[BACK]Return to printout.pl CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / interface

Diff for /loncom/interface/printout.pl between versions 1.103 and 1.151

version 1.103, 2006/06/19 22:30:15 version 1.151, 2011/12/21 21:25:40
Line 1 Line 1
 #!/usr/bin/perl  #!/usr/bin/perl
 # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.  # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
 #  #
   # $Id$
 #  #
 # Copyright Michigan State University Board of Trustees  # Copyright Michigan State University Board of Trustees
 #  #
Line 29  use lib '/home/httpd/lib/perl'; Line 30  use lib '/home/httpd/lib/perl';
 use LONCAPA::loncgi;  use LONCAPA::loncgi;
 use File::Path;  use File::Path;
 use File::Basename;  use File::Basename;
   use File::Copy;
 use IO::File;  use IO::File;
 use Image::Magick;  use Image::Magick;
 use Apache::lonhtmlcommon();  use Apache::lonhtmlcommon();
Line 37  use Apache::loncommon(); Line 39  use Apache::loncommon();
 use Apache::lonlocal;  use Apache::lonlocal;
 use Apache::lonmsg();  use Apache::lonmsg();
 use LONCAPA::Enrollment;  use LONCAPA::Enrollment;
   use LONCAPA::Configuration;
   
 use strict;  use strict;
   
   my $busy_wait_timeout = 30; 
   my $pdfs_converted    = 0; # non zero if PDF includes (need to fixps).
   
   my $debugging = 0;
   
   sub debug {
       if ($debugging) {
    my ($text) = @_;
    print "$text <br />\n";
       }
   }
   
 #   Determine if a user is operating as a student for this course/domain.  #   Determine if a user is operating as a student for this course/domain.
 #Parameters:  #Parameters:
Line 109  sub send_error_mail { Line 123  sub send_error_mail {
   
  if (&is_student()) {   if (&is_student()) {
     # build the subject and message body:      # build the subject and message body:
     # print "sending message to course coordinators.<br />";      &debug("sending message to course coordinators.");
   
     # Todo: Convert badurl into a url from file path:      # Todo: Convert badurl into a url from file path:
   
Line 126  sub send_error_mail { Line 140  sub send_error_mail {
     foreach my $line (@$texfile) {      foreach my $line (@$texfile) {
  $message .= "$line\n";   $message .= "$line\n";
     }      }
     my (undef, %receivers) = &Apache::lonfeedback::decide_receiver(undef, 0,      my (undef, %receivers) = &Apache::lonmsg::decide_receiver(undef, 0,
   1,1,1);        1,1,1);
     # print "<br /> sending...section:  $env{'request.course.sec'}";      &debug("sending...section:  $env{'request.course.sec'}");
     foreach my $dest (keys %receivers) {      foreach my $dest (keys %receivers) {
  # print "<br /> dest is $dest";   &debug("dest is $dest");
  my @destinfo = split(/:/,$dest);   my @destinfo = split(/:/,$dest);
  my $user = $destinfo[0];   my $user = $destinfo[0];
  my $dom  = $destinfo[1];   my $dom  = $destinfo[1];
Line 157  Your cookie information is incorrect. Line 171  Your cookie information is incorrect.
 </body>  </body>
 </html>  </html>
 END  END
     return;      exit;
 }  }
  &Apache::lonlocal::get_language_handle();  
  &Apache::loncommon::content_type(undef,'text/html');  
   
   print(&Apache::loncommon::start_page('Creating PDF'));  my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
   &Apache::lonlocal::get_language_handle();
   &Apache::loncommon::content_type(undef,'text/html');
   $env{'request.noversionuri'} = '/cgi-bin/printout.pl';
   # Breadcrumbs
   #FIXME: Choose better/different breadcrumbs?!? Links?
   my $brcrum = [{'href' => '',
                  'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
                 {'href' => '',
                  'text' => 'Preparing Printout'},
                 {'href' => '',
                  'text' => 'Creating PDF'}];
   print(&Apache::loncommon::start_page('Creating PDF',
                                        undef,
                                        {'bread_crumbs' => $brcrum,}));
   
   my $identifier = $ENV{'QUERY_STRING'};
   my $texfile = $env{'cgi.'.$identifier.'.file'};
   my $laystyle = $env{'cgi.'.$identifier.'.layout'};
   my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
   my $paper = $env{'cgi.'.$identifier.'.paper'};
   my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
   my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
   my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
   my $advanced_role = $env{'cgi.'.$identifier.'.role'};
   my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
   my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
   my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'});
   
   
   my @names_pack=();
   if ($student_names=~/_END_/) {  
       @names_pack=split(/_ENDPERSON_/,$student_names);
   }
   if ($backref) {
       print('<p>'.&mt("[_1]Return[_2] to editing resource.",
       "<a href=\"$backref\"><b>","</b></a>").'</p>');
   }
   my $figfile = $texfile;
   $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/;
   my $duefile = $texfile;
   $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/;
   
   my $identifier = $ENV{'QUERY_STRING'};  
   my $texfile = $env{'cgi.'.$identifier.'.file'};  
   my $laystyle = $env{'cgi.'.$identifier.'.layout'};  
   my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};  
   my $paper = $env{'cgi.'.$identifier.'.paper'};  
   my $selectionmade = $env{'cgi.'.$identifier.'.selection'};  
   my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};  
   my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};  
   my $advanced_role = $env{'cgi.'.$identifier.'.role'};  
   my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;  
   my $student_names = $env{'cgi.'.$identifier.'.studentnames'};  
   my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'});  
   
     #-------------------------------------------------------------------------------------
   my @names_pack=();  #
   if ($student_names=~/_END_/) {    #   Each print may have associated with it a file that contains a set of figures
       @names_pack=split(/_ENDPERSON_/,$student_names);  #   that need to be converted to .eps from whatever form they were in when included
   }  #   in the resource.  The name of the figure file is in $figfile.  If it exists,
   #   it contains the names of the files that need to be converted, one per line.
   #
   
 print "<a href=\"$backref\"><b>Return</b></a> to last resource.<br /><br />";  &debug("Figure file is $figfile");
   
   my $figfile = $texfile;  if (-e $figfile) {
   $figfile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.dat/;      &debug( "Figure file exists");
   my $duefile = $texfile;      &debug("$figfile exists");
   $duefile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.due/;      my %done_conversion;
   #do we have figures?      my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
   # print "Figure file: $figfile\n";      my @content_of_file = <$temporary_file>;
   if (-e $figfile) {      close $temporary_file;  
       # print "$figfile exists\n";      my $noteps;
       my %done_conversion;      my %prog_state;
       my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";      if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$#content_of_file);  }
       my @content_of_file = <$temporary_file>;      print('<br />');
       close $temporary_file;        foreach my $not_eps (@content_of_file) {
       my $noteps;   chomp($not_eps);
       my %prog_state;   &debug( "Being asked to convert $not_eps");
       if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Coverting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80');  }   if ($not_eps ne '') {
       print('<br />');      $not_eps=~s|\/\.\/|\/|g;
       foreach my $not_eps (@content_of_file) {      if (!$done_conversion{$not_eps}) { #  Only convert multiple includes once.
   chomp($not_eps);   &convert_figure($not_eps);
   if ($not_eps ne '') {   $done_conversion{$not_eps} = 1;
       # print "Converting $not_eps"; # Debugging.      }
               my $status_statement='EPS picture for '.$not_eps;   }
       # print "$status_statement\n";      }
       $not_eps=~s|\/\.\/|\/|g;      if ($advanced_role) { 
       my $eps_f = $not_eps;   &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); 
       # $eps_f =~ s/\.[^.]*$/\.eps/i;      }
       $eps_f .= '.eps'; # Just append the eps ext.      unlink($figfile);
       if ($eps_f=~/\/home\/([^\/]+)\/public_html\//) {  }
                   $eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;  #     End of figure conversion section:
   $eps_f = '/home/httpd/prtspool/'.$eps_f;  #
       } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\//) {  #--------------------------------------------------------------------------------------------
   $eps_f=~m/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\/(.+)/;  #
   $eps_f = '/home/httpd/prtspool/'.$1;  #  Figure out which Tex files we need to process.  If this is a large class e.g.
       } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\//) {  #  the instructor may have asked that the printout be by section, one section per file
   $eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/;  #  in that case, the output tex fiels will be the base filename with 3 digit serial numbers
   $eps_f = '/home/httpd/prtspool/'.$1.'/'.$2;  #  just prior to the .tex file type.
       }  #  By the time this loop exits, @texfile is an array of the files to process.
       $eps_f  =~ s/ /\_/g; # Spaces are problematic for system commands and LaTeX.  #
       my $path=$eps_f;  
       $path =~ s/\/([^\/]+)\.eps$//;  
       # print "Final file path: $path "; # Debugging  
       File::Path::mkpath($path,0,0777);  
       $not_eps =~ s/^\s+//;  
       $not_eps =~ s/\s+$//;  
       $not_eps =~ s/ /\\ /g;  
       if ( exists($done_conversion{$not_eps})) { next; }  
       if ($advanced_role) {  
   my $prettyname=$not_eps;  
   $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;  
   $prettyname=~s|$Apache::lonnet::perlvar{'lonDocRoot'}/|/|;  
   &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Converting to EPS '.$prettyname);  
       }  
       $done_conversion{$not_eps}=1;  
       # print "Converting $not_eps -> $eps_f"; # Debugging  
       system("convert $not_eps $eps_f");  
               # check is eps exist in prtspool  
               if (not -e $eps_f) {  
   # converting an animated gif creates either:  
                   # anim.gif.eps.0  
                   # or  
                   # anim.gif-0.eps  
   for (my $i=0;$i<10000;$i++) {  
       if (-e $eps_f.'.'.$i) {  
   rename($eps_f.'.'.$i, $eps_f);  
   last;  
       }  
       my $anim_eps = $eps_f;  
       $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;  
       if (-e $anim_eps) {  
   rename($anim_eps, $eps_f);  
   last;  
       }  
   }  
       }  
       # imagemagick 6.2.0-6.2.7 fails to properly handle  
               # convert anim.gif anim.gif.eps  
               # it creates anim.eps instead.   
               if (not -e $eps_f) {  
   my $eps_f2 = $eps_f;  
   $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;  
   if(-e $eps_f2) {  
       rename($eps_f2,$eps_f);  
   }  
       }  
   
   }  my @texfile=($texfile);
       }  if ($number_of_files>1) {
       if ($advanced_role) {       @texfile=();
   &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);       for (my $i=1;$i<=$number_of_files;$i++) {
       }   my $new_texfile=$texfile;
       unlink($figfile);   $new_texfile=~s/\.tex//;
   }   $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
   #print "$texfile\n"; #name of the tex file for debugging only      push @texfile,$new_texfile;
   my @texfile=($texfile);      } 
   if ($number_of_files>1) {  }
       @texfile=();  
       for (my $i=1;$i<=$number_of_files;$i++) {  #--------------------------------------------------------------------------------------------
   my $new_texfile=$texfile;  
   $new_texfile=~s/\.tex//;  
   $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);  
   push @texfile,$new_texfile;  
       }   
   }  
   
 my $ind=-1;  my $ind=-1;
   
 my %prog_state;  my %prog_state;
 if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$number_of_files,'inline','80'); }  if ($advanced_role) { 
       %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$number_of_files); 
   }
 print "<br />";  print "<br />";
 my $num_files = @texfile;  my $num_files = @texfile; # How does this differ from $number_of_files , can that be 0?
   
   
   
   
 foreach $texfile (@texfile) {  foreach $texfile (@texfile) {
   my $status_statement='';    my $status_statement='';
   my $link_text='download PDF';    my $link_text='download PDF';
   $ind++;    $ind++;
   
     #---------------------------------------------------------------------------------------
     #  This chunk of code 
     #  determines the status message for the printout, and the download link text.
     #  If the print is for one or more students, both will contain the range of students
     #  covered by this file.
     #  
   
   my @stud_info=split(/_END_/,$names_pack[$ind]);    my @stud_info=split(/_END_/,$names_pack[$ind]);
   my @tempo_array=split(/:/,$stud_info[0]);    my @tempo_array=split(/:/,$stud_info[0]);       # username:domain:section:full name:...
   my $name;    my $name;
   my $name_range='';    my $name_range='';
   
     # $name       -> Either user's full name or username@domain
     # $name_range -> Either user's last name or usrname.
   
   if ($tempo_array[3]) {    if ($tempo_array[3]) {
       $name=$tempo_array[3];        $name=$tempo_array[3];
       ($name_range) = split(/,/,$name, 2);        ($name_range) = split(/,/,$name, 2);
Line 308  foreach $texfile (@texfile) { Line 318  foreach $texfile (@texfile) {
       $name=$tempo_array[0].'@'.$tempo_array[1];        $name=$tempo_array[0].'@'.$tempo_array[1];
       $name_range = $tempo_array[0];        $name_range = $tempo_array[0];
   }    }
   
     # If there truly is a name add it to the status text so we know which
     # user is getting printed.
     #
   
   if (($name ne "") && ($name ne '@') ) { # Could be printing codes...    if (($name ne "") && ($name ne '@') ) { # Could be printing codes...
       $link_text='<b>'.$name.'</b>';        $link_text='<b>'.$name.'</b>';
       $status_statement.=$name;        $status_statement.=$name;
   }    }
   
     # Group of students being printed...
     # $name_range -> first student's name - last student's name
     #
   
   if ($#stud_info>0) {    if ($#stud_info>0) {
       @tempo_array=split(/:/,$stud_info[-1]);        @tempo_array=split(/:/,$stud_info[-1]);
       if ($tempo_array[3]) {        if ($tempo_array[3]) {
Line 328  foreach $texfile (@texfile) { Line 348  foreach $texfile (@texfile) {
       
       }        }
   }    }
   if(($num_files > 1) && ($link_text eq 'download PDF')) { # Printing codes  
     # $name_range is the range of names in this file.
     # $name is the first of the names in this file.
     #
     #-----------------------------------------------------------------------
   
     #  If the number of files is > 1, but we don't have multiple
     #  student names, we must be printing an exam from codes.
     #  The download link becomes the filename (basename.tex
     #  The status info has the basename appended to it.
     #
     if(($num_files > 1) && ($link_text eq 'download PDF')) {
       $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';        $link_text = '<b>'.basename($texfile,'.tex').'.pdf</b>';
       $status_statement .= basename($texfile);        $status_statement .= basename($texfile);
   }    }
   
   
     #------------------------------------------------------------------------
   
   $name_range =~ s/'//g; # O'Neil -> ONeil e.g.    $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
   
   
   print "<br/>";    print "<br/>";
   if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); }    if ($advanced_role) { 
   #  This little piece of dirt puts username ranges into the original tex        &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Creating PDF for: [_1]',$status_statement)); 
   #  Tex filename from which they'll propagate into the other filenames as well.    }
   #  
   if (-e $texfile) {    if (-e $texfile) { # Ensure the tex file exists:
   
         #---------------------------------------------------------------------
         #
         #  Put username ranges into the original tex
         #  Tex filename from which they'll propagate into the other filenames as well.
         #
   
       if (($name_range ne '') && ($num_files > 1)) {        if (($name_range ne '') && ($num_files > 1)) {
   my $newtexfile = $texfile;    my $newtexfile = $texfile;
   $newtexfile    =~ s/\.tex/$name_range\.tex/;    $newtexfile    =~ s/\.tex/$name_range\.tex/;
   rename($texfile, $newtexfile);    rename($texfile, $newtexfile);
   $texfile       = $newtexfile;    $texfile       = $newtexfile;
       }        }
   
         #---------------------------------------------------------------------
   
       $texfile =~ m/^(.*)\/([^\/]+)$/;         $texfile =~ m/^(.*)\/([^\/]+)$/; 
       my $name_file = $2;        my $name_file = $2;
       my $path_file = $1.'/';        my $path_file = $1.'/';
       chdir $path_file;        chdir $path_file;
       my $dvi_file= $name_file; $dvi_file =~ s/\.tex/$name_range\.dvi/;        my $dvi_file= $name_file; $dvi_file =~ s/\.tex$/\.dvi/;
       &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",        &make_dvi_file($name_file,
  "for $status_statement now LaTeXing file",       $dvi_file,
  \%prog_state,$dvi_file);       $tableofcontents,
       if ($tableofcontents eq 'yes') {       $tableofindex,
       &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",       $status_statement,
  "for $status_statement First LaTeX of file for table of contents",       \%prog_state,
  \%prog_state,$dvi_file);       $busy_wait_timeout);
       &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",  
  "for $status_statement Second LaTeX of file for table of contents",  
  \%prog_state,$dvi_file);  
       } #to create table of contents  
       my $idxname=$name_file;  
       $idxname=~s/\.tex$/\.idx/;  
       if ($tableofindex eq 'yes') {  
   &busy_wait_command("makeindex $idxname",  
      "making index file",  
      \%prog_state,$idxname);  
   &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",  
      "for $status_statement now LaTeXing file for index section",  
      \%prog_state,$dvi_file);  
       } #to create index  
       #Do we have a latex error in the log file?  
       my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;  
       my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";  
       my @content_of_file = <$temporary_file>;  
       close $temporary_file;   
       my $body_log_file = join(' ',@content_of_file);  
       $logfilename =~ s/\.log$/\.html/;  
       $temporary_file = IO::File->new('>'.$logfilename);   
       print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";  
       if ($body_log_file=~m/!\s+Emergency stop/) {  
   my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';  
   my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';  
   my $badresource;  
   my $badtext;  
   if ($whereitbegins!=-1 and $whereitends!=-1) {  
       $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);  
       $whereitbegins  = rindex $badtext,'located in';  
       if ($whereitbegins != -1) {  
     
   $badresource = substr($badtext, $whereitbegins+27,   
  length($badtext) - $whereitbegins - 48);  
   # print "<br />failing resourcename: $badresource<br />";  
       }  
   }  
     
           if ($advanced_role) {    
       #LaTeX failed to parse tex file   
       print "<h2>LaTeX could not successfully parse your tex file.</h2>";  
       print "It probably has errors in it.<br />";  
       print "With very high probability this error occured in ".$badtext."<br /><br />";  
       print "Here are the error messages in the LaTeX log file<br /><pre>";  
   
       my $sygnal = 0;  
       for (my $i=0;$i<=$#content_of_file;$i++) {  
   if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {  
       $sygnal = 1;  
   }   
   if ($content_of_file[$i]=~m/Here is how much of/) {  
       $sygnal = 0;  
   }   
   if ($sygnal) {  
       print "$content_of_file[$i]";  
   }    
       }  
       print "</pre>\n";  
       # print "<br /> Advanced role <br />";  
               print "<b><big>The link to ";  
               $logfilename=~s/\/home\/httpd//;  
       print "<a href=\"$logfilename\">Your log file </a></big></b>";  
       print "\n";  
               #link tooriginal LaTeX file (included according Michael Hamlin desire)  
       my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";  
       my @tex_content_of_file = <$tex_temporary_file>;  
       close $tex_temporary_file;   
       my $body_tex_file = join(' ',@tex_content_of_file);  
       $texfile =~ s/\.tex$/aaaaa\.html/;  
       $tex_temporary_file = IO::File->new('>'.$texfile);   
       print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";  
       print "<br /><br />";  
       print "<b><big>The link to ";  
       $texfile=~s/\/home\/httpd//;  
       print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";  
       print "\n";  
       my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");  
       print ("$help_text");  
   
   } else { # Student role...  
       #  at this point:  
       #    $body_log_file - contains the log file.  
               #    $name_file     - is the name of the LaTeX file.  
               #    $identifier    - is the unique LaTeX identifier.l  
   
       print "<br />There are errors in $badtext";  
       print "<br />These errors prevent this resource from printing correctly";  
       my $tex_handle = IO::File->new($name_file);  
       my @tex_contents = <$tex_handle>;  
       &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);  
       print "<br />A message has been sent to the instructor describing this failure<br />";  
       my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing");  
       print  ("$help_text");  
   
   }        #Do we have a latex error in the log file?
   
       } elsif ($body_log_file=~m/<inserted text>/) {  
   my $whereitbegins = index $body_log_file,'<inserted text>';  
   print "You are running LaTeX in <b>batch mode</b>.";  
   while ($whereitbegins != -1) {  
       my $tempobegin=$whereitbegins;  
       $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;  
       my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;  
       print "<br />It has found an error in".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)." <br /> and corrected it.\n";  
       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";  
       $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;  
   }  
   $name_file =~ s/\.tex/\.dvi/;  
   my $new_name_file = $name_file;  
   $new_name_file =~ s/\.dvi/\.ps/;  
   my $papera=$paper;  
   if ($papera eq 'letter') {$papera='';}  
   if ($papera ne '') {$papera='-t'.$papera;}  
   my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";  
   &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",  
      "for $status_statement now Converting to PS",  
      \%prog_state,$new_name_file);  
   if (-e $new_name_file) {  
       my $latex_file = $name_file;  
       $latex_file    =~ s/\.dvi/\.tex/;  
       &repaginate($new_name_file, $latex_file, $numberofcolumns);  
       #  
       #  Now have to re-latex, re dvips again to   
       #  get the repaginated postscript.  
       #  
       &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",  
  "for $status_statement first latex to repaginate",  
  \%prog_state, $name_file);  
       &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",  
  "for $status_statement second latex to repaginate",  
  \%prog_state, $name_file);  
       &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",  
  "for $status_statement third latex to repaginate",  
  \%prog_state, $name_file);  
       &busy_wait_command("$comma $name_file 1>dev/null 2>/dev/null",  
  "for $status_statement dvips to repaginate",  
  \%prog_state, $new_name_file);  
   
       print "\n<h1>PDF output file (see link below)</h1>\n";        my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
       $new_name_file =~ m/^(.*)\./;  
       my $ps_file = my $tempo_file = $1.'temporar.ps';  
       my $pdf_file = $1.'.pdf';  
       if ($laystyle eq 'album' and $numberofcolumns eq '2') {  
   my $papera=$paper;  
                   if ($papera eq 'letter') {$papera='';}  
   if ($papera ne '') {$papera='-p'.$papera;}  
   $comma = "psnup $papera -2 -s1.0 $new_name_file";  
   &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",  
      "for $status_statement now Modifying PS layout",  
      \%prog_state,$tempo_file);   
       } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {  
   my $papera=$paper;  
                   if ($papera eq 'letter') {$papera='';}  
   if ($papera ne '') {$papera='-p'.$papera;}  
   $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';  
   &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",  
      "for $status_statement now Modifying PS layout",  
      \%prog_state,$tempo_file);   
   
       } else {  
   $ps_file=$new_name_file;  
       }      
       &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",  
  "for $status_statement now Converting PS to PDF",  
  \%prog_state, $pdf_file);  
   
       my $texlog = $texfile;        if (&analyze_logfile($logfilename, $texfile, $advanced_role)) {
       my $texaux = $texfile;    
       my $texdvi = $texfile;  
       my $texps = $texfile;  
       $texlog =~ s/\.tex/\.log/;  
       $texaux =~ s/\.tex/\.aux/;  
       $texdvi =~ s/\.tex/\.dvi/;  
       $texps =~ s/\.tex/\.ps/;  
       my @garb = ($texaux,$texdvi,$texps);  
 #  unlink @garb;  
       unlink $duefile;  
       print "<a href=\"/prtspool/$pdf_file\">Your PDF document</a>";  
   }  
   if ($advanced_role) {    
       print "<br /><br />";  
       print "<b><big>The link to ";  
       $logfilename=~s/\/home\/httpd//;  
       print "<a href=\"$logfilename\">Your log file </a></big></b>";  
       print "\n";  
       #link tooriginal LaTeX file (included according Michael Hamlin desire)  
       my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";  
       my @tex_content_of_file = <$tex_temporary_file>;  
       close $tex_temporary_file;   
       my $body_tex_file = join(' ',@tex_content_of_file);  
       $texfile =~ s/\.tex$/aaaaa\.html/;  
       $tex_temporary_file = IO::File->new('>'.$texfile);   
       print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";  
       print "<br /><br />";  
       print "<b><big>The link to ";  
       $texfile=~s/\/home\/httpd//;  
       print "<a href=\"$texfile\">Your original LaTeX file </a></big></b>";  
       print "\n";  
   }  
       } else {  
   #LaTeX successfully parsed tex file     #LaTeX successfully parsed tex file 
   $name_file =~ s/\.tex/\.dvi/;    $name_file =~ s/\.tex/\.dvi/;
   my $new_name_file = $name_file;    my $new_name_file = $name_file;
Line 565  foreach $texfile (@texfile) { Line 422  foreach $texfile (@texfile) {
   my $papera=$paper;    my $papera=$paper;
   if ($papera eq 'letter') {$papera='';}    if ($papera eq 'letter') {$papera='';}
   if ($papera ne '') {$papera='-t'.$papera;}    if ($papera ne '') {$papera='-t'.$papera;}
   my $comma = "dvips $papera -Ppdf -G0 -o $new_name_file";    my $extra_ps_header = $perlvar{'lonLib'} .'/includepsheader.ps';
     my $comma = "dvips $papera -h $extra_ps_header -Ppdf -G0 -o  $new_name_file";
   &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",    &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
      "for $status_statement now Converting to PS",       "for $status_statement now Converting to PS",
      \%prog_state,$new_name_file);       \%prog_state,$new_name_file);
     #
     #  One last little hinky kinky thing.
     #  It's just possible that some fonts could not be maded
     #  at the resolution of the pdf print driver.
     #  In that case a file called missfont.log will have been
     #  created that will contain the commands that were attempted
     # to create the missing fonts.  If we basically
     # take all the 8000 strings in that file, and
     # replace them with 600 (the ljfour resolution)
     # run the commands in that file and redvips,
     # we'll be able to print the missing glyphs at 600dpi.
     #
     # Supposedly it is possible to tune TeX/Metafont to do this
     # right but I failed to get that to work when following the
     # docs at the tug site, hence this rather kludgey fix.
     #
   
     my $print_directory = dirname($name_file);
     my $missfonts_file  = $print_directory."/missfont.log";
     #print("<br /> Missing fonts file is: $missfonts_file");
     if (-e $missfonts_file) {
         #print("<br />Missing fonts file exists\n");
         &create_missing_fonts($missfonts_file,\%prog_state);
         &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
    "for $status_statement dvips generated missing fonts",
    \%prog_state, $new_name_file);
     }
   if (-e $new_name_file) {    if (-e $new_name_file) {
       my $latex_file = $name_file;        my $latex_file = $name_file;
       $latex_file =~ s/\.dvi/\.tex/;        $latex_file =~ s/\.dvi/\.tex/;
       &repaginate($new_name_file, $latex_file,  $numberofcolumns);        &repaginate($new_name_file, $latex_file,  $numberofcolumns);
       &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",  
  "for $status_statement first latex to repaginate",        &make_dvi_file($latex_file,
  \%prog_state, $name_file);       $name_file,
       &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",       $tableofcontents,
  "for $status_statement second latex to repaginate",       $tableofindex,
  \%prog_state, $name_file);       $status_statement,
       &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",       \%prog_state,
  "for $status_statement third latex to repaginate",       $busy_wait_timeout);
  \%prog_state, $name_file);  
   
       &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",        &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
  "for $status_statement dvips to repaginate",   "for $status_statement dvips to repaginate",
  \%prog_state, $new_name_file);   \%prog_state, $new_name_file);
   
       print "<br />";        print "<br />";
       $new_name_file =~ m/^(.*)\./;        $new_name_file =~ m/^(.*)\./;
       my $ps_file = my $tempo_file = $1.'temporar.ps';        my $ps_file = my $tempo_file = $1.'temporar.ps';
       my $pdf_file = $1.'.pdf';        my $pdf_file = $1.'.pdf';
       $papera=~s/t/p/;        $papera=~s/t/p/;
   #----
   # The code below uses fixps to make pdf include in sequences work.
   #
   #              $comma = "fixps --force $new_name_file";
   #              &debug("FIXPS command: $comma");
   #              &busy_wait_command("$comma 1>$tempo_file  2>/dev/null",
   #                                 "for $status_statement now validating PS",
   #                                 \%prog_state,$tempo_file);
   
   #--- 
   #  The code below uses gs to make pdf includes in sequences work
   
         # Use gs to fix the postscript -> level 1.5 
         # .. if pdfs were included
   
         if ($pdfs_converted > 0) {
     $comma = "gs -sDEVICE=pswrite -dLanguageLevel=1.5 ";
     &busy_wait_command("$comma -o $tempo_file $new_name_file 2>/dev/null 1>/dev/null",
        "for $status_statement now validating PS",
        \%prog_state, $tempo_file);
     
   #---
     &busy_wait_command("mv $tempo_file $new_name_file",
        'File move', \%prog_state, $new_name_file);
         }
       if ($laystyle eq 'album' and $numberofcolumns eq '2') {        if ($laystyle eq 'album' and $numberofcolumns eq '2') {
   $comma = "psnup $papera -2 -s1.0 $new_name_file";    $comma = "psnup $papera -2 -s1.0 $new_name_file";
     &debug("PSNUP command: $comma");
   &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",    &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
      "for $status_statement now Modifying PS layout",       "for $status_statement now Modifying PS layout",
      \%prog_state,$tempo_file);       \%prog_state,$tempo_file);
       } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {        } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') {
   $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)"';    $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)" '.$new_name_file;
   &busy_wait_command("$comma $new_name_file $tempo_file 1>/dev/null 2>/dev/null",    &debug("PSTOPS command: $comma ");
     &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null",
      "for $status_statement now Modifying PS layout",       "for $status_statement now Modifying PS layout",
      \%prog_state,$tempo_file);        \%prog_state,$tempo_file); 
       } else {        } else {
Line 624  foreach $texfile (@texfile) { Line 538  foreach $texfile (@texfile) {
   close(FFHS);    close(FFHS);
   $ps_file=$new_ps_file;      $ps_file=$new_ps_file;  
       }        }
       &busy_wait_command("ps2pdf $ps_file $pdf_file 1>/dev/null 2>/dev/null",        &busy_wait_command("ps2pdf13 $ps_file $pdf_file 1>/dev/null 2>/dev/null",
  "for $status_statement now Converting PS to PDF",   "for $status_statement now Converting PS to PDF",
  \%prog_state,$pdf_file);   \%prog_state,$pdf_file);
           
Line 638  foreach $texfile (@texfile) { Line 552  foreach $texfile (@texfile) {
       $texps =~ s/\.tex/\.ps/;        $texps =~ s/\.tex/\.ps/;
       my @garb = ($texlog,$texaux,$texdvi,$texps);        my @garb = ($texlog,$texaux,$texdvi,$texps);
 #  unlink @garb;  #  unlink @garb;
       unlink $duefile;        unlink($duefile);
       print "<a href=\"/prtspool/$pdf_file\">$link_text - click here to download pdf</a>";        print "<a href=\"/prtspool/$pdf_file\">$link_text - click here to download pdf</a>";
       print "\n";        print "\n";
   }    }
     unlink($missfonts_file);
   
       }          }  
   } else {    } else {
       print "LaTeX file $texfile was not created successfully";        print "LaTeX file $texfile was not created successfully";
Line 659  if ($number_of_files>1) { Line 575  if ($number_of_files>1) {
     print("<pre>Zip Output:\n");      print("<pre>Zip Output:\n");
     system($statement);      system($statement);
     print("</pre>");      print("</pre>");
     $zipfile=~s/\/home\/httpd//;      $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
     print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";      print "<br /> A <a href=\"$zipfile\">ZIP file</a> of all the PDFs.";
 }  }
 if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }  if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
Line 669  my $done; Line 585  my $done;
 sub REAPER {  sub REAPER {
     $done=1;      $done=1;
 }  }
   #
   #  Execute a command updating the status window as the command's
   #  output file builds up (at intervals of a second).
   #
   #   If the timeout argument defined, then if that many seconds
   #   elapses without an increase in the size of the output file,
   #   the command will be killed (this deals with the case when
   #   latex crawls into an infinite loop).
   #
 sub busy_wait_command {  sub busy_wait_command {
     my ($command,$message,$progress_win,$output_file)=@_;      my ($command,$message,$progress_win,$output_file, $timeout)=@_;
           
     $SIG{CHLD} = \&REAPER;      $SIG{CHLD} = \&REAPER;
     $done=0;      $done=0;
     print("<p> Doing : <tt>$command</tt>");  
     my $pid=open(CMD,"$command |");      my $pid=open(CMD,"$command |");
     if ($advanced_role) {      if ($advanced_role) {
  &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);   &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
     }      }
       my $last_size      = 0;
       my $unchanged_time = 0;
     while(!$done) {      while(!$done) {
  sleep 1;   sleep 1;
  my $extra_msg;   my $extra_msg;
  if ($output_file) {   if ($output_file) {
     my $size=(stat($output_file))[7];      my $size=(stat($output_file))[7];
     $extra_msg=", $size bytes generated";      $extra_msg=", $size bytes generated";
       if ($size == $last_size) {
    $unchanged_time++;
    if ($timeout && ($unchanged_time > $timeout)) {
       print "<h1>Operation timed out!</h1>\n";
       print "<p>Executing $command, the output file $output_file did not grow\n";
       print "after $timeout seconds.  This <em>may</em> indicate $command\n";
       print "is in an infinite loop.\n";
       print "See if printing fewer copies helps.  Please contact LON-CAPA\n";
       print "support about this in any event.";
       print "</p>";
       kill(9, $pid); # Reaper will do the rest...I hope there's errors in the log.
    }
       } else {
    $last_size      = $size;
    $unchanged_time = 0;
       }
  }   }
  if ($advanced_role) {   if ($advanced_role) {
     &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,      &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message.$extra_msg);
   $message.$extra_msg);  
  }   }
     }      }
     $SIG{CHLD}='IGNORE';      $SIG{CHLD}='IGNORE';
     close(CMD);      close(CMD);
 }  }
     print("<p> End</p>");  
   # Make the dvi file (or rather try to), from the latex file and the
   # various bits and pieces that control how the latex file is processed:
   # LaTeX is run as many times a needed to make this all happen... this may
   # result in several runs of LaTeX that just are errors if the LaTeX is
   # bad, but the printing subsystem is _supposed_ to not do that.
   #
   # Parameters:
   #   name_file        - Name of the LaTeX file to process.
   #   dvi_file         - Name of resulting dvi file.
   #   tableofcontents  - "yes" if we are supposed to make a table of contents.
   #   tableofindex     - "yes" if we are suposed to make an index.
   #   status_statement - Part of the status statement for ths status window.
   #   prog_state       - Reference to the program state hash.
   #   busy_wait_timeout- Seconds without any progress that imply a problem.
   #
   #
   sub make_dvi_file {
       my ($name_file,
    $dvi_file,
    $tableofcontents,
    $tableofindex,
    $status_statement,
    $prog_state,
    $busy_wait_timeout) = @_;
       
       
       &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
          "for $status_statement now LaTeXing file",
          $prog_state,$dvi_file, $busy_wait_timeout);
   
       # If the tableof contents was requested, we need to run 
       # LaTex a couple more times to get all the references sorted out.
   
       if ($tableofcontents eq 'yes') {
    &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
      "for $status_statement First LaTeX of file for table of contents",
      $prog_state,$dvi_file, $busy_wait_timeout);
    &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
      "for $status_statement Second LaTeX of file for table of contents",
      $prog_state,$dvi_file,$busy_wait_timeout);
       } 
   
       # And makeindex and another run of LaTeX to incorporate it if the index
       # is enabled.
   
   
       if ($tableofindex eq 'yes') {
    my $idxname=$name_file;
    $idxname=~s/\.tex$/\.idx/;
    &busy_wait_command("makeindex $idxname",
      "making index file",
      $prog_state,$idxname);
    &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
      "for $status_statement now LaTeXing file for index section",
      $prog_state,$dvi_file, $busy_wait_timeout);
       } 
       
   }    
   
   
 #  Repagninate  #  Repagninate
 #  What we need to do:  #  What we need to do:
Line 724  sub repaginate { Line 723  sub repaginate {
     my $line;      my $line;
     my $total_pages; # Total pages in document.      my $total_pages; # Total pages in document.
     my $seen_pages        = 0; # There are several %%Pages only the first is useful      my $seen_pages        = 0; # There are several %%Pages only the first is useful
     my $student_number    = 0; # Index of student we're working on.  
     my @pages_in_student; # For each student his/her initial page count.      my @pages_in_student; # For each student his/her initial page count.
     my $max_pages = 0; # Pages in 'longest' student.      my $max_pages = 0; # Pages in 'longest' student.
     my $page_number = 0;      my $page_number = 0;
       &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]",1));
   
     while ($line = <PSFILE>) {      while ($line = <PSFILE>) {
   
  # Check for total pages (%%Pages:)   # Check for total pages (%%Pages:)
Line 744  sub repaginate { Line 744  sub repaginate {
  #  bottom of the page, m the page number within the document.   #  bottom of the page, m the page number within the document.
  #   #
   
  if ($line =~ /^%%Page:/) {   if ($line =~ /^%%Page:\s+\d+\s+\d+/) {
     my @pageinfo = split(/ /, $line);      my @pageinfo = split(/\s+/, $line);
     if ($page_number < $pageinfo[1]) {      if ($page_number < $pageinfo[1]) {
  $page_number = $pageinfo[1];   $page_number = $pageinfo[1];
       } elsif ($pageinfo[2] ne 1) {
    #  current page count reset, and it's not because of a 
    #    minipage 
    # - save the page_number, reset and, if necessary
    #    update max_pages.
    push(@pages_in_student, $page_number);
    &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]", scalar(@pages_in_student)));
    if ($page_number > $max_pages) {
       $max_pages = $page_number;
    }
    $page_number = $pageinfo[1];
     }      }
  }   }
  #  ENDOFSTUDENTSTAMP - save the page_number, reset and, if necessary  
  #                      udpate max_pages.  
  #  
  if ($line =~ /ENDOFSTUDENTSTAMP/) {  
     $pages_in_student[$student_number] = $page_number;  
     $student_number++;  
   
     if ($page_number > $max_pages) {  
  $max_pages = $page_number;  
     }  
     $page_number = 0;  
     
  }  
   
   
     }      }
       # file ended so one more student
       push(@pages_in_student, $page_number);
       &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]",scalar(@pages_in_student)));
       if ($page_number > $max_pages) {
    $max_pages = $page_number;
       }
       $page_number = 0;
       
     close(PSFILE);      close(PSFILE);
   
     #  If 2 columns, max_pages must go to an even number of columns:      #  If 2 columns, max_pages must go to an even number of columns:
   
     &Apache::lonnet::logthis("Before 2 col adjust max-pages = $max_pages");  
         
     if ($num_columns == 2) {      if ($num_columns == 2) {
  if ($max_pages % 2) {   if ($max_pages % 2) {
     $max_pages++;      $max_pages++;
  }   }
     }      }
     &Apache::lonnet::logthis("after adjust: $max_pages");  
           
     #  Now rewrite the LaTex file, substituting our \special      #  Now rewrite the LaTex file, substituting our \special
     #  with an appropriate number of \newpage directives.      #  with an appropriate number of \newpage directives.
Line 788  sub repaginate { Line 792  sub repaginate {
     open(LATEXOUT, ">$outfilename");      open(LATEXOUT, ">$outfilename");
   
   
     $student_number = 0; # first student...      my $student_number    = 0; # Index of student we're working on.
       &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1));
   
     while (my $line = <LATEXIN>) {      while (my $line = <LATEXIN>) {
  if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {   if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") {
Line 798  sub repaginate { Line 803  sub repaginate {
     # End of student replace with 0 or more newpages.      # End of student replace with 0 or more newpages.
           
     my $addlines = $max_pages - $pages_in_student[$student_number];      my $addlines = $max_pages - $pages_in_student[$student_number];
     &Apache::lonnet::logthis("student: $pages_in_student[$student_number] add: $addlines");  
     while($addlines)  {      while($addlines)  {
  print LATEXOUT '\pagebreak';   print LATEXOUT '\clearpage \strut \clearpage';
   
  $addlines--;   $addlines--;
     }      }
           
     $student_number++;      $student_number++;
       &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1));
           
  } else {   } else {
     print LATEXOUT $line;      print LATEXOUT $line;
Line 813  sub repaginate { Line 819  sub repaginate {
   
     close(LATEXIN);      close(LATEXIN);
     close(LATEXOUT);      close(LATEXOUT);
    rename($outfilename, $latex_filename);      rename($outfilename, $latex_filename);
   
 }  }
   
   #
   #   Create missing fonts given a latex missfonts.log file.
   #   This file will have lines like:
   #
   #   mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 tcrm0500
   #
   #  We want to execute those lines with the 8000's changed to 600's
   #  in order to match the resolution of the ljfour printer.
   #  Of course if some wiseguy has changed the default printer from ljfour
   #  in the dvips's config.ps file that will break so we'll also
   #  ensure that --mfmode is ljfour.
   #
   sub create_missing_fonts {
       my ($fontfile, $state) = @_;
   
       # Open and read in the font file..we'll read it into the array
       #  font_commands.
       #
       open(my $font_handle, $fontfile);
       my @font_commands = <$font_handle>;
   
       # make the list contain each command only once
       my %uniq;
       @font_commands = map { $uniq{$_}++ == 0 ? $_ : () } @font_commands;
   
       #  Now process each command replacing the appropriate 8000's with
       #  600's ensuring that font names with 8000's in them are not corrupted.
       #  and if the --mfmode is not ljfour we turn it into ljfour.
       #   Then we execute the command.
       #
       
       foreach my $command (@font_commands) {
    #print("<br />Raw command: $command");
    $command =~ s/ 8000/ 600/g;    # dpi directives.
    $command =~ s/\/8000/\/600/g;  # mag directives.
    #print("<br />After dpi replacements: $command");
   
    my @cmdarray = split(/ /,$command);
    for (my $i =0; $i < scalar(@cmdarray); $i++) {
       if ($cmdarray[$i] eq '--mfmode') {
    $cmdarray[$i+1] = "ljfour";
       }
    }
    #print("<br /> before reassembly : (@cmdarray)");
    $command = join(" ", (@cmdarray));
   
    #print("<br />Creating fonts via command: $command");
    &busy_wait_command("$command 1>/dev/null 2>/dev/null",
      "Creating missing font",
      $state);
      
       }
   
   }
   #
   #  Convert a figure file to encapsulated postscript:
   #  At present, this is using a lot of file scoped globals to pass data around. 
   # Parameters:
   #    not_eps  - The name of the file to convert which, presumably, is not
   #               already an eps file.
   #
   sub convert_figure {
       my ($not_eps) = @_;
       &debug("in convert_figure");
   
       my $status_statement='EPS picture for '.$not_eps;
       my $eps_f = $not_eps;
   
       if ($eps_f=~/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)\//) {
    $eps_f=~s/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)/$1/;
       } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) {
    $eps_f=~ s/$perlvar{'lonDocRoot'}\/res\/(.+)/$1/;
       } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) {
    $eps_f=~ s/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/$1\/$2/;
       }
   
       $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
   
       # Spaces are problematic for system commands and LaTeX, replace with _
   
       $eps_f  =~ s/ /\_/g; 
   
       # 
       # If the file is already an .eps or .ps file (eps_f still has the original
       # file type),
       # We really just need to copy it from where it was to prtspool
       # but with the spaces substituted to _'s.
       #
       my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);
       if ($sext =~/ps$/i) {
    &File::Path::mkpath($path,0,0777);
    copy("$not_eps", "$eps_f"); 
       } else {
   
    $eps_f .= '.eps'; # Just append the eps ext.
    my $path= &dirname($eps_f);
    &File::Path::mkpath($path,0,0777);
    $not_eps =~ s/^\s+//;
    $not_eps =~ s/\s+$//;
    $not_eps =~ s/ /\\ /g;
       my $prettyname=$not_eps;
    if ($advanced_role) {
       $prettyname=~s|$perlvar{'lonDocRoot'}/|/|;
       &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Converting to EPS: [_1]',$prettyname));
    }
    #
    #  If the file is a PDF, need to use pdftops to convert it to a ps file.
    #  otherwise use imagemagik:
    #
    if($not_eps =~/\.(pdf|PDF)$/) {
   
       #
       # For whatever reason, pure postscript conversions have to be
       # in the same dir as the base file:
       #
       $eps_f = &basename($eps_f);
       $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
   
       &debug("Converting pdf $not_eps to postscript: $eps_f");
       system("pdftops $not_eps $eps_f");
       $pdfs_converted++; # Need to fix ps in last pass.
    } else {
       system("convert $not_eps $eps_f");
           if($? and $advanced_role){
               print "<p class=\"LC_warning\">"
                     .mt("An error occured during the conversion of [_1].[_2]"
                     ."If possible try to save this image using different settings and republish it.",
                     "<span class=\"LC_filename\">".$prettyname."</span>", "<br/>")
                     ."</p>";
           }
    }
   
    if (not -e $eps_f) {
       # converting an animated gif creates either:
       # anim.gif.eps.0
       # or
       # anim.gif-0.eps
       for (my $i=0;$i<10000;$i++) {
    if (-e $eps_f.'.'.$i) {
       rename($eps_f.'.'.$i, $eps_f);
       last;
    }
    my $anim_eps = $eps_f;
    $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
    if (-e $anim_eps) {
       rename($anim_eps, $eps_f);
       last;
    }
       }
    }
   
    # imagemagick 6.2.0-6.2.7 fails to properly handle
    # convert anim.gif anim.gif.eps
    # it creates anim.eps instead. 
    if (not -e $eps_f) {
       my $eps_f2 = $eps_f;
       $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
       if(-e $eps_f2) {
    rename($eps_f2,$eps_f);
       }
    }
       }
       
   }
   #
   #   Analyze a LaTeX logfile producing appropriate  output on error and 
   #   returning a boolean to let the caller know if, in our opinion, it's
   #   worth continuing on to produce the PDF file.
   #
   # Parameters:
   #   logfilename   - Name of the logfile.
   #   texfile       - Name of the LaTeX file that was being processed.
   #   advanced_role - True if the user is privileged with respect to the printout
   #                   (e.g. is the course coordinator or some such thing).
   # Returns:
   #    1            - Caller is advised to continue to create the PDF.
   #    0            - Caller need not bother creating the PDF.
   # Side Effects:
   #   Messages are printed to describe any errors that have been encountered.
   # NOTE:
   #    The current policy is to assume that if LaTeX decided to insert some text
   #    it has salvaged the resource and the resource can be printed.. in that case
   #    a message is emitted from this sub.
   #
   sub analyze_logfile {
       my ($logfilename, $texfile, $advanced_role) = @_;
   
       my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
       my @content_of_file = <$temporary_file>;
       close $temporary_file; 
       my $body_log_file = join(' ',@content_of_file);
       $logfilename =~ s/\.log$/\.html/;
       $temporary_file = IO::File->new('>'.$logfilename); 
       print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
       if ($body_log_file=~m/!\s+Emergency stop/) {
    my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
    my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
    my $badresource;
    my $badtext;
    if ($whereitbegins!=-1 and $whereitends!=-1) {
       $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
       $whereitbegins  = rindex $badtext,'located in';
       if ($whereitbegins != -1) {
   
    $badresource = substr($badtext, $whereitbegins+27, 
         length($badtext) - $whereitbegins - 48);
    # print "<br />failing resourcename: $badresource<br />";
       }
           }
   
    # Guys with privileged roles get a more detailed error output:
   
    if ($advanced_role) {  
       #LaTeX failed to parse tex file 
       print "<h2>".&mt('LaTeX could not successfully parse your TeX file.')."</h2>";
       print &mt('It probably has errors in it.')."<br />";
       if ($badtext) {
                   print &mt('With very high probability this error occured in [_1].',$badtext)
                        ."<br /><br />";
               }
       print &mt('Here are the error messages in the LaTeX log file:')
                    ."<br /><pre>";
       
       my $sygnal = 0;
       for (my $i=0;$i<=$#content_of_file;$i++) {
    if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
       $sygnal = 1;
    } 
    if ($content_of_file[$i]=~m/Here is how much of/) {
       $sygnal = 0;
    } 
    if ($sygnal) {
       print "$content_of_file[$i]";
    }  
       }
       print "</pre>\n";
       # print "<br /> Advanced role <br />";
       $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
       print "<b><big>"
                    .&mt('The link to [_1]Your log file[_2]','<a href="'.$logfilename.'">','</a>')
            ."</big></b>\n";
       #link to original LaTeX file
       my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
       my @tex_content_of_file = <$tex_temporary_file>;
       close $tex_temporary_file; 
       my $body_tex_file = join(' ',@tex_content_of_file);
       $texfile =~ s/\.tex$/aaaaa\.html/;
       $tex_temporary_file = IO::File->new('>'.$texfile); 
       print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
       print "<br /><br />";
       $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
       print "<b><big>"
                    .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>')
            ."</big></b><br /><br />\n";
       my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
       print ("$help_text");
   
       # Students on the other hand get a minimal error message, since they won't
       # be able to correct the error message. A message is sent to the 
       # instructor:
   
    } else { # Student role...
       #  at this point:
       #    $body_log_file - contains the log file.
       #    $name_file     - is the name of the LaTeX file.
       #    $identifier    - is the unique LaTeX identifier.l
       
               print '<p class="LC_error">';
       if ($badtext) {
                   print &mt('There are errors in [_1].',$badtext);
               } else {
                   print &mt('There are errors.');
               }
               print '</p>'
                    .&mt('These errors prevent this resource from printing correctly.');
   
       my $tex_handle = IO::File->new($texfile);
       my @tex_contents = <$tex_handle>;
       &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
       print "<p>"
                    .&mt('A message has been sent to the instructor describing this failure.')
                    ."</p>";
       my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
       print  ("$help_text");
       
     }
   
    # Either way, an emergency stop does not allow us to continue so:
   
    return 0;
   
    # The branch of code below is taken if it appears that 
    # there was no emergency stop but LaTeX had to correct the
    # input file to run.
    # In that case we need to provide error feedback, as the correction >may< not be
    # sufficient, we can let the game continue as there's a dvi file to process.
   
       } elsif ($body_log_file=~m/<inserted text>/) {
    my $whereitbegins = index $body_log_file,'<inserted text>';
    print &mt('You are running LaTeX in [_1]batch mode[_2].','<b>','</b>');
    while ($whereitbegins != -1) {
       my $tempobegin=$whereitbegins;
       $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
       my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
       print "<br />"
                    .&mt('It has found an error in [_1][_2]and corrected it.',substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26),"<br />")."\n";
       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";
       $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
    }
   
    if ($advanced_role) {  
       print "<br /><br />";
       $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
       print "<b><big>"
                    .&mt('The link to [_1]Your log file[_2]'
                        ,'<a href="'.$logfilename.'">','</a>')
            ."</big></b>\n";
       #link to original LaTeX file
       my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
       my @tex_content_of_file = <$tex_temporary_file>;
       close $tex_temporary_file; 
       my $body_tex_file = join(' ',@tex_content_of_file);
       $texfile =~ s/\.tex$/aaaaa\.html/;
       $tex_temporary_file = IO::File->new('>'.$texfile); 
       print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
       print "<br /><br />";
       $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
       print "<b><big>"
                     .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>');
       print "</big></b>\n";
    }
    return 1;
       }
       return 1; # NO log file issues at all.
   }
Removed from v.1.103  
changed lines
  Added in v.1.151

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>