1: #!/usr/bin/perl
2: # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
3: #
4: # $Id: printout.pl,v 1.59 2004/07/28 22:00:14 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 IO::File;
33: use Image::Magick;
34: use Apache::lonhtmlcommon;
35: use Apache::loncommon;
36: use Apache::lonlocal;
37:
38: use strict;
39: $|=1;
40: my %origENV=%ENV;
41: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
42: print <<END;
43: Content-type: text/html
44:
45: <html>
46: <head><title>Bad Cookie</title></head>
47: <body>
48: Your cookie information is incorrect.
49: </body>
50: </html>
51: END
52: return;
53: }
54: &Apache::lonlocal::get_language_handle();
55: &Apache::loncommon::content_type(undef,'text/html');
56: my $bodytag=&Apache::loncommon::bodytag('Creating PDF','','');
57: print $bodytag;
58:
59: my $identifier = $ENV{'QUERY_STRING'};
60: my $texfile = $ENV{'cgi.'.$identifier.'.file'};
61: my $laystyle = $ENV{'cgi.'.$identifier.'.layout'};
62: my $numberofcolumns = $ENV{'cgi.'.$identifier.'.numcol'};
63: my $selectionmade = $ENV{'cgi.'.$identifier.'.selection'};
64: my $tableofcontents = $ENV{'cgi.'.$identifier.'tableofcontents'};
65: my $tableofindex = $ENV{'cgi.'.$identifier.'tableofindex'};
66: my $advans_role = $ENV{'cgi.'.$identifier.'role'};
67: my $number_of_files = $ENV{'cgi.'.$identifier.'numberoffiles'}+1;
68: my $student_names = $ENV{'cgi.'.$identifier.'studentnames'};
69: my $backref = $ENV{'cgi.'.$identifier.'backref'};
70:
71: my $adv = $ENV{'request.role.adv'};
72:
73: my @names_pack=();
74: if ($student_names=~/_END_/) {
75: @names_pack=split(/_ENDPERSON_/,$student_names);
76: }
77: #got what we needed reset ENV in case it is to big for system
78: %ENV=%origENV;
79:
80: my $figfile = $texfile;
81: $figfile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.dat/;
82: my $duefile = $texfile;
83: $duefile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.due/;
84: #do we have figures?
85: if (-e $figfile) {
86: my %done_conversion;
87: my $temporary_file=IO::File->new($figfile) || die "Couldn't open file for reading: $!\n";
88: my @content_of_file = <$temporary_file>;
89: close $temporary_file;
90: my $noteps;
91: my %prog_state;
92: if ($adv) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Coverting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80'); }
93: foreach my $not_eps (@content_of_file) {
94: chomp($not_eps);
95: if ($not_eps ne '') {
96: my $status_statement='EPS picture for '.$not_eps;
97: $not_eps=~s|\/\.\/|\/|g;
98: my $eps_f = $not_eps;
99: $eps_f =~ s/\.[^.]*$/\.eps/i;
100: if ($eps_f=~/\/home\/([^\/]+)\/public_html\//) {
101: $eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;
102: $eps_f = '/home/httpd/prtspool/'.$eps_f;
103: } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\//) {
104: $eps_f=~m/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\/(.+)/;
105: $eps_f = '/home/httpd/prtspool/'.$1;
106: } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\//) {
107: $eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/;
108: $eps_f = '/home/httpd/prtspool/'.$1.'/'.$2;
109: }
110: my $path=$eps_f;
111: $path=~s/\/([^\/]+)\.eps$//;
112: File::Path::mkpath($path,0,0777);
113: my $image = Image::Magick->new;
114: $not_eps =~ s/^\s+//;
115: $not_eps =~ s/\s+$//;
116: if ( exists($done_conversion{$not_eps})) {
117: next;
118: }
119: if ($adv) {
120: my $prettyname=$not_eps;
121: $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;
122: $prettyname=~s|$Apache::lonnet::perlvar{'lonDocRoot'}/|/|;
123: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Converting to EPS '.$prettyname); }
124: $done_conversion{$not_eps}=1;
125: my $status = $image->Read($not_eps);
126: if ($status) {print " $status ";}
127: $image->Set(page => '+100+200');
128: $status = $image->Write($eps_f);
129: if ($status) {print " $status ";}
130: #check is eps exist in prtspool
131: if(not -e $eps_f) {
132: for (my $i=0;$i<10000;$i++) {
133: if (-e $eps_f.'.'.$i) {
134: rename $eps_f.'.'.$i, $eps_f;
135: last;
136: }
137: }
138: }
139: }
140: }
141: if ($adv) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
142: unlink($figfile);
143: }
144: #print "$texfile\n"; #name of the tex file for debugging only
145: my @texfile=($texfile);
146: if ($number_of_files>1) {
147: @texfile=();
148: for (my $i=1;$i<=$number_of_files;$i++) {
149: my $new_texfile=$texfile;
150: $new_texfile=~s/\.tex/_$i\.tex/;
151: push @texfile,$new_texfile;
152: }
153: }
154:
155: my $ind=-1;
156: my %prog_state;
157: if ($adv) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$number_of_files,'inline','80'); }
158: my $final_statement="<a href=\"$backref\"><b>Return</b></a> to last resource.<br /><br />Generated PDF File for:<br />";
159: foreach $texfile (@texfile) {
160: my $status_statement='';
161: my $link_text='download PDF';
162: $ind++;
163: my @stud_info=split(/_END_/,$names_pack[$ind]);
164: my @tempo_array=split(/:/,$stud_info[0]);
165: my $name;
166: if ($tempo_array[3]) {
167: $name=$tempo_array[3];
168: } else {
169: $name=$tempo_array[0].'@'.$tempo_array[1];
170: }
171: $link_text='<b>'.$name.'</b> ';
172: $status_statement.=$name;
173: if ($#stud_info>0) {
174: @tempo_array=split(/:/,$stud_info[-1]);
175: if ($tempo_array[3]) {
176: $name=$tempo_array[3];
177: } else {
178: $name=$tempo_array[0].'@'.$tempo_array[1];
179: }
180: $link_text.='- <b>'.$name.':</b> ';
181: $status_statement.=' - '.$name;
182: }
183: if ($adv) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); }
184: if (-e $texfile) {
185: $texfile =~ m/^(.*)\/([^\/]+)$/;
186: my $name_file = $2;
187: my $path_file = $1.'/';
188: chdir $path_file;
189: my $dvi_file= $name_file; $dvi_file =~ s/\.tex/\.dvi/;
190: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
191: "for $status_statement now LaTeXing file",
192: \%prog_state,$dvi_file);
193: if ($tableofcontents eq 'yes') {
194: system("latex $name_file 1>/dev/null 2>/dev/null");
195: } #to create table of contents
196: my $idxname=$name_file;
197: $idxname=~s/\.tex$/\.idx/;
198: if ($tableofindex eq 'yes') {
199: system("makeindex $idxname");
200: system("latex $name_file 1>/dev/null 2>/dev/null");
201: } #to create index
202: #Do we have a latex error in the log file?
203: my $logfilename = $texfile;
204: $logfilename =~ s/\.tex$/\.log/;
205: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open file for reading: $!\n";
206: my @content_of_file = <$temporary_file>;
207: close $temporary_file;
208: my $body_log_file = join(' ',@content_of_file);
209: $logfilename =~ s/\.log$/\.html/;
210: $temporary_file = IO::File->new('>'.$logfilename);
211: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
212: if ($body_log_file=~m/!\s+Emergency stop/) {
213: #LaTeX failed to parse tex file
214: print "<h2>LaTeX could not successfully parse your tex file.</h2>";
215: print "It probably has errors in it.<br />";
216: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
217: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
218: if ($whereitbegins!=-1 and $whereitends!=-1) {
219: print "With very high probability this error occured in ".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)."<br /><br />";
220: }
221: print "Here are the error messages in the LaTeX log file</br><br />";
222: my $sygnal = 0;
223: for (my $i=0;$i<=$#content_of_file;$i++) {
224: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
225: $sygnal = 1;
226: }
227: if ($content_of_file[$i]=~m/Here is how much of/) {
228: $sygnal = 0;
229: }
230: if ($sygnal) {
231: print "$content_of_file[$i]<br />";
232: }
233: }
234: if ($advans_role) {
235: print "<b><big>The link to ";
236: $logfilename=~s/\/home\/httpd//;
237: print "<a href=\"$logfilename\">Your log file </a></big></b>";
238: print "\n";
239: #link tooriginal LaTeX file (included according Michael Hamlin desire)
240: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open file for reading: $!\n";
241: my @tex_content_of_file = <$tex_temporary_file>;
242: close $tex_temporary_file;
243: my $body_tex_file = join(' ',@tex_content_of_file);
244: $texfile =~ s/\.tex$/aaaaa\.html/;
245: $tex_temporary_file = IO::File->new('>'.$texfile);
246: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
247: print "<br /><br />";
248: print "<b><big>The link to ";
249: $texfile=~s/\/home\/httpd//;
250: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
251: print "\n";
252: }
253:
254: } elsif ($body_log_file=~m/<inserted text>/) {
255: my $whereitbegins = index $body_log_file,'<inserted text>';
256: print "You are running LaTeX in <b>batch mode</b>.";
257: while ($whereitbegins != -1) {
258: my $tempobegin=$whereitbegins;
259: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
260: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
261: print "<br />It has found an error in".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)." <br /> and corrected it.\n";
262: 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";
263: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
264: }
265: $name_file =~ s/\.tex/\.dvi/;
266: my $new_name_file = $name_file;
267: $new_name_file =~ s/\.dvi/\.ps/;
268: my $comma = "dvips -Ppdf -G0 -o $new_name_file";
269: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
270: "for $status_statement now Converting to PS",
271: \%prog_state,$new_name_file);
272: if (-e $new_name_file) {
273: print "<h1>PDF output file (see link below)</h1>\n";
274: $new_name_file =~ m/^(.*)\./;
275: my $ps_file = my $tempo_file = $1.'temporar.ps';
276: my $pdf_file = $1.'.pdf';
277: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
278: $comma = "psnup -2 -s1.0 $new_name_file";
279: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
280: "for $status_statement now Modifying PS layout",
281: \%prog_state,$tempo_file);
282: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
283: $comma = 'pstops -pletter "2:0+1(0.48w,0)"';
284: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
285: "for $status_statement now Modifying PS layout",
286: \%prog_state,$tempo_file);
287: } else {
288: $ps_file=$new_name_file;
289: }
290: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
291: "for $status_statement now Converting PS to PDF",
292: \%prog_state, $pdf_file);
293:
294: my $texlog = $texfile;
295: my $texaux = $texfile;
296: my $texdvi = $texfile;
297: my $texps = $texfile;
298: $texlog =~ s/\.tex/\.log/;
299: $texaux =~ s/\.tex/\.aux/;
300: $texdvi =~ s/\.tex/\.dvi/;
301: $texps =~ s/\.tex/\.ps/;
302: my @garb = ($texaux,$texdvi,$texps);
303: # unlink @garb;
304: unlink $duefile;
305: print "<a href=\"/prtspool/$pdf_file\">Your PDF document</a>";
306: if ($advans_role) {
307: print "<br /><br />";
308: print "<b><big>The link to ";
309: $logfilename=~s/\/home\/httpd//;
310: print "<a href=\"$logfilename\">Your log file </a></big></b>";
311: print "\n";
312: #link tooriginal LaTeX file (included according Michael Hamlin desire)
313: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open file for reading: $!\n";
314: my @tex_content_of_file = <$tex_temporary_file>;
315: close $tex_temporary_file;
316: my $body_tex_file = join(' ',@tex_content_of_file);
317: $texfile =~ s/\.tex$/aaaaa\.html/;
318: $tex_temporary_file = IO::File->new('>'.$texfile);
319: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
320: print "<br /><br />";
321: print "<b><big>The link to ";
322: $texfile=~s/\/home\/httpd//;
323: print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";
324: print "\n";
325: }
326: }
327: } else {
328: #LaTeX successfully parsed tex file
329: $name_file =~ s/\.tex/\.dvi/;
330: my $new_name_file = $name_file;
331: $new_name_file =~ s/\.dvi/\.ps/;
332: my $comma = "dvips -Ppdf -G0 -o $new_name_file";
333: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
334: "for $status_statement now Converting to PS",
335: \%prog_state,$new_name_file);
336: if (-e $new_name_file) {
337: print "<br />$final_statement ";
338: $final_statement='';
339: $new_name_file =~ m/^(.*)\./;
340: my $ps_file = my $tempo_file = $1.'temporar.ps';
341: my $pdf_file = $1.'.pdf';
342: if ($laystyle eq 'album' and $numberofcolumns eq '2') {
343: $comma = "psnup -2 -s1.0 $new_name_file";
344: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
345: "for $status_statement now Modifying PS layout",
346: \%prog_state,$tempo_file);
347: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
348: $comma = 'pstops -pletter "2:0+1(0.48w,0)"';
349: &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",
350: "for $status_statement now Modifying PS layout",
351: \%prog_state,$tempo_file);
352: } else {
353: $ps_file=$new_name_file;
354: }
355: &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",
356: "for $status_statement now Converting PS to PDF",
357: \%prog_state,$pdf_file);
358:
359: my $texlog = $texfile;
360: my $texaux = $texfile;
361: my $texdvi = $texfile;
362: my $texps = $texfile;
363: $texlog =~ s/\.tex/\.log/;
364: $texaux =~ s/\.tex/\.aux/;
365: $texdvi =~ s/\.tex/\.dvi/;
366: $texps =~ s/\.tex/\.ps/;
367: my @garb = ($texlog,$texaux,$texdvi,$texps);
368: # unlink @garb;
369: unlink $duefile;
370: print "<a href=\"/prtspool/$pdf_file\">$link_text</a>";
371: print "\n";
372: }
373: }
374: } else {
375: print "LaTeX file $texfile was not created successfully";
376: }
377: }
378: print "<br />";
379: if ($number_of_files>1) {
380: my $zipfile=$texfile[0];
381: $zipfile=~s/\.tex/\.zip/;
382: my $statement="zip $zipfile";
383: foreach my $file (@texfile) {
384: $file=~s/\.tex/.\pdf/;
385: $statement.=' '.$file;
386: }
387: print("<pre>Zip Output:\n");
388: system($statement);
389: print("</pre>");
390: $zipfile=~s/\/home\/httpd//;
391: print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";
392: }
393: if ($adv) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
394:
395: my $done;
396: sub REAPER {
397: $done=1;
398: }
399:
400: sub busy_wait_command {
401: my ($command,$message,$progress_win,$output_file)=@_;
402:
403: $SIG{CHLD} = \&REAPER;
404: $done=0;
405: my $pid=open(CMD,"$command |");
406: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
407: while(!$done) {
408: sleep 1;
409: my $extra_msg;
410: if ($output_file) {
411: my $size=(stat($output_file))[7];
412: $extra_msg=", $size bytes generated";
413: }
414: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,
415: $message.$extra_msg);
416: }
417: $SIG{CHLD}='IGNORE';
418: close(CMD);
419: }
420:
421:
422:
423:
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