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: print(&Apache::loncommon::start_page('Creating PDF'));
165:
166: my $identifier = $ENV{'QUERY_STRING'};
167: my $texfile = $env{'cgi.'.$identifier.'.file'};
168: my $laystyle = $env{'cgi.'.$identifier.'.layout'};
169: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
170: my $paper = $env{'cgi.'.$identifier.'.paper'};
171: my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
172: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
173: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
174: my $advanced_role = $env{'cgi.'.$identifier.'.role'};
175: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
176: my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
177: my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'});
178:
179:
180: my @names_pack=();
181: if ($student_names=~/_END_/) {
182: @names_pack=split(/_ENDPERSON_/,$student_names);
183: }
184:
185: print "<a href=\"$backref\"><b>Return</b></a> to last resource.<br /><br />";
186:
187: my $figfile = $texfile;
188: $figfile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.dat/;
189: my $duefile = $texfile;
190: $duefile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.due/;
191: #do we have figures?
192: # print "Figure file: $figfile\n";
193: if (-e $figfile) {
194: # print "$figfile exists\n";
195: my %done_conversion;
196: my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
197: my @content_of_file = <$temporary_file>;
198: close $temporary_file;
199: my $noteps;
200: my %prog_state;
201: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Coverting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80'); }
202: print('<br />');
203: foreach my $not_eps (@content_of_file) {
204: chomp($not_eps);
205: if ($not_eps ne '') {
206: # print "Converting $not_eps"; # Debugging.
207: my $status_statement='EPS picture for '.$not_eps;
208: # print "$status_statement\n";
209: $not_eps=~s|\/\.\/|\/|g;
210: my $eps_f = $not_eps;
211: # $eps_f =~ s/\.[^.]*$/\.eps/i;
212: $eps_f .= '.eps'; # Just append the eps ext.
213: if ($eps_f=~/\/home\/([^\/]+)\/public_html\//) {
214: $eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;
215: $eps_f = '/home/httpd/prtspool/'.$eps_f;
216: } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\//) {
217: $eps_f=~m/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\/(.+)/;
218: $eps_f = '/home/httpd/prtspool/'.$1;
219: } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\//) {
220: $eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/;
221: $eps_f = '/home/httpd/prtspool/'.$1.'/'.$2;
222: }
223: $eps_f =~ s/ /\_/g; # Spaces are problematic for system commands and LaTeX.
224: my $path=$eps_f;
225: $path =~ s/\/([^\/]+)\.eps$//;
226: # print "Final file path: $path "; # Debugging
227: File::Path::mkpath($path,0,0777);
228: $not_eps =~ s/^\s+//;
229: $not_eps =~ s/\s+$//;
230: $not_eps =~ s/ /\\ /g;
231: if ( exists($done_conversion{$not_eps})) { next; }
232: if ($advanced_role) {
233: my $prettyname=$not_eps;
234: $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;
235: $prettyname=~s|$Apache::lonnet::perlvar{'lonDocRoot'}/|/|;
236: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Converting to EPS '.$prettyname);
237: }
238: $done_conversion{$not_eps}=1;
239: # print "Converting $not_eps -> $eps_f"; # Debugging
240: system("convert $not_eps $eps_f");
241: # check is eps exist in prtspool
242: if (not -e $eps_f) {
243: # converting an animated gif creates either:
244: # anim.gif.eps.0
245: # or
246: # anim.gif-0.eps
247: for (my $i=0;$i<10000;$i++) {
248: if (-e $eps_f.'.'.$i) {
249: rename($eps_f.'.'.$i, $eps_f);
250: last;
251: }
252: my $anim_eps = $eps_f;
253: $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
254: if (-e $anim_eps) {
255: rename($anim_eps, $eps_f);
256: last;
257: }
258: }
259: }
260: # imagemagick 6.2.0-6.2.7 fails to properly handle
261: # convert anim.gif anim.gif.eps
262: # it creates anim.eps instead.
263: if (not -e $eps_f) {
264: my $eps_f2 = $eps_f;
265: $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
266: if(-e $eps_f2) {
267: rename($eps_f2,$eps_f);
268: }
269: }
270:
271: }
272: }
273: if ($advanced_role) {
274: &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
275: }
276: unlink($figfile);
277: }
278: #print "$texfile\n"; #name of the tex file for debugging only
279: my @texfile=($texfile);
280: if ($number_of_files>1) {
281: @texfile=();
282: for (my $i=1;$i<=$number_of_files;$i++) {
283: my $new_texfile=$texfile;
284: $new_texfile=~s/\.tex//;
285: $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
286: push @texfile,$new_texfile;
287: }
288: }
289:
290: my $ind=-1;
291: my %prog_state;
292: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$number_of_files,'inline','80'); }
293: print "<br />";
294: my $num_files = @texfile;
295: foreach $texfile (@texfile) {
296: my $status_statement='';
297: my $link_text='download PDF';
298: $ind++;
299: my @stud_info=split(/_END_/,$names_pack[$ind]);
300: my @tempo_array=split(/:/,$stud_info[0]);
301: my $name;
302: my $name_range='';
303: if ($tempo_array[3]) {
304: $name=$tempo_array[3];
305: ($name_range) = split(/,/,$name, 2);
306: } else {
307: $name=$tempo_array[0].'@'.$tempo_array[1];
308: $name_range = $tempo_array[0];
309: }
310: if (($name ne "") && ($name ne '@') ) { # Could be printing codes...
311: $link_text='<b>'.$name.'</b>';
312: $status_statement.=$name;
313: }
314: if ($#stud_info>0) {
315: @tempo_array=split(/:/,$stud_info[-1]);
316: if ($tempo_array[3]) {
317: $name=$tempo_array[3];
318: my ($lastname) = split(/,/, $name,2);
319: $name_range .= "-".$lastname;
320: } else {
321: $name=$tempo_array[0].'@'.$tempo_array[1];
322: $name_range .= '-'.$tempo_array[0];
323: }
324: if (($name ne "") && ($name ne '@')) {
325: $link_text.=' - <b>'.$name.'</b>';
326: $status_statement.=' - '.$name;
327:
328: }
329: }
330: if(($num_files > 1) && ($link_text eq 'download PDF')) { # Printing codes
331: $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
332: $status_statement .= basename($texfile);
333: }
334: $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
335: print "<br/>";
336: if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); }
337: # This little piece of dirt puts username ranges into the original tex
338: # Tex filename from which they'll propagate into the other filenames as well.
339: #
340: if (-e $texfile) {
341: if (($name_range ne '') && ($num_files > 1)) {
342: my $newtexfile = $texfile;
343: $newtexfile =~ s/\.tex/$name_range\.tex/;
344: rename($texfile, $newtexfile);
345: $texfile = $newtexfile;
346: }
347: $texfile =~ m/^(.*)\/([^\/]+)$/;
348: my $name_file = $2;
349: my $path_file = $1.'/';
350: chdir $path_file;
351: my $dvi_file= $name_file; $dvi_file =~ s/\.tex/$name_range\.dvi/;
352: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
353: "for $status_statement now LaTeXing file",
354: \%prog_state,$dvi_file);
355: if ($tableofcontents eq 'yes') {
356: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
357: "for $status_statement First LaTeX of file for table of contents",
358: \%prog_state,$dvi_file);
359: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
360: "for $status_statement Second LaTeX of file for table of contents",
361: \%prog_state,$dvi_file);
362: } #to create table of contents
363: my $idxname=$name_file;
364: $idxname=~s/\.tex$/\.idx/;
365: if ($tableofindex eq 'yes') {
366: &busy_wait_command("makeindex $idxname",
367: "making index file",
368: \%prog_state,$idxname);
369: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
370: "for $status_statement now LaTeXing file for index section",
371: \%prog_state,$dvi_file);
372: } #to create index
373: #Do we have a latex error in the log file?
374: my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
375: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
376: my @content_of_file = <$temporary_file>;
377: close $temporary_file;
378: my $body_log_file = join(' ',@content_of_file);
379: $logfilename =~ s/\.log$/\.html/;
380: $temporary_file = IO::File->new('>'.$logfilename);
381: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
382: if ($body_log_file=~m/!\s+Emergency stop/) {
383: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
384: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
385: my $badresource;
386: my $badtext;
387: if ($whereitbegins!=-1 and $whereitends!=-1) {
388: $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
389: $whereitbegins = rindex $badtext,'located in';
390: if ($whereitbegins != -1) {
391:
392: $badresource = substr($badtext, $whereitbegins+27,
393: length($badtext) - $whereitbegins - 48);
394: # print "<br />failing resourcename: $badresource<br />";
395: }
396: }
397:
398: if ($advanced_role) {
399: #LaTeX failed to parse tex file
400: print "<h2>LaTeX could not successfully parse your tex file.</h2>";
401: print "It probably has errors in it.<br />";
402: print "With very high probability this error occured in ".$badtext."<br /><br />";
403: print "Here are the error messages in the LaTeX log file<br /><pre>";
404:
405: my $sygnal = 0;
406: for (my $i=0;$i<=$#content_of_file;$i++) {
407: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
408: $sygnal = 1;
409: }
410: if ($content_of_file[$i]=~m/Here is how much of/) {
411: $sygnal = 0;
412: }
413: if ($sygnal) {
414: print "$content_of_file[$i]";
415: }
416: }
417: print "</pre>\n";
418: # print "<br /> Advanced role <br />";
419: print "<b><big>The link to ";
420: $logfilename=~s/\/home\/httpd//;
421: print "<a href=\"$logfilename\">Your log file </a></big></b>";
422: print "\n";
423: #link tooriginal LaTeX file (included according Michael Hamlin desire)
424: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
425: my @tex_content_of_file = <$tex_temporary_file>;
426: close $tex_temporary_file;
427: my $body_tex_file = join(' ',@tex_content_of_file);
428: $texfile =~ s/\.tex$/aaaaa\.html/;
429: $tex_temporary_file = IO::File->new('>'.$texfile);
430: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
431: print "<br /><br />";
432: print "<b><big>The link to ";
433: $texfile=~s/\/home\/httpd//;
434: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
435: print "\n";
436: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
437: print ("$help_text");
438:
439: } else { # Student role...
440: # at this point:
441: # $body_log_file - contains the log file.
442: # $name_file - is the name of the LaTeX file.
443: # $identifier - is the unique LaTeX identifier.l
444:
445: print "<br />There are errors in $badtext";
446: print "<br />These errors prevent this resource from printing correctly";
447: my $tex_handle = IO::File->new($name_file);
448: my @tex_contents = <$tex_handle>;
449: &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
450: print "<br />A message has been sent to the instructor describing this failure<br />";
451: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
452: print ("$help_text");
453:
454: }
455:
456: } elsif ($body_log_file=~m/<inserted text>/) {
457: my $whereitbegins = index $body_log_file,'<inserted text>';
458: print "You are running LaTeX in <b>batch mode</b>.";
459: while ($whereitbegins != -1) {
460: my $tempobegin=$whereitbegins;
461: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
462: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
463: print "<br />It has found an error in".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)." <br /> and corrected it.\n";
464: 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";
465: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
466: }
467: $name_file =~ s/\.tex/\.dvi/;
468: my $new_name_file = $name_file;
469: $new_name_file =~ s/\.dvi/\.ps/;
470: my $papera=$paper;
471: if ($papera eq 'letter') {$papera='';}
472: if ($papera ne '') {$papera='-t'.$papera;}
473: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
474: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
475: "for $status_statement now Converting to PS",
476: \%prog_state,$new_name_file);
477: if (-e $new_name_file) {
478: &repaginate_postscript($new_name_file);
479: print "<h1>PDF output file (see link below)</h1>\n";
480: $new_name_file =~ m/^(.*)\./;
481: my $ps_file = my $tempo_file = $1.'temporar.ps';
482: my $pdf_file = $1.'.pdf';
483: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
484: my $papera=$paper;
485: if ($papera eq 'letter') {$papera='';}
486: if ($papera ne '') {$papera='-p'.$papera;}
487: $comma = "psnup $papera -2 -s1.0 $new_name_file";
488: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
489: "for $status_statement now Modifying PS layout",
490: \%prog_state,$tempo_file);
491: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
492: my $papera=$paper;
493: if ($papera eq 'letter') {$papera='';}
494: if ($papera ne '') {$papera='-p'.$papera;}
495: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
496: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
497: "for $status_statement now Modifying PS layout",
498: \%prog_state,$tempo_file);
499:
500: } else {
501: $ps_file=$new_name_file;
502: }
503: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
504: "for $status_statement now Converting PS to PDF",
505: \%prog_state, $pdf_file);
506:
507: my $texlog = $texfile;
508: my $texaux = $texfile;
509: my $texdvi = $texfile;
510: my $texps = $texfile;
511: $texlog =~ s/\.tex/\.log/;
512: $texaux =~ s/\.tex/\.aux/;
513: $texdvi =~ s/\.tex/\.dvi/;
514: $texps =~ s/\.tex/\.ps/;
515: my @garb = ($texaux,$texdvi,$texps);
516: # unlink @garb;
517: unlink $duefile;
518: print "<a href=\"/prtspool/$pdf_file\">Your PDF document</a>";
519: }
520: if ($advanced_role) {
521: print "<br /><br />";
522: print "<b><big>The link to ";
523: $logfilename=~s/\/home\/httpd//;
524: print "<a href=\"$logfilename\">Your log file </a></big></b>";
525: print "\n";
526: #link tooriginal LaTeX file (included according Michael Hamlin desire)
527: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
528: my @tex_content_of_file = <$tex_temporary_file>;
529: close $tex_temporary_file;
530: my $body_tex_file = join(' ',@tex_content_of_file);
531: $texfile =~ s/\.tex$/aaaaa\.html/;
532: $tex_temporary_file = IO::File->new('>'.$texfile);
533: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
534: print "<br /><br />";
535: print "<b><big>The link to ";
536: $texfile=~s/\/home\/httpd//;
537: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
538: print "\n";
539: }
540: } else {
541: #LaTeX successfully parsed tex file
542: $name_file =~ s/\.tex/\.dvi/;
543: my $new_name_file = $name_file;
544: $new_name_file =~ s/\.dvi/\.ps/;
545: my $papera=$paper;
546: if ($papera eq 'letter') {$papera='';}
547: if ($papera ne '') {$papera='-t'.$papera;}
548: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
549: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
550: "for $status_statement now Converting to PS",
551: \%prog_state,$new_name_file);
552: if (-e $new_name_file) {
553: &repaginate_postscript($new_name_file);
554: print "<br />";
555: $new_name_file =~ m/^(.*)\./;
556: my $ps_file = my $tempo_file = $1.'temporar.ps';
557: my $pdf_file = $1.'.pdf';
558: $papera=~s/t/p/;
559: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
560: $comma = "psnup $papera -2 -s1.0 $new_name_file";
561: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
562: "for $status_statement now Modifying PS layout",
563: \%prog_state,$tempo_file);
564: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
565: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
566: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
567: "for $status_statement now Modifying PS layout",
568: \%prog_state,$tempo_file);
569: } else {
570: $ps_file=$new_name_file;
571: }
572: my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
573: 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
574: 'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
575: 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
576: 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
577: 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
578: 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
579: 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
580: };
581: if ($paper ne 'letter') {
582: open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n";
583: my $new_ps_file='new'.$ps_file;
584: open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n";
585: print FFHS $addtoPSfile->{$paper}."\n";
586: while (<FFH>) {
587: print FFHS $_;
588: }
589: close(FFH);
590: close(FFHS);
591: $ps_file=$new_ps_file;
592: }
593: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
594: "for $status_statement now Converting PS to PDF",
595: \%prog_state,$pdf_file);
596:
597: my $texlog = $texfile;
598: my $texaux = $texfile;
599: my $texdvi = $texfile;
600: my $texps = $texfile;
601: $texlog =~ s/\.tex/\.log/;
602: $texaux =~ s/\.tex/\.aux/;
603: $texdvi =~ s/\.tex/\.dvi/;
604: $texps =~ s/\.tex/\.ps/;
605: my @garb = ($texlog,$texaux,$texdvi,$texps);
606: # unlink @garb;
607: unlink $duefile;
608: print "<a href=\"/prtspool/$pdf_file\">$link_text - click here to download pdf</a>";
609: print "\n";
610: }
611: }
612: } else {
613: print "LaTeX file $texfile was not created successfully";
614: }
615: }
616: print "<br />";
617: if ($number_of_files>1) {
618: my $zipfile=$texfile[0];
619: $zipfile=~s/\.tex/\.zip/;
620: my $statement="zip $zipfile";
621: foreach my $file (@texfile) {
622: $file=~s/\.tex/.\pdf/;
623: $statement.=' '.$file;
624: }
625: print("<pre>Zip Output:\n");
626: system($statement);
627: print("</pre>");
628: $zipfile=~s/\/home\/httpd//;
629: print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";
630: }
631: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
632: print(&Apache::loncommon::end_page());
633: my $done;
634: sub REAPER {
635: $done=1;
636: }
637:
638: sub busy_wait_command {
639: my ($command,$message,$progress_win,$output_file)=@_;
640:
641: $SIG{CHLD} = \&REAPER;
642: $done=0;
643: my $pid=open(CMD,"$command |");
644: if ($advanced_role) {
645: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
646: }
647: while(!$done) {
648: sleep 1;
649: my $extra_msg;
650: if ($output_file) {
651: my $size=(stat($output_file))[7];
652: $extra_msg=", $size bytes generated";
653: }
654: if ($advanced_role) {
655: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,
656: $message.$extra_msg);
657: }
658: }
659: $SIG{CHLD}='IGNORE';
660: close(CMD);
661: }
662:
663:
664: # Repagninate a postscript file.
665: # What we need to do:
666: # - Count the number of pages in each student.
667: # - Add pages between each student so that each student's output is
668: # the maximum number of pages.
669: #
670: sub repaginate_postscript {
671:
672: # We will try to do this in 2 passes through the postscript since
673: # the postscript is potentially large, to do 2 passes, the first pass
674: # must be able to calculate the total number of document pages so that
675: # at the beginning of the second pass we already know how to replace
676: # %%Pages:
677:
678: # Figure out
679: # 1. Number of pages in the document
680: # 2. Maximum number of pages in a student
681: # 3. Number of pages in each student.
682:
683: my ($postscript_filename) = @_;
684: open(PSFILE, "<$postscript_filename");
685: my $line;
686: my $total_pages; # Total pages in document.
687: my $seen_pages = 0; # There are several %%Pages only the first is useful
688: my $student_number = 0; # Index of student we're working on.
689: my @pages_in_student; # For each student his/her initial page count.
690: my $max_pages = 0; # Pages in 'longest' student.
691: while ($line = <PSFILE>) {
692: my $page_number = 0;
693:
694: # Check for total pages (%%Pages:)
695:
696: if (($line =~ "^%%Pages:") && (!$seen_pages)) {
697: my @pageinfo = split(/ /,$line);
698: $total_pages = $pageinfo[1];
699: $seen_pages = 1;
700: }
701: # Check for %%Page: n m $page_number will be the
702: # biggest of these until we see an endofstudent.
703: # Note that minipages generate spurious %Page: 1 1's so
704: # we only are looking for the largest n (n is page number at the
705: # bottom of the page, m the page number within the document.
706: #
707: if ($line =~ "^%%Page:") {
708: my @pageinfo = split(/ /, $line);
709: if ($page_number < $pageinfo[1]) {
710: $page_number = $pageinfo[1];
711: }
712: }
713: # ENDOFSTUDENTSTAMP - save the page_number, reset and, if necessary
714: # udpate max_pages.
715: #
716: if ($line =~ "ENDOFSTUDENTSTAMP") {
717: $pages_in_student[$student_number] = $page_number;
718: $student_number++;
719:
720: if ($page_number > $max_pages) {
721: $max_pages = $page_number;
722: }
723: $page_number = 0;
724:
725: }
726:
727:
728: }
729: close(PSFILE);
730:
731: # Figure out how many total pages we need to add and adjust the
732: # $total_pages accordingly:
733: #
734: my $add_pages = 0;
735: for (my $i =0; $i < $student_number; $i++) {
736: $add_pages += ($max_pages - $pages_in_student[$i]);
737: }
738: # If we don't need to add any pages, we're done!
739: # You might think that we don't need to do anything if
740: # there are no pages to add, however we still need to at least strip out
741: # the ENDOFSTUDENTSTAMP stamps...as they are not postscript comments!!
742:
743:
744: # Now pass 2; we're going to write the new. ps file:
745: # - Modify its first %%Pages: line so that it has the new correct number of
746: # pages
747: # - For each student, insert as many blank pages as needed (and
748: # associated structured comments) to expand a student out to
749: # max_pages pages.
750: # - Remove the ENDOFSTUDENTSTAMP lines.
751: #
752:
753: $total_pages += $add_pages;
754: $student_number = 0;
755:
756: open(PSFILE, "<$postscript_filename");
757: open(PSOFILE,">$postscript_filename"."repaginating"); # unique if original fname is.
758: $seen_pages = 0; # Reset seen %%Pages flag...
759: while ($line = <PSFILE>) {
760: if (($line =~ "^%%Pages:") && (!$seen_pages)) {
761: $line = "%%Pages: $total_pages\n";
762: $seen_pages = 1;
763: }
764: if ($line =~ "ENDOFSTUDENTSTAMP") {
765: $add_pages = ($max_pages - $pages_in_student[$student_number]);
766: $line = "\n";
767: my $last_student_page = $pages_in_student[$student_number];
768: my $last_total_page = $student_number*$max_pages + $last_student_page;
769: while ($add_pages) {
770: $line .= "%Page: $last_student_page $last_total_page\n";
771: my $bop = $last_total_page-1;
772: $line .= "TeXDict begin $last_student_page $bop bop eop end\n";
773: $last_student_page++;
774: $last_total_page++;
775: $add_pages--;
776: }
777: $student_number++;
778: }
779: print PSOFILE $line;
780: }
781: close PSOFILE;
782: close PSFILE;
783:
784: rename($postscript_filename."repaginating", $postscript_filename);
785:
786: }
787:
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