1: # The LearningOnline Network with CAPA
2: # Metadata display handler
3: #
4: # $Id: lonmeta.pm,v 1.29 2003/04/12 15:57:30 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: use Apache::lonmsg;
41: use Apache::lonpublisher;
42:
43: # ----------------------------------------- Fetch and evaluate dynamic metadata
44:
45: sub dynamicmeta {
46: my $url=&Apache::lonnet::declutter(shift);
47: $url=~s/\.meta$//;
48: my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
49: my $regexp=$url;
50: $regexp=~s/(\W)/\\$1/g;
51: $regexp='___'.$regexp.'___';
52: my %evaldata=&Apache::lonnet::dump('nohist_resevaldata',$adomain,
53: $aauthor,$regexp);
54: my %sum;
55: my %cnt;
56: my %listitems=('count' => 'add',
57: 'course' => 'add',
58: 'goto' => 'add',
59: 'comefrom' => 'add',
60: 'avetries' => 'avg',
61: 'stdno' => 'add',
62: 'difficulty' => 'avg',
63: 'clear' => 'avg',
64: 'technical' => 'avg',
65: 'helpful' => 'avg',
66: 'correct' => 'avg',
67: 'depth' => 'avg',
68: 'comments' => 'app',
69: 'usage' => 'cnt'
70: );
71: foreach (keys %evaldata) {
72: $_=~/___(\w+)$/;
73: if (defined($cnt{$1})) { $cnt{$1}++; } else { $cnt{$1}=1; }
74: unless ($listitems{$1} eq 'app') {
75: if (defined($sum{$1})) {
76: $sum{$1}+=$evaldata{$_};
77: } else {
78: $sum{$1}=$evaldata{$_};
79: }
80: } else {
81: if (defined($sum{$1})) {
82: if ($evaldata{$_}) {
83: $sum{$1}.='<hr>'.$evaldata{$_};
84: }
85: } else {
86: $sum{$1}=''.$evaldata{$_};
87: }
88: }
89: }
90: my %returnhash=();
91: foreach (keys %cnt) {
92: if ($listitems{$_} eq 'avg') {
93: $returnhash{$_}=int(($sum{$_}/$cnt{$_})*100.0+0.5)/100.0;
94: } elsif ($listitems{$_} eq 'cnt') {
95: $returnhash{$_}=$cnt{$_};
96: } else {
97: $returnhash{$_}=$sum{$_};
98: }
99: }
100: return %returnhash;
101: }
102:
103: # ------------------------------------- Try to make an alt tag if there is none
104:
105: sub alttag {
106: my ($base,$src)=@_;
107: my $fullpath=&Apache::lonnet::hreflocation($base,$src);
108: my $alttag=&Apache::lonnet::metadata($fullpath,'title').' '.
109: &Apache::lonnet::metadata($fullpath,'subject').' '.
110: &Apache::lonnet::metadata($fullpath,'abstract');
111: $alttag=~s/\s+/ /gs;
112: $alttag=~s/\"//gs;
113: $alttag=~s/\'//gs;
114: $alttag=~s/\s+$//gs;
115: $alttag=~s/^\s+//gs;
116: if ($alttag) { return $alttag; } else
117: { return 'No information available'; }
118: }
119:
120: # -------------------------------------------------------------- Author display
121:
122: sub authordisplay {
123: my ($aname,$adom)=@_;
124: return &Apache::loncommon::aboutmewrapper(
125: &Apache::loncommon::plainname($aname,$adom),
126: $aname,$adom).' <tt>['.$aname.'@'.$adom.']</tt>';
127: }
128:
129: # -------------------------------------------------------------- Pretty display
130:
131: sub evalgraph {
132: my $value=shift;
133: unless ($value) { return ''; }
134: my $val=int($value*10.+0.5)-10;
135: my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
136: if ($val>=20) {
137: $output.='<td width=20 bgcolor="#555555">  </td>';
138: } else {
139: $output.='<td width='.($val).' bgcolor="#555555"> </td>'.
140: '<td width='.(20-$val).' bgcolor="#FF3333"> </td>';
141: }
142: $output.='<td bgcolor="#FFFF33"> </td>';
143: if ($val>20) {
144: $output.='<td width='.($val-20).' bgcolor="#33FF33"> </td>'.
145: '<td width='.(40-$val).' bgcolor="#555555"> </td>';
146: } else {
147: $output.='<td width=20 bgcolor="#555555">  </td>';
148: }
149: $output.='<td> ('.$value.') </td></tr></table>';
150: return $output;
151: }
152:
153: sub diffgraph {
154: my $value=shift;
155: unless ($value) { return ''; }
156: my $val=int(40.0*$value+0.5);
157: my @colors=('#FF9933','#EEAA33','#DDBB33','#CCCC33',
158: '#BBDD33','#CCCC33','#DDBB33','#EEAA33');
159: my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
160: for (my $i=0;$i<8;$i++) {
161: if ($val>$i*5) {
162: $output.='<td width=5 bgcolor="'.$colors[$i].'"> </td>';
163: } else {
164: $output.='<td width=5 bgcolor="#555555"> </td>';
165: }
166: }
167: $output.='<td> ('.$value.') </td></tr></table>';
168: return $output;
169: }
170:
171: # ================================================================ Main Handler
172:
173: sub handler {
174: my $r=shift;
175:
176: my $loaderror=&Apache::lonnet::overloaderror($r);
177: if ($loaderror) { return $loaderror; }
178:
179:
180: my $uri=$r->uri;
181:
182: unless ($uri=~/^\/\~/) {
183: # =========================================== This is not in construction space
184: my ($resdomain,$resuser)=
185: (&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//);
186:
187: $loaderror=
188: &Apache::lonnet::overloaderror($r,
189: &Apache::lonnet::homeserver($resuser,$resdomain));
190: if ($loaderror) { return $loaderror; }
191:
192: my %content=();
193:
194: # ----------------------------------------------------------- Set document type
195:
196: $r->content_type('text/html');
197: $r->send_http_header;
198:
199: return OK if $r->header_only;
200:
201: # ------------------------------------------------------------------- Read file
202: foreach (split(/\,/,&Apache::lonnet::metadata($uri,'keys'))) {
203: $content{$_}=&Apache::lonnet::metadata($uri,$_);
204: }
205: # ------------------------------------------------------------------ Hide stuff
206:
207: unless ($ENV{'user.adv'}) {
208: foreach ('keywords','notes','abstract','subject') {
209: $content{$_}='<i>- not displayed -</i>';
210: }
211: }
212:
213: # --------------------------------------------------------------- Render Output
214: my ($thisversion)=($uri=~/\.(\d+)\.(\w+)\.meta$/);
215: my $creationdate=localtime(
216: &Apache::loncommon::unsqltime($content{'creationdate'}));
217: my $lastrevisiondate=localtime(
218: &Apache::loncommon::unsqltime($content{'lastrevisiondate'}));
219: my $language=&Apache::loncommon::languagedescription($content{'language'});
220: my $mime=&Apache::loncommon::filedescription($content{'mime'});
221: my $disuri=&Apache::lonnet::declutter($uri);
222: $disuri=~s/\.meta$//;
223: my $currentversion=&Apache::lonnet::getversion($disuri);
224: my $author=$content{'author'};
225: $author=~s/(\w+)(\:|\@)(\w+)/&authordisplay($1,$3)/gse;
226: my $owner=$content{'owner'};
227: $owner=~s/(\w+)(\:|\@)(\w+)/&authordisplay($1,$3)/gse;
228: my $versiondisplay='';
229: if ($thisversion) {
230: $versiondisplay='Version: '.$thisversion.
231: ' (most recent version: '.$currentversion.')';
232: } else {
233: $versiondisplay='Version: '.$currentversion;
234: }
235: my $customdistributionfile='';
236: if ($content{'customdistributionfile'}) {
237: $customdistributionfile='<a href="'.$content{'customdistributionfile'}.
238: '"><tt>'.$content{'customdistributionfile'}.'</tt></a>';
239: }
240: my $bodytag=&Apache::loncommon::bodytag
241: ('Catalog Information','','','',$resdomain);
242: $r->print(<<ENDHEAD);
243: <html><head><title>Catalog Information</title></head>
244: $bodytag
245: <h2>$content{'title'}</h2>
246: <h3><tt>$disuri</tt></h3>
247: $versiondisplay<br />
248: <table cellspacing=2 border=0>
249: <tr><td bgcolor='#AAAAAA'>Author(s)</td>
250: <td bgcolor="#CCCCCC">$author </td></tr>
251: <tr><td bgcolor='#AAAAAA'>Subject</td>
252: <td bgcolor="#CCCCCC">$content{'subject'} </td></tr>
253: <tr><td bgcolor='#AAAAAA'>Keyword(s)</td>
254: <td bgcolor="#CCCCCC">$content{'keywords'} </td></tr>
255: <tr><td bgcolor='#AAAAAA'>Notes</td>
256: <td bgcolor="#CCCCCC">$content{'notes'} </td></tr>
257: <tr><td bgcolor='#AAAAAA'>Abstract</td>
258: <td bgcolor="#CCCCCC">$content{'abstract'} </td></tr>
259: <tr><td bgcolor='#AAAAAA'>MIME Type</td>
260: <td bgcolor="#CCCCCC">$mime ($content{'mime'}) </td></tr>
261: <tr><td bgcolor='#AAAAAA'>Language</td>
262: <td bgcolor="#CCCCCC">$language </td></tr>
263: <tr><td bgcolor='#AAAAAA'>Creation Date</td>
264: <td bgcolor="#CCCCCC">$creationdate </td></tr>
265: <tr><td bgcolor='#AAAAAA'>
266: Last Revision Date</td><td bgcolor="#CCCCCC">$lastrevisiondate </td></tr>
267: <tr><td bgcolor='#AAAAAA'>Publisher/Owner</td>
268: <td bgcolor="#CCCCCC">$owner </td></tr>
269: <tr><td bgcolor='#AAAAAA'>Copyright/Distribution</td>
270: <td bgcolor="#CCCCCC">$content{'copyright'} </td></tr>
271: <tr><td bgcolor='#AAAAAA'>Custom Distribution File</td>
272: <td bgcolor="#CCCCCC">$customdistributionfile </td></tr>
273: </table>
274: ENDHEAD
275: delete($content{'title'});
276: delete($content{'author'});
277: delete($content{'subject'});
278: delete($content{'keywords'});
279: delete($content{'notes'});
280: delete($content{'abstract'});
281: delete($content{'mime'});
282: delete($content{'language'});
283: delete($content{'creationdate'});
284: delete($content{'lastrevisiondate'});
285: delete($content{'owner'});
286: delete($content{'copyright'});
287: if ($ENV{'user.adv'}) {
288: # ------------------------------------------------------------ Dynamic Metadata
289: $r->print(
290: '<h3>Dynamic Metadata (updated periodically)</h3>Processing ...<br>');
291: $r->rflush();
292: my %items=(
293: 'count' => 'Network-wide number of accesses (hits)',
294: 'course' => 'Network-wide number of courses using resource',
295: 'usage' => 'Number of resources using or importing resource',
296: 'clear' => 'Material presented in clear way',
297: 'depth' => 'Material covered with sufficient depth',
298: 'helpful' => 'Material is helpful',
299: 'correct' => 'Material appears to be correct',
300: 'technical' => 'Resource is technically correct',
301: 'avetries' => 'Average number of tries till solved',
302: 'stdno' => 'Total number of students who have worked on this problem',
303: 'difficulty' => 'Degree of difficulty');
304: my %dynmeta=&dynamicmeta($uri);
305: $r->print(
306: '</table><h4>Access and Usage Statistics</h4><table cellspacing=2 border=0>');
307: foreach ('count','usage','course') {
308: $r->print(
309: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
310: $dynmeta{$_}." </td></tr>\n");
311: }
312: $r->print('</table>');
313: if ($uri=~/\.(problem|exam|quiz|assess|survey|form)\.meta$/) {
314: $r->print(
315: '<h4>Assessment Statistical Data</h4><table cellspacing=2 border=0>');
316: foreach ('stdno','avetries') {
317: $r->print(
318: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
319: $dynmeta{$_}." </td></tr>\n");
320: }
321: foreach ('difficulty') {
322: $r->print(
323: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
324: &diffgraph($dynmeta{$_})."</td></tr>\n");
325: }
326: $r->print('</table>');
327: }
328: $r->print('<h4>Evaluation Data</h4><table cellspacing=2 border=0>');
329: foreach ('clear','depth','helpful','correct','technical') {
330: $r->print(
331: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
332: &evalgraph($dynmeta{$_})."</td></tr>\n");
333: }
334: $r->print('</table>');
335: $disuri=~/^(\w+)\/(\w+)\//;
336: if ((($ENV{'user.domain'} eq $1) && ($ENV{'user.name'} eq $2))
337: || ($ENV{'user.role.ca./'.$1.'/'.$2})) {
338: $r->print(
339: '<h4>Evaluation Comments (visible to author and co-authors only)</h4>'.
340: '<blockquote>'.$dynmeta{'comments'}.'</blockquote>');
341: $r->print(
342: '<h4>Error Messages (visible to author and co-authors only)</h4>');
343: my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$1,$2);
344: foreach (keys %errormsgs) {
345: if ($_=~/^\Q$disuri\E\_\d+$/) {
346: my %content=&Apache::lonmsg::unpackagemsg($errormsgs{$_});
347: $r->print('<b>'.$content{'time'}.'</b>: '.$content{'message'}.
348: '<br />');
349: }
350: }
351: }
352: # ------------------------------------------------------------- All other stuff
353: $r->print(
354: '<h3>Additional Metadata (non-standard, parameters, exports)</h3>');
355: foreach (sort keys %content) {
356: my $name=$_;
357: my $display=&Apache::lonnet::metadata($uri,$name.'.display');
358: unless ($display) { $display=$name; };
359: my $otherinfo='';
360: foreach ('name','part','type','default') {
361: if (defined(&Apache::lonnet::metadata($uri,$name.'.'.$_))) {
362: $otherinfo.=' '.$_.'='.
363: &Apache::lonnet::metadata($uri,$name.'.'.$_).'; ';
364: }
365: }
366: $r->print('<b>'.$display.':</b> '.$content{$name});
367: if ($otherinfo) {
368: $r->print(' ('.$otherinfo.')');
369: }
370: $r->print("<br>\n");
371: }
372: }
373: # ===================================================== End Resource Space Call
374: } else {
375: # ===================================================== Construction Space Call
376:
377: # ----------------------------------------------------------- Set document type
378:
379: $r->content_type('text/html');
380: $r->send_http_header;
381:
382: return OK if $r->header_only;
383: # ---------------------------------------------------------------------- Header
384: my $bodytag=&Apache::loncommon::bodytag('Edit Catalog Information');
385: my $disuri=$uri;
386: my $fn=&Apache::lonnet::filelocation('',$uri);
387: $disuri=~s/^\/\~\w+//;
388: $disuri=~s/\.meta$//;
389: my $displayfile='Catalog Information for '.$disuri;
390: if ($disuri=~/\/default$/) {
391: my $dir=$disuri;
392: $dir=~s/default$//;
393: $displayfile='Default Cataloging Information for Directory '.$dir;
394: }
395: %Apache::lonpublisher::metadatafields=();
396: %Apache::lonpublisher::metadatakeys=();
397: &Apache::lonpublisher::metaeval(&Apache::lonnet::getfile($fn));
398: $r->print(<<ENDEDIT);
399: <html><head><title>Edit Catalog Information</title></head>
400: $bodytag
401: <h1>$displayfile</h1>
402: <form method="post">
403: ENDEDIT
404: foreach ('author','title','subject','keywords','abstract','notes',
405: 'copyright','customdistributionfile','language') {
406: if ($ENV{'form.new_'.$_}) {
407: $Apache::lonpublisher::metadatafields{$_}=$ENV{'form.new_'.$_};
408: }
409: $r->print(
410: &Apache::lonpublisher::textfield($_,'new_'.$_,
411: $Apache::lonpublisher::metadatafields{$_}));
412: }
413: if ($ENV{'form.store'}) {
414: my $mfh;
415: unless ($mfh=Apache::File->new('>'.$fn)) {
416: $r->print(
417: '<p><font color=red>Could not write metadata, FAIL</font>');
418: } else {
419: foreach (sort keys %Apache::lonpublisher::metadatafields) {
420: unless ($_=~/\./) {
421: my $unikey=$_;
422: $unikey=~/^([A-Za-z]+)/;
423: my $tag=$1;
424: $tag=~tr/A-Z/a-z/;
425: print $mfh "\n\<$tag";
426: foreach
427: (split(/\,/,$Apache::lonpublisher::metadatakeys{$unikey})) {
428: my $value=
429: $Apache::lonpublisher::metadatafields{$unikey.'.'.$_};
430: $value=~s/\"/\'\'/g;
431: print $mfh ' '.$_.'="'.$value.'"';
432: }
433: print $mfh '>'.
434: &HTML::Entities::encode($Apache::lonpublisher::metadatafields{$unikey})
435: .'</'.$tag.'>';
436: }
437: }
438: $r->print('<p>Wrote Metadata');
439: }
440: }
441: $r->print(
442: '<br /><input type="submit" name="store" value="Store Catalog Information"></form></body></html>');
443: return OK;
444: }
445: }
446:
447: 1;
448: __END__
449:
450:
451:
452:
453:
454:
455:
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonmeta.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface