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File:  [LON-CAPA] / loncom / interface / lonprintout.pm
Revision 1.7: download - view: text, annotated - select for diffs
Mon Oct 15 14:50:10 2001 UTC (23 years, 1 month ago) by sakharuk
Branches: MAIN
CVS tags: HEAD
now prints sequences

# The LearningOnline Network
# Printout
#
# (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);
use Apache::lonxml;
use Apache::lonnet;
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>Printout:</h1><br></br>
ENDHEADER
}


sub menu_for_output {
    my $r = shift;
    $r->print(<<ENDMENUOUT);
<input type="hidden" name="phase" value="two">
<input type="radio" name="choice" value="Standard LaTeX output for current document">  Standard LaTeX output for current document<br></br>
<input type="radio" name="choice" value="Standard LaTeX output for the whole sequence">  Standard LaTeX output for the whole sequence<br></br>
<input type="submit" value="Please make a choice">
</form>
</body>
</html>
ENDMENUOUT
}


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 $result = '';
    my %mystyle;
    my $filename;

    if ($choice eq 'Standard LaTeX output for current document') {
	my $file=&Apache::lonnet::filelocation("",'/res/'.$ENV{'request.ambiguous'});
	my $filecontents=&Apache::lonnet::getfile($file);
	$result = &Apache::lonxml::xmlparse('tex',$filecontents,'',%mystyle);
    } elsif ($choice eq 'Standard LaTeX output for the whole sequence') {
	my @master_seq = ();
	my $keyword = 0;
	my $output_seq = '';
	my $current_file = '/res/'.$ENV{'request.ambiguous'};
        $current_file =~ s/(\/res\/physnet\/physnet)(\/m\d+)\/(.*)/$1$2$2\.sequence/;
	while ($current_file ne '') {
	    my $file=&Apache::lonnet::filelocation("",$current_file);
	    my $filecontents=&Apache::lonnet::getfile($file);
	    my @file_seq = &content_map($filecontents);
	    if (defined @file_seq) {
#-- adding an additional array to the master one
		if (defined @master_seq) {
                    my $old_value = $#master_seq;
		    my $total_value = $#master_seq + $#file_seq +2;
                    for (my $j=0; $j<=$old_value-$keyword+1; $j++) {
			$master_seq[$total_value-$j] = $master_seq[$old_value-$j];
		    }
                    for (my $j=0; $j<=$#file_seq; $j++){
			$master_seq[$keyword+$j] = $file_seq[$j];
		    }
		    @file_seq = ();
		    $keyword = 0;
		} else {
		    @master_seq = @file_seq;
                    @file_seq = ();
		}
	    } 
#-- checking wether .sequence file is among the set of files
	    $current_file = '';
	    for (my $i=0; $i<=$#file_seq; $i++) {
		$_ = $file_seq[$i];
		if (m/(.*)\.sequence/) {
		    $current_file = $_;
		    $keyword = $i;
		    last;
		}
	    }        
	}
#-- produce an output string
	for (my $i=0;$i<=$#master_seq;$i++) {
	    $_ = $master_seq[$i];
	    m/\"(.*)\"/;
	    if (index($1,'-tc.xml',0)==-1) {
		my $file=&Apache::lonnet::filelocation("",$1);
		my $filecontents=&Apache::lonnet::getfile($file);
		$output_seq .= $filecontents;
	    }
	}
#-- cleanup of output string (temporary cbi-specific)
	$output_seq =~ s/<physnet>//g;
	$output_seq =~ s/<\/physnet>//g;
	$output_seq = '<physnet>'.$output_seq.' </physnet>';
#-- final accord
	$result = &Apache::lonxml::xmlparse('tex',$output_seq,'',%mystyle);
    }
#-- writing .tex file in prtspool 
	{
	    my $temp_file;
	    $filename = "/home/httpd/prtspool/$ENV{'environment.firstname'}$ENV{'environment.lastname'}temp$ENV{'user.login.time'}.tex";
	    unless ($temp_file = Apache::File->new('>'.$filename)) {
		$r->log_error("Couldn't open $filename for output $!");
		return SERVER_ERROR; 
	    } 
		print $temp_file $result;
	}
$r->print(<<FINALEND);
<meta http-equiv="Refresh" content="0; url=http://bistromath.lite.msu.edu/cgi-bin/printout.pl?$filename">
</body>
</html>
FINALEND
}




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,'<link from="'.$1.'"',$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);
	$startlink = index($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__


#    my $ere;
#    foreach $ere (%ENV) {
#	$r->print(' SS '.$ere.' => '.$ENV{$ere}.' FF '."\n\n");
#    }
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