1: # The LearningOnline Network with CAPA
2: # Metadata display handler
3: #
4: # $Id: lonmeta.pm,v 1.41 2003/12/22 21:44:17 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: use Apache::lonlocal;
43:
44: # ----------------------------------------- Fetch and evaluate dynamic metadata
45:
46: sub dynamicmeta {
47: my $url=&Apache::lonnet::declutter(shift);
48: $url=~s/\.meta$//;
49: my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
50: my $regexp=$url;
51: $regexp=~s/(\W)/\\$1/g;
52: $regexp='___'.$regexp.'___';
53: my %evaldata=&Apache::lonnet::dump('nohist_resevaldata',$adomain,
54: $aauthor,$regexp);
55: my %sum=();
56: my %cnt=();
57: my %concat=();
58: my %listitems=(
59: 'course' => 'add',
60: 'goto' => 'add',
61: 'comefrom' => 'add',
62: 'avetries' => 'avg',
63: 'stdno' => 'add',
64: 'difficulty' => 'avg',
65: 'clear' => 'avg',
66: 'technical' => 'avg',
67: 'helpful' => 'avg',
68: 'correct' => 'avg',
69: 'depth' => 'avg',
70: 'comments' => 'app',
71: 'usage' => 'cnt'
72: );
73: while ($_=each(%evaldata)) {
74: my ($item,$purl,$cat)=split(/___/,$_);
75: ### Apache->request->print("\n".$_.' - '.$item.'<br />');
76: if (defined($cnt{$cat})) { $cnt{$cat}++; } else { $cnt{$cat}=1; }
77: unless ($listitems{$cat} eq 'app') {
78: if (defined($sum{$cat})) {
79: $sum{$cat}+=$evaldata{$_};
80: $concat{$cat}.=','.$item;
81: } else {
82: $sum{$cat}=$evaldata{$_};
83: $concat{$cat}=$item;
84: }
85: } else {
86: if (defined($sum{$cat})) {
87: if ($evaldata{$_}) {
88: $sum{$cat}.='<hr>'.$evaldata{$_};
89: }
90: } else {
91: $sum{$cat}=''.$evaldata{$_};
92: }
93: }
94: }
95: my %returnhash=();
96: while ($_=each(%cnt)) {
97: if ($listitems{$_} eq 'avg') {
98: $returnhash{$_}=int(($sum{$_}/$cnt{$_})*100.0+0.5)/100.0;
99: } elsif ($listitems{$_} eq 'cnt') {
100: $returnhash{$_}=$cnt{$_};
101: } else {
102: $returnhash{$_}=$sum{$_};
103: }
104: $returnhash{$_.'_list'}=$concat{$_};
105: ### Apache->request->print("\n<hr />".$_.': '.$returnhash{$_}.'<br />'.$returnhash{$_.'_list'});
106: }
107: #
108: # Deal with 'count' seperately
109: $returnhash{'count'} = &access_count($url,$aauthor,$adomain);
110:
111: return %returnhash;
112: }
113:
114: sub access_count {
115: my ($src,$author,$adomain) = @_;
116: my %countdata=&Apache::lonnet::dump('nohist_accesscount',$adomain,
117: $author,$src);
118: if (! exists($countdata{$src})) {
119: return 'Not Available';
120: } else {
121: return $countdata{$src};
122: }
123: }
124:
125: # ------------------------------------- Try to make an alt tag if there is none
126:
127: sub alttag {
128: my ($base,$src)=@_;
129: my $fullpath=&Apache::lonnet::hreflocation($base,$src);
130: my $alttag=&Apache::lonnet::metadata($fullpath,'title').' '.
131: &Apache::lonnet::metadata($fullpath,'subject').' '.
132: &Apache::lonnet::metadata($fullpath,'abstract');
133: $alttag=~s/\s+/ /gs;
134: $alttag=~s/\"//gs;
135: $alttag=~s/\'//gs;
136: $alttag=~s/\s+$//gs;
137: $alttag=~s/^\s+//gs;
138: if ($alttag) { return $alttag; } else
139: { return 'No information available'; }
140: }
141:
142: # -------------------------------------------------------------- Author display
143:
144: sub authordisplay {
145: my ($aname,$adom)=@_;
146: return &Apache::loncommon::aboutmewrapper(
147: &Apache::loncommon::plainname($aname,$adom),
148: $aname,$adom).' <tt>['.$aname.'@'.$adom.']</tt>';
149: }
150:
151: # -------------------------------------------------------------- Pretty display
152:
153: sub evalgraph {
154: my $value=shift;
155: unless ($value) { return ''; }
156: my $val=int($value*10.+0.5)-10;
157: my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
158: if ($val>=20) {
159: $output.='<td width=20 bgcolor="#555555">  </td>';
160: } else {
161: $output.='<td width='.($val).' bgcolor="#555555"> </td>'.
162: '<td width='.(20-$val).' bgcolor="#FF3333"> </td>';
163: }
164: $output.='<td bgcolor="#FFFF33"> </td>';
165: if ($val>20) {
166: $output.='<td width='.($val-20).' bgcolor="#33FF33"> </td>'.
167: '<td width='.(40-$val).' bgcolor="#555555"> </td>';
168: } else {
169: $output.='<td width=20 bgcolor="#555555">  </td>';
170: }
171: $output.='<td> ('.$value.') </td></tr></table>';
172: return $output;
173: }
174:
175: sub diffgraph {
176: my $value=shift;
177: unless ($value) { return ''; }
178: my $val=int(40.0*$value+0.5);
179: my @colors=('#FF9933','#EEAA33','#DDBB33','#CCCC33',
180: '#BBDD33','#CCCC33','#DDBB33','#EEAA33');
181: my $output='<table border=0 cellpadding=0 cellspacing=0><tr>';
182: for (my $i=0;$i<8;$i++) {
183: if ($val>$i*5) {
184: $output.='<td width=5 bgcolor="'.$colors[$i].'"> </td>';
185: } else {
186: $output.='<td width=5 bgcolor="#555555"> </td>';
187: }
188: }
189: $output.='<td> ('.$value.') </td></tr></table>';
190: return $output;
191: }
192:
193: # ================================================================ Main Handler
194:
195: sub handler {
196: my $r=shift;
197:
198: my $loaderror=&Apache::lonnet::overloaderror($r);
199: if ($loaderror) { return $loaderror; }
200:
201:
202: my $uri=$r->uri;
203:
204: unless ($uri=~/^\/\~/) {
205: # =========================================== This is not in construction space
206: my ($resdomain,$resuser)=
207: (&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//);
208:
209: $loaderror=
210: &Apache::lonnet::overloaderror($r,
211: &Apache::lonnet::homeserver($resuser,$resdomain));
212: if ($loaderror) { return $loaderror; }
213:
214: my %content=();
215:
216: # ----------------------------------------------------------- Set document type
217:
218: &Apache::loncommon::content_type($r,'text/html');
219: $r->send_http_header;
220:
221: return OK if $r->header_only;
222:
223: # ------------------------------------------------------------------- Read file
224: foreach (split(/\,/,&Apache::lonnet::metadata($uri,'keys'))) {
225: $content{$_}=&Apache::lonnet::metadata($uri,$_);
226: }
227: # ------------------------------------------------------------------ Hide stuff
228:
229: unless ($ENV{'user.adv'}) {
230: foreach ('keywords','notes','abstract','subject') {
231: $content{$_}='<i>- '.&mt('not displayed').' -</i>';
232: }
233: }
234:
235: # --------------------------------------------------------------- Render Output
236: my ($thisversion)=($uri=~/\.(\d+)\.(\w+)\.meta$/);
237: my $creationdate=&Apache::lonlocal::locallocaltime(
238: &Apache::loncommon::unsqltime($content{'creationdate'}));
239: my $lastrevisiondate=&Apache::lonlocal::locallocaltime(
240: &Apache::loncommon::unsqltime($content{'lastrevisiondate'}));
241: my $language=&Apache::loncommon::languagedescription($content{'language'});
242: my $mime=&Apache::loncommon::filedescription($content{'mime'});
243: my $disuri=&Apache::lonnet::declutter($uri);
244: $disuri=~s/\.meta$//;
245: my $currentversion=&Apache::lonnet::getversion($disuri);
246: my $author=$content{'author'};
247: $author=~s/(\w+)(\:|\@)(\w+)/&authordisplay($1,$3)/gse;
248: my $owner=$content{'owner'};
249: $owner=~s/(\w+)(\:|\@)(\w+)/&authordisplay($1,$3)/gse;
250: my $versiondisplay='';
251: if ($thisversion) {
252: $versiondisplay=&mt('Version').': '.$thisversion.
253: ' ('.&mt('most recent version').': '.$currentversion.')';
254: } else {
255: $versiondisplay='Version: '.$currentversion;
256: }
257: my $customdistributionfile='';
258: if ($content{'customdistributionfile'}) {
259: $customdistributionfile='<a href="'.$content{'customdistributionfile'}.
260: '"><tt>'.$content{'customdistributionfile'}.'</tt></a>';
261: }
262:
263: my $obsolete=$content{'obsolete'};
264: my $obsoletereplace=$content{'obsoletereplacement'};
265: my $obsoletewarning='';
266: if (($obsolete) && ($ENV{'user.adv'})) {
267: $obsoletewarning='<p><font color="red">'.&mt('This resource has been marked obsolete by the author(s)').'</font></p>';
268: }
269:
270: my %lt=&Apache::lonlocal::texthash(
271: 'au' =>'Author(s)',
272: 'sb' => 'Subject',
273: 'kw' => 'Keyword(s)',
274: 'no' => 'Notes',
275: 'ab' => 'Abstract',
276: 'mi' => 'MIME Type',
277: 'la' => 'Language',
278: 'cd' => 'Creation Date',
279: 'pu' => 'Publisher/Owner',
280: 'co' => 'Copyright/Distribution',
281: 'cf' => 'Custom Distribution File',
282: 'ob' => 'Obsolete',
283: 'or' =>
284: 'Suggested Replacement for Obsolete File');
285: my $bodytag=&Apache::loncommon::bodytag
286: ('Catalog Information','','','',$resdomain);
287: $r->print(<<ENDHEAD);
288: <html><head><title>Catalog Information</title></head>
289: $bodytag
290: <h2>$content{'title'}</h2>
291: <h3><tt>$disuri</tt></h3>
292: $obsoletewarning
293: $versiondisplay<br />
294: <table cellspacing=2 border=0>
295: <tr><td bgcolor='#AAAAAA'>$lt{'au'}</td>
296: <td bgcolor="#CCCCCC">$author </td></tr>
297: <tr><td bgcolor='#AAAAAA'>$lt{'sb'}</td>
298: <td bgcolor="#CCCCCC">$content{'subject'} </td></tr>
299: <tr><td bgcolor='#AAAAAA'>$lt{'kw'}</td>
300: <td bgcolor="#CCCCCC">$content{'keywords'} </td></tr>
301: <tr><td bgcolor='#AAAAAA'>$lt{'no'}</td>
302: <td bgcolor="#CCCCCC">$content{'notes'} </td></tr>
303: <tr><td bgcolor='#AAAAAA'>$lt{'ab'}</td>
304: <td bgcolor="#CCCCCC">$content{'abstract'} </td></tr>
305: <tr><td bgcolor='#AAAAAA'>$lt{'mi'}</td>
306: <td bgcolor="#CCCCCC">$mime ($content{'mime'}) </td></tr>
307: <tr><td bgcolor='#AAAAAA'>$lt{'la'}</td>
308: <td bgcolor="#CCCCCC">$language </td></tr>
309: <tr><td bgcolor='#AAAAAA'>$lt{'cd'}</td>
310: <td bgcolor="#CCCCCC">$creationdate </td></tr>
311: <tr><td bgcolor='#AAAAAA'>
312: Last Revision Date</td><td bgcolor="#CCCCCC">$lastrevisiondate </td></tr>
313: <tr><td bgcolor='#AAAAAA'>$lt{'pu'}</td>
314: <td bgcolor="#CCCCCC">$owner </td></tr>
315: <tr><td bgcolor='#AAAAAA'>$lt{'co'}</td>
316: <td bgcolor="#CCCCCC">$content{'copyright'} </td></tr>
317: <tr><td bgcolor='#AAAAAA'>$lt{'cf'}</td>
318: <td bgcolor="#CCCCCC">$customdistributionfile </td></tr>
319: <tr><td bgcolor='#AAAAAA'>$lt{'ob'}</td>
320: <td bgcolor="#CCCCCC">$obsolete </td></tr>
321: <tr><td bgcolor='#AAAAAA'>$lt{'or'}</td>
322: <td bgcolor="#CCCCCC">$obsoletereplace </td></tr>
323: </table>
324: ENDHEAD
325: delete($content{'title'});
326: delete($content{'author'});
327: delete($content{'subject'});
328: delete($content{'keywords'});
329: delete($content{'notes'});
330: delete($content{'abstract'});
331: delete($content{'mime'});
332: delete($content{'language'});
333: delete($content{'creationdate'});
334: delete($content{'lastrevisiondate'});
335: delete($content{'owner'});
336: delete($content{'copyright'});
337: delete($content{'customdistributionfile'});
338: delete($content{'obsolete'});
339: delete($content{'obsoletereplacement'});
340: if ($ENV{'user.adv'}) {
341: # ------------------------------------------------------------ Dynamic Metadata
342: $r->print(
343: '<h3>'.&mt('Dynamic Metadata').' ('.
344: &mt('updated periodically').')</h3>'.&mt('Processing').
345: ' ...<br>');
346: $r->rflush();
347: my %items=&Apache::lonlocal::texthash(
348: 'count' => 'Network-wide number of accesses (hits)',
349: 'course' => 'Network-wide number of courses using resource',
350: 'usage' => 'Number of resources using or importing resource',
351: 'goto' => 'Number of resources that follow this resource in maps',
352: 'comefrom' => 'Number of resources that lead up to this resource in maps',
353: 'clear' => 'Material presented in clear way',
354: 'depth' => 'Material covered with sufficient depth',
355: 'helpful' => 'Material is helpful',
356: 'correct' => 'Material appears to be correct',
357: 'technical' => 'Resource is technically correct',
358: 'avetries' => 'Average number of tries till solved',
359: 'stdno' => 'Total number of students who have worked on this problem',
360: 'difficulty' => 'Degree of difficulty');
361: my %dynmeta=&dynamicmeta($uri);
362: $r->print(
363: '</table><h4>'.&mt('Access and Usage Statistics').'</h4><table cellspacing=2 border=0>');
364: foreach ('count') {
365: $r->print(
366: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
367: $dynmeta{$_}." </td></tr>\n");
368: }
369: foreach my $cat ('usage','comefrom','goto') {
370: $r->print(
371: '<tr><td bgcolor="#AAAAAA">'.$items{$cat}.'</td><td bgcolor="#CCCCCC">'.
372: $dynmeta{$cat}.'<font size="-1"><ul>'.join("\n",
373: map { my $murl=$_;
374: '<li><a href="'.&Apache::lonnet::clutter($murl).'" target="preview">'.
375: &Apache::lonnet::gettitle($murl).' [<tt>'.$murl
376: .'</tt>]</a></li>' }
377: split(/\,/,$dynmeta{$cat.'_list'}))."</ul></font></td></tr>\n");
378: }
379: foreach my $cat ('course') {
380: $r->print(
381: '<tr><td bgcolor="#AAAAAA">'.$items{$cat}.'</td><td bgcolor="#CCCCCC">'.
382: $dynmeta{$cat}.'<font size="-1"><ul>'.join("\n",
383: map { my %courseinfo=&Apache::lonnet::coursedescription($_);
384: '<li><a href="/public/'.
385: $courseinfo{'domain'}.'/'.$courseinfo{'num'}.'/syllabus" target="preview">'.
386: $courseinfo{'description'}.'</a></li>' }
387: split(/\,/,$dynmeta{$cat.'_list'}))."</ul></font></td></tr>\n");
388: }
389: $r->print('</table>');
390: if ($uri=~/\.(problem|exam|quiz|assess|survey|form)\.meta$/) {
391: $r->print(
392: '<h4>'.&mt('Assessment Statistical Data').'</h4><table cellspacing=2 border=0>');
393: foreach ('stdno','avetries') {
394: $r->print(
395: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
396: $dynmeta{$_}." </td></tr>\n");
397: }
398: foreach ('difficulty') {
399: $r->print(
400: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
401: &diffgraph($dynmeta{$_})."</td></tr>\n");
402: }
403: $r->print('</table>');
404: }
405: $r->print('<h4>'.&mt('Evaluation Data').'</h4><table cellspacing=2 border=0>');
406: foreach ('clear','depth','helpful','correct','technical') {
407: $r->print(
408: '<tr><td bgcolor="#AAAAAA">'.$items{$_}.'</td><td bgcolor="#CCCCCC">'.
409: &evalgraph($dynmeta{$_})."</td></tr>\n");
410: }
411: $r->print('</table>');
412: $disuri=~/^(\w+)\/(\w+)\//;
413: if ((($ENV{'user.domain'} eq $1) && ($ENV{'user.name'} eq $2))
414: || ($ENV{'user.role.ca./'.$1.'/'.$2})) {
415: $r->print(
416: '<h4>'.&mt('Evaluation Comments').' ('.&mt('visible to author and co-authors only').')</h4>'.
417: '<blockquote>'.$dynmeta{'comments'}.'</blockquote>');
418: $r->print(
419: '<h4>'.&mt('Error Messages').' ('.
420: &mt('visible to author and co-authors only').')</h4>');
421: my %errormsgs=&Apache::lonnet::dump('nohist_res_msgs',$1,$2);
422: foreach (keys %errormsgs) {
423: if ($_=~/^\Q$disuri\E\_\d+$/) {
424: my %content=&Apache::lonmsg::unpackagemsg($errormsgs{$_});
425: $r->print('<b>'.$content{'time'}.'</b>: '.$content{'message'}.
426: '<br />');
427: }
428: }
429: }
430: # ------------------------------------------------------------- All other stuff
431: $r->print(
432: '<h3>'.&mt('Additional Metadata (non-standard, parameters, exports)').'</h3>');
433: foreach (sort keys %content) {
434: my $name=$_;
435: unless ($name=~/\.display$/) {
436: my $display=&Apache::lonnet::metadata($uri,$name.'.display');
437: unless ($display) { $display=$name; };
438: my $otherinfo='';
439: foreach ('name','part','type','default') {
440: if (defined(&Apache::lonnet::metadata($uri,$name.'.'.$_))) {
441: $otherinfo.=' '.$_.'='.
442: &Apache::lonnet::metadata($uri,$name.'.'.$_).'; ';
443: }
444: }
445: $r->print('<b>'.$display.':</b> '.$content{$name});
446: if ($otherinfo) {
447: $r->print(' ('.$otherinfo.')');
448: }
449: $r->print("<br>\n");
450: }
451: }
452: }
453: # ===================================================== End Resource Space Call
454: } else {
455: # ===================================================== Construction Space Call
456:
457: # ----------------------------------------------------------- Set document type
458:
459: $r->content_type('text/html');
460: $r->send_http_header;
461:
462: return OK if $r->header_only;
463: # ---------------------------------------------------------------------- Header
464: my $bodytag=&Apache::loncommon::bodytag('Edit Catalog Information');
465: my $disuri=$uri;
466: my $fn=&Apache::lonnet::filelocation('',$uri);
467: $disuri=~s/^\/\~\w+//;
468: $disuri=~s/\.meta$//;
469: my $displayfile='Catalog Information for '.$disuri;
470: if ($disuri=~/\/default$/) {
471: my $dir=$disuri;
472: $dir=~s/default$//;
473: $displayfile=&mt('Default Cataloging Information for Directory').' '.
474: $dir;
475: }
476: %Apache::lonpublisher::metadatafields=();
477: %Apache::lonpublisher::metadatakeys=();
478: &Apache::lonpublisher::metaeval(&Apache::lonnet::getfile($fn));
479: $r->print(<<ENDEDIT);
480: <html><head><title>Edit Catalog Information</title></head>
481: $bodytag
482: <h1>$displayfile</h1>
483: <form method="post">
484: ENDEDIT
485: foreach ('author','title','subject','keywords','abstract','notes',
486: 'copyright','customdistributionfile','language',
487: 'obsolete','obsoletereplacement') {
488: if ($ENV{'form.new_'.$_}) {
489: $Apache::lonpublisher::metadatafields{$_}=$ENV{'form.new_'.$_};
490: }
491: if (m/copyright/) {
492: $r->print(&Apache::lonpublisher::selectbox($_,'new_'.$_,
493: ($Apache::lonpublisher::metadatafields{$_}?
494: $Apache::lonpublisher::metadatafields{$_}:'default'),
495: \&Apache::loncommon::copyrightdescription,
496: (&Apache::loncommon::copyrightids)));
497: } elsif (m/language/) {
498: $r->print(&Apache::lonpublisher::selectbox($_,'new_'.$_,
499: $Apache::lonpublisher::metadatafields{$_},
500: \&Apache::loncommon::languagedescription,
501: (&Apache::loncommon::languageids)));
502: } else {
503: $r->print(&Apache::lonpublisher::textfield($_,'new_'.$_,
504: $Apache::lonpublisher::metadatafields{$_}));
505: }
506: }
507: if ($ENV{'form.store'}) {
508: my $mfh;
509: unless ($mfh=Apache::File->new('>'.$fn)) {
510: $r->print(
511: '<p><font color=red>'.&mt('Could not write metadata').', '.
512: &mt('FAIL').'</font>');
513: } else {
514: foreach (sort keys %Apache::lonpublisher::metadatafields) {
515: unless ($_=~/\./) {
516: my $unikey=$_;
517: $unikey=~/^([A-Za-z]+)/;
518: my $tag=$1;
519: $tag=~tr/A-Z/a-z/;
520: print $mfh "\n\<$tag";
521: foreach
522: (split(/\,/,$Apache::lonpublisher::metadatakeys{$unikey})) {
523: my $value=
524: $Apache::lonpublisher::metadatafields{$unikey.'.'.$_};
525: $value=~s/\"/\'\'/g;
526: print $mfh ' '.$_.'="'.$value.'"';
527: }
528: print $mfh '>'.
529: &HTML::Entities::encode($Apache::lonpublisher::metadatafields{$unikey})
530: .'</'.$tag.'>';
531: }
532: }
533: $r->print('<p>'.&mt('Wrote Metadata'));
534: }
535: }
536: $r->print(
537: '<br /><input type="submit" name="store" value="'.
538: &mt('Store Catalog Information').'"></form></body></html>');
539: return OK;
540: }
541: }
542:
543: 1;
544: __END__
545:
546:
547:
548:
549:
550:
551:
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