Annotation of loncom/interface/printout.pl, revision 1.143

1.1       sakharuk    1: #!/usr/bin/perl
1.37      albertel    2: # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
                      3: #
1.143   ! bisitz      4: # $Id: printout.pl,v 1.142 2009/06/02 12:20:14 bisitz Exp $
1.37      albertel    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: 
1.39      sakharuk   29: use lib '/home/httpd/lib/perl';
1.76      albertel   30: use LONCAPA::loncgi;
1.38      sakharuk   31: use File::Path;
1.88      foxr       32: use File::Basename;
1.111     foxr       33: use File::Copy;
1.6       sakharuk   34: use IO::File;
1.7       sakharuk   35: use Image::Magick;
1.97      albertel   36: use Apache::lonhtmlcommon();
1.80      albertel   37: use Apache::lonnet;
1.97      albertel   38: use Apache::loncommon();
1.51      albertel   39: use Apache::lonlocal;
1.97      albertel   40: use Apache::lonmsg();
1.77      foxr       41: use LONCAPA::Enrollment;
1.123     albertel   42: use LONCAPA::Configuration;
1.47      sakharuk   43: 
1.59      albertel   44: use strict;
1.77      foxr       45: 
1.132     www        46: my $busy_wait_timeout = 30; 
1.81      foxr       47: 
1.141     foxr       48: 
                     49: my $debugging = 0;
                     50: 
1.135     foxr       51: sub debug {
1.141     foxr       52:     if ($debugging) {
                     53: 	my ($text) = @_;
                     54: 	print "$text <br />\n";
                     55:     }
1.135     foxr       56: }
                     57: 
1.77      foxr       58: #   Determine if a user is operating as a student for this course/domain.
                     59: #Parameters:
1.92      albertel   60: #    none
1.77      foxr       61: #Implicit:
                     62: #    $env{request.role} contains the role under which this user operated this
                     63: #                       this request.
                     64: sub is_student {
1.92      albertel   65:     return ($env{'request.role'}=~/^st\./);
1.77      foxr       66: }
                     67: 
                     68: #
                     69: #   Debugging:  Dump the environment for debugging.
                     70: #
                     71: sub dumpenv  {
1.84      albertel   72:     print "<br />-------------------<br />";
1.77      foxr       73:     foreach my $key (sort (keys %env)) {
1.84      albertel   74: 	print "<br />$key -> $env{$key}";
1.77      foxr       75:     }
1.84      albertel   76:     print "<br />-------------------<br />";
1.77      foxr       77: }
                     78: 
                     79: #
                     80: #   This sub sends a message to the appropriate person if there was an error
                     81: #   rendering the latex  At present, there's only one case to consider:
                     82: #   a student printing inside a course results in messages to the course coordinator.
                     83: #Parmaeters:
                     84: #    identifier -  The unique identifier of this cgi request.
1.81      foxr       85: #    badresource-  Filepath to most likely failing 
1.77      foxr       86: #    logfile    -  The contents of the log file (included in the message).
                     87: #    texfile    -  reference to an array containing the LaTeX input file
                     88: #                  (included in the message).
                     89: #Implicit inputs:
                     90: #   From the environment:
                     91: #       cgi.$identifier.user     - User doing the printing.
                     92: #       cgi.$identifier.domain   - Domain the user is logged in on with printing.
                     93: #       cgi.$identifier.courseid - Id of the course (if this is a course).
                     94: #       cgi.$identifier.coursedom- Domain in which course was constituted.
                     95: #       cgi.$identifier.resources - List of resource URL's for which the print
                     96: #                                  was attempted.
                     97: # 
                     98: sub send_error_mail {
1.81      foxr       99:     my ($identifier, $badresource, $logfile, $texfile) = @_;
1.77      foxr      100:     my $user     = $env{"cgi.$identifier.user"};
                    101:     my $domain   = $env{"cgi.$identifier.domain"};
                    102:     my $courseid = $env{"cgi.$identifier.courseid"};
                    103:     my $coursedom= $env{"cgi.$identifier.coursedom"};
                    104:     my $resources= $env{"cgi.$identifier.resources"};
                    105: 
1.81      foxr      106:     #  resource file->URL
                    107:     #
                    108:     my $badurl = &Apache::lonnet::declutter($badresource);
                    109: 
                    110:     # &dumpenv();
1.77      foxr      111: 
                    112: 
                    113: 
                    114:     #  Only continue if there is a user, domain, courseid, course domain
                    115:     #  and resources:
                    116: 
                    117:     if(defined($user)       && defined($domain) && defined($courseid) &&
                    118:        defined($coursedom)  && defined($resources) ){
                    119: 	   
                    120: 	#  Only mail if the conditions are ripe for it:
                    121: 	#  The user is a student in the course:
                    122: 	#
                    123: 	
1.92      albertel  124: 	if (&is_student()) {
1.77      foxr      125: 	    # build the subject and message body:
1.141     foxr      126: 	    &debug("sending message to course coordinators.");
1.81      foxr      127: 
                    128: 	    # Todo: Convert badurl into a url from file path:
                    129: 
                    130: 	    my $subject  = "Error [$badurl] Print failed for $user".'@'.$domain;
1.77      foxr      131: 	    my $message .= "Print failed to render LaTeX for $user".'@'."$domain\n";
                    132: 	    $message    .= "  User was attempting to print: \n";
1.91      albertel  133: 	    foreach my $resource (split(/:/,$resources)) {
                    134: 		$message    .= "       $resource\n";
                    135: 	    }
1.77      foxr      136: 	    $message    .= "--------------------LaTeX logfile:------------ \n";
                    137: 	    $message    .= $logfile;
                    138: 	    $message    .= "-----------------LaTeX source file: ------------\n";
                    139: 	    
                    140: 	    foreach my $line (@$texfile) {
                    141: 		$message .= "$line\n";
                    142: 	    }
1.122     albertel  143: 	    my (undef, %receivers) = &Apache::lonmsg::decide_receiver(undef, 0,
                    144: 								      1,1,1);
1.141     foxr      145: 	    &debug("sending...section:  $env{'request.course.sec'}");
1.81      foxr      146: 	    foreach my $dest (keys %receivers) {
1.141     foxr      147: 		&debug("dest is $dest");
1.77      foxr      148: 		my @destinfo = split(/:/,$dest);
                    149: 		my $user = $destinfo[0];
                    150: 		my $dom  = $destinfo[1];
                    151: 
                    152: 		&Apache::lonmsg::user_normal_msg($user, $dom,
                    153: 						 $subject, $message);
                    154: 		
                    155: 		# No point in looking at the return status as there's no good
                    156: 		# error action I can think of right now (log maybe?).
                    157: 	    }
                    158: 	}
                    159:     }
                    160: }
                    161: 
1.49      albertel  162: $|=1;
1.39      sakharuk  163: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
                    164:     print <<END;
                    165: Content-type: text/html
                    166: 
                    167: <html>
                    168: <head><title>Bad Cookie</title></head>
                    169: <body>
1.40      sakharuk  170: Your cookie information is incorrect.
1.39      sakharuk  171: </body>
                    172: </html>
                    173: END
                    174:     return;
                    175: }
1.123     albertel  176: 
                    177: my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
1.133     foxr      178: &Apache::lonlocal::get_language_handle();
                    179: &Apache::loncommon::content_type(undef,'text/html');
1.128     albertel  180: $env{'request.noversionuri'} = '/cgi-bin/printout.pl';
1.143   ! bisitz    181: # Breadcrumbs
        !           182: #FIXME: Choose better/different breadcrumbs?!? Links?
        !           183: my $brcrum = [{'href' => '',
        !           184:                'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
        !           185:               {'href' => '',
        !           186:                'text' => 'Preparing Printout'},
        !           187:               {'href' => '',
        !           188:                'text' => 'Creating PDF'}];
        !           189: print(&Apache::loncommon::start_page('Creating PDF',
        !           190:                                      undef,
        !           191:                                      {'bread_crumbs' => $brcrum,}));
1.133     foxr      192: 
                    193: my $identifier = $ENV{'QUERY_STRING'};
                    194: my $texfile = $env{'cgi.'.$identifier.'.file'};
                    195: my $laystyle = $env{'cgi.'.$identifier.'.layout'};
                    196: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
                    197: my $paper = $env{'cgi.'.$identifier.'.paper'};
                    198: my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
                    199: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
                    200: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
                    201: my $advanced_role = $env{'cgi.'.$identifier.'.role'};
                    202: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
                    203: my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
                    204: my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'});
                    205: 
                    206: 
                    207: my @names_pack=();
                    208: if ($student_names=~/_END_/) {  
                    209:     @names_pack=split(/_ENDPERSON_/,$student_names);
                    210: }
                    211: if ($backref) {
                    212:     print('<p>'.&mt("[_1]Return[_2] to editing resource.",
                    213: 		    "<a href=\"$backref\"><b>","</b></a>").'</p>');
                    214: }
                    215: my $figfile = $texfile;
                    216: $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/;
                    217: my $duefile = $texfile;
                    218: $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/;
                    219: 
                    220: 
                    221: #-------------------------------------------------------------------------------------
                    222: #
                    223: #   Each print may have associated with it a file that contains a set of figures
                    224: #   that need to be converted to .eps from whatever form they were in when included
                    225: #   in the resource.  The name of the figure file is in $figfile.  If it exists,
                    226: #   it contains the names of the files that need to be converted, one per line.
                    227: #
                    228: 
1.141     foxr      229: &debug("Figure file is $figfile");
                    230: 
1.133     foxr      231: if (-e $figfile) {
1.141     foxr      232:     &debug( "Figure file exists");
                    233:     &debug("$figfile exists");
1.133     foxr      234:     my %done_conversion;
                    235:     my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
                    236:     my @content_of_file = <$temporary_file>;
                    237:     close $temporary_file;  
                    238:     my $noteps;
                    239:     my %prog_state;
                    240:     if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Converting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80');  }
                    241:     print('<br />');
                    242:     foreach my $not_eps (@content_of_file) {
                    243: 	chomp($not_eps);
1.141     foxr      244: 	&debug( "Being asked to convert $not_eps");
1.133     foxr      245: 	if ($not_eps ne '') {
                    246: 	    $not_eps=~s|\/\.\/|\/|g;
                    247: 	    if (!$done_conversion{$not_eps}) { #  Only convert multiple includes once.
                    248: 		&convert_figure($not_eps);
                    249: 		$done_conversion{$not_eps} = 1;
                    250: 	    }
                    251: 	}
                    252:     }
                    253:     if ($advanced_role) { 
                    254: 	&Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); 
                    255:     }
                    256:     unlink($figfile);
                    257: }
                    258: #     End of figure conversion section:
                    259: #
                    260: #--------------------------------------------------------------------------------------------
1.135     foxr      261: #
                    262: #  Figure out which Tex files we need to process.  If this is a large class e.g.
                    263: #  the instructor may have asked that the printout be by section, one section per file
                    264: #  in that case, the output tex fiels will be the base filename with 3 digit serial numbers
                    265: #  just prior to the .tex file type.
                    266: #  By the time this loop exits, @texfile is an array of the files to process.
                    267: #
1.133     foxr      268: 
1.135     foxr      269: my @texfile=($texfile);
                    270: if ($number_of_files>1) {
                    271:     @texfile=();
                    272:     for (my $i=1;$i<=$number_of_files;$i++) {
                    273: 	my $new_texfile=$texfile;
                    274: 	$new_texfile=~s/\.tex//;
                    275: 	$new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
                    276: 	push @texfile,$new_texfile;
                    277:     } 
                    278: }
1.39      sakharuk  279: 
1.135     foxr      280: #--------------------------------------------------------------------------------------------
1.43      sakharuk  281: 
1.135     foxr      282: my $ind=-1;
1.98      albertel  283: 
1.49      albertel  284: my %prog_state;
1.135     foxr      285: if ($advanced_role) { 
1.136     bisitz    286:     %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status',&mt('Class Print Status'),$number_of_files,'inline','80'); 
1.135     foxr      287: }
1.61      albertel  288: print "<br />";
1.135     foxr      289: my $num_files = @texfile;	# How does this differ from $number_of_files , can that be 0?
                    290: 
                    291: 
                    292: 
                    293: 
1.43      sakharuk  294: foreach $texfile (@texfile) {
1.49      albertel  295:   my $status_statement='';
                    296:   my $link_text='download PDF';
                    297:   $ind++;
1.135     foxr      298: 
                    299:   #---------------------------------------------------------------------------------------
                    300:   #  This chunk of code 
                    301:   #  determines the status message for the printout, and the download link text.
                    302:   #  If the print is for one or more students, both will contain the range of students
                    303:   #  covered by this file.
                    304:   #  
                    305: 
1.49      albertel  306:   my @stud_info=split(/_END_/,$names_pack[$ind]);
1.135     foxr      307:   my @tempo_array=split(/:/,$stud_info[0]);       # username:domain:section:full name:...
1.49      albertel  308:   my $name;
1.88      foxr      309:   my $name_range='';
1.135     foxr      310: 
                    311:   # $name       -> Either user's full name or username@domain
                    312:   # $name_range -> Either user's last name or usrname.
                    313: 
1.49      albertel  314:   if ($tempo_array[3]) {
                    315:       $name=$tempo_array[3];
1.89      foxr      316:       ($name_range) = split(/,/,$name, 2);
1.49      albertel  317:   } else {
                    318:       $name=$tempo_array[0].'@'.$tempo_array[1];
1.88      foxr      319:       $name_range = $tempo_array[0];
                    320:   }
1.135     foxr      321: 
                    322:   # If there truly is a name add it to the status text so we know which
                    323:   # user is getting printed.
                    324:   #
                    325: 
1.88      foxr      326:   if (($name ne "") && ($name ne '@') ) { # Could be printing codes...
                    327:       $link_text='<b>'.$name.'</b>';
                    328:       $status_statement.=$name;
1.49      albertel  329:   }
1.135     foxr      330: 
                    331:   # Group of students being printed...
                    332:   # $name_range -> first student's name - last student's name
                    333:   #
                    334: 
1.49      albertel  335:   if ($#stud_info>0) {
                    336:       @tempo_array=split(/:/,$stud_info[-1]);
1.48      albertel  337:       if ($tempo_array[3]) {
                    338: 	  $name=$tempo_array[3];
1.89      foxr      339: 	  my ($lastname) = split(/,/, $name,2);
                    340: 	  $name_range .= "-".$lastname;
1.48      albertel  341:       } else {
                    342: 	  $name=$tempo_array[0].'@'.$tempo_array[1];
1.88      foxr      343: 	  $name_range .= '-'.$tempo_array[0];
                    344:       }
                    345:       if (($name ne "") && ($name ne '@')) {
                    346: 	  $link_text.=' - <b>'.$name.'</b>';
                    347: 	  $status_statement.=' -  '.$name;
                    348:   
1.48      albertel  349:       }
1.88      foxr      350:   }
1.135     foxr      351: 
                    352:   # $name_range is the range of names in this file.
                    353:   # $name is the first of the names in this file.
                    354:   #
                    355:   #-----------------------------------------------------------------------
                    356: 
                    357:   #  If the number of files is > 1, but we don't have multiple
                    358:   #  student names, we must be printing an exam from codes.
                    359:   #  The download link becomes the filename (basename.tex
                    360:   #  The status info has the basename appended to it.
                    361:   #
                    362:   if(($num_files > 1) && ($link_text eq 'download PDF')) {
1.88      foxr      363:       $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
                    364:       $status_statement .= basename($texfile);
                    365:   }
1.135     foxr      366: 
                    367: 
                    368:   #------------------------------------------------------------------------
                    369: 
1.88      foxr      370:   $name_range =~ s/'//g;	# O'Neil -> ONeil e.g.
1.135     foxr      371: 
                    372: 
1.88      foxr      373:   print "<br/>";
1.135     foxr      374:   if ($advanced_role) { 
                    375:       &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); 
                    376:   }
                    377: 
                    378:   if (-e $texfile) {		# Ensure the tex file exists:
                    379: 
                    380:       #---------------------------------------------------------------------
                    381:       #
                    382:       #  Put username ranges into the original tex
                    383:       #  Tex filename from which they'll propagate into the other filenames as well.
                    384:       #
                    385: 
1.88      foxr      386:       if (($name_range ne '') && ($num_files > 1)) {
                    387: 	  my $newtexfile = $texfile;
                    388: 	  $newtexfile    =~ s/\.tex/$name_range\.tex/;
                    389: 	  rename($texfile, $newtexfile);
                    390: 	  $texfile       = $newtexfile;
                    391:       }
1.135     foxr      392: 
                    393:       #---------------------------------------------------------------------
                    394: 
1.29      sakharuk  395:       $texfile =~ m/^(.*)\/([^\/]+)$/; 
                    396:       my $name_file = $2;
                    397:       my $path_file = $1.'/';
                    398:       chdir $path_file;
1.132     www       399:       my $dvi_file= $name_file; $dvi_file =~ s/\.tex$/\.dvi/;
1.135     foxr      400:       &make_dvi_file($name_file,
                    401: 		     $dvi_file,
                    402: 		     $tableofcontents,
                    403: 		     $tableofindex,
                    404: 		     $status_statement,
                    405: 		     \%prog_state,
                    406: 		     $busy_wait_timeout);
1.90      foxr      407: 
                    408: 
1.135     foxr      409:       #Do we have a latex error in the log file?
1.35      sakharuk  410: 
1.105     foxr      411: 
1.135     foxr      412:       my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
1.115     foxr      413: 
1.63      sakharuk  414: 
1.135     foxr      415:       if (&analyze_logfile($logfilename, $texfile, $advanced_role)) {
                    416: 	  
1.119     foxr      417: 
1.29      sakharuk  418: 	  #LaTeX successfully parsed tex file 
                    419: 	  $name_file =~ s/\.tex/\.dvi/;
                    420: 	  my $new_name_file = $name_file;
                    421: 	  $new_name_file =~ s/\.dvi/\.ps/;
1.67      sakharuk  422: 	  my $papera=$paper;
1.62      sakharuk  423: 	  if ($papera eq 'letter') {$papera='';}
                    424: 	  if ($papera ne '') {$papera='-t'.$papera;}
1.139     foxr      425: 	  my $extra_ps_header = $perlvar{'lonLib'} .'/includepsheader.ps';
                    426: 	  my $comma = "dvips $papera -h $extra_ps_header -Ppdf -G0 -o  $new_name_file";
1.59      albertel  427: 	  &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
                    428: 			     "for $status_statement now Converting to PS",
                    429: 			     \%prog_state,$new_name_file);
1.115     foxr      430: 	  #
                    431: 	  #  One last little hinky kinky thing.
                    432: 	  #  It's just possible that some fonts could not be maded
                    433: 	  #  at the resolution of the pdf print driver.
                    434: 	  #  In that case a file called missfont.log will have been
                    435: 	  #  created that will contain the commands that were attempted
                    436: 	  # to create the missing fonts.  If we basically
                    437: 	  # take all the 8000 strings in that file, and
                    438: 	  # replace them with 600 (the ljfour resolution)
                    439: 	  # run the commands in that file and redvips,
                    440: 	  # we'll be able to print the missing glyphs at 600dpi.
                    441: 	  #
                    442: 	  # Supposedly it is possible to tune TeX/Metafont to do this
                    443: 	  # right but I failed to get that to work when following the
                    444: 	  # docs at the tug site, hence this rather kludgey fix.
                    445: 	  #
1.135     foxr      446: 
1.115     foxr      447: 	  my $print_directory = dirname($name_file);
                    448: 	  my $missfonts_file  = $print_directory."/missfont.log";
1.116     albertel  449: 	  #print("<br /> Missing fonts file is: $missfonts_file");
1.115     foxr      450: 	  if (-e $missfonts_file) {
1.116     albertel  451: 	      #print("<br />Missing fonts file exists\n");
1.124     albertel  452: 	      &create_missing_fonts($missfonts_file,\%prog_state);
1.118     albertel  453: 	      &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
1.115     foxr      454: 				 "for $status_statement dvips generated missing fonts",
                    455: 				 \%prog_state, $new_name_file);
                    456: 	  }
1.29      sakharuk  457: 	  if (-e $new_name_file) {
1.102     foxr      458: 	      my $latex_file = $name_file;
                    459: 	      $latex_file =~ s/\.dvi/\.tex/;
                    460: 	      &repaginate($new_name_file, $latex_file,  $numberofcolumns);
1.135     foxr      461: 
                    462: 	      &make_dvi_file($latex_file,
                    463: 			     $name_file,
                    464: 			     $tableofcontents,
                    465: 			     $tableofindex,
                    466: 			     $status_statement,
                    467: 			     \%prog_state,
                    468: 			     $busy_wait_timeout);
                    469: 
                    470: 
1.102     foxr      471: 	      &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
                    472: 				 "for $status_statement dvips to repaginate",
                    473: 				 \%prog_state, $new_name_file);
1.115     foxr      474: 
1.61      albertel  475: 	      print "<br />";
1.29      sakharuk  476: 	      $new_name_file =~ m/^(.*)\./;
1.59      albertel  477: 	      my $ps_file = my $tempo_file = $1.'temporar.ps';
                    478: 	      my $pdf_file = $1.'.pdf';
1.82      albertel  479: 	      $papera=~s/t/p/;
1.29      sakharuk  480: 	      if ($laystyle eq 'album' and $numberofcolumns eq '2') {
1.141     foxr      481: 		  $comma = "fixps --force ".$new_name_file." | psnup $papera -2 -s1.0 ";
                    482: 		  &debug("PSNUP command: $comma");
                    483: 		  &busy_wait_command("$comma 1>$tempo_file  2>/dev/null",
1.59      albertel  484: 				     "for $status_statement now Modifying PS layout",
                    485: 				     \%prog_state,$tempo_file);
1.29      sakharuk  486: 	      } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
1.141     foxr      487: 		  $comma = 'fixps --force '.$new_name_file.' | pstops '.$papera.' "2:0+1(0.48w,0)"';
                    488: 		  &debug("PSTOPS command: $comma ");
                    489: 
                    490: 		  &busy_wait_command("$comma 1>$tempo_file  2>/dev/null",
1.59      albertel  491: 				     "for $status_statement now Modifying PS layout",
                    492: 				     \%prog_state,$tempo_file); 
1.29      sakharuk  493: 	      } else {
1.59      albertel  494: 		  $ps_file=$new_name_file;
                    495: 	      }
1.67      sakharuk  496: 	      my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
                    497:                                'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
                    498:                                'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
                    499:                                'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
                    500:                                'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
                    501:                                'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
                    502:                                'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
                    503:                                'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
                    504: 			   };
                    505: 	      if ($paper ne 'letter') {
1.69      matthew   506: 		  open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n";
1.63      sakharuk  507: 		  my $new_ps_file='new'.$ps_file;
1.69      matthew   508: 		  open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n";
1.67      sakharuk  509: 		  print FFHS $addtoPSfile->{$paper}."\n";
1.63      sakharuk  510: 		  while (<FFH>) {
                    511: 		      print FFHS $_;
                    512: 		  }
1.62      sakharuk  513: 		  close(FFH);
1.63      sakharuk  514: 		  close(FFHS);
                    515: 		  $ps_file=$new_ps_file;	  
1.62      sakharuk  516: 	      }
1.141     foxr      517: 	      &busy_wait_command("ps2pdf13 $ps_file $pdf_file 1>/dev/null 2>/dev/null",
1.59      albertel  518: 				 "for $status_statement now Converting PS to PDF",
                    519: 				 \%prog_state,$pdf_file);
                    520: 	    
1.29      sakharuk  521: 	      my $texlog = $texfile;
                    522: 	      my $texaux = $texfile;
                    523: 	      my $texdvi = $texfile;
                    524: 	      my $texps = $texfile;
                    525: 	      $texlog =~ s/\.tex/\.log/;
                    526: 	      $texaux =~ s/\.tex/\.aux/;
                    527: 	      $texdvi =~ s/\.tex/\.dvi/;
                    528: 	      $texps =~ s/\.tex/\.ps/;
                    529: 	      my @garb = ($texlog,$texaux,$texdvi,$texps);
1.22      sakharuk  530: #	  unlink @garb;
1.120     albertel  531: 	      unlink($duefile);
1.68      sakharuk  532: 	      print "<a href=\"/prtspool/$pdf_file\">$link_text - click here to download pdf</a>";
1.29      sakharuk  533: 	      print "\n";
                    534: 	  }
1.120     albertel  535: 	  unlink($missfonts_file);
1.119     foxr      536: 
1.63      sakharuk  537:       }  
1.29      sakharuk  538:   } else {
                    539:       print "LaTeX file $texfile was not created successfully";
1.14      sakharuk  540:   }
1.43      sakharuk  541: }
1.45      sakharuk  542: print "<br />";
1.44      sakharuk  543: if ($number_of_files>1) {
1.45      sakharuk  544:     my $zipfile=$texfile[0];
                    545:     $zipfile=~s/\.tex/\.zip/;
                    546:     my $statement="zip $zipfile";
1.44      sakharuk  547:     foreach my $file (@texfile) {
1.45      sakharuk  548: 	$file=~s/\.tex/.\pdf/;
                    549: 	$statement.=' '.$file; 
1.44      sakharuk  550:     }
1.49      albertel  551:     print("<pre>Zip Output:\n");
                    552:     system($statement);
                    553:     print("</pre>");
1.123     albertel  554:     $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1.49      albertel  555:     print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";
1.44      sakharuk  556: }
1.92      albertel  557: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
1.97      albertel  558: print(&Apache::loncommon::end_page());
1.59      albertel  559: my $done;
1.102     foxr      560: 
1.59      albertel  561: sub REAPER {
                    562:     $done=1;
                    563: }
1.129     foxr      564: #
                    565: #  Execute a command updating the status window as the command's
                    566: #  output file builds up (at intervals of a second).
                    567: #
                    568: #   If the timeout argument defined, then if that many seconds
                    569: #   elapses without an increase in the size of the output file,
                    570: #   the command will be killed (this deals with the case when
                    571: #   latex crawls into an infinite loop).
                    572: #
1.59      albertel  573: sub busy_wait_command {
1.129     foxr      574:     my ($command,$message,$progress_win,$output_file, $timeout)=@_;
1.59      albertel  575:     
                    576:     $SIG{CHLD} = \&REAPER;
                    577:     $done=0;
                    578:     my $pid=open(CMD,"$command |");
1.92      albertel  579:     if ($advanced_role) {
1.60      albertel  580: 	&Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
                    581:     }
1.129     foxr      582:     my $last_size      = 0;
                    583:     my $unchanged_time = 0;
1.59      albertel  584:     while(!$done) {
                    585: 	sleep 1;
                    586: 	my $extra_msg;
                    587: 	if ($output_file) {
                    588: 	    my $size=(stat($output_file))[7];
                    589: 	    $extra_msg=", $size bytes generated";
1.129     foxr      590: 	    if ($size == $last_size) {
                    591: 		$unchanged_time++;
                    592: 		if ($timeout && ($unchanged_time > $timeout)) {
1.132     www       593: 		    print "<h1>Operation timed out!</h1>\n";
1.131     www       594: 		    print "<p>Executing $command, the output file $output_file did not grow\n";
1.130     foxr      595: 		    print "after $timeout seconds.  This <em>may</em> indicate $command\n";
1.131     www       596: 		    print "is in an infinite loop.\n";
                    597: 		    print "See if printing fewer copies helps.  Please contact LON-CAPA\n";
                    598: 		    print "support about this in any event.";
1.130     foxr      599: 		    print "</p>";
1.129     foxr      600: 		    kill(9, $pid); # Reaper will do the rest...I hope there's errors in the log.
                    601: 		}
                    602: 	    } else {
                    603: 		$last_size      = $size;
                    604: 		$unchanged_time = 0;
                    605: 	    }
1.59      albertel  606: 	}
1.92      albertel  607: 	if ($advanced_role) {
1.60      albertel  608: 	    &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,
                    609: 						  $message.$extra_msg);
                    610: 	}
1.59      albertel  611:     }
                    612:     $SIG{CHLD}='IGNORE';
                    613:     close(CMD);
                    614: }
1.1       sakharuk  615: 
1.135     foxr      616: # Make the dvi file (or rather try to), from the latex file and the
                    617: # various bits and pieces that control how the latex file is processed:
                    618: # LaTeX is run as many times a needed to make this all happen... this may
                    619: # result in several runs of LaTeX that just are errors if the LaTeX is
1.136     bisitz    620: # bad, but the printing subsystem is _supposed_ to not do that.
1.135     foxr      621: #
                    622: # Parameters:
                    623: #   name_file        - Name of the LaTeX file to process.
                    624: #   dvi_file         - Name of resulting dvi file.
                    625: #   tableofcontents  - "yes" if we are supposed to make a table of contents.
                    626: #   tableofindex     - "yes" if we are suposed to make an index.
                    627: #   status_statement - Part of the status statement for ths status window.
                    628: #   prog_state       - Reference to the program state hash.
                    629: #   busy_wait_timeout- Seconds without any progress that imply a problem.
                    630: #
                    631: #
                    632: sub make_dvi_file {
                    633:     my ($name_file,
                    634: 	$dvi_file,
                    635: 	$tableofcontents,
                    636: 	$tableofindex,
                    637: 	$status_statement,
                    638: 	$prog_state,
                    639: 	$busy_wait_timeout) = @_;
                    640:     
                    641:     
                    642:     &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
                    643: 		       "for $status_statement now LaTeXing file",
                    644: 		       $prog_state,$dvi_file, $busy_wait_timeout);
                    645: 
                    646:     # If the tableof contents was requested, we need to run 
                    647:     # LaTex a couple more times to get all the references sorted out.
                    648: 
                    649:     if ($tableofcontents eq 'yes') {
                    650: 	&busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
                    651: 			   "for $status_statement First LaTeX of file for table of contents",
                    652: 			   $prog_state,$dvi_file, $busy_wait_timeout);
                    653: 	&busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
                    654: 			   "for $status_statement Second LaTeX of file for table of contents",
                    655: 			   $prog_state,$dvi_file,$busy_wait_timeout);
                    656:     } 
                    657: 
                    658:     # And makeindex and another run of LaTeX to incorporate it if the index
                    659:     # is enabled.
                    660: 
                    661: 
                    662:     if ($tableofindex eq 'yes') {
                    663: 	my $idxname=$name_file;
                    664: 	$idxname=~s/\.tex$/\.idx/;
                    665: 	&busy_wait_command("makeindex $idxname",
                    666: 			   "making index file",
                    667: 			   $prog_state,$idxname);
                    668: 	&busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
                    669: 			   "for $status_statement now LaTeXing file for index section",
                    670: 			   $prog_state,$dvi_file, $busy_wait_timeout);
                    671:     } 
                    672:     
                    673: }    
                    674: 
                    675: 
1.102     foxr      676: #  Repagninate
1.99      foxr      677: #  What we need to do:
                    678: #   - Count the number of pages in each student.
1.102     foxr      679: #   - Rewrite the latex file replacing the \specials that
                    680: #     mark the end of student with an appropriate number of newlines.
                    681: #   parameters:
                    682: #     psfile     - Postscript filename
                    683: #     latexfile  - LaTeX filename
                    684: #     columns    - number of columns.
                    685: sub repaginate {
1.100     foxr      686: 
                    687:     # We will try to do this in 2 passes through the postscript since
                    688:     # the postscript is potentially large, to do 2 passes, the first pass
                    689:     # must be able to calculate the total number of document pages so that
                    690:     # at the beginning of the second pass we already know how to replace
                    691:     #  %%Pages:
                    692: 
                    693:     #  Figure out
                    694:     #    1. Number of pages in the document
                    695:     #    2. Maximum number of pages in a student
                    696:     #    3. Number of pages in each student.
1.99      foxr      697: 
1.102     foxr      698:     my ($postscript_filename, $latex_filename, $num_columns) = @_;
1.99      foxr      699:     open(PSFILE, "<$postscript_filename");
1.100     foxr      700:     my $line;
                    701:     my $total_pages;		# Total pages in document.
                    702:     my $seen_pages        = 0;	# There are several %%Pages only the first is useful
                    703:     my @pages_in_student;	# For each student his/her initial page count.
                    704:     my $max_pages = 0;		# Pages in 'longest' student.
1.102     foxr      705:     my $page_number = 0;
1.104     foxr      706:     &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state, 
1.110     albertel  707: 					  &mt("Counting pages for student: [_1]",1));
1.104     foxr      708: 
1.100     foxr      709:     while ($line = <PSFILE>) {
                    710: 	
                    711: 	# Check for total pages (%%Pages:)
                    712: 
1.101     albertel  713: 	if (($line =~ /^%%Pages:/) && (!$seen_pages)) {
1.100     foxr      714: 	    my @pageinfo = split(/ /,$line);
                    715: 	    $total_pages = $pageinfo[1];
                    716: 	    $seen_pages  = 1;
                    717: 	}
                    718: 	#  Check for %%Page: n m  $page_number will be the
                    719: 	#  biggest of these until we see an endofstudent.
                    720: 	#  Note that minipages generate spurious %Page: 1 1's so
                    721: 	#  we only are looking for the largest n (n is page number at the
                    722: 	#  bottom of the page, m the page number within the document.
                    723: 	#
1.102     foxr      724: 
1.127     albertel  725: 	if ($line =~ /^%%Page:\s+\d+\s+\d+/) {
1.120     albertel  726: 	    my @pageinfo = split(/\s+/, $line);
1.100     foxr      727: 	    if ($page_number < $pageinfo[1]) {
                    728: 		$page_number = $pageinfo[1];
1.110     albertel  729: 	    } elsif ($pageinfo[2] ne 1) {
                    730: 		#  current page count reset, and it's not because of a 
                    731: 		#    minipage 
                    732: 		# - save the page_number, reset and, if necessary
                    733: 		#    update max_pages.
                    734: 		push(@pages_in_student, $page_number);
                    735: 		&Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state, 
                    736: 						      &mt("Counting pages for student: [_1]", scalar(@pages_in_student)));
                    737: 		if ($page_number > $max_pages) {
                    738: 		    $max_pages = $page_number;
                    739: 		}
                    740: 		$page_number = $pageinfo[1];
1.100     foxr      741: 	    }
                    742: 	}
                    743: 
                    744: 	
                    745:     }
1.110     albertel  746:     # file ended so one more student
                    747:     push(@pages_in_student, $page_number);
                    748:     &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state, 
                    749: 					  &mt("Counting pages for student: [_1]",scalar(@pages_in_student)));
                    750:     if ($page_number > $max_pages) {
                    751: 	$max_pages = $page_number;
                    752:     }
                    753:     $page_number = 0;
                    754:     
1.99      foxr      755:     close(PSFILE);
1.102     foxr      756: 
                    757:     #  If 2 columns, max_pages must go to an even number of columns:
1.103     foxr      758: 
1.102     foxr      759:    
                    760:     if ($num_columns == 2) {
                    761: 	if ($max_pages % 2) {
                    762: 	    $max_pages++;
                    763: 	}
                    764:     }
1.100     foxr      765:     
1.102     foxr      766:     #  Now rewrite the LaTex file, substituting our \special
                    767:     #  with an appropriate number of \newpage directives.
                    768: 
                    769:     my $outfilename = $latex_filename."temp";
                    770: 
                    771:     open(LATEXIN, "<$latex_filename");
                    772:     open(LATEXOUT, ">$outfilename");
                    773: 
                    774: 
1.110     albertel  775:     my $student_number    = 0;	# Index of student we're working on.
1.104     foxr      776:     &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state, 
                    777: 					  "Repaginating student ".$student_number+1);
1.102     foxr      778: 
                    779:     while (my $line = <LATEXIN>) {
                    780: 	if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {
                    781: 	    # only end of student stamp if next line is ENDOFSTUDENTSTAMP:
                    782: 
                    783: 
                    784: 	    # End of student replace with 0 or more newpages.
                    785: 	    
                    786: 	    my $addlines = $max_pages - $pages_in_student[$student_number];
                    787: 	    while($addlines)  {
1.108     albertel  788: 		print LATEXOUT '\clearpage \strut \clearpage';
1.105     foxr      789: 
1.102     foxr      790: 		$addlines--;
1.100     foxr      791: 	    }
1.102     foxr      792: 	    
1.100     foxr      793: 	    $student_number++;
1.104     foxr      794: 	    &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state, 
                    795: 						  "Repaginating student ".$student_number+1);
1.102     foxr      796: 	    
                    797: 	} else {
                    798: 	    print LATEXOUT $line;
1.100     foxr      799: 	}
                    800:     }
                    801: 
1.102     foxr      802:     close(LATEXIN);
                    803:     close(LATEXOUT);
1.108     albertel  804:     rename($outfilename, $latex_filename);
1.100     foxr      805: 
1.99      foxr      806: }
1.4       sakharuk  807: 
1.115     foxr      808: #
                    809: #   Create missing fonts given a latex missfonts.log file.
                    810: #   This file will have lines like:
                    811: #
                    812: #   mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 tcrm0500
                    813: #
                    814: #  We want to execute those lines with the 8000's changed to 600's
                    815: #  in order to match the resolution of the ljfour printer.
                    816: #  Of course if some wiseguy has changed the default printer from ljfour
                    817: #  in the dvips's config.ps file that will break so we'll also
                    818: #  ensure that --mfmode is ljfour.
                    819: #
                    820: sub create_missing_fonts {
                    821:     my ($fontfile, $state) = @_;
                    822: 
                    823:     # Open and read in the font file..we'll read it into the array
                    824:     #  font_commands.
                    825:     #
1.118     albertel  826:     open(my $font_handle, $fontfile);
1.115     foxr      827:     my @font_commands = <$font_handle>;
1.118     albertel  828: 
                    829:     # make the list contain each command only once
                    830:     my %uniq;
                    831:     @font_commands = map { $uniq{$_}++ == 0 ? $_ : () } @font_commands;
1.115     foxr      832: 
                    833:     #  Now process each command replacing the appropriate 8000's with
                    834:     #  600's ensuring that font names with 8000's in them are not corrupted.
                    835:     #  and if the --mfmode is not ljfour we turn it into ljfour.
                    836:     #   Then we execute the command.
                    837:     #
1.118     albertel  838:     
1.115     foxr      839:     foreach my $command (@font_commands) {
1.116     albertel  840: 	#print("<br />Raw command: $command");
1.115     foxr      841: 	$command =~ s/ 8000/ 600/g;    # dpi directives.
                    842: 	$command =~ s/\/8000/\/600/g;  # mag directives.
1.116     albertel  843: 	#print("<br />After dpi replacements: $command");
1.115     foxr      844: 
                    845: 	my @cmdarray = split(/ /,$command);
                    846: 	for (my $i =0; $i < scalar(@cmdarray); $i++) {
                    847: 	    if ($cmdarray[$i] eq '--mfmode') {
                    848: 		$cmdarray[$i+1] = "ljfour";
                    849: 	    }
                    850: 	}
1.116     albertel  851: 	#print("<br /> before reassembly : (@cmdarray)");
1.115     foxr      852: 	$command = join(" ", (@cmdarray));
                    853: 
1.116     albertel  854: 	#print("<br />Creating fonts via command: $command");
1.118     albertel  855: 	&busy_wait_command("$command 1>/dev/null 2>/dev/null",
1.115     foxr      856: 			   "Creating missing font",
1.124     albertel  857: 			   $state);
1.115     foxr      858: 			   
                    859:     }
                    860: 
                    861: }
1.133     foxr      862: #
                    863: #  Convert a figure file to encapsulated postscript:
                    864: #  At present, this is using a lot of file scoped globals to pass data around. 
                    865: # Parameters:
                    866: #    not_eps  - The name of the file to convert which, presumably, is not
                    867: #               already an eps file.
                    868: #
                    869: sub convert_figure {
                    870:     my ($not_eps) = @_;
1.141     foxr      871:     &debug("in convert_figure");
1.133     foxr      872: 
                    873:     my $status_statement='EPS picture for '.$not_eps;
                    874:     my $eps_f = $not_eps;
1.134     foxr      875: 
1.133     foxr      876:     if ($eps_f=~/\/home\/([^\/]+)\/public_html\//) {
                    877: 	$eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;
                    878:     } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) {
1.134     foxr      879: 	$eps_f=~ s/$perlvar{'lonDocRoot'}\/res\/(.+)/$1/;
1.133     foxr      880:     } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) {
1.134     foxr      881: 	$eps_f=~ s/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/$1\/$2/;
1.133     foxr      882:     }
1.134     foxr      883: 
                    884:     $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
                    885: 
                    886:     # Spaces are problematic for system commands and LaTeX, replace with _
                    887: 
                    888:     $eps_f  =~ s/ /\_/g; 
                    889: 
1.133     foxr      890:     # 
1.134     foxr      891:     # If the file is already an .eps or .ps file (eps_f still has the original
                    892:     # file type),
1.133     foxr      893:     # We really just need to copy it from where it was to prtspool
                    894:     # but with the spaces substituted to _'s.
                    895:     #
1.134     foxr      896:     my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);
1.133     foxr      897:     if ($sext =~/ps$/i) {
                    898: 	&File::Path::mkpath($path,0,0777);
                    899: 	copy("$not_eps", "$eps_f"); 
                    900:     } else {
                    901: 	
                    902: 	$eps_f .= '.eps';	# Just append the eps ext.
1.134     foxr      903: 	my $path= &dirname($eps_f);
1.133     foxr      904: 	&File::Path::mkpath($path,0,0777);
                    905: 	$not_eps =~ s/^\s+//;
                    906: 	$not_eps =~ s/\s+$//;
                    907: 	$not_eps =~ s/ /\\ /g;
                    908: 	if ($advanced_role) {
                    909: 	    my $prettyname=$not_eps;
                    910: 	    $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;
                    911: 	    $prettyname=~s|$perlvar{'lonDocRoot'}/|/|;
                    912: 	    &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
                    913: 						  'Converting to EPS '.$prettyname);
                    914: 	}
1.141     foxr      915: 	#
                    916: 	#  If the file is a PDF, need to use pdftops to convert it to a ps file.
                    917: 	#  otherwise use imagemagik:
                    918: 	#
                    919: 	if($not_eps =~/\.(pdf|PDF)$/) {
                    920: 
                    921: 	    #
                    922: 	    # For whatever reason, pure postscript conversions have to be
                    923: 	    # in the same dir as the base file:
                    924: 	    #
                    925: 	    $eps_f = &basename($eps_f);
                    926: 	    $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
                    927: 
                    928: 	    &debug("Converting pdf $not_eps to postscript: $eps_f");
                    929: 	    system("pdftops $not_eps $eps_f");
                    930: 	} else {
                    931: 	    system("convert $not_eps $eps_f");
                    932: 	}
1.134     foxr      933: 
1.133     foxr      934: 	if (not -e $eps_f) {
                    935: 	    # converting an animated gif creates either:
                    936: 	    # anim.gif.eps.0
                    937: 	    # or
                    938: 	    # anim.gif-0.eps
                    939: 	    for (my $i=0;$i<10000;$i++) {
                    940: 		if (-e $eps_f.'.'.$i) {
                    941: 		    rename($eps_f.'.'.$i, $eps_f);
                    942: 		    last;
                    943: 		}
                    944: 		my $anim_eps = $eps_f;
                    945: 		$anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
                    946: 		if (-e $anim_eps) {
                    947: 		    rename($anim_eps, $eps_f);
                    948: 		    last;
                    949: 		}
                    950: 	    }
                    951: 	}
                    952: 	
                    953: 	# imagemagick 6.2.0-6.2.7 fails to properly handle
                    954: 	# convert anim.gif anim.gif.eps
                    955: 	# it creates anim.eps instead. 
                    956: 	if (not -e $eps_f) {
                    957: 	    my $eps_f2 = $eps_f;
                    958: 	    $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
                    959: 	    if(-e $eps_f2) {
                    960: 		rename($eps_f2,$eps_f);
                    961: 	    }
                    962: 	}
                    963:     }
                    964:     
                    965: }
1.135     foxr      966: #
                    967: #   Analyze a LaTeX logfile producing appropriate  output on error and 
                    968: #   returning a boolean to let the caller know if, in our opinion, it's
                    969: #   worth continuing on to produce the PDF file.
                    970: #
                    971: # Parameters:
                    972: #   logfilename   - Name of the logfile.
                    973: #   texfile       - Name of the LaTeX file that was being processed.
                    974: #   advanced_role - True if the user is privileged with respect to the printout
                    975: #                   (e.g. is the course coordinator or some such thing).
                    976: # Returns:
                    977: #    1            - Caller is advised to continue to create the PDF.
                    978: #    0            - Caller need not bother creating the PDF.
                    979: # Side Effects:
                    980: #   Messages are printed to describe any errors that have been encountered.
                    981: # NOTE:
                    982: #    The current policy is to assume that if LaTeX decided to insert some text
                    983: #    it has salvaged the resource and the resource can be printed.. in that case
                    984: #    a message is emitted from this sub.
                    985: #
                    986: sub analyze_logfile {
                    987:     my ($logfilename, $texfile, $advanced_role) = @_;
                    988: 
                    989:     my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
                    990:     my @content_of_file = <$temporary_file>;
                    991:     close $temporary_file; 
                    992:     my $body_log_file = join(' ',@content_of_file);
                    993:     $logfilename =~ s/\.log$/\.html/;
                    994:     $temporary_file = IO::File->new('>'.$logfilename); 
                    995:     print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
                    996:     if ($body_log_file=~m/!\s+Emergency stop/) {
                    997: 	my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
                    998: 	my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
                    999: 	my $badresource;
                   1000: 	my $badtext;
                   1001: 	if ($whereitbegins!=-1 and $whereitends!=-1) {
                   1002: 	    $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
                   1003: 	    $whereitbegins  = rindex $badtext,'located in';
                   1004: 	    if ($whereitbegins != -1) {
                   1005: 		
                   1006: 		$badresource = substr($badtext, $whereitbegins+27, 
                   1007: 				      length($badtext) - $whereitbegins - 48);
                   1008: 		# print "<br />failing resourcename: $badresource<br />";
                   1009: 	    }
1.136     bisitz   1010:         }
1.135     foxr     1011: 
                   1012: 	# Guys with privileged roles get a more detailed error output:
                   1013: 
                   1014: 	if ($advanced_role) {  
                   1015: 	    #LaTeX failed to parse tex file 
1.138     biermanm 1016: 	    print "<h2>".&mt('LaTeX could not successfully parse your TeX file.')."</h2>";
1.136     bisitz   1017: 	    print &mt('It probably has errors in it.')."<br />";
                   1018: 	    if ($badtext) {
                   1019:                 print &mt('With very high probability this error occured in [_1].',$badtext)
                   1020:                      ."<br /><br />";
                   1021:             }
                   1022: 	    print &mt('Here are the error messages in the LaTeX log file:')
                   1023:                  ."<br /><pre>";
1.135     foxr     1024: 	    
                   1025: 	    my $sygnal = 0;
                   1026: 	    for (my $i=0;$i<=$#content_of_file;$i++) {
                   1027: 		if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
                   1028: 		    $sygnal = 1;
                   1029: 		} 
                   1030: 		if ($content_of_file[$i]=~m/Here is how much of/) {
                   1031: 		    $sygnal = 0;
                   1032: 		} 
                   1033: 		if ($sygnal) {
                   1034: 		    print "$content_of_file[$i]";
                   1035: 		}  
                   1036: 	    }
                   1037: 	    print "</pre>\n";
                   1038: 	    # print "<br /> Advanced role <br />";
                   1039: 	    $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1.136     bisitz   1040: 	    print "<b><big>"
                   1041:                  .&mt('The link to [_1]Your log file[_2]','<a href="'.$logfilename.'">','</a>')
                   1042: 	         ."</big></b>\n";
1.135     foxr     1043: 	    #link to original LaTeX file
                   1044: 	    my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
                   1045: 	    my @tex_content_of_file = <$tex_temporary_file>;
                   1046: 	    close $tex_temporary_file; 
                   1047: 	    my $body_tex_file = join(' ',@tex_content_of_file);
                   1048: 	    $texfile =~ s/\.tex$/aaaaa\.html/;
                   1049: 	    $tex_temporary_file = IO::File->new('>'.$texfile); 
                   1050: 	    print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
                   1051: 	    print "<br /><br />";
                   1052: 	    $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1.136     bisitz   1053: 	    print "<b><big>"
                   1054:                  .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>')
                   1055: 	         ."</big></b><br /><br />\n";
                   1056: 	    my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
1.135     foxr     1057: 	    print ("$help_text");
                   1058: 
                   1059: 	    # Students on the other hand get a minimal error message, since they won't
                   1060: 	    # be able to correct the error message. A message is sent to the 
                   1061: 	    # instructor:
                   1062: 
                   1063: 	} else {		# Student role...
                   1064: 	    #  at this point:
                   1065: 	    #    $body_log_file - contains the log file.
                   1066: 	    #    $name_file     - is the name of the LaTeX file.
                   1067: 	    #    $identifier    - is the unique LaTeX identifier.l
                   1068: 	    
1.142     bisitz   1069:             print '<p class="LC_error">';
1.136     bisitz   1070: 	    if ($badtext) {
                   1071:                 print &mt('There are errors in [_1].',$badtext);
                   1072:             } else {
                   1073:                 print &mt('There are errors.');
                   1074:             }
1.142     bisitz   1075:             print '</p>'
                   1076:                  .&mt('These errors prevent this resource from printing correctly.');
                   1077: 
1.135     foxr     1078: 	    my $tex_handle = IO::File->new($texfile);
                   1079: 	    my @tex_contents = <$tex_handle>;
                   1080: 	    &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
1.136     bisitz   1081: 	    print "<p>"
                   1082:                  .&mt('A message has been sent to the instructor describing this failure.')
                   1083:                  ."</p>";
                   1084: 	    my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
1.135     foxr     1085: 	    print  ("$help_text");
                   1086: 	    
                   1087: 	  }
                   1088: 
                   1089: 	# Either way, an emergency stop does not allow us to continue so:
                   1090: 
                   1091: 	return 0;
                   1092: 	
                   1093: 	# The branch of code below is taken if it appears that 
                   1094: 	# there was no emergency stop but LaTeX had to correct the
                   1095: 	# input file to run.
                   1096: 	# In that case we need to provide error feedback, as the correction >may< not be
                   1097: 	# sufficient, we can let the game continue as there's a dvi file to process.
                   1098: 
                   1099:     } elsif ($body_log_file=~m/<inserted text>/) {
                   1100: 	my $whereitbegins = index $body_log_file,'<inserted text>';
1.136     bisitz   1101: 	print &mt('You are running LaTeX in [_1]batch mode[_2].','<b>','</b>');
1.135     foxr     1102: 	while ($whereitbegins != -1) {
                   1103: 	    my $tempobegin=$whereitbegins;
                   1104: 	    $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
                   1105: 	    my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
1.136     bisitz   1106: 	    print "<br />"
                   1107:                  .&mt('It has found an error in [_1][_2]and corrected it.',substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26),"<br />")."\n";
                   1108: 	    print &mt('Usually this correction is valid but you probably need to check the indicated resource one more time and implement neccessary corrections by yourself.')."\n";
1.135     foxr     1109: 	    $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
                   1110: 	}
                   1111: 
                   1112: 	if ($advanced_role) {  
                   1113: 	    print "<br /><br />";
                   1114: 	    $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1.136     bisitz   1115: 	    print "<b><big>"
                   1116:                  .&mt('The link to [_1]Your log file[_2]'
1.137     raeburn  1117:                      ,'<a href="'.$logfilename.'">','</a>')
1.136     bisitz   1118: 	         ."</big></b>\n";
1.135     foxr     1119: 	    #link to original LaTeX file
                   1120: 	    my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
                   1121: 	    my @tex_content_of_file = <$tex_temporary_file>;
                   1122: 	    close $tex_temporary_file; 
                   1123: 	    my $body_tex_file = join(' ',@tex_content_of_file);
                   1124: 	    $texfile =~ s/\.tex$/aaaaa\.html/;
                   1125: 	    $tex_temporary_file = IO::File->new('>'.$texfile); 
                   1126: 	    print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
                   1127: 	    print "<br /><br />";
                   1128: 	    $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
1.136     bisitz   1129: 	    print "<b><big>"
                   1130:                   .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>');
                   1131: 	    print "</big></b>\n";
1.135     foxr     1132: 	}
                   1133: 	return 1;
                   1134:     }
                   1135:     return 1;			# NO log file issues at all.
                   1136: }

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