1: #!/usr/bin/perl
2: # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
3: #
4: # $Id: printout.pl,v 1.166 2017/11/12 16:23:03 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: $|=1;
165: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
166: print <<END;
167: Content-type: text/html
168:
169: <html>
170: <head><title>Bad Cookie</title></head>
171: <body>
172: Your cookie information is incorrect.
173: </body>
174: </html>
175: END
176: exit;
177: }
178:
179: my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
180: &Apache::lonlocal::get_language_handle();
181: &Apache::loncommon::content_type(undef,'text/html');
182: $env{'request.noversionuri'} = '/cgi-bin/printout.pl';
183: # Breadcrumbs
184: #FIXME: Choose better/different breadcrumbs?!? Links?
185: my $brcrum = [{'href' => '',
186: 'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
187: {'href' => '',
188: 'text' => 'Preparing Printout'},
189: {'href' => '',
190: 'text' => 'Creating PDF'}];
191: print(&Apache::loncommon::start_page('Creating PDF',
192: undef,
193: {'bread_crumbs' => $brcrum,}));
194:
195: my $identifier = $ENV{'QUERY_STRING'};
196: my $texfile = $env{'cgi.'.$identifier.'.file'};
197: my $laystyle = $env{'cgi.'.$identifier.'.layout'};
198: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
199: my $paper = $env{'cgi.'.$identifier.'.paper'};
200: my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
201: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
202: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
203: my $advanced_role = $env{'cgi.'.$identifier.'.role'};
204: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
205: my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
206: my $backref = &unescape($env{'cgi.'.$identifier.'.backref'});
207:
208:
209: my @names_pack=();
210: if ($student_names=~/_END_/) {
211: @names_pack=split(/_ENDPERSON_/,$student_names);
212: }
213: if ($backref) {
214: print('<p>'.&mt("[_1]Return[_2] to resource.",
215: "<a href=\"$backref\"><b>","</b></a>").'</p>');
216: print('<p><a href="javascript:gopost(\'/adm/printout\',\''.$backref.'\');">'.
217: &mt("Change Printing Options").'</a></p>'."\n");
218: }
219: my $figfile = $texfile;
220: $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/;
221: my $duefile = $texfile;
222: $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/;
223:
224:
225: #-------------------------------------------------------------------------------------
226: #
227: # Each print may have associated with it a file that contains a set of figures
228: # that need to be converted to .eps from whatever form they were in when included
229: # in the resource. The name of the figure file is in $figfile. If it exists,
230: # it contains the names of the files that need to be converted, one per line.
231: #
232:
233: &debug("Figure file is $figfile");
234:
235: if (-e $figfile) {
236: &debug( "Figure file exists");
237: &debug("$figfile exists");
238: my %done_conversion;
239: my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
240: my @content_of_file = <$temporary_file>;
241: close $temporary_file;
242: my $noteps;
243: my %prog_state;
244: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$#content_of_file); }
245: print('<br />');
246: foreach my $not_eps (@content_of_file) {
247: chomp($not_eps);
248: &debug( "Being asked to convert $not_eps");
249: if ($not_eps ne '') {
250: $not_eps=~s|\/\.\/|\/|g;
251: if (!$done_conversion{$not_eps}) { # Only convert multiple includes once.
252: &convert_figure($not_eps);
253: $done_conversion{$not_eps} = 1;
254: }
255: }
256: }
257: if ($advanced_role) {
258: &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
259: }
260: unlink($figfile);
261: }
262: # End of figure conversion section:
263: #
264: #--------------------------------------------------------------------------------------------
265: #
266: # Figure out which Tex files we need to process. If this is a large class e.g.
267: # the instructor may have asked that the printout be by section, one section per file
268: # in that case, the output tex fiels will be the base filename with 3 digit serial numbers
269: # just prior to the .tex file type.
270: # By the time this loop exits, @texfile is an array of the files to process.
271: #
272:
273: my @texfile=($texfile);
274: if ($number_of_files>1) {
275: @texfile=();
276: for (my $i=1;$i<=$number_of_files;$i++) {
277: my $new_texfile=$texfile;
278: $new_texfile=~s/\.tex//;
279: $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
280: push @texfile,$new_texfile;
281: }
282: }
283:
284: #--------------------------------------------------------------------------------------------
285:
286: my $ind=-1;
287:
288: my %prog_state;
289: if ($advanced_role) {
290: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$number_of_files);
291: }
292: print "<br />";
293: my $num_files = @texfile; # How does this differ from $number_of_files , can that be 0?
294:
295:
296:
297:
298: foreach $texfile (@texfile) {
299: my $status_statement='';
300: my $link_text='download PDF';
301: $ind++;
302:
303: #---------------------------------------------------------------------------------------
304: # This chunk of code
305: # determines the status message for the printout, and the download link text.
306: # If the print is for one or more students, both will contain the range of students
307: # covered by this file.
308: #
309:
310: my @stud_info=split(/_END_/,$names_pack[$ind]);
311: my @tempo_array=split(/:/,$stud_info[0]); # username:domain:section:full name:...
312: my $name;
313: my $name_range='';
314:
315: # $name -> Either user's full name or username:domain
316: # $name_range -> Either user's last name or username.
317:
318: if ($tempo_array[3]) {
319: $name=$tempo_array[3];
320: $name =~ s{^\s+|\s+$}{}g;
321: if ($name =~ /,/) {
322: ($name_range) = split(/,/,$name, 2);
323: } elsif ($name =~ /\s/) {
324: $name_range = $name;
325: $name_range =~ s/\s+/_/;
326: } else {
327: $name_range = $name;
328: }
329: $name_range =~ s/[^\w\:\-]+//g;
330: } else {
331: $name=$tempo_array[0].':'.$tempo_array[1];
332: $name_range = $tempo_array[0];
333: }
334:
335: # If there truly is a name add it to the status text so we know which
336: # user is getting printed.
337: #
338:
339: if (($name ne "") && ($name ne ':') ) { # Could be printing codes...
340: $link_text='<b>'.$name.'</b>';
341: $status_statement.=$name;
342: }
343:
344: # Group of students being printed...
345: # $name_range -> first student's name - last student's name
346: #
347:
348: if ($#stud_info>0) {
349: @tempo_array=split(/:/,$stud_info[-1]);
350: if ($tempo_array[3]) {
351: $name=$tempo_array[3];
352: $name =~ s{^\s+|\s+$}{}g;
353: my $lastname;
354: if ($name =~ /,/) {
355: ($lastname) = split(/,/, $name,2);
356: } elsif ($name =~ /\s/) {
357: $lastname = $name;
358: $lastname =~ s/\s+/_/;
359: } else {
360: $lastname = $name;
361: }
362: $name_range .= "-".$lastname;
363: $name_range =~ s/[^\w\:\-]+//g;
364: } else {
365: $name=$tempo_array[0].':'.$tempo_array[1];
366: $name_range .= '-'.$tempo_array[0];
367: }
368: if (($name ne "") && ($name ne ':')) {
369: $link_text.=' - <b>'.$name.'</b>';
370: $status_statement.=' - '.$name;
371:
372: }
373: }
374:
375: # $name_range is the range of names in this file.
376: # $name is the first of the names in this file.
377: #
378: #-----------------------------------------------------------------------
379:
380: # If the number of files is > 1, but we don't have multiple
381: # student names, we must be printing an exam from codes.
382: # The download link becomes the filename (basename.tex
383: # The status info has the basename appended to it.
384: #
385: if(($num_files > 1) && ($link_text eq 'download PDF')) {
386: $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
387: $status_statement .= basename($texfile);
388: }
389:
390:
391: #------------------------------------------------------------------------
392:
393: $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
394:
395:
396: print "<br/>";
397: if ($advanced_role) {
398: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Creating PDF for: [_1]',$status_statement));
399: }
400:
401: if (-e $texfile) { # Ensure the tex file exists:
402:
403: #---------------------------------------------------------------------
404: #
405: # Put username ranges into the original tex
406: # Tex filename from which they'll propagate into the other filenames as well.
407: #
408:
409: if (($name_range ne '') && ($num_files > 1)) {
410: my $newtexfile = $texfile;
411: $newtexfile =~ s/\.tex/$name_range\.tex/;
412: rename($texfile, $newtexfile);
413: $texfile = $newtexfile;
414: }
415:
416: #---------------------------------------------------------------------
417:
418: $texfile =~ m/^(.*)\/([^\/]+)$/;
419: my $name_file = $2;
420: my $path_file = $1.'/';
421: chdir $path_file;
422: my $dvi_file= $name_file; $dvi_file =~ s/\.tex$/\.dvi/;
423: &make_dvi_file($name_file,
424: $dvi_file,
425: $tableofcontents,
426: $tableofindex,
427: $status_statement,
428: \%prog_state,
429: $busy_wait_timeout);
430:
431:
432: #Do we have a latex error in the log file?
433:
434:
435: my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
436:
437:
438: if (&analyze_logfile($logfilename, $texfile, $advanced_role)) {
439:
440:
441: #LaTeX successfully parsed tex file
442: $name_file =~ s/\.tex/\.dvi/;
443: my $new_name_file = $name_file;
444: $new_name_file =~ s/\.dvi/\.ps/;
445: # Explicitly include a switch for papertype, otherwise dvips will default
446: # to whatever is listed first in config.ps (which in most cases is a4).
447: # Historically (since 2004) LON-CAPA printing expected to use the default,
448: # i.e., a papertype of a4, when the user selected letter [8 1/2 x 11 in]
449: # in the Layout options, so I follow that convention if $papera is letter.
450: my $papera=$paper;
451: if ($papera eq 'letter') {$papera='a4';}
452: if ($papera ne '') {$papera='-t'.$papera;}
453: my $extra_ps_header = $perlvar{'lonLib'} .'/includepsheader.ps';
454: my $comma = "dvips $papera -h $extra_ps_header -Ppdf -G0 -o $new_name_file";
455: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
456: "for $status_statement now Converting to PS",
457: \%prog_state,$new_name_file);
458: #
459: # One last little hinky kinky thing.
460: # It's just possible that some fonts could not be maded
461: # at the resolution of the pdf print driver.
462: # In that case a file called missfont.log will have been
463: # created that will contain the commands that were attempted
464: # to create the missing fonts. If we basically
465: # take all the 8000 strings in that file, and
466: # replace them with 600 (the ljfour resolution)
467: # run the commands in that file and redvips,
468: # we'll be able to print the missing glyphs at 600dpi.
469: #
470: # Supposedly it is possible to tune TeX/Metafont to do this
471: # right but I failed to get that to work when following the
472: # docs at the tug site, hence this rather kludgey fix.
473: #
474:
475: my $print_directory = dirname($name_file);
476: my $missfonts_file = $print_directory."/missfont.log";
477: #print("<br /> Missing fonts file is: $missfonts_file");
478: if (-e $missfonts_file) {
479: #print("<br />Missing fonts file exists\n");
480: &create_missing_fonts($missfonts_file,\%prog_state);
481: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
482: "for $status_statement dvips generated missing fonts",
483: \%prog_state, $new_name_file);
484: }
485: if (-e $new_name_file) {
486: my $latex_file = $name_file;
487: $latex_file =~ s/\.dvi/\.tex/;
488: &repaginate($new_name_file, $latex_file, $numberofcolumns);
489:
490: &make_dvi_file($latex_file,
491: $name_file,
492: $tableofcontents,
493: $tableofindex,
494: $status_statement,
495: \%prog_state,
496: $busy_wait_timeout);
497:
498:
499: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
500: "for $status_statement dvips to repaginate",
501: \%prog_state, $new_name_file);
502:
503: print "<br />";
504: $new_name_file =~ m/^(.*)\./;
505: my $ps_file = my $tempo_file = $1.'temporar.ps';
506: my $pdf_file = $1.'.pdf';
507: $papera=~s/t/p/;
508: #----
509: # The code below uses fixps to make pdf include in sequences work.
510: #
511: # $comma = "fixps --force $new_name_file";
512: # &debug("FIXPS command: $comma");
513: # &busy_wait_command("$comma 1>$tempo_file 2>/dev/null",
514: # "for $status_statement now validating PS",
515: # \%prog_state,$tempo_file);
516:
517: #---
518: # The code below uses gs to make pdf includes in sequences work
519:
520: # Use gs to fix the postscript -> level 1.5
521: # .. if pdfs were included
522:
523: if ($pdfs_converted > 0) {
524: $comma = "gs -sDEVICE=pswrite -dLanguageLevel=1.5 ";
525: &busy_wait_command("$comma -o $tempo_file $new_name_file 2>/dev/null 1>/dev/null",
526: "for $status_statement now validating PS",
527: \%prog_state, $tempo_file);
528:
529: #---
530: &busy_wait_command("mv $tempo_file $new_name_file",
531: 'File move', \%prog_state, $new_name_file);
532: }
533: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
534: $comma = "psnup $papera -2 -s1.0 $new_name_file";
535: &debug("PSNUP command: $comma");
536: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
537: "for $status_statement now Modifying PS layout",
538: \%prog_state,$tempo_file);
539: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
540: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)" '.$new_name_file;
541: &debug("PSTOPS command: $comma ");
542: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
543: "for $status_statement now Modifying PS layout",
544: \%prog_state,$tempo_file);
545: } else {
546: $ps_file=$new_name_file;
547: }
548: my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
549: 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
550: 'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
551: 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
552: 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
553: 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
554: 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
555: 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
556: };
557: if ($paper ne 'letter') {
558: open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n";
559: my $new_ps_file='new'.$ps_file;
560: open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n";
561: print FFHS $addtoPSfile->{$paper}."\n";
562: while (<FFH>) {
563: print FFHS $_;
564: }
565: close(FFH);
566: close(FFHS);
567: $ps_file=$new_ps_file;
568: }
569: &busy_wait_command("ps2pdf13 $ps_file $pdf_file 1>/dev/null 2>/dev/null",
570: "for $status_statement now Converting PS to PDF",
571: \%prog_state,$pdf_file);
572:
573: my $texlog = $texfile;
574: my $texaux = $texfile;
575: my $texdvi = $texfile;
576: my $texps = $texfile;
577: $texlog =~ s/\.tex/\.log/;
578: $texaux =~ s/\.tex/\.aux/;
579: $texdvi =~ s/\.tex/\.dvi/;
580: $texps =~ s/\.tex/\.ps/;
581: my @garb = ($texlog,$texaux,$texdvi,$texps);
582: # unlink @garb;
583: unlink($duefile);
584: print
585: '<p>'
586: .&mt('[_1] - [_2]Your PDF file[_3] is ready for download.',
587: $link_text,'<a href="/prtspool/'.$pdf_file.'">','</a>')
588: .'</p>'."\n";
589: }
590: unlink($missfonts_file);
591:
592: }
593: } else {
594: print
595: '<p class="LC_error">'
596: .&mt('The LaTeX file [_1] was not created successfully.',
597: '<span class="LC_filename">'.$texfile.'</span>')
598: .'</p>';
599: }
600: }
601: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
602: print "<br />";
603: if ($number_of_files>1) {
604: print('<p>'.&mt('Zip Output:')."\n");
605: my %zip_prog_state;
606: if ($advanced_role) { %zip_prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$number_of_files); }
607: my $zipfile=$texfile[0];
608: $zipfile=~s/\.tex/\.zip/;
609: my $zip = Archive::Zip->new();
610: my $counter = 0;
611: foreach my $file (@texfile) {
612: $file=~s/\.tex/.\pdf/;
613: my $dest=$file;
614: $dest=~s{^\Q$perlvar{'lonPrtDir'}\E}{prtspool};
615: $zip->addFile($file,$dest);
616: $dest=~s/^prtspool//;
617: $counter ++;
618: if ($advanced_role) {
619: &Apache::lonhtmlcommon::Update_PrgWin('',\%zip_prog_state,
620: &mt('[_1] added to zip archive ([_2] of [_3]',
621: $dest,$counter,$number_of_files));
622: }
623: }
624: if ($advanced_role) {
625: &Apache::lonhtmlcommon::Update_PrgWin('',\%zip_prog_state,&mt('Writing zip file'));
626: }
627: if ($zip->writeToFileNamed($zipfile) == AZ_OK) {
628: $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
629: print
630: '<p>'
631: .&mt('A [_1]ZIP file[_2] of all the PDF files is ready for download.',
632: '<a href="'.$zipfile.'">','</a>')
633: .'</p>';
634: } else {
635: print '<p class="LC_error">'.
636: &mt('An error occurred creating a ZIP file of all the PDF files').
637: '</p>';
638: }
639: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%zip_prog_state); }
640: }
641: print(&Apache::loncommon::end_page());
642: my $done;
643:
644: sub REAPER {
645: $done=1;
646: }
647: #
648: # Execute a command updating the status window as the command's
649: # output file builds up (at intervals of a second).
650: #
651: # If the timeout argument defined, then if that many seconds
652: # elapses without an increase in the size of the output file,
653: # the command will be killed (this deals with the case when
654: # latex crawls into an infinite loop).
655: #
656: sub busy_wait_command {
657: my ($command,$message,$progress_win,$output_file, $timeout)=@_;
658:
659: $SIG{CHLD} = \&REAPER;
660: $done=0;
661: my $pid=open(CMD,"$command |");
662: if ($advanced_role) {
663: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
664: }
665: my $last_size = 0;
666: my $unchanged_time = 0;
667: while(!$done) {
668: sleep 1;
669: my $extra_msg;
670: if ($output_file) {
671: my $size=(stat($output_file))[7];
672: $extra_msg=", $size bytes generated";
673: if ($size == $last_size) {
674: $unchanged_time++;
675: if ($timeout && ($unchanged_time > $timeout)) {
676: print '<p class="LC_error">'.&mt('Operation timed out!')."</p>\n";
677: print "<p>Executing $command, the output file $output_file did not grow\n";
678: print "after $timeout seconds. This <em>may</em> indicate $command\n";
679: print "is in an infinite loop.\n";
680: print "See if printing fewer copies helps. Please contact LON-CAPA\n";
681: print "support about this in any event.";
682: print "</p>";
683: kill(9, $pid); # Reaper will do the rest...I hope there's errors in the log.
684: }
685: } else {
686: $last_size = $size;
687: $unchanged_time = 0;
688: }
689: }
690: if ($advanced_role) {
691: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message.$extra_msg);
692: }
693: }
694: $SIG{CHLD}='IGNORE';
695: close(CMD);
696: }
697:
698: # Make the dvi file (or rather try to), from the latex file and the
699: # various bits and pieces that control how the latex file is processed:
700: # LaTeX is run as many times a needed to make this all happen... this may
701: # result in several runs of LaTeX that just are errors if the LaTeX is
702: # bad, but the printing subsystem is _supposed_ to not do that.
703: #
704: # Parameters:
705: # name_file - Name of the LaTeX file to process.
706: # dvi_file - Name of resulting dvi file.
707: # tableofcontents - "yes" if we are supposed to make a table of contents.
708: # tableofindex - "yes" if we are suposed to make an index.
709: # status_statement - Part of the status statement for ths status window.
710: # prog_state - Reference to the program state hash.
711: # busy_wait_timeout- Seconds without any progress that imply a problem.
712: #
713: #
714: sub make_dvi_file {
715: my ($name_file,
716: $dvi_file,
717: $tableofcontents,
718: $tableofindex,
719: $status_statement,
720: $prog_state,
721: $busy_wait_timeout) = @_;
722:
723:
724: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
725: "for $status_statement now LaTeXing file",
726: $prog_state,$dvi_file, $busy_wait_timeout);
727:
728: # If the tableof contents was requested, we need to run
729: # LaTex a couple more times to get all the references sorted out.
730:
731: if ($tableofcontents eq 'yes') {
732: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
733: "for $status_statement First LaTeX of file for table of contents",
734: $prog_state,$dvi_file, $busy_wait_timeout);
735: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
736: "for $status_statement Second LaTeX of file for table of contents",
737: $prog_state,$dvi_file,$busy_wait_timeout);
738: }
739:
740: # And makeindex and another run of LaTeX to incorporate it if the index
741: # is enabled.
742:
743:
744: if ($tableofindex eq 'yes') {
745: my $idxname=$name_file;
746: $idxname=~s/\.tex$/\.idx/;
747: &busy_wait_command("makeindex $idxname",
748: "making index file",
749: $prog_state,$idxname);
750: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
751: "for $status_statement now LaTeXing file for index section",
752: $prog_state,$dvi_file, $busy_wait_timeout);
753: }
754:
755: }
756:
757:
758: # Repagninate
759: # What we need to do:
760: # - Count the number of pages in each student.
761: # - Rewrite the latex file replacing the \specials that
762: # mark the end of student with an appropriate number of newlines.
763: # parameters:
764: # psfile - Postscript filename
765: # latexfile - LaTeX filename
766: # columns - number of columns.
767: sub repaginate {
768:
769: # We will try to do this in 2 passes through the postscript since
770: # the postscript is potentially large, to do 2 passes, the first pass
771: # must be able to calculate the total number of document pages so that
772: # at the beginning of the second pass we already know how to replace
773: # %%Pages:
774:
775: # Figure out
776: # 1. Number of pages in the document
777: # 2. Maximum number of pages in a student
778: # 3. Number of pages in each student.
779:
780: my ($postscript_filename, $latex_filename, $num_columns) = @_;
781: open(PSFILE, "<$postscript_filename");
782: my $line;
783: my $total_pages; # Total pages in document.
784: my $seen_pages = 0; # There are several %%Pages only the first is useful
785: my @pages_in_student; # For each student his/her initial page count.
786: my $max_pages = 0; # Pages in 'longest' student.
787: my $page_number = 0;
788: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]",1));
789:
790: while ($line = <PSFILE>) {
791:
792: # Check for total pages (%%Pages:)
793:
794: if (($line =~ /^%%Pages:/) && (!$seen_pages)) {
795: my @pageinfo = split(/ /,$line);
796: $total_pages = $pageinfo[1];
797: $seen_pages = 1;
798: }
799: # Check for %%Page: n m $page_number will be the
800: # biggest of these until we see an endofstudent.
801: # Note that minipages generate spurious %Page: 1 1's so
802: # we only are looking for the largest n (n is page number at the
803: # bottom of the page, m the page number within the document.
804: #
805:
806: if ($line =~ /^%%Page:\s+\d+\s+\d+/) {
807: my @pageinfo = split(/\s+/, $line);
808: if ($page_number < $pageinfo[1]) {
809: $page_number = $pageinfo[1];
810: } elsif ($pageinfo[2] ne 1) {
811: # current page count reset, and it's not because of a
812: # minipage
813: # - save the page_number, reset and, if necessary
814: # update max_pages.
815: push(@pages_in_student, $page_number);
816: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]", scalar(@pages_in_student)));
817: if ($page_number > $max_pages) {
818: $max_pages = $page_number;
819: }
820: $page_number = $pageinfo[1];
821: }
822: }
823:
824:
825: }
826: # file ended so one more student
827: push(@pages_in_student, $page_number);
828: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]",scalar(@pages_in_student)));
829: if ($page_number > $max_pages) {
830: $max_pages = $page_number;
831: }
832: $page_number = 0;
833:
834: close(PSFILE);
835:
836: # If 2 columns, max_pages must go to an even number of columns:
837:
838:
839: if ($num_columns == 2) {
840: if ($max_pages % 2) {
841: $max_pages++;
842: }
843: }
844:
845: # Now rewrite the LaTex file, substituting our \special
846: # with an appropriate number of \newpage directives.
847:
848: my $outfilename = $latex_filename."temp";
849:
850: open(LATEXIN, "<$latex_filename");
851: open(LATEXOUT, ">$outfilename");
852:
853:
854: my $student_number = 0; # Index of student we're working on.
855: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1));
856:
857: while (my $line = <LATEXIN>) {
858: if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {
859: # only end of student stamp if next line is ENDOFSTUDENTSTAMP:
860:
861:
862: # End of student replace with 0 or more newpages.
863:
864: my $addlines = $max_pages - $pages_in_student[$student_number];
865: while($addlines) {
866: print LATEXOUT '\clearpage \strut \clearpage';
867:
868: $addlines--;
869: }
870:
871: $student_number++;
872: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1));
873:
874: } else {
875: print LATEXOUT $line;
876: }
877: }
878:
879: close(LATEXIN);
880: close(LATEXOUT);
881: rename($outfilename, $latex_filename);
882:
883: }
884:
885: #
886: # Create missing fonts given a latex missfonts.log file.
887: # This file will have lines like:
888: #
889: # mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 tcrm0500
890: #
891: # We want to execute those lines with the 8000's changed to 600's
892: # in order to match the resolution of the ljfour printer.
893: # Of course if some wiseguy has changed the default printer from ljfour
894: # in the dvips's config.ps file that will break so we'll also
895: # ensure that --mfmode is ljfour.
896: #
897: sub create_missing_fonts {
898: my ($fontfile, $state) = @_;
899:
900: # Open and read in the font file..we'll read it into the array
901: # font_commands.
902: #
903: open(my $font_handle, $fontfile);
904: my @font_commands = <$font_handle>;
905:
906: # make the list contain each command only once
907: my %uniq;
908: @font_commands = map { $uniq{$_}++ == 0 ? $_ : () } @font_commands;
909:
910: # Now process each command replacing the appropriate 8000's with
911: # 600's ensuring that font names with 8000's in them are not corrupted.
912: # and if the --mfmode is not ljfour we turn it into ljfour.
913: # Then we execute the command.
914: #
915:
916: foreach my $command (@font_commands) {
917: #print("<br />Raw command: $command");
918: $command =~ s/ 8000/ 600/g; # dpi directives.
919: $command =~ s/\/8000/\/600/g; # mag directives.
920: #print("<br />After dpi replacements: $command");
921:
922: my @cmdarray = split(/ /,$command);
923: for (my $i =0; $i < scalar(@cmdarray); $i++) {
924: if ($cmdarray[$i] eq '--mfmode') {
925: $cmdarray[$i+1] = "ljfour";
926: }
927: }
928: #print("<br /> before reassembly : (@cmdarray)");
929: $command = join(" ", (@cmdarray));
930:
931: #print("<br />Creating fonts via command: $command");
932: &busy_wait_command("$command 1>/dev/null 2>/dev/null",
933: "Creating missing font",
934: $state);
935:
936: }
937:
938: }
939: #
940: # Convert a figure file to encapsulated postscript:
941: # At present, this is using a lot of file scoped globals to pass data around.
942: # Parameters:
943: # not_eps - The name of the file to convert which, presumably, is not
944: # already an eps file.
945: #
946: sub convert_figure {
947: my ($not_eps) = @_;
948: &debug("in convert_figure");
949:
950: my $status_statement='EPS picture for '.$not_eps;
951: my $eps_f = $not_eps;
952:
953: if ($eps_f=~/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)\//) {
954: $eps_f=~s/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)/$1/;
955: } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) {
956: $eps_f=~ s/$perlvar{'lonDocRoot'}\/res\/(.+)/$1/;
957: } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) {
958: $eps_f=~ s/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/$1\/$2/;
959: }
960:
961: $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
962:
963: # Spaces are problematic for system commands and LaTeX, replace with _
964:
965: $eps_f =~ s/ /\_/g;
966:
967: #
968: # If the file is already an .eps or .ps file (eps_f still has the original
969: # file type),
970: # We really just need to copy it from where it was to prtspool
971: # but with the spaces substituted to _'s.
972: #
973: my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);
974: if ($sext =~/ps$/i) {
975: &File::Path::mkpath($path,0,0777);
976: copy("$not_eps", "$eps_f");
977: } else {
978:
979: $eps_f .= '.eps'; # Just append the eps ext.
980: my $path= &dirname($eps_f);
981: &File::Path::mkpath($path,0,0777);
982: $not_eps =~ s/^\s+//;
983: $not_eps =~ s/\s+$//;
984: $not_eps =~ s/ /\\ /g;
985: my $prettyname=$not_eps;
986: if ($advanced_role) {
987: $prettyname=~s|$perlvar{'lonDocRoot'}/|/|;
988: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Converting to EPS: [_1]',$prettyname));
989: }
990: #
991: # If the file is a PDF, need to use pdftops to convert it to a ps file.
992: # otherwise use imagemagik:
993: #
994: if($not_eps =~/\.(pdf|PDF)$/) {
995:
996: #
997: # For whatever reason, pure postscript conversions have to be
998: # in the same dir as the base file:
999: #
1000: $eps_f = &basename($eps_f);
1001: $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
1002:
1003: &debug("Converting pdf $not_eps to postscript: $eps_f");
1004: my @args = ('pdftops',$not_eps,$eps_f);
1005: system({$args[0]} @args); # Indirect object forces list processing mode.
1006: # See perlfunc documentation for exec().
1007: if ($? and $advanced_role) {
1008: print '<p class="LC_warning">'
1009: .&mt('An error occurred during the conversion of [_1] to postscript.',
1010: '<span class="LC_filename">'.$prettyname.'</span>')
1011: .'</p>';
1012: } else {
1013: $pdfs_converted++; # Need to fix ps in last pass.
1014: }
1015: } else {
1016: my @args = ('convert',$not_eps,$eps_f);
1017: system({$args[0]} @args); # Indirect object forces list processing mode.
1018: # See perlfunc documentation for exec().
1019: if ($? and $advanced_role) {
1020: print '<p class="LC_warning">'
1021: .&mt('An error occurred during the conversion of [_1].',
1022: '<span class="LC_filename">'.$prettyname.'</span>')
1023: .'<br />'
1024: .&mt('If possible try to save this image using different settings and republish it.')
1025: .'</p>';
1026: }
1027: }
1028:
1029: if (not -e $eps_f) {
1030: # converting an animated gif creates either:
1031: # anim.gif.eps.0
1032: # or
1033: # anim.gif-0.eps
1034: for (my $i=0;$i<10000;$i++) {
1035: if (-e $eps_f.'.'.$i) {
1036: rename($eps_f.'.'.$i, $eps_f);
1037: last;
1038: }
1039: my $anim_eps = $eps_f;
1040: $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
1041: if (-e $anim_eps) {
1042: rename($anim_eps, $eps_f);
1043: last;
1044: }
1045: }
1046: }
1047:
1048: # imagemagick 6.2.0-6.2.7 fails to properly handle
1049: # convert anim.gif anim.gif.eps
1050: # it creates anim.eps instead.
1051: if (not -e $eps_f) {
1052: my $eps_f2 = $eps_f;
1053: $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
1054: if(-e $eps_f2) {
1055: rename($eps_f2,$eps_f);
1056: }
1057: }
1058: }
1059:
1060: }
1061: #
1062: # Analyze a LaTeX logfile producing appropriate output on error and
1063: # returning a boolean to let the caller know if, in our opinion, it's
1064: # worth continuing on to produce the PDF file.
1065: #
1066: # Parameters:
1067: # logfilename - Name of the logfile.
1068: # texfile - Name of the LaTeX file that was being processed.
1069: # advanced_role - True if the user is privileged with respect to the printout
1070: # (e.g. is the course coordinator or some such thing).
1071: # Returns:
1072: # 1 - Caller is advised to continue to create the PDF.
1073: # 0 - Caller need not bother creating the PDF.
1074: # Side Effects:
1075: # Messages are printed to describe any errors that have been encountered.
1076: # NOTE:
1077: # The current policy is to assume that if LaTeX decided to insert some text
1078: # it has salvaged the resource and the resource can be printed.. in that case
1079: # a message is emitted from this sub.
1080: #
1081: sub analyze_logfile {
1082: my ($logfilename, $texfile, $advanced_role) = @_;
1083:
1084: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
1085: my @content_of_file = <$temporary_file>;
1086: close $temporary_file;
1087: my $body_log_file = join(' ',@content_of_file);
1088: $logfilename =~ s/\.log$/\.html/;
1089: $temporary_file = IO::File->new('>'.$logfilename);
1090: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
1091: if ($body_log_file=~m/!\s+Emergency stop/) {
1092: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
1093: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
1094: my $badresource;
1095: my $badtext;
1096: if ($whereitbegins!=-1 and $whereitends!=-1) {
1097: $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
1098: $whereitbegins = rindex $badtext,'located in';
1099: if ($whereitbegins != -1) {
1100:
1101: $badresource = substr($badtext, $whereitbegins+27,
1102: length($badtext) - $whereitbegins - 48);
1103: # print "<br />failing resourcename: $badresource<br />";
1104: }
1105: }
1106:
1107: # Guys with privileged roles get a more detailed error output:
1108:
1109: if ($advanced_role) {
1110: #LaTeX failed to parse tex file
1111: print "<h2>".&mt('LaTeX could not successfully parse your TeX file.')."</h2>";
1112: print &mt('It probably has errors in it.')."<br />";
1113: if ($badtext) {
1114: print &mt('With very high probability this error occurred in [_1].',$badtext)
1115: ."<br /><br />";
1116: }
1117: print &mt('Here are the error messages in the LaTeX log file:')
1118: ."<br /><pre>";
1119:
1120: my $sygnal = 0;
1121: for (my $i=0;$i<=$#content_of_file;$i++) {
1122: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
1123: $sygnal = 1;
1124: }
1125: if ($content_of_file[$i]=~m/Here is how much of/) {
1126: $sygnal = 0;
1127: }
1128: if ($sygnal) {
1129: print "$content_of_file[$i]";
1130: }
1131: }
1132: print "</pre>\n";
1133: # print "<br /> Advanced role <br />";
1134: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1135: print "<b><big>"
1136: .&mt('The link to [_1]Your log file[_2]','<a href="'.$logfilename.'">','</a>')
1137: ."</big></b>\n";
1138: #link to original LaTeX file
1139: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
1140: my @tex_content_of_file = <$tex_temporary_file>;
1141: close $tex_temporary_file;
1142: my $body_tex_file = join(' ',@tex_content_of_file);
1143: $texfile =~ s/\.tex$/aaaaa\.html/;
1144: $tex_temporary_file = IO::File->new('>'.$texfile);
1145: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
1146: print "<br /><br />";
1147: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1148: print "<b><big>"
1149: .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>')
1150: ."</big></b><br /><br />\n";
1151: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
1152: print ("$help_text");
1153:
1154: # Students on the other hand get a minimal error message, since they won't
1155: # be able to correct the error message. A message is sent to the
1156: # instructor:
1157:
1158: } else { # Student role...
1159: # at this point:
1160: # $body_log_file - contains the log file.
1161: # $name_file - is the name of the LaTeX file.
1162: # $identifier - is the unique LaTeX identifier.l
1163:
1164: print '<p class="LC_error">';
1165: if ($badtext) {
1166: print &mt('There are errors in [_1].',$badtext);
1167: } else {
1168: print &mt('There are errors.');
1169: }
1170: print '</p>'
1171: .&mt('These errors prevent this resource from printing correctly.');
1172:
1173: my $tex_handle = IO::File->new($texfile);
1174: my @tex_contents = <$tex_handle>;
1175: &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
1176: print "<p>"
1177: .&mt('A message has been sent to the instructor describing this failure.')
1178: ."</p>";
1179: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
1180: print ("$help_text");
1181:
1182: }
1183:
1184: # Either way, an emergency stop does not allow us to continue so:
1185:
1186: return 0;
1187:
1188: # The branch of code below is taken if it appears that
1189: # there was no emergency stop but LaTeX had to correct the
1190: # input file to run.
1191: # In that case we need to provide error feedback, as the correction >may< not be
1192: # sufficient, we can let the game continue as there's a dvi file to process.
1193:
1194: } elsif ($body_log_file=~m/<inserted text>/) {
1195: my $whereitbegins = index $body_log_file,'<inserted text>';
1196: print &mt('You are running LaTeX in [_1]batch mode[_2].','<b>','</b>');
1197: while ($whereitbegins != -1) {
1198: my $tempobegin=$whereitbegins;
1199: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
1200: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
1201: print "<br />"
1202: .&mt('It has found an error in [_1][_2]and corrected it.',substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26),"<br />")."\n";
1203: 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";
1204: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
1205: }
1206:
1207: if ($advanced_role) {
1208: print "<br /><br />";
1209: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1210: print "<b><big>"
1211: .&mt('The link to [_1]Your log file[_2]'
1212: ,'<a href="'.$logfilename.'">','</a>')
1213: ."</big></b>\n";
1214: #link to original LaTeX file
1215: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
1216: my @tex_content_of_file = <$tex_temporary_file>;
1217: close $tex_temporary_file;
1218: my $body_tex_file = join(' ',@tex_content_of_file);
1219: $texfile =~ s/\.tex$/aaaaa\.html/;
1220: $tex_temporary_file = IO::File->new('>'.$texfile);
1221: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
1222: print "<br /><br />";
1223: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1224: print "<b><big>"
1225: .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>');
1226: print "</big></b>\n";
1227: }
1228: return 1;
1229: }
1230: return 1; # NO log file issues at all.
1231: }
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