s assignment</choice>
 1252:       </choices>
 1253:     </state>
 1254: CHOOSE_STUDENTS
 1255:     }
 1256: 
 1257:     # FIXME: That RE should come from a library somewhere.
 1258:     if ((((&Apache::lonnet::allowed('bre',$subdir) eq 'F') and ($helper->{VARS}->{'postdata'}=~/\.(problem|exam|quiz|assess|survey|form|library|page|xml|html|htm|xhtml|xhtm)/)) or defined $helper->{'VARS'}->{'construction'}) and $ENV{'request.role.adv'} and $subdir ne '/home/httpd/html/res/') {    
 1259:         push @{$printChoices}, ["Problems from current subdirectory <b>$subdir</b>", 'problems_from_directory', 'CHOOSE_FROM_SUBDIR'];
 1260: 
 1261:         my $f = '$filename';
 1262:         my $xmlfrag = <<CHOOSE_FROM_SUBDIR;
 1263:   <state name="CHOOSE_FROM_SUBDIR" title="Select File(s) from <b><small>$subdir</small></b> to print">
 1264:     <message>(mark them then click "next" button) <br /></message>
 1265:     <files variable="FILES" multichoice='1'>
 1266:       <nextstate>PAGESIZE</nextstate>
 1267:       <filechoice>return '$subdir';</filechoice>
 1268: CHOOSE_FROM_SUBDIR
 1269:         
 1270:         # this is broken up because I really want interpolation above,
 1271:         # and I really DON'T want it below
 1272:         $xmlfrag .= <<'CHOOSE_FROM_SUBDIR';
 1273:       <filefilter>return Apache::lonhelper::files::not_old_version($filename) &&
 1274: 	  $filename =~ m/\.(problem|exam|quiz|assess|survey|form|library)$/;
 1275:       </filefilter>
 1276:       </files>
 1277:     </state>
 1278: CHOOSE_FROM_SUBDIR
 1279:         &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 1280:     }
 1281: 
 1282:     # Allow the user to select any sequence in the course, feed it to
 1283:     # another resource selector for that sequence
 1284:     if (!$helper->{VARS}->{'construction'}) {
 1285: 	push @$printChoices, ["Resources from <b>selected sequence</b> in course",
 1286: 			      'map_problems_pages', 'CHOOSE_SEQUENCE'];
 1287: 	&Apache::lonxml::xmlparse($r, 'helper', <<CHOOSE_FROM_ANY_SEQUENCE);
 1288:   <state name="CHOOSE_SEQUENCE" title="Select Sequence To Print From">
 1289:     <message>Select the sequence to print resources from:</message>
 1290:     <resource variable="SEQUENCE">
 1291:       <nextstate>CHOOSE_FROM_ANY_SEQUENCE</nextstate>
 1292:       <filterfunc>return \$res->is_sequence;</filterfunc>
 1293:       <valuefunc>return $urlValue;</valuefunc>
 1294:       </resource>
 1295:     </state>
 1296:   <state name="CHOOSE_FROM_ANY_SEQUENCE" title="Select Resources To Print">
 1297:     <message>(mark desired resources then click "next" button) <br /></message>
 1298:     <resource variable="RESOURCES" multichoice="1" toponly='1' addstatus="1">
 1299:       <nextstate>PAGESIZE</nextstate>
 1300:       <filterfunc>return $isProblem</filterfunc>
 1301:       <mapurl evaluate='1'>return $helper->{VARS}->{'SEQUENCE'};</mapurl>
 1302:       <valuefunc>return $symbFilter;</valuefunc>
 1303:       </resource>
 1304:     </state>
 1305: CHOOSE_FROM_ANY_SEQUENCE
 1306: }
 1307: 
 1308:     # Generate the first state, to select which resources get printed.
 1309:     Apache::lonhelper::state->new("START", "Select Printing Options:");
 1310:     $paramHash = Apache::lonhelper::getParamHash();
 1311:     $paramHash->{MESSAGE_TEXT} = "";
 1312:     Apache::lonhelper::message->new();
 1313:     $paramHash = Apache::lonhelper::getParamHash();
 1314:     $paramHash->{'variable'} = 'PRINT_TYPE';
 1315:     $helper->declareVar('PRINT_TYPE');
 1316:     $paramHash->{CHOICES} = $printChoices;
 1317:     Apache::lonhelper::choices->new();
 1318: 
 1319:     my $startedTable = 0; # have we started an HTML table yet? (need
 1320:                           # to close it later)
 1321: 
 1322:     if (($ENV{'request.role.adv'} and &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) or 
 1323: 	($helper->{VARS}->{'construction'} eq '1')) {
 1324: 	addMessage("<hr width='33%' /><table><tr><td align='right'>Print With Answers:</td><td>");
 1325:         $paramHash = Apache::lonhelper::getParamHash();
 1326: 	$paramHash->{'variable'} = 'ANSWER_TYPE';   
 1327: 	$helper->declareVar('ANSWER_TYPE');         
 1328:         $paramHash->{CHOICES} = [
 1329:                                    ['No', 'yes'],
 1330:                                    ['Yes', 'no'] ];
 1331:         Apache::lonhelper::dropdown->new();
 1332: 	addMessage("</td></tr>");
 1333: 	$startedTable = 1;
 1334:     }
 1335: 
 1336:     if ($ENV{'request.role.adv'}) {
 1337: 	if (!$startedTable) {
 1338: 	    addMessage("<hr width='33%' /><table><tr><td align='right'>LaTeX mode: </td><td>");
 1339: 	    $startedTable = 1;
 1340: 	} else {
 1341: 	    addMessage("<tr><td align='right'>LaTeX mode: </td><td>");
 1342: 	}
 1343:         $paramHash = Apache::lonhelper::getParamHash();
 1344: 	$paramHash->{'variable'} = 'LATEX_TYPE';   
 1345: 	$helper->declareVar('LATEX_TYPE');  
 1346: 	if ($helper->{VARS}->{'construction'} eq '1') {       
 1347: 	    $paramHash->{CHOICES} = [
 1348: 				     ['standard LaTeX mode', 'standard'], 
 1349: 				     ['LaTeX batchmode', 'batchmode'], ];
 1350: 	} else {
 1351: 	    $paramHash->{CHOICES} = [
 1352: 				     ['LaTeX batchmode', 'batchmode'],
 1353: 				     ['standard LaTeX mode', 'standard'] ];
 1354: 	}
 1355:         Apache::lonhelper::dropdown->new();
 1356:  
 1357: 	addMessage("</td></tr><tr><td align='right'>Print Table of Contents: </td><td>");
 1358:         $paramHash = Apache::lonhelper::getParamHash();
 1359: 	$paramHash->{'variable'} = 'TABLE_CONTENTS';   
 1360: 	$helper->declareVar('TABLE_CONTENTS');         
 1361:         $paramHash->{CHOICES} = [
 1362:                                    ['No', 'no'],
 1363:                                    ['Yes', 'yes'] ];
 1364:         Apache::lonhelper::dropdown->new();
 1365: 	addMessage("</td></tr>");
 1366:         
 1367: 	if (not $helper->{VARS}->{'construction'}) {
 1368: 	    addMessage("<tr><td align='right'>Print Index: </td><td>");
 1369: 	    $paramHash = Apache::lonhelper::getParamHash();
 1370: 	    $paramHash->{'variable'} = 'TABLE_INDEX';   
 1371: 	    $helper->declareVar('TABLE_INDEX');         
 1372: 	    $paramHash->{CHOICES} = [
 1373: 				     ['No', 'no'],
 1374: 				     ['Yes', 'yes'] ];
 1375: 	    Apache::lonhelper::dropdown->new();
 1376: 	    addMessage("</td></tr>");
 1377: 	}
 1378: 
 1379: 	if ($helper->{VARS}->{'construction'}) {
 1380: 	    addMessage("<tr><td align='right'>Print With URL: </td><td>");
 1381: 	    $paramHash = Apache::lonhelper::getParamHash();
 1382: 	    $paramHash->{'variable'} = 'CONSTR_RESOURSE_URL';   
 1383: 	    $helper->declareVar('CONSTR_RESOURSE_URL');         
 1384: 	    $paramHash->{CHOICES} = [
 1385: 				     ['No', 'no'],
 1386: 				     ['Yes', 'yes'] ];
 1387: 	    Apache::lonhelper::dropdown->new();
 1388: 	    addMessage("</td></tr>");
 1389: 	}
 1390: 	if ($helper->{'VARS'}->{'construction'}) { 
 1391: 	    my $xmlfrag .= <<'RNDSEED';
 1392: 	    <message><tr><td align='right'>Use random seed: </td><td></message>
 1393: 	    <string variable="curseed" size="15" maxlength="15">
 1394: 		<defaultvalue>
 1395: 	            return $helper->{VARS}->{'curseed'};
 1396: 	        </defaultvalue>
 1397: 	     </string>
 1398:              <message></td></tr></message>
 1399: RNDSEED
 1400:             &Apache::lonxml::xmlparse($r, 'helper', $xmlfrag);
 1401: 	}
 1402:     }
 1403: 
 1404:     if ($startedTable) {
 1405: 	addMessage("</table>");
 1406:     }
 1407: 
 1408:     Apache::lonprintout::page_format_state->new("FORMAT");
 1409: 
 1410:     # Generate the PAGESIZE state which will offer the user the margin
 1411:     # choices if they select one column
 1412:     Apache::lonhelper::state->new("PAGESIZE", "Set Margins");
 1413:     Apache::lonprintout::page_size_state->new('pagesize', 'FORMAT', 'FINAL');
 1414: 
 1415: 
 1416:     $helper->process();
 1417: 
 1418:     # MANUAL BAILOUT CONDITION:
 1419:     # If we're in the "final" state, bailout and return to handler
 1420:     if ($helper->{STATE} eq 'FINAL') {
 1421:         return $helper;
 1422:     }    
 1423: 
 1424:     $r->print($helper->display());
 1425: 
 1426:     Apache::lonhelper::unregisterHelperTags();
 1427: 
 1428:     untie %hash;
 1429: 
 1430:     return OK;
 1431: }
 1432: 
 1433: 
 1434: 1;
 1435: 
 1436: package Apache::lonprintout::page_format_state;
 1437: 
 1438: =pod
 1439: 
 1440: =head1 Helper element: page_format_state
 1441: 
 1442: See lonhelper.pm documentation for discussion of the helper framework.
 1443: 
 1444: Apache::lonprintout::page_format_state is an element that gives the 
 1445: user an opportunity to select the page layout they wish to print 
 1446: with: Number of columns, portrait/landscape, and paper size. If you 
 1447: want to change the paper size choices, change the @paperSize array 
 1448: contents in this package.
 1449: 
 1450: page_format_state is always directly invoked in lonprintout.pm, so there
 1451: is no tag interface. You actually pass parameters to the constructor.
 1452: 
 1453: =over 4
 1454: 
 1455: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 1456: 
 1457: =back
 1458: 
 1459: =cut
 1460: 
 1461: use Apache::lonhelper;
 1462: 
 1463: no strict;
 1464: @ISA = ("Apache::lonhelper::element");
 1465: use strict;
 1466: 
 1467: my $maxColumns = 2;
 1468: my @paperSize = ("Letter [8 1/2x11 in]", "Legal [8 1/2x14 in]", 
 1469:                  "Ledger/Tabloid [11x17 in]", "Executive [7 1/2x10 in]",
 1470:                  "A2 [420x594 mm]", "A3 [297x420 mm]", "A4 [210x297 mm]", 
 1471:                  "A5 [148x210 mm]", "A6 [105x148 mm]" );
 1472: 
 1473: # Tentative format: Orientation (L = Landscape, P = portrait) | Colnum |
 1474: #                   Paper type
 1475: 
 1476: sub new { 
 1477:     my $self = Apache::lonhelper::element->new();
 1478: 
 1479:     shift;
 1480: 
 1481:     $self->{'variable'} = shift;
 1482:     my $helper = Apache::lonhelper::getHelper();
 1483:     $helper->declareVar($self->{'variable'});
 1484:     bless($self);
 1485:     return $self;
 1486: }
 1487: 
 1488: sub render {
 1489:     my $self = shift;
 1490:     my $helper = Apache::lonhelper::getHelper();
 1491:     my $result = '';
 1492:     my $var = $self->{'variable'};
 1493: 
 1494:     $result .= <<STATEHTML;
 1495: 
 1496: <hr width="33%" />
 1497: <table cellpadding="3">
 1498:   <tr>
 1499:     <td align="center"><b>Page layout</b></td>
 1500:     <td align="center"><b>Number of columns</b></td>
 1501:     <td align="center"><b>Paper type</b></td>
 1502:   </tr>
 1503:   <tr>
 1504:     <td>
 1505:       <input type="radio" name="${var}.layout" value="L" /> Landscape<br />
 1506:       <input type="radio" name="${var}.layout" value="P" checked='1'  /> Portrait
 1507:     </td>
 1508:     <td align="center">
 1509:       <select name="${var}.cols">
 1510: STATEHTML
 1511: 
 1512:     my $i;
 1513:     for ($i = 1; $i <= $maxColumns; $i++) {
 1514:         if ($i == 2) {
 1515:             $result .= "<option value='$i' selected>$i</option>\n";
 1516:         } else {
 1517:             $result .= "<option value='$i'>$i</option>\n";
 1518:         }
 1519:     }
 1520: 
 1521:     $result .= "</select></td><td>\n";
 1522:     $result .= "<select name='${var}.paper'>\n";
 1523: 
 1524:     $i = 0;
 1525:     foreach (@paperSize) {
 1526:         if ($i == 0) {
 1527:             $result .= "<option selected value='$i'>" . $paperSize[$i] . "</option>\n";
 1528:         } else {
 1529:             $result .= "<option value='$i'>" . $paperSize[$i] . "</option>\n";
 1530:         }
 1531:         $i++;
 1532:     }
 1533: 
 1534:     $result .= "</select></td></tr></table>";
 1535:     return $result;
 1536: }
 1537: 
 1538: sub postprocess {
 1539:     my $self = shift;
 1540: 
 1541:     my $var = $self->{'variable'};
 1542:     my $helper = Apache::lonhelper->getHelper();
 1543:     $helper->{VARS}->{$var} = 
 1544:         $ENV{"form.$var.layout"} . '|' . $ENV{"form.$var.cols"} . '|' .
 1545:         $ENV{"form.$var.paper"};
 1546:     return 1;
 1547: }
 1548: 
 1549: 1;
 1550: 
 1551: package Apache::lonprintout::page_size_state;
 1552: 
 1553: =pod
 1554: 
 1555: =head1 Helper element: page_size_state
 1556: 
 1557: See lonhelper.pm documentation for discussion of the helper framework.
 1558: 
 1559: Apache::lonprintout::page_size_state is an element that gives the 
 1560: user the opportunity to further refine the page settings if they
 1561: select a single-column page.
 1562: 
 1563: page_size_state is always directly invoked in lonprintout.pm, so there
 1564: is no tag interface. You actually pass parameters to the constructor.
 1565: 
 1566: =over 4
 1567: 
 1568: =item * B<new>(varName): varName is where the print information will be stored in the format FIXME.
 1569: 
 1570: =back
 1571: 
 1572: =cut
 1573: 
 1574: use Apache::lonhelper;
 1575: 
 1576: no strict;
 1577: @ISA = ("Apache::lonhelper::element");
 1578: use strict;
 1579: 
 1580: 
 1581: 
 1582: sub new { 
 1583:     my $self = Apache::lonhelper::element->new();
 1584: 
 1585:     shift; # disturbs me (probably prevents subclassing) but works (drops
 1586:            # package descriptor)... - Jeremy
 1587: 
 1588:     $self->{'variable'} = shift;
 1589:     my $helper = Apache::lonhelper::getHelper();
 1590:     $helper->declareVar($self->{'variable'});
 1591: 
 1592:     # The variable name of the format element, so we can look into 
 1593:     # $helper->{VARS} to figure out whether the columns are one or two
 1594:     $self->{'formatvar'} = shift;
 1595: 
 1596:     # The state to transition to after selection, or after discovering
 1597:     # the cols are not set to 1
 1598:     $self->{NEXTSTATE} = shift;
 1599:     bless($self);
 1600:     return $self;
 1601: }
 1602: 
 1603: sub render {
 1604:     my $self = shift;
 1605:     my $helper = Apache::lonhelper::getHelper();
 1606:     my $result = '';
 1607:     my $var = $self->{'variable'};
 1608: 
 1609:     if (defined $self->{ERROR_MSG}) {
 1610:         $result .= '<br /><font color="#FF0000">' . $self->{ERROR_MSG} . '</font><br />';
 1611:     }
 1612: 
 1613:     $result .= <<ELEMENTHTML;
 1614: 
 1615: <p>How should the column be formatted?</p>
 1616: 
 1617: <table cellpadding='3'>
 1618:   <tr>
 1619:     <td align='right'><b>Width</b>:</td>
 1620:     <td align='left'><input type='text' name='$var.width' value='18' size='4'></td>
 1621:     <td align='left'>
 1622:       <select name='$var.widthunit'>
 1623:         <option>cm</option><option>in</option>
 1624:       </select>
 1625:     </td>
 1626:   </tr>
 1627:   <tr>
 1628:     <td align='right'><b>Height</b>:</td>
 1629:     <td align='left'><input type='text' name="$var.height" value="25.9" size='4'></td>
 1630:     <td align='left'>
 1631:       <select name='$var.heightunit'>
 1632:         <option>cm</option><option>in</option>
 1633:       </select>
 1634:     </td>
 1635:   </tr>
 1636:   <tr>
 1637:     <td align='right'><b>Left margin</b>:</td>
 1638:     <td align='left'><input type='text' name='$var.lmargin' value='-1.5' size='4'></td>
 1639:     <td align='left'>
 1640:       <select name='$var.lmarginunit'>
 1641:         <option>cm</option><option>in</option>
 1642:       </select>
 1643:     </td>
 1644:   </tr>
 1645: </table>
 1646: 
 1647: <p>Hint: Some instructors like to leave scratch space for the student by
 1648: making the width much smaller then the width of the page.</p>
 1649: 
 1650: ELEMENTHTML
 1651: 
 1652:     return $result;
 1653: }
 1654: 
 1655: # If the user didn't select 1 column, skip this state.
 1656: sub preprocess {
 1657:     my $self = shift;
 1658:     my $helper = Apache::lonhelper::getHelper();
 1659: 
 1660:     my $format = $helper->{VARS}->{$self->{'formatvar'}};
 1661:     if (substr($format, 2, 1) ne '1') {
 1662:         $helper->changeState($self->{NEXTSTATE});
 1663:     }
 1664:    
 1665:     return 1;
 1666: }
 1667: 
 1668: sub postprocess {
 1669:     my $self = shift;
 1670: 
 1671:     my $var = $self->{'variable'};
 1672:     my $helper = Apache::lonhelper->getHelper();
 1673:     my $width = $helper->{VARS}->{$var .'.width'} = $ENV{"form.${var}.width"}; 
 1674:     my $height = $helper->{VARS}->{$var .'.height'} = $ENV{"form.${var}.height"}; 
 1675:     my $lmargin = $helper->{VARS}->{$var .'.lmargin'} = $ENV{"form.${var}.lmargin"}; 
 1676:     $helper->{VARS}->{$var .'.widthunit'} = $ENV{"form.${var}.widthunit"}; 
 1677:     $helper->{VARS}->{$var .'.heightunit'} = $ENV{"form.${var}.heightunit"}; 
 1678:     $helper->{VARS}->{$var .'.lmarginunit'} = $ENV{"form.${var}.lmarginunit"}; 
 1679: 
 1680:     my $error = '';
 1681: 
 1682:     # /^-?[0-9]+(\.[0-9]*)?$/ -> optional minus, at least on digit, followed 
 1683:     # by an optional period, followed by digits, ending the string
 1684: 
 1685:     if ($width !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 1686:         $error .= "Invalid width; please type only a number.<br />\n";
 1687:     }
 1688:     if ($height !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 1689:         $error .= "Invalid height; please type only a number.<br />\n";
 1690:     }
 1691:     if ($lmargin !~  /^-?[0-9]+(\.[0-9]*)?$/) {
 1692:         $error .= "Invalid left margin; please type only a number.<br />\n";
 1693:     }
 1694: 
 1695:     if (!$error) {
 1696:         Apache::lonhelper::getHelper()->changeState($self->{NEXTSTATE});
 1697:         return 1;
 1698:     } else {
 1699:         $self->{ERROR_MSG} = $error;
 1700:         return 0;
 1701:     }
 1702: }
 1703: 
 1704: 
 1705: 
 1706: __END__
 1707: 

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