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 File::Copy;
33: use IO::File;
34: use Image::Magick;
35: use Apache::lonhtmlcommon();
36: use Apache::lonnet;
37: use Apache::loncommon();
38: use Apache::lonlocal;
39: use Apache::lonmsg();
40: use LONCAPA::Enrollment;
41:
42: use strict;
43:
44:
45: # Determine if a user is operating as a student for this course/domain.
46: #Parameters:
47: # none
48: #Implicit:
49: # $env{request.role} contains the role under which this user operated this
50: # this request.
51: sub is_student {
52: return ($env{'request.role'}=~/^st\./);
53: }
54:
55: #
56: # Debugging: Dump the environment for debugging.
57: #
58: sub dumpenv {
59: print "<br />-------------------<br />";
60: foreach my $key (sort (keys %env)) {
61: print "<br />$key -> $env{$key}";
62: }
63: print "<br />-------------------<br />";
64: }
65:
66: #
67: # This sub sends a message to the appropriate person if there was an error
68: # rendering the latex At present, there's only one case to consider:
69: # a student printing inside a course results in messages to the course coordinator.
70: #Parmaeters:
71: # identifier - The unique identifier of this cgi request.
72: # badresource- Filepath to most likely failing
73: # logfile - The contents of the log file (included in the message).
74: # texfile - reference to an array containing the LaTeX input file
75: # (included in the message).
76: #Implicit inputs:
77: # From the environment:
78: # cgi.$identifier.user - User doing the printing.
79: # cgi.$identifier.domain - Domain the user is logged in on with printing.
80: # cgi.$identifier.courseid - Id of the course (if this is a course).
81: # cgi.$identifier.coursedom- Domain in which course was constituted.
82: # cgi.$identifier.resources - List of resource URL's for which the print
83: # was attempted.
84: #
85: sub send_error_mail {
86: my ($identifier, $badresource, $logfile, $texfile) = @_;
87: my $user = $env{"cgi.$identifier.user"};
88: my $domain = $env{"cgi.$identifier.domain"};
89: my $courseid = $env{"cgi.$identifier.courseid"};
90: my $coursedom= $env{"cgi.$identifier.coursedom"};
91: my $resources= $env{"cgi.$identifier.resources"};
92:
93: # resource file->URL
94: #
95: my $badurl = &Apache::lonnet::declutter($badresource);
96:
97: # &dumpenv();
98:
99:
100:
101: # Only continue if there is a user, domain, courseid, course domain
102: # and resources:
103:
104: if(defined($user) && defined($domain) && defined($courseid) &&
105: defined($coursedom) && defined($resources) ){
106:
107: # Only mail if the conditions are ripe for it:
108: # The user is a student in the course:
109: #
110:
111: if (&is_student()) {
112: # build the subject and message body:
113: # print "sending message to course coordinators.<br />";
114:
115: # Todo: Convert badurl into a url from file path:
116:
117: my $subject = "Error [$badurl] Print failed for $user".'@'.$domain;
118: my $message .= "Print failed to render LaTeX for $user".'@'."$domain\n";
119: $message .= " User was attempting to print: \n";
120: foreach my $resource (split(/:/,$resources)) {
121: $message .= " $resource\n";
122: }
123: $message .= "--------------------LaTeX logfile:------------ \n";
124: $message .= $logfile;
125: $message .= "-----------------LaTeX source file: ------------\n";
126:
127: foreach my $line (@$texfile) {
128: $message .= "$line\n";
129: }
130: my (undef, %receivers) = &Apache::lonfeedback::decide_receiver(undef, 0,
131: 1,1,1);
132: # print "<br /> sending...section: $env{'request.course.sec'}";
133: foreach my $dest (keys %receivers) {
134: # print "<br /> dest is $dest";
135: my @destinfo = split(/:/,$dest);
136: my $user = $destinfo[0];
137: my $dom = $destinfo[1];
138:
139: &Apache::lonmsg::user_normal_msg($user, $dom,
140: $subject, $message);
141:
142: # No point in looking at the return status as there's no good
143: # error action I can think of right now (log maybe?).
144: }
145: }
146: }
147: }
148:
149: $|=1;
150: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
151: print <<END;
152: Content-type: text/html
153:
154: <html>
155: <head><title>Bad Cookie</title></head>
156: <body>
157: Your cookie information is incorrect.
158: </body>
159: </html>
160: END
161: return;
162: }
163: &Apache::lonlocal::get_language_handle();
164: &Apache::loncommon::content_type(undef,'text/html');
165:
166: print(&Apache::loncommon::start_page('Creating PDF'));
167:
168: my $identifier = $ENV{'QUERY_STRING'};
169: my $texfile = $env{'cgi.'.$identifier.'.file'};
170: my $laystyle = $env{'cgi.'.$identifier.'.layout'};
171: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
172: my $paper = $env{'cgi.'.$identifier.'.paper'};
173: my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
174: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
175: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
176: my $advanced_role = $env{'cgi.'.$identifier.'.role'};
177: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
178: my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
179: my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'});
180:
181:
182: my @names_pack=();
183: if ($student_names=~/_END_/) {
184: @names_pack=split(/_ENDPERSON_/,$student_names);
185: }
186:
187: print "<a href=\"$backref\"><b>Return</b></a> to last resource.<br /><br />";
188:
189: my $figfile = $texfile;
190: $figfile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.dat/;
191: my $duefile = $texfile;
192: $duefile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.due/;
193: #do we have figures?
194: # print "Figure file: $figfile\n";
195: if (-e $figfile) {
196: # print "$figfile exists\n";
197: my %done_conversion;
198: my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
199: my @content_of_file = <$temporary_file>;
200: close $temporary_file;
201: my $noteps;
202: my %prog_state;
203: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Coverting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80'); }
204: print('<br />');
205: foreach my $not_eps (@content_of_file) {
206: chomp($not_eps);
207: if ($not_eps ne '') {
208: # print "Converting $not_eps"; # Debugging.
209: my $status_statement='EPS picture for '.$not_eps;
210: # print "$status_statement\n";
211: $not_eps=~s|\/\.\/|\/|g;
212: my $eps_f = $not_eps;
213: # $eps_f =~ s/\.[^.]*$/\.eps/i;
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: $eps_f =~ s/ /\_/g; # Spaces are problematic for system commands and LaTeX.
225: #
226: # If the file is already an .eps or .ps file,
227: # We really just need to copy it from where it was to prtspool
228: # but with the spaces substituted to _'s.
229: #
230: my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);
231: if ($sext =~/ps$/i) {
232: # print "$not_eps is a postscript file. copy to $path\n";
233: &File::Path::mkpath($path,0,0777);
234: #print("Made path: $path");
235: #$not_eps =~ s/^\s+//;
236: #$not_eps =~ s/\s+$//;
237: #$not_eps =~ s/ /\__/g;
238: #print("Copying $not_eps to $eps_f\n");
239: copy("$not_eps", "$eps_f");
240: # print "Copy complete\n";
241: } else {
242:
243: $eps_f .= '.eps'; # Just append the eps ext.
244: my $path=$eps_f;
245: $path =~ s/\/([^\/]+)\.eps$//;
246: # print "Final file path: $path "; # Debugging
247: &File::Path::mkpath($path,0,0777);
248: $not_eps =~ s/^\s+//;
249: $not_eps =~ s/\s+$//;
250: $not_eps =~ s/ /\\ /g;
251: if ( exists($done_conversion{$not_eps})) { next; }
252: if ($advanced_role) {
253: my $prettyname=$not_eps;
254: $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;
255: $prettyname=~s|$Apache::lonnet::perlvar{'lonDocRoot'}/|/|;
256: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
257: 'Converting to EPS '.$prettyname);
258: }
259: $done_conversion{$not_eps}=1;
260: # print "Converting $not_eps -> $eps_f"; # Debugging
261: system("convert $not_eps $eps_f");
262: # check is eps exist in prtspool
263: if (not -e $eps_f) {
264: # converting an animated gif creates either:
265: # anim.gif.eps.0
266: # or
267: # anim.gif-0.eps
268: for (my $i=0;$i<10000;$i++) {
269: if (-e $eps_f.'.'.$i) {
270: rename($eps_f.'.'.$i, $eps_f);
271: last;
272: }
273: my $anim_eps = $eps_f;
274: $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
275: if (-e $anim_eps) {
276: rename($anim_eps, $eps_f);
277: last;
278: }
279: }
280: }
281:
282: # imagemagick 6.2.0-6.2.7 fails to properly handle
283: # convert anim.gif anim.gif.eps
284: # it creates anim.eps instead.
285: if (not -e $eps_f) {
286: my $eps_f2 = $eps_f;
287: $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
288: if(-e $eps_f2) {
289: rename($eps_f2,$eps_f);
290: }
291: }
292: }
293:
294: }
295: }
296: if ($advanced_role) {
297: &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
298: }
299: unlink($figfile);
300: }
301: #print "$texfile\n"; #name of the tex file for debugging only
302: my @texfile=($texfile);
303: if ($number_of_files>1) {
304: @texfile=();
305: for (my $i=1;$i<=$number_of_files;$i++) {
306: my $new_texfile=$texfile;
307: $new_texfile=~s/\.tex//;
308: $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
309: push @texfile,$new_texfile;
310: }
311: }
312:
313: my $ind=-1;
314: my %prog_state;
315: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$number_of_files,'inline','80'); }
316: print "<br />";
317: my $num_files = @texfile;
318: foreach $texfile (@texfile) {
319: my $status_statement='';
320: my $link_text='download PDF';
321: $ind++;
322: my @stud_info=split(/_END_/,$names_pack[$ind]);
323: my @tempo_array=split(/:/,$stud_info[0]);
324: my $name;
325: my $name_range='';
326: if ($tempo_array[3]) {
327: $name=$tempo_array[3];
328: ($name_range) = split(/,/,$name, 2);
329: } else {
330: $name=$tempo_array[0].'@'.$tempo_array[1];
331: $name_range = $tempo_array[0];
332: }
333: if (($name ne "") && ($name ne '@') ) { # Could be printing codes...
334: $link_text='<b>'.$name.'</b>';
335: $status_statement.=$name;
336: }
337: if ($#stud_info>0) {
338: @tempo_array=split(/:/,$stud_info[-1]);
339: if ($tempo_array[3]) {
340: $name=$tempo_array[3];
341: my ($lastname) = split(/,/, $name,2);
342: $name_range .= "-".$lastname;
343: } else {
344: $name=$tempo_array[0].'@'.$tempo_array[1];
345: $name_range .= '-'.$tempo_array[0];
346: }
347: if (($name ne "") && ($name ne '@')) {
348: $link_text.=' - <b>'.$name.'</b>';
349: $status_statement.=' - '.$name;
350:
351: }
352: }
353: if(($num_files > 1) && ($link_text eq 'download PDF')) { # Printing codes
354: $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
355: $status_statement .= basename($texfile);
356: }
357: $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
358: print "<br/>";
359: if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); }
360: # This little piece of dirt puts username ranges into the original tex
361: # Tex filename from which they'll propagate into the other filenames as well.
362: #
363: if (-e $texfile) {
364: if (($name_range ne '') && ($num_files > 1)) {
365: my $newtexfile = $texfile;
366: $newtexfile =~ s/\.tex/$name_range\.tex/;
367: rename($texfile, $newtexfile);
368: $texfile = $newtexfile;
369: }
370: $texfile =~ m/^(.*)\/([^\/]+)$/;
371: my $name_file = $2;
372: my $path_file = $1.'/';
373: chdir $path_file;
374: my $dvi_file= $name_file; $dvi_file =~ s/\.tex/$name_range\.dvi/;
375: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
376: "for $status_statement now LaTeXing file",
377: \%prog_state,$dvi_file);
378: if ($tableofcontents eq 'yes') {
379: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
380: "for $status_statement First LaTeX of file for table of contents",
381: \%prog_state,$dvi_file);
382: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
383: "for $status_statement Second LaTeX of file for table of contents",
384: \%prog_state,$dvi_file);
385: } #to create table of contents
386: my $idxname=$name_file;
387: $idxname=~s/\.tex$/\.idx/;
388: if ($tableofindex eq 'yes') {
389: &busy_wait_command("makeindex $idxname",
390: "making index file",
391: \%prog_state,$idxname);
392: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
393: "for $status_statement now LaTeXing file for index section",
394: \%prog_state,$dvi_file);
395: } #to create index
396: #Do we have a latex error in the log file?
397: my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
398: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
399: my @content_of_file = <$temporary_file>;
400: close $temporary_file;
401: my $body_log_file = join(' ',@content_of_file);
402: $logfilename =~ s/\.log$/\.html/;
403: $temporary_file = IO::File->new('>'.$logfilename);
404: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
405: if ($body_log_file=~m/!\s+Emergency stop/) {
406: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
407: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
408: my $badresource;
409: my $badtext;
410: if ($whereitbegins!=-1 and $whereitends!=-1) {
411: $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
412: $whereitbegins = rindex $badtext,'located in';
413: if ($whereitbegins != -1) {
414:
415: $badresource = substr($badtext, $whereitbegins+27,
416: length($badtext) - $whereitbegins - 48);
417: # print "<br />failing resourcename: $badresource<br />";
418: }
419: }
420:
421: if ($advanced_role) {
422: #LaTeX failed to parse tex file
423: print "<h2>LaTeX could not successfully parse your tex file.</h2>";
424: print "It probably has errors in it.<br />";
425: print "With very high probability this error occured in ".$badtext."<br /><br />";
426: print "Here are the error messages in the LaTeX log file<br /><pre>";
427:
428: my $sygnal = 0;
429: for (my $i=0;$i<=$#content_of_file;$i++) {
430: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
431: $sygnal = 1;
432: }
433: if ($content_of_file[$i]=~m/Here is how much of/) {
434: $sygnal = 0;
435: }
436: if ($sygnal) {
437: print "$content_of_file[$i]";
438: }
439: }
440: print "</pre>\n";
441: # print "<br /> Advanced role <br />";
442: print "<b><big>The link to ";
443: $logfilename=~s/\/home\/httpd//;
444: print "<a href=\"$logfilename\">Your log file </a></big></b>";
445: print "\n";
446: #link tooriginal LaTeX file (included according Michael Hamlin desire)
447: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
448: my @tex_content_of_file = <$tex_temporary_file>;
449: close $tex_temporary_file;
450: my $body_tex_file = join(' ',@tex_content_of_file);
451: $texfile =~ s/\.tex$/aaaaa\.html/;
452: $tex_temporary_file = IO::File->new('>'.$texfile);
453: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
454: print "<br /><br />";
455: print "<b><big>The link to ";
456: $texfile=~s/\/home\/httpd//;
457: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
458: print "\n";
459: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
460: print ("$help_text");
461:
462: } else { # Student role...
463: # at this point:
464: # $body_log_file - contains the log file.
465: # $name_file - is the name of the LaTeX file.
466: # $identifier - is the unique LaTeX identifier.l
467:
468: print "<br />There are errors in $badtext";
469: print "<br />These errors prevent this resource from printing correctly";
470: my $tex_handle = IO::File->new($name_file);
471: my @tex_contents = <$tex_handle>;
472: &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
473: print "<br />A message has been sent to the instructor describing this failure<br />";
474: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
475: print ("$help_text");
476:
477: }
478:
479: } elsif ($body_log_file=~m/<inserted text>/) {
480: my $whereitbegins = index $body_log_file,'<inserted text>';
481: print "You are running LaTeX in <b>batch mode</b>.";
482: while ($whereitbegins != -1) {
483: my $tempobegin=$whereitbegins;
484: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
485: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
486: print "<br />It has found an error in".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)." <br /> and corrected it.\n";
487: 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";
488: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
489: }
490: $name_file =~ s/\.tex/\.dvi/;
491: my $new_name_file = $name_file;
492: $new_name_file =~ s/\.dvi/\.ps/;
493: my $papera=$paper;
494: if ($papera eq 'letter') {$papera='';}
495: if ($papera ne '') {$papera='-t'.$papera;}
496: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
497: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
498: "for $status_statement now Converting to PS",
499: \%prog_state,$new_name_file);
500: if (-e $new_name_file) {
501: my $latex_file = $name_file;
502: $latex_file =~ s/\.dvi/\.tex/;
503: &repaginate($new_name_file, $latex_file, $numberofcolumns);
504: #
505: # Now have to re-latex, re dvips again to
506: # get the repaginated postscript.
507: #
508: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
509: "for $status_statement first latex to repaginate",
510: \%prog_state, $name_file);
511: if ($tableofcontents eq 'yes') {
512: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
513: "for $status_statement second latex to repaginate",
514: \%prog_state, $name_file);
515: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
516: "for $status_statement third latex to repaginate",
517: \%prog_state, $name_file);
518: }
519: if ($tableofindex eq 'yes') {
520: my $idxname = $latex_file;
521: $idxname =~ s/\.tex$/\.idx/;
522: &busy_wait_command("makindex $idxname",
523: "Re-creating index file",
524: \%prog_state, $idxname);
525: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
526: "for $status_statement now Recreting index (latex)",
527: \%prog_state, $dvi_file);
528:
529: }
530: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
531: "for $status_statement dvips to repaginate",
532: \%prog_state, $new_name_file);
533: #
534: # One last little hinky kinky thing.
535: # It's just possible that some fonts could not be maded
536: # at the resolution of the pdf print driver.
537: # In that case a file called missfont.log will have been
538: # created that will contain the commands that were attempted
539: # to create the missing fonts. If we basically
540: # take all the 8000 strings in that file, and
541: # replace them with 600 (the ljfour resolution)
542: # run the commands in that file and redvips,
543: # we'll be able to print the missing glyphs at 600dpi.
544: #
545: # Supposedly it is possible to tune TeX/Metafont to do this
546: # right but I failed to get that to work when following the
547: # docs at the tug site, hence this rather kludgey fix.
548: #
549: # We make the (I think) reasonable assumption that
550: # missing glyphs won't change the pagination and I think
551: # this is true because TeX/dvips will leave a space
552: # instead of these glyphs based on the font metrics
553: # (fancy way to say there will be a blank the size of the missing
554: # glyphs).
555: #
556: my $print_directory = dirname($name_file);
557: my $missfonts_file = $print_directory."/missfont.log";
558: #print("<br /> Missing fonts file is: $missfonts_file");
559: if (-e $missfonts_file) {
560: #print("<br />Missing fonts file exists\n");
561: &create_missing_fonts($missfonts_file);
562: unlink($missfonts_file, \%prog_state);
563: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
564: "for $status_statement dvips generated missing fonts",
565: \%prog_state, $new_name_file);
566: }
567:
568: #
569: print "\n<h1>PDF output file (see link below)</h1>\n";
570: $new_name_file =~ m/^(.*)\./;
571: my $ps_file = my $tempo_file = $1.'temporar.ps';
572: my $pdf_file = $1.'.pdf';
573: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
574: my $papera=$paper;
575: if ($papera eq 'letter') {$papera='';}
576: if ($papera ne '') {$papera='-p'.$papera;}
577: $comma = "psnup $papera -2 -s1.0 $new_name_file";
578: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
579: "for $status_statement now Modifying PS layout",
580: \%prog_state,$tempo_file);
581: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
582: my $papera=$paper;
583: if ($papera eq 'letter') {$papera='';}
584: if ($papera ne '') {$papera='-p'.$papera;}
585: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
586: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
587: "for $status_statement now Modifying PS layout",
588: \%prog_state,$tempo_file);
589:
590: } else {
591: $ps_file=$new_name_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: $texps =~ s/\.tex/\.ps/;
605: my @garb = ($texaux,$texdvi,$texps);
606: # unlink @garb;
607: unlink $duefile;
608: print "<a href=\"/prtspool/$pdf_file\">Your PDF document</a>";
609: }
610: if ($advanced_role) {
611: print "<br /><br />";
612: print "<b><big>The link to ";
613: $logfilename=~s/\/home\/httpd//;
614: print "<a href=\"$logfilename\">Your log file </a></big></b>";
615: print "\n";
616: #link tooriginal LaTeX file (included according Michael Hamlin desire)
617: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
618: my @tex_content_of_file = <$tex_temporary_file>;
619: close $tex_temporary_file;
620: my $body_tex_file = join(' ',@tex_content_of_file);
621: $texfile =~ s/\.tex$/aaaaa\.html/;
622: $tex_temporary_file = IO::File->new('>'.$texfile);
623: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
624: print "<br /><br />";
625: print "<b><big>The link to ";
626: $texfile=~s/\/home\/httpd//;
627: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
628: print "\n";
629: }
630: } else {
631: #LaTeX successfully parsed tex file
632: $name_file =~ s/\.tex/\.dvi/;
633: my $new_name_file = $name_file;
634: $new_name_file =~ s/\.dvi/\.ps/;
635: my $papera=$paper;
636: if ($papera eq 'letter') {$papera='';}
637: if ($papera ne '') {$papera='-t'.$papera;}
638: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
639: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
640: "for $status_statement now Converting to PS",
641: \%prog_state,$new_name_file);
642: #
643: # One last little hinky kinky thing.
644: # It's just possible that some fonts could not be maded
645: # at the resolution of the pdf print driver.
646: # In that case a file called missfont.log will have been
647: # created that will contain the commands that were attempted
648: # to create the missing fonts. If we basically
649: # take all the 8000 strings in that file, and
650: # replace them with 600 (the ljfour resolution)
651: # run the commands in that file and redvips,
652: # we'll be able to print the missing glyphs at 600dpi.
653: #
654: # Supposedly it is possible to tune TeX/Metafont to do this
655: # right but I failed to get that to work when following the
656: # docs at the tug site, hence this rather kludgey fix.
657: #
658: # We make the (I think) reasonable assumption that
659: # missing glyphs won't change the pagination and I think
660: # this is true because TeX/dvips will leave a space
661: # instead of these glyphs based on the font metrics
662: # (fancy way to say there will be a blank the size of the missing
663: # glyphs).
664: #
665: my $print_directory = dirname($name_file);
666: my $missfonts_file = $print_directory."/missfont.log";
667: #print("<br /> Missing fonts file is: $missfonts_file");
668: if (-e $missfonts_file) {
669: #print("<br />Missing fonts file exists\n");
670: &create_missing_fonts($missfonts_file);
671: unlink($missfonts_file);
672: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
673: "for $status_statement dvips generated missing fonts",
674: \%prog_state, $new_name_file);
675: }
676: if (-e $new_name_file) {
677: my $latex_file = $name_file;
678: $latex_file =~ s/\.dvi/\.tex/;
679: &repaginate($new_name_file, $latex_file, $numberofcolumns);
680: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
681: "for $status_statement first latex to repaginate",
682: \%prog_state, $name_file);
683: if ($tableofcontents eq 'yes') {
684: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
685: "for $status_statement second latex to repaginate",
686: \%prog_state, $name_file);
687: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
688: "for $status_statement third latex to repaginate",
689: \%prog_state, $name_file);
690: }
691: if ($tableofindex eq 'yes') {
692: my $idxname = $latex_file;
693: $idxname =~ s/\.tex$/\.idx/;
694: &busy_wait_command("makeindex $idxname",
695: "Re-creating index file",
696: \%prog_state, $idxname);
697: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
698: "for $status_statement now Recreting index (latex)",
699: \%prog_state, $dvi_file);
700: }
701: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
702: "for $status_statement dvips to repaginate",
703: \%prog_state, $new_name_file);
704:
705: print "<br />";
706: $new_name_file =~ m/^(.*)\./;
707: my $ps_file = my $tempo_file = $1.'temporar.ps';
708: my $pdf_file = $1.'.pdf';
709: $papera=~s/t/p/;
710: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
711: $comma = "psnup $papera -2 -s1.0 $new_name_file";
712: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
713: "for $status_statement now Modifying PS layout",
714: \%prog_state,$tempo_file);
715: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
716: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
717: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
718: "for $status_statement now Modifying PS layout",
719: \%prog_state,$tempo_file);
720: } else {
721: $ps_file=$new_name_file;
722: }
723: my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
724: 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
725: 'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
726: 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
727: 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
728: 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
729: 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
730: 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
731: };
732: if ($paper ne 'letter') {
733: open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n";
734: my $new_ps_file='new'.$ps_file;
735: open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n";
736: print FFHS $addtoPSfile->{$paper}."\n";
737: while (<FFH>) {
738: print FFHS $_;
739: }
740: close(FFH);
741: close(FFHS);
742: $ps_file=$new_ps_file;
743: }
744: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
745: "for $status_statement now Converting PS to PDF",
746: \%prog_state,$pdf_file);
747:
748: my $texlog = $texfile;
749: my $texaux = $texfile;
750: my $texdvi = $texfile;
751: my $texps = $texfile;
752: $texlog =~ s/\.tex/\.log/;
753: $texaux =~ s/\.tex/\.aux/;
754: $texdvi =~ s/\.tex/\.dvi/;
755: $texps =~ s/\.tex/\.ps/;
756: my @garb = ($texlog,$texaux,$texdvi,$texps);
757: # unlink @garb;
758: unlink $duefile;
759: print "<a href=\"/prtspool/$pdf_file\">$link_text - click here to download pdf</a>";
760: print "\n";
761: }
762: }
763: } else {
764: print "LaTeX file $texfile was not created successfully";
765: }
766: }
767: print "<br />";
768: if ($number_of_files>1) {
769: my $zipfile=$texfile[0];
770: $zipfile=~s/\.tex/\.zip/;
771: my $statement="zip $zipfile";
772: foreach my $file (@texfile) {
773: $file=~s/\.tex/.\pdf/;
774: $statement.=' '.$file;
775: }
776: print("<pre>Zip Output:\n");
777: system($statement);
778: print("</pre>");
779: $zipfile=~s/\/home\/httpd//;
780: print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";
781: }
782: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
783: print(&Apache::loncommon::end_page());
784: my $done;
785:
786: sub REAPER {
787: $done=1;
788: }
789:
790: sub busy_wait_command {
791: my ($command,$message,$progress_win,$output_file)=@_;
792:
793: $SIG{CHLD} = \&REAPER;
794: $done=0;
795: my $pid=open(CMD,"$command |");
796: if ($advanced_role) {
797: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
798: }
799: while(!$done) {
800: sleep 1;
801: my $extra_msg;
802: if ($output_file) {
803: my $size=(stat($output_file))[7];
804: $extra_msg=", $size bytes generated";
805: }
806: if ($advanced_role) {
807: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,
808: $message.$extra_msg);
809: }
810: }
811: $SIG{CHLD}='IGNORE';
812: close(CMD);
813: }
814:
815: # Repagninate
816: # What we need to do:
817: # - Count the number of pages in each student.
818: # - Rewrite the latex file replacing the \specials that
819: # mark the end of student with an appropriate number of newlines.
820: # parameters:
821: # psfile - Postscript filename
822: # latexfile - LaTeX filename
823: # columns - number of columns.
824: sub repaginate {
825:
826: # We will try to do this in 2 passes through the postscript since
827: # the postscript is potentially large, to do 2 passes, the first pass
828: # must be able to calculate the total number of document pages so that
829: # at the beginning of the second pass we already know how to replace
830: # %%Pages:
831:
832: # Figure out
833: # 1. Number of pages in the document
834: # 2. Maximum number of pages in a student
835: # 3. Number of pages in each student.
836:
837: my ($postscript_filename, $latex_filename, $num_columns) = @_;
838: open(PSFILE, "<$postscript_filename");
839: my $line;
840: my $total_pages; # Total pages in document.
841: my $seen_pages = 0; # There are several %%Pages only the first is useful
842: my @pages_in_student; # For each student his/her initial page count.
843: my $max_pages = 0; # Pages in 'longest' student.
844: my $page_number = 0;
845: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
846: &mt("Counting pages for student: [_1]",1));
847:
848: while ($line = <PSFILE>) {
849:
850: # Check for total pages (%%Pages:)
851:
852: if (($line =~ /^%%Pages:/) && (!$seen_pages)) {
853: my @pageinfo = split(/ /,$line);
854: $total_pages = $pageinfo[1];
855: $seen_pages = 1;
856: }
857: # Check for %%Page: n m $page_number will be the
858: # biggest of these until we see an endofstudent.
859: # Note that minipages generate spurious %Page: 1 1's so
860: # we only are looking for the largest n (n is page number at the
861: # bottom of the page, m the page number within the document.
862: #
863:
864: if ($line =~ /^%%Page:/) {
865: my @pageinfo = split(/ /, $line);
866: if ($page_number < $pageinfo[1]) {
867: $page_number = $pageinfo[1];
868: } elsif ($pageinfo[2] ne 1) {
869: # current page count reset, and it's not because of a
870: # minipage
871: # - save the page_number, reset and, if necessary
872: # update max_pages.
873: push(@pages_in_student, $page_number);
874: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
875: &mt("Counting pages for student: [_1]", scalar(@pages_in_student)));
876: if ($page_number > $max_pages) {
877: $max_pages = $page_number;
878: }
879: $page_number = $pageinfo[1];
880: }
881: }
882:
883:
884: }
885: # file ended so one more student
886: push(@pages_in_student, $page_number);
887: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
888: &mt("Counting pages for student: [_1]",scalar(@pages_in_student)));
889: if ($page_number > $max_pages) {
890: $max_pages = $page_number;
891: }
892: $page_number = 0;
893:
894: close(PSFILE);
895:
896: # If 2 columns, max_pages must go to an even number of columns:
897:
898:
899: if ($num_columns == 2) {
900: if ($max_pages % 2) {
901: $max_pages++;
902: }
903: }
904:
905: # Now rewrite the LaTex file, substituting our \special
906: # with an appropriate number of \newpage directives.
907:
908: my $outfilename = $latex_filename."temp";
909:
910: open(LATEXIN, "<$latex_filename");
911: open(LATEXOUT, ">$outfilename");
912:
913:
914: my $student_number = 0; # Index of student we're working on.
915: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
916: "Repaginating student ".$student_number+1);
917:
918: while (my $line = <LATEXIN>) {
919: if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {
920: # only end of student stamp if next line is ENDOFSTUDENTSTAMP:
921:
922:
923: # End of student replace with 0 or more newpages.
924:
925: my $addlines = $max_pages - $pages_in_student[$student_number];
926: while($addlines) {
927: print LATEXOUT '\clearpage \strut \clearpage';
928:
929: $addlines--;
930: }
931:
932: $student_number++;
933: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
934: "Repaginating student ".$student_number+1);
935:
936: } else {
937: print LATEXOUT $line;
938: }
939: }
940:
941: close(LATEXIN);
942: close(LATEXOUT);
943: rename($outfilename, $latex_filename);
944:
945: }
946:
947: #
948: # Create missing fonts given a latex missfonts.log file.
949: # This file will have lines like:
950: #
951: # mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 tcrm0500
952: #
953: # We want to execute those lines with the 8000's changed to 600's
954: # in order to match the resolution of the ljfour printer.
955: # Of course if some wiseguy has changed the default printer from ljfour
956: # in the dvips's config.ps file that will break so we'll also
957: # ensure that --mfmode is ljfour.
958: #
959: sub create_missing_fonts {
960: my ($fontfile, $state) = @_;
961:
962: # Open and read in the font file..we'll read it into the array
963: # font_commands.
964: #
965: open(my $font_handle, $fontfile);
966: my @font_commands = <$font_handle>;
967:
968: # make the list contain each command only once
969: my %uniq;
970: @font_commands = map { $uniq{$_}++ == 0 ? $_ : () } @font_commands;
971:
972: # Now process each command replacing the appropriate 8000's with
973: # 600's ensuring that font names with 8000's in them are not corrupted.
974: # and if the --mfmode is not ljfour we turn it into ljfour.
975: # Then we execute the command.
976: #
977:
978: foreach my $command (@font_commands) {
979: #print("<br />Raw command: $command");
980: $command =~ s/ 8000/ 600/g; # dpi directives.
981: $command =~ s/\/8000/\/600/g; # mag directives.
982: #print("<br />After dpi replacements: $command");
983:
984: my @cmdarray = split(/ /,$command);
985: for (my $i =0; $i < scalar(@cmdarray); $i++) {
986: if ($cmdarray[$i] eq '--mfmode') {
987: $cmdarray[$i+1] = "ljfour";
988: }
989: }
990: #print("<br /> before reassembly : (@cmdarray)");
991: $command = join(" ", (@cmdarray));
992:
993: #print("<br />Creating fonts via command: $command");
994: &busy_wait_command("$command 1>/dev/null 2>/dev/null",
995: "Creating missing font",
996: $state, $command);
997:
998: }
999:
1000: }
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