--- loncom/interface/printout.pl 2002/07/11 20:06:37 1.9 +++ loncom/interface/printout.pl 2007/02/22 01:00:13 1.121 @@ -1,77 +1,1004 @@ #!/usr/bin/perl +# CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc. +# +# $Id: printout.pl,v 1.121 2007/02/22 01:00:13 albertel Exp $ +# +# Copyright Michigan State University Board of Trustees +# +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). +# +# LON-CAPA is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# LON-CAPA is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with LON-CAPA; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# /home/httpd/html/adm/gpl.txt +# +# http://www.lon-capa.org/ +# + +use lib '/home/httpd/lib/perl'; +use LONCAPA::loncgi; +use File::Path; +use File::Basename; +use File::Copy; use IO::File; use Image::Magick; -print "Content-type: text/html\n\n"; -print "\n"; -print "

OUTPUT is in the PDF FILE (see link below)

\n"; -my ($texfile,$laystyle) = split(/&/,$ENV{'QUERY_STRING'}); -my $figfile = $texfile; -$figfile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.dat/; -my $duefile = $figfile; -$duefile =~ s/\.dat$/\.due/; -if (-e $figfile) { - my $temporary_file=IO::File->new($figfile) || die "Couldn't open file for reading: $!\n"; - my @content_of_file = <$temporary_file>; - close $temporary_file; - my $noteps; - foreach $not_eps (@content_of_file) { - if ($not_eps ne '') { - my $eps_f = $not_eps; - $eps_f =~ s/\..*$/\.eps/; - $_ = $eps_f; - m/\/(\w+\.eps)/; - $eps_f = '/home/httpd/prtspool/'.$1; - my $image = Image::Magick->new; - $not_eps =~ s/^\s+//; - $not_eps =~ s/\s+$//; - $status = $image->Read($not_eps); - if ($status) {print " $status ";} - $image->Set(page => '+100+200'); - $status = $image->Write($eps_f); - if ($status) {print " $status ";} - } - } - unlink $figfile; -} -print "$texfile\n"; - $_ = $texfile; - m/^(.*)\/([^\/]+)$/; -my $name_file = $2; -my $path_file = $1.'/'; - chdir $path_file; - system("latex $name_file 1>/dev/null 2>/dev/null"); - $name_file =~ s/\.tex/\.dvi/; -my $new_name_file = $name_file; - $new_name_file =~ s/\.dvi/\.ps/; -my $comma = "dvips -o $new_name_file"; - system("$comma $name_file"); - $_ = $new_name_file; - m/^(.*)\./; -my $tempo_file = $1.'temporar.ps'; -my $name_file = $1.'.pdf'; -if ($laystyle eq 'album') { - $comma = "psnup -2 -s1.0 $new_name_file"; - system("$comma $tempo_file"); - system("ps2pdf $tempo_file $name_file"); -} elsif ($laystyle eq 'book') { - system("ps2pdf $new_name_file $name_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/; -$texps =~ s/\.tex/\.ps/; -my @garb = ($texlog,$texaux,$texdvi,$texps); -unlink @garb; -unlink $duefile; +use Apache::lonhtmlcommon(); +use Apache::lonnet; +use Apache::loncommon(); +use Apache::lonlocal; +use Apache::lonmsg(); +use LONCAPA::Enrollment; + +use strict; + + +# Determine if a user is operating as a student for this course/domain. +#Parameters: +# none +#Implicit: +# $env{request.role} contains the role under which this user operated this +# this request. +sub is_student { + return ($env{'request.role'}=~/^st\./); +} + +# +# Debugging: Dump the environment for debugging. +# +sub dumpenv { + print "
-------------------
"; + foreach my $key (sort (keys %env)) { + print "
$key -> $env{$key}"; + } + print "
-------------------
"; +} + +# +# This sub sends a message to the appropriate person if there was an error +# rendering the latex At present, there's only one case to consider: +# a student printing inside a course results in messages to the course coordinator. +#Parmaeters: +# identifier - The unique identifier of this cgi request. +# badresource- Filepath to most likely failing +# logfile - The contents of the log file (included in the message). +# texfile - reference to an array containing the LaTeX input file +# (included in the message). +#Implicit inputs: +# From the environment: +# cgi.$identifier.user - User doing the printing. +# cgi.$identifier.domain - Domain the user is logged in on with printing. +# cgi.$identifier.courseid - Id of the course (if this is a course). +# cgi.$identifier.coursedom- Domain in which course was constituted. +# cgi.$identifier.resources - List of resource URL's for which the print +# was attempted. +# +sub send_error_mail { + my ($identifier, $badresource, $logfile, $texfile) = @_; + my $user = $env{"cgi.$identifier.user"}; + my $domain = $env{"cgi.$identifier.domain"}; + my $courseid = $env{"cgi.$identifier.courseid"}; + my $coursedom= $env{"cgi.$identifier.coursedom"}; + my $resources= $env{"cgi.$identifier.resources"}; + + # resource file->URL + # + my $badurl = &Apache::lonnet::declutter($badresource); + + # &dumpenv(); + + + + # Only continue if there is a user, domain, courseid, course domain + # and resources: + + if(defined($user) && defined($domain) && defined($courseid) && + defined($coursedom) && defined($resources) ){ + + # Only mail if the conditions are ripe for it: + # The user is a student in the course: + # + + if (&is_student()) { + # build the subject and message body: + # print "sending message to course coordinators.
"; + + # Todo: Convert badurl into a url from file path: + + my $subject = "Error [$badurl] Print failed for $user".'@'.$domain; + my $message .= "Print failed to render LaTeX for $user".'@'."$domain\n"; + $message .= " User was attempting to print: \n"; + foreach my $resource (split(/:/,$resources)) { + $message .= " $resource\n"; + } + $message .= "--------------------LaTeX logfile:------------ \n"; + $message .= $logfile; + $message .= "-----------------LaTeX source file: ------------\n"; + + foreach my $line (@$texfile) { + $message .= "$line\n"; + } + my (undef, %receivers) = &Apache::lonfeedback::decide_receiver(undef, 0, + 1,1,1); + # print "
sending...section: $env{'request.course.sec'}"; + foreach my $dest (keys %receivers) { + # print "
dest is $dest"; + my @destinfo = split(/:/,$dest); + my $user = $destinfo[0]; + my $dom = $destinfo[1]; + + &Apache::lonmsg::user_normal_msg($user, $dom, + $subject, $message); + + # No point in looking at the return status as there's no good + # error action I can think of right now (log maybe?). + } + } + } +} + +$|=1; +if (! &LONCAPA::loncgi::check_cookie_and_load_env()) { + print < +Bad Cookie + +Your cookie information is incorrect. + + +END + return; +} + &Apache::lonlocal::get_language_handle(); + &Apache::loncommon::content_type(undef,'text/html'); + + print(&Apache::loncommon::start_page('Creating PDF')); + + 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); + } + +print "Return to last resource.

"; + + my $figfile = $texfile; + $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/; + my $duefile = $texfile; + $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/; + #do we have figures? + # print "Figure file: $figfile\n"; + if (-e $figfile) { + # print "$figfile exists\n"; + 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('
'); + 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/; + $eps_f = '/home/httpd/prtspool/'.$eps_f; + } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\//) { + $eps_f=~m/$Apache::lonnet::perlvar{'lonDocRoot'}\/res\/(.+)/; + $eps_f = '/home/httpd/prtspool/'.$1; + } elsif ($eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\//) { + $eps_f=~/$Apache::lonnet::perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/; + $eps_f = '/home/httpd/prtspool/'.$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|; + $prettyname=~s|$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,$eps_f); + } + } + } + + } + } + if ($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 $ind=-1; +my %prog_state; +if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$number_of_files,'inline','80'); } +print "
"; +my $num_files = @texfile; +foreach $texfile (@texfile) { + my $status_statement=''; + my $link_text='download PDF'; + $ind++; + my @stud_info=split(/_END_/,$names_pack[$ind]); + my @tempo_array=split(/:/,$stud_info[0]); + my $name; + my $name_range=''; + if ($tempo_array[3]) { + $name=$tempo_array[3]; + ($name_range) = split(/,/,$name, 2); + } else { + $name=$tempo_array[0].'@'.$tempo_array[1]; + $name_range = $tempo_array[0]; + } + if (($name ne "") && ($name ne '@') ) { # Could be printing codes... + $link_text=''.$name.''; + $status_statement.=$name; + } + if ($#stud_info>0) { + @tempo_array=split(/:/,$stud_info[-1]); + if ($tempo_array[3]) { + $name=$tempo_array[3]; + my ($lastname) = split(/,/, $name,2); + $name_range .= "-".$lastname; + } else { + $name=$tempo_array[0].'@'.$tempo_array[1]; + $name_range .= '-'.$tempo_array[0]; + } + if (($name ne "") && ($name ne '@')) { + $link_text.=' - '.$name.''; + $status_statement.=' - '.$name; + + } + } + if(($num_files > 1) && ($link_text eq 'download PDF')) { # Printing codes + $link_text = ''.basename($texfile,'.tex').'.pdf'; + $status_statement .= basename($texfile); + } + $name_range =~ s/'//g; # O'Neil -> ONeil e.g. + print "
"; + if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); } + # This little piece of dirt puts username ranges into the original tex + # Tex filename from which they'll propagate into the other filenames as well. + # + if (-e $texfile) { + if (($name_range ne '') && ($num_files > 1)) { + my $newtexfile = $texfile; + $newtexfile =~ s/\.tex/$name_range\.tex/; + rename($texfile, $newtexfile); + $texfile = $newtexfile; + } + $texfile =~ m/^(.*)\/([^\/]+)$/; + my $name_file = $2; + my $path_file = $1.'/'; + chdir $path_file; + my $dvi_file= $name_file; $dvi_file =~ s/\.tex/$name_range\.dvi/; + &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null", + "for $status_statement now LaTeXing file", + \%prog_state,$dvi_file); + 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_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 $temporary_file 'LOGFILE
'.$body_log_file.'
'."\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 "
failing resourcename: $badresource
"; + } + } + + if ($advanced_role) { + #LaTeX failed to parse tex file + print "

LaTeX could not successfully parse your tex file.

"; + print "It probably has errors in it.
"; + print "With very high probability this error occured in ".$badtext."

"; + print "Here are the error messages in the LaTeX log file
";
+
+	      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 "
\n"; + # print "
Advanced role
"; + print "The link to "; + $logfilename=~s/\/home\/httpd//; + print "Your log file "; + 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 $tex_temporary_file 'LOGFILE
'.$body_tex_file.'
'."\n"; + print "

"; + print "The link to "; + $texfile=~s/\/home\/httpd//; + print "Your original LaTeX file "; + 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 "
There are errors in $badtext"; + print "
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 "
A message has been sent to the instructor describing this failure
"; + my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", "Help on printing"); + print ("$help_text"); + + } + + } elsif ($body_log_file=~m//) { + my $whereitbegins = index $body_log_file,''; + print "You are running LaTeX in batch mode."; + while ($whereitbegins != -1) { + my $tempobegin=$whereitbegins; + $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins; + my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins; + print "
It has found an error in".substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)."
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 $body_log_file,'',$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("makindex $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("
Missing fonts file is: $missfonts_file"); + if (-e $missfonts_file) { + #print("
Missing fonts file exists\n"); + &create_missing_fonts($missfonts_file); + &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

PDF output file (see link below)

\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; + 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($duefile); + print "Your PDF document"; + unlink($missfonts_file); + + } + if ($advanced_role) { + print "

"; + print "The link to "; + $logfilename=~s/\/home\/httpd//; + print "Your log file "; + 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 $tex_temporary_file 'LOGFILE
'.$body_tex_file.'
'."\n"; + print "

"; + print "The link to "; + $texfile=~s/\/home\/httpd//; + print "Your original LaTeX file "; + print "\n"; + } + + } else { + #LaTeX successfully parsed tex file + $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); + # + # 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("
Missing fonts file is: $missfonts_file"); + if (-e $missfonts_file) { + #print("
Missing fonts file exists\n"); + &create_missing_fonts($missfonts_file); + &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) { + my $latex_file = $name_file; + $latex_file =~ s/\.dvi/\.tex/; + &repaginate($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", + \%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); + + print "
"; + $new_name_file =~ m/^(.*)\./; + my $ps_file = my $tempo_file = $1.'temporar.ps'; + my $pdf_file = $1.'.pdf'; + $papera=~s/t/p/; + if ($laystyle eq 'album' and $numberofcolumns eq '2') { + $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') { + $comma = 'pstops '.$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; + } + my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice', + 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice', + 'executive'=>,'<< /PageSize [540 720] >> setpagedevice', + 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice', + 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice', + 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice', + 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice', + 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice', + }; + if ($paper ne 'letter') { + open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n"; + my $new_ps_file='new'.$ps_file; + open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n"; + print FFHS $addtoPSfile->{$paper}."\n"; + while () { + print FFHS $_; + } + close(FFH); + close(FFHS); + $ps_file=$new_ps_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/; + $texps =~ s/\.tex/\.ps/; + my @garb = ($texlog,$texaux,$texdvi,$texps); +# unlink @garb; + unlink($duefile); + print "$link_text - click here to download pdf"; + print "\n"; + } + unlink($missfonts_file); + + } + } else { + print "LaTeX file $texfile was not created successfully"; + } +} +print "
"; +if ($number_of_files>1) { + my $zipfile=$texfile[0]; + $zipfile=~s/\.tex/\.zip/; + my $statement="zip $zipfile"; + foreach my $file (@texfile) { + $file=~s/\.tex/.\pdf/; + $statement.=' '.$file; + } + print("
Zip Output:\n");
+    system($statement);
+    print("
"); + $zipfile=~s/\/home\/httpd//; + print "
A ZIP file of all the PDFs."; +} +if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); } +print(&Apache::loncommon::end_page()); +my $done; + +sub REAPER { + $done=1; +} + +sub busy_wait_command { + my ($command,$message,$progress_win,$output_file)=@_; + + $SIG{CHLD} = \&REAPER; + $done=0; + my $pid=open(CMD,"$command |"); + if ($advanced_role) { + &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message); + } + while(!$done) { + sleep 1; + my $extra_msg; + if ($output_file) { + my $size=(stat($output_file))[7]; + $extra_msg=", $size bytes generated"; + } + if ($advanced_role) { + &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win, + $message.$extra_msg); + } + } + $SIG{CHLD}='IGNORE'; + close(CMD); +} + +# Repagninate +# What we need to do: +# - Count the number of pages in each student. +# - Rewrite the latex file replacing the \specials that +# mark the end of student with an appropriate number of newlines. +# parameters: +# psfile - Postscript filename +# latexfile - LaTeX filename +# columns - number of columns. +sub repaginate { + + # We will try to do this in 2 passes through the postscript since + # the postscript is potentially large, to do 2 passes, the first pass + # must be able to calculate the total number of document pages so that + # at the beginning of the second pass we already know how to replace + # %%Pages: + + # Figure out + # 1. Number of pages in the document + # 2. Maximum number of pages in a student + # 3. Number of pages in each student. + + my ($postscript_filename, $latex_filename, $num_columns) = @_; + open(PSFILE, "<$postscript_filename"); + my $line; + my $total_pages; # Total pages in document. + my $seen_pages = 0; # There are several %%Pages only the first is useful + my @pages_in_student; # For each student his/her initial page count. + my $max_pages = 0; # Pages in 'longest' student. + my $page_number = 0; + &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state, + &mt("Counting pages for student: [_1]",1)); + + while ($line = ) { + + # Check for total pages (%%Pages:) + + if (($line =~ /^%%Pages:/) && (!$seen_pages)) { + my @pageinfo = split(/ /,$line); + $total_pages = $pageinfo[1]; + $seen_pages = 1; + } + # Check for %%Page: n m $page_number will be the + # biggest of these until we see an endofstudent. + # Note that minipages generate spurious %Page: 1 1's so + # we only are looking for the largest n (n is page number at the + # bottom of the page, m the page number within the document. + # + + if ($line =~ /^%%Page:/) { + my @pageinfo = split(/\s+/, $line); + if ($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]; + } + } + + + } + # 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; + } + $page_number = 0; + + close(PSFILE); + + # If 2 columns, max_pages must go to an even number of columns: + + + if ($num_columns == 2) { + if ($max_pages % 2) { + $max_pages++; + } + } + + # Now rewrite the LaTex file, substituting our \special + # with an appropriate number of \newpage directives. + + my $outfilename = $latex_filename."temp"; + + open(LATEXIN, "<$latex_filename"); + open(LATEXOUT, ">$outfilename"); + + + my $student_number = 0; # Index of student we're working on. + &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state, + "Repaginating student ".$student_number+1); + + while (my $line = ) { + if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") { + # only end of student stamp if next line is ENDOFSTUDENTSTAMP: + -print "Your PDF document\n"; -print "\n"; + # End of student replace with 0 or more newpages. + + my $addlines = $max_pages - $pages_in_student[$student_number]; + while($addlines) { + print LATEXOUT '\clearpage \strut \clearpage'; + $addlines--; + } + + $student_number++; + &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state, + "Repaginating student ".$student_number+1); + + } else { + print LATEXOUT $line; + } + } + + close(LATEXIN); + close(LATEXOUT); + rename($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("
Raw command: $command"); + $command =~ s/ 8000/ 600/g; # dpi directives. + $command =~ s/\/8000/\/600/g; # mag directives. + #print("
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("
before reassembly : (@cmdarray)"); + $command = join(" ", (@cmdarray)); + + #print("
Creating fonts via command: $command"); + &busy_wait_command("$command 1>/dev/null 2>/dev/null", + "Creating missing font", + $state, $command); + + } + +}