File:
[LON-CAPA] /
loncom /
interface /
lonmeta.pm
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1.27:
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Fri Mar 14 02:26:12 2003 UTC (22 years, 2 months ago) by
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Towards bugs #662 - add customized rights of use (multiple domains,
specific courses, etc).
* Adds new extension ".rights" and handler lonrights.pm for editing and
viewing (not implemented yet)
* Adds new "copyright" metadata value "custom"
* Adds new metadata-field "customdistributionfile" to ".rights" file
(active only if copyright=custom)
* Author can cover large number of resources by one ".rights" file -
if distribution changes, only that one files needs republishing (like
a ".library" file)
# The LearningOnline Network with CAPA
# Metadata display handler
#
# $Id: lonmeta.pm,v 1.27 2003/03/14 02:26:12 www 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/
#
# (TeX Content Handler
#
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 10/19,10/21,10/23,11/27,08/09/01,12/22,12/24,12/25 Gerd Kortemeyer
package Apache::lonmeta;
use strict;
use Apache::Constants qw(:common);
use Apache::lonnet();
use Apache::loncommon();
use Apache::lonmsg;
use Apache::lonpublisher;
# ----------------------------------------- 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 %sum;
my %cnt;
my %listitems=('count' => 'add',
'course' => 'add',
'avetries' => 'avg',
'stdno' => 'add',
'difficulty' => 'avg',
'clear' => 'avg',
'technical' => 'avg',
'helpful' => 'avg',
'correct' => 'avg',
'depth' => 'avg',
'comments' => 'app',
'usage' => 'cnt'
);
foreach (keys %evaldata) {
$_=~/___(\w+)$/;
if (defined($cnt{$1})) { $cnt{$1}++; } else { $cnt{$1}=1; }
unless ($listitems{$1} eq 'app') {
if (defined($sum{$1})) {
$sum{$1}+=$evaldata{$_};
} else {
$sum{$1}=$evaldata{$_};
}
} else {
if (defined($sum{$1})) {
if ($evaldata{$_}) {
$sum{$1}.='<hr>'.$evaldata{$_};
}
} else {
$sum{$1}=''.$evaldata{$_};
}
}
}
my %returnhash=();
foreach (keys %cnt) {
if ($listitems{$_} eq 'avg') {
$returnhash{$_}=int(($sum{$_}/$cnt{$_})*100.0+0.5)/100.0;
} elsif ($listitems{$_} eq 'cnt') {
$returnhash{$_}=$cnt{$_};
} else {
$returnhash{$_}=$sum{$_};
}
}
return %returnhash;
}
# ------------------------------------- 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 'No information available'; }
}
# -------------------------------------------------------------- Pretty display
sub evalgraph {
my $value=shift;
unless ($value) { return ''; }
my $val=int($value*10.+0.5)-10;
my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
if ($val>=20) {
$output.='<td width=20 bgcolor="#555555">  </td>';
} else {
$output.='<td width='.($val).' bgcolor="#555555"> </td>'.
'<td width='.(20-$val).' bgcolor="#FF3333"> </td>';
}
$output.='<td bgcolor="#FFFF33"> </td>';
if ($val>20) {
$output.='<td width='.($val-20).' bgcolor="#33FF33"> </td>'.
'<td width='.(40-$val).' bgcolor="#555555"> </td>';
} else {
$output.='<td width=20 bgcolor="#555555">  </td>';
}
$output.='<td> ('.$value.') </td></tr></table>';
return $output;
}
sub diffgraph {
my $value=shift;
unless ($value) { return ''; }
my $val=int(40.0*$value+0.5);
my @colors=('#FF9933','#EEAA33','#DDBB33','#CCCC33',
'#BBDD33','#CCCC33','#DDBB33','#EEAA33');
my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
for (my $i=0;$i<8;$i++) {
if ($val>$i*5) {
$output.='<td width=5 bgcolor="'.$colors[$i].'"> </td>';
} else {
$output.='<td width=5 bgcolor="#555555"> </td>';
}
}
$output.='<td> ('.$value.') </td></tr></table>';
return $output;
}
# ================================================================ Main Handler
sub handler {
my $r=shift;
my $loaderror=&Apache::lonnet::overloaderror($r);
if ($loaderror) { return $loaderror; }
my $uri=$r->uri;
unless ($uri=~/^\/\~/) {
# =========================================== This is not in construction space
my ($resdomain,$resuser)=
(&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//);
$loaderror=
&Apache::lonnet::overloaderror($r,
&Apache::lonnet::homeserver($resuser,$resdomain));
if ($loaderror) { return $loaderror; }
my %content=();
# ----------------------------------------------------------- Set document type
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
# ------------------------------------------------------------------- Read file
foreach (split(/\,/,&Apache::lonnet::metadata($uri,'keys'))) {
$content{$_}=&Apache::lonnet::metadata($uri,$_);
}
# ------------------------------------------------------------------ Hide stuff
unless ($ENV{'user.adv'}) {
foreach ('keywords','notes','abstract','subject') {
$content{$_}='<i>- not displayed -</i>';
}
}
# --------------------------------------------------------------- Render Output
my ($thisversion)=($uri=~/\.(\d+)\.(\w+)\.meta$/);
my $creationdate=localtime(
&Apache::loncommon::unsqltime($content{'creationdate'}));
my $lastrevisiondate=localtime(
&Apache::loncommon::unsqltime($content{'lastrevisiondate'}));
my $language=&Apache::loncommon::languagedescription($content{'language'});
my $mime=&Apache::loncommon::filedescription($content{'mime'});
my $disuri=&Apache::lonnet::declutter($uri);
$disuri=~s/\.meta$//;
my $currentversion=&Apache::lonnet::getversion($disuri);
my $versiondisplay='';
if ($thisversion) {
$versiondisplay='Version: '.$thisversion.
' (most recent version: '.$currentversion.')';
} else {
$versiondisplay='Version: '.$currentversion;
}
my $bodytag=&Apache::loncommon::bodytag
('Catalog Information','','','',$resdomain);
$r->print(<<ENDHEAD);
<html><head><title>Catalog Information</title></head>
$bodytag
<h2>$content{'title'}</h2>
<h3><tt>$disuri</tt></h3>
$versiondisplay<br />
<table cellspacing=2 border=0>
<tr><td bgcolor='#AAAAAA'>Author(s)</td>
<td bgcolor="#CCCCCC">$content{'author'} </td></tr>
<tr><td bgcolor='#AAAAAA'>Subject</td>
<td bgcolor="#CCCCCC">$content{'subject'} </td></tr>
<tr><td bgcolor='#AAAAAA'>Keyword(s)</td>
<td bgcolor="#CCCCCC">$content{'keywords'} </td></tr>
<tr><td bgcolor='#AAAAAA'>Notes</td>
<td bgcolor="#CCCCCC">$content{'notes'} </td></tr>
<tr><td bgcolor='#AAAAAA'>Abstract</td>
<td bgcolor="#CCCCCC">$content{'abstract'} </td></tr>
<tr><td bgcolor='#AAAAAA'>MIME Type</td>
<td bgcolor="#CCCCCC">$mime ($content{'mime'}) </td></tr>
<tr><td bgcolor='#AAAAAA'>Language</td>
<td bgcolor="#CCCCCC">$language </td></tr>
<tr><td bgcolor='#AAAAAA'>Creation Date</td>
<td bgcolor="#CCCCCC">$creationdate </td></tr>
<tr><td bgcolor='#AAAAAA'>
Last Revision Date</td><td bgcolor="#CCCCCC">$lastrevisiondate </td></tr>
<tr><td bgcolor='#AAAAAA'>Publisher/Owner</td>
<td bgcolor="#CCCCCC">$content{'owner'} </td></tr>
<tr><td bgcolor='#AAAAAA'>Copyright/Distribution</td>
<td bgcolor="#CCCCCC">$content{'copyright'}
</table>
ENDHEAD
delete($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'}) {
# ------------------------------------------------------------ Dynamic Metadata
$r->print(
'<h3>Dynamic Metadata (updated periodically)</h3>Processing ...<br>');
$r->rflush();
my %items=(
'count' => 'Network-wide number of accesses (hits)',
'course' => 'Network-wide number of courses using resource',
'usage' => 'Number of resources using or importing resource',
'clear' => 'Material presented in clear way',
'depth' => 'Material covered with sufficient depth',
'helpful' => 'Material is helpful',
'correct' => 'Material appears to be correct',
'technical' => 'Resource is technically correct',
'avetries' => 'Average number of tries till solved',
'stdno' => 'Total number of students who have worked on this problem',
'difficulty' => 'Degree of difficulty');
my %dynmeta=&dynamicmeta($uri);
$r->print(
'</table><h4>Access and Usage Statistics</h4><table cellspacing=2 border=0>');
foreach ('count','usage','course') {
$r->print(
'<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
$dynmeta{$_}." </td></tr>\n");
}
$r->print('</table>');
if ($uri=~/\.(problem|exam|quiz|assess|survey|form)\.meta$/) {
$r->print(
'<h4>Assessment Statistical Data</h4><table cellspacing=2 border=0>');
foreach ('stdno','avetries') {
$r->print(
'<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
$dynmeta{$_}." </td></tr>\n");
}
foreach ('difficulty') {
$r->print(
'<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
&diffgraph($dynmeta{$_})."</td></tr>\n");
}
$r->print('</table>');
}
$r->print('<h4>Evaluation Data</h4><table cellspacing=2 border=0>');
foreach ('clear','depth','helpful','correct','technical') {
$r->print(
'<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
&evalgraph($dynmeta{$_})."</td></tr>\n");
}
$r->print('</table>');
$disuri=~/^(\w+)\/(\w+)\//;
if ((($ENV{'user.domain'} eq $1) && ($ENV{'user.name'} eq $2))
|| ($ENV{'user.role.ca./'.$1.'/'.$2})) {
$r->print(
'<h4>Evaluation Comments (visible to author and co-authors only)</h4>'.
'<blockquote>'.$dynmeta{'comments'}.'</blockquote>');
$r->print(
'<h4>Error Messages (visible to author and co-authors only)</h4>');
my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$1,$2);
foreach (keys %errormsgs) {
if ($_=~/^$disuri\_\d+$/) {
my %content=&Apache::lonmsg::unpackagemsg($errormsgs{$_});
$r->print('<b>'.$content{'time'}.'</b>: '.$content{'message'}.
'<br />');
}
}
}
# ------------------------------------------------------------- All other stuff
$r->print(
'<h3>Additional Metadata (non-standard, parameters, exports)</h3>');
foreach (sort keys %content) {
my $name=$_;
my $display=&Apache::lonnet::metadata($uri,$name.'.display');
unless ($display) { $display=$name; };
my $otherinfo='';
foreach ('name','part','type','default') {
if (defined(&Apache::lonnet::metadata($uri,$name.'.'.$_))) {
$otherinfo.=' '.$_.'='.
&Apache::lonnet::metadata($uri,$name.'.'.$_).'; ';
}
}
$r->print('<b>'.$display.':</b> '.$content{$name});
if ($otherinfo) {
$r->print(' ('.$otherinfo.')');
}
$r->print("<br>\n");
}
}
# ===================================================== End Resource Space Call
} else {
# ===================================================== Construction Space Call
# ----------------------------------------------------------- Set document type
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
# ---------------------------------------------------------------------- Header
my $bodytag=&Apache::loncommon::bodytag('Edit Catalog Information');
my $disuri=$uri;
my $fn=&Apache::lonnet::filelocation('',$uri);
$disuri=~s/^\/\~\w+//;
$disuri=~s/\.meta$//;
my $displayfile='Catalog Information for '.$disuri;
if ($disuri=~/\/default$/) {
my $dir=$disuri;
$dir=~s/default$//;
$displayfile='Default Cataloging Information for Directory '.$dir;
}
%Apache::lonpublisher::metadatafields=();
%Apache::lonpublisher::metadatakeys=();
&Apache::lonpublisher::metaeval(&Apache::lonnet::getfile($fn));
$r->print(<<ENDEDIT);
<html><head><title>Edit Catalog Information</title></head>
$bodytag
<h1>$displayfile</h1>
<form method="post">
ENDEDIT
foreach ('author','title','subject','keywords','abstract','notes',
'copyright','customdistributionfile','language') {
if ($ENV{'form.new_'.$_}) {
$Apache::lonpublisher::metadatafields{$_}=$ENV{'form.new_'.$_};
}
$r->print(
&Apache::lonpublisher::textfield($_,'new_'.$_,
$Apache::lonpublisher::metadatafields{$_}));
}
if ($ENV{'form.store'}) {
my $mfh;
unless ($mfh=Apache::File->new('>'.$fn)) {
$r->print(
'<p><font color=red>Could not write metadata, FAIL</font>');
} else {
foreach (sort keys %Apache::lonpublisher::metadatafields) {
unless ($_=~/\./) {
my $unikey=$_;
$unikey=~/^([A-Za-z]+)/;
my $tag=$1;
$tag=~tr/A-Z/a-z/;
print $mfh "\n\<$tag";
foreach
(split(/\,/,$Apache::lonpublisher::metadatakeys{$unikey})) {
my $value=
$Apache::lonpublisher::metadatafields{$unikey.'.'.$_};
$value=~s/\"/\'\'/g;
print $mfh ' '.$_.'="'.$value.'"';
}
print $mfh '>'.
&HTML::Entities::encode($Apache::lonpublisher::metadatafields{$unikey})
.'</'.$tag.'>';
}
}
$r->print('<p>Wrote Metadata');
}
}
$r->print(
'<br /><input type="submit" name="store" value="Store Catalog Information"></form></body></html>');
return OK;
}
}
1;
__END__
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