--- loncom/interface/lonmeta.pm 2000/11/28 02:49:10 1.5
+++ loncom/interface/lonmeta.pm 2004/05/07 17:17:58 1.77
@@ -1,104 +1,874 @@
# The LearningOnline Network with CAPA
-#
# Metadata display handler
#
-# (TeX Content Handler
+# $Id: lonmeta.pm,v 1.77 2004/05/07 17:17:58 matthew 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.
#
-# 05/29/00,05/30,10/11 Gerd Kortemeyer)
+# 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
#
-# 10/19,10/21,10/23,11/27 Gerd Kortemeyer
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+
package Apache::lonmeta;
use strict;
+use LONCAPA::lonmetadata();
use Apache::Constants qw(:common);
use Apache::lonnet();
+use Apache::loncommon();
+use Apache::lonhtmlcommon();
+use Apache::lonmsg;
+use Apache::lonpublisher;
+use Apache::lonlocal;
+use Apache::lonmysql;
+use Apache::lonmsg;
+
+
+# Fetch and evaluate dynamic metadata
+sub dynamicmeta {
+ my $url=&Apache::lonnet::declutter(shift);
+ $url=~s/\.meta$//;
+ my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
+ my $regexp=$url;
+ $regexp=~s/(\W)/\\$1/g;
+ $regexp='___'.$regexp.'___';
+ my %evaldata=&Apache::lonnet::dump('nohist_resevaldata',$adomain,
+ $aauthor,$regexp);
+ my %DynamicData = &LONCAPA::lonmetadata::process_reseval_data(\%evaldata);
+ my %Data = &LONCAPA::lonmetadata::process_dynamic_metadata($url,
+ \%DynamicData);
+ #
+ # Deal with 'count' separately
+ $Data{'count'} = &access_count($url,$aauthor,$adomain);
+ #
+ # Debugging code I will probably need later
+ if (0) {
+ &Apache::lonnet::logthis('Dynamic Metadata');
+ while(my($k,$v)=each(%Data)){
+ &Apache::lonnet::logthis(' "'.$k.'"=>"'.$v.'"');
+ }
+ &Apache::lonnet::logthis('-------------------');
+ }
+ return %Data;
+}
+
+sub access_count {
+ my ($src,$author,$adomain) = @_;
+ my %countdata=&Apache::lonnet::dump('nohist_accesscount',$adomain,
+ $author,$src);
+ if (! exists($countdata{$src})) {
+ return &mt('Not Available');
+ } else {
+ return $countdata{$src};
+ }
+}
+# Try to make an alt tag if there is none
+sub alttag {
+ my ($base,$src)=@_;
+ my $fullpath=&Apache::lonnet::hreflocation($base,$src);
+ my $alttag=&Apache::lonnet::metadata($fullpath,'title').' '.
+ &Apache::lonnet::metadata($fullpath,'subject').' '.
+ &Apache::lonnet::metadata($fullpath,'abstract');
+ $alttag=~s/\s+/ /gs;
+ $alttag=~s/\"//gs;
+ $alttag=~s/\'//gs;
+ $alttag=~s/\s+$//gs;
+ $alttag=~s/^\s+//gs;
+ if ($alttag) {
+ return $alttag;
+ } else {
+ return &mt('No information available');
+ }
+}
-# ================================================================ Main Handler
+# Author display
+sub authordisplay {
+ my ($aname,$adom)=@_;
+ return &Apache::loncommon::aboutmewrapper
+ (&Apache::loncommon::plainname($aname,$adom),
+ $aname,$adom,'preview').' ['.$aname.'@'.$adom.']';
+}
-sub handler {
- my $r=shift;
- my %content=();
+# Pretty display
+sub evalgraph {
+ my $value=shift;
+ if (! $value) {
+ return '';
+ }
+ my $val=int($value*10.+0.5)-10;
+ my $output='
';
+ if ($val>=20) {
+ $output.='  | ';
+ } else {
+ $output.=' | '.
+ ' | ';
+ }
+ $output.=' | ';
+ if ($val>20) {
+ $output.=' | '.
+ ' | ';
+ } else {
+ $output.='  | ';
+ }
+ $output.=' ('.sprintf("%5.2f",$value).') |
';
+ return $output;
+}
-# ----------------------------------------------------------- Set document type
+sub diffgraph {
+ my $value=shift;
+ if (! $value) {
+ return '';
+ }
+ my $val=int(40.0*$value+0.5);
+ my @colors=('#FF9933','#EEAA33','#DDBB33','#CCCC33',
+ '#BBDD33','#CCCC33','#DDBB33','#EEAA33');
+ my $output='';
+ for (my $i=0;$i<8;$i++) {
+ if ($val>$i*5) {
+ $output.=' | ';
+ } else {
+ $output.=' | ';
+ }
+ }
+ $output.=' ('.sprintf("%3.2f",$value).') |
';
+ return $output;
+}
- $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'));
-
-# --------------------------------------------------------------- Render Output
-
-my $creationdate=localtime($content{'creationdate'});
-my $lastrevisiondate=localtime($content{'lastrevisiondate'});
-
- $r->print(<Catalog Information
-
-Catalog Information
-$content{'title'}
-Author(s): $content{'author'}
-Subject: $content{'subject'}
-Keyword(s): $content{'keywords'}
-Notes: $content{'notes'}
-Abstract:
-$content{'abstract'}
-
-MIME Type: $content{'mime'}
-Language: $content{'language'}
-Creation Date: $creationdate
-Last Revision Date: $lastrevisiondate
-Publisher/Owner: $content{'owner'}
-Copyright/Distribution: $content{'copyright'}
-
-ENDHEAD
- delete($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 $name=$_;
- 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');
- $r->print(''.$display.': '.$content{$name});
- if ($otherinfo) {
- $r->print(' ('.$otherinfo.')');
- }
- $r->print("
\n");
- } sort keys %content;
- $r->print('