1: # The LearningOnline Network with CAPA
2: # Metadata display handler
3: #
4: # $Id: lonmeta.pm,v 1.22 2002/10/18 13:49:49 www Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # (TeX Content Handler
29: #
30: # 05/29/00,05/30,10/11 Gerd Kortemeyer)
31: #
32: # 10/19,10/21,10/23,11/27,08/09/01,12/22,12/24,12/25 Gerd Kortemeyer
33:
34: package Apache::lonmeta;
35:
36: use strict;
37: use Apache::Constants qw(:common);
38: use Apache::lonnet();
39: use Apache::loncommon();
40:
41: # ----------------------------------------- Fetch and evaluate dynamic metadata
42:
43: sub dynamicmeta {
44: my $url=&Apache::lonnet::declutter(shift);
45: $url=~s/\.meta$//;
46: my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
47: my $regexp=$url;
48: $regexp=~s/(\W)/\\$1/g;
49: $regexp='___'.$regexp.'___';
50: my %evaldata=&Apache::lonnet::dump('nohist_resevaldata',$adomain,
51: $aauthor,$regexp);
52: my %sum;
53: my %cnt;
54: my %listitems=('count' => 'add',
55: 'course' => 'add',
56: 'avetries' => 'avg',
57: 'stdno' => 'add',
58: 'difficulty' => 'avg',
59: 'clear' => 'avg',
60: 'technical' => 'avg',
61: 'helpful' => 'avg',
62: 'correct' => 'avg',
63: 'depth' => 'avg',
64: 'comments' => 'app',
65: 'usage' => 'cnt'
66: );
67: foreach (keys %evaldata) {
68: $_=~/___(\w+)$/;
69: if (defined($cnt{$1})) { $cnt{$1}++; } else { $cnt{$1}=1; }
70: unless ($listitems{$1} eq 'app') {
71: if (defined($sum{$1})) {
72: $sum{$1}+=$evaldata{$_};
73: } else {
74: $sum{$1}=$evaldata{$_};
75: }
76: } else {
77: if (defined($sum{$1})) {
78: if ($evaldata{$_}) {
79: $sum{$1}.='<hr>'.$evaldata{$_};
80: }
81: } else {
82: $sum{$1}=''.$evaldata{$_};
83: }
84: }
85: }
86: my %returnhash=();
87: foreach (keys %cnt) {
88: if ($listitems{$_} eq 'avg') {
89: $returnhash{$_}=int(($sum{$_}/$cnt{$_})*100.0+0.5)/100.0;
90: } elsif ($listitems{$_} eq 'cnt') {
91: $returnhash{$_}=$cnt{$_};
92: } else {
93: $returnhash{$_}=$sum{$_};
94: }
95: }
96: return %returnhash;
97: }
98:
99: # -------------------------------------------------------------- Pretty display
100:
101: sub evalgraph {
102: my $value=shift;
103: unless ($value) { return ''; }
104: my $val=int($value*10.+0.5)-10;
105: my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
106: if ($val>=20) {
107: $output.='<td width=20 bgcolor="#555555">  </td>';
108: } else {
109: $output.='<td width='.($val).' bgcolor="#555555"> </td>'.
110: '<td width='.(20-$val).' bgcolor="#FF3333"> </td>';
111: }
112: $output.='<td bgcolor="#FFFF33"> </td>';
113: if ($val>20) {
114: $output.='<td width='.($val-20).' bgcolor="#33FF33"> </td>'.
115: '<td width='.(40-$val).' bgcolor="#555555"> </td>';
116: } else {
117: $output.='<td width=20 bgcolor="#555555">  </td>';
118: }
119: $output.='<td> ('.$value.') </td></tr></table>';
120: return $output;
121: }
122:
123: sub diffgraph {
124: my $value=shift;
125: unless ($value) { return ''; }
126: my $val=int(40.0*$value+0.5);
127: my @colors=('#FF9933','#EEAA33','#DDBB33','#CCCC33',
128: '#BBDD33','#CCCC33','#DDBB33','#EEAA33');
129: my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
130: for (my $i=0;$i<8;$i++) {
131: if ($val>$i*5) {
132: $output.='<td width=5 bgcolor="'.$colors[$i].'"> </td>';
133: } else {
134: $output.='<td width=5 bgcolor="#555555"> </td>';
135: }
136: }
137: $output.='<td> ('.$value.') </td></tr></table>';
138: return $output;
139: }
140:
141: # ================================================================ Main Handler
142:
143: sub handler {
144: my $r=shift;
145:
146: my $loaderror=&Apache::lonnet::overloaderror($r);
147: if ($loaderror) { return $loaderror; }
148:
149:
150: my $uri=$r->uri;
151:
152: my ($resdomain,$resuser)=
153: (&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//);
154:
155: $loaderror=
156: &Apache::lonnet::overloaderror($r,
157: &Apache::lonnet::homeserver($resuser,$resdomain));
158: if ($loaderror) { return $loaderror; }
159:
160: my %content=();
161:
162: # ----------------------------------------------------------- Set document type
163:
164: $r->content_type('text/html');
165: $r->send_http_header;
166:
167: return OK if $r->header_only;
168:
169: # ------------------------------------------------------------------- Read file
170: foreach (split(/\,/,&Apache::lonnet::metadata($uri,'keys'))) {
171: $content{$_}=&Apache::lonnet::metadata($uri,$_);
172: }
173: # ------------------------------------------------------------------ Hide stuff
174:
175: unless ($ENV{'user.adv'}) {
176: foreach ('keywords','notes','abstract','subject') {
177: $content{$_}='<i>- not displayed -</i>';
178: }
179: }
180:
181: # --------------------------------------------------------------- Render Output
182: my ($thisversion)=($uri=~/\.(\d+)\.(\w+)\.meta/);
183: my $creationdate=localtime(
184: &Apache::loncommon::unsqltime($content{'creationdate'}));
185: my $lastrevisiondate=localtime(
186: &Apache::loncommon::unsqltime($content{'lastrevisiondate'}));
187: my $language=&Apache::loncommon::languagedescription($content{'language'});
188: my $mime=&Apache::loncommon::filedescription($content{'mime'});
189: my $disuri=&Apache::lonnet::declutter($uri);
190: $disuri=~s/\.meta$//;
191: my $currentversion=&Apache::lonnet::getversion($disuri);
192: my $versiondisplay='';
193: if ($thisversion) {
194: $versiondisplay='Version: '.$thisversion.
195: ' (most recent version: '.$currentversion.')';
196: } else {
197: $versiondisplay='Version: '.$currentversion;
198: }
199: my $bodytag=&Apache::loncommon::bodytag
200: ('Catalog Information','','','',$resdomain);
201: $r->print(<<ENDHEAD);
202: <html><head><title>Catalog Information</title></head>
203: $bodytag
204: <h2>$content{'title'}</h2>
205: <h3><tt>$disuri</tt></h3>
206: $versiondisplay<br />
207: <table cellspacing=2 border=0>
208: <tr><td bgcolor='#AAAAAA'>Author(s)</td>
209: <td bgcolor="#CCCCCC">$content{'author'} </td></tr>
210: <tr><td bgcolor='#AAAAAA'>Subject</td>
211: <td bgcolor="#CCCCCC">$content{'subject'} </td></tr>
212: <tr><td bgcolor='#AAAAAA'>Keyword(s)</td>
213: <td bgcolor="#CCCCCC">$content{'keywords'} </td></tr>
214: <tr><td bgcolor='#AAAAAA'>Notes</td>
215: <td bgcolor="#CCCCCC">$content{'notes'} </td></tr>
216: <tr><td bgcolor='#AAAAAA'>Abstract</td>
217: <td bgcolor="#CCCCCC">$content{'abstract'} </td></tr>
218: <tr><td bgcolor='#AAAAAA'>MIME Type</td>
219: <td bgcolor="#CCCCCC">$mime ($content{'mime'}) </td></tr>
220: <tr><td bgcolor='#AAAAAA'>Language</td>
221: <td bgcolor="#CCCCCC">$language </td></tr>
222: <tr><td bgcolor='#AAAAAA'>Creation Date</td>
223: <td bgcolor="#CCCCCC">$creationdate </td></tr>
224: <tr><td bgcolor='#AAAAAA'>
225: Last Revision Date</td><td bgcolor="#CCCCCC">$lastrevisiondate </td></tr>
226: <tr><td bgcolor='#AAAAAA'>Publisher/Owner</td>
227: <td bgcolor="#CCCCCC">$content{'owner'} </td></tr>
228: <tr><td bgcolor='#AAAAAA'>Copyright/Distribution</td>
229: <td bgcolor="#CCCCCC">$content{'copyright'}
230: </table>
231: ENDHEAD
232: delete($content{'title'});
233: delete($content{'author'});
234: delete($content{'subject'});
235: delete($content{'keywords'});
236: delete($content{'notes'});
237: delete($content{'abstract'});
238: delete($content{'mime'});
239: delete($content{'language'});
240: delete($content{'creationdate'});
241: delete($content{'lastrevisiondate'});
242: delete($content{'owner'});
243: delete($content{'copyright'});
244: if ($ENV{'user.adv'}) {
245: # ------------------------------------------------------------ Dynamic Metadata
246: $r->print(
247: '<h3>Dynamic Metadata (updated periodically)</h3>Processing ...<br>');
248: $r->rflush();
249: my %items=(
250: 'count' => 'Network-wide number of accesses (hits)',
251: 'course' => 'Network-wide number of courses using resource',
252: 'usage' => 'Number of resources using or importing resource',
253: 'clear' => 'Material presented in clear way',
254: 'depth' => 'Material covered with sufficient depth',
255: 'helpful' => 'Material is helpful',
256: 'correct' => 'Material appears to be correct',
257: 'technical' => 'Resource is technically correct',
258: 'avetries' => 'Average number of tries till solved',
259: 'stdno' => 'Total number of students who have worked on this problem',
260: 'difficulty' => 'Degree of difficulty');
261: my %dynmeta=&dynamicmeta($uri);
262: $r->print(
263: '</table><h4>Access and Usage Statistics</h4><table cellspacing=2 border=0>');
264: foreach ('count','usage','course') {
265: $r->print(
266: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
267: $dynmeta{$_}." </td></tr>\n");
268: }
269: $r->print('</table>');
270: if ($uri=~/\.(problem|exam|quiz|assess|survey|form)\.meta$/) {
271: $r->print(
272: '<h4>Assessment Statistical Data</h4><table cellspacing=2 border=0>');
273: foreach ('stdno','avetries') {
274: $r->print(
275: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
276: $dynmeta{$_}." </td></tr>\n");
277: }
278: foreach ('difficulty') {
279: $r->print(
280: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
281: &diffgraph($dynmeta{$_})."</td></tr>\n");
282: }
283: $r->print('</table>');
284: }
285: $r->print('<h4>Evaluation Data</h4><table cellspacing=2 border=0>');
286: foreach ('clear','depth','helpful','correct','technical') {
287: $r->print(
288: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
289: &evalgraph($dynmeta{$_})."</td></tr>\n");
290: }
291: $r->print('</table>');
292: $disuri=~/^(\w+)\/(\w+)\//;
293: if ((($ENV{'user.domain'} eq $1) && ($ENV{'user.name'} eq $2))
294: || ($ENV{'user.role.ca./'.$1.'/'.$2})) {
295: $r->print(
296: '<h4>Evaluation Comments (visible to author and co-authors only)</h4>'.
297: '<blockquote>'.$dynmeta{'comments'}.'</blockquote>');
298: }
299: # ------------------------------------------------------------- All other stuff
300: $r->print(
301: '<h3>Additional Metadata (non-standard, parameters, exports)</h3>');
302: foreach (sort keys %content) {
303: my $name=$_;
304: my $display=&Apache::lonnet::metadata($uri,$name.'.display');
305: unless ($display) { $display=$name; };
306: my $otherinfo='';
307: foreach ('name','part','type','default') {
308: if (defined(&Apache::lonnet::metadata($uri,$name.'.'.$_))) {
309: $otherinfo.=' '.$_.'='.
310: &Apache::lonnet::metadata($uri,$name.'.'.$_).'; ';
311: }
312: }
313: $r->print('<b>'.$display.':</b> '.$content{$name});
314: if ($otherinfo) {
315: $r->print(' ('.$otherinfo.')');
316: }
317: $r->print("<br>\n");
318: }
319: }
320: $r->print('</body></html>');
321: return OK;
322: }
323:
324: 1;
325: __END__
326:
327:
328:
329:
330:
331:
332:
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