1: #!/usr/bin/perl
2: # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
3: #
4: # $Id: printout.pl,v 1.127 2007/09/21 21:11:20 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: use lib '/home/httpd/lib/perl';
30: use LONCAPA::loncgi;
31: use File::Path;
32: use File::Basename;
33: use File::Copy;
34: use IO::File;
35: use Image::Magick;
36: use Apache::lonhtmlcommon();
37: use Apache::lonnet;
38: use Apache::loncommon();
39: use Apache::lonlocal;
40: use Apache::lonmsg();
41: use LONCAPA::Enrollment;
42: use LONCAPA::Configuration;
43:
44: use strict;
45:
46:
47: # Determine if a user is operating as a student for this course/domain.
48: #Parameters:
49: # none
50: #Implicit:
51: # $env{request.role} contains the role under which this user operated this
52: # this request.
53: sub is_student {
54: return ($env{'request.role'}=~/^st\./);
55: }
56:
57: #
58: # Debugging: Dump the environment for debugging.
59: #
60: sub dumpenv {
61: print "<br />-------------------<br />";
62: foreach my $key (sort (keys %env)) {
63: print "<br />$key -> $env{$key}";
64: }
65: print "<br />-------------------<br />";
66: }
67:
68: #
69: # This sub sends a message to the appropriate person if there was an error
70: # rendering the latex At present, there's only one case to consider:
71: # a student printing inside a course results in messages to the course coordinator.
72: #Parmaeters:
73: # identifier - The unique identifier of this cgi request.
74: # badresource- Filepath to most likely failing
75: # logfile - The contents of the log file (included in the message).
76: # texfile - reference to an array containing the LaTeX input file
77: # (included in the message).
78: #Implicit inputs:
79: # From the environment:
80: # cgi.$identifier.user - User doing the printing.
81: # cgi.$identifier.domain - Domain the user is logged in on with printing.
82: # cgi.$identifier.courseid - Id of the course (if this is a course).
83: # cgi.$identifier.coursedom- Domain in which course was constituted.
84: # cgi.$identifier.resources - List of resource URL's for which the print
85: # was attempted.
86: #
87: sub send_error_mail {
88: my ($identifier, $badresource, $logfile, $texfile) = @_;
89: my $user = $env{"cgi.$identifier.user"};
90: my $domain = $env{"cgi.$identifier.domain"};
91: my $courseid = $env{"cgi.$identifier.courseid"};
92: my $coursedom= $env{"cgi.$identifier.coursedom"};
93: my $resources= $env{"cgi.$identifier.resources"};
94:
95: # resource file->URL
96: #
97: my $badurl = &Apache::lonnet::declutter($badresource);
98:
99: # &dumpenv();
100:
101:
102:
103: # Only continue if there is a user, domain, courseid, course domain
104: # and resources:
105:
106: if(defined($user) && defined($domain) && defined($courseid) &&
107: defined($coursedom) && defined($resources) ){
108:
109: # Only mail if the conditions are ripe for it:
110: # The user is a student in the course:
111: #
112:
113: if (&is_student()) {
114: # build the subject and message body:
115: # print "sending message to course coordinators.<br />";
116:
117: # Todo: Convert badurl into a url from file path:
118:
119: my $subject = "Error [$badurl] Print failed for $user".'@'.$domain;
120: my $message .= "Print failed to render LaTeX for $user".'@'."$domain\n";
121: $message .= " User was attempting to print: \n";
122: foreach my $resource (split(/:/,$resources)) {
123: $message .= " $resource\n";
124: }
125: $message .= "--------------------LaTeX logfile:------------ \n";
126: $message .= $logfile;
127: $message .= "-----------------LaTeX source file: ------------\n";
128:
129: foreach my $line (@$texfile) {
130: $message .= "$line\n";
131: }
132: my (undef, %receivers) = &Apache::lonmsg::decide_receiver(undef, 0,
133: 1,1,1);
134: # print "<br /> sending...section: $env{'request.course.sec'}";
135: foreach my $dest (keys %receivers) {
136: # print "<br /> dest is $dest";
137: my @destinfo = split(/:/,$dest);
138: my $user = $destinfo[0];
139: my $dom = $destinfo[1];
140:
141: &Apache::lonmsg::user_normal_msg($user, $dom,
142: $subject, $message);
143:
144: # No point in looking at the return status as there's no good
145: # error action I can think of right now (log maybe?).
146: }
147: }
148: }
149: }
150:
151: $|=1;
152: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
153: print <<END;
154: Content-type: text/html
155:
156: <html>
157: <head><title>Bad Cookie</title></head>
158: <body>
159: Your cookie information is incorrect.
160: </body>
161: </html>
162: END
163: return;
164: }
165:
166: my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
167: &Apache::lonlocal::get_language_handle();
168: &Apache::loncommon::content_type(undef,'text/html');
169:
170: print(&Apache::loncommon::start_page('Creating PDF'));
171:
172: my $identifier = $ENV{'QUERY_STRING'};
173: my $texfile = $env{'cgi.'.$identifier.'.file'};
174: my $laystyle = $env{'cgi.'.$identifier.'.layout'};
175: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
176: my $paper = $env{'cgi.'.$identifier.'.paper'};
177: my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
178: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
179: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
180: my $advanced_role = $env{'cgi.'.$identifier.'.role'};
181: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
182: my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
183: my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'});
184:
185:
186: my @names_pack=();
187: if ($student_names=~/_END_/) {
188: @names_pack=split(/_ENDPERSON_/,$student_names);
189: }
190:
191: print "<a href=\"$backref\"><b>Return</b></a> to last resource.<br /><br />";
192:
193: my $figfile = $texfile;
194: $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/;
195: my $duefile = $texfile;
196: $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/;
197: #do we have figures?
198: # print "Figure file: $figfile\n";
199: if (-e $figfile) {
200: # print "$figfile exists\n";
201: my %done_conversion;
202: my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
203: my @content_of_file = <$temporary_file>;
204: close $temporary_file;
205: my $noteps;
206: my %prog_state;
207: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Coverting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80'); }
208: print('<br />');
209: foreach my $not_eps (@content_of_file) {
210: chomp($not_eps);
211: if ($not_eps ne '') {
212: # print "Converting $not_eps"; # Debugging.
213: my $status_statement='EPS picture for '.$not_eps;
214: # print "$status_statement\n";
215: $not_eps=~s|\/\.\/|\/|g;
216: my $eps_f = $not_eps;
217: # $eps_f =~ s/\.[^.]*$/\.eps/i;
218: if ($eps_f=~/\/home\/([^\/]+)\/public_html\//) {
219: $eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;
220: $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
221: } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) {
222: $eps_f=~m/$perlvar{'lonDocRoot'}\/res\/(.+)/;
223: $eps_f = $perlvar{'lonPrtDir'}.'/'.$1;
224: } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) {
225: $eps_f=~/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/;
226: $eps_f = $perlvar{'lonPrtDir'}.'/'.$1.'/'.$2;
227: }
228: $eps_f =~ s/ /\_/g; # Spaces are problematic for system commands and LaTeX.
229: #
230: # If the file is already an .eps or .ps file,
231: # We really just need to copy it from where it was to prtspool
232: # but with the spaces substituted to _'s.
233: #
234: my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);
235: if ($sext =~/ps$/i) {
236: # print "$not_eps is a postscript file. copy to $path\n";
237: &File::Path::mkpath($path,0,0777);
238: #print("Made path: $path");
239: #$not_eps =~ s/^\s+//;
240: #$not_eps =~ s/\s+$//;
241: #$not_eps =~ s/ /\__/g;
242: #print("Copying $not_eps to $eps_f\n");
243: copy("$not_eps", "$eps_f");
244: # print "Copy complete\n";
245: } else {
246:
247: $eps_f .= '.eps'; # Just append the eps ext.
248: my $path=$eps_f;
249: $path =~ s/\/([^\/]+)\.eps$//;
250: # print "Final file path: $path "; # Debugging
251: &File::Path::mkpath($path,0,0777);
252: $not_eps =~ s/^\s+//;
253: $not_eps =~ s/\s+$//;
254: $not_eps =~ s/ /\\ /g;
255: if ( exists($done_conversion{$not_eps})) { next; }
256: if ($advanced_role) {
257: my $prettyname=$not_eps;
258: $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;
259: $prettyname=~s|$perlvar{'lonDocRoot'}/|/|;
260: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
261: 'Converting to EPS '.$prettyname);
262: }
263: $done_conversion{$not_eps}=1;
264: # print "Converting $not_eps -> $eps_f"; # Debugging
265: system("convert $not_eps $eps_f");
266: # check is eps exist in prtspool
267: if (not -e $eps_f) {
268: # converting an animated gif creates either:
269: # anim.gif.eps.0
270: # or
271: # anim.gif-0.eps
272: for (my $i=0;$i<10000;$i++) {
273: if (-e $eps_f.'.'.$i) {
274: rename($eps_f.'.'.$i, $eps_f);
275: last;
276: }
277: my $anim_eps = $eps_f;
278: $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
279: if (-e $anim_eps) {
280: rename($anim_eps, $eps_f);
281: last;
282: }
283: }
284: }
285:
286: # imagemagick 6.2.0-6.2.7 fails to properly handle
287: # convert anim.gif anim.gif.eps
288: # it creates anim.eps instead.
289: if (not -e $eps_f) {
290: my $eps_f2 = $eps_f;
291: $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
292: if(-e $eps_f2) {
293: rename($eps_f2,$eps_f);
294: }
295: }
296: }
297:
298: }
299: }
300: if ($advanced_role) {
301: &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
302: }
303: unlink($figfile);
304: }
305: #print "$texfile\n"; #name of the tex file for debugging only
306: my @texfile=($texfile);
307: if ($number_of_files>1) {
308: @texfile=();
309: for (my $i=1;$i<=$number_of_files;$i++) {
310: my $new_texfile=$texfile;
311: $new_texfile=~s/\.tex//;
312: $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
313: push @texfile,$new_texfile;
314: }
315: }
316:
317: my $ind=-1;
318: my %prog_state;
319: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$number_of_files,'inline','80'); }
320: print "<br />";
321: my $num_files = @texfile;
322: foreach $texfile (@texfile) {
323: my $status_statement='';
324: my $link_text='download PDF';
325: $ind++;
326: my @stud_info=split(/_END_/,$names_pack[$ind]);
327: my @tempo_array=split(/:/,$stud_info[0]);
328: my $name;
329: my $name_range='';
330: if ($tempo_array[3]) {
331: $name=$tempo_array[3];
332: ($name_range) = split(/,/,$name, 2);
333: } else {
334: $name=$tempo_array[0].'@'.$tempo_array[1];
335: $name_range = $tempo_array[0];
336: }
337: if (($name ne "") && ($name ne '@') ) { # Could be printing codes...
338: $link_text='<b>'.$name.'</b>';
339: $status_statement.=$name;
340: }
341: if ($#stud_info>0) {
342: @tempo_array=split(/:/,$stud_info[-1]);
343: if ($tempo_array[3]) {
344: $name=$tempo_array[3];
345: my ($lastname) = split(/,/, $name,2);
346: $name_range .= "-".$lastname;
347: } else {
348: $name=$tempo_array[0].'@'.$tempo_array[1];
349: $name_range .= '-'.$tempo_array[0];
350: }
351: if (($name ne "") && ($name ne '@')) {
352: $link_text.=' - <b>'.$name.'</b>';
353: $status_statement.=' - '.$name;
354:
355: }
356: }
357: if(($num_files > 1) && ($link_text eq 'download PDF')) { # Printing codes
358: $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
359: $status_statement .= basename($texfile);
360: }
361: $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
362: print "<br/>";
363: if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); }
364: # This little piece of dirt puts username ranges into the original tex
365: # Tex filename from which they'll propagate into the other filenames as well.
366: #
367: if (-e $texfile) {
368: if (($name_range ne '') && ($num_files > 1)) {
369: my $newtexfile = $texfile;
370: $newtexfile =~ s/\.tex/$name_range\.tex/;
371: rename($texfile, $newtexfile);
372: $texfile = $newtexfile;
373: }
374: $texfile =~ m/^(.*)\/([^\/]+)$/;
375: my $name_file = $2;
376: my $path_file = $1.'/';
377: chdir $path_file;
378: my $dvi_file= $name_file; $dvi_file =~ s/\.tex/$name_range\.dvi/;
379: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
380: "for $status_statement now LaTeXing file",
381: \%prog_state,$dvi_file);
382: if ($tableofcontents eq 'yes') {
383: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
384: "for $status_statement First LaTeX of file for table of contents",
385: \%prog_state,$dvi_file);
386: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
387: "for $status_statement Second LaTeX of file for table of contents",
388: \%prog_state,$dvi_file);
389: } #to create table of contents
390: my $idxname=$name_file;
391: $idxname=~s/\.tex$/\.idx/;
392: if ($tableofindex eq 'yes') {
393: &busy_wait_command("makeindex $idxname",
394: "making index file",
395: \%prog_state,$idxname);
396: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
397: "for $status_statement now LaTeXing file for index section",
398: \%prog_state,$dvi_file);
399: } #to create index
400: #Do we have a latex error in the log file?
401: my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
402: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
403: my @content_of_file = <$temporary_file>;
404: close $temporary_file;
405: my $body_log_file = join(' ',@content_of_file);
406: $logfilename =~ s/\.log$/\.html/;
407: $temporary_file = IO::File->new('>'.$logfilename);
408: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
409: if ($body_log_file=~m/!\s+Emergency stop/) {
410: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
411: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
412: my $badresource;
413: my $badtext;
414: if ($whereitbegins!=-1 and $whereitends!=-1) {
415: $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
416: $whereitbegins = rindex $badtext,'located in';
417: if ($whereitbegins != -1) {
418:
419: $badresource = substr($badtext, $whereitbegins+27,
420: length($badtext) - $whereitbegins - 48);
421: # print "<br />failing resourcename: $badresource<br />";
422: }
423: }
424:
425: if ($advanced_role) {
426: #LaTeX failed to parse tex file
427: print "<h2>LaTeX could not successfully parse your tex file.</h2>";
428: print "It probably has errors in it.<br />";
429: print "With very high probability this error occured in ".$badtext."<br /><br />";
430: print "Here are the error messages in the LaTeX log file<br /><pre>";
431:
432: my $sygnal = 0;
433: for (my $i=0;$i<=$#content_of_file;$i++) {
434: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
435: $sygnal = 1;
436: }
437: if ($content_of_file[$i]=~m/Here is how much of/) {
438: $sygnal = 0;
439: }
440: if ($sygnal) {
441: print "$content_of_file[$i]";
442: }
443: }
444: print "</pre>\n";
445: # print "<br /> Advanced role <br />";
446: print "<b><big>The link to ";
447: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
448: print "<a href=\"$logfilename\">Your log file </a></big></b>";
449: print "\n";
450: #link tooriginal LaTeX file (included according Michael Hamlin desire)
451: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
452: my @tex_content_of_file = <$tex_temporary_file>;
453: close $tex_temporary_file;
454: my $body_tex_file = join(' ',@tex_content_of_file);
455: $texfile =~ s/\.tex$/aaaaa\.html/;
456: $tex_temporary_file = IO::File->new('>'.$texfile);
457: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
458: print "<br /><br />";
459: print "<b><big>The link to ";
460: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
461: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
462: print "\n";
463: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
464: print ("$help_text");
465:
466: } else { # Student role...
467: # at this point:
468: # $body_log_file - contains the log file.
469: # $name_file - is the name of the LaTeX file.
470: # $identifier - is the unique LaTeX identifier.l
471:
472: print "<br />There are errors in $badtext";
473: print "<br />These errors prevent this resource from printing correctly";
474: my $tex_handle = IO::File->new($name_file);
475: my @tex_contents = <$tex_handle>;
476: &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
477: print "<br />A message has been sent to the instructor describing this failure<br />";
478: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");
479: print ("$help_text");
480:
481: }
482:
483: } elsif ($body_log_file=~m/<inserted text>/) {
484: my $whereitbegins = index $body_log_file,'<inserted text>';
485: print "You are running LaTeX in <b>batch mode</b>.";
486: while ($whereitbegins != -1) {
487: my $tempobegin=$whereitbegins;
488: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
489: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
490: print "<br />It has found an error in".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)." <br /> and corrected it.\n";
491: 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";
492: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
493: }
494: $name_file =~ s/\.tex/\.dvi/;
495: my $new_name_file = $name_file;
496: $new_name_file =~ s/\.dvi/\.ps/;
497: my $papera=$paper;
498: if ($papera eq 'letter') {$papera='';}
499: if ($papera ne '') {$papera='-t'.$papera;}
500: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
501: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
502: "for $status_statement now Converting to PS",
503: \%prog_state,$new_name_file);
504: if (-e $new_name_file) {
505: my $latex_file = $name_file;
506: $latex_file =~ s/\.dvi/\.tex/;
507: &repaginate($new_name_file, $latex_file, $numberofcolumns);
508: #
509: # Now have to re-latex, re dvips again to
510: # get the repaginated postscript.
511: #
512: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
513: "for $status_statement first latex to repaginate",
514: \%prog_state, $name_file);
515: if ($tableofcontents eq 'yes') {
516: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
517: "for $status_statement second latex to repaginate",
518: \%prog_state, $name_file);
519: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
520: "for $status_statement third latex to repaginate",
521: \%prog_state, $name_file);
522: }
523: if ($tableofindex eq 'yes') {
524: my $idxname = $latex_file;
525: $idxname =~ s/\.tex$/\.idx/;
526: &busy_wait_command("makeindex $idxname",
527: "Re-creating index file",
528: \%prog_state, $idxname);
529: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
530: "for $status_statement now Recreting index (latex)",
531: \%prog_state, $dvi_file);
532:
533: }
534: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
535: "for $status_statement dvips to repaginate",
536: \%prog_state, $new_name_file);
537: #
538: # One last little hinky kinky thing.
539: # It's just possible that some fonts could not be maded
540: # at the resolution of the pdf print driver.
541: # In that case a file called missfont.log will have been
542: # created that will contain the commands that were attempted
543: # to create the missing fonts. If we basically
544: # take all the 8000 strings in that file, and
545: # replace them with 600 (the ljfour resolution)
546: # run the commands in that file and redvips,
547: # we'll be able to print the missing glyphs at 600dpi.
548: #
549: # Supposedly it is possible to tune TeX/Metafont to do this
550: # right but I failed to get that to work when following the
551: # docs at the tug site, hence this rather kludgey fix.
552: #
553: # We make the (I think) reasonable assumption that
554: # missing glyphs won't change the pagination and I think
555: # this is true because TeX/dvips will leave a space
556: # instead of these glyphs based on the font metrics
557: # (fancy way to say there will be a blank the size of the missing
558: # glyphs).
559: #
560: my $print_directory = dirname($name_file);
561: my $missfonts_file = $print_directory."/missfont.log";
562: #print("<br /> Missing fonts file is: $missfonts_file");
563: if (-e $missfonts_file) {
564: #print("<br />Missing fonts file exists\n");
565: &create_missing_fonts($missfonts_file,\%prog_state);
566: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
567: "for $status_statement dvips generated missing fonts",
568: \%prog_state, $new_name_file);
569: }
570:
571: #
572: print "\n<h1>PDF output file (see link below)</h1>\n";
573: $new_name_file =~ m/^(.*)\./;
574: my $ps_file = my $tempo_file = $1.'temporar.ps';
575: my $pdf_file = $1.'.pdf';
576: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
577: my $papera=$paper;
578: if ($papera eq 'letter') {$papera='';}
579: if ($papera ne '') {$papera='-p'.$papera;}
580: $comma = "psnup $papera -2 -s1.0 $new_name_file";
581: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
582: "for $status_statement now Modifying PS layout",
583: \%prog_state,$tempo_file);
584: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
585: my $papera=$paper;
586: if ($papera eq 'letter') {$papera='';}
587: if ($papera ne '') {$papera='-p'.$papera;}
588: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
589: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
590: "for $status_statement now Modifying PS layout",
591: \%prog_state,$tempo_file);
592:
593: } else {
594: $ps_file=$new_name_file;
595: }
596: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
597: "for $status_statement now Converting PS to PDF",
598: \%prog_state, $pdf_file);
599:
600: my $texlog = $texfile;
601: my $texaux = $texfile;
602: my $texdvi = $texfile;
603: my $texps = $texfile;
604: $texlog =~ s/\.tex/\.log/;
605: $texaux =~ s/\.tex/\.aux/;
606: $texdvi =~ s/\.tex/\.dvi/;
607: $texps =~ s/\.tex/\.ps/;
608: my @garb = ($texaux,$texdvi,$texps);
609: # unlink @garb;
610: unlink($duefile);
611: print "<a href=\"/prtspool/$pdf_file\">Your PDF document</a>";
612: unlink($missfonts_file);
613:
614: }
615: if ($advanced_role) {
616: print "<br /><br />";
617: print "<b><big>The link to ";
618: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
619: print "<a href=\"$logfilename\">Your log file </a></big></b>";
620: print "\n";
621: #link tooriginal LaTeX file (included according Michael Hamlin desire)
622: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
623: my @tex_content_of_file = <$tex_temporary_file>;
624: close $tex_temporary_file;
625: my $body_tex_file = join(' ',@tex_content_of_file);
626: $texfile =~ s/\.tex$/aaaaa\.html/;
627: $tex_temporary_file = IO::File->new('>'.$texfile);
628: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
629: print "<br /><br />";
630: print "<b><big>The link to ";
631: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
632: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
633: print "\n";
634: }
635:
636: } else {
637: #LaTeX successfully parsed tex file
638: $name_file =~ s/\.tex/\.dvi/;
639: my $new_name_file = $name_file;
640: $new_name_file =~ s/\.dvi/\.ps/;
641: my $papera=$paper;
642: if ($papera eq 'letter') {$papera='';}
643: if ($papera ne '') {$papera='-t'.$papera;}
644: my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";
645: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
646: "for $status_statement now Converting to PS",
647: \%prog_state,$new_name_file);
648: #
649: # One last little hinky kinky thing.
650: # It's just possible that some fonts could not be maded
651: # at the resolution of the pdf print driver.
652: # In that case a file called missfont.log will have been
653: # created that will contain the commands that were attempted
654: # to create the missing fonts. If we basically
655: # take all the 8000 strings in that file, and
656: # replace them with 600 (the ljfour resolution)
657: # run the commands in that file and redvips,
658: # we'll be able to print the missing glyphs at 600dpi.
659: #
660: # Supposedly it is possible to tune TeX/Metafont to do this
661: # right but I failed to get that to work when following the
662: # docs at the tug site, hence this rather kludgey fix.
663: #
664: # We make the (I think) reasonable assumption that
665: # missing glyphs won't change the pagination and I think
666: # this is true because TeX/dvips will leave a space
667: # instead of these glyphs based on the font metrics
668: # (fancy way to say there will be a blank the size of the missing
669: # glyphs).
670: #
671: my $print_directory = dirname($name_file);
672: my $missfonts_file = $print_directory."/missfont.log";
673: #print("<br /> Missing fonts file is: $missfonts_file");
674: if (-e $missfonts_file) {
675: #print("<br />Missing fonts file exists\n");
676: &create_missing_fonts($missfonts_file,\%prog_state);
677: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
678: "for $status_statement dvips generated missing fonts",
679: \%prog_state, $new_name_file);
680: }
681: if (-e $new_name_file) {
682: my $latex_file = $name_file;
683: $latex_file =~ s/\.dvi/\.tex/;
684: &repaginate($new_name_file, $latex_file, $numberofcolumns);
685: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
686: "for $status_statement first latex to repaginate",
687: \%prog_state, $name_file);
688: if ($tableofcontents eq 'yes') {
689: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
690: "for $status_statement second latex to repaginate",
691: \%prog_state, $name_file);
692: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
693: "for $status_statement third latex to repaginate",
694: \%prog_state, $name_file);
695: }
696: if ($tableofindex eq 'yes') {
697: my $idxname = $latex_file;
698: $idxname =~ s/\.tex$/\.idx/;
699: &busy_wait_command("makeindex $idxname",
700: "Re-creating index file",
701: \%prog_state, $idxname);
702: &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",
703: "for $status_statement now Recreting index (latex)",
704: \%prog_state, $dvi_file);
705: }
706: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
707: "for $status_statement dvips to repaginate",
708: \%prog_state, $new_name_file);
709:
710: print "<br />";
711: $new_name_file =~ m/^(.*)\./;
712: my $ps_file = my $tempo_file = $1.'temporar.ps';
713: my $pdf_file = $1.'.pdf';
714: $papera=~s/t/p/;
715: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
716: $comma = "psnup $papera -2 -s1.0 $new_name_file";
717: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
718: "for $status_statement now Modifying PS layout",
719: \%prog_state,$tempo_file);
720: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
721: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';
722: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
723: "for $status_statement now Modifying PS layout",
724: \%prog_state,$tempo_file);
725: } else {
726: $ps_file=$new_name_file;
727: }
728: my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
729: 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
730: 'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
731: 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
732: 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
733: 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
734: 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
735: 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
736: };
737: if ($paper ne 'letter') {
738: open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n";
739: my $new_ps_file='new'.$ps_file;
740: open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n";
741: print FFHS $addtoPSfile->{$paper}."\n";
742: while (<FFH>) {
743: print FFHS $_;
744: }
745: close(FFH);
746: close(FFHS);
747: $ps_file=$new_ps_file;
748: }
749: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
750: "for $status_statement now Converting PS to PDF",
751: \%prog_state,$pdf_file);
752:
753: my $texlog = $texfile;
754: my $texaux = $texfile;
755: my $texdvi = $texfile;
756: my $texps = $texfile;
757: $texlog =~ s/\.tex/\.log/;
758: $texaux =~ s/\.tex/\.aux/;
759: $texdvi =~ s/\.tex/\.dvi/;
760: $texps =~ s/\.tex/\.ps/;
761: my @garb = ($texlog,$texaux,$texdvi,$texps);
762: # unlink @garb;
763: unlink($duefile);
764: print "<a href=\"/prtspool/$pdf_file\">$link_text - click here to download pdf</a>";
765: print "\n";
766: }
767: unlink($missfonts_file);
768:
769: }
770: } else {
771: print "LaTeX file $texfile was not created successfully";
772: }
773: }
774: print "<br />";
775: if ($number_of_files>1) {
776: my $zipfile=$texfile[0];
777: $zipfile=~s/\.tex/\.zip/;
778: my $statement="zip $zipfile";
779: foreach my $file (@texfile) {
780: $file=~s/\.tex/.\pdf/;
781: $statement.=' '.$file;
782: }
783: print("<pre>Zip Output:\n");
784: system($statement);
785: print("</pre>");
786: $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
787: print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";
788: }
789: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
790: print(&Apache::loncommon::end_page());
791: my $done;
792:
793: sub REAPER {
794: $done=1;
795: }
796:
797: sub busy_wait_command {
798: my ($command,$message,$progress_win,$output_file)=@_;
799:
800: $SIG{CHLD} = \&REAPER;
801: $done=0;
802: my $pid=open(CMD,"$command |");
803: if ($advanced_role) {
804: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
805: }
806: while(!$done) {
807: sleep 1;
808: my $extra_msg;
809: if ($output_file) {
810: my $size=(stat($output_file))[7];
811: $extra_msg=", $size bytes generated";
812: }
813: if ($advanced_role) {
814: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,
815: $message.$extra_msg);
816: }
817: }
818: $SIG{CHLD}='IGNORE';
819: close(CMD);
820: }
821:
822: # Repagninate
823: # What we need to do:
824: # - Count the number of pages in each student.
825: # - Rewrite the latex file replacing the \specials that
826: # mark the end of student with an appropriate number of newlines.
827: # parameters:
828: # psfile - Postscript filename
829: # latexfile - LaTeX filename
830: # columns - number of columns.
831: sub repaginate {
832:
833: # We will try to do this in 2 passes through the postscript since
834: # the postscript is potentially large, to do 2 passes, the first pass
835: # must be able to calculate the total number of document pages so that
836: # at the beginning of the second pass we already know how to replace
837: # %%Pages:
838:
839: # Figure out
840: # 1. Number of pages in the document
841: # 2. Maximum number of pages in a student
842: # 3. Number of pages in each student.
843:
844: my ($postscript_filename, $latex_filename, $num_columns) = @_;
845: open(PSFILE, "<$postscript_filename");
846: my $line;
847: my $total_pages; # Total pages in document.
848: my $seen_pages = 0; # There are several %%Pages only the first is useful
849: my @pages_in_student; # For each student his/her initial page count.
850: my $max_pages = 0; # Pages in 'longest' student.
851: my $page_number = 0;
852: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
853: &mt("Counting pages for student: [_1]",1));
854:
855: while ($line = <PSFILE>) {
856:
857: # Check for total pages (%%Pages:)
858:
859: if (($line =~ /^%%Pages:/) && (!$seen_pages)) {
860: my @pageinfo = split(/ /,$line);
861: $total_pages = $pageinfo[1];
862: $seen_pages = 1;
863: }
864: # Check for %%Page: n m $page_number will be the
865: # biggest of these until we see an endofstudent.
866: # Note that minipages generate spurious %Page: 1 1's so
867: # we only are looking for the largest n (n is page number at the
868: # bottom of the page, m the page number within the document.
869: #
870:
871: if ($line =~ /^%%Page:\s+\d+\s+\d+/) {
872: my @pageinfo = split(/\s+/, $line);
873: if ($page_number < $pageinfo[1]) {
874: $page_number = $pageinfo[1];
875: } elsif ($pageinfo[2] ne 1) {
876: # current page count reset, and it's not because of a
877: # minipage
878: # - save the page_number, reset and, if necessary
879: # update max_pages.
880: push(@pages_in_student, $page_number);
881: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
882: &mt("Counting pages for student: [_1]", scalar(@pages_in_student)));
883: if ($page_number > $max_pages) {
884: $max_pages = $page_number;
885: }
886: $page_number = $pageinfo[1];
887: }
888: }
889:
890:
891: }
892: # file ended so one more student
893: push(@pages_in_student, $page_number);
894: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
895: &mt("Counting pages for student: [_1]",scalar(@pages_in_student)));
896: if ($page_number > $max_pages) {
897: $max_pages = $page_number;
898: }
899: $page_number = 0;
900:
901: close(PSFILE);
902:
903: # If 2 columns, max_pages must go to an even number of columns:
904:
905:
906: if ($num_columns == 2) {
907: if ($max_pages % 2) {
908: $max_pages++;
909: }
910: }
911:
912: # Now rewrite the LaTex file, substituting our \special
913: # with an appropriate number of \newpage directives.
914:
915: my $outfilename = $latex_filename."temp";
916:
917: open(LATEXIN, "<$latex_filename");
918: open(LATEXOUT, ">$outfilename");
919:
920:
921: my $student_number = 0; # Index of student we're working on.
922: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
923: "Repaginating student ".$student_number+1);
924:
925: while (my $line = <LATEXIN>) {
926: if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {
927: # only end of student stamp if next line is ENDOFSTUDENTSTAMP:
928:
929:
930: # End of student replace with 0 or more newpages.
931:
932: my $addlines = $max_pages - $pages_in_student[$student_number];
933: while($addlines) {
934: print LATEXOUT '\clearpage \strut \clearpage';
935:
936: $addlines--;
937: }
938:
939: $student_number++;
940: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
941: "Repaginating student ".$student_number+1);
942:
943: } else {
944: print LATEXOUT $line;
945: }
946: }
947:
948: close(LATEXIN);
949: close(LATEXOUT);
950: rename($outfilename, $latex_filename);
951:
952: }
953:
954: #
955: # Create missing fonts given a latex missfonts.log file.
956: # This file will have lines like:
957: #
958: # mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 tcrm0500
959: #
960: # We want to execute those lines with the 8000's changed to 600's
961: # in order to match the resolution of the ljfour printer.
962: # Of course if some wiseguy has changed the default printer from ljfour
963: # in the dvips's config.ps file that will break so we'll also
964: # ensure that --mfmode is ljfour.
965: #
966: sub create_missing_fonts {
967: my ($fontfile, $state) = @_;
968:
969: # Open and read in the font file..we'll read it into the array
970: # font_commands.
971: #
972: open(my $font_handle, $fontfile);
973: my @font_commands = <$font_handle>;
974:
975: # make the list contain each command only once
976: my %uniq;
977: @font_commands = map { $uniq{$_}++ == 0 ? $_ : () } @font_commands;
978:
979: # Now process each command replacing the appropriate 8000's with
980: # 600's ensuring that font names with 8000's in them are not corrupted.
981: # and if the --mfmode is not ljfour we turn it into ljfour.
982: # Then we execute the command.
983: #
984:
985: foreach my $command (@font_commands) {
986: #print("<br />Raw command: $command");
987: $command =~ s/ 8000/ 600/g; # dpi directives.
988: $command =~ s/\/8000/\/600/g; # mag directives.
989: #print("<br />After dpi replacements: $command");
990:
991: my @cmdarray = split(/ /,$command);
992: for (my $i =0; $i < scalar(@cmdarray); $i++) {
993: if ($cmdarray[$i] eq '--mfmode') {
994: $cmdarray[$i+1] = "ljfour";
995: }
996: }
997: #print("<br /> before reassembly : (@cmdarray)");
998: $command = join(" ", (@cmdarray));
999:
1000: #print("<br />Creating fonts via command: $command");
1001: &busy_wait_command("$command 1>/dev/null 2>/dev/null",
1002: "Creating missing font",
1003: $state);
1004:
1005: }
1006:
1007: }
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