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Diff for /loncom/interface/printout.pl between versions 1.126 and 1.144

version 1.126, 2007/09/21 20:56:30 version 1.144, 2009/09/27 02:47:11
Line 43  use LONCAPA::Configuration; Line 43  use LONCAPA::Configuration;
   
 use strict;  use strict;
   
   my $busy_wait_timeout = 30; 
   
   
   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 112  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 131  sub send_error_mail { Line 142  sub send_error_mail {
     }      }
     my (undef, %receivers) = &Apache::lonmsg::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 164  END Line 175  END
 }  }
   
 my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};  my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
  &Apache::lonlocal::get_language_handle();  &Apache::lonlocal::get_language_handle();
  &Apache::loncommon::content_type(undef,'text/html');  &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/;
   
   print(&Apache::loncommon::start_page('Creating PDF'));  
   
   my $identifier = $ENV{'QUERY_STRING'};  #-------------------------------------------------------------------------------------
   my $texfile = $env{'cgi.'.$identifier.'.file'};  #
   my $laystyle = $env{'cgi.'.$identifier.'.layout'};  #   Each print may have associated with it a file that contains a set of figures
   my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};  #   that need to be converted to .eps from whatever form they were in when included
   my $paper = $env{'cgi.'.$identifier.'.paper'};  #   in the resource.  The name of the figure file is in $figfile.  If it exists,
   my $selectionmade = $env{'cgi.'.$identifier.'.selection'};  #   it contains the names of the files that need to be converted, one per line.
   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'});  
   
     &debug("Figure file is $figfile");
   my @names_pack=();  
   if ($student_names=~/_END_/) {    
       @names_pack=split(/_ENDPERSON_/,$student_names);  
   }  
   
 print "<a href=\"$backref\"><b>Return</b></a> to last resource.<br /><br />";  if (-e $figfile) {
       &debug( "Figure file exists");
       &debug("$figfile exists");
       my %done_conversion;
       my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
       my @content_of_file = <$temporary_file>;
       close $temporary_file;  
       my $noteps;
       my %prog_state;
       if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Converting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80');  }
       print('<br />');
       foreach my $not_eps (@content_of_file) {
    chomp($not_eps);
    &debug( "Being asked to convert $not_eps");
    if ($not_eps ne '') {
       $not_eps=~s|\/\.\/|\/|g;
       if (!$done_conversion{$not_eps}) { #  Only convert multiple includes once.
    &convert_figure($not_eps);
    $done_conversion{$not_eps} = 1;
       }
    }
       }
       if ($advanced_role) { 
    &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); 
       }
       unlink($figfile);
   }
   #     End of figure conversion section:
   #
   #--------------------------------------------------------------------------------------------
   #
   #  Figure out which Tex files we need to process.  If this is a large class e.g.
   #  the instructor may have asked that the printout be by section, one section per file
   #  in that case, the output tex fiels will be the base filename with 3 digit serial numbers
   #  just prior to the .tex file type.
   #  By the time this loop exits, @texfile is an array of the files to process.
   #
   
   my $figfile = $texfile;  my @texfile=($texfile);
   $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/;  if ($number_of_files>1) {
   my $duefile = $texfile;      @texfile=();
   $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/;      for (my $i=1;$i<=$number_of_files;$i++) {
   #do we have figures?   my $new_texfile=$texfile;
   # print "Figure file: $figfile\n";   $new_texfile=~s/\.tex//;
   if (-e $figfile) {   $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i);
       # print "$figfile exists\n";   push @texfile,$new_texfile;
       my %done_conversion;      } 
       my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";  }
       my @content_of_file = <$temporary_file>;  
       close $temporary_file;    
       my $noteps;  
       my %prog_state;  
       if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Coverting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80');  }  
       print('<br />');  
       foreach my $not_eps (@content_of_file) {  
   chomp($not_eps);  
   if ($not_eps ne '') {  
        # print "Converting $not_eps"; # Debugging.  
               my $status_statement='EPS picture for '.$not_eps;  
       # print "$status_statement\n";  
       $not_eps=~s|\/\.\/|\/|g;  
       my $eps_f = $not_eps;  
       # $eps_f =~ s/\.[^.]*$/\.eps/i;  
       if ($eps_f=~/\/home\/([^\/]+)\/public_html\//) {  
                   $eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;  
   $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;  
       } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) {  
   $eps_f=~m/$perlvar{'lonDocRoot'}\/res\/(.+)/;  
   $eps_f = $perlvar{'lonPrtDir'}.'/'.$1;  
       } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) {  
   $eps_f=~/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/;  
   $eps_f = $perlvar{'lonPrtDir'}.'/'.$1.'/'.$2;  
       }  
       $eps_f  =~ s/ /\_/g; # Spaces are problematic for system commands and LaTeX.  
       #   
       # If the file is already an .eps or .ps file,  
       # We really just need to copy it from where it was to prtspool  
       # but with the spaces substituted to _'s.  
       #  
       my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);  
       if ($sext =~/ps$/i) {  
   # print "$not_eps is a postscript file. copy to $path\n";  
   &File::Path::mkpath($path,0,0777);  
   #print("Made path: $path");  
   #$not_eps =~ s/^\s+//;  
   #$not_eps =~ s/\s+$//;  
   #$not_eps =~ s/ /\__/g;  
   #print("Copying $not_eps to $eps_f\n");  
   copy("$not_eps", "$eps_f");   
   # print "Copy complete\n";  
       } else {  
         
   $eps_f .= '.eps'; # Just append the eps ext.  
   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|;  
       $prettyname=~s|$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);  
       }  
   }  
       }  
   
   }  #--------------------------------------------------------------------------------------------
       }  
       if ($advanced_role) {   
   &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);   
       }  
       unlink($figfile);  
   }  
   #print "$texfile\n"; #name of the tex file for debugging only     
   my @texfile=($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 ($advanced_role) { 
       %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status',&mt('Class Print Status'),$number_of_files,'inline','80'); 
   }
 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 334  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 354  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 ($advanced_role) { 
   #  This little piece of dirt puts username ranges into the original tex        &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$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 ";  
               $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};  
       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 ";  
               $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};  
       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");  
   
   }  
   
       } elsif ($body_log_file=~m/<inserted text>/) {        #Do we have a latex error in the log file?
   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, $name_file);  
       if ($tableofcontents eq 'yes') {  
   &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, $name_file);  
       }  
       if ($tableofindex eq 'yes') {  
   my $idxname = $latex_file;  
   $idxname =~ s/\.tex$/\.idx/;  
   &busy_wait_command("makeindex $idxname",  
      "Re-creating index file",  
      \%prog_state, $idxname);  
   &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",  
      "for $status_statement now Recreting index (latex)",  
      \%prog_state, $dvi_file);  
   
       }  
       &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",  
  "for $status_statement dvips to repaginate",  
  \%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.  
       #  
       #  We make the (I think) reasonable assumption that  
       #  missing glyphs won't change the pagination and I think  
       #  this is true because TeX/dvips will leave a space  
       #  instead of these glyphs based on the font metrics  
       #  (fancy way to say there will be a blank the size of the missing  
       #  glyphs).  
       #  
       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);  
       }  
   
       #  
       print "\n<h1>PDF output file (see link below)</h1>\n";  
       $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 {        my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
   $ps_file=$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;  
       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>";  
       unlink($missfonts_file);  
   
   }        if (&analyze_logfile($logfilename, $texfile, $advanced_role)) {
   if ($advanced_role) {      
       print "<br /><br />";  
       print "<b><big>The link to ";  
               $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};  
       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 ";  
               $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};  
       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 641  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);
Line 661  foreach $texfile (@texfile) { Line 443  foreach $texfile (@texfile) {
   # right but I failed to get that to work when following the    # right but I failed to get that to work when following the
   # docs at the tug site, hence this rather kludgey fix.    # docs at the tug site, hence this rather kludgey fix.
   #    #
   #  We make the (I think) reasonable assumption that  
   #  missing glyphs won't change the pagination and I think  
   #  this is true because TeX/dvips will leave a space  
   #  instead of these glyphs based on the font metrics  
   #  (fancy way to say there will be a blank the size of the missing  
   #  glyphs).  
   #  
   my $print_directory = dirname($name_file);    my $print_directory = dirname($name_file);
   my $missfonts_file  = $print_directory."/missfont.log";    my $missfonts_file  = $print_directory."/missfont.log";
   #print("<br /> Missing fonts file is: $missfonts_file");    #print("<br /> Missing fonts file is: $missfonts_file");
Line 682  foreach $texfile (@texfile) { Line 458  foreach $texfile (@texfile) {
       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);       $name_file,
       if ($tableofcontents eq 'yes') {       $tableofcontents,
   &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",       $tableofindex,
      "for $status_statement second latex to repaginate",       $status_statement,
      \%prog_state, $name_file);       \%prog_state,
   &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",       $busy_wait_timeout);
      "for $status_statement third latex to repaginate",  
      \%prog_state, $name_file);  
       }  
       if ($tableofindex eq 'yes') {  
   my $idxname = $latex_file;  
   $idxname    =~ s/\.tex$/\.idx/;  
   &busy_wait_command("makeindex $idxname",  
      "Re-creating index file",  
      \%prog_state, $idxname);  
   &busy_wait_command("latex $latex_file 1>/dev/null 2>/dev/null",  
      "for $status_statement now Recreting index (latex)",  
      \%prog_state, $dvi_file);  
       }  
       &busy_wait_command("$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);
Line 712  foreach $texfile (@texfile) { Line 477  foreach $texfile (@texfile) {
       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/;
                 $comma = "fixps --force $new_name_file";
                 &debug("FIXPS command: $comma");
                 &busy_wait_command("$comma 1>/dev/null 2>/dev/null",
                                    "for $status_statement now validating PS",
                                    \%prog_state,$tempo_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 746  foreach $texfile (@texfile) { Line 518  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 793  my $done; Line 565  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;      $done=0;
Line 803  sub busy_wait_command { Line 583  sub busy_wait_command {
     if ($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,
Line 819  sub busy_wait_command { Line 617  sub busy_wait_command {
     close(CMD);      close(CMD);
 }  }
   
   # 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:
 #   - Count the number of pages in each student.  #   - Count the number of pages in each student.
Line 868  sub repaginate { Line 726  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(/\s+/, $line);      my @pageinfo = split(/\s+/, $line);
     if ($page_number < $pageinfo[1]) {      if ($page_number < $pageinfo[1]) {
  $page_number = $pageinfo[1];   $page_number = $pageinfo[1];
Line 1005  sub create_missing_fonts { Line 863  sub create_missing_fonts {
     }      }
   
 }  }
   #
   #  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\/([^\/]+)\/public_html\//) {
    $eps_f=~s/\/home\/([^\/]+)\/public_html/$1/;
       } elsif ($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+//;
    $not_eps =~ s/\s+$//;
    $not_eps =~ s/ /\\ /g;
    if ($advanced_role) {
       my $prettyname=$not_eps;
       $prettyname=~s|/home/([^/]+)/public_html|/priv/$1|;
       $prettyname=~s|$perlvar{'lonDocRoot'}/|/|;
       &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,
     'Converting to EPS '.$prettyname);
    }
    #
    #  If the file is a PDF, need to use pdftops to convert it to a ps file.
    #  otherwise use imagemagik:
    #
    if($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");
    } else {
       system("convert $not_eps $eps_f");
    }
   
    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.1.126  
changed lines
  Added in v.1.144

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