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File:  [LON-CAPA] / loncom / interface / lonmeta.pm
Revision 1.7: download - view: text, annotated - select for diffs
Fri Aug 10 17:20:19 2001 UTC (22 years, 10 months ago) by www
Branches: MAIN
CVS tags: stable_2001_fall, HEAD
Only advanced users can see certain stuff.

# The LearningOnline Network with CAPA
#
# Metadata display handler
#
# (TeX Content Handler
#
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 10/19,10/21,10/23,11/27,08/09/01 Gerd Kortemeyer

package Apache::lonmeta;

use strict;
use Apache::Constants qw(:common);
use Apache::lonnet();


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

sub handler {
  my $r=shift;
  my %content=();

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

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

  return OK if $r->header_only;

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

  my $uri=$r->uri;
  map {
      $content{$_}=&Apache::lonnet::metadata($uri,$_);
  } split(/\,/,&Apache::lonnet::metadata($uri,'keys'));

# ------------------------------------------------------------------ Hide stuff

  unless ($ENV{'user.adv'}) {
      map {
          $content{$_}='<i>- not displayed -</i>';
      } ('keywords','notes','abstract','subject');
  }

# --------------------------------------------------------------- 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($content{'copyright'});
  if ($ENV{'user.adv'}) {
   map {
      my $name=$_;
      my $display=&Apache::lonnet::metadata($uri,$name.'.display');
      unless ($display) { $display=$name; };
      my $otherinfo='';
      map {
          if (defined(&Apache::lonnet::metadata($uri,$name.'.'.$_))) {
             $otherinfo.=' '.$_.'='.
		 &Apache::lonnet::metadata($uri,$name.'.'.$_).'; ';
          }
      } ('name','part','type','default'); 
      $r->print('<b>'.$display.':</b> '.$content{$name});
      if ($otherinfo) {
         $r->print(' ('.$otherinfo.')');
      }
      $r->print("<br>\n");
   } sort keys %content;
  }
  $r->print('</body></html>');
  return OK;
}

1;
__END__
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