1: #!/usr/bin/perl
2: # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
3: #
4: # $Id: printout.pl,v 1.134 2008/03/18 10:29:56 foxr 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:
44: use strict;
45:
46: my $busy_wait_timeout = 30;
47:
48: # Determine if a user is operating as a student for this course/domain.
49: #Parameters:
50: # none
51: #Implicit:
52: # $env{request.role} contains the role under which this user operated this
53: # this request.
54: sub is_student {
55: return ($env{'request.role'}=~/^st\./);
56: }
57:
58: #
59: # Debugging: Dump the environment for debugging.
60: #
61: sub dumpenv {
62: print "<br />-------------------<br />";
63: foreach my $key (sort (keys %env)) {
64: print "<br />$key -> $env{$key}";
65: }
66: print "<br />-------------------<br />";
67: }
68:
69: #
70: # This sub sends a message to the appropriate person if there was an error
71: # rendering the latex At present, there's only one case to consider:
72: # a student printing inside a course results in messages to the course coordinator.
73: #Parmaeters:
74: # identifier - The unique identifier of this cgi request.
75: # badresource- Filepath to most likely failing
76: # logfile - The contents of the log file (included in the message).
77: # texfile - reference to an array containing the LaTeX input file
78: # (included in the message).
79: #Implicit inputs:
80: # From the environment:
81: # cgi.$identifier.user - User doing the printing.
82: # cgi.$identifier.domain - Domain the user is logged in on with printing.
83: # cgi.$identifier.courseid - Id of the course (if this is a course).
84: # cgi.$identifier.coursedom- Domain in which course was constituted.
85: # cgi.$identifier.resources - List of resource URL's for which the print
86: # was attempted.
87: #
88: sub send_error_mail {
89: my ($identifier, $badresource, $logfile, $texfile) = @_;
90: my $user = $env{"cgi.$identifier.user"};
91: my $domain = $env{"cgi.$identifier.domain"};
92: my $courseid = $env{"cgi.$identifier.courseid"};
93: my $coursedom= $env{"cgi.$identifier.coursedom"};
94: my $resources= $env{"cgi.$identifier.resources"};
95:
96: # resource file->URL
97: #
98: my $badurl = &Apache::lonnet::declutter($badresource);
99:
100: # &dumpenv();
101:
102:
103:
104: # Only continue if there is a user, domain, courseid, course domain
105: # and resources:
106:
107: if(defined($user) && defined($domain) && defined($courseid) &&
108: defined($coursedom) && defined($resources) ){
109:
110: # Only mail if the conditions are ripe for it:
111: # The user is a student in the course:
112: #
113:
114: if (&is_student()) {
115: # build the subject and message body:
116: # print "sending message to course coordinators.<br />";
117:
118: # Todo: Convert badurl into a url from file path:
119:
120: my $subject = "Error [$badurl] Print failed for $user".'@'.$domain;
121: my $message .= "Print failed to render LaTeX for $user".'@'."$domain\n";
122: $message .= " User was attempting to print: \n";
123: foreach my $resource (split(/:/,$resources)) {
124: $message .= " $resource\n";
125: }
126: $message .= "--------------------LaTeX logfile:------------ \n";
127: $message .= $logfile;
128: $message .= "-----------------LaTeX source file: ------------\n";
129:
130: foreach my $line (@$texfile) {
131: $message .= "$line\n";
132: }
133: my (undef, %receivers) = &Apache::lonmsg::decide_receiver(undef, 0,
134: 1,1,1);
135: # print "<br /> sending...section: $env{'request.course.sec'}";
136: foreach my $dest (keys %receivers) {
137: # print "<br /> dest is $dest";
138: my @destinfo = split(/:/,$dest);
139: my $user = $destinfo[0];
140: my $dom = $destinfo[1];
141:
142: &Apache::lonmsg::user_normal_msg($user, $dom,
143: $subject, $message);
144:
145: # No point in looking at the return status as there's no good
146: # error action I can think of right now (log maybe?).
147: }
148: }
149: }
150: }
151:
152: $|=1;
153: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
154: print <<END;
155: Content-type: text/html
156:
157: <html>
158: <head><title>Bad Cookie</title></head>
159: <body>
160: Your cookie information is incorrect.
161: </body>
162: </html>
163: END
164: return;
165: }
166:
167: my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
168: &Apache::lonlocal::get_language_handle();
169: &Apache::loncommon::content_type(undef,'text/html');
170: $env{'request.noversionuri'} = '/cgi-bin/printout.pl';
171: print(&Apache::loncommon::start_page('Creating PDF'));
172:
173: my $identifier = $ENV{'QUERY_STRING'};
174: my $texfile = $env{'cgi.'.$identifier.'.file'};
175: my $laystyle = $env{'cgi.'.$identifier.'.layout'};
176: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
177: my $paper = $env{'cgi.'.$identifier.'.paper'};
178: my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
179: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
180: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
181: my $advanced_role = $env{'cgi.'.$identifier.'.role'};
182: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
183: my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
184: my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'});
185:
186:
187: my @names_pack=();
188: if ($student_names=~/_END_/) {
189: @names_pack=split(/_ENDPERSON_/,$student_names);
190: }
191: if ($backref) {
192: print('<p>'.&mt("[_1]Return[_2] to editing resource.",
193: "<a href=\"$backref\"><b>","</b></a>").'</p>');
194: }
195: my $figfile = $texfile;
196: $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/;
197: my $duefile = $texfile;
198: $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/;
199:
200:
201: #-------------------------------------------------------------------------------------
202: #
203: # Each print may have associated with it a file that contains a set of figures
204: # that need to be converted to .eps from whatever form they were in when included
205: # in the resource. The name of the figure file is in $figfile. If it exists,
206: # it contains the names of the files that need to be converted, one per line.
207: #
208:
209: if (-e $figfile) {
210: # print "$figfile exists\n";
211: my %done_conversion;
212: my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
213: my @content_of_file = <$temporary_file>;
214: close $temporary_file;
215: my $noteps;
216: my %prog_state;
217: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Converting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80'); }
218: print('<br />');
219: foreach my $not_eps (@content_of_file) {
220: chomp($not_eps);
221: if ($not_eps ne '') {
222: $not_eps=~s|\/\.\/|\/|g;
223: if (!$done_conversion{$not_eps}) { # Only convert multiple includes once.
224: &convert_figure($not_eps);
225: $done_conversion{$not_eps} = 1;
226: }
227: }
228: }
229: if ($advanced_role) {
230: &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
231: }
232: unlink($figfile);
233: }
234: # End of figure conversion section:
235: #
236: #--------------------------------------------------------------------------------------------
237:
238:
239:
240:
241: #print "$texfile\n"; #name of the tex file for debugging only
242: my @texfile=($texfile);
243: if ($number_of_files>1) {
244: @texfile=();
245: for (my $i=1;$i<=$number_of_files;$i++) {
246: my $new_texfile=$texfile;
247: $new_texfile=~s/\.tex//;
248: $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
249: push @texfile,$new_texfile;
250: }
251: }
252:
253: my $ind=-1;
254: my %prog_state;
255: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$number_of_files,'inline','80'); }
256: print "<br />";
257: my $num_files = @texfile;
258: foreach $texfile (@texfile) {
259: my $status_statement='';
260: my $link_text='download PDF';
261: $ind++;
262: my @stud_info=split(/_END_/,$names_pack[$ind]);
263: my @tempo_array=split(/:/,$stud_info[0]);
264: my $name;
265: my $name_range='';
266: if ($tempo_array[3]) {
267: $name=$tempo_array[3];
268: ($name_range) = split(/,/,$name, 2);
269: } else {
270: $name=$tempo_array[0].'@'.$tempo_array[1];
271: $name_range = $tempo_array[0];
272: }
273: if (($name ne "") && ($name ne '@') ) { # Could be printing codes...
274: $link_text='<b>'.$name.'</b>';
275: $status_statement.=$name;
276: }
277: if ($#stud_info>0) {
278: @tempo_array=split(/:/,$stud_info[-1]);
279: if ($tempo_array[3]) {
280: $name=$tempo_array[3];
281: my ($lastname) = split(/,/, $name,2);
282: $name_range .= "-".$lastname;
283: } else {
284: $name=$tempo_array[0].'@'.$tempo_array[1];
285: $name_range .= '-'.$tempo_array[0];
286: }
287: if (($name ne "") && ($name ne '@')) {
288: $link_text.=' - <b>'.$name.'</b>';
289: $status_statement.=' - '.$name;
290:
291: }
292: }
293: if(($num_files > 1) && ($link_text eq 'download PDF')) { # Printing codes
294: $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
295: $status_statement .= basename($texfile);
296: }
297: $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
298: print "<br/>";
299: if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); }
300: # This little piece of dirt puts username ranges into the original tex
301: # Tex filename from which they'll propagate into the other filenames as well.
302: #
303: if (-e $texfile) {
304: if (($name_range ne '') && ($num_files > 1)) {
305: my $newtexfile = $texfile;
306: $newtexfile =~ s/\.tex/$name_range\.tex/;
307: rename($texfile, $newtexfile);
308: $texfile = $newtexfile;
309: }
310: $texfile =~ m/^(.*)\/([^\/]+)$/;
311: my $name_file = $2;
312: my $path_file = $1.'/';
313: chdir $path_file;
314: my $dvi_file= $name_file; $dvi_file =~ s/\.tex$/\.dvi/;
315: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
316: "for $status_statement now LaTeXing file",
317: \%prog_state,$dvi_file, $busy_wait_timeout);
318: if ($tableofcontents eq 'yes') {
319: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
320: "for $status_statement First LaTeX of file for table of contents",
321: \%prog_state,$dvi_file, $busy_wait_timeout);
322: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
323: "for $status_statement Second LaTeX of file for table of contents",
324: \%prog_state,$dvi_file,$busy_wait_timeout);
325: } #to create table of contents
326: my $idxname=$name_file;
327: $idxname=~s/\.tex$/\.idx/;
328: if ($tableofindex eq 'yes') {
329: &busy_wait_command("makeindex $idxname",
330: "making index file",
331: \%prog_state,$idxname);
332: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
333: "for $status_statement now LaTeXing file for index section",
334: \%prog_state,$dvi_file, $busy_wait_timeout);
335: } #to create index
336: #Do we have a latex error in the log file?
337: my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
338: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
339: my @content_of_file = <$temporary_file>;
340: close $temporary_file;
341: my $body_log_file = join(' ',@content_of_file);
342: $logfilename =~ s/\.log$/\.html/;
343: $temporary_file = IO::File->new('>'.$logfilename);
344: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
345: if ($body_log_file=~m/!\s+Emergency stop/) {
346: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
347: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
348: my $badresource;
349: my $badtext;
350: if ($whereitbegins!=-1 and $whereitends!=-1) {
351: $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
352: $whereitbegins = rindex $badtext,'located in';
353: if ($whereitbegins != -1) {
354:
355: $badresource = substr($badtext, $whereitbegins+27,
356: length($badtext) - $whereitbegins - 48);
357: # print "<br />failing resourcename: $badresource<br />";
358: }
359: }
360:
361: if ($advanced_role) {
362: #LaTeX failed to parse tex file
363: print "<h2>LaTeX could not successfully parse your tex file.</h2>";
364: print "It probably has errors in it.<br />";
365: print "With very high probability this error occured in ".$badtext."<br /><br />";
366: print "Here are the error messages in the LaTeX log file<br /><pre>";
367:
368: my $sygnal = 0;
369: for (my $i=0;$i<=$#content_of_file;$i++) {
370: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
371: $sygnal = 1;
372: }
373: if ($content_of_file[$i]=~m/Here is how much of/) {
374: $sygnal = 0;
375: }
376: if ($sygnal) {
377: print "$content_of_file[$i]";
378: }
379: }
380: print "</pre>\n";
381: # print "<br /> Advanced role <br />";
382: print "<b><big>The link to ";
383: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
384: print "<a href=\"$logfilename\">Your log file </a></big></b>";
385: print "\n";
386: #link to original LaTeX file
387: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
388: my @tex_content_of_file = <$tex_temporary_file>;
389: close $tex_temporary_file;
390: my $body_tex_file = join(' ',@tex_content_of_file);
391: $texfile =~ s/\.tex$/aaaaa\.html/;
392: $tex_temporary_file = IO::File->new('>'.$texfile);
393: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
394: print "<br /><br />";
395: print "<b><big>The link to ";
396: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
397: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
398: print "\n";
399: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
400: print ("$help_text");
401:
402: } else { # Student role...
403: # at this point:
404: # $body_log_file - contains the log file.
405: # $name_file - is the name of the LaTeX file.
406: # $identifier - is the unique LaTeX identifier.l
407:
408: print "<br />There are errors in $badtext";
409: print "<br />These errors prevent this resource from printing correctly";
410: my $tex_handle = IO::File->new($name_file);
411: my @tex_contents = <$tex_handle>;
412: &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
413: print "<br />A message has been sent to the instructor describing this failure<br />";
414: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
415: print ("$help_text");
416:
417: }
418:
419: } elsif ($body_log_file=~m/<inserted text>/) {
420: my $whereitbegins = index $body_log_file,'<inserted text>';
421: print "You are running LaTeX in <b>batch mode</b>.";
422: while ($whereitbegins != -1) {
423: my $tempobegin=$whereitbegins;
424: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
425: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
426: print "<br />It has found an error in".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)." <br /> and corrected it.\n";
427: print "Usually this correction is valid but you probably need to check the indicated resource one more time and implement neccessary corrections by yourself.\n";
428: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
429: }
430: $name_file =~ s/\.tex/\.dvi/;
431: my $new_name_file = $name_file;
432: $new_name_file =~ s/\.dvi/\.ps/;
433: my $papera=$paper;
434: if ($papera eq 'letter') {$papera='';}
435: if ($papera ne '') {$papera='-t'.$papera;}
436: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
437: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
438: "for $status_statement now Converting to PS",
439: \%prog_state,$new_name_file);
440: if (-e $new_name_file) {
441: my $latex_file = $name_file;
442: $latex_file =~ s/\.dvi/\.tex/;
443: &repaginate($new_name_file, $latex_file, $numberofcolumns);
444: #
445: # Now have to re-latex, re dvips again to
446: # get the repaginated postscript.
447: #
448: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
449: "for $status_statement first latex to repaginate",
450: \%prog_state, $name_file,$busy_wait_timeout);
451: if ($tableofcontents eq 'yes') {
452: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
453: "for $status_statement second latex to repaginate",
454: \%prog_state, $name_file,$busy_wait_timeout);
455: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
456: "for $status_statement third latex to repaginate",
457: \%prog_state, $name_file,$busy_wait_timeout);
458: }
459: if ($tableofindex eq 'yes') {
460: my $idxname = $latex_file;
461: $idxname =~ s/\.tex$/\.idx/;
462: &busy_wait_command("makeindex $idxname",
463: "Re-creating index file",
464: \%prog_state, $idxname);
465: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
466: "for $status_statement now Recreting index (latex)",
467: \%prog_state, $dvi_file,$busy_wait_timeout);
468:
469: }
470: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
471: "for $status_statement dvips to repaginate",
472: \%prog_state, $new_name_file);
473: #
474: # One last little hinky kinky thing.
475: # It's just possible that some fonts could not be maded
476: # at the resolution of the pdf print driver.
477: # In that case a file called missfont.log will have been
478: # created that will contain the commands that were attempted
479: # to create the missing fonts. If we basically
480: # take all the 8000 strings in that file, and
481: # replace them with 600 (the ljfour resolution)
482: # run the commands in that file and redvips,
483: # we'll be able to print the missing glyphs at 600dpi.
484: #
485: # Supposedly it is possible to tune TeX/Metafont to do this
486: # right but I failed to get that to work when following the
487: # docs at the tug site, hence this rather kludgey fix.
488: #
489: # We make the (I think) reasonable assumption that
490: # missing glyphs won't change the pagination and I think
491: # this is true because TeX/dvips will leave a space
492: # instead of these glyphs based on the font metrics
493: # (fancy way to say there will be a blank the size of the missing
494: # glyphs).
495: #
496: my $print_directory = dirname($name_file);
497: my $missfonts_file = $print_directory."/missfont.log";
498: #print("<br /> Missing fonts file is: $missfonts_file");
499: if (-e $missfonts_file) {
500: #print("<br />Missing fonts file exists\n");
501: &create_missing_fonts($missfonts_file,\%prog_state);
502: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
503: "for $status_statement dvips generated missing fonts",
504: \%prog_state, $new_name_file);
505: }
506:
507: #
508: print "\n<h1>PDF output file (see link below)</h1>\n";
509: $new_name_file =~ m/^(.*)\./;
510: my $ps_file = my $tempo_file = $1.'temporar.ps';
511: my $pdf_file = $1.'.pdf';
512: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
513: my $papera=$paper;
514: if ($papera eq 'letter') {$papera='';}
515: if ($papera ne '') {$papera='-p'.$papera;}
516: $comma = "psnup $papera -2 -s1.0 $new_name_file";
517: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
518: "for $status_statement now Modifying PS layout",
519: \%prog_state,$tempo_file);
520: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
521: my $papera=$paper;
522: if ($papera eq 'letter') {$papera='';}
523: if ($papera ne '') {$papera='-p'.$papera;}
524: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
525: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
526: "for $status_statement now Modifying PS layout",
527: \%prog_state,$tempo_file);
528:
529: } else {
530: $ps_file=$new_name_file;
531: }
532: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
533: "for $status_statement now Converting PS to PDF",
534: \%prog_state, $pdf_file);
535:
536: my $texlog = $texfile;
537: my $texaux = $texfile;
538: my $texdvi = $texfile;
539: my $texps = $texfile;
540: $texlog =~ s/\.tex/\.log/;
541: $texaux =~ s/\.tex/\.aux/;
542: $texdvi =~ s/\.tex/\.dvi/;
543: $texps =~ s/\.tex/\.ps/;
544: my @garb = ($texaux,$texdvi,$texps);
545: # unlink @garb;
546: unlink($duefile);
547: print "<a href=\"/prtspool/$pdf_file\">Your PDF document</a>";
548: unlink($missfonts_file);
549:
550: }
551: if ($advanced_role) {
552: print "<br /><br />";
553: print "<b><big>The link to ";
554: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
555: print "<a href=\"$logfilename\">Your log file </a></big></b>";
556: print "\n";
557: #link to original LaTeX file
558: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
559: my @tex_content_of_file = <$tex_temporary_file>;
560: close $tex_temporary_file;
561: my $body_tex_file = join(' ',@tex_content_of_file);
562: $texfile =~ s/\.tex$/aaaaa\.html/;
563: $tex_temporary_file = IO::File->new('>'.$texfile);
564: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
565: print "<br /><br />";
566: print "<b><big>The link to ";
567: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
568: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
569: print "\n";
570: }
571:
572: } else {
573: #LaTeX successfully parsed tex file
574: $name_file =~ s/\.tex/\.dvi/;
575: my $new_name_file = $name_file;
576: $new_name_file =~ s/\.dvi/\.ps/;
577: my $papera=$paper;
578: if ($papera eq 'letter') {$papera='';}
579: if ($papera ne '') {$papera='-t'.$papera;}
580: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
581: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
582: "for $status_statement now Converting to PS",
583: \%prog_state,$new_name_file);
584: #
585: # One last little hinky kinky thing.
586: # It's just possible that some fonts could not be maded
587: # at the resolution of the pdf print driver.
588: # In that case a file called missfont.log will have been
589: # created that will contain the commands that were attempted
590: # to create the missing fonts. If we basically
591: # take all the 8000 strings in that file, and
592: # replace them with 600 (the ljfour resolution)
593: # run the commands in that file and redvips,
594: # we'll be able to print the missing glyphs at 600dpi.
595: #
596: # Supposedly it is possible to tune TeX/Metafont to do this
597: # right but I failed to get that to work when following the
598: # docs at the tug site, hence this rather kludgey fix.
599: #
600: # We make the (I think) reasonable assumption that
601: # missing glyphs won't change the pagination and I think
602: # this is true because TeX/dvips will leave a space
603: # instead of these glyphs based on the font metrics
604: # (fancy way to say there will be a blank the size of the missing
605: # glyphs).
606: #
607: my $print_directory = dirname($name_file);
608: my $missfonts_file = $print_directory."/missfont.log";
609: #print("<br /> Missing fonts file is: $missfonts_file");
610: if (-e $missfonts_file) {
611: #print("<br />Missing fonts file exists\n");
612: &create_missing_fonts($missfonts_file,\%prog_state);
613: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
614: "for $status_statement dvips generated missing fonts",
615: \%prog_state, $new_name_file);
616: }
617: if (-e $new_name_file) {
618: my $latex_file = $name_file;
619: $latex_file =~ s/\.dvi/\.tex/;
620: &repaginate($new_name_file, $latex_file, $numberofcolumns);
621: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
622: "for $status_statement first latex to repaginate",
623: \%prog_state, $name_file, $busy_wait_timeout);
624: if ($tableofcontents eq 'yes') {
625: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
626: "for $status_statement second latex to repaginate",
627: \%prog_state, $name_file, $busy_wait_timeout);
628: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
629: "for $status_statement third latex to repaginate",
630: \%prog_state, $name_file, $busy_wait_timeout);
631: }
632: if ($tableofindex eq 'yes') {
633: my $idxname = $latex_file;
634: $idxname =~ s/\.tex$/\.idx/;
635: &busy_wait_command("makeindex $idxname",
636: "Re-creating index file",
637: \%prog_state, $idxname);
638: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
639: "for $status_statement now Recreting index (latex)",
640: \%prog_state, $dvi_file, $busy_wait_timeout);
641: }
642: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
643: "for $status_statement dvips to repaginate",
644: \%prog_state, $new_name_file);
645:
646: print "<br />";
647: $new_name_file =~ m/^(.*)\./;
648: my $ps_file = my $tempo_file = $1.'temporar.ps';
649: my $pdf_file = $1.'.pdf';
650: $papera=~s/t/p/;
651: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
652: $comma = "psnup $papera -2 -s1.0 $new_name_file";
653: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
654: "for $status_statement now Modifying PS layout",
655: \%prog_state,$tempo_file);
656: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
657: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
658: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
659: "for $status_statement now Modifying PS layout",
660: \%prog_state,$tempo_file);
661: } else {
662: $ps_file=$new_name_file;
663: }
664: my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
665: 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
666: 'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
667: 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
668: 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
669: 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
670: 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
671: 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
672: };
673: if ($paper ne 'letter') {
674: open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n";
675: my $new_ps_file='new'.$ps_file;
676: open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n";
677: print FFHS $addtoPSfile->{$paper}."\n";
678: while (<FFH>) {
679: print FFHS $_;
680: }
681: close(FFH);
682: close(FFHS);
683: $ps_file=$new_ps_file;
684: }
685: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
686: "for $status_statement now Converting PS to PDF",
687: \%prog_state,$pdf_file);
688:
689: my $texlog = $texfile;
690: my $texaux = $texfile;
691: my $texdvi = $texfile;
692: my $texps = $texfile;
693: $texlog =~ s/\.tex/\.log/;
694: $texaux =~ s/\.tex/\.aux/;
695: $texdvi =~ s/\.tex/\.dvi/;
696: $texps =~ s/\.tex/\.ps/;
697: my @garb = ($texlog,$texaux,$texdvi,$texps);
698: # unlink @garb;
699: unlink($duefile);
700: print "<a href=\"/prtspool/$pdf_file\">$link_text - click here to download pdf</a>";
701: print "\n";
702: }
703: unlink($missfonts_file);
704:
705: }
706: } else {
707: print "LaTeX file $texfile was not created successfully";
708: }
709: }
710: print "<br />";
711: if ($number_of_files>1) {
712: my $zipfile=$texfile[0];
713: $zipfile=~s/\.tex/\.zip/;
714: my $statement="zip $zipfile";
715: foreach my $file (@texfile) {
716: $file=~s/\.tex/.\pdf/;
717: $statement.=' '.$file;
718: }
719: print("<pre>Zip Output:\n");
720: system($statement);
721: print("</pre>");
722: $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
723: print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";
724: }
725: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
726: print(&Apache::loncommon::end_page());
727: my $done;
728:
729: sub REAPER {
730: $done=1;
731: }
732: #
733: # Execute a command updating the status window as the command's
734: # output file builds up (at intervals of a second).
735: #
736: # If the timeout argument defined, then if that many seconds
737: # elapses without an increase in the size of the output file,
738: # the command will be killed (this deals with the case when
739: # latex crawls into an infinite loop).
740: #
741: sub busy_wait_command {
742: my ($command,$message,$progress_win,$output_file, $timeout)=@_;
743:
744: $SIG{CHLD} = \&REAPER;
745: $done=0;
746: my $pid=open(CMD,"$command |");
747: if ($advanced_role) {
748: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
749: }
750: my $last_size = 0;
751: my $unchanged_time = 0;
752: while(!$done) {
753: sleep 1;
754: my $extra_msg;
755: if ($output_file) {
756: my $size=(stat($output_file))[7];
757: $extra_msg=", $size bytes generated";
758: if ($size == $last_size) {
759: $unchanged_time++;
760: if ($timeout && ($unchanged_time > $timeout)) {
761: print "<h1>Operation timed out!</h1>\n";
762: print "<p>Executing $command, the output file $output_file did not grow\n";
763: print "after $timeout seconds. This <em>may</em> indicate $command\n";
764: print "is in an infinite loop.\n";
765: print "See if printing fewer copies helps. Please contact LON-CAPA\n";
766: print "support about this in any event.";
767: print "</p>";
768: kill(9, $pid); # Reaper will do the rest...I hope there's errors in the log.
769: }
770: } else {
771: $last_size = $size;
772: $unchanged_time = 0;
773: }
774: }
775: if ($advanced_role) {
776: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,
777: $message.$extra_msg);
778: }
779: }
780: $SIG{CHLD}='IGNORE';
781: close(CMD);
782: }
783:
784: # Repagninate
785: # What we need to do:
786: # - Count the number of pages in each student.
787: # - Rewrite the latex file replacing the \specials that
788: # mark the end of student with an appropriate number of newlines.
789: # parameters:
790: # psfile - Postscript filename
791: # latexfile - LaTeX filename
792: # columns - number of columns.
793: sub repaginate {
794:
795: # We will try to do this in 2 passes through the postscript since
796: # the postscript is potentially large, to do 2 passes, the first pass
797: # must be able to calculate the total number of document pages so that
798: # at the beginning of the second pass we already know how to replace
799: # %%Pages:
800:
801: # Figure out
802: # 1. Number of pages in the document
803: # 2. Maximum number of pages in a student
804: # 3. Number of pages in each student.
805:
806: my ($postscript_filename, $latex_filename, $num_columns) = @_;
807: open(PSFILE, "<$postscript_filename");
808: my $line;
809: my $total_pages; # Total pages in document.
810: my $seen_pages = 0; # There are several %%Pages only the first is useful
811: my @pages_in_student; # For each student his/her initial page count.
812: my $max_pages = 0; # Pages in 'longest' student.
813: my $page_number = 0;
814: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
815: &mt("Counting pages for student: [_1]",1));
816:
817: while ($line = <PSFILE>) {
818:
819: # Check for total pages (%%Pages:)
820:
821: if (($line =~ /^%%Pages:/) && (!$seen_pages)) {
822: my @pageinfo = split(/ /,$line);
823: $total_pages = $pageinfo[1];
824: $seen_pages = 1;
825: }
826: # Check for %%Page: n m $page_number will be the
827: # biggest of these until we see an endofstudent.
828: # Note that minipages generate spurious %Page: 1 1's so
829: # we only are looking for the largest n (n is page number at the
830: # bottom of the page, m the page number within the document.
831: #
832:
833: if ($line =~ /^%%Page:\s+\d+\s+\d+/) {
834: my @pageinfo = split(/\s+/, $line);
835: if ($page_number < $pageinfo[1]) {
836: $page_number = $pageinfo[1];
837: } elsif ($pageinfo[2] ne 1) {
838: # current page count reset, and it's not because of a
839: # minipage
840: # - save the page_number, reset and, if necessary
841: # update max_pages.
842: push(@pages_in_student, $page_number);
843: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
844: &mt("Counting pages for student: [_1]", scalar(@pages_in_student)));
845: if ($page_number > $max_pages) {
846: $max_pages = $page_number;
847: }
848: $page_number = $pageinfo[1];
849: }
850: }
851:
852:
853: }
854: # file ended so one more student
855: push(@pages_in_student, $page_number);
856: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
857: &mt("Counting pages for student: [_1]",scalar(@pages_in_student)));
858: if ($page_number > $max_pages) {
859: $max_pages = $page_number;
860: }
861: $page_number = 0;
862:
863: close(PSFILE);
864:
865: # If 2 columns, max_pages must go to an even number of columns:
866:
867:
868: if ($num_columns == 2) {
869: if ($max_pages % 2) {
870: $max_pages++;
871: }
872: }
873:
874: # Now rewrite the LaTex file, substituting our \special
875: # with an appropriate number of \newpage directives.
876:
877: my $outfilename = $latex_filename."temp";
878:
879: open(LATEXIN, "<$latex_filename");
880: open(LATEXOUT, ">$outfilename");
881:
882:
883: my $student_number = 0; # Index of student we're working on.
884: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
885: "Repaginating student ".$student_number+1);
886:
887: while (my $line = <LATEXIN>) {
888: if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {
889: # only end of student stamp if next line is ENDOFSTUDENTSTAMP:
890:
891:
892: # End of student replace with 0 or more newpages.
893:
894: my $addlines = $max_pages - $pages_in_student[$student_number];
895: while($addlines) {
896: print LATEXOUT '\clearpage \strut \clearpage';
897:
898: $addlines--;
899: }
900:
901: $student_number++;
902: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
903: "Repaginating student ".$student_number+1);
904:
905: } else {
906: print LATEXOUT $line;
907: }
908: }
909:
910: close(LATEXIN);
911: close(LATEXOUT);
912: rename($outfilename, $latex_filename);
913:
914: }
915:
916: #
917: # Create missing fonts given a latex missfonts.log file.
918: # This file will have lines like:
919: #
920: # mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 tcrm0500
921: #
922: # We want to execute those lines with the 8000's changed to 600's
923: # in order to match the resolution of the ljfour printer.
924: # Of course if some wiseguy has changed the default printer from ljfour
925: # in the dvips's config.ps file that will break so we'll also
926: # ensure that --mfmode is ljfour.
927: #
928: sub create_missing_fonts {
929: my ($fontfile, $state) = @_;
930:
931: # Open and read in the font file..we'll read it into the array
932: # font_commands.
933: #
934: open(my $font_handle, $fontfile);
935: my @font_commands = <$font_handle>;
936:
937: # make the list contain each command only once
938: my %uniq;
939: @font_commands = map { $uniq{$_}++ == 0 ? $_ : () } @font_commands;
940:
941: # Now process each command replacing the appropriate 8000's with
942: # 600's ensuring that font names with 8000's in them are not corrupted.
943: # and if the --mfmode is not ljfour we turn it into ljfour.
944: # Then we execute the command.
945: #
946:
947: foreach my $command (@font_commands) {
948: #print("<br />Raw command: $command");
949: $command =~ s/ 8000/ 600/g; # dpi directives.
950: $command =~ s/\/8000/\/600/g; # mag directives.
951: #print("<br />After dpi replacements: $command");
952:
953: my @cmdarray = split(/ /,$command);
954: for (my $i =0; $i < scalar(@cmdarray); $i++) {
955: if ($cmdarray[$i] eq '--mfmode') {
956: $cmdarray[$i+1] = "ljfour";
957: }
958: }
959: #print("<br /> before reassembly : (@cmdarray)");
960: $command = join(" ", (@cmdarray));
961:
962: #print("<br />Creating fonts via command: $command");
963: &busy_wait_command("$command 1>/dev/null 2>/dev/null",
964: "Creating missing font",
965: $state);
966:
967: }
968:
969: }
970: #
971: # Convert a figure file to encapsulated postscript:
972: # At present, this is using a lot of file scoped globals to pass data around.
973: # Parameters:
974: # not_eps - The name of the file to convert which, presumably, is not
975: # already an eps file.
976: #
977: sub convert_figure {
978: my ($not_eps) = @_;
979:
980: my $status_statement='EPS picture for '.$not_eps;
981: my $eps_f = $not_eps;
982:
983: if ($eps_f=~/\/home\/([^\/]+)\/public_html\//) {
984: $eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;
985: } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) {
986: $eps_f=~ s/$perlvar{'lonDocRoot'}\/res\/(.+)/$1/;
987: } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) {
988: $eps_f=~ s/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/$1\/$2/;
989: }
990:
991: $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
992:
993: # Spaces are problematic for system commands and LaTeX, replace with _
994:
995: $eps_f =~ s/ /\_/g;
996:
997: #
998: # If the file is already an .eps or .ps file (eps_f still has the original
999: # file type),
1000: # We really just need to copy it from where it was to prtspool
1001: # but with the spaces substituted to _'s.
1002: #
1003: my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);
1004: if ($sext =~/ps$/i) {
1005: &File::Path::mkpath($path,0,0777);
1006: copy("$not_eps", "$eps_f");
1007: } else {
1008:
1009: $eps_f .= '.eps'; # Just append the eps ext.
1010: my $path= &dirname($eps_f);
1011: &File::Path::mkpath($path,0,0777);
1012: $not_eps =~ s/^\s+//;
1013: $not_eps =~ s/\s+$//;
1014: $not_eps =~ s/ /\\ /g;
1015: if ($advanced_role) {
1016: my $prettyname=$not_eps;
1017: $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;
1018: $prettyname=~s|$perlvar{'lonDocRoot'}/|/|;
1019: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
1020: 'Converting to EPS '.$prettyname);
1021: }
1022: system("convert $not_eps $eps_f");
1023:
1024: if (not -e $eps_f) {
1025: # converting an animated gif creates either:
1026: # anim.gif.eps.0
1027: # or
1028: # anim.gif-0.eps
1029: for (my $i=0;$i<10000;$i++) {
1030: if (-e $eps_f.'.'.$i) {
1031: rename($eps_f.'.'.$i, $eps_f);
1032: last;
1033: }
1034: my $anim_eps = $eps_f;
1035: $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
1036: if (-e $anim_eps) {
1037: rename($anim_eps, $eps_f);
1038: last;
1039: }
1040: }
1041: }
1042:
1043: # imagemagick 6.2.0-6.2.7 fails to properly handle
1044: # convert anim.gif anim.gif.eps
1045: # it creates anim.eps instead.
1046: if (not -e $eps_f) {
1047: my $eps_f2 = $eps_f;
1048: $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
1049: if(-e $eps_f2) {
1050: rename($eps_f2,$eps_f);
1051: }
1052: }
1053: }
1054:
1055: }
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