1: # The LearningOnline Network with CAPA
2: # Metadata display handler
3: #
4: # $Id: lonmeta.pm,v 1.140 2005/12/19 16:00:05 banghart 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:
29: package Apache::lonmeta;
30:
31: use strict;
32: use LONCAPA::lonmetadata();
33: use Apache::Constants qw(:common);
34: use Apache::lonnet;
35: use Apache::loncommon();
36: use Apache::lonhtmlcommon();
37: use Apache::lonmsg;
38: use Apache::lonpublisher;
39: use Apache::lonlocal;
40: use Apache::lonmysql;
41: use Apache::lonmsg;
42:
43:
44: ############################################################
45: ############################################################
46: ##
47: ## &get_dynamic_metadata_from_sql($url)
48: ##
49: ## Queries sql database for dynamic metdata
50: ## Returns a hash of hashes, with keys of urls which match $url
51: ## Returned fields are given below.
52: ##
53: ## Examples:
54: ##
55: ## %DynamicMetadata = &Apache::lonmeta::get_dynmaic_metadata_from_sql
56: ## ('/res/msu/korte/');
57: ##
58: ## $DynamicMetadata{'/res/msu/korte/example.problem'}->{$field}
59: ##
60: ############################################################
61: ############################################################
62: sub get_dynamic_metadata_from_sql {
63: my ($url) = shift();
64: my ($authordom,$author)=($url=~m:^/res/(\w+)/(\w+)/:);
65: if (! defined($authordom)) {
66: $authordom = shift();
67: }
68: if (! defined($author)) {
69: $author = shift();
70: }
71: if (! defined($authordom) || ! defined($author)) {
72: return ();
73: }
74: my @Fields = ('url','count','course',
75: 'goto','goto_list',
76: 'comefrom','comefrom_list',
77: 'sequsage','sequsage_list',
78: 'stdno','stdno_list',
79: 'dependencies',
80: 'avetries','avetries_list',
81: 'difficulty','difficulty_list',
82: 'disc','disc_list',
83: 'clear','technical','correct',
84: 'helpful','depth');
85: #
86: my $query = 'SELECT '.join(',',@Fields).
87: ' FROM metadata WHERE url LIKE "'.$url.'%"';
88: my $server = &Apache::lonnet::homeserver($author,$authordom);
89: my $reply = &Apache::lonnet::metadata_query($query,undef,undef,
90: ,[$server]);
91: return () if (! defined($reply) || ref($reply) ne 'HASH');
92: my $filename = $reply->{$server};
93: if (! defined($filename) || $filename =~ /^error/) {
94: return ();
95: }
96: my $max_time = time + 10; # wait 10 seconds for results at most
97: my %ReturnHash;
98: #
99: # Look for results
100: my $finished = 0;
101: while (! $finished && time < $max_time) {
102: my $datafile=$Apache::lonnet::perlvar{'lonDaemons'}.'/tmp/'.$filename;
103: if (! -e "$datafile.end") { next; }
104: my $fh;
105: if (!($fh=Apache::File->new($datafile))) { next; }
106: while (my $result = <$fh>) {
107: chomp($result);
108: next if (! $result);
109: my @Data =
110: map {
111: &Apache::lonnet::unescape($_);
112: } split(',',$result);
113: my $url = $Data[0];
114: for (my $i=0;$i<=$#Fields;$i++) {
115: $ReturnHash{$url}->{$Fields[$i]}=$Data[$i];
116: }
117: }
118: $finished = 1;
119: }
120: #
121: return %ReturnHash;
122: }
123:
124:
125: # Fetch and evaluate dynamic metadata
126: sub dynamicmeta {
127: my $url=&Apache::lonnet::declutter(shift);
128: $url=~s/\.meta$//;
129: my ($adomain,$aauthor)=($url=~/^(\w+)\/(\w+)\//);
130: my $regexp=$url;
131: $regexp=~s/(\W)/\\$1/g;
132: $regexp='___'.$regexp.'___';
133: my %evaldata=&Apache::lonnet::dump('nohist_resevaldata',$adomain,
134: $aauthor,$regexp);
135: my %DynamicData = &LONCAPA::lonmetadata::process_reseval_data(\%evaldata);
136: my %Data = &LONCAPA::lonmetadata::process_dynamic_metadata($url,
137: \%DynamicData);
138: #
139: # Deal with 'count' separately
140: $Data{'count'} = &access_count($url,$aauthor,$adomain);
141: #
142: # Debugging code I will probably need later
143: if (0) {
144: &Apache::lonnet::logthis('Dynamic Metadata');
145: while(my($k,$v)=each(%Data)){
146: &Apache::lonnet::logthis(' "'.$k.'"=>"'.$v.'"');
147: }
148: &Apache::lonnet::logthis('-------------------');
149: }
150: return %Data;
151: }
152:
153: sub access_count {
154: my ($src,$author,$adomain) = @_;
155: my %countdata=&Apache::lonnet::dump('nohist_accesscount',$adomain,
156: $author,$src);
157: if (! exists($countdata{$src})) {
158: return &mt('Not Available');
159: } else {
160: return $countdata{$src};
161: }
162: }
163:
164: # Try to make an alt tag if there is none
165: sub alttag {
166: my ($base,$src)=@_;
167: my $fullpath=&Apache::lonnet::hreflocation($base,$src);
168: my $alttag=&Apache::lonnet::metadata($fullpath,'title').' '.
169: &Apache::lonnet::metadata($fullpath,'subject').' '.
170: &Apache::lonnet::metadata($fullpath,'abstract');
171: $alttag=~s/\s+/ /gs;
172: $alttag=~s/\"//gs;
173: $alttag=~s/\'//gs;
174: $alttag=~s/\s+$//gs;
175: $alttag=~s/^\s+//gs;
176: if ($alttag) {
177: return $alttag;
178: } else {
179: return &mt('No information available');
180: }
181: }
182:
183: # Author display
184: sub authordisplay {
185: my ($aname,$adom)=@_;
186: return &Apache::loncommon::aboutmewrapper
187: (&Apache::loncommon::plainname($aname,$adom),
188: $aname,$adom,'preview').' <tt>['.$aname.'@'.$adom.']</tt>';
189: }
190:
191: # Pretty display
192: sub evalgraph {
193: my $value=shift;
194: if (! $value) {
195: return '';
196: }
197: my $val=int($value*10.+0.5)-10;
198: my $output='<table border="0" cellpadding="0" cellspacing="0"><tr>';
199: if ($val>=20) {
200: $output.='<td width="20" bgcolor="#555555">  </td>';
201: } else {
202: $output.='<td width="'.($val).'" bgcolor="#555555"> </td>'.
203: '<td width="'.(20-$val).'" bgcolor="#FF3333"> </td>';
204: }
205: $output.='<td bgcolor="#FFFF33"> </td>';
206: if ($val>20) {
207: $output.='<td width="'.($val-20).'" bgcolor="#33FF33"> </td>'.
208: '<td width="'.(40-$val).'" bgcolor="#555555"> </td>';
209: } else {
210: $output.='<td width="20" bgcolor="#555555">  </td>';
211: }
212: $output.='<td> ('.sprintf("%5.2f",$value).') </td></tr></table>';
213: return $output;
214: }
215:
216: sub diffgraph {
217: my $value=shift;
218: if (! $value) {
219: return '';
220: }
221: my $val=int(40.0*$value+0.5);
222: my @colors=('#FF9933','#EEAA33','#DDBB33','#CCCC33',
223: '#BBDD33','#CCCC33','#DDBB33','#EEAA33');
224: my $output='<table border="0" cellpadding="0" cellspacing="0"><tr>';
225: for (my $i=0;$i<8;$i++) {
226: if ($val>$i*5) {
227: $output.='<td width="5" bgcolor="'.$colors[$i].'"> </td>';
228: } else {
229: $output.='<td width="5" bgcolor="#555555"> </td>';
230: }
231: }
232: $output.='<td> ('.sprintf("%3.2f",$value).') </td></tr></table>';
233: return $output;
234: }
235:
236:
237: # The field names
238: sub fieldnames {
239: my $file_type=shift;
240: my %fields =
241: ('title' => 'Title',
242: 'author' =>'Author(s)',
243: 'authorspace' => 'Author Space',
244: 'modifyinguser' => 'Last Modifying User',
245: 'subject' => 'Subject',
246: 'standards' => 'Standards',
247: 'keywords' => 'Keyword(s)',
248: 'notes' => 'Notes',
249: 'abstract' => 'Abstract',
250: 'lowestgradelevel' => 'Lowest Grade Level',
251: 'highestgradelevel' => 'Highest Grade Level',
252: 'courserestricted' => 'Course Restricting Metadata');
253:
254: if (! defined($file_type) || $file_type ne 'portfolio') {
255: %fields =
256: (%fields,
257: 'domain' => 'Domain',
258: 'mime' => 'MIME Type',
259: 'language' => 'Language',
260: 'creationdate' => 'Creation Date',
261: 'lastrevisiondate' => 'Last Revision Date',
262: 'owner' => 'Publisher/Owner',
263: 'copyright' => 'Copyright/Distribution',
264: 'customdistributionfile' => 'Custom Distribution File',
265: 'sourceavail' => 'Source Available',
266: 'sourcerights' => 'Source Custom Distribution File',
267: 'obsolete' => 'Obsolete',
268: 'obsoletereplacement' => 'Suggested Replacement for Obsolete File',
269: 'count' => 'Network-wide number of accesses (hits)',
270: 'course' => 'Network-wide number of courses using resource',
271: 'course_list' => 'Network-wide courses using resource',
272: 'sequsage' => 'Number of resources using or importing resource',
273: 'sequsage_list' => 'Resources using or importing resource',
274: 'goto' => 'Number of resources that follow this resource in maps',
275: 'goto_list' => 'Resources that follow this resource in maps',
276: 'comefrom' => 'Number of resources that lead up to this resource in maps',
277: 'comefrom_list' => 'Resources that lead up to this resource in maps',
278: 'clear' => 'Material presented in clear way',
279: 'depth' => 'Material covered with sufficient depth',
280: 'helpful' => 'Material is helpful',
281: 'correct' => 'Material appears to be correct',
282: 'technical' => 'Resource is technically correct',
283: 'avetries' => 'Average number of tries till solved',
284: 'stdno' => 'Total number of students who have worked on this problem',
285: 'difficulty' => 'Degree of difficulty',
286: 'disc' => 'Degree of discrimination',
287: 'dependencies' => 'Resources used by this resource',
288: );
289: }
290: return &Apache::lonlocal::texthash(%fields);
291: }
292: sub pre_select_course {
293: my ($r,$uri) = @_;
294: my $output;
295: my $fn=&Apache::lonnet::filelocation('',$uri);
296: my $disuri=$uri;
297: %Apache::lonpublisher::metadatafields=();
298: %Apache::lonpublisher::metadatakeys=();
299: my $result=&Apache::lonnet::getfile($fn);
300: if ($result == -1){
301: $r->print('Creating new '.$disuri);
302: } else {
303: &Apache::lonpublisher::metaeval($result);
304: }
305: $r->print('<form method="post" action="" >');
306: $output = &select_course();
307: $r->print($output.'<br /><input type="submit" name="store" value="'.
308: &mt('Select Metadata Course Restrictions').'">');
309: $r->print('</form>');
310: return;
311: }
312: sub select_course {
313: my %courses;
314: my $output;
315: my $selected;
316: foreach my $key (keys (%env)) {
317: if ($key =~ m/\.metadata\./) {
318: $key =~ m/^course\.(.+)(\.metadata.+$)/;
319: my $course = $1;
320: my $coursekey = 'course.'.$course.'.description';
321: my $value = $env{$coursekey};
322: $courses{$coursekey} = $value;
323: }
324: }
325: &Apache::lonnet::logthis('the restricted is'.$Apache::lonpublisher::metadatafields{'courserestricted'});
326: my $meta_not_found = 1;
327: if ($Apache::lonpublisher::metadatafields{'courserestricted'} eq 'none') {
328: $selected = ' SELECTED ';
329: } else {
330: $selected = '';
331: }
332: $output .= '<select name="new_courserestricted" >';
333: $output .= '<option value="none" '.$selected.'>None</option>';
334: foreach my $key (keys (%courses)) {
335: $key =~ m/(^.+)\.description$/;
336: if ($Apache::lonpublisher::metadatafields{'courserestricted'} eq $1) {
337: $selected = ' SELECTED ';
338: } else {
339: $selected = '';
340: }
341: $output .= '<option value="'.$1.'"'.$selected.'>';
342: $output .= $courses{$key};
343: $output .= '</option>';
344: }
345: $output .= '</select><br />';
346: return ($output);
347: }
348: # Pretty printing of metadata field
349:
350: sub prettyprint {
351: my ($type,$value,$target,$prefix,$form,$noformat)=@_;
352: # $target,$prefix,$form are optional and for filecrumbs only
353: if (! defined($value)) {
354: return ' ';
355: }
356: # Title
357: if ($type eq 'title') {
358: return '<font size="+1" face="arial">'.$value.'</font>';
359: }
360: # Dates
361: if (($type eq 'creationdate') ||
362: ($type eq 'lastrevisiondate')) {
363: return ($value?&Apache::lonlocal::locallocaltime(
364: &Apache::lonmysql::unsqltime($value)):
365: &mt('not available'));
366: }
367: # Language
368: if ($type eq 'language') {
369: return &Apache::loncommon::languagedescription($value);
370: }
371: # Copyright
372: if ($type eq 'copyright') {
373: return &Apache::loncommon::copyrightdescription($value);
374: }
375: # Copyright
376: if ($type eq 'sourceavail') {
377: return &Apache::loncommon::source_copyrightdescription($value);
378: }
379: # MIME
380: if ($type eq 'mime') {
381: return '<img src="'.&Apache::loncommon::icon($value).'" /> '.
382: &Apache::loncommon::filedescription($value);
383: }
384: # Person
385: if (($type eq 'author') ||
386: ($type eq 'owner') ||
387: ($type eq 'modifyinguser') ||
388: ($type eq 'authorspace')) {
389: $value=~s/(\w+)(\:|\@)(\w+)/&authordisplay($1,$3)/gse;
390: return $value;
391: }
392: # Gradelevel
393: if (($type eq 'lowestgradelevel') ||
394: ($type eq 'highestgradelevel')) {
395: return &Apache::loncommon::gradeleveldescription($value);
396: }
397: # Only for advance users below
398: if (! $env{'user.adv'}) {
399: return '<i>- '.&mt('not displayed').' -</i>';
400: }
401: # File
402: if (($type eq 'customdistributionfile') ||
403: ($type eq 'obsoletereplacement') ||
404: ($type eq 'goto_list') ||
405: ($type eq 'comefrom_list') ||
406: ($type eq 'sequsage_list') ||
407: ($type eq 'dependencies')) {
408: return '<ul><font size="-1">'.join("\n",map {
409: my $url = &Apache::lonnet::clutter($_);
410: my $title = &Apache::lonnet::gettitle($url);
411: if ($title eq '') {
412: $title = 'Untitled';
413: if ($url =~ /\.sequence$/) {
414: $title .= ' Sequence';
415: } elsif ($url =~ /\.page$/) {
416: $title .= ' Page';
417: } elsif ($url =~ /\.problem$/) {
418: $title .= ' Problem';
419: } elsif ($url =~ /\.html$/) {
420: $title .= ' HTML document';
421: } elsif ($url =~ m:/syllabus$:) {
422: $title .= ' Syllabus';
423: }
424: }
425: $_ = '<li>'.$title.' '.
426: &Apache::lonhtmlcommon::crumbs($url,$target,$prefix,$form,'-1',$noformat).
427: '</li>'
428: } split(/\s*\,\s*/,$value)).'</ul></font>';
429: }
430: # Evaluations
431: if (($type eq 'clear') ||
432: ($type eq 'depth') ||
433: ($type eq 'helpful') ||
434: ($type eq 'correct') ||
435: ($type eq 'technical')) {
436: return &evalgraph($value);
437: }
438: # Difficulty
439: if ($type eq 'difficulty' || $type eq 'disc') {
440: return &diffgraph($value);
441: }
442: # List of courses
443: if ($type=~/\_list/) {
444: my @Courses = split(/\s*\,\s*/,$value);
445: my $Str;
446: foreach my $course (@Courses) {
447: my %courseinfo = &Apache::lonnet::coursedescription($course);
448: if (! exists($courseinfo{'num'}) || $courseinfo{'num'} eq '') {
449: next;
450: }
451: if ($Str ne '') { $Str .= '<br />'; }
452: $Str .= '<a href="/public/'.$courseinfo{'domain'}.'/'.
453: $courseinfo{'num'}.'/syllabus" target="preview">'.
454: $courseinfo{'description'}.'</a>';
455: }
456: return $Str;
457: }
458: # No pretty print found
459: return $value;
460: }
461:
462: # Pretty input of metadata field
463: sub direct {
464: return shift;
465: }
466:
467: sub selectbox {
468: my ($name,$value,$functionref,@idlist)=@_;
469: if (! defined($functionref)) {
470: $functionref=\&direct;
471: }
472: my $selout='<select name="'.$name.'">';
473: foreach (@idlist) {
474: $selout.='<option value=\''.$_.'\'';
475: if ($_ eq $value) {
476: $selout.=' selected>'.&{$functionref}($_).'</option>';
477: }
478: else {$selout.='>'.&{$functionref}($_).'</option>';}
479: }
480: return $selout.'</select>';
481: }
482:
483: sub relatedfield {
484: my ($show,$relatedsearchflag,$relatedsep,$fieldname,$relatedvalue)=@_;
485: if (! $relatedsearchflag) {
486: return '';
487: }
488: if (! defined($relatedsep)) {
489: $relatedsep=' ';
490: }
491: if (! $show) {
492: return $relatedsep.' ';
493: }
494: return $relatedsep.'<input type="checkbox" name="'.$fieldname.'_related"'.
495: ($relatedvalue?' checked="1"':'').' />';
496: }
497:
498: sub prettyinput {
499: my ($type,$value,$fieldname,$formname,
500: $relatedsearchflag,$relatedsep,$relatedvalue,$size,$course_key)=@_;
501: if (! defined($size)) {
502: $size = 80;
503: }
504: my $output;
505: if (defined($course_key)) {
506: my $stu_add;
507: my $only_one;
508: my %meta_options;
509: my @cur_values_inst;
510: my $cur_values_stu;
511: my $values = $env{$course_key.'.metadata.'.$type.'.values'};
512: if ($env{$course_key.'.metadata.'.$type.'.options'} =~ m/stuadd/) {
513: $stu_add = 'true';
514: }
515: if ($env{$course_key.'.metadata.'.$type.'.options'} =~ m/onlyone/) {
516: $only_one = 'true';
517: }
518: # need to take instructor values out of list where instructor and student
519: # values may be mixed.
520: if ($values) {
521: foreach my $item (split(/,/,$values)) {
522: $item =~ s/^\s+//;
523: $meta_options{$item} = $item;
524: }
525: foreach my $item (split(/,/,$value)) {
526: $item =~ s/^\s+//;
527: if ($meta_options{$item}) {
528: push(@cur_values_inst,$item);
529: } else {
530: $cur_values_stu .= $item.',';
531: }
532: }
533: } else {
534: $cur_values_stu = $value;
535: }
536: if ($type eq 'courserestricted') {
537: return (&select_course());
538: # return ('<input type="hidden" name="new_courserestricted" value="'.$course_key.'" />');
539: }
540: if (($type eq 'keywords') || ($type eq 'subject')
541: || ($type eq 'author')||($type eq 'notes')
542: || ($type eq 'abstract')|| ($type eq 'title')|| ($type eq 'standards')) {
543: if ($values) {
544: if ($only_one) {
545: $output .= (&Apache::loncommon::select_form($cur_values_inst[0],'new_'.$type,%meta_options));
546: } else {
547: $output .= (&Apache::loncommon::multiple_select_form('new_'.$type,\@cur_values_inst,undef,\%meta_options));
548: }
549: }
550: if ($stu_add) {
551: $output .= '<input type="text" name="'.$fieldname.'" size="'.$size.'" '.
552: 'value="'.$cur_values_stu.'" />'.
553: &relatedfield(1,$relatedsearchflag,$relatedsep,$fieldname,
554: $relatedvalue);
555: }
556: return ($output);
557: }
558: if (($type eq 'lowestgradelevel') ||
559: ($type eq 'highestgradelevel')) {
560: return &Apache::loncommon::select_level_form($value,$fieldname).
561: &relatedfield(0,$relatedsearchflag,$relatedsep);
562: }
563: return();
564: }
565: # Language
566: if ($type eq 'language') {
567: return &selectbox($fieldname,
568: $value,
569: \&Apache::loncommon::languagedescription,
570: (&Apache::loncommon::languageids)).
571: &relatedfield(0,$relatedsearchflag,$relatedsep);
572: }
573: # Copyright
574: if ($type eq 'copyright') {
575: return &selectbox($fieldname,
576: $value,
577: \&Apache::loncommon::copyrightdescription,
578: (&Apache::loncommon::copyrightids)).
579: &relatedfield(0,$relatedsearchflag,$relatedsep);
580: }
581: # Source Copyright
582: if ($type eq 'sourceavail') {
583: return &selectbox($fieldname,
584: $value,
585: \&Apache::loncommon::source_copyrightdescription,
586: (&Apache::loncommon::source_copyrightids)).
587: &relatedfield(0,$relatedsearchflag,$relatedsep);
588: }
589: # Gradelevels
590: if (($type eq 'lowestgradelevel') ||
591: ($type eq 'highestgradelevel')) {
592: return &Apache::loncommon::select_level_form($value,$fieldname).
593: &relatedfield(0,$relatedsearchflag,$relatedsep);
594: }
595: # Obsolete
596: if ($type eq 'obsolete') {
597: return '<input type="checkbox" name="'.$fieldname.'"'.
598: ($value?' checked="1"':'').' />'.
599: &relatedfield(0,$relatedsearchflag,$relatedsep);
600: }
601: # Obsolete replacement file
602: if ($type eq 'obsoletereplacement') {
603: return '<input type="text" name="'.$fieldname.
604: '" size="60" value="'.$value.'" /><a href="javascript:openbrowser'.
605: "('".$formname."','".$fieldname."'".
606: ",'')\">".&mt('Select').'</a>'.
607: &relatedfield(0,$relatedsearchflag,$relatedsep);
608: }
609: # Customdistribution file
610: if ($type eq 'customdistributionfile') {
611: return '<input type="text" name="'.$fieldname.
612: '" size="60" value="'.$value.'" /><a href="javascript:openbrowser'.
613: "('".$formname."','".$fieldname."'".
614: ",'rights')\">".&mt('Select').'</a>'.
615: &relatedfield(0,$relatedsearchflag,$relatedsep);
616: }
617: # Source Customdistribution file
618: if ($type eq 'sourcerights') {
619: return '<input type="text" name="'.$fieldname.
620: '" size="60" value="'.$value.'" /><a href="javascript:openbrowser'.
621: "('".$formname."','".$fieldname."'".
622: ",'rights')\">".&mt('Select').'</a>'.
623: &relatedfield(0,$relatedsearchflag,$relatedsep);
624: }
625: if ($type eq 'courserestricted') {
626: return (&select_course());
627: #return ('<input type="hidden" name="new_courserestricted" value="'.$course_key.'" />');
628: }
629:
630: # Dates
631: if (($type eq 'creationdate') ||
632: ($type eq 'lastrevisiondate')) {
633: return
634: &Apache::lonhtmlcommon::date_setter($formname,$fieldname,$value).
635: &relatedfield(0,$relatedsearchflag,$relatedsep);
636: }
637: # No pretty input found
638: $value=~s/^\s+//gs;
639: $value=~s/\s+$//gs;
640: $value=~s/\s+/ /gs;
641: $value=~s/\"/\"\;/gs;
642: return
643: '<input type="text" name="'.$fieldname.'" size="'.$size.'" '.
644: 'value="'.$value.'" />'.
645: &relatedfield(1,$relatedsearchflag,$relatedsep,$fieldname,
646: $relatedvalue);
647: }
648:
649: # Main Handler
650: sub handler {
651: my $r=shift;
652: #
653: my $uri=$r->uri;
654: #
655: # Set document type
656: &Apache::loncommon::content_type($r,'text/html');
657: $r->send_http_header;
658: return OK if $r->header_only;
659: #
660: my ($resdomain,$resuser)=
661: (&Apache::lonnet::declutter($uri)=~/^(\w+)\/(\w+)\//);
662: my $html=&Apache::lonxml::xmlbegin();
663: $r->print($html.'<head><title>'.
664: 'Catalog Information'.
665: '</title></head>');
666: if ($uri=~m:/adm/bombs/(.*)$:) {
667: $r->print(&Apache::loncommon::bodytag('Error Messages'));
668: # Looking for all bombs?
669: &report_bombs($r,$uri);
670: } elsif ($uri=~/\/portfolio\//) {
671: ($resdomain,$resuser)=
672: (&Apache::lonnet::declutter($uri)=~m|^(\w+)/(\w+)/portfolio|);
673: $r->print(&Apache::loncommon::bodytag
674: ('Edit Portfolio File Information','','','',$resdomain));
675: if ($env{'form.store'}) {
676: &present_editable_metadata($r,$uri,'portfolio');
677: } else {
678: &pre_select_course($r,$uri);
679: }
680: } elsif ($uri=~/^\/\~/) {
681: # Construction space
682: $r->print(&Apache::loncommon::bodytag
683: ('Edit Catalog Information','','','',$resdomain));
684: &present_editable_metadata($r,$uri);
685: } else {
686: $r->print(&Apache::loncommon::bodytag
687: ('Catalog Information','','','',$resdomain));
688: &present_uneditable_metadata($r,$uri);
689: }
690: $r->print('</body></html>');
691: return OK;
692: }
693:
694: #####################################################
695: #####################################################
696: ### ###
697: ### Report Bombs ###
698: ### ###
699: #####################################################
700: #####################################################
701: sub report_bombs {
702: my ($r,$uri) = @_;
703: # Set document type
704: $uri =~ s:/adm/bombs/::;
705: $uri = &Apache::lonnet::declutter($uri);
706: $r->print('<h1>'.&Apache::lonnet::clutter($uri).'</h1>');
707: my ($domain,$author)=($uri=~/^(\w+)\/(\w+)\//);
708: if (&Apache::loncacc::constructaccess('/~'.$author.'/',$domain)) {
709: if ($env{'form.clearbombs'}) {
710: &Apache::lonmsg::clear_author_res_msg($uri);
711: }
712: my $clear=&mt('Clear all Messages in Subdirectory');
713: $r->print(<<ENDCLEAR);
714: <form method="post">
715: <input type="submit" name="clearbombs" value="$clear" />
716: </form>
717: ENDCLEAR
718: my %brokenurls =
719: &Apache::lonmsg::all_url_author_res_msg($author,$domain);
720: foreach (sort(keys(%brokenurls))) {
721: if ($_=~/^\Q$uri\E/) {
722: $r->print
723: ('<a href="'.&Apache::lonnet::clutter($_).'">'.$_.'</a>'.
724: &Apache::lonmsg::retrieve_author_res_msg($_).
725: '<hr />');
726: }
727: }
728: } else {
729: $r->print(&mt('Not authorized'));
730: }
731: return;
732: }
733:
734: #####################################################
735: #####################################################
736: ### ###
737: ### Uneditable Metadata Display ###
738: ### ###
739: #####################################################
740: #####################################################
741: sub present_uneditable_metadata {
742: my ($r,$uri) = @_;
743: #
744: my %content=();
745: # Read file
746: foreach (split(/\,/,&Apache::lonnet::metadata($uri,'keys'))) {
747: $content{$_}=&Apache::lonnet::metadata($uri,$_);
748: }
749: # Render Output
750: # displayed url
751: my ($thisversion)=($uri=~/\.(\d+)\.(\w+)\.meta$/);
752: $uri=~s/\.meta$//;
753: my $disuri=&Apache::lonnet::clutter($uri);
754: # version
755: my $currentversion=&Apache::lonnet::getversion($disuri);
756: my $versiondisplay='';
757: if ($thisversion) {
758: $versiondisplay=&mt('Version').': '.$thisversion.
759: ' ('.&mt('most recent version').': '.
760: ($currentversion>0 ?
761: $currentversion :
762: &mt('information not available')).')';
763: } else {
764: $versiondisplay='Version: '.$currentversion;
765: }
766: # crumbify displayed URL uri target prefix form size
767: $disuri=&Apache::lonhtmlcommon::crumbs($disuri,undef, undef, undef,'+1');
768: $disuri =~ s:<br />::g;
769: # obsolete
770: my $obsolete=$content{'obsolete'};
771: my $obsoletewarning='';
772: if (($obsolete) && ($env{'user.adv'})) {
773: $obsoletewarning='<p><font color="red">'.
774: &mt('This resource has been marked obsolete by the author(s)').
775: '</font></p>';
776: }
777: #
778: my %lt=&fieldnames();
779: my $table='';
780: my $title = $content{'title'};
781: if (! defined($title)) {
782: $title = 'Untitled Resource';
783: }
784: foreach ('title',
785: 'author',
786: 'subject',
787: 'keywords',
788: 'notes',
789: 'abstract',
790: 'lowestgradelevel',
791: 'highestgradelevel',
792: 'standards',
793: 'mime',
794: 'language',
795: 'creationdate',
796: 'lastrevisiondate',
797: 'owner',
798: 'copyright',
799: 'customdistributionfile',
800: 'sourceavail',
801: 'sourcerights',
802: 'obsolete',
803: 'obsoletereplacement') {
804: $table.='<tr><td bgcolor="#AAAAAA">'.$lt{$_}.
805: '</td><td bgcolor="#CCCCCC">'.
806: &prettyprint($_,$content{$_}).'</td></tr>';
807: delete $content{$_};
808: }
809: #
810: $r->print(<<ENDHEAD);
811: <h2>$title</h2>
812: <p>
813: $disuri<br />
814: $obsoletewarning
815: $versiondisplay
816: </p>
817: <table cellspacing="2" border="0">
818: $table
819: </table>
820: ENDHEAD
821: if ($env{'user.adv'}) {
822: &print_dynamic_metadata($r,$uri,\%content);
823: }
824: return;
825: }
826:
827: sub print_dynamic_metadata {
828: my ($r,$uri,$content) = @_;
829: #
830: my %content = %$content;
831: my %lt=&fieldnames();
832: #
833: my $description = 'Dynamic Metadata (updated periodically)';
834: $r->print('<h3>'.&mt($description).'</h3>'.
835: &mt('Processing'));
836: $r->rflush();
837: my %items=&fieldnames();
838: my %dynmeta=&dynamicmeta($uri);
839: #
840: # General Access and Usage Statistics
841: if (exists($dynmeta{'count'}) ||
842: exists($dynmeta{'sequsage'}) ||
843: exists($dynmeta{'comefrom'}) ||
844: exists($dynmeta{'goto'}) ||
845: exists($dynmeta{'course'})) {
846: $r->print('<h4>'.&mt('Access and Usage Statistics').'</h4>'.
847: '<table cellspacing="2" border="0">');
848: foreach ('count',
849: 'sequsage','sequsage_list',
850: 'comefrom','comefrom_list',
851: 'goto','goto_list',
852: 'course','course_list') {
853: $r->print('<tr><td bgcolor="#AAAAAA">'.$lt{$_}.'</td>'.
854: '<td bgcolor="#CCCCCC">'.
855: &prettyprint($_,$dynmeta{$_})."</td></tr>\n");
856: }
857: $r->print('</table>');
858: } else {
859: $r->print('<h4>'.&mt('No Access or Usages Statistics are available for this resource.').'</h4>');
860: }
861: #
862: # Assessment statistics
863: if ($uri=~/\.(problem|exam|quiz|assess|survey|form)$/) {
864: if (exists($dynmeta{'stdno'}) ||
865: exists($dynmeta{'avetries'}) ||
866: exists($dynmeta{'difficulty'}) ||
867: exists($dynmeta{'disc'})) {
868: # This is an assessment, print assessment data
869: $r->print('<h4>'.
870: &mt('Overall Assessment Statistical Data').
871: '</h4>'.
872: '<table cellspacing="2" border="0">');
873: $r->print('<tr><td bgcolor="#AAAAAA">'.$lt{'stdno'}.'</td>'.
874: '<td bgcolor="#CCCCCC">'.
875: &prettyprint('stdno',$dynmeta{'stdno'}).
876: '</td>'."</tr>\n");
877: foreach ('avetries','difficulty','disc') {
878: $r->print('<tr><td bgcolor="#AAAAAA">'.$lt{$_}.'</td>'.
879: '<td bgcolor="#CCCCCC">'.
880: &prettyprint($_,sprintf('%5.2f',$dynmeta{$_})).
881: '</td>'."</tr>\n");
882: }
883: $r->print('</table>');
884: }
885: if (exists($dynmeta{'stats'})) {
886: #
887: # New assessment statistics
888: $r->print('<h4>'.
889: &mt('Detailed Assessment Statistical Data').
890: '</h4>');
891: my $table = '<table cellspacing="2" border="0">'.
892: '<tr>'.
893: '<th>Course</th>'.
894: '<th>Section(s)</th>'.
895: '<th>Num Students</th>'.
896: '<th>Mean Tries</th>'.
897: '<th>Degree of Difficulty</th>'.
898: '<th>Degree of Discrimination</th>'.
899: '<th>Time of computation</th>'.
900: '</tr>'.$/;
901: foreach my $identifier (sort(keys(%{$dynmeta{'stats'}}))) {
902: my $data = $dynmeta{'stats'}->{$identifier};
903: my $course = $data->{'course'};
904: my %courseinfo = &Apache::lonnet::coursedescription($course);
905: if (! exists($courseinfo{'num'}) || $courseinfo{'num'} eq '') {
906: &Apache::lonnet::logthis('lookup for '.$course.' failed');
907: next;
908: }
909: $table .= '<tr>';
910: $table .=
911: '<td><nobr>'.$courseinfo{'description'}.'</nobr></td>';
912: $table .=
913: '<td align="right">'.$data->{'sections'}.'</td>';
914: $table .=
915: '<td align="right">'.$data->{'stdno'}.'</td>';
916: foreach ('avetries','difficulty','disc') {
917: $table .= '<td align="right">';
918: if (exists($data->{$_})) {
919: $table .= sprintf('%.2f',$data->{$_}).' ';
920: } else {
921: $table .= '';
922: }
923: $table .= '</td>';
924: }
925: $table .=
926: '<td><nobr>'.
927: &Apache::lonlocal::locallocaltime($data->{'timestamp'}).
928: '</nobr></td>';
929: $table .=
930: '</tr>'.$/;
931: }
932: $table .= '</table>'.$/;
933: $r->print($table);
934: } else {
935: $r->print('No new dynamic data found.');
936: }
937: } else {
938: $r->print('<h4>'.
939: &mt('No Assessment Statistical Data is available for this resource').
940: '</h4>');
941: }
942:
943: #
944: #
945: if (exists($dynmeta{'clear'}) ||
946: exists($dynmeta{'depth'}) ||
947: exists($dynmeta{'helpful'}) ||
948: exists($dynmeta{'correct'}) ||
949: exists($dynmeta{'technical'})){
950: $r->print('<h4>'.&mt('Evaluation Data').'</h4>'.
951: '<table cellspacing="2" border="0">');
952: foreach ('clear','depth','helpful','correct','technical') {
953: $r->print('<tr><td bgcolor="#AAAAAA">'.$lt{$_}.'</td>'.
954: '<td bgcolor="#CCCCCC">'.
955: &prettyprint($_,$dynmeta{$_})."</td></tr>\n");
956: }
957: $r->print('</table>');
958: } else {
959: $r->print('<h4>'.&mt('No Evaluation Data is available for this resource.').'</h4>');
960: }
961: $uri=~/^\/res\/(\w+)\/(\w+)\//;
962: if ((($env{'user.domain'} eq $1) && ($env{'user.name'} eq $2))
963: || ($env{'user.role.ca./'.$1.'/'.$2})) {
964: if (exists($dynmeta{'comments'})) {
965: $r->print('<h4>'.&mt('Evaluation Comments').' ('.
966: &mt('visible to author and co-authors only').
967: ')</h4>'.
968: '<blockquote>'.$dynmeta{'comments'}.'</blockquote>');
969: } else {
970: $r->print('<h4>'.&mt('There are no Evaluation Comments on this resource.').'</h4>');
971: }
972: my $bombs = &Apache::lonmsg::retrieve_author_res_msg($uri);
973: if (defined($bombs) && $bombs ne '') {
974: $r->print('<a name="bombs" /><h4>'.&mt('Error Messages').' ('.
975: &mt('visible to author and co-authors only').')'.
976: '</h4>'.$bombs);
977: } else {
978: $r->print('<h4>'.&mt('There are currently no Error Messages for this resource.').'</h4>');
979: }
980: }
981: #
982: # All other stuff
983: $r->print('<h3>'.
984: &mt('Additional Metadata (non-standard, parameters, exports)').
985: '</h3><table border="0" cellspacing="1">');
986: foreach (sort(keys(%content))) {
987: my $name=$_;
988: if ($name!~/\.display$/) {
989: my $display=&Apache::lonnet::metadata($uri,
990: $name.'.display');
991: if (! $display) {
992: $display=$name;
993: };
994: my $otherinfo='';
995: foreach ('name','part','type','default') {
996: if (defined(&Apache::lonnet::metadata($uri,
997: $name.'.'.$_))) {
998: $otherinfo.=' '.$_.'='.
999: &Apache::lonnet::metadata($uri,
1000: $name.'.'.$_).'; ';
1001: }
1002: }
1003: $r->print('<tr><td bgcolor="#bbccbb"><font size="-1" color="#556655">'.$display.'</font></td><td bgcolor="#ccddcc"><font size="-1" color="#556655">'.$content{$name});
1004: if ($otherinfo) {
1005: $r->print(' ('.$otherinfo.')');
1006: }
1007: $r->print("</font></td></tr>\n");
1008: }
1009: }
1010: $r->print("</table>");
1011: return;
1012: }
1013:
1014:
1015:
1016: #####################################################
1017: #####################################################
1018: ### ###
1019: ### Editable metadata display ###
1020: ### ###
1021: #####################################################
1022: #####################################################
1023: sub present_editable_metadata {
1024: my ($r,$uri, $file_type) = @_;
1025: # Construction Space Call
1026: # Header
1027: my $disuri=$uri;
1028: my $fn=&Apache::lonnet::filelocation('',$uri);
1029: $disuri=~s/^\/\~/\/priv\//;
1030: $disuri=~s/\.meta$//;
1031: $disuri=~s|^/editupload||;
1032: my $target=$uri;
1033: $target=~s/^\/\~/\/res\/$env{'request.role.domain'}\//;
1034: $target=~s/\.meta$//;
1035: my $bombs=&Apache::lonmsg::retrieve_author_res_msg($target);
1036: if ($bombs) {
1037: my $showdel=1;
1038: if ($env{'form.delmsg'}) {
1039: if (&Apache::lonmsg::del_url_author_res_msg($target) eq 'ok') {
1040: $bombs=&mt('Messages deleted.');
1041: $showdel=0;
1042: } else {
1043: $bombs=&mt('Error deleting messages');
1044: }
1045: }
1046: if ($env{'form.clearmsg'}) {
1047: my $cleardir=$target;
1048: $cleardir=~s/\/[^\/]+$/\//;
1049: if (&Apache::lonmsg::clear_author_res_msg($cleardir) eq 'ok') {
1050: $bombs=&mt('Messages cleared.');
1051: $showdel=0;
1052: } else {
1053: $bombs=&mt('Error clearing messages');
1054: }
1055: }
1056: my $del=&mt('Delete Messages for this Resource');
1057: my $clear=&mt('Clear all Messages in Subdirectory');
1058: my $goback=&mt('Back to Source File');
1059: $r->print(<<ENDBOMBS);
1060: <h1>$disuri</h1>
1061: <form method="post" name="defaultmeta">
1062: ENDBOMBS
1063: if ($showdel) {
1064: $r->print(<<ENDDEL);
1065: <input type="submit" name="delmsg" value="$del" />
1066: <input type="submit" name="clearmsg" value="$clear" />
1067: ENDDEL
1068: } else {
1069: $r->print('<a href="'.$disuri.'" />'.$goback.'</a>');
1070: }
1071: $r->print('<br />'.$bombs);
1072: } else {
1073: my $displayfile='Catalog Information for '.$disuri;
1074: if ($disuri=~/\/default$/) {
1075: my $dir=$disuri;
1076: $dir=~s/default$//;
1077: $displayfile=
1078: &mt('Default Cataloging Information for Directory').' '.
1079: $dir;
1080: }
1081: %Apache::lonpublisher::metadatafields=();
1082: %Apache::lonpublisher::metadatakeys=();
1083: my $result=&Apache::lonnet::getfile($fn);
1084: if ($result == -1){
1085: $r->print('Creating new '.$disuri);
1086: } else {
1087: &Apache::lonpublisher::metaeval($result);
1088: }
1089: $r->print(<<ENDEDIT);
1090: <h1>$displayfile</h1>
1091: <form method="post" name="defaultmeta">
1092: ENDEDIT
1093: $r->print('<script language="JavaScript">'.
1094: &Apache::loncommon::browser_and_searcher_javascript().
1095: '</script>');
1096: my %lt=&fieldnames($file_type);
1097: my $output;
1098: my @fields;
1099: if ($file_type eq 'portfolio') {
1100: @fields = ('author','title','subject','keywords','abstract','notes','lowestgradelevel',
1101: 'highestgradelevel','standards');
1102: } else {
1103: @fields = ('author','title','subject','keywords','abstract','notes',
1104: 'copyright','customdistributionfile','language',
1105: 'standards',
1106: 'lowestgradelevel','highestgradelevel','sourceavail','sourcerights',
1107: 'obsolete','obsoletereplacement');
1108: }
1109: if ((! $Apache::lonpublisher::metadatafields{'courserestricted'}) &&
1110: (! $env{'form.new_courserestricted'})) {
1111: $Apache::lonpublisher::metadatafields{'courserestricted'}=
1112: 'none';
1113: } elsif ($env{'form.new_courserestricted'}) {
1114: $Apache::lonpublisher::metadatafields{'courserestricted'}=
1115: $env{'form.new_courserestricted'};
1116: }
1117: if (! $Apache::lonpublisher::metadatafields{'copyright'}) {
1118: $Apache::lonpublisher::metadatafields{'copyright'}=
1119: 'default';
1120: }
1121: if ($Apache::lonpublisher::metadatafields{'courserestricted'} ne 'none') {
1122: $r->print('Using: <strong> '.$env{$Apache::lonpublisher::metadatafields{'courserestricted'}.".description"}.
1123: "</strong> metadata framework<br />");
1124: } else {
1125: $r->print("This resource is not associated with a metadata framework<br />");
1126: }
1127: foreach my $field_name(@fields) {
1128:
1129: if (defined($env{'form.new_'.$field_name})) {
1130: $Apache::lonpublisher::metadatafields{$field_name}=
1131: join(',',&Apache::loncommon::get_env_multiple('form.new_'.$field_name));
1132: }
1133: if ($Apache::lonpublisher::metadatafields{'courserestricted'} ne 'none') {
1134: # handle restrictions here
1135: if (($env{$Apache::lonpublisher::metadatafields{'courserestricted'}.'.metadata.'.$field_name.'.options'} =~ m/active/) ||
1136: ($field_name eq 'courserestricted')){
1137: $output.=('<p>'.$lt{$field_name}.': '.
1138: &prettyinput($field_name,
1139: $Apache::lonpublisher::metadatafields{$field_name},
1140: 'new_'.$field_name,'defaultmeta',
1141: undef,undef,undef,undef,
1142: $Apache::lonpublisher::metadatafields{'courserestricted'}).'</p>');
1143: }
1144: } else {
1145:
1146: $output.=('<p>'.$lt{$field_name}.': '.
1147: &prettyinput($field_name,
1148: $Apache::lonpublisher::metadatafields{$field_name},
1149: 'new_'.$field_name,'defaultmeta').'</p>');
1150:
1151: }
1152: }
1153:
1154: $r->print($output.'<br /><input type="submit" name="store" value="'.
1155: &mt('Store Catalog Information').'">');
1156:
1157: }
1158: $r->print('</form>');
1159: if ($env{'form.store'}) {
1160: my $mfh;
1161: my $formname='store';
1162: my $file_content;
1163: foreach my $meta_field (keys %env) {
1164: if (&Apache::loncommon::get_env_multiple('form.new_keywords')) {
1165: $Apache::lonpublisher::metadatafields{'keywords'} =
1166: join (',', &Apache::loncommon::get_env_multiple('form.new_keywords'));
1167: }
1168: }
1169: foreach (sort keys %Apache::lonpublisher::metadatafields) {
1170: next if ($_ =~ /\./);
1171: my $unikey=$_;
1172: $unikey=~/^([A-Za-z]+)/;
1173: my $tag=$1;
1174: $tag=~tr/A-Z/a-z/;
1175: $file_content.= "\n\<$tag";
1176: foreach (split(/\,/,
1177: $Apache::lonpublisher::metadatakeys{$unikey})
1178: ) {
1179: my $value=
1180: $Apache::lonpublisher::metadatafields{$unikey.'.'.$_};
1181: $value=~s/\"/\'\'/g;
1182: $file_content.=' '.$_.'="'.$value.'"' ;
1183: # print $mfh ' '.$_.'="'.$value.'"';
1184: }
1185: $file_content.= '>'.
1186: &HTML::Entities::encode
1187: ($Apache::lonpublisher::metadatafields{$unikey},
1188: '<>&"').
1189: '</'.$tag.'>';
1190: }
1191: if ($fn =~ /\/portfolio\//) {
1192: $fn =~ /\/portfolio\/(.*)$/;
1193: my $new_fn = '/'.$1;
1194: $env{'form.'.$formname}=$file_content."\n";
1195: $env{'form.'.$formname.'.filename'}=$new_fn;
1196: &Apache::lonnet::userfileupload('uploaddoc','',
1197: 'portfolio'.$env{'form.currentpath'});
1198: if (&Apache::lonnet::userfileupload($formname,'','portfolio') eq 'error: no uploaded file') {
1199: $r->print('<p><font color="red">'.
1200: &mt('Could not write metadata').', '.
1201: &mt('FAIL').'</font></p>');
1202: } else {
1203: $r->print('<p><font color="blue">'.&mt('Wrote Metadata').
1204: ' '.&Apache::lonlocal::locallocaltime(time).
1205: '</font></p>');
1206: }
1207: } else {
1208: if (! ($mfh=Apache::File->new('>'.$fn))) {
1209: $r->print('<p><font color="red">'.
1210: &mt('Could not write metadata').', '.
1211: &mt('FAIL').'</font></p>');
1212: } else {
1213: print $mfh $file_content;
1214: $r->print('<p><font color="blue">'.&mt('Wrote Metadata').
1215: ' '.&Apache::lonlocal::locallocaltime(time).
1216: '</font></p>');
1217: }
1218: }
1219: }
1220: return;
1221: }
1222:
1223: 1;
1224: __END__
1225:
1226:
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