1: #!/usr/bin/perl
2: # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
3: #
4: #
5: # Copyright Michigan State University Board of Trustees
6: #
7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
8: #
9: # LON-CAPA is free software; you can redistribute it and/or modify
10: # it under the terms of the GNU General Public License as published by
11: # the Free Software Foundation; either version 2 of the License, or
12: # (at your option) any later version.
13: #
14: # LON-CAPA is distributed in the hope that it will be useful,
15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: # GNU General Public License for more details.
18: #
19: # You should have received a copy of the GNU General Public License
20: # along with LON-CAPA; if not, write to the Free Software
21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: #
23: # /home/httpd/html/adm/gpl.txt
24: #
25: # http://www.lon-capa.org/
26: #
27:
28: use lib '/home/httpd/lib/perl';
29: use LONCAPA::loncgi;
30: use File::Path;
31: use File::Basename;
32: use IO::File;
33: use Image::Magick;
34: use Apache::lonhtmlcommon();
35: use Apache::lonnet;
36: use Apache::loncommon();
37: use Apache::lonlocal;
38: use Apache::lonmsg();
39: use LONCAPA::Enrollment;
40:
41: use strict;
42:
43:
44: # Determine if a user is operating as a student for this course/domain.
45: #Parameters:
46: # none
47: #Implicit:
48: # $env{request.role} contains the role under which this user operated this
49: # this request.
50: sub is_student {
51: return ($env{'request.role'}=~/^st\./);
52: }
53:
54: #
55: # Debugging: Dump the environment for debugging.
56: #
57: sub dumpenv {
58: print "<br />-------------------<br />";
59: foreach my $key (sort (keys %env)) {
60: print "<br />$key -> $env{$key}";
61: }
62: print "<br />-------------------<br />";
63: }
64:
65: #
66: # This sub sends a message to the appropriate person if there was an error
67: # rendering the latex At present, there's only one case to consider:
68: # a student printing inside a course results in messages to the course coordinator.
69: #Parmaeters:
70: # identifier - The unique identifier of this cgi request.
71: # badresource- Filepath to most likely failing
72: # logfile - The contents of the log file (included in the message).
73: # texfile - reference to an array containing the LaTeX input file
74: # (included in the message).
75: #Implicit inputs:
76: # From the environment:
77: # cgi.$identifier.user - User doing the printing.
78: # cgi.$identifier.domain - Domain the user is logged in on with printing.
79: # cgi.$identifier.courseid - Id of the course (if this is a course).
80: # cgi.$identifier.coursedom- Domain in which course was constituted.
81: # cgi.$identifier.resources - List of resource URL's for which the print
82: # was attempted.
83: #
84: sub send_error_mail {
85: my ($identifier, $badresource, $logfile, $texfile) = @_;
86: my $user = $env{"cgi.$identifier.user"};
87: my $domain = $env{"cgi.$identifier.domain"};
88: my $courseid = $env{"cgi.$identifier.courseid"};
89: my $coursedom= $env{"cgi.$identifier.coursedom"};
90: my $resources= $env{"cgi.$identifier.resources"};
91:
92: # resource file->URL
93: #
94: my $badurl = &Apache::lonnet::declutter($badresource);
95:
96: # &dumpenv();
97:
98:
99:
100: # Only continue if there is a user, domain, courseid, course domain
101: # and resources:
102:
103: if(defined($user) && defined($domain) && defined($courseid) &&
104: defined($coursedom) && defined($resources) ){
105:
106: # Only mail if the conditions are ripe for it:
107: # The user is a student in the course:
108: #
109:
110: if (&is_student()) {
111: # build the subject and message body:
112: # print "sending message to course coordinators.<br />";
113:
114: # Todo: Convert badurl into a url from file path:
115:
116: my $subject = "Error [$badurl] Print failed for $user".'@'.$domain;
117: my $message .= "Print failed to render LaTeX for $user".'@'."$domain\n";
118: $message .= " User was attempting to print: \n";
119: foreach my $resource (split(/:/,$resources)) {
120: $message .= " $resource\n";
121: }
122: $message .= "--------------------LaTeX logfile:------------ \n";
123: $message .= $logfile;
124: $message .= "-----------------LaTeX source file: ------------\n";
125:
126: foreach my $line (@$texfile) {
127: $message .= "$line\n";
128: }
129: my (undef, %receivers) = &Apache::lonfeedback::decide_receiver(undef, 0,
130: 1,1,1);
131: # print "<br /> sending...section: $env{'request.course.sec'}";
132: foreach my $dest (keys %receivers) {
133: # print "<br /> dest is $dest";
134: my @destinfo = split(/:/,$dest);
135: my $user = $destinfo[0];
136: my $dom = $destinfo[1];
137:
138: &Apache::lonmsg::user_normal_msg($user, $dom,
139: $subject, $message);
140:
141: # No point in looking at the return status as there's no good
142: # error action I can think of right now (log maybe?).
143: }
144: }
145: }
146: }
147:
148: $|=1;
149: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
150: print <<END;
151: Content-type: text/html
152:
153: <html>
154: <head><title>Bad Cookie</title></head>
155: <body>
156: Your cookie information is incorrect.
157: </body>
158: </html>
159: END
160: return;
161: }
162: &Apache::lonlocal::get_language_handle();
163: &Apache::loncommon::content_type(undef,'text/html');
164:
165: print(&Apache::loncommon::start_page('Creating PDF'));
166:
167: my $identifier = $ENV{'QUERY_STRING'};
168: my $texfile = $env{'cgi.'.$identifier.'.file'};
169: my $laystyle = $env{'cgi.'.$identifier.'.layout'};
170: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
171: my $paper = $env{'cgi.'.$identifier.'.paper'};
172: my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
173: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
174: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
175: my $advanced_role = $env{'cgi.'.$identifier.'.role'};
176: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
177: my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
178: my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'});
179:
180:
181: my @names_pack=();
182: if ($student_names=~/_END_/) {
183: @names_pack=split(/_ENDPERSON_/,$student_names);
184: }
185:
186: print "<a href=\"$backref\"><b>Return</b></a> to last resource.<br /><br />";
187:
188: my $figfile = $texfile;
189: $figfile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.dat/;
190: my $duefile = $texfile;
191: $duefile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.due/;
192: #do we have figures?
193: # print "Figure file: $figfile\n";
194: if (-e $figfile) {
195: # print "$figfile exists\n";
196: my %done_conversion;
197: my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
198: my @content_of_file = <$temporary_file>;
199: close $temporary_file;
200: my $noteps;
201: my %prog_state;
202: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Coverting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80'); }
203: print('<br />');
204: foreach my $not_eps (@content_of_file) {
205: chomp($not_eps);
206: if ($not_eps ne '') {
207: # print "Converting $not_eps"; # Debugging.
208: my $status_statement='EPS picture for '.$not_eps;
209: # print "$status_statement\n";
210: $not_eps=~s|\/\.\/|\/|g;
211: my $eps_f = $not_eps;
212: # $eps_f =~ s/\.[^.]*$/\.eps/i;
213: $eps_f .= '.eps'; # Just append the eps ext.
214: if ($eps_f=~/\/home\/([^\/]+)\/public_html\//) {
215: $eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;
216: $eps_f = '/home/httpd/prtspool/'.$eps_f;
217: } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\//) {
218: $eps_f=~m/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\/(.+)/;
219: $eps_f = '/home/httpd/prtspool/'.$1;
220: } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\//) {
221: $eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/;
222: $eps_f = '/home/httpd/prtspool/'.$1.'/'.$2;
223: }
224: $eps_f =~ s/ /\_/g; # Spaces are problematic for system commands and LaTeX.
225: my $path=$eps_f;
226: $path =~ s/\/([^\/]+)\.eps$//;
227: # print "Final file path: $path "; # Debugging
228: File::Path::mkpath($path,0,0777);
229: $not_eps =~ s/^\s+//;
230: $not_eps =~ s/\s+$//;
231: $not_eps =~ s/ /\\ /g;
232: if ( exists($done_conversion{$not_eps})) { next; }
233: if ($advanced_role) {
234: my $prettyname=$not_eps;
235: $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;
236: $prettyname=~s|$Apache::lonnet::perlvar{'lonDocRoot'}/|/|;
237: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
238: 'Converting to EPS '.$prettyname);
239: }
240: $done_conversion{$not_eps}=1;
241: # print "Converting $not_eps -> $eps_f"; # Debugging
242: system("convert $not_eps $eps_f");
243: # check is eps exist in prtspool
244: if (not -e $eps_f) {
245: # converting an animated gif creates either:
246: # anim.gif.eps.0
247: # or
248: # anim.gif-0.eps
249: for (my $i=0;$i<10000;$i++) {
250: if (-e $eps_f.'.'.$i) {
251: rename($eps_f.'.'.$i, $eps_f);
252: last;
253: }
254: my $anim_eps = $eps_f;
255: $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
256: if (-e $anim_eps) {
257: rename($anim_eps, $eps_f);
258: last;
259: }
260: }
261: }
262: # imagemagick 6.2.0-6.2.7 fails to properly handle
263: # convert anim.gif anim.gif.eps
264: # it creates anim.eps instead.
265: if (not -e $eps_f) {
266: my $eps_f2 = $eps_f;
267: $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
268: if(-e $eps_f2) {
269: rename($eps_f2,$eps_f);
270: }
271: }
272:
273: }
274: }
275: if ($advanced_role) {
276: &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
277: }
278: unlink($figfile);
279: }
280: #print "$texfile\n"; #name of the tex file for debugging only
281: my @texfile=($texfile);
282: if ($number_of_files>1) {
283: @texfile=();
284: for (my $i=1;$i<=$number_of_files;$i++) {
285: my $new_texfile=$texfile;
286: $new_texfile=~s/\.tex//;
287: $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
288: push @texfile,$new_texfile;
289: }
290: }
291:
292: my $ind=-1;
293: my %prog_state;
294: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$number_of_files,'inline','80'); }
295: print "<br />";
296: my $num_files = @texfile;
297: foreach $texfile (@texfile) {
298: my $status_statement='';
299: my $link_text='download PDF';
300: $ind++;
301: my @stud_info=split(/_END_/,$names_pack[$ind]);
302: my @tempo_array=split(/:/,$stud_info[0]);
303: my $name;
304: my $name_range='';
305: if ($tempo_array[3]) {
306: $name=$tempo_array[3];
307: ($name_range) = split(/,/,$name, 2);
308: } else {
309: $name=$tempo_array[0].'@'.$tempo_array[1];
310: $name_range = $tempo_array[0];
311: }
312: if (($name ne "") && ($name ne '@') ) { # Could be printing codes...
313: $link_text='<b>'.$name.'</b>';
314: $status_statement.=$name;
315: }
316: if ($#stud_info>0) {
317: @tempo_array=split(/:/,$stud_info[-1]);
318: if ($tempo_array[3]) {
319: $name=$tempo_array[3];
320: my ($lastname) = split(/,/, $name,2);
321: $name_range .= "-".$lastname;
322: } else {
323: $name=$tempo_array[0].'@'.$tempo_array[1];
324: $name_range .= '-'.$tempo_array[0];
325: }
326: if (($name ne "") && ($name ne '@')) {
327: $link_text.=' - <b>'.$name.'</b>';
328: $status_statement.=' - '.$name;
329:
330: }
331: }
332: if(($num_files > 1) && ($link_text eq 'download PDF')) { # Printing codes
333: $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
334: $status_statement .= basename($texfile);
335: }
336: $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
337: print "<br/>";
338: if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); }
339: # This little piece of dirt puts username ranges into the original tex
340: # Tex filename from which they'll propagate into the other filenames as well.
341: #
342: if (-e $texfile) {
343: if (($name_range ne '') && ($num_files > 1)) {
344: my $newtexfile = $texfile;
345: $newtexfile =~ s/\.tex/$name_range\.tex/;
346: rename($texfile, $newtexfile);
347: $texfile = $newtexfile;
348: }
349: $texfile =~ m/^(.*)\/([^\/]+)$/;
350: my $name_file = $2;
351: my $path_file = $1.'/';
352: chdir $path_file;
353: my $dvi_file= $name_file; $dvi_file =~ s/\.tex/$name_range\.dvi/;
354: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
355: "for $status_statement now LaTeXing file",
356: \%prog_state,$dvi_file);
357: if ($tableofcontents eq 'yes') {
358: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
359: "for $status_statement First LaTeX of file for table of contents",
360: \%prog_state,$dvi_file);
361: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
362: "for $status_statement Second LaTeX of file for table of contents",
363: \%prog_state,$dvi_file);
364: } #to create table of contents
365: my $idxname=$name_file;
366: $idxname=~s/\.tex$/\.idx/;
367: if ($tableofindex eq 'yes') {
368: &busy_wait_command("makeindex $idxname",
369: "making index file",
370: \%prog_state,$idxname);
371: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
372: "for $status_statement now LaTeXing file for index section",
373: \%prog_state,$dvi_file);
374: } #to create index
375: #Do we have a latex error in the log file?
376: my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
377: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
378: my @content_of_file = <$temporary_file>;
379: close $temporary_file;
380: my $body_log_file = join(' ',@content_of_file);
381: $logfilename =~ s/\.log$/\.html/;
382: $temporary_file = IO::File->new('>'.$logfilename);
383: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
384: if ($body_log_file=~m/!\s+Emergency stop/) {
385: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
386: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
387: my $badresource;
388: my $badtext;
389: if ($whereitbegins!=-1 and $whereitends!=-1) {
390: $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
391: $whereitbegins = rindex $badtext,'located in';
392: if ($whereitbegins != -1) {
393:
394: $badresource = substr($badtext, $whereitbegins+27,
395: length($badtext) - $whereitbegins - 48);
396: # print "<br />failing resourcename: $badresource<br />";
397: }
398: }
399:
400: if ($advanced_role) {
401: #LaTeX failed to parse tex file
402: print "<h2>LaTeX could not successfully parse your tex file.</h2>";
403: print "It probably has errors in it.<br />";
404: print "With very high probability this error occured in ".$badtext."<br /><br />";
405: print "Here are the error messages in the LaTeX log file<br /><pre>";
406:
407: my $sygnal = 0;
408: for (my $i=0;$i<=$#content_of_file;$i++) {
409: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
410: $sygnal = 1;
411: }
412: if ($content_of_file[$i]=~m/Here is how much of/) {
413: $sygnal = 0;
414: }
415: if ($sygnal) {
416: print "$content_of_file[$i]";
417: }
418: }
419: print "</pre>\n";
420: # print "<br /> Advanced role <br />";
421: print "<b><big>The link to ";
422: $logfilename=~s/\/home\/httpd//;
423: print "<a href=\"$logfilename\">Your log file </a></big></b>";
424: print "\n";
425: #link tooriginal LaTeX file (included according Michael Hamlin desire)
426: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
427: my @tex_content_of_file = <$tex_temporary_file>;
428: close $tex_temporary_file;
429: my $body_tex_file = join(' ',@tex_content_of_file);
430: $texfile =~ s/\.tex$/aaaaa\.html/;
431: $tex_temporary_file = IO::File->new('>'.$texfile);
432: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
433: print "<br /><br />";
434: print "<b><big>The link to ";
435: $texfile=~s/\/home\/httpd//;
436: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
437: print "\n";
438: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
439: print ("$help_text");
440:
441: } else { # Student role...
442: # at this point:
443: # $body_log_file - contains the log file.
444: # $name_file - is the name of the LaTeX file.
445: # $identifier - is the unique LaTeX identifier.l
446:
447: print "<br />There are errors in $badtext";
448: print "<br />These errors prevent this resource from printing correctly";
449: my $tex_handle = IO::File->new($name_file);
450: my @tex_contents = <$tex_handle>;
451: &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
452: print "<br />A message has been sent to the instructor describing this failure<br />";
453: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
454: print ("$help_text");
455:
456: }
457:
458: } elsif ($body_log_file=~m/<inserted text>/) {
459: my $whereitbegins = index $body_log_file,'<inserted text>';
460: print "You are running LaTeX in <b>batch mode</b>.";
461: while ($whereitbegins != -1) {
462: my $tempobegin=$whereitbegins;
463: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
464: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
465: print "<br />It has found an error in".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)." <br /> and corrected it.\n";
466: 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";
467: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
468: }
469: $name_file =~ s/\.tex/\.dvi/;
470: my $new_name_file = $name_file;
471: $new_name_file =~ s/\.dvi/\.ps/;
472: my $papera=$paper;
473: if ($papera eq 'letter') {$papera='';}
474: if ($papera ne '') {$papera='-t'.$papera;}
475: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
476: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
477: "for $status_statement now Converting to PS",
478: \%prog_state,$new_name_file);
479: if (-e $new_name_file) {
480: my $latex_file = $name_file;
481: $latex_file =~ s/\.dvi/\.tex/;
482: &repaginate($new_name_file, $latex_file, $numberofcolumns);
483: #
484: # Now have to re-latex, re dvips again to
485: # get the repaginated postscript.
486: #
487: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
488: "for $status_statement first latex to repaginate",
489: \%prog_state, $name_file);
490: if ($tableofcontents eq 'yes') {
491: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
492: "for $status_statement second latex to repaginate",
493: \%prog_state, $name_file);
494: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
495: "for $status_statement third latex to repaginate",
496: \%prog_state, $name_file);
497: }
498: if ($tableofindex eq 'yes') {
499: my $idxname = $latex_file;
500: $idxname =~ s/\.tex$/\.idx/;
501: &busy_wait_command("makindex $idxname",
502: "Re-creating index file",
503: \%prog_state, $idxname);
504: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
505: "for $status_statement now Recreting index (latex)",
506: \%prog_state, $dvi_file);
507:
508: }
509: &busy_wait_command("$comma $name_file 1>dev/null 2>/dev/null",
510: "for $status_statement dvips to repaginate",
511: \%prog_state, $new_name_file);
512: print "\n<h1>PDF output file (see link below)</h1>\n";
513: $new_name_file =~ m/^(.*)\./;
514: my $ps_file = my $tempo_file = $1.'temporar.ps';
515: my $pdf_file = $1.'.pdf';
516: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
517: my $papera=$paper;
518: if ($papera eq 'letter') {$papera='';}
519: if ($papera ne '') {$papera='-p'.$papera;}
520: $comma = "psnup $papera -2 -s1.0 $new_name_file";
521: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
522: "for $status_statement now Modifying PS layout",
523: \%prog_state,$tempo_file);
524: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
525: my $papera=$paper;
526: if ($papera eq 'letter') {$papera='';}
527: if ($papera ne '') {$papera='-p'.$papera;}
528: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
529: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
530: "for $status_statement now Modifying PS layout",
531: \%prog_state,$tempo_file);
532:
533: } else {
534: $ps_file=$new_name_file;
535: }
536: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
537: "for $status_statement now Converting PS to PDF",
538: \%prog_state, $pdf_file);
539:
540: my $texlog = $texfile;
541: my $texaux = $texfile;
542: my $texdvi = $texfile;
543: my $texps = $texfile;
544: $texlog =~ s/\.tex/\.log/;
545: $texaux =~ s/\.tex/\.aux/;
546: $texdvi =~ s/\.tex/\.dvi/;
547: $texps =~ s/\.tex/\.ps/;
548: my @garb = ($texaux,$texdvi,$texps);
549: # unlink @garb;
550: unlink $duefile;
551: print "<a href=\"/prtspool/$pdf_file\">Your PDF document</a>";
552: }
553: if ($advanced_role) {
554: print "<br /><br />";
555: print "<b><big>The link to ";
556: $logfilename=~s/\/home\/httpd//;
557: print "<a href=\"$logfilename\">Your log file </a></big></b>";
558: print "\n";
559: #link tooriginal LaTeX file (included according Michael Hamlin desire)
560: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
561: my @tex_content_of_file = <$tex_temporary_file>;
562: close $tex_temporary_file;
563: my $body_tex_file = join(' ',@tex_content_of_file);
564: $texfile =~ s/\.tex$/aaaaa\.html/;
565: $tex_temporary_file = IO::File->new('>'.$texfile);
566: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
567: print "<br /><br />";
568: print "<b><big>The link to ";
569: $texfile=~s/\/home\/httpd//;
570: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
571: print "\n";
572: }
573: } else {
574: #LaTeX successfully parsed tex file
575: $name_file =~ s/\.tex/\.dvi/;
576: my $new_name_file = $name_file;
577: $new_name_file =~ s/\.dvi/\.ps/;
578: my $papera=$paper;
579: if ($papera eq 'letter') {$papera='';}
580: if ($papera ne '') {$papera='-t'.$papera;}
581: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
582: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
583: "for $status_statement now Converting to PS",
584: \%prog_state,$new_name_file);
585: if (-e $new_name_file) {
586: my $latex_file = $name_file;
587: $latex_file =~ s/\.dvi/\.tex/;
588: &repaginate($new_name_file, $latex_file, $numberofcolumns);
589: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
590: "for $status_statement first latex to repaginate",
591: \%prog_state, $name_file);
592: if ($tableofcontents eq 'yes') {
593: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
594: "for $status_statement second latex to repaginate",
595: \%prog_state, $name_file);
596: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
597: "for $status_statement third latex to repaginate",
598: \%prog_state, $name_file);
599: }
600: if ($tableofindex eq 'yes') {
601: my $idxname = $latex_file;
602: $idxname =~ s/\.tex$/\.idx/;
603: &busy_wait_command("makeindex $idxname",
604: "Re-creating index file",
605: \%prog_state, $idxname);
606: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
607: "for $status_statement now Recreting index (latex)",
608: \%prog_state, $dvi_file);
609: }
610: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
611: "for $status_statement dvips to repaginate",
612: \%prog_state, $new_name_file);
613: print "<br />";
614: $new_name_file =~ m/^(.*)\./;
615: my $ps_file = my $tempo_file = $1.'temporar.ps';
616: my $pdf_file = $1.'.pdf';
617: $papera=~s/t/p/;
618: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
619: $comma = "psnup $papera -2 -s1.0 $new_name_file";
620: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
621: "for $status_statement now Modifying PS layout",
622: \%prog_state,$tempo_file);
623: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
624: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
625: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
626: "for $status_statement now Modifying PS layout",
627: \%prog_state,$tempo_file);
628: } else {
629: $ps_file=$new_name_file;
630: }
631: my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
632: 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
633: 'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
634: 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
635: 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
636: 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
637: 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
638: 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
639: };
640: if ($paper ne 'letter') {
641: open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n";
642: my $new_ps_file='new'.$ps_file;
643: open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n";
644: print FFHS $addtoPSfile->{$paper}."\n";
645: while (<FFH>) {
646: print FFHS $_;
647: }
648: close(FFH);
649: close(FFHS);
650: $ps_file=$new_ps_file;
651: }
652: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
653: "for $status_statement now Converting PS to PDF",
654: \%prog_state,$pdf_file);
655:
656: my $texlog = $texfile;
657: my $texaux = $texfile;
658: my $texdvi = $texfile;
659: my $texps = $texfile;
660: $texlog =~ s/\.tex/\.log/;
661: $texaux =~ s/\.tex/\.aux/;
662: $texdvi =~ s/\.tex/\.dvi/;
663: $texps =~ s/\.tex/\.ps/;
664: my @garb = ($texlog,$texaux,$texdvi,$texps);
665: # unlink @garb;
666: unlink $duefile;
667: print "<a href=\"/prtspool/$pdf_file\">$link_text - click here to download pdf</a>";
668: print "\n";
669: }
670: }
671: } else {
672: print "LaTeX file $texfile was not created successfully";
673: }
674: }
675: print "<br />";
676: if ($number_of_files>1) {
677: my $zipfile=$texfile[0];
678: $zipfile=~s/\.tex/\.zip/;
679: my $statement="zip $zipfile";
680: foreach my $file (@texfile) {
681: $file=~s/\.tex/.\pdf/;
682: $statement.=' '.$file;
683: }
684: print("<pre>Zip Output:\n");
685: system($statement);
686: print("</pre>");
687: $zipfile=~s/\/home\/httpd//;
688: print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";
689: }
690: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
691: print(&Apache::loncommon::end_page());
692: my $done;
693:
694: sub REAPER {
695: $done=1;
696: }
697:
698: sub busy_wait_command {
699: my ($command,$message,$progress_win,$output_file)=@_;
700:
701: $SIG{CHLD} = \&REAPER;
702: $done=0;
703: my $pid=open(CMD,"$command |");
704: if ($advanced_role) {
705: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
706: }
707: while(!$done) {
708: sleep 1;
709: my $extra_msg;
710: if ($output_file) {
711: my $size=(stat($output_file))[7];
712: $extra_msg=", $size bytes generated";
713: }
714: if ($advanced_role) {
715: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,
716: $message.$extra_msg);
717: }
718: }
719: $SIG{CHLD}='IGNORE';
720: close(CMD);
721: }
722:
723: # Repagninate
724: # What we need to do:
725: # - Count the number of pages in each student.
726: # - Rewrite the latex file replacing the \specials that
727: # mark the end of student with an appropriate number of newlines.
728: # parameters:
729: # psfile - Postscript filename
730: # latexfile - LaTeX filename
731: # columns - number of columns.
732: sub repaginate {
733:
734: # We will try to do this in 2 passes through the postscript since
735: # the postscript is potentially large, to do 2 passes, the first pass
736: # must be able to calculate the total number of document pages so that
737: # at the beginning of the second pass we already know how to replace
738: # %%Pages:
739:
740: # Figure out
741: # 1. Number of pages in the document
742: # 2. Maximum number of pages in a student
743: # 3. Number of pages in each student.
744:
745: my ($postscript_filename, $latex_filename, $num_columns) = @_;
746: open(PSFILE, "<$postscript_filename");
747: my $line;
748: my $total_pages; # Total pages in document.
749: my $seen_pages = 0; # There are several %%Pages only the first is useful
750: my @pages_in_student; # For each student his/her initial page count.
751: my $max_pages = 0; # Pages in 'longest' student.
752: my $page_number = 0;
753: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
754: &mt("Counting pages for student: [_1]",1));
755:
756: while ($line = <PSFILE>) {
757:
758: # Check for total pages (%%Pages:)
759:
760: if (($line =~ /^%%Pages:/) && (!$seen_pages)) {
761: my @pageinfo = split(/ /,$line);
762: $total_pages = $pageinfo[1];
763: $seen_pages = 1;
764: }
765: # Check for %%Page: n m $page_number will be the
766: # biggest of these until we see an endofstudent.
767: # Note that minipages generate spurious %Page: 1 1's so
768: # we only are looking for the largest n (n is page number at the
769: # bottom of the page, m the page number within the document.
770: #
771:
772: if ($line =~ /^%%Page:/) {
773: my @pageinfo = split(/ /, $line);
774: if ($page_number < $pageinfo[1]) {
775: $page_number = $pageinfo[1];
776: } elsif ($pageinfo[2] ne 1) {
777: # current page count reset, and it's not because of a
778: # minipage
779: # - save the page_number, reset and, if necessary
780: # update max_pages.
781: push(@pages_in_student, $page_number);
782: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
783: &mt("Counting pages for student: [_1]", scalar(@pages_in_student)));
784: if ($page_number > $max_pages) {
785: $max_pages = $page_number;
786: }
787: $page_number = $pageinfo[1];
788: }
789: }
790:
791:
792: }
793: # file ended so one more student
794: push(@pages_in_student, $page_number);
795: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
796: &mt("Counting pages for student: [_1]",scalar(@pages_in_student)));
797: if ($page_number > $max_pages) {
798: $max_pages = $page_number;
799: }
800: $page_number = 0;
801:
802: close(PSFILE);
803:
804: # If 2 columns, max_pages must go to an even number of columns:
805:
806:
807: if ($num_columns == 2) {
808: if ($max_pages % 2) {
809: $max_pages++;
810: }
811: }
812:
813: # Now rewrite the LaTex file, substituting our \special
814: # with an appropriate number of \newpage directives.
815:
816: my $outfilename = $latex_filename."temp";
817:
818: open(LATEXIN, "<$latex_filename");
819: open(LATEXOUT, ">$outfilename");
820:
821:
822: my $student_number = 0; # Index of student we're working on.
823: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
824: "Repaginating student ".$student_number+1);
825:
826: while (my $line = <LATEXIN>) {
827: if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {
828: # only end of student stamp if next line is ENDOFSTUDENTSTAMP:
829:
830:
831: # End of student replace with 0 or more newpages.
832:
833: my $addlines = $max_pages - $pages_in_student[$student_number];
834: while($addlines) {
835: print LATEXOUT '\clearpage \strut \clearpage';
836:
837: $addlines--;
838: }
839:
840: $student_number++;
841: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
842: "Repaginating student ".$student_number+1);
843:
844: } else {
845: print LATEXOUT $line;
846: }
847: }
848:
849: close(LATEXIN);
850: close(LATEXOUT);
851: rename($outfilename, $latex_filename);
852:
853: }
854:
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