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Diff for /loncom/interface/printout.pl between versions 1.134 and 1.135

version 1.134, 2008/03/18 10:29:56 version 1.135, 2008/03/26 09:50:21
Line 45  use strict; Line 45  use strict;
   
 my $busy_wait_timeout = 30;   my $busy_wait_timeout = 30; 
   
   sub debug {
       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:
 #    none  #    none
Line 234  if (-e $figfile) { Line 239  if (-e $figfile) {
 #     End of figure conversion section:  #     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 @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;
       } 
   }
   
   #--------------------------------------------------------------------------------------------
   
   #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 ($advanced_role) { 
       %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$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 270  foreach $texfile (@texfile) { Line 299  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 290  foreach $texfile (@texfile) { Line 329  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; $dvi_file =~ s/\.tex$/\.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, $busy_wait_timeout);       $tableofcontents,
       if ($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_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);  
       } #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, $busy_wait_timeout);  
       } #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 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 />";  
       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, $name_file,$busy_wait_timeout);  
       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_timeout);  
   &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_timeout);  
       }  
       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_timeout);  
   
       }  
       &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);  
       }  
   
       #        my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
       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 {  
   $ps_file=$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>";  
       unlink($missfonts_file);  
   
   }  
   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 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 />";  
       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 597  foreach $texfile (@texfile) { Line 423  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 618  foreach $texfile (@texfile) { Line 438  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, $busy_wait_timeout);       $name_file,
       if ($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,  $busy_wait_timeout);       \%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, $busy_wait_timeout);  
       }  
       if ($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, $busy_wait_timeout);  
       }  
       &busy_wait_command("$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 781  sub busy_wait_command { Line 590  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, butthe 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 1053  sub convert_figure { Line 922  sub convert_figure {
     }      }
           
 }  }
   #
   #   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 ($advanced_role) {  
       #LaTeX failed to parse tex file 
       print "<h2>LaTeX could not successfully parse your tex file.</h2>";
       print "It probably has errors in it.<br />";
       print "With very high probability this error occured in ".$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 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 />";
       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");
   
       # 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 "<br />There are errors in $badtext";
       print "<br />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 "<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");
       
     }
   
    # 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 $body_log_file,'<inserted text>';
    print "You are running LaTeX in <b>batch mode</b>.";
    while ($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;
    }
   
    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 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 />";
       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";
    }
    return 1;
       }
       return 1; # NO log file issues at all.
   }
Removed from v.1.134  
changed lines
  Added in v.1.135

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