# The LearningOnline Network with CAPA
# Metadata display handler
#
# $Id: lonmeta.pm,v 1.138 2005/12/14 00:12:13 banghart 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/
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;
############################################################
############################################################
##
## &get_dynamic_metadata_from_sql($url)
##
## Queries sql database for dynamic metdata
## Returns a hash of hashes, with keys of urls which match $url
## Returned fields are given below.
##
## Examples:
##
## %DynamicMetadata = &Apache::lonmeta::get_dynmaic_metadata_from_sql
## ('/res/msu/korte/');
##
## $DynamicMetadata{'/res/msu/korte/example.problem'}->{$field}
##
############################################################
############################################################
sub get_dynamic_metadata_from_sql {
my ($url) = shift();
my ($authordom,$author)=($url=~m:^/res/(\w+)/(\w+)/:);
if (! defined($authordom)) {
$authordom = shift();
}
if (! defined($author)) {
$author = shift();
}
if (! defined($authordom) || ! defined($author)) {
return ();
}
my @Fields = ('url','count','course',
'goto','goto_list',
'comefrom','comefrom_list',
'sequsage','sequsage_list',
'stdno','stdno_list',
'dependencies',
'avetries','avetries_list',
'difficulty','difficulty_list',
'disc','disc_list',
'clear','technical','correct',
'helpful','depth');
#
my $query = 'SELECT '.join(',',@Fields).
' FROM metadata WHERE url LIKE "'.$url.'%"';
my $server = &Apache::lonnet::homeserver($author,$authordom);
my $reply = &Apache::lonnet::metadata_query($query,undef,undef,
,[$server]);
return () if (! defined($reply) || ref($reply) ne 'HASH');
my $filename = $reply->{$server};
if (! defined($filename) || $filename =~ /^error/) {
return ();
}
my $max_time = time + 10; # wait 10 seconds for results at most
my %ReturnHash;
#
# Look for results
my $finished = 0;
while (! $finished && time < $max_time) {
my $datafile=$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename;
if (! -e "$datafile.end") { next; }
my $fh;
if (!($fh=Apache::File->new($datafile))) { next; }
while (my $result = <$fh>) {
chomp($result);
next if (! $result);
my @Data =
map {
&Apache::lonnet::unescape($_);
} split(',',$result);
my $url = $Data[0];
for (my $i=0;$i<=$#Fields;$i++) {
$ReturnHash{$url}->{$Fields[$i]}=$Data[$i];
}
}
$finished = 1;
}
#
return %ReturnHash;
}
# 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 $alttag;
} else {
return &mt('No information available');
}
}
# Author display
sub authordisplay {
my ($aname,$adom)=@_;
return &Apache::loncommon::aboutmewrapper
(&Apache::loncommon::plainname($aname,$adom),
$aname,$adom,'preview').' <tt>['.$aname.'@'.$adom.']</tt>';
}
# Pretty display
sub evalgraph {
my $value=shift;
if (! $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>';
}
$output.='<td> ('.sprintf("%5.2f",$value).') </td></tr></table>';
return $output;
}
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='<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>';
}
}
$output.='<td> ('.sprintf("%3.2f",$value).') </td></tr></table>';
return $output;
}
# The field names
sub fieldnames {
my $file_type=shift;
my %fields =
('title' => 'Title',
'author' =>'Author(s)',
'authorspace' => 'Author Space',
'modifyinguser' => 'Last Modifying User',
'subject' => 'Subject',
'standards' => 'Standards',
'keywords' => 'Keyword(s)',
'notes' => 'Notes',
'abstract' => 'Abstract',
'lowestgradelevel' => 'Lowest Grade Level',
'highestgradelevel' => 'Highest Grade Level',
'courserestricted' => 'Course Restricting Metadata');
if (! defined($file_type) || $file_type ne 'portfolio') {
%fields =
(%fields,
'domain' => 'Domain',
'mime' => 'MIME Type',
'language' => 'Language',
'creationdate' => 'Creation Date',
'lastrevisiondate' => 'Last Revision Date',
'owner' => 'Publisher/Owner',
'copyright' => 'Copyright/Distribution',
'customdistributionfile' => 'Custom Distribution File',
'sourceavail' => 'Source Available',
'sourcerights' => 'Source Custom Distribution File',
'obsolete' => 'Obsolete',
'obsoletereplacement' => 'Suggested Replacement for Obsolete File',
'count' => 'Network-wide number of accesses (hits)',
'course' => 'Network-wide number of courses using resource',
'course_list' => 'Network-wide courses using resource',
'sequsage' => 'Number of resources using or importing resource',
'sequsage_list' => 'Resources using or importing resource',
'goto' => 'Number of resources that follow this resource in maps',
'goto_list' => 'Resources that follow this resource in maps',
'comefrom' => 'Number of resources that lead up to this resource in maps',
'comefrom_list' => 'Resources that lead up to this resource in maps',
'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',
'disc' => 'Degree of discrimination',
'dependencies' => 'Resources used by this resource',
);
}
return &Apache::lonlocal::texthash(%fields);
}
sub select_course {
my %courses;
my $output;
my $selected;
foreach my $key (keys (%env)) {
if ($key =~ m/\.metadata\./) {
$key =~ m/^course\.(.+)(\.metadata.+$)/;
my $course = $1;
my $coursekey = 'course.'.$course.'.description';
my $value = $env{$coursekey};
$courses{$coursekey} = $value;
}
}
my $meta_not_found = 1;
if ($Apache::lonpublisher::metadatafields{'courserestricted'} eq 'none') {
$selected = ' SELECTED ';
} else {
$selected = '';
}
$output .= '<select name="new_courserestricted" >';
$output .= '<option value="none" '.$selected.'>None</option>';
foreach my $key (keys (%courses)) {
$key =~ m/(^.+)\.description$/;
if ($Apache::lonpublisher::metadatafields{'courserestricted'} eq $1) {
$selected = ' SELECTED ';
} else {
$selected = '';
}
$output .= '<option value="'.$1.'"'.$selected.'>';
$output .= $courses{$key};
$output .= '</option>';
}
$output .= '</select><br />';
return ($output);
}
# Pretty printing of metadata field
sub prettyprint {
my ($type,$value,$target,$prefix,$form,$noformat)=@_;
# $target,$prefix,$form are optional and for filecrumbs only
if (! defined($value)) {
return ' ';
}
# Title
if ($type eq 'title') {
return '<font size="+1" face="arial">'.$value.'</font>';
}
# Dates
if (($type eq 'creationdate') ||
($type eq 'lastrevisiondate')) {
return ($value?&Apache::lonlocal::locallocaltime(
&Apache::lonmysql::unsqltime($value)):
&mt('not available'));
}
# Language
if ($type eq 'language') {
return &Apache::loncommon::languagedescription($value);
}
# Copyright
if ($type eq 'copyright') {
return &Apache::loncommon::copyrightdescription($value);
}
# Copyright
if ($type eq 'sourceavail') {
return &Apache::loncommon::source_copyrightdescription($value);
}
# MIME
if ($type eq 'mime') {
return '<img src="'.&Apache::loncommon::icon($value).'" /> '.
&Apache::loncommon::filedescription($value);
}
# Person
if (($type eq 'author') ||
($type eq 'owner') ||
($type eq 'modifyinguser') ||
($type eq 'authorspace')) {
$value=~s/(\w+)(\:|\@)(\w+)/&authordisplay($1,$3)/gse;
return $value;
}
# Gradelevel
if (($type eq 'lowestgradelevel') ||
($type eq 'highestgradelevel')) {
return &Apache::loncommon::gradeleveldescription($value);
}
# Only for advance users below
if (! $env{'user.adv'}) {
return '<i>- '.&mt('not displayed').' -</i>';
}
# File
if (($type eq 'customdistributionfile') ||
($type eq 'obsoletereplacement') ||
($type eq 'goto_list') ||
($type eq 'comefrom_list') ||
($type eq 'sequsage_list') ||
($type eq 'dependencies')) {
return '<ul><font size="-1">'.join("\n",map {
my $url = &Apache::lonnet::clutter($_);
my $title = &Apache::lonnet::gettitle($url);
if ($title eq '') {
$title = 'Untitled';
if ($url =~ /\.sequence$/) {
$title .= ' Sequence';
} elsif ($url =~ /\.page$/) {
$title .= ' Page';
} elsif ($url =~ /\.problem$/) {
$title .= ' Problem';
} elsif ($url =~ /\.html$/) {
$title .= ' HTML document';
} elsif ($url =~ m:/syllabus$:) {
$title .= ' Syllabus';
}
}
$_ = '<li>'.$title.' '.
&Apache::lonhtmlcommon::crumbs($url,$target,$prefix,$form,'-1',$noformat).
'</li>'
} split(/\s*\,\s*/,$value)).'</ul></font>';
}
# Evaluations
if (($type eq 'clear') ||
($type eq 'depth') ||
($type eq 'helpful') ||
($type eq 'correct') ||
($type eq 'technical')) {
return &evalgraph($value);
}
# Difficulty
if ($type eq 'difficulty' || $type eq 'disc') {
return &diffgraph($value);
}
# List of courses
if ($type=~/\_list/) {
my @Courses = split(/\s*\,\s*/,$value);
my $Str;
foreach my $course (@Courses) {
my %courseinfo = &Apache::lonnet::coursedescription($course);
if (! exists($courseinfo{'num'}) || $courseinfo{'num'} eq '') {
next;
}
if ($Str ne '') { $Str .= '<br />'; }
$Str .= '<a href="/public/'.$courseinfo{'domain'}.'/'.
$courseinfo{'num'}.'/syllabus" target="preview">'.
$courseinfo{'description'}.'</a>';
}
return $Str;
}
# No pretty print found
return $value;
}
# Pretty input of metadata field
sub direct {
return shift;
}
sub selectbox {
my ($name,$value,$functionref,@idlist)=@_;
if (! defined($functionref)) {
$functionref=\&direct;
}
my $selout='<select name="'.$name.'">';
foreach (@idlist) {
$selout.='<option value=\''.$_.'\'';
if ($_ eq $value) {
$selout.=' selected>'.&{$functionref}($_).'</option>';
}
else {$selout.='>'.&{$functionref}($_).'</option>';}
}
return $selout.'</select>';
}
sub relatedfield {
my ($show,$relatedsearchflag,$relatedsep,$fieldname,$relatedvalue)=@_;
if (! $relatedsearchflag) {
return '';
}
if (! defined($relatedsep)) {
$relatedsep=' ';
}
if (! $show) {
return $relatedsep.' ';
}
return $relatedsep.'<input type="checkbox" name="'.$fieldname.'_related"'.
($relatedvalue?' checked="1"':'').' />';
}
sub prettyinput {
my ($type,$value,$fieldname,$formname,
$relatedsearchflag,$relatedsep,$relatedvalue,$size,$course_key)=@_;
if (! defined($size)) {
$size = 80;
}
my $output;
if (defined($course_key)) {
my $stu_add;
my $only_one;
my %meta_options;
my @cur_values_inst;
my $cur_values_stu;
my $values = $env{$course_key.'.metadata.'.$type.'.values'};
if ($env{$course_key.'.metadata.'.$type.'.options'} =~ m/stuadd/) {
$stu_add = 'true';
}
if ($env{$course_key.'.metadata.'.$type.'.options'} =~ m/onlyone/) {
$only_one = 'true';
}
# need to take instructor values out of list where instructor and student
# values may be mixed.
if ($values) {
foreach my $item (split(/,/,$values)) {
$item =~ s/^\s+//;
$meta_options{$item} = $item;
}
foreach my $item (split(/,/,$value)) {
$item =~ s/^\s+//;
if ($meta_options{$item}) {
push(@cur_values_inst,$item);
} else {
$cur_values_stu .= $item.',';
}
}
} else {
$cur_values_stu = $value;
}
if ($type eq 'courserestricted') {
return (&select_course());
# return ('<input type="hidden" name="new_courserestricted" value="'.$course_key.'" />');
}
if (($type eq 'keywords') || ($type eq 'subject')
|| ($type eq 'author')||($type eq 'notes')
|| ($type eq 'abstract')|| ($type eq 'title')|| ($type eq 'standards')) {
if ($values) {
if ($only_one) {
$output .= (&Apache::loncommon::select_form($cur_values_inst[0],'new_'.$type,%meta_options));
} else {
$output .= (&Apache::loncommon::multiple_select_form('new_'.$type,\@cur_values_inst,undef,\%meta_options));
}
}
if ($stu_add) {
$output .= '<input type="text" name="'.$fieldname.'" size="'.$size.'" '.
'value="'.$cur_values_stu.'" />'.
&relatedfield(1,$relatedsearchflag,$relatedsep,$fieldname,
$relatedvalue);
}
return ($output);
}
if (($type eq 'lowestgradelevel') ||
($type eq 'highestgradelevel')) {
return &Apache::loncommon::select_level_form($value,$fieldname).
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
return();
}
# Language
if ($type eq 'language') {
return &selectbox($fieldname,
$value,
\&Apache::loncommon::languagedescription,
(&Apache::loncommon::languageids)).
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
# Copyright
if ($type eq 'copyright') {
return &selectbox($fieldname,
$value,
\&Apache::loncommon::copyrightdescription,
(&Apache::loncommon::copyrightids)).
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
# Source Copyright
if ($type eq 'sourceavail') {
return &selectbox($fieldname,
$value,
\&Apache::loncommon::source_copyrightdescription,
(&Apache::loncommon::source_copyrightids)).
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
# Gradelevels
if (($type eq 'lowestgradelevel') ||
($type eq 'highestgradelevel')) {
return &Apache::loncommon::select_level_form($value,$fieldname).
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
# Obsolete
if ($type eq 'obsolete') {
return '<input type="checkbox" name="'.$fieldname.'"'.
($value?' checked="1"':'').' />'.
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
# Obsolete replacement file
if ($type eq 'obsoletereplacement') {
return '<input type="text" name="'.$fieldname.
'" size="60" value="'.$value.'" /><a href="javascript:openbrowser'.
"('".$formname."','".$fieldname."'".
",'')\">".&mt('Select').'</a>'.
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
# Customdistribution file
if ($type eq 'customdistributionfile') {
return '<input type="text" name="'.$fieldname.
'" size="60" value="'.$value.'" /><a href="javascript:openbrowser'.
"('".$formname."','".$fieldname."'".
",'rights')\">".&mt('Select').'</a>'.
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
# Source Customdistribution file
if ($type eq 'sourcerights') {
return '<input type="text" name="'.$fieldname.
'" size="60" value="'.$value.'" /><a href="javascript:openbrowser'.
"('".$formname."','".$fieldname."'".
",'rights')\">".&mt('Select').'</a>'.
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
if ($type eq 'courserestricted') {
return (&select_course());
#return ('<input type="hidden" name="new_courserestricted" value="'.$course_key.'" />');
}
# Dates
if (($type eq 'creationdate') ||
($type eq 'lastrevisiondate')) {
return
&Apache::lonhtmlcommon::date_setter($formname,$fieldname,$value).
&relatedfield(0,$relatedsearchflag,$relatedsep);
}
# No pretty input found
$value=~s/^\s+//gs;
$value=~s/\s+$//gs;
$value=~s/\s+/ /gs;
$value=~s/\"/\"\;/gs;
return
'<input type="text" name="'.$fieldname.'" size="'.$size.'" '.
'value="'.$value.'" />'.
&relatedfield(1,$relatedsearchflag,$relatedsep,$fieldname,
$relatedvalue);
}
# Main Handler
sub handler {
my $r=shift;
#
my $uri=$r->uri;
#
# Set document type
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
return OK if $r->header_only;
#
my ($resdomain,$resuser)=
(&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//);
my $html=&Apache::lonxml::xmlbegin();
$r->print($html.'<head><title>'.
'Catalog Information'.
'</title></head>');
if ($uri=~m:/adm/bombs/(.*)$:) {
$r->print(&Apache::loncommon::bodytag('Error Messages'));
# Looking for all bombs?
&report_bombs($r,$uri);
} elsif ($uri=~/\/portfolio\//) {
($resdomain,$resuser)=
(&Apache::lonnet::declutter($uri)=~m|^(\w+)/(\w+)/portfolio|);
$r->print(&Apache::loncommon::bodytag
('Edit Portfolio File Information','','','',$resdomain));
&present_editable_metadata($r,$uri,'portfolio');
} elsif ($uri=~/^\/\~/) {
# Construction space
$r->print(&Apache::loncommon::bodytag
('Edit Catalog Information','','','',$resdomain));
&present_editable_metadata($r,$uri);
} else {
$r->print(&Apache::loncommon::bodytag
('Catalog Information','','','',$resdomain));
&present_uneditable_metadata($r,$uri);
}
$r->print('</body></html>');
return OK;
}
#####################################################
#####################################################
### ###
### Report Bombs ###
### ###
#####################################################
#####################################################
sub report_bombs {
my ($r,$uri) = @_;
# Set document type
$uri =~ s:/adm/bombs/::;
$uri = &Apache::lonnet::declutter($uri);
$r->print('<h1>'.&Apache::lonnet::clutter($uri).'</h1>');
my ($domain,$author)=($uri=~/^(\w+)\/(\w+)\//);
if (&Apache::loncacc::constructaccess('/~'.$author.'/',$domain)) {
if ($env{'form.clearbombs'}) {
&Apache::lonmsg::clear_author_res_msg($uri);
}
my $clear=&mt('Clear all Messages in Subdirectory');
$r->print(<<ENDCLEAR);
<form method="post">
<input type="submit" name="clearbombs" value="$clear" />
</form>
ENDCLEAR
my %brokenurls =
&Apache::lonmsg::all_url_author_res_msg($author,$domain);
foreach (sort(keys(%brokenurls))) {
if ($_=~/^\Q$uri\E/) {
$r->print
('<a href="'.&Apache::lonnet::clutter($_).'">'.$_.'</a>'.
&Apache::lonmsg::retrieve_author_res_msg($_).
'<hr />');
}
}
} else {
$r->print(&mt('Not authorized'));
}
return;
}
#####################################################
#####################################################
### ###
### Uneditable Metadata Display ###
### ###
#####################################################
#####################################################
sub present_uneditable_metadata {
my ($r,$uri) = @_;
#
my %content=();
# Read file
foreach (split(/\,/,&Apache::lonnet::metadata($uri,'keys'))) {
$content{$_}=&Apache::lonnet::metadata($uri,$_);
}
# Render Output
# displayed url
my ($thisversion)=($uri=~/\.(\d+)\.(\w+)\.meta$/);
$uri=~s/\.meta$//;
my $disuri=&Apache::lonnet::clutter($uri);
# version
my $currentversion=&Apache::lonnet::getversion($disuri);
my $versiondisplay='';
if ($thisversion) {
$versiondisplay=&mt('Version').': '.$thisversion.
' ('.&mt('most recent version').': '.
($currentversion>0 ?
$currentversion :
&mt('information not available')).')';
} else {
$versiondisplay='Version: '.$currentversion;
}
# crumbify displayed URL uri target prefix form size
$disuri=&Apache::lonhtmlcommon::crumbs($disuri,undef, undef, undef,'+1');
$disuri =~ s:<br />::g;
# obsolete
my $obsolete=$content{'obsolete'};
my $obsoletewarning='';
if (($obsolete) && ($env{'user.adv'})) {
$obsoletewarning='<p><font color="red">'.
&mt('This resource has been marked obsolete by the author(s)').
'</font></p>';
}
#
my %lt=&fieldnames();
my $table='';
my $title = $content{'title'};
if (! defined($title)) {
$title = 'Untitled Resource';
}
foreach ('title',
'author',
'subject',
'keywords',
'notes',
'abstract',
'lowestgradelevel',
'highestgradelevel',
'standards',
'mime',
'language',
'creationdate',
'lastrevisiondate',
'owner',
'copyright',
'customdistributionfile',
'sourceavail',
'sourcerights',
'obsolete',
'obsoletereplacement') {
$table.='<tr><td bgcolor="#AAAAAA">'.$lt{$_}.
'</td><td bgcolor="#CCCCCC">'.
&prettyprint($_,$content{$_}).'</td></tr>';
delete $content{$_};
}
#
$r->print(<<ENDHEAD);
<h2>$title</h2>
<p>
$disuri<br />
$obsoletewarning
$versiondisplay
</p>
<table cellspacing="2" border="0">
$table
</table>
ENDHEAD
if ($env{'user.adv'}) {
&print_dynamic_metadata($r,$uri,\%content);
}
return;
}
sub print_dynamic_metadata {
my ($r,$uri,$content) = @_;
#
my %content = %$content;
my %lt=&fieldnames();
#
my $description = 'Dynamic Metadata (updated periodically)';
$r->print('<h3>'.&mt($description).'</h3>'.
&mt('Processing'));
$r->rflush();
my %items=&fieldnames();
my %dynmeta=&dynamicmeta($uri);
#
# General Access and Usage Statistics
if (exists($dynmeta{'count'}) ||
exists($dynmeta{'sequsage'}) ||
exists($dynmeta{'comefrom'}) ||
exists($dynmeta{'goto'}) ||
exists($dynmeta{'course'})) {
$r->print('<h4>'.&mt('Access and Usage Statistics').'</h4>'.
'<table cellspacing="2" border="0">');
foreach ('count',
'sequsage','sequsage_list',
'comefrom','comefrom_list',
'goto','goto_list',
'course','course_list') {
$r->print('<tr><td bgcolor="#AAAAAA">'.$lt{$_}.'</td>'.
'<td bgcolor="#CCCCCC">'.
&prettyprint($_,$dynmeta{$_})."</td></tr>\n");
}
$r->print('</table>');
} else {
$r->print('<h4>'.&mt('No Access or Usages Statistics are available for this resource.').'</h4>');
}
#
# Assessment statistics
if ($uri=~/\.(problem|exam|quiz|assess|survey|form)$/) {
if (exists($dynmeta{'stdno'}) ||
exists($dynmeta{'avetries'}) ||
exists($dynmeta{'difficulty'}) ||
exists($dynmeta{'disc'})) {
# This is an assessment, print assessment data
$r->print('<h4>'.
&mt('Overall Assessment Statistical Data').
'</h4>'.
'<table cellspacing="2" border="0">');
$r->print('<tr><td bgcolor="#AAAAAA">'.$lt{'stdno'}.'</td>'.
'<td bgcolor="#CCCCCC">'.
&prettyprint('stdno',$dynmeta{'stdno'}).
'</td>'."</tr>\n");
foreach ('avetries','difficulty','disc') {
$r->print('<tr><td bgcolor="#AAAAAA">'.$lt{$_}.'</td>'.
'<td bgcolor="#CCCCCC">'.
&prettyprint($_,sprintf('%5.2f',$dynmeta{$_})).
'</td>'."</tr>\n");
}
$r->print('</table>');
}
if (exists($dynmeta{'stats'})) {
#
# New assessment statistics
$r->print('<h4>'.
&mt('Detailed Assessment Statistical Data').
'</h4>');
my $table = '<table cellspacing="2" border="0">'.
'<tr>'.
'<th>Course</th>'.
'<th>Section(s)</th>'.
'<th>Num Students</th>'.
'<th>Mean Tries</th>'.
'<th>Degree of Difficulty</th>'.
'<th>Degree of Discrimination</th>'.
'<th>Time of computation</th>'.
'</tr>'.$/;
foreach my $identifier (sort(keys(%{$dynmeta{'stats'}}))) {
my $data = $dynmeta{'stats'}->{$identifier};
my $course = $data->{'course'};
my %courseinfo = &Apache::lonnet::coursedescription($course);
if (! exists($courseinfo{'num'}) || $courseinfo{'num'} eq '') {
&Apache::lonnet::logthis('lookup for '.$course.' failed');
next;
}
$table .= '<tr>';
$table .=
'<td><nobr>'.$courseinfo{'description'}.'</nobr></td>';
$table .=
'<td align="right">'.$data->{'sections'}.'</td>';
$table .=
'<td align="right">'.$data->{'stdno'}.'</td>';
foreach ('avetries','difficulty','disc') {
$table .= '<td align="right">';
if (exists($data->{$_})) {
$table .= sprintf('%.2f',$data->{$_}).' ';
} else {
$table .= '';
}
$table .= '</td>';
}
$table .=
'<td><nobr>'.
&Apache::lonlocal::locallocaltime($data->{'timestamp'}).
'</nobr></td>';
$table .=
'</tr>'.$/;
}
$table .= '</table>'.$/;
$r->print($table);
} else {
$r->print('No new dynamic data found.');
}
} else {
$r->print('<h4>'.
&mt('No Assessment Statistical Data is available for this resource').
'</h4>');
}
#
#
if (exists($dynmeta{'clear'}) ||
exists($dynmeta{'depth'}) ||
exists($dynmeta{'helpful'}) ||
exists($dynmeta{'correct'}) ||
exists($dynmeta{'technical'})){
$r->print('<h4>'.&mt('Evaluation Data').'</h4>'.
'<table cellspacing="2" border="0">');
foreach ('clear','depth','helpful','correct','technical') {
$r->print('<tr><td bgcolor="#AAAAAA">'.$lt{$_}.'</td>'.
'<td bgcolor="#CCCCCC">'.
&prettyprint($_,$dynmeta{$_})."</td></tr>\n");
}
$r->print('</table>');
} else {
$r->print('<h4>'.&mt('No Evaluation Data is available for this resource.').'</h4>');
}
$uri=~/^\/res\/(\w+)\/(\w+)\//;
if ((($env{'user.domain'} eq $1) && ($env{'user.name'} eq $2))
|| ($env{'user.role.ca./'.$1.'/'.$2})) {
if (exists($dynmeta{'comments'})) {
$r->print('<h4>'.&mt('Evaluation Comments').' ('.
&mt('visible to author and co-authors only').
')</h4>'.
'<blockquote>'.$dynmeta{'comments'}.'</blockquote>');
} else {
$r->print('<h4>'.&mt('There are no Evaluation Comments on this resource.').'</h4>');
}
my $bombs = &Apache::lonmsg::retrieve_author_res_msg($uri);
if (defined($bombs) && $bombs ne '') {
$r->print('<a name="bombs" /><h4>'.&mt('Error Messages').' ('.
&mt('visible to author and co-authors only').')'.
'</h4>'.$bombs);
} else {
$r->print('<h4>'.&mt('There are currently no Error Messages for this resource.').'</h4>');
}
}
#
# All other stuff
$r->print('<h3>'.
&mt('Additional Metadata (non-standard, parameters, exports)').
'</h3><table border="0" cellspacing="1">');
foreach (sort(keys(%content))) {
my $name=$_;
if ($name!~/\.display$/) {
my $display=&Apache::lonnet::metadata($uri,
$name.'.display');
if (! $display) {
$display=$name;
};
my $otherinfo='';
foreach ('name','part','type','default') {
if (defined(&Apache::lonnet::metadata($uri,
$name.'.'.$_))) {
$otherinfo.=' '.$_.'='.
&Apache::lonnet::metadata($uri,
$name.'.'.$_).'; ';
}
}
$r->print('<tr><td bgcolor="#bbccbb"><font size="-1" color="#556655">'.$display.'</font></td><td bgcolor="#ccddcc"><font size="-1" color="#556655">'.$content{$name});
if ($otherinfo) {
$r->print(' ('.$otherinfo.')');
}
$r->print("</font></td></tr>\n");
}
}
$r->print("</table>");
return;
}
#####################################################
#####################################################
### ###
### Editable metadata display ###
### ###
#####################################################
#####################################################
sub present_editable_metadata {
my ($r,$uri, $file_type) = @_;
# Construction Space Call
# Header
my $disuri=$uri;
my $fn=&Apache::lonnet::filelocation('',$uri);
$disuri=~s/^\/\~/\/priv\//;
$disuri=~s/\.meta$//;
$disuri=~s|^/editupload||;
my $target=$uri;
$target=~s/^\/\~/\/res\/$env{'request.role.domain'}\//;
$target=~s/\.meta$//;
my $bombs=&Apache::lonmsg::retrieve_author_res_msg($target);
if ($bombs) {
my $showdel=1;
if ($env{'form.delmsg'}) {
if (&Apache::lonmsg::del_url_author_res_msg($target) eq 'ok') {
$bombs=&mt('Messages deleted.');
$showdel=0;
} else {
$bombs=&mt('Error deleting messages');
}
}
if ($env{'form.clearmsg'}) {
my $cleardir=$target;
$cleardir=~s/\/[^\/]+$/\//;
if (&Apache::lonmsg::clear_author_res_msg($cleardir) eq 'ok') {
$bombs=&mt('Messages cleared.');
$showdel=0;
} else {
$bombs=&mt('Error clearing messages');
}
}
my $del=&mt('Delete Messages for this Resource');
my $clear=&mt('Clear all Messages in Subdirectory');
my $goback=&mt('Back to Source File');
$r->print(<<ENDBOMBS);
<h1>$disuri</h1>
<form method="post" name="defaultmeta">
ENDBOMBS
if ($showdel) {
$r->print(<<ENDDEL);
<input type="submit" name="delmsg" value="$del" />
<input type="submit" name="clearmsg" value="$clear" />
ENDDEL
} else {
$r->print('<a href="'.$disuri.'" />'.$goback.'</a>');
}
$r->print('<br />'.$bombs);
} else {
if ($env{'form.store'}) {
my $mfh;
my $formname='store';
my $file_content;
foreach my $meta_field (keys %env) {
if (&Apache::loncommon::get_env_multiple('form.new_keywords')) {
$Apache::lonpublisher::metadatafields{'keywords'} =
join (',', &Apache::loncommon::get_env_multiple('form.new_keywords'));
}
}
foreach (sort keys %Apache::lonpublisher::metadatafields) {
next if ($_ =~ /\./);
my $unikey=$_;
$unikey=~/^([A-Za-z]+)/;
my $tag=$1;
$tag=~tr/A-Z/a-z/;
$file_content.= "\n\<$tag";
foreach (split(/\,/,
$Apache::lonpublisher::metadatakeys{$unikey})
) {
my $value=
$Apache::lonpublisher::metadatafields{$unikey.'.'.$_};
$value=~s/\"/\'\'/g;
$file_content.=' '.$_.'="'.$value.'"' ;
# print $mfh ' '.$_.'="'.$value.'"';
}
$file_content.= '>'.
&HTML::Entities::encode
($Apache::lonpublisher::metadatafields{$unikey},
'<>&"').
'</'.$tag.'>';
}
if ($fn =~ /\/portfolio\//) {
$fn =~ /\/portfolio\/(.*)$/;
my $new_fn = '/'.$1;
$env{'form.'.$formname}=$file_content."\n";
$env{'form.'.$formname.'.filename'}=$new_fn;
&Apache::lonnet::userfileupload('uploaddoc','',
'portfolio'.$env{'form.currentpath'});
if (&Apache::lonnet::userfileupload($formname,'','portfolio') eq 'error: no uploaded file') {
$r->print('<p><font color="red">'.
&mt('Could not write metadata').', '.
&mt('FAIL').'</font></p>');
} else {
$r->print('<p><font color="blue">'.&mt('Wrote Metadata').
' '.&Apache::lonlocal::locallocaltime(time).
'</font></p>');
}
} else {
if (! ($mfh=Apache::File->new('>'.$fn))) {
$r->print('<p><font color="red">'.
&mt('Could not write metadata').', '.
&mt('FAIL').'</font></p>');
} else {
print $mfh $file_content;
$r->print('<p><font color="blue">'.&mt('Wrote Metadata').
' '.&Apache::lonlocal::locallocaltime(time).
'</font></p>');
}
}
}
my $displayfile='Catalog Information for '.$disuri;
if ($disuri=~/\/default$/) {
my $dir=$disuri;
$dir=~s/default$//;
$displayfile=
&mt('Default Cataloging Information for Directory').' '.
$dir;
}
%Apache::lonpublisher::metadatafields=();
%Apache::lonpublisher::metadatakeys=();
my $result=&Apache::lonnet::getfile($fn);
if ($result == -1){
$r->print('Creating new '.$disuri);
} else {
&Apache::lonpublisher::metaeval($result);
}
$r->print(<<ENDEDIT);
<h1>$displayfile</h1>
<form method="post" name="defaultmeta">
ENDEDIT
$r->print('<script language="JavaScript">'.
&Apache::loncommon::browser_and_searcher_javascript().
'</script>');
my %lt=&fieldnames($file_type);
my $output;
my @fields;
if ($file_type eq 'portfolio') {
@fields = ('author','title','subject','keywords','abstract','notes','lowestgradelevel',
'highestgradelevel','standards','courserestricted');
} else {
@fields = ('author','title','subject','keywords','abstract','notes',
'copyright','customdistributionfile','language',
'standards',
'lowestgradelevel','highestgradelevel','sourceavail','sourcerights',
'obsolete','obsoletereplacement');
}
if (! $Apache::lonpublisher::metadatafields{'courserestricted'}) {
$Apache::lonpublisher::metadatafields{'courserestricted'}=
'none';
}
if (! $Apache::lonpublisher::metadatafields{'copyright'}) {
$Apache::lonpublisher::metadatafields{'copyright'}=
'default';
}
if ($Apache::lonpublisher::metadatafields{'courserestricted'} ne 'none') {
$r->print('Using: <strong> '.$env{$Apache::lonpublisher::metadatafields{'courserestricted'}.".description"}.
"</strong> metadata framework<br />");
} else {
$r->print("This resource is not associated with a metadata framework<br />");
}
foreach my $field_name(@fields) {
if (defined($env{'form.new_'.$field_name})) {
$Apache::lonpublisher::metadatafields{$field_name}=
join(',',&Apache::loncommon::get_env_multiple('form.new_'.$field_name));
}
if ($Apache::lonpublisher::metadatafields{'courserestricted'} ne 'none') {
# handle restrictions here
if (($env{$Apache::lonpublisher::metadatafields{'courserestricted'}.'.metadata.'.$field_name.'.options'} =~ m/active/) ||
($field_name eq 'courserestricted')){
$output.=('<p>'.$lt{$field_name}.': '.
&prettyinput($field_name,
$Apache::lonpublisher::metadatafields{$field_name},
'new_'.$field_name,'defaultmeta',
undef,undef,undef,undef,
$Apache::lonpublisher::metadatafields{'courserestricted'}).'</p>');
}
} else {
$output.=('<p>'.$lt{$field_name}.': '.
&prettyinput($field_name,
$Apache::lonpublisher::metadatafields{$field_name},
'new_'.$field_name,'defaultmeta').'</p>');
}
}
$r->print($output.'<br /><input type="submit" name="store" value="'.
&mt('Store Catalog Information').'">');
}
$r->print('</form>');
return;
}
1;
__END__
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