--- loncom/interface/printout.pl 2005/07/25 10:43:29 1.87 +++ loncom/interface/printout.pl 2007/09/21 20:56:30 1.126 @@ -1,6 +1,7 @@ #!/usr/bin/perl # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc. # +# $Id: printout.pl,v 1.126 2007/09/21 20:56:30 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -28,31 +29,29 @@ use lib '/home/httpd/lib/perl'; use LONCAPA::loncgi; use File::Path; +use File::Basename; +use File::Copy; use IO::File; use Image::Magick; -use Apache::lonhtmlcommon; +use Apache::lonhtmlcommon(); use Apache::lonnet; -use Apache::loncommon; +use Apache::loncommon(); use Apache::lonlocal; -use Apache::lonmsg; +use Apache::lonmsg(); use LONCAPA::Enrollment; +use LONCAPA::Configuration; use strict; -# # Determine if a user is operating as a student for this course/domain. -# -# #Parameters: -# course - The course id. -# cdom - The course domain. -# +# none #Implicit: # $env{request.role} contains the role under which this user operated this # this request. sub is_student { - return (! $env{'request.role.adv'}); + return ($env{'request.role'}=~/^st\./); } # @@ -111,7 +110,7 @@ sub send_error_mail { # The user is a student in the course: # - if (&is_student( $courseid, $coursedom)) { + if (&is_student()) { # build the subject and message body: # print "sending message to course coordinators.
"; @@ -120,7 +119,9 @@ sub send_error_mail { 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"; - $message .= " $resources\n"; + foreach my $resource (split(/:/,$resources)) { + $message .= " $resource\n"; + } $message .= "--------------------LaTeX logfile:------------ \n"; $message .= $logfile; $message .= "-----------------LaTeX source file: ------------\n"; @@ -128,8 +129,8 @@ sub send_error_mail { foreach my $line (@$texfile) { $message .= "$line\n"; } - my (undef, %receivers) = &Apache::lonfeedback::decide_receiver(undef, 0, - 1,1,1); + my (undef, %receivers) = &Apache::lonmsg::decide_receiver(undef, 0, + 1,1,1); # print "
sending...section: $env{'request.course.sec'}"; foreach my $dest (keys %receivers) { # print "
dest is $dest"; @@ -161,10 +162,12 @@ Your cookie information is incorrect. END return; } + +my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')}; &Apache::lonlocal::get_language_handle(); &Apache::loncommon::content_type(undef,'text/html'); - my $bodytag=&Apache::loncommon::bodytag('Creating PDF','',''); - print $bodytag; + + print(&Apache::loncommon::start_page('Creating PDF')); my $identifier = $ENV{'QUERY_STRING'}; my $texfile = $env{'cgi.'.$identifier.'.file'}; @@ -179,18 +182,18 @@ END my $student_names = $env{'cgi.'.$identifier.'.studentnames'}; my $backref = &Apache::lonnet::unescape($env{'cgi.'.$identifier.'.backref'}); - - my $adv = $env{'request.role.adv'}; my @names_pack=(); if ($student_names=~/_END_/) { @names_pack=split(/_ENDPERSON_/,$student_names); } +print "Return to last resource.

"; + my $figfile = $texfile; - $figfile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.dat/; + $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/; my $duefile = $texfile; - $duefile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.due/; + $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/; #do we have figures? # print "Figure file: $figfile\n"; if (-e $figfile) { @@ -201,57 +204,100 @@ END close $temporary_file; my $noteps; my %prog_state; - if ($adv) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Coverting Images to EPS','Picture Conversion Status',$#content_of_file,'inline','80'); } + if ($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. + # 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; - $eps_f .= '.eps'; # Just append the eps ext. if ($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 = $perlvar{'lonPrtDir'}.'/'.$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. - 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{$not_eps})) { next; } - if ($adv) { - 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) { - for (my $i=0;$i<10000;$i++) { - if (-e $eps_f.'.'.$i) { - rename $eps_f.'.'.$i, $eps_f; - last; + # + # If the file is already an .eps or .ps file, + # We really just need to copy it from where it was to prtspool + # but with the spaces substituted to _'s. + # + my ($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,$eps_f); + } + } + } + } } - if ($adv) { + if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); } unlink($figfile); @@ -270,9 +316,9 @@ END my $ind=-1; my %prog_state; -print "Return to last resource.

"; -if ($adv) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('','Print Status','Class Print Status',$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 "
"; +my $num_files = @texfile; foreach $texfile (@texfile) { my $status_statement=''; my $link_text='download PDF'; @@ -280,36 +326,65 @@ foreach $texfile (@texfile) { my @stud_info=split(/_END_/,$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; } - $link_text=''.$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; + } - $link_text.=' - '.$name.''; - $status_statement.=' - '.$name; - } - if ($adv) { &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,'Creating PDF for '.$status_statement); } + } + 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/\.dvi/; + 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 now LaTeXing file for table of contents", + "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; @@ -353,6 +428,7 @@ foreach $texfile (@texfile) { print "It probably has errors in it.
"; print "With very high probability this error occured in ".$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/^!/) {
@@ -368,7 +444,7 @@ foreach $texfile (@texfile) {
 	      print "
\n"; # print "
Advanced role
"; print "The link to "; - $logfilename=~s/\/home\/httpd//; + $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; print "Your log file "; print "\n"; #link tooriginal LaTeX file (included according Michael Hamlin desire) @@ -381,9 +457,12 @@ foreach $texfile (@texfile) { print $tex_temporary_file 'LOGFILE
'.$body_tex_file.'
'."\n"; print "

"; print "The link to "; - $texfile=~s/\/home\/httpd//; + $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; 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. @@ -395,7 +474,10 @@ foreach $texfile (@texfile) { 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
" + 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//) { @@ -420,7 +502,74 @@ foreach $texfile (@texfile) { "for $status_statement now Converting to PS", \%prog_state,$new_name_file); if (-e $new_name_file) { - print "

PDF output file (see link below)

\n"; + 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("
Missing fonts file is: $missfonts_file"); + if (-e $missfonts_file) { + #print("
Missing fonts file exists\n"); + &create_missing_fonts($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

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'; @@ -458,13 +607,15 @@ foreach $texfile (@texfile) { $texps =~ s/\.tex/\.ps/; my @garb = ($texaux,$texdvi,$texps); # unlink @garb; - unlink $duefile; + unlink($duefile); print "Your PDF document"; + unlink($missfonts_file); + } if ($advanced_role) { print "

"; print "The link to "; - $logfilename=~s/\/home\/httpd//; + $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; print "Your log file "; print "\n"; #link tooriginal LaTeX file (included according Michael Hamlin desire) @@ -477,10 +628,11 @@ foreach $texfile (@texfile) { print $tex_temporary_file 'LOGFILE
'.$body_tex_file.'
'."\n"; print "

"; print "The link to "; - $texfile=~s/\/home\/httpd//; + $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; print "Your original LaTeX file "; print "\n"; } + } else { #LaTeX successfully parsed tex file $name_file =~ s/\.tex/\.dvi/; @@ -493,7 +645,68 @@ foreach $texfile (@texfile) { &busy_wait_command("$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,\%prog_state); + &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null", + "for $status_statement dvips generated missing fonts", + \%prog_state, $new_name_file); + } if (-e $new_name_file) { + 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'; @@ -547,10 +760,12 @@ foreach $texfile (@texfile) { $texps =~ s/\.tex/\.ps/; my @garb = ($texlog,$texaux,$texdvi,$texps); # unlink @garb; - unlink $duefile; + unlink($duefile); print "$link_text - click here to download pdf"; print "\n"; } + unlink($missfonts_file); + } } else { print "LaTeX file $texfile was not created successfully"; @@ -568,12 +783,13 @@ if ($number_of_files>1) { print("
Zip Output:\n");
     system($statement);
     print("
"); - $zipfile=~s/\/home\/httpd//; + $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; print "
A ZIP file of all the PDFs."; } -if ($adv) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); } - +if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); } +print(&Apache::loncommon::end_page()); my $done; + sub REAPER { $done=1; } @@ -584,7 +800,7 @@ sub busy_wait_command { $SIG{CHLD} = \&REAPER; $done=0; my $pid=open(CMD,"$command |"); - if ($adv) { + if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message); } while(!$done) { @@ -594,7 +810,7 @@ sub busy_wait_command { my $size=(stat($output_file))[7]; $extra_msg=", $size bytes generated"; } - if ($adv) { + if ($advanced_role) { &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win, $message.$extra_msg); } @@ -603,6 +819,189 @@ sub busy_wait_command { 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: + + + # 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); + + } + +}