[BACK]Return to lonmeta.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / interface
File:  [LON-CAPA] / loncom / interface / lonmeta.pm
Revision 1.2: download - view: text, annotated - select for diffs
Mon Oct 23 13:21:12 2000 UTC (23 years, 6 months ago) by www
Branches: MAIN
CVS tags: HEAD
Translates creation and revision date

# The LearningOnline Network with CAPA
#
# Metadata display handler
#
# (TeX Content Handler
#
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 10/19,10/21,10/23 Gerd Kortemeyer

package Apache::lonmeta;

use strict;
use Apache::File;
use Apache::Constants qw(:common);
use HTML::TokeParser;


# ================================================= Unpack metadata into a hash

sub unpackagemeta {
    my ($datastring,$fordisplay)=@_;
    my %content=();
    my $parser=HTML::TokeParser->new(\$datastring);
    my $token;
    while ($token=$parser->get_token) {
       if ($token->[0] eq 'S') {
	   my $entry=$token->[1];
           my $value=$parser->get_text('/'.$entry);
           if (($token->[2]->{'display'}) && ($fordisplay)) {
	       $value.='__dis__'.$token->[2]->{'display'};
           }
           $content{$entry}=$value;
       }
    }
    return %content;
}

# ================================================================ Main Handler

sub handler {
  my $r=shift;
  my @metacontents;
  my %content;

# ----------------------------------------------------------- Set document type

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

  return OK if $r->header_only;

# ------------------------------------------------------------------- Read file

  {
    my $fh=Apache::File->new($r->filename);
    @metacontents=<$fh>;
  }

  %content=&unpackagemeta(join("\n",@metacontents),1);

# --------------------------------------------------------------- Render Output

my $creationdate=localtime($content{'creationdate'});
my $lastrevisiondate=localtime($content{'lastrevisiondate'});
  
  $r->print(<<ENDHEAD);
<html><head><title>Catalog Information</title></head>
<body bgcolor="#FFFFFF">
<h1>Catalog Information</h1>
<h2>$content{'title'}</h2>
<h3>Author(s): $content{'author'}</h3>
<b>Subject:</b> $content{'subject'}<br>
<b>Keyword(s):</b> $content{'keywords'}<br>
<b>Notes:</b> $content{'notes'}<br>
<b>Abstract:</b>
<blockquote>$content{'abstract'}</blockquote>
<hr>
<b>MIME Type:</b> $content{'mime'}<br>
<b>Language:</b> $content{'language'}<br>
<b>Creation Date:</b> $creationdate<br>
<b>Last Revision Date:</b> $lastrevisiondate<br>
<b>Publisher/Owner:</b> $content{'owner'}<br>
<b>Copyright/Distribution:</b> $content{'copyright'}
<hr>
ENDHEAD
  delete($content{'title'});
  delete($content{'author'});
  delete($content{'subject'});
  delete($content{'keywords'});
  delete($content{'notes'});
  delete($content{'abstract'});
  delete($content{'mime'});
  delete($content{'language'});
  delete($content{'creationdate'});
  delete($content{'lastrevisiondate'});
  delete($content{'owner'});
  delete($content{'copyright'});
  map {
      my ($value,$name)=split(/\_\_dis\_\_/,$content{$_});
      unless ($name) { $name=$_; }
      $r->print('<b>'.$name.':</b> '.$value.'<br>');
  } sort keys %content;
  $r->print('</body></html>');
  return OK;
}

1;
__END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>