--- loncom/interface/printout.pl 2002/08/23 20:02:22 1.20
+++ loncom/interface/printout.pl 2024/11/09 16:08:15 1.177
@@ -1,120 +1,1326 @@
#!/usr/bin/perl
+# CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc.
+#
+# $Id: printout.pl,v 1.177 2024/11/09 16:08:15 raeburn 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 "<body bgcolor=\"#FFFFFF\">\n";
- my ($texfile,$laystyle,$numberofcolumns) = split(/&/,$ENV{'QUERY_STRING'});
- my $figfile = $texfile;
- $figfile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.dat/;
- my $duefile = $texfile;
- $duefile =~ s/^([^\.]+printout)[^t]+\.tex/$1\.due/;
- #do we have figures?
- 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/i;
- $_ = $eps_f;
- m/\/([^\/]+)$/;
- $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 ";}
- #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;
+use Apache::lonhtmlcommon();
+use Apache::lonnet;
+use Apache::loncommon();
+use Apache::lonlocal;
+use Apache::lonmsg();
+use LONCAPA::Enrollment;
+use LONCAPA::Configuration;
+use LONCAPA;
+use Archive::Zip qw( :ERROR_CODES );
+
+use strict;
+
+my $busy_wait_timeout = 30;
+my $pdfs_converted = 0; # non zero if PDF includes (need to fixps).
+
+my $debugging = 0;
+
+sub debug {
+ if ($debugging) {
+ my ($text) = @_;
+ print "$text <br />\n";
+ }
+}
+
+# Determine if a user is operating as a student for this course/domain.
+#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 "<br />-------------------<br />";
+ foreach my $key (sort (keys %env)) {
+ print "<br />$key -> $env{$key}";
+ }
+ print "<br />-------------------<br />";
+}
+
+#
+# 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:
+ &debug("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::lonmsg::decide_receiver(undef, 0,
+ 1,1,1);
+ &debug("sending...section: $env{'request.course.sec'}");
+ foreach my $dest (keys %receivers) {
+ &debug("dest is $dest");
+ my @destinfo = split(/:/,$dest);
+ my $user = $destinfo[0];
+ my $dom = $destinfo[1];
+
+ &Apache::lonmsg::user_normal_msg($user, $dom,
+ $subject, $message);
+
+ # No point in looking at the return status as there's no good
+ # error action I can think of right now (log maybe?).
+ }
+ }
+ }
+}
+
+sub get_pstops_offsets {
+ my ($paper) = @_;
+ my ($origwidth,$origheight,$origunits,$ptype,$xoff,$yoffl,$yoffr);
+ $ptype = "-p$paper";
+ if ($paper eq 'letter') {
+ $origwidth = 11.0;
+ $origheight = 8.5;
+ $origunits = 'in';
+ $xoff = $origheight - 0.9;
+ $yoffl = 0.0;
+ } elsif ($paper eq 'legal') {
+ $ptype = '';
+ $origwidth = 14.0;
+ $origheight = 8.5;
+ $origunits = 'in';
+ $xoff = $origheight - 3.0;
+ $yoffl = 0.5;
+ } elsif ($paper eq 'a4') {
+ $origwidth = 29.7;
+ $origheight = 21.0;
+ $origunits = 'cm';
+ $xoff = $origheight;
+ $yoffl = 0.7;
+ }
+ if (($origwidth ne '') && ($yoffl ne '')) {
+ $yoffr = $origwidth/2 + $yoffl;
+ }
+ return ($ptype,$xoff,$yoffl,$yoffr,$origunits);
+}
+
+$|=1;
+if (! &LONCAPA::loncgi::check_cookie_and_load_env()) {
+ print <<END;
+Content-type: text/html
+
+<html>
+<head><title>Bad Cookie</title></head>
+<body>
+Your cookie information is incorrect.
+</body>
+</html>
+END
+ exit;
+}
+
+my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')};
+&Apache::lonlocal::get_language_handle();
+&Apache::loncommon::content_type(undef,'text/html');
+$env{'request.noversionuri'} = '/cgi-bin/printout.pl';
+# Breadcrumbs
+#FIXME: Choose better/different breadcrumbs?!? Links?
+my $brcrum = [{'href' => '',
+ 'text' => 'Helper'}, #FIXME: Different origin possible than print out helper?
+ {'href' => '',
+ 'text' => 'Preparing Printout'},
+ {'href' => '',
+ 'text' => 'Creating PDF'}];
+print(&Apache::loncommon::start_page('Creating PDF',
+ undef,
+ {'bread_crumbs' => $brcrum,}));
+
+my $identifier = $ENV{'QUERY_STRING'};
+my $texfile = $env{'cgi.'.$identifier.'.file'};
+my $laystyle = $env{'cgi.'.$identifier.'.layout'};
+my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'};
+my $paper = $env{'cgi.'.$identifier.'.paper'};
+my $selectionmade = $env{'cgi.'.$identifier.'.selection'};
+my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'};
+my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'};
+my $advanced_role = $env{'cgi.'.$identifier.'.role'};
+my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1;
+my $student_names = $env{'cgi.'.$identifier.'.studentnames'};
+my $backref = &unescape($env{'cgi.'.$identifier.'.backref'});
+
+
+my @names_pack=();
+if ($student_names=~/_END_/) {
+ @names_pack=split(/_ENDPERSON_/,$student_names);
+}
+if ($backref) {
+ if ($backref =~ m{^(/uploaded/$LONCAPA::match_domain/$LONCAPA::match_courseid/default_\d+.page)}) {
+ $backref = $1;
+ }
+ print('<p>'.&mt("[_1]Return[_2] to resource.",
+ "<a href=\"$backref\"><b>","</b></a>").'</p>');
+ print('<p><a href="javascript:gopost(\'/adm/printout\',\''.$backref.'\');">'.
+ &mt("Change Printing Options").'</a></p>'."\n");
+}
+my $figfile = $texfile;
+$figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/;
+my $duefile = $texfile;
+$duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/;
+
+
+#-------------------------------------------------------------------------------------
+#
+# Each print may have associated with it a file that contains a set of figures
+# that need to be converted to .eps from whatever form they were in when included
+# in the resource. The name of the figure file is in $figfile. If it exists,
+# it contains the names of the files that need to be converted, one per line.
+#
+
+&debug("Figure file is $figfile");
+
+if (-e $figfile) {
+ &debug( "Figure file exists");
+ &debug("$figfile exists");
+ my %done_conversion;
+ my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n";
+ my @content_of_file = <$temporary_file>;
+ close $temporary_file;
+ my $noteps;
+ my %prog_state;
+ if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$#content_of_file); }
+ print('<br />');
+ foreach my $not_eps (@content_of_file) {
+ chomp($not_eps);
+ &debug( "Being asked to convert $not_eps");
+ if ($not_eps ne '') {
+ $not_eps=~s|\/\.\/|\/|g;
+ if (!$done_conversion{$not_eps}) { # Only convert multiple includes once.
+ &convert_figure($not_eps);
+ $done_conversion{$not_eps} = 1;
+ }
+ }
+ }
+ if ($advanced_role) {
+ &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state);
+ }
+ unlink($figfile);
+}
+# End of figure conversion section:
+#
+#--------------------------------------------------------------------------------------------
+#
+# Figure out which Tex files we need to process. If this is a large class e.g.
+# the instructor may have asked that the printout be by section, one section per file
+# in that case, the output tex fiels will be the base filename with 3 digit serial numbers
+# just prior to the .tex file type.
+# By the time this loop exits, @texfile is an array of the files to process.
+#
+
+my @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('',$number_of_files);
+}
+print "<br />";
+my $num_files = @texfile; # How does this differ from $number_of_files , can that be 0?
+
+
+
+
+foreach $texfile (@texfile) {
+ my $status_statement='';
+ my $link_text='download PDF';
+ $ind++;
+
+ #---------------------------------------------------------------------------------------
+ # This chunk of code
+ # determines the status message for the printout, and the download link text.
+ # If the print is for one or more students, both will contain the range of students
+ # covered by this file.
+ #
+
+ my @stud_info=split(/_END_/,$names_pack[$ind]);
+ my @tempo_array=split(/:/,$stud_info[0]); # username:domain:section:full name:...
+ my $name;
+ my $name_range='';
+
+ # $name -> Either user's full name or username:domain
+ # $name_range -> Either user's last name or username.
+
+ if ($tempo_array[3]) {
+ $name=$tempo_array[3];
+ $name =~ s{^\s+|\s+$}{}g;
+ if ($name =~ /,/) {
+ ($name_range) = split(/,/,$name, 2);
+ } elsif ($name =~ /\s/) {
+ $name_range = $name;
+ $name_range =~ s/\s+/_/;
+ } else {
+ $name_range = $name;
+ }
+ $name_range =~ s/[^\w\:\-]+//g;
+ } else {
+ $name=$tempo_array[0].':'.$tempo_array[1];
+ $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...
+ $link_text='<b>'.$name.'</b>';
+ $status_statement.=$name;
+ }
+
+ # Group of students being printed...
+ # $name_range -> first student's name - last student's name
+ #
+
+ if ($#stud_info>0) {
+ @tempo_array=split(/:/,$stud_info[-1]);
+ if ($tempo_array[3]) {
+ $name=$tempo_array[3];
+ $name =~ s{^\s+|\s+$}{}g;
+ my $lastname;
+ if ($name =~ /,/) {
+ ($lastname) = split(/,/, $name,2);
+ } elsif ($name =~ /\s/) {
+ $lastname = $name;
+ $lastname =~ s/\s+/_/;
+ } else {
+ $lastname = $name;
+ }
+ $name_range .= "-".$lastname;
+ $name_range =~ s/[^\w\:\-]+//g;
+ } else {
+ $name=$tempo_array[0].':'.$tempo_array[1];
+ $name_range .= '-'.$tempo_array[0];
+ }
+ if (($name ne "") && ($name ne ':')) {
+ $link_text.=' - <b>'.$name.'</b>';
+ $status_statement.=' - '.$name;
+
+ }
+ }
+
+ # $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>';
+ $status_statement .= basename($texfile);
+ }
+
+
+ #------------------------------------------------------------------------
+
+ $name_range =~ s/'//g; # O'Neil -> ONeil e.g.
+
+
+ print "<br/>";
+ if ($advanced_role) {
+ &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Creating PDF for: [_1]',$status_statement));
+ }
+
+ 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)) {
+ 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/;
+ &make_dvi_file($name_file,
+ $dvi_file,
+ $tableofcontents,
+ $tableofindex,
+ $status_statement,
+ \%prog_state,
+ $busy_wait_timeout);
+
+
+ #Do we have a latex error in the log file?
+
+
+ my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/;
+
+
+ if (&analyze_logfile($logfilename, $texfile, $advanced_role)) {
+
+
+ #LaTeX successfully parsed tex file
+ $name_file =~ s/\.tex/\.dvi/;
+ my $new_name_file = $name_file;
+ $new_name_file =~ s/\.dvi/\.ps/;
+# Explicitly include a switch for papertype, otherwise dvips will default
+# to whatever is listed first in config.ps (which in most cases is a4).
+ my $papera;
+ unless (($paper eq '') ||
+ (($laystyle eq 'album') && ($numberofcolumns eq '1'))) {
+ $papera='-t'.$paper;
+ }
+ my $extra_ps_header = $perlvar{'lonLib'} .'/includepsheader.ps';
+ my $comma = "dvips $papera -h $extra_ps_header -Ppdf -G0 -o $new_name_file";
+ &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
+ "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.
+ #
+
+ my $print_directory = dirname($name_file);
+ my $missfonts_file = $print_directory."/missfont.log";
+ #print("<br /> Missing fonts file is: $missfonts_file");
+ if (-e $missfonts_file) {
+ #print("<br />Missing fonts file exists\n");
+ &create_missing_fonts($missfonts_file,\%prog_state);
+ &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
+ "for $status_statement dvips generated missing fonts",
+ \%prog_state, $new_name_file);
+ }
+ if (-e $new_name_file) {
+ my $latex_file = $name_file;
+ $latex_file =~ s/\.dvi/\.tex/;
+ &repaginate($new_name_file, $latex_file, $numberofcolumns);
+
+ &make_dvi_file($latex_file,
+ $name_file,
+ $tableofcontents,
+ $tableofindex,
+ $status_statement,
+ \%prog_state,
+ $busy_wait_timeout);
+
+
+ &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null",
+ "for $status_statement dvips to repaginate",
+ \%prog_state, $new_name_file);
+
+ print "<br />";
+ $new_name_file =~ m/^(.*)\./;
+ my $ps_file = my $tempo_file = $1.'temporar.ps';
+ my $pdf_file = $1.'.pdf';
+ unless ($paper eq '') {
+ $papera='-p'.$paper;
+ }
+#----
+# The code below uses fixps to make pdf include in sequences work.
+#
+# $comma = "fixps --force $new_name_file";
+# &debug("FIXPS command: $comma");
+# &busy_wait_command("$comma 1>$tempo_file 2>/dev/null",
+# "for $status_statement now validating PS",
+# \%prog_state,$tempo_file);
+
+#---
+# The code below uses gs to make pdf includes in sequences work
+
+ # Use gs to fix the postscript -> level 1.5
+ # .. if pdfs were included
+ #
+ # pswrite device was removed from ghostscript 9.09 and later,
+ # (ps2write device is used instead).
+ # check which device is available, and use as the value
+ # passed via -sDEVICE= arg in gs call to fix the postscript.
+ #
+
+ if ($pdfs_converted > 0) {
+ my @possdevices = qw(ps2write pswrite);
+ my $device;
+ foreach my $poss (@possdevices) {
+ if (open(PIPE,"gs -h |grep ' $poss ' 2>&1 |")) {
+ my $output = <PIPE>;
+ close(PIPE);
+ chomp($output);
+ if ($output =~ /\Q $poss \E/) {
+ $device = $poss;
+ }
+ }
+ last if ($device ne '');
+ }
+ if ($device ne '') {
+ my ($major,$minor);
+ if (open(PIPE,"gs -v |grep 'GPL Ghostscript' 2>&1 |")) {
+ my $info = <PIPE>;
+ close(PIPE);
+ chomp($info);
+ if ($info =~ /Ghostscript\s+(\d+)\.(\d+)/) {
+ ($major,$minor) = ($1,$2);
+ }
+ }
+ $comma = "gs -sDEVICE=$device -dLanguageLevel=1.5 ";
+ if (($major > 9) || (($major == 9) && ($minor >= 50))) {
+ $comma .= '--permit-file-read=* ';
+ }
+ &busy_wait_command("$comma -o $tempo_file $new_name_file 2>/dev/null 1>/dev/null",
+ "for $status_statement now validating PS",
+ \%prog_state, $tempo_file);
+
+#---
+ if (-e $tempo_file) {
+ &busy_wait_command("mv $tempo_file $new_name_file",
+ 'File move', \%prog_state, $new_name_file);
+ }
+ }
+ }
+ if ($laystyle eq 'album' and $numberofcolumns eq '2') {
+ my $canscale;
+ if (open(PIPE,"psnup --version 2>&1 |")) {
+ while (<PIPE>) {
+ chomp();
+ next if (/pstops:\s+invalid\s+option/);
+ if (/^psnup\s+release\s+(\d+)\s+patchlevel\s+(\d+)/) {
+ if (($1 == 1) && ($2 < 90)) {
+ $canscale = 1;
+ }
+ last;
+ } elsif (/^psnup\s+(\d+)\.(\d+)/) {
+ if (($1 == 1) && ($2 < 90)) {
+ $canscale = 1;
+ }
+ last;
+ }
}
+ close(PIPE);
}
- }
+ if ($canscale) {
+ $comma = "psnup $papera -2 -s1.0 $new_name_file";
+ &debug("PSNUP command: $comma");
+ } elsif (($paper eq 'letter') || ($paper eq 'legal') || ($paper eq 'a4')) {
+ my ($ptype,$xoff,$yoffl,$yoffr,$units) = &get_pstops_offsets($paper);
+ $comma = "pstops $ptype '2:0L\@1.0($xoff$units,$yoffl$units)+1L\@1.0($xoff$units,$yoffr$units)' $new_name_file";
+ &debug("PSTOPS command: $comma");
+ } else {
+ $comma = "psnup $papera -2 $new_name_file";
+ &debug("PSNUP command: $comma");
+ }
+ &busy_wait_command("$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)" '.$new_name_file;
+ &debug("PSTOPS command: $comma ");
+ &busy_wait_command("$comma $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 $addtoPSfile={'letter'=>'<< /PageSize [612 792] >> setpagedevice',
+ 'legal'=>'<< /PageSize [612 1008] >> setpagedevice',
+ 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice',
+ 'executive'=>,'<< /PageSize [540 720] >> setpagedevice',
+ 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice',
+ 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice',
+ 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice',
+ 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice',
+ 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice',
+ };
+ open(FFH,'<',$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 (<FFH>) {
+ print FFHS $_;
+ }
+ close(FFH);
+ close(FFHS);
+ $ps_file=$new_ps_file;
+ &busy_wait_command("ps2pdf13 $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
+ '<p>'
+ .&mt('[_1] - [_2]Your PDF file[_3] is ready for download.',
+ $link_text,'<a href="/prtspool/'.$pdf_file.'">','</a>')
+ .'</p>'."\n";
}
- }
- unlink $figfile;
- }
- #print "$texfile\n"; #name of the tex file for debugging only
- $texfile =~ m/^(.*)\/([^\/]+)$/;
- my $name_file = $2;
- my $path_file = $1.'/';
- chdir $path_file;
- system("latex $name_file 1>/dev/null 2>/dev/null");
- #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 file for reading: $!\n";
- my @content_of_file = <$temporary_file>;
- close $temporary_file;
- my $body_log_file = join(' ',@content_of_file);
- if ($body_log_file=~m/!\s+Emergency stop/) {
- #LaTeX failed to parse tex file
- print "<h1>LaTeX could not successfully parse your tex file.</h1>";
- print "<h2>It probably has errors in it.</h2>";
- print "Here are the error messages in the LaTeX log file</br>";
- my $sygnal = 0;
- for (my $i=0;$i<=$#content_of_file;$i++) {
- if ($content_of_file[$i]=~m/^!/) {
- $sygnal = 1;
- }
- if ($content_of_file[$i]=~m/Here is how much of/) {
- $sygnal = 0;
- }
- if ($sygnal) {
- print "$content_of_file[$i]<br />";
- }
- }
+ unlink($missfonts_file);
+
+ }
} else {
- #LaTeX successfully parsed tex file
- $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");
- if (-e $new_name_file) {
- print "<h1>OUTPUT is in the PDF FILE (see link below)</h1>\n";
- $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' and $numberofcolumns eq '2') {
- $comma = 'pstops -pletter "2:0+1(0.5w,0)"';
- system("$comma $new_name_file $tempo_file");
- system("ps2pdf $tempo_file $name_file");
- } else {
- 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 $duefile;
- print "<a href=\"/prtspool/$name_file\">Your PDF document</a>";
- print "\n";
- }
+ print
+ '<p class="LC_error">'
+ .&mt('The LaTeX file [_1] was not created successfully.',
+ '<span class="LC_filename">'.$texfile.'</span>')
+ .'</p>';
}
+}
+if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); }
+print "<br />";
+if ($number_of_files>1) {
+ print('<p>'.&mt('Zip Output:')."\n");
+ my %zip_prog_state;
+ if ($advanced_role) { %zip_prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$number_of_files); }
+ my $zipfile=$texfile[0];
+ $zipfile=~s/\.tex/\.zip/;
+ my $zip = Archive::Zip->new();
+ my $counter = 0;
+ foreach my $file (@texfile) {
+ $file=~s/\.tex/.\pdf/;
+ my $dest=$file;
+ $dest=~s{^\Q$perlvar{'lonPrtDir'}\E}{prtspool};
+ $zip->addFile($file,$dest);
+ $dest=~s/^prtspool//;
+ $counter ++;
+ if ($advanced_role) {
+ &Apache::lonhtmlcommon::Update_PrgWin('',\%zip_prog_state,
+ &mt('[_1] added to zip archive ([_2] of [_3]',
+ $dest,$counter,$number_of_files));
+ }
+ }
+ if ($advanced_role) {
+ &Apache::lonhtmlcommon::Update_PrgWin('',\%zip_prog_state,&mt('Writing zip file'));
+ }
+ if ($zip->writeToFileNamed($zipfile) == AZ_OK) {
+ $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
+ print
+ '<p>'
+ .&mt('A [_1]ZIP file[_2] of all the PDF files is ready for download.',
+ '<a href="'.$zipfile.'">','</a>')
+ .'</p>';
+ } else {
+ print '<p class="LC_error">'.
+ &mt('An error occurred creating a ZIP file of all the PDF files').
+ '</p>';
+ }
+ if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%zip_prog_state); }
+}
+print(&Apache::loncommon::end_page());
+my $done;
+sub REAPER {
+ $done=1;
+}
+#
+# Execute a command updating the status window as the command's
+# output file builds up (at intervals of a second).
+#
+# If the timeout argument defined, then if that many seconds
+# elapses without an increase in the size of the output file,
+# the command will be killed (this deals with the case when
+# latex crawls into an infinite loop).
+#
+sub busy_wait_command {
+ my ($command,$message,$progress_win,$output_file, $timeout)=@_;
+
+ $SIG{CHLD} = \&REAPER;
+ $done=0;
+ my $pid=open(CMD,"$command |");
+ if ($advanced_role) {
+ &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message);
+ }
+ my $last_size = 0;
+ my $unchanged_time = 0;
+ while(!$done) {
+ sleep 1;
+ my $extra_msg;
+ if ($output_file) {
+ my $size=(stat($output_file))[7];
+ $extra_msg=", $size bytes generated";
+ if ($size == $last_size) {
+ $unchanged_time++;
+ if ($timeout && ($unchanged_time > $timeout)) {
+ print '<p class="LC_error">'.&mt('Operation timed out!')."</p>\n";
+ print "<p>Executing $command, the output file $output_file did not grow\n";
+ print "after $timeout seconds. This <em>may</em> indicate $command\n";
+ print "is in an infinite loop.\n";
+ print "See if printing fewer copies helps. Please contact LON-CAPA\n";
+ print "support about this in any event.";
+ print "</p>";
+ kill(9, $pid); # Reaper will do the rest...I hope there's errors in the log.
+ }
+ } else {
+ $last_size = $size;
+ $unchanged_time = 0;
+ }
+ }
+ if ($advanced_role) {
+ &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message.$extra_msg);
+ }
+ }
+ $SIG{CHLD}='IGNORE';
+ close(CMD);
+}
-
+# Make the dvi file (or rather try to), from the latex file and the
+# various bits and pieces that control how the latex file is processed:
+# LaTeX is run as many times a needed to make this all happen... this may
+# result in several runs of LaTeX that just are errors if the LaTeX is
+# bad, but the printing subsystem is _supposed_ to not do that.
+#
+# Parameters:
+# name_file - Name of the LaTeX file to process.
+# dvi_file - Name of resulting dvi file.
+# tableofcontents - "yes" if we are supposed to make a table of contents.
+# tableofindex - "yes" if we are suposed to make an index.
+# status_statement - Part of the status statement for ths status window.
+# prog_state - Reference to the program state hash.
+# busy_wait_timeout- Seconds without any progress that imply a problem.
+#
+#
+sub make_dvi_file {
+ my ($name_file,
+ $dvi_file,
+ $tableofcontents,
+ $tableofindex,
+ $status_statement,
+ $prog_state,
+ $busy_wait_timeout) = @_;
+
+
+ &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
+ "for $status_statement now LaTeXing file",
+ $prog_state,$dvi_file, $busy_wait_timeout);
+
+ # If the tableof contents was requested, we need to run
+ # LaTex a couple more times to get all the references sorted out.
+
+ if ($tableofcontents eq 'yes') {
+ &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
+ "for $status_statement First LaTeX of file for table of contents",
+ $prog_state,$dvi_file, $busy_wait_timeout);
+ &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
+ "for $status_statement Second LaTeX of file for table of contents",
+ $prog_state,$dvi_file,$busy_wait_timeout);
+ }
+
+ # And makeindex and another run of LaTeX to incorporate it if the index
+ # is enabled.
+
+
+ if ($tableofindex eq 'yes') {
+ my $idxname=$name_file;
+ $idxname=~s/\.tex$/\.idx/;
+ &busy_wait_command("makeindex $idxname",
+ "making index file",
+ $prog_state,$idxname);
+ &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null",
+ "for $status_statement now LaTeXing file for index section",
+ $prog_state,$dvi_file, $busy_wait_timeout);
+ }
+
+}
+
+
+# Repagninate
+# What we need to do:
+# - Count the number of pages in each student.
+# - Rewrite the latex file replacing the \specials that
+# mark the end of student with an appropriate number of newlines.
+# parameters:
+# psfile - Postscript filename
+# latexfile - LaTeX filename
+# columns - number of columns.
+sub repaginate {
+
+ # We will try to do this in 2 passes through the postscript since
+ # the postscript is potentially large, to do 2 passes, the first pass
+ # must be able to calculate the total number of document pages so that
+ # at the beginning of the second pass we already know how to replace
+ # %%Pages:
+
+ # Figure out
+ # 1. Number of pages in the document
+ # 2. Maximum number of pages in a student
+ # 3. Number of pages in each student.
+
+ my ($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 = <PSFILE>) {
+
+ # 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:\s+\d+\s+\d+/) {
+ 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 $student_number = 0; # Index of student we're working on.
+ &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1));
+
+ while (my $line = <LATEXIN>) {
+ if ($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--;
+ }
+
+ $student_number++;
+ &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$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("<br />Raw command: $command");
+ $command =~ s/ 8000/ 600/g; # dpi directives.
+ $command =~ s/\/8000/\/600/g; # mag directives.
+ #print("<br />After dpi replacements: $command");
+
+ my @cmdarray = split(/ /,$command);
+ for (my $i =0; $i < scalar(@cmdarray); $i++) {
+ if ($cmdarray[$i] eq '--mfmode') {
+ $cmdarray[$i+1] = "ljfour";
+ }
+ }
+ #print("<br /> before reassembly : (@cmdarray)");
+ $command = join(" ", (@cmdarray));
+
+ #print("<br />Creating fonts via command: $command");
+ &busy_wait_command("$command 1>/dev/null 2>/dev/null",
+ "Creating missing font",
+ $state);
+
+ }
+
+}
+#
+# Convert a figure file to encapsulated postscript:
+# At present, this is using a lot of file scoped globals to pass data around.
+# Parameters:
+# not_eps - The name of the file to convert which, presumably, is not
+# already an eps file.
+#
+sub convert_figure {
+ my ($not_eps) = @_;
+ &debug("in convert_figure");
+
+ my $status_statement='EPS picture for '.$not_eps;
+ my $eps_f = $not_eps;
+
+ if ($eps_f=~/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)\//) {
+ $eps_f=~s/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)/$1/;
+ } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) {
+ $eps_f=~ s/$perlvar{'lonDocRoot'}\/res\/(.+)/$1/;
+ } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) {
+ $eps_f=~ s/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/$1\/$2/;
+ }
+
+ $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
+
+ # Spaces are problematic for system commands and LaTeX, replace with _
+
+ $eps_f =~ s/ /\_/g;
+
+ #
+ # If the file is already an .eps or .ps file (eps_f still has the original
+ # file type),
+ # We really just need to copy it from where it was to prtspool
+ # but with the spaces substituted to _'s.
+ #
+ my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i);
+ if ($sext =~/ps$/i) {
+ &File::Path::mkpath($path,0,0777);
+ copy("$not_eps", "$eps_f");
+ } else {
+
+ $eps_f .= '.eps'; # Just append the eps ext.
+ my $path= &dirname($eps_f);
+ &File::Path::mkpath($path,0,0777);
+ $not_eps =~ s/^\s+//;
+ $not_eps =~ s/\s+$//;
+ my $prettyname=$not_eps;
+ if ($advanced_role) {
+ $prettyname=~s|$perlvar{'lonDocRoot'}/|/|;
+ &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Converting to EPS: [_1]',$prettyname));
+ }
+ #
+ # If the file is a PDF, need to use pdftops to convert it to a ps file.
+ # otherwise use imagemagik:
+ #
+ if($not_eps =~/\.(pdf|PDF)$/) {
+
+ #
+ # For whatever reason, pure postscript conversions have to be
+ # in the same dir as the base file:
+ #
+ $eps_f = &basename($eps_f);
+ $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f;
+
+ &debug("Converting pdf $not_eps to postscript: $eps_f");
+ my @args = ('pdftops',$not_eps,$eps_f);
+ system({$args[0]} @args); # Indirect object forces list processing mode.
+ # See perlfunc documentation for exec().
+ if ($? and $advanced_role) {
+ print '<p class="LC_warning">'
+ .&mt('An error occurred during the conversion of [_1] to postscript.',
+ '<span class="LC_filename">'.$prettyname.'</span>')
+ .'</p>';
+ } else {
+ $pdfs_converted++; # Need to fix ps in last pass.
+ }
+ } else {
+ my @args = ('convert',$not_eps,$eps_f);
+ system({$args[0]} @args); # Indirect object forces list processing mode.
+ # See perlfunc documentation for exec().
+ if ($? and $advanced_role) {
+ print '<p class="LC_warning">'
+ .&mt('An error occurred during the conversion of [_1].',
+ '<span class="LC_filename">'.$prettyname.'</span>')
+ .'<br />'
+ .&mt('If possible try to save this image using different settings and republish it.')
+ .'</p>';
+ }
+ }
+
+ if (not -e $eps_f) {
+ # converting an animated gif creates either:
+ # anim.gif.eps.0
+ # or
+ # anim.gif-0.eps
+ for (my $i=0;$i<10000;$i++) {
+ if (-e $eps_f.'.'.$i) {
+ rename($eps_f.'.'.$i, $eps_f);
+ last;
+ }
+ my $anim_eps = $eps_f;
+ $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i;
+ if (-e $anim_eps) {
+ rename($anim_eps, $eps_f);
+ last;
+ }
+ }
+ }
+
+ # imagemagick 6.2.0-6.2.7 fails to properly handle
+ # convert anim.gif anim.gif.eps
+ # it creates anim.eps instead.
+ if (not -e $eps_f) {
+ my $eps_f2 = $eps_f;
+ $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i;
+ if(-e $eps_f2) {
+ rename($eps_f2,$eps_f);
+ }
+ }
+ }
+
+}
+#
+# Analyze a LaTeX logfile producing appropriate output on error and
+# returning a boolean to let the caller know if, in our opinion, it's
+# worth continuing on to produce the PDF file.
+#
+# Parameters:
+# logfilename - Name of the logfile.
+# texfile - Name of the LaTeX file that was being processed.
+# advanced_role - True if the user is privileged with respect to the printout
+# (e.g. is the course coordinator or some such thing).
+# Returns:
+# 1 - Caller is advised to continue to create the PDF.
+# 0 - Caller need not bother creating the PDF.
+# Side Effects:
+# Messages are printed to describe any errors that have been encountered.
+# NOTE:
+# The current policy is to assume that if LaTeX decided to insert some text
+# it has salvaged the resource and the resource can be printed.. in that case
+# a message is emitted from this sub.
+#
+sub analyze_logfile {
+ my ($logfilename, $texfile, $advanced_role) = @_;
+
+ my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n";
+ my @content_of_file = <$temporary_file>;
+ close $temporary_file;
+ my $body_log_file = join(' ',@content_of_file);
+ $logfilename =~ s/\.log$/\.html/;
+ $temporary_file = IO::File->new('>'.$logfilename);
+ print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n";
+ if ($body_log_file=~m/!\s+Emergency stop/) {
+ my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART';
+ my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND';
+ my $badresource;
+ my $badtext;
+ if ($whereitbegins!=-1 and $whereitends!=-1) {
+ $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26);
+ $whereitbegins = rindex $badtext,'located in';
+ if ($whereitbegins != -1) {
+
+ $badresource = substr($badtext, $whereitbegins+27,
+ length($badtext) - $whereitbegins - 48);
+ # print "<br />failing resourcename: $badresource<br />";
+ }
+ }
+
+ # Guys with privileged roles get a more detailed error output:
+
+ if ($advanced_role) {
+ #LaTeX failed to parse tex file
+ print "<h2>".&mt('LaTeX could not successfully parse your TeX file.')."</h2>";
+ print &mt('It probably has errors in it.')."<br />";
+ if ($badtext) {
+ print &mt('With very high probability this error occurred in [_1].',$badtext)
+ ."<br /><br />";
+ }
+ print &mt('Here are the error messages in the LaTeX log file:')
+ ."<br /><pre>";
+
+ my $sygnal = 0;
+ for (my $i=0;$i<=$#content_of_file;$i++) {
+ if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) {
+ $sygnal = 1;
+ }
+ if ($content_of_file[$i]=~m/Here is how much of/) {
+ $sygnal = 0;
+ }
+ if ($sygnal) {
+ print "$content_of_file[$i]";
+ }
+ }
+ print "</pre>\n";
+ # print "<br /> Advanced role <br />";
+ $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
+ print "<b><big>"
+ .&mt('The link to [_1]Your log file[_2]','<a href="'.$logfilename.'">','</a>')
+ ."</big></b>\n";
+ #link to original LaTeX file
+ my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
+ my @tex_content_of_file = <$tex_temporary_file>;
+ close $tex_temporary_file;
+ my $body_tex_file = join(' ',@tex_content_of_file);
+ $texfile =~ s/\.tex$/aaaaa\.html/;
+ $tex_temporary_file = IO::File->new('>'.$texfile);
+ print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
+ print "<br /><br />";
+ $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
+ print "<b><big>"
+ .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>')
+ ."</big></b><br /><br />\n";
+ my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
+ print ("$help_text");
+
+ # Students on the other hand get a minimal error message, since they won't
+ # be able to correct the error message. A message is sent to the
+ # instructor:
+
+ } else { # Student role...
+ # at this point:
+ # $body_log_file - contains the log file.
+ # $name_file - is the name of the LaTeX file.
+ # $identifier - is the unique LaTeX identifier.l
+
+ print '<p class="LC_error">';
+ if ($badtext) {
+ print &mt('There are errors in [_1].',$badtext);
+ } else {
+ print &mt('There are errors.');
+ }
+ print '</p>'
+ .&mt('These errors prevent this resource from printing correctly.');
+
+ my $tex_handle = IO::File->new($texfile);
+ my @tex_contents = <$tex_handle>;
+ &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents);
+ print "<p>"
+ .&mt('A message has been sent to the instructor describing this failure.')
+ ."</p>";
+ my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing'));
+ print ("$help_text");
+
+ }
+ # Either way, an emergency stop does not allow us to continue so:
+ return 0;
+
+ # The branch of code below is taken if it appears that
+ # there was no emergency stop but LaTeX had to correct the
+ # input file to run.
+ # In that case we need to provide error feedback, as the correction >may< not be
+ # sufficient, we can let the game continue as there's a dvi file to process.
+ } elsif ($body_log_file=~m/<inserted text>/) {
+ my $whereitbegins = index $body_log_file,'<inserted text>';
+ print &mt('You are running LaTeX in [_1]batch mode[_2].','<b>','</b>');
+ while ($whereitbegins != -1) {
+ my $tempobegin=$whereitbegins;
+ $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins;
+ my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins;
+ print "<br />"
+ .&mt('It has found an error in [_1][_2]and corrected it.',substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26),"<br />")."\n";
+ print &mt('Usually this correction is valid but you probably need to check the indicated resource one more time and implement necessary corrections by yourself.')."\n";
+ $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10;
+ }
+ if ($advanced_role) {
+ print "<br /><br />";
+ $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
+ print "<b><big>"
+ .&mt('The link to [_1]Your log file[_2]'
+ ,'<a href="'.$logfilename.'">','</a>')
+ ."</big></b>\n";
+ #link to original LaTeX file
+ my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n";
+ my @tex_content_of_file = <$tex_temporary_file>;
+ close $tex_temporary_file;
+ my $body_tex_file = join(' ',@tex_content_of_file);
+ $texfile =~ s/\.tex$/aaaaa\.html/;
+ $tex_temporary_file = IO::File->new('>'.$texfile);
+ print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n";
+ print "<br /><br />";
+ $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool};
+ print "<b><big>"
+ .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>');
+ print "</big></b>\n";
+ }
+ return 1;
+ }
+ return 1; # NO log file issues at all.
+}