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File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.33: download - view: text, annotated - select for diffs
Fri Jun 21 19:52:13 2002 UTC (22 years, 4 months ago) by sakharuk
Branches: MAIN
CVS tags: HEAD
corrections for printing page - the whole table is divided onto small
tables (for each raw of the original table)

# The LearningOnline Network
# Printout
#
# $Id: lonprintout.pm,v 1.33 2002/06/21 19:52:13 sakharuk 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/
#
# (Internal Server Error Handler
#
# (Login Screen
# 5/21/99,5/22,5/25,5/26,5/31,6/2,6/10,7/12,7/14,
# 1/14/00,5/29,5/30,6/1,6/29,7/1,11/9 Gerd Kortemeyer)
#
# 3/1/1 Gerd Kortemeyer)
#
# 3/1 Gerd Kortemeyer
#
# 9/17 Alex Sakharuk
#
package Apache::lonprintout;

use strict;
use Apache::Constants qw(:common :http);
use Apache::lonxml;
use Apache::lonnet;
use Apache::inputtags;
use Apache::edit;
use Apache::File();



sub headerform {
    my $r = shift;
    $r->print(<<ENDHEADER);
<html>
<head>
<title>LON-CAPA output for printing</title>
</head>
<body bgcolor="FFFFFF">
<form method="post" enctype="multipart/form-data" action="/adm/printout" name="printform">
<h1>What do you want to print? Make a choice.</h1><br />
ENDHEADER
}


sub menu_for_output {
    my $r = shift;
    $r->print(<<ENDMENUOUT1);
<input type="hidden" name="phase" value="two">
<input type="hidden" name="url" value="$ENV{'form.postdata'}">
<input type="radio" name="choice" value="Standard LaTeX output for current document" checked>  Current document
(you will print what you see on the screen)<br />
<input type="radio" name="choice" value="Standard LaTeX output for the primary sequence">  All problems from the primary sequence<br />
<input type="radio" name="choice" value="Standard LaTeX output for whole primary sequence">  The whole primary sequence (problems plus all html and xml files)<br />
<input type="radio" name="choice" value="Standard LaTeX output for the top level sequence">  All problems from the top level sequence<br />
<br />
ENDMENUOUT1
    my $subdirtoprint = &Apache::lonnet::filelocation("",$ENV{'form.url'});
    $subdirtoprint =~ s/\/[^\/]+$//;
    if (&Apache::lonnet::allowed('bre',$subdirtoprint) eq 'F') {
	$r->print(<<ENDMENUOUT2);
<input type="radio" name="choice" value="Subdirectory print">  All problems from current subdirectory (where this particular problem is)<br />
ENDMENUOUT2
}
    $r->print(<<ENDMENUOUT3);
<br /><hr /><br />
<h1>And what page format do you prefer?</h1>
<input type="radio" name="layout" value="CBI"> Two columns landscape <br />
<input type="radio" name="layout" value="CAPA" checked>  Two columns portrait <br />
<input type="submit" value="Submit your choice">
</form>
</body>
</html>
ENDMENUOUT3
}




sub output_data {
    my $r = shift;
    $r->print(<<ENDPART);
<html>
<head>
<title>LON-CAPA output for printing</title>
</head>
<body bgcolor="FFFFFF">
<hr>
ENDPART

    my $choice = $ENV{'form.choice'};
    my $layout = $ENV{'form.layout'};
    my $laystyle = 'book';
    my $result = '';

    if ($choice eq 'Standard LaTeX output for current document') {
      my %moreenv;
      $moreenv{'form.grade_target'}='tex';
      $moreenv{'request.filename'}=$ENV{'form.url'};
      &Apache::lonnet::appenv(%moreenv);
      my $texversion=&Apache::lonnet::ssi($ENV{'form.url'});
      &Apache::lonnet::delenv('form.grade_target');
      $result .= $texversion;
      $result = &additional_cleanup($result);
      if ($ENV{'form.url'}=~m/\.page\s*$/) {$result = &page_cleanup($result);}
    } elsif ($choice eq 'Standard LaTeX output for the primary sequence' or $choice eq 'Standard LaTeX output for whole primary sequence') {
#-- where is the primary sequence containing file?
	my %moreenv;
	my $symbolic = &Apache::lonnet::symbread($ENV{'form.url'});
	$_ = $symbolic;
	m/([^_]+)_/;
	my $primary_sequence = '/res/'.$1;
#-- open and analyses the primary sequence
	my $sequence_file=&Apache::lonnet::filelocation("",$primary_sequence);
	my $sequencefilecontents=&Apache::lonnet::getfile($sequence_file);
	my @master_seq = &content_map($sequencefilecontents);
#-- produce an output string
	for (my $i=0;$i<=$#master_seq;$i++) {
	    $_ = $master_seq[$i];
	    m/\"(.*)\"/;
            $_ = $1;
            my $urlp = $1;
	    if ($choice eq 'Standard LaTeX output for the primary sequence') {
		if (/\.(problem|exam|quiz|assess|survey|form|library)/) {
		    my %moreenv;
		    $moreenv{'form.grade_target'}='tex';
		    &Apache::lonnet::appenv(%moreenv);
		    my $texversion=&Apache::lonnet::ssi($urlp);
		    &Apache::lonnet::delenv('form.grade_target');
		    $result .= $texversion;        
		}
	    } else {
		$moreenv{'form.grade_target'}='tex';
		&Apache::lonnet::appenv(%moreenv);
		my $texversion=&Apache::lonnet::ssi($urlp);
		&Apache::lonnet::delenv('form.grade_target');
		$result .= $texversion;    
	    }
	}	
	$result = &additional_cleanup($result);
    }  elsif ($choice eq 'Standard LaTeX output for the top level sequence') {
	my @master_seq = ();
	my @add_file_seq = ();
#-- where is the main sequence of the course?
	my $main_seq = '/res/'.$ENV{'request.course.uri'};
	my $file=&Apache::lonnet::filelocation("",$main_seq);
	my $filecontents=&Apache::lonnet::getfile($file);
	my @file_seq = &content_map($filecontents);
#-- do we have any other sequence inside?
	my $i=0;
	while ($i<=$#file_seq) {
	    $_ = $file_seq[$i];
	    if (/\.sequence$/) {
		$file = &Apache::lonnet::filelocation("",$file_seq[$i]);
		$filecontents=&Apache::lonnet::getfile($file);
		@add_file_seq = &content_map($filecontents);
		splice(@file_seq,$i,1,@add_file_seq);
		@add_file_seq = ();
		$i = -1;
	    }
	    $i++;
	}
	@master_seq = @file_seq;	
#-- produce an output string
	for (my $i=0;$i<=$#master_seq;$i++) {
	    $_ = $master_seq[$i];
	    m/\"(.*)\"/;
            $_ = $1;
            my $urlp = $1;
            if (/\.(problem|exam|quiz|assess|survey|form|library)/) {
		my %moreenv;
		$moreenv{'form.grade_target'}='tex';
		&Apache::lonnet::appenv(%moreenv);
		my $texversion=&Apache::lonnet::ssi($urlp);
		&Apache::lonnet::delenv('form.grade_target');
		$result .= $texversion;        
	    }
	}	    
	$result = &additional_cleanup($result);
    } elsif ($choice eq 'Subdirectory print') {      
	my $subdirtoprint = &Apache::lonnet::filelocation("",$ENV{'form.url'});
	$subdirtoprint =~ s/\/[^\/]+$//;
	my @list_of_files = ();
	my $localdirectory = $subdirtoprint;
	$localdirectory =~ s/.*(\/res\/)/$1/;
	my @content_directory = &Apache::lonnet::dirlist($localdirectory);
	for (my $iy=0;$iy<=$#content_directory;$iy++) {
	    my @tempo_array = split(/&/,$content_directory[$iy]);
	    $content_directory[$iy] = $tempo_array[0];
	    if ($content_directory[$iy] =~ m/^[^\.]+\.problem$/) {
		push @list_of_files,$content_directory[$iy];
	    }
	}
	$localdirectory =~ s/\/$//;
	for (my $i=0;$i<=$#list_of_files;$i++) {
	    my $urlp = $localdirectory.'/'.$list_of_files[$i];	     
	    my %moreenv;
	    $moreenv{'form.grade_target'}='tex';
	    &Apache::lonnet::appenv(%moreenv);
	    my $texversion=&Apache::lonnet::ssi($urlp);
	    &Apache::lonnet::delenv('form.grade_target');
	    $texversion =~ s/(\\begin{document})/$1 {\\tiny\\begin{verbatim}$urlp\\end{verbatim}}/;
	    $result .= $texversion;   
	}
	$result = &additional_cleanup($result);
	
	



	
    }
#-- corrections for the different page formats
    if ($layout eq 'CBI') {
	$result =~ s/\\begin{document}/\\setlength{\\oddsidemargin}{-40pt}\\setlength{\\evensidemargin}{-60pt}\\setlength{\\topmargin}{200pt}\\setlength{\\textwidth}{4\.4in}\\setlength{\\textheight}{6\.8in}\\setlength{\\parindent}{20pt}\\setlength{\\marginparwidth}{90pt}\\setlength{\\textfloatsep}{8pt plus 2\.0pt minus 4\.0pt} \\begin{document}/;
        $laystyle = 'album';
    } elsif ($layout eq 'CAPA') {
        my $courseidinfo = $ENV{'request.role'};
        $_ = $courseidinfo;
        m/.*\/(.*)/;
        $courseidinfo = $ENV{'course.physnet_'.$1.'.description'};
	$result =~ s/\\documentclass\[letterpaper\]{article}/\\documentclass\[twocolumn\]{article}/;
	$result =~ s/\\begin{document}/\\textheight 25\.9cm\\oddsidemargin = -0\.57in\\evensidemargin = -0\.57in\\textwidth= 7\.7in\\newlength{\\minipagewidth}\\setlength{\\minipagewidth}{\\textwidth\/2-0\.2in}\\renewcommand{\\ref}{\\keephidden\}\\begin{document}\\voffset=-1\.8cm\\setcounter{page}{1}\\noindent\\fbox{\\textbf{$ENV{'environment.firstname'} $ENV{'environment.lastname'}}}\\hskip 1\.4in $courseidinfo \\vskip 5 mm /;
	$result =~ s/\\includegraphics{/\\includegraphics\[width=9\.0 cm\]{/g;
	$result =~ s/(\\end{document})/\\newline\\noindent\\makebox\[9.0cm\]\[b\]{\\hrulefill}\\newline\\noindent\\tiny Dept\. of Physics and Astronomy, MSU\\makebox\[1.5cm\]\[b\]{\\hfill}LON-CAPA\\copyright MSU GNU\/GPL $1/;
    }
#-- LaTeX corrections     
    my $first_comment = index($result,'<!--',0);
    while ($first_comment != -1) {
	my $end_comment = index($result,'-->',$first_comment);
	substr($result,$first_comment,$end_comment-$first_comment+3) = '';
	$first_comment = index($result,'<!--',$first_comment);
    }
    $result =~ s/^\s+$//gm; #remove empty lines
    $result =~ s/%/\\%/g;   #corrects %
    $result =~ s/(\s)+/$1/g; #removes more than one empty space
    $result =~ s/\\\\\s*\\vskip/\\vskip/gm;
    $result =~ s/ (<|>|) / \$$1\$ /g; #corrects < or >
    $result =~ s/\\\\\s*\\noindent\s*(\\\\)+/\\\\\\noindent /g;
    $result =~ s/{\\par }\s*\\\\/\\\\/gm;
	$result =~ s/\\\\\s+\[/ \[/g;
    $result =~ s/&#952;/\$\\theta\$/g; #converts theta from html into tex
    $result =~ s/\b_+\b/\\makebox\[1 cm\]\[b\]{\\hrulefill}/g;
#-- writing .tex file in prtspool 
    my $temp_file;
    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout_".time."_".rand(10000000).".tex";
    unless ($temp_file = Apache::File->new('>'.$filename)) {
	$r->log_error("Couldn't open $filename for output $!");
	return SERVER_ERROR; 
    } 
    print $temp_file $result;
$r->print(<<FINALEND);
<meta http-equiv="Refresh" content="0; url=/cgi-bin/printout.pl?$filename&$laystyle">
</body>
</html>
FINALEND
}

sub additional_cleanup {
    my $result = shift;	
    my $first_app = index($result,'\documentclass',0);
    $first_app = index($result,'\documentclass',$first_app+5);
    while ($first_app != -1) {
	my $second_app = index($result,'begin{document}',$first_app);
	$first_app = rindex($result,'\end{document}',$first_app);
	substr($result,$first_app,$second_app-$first_app+15) = '\vskip 3 mm';
	$first_app = index($result,'\documentclass',$first_app+5);
    }
    return $result;
}
sub page_cleanup {
    my $result = shift;	
    $_ = $result;
    m/\\end{document}(\d*)$/;
    my $insert = '{';
    for (my $id=1;$id<=$1;$id++) { $insert .='l'; }
    $insert .= '}';
    $result =~ s/(\\begin{tabular})INSERT/$1$insert/g;
    $result =~ s/&\s*REMOVE\\\\/\\end{tabular}\\\\\\begin{tabular}$insert/g;
    return $result;
}

sub content_map {
#-- find a list of files to print
    my $map_string = shift;
    my @number_seq = ();
    my @file_seq = ();
    my $startlink = index($map_string,'<link',0);
    my $endlink = index($map_string,'</link>',$startlink);
    my $chunk = substr($map_string,$startlink,$endlink-$startlink+7);
    $_ = $chunk;
    m/from=\"(\d+)\"/;
    push @number_seq,$1;
    while ($startlink != -1) {
	$endlink = index($map_string,'</link>',$startlink);
	$chunk = substr($map_string,$startlink,$endlink-$startlink+7);
	substr($map_string,$startlink,$endlink-$startlink+7) = '';
	$_ = $chunk;
        m/to=\"(\d+)\"/;
	push @number_seq,$1;
	$startlink = index($map_string,'from="'.$1.'"',$startlink);
	$startlink = rindex($map_string,'<link ',$startlink);
    }
    my $stalink = index($map_string,' to="'.$number_seq[0].'"',$startlink);
    while ($stalink != -1) {
	$startlink = rindex($map_string,'<link ',$stalink);
	$endlink = index($map_string,'</link>',$startlink);
	$chunk = substr($map_string,$startlink,$endlink-$startlink+7);
	substr($map_string,$startlink,$endlink-$startlink+7) = '';
	$_ = $chunk;
        m/from=\"(\d+)\"/;
	unshift @number_seq,$1;
	$stalink = index($map_string,' to="'.$number_seq[0].'"',0);
    }
    for (my $i=0;$i<=$#number_seq;$i++) {
	$stalink = index($map_string,' id="'.$number_seq[$i].'"',0);
        {    
	    my $ahed1 = index($map_string,'src="',$stalink);
	    my $ahed2 = index($map_string,'</resource>',$stalink);
	    if ($ahed1 != -1) {
		if ($ahed1 < $ahed2) {
		    $startlink = $ahed1;
		} else {
		    $startlink = rindex($map_string,'src="',$stalink);
		}
	    } else {
		$startlink = rindex($map_string,'src="',$stalink);
	    }

	}
	$startlink = index($map_string,'"',$startlink);
	$endlink = index($map_string,'"',$startlink+1);
	$chunk = substr($map_string,$startlink,$endlink-$startlink+1);
	push @file_seq,$chunk;
    }
    return @file_seq;
}



sub handler {

    my $r = shift;
    $r->content_type('text/html');
    $r->send_http_header;

#-- start form
    &headerform($r);
#-- menu for output
    unless  ($ENV{'form.phase'}) {
	&menu_for_output($r);
    }
#-- core part 
    if ($ENV{'form.phase'} eq 'two') {
	&output_data($r);
    }
    return OK;

} 

1;
__END__




#### Test block
#    my $ere;
#    foreach $ere (%ENV) {
#	$result .= ' SS '.$ere.' => '.$ENV{$ere}.' FF '."\n\n";
#    }
####
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