1: #!/usr/bin/perl
2: # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
3: #
4: # $Id: printout.pl,v 1.177 2024/11/09 16:08:15 raeburn 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:
29: use lib '/home/httpd/lib/perl';
30: use LONCAPA::loncgi;
31: use File::Path;
32: use File::Basename;
33: use File::Copy;
34: use IO::File;
35: use Image::Magick;
36: use Apache::lonhtmlcommon();
37: use Apache::lonnet;
38: use Apache::loncommon();
39: use Apache::lonlocal;
40: use Apache::lonmsg();
41: use LONCAPA::Enrollment;
42: use LONCAPA::Configuration;
43: use LONCAPA;
44: use Archive::Zip qw( :ERROR_CODES );
45:
46: use strict;
47:
48: my $busy_wait_timeout = 30;
49: my $pdfs_converted = 0; # non zero if PDF includes (need to fixps).
50:
51: my $debugging = 0;
52:
53: sub debug {
54: if ($debugging) {
55: my ($text) = @_;
56: print "$text <br />\n";
57: }
58: }
59:
60: # Determine if a user is operating as a student for this course/domain.
61: #Parameters:
62: # none
63: #Implicit:
64: # $env{request.role} contains the role under which this user operated this
65: # this request.
66: sub is_student {
67: return ($env{'request.role'}=~/^st\./);
68: }
69:
70: #
71: # Debugging: Dump the environment for debugging.
72: #
73: sub dumpenv {
74: print "<br />-------------------<br />";
75: foreach my $key (sort (keys %env)) {
76: print "<br />$key -> $env{$key}";
77: }
78: print "<br />-------------------<br />";
79: }
80:
81: #
82: # This sub sends a message to the appropriate person if there was an error
83: # rendering the latex At present, there's only one case to consider:
84: # a student printing inside a course results in messages to the course coordinator.
85: #Parmaeters:
86: # identifier - The unique identifier of this cgi request.
87: # badresource- Filepath to most likely failing
88: # logfile - The contents of the log file (included in the message).
89: # texfile - reference to an array containing the LaTeX input file
90: # (included in the message).
91: #Implicit inputs:
92: # From the environment:
93: # cgi.$identifier.user - User doing the printing.
94: # cgi.$identifier.domain - Domain the user is logged in on with printing.
95: # cgi.$identifier.courseid - Id of the course (if this is a course).
96: # cgi.$identifier.coursedom- Domain in which course was constituted.
97: # cgi.$identifier.resources - List of resource URL's for which the print
98: # was attempted.
99: #
100: sub send_error_mail {
101: my ($identifier, $badresource, $logfile, $texfile) = @_;
102: my $user = $env{"cgi.$identifier.user"};
103: my $domain = $env{"cgi.$identifier.domain"};
104: my $courseid = $env{"cgi.$identifier.courseid"};
105: my $coursedom= $env{"cgi.$identifier.coursedom"};
106: my $resources= $env{"cgi.$identifier.resources"};
107:
108: # resource file->URL
109: #
110: my $badurl = &Apache::lonnet::declutter($badresource);
111:
112: # &dumpenv();
113:
114:
115:
116: # Only continue if there is a user, domain, courseid, course domain
117: # and resources:
118:
119: if(defined($user) && defined($domain) && defined($courseid) &&
120: defined($coursedom) && defined($resources) ){
121:
122: # Only mail if the conditions are ripe for it:
123: # The user is a student in the course:
124: #
125:
126: if (&is_student()) {
127: # build the subject and message body:
128: &debug("sending message to course coordinators.");
129:
130: # Todo: Convert badurl into a url from file path:
131:
132: my $subject = "Error [$badurl] Print failed for $user".':'.$domain;
133: my $message .= "Print failed to render LaTeX for $user".':'."$domain\n";
134: $message .= " User was attempting to print: \n";
135: foreach my $resource (split(/:/,$resources)) {
136: $message .= " $resource\n";
137: }
138: $message .= "--------------------LaTeX logfile:------------ \n";
139: $message .= $logfile;
140: $message .= "-----------------LaTeX source file: ------------\n";
141:
142: foreach my $line (@$texfile) {
143: $message .= "$line\n";
144: }
145: my (undef, %receivers) = &Apache::lonmsg::decide_receiver(undef, 0,
146: 1,1,1);
147: &debug("sending...section: $env{'request.course.sec'}");
148: foreach my $dest (keys %receivers) {
149: &debug("dest is $dest");
150: my @destinfo = split(/:/,$dest);
151: my $user = $destinfo[0];
152: my $dom = $destinfo[1];
153:
154: &Apache::lonmsg::user_normal_msg($user, $dom,
155: $subject, $message);
156:
157: # No point in looking at the return status as there's no good
158: # error action I can think of right now (log maybe?).
159: }
160: }
161: }
162: }
163:
164: sub get_pstops_offsets {
165: my ($paper) = @_;
166: my ($origwidth,$origheight,$origunits,$ptype,$xoff,$yoffl,$yoffr);
167: $ptype = "-p$paper";
168: if ($paper eq 'letter') {
169: $origwidth = 11.0;
170: $origheight = 8.5;
171: $origunits = 'in';
172: $xoff = $origheight - 0.9;
173: $yoffl = 0.0;
174: } elsif ($paper eq 'legal') {
175: $ptype = '';
176: $origwidth = 14.0;
177: $origheight = 8.5;
178: $origunits = 'in';
179: $xoff = $origheight - 3.0;
180: $yoffl = 0.5;
181: } elsif ($paper eq 'a4') {
182: $origwidth = 29.7;
183: $origheight = 21.0;
184: $origunits = 'cm';
185: $xoff = $origheight;
186: $yoffl = 0.7;
187: }
188: if (($origwidth ne '') && ($yoffl ne '')) {
189: $yoffr = $origwidth/2 + $yoffl;
190: }
191: return ($ptype,$xoff,$yoffl,$yoffr,$origunits);
192: }
193:
194: $|=1;
195: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
196: print <<END;
197: Content-type: text/html
198:
199: <html>
200: <head><title>Bad Cookie</title></head>
201: <body>
202: Your cookie information is incorrect.
203: </body>
204: </html>
205: END
206: exit;
207: }
208:
209: my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
210: &Apache::lonlocal::get_language_handle();
211: &Apache::loncommon::content_type(undef,'text/html');
212: $env{'request.noversionuri'} = '/cgi-bin/printout.pl';
213: # Breadcrumbs
214: #FIXME: Choose better/different breadcrumbs?!? Links?
215: my $brcrum = [{'href' => '',
216: 'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
217: {'href' => '',
218: 'text' => 'Preparing Printout'},
219: {'href' => '',
220: 'text' => 'Creating PDF'}];
221: print(&Apache::loncommon::start_page('Creating PDF',
222: undef,
223: {'bread_crumbs' => $brcrum,}));
224:
225: my $identifier = $ENV{'QUERY_STRING'};
226: my $texfile = $env{'cgi.'.$identifier.'.file'};
227: my $laystyle = $env{'cgi.'.$identifier.'.layout'};
228: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
229: my $paper = $env{'cgi.'.$identifier.'.paper'};
230: my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
231: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
232: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
233: my $advanced_role = $env{'cgi.'.$identifier.'.role'};
234: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
235: my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
236: my $backref = &unescape($env{'cgi.'.$identifier.'.backref'});
237:
238:
239: my @names_pack=();
240: if ($student_names=~/_END_/) {
241: @names_pack=split(/_ENDPERSON_/,$student_names);
242: }
243: if ($backref) {
244: if ($backref =~ m{^(/uploaded/$LONCAPA::match_domain/$LONCAPA::match_courseid/default_\d+.page)}) {
245: $backref = $1;
246: }
247: print('<p>'.&mt("[_1]Return[_2] to resource.",
248: "<a href=\"$backref\"><b>","</b></a>").'</p>');
249: print('<p><a href="javascript:gopost(\'/adm/printout\',\''.$backref.'\');">'.
250: &mt("Change Printing Options").'</a></p>'."\n");
251: }
252: my $figfile = $texfile;
253: $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/;
254: my $duefile = $texfile;
255: $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/;
256:
257:
258: #-------------------------------------------------------------------------------------
259: #
260: # Each print may have associated with it a file that contains a set of figures
261: # that need to be converted to .eps from whatever form they were in when included
262: # in the resource. The name of the figure file is in $figfile. If it exists,
263: # it contains the names of the files that need to be converted, one per line.
264: #
265:
266: &debug("Figure file is $figfile");
267:
268: if (-e $figfile) {
269: &debug( "Figure file exists");
270: &debug("$figfile exists");
271: my %done_conversion;
272: my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
273: my @content_of_file = <$temporary_file>;
274: close $temporary_file;
275: my $noteps;
276: my %prog_state;
277: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$#content_of_file); }
278: print('<br />');
279: foreach my $not_eps (@content_of_file) {
280: chomp($not_eps);
281: &debug( "Being asked to convert $not_eps");
282: if ($not_eps ne '') {
283: $not_eps=~s|\/\.\/|\/|g;
284: if (!$done_conversion{$not_eps}) { # Only convert multiple includes once.
285: &convert_figure($not_eps);
286: $done_conversion{$not_eps} = 1;
287: }
288: }
289: }
290: if ($advanced_role) {
291: &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
292: }
293: unlink($figfile);
294: }
295: # End of figure conversion section:
296: #
297: #--------------------------------------------------------------------------------------------
298: #
299: # Figure out which Tex files we need to process. If this is a large class e.g.
300: # the instructor may have asked that the printout be by section, one section per file
301: # in that case, the output tex fiels will be the base filename with 3 digit serial numbers
302: # just prior to the .tex file type.
303: # By the time this loop exits, @texfile is an array of the files to process.
304: #
305:
306: my @texfile=($texfile);
307: if ($number_of_files>1) {
308: @texfile=();
309: for (my $i=1;$i<=$number_of_files;$i++) {
310: my $new_texfile=$texfile;
311: $new_texfile=~s/\.tex//;
312: $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
313: push @texfile,$new_texfile;
314: }
315: }
316:
317: #--------------------------------------------------------------------------------------------
318:
319: my $ind=-1;
320:
321: my %prog_state;
322: if ($advanced_role) {
323: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$number_of_files);
324: }
325: print "<br />";
326: my $num_files = @texfile; # How does this differ from $number_of_files , can that be 0?
327:
328:
329:
330:
331: foreach $texfile (@texfile) {
332: my $status_statement='';
333: my $link_text='download PDF';
334: $ind++;
335:
336: #---------------------------------------------------------------------------------------
337: # This chunk of code
338: # determines the status message for the printout, and the download link text.
339: # If the print is for one or more students, both will contain the range of students
340: # covered by this file.
341: #
342:
343: my @stud_info=split(/_END_/,$names_pack[$ind]);
344: my @tempo_array=split(/:/,$stud_info[0]); # username:domain:section:full name:...
345: my $name;
346: my $name_range='';
347:
348: # $name -> Either user's full name or username:domain
349: # $name_range -> Either user's last name or username.
350:
351: if ($tempo_array[3]) {
352: $name=$tempo_array[3];
353: $name =~ s{^\s+|\s+$}{}g;
354: if ($name =~ /,/) {
355: ($name_range) = split(/,/,$name, 2);
356: } elsif ($name =~ /\s/) {
357: $name_range = $name;
358: $name_range =~ s/\s+/_/;
359: } else {
360: $name_range = $name;
361: }
362: $name_range =~ s/[^\w\:\-]+//g;
363: } else {
364: $name=$tempo_array[0].':'.$tempo_array[1];
365: $name_range = $tempo_array[0];
366: }
367:
368: # If there truly is a name add it to the status text so we know which
369: # user is getting printed.
370: #
371:
372: if (($name ne "") && ($name ne ':') ) { # Could be printing codes...
373: $link_text='<b>'.$name.'</b>';
374: $status_statement.=$name;
375: }
376:
377: # Group of students being printed...
378: # $name_range -> first student's name - last student's name
379: #
380:
381: if ($#stud_info>0) {
382: @tempo_array=split(/:/,$stud_info[-1]);
383: if ($tempo_array[3]) {
384: $name=$tempo_array[3];
385: $name =~ s{^\s+|\s+$}{}g;
386: my $lastname;
387: if ($name =~ /,/) {
388: ($lastname) = split(/,/, $name,2);
389: } elsif ($name =~ /\s/) {
390: $lastname = $name;
391: $lastname =~ s/\s+/_/;
392: } else {
393: $lastname = $name;
394: }
395: $name_range .= "-".$lastname;
396: $name_range =~ s/[^\w\:\-]+//g;
397: } else {
398: $name=$tempo_array[0].':'.$tempo_array[1];
399: $name_range .= '-'.$tempo_array[0];
400: }
401: if (($name ne "") && ($name ne ':')) {
402: $link_text.=' - <b>'.$name.'</b>';
403: $status_statement.=' - '.$name;
404:
405: }
406: }
407:
408: # $name_range is the range of names in this file.
409: # $name is the first of the names in this file.
410: #
411: #-----------------------------------------------------------------------
412:
413: # If the number of files is > 1, but we don't have multiple
414: # student names, we must be printing an exam from codes.
415: # The download link becomes the filename (basename.tex
416: # The status info has the basename appended to it.
417: #
418: if(($num_files > 1) && ($link_text eq 'download PDF')) {
419: $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
420: $status_statement .= basename($texfile);
421: }
422:
423:
424: #------------------------------------------------------------------------
425:
426: $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
427:
428:
429: print "<br/>";
430: if ($advanced_role) {
431: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Creating PDF for: [_1]',$status_statement));
432: }
433:
434: if (-e $texfile) { # Ensure the tex file exists:
435:
436: #---------------------------------------------------------------------
437: #
438: # Put username ranges into the original tex
439: # Tex filename from which they'll propagate into the other filenames as well.
440: #
441:
442: if (($name_range ne '') && ($num_files > 1)) {
443: my $newtexfile = $texfile;
444: $newtexfile =~ s/\.tex/$name_range\.tex/;
445: rename($texfile, $newtexfile);
446: $texfile = $newtexfile;
447: }
448:
449: #---------------------------------------------------------------------
450:
451: $texfile =~ m/^(.*)\/([^\/]+)$/;
452: my $name_file = $2;
453: my $path_file = $1.'/';
454: chdir $path_file;
455: my $dvi_file= $name_file; $dvi_file =~ s/\.tex$/\.dvi/;
456: &make_dvi_file($name_file,
457: $dvi_file,
458: $tableofcontents,
459: $tableofindex,
460: $status_statement,
461: \%prog_state,
462: $busy_wait_timeout);
463:
464:
465: #Do we have a latex error in the log file?
466:
467:
468: my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
469:
470:
471: if (&analyze_logfile($logfilename, $texfile, $advanced_role)) {
472:
473:
474: #LaTeX successfully parsed tex file
475: $name_file =~ s/\.tex/\.dvi/;
476: my $new_name_file = $name_file;
477: $new_name_file =~ s/\.dvi/\.ps/;
478: # Explicitly include a switch for papertype, otherwise dvips will default
479: # to whatever is listed first in config.ps (which in most cases is a4).
480: my $papera;
481: unless (($paper eq '') ||
482: (($laystyle eq 'album') && ($numberofcolumns eq '1'))) {
483: $papera='-t'.$paper;
484: }
485: my $extra_ps_header = $perlvar{'lonLib'} .'/includepsheader.ps';
486: my $comma = "dvips $papera -h $extra_ps_header -Ppdf -G0 -o $new_name_file";
487: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
488: "for $status_statement now Converting to PS",
489: \%prog_state,$new_name_file);
490: #
491: # One last little hinky kinky thing.
492: # It's just possible that some fonts could not be maded
493: # at the resolution of the pdf print driver.
494: # In that case a file called missfont.log will have been
495: # created that will contain the commands that were attempted
496: # to create the missing fonts. If we basically
497: # take all the 8000 strings in that file, and
498: # replace them with 600 (the ljfour resolution)
499: # run the commands in that file and redvips,
500: # we'll be able to print the missing glyphs at 600dpi.
501: #
502: # Supposedly it is possible to tune TeX/Metafont to do this
503: # right but I failed to get that to work when following the
504: # docs at the tug site, hence this rather kludgey fix.
505: #
506:
507: my $print_directory = dirname($name_file);
508: my $missfonts_file = $print_directory."/missfont.log";
509: #print("<br /> Missing fonts file is: $missfonts_file");
510: if (-e $missfonts_file) {
511: #print("<br />Missing fonts file exists\n");
512: &create_missing_fonts($missfonts_file,\%prog_state);
513: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
514: "for $status_statement dvips generated missing fonts",
515: \%prog_state, $new_name_file);
516: }
517: if (-e $new_name_file) {
518: my $latex_file = $name_file;
519: $latex_file =~ s/\.dvi/\.tex/;
520: &repaginate($new_name_file, $latex_file, $numberofcolumns);
521:
522: &make_dvi_file($latex_file,
523: $name_file,
524: $tableofcontents,
525: $tableofindex,
526: $status_statement,
527: \%prog_state,
528: $busy_wait_timeout);
529:
530:
531: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
532: "for $status_statement dvips to repaginate",
533: \%prog_state, $new_name_file);
534:
535: print "<br />";
536: $new_name_file =~ m/^(.*)\./;
537: my $ps_file = my $tempo_file = $1.'temporar.ps';
538: my $pdf_file = $1.'.pdf';
539: unless ($paper eq '') {
540: $papera='-p'.$paper;
541: }
542: #----
543: # The code below uses fixps to make pdf include in sequences work.
544: #
545: # $comma = "fixps --force $new_name_file";
546: # &debug("FIXPS command: $comma");
547: # &busy_wait_command("$comma 1>$tempo_file 2>/dev/null",
548: # "for $status_statement now validating PS",
549: # \%prog_state,$tempo_file);
550:
551: #---
552: # The code below uses gs to make pdf includes in sequences work
553:
554: # Use gs to fix the postscript -> level 1.5
555: # .. if pdfs were included
556: #
557: # pswrite device was removed from ghostscript 9.09 and later,
558: # (ps2write device is used instead).
559: # check which device is available, and use as the value
560: # passed via -sDEVICE= arg in gs call to fix the postscript.
561: #
562:
563: if ($pdfs_converted > 0) {
564: my @possdevices = qw(ps2write pswrite);
565: my $device;
566: foreach my $poss (@possdevices) {
567: if (open(PIPE,"gs -h |grep ' $poss ' 2>&1 |")) {
568: my $output = <PIPE>;
569: close(PIPE);
570: chomp($output);
571: if ($output =~ /\Q $poss \E/) {
572: $device = $poss;
573: }
574: }
575: last if ($device ne '');
576: }
577: if ($device ne '') {
578: my ($major,$minor);
579: if (open(PIPE,"gs -v |grep 'GPL Ghostscript' 2>&1 |")) {
580: my $info = <PIPE>;
581: close(PIPE);
582: chomp($info);
583: if ($info =~ /Ghostscript\s+(\d+)\.(\d+)/) {
584: ($major,$minor) = ($1,$2);
585: }
586: }
587: $comma = "gs -sDEVICE=$device -dLanguageLevel=1.5 ";
588: if (($major > 9) || (($major == 9) && ($minor >= 50))) {
589: $comma .= '--permit-file-read=* ';
590: }
591: &busy_wait_command("$comma -o $tempo_file $new_name_file 2>/dev/null 1>/dev/null",
592: "for $status_statement now validating PS",
593: \%prog_state, $tempo_file);
594:
595: #---
596: if (-e $tempo_file) {
597: &busy_wait_command("mv $tempo_file $new_name_file",
598: 'File move', \%prog_state, $new_name_file);
599: }
600: }
601: }
602: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
603: my $canscale;
604: if (open(PIPE,"psnup --version 2>&1 |")) {
605: while (<PIPE>) {
606: chomp();
607: next if (/pstops:\s+invalid\s+option/);
608: if (/^psnup\s+release\s+(\d+)\s+patchlevel\s+(\d+)/) {
609: if (($1 == 1) && ($2 < 90)) {
610: $canscale = 1;
611: }
612: last;
613: } elsif (/^psnup\s+(\d+)\.(\d+)/) {
614: if (($1 == 1) && ($2 < 90)) {
615: $canscale = 1;
616: }
617: last;
618: }
619: }
620: close(PIPE);
621: }
622: if ($canscale) {
623: $comma = "psnup $papera -2 -s1.0 $new_name_file";
624: &debug("PSNUP command: $comma");
625: } elsif (($paper eq 'letter') || ($paper eq 'legal') || ($paper eq 'a4')) {
626: my ($ptype,$xoff,$yoffl,$yoffr,$units) = &get_pstops_offsets($paper);
627: $comma = "pstops $ptype '2:0L\@1.0($xoff$units,$yoffl$units)+1L\@1.0($xoff$units,$yoffr$units)' $new_name_file";
628: &debug("PSTOPS command: $comma");
629: } else {
630: $comma = "psnup $papera -2 $new_name_file";
631: &debug("PSNUP command: $comma");
632: }
633: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
634: "for $status_statement now Modifying PS layout",
635: \%prog_state,$tempo_file);
636: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
637: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)" '.$new_name_file;
638: &debug("PSTOPS command: $comma ");
639: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
640: "for $status_statement now Modifying PS layout",
641: \%prog_state,$tempo_file);
642: } else {
643: $ps_file=$new_name_file;
644: }
645: my $addtoPSfile={'letter'=>'<< /PageSize [612 792] >> setpagedevice',
646: 'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
647: 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
648: 'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
649: 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
650: 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
651: 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
652: 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
653: 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
654: };
655: open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n";
656: my $new_ps_file='new'.$ps_file;
657: open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n";
658: print FFHS $addtoPSfile->{$paper}."\n";
659: while (<FFH>) {
660: print FFHS $_;
661: }
662: close(FFH);
663: close(FFHS);
664: $ps_file=$new_ps_file;
665: &busy_wait_command("ps2pdf13 $ps_file $pdf_file 1>/dev/null 2>/dev/null",
666: "for $status_statement now Converting PS to PDF",
667: \%prog_state,$pdf_file);
668:
669: my $texlog = $texfile;
670: my $texaux = $texfile;
671: my $texdvi = $texfile;
672: my $texps = $texfile;
673: $texlog =~ s/\.tex/\.log/;
674: $texaux =~ s/\.tex/\.aux/;
675: $texdvi =~ s/\.tex/\.dvi/;
676: $texps =~ s/\.tex/\.ps/;
677: my @garb = ($texlog,$texaux,$texdvi,$texps);
678: # unlink @garb;
679: unlink($duefile);
680: print
681: '<p>'
682: .&mt('[_1] - [_2]Your PDF file[_3] is ready for download.',
683: $link_text,'<a href="/prtspool/'.$pdf_file.'">','</a>')
684: .'</p>'."\n";
685: }
686: unlink($missfonts_file);
687:
688: }
689: } else {
690: print
691: '<p class="LC_error">'
692: .&mt('The LaTeX file [_1] was not created successfully.',
693: '<span class="LC_filename">'.$texfile.'</span>')
694: .'</p>';
695: }
696: }
697: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
698: print "<br />";
699: if ($number_of_files>1) {
700: print('<p>'.&mt('Zip Output:')."\n");
701: my %zip_prog_state;
702: if ($advanced_role) { %zip_prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$number_of_files); }
703: my $zipfile=$texfile[0];
704: $zipfile=~s/\.tex/\.zip/;
705: my $zip = Archive::Zip->new();
706: my $counter = 0;
707: foreach my $file (@texfile) {
708: $file=~s/\.tex/.\pdf/;
709: my $dest=$file;
710: $dest=~s{^\Q$perlvar{'lonPrtDir'}\E}{prtspool};
711: $zip->addFile($file,$dest);
712: $dest=~s/^prtspool//;
713: $counter ++;
714: if ($advanced_role) {
715: &Apache::lonhtmlcommon::Update_PrgWin('',\%zip_prog_state,
716: &mt('[_1] added to zip archive ([_2] of [_3]',
717: $dest,$counter,$number_of_files));
718: }
719: }
720: if ($advanced_role) {
721: &Apache::lonhtmlcommon::Update_PrgWin('',\%zip_prog_state,&mt('Writing zip file'));
722: }
723: if ($zip->writeToFileNamed($zipfile) == AZ_OK) {
724: $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
725: print
726: '<p>'
727: .&mt('A [_1]ZIP file[_2] of all the PDF files is ready for download.',
728: '<a href="'.$zipfile.'">','</a>')
729: .'</p>';
730: } else {
731: print '<p class="LC_error">'.
732: &mt('An error occurred creating a ZIP file of all the PDF files').
733: '</p>';
734: }
735: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%zip_prog_state); }
736: }
737: print(&Apache::loncommon::end_page());
738: my $done;
739:
740: sub REAPER {
741: $done=1;
742: }
743: #
744: # Execute a command updating the status window as the command's
745: # output file builds up (at intervals of a second).
746: #
747: # If the timeout argument defined, then if that many seconds
748: # elapses without an increase in the size of the output file,
749: # the command will be killed (this deals with the case when
750: # latex crawls into an infinite loop).
751: #
752: sub busy_wait_command {
753: my ($command,$message,$progress_win,$output_file, $timeout)=@_;
754:
755: $SIG{CHLD} = \&REAPER;
756: $done=0;
757: my $pid=open(CMD,"$command |");
758: if ($advanced_role) {
759: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
760: }
761: my $last_size = 0;
762: my $unchanged_time = 0;
763: while(!$done) {
764: sleep 1;
765: my $extra_msg;
766: if ($output_file) {
767: my $size=(stat($output_file))[7];
768: $extra_msg=", $size bytes generated";
769: if ($size == $last_size) {
770: $unchanged_time++;
771: if ($timeout && ($unchanged_time > $timeout)) {
772: print '<p class="LC_error">'.&mt('Operation timed out!')."</p>\n";
773: print "<p>Executing $command, the output file $output_file did not grow\n";
774: print "after $timeout seconds. This <em>may</em> indicate $command\n";
775: print "is in an infinite loop.\n";
776: print "See if printing fewer copies helps. Please contact LON-CAPA\n";
777: print "support about this in any event.";
778: print "</p>";
779: kill(9, $pid); # Reaper will do the rest...I hope there's errors in the log.
780: }
781: } else {
782: $last_size = $size;
783: $unchanged_time = 0;
784: }
785: }
786: if ($advanced_role) {
787: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message.$extra_msg);
788: }
789: }
790: $SIG{CHLD}='IGNORE';
791: close(CMD);
792: }
793:
794: # Make the dvi file (or rather try to), from the latex file and the
795: # various bits and pieces that control how the latex file is processed:
796: # LaTeX is run as many times a needed to make this all happen... this may
797: # result in several runs of LaTeX that just are errors if the LaTeX is
798: # bad, but the printing subsystem is _supposed_ to not do that.
799: #
800: # Parameters:
801: # name_file - Name of the LaTeX file to process.
802: # dvi_file - Name of resulting dvi file.
803: # tableofcontents - "yes" if we are supposed to make a table of contents.
804: # tableofindex - "yes" if we are suposed to make an index.
805: # status_statement - Part of the status statement for ths status window.
806: # prog_state - Reference to the program state hash.
807: # busy_wait_timeout- Seconds without any progress that imply a problem.
808: #
809: #
810: sub make_dvi_file {
811: my ($name_file,
812: $dvi_file,
813: $tableofcontents,
814: $tableofindex,
815: $status_statement,
816: $prog_state,
817: $busy_wait_timeout) = @_;
818:
819:
820: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
821: "for $status_statement now LaTeXing file",
822: $prog_state,$dvi_file, $busy_wait_timeout);
823:
824: # If the tableof contents was requested, we need to run
825: # LaTex a couple more times to get all the references sorted out.
826:
827: if ($tableofcontents eq 'yes') {
828: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
829: "for $status_statement First LaTeX of file for table of contents",
830: $prog_state,$dvi_file, $busy_wait_timeout);
831: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
832: "for $status_statement Second LaTeX of file for table of contents",
833: $prog_state,$dvi_file,$busy_wait_timeout);
834: }
835:
836: # And makeindex and another run of LaTeX to incorporate it if the index
837: # is enabled.
838:
839:
840: if ($tableofindex eq 'yes') {
841: my $idxname=$name_file;
842: $idxname=~s/\.tex$/\.idx/;
843: &busy_wait_command("makeindex $idxname",
844: "making index file",
845: $prog_state,$idxname);
846: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
847: "for $status_statement now LaTeXing file for index section",
848: $prog_state,$dvi_file, $busy_wait_timeout);
849: }
850:
851: }
852:
853:
854: # Repagninate
855: # What we need to do:
856: # - Count the number of pages in each student.
857: # - Rewrite the latex file replacing the \specials that
858: # mark the end of student with an appropriate number of newlines.
859: # parameters:
860: # psfile - Postscript filename
861: # latexfile - LaTeX filename
862: # columns - number of columns.
863: sub repaginate {
864:
865: # We will try to do this in 2 passes through the postscript since
866: # the postscript is potentially large, to do 2 passes, the first pass
867: # must be able to calculate the total number of document pages so that
868: # at the beginning of the second pass we already know how to replace
869: # %%Pages:
870:
871: # Figure out
872: # 1. Number of pages in the document
873: # 2. Maximum number of pages in a student
874: # 3. Number of pages in each student.
875:
876: my ($postscript_filename, $latex_filename, $num_columns) = @_;
877: open(PSFILE, "<$postscript_filename");
878: my $line;
879: my $total_pages; # Total pages in document.
880: my $seen_pages = 0; # There are several %%Pages only the first is useful
881: my @pages_in_student; # For each student his/her initial page count.
882: my $max_pages = 0; # Pages in 'longest' student.
883: my $page_number = 0;
884: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]",1));
885:
886: while ($line = <PSFILE>) {
887:
888: # Check for total pages (%%Pages:)
889:
890: if (($line =~ /^%%Pages:/) && (!$seen_pages)) {
891: my @pageinfo = split(/ /,$line);
892: $total_pages = $pageinfo[1];
893: $seen_pages = 1;
894: }
895: # Check for %%Page: n m $page_number will be the
896: # biggest of these until we see an endofstudent.
897: # Note that minipages generate spurious %Page: 1 1's so
898: # we only are looking for the largest n (n is page number at the
899: # bottom of the page, m the page number within the document.
900: #
901:
902: if ($line =~ /^%%Page:\s+\d+\s+\d+/) {
903: my @pageinfo = split(/\s+/, $line);
904: if ($page_number < $pageinfo[1]) {
905: $page_number = $pageinfo[1];
906: } elsif ($pageinfo[2] ne 1) {
907: # current page count reset, and it's not because of a
908: # minipage
909: # - save the page_number, reset and, if necessary
910: # update max_pages.
911: push(@pages_in_student, $page_number);
912: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]", scalar(@pages_in_student)));
913: if ($page_number > $max_pages) {
914: $max_pages = $page_number;
915: }
916: $page_number = $pageinfo[1];
917: }
918: }
919:
920:
921: }
922: # file ended so one more student
923: push(@pages_in_student, $page_number);
924: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]",scalar(@pages_in_student)));
925: if ($page_number > $max_pages) {
926: $max_pages = $page_number;
927: }
928: $page_number = 0;
929:
930: close(PSFILE);
931:
932: # If 2 columns, max_pages must go to an even number of columns:
933:
934:
935: if ($num_columns == 2) {
936: if ($max_pages % 2) {
937: $max_pages++;
938: }
939: }
940:
941: # Now rewrite the LaTex file, substituting our \special
942: # with an appropriate number of \newpage directives.
943:
944: my $outfilename = $latex_filename."temp";
945:
946: open(LATEXIN, "<$latex_filename");
947: open(LATEXOUT, ">$outfilename");
948:
949:
950: my $student_number = 0; # Index of student we're working on.
951: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1));
952:
953: while (my $line = <LATEXIN>) {
954: if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {
955: # only end of student stamp if next line is ENDOFSTUDENTSTAMP:
956:
957:
958: # End of student replace with 0 or more newpages.
959:
960: my $addlines = $max_pages - $pages_in_student[$student_number];
961: while($addlines) {
962: print LATEXOUT '\clearpage \strut \clearpage';
963:
964: $addlines--;
965: }
966:
967: $student_number++;
968: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1));
969:
970: } else {
971: print LATEXOUT $line;
972: }
973: }
974:
975: close(LATEXIN);
976: close(LATEXOUT);
977: rename($outfilename, $latex_filename);
978:
979: }
980:
981: #
982: # Create missing fonts given a latex missfonts.log file.
983: # This file will have lines like:
984: #
985: # mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 tcrm0500
986: #
987: # We want to execute those lines with the 8000's changed to 600's
988: # in order to match the resolution of the ljfour printer.
989: # Of course if some wiseguy has changed the default printer from ljfour
990: # in the dvips's config.ps file that will break so we'll also
991: # ensure that --mfmode is ljfour.
992: #
993: sub create_missing_fonts {
994: my ($fontfile, $state) = @_;
995:
996: # Open and read in the font file..we'll read it into the array
997: # font_commands.
998: #
999: open(my $font_handle, $fontfile);
1000: my @font_commands = <$font_handle>;
1001:
1002: # make the list contain each command only once
1003: my %uniq;
1004: @font_commands = map { $uniq{$_}++ == 0 ? $_ : () } @font_commands;
1005:
1006: # Now process each command replacing the appropriate 8000's with
1007: # 600's ensuring that font names with 8000's in them are not corrupted.
1008: # and if the --mfmode is not ljfour we turn it into ljfour.
1009: # Then we execute the command.
1010: #
1011:
1012: foreach my $command (@font_commands) {
1013: #print("<br />Raw command: $command");
1014: $command =~ s/ 8000/ 600/g; # dpi directives.
1015: $command =~ s/\/8000/\/600/g; # mag directives.
1016: #print("<br />After dpi replacements: $command");
1017:
1018: my @cmdarray = split(/ /,$command);
1019: for (my $i =0; $i < scalar(@cmdarray); $i++) {
1020: if ($cmdarray[$i] eq '--mfmode') {
1021: $cmdarray[$i+1] = "ljfour";
1022: }
1023: }
1024: #print("<br /> before reassembly : (@cmdarray)");
1025: $command = join(" ", (@cmdarray));
1026:
1027: #print("<br />Creating fonts via command: $command");
1028: &busy_wait_command("$command 1>/dev/null 2>/dev/null",
1029: "Creating missing font",
1030: $state);
1031:
1032: }
1033:
1034: }
1035: #
1036: # Convert a figure file to encapsulated postscript:
1037: # At present, this is using a lot of file scoped globals to pass data around.
1038: # Parameters:
1039: # not_eps - The name of the file to convert which, presumably, is not
1040: # already an eps file.
1041: #
1042: sub convert_figure {
1043: my ($not_eps) = @_;
1044: &debug("in convert_figure");
1045:
1046: my $status_statement='EPS picture for '.$not_eps;
1047: my $eps_f = $not_eps;
1048:
1049: if ($eps_f=~/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)\//) {
1050: $eps_f=~s/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)/$1/;
1051: } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) {
1052: $eps_f=~ s/$perlvar{'lonDocRoot'}\/res\/(.+)/$1/;
1053: } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) {
1054: $eps_f=~ s/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/$1\/$2/;
1055: }
1056:
1057: $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
1058:
1059: # Spaces are problematic for system commands and LaTeX, replace with _
1060:
1061: $eps_f =~ s/ /\_/g;
1062:
1063: #
1064: # If the file is already an .eps or .ps file (eps_f still has the original
1065: # file type),
1066: # We really just need to copy it from where it was to prtspool
1067: # but with the spaces substituted to _'s.
1068: #
1069: my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);
1070: if ($sext =~/ps$/i) {
1071: &File::Path::mkpath($path,0,0777);
1072: copy("$not_eps", "$eps_f");
1073: } else {
1074:
1075: $eps_f .= '.eps'; # Just append the eps ext.
1076: my $path= &dirname($eps_f);
1077: &File::Path::mkpath($path,0,0777);
1078: $not_eps =~ s/^\s+//;
1079: $not_eps =~ s/\s+$//;
1080: my $prettyname=$not_eps;
1081: if ($advanced_role) {
1082: $prettyname=~s|$perlvar{'lonDocRoot'}/|/|;
1083: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Converting to EPS: [_1]',$prettyname));
1084: }
1085: #
1086: # If the file is a PDF, need to use pdftops to convert it to a ps file.
1087: # otherwise use imagemagik:
1088: #
1089: if($not_eps =~/\.(pdf|PDF)$/) {
1090:
1091: #
1092: # For whatever reason, pure postscript conversions have to be
1093: # in the same dir as the base file:
1094: #
1095: $eps_f = &basename($eps_f);
1096: $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
1097:
1098: &debug("Converting pdf $not_eps to postscript: $eps_f");
1099: my @args = ('pdftops',$not_eps,$eps_f);
1100: system({$args[0]} @args); # Indirect object forces list processing mode.
1101: # See perlfunc documentation for exec().
1102: if ($? and $advanced_role) {
1103: print '<p class="LC_warning">'
1104: .&mt('An error occurred during the conversion of [_1] to postscript.',
1105: '<span class="LC_filename">'.$prettyname.'</span>')
1106: .'</p>';
1107: } else {
1108: $pdfs_converted++; # Need to fix ps in last pass.
1109: }
1110: } else {
1111: my @args = ('convert',$not_eps,$eps_f);
1112: system({$args[0]} @args); # Indirect object forces list processing mode.
1113: # See perlfunc documentation for exec().
1114: if ($? and $advanced_role) {
1115: print '<p class="LC_warning">'
1116: .&mt('An error occurred during the conversion of [_1].',
1117: '<span class="LC_filename">'.$prettyname.'</span>')
1118: .'<br />'
1119: .&mt('If possible try to save this image using different settings and republish it.')
1120: .'</p>';
1121: }
1122: }
1123:
1124: if (not -e $eps_f) {
1125: # converting an animated gif creates either:
1126: # anim.gif.eps.0
1127: # or
1128: # anim.gif-0.eps
1129: for (my $i=0;$i<10000;$i++) {
1130: if (-e $eps_f.'.'.$i) {
1131: rename($eps_f.'.'.$i, $eps_f);
1132: last;
1133: }
1134: my $anim_eps = $eps_f;
1135: $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
1136: if (-e $anim_eps) {
1137: rename($anim_eps, $eps_f);
1138: last;
1139: }
1140: }
1141: }
1142:
1143: # imagemagick 6.2.0-6.2.7 fails to properly handle
1144: # convert anim.gif anim.gif.eps
1145: # it creates anim.eps instead.
1146: if (not -e $eps_f) {
1147: my $eps_f2 = $eps_f;
1148: $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
1149: if(-e $eps_f2) {
1150: rename($eps_f2,$eps_f);
1151: }
1152: }
1153: }
1154:
1155: }
1156: #
1157: # Analyze a LaTeX logfile producing appropriate output on error and
1158: # returning a boolean to let the caller know if, in our opinion, it's
1159: # worth continuing on to produce the PDF file.
1160: #
1161: # Parameters:
1162: # logfilename - Name of the logfile.
1163: # texfile - Name of the LaTeX file that was being processed.
1164: # advanced_role - True if the user is privileged with respect to the printout
1165: # (e.g. is the course coordinator or some such thing).
1166: # Returns:
1167: # 1 - Caller is advised to continue to create the PDF.
1168: # 0 - Caller need not bother creating the PDF.
1169: # Side Effects:
1170: # Messages are printed to describe any errors that have been encountered.
1171: # NOTE:
1172: # The current policy is to assume that if LaTeX decided to insert some text
1173: # it has salvaged the resource and the resource can be printed.. in that case
1174: # a message is emitted from this sub.
1175: #
1176: sub analyze_logfile {
1177: my ($logfilename, $texfile, $advanced_role) = @_;
1178:
1179: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
1180: my @content_of_file = <$temporary_file>;
1181: close $temporary_file;
1182: my $body_log_file = join(' ',@content_of_file);
1183: $logfilename =~ s/\.log$/\.html/;
1184: $temporary_file = IO::File->new('>'.$logfilename);
1185: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
1186: if ($body_log_file=~m/!\s+Emergency stop/) {
1187: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
1188: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
1189: my $badresource;
1190: my $badtext;
1191: if ($whereitbegins!=-1 and $whereitends!=-1) {
1192: $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
1193: $whereitbegins = rindex $badtext,'located in';
1194: if ($whereitbegins != -1) {
1195:
1196: $badresource = substr($badtext, $whereitbegins+27,
1197: length($badtext) - $whereitbegins - 48);
1198: # print "<br />failing resourcename: $badresource<br />";
1199: }
1200: }
1201:
1202: # Guys with privileged roles get a more detailed error output:
1203:
1204: if ($advanced_role) {
1205: #LaTeX failed to parse tex file
1206: print "<h2>".&mt('LaTeX could not successfully parse your TeX file.')."</h2>";
1207: print &mt('It probably has errors in it.')."<br />";
1208: if ($badtext) {
1209: print &mt('With very high probability this error occurred in [_1].',$badtext)
1210: ."<br /><br />";
1211: }
1212: print &mt('Here are the error messages in the LaTeX log file:')
1213: ."<br /><pre>";
1214:
1215: my $sygnal = 0;
1216: for (my $i=0;$i<=$#content_of_file;$i++) {
1217: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
1218: $sygnal = 1;
1219: }
1220: if ($content_of_file[$i]=~m/Here is how much of/) {
1221: $sygnal = 0;
1222: }
1223: if ($sygnal) {
1224: print "$content_of_file[$i]";
1225: }
1226: }
1227: print "</pre>\n";
1228: # print "<br /> Advanced role <br />";
1229: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1230: print "<b><big>"
1231: .&mt('The link to [_1]Your log file[_2]','<a href="'.$logfilename.'">','</a>')
1232: ."</big></b>\n";
1233: #link to original LaTeX file
1234: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
1235: my @tex_content_of_file = <$tex_temporary_file>;
1236: close $tex_temporary_file;
1237: my $body_tex_file = join(' ',@tex_content_of_file);
1238: $texfile =~ s/\.tex$/aaaaa\.html/;
1239: $tex_temporary_file = IO::File->new('>'.$texfile);
1240: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
1241: print "<br /><br />";
1242: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1243: print "<b><big>"
1244: .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>')
1245: ."</big></b><br /><br />\n";
1246: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
1247: print ("$help_text");
1248:
1249: # Students on the other hand get a minimal error message, since they won't
1250: # be able to correct the error message. A message is sent to the
1251: # instructor:
1252:
1253: } else { # Student role...
1254: # at this point:
1255: # $body_log_file - contains the log file.
1256: # $name_file - is the name of the LaTeX file.
1257: # $identifier - is the unique LaTeX identifier.l
1258:
1259: print '<p class="LC_error">';
1260: if ($badtext) {
1261: print &mt('There are errors in [_1].',$badtext);
1262: } else {
1263: print &mt('There are errors.');
1264: }
1265: print '</p>'
1266: .&mt('These errors prevent this resource from printing correctly.');
1267:
1268: my $tex_handle = IO::File->new($texfile);
1269: my @tex_contents = <$tex_handle>;
1270: &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
1271: print "<p>"
1272: .&mt('A message has been sent to the instructor describing this failure.')
1273: ."</p>";
1274: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
1275: print ("$help_text");
1276:
1277: }
1278:
1279: # Either way, an emergency stop does not allow us to continue so:
1280:
1281: return 0;
1282:
1283: # The branch of code below is taken if it appears that
1284: # there was no emergency stop but LaTeX had to correct the
1285: # input file to run.
1286: # In that case we need to provide error feedback, as the correction >may< not be
1287: # sufficient, we can let the game continue as there's a dvi file to process.
1288:
1289: } elsif ($body_log_file=~m/<inserted text>/) {
1290: my $whereitbegins = index $body_log_file,'<inserted text>';
1291: print &mt('You are running LaTeX in [_1]batch mode[_2].','<b>','</b>');
1292: while ($whereitbegins != -1) {
1293: my $tempobegin=$whereitbegins;
1294: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
1295: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
1296: print "<br />"
1297: .&mt('It has found an error in [_1][_2]and corrected it.',substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26),"<br />")."\n";
1298: print &mt('Usually this correction is valid but you probably need to check the indicated resource one more time and implement necessary corrections by yourself.')."\n";
1299: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
1300: }
1301:
1302: if ($advanced_role) {
1303: print "<br /><br />";
1304: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1305: print "<b><big>"
1306: .&mt('The link to [_1]Your log file[_2]'
1307: ,'<a href="'.$logfilename.'">','</a>')
1308: ."</big></b>\n";
1309: #link to original LaTeX file
1310: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
1311: my @tex_content_of_file = <$tex_temporary_file>;
1312: close $tex_temporary_file;
1313: my $body_tex_file = join(' ',@tex_content_of_file);
1314: $texfile =~ s/\.tex$/aaaaa\.html/;
1315: $tex_temporary_file = IO::File->new('>'.$texfile);
1316: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
1317: print "<br /><br />";
1318: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1319: print "<b><big>"
1320: .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>');
1321: print "</big></b>\n";
1322: }
1323: return 1;
1324: }
1325: return 1; # NO log file issues at all.
1326: }
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