1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.162 2007/06/27 22:39:48 albertel 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:
30: ###############################################################################
31: ## ##
32: ## ORGANIZATION OF THIS PERL MODULE ##
33: ## ##
34: ## 1. Description of functions ##
35: ## 2. Modules used by this module ##
36: ## 3. Choices for different output views (detailed, summary, xml, etc) ##
37: ## 4. BEGIN block (to be run once after compilation) ##
38: ## 5. Handling routine called via Apache and mod_perl ##
39: ## 6. Other subroutines ##
40: ## ##
41: ###############################################################################
42:
43: package Apache::lonindexer;
44:
45: # ------------------------------------------------- modules used by this module
46: use strict;
47: use Apache::lonnet;
48: use Apache::loncommon();
49: use Apache::lonhtmlcommon();
50: use Apache::lonsequence();
51: use Apache::Constants qw(:common);
52: use Apache::lonmeta;
53: use Apache::File;
54: use Apache::lonlocal;
55: use Apache::lonsource();
56: use GDBM_File;
57: use LONCAPA qw(:match);
58:
59: # ---------------------------------------- variables used throughout the module
60: my %hash; # global user-specific gdbm file
61: my %dirs; # keys are directories, values are the open/close status
62: my %language; # has the reference information present in language.tab
63: my %dynhash; # hash of hashes for dynamic metadata
64: my %dynread; # hash of directories already read for dynamic metadata
65: my %fieldnames; # Metadata fieldnames
66: # ----- Values which are set by the handler subroutine and are accessible to
67: # ----- other methods.
68: my $extrafield; # default extra table cell
69: my $fnum; # file counter
70: my $dnum; # directory counter
71:
72: # ----- Used to include or exclude files with certain extensions.
73: my @Only = ();
74: my @Omit = ();
75:
76:
77:
78:
79: # ----------------------------- Handling routine called via Apache and mod_perl
80: sub handler {
81: my $r = shift;
82: my $c = $r->connection();
83: &Apache::loncommon::content_type($r,'text/html');
84: &Apache::loncommon::no_cache($r);
85: $r->send_http_header;
86: return OK if $r->header_only;
87: $fnum=0;
88: $dnum=0;
89:
90: # Deal with stupid global variables (is there a way around making
91: # these global to this package? It is just so wrong....)
92: undef (@Only);
93: undef (@Omit);
94: %fieldnames=&Apache::lonmeta::fieldnames();
95:
96: # ------------------------------------- read in machine configuration variables
97: my $iconpath= $r->dir_config('lonIconsURL') . "/";
98: my $domain = $r->dir_config('lonDefDomain');
99: my $role = $r->dir_config('lonRole');
100: my $loadlim = $r->dir_config('lonLoadLim');
101: my $servadm = $r->dir_config('lonAdmEMail');
102: my $sysadm = $r->dir_config('lonSysEMail');
103: my $lonhost = $r->dir_config('lonHostID');
104: my $tabdir = $r->dir_config('lonTabDir');
105:
106: my $fileclr='#ffffe6';
107: my $line;
108: my (@attrchk,@openpath);
109: my $uri=$r->uri;
110:
111: # -------------------------------------- see if called from an interactive mode
112: # Get the parameters from the query string
113: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
114: ['catalogmode','launch','acts','mode','form','element',
115: 'only','omit','titleelement']);
116: #-------------------------------------------------------------------
117: my $closebutton='';
118: my $groupimportbutton='';
119: my $colspan='';
120:
121: $extrafield='';
122: my $diropendb =
123: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_sel_res.db";
124: %hash = ();
125: {
126: my %dbfile;
127: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_WRITER(),0640)) {
128: if ($env{'form.launch'} eq '1') {
129: &start_fresh_session(\%dbfile);
130: }
131:
132: while(my($key,$value)=each(%dbfile)) {
133: $hash{$key}=$value;
134: }
135: untie(%dbfile);
136: }
137: }
138: {
139: #Hijack lonindexer to verify a title and be close down.
140: if ($env{'form.launch'} eq '2') {
141: &Apache::loncommon::content_type($r,'text/html');
142: my $extra='';
143: if (defined($env{'form.titleelement'}) &&
144: $env{'form.titleelement'} ne '') {
145: my $verify_title = &Apache::lonnet::gettitle($env{'form.acts'});
146: # &Apache::lonnet::logthis("Hrrm $env{'form.acts'} -- $verify_title");
147: $verify_title=~s/'/\\'/g;
148: $extra='window.opener.document.forms["'.$env{'form.form'}.'"].elements["'.$env{'form.titleelement'}.'"].value=\''.$verify_title.'\';';
149: }
150: my $js = <<ENDSUBM;
151: <script type="text/javascript">
152: function load() {
153: window.opener.document.forms["$env{'form.form'}"]
154: .elements["$env{'form.element'}"]
155: .value='$env{'form.acts'}';
156: $extra
157: window.close();
158: }
159: </script>
160: ENDSUBM
161: $r->print(&Apache::loncommon::start_page(undef,$js,
162: {'only_body' =>1,
163: 'add_entries' =>
164: {'onload' => "load();"},}
165: ).
166: &Apache::loncommon::end_page());
167: return OK;
168: }
169:
170: # -------------------- refresh environment with user database values (in %hash)
171: &setvalues(\%hash,'form.catalogmode',\%env,'form.catalogmode' );
172:
173: # --------------------- define extra fields and buttons in case of special mode
174: if ($env{'form.catalogmode'} eq 'interactive') {
175: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
176: '<img alt="" src="'.$iconpath.'whitespace1.gif"'.
177: ' class="LC_icon" /></td>';
178: $colspan=" colspan='2' ";
179: my $cl=&mt('Close');
180: $closebutton=<<END;
181: <input type="button" name="close" value='$cl' onClick="self.close()" />
182: END
183: }
184: elsif ($env{'form.catalogmode'} eq 'import') {
185: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
186: '<img alt="" src="'.$iconpath.'whitespace1.gif"'.
187: ' class="LC_icon" /></td>';
188: $colspan=" colspan='2' ";
189: my $cl=&mt('Close');
190: my $gi=&mt('Import');
191: $closebutton=<<END;
192: <input type="button" name="close" value='$cl' onClick="self.close()" />
193: END
194: $groupimportbutton=<<END;
195: <input type="button" name="groupimport" value='$gi'
196: onClick="javascript:select_group()" />
197: END
198: }
199: # Additions made by Matthew to make the browser a little easier to deal
200: # with in the future.
201: #
202: # $mode (at this time) indicates if we are in edit mode.
203: # $form is the name of the form that the URL is placed when the
204: # selection is made.
205: # $element is the name of the element in $formname which receives
206: # the URL.
207: #&Apache::lonxml::debug('Checking mode, form, element');
208: &setvalues(\%hash,'form.mode' ,\%env,'form.mode' );
209: &setvalues(\%hash,'form.form' ,\%env,'form.form' );
210: &setvalues(\%hash,'form.element' ,\%env,'form.element');
211: &setvalues(\%hash,'form.titleelement',\%env,'form.titleelement');
212: &setvalues(\%hash,'form.only' ,\%env,'form.only' );
213: &setvalues(\%hash,'form.omit' ,\%env,'form.omit' );
214:
215: # Deal with 'omit' and 'only'
216: if (exists $env{'form.omit'}) {
217: @Omit = split(',',$env{'form.omit'});
218: }
219: if (exists $env{'form.only'}) {
220: @Only = split(',',$env{'form.only'});
221: }
222:
223: my $mode = $env{'form.mode'};
224: my ($form,$element,$titleelement);
225: if ($mode eq 'edit' || $mode eq 'parmset') {
226: $form = $env{'form.form'};
227: $element = $env{'form.element'};
228: $titleelement = $env{'form.titleelement'};
229: }
230: #&Apache::lonxml::debug("mode=$mode form=$form element=$element titleelement=$titleelement");
231: # ------ set catalogmodefunctions to have extra needed javascript functionality
232: my $catalogmodefunctions='';
233: if ($env{'form.catalogmode'} eq 'interactive' or
234: $env{'form.catalogmode'} eq 'import') {
235: # The if statement below sets us up to use the old version
236: # by default (ie. if $mode is undefined). This is the easy
237: # way out. Hopefully in the future I'll find a way to get
238: # the calls dealt with in a more comprehensive manner.
239:
240: #
241: # There is now also mode "simple", which is for the simple version of the rat
242: #
243: #
244: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
245: my $location = "/adm/groupsort?catalogmode=import&";
246: $location .= "mode=".$mode."&";
247: $location .= "acts=";
248: $catalogmodefunctions=<<"END";
249: function select_data(url) {
250: changeURL(url);
251: self.close();
252: }
253: function select_group() {
254: window.location="$location"+document.forms.fileattr.acts.value;
255: }
256: function changeURL(val) {
257: if (opener.inf) {
258: if (opener.inf.document.forms.resinfo.elements.u) {
259: opener.inf.document.forms.resinfo.elements.u.value=val;
260: }
261: }
262: }
263: END
264: } elsif ($mode eq 'edit') { # we are in 'edit' mode
265: my $location = "/adm/groupsort?catalogmode=interactive&";
266: $location .= "form=$form&element=$element&mode=edit&acts=";
267: $catalogmodefunctions=<<END;
268: // mode = $mode
269: function select_data(url) {
270: var location = "/res/?launch=2&form=$form&element=$element&titleelement=$titleelement&acts=" + url;
271: window.location=location;
272: }
273: function select_group() {
274: window.location="$location"+document.forms.fileattr.acts.value;
275: }
276:
277: function changeURL(val) {
278: if (window.opener.document) {
279: window.opener.document.forms["$form"].elements["$element"].value=val;
280: } else {
281: alert("The file you selected is: "+val);
282: }
283: }
284: END
285: if (!$titleelement) {
286: $catalogmodefunctions.='function changeTitle(val) {}';
287: } else {
288: $catalogmodefunctions.=<<END;
289: function changeTitle(val) {
290: if (window.opener.document) {
291: window.opener.document.forms["$form"].elements["$titleelement"].value=val;
292: } else {
293: alert("The title of the file you selected is: "+val);
294: }
295: }
296: END
297: }
298: } elsif ($mode eq 'parmset') {
299: my $location = "/adm/groupsort?catalogmode=interactive&";
300: $location .= "form=$form&element=$element&mode=parmset&acts=";
301: $catalogmodefunctions=<<END;
302: // mode = $mode
303: function select_data(url) {
304: changeURL(url);
305: self.close();
306: }
307:
308: function select_group() {
309: window.location="$location"+document.forms.fileattr.acts.value;
310: }
311:
312: function changeURL(val) {
313: if (window.opener.document) {
314: var elementname = "$element"+"_value";
315: var checkboxname = "$element"+"_setparmval";
316: window.opener.document.forms["$form"].elements[elementname].value=val;
317: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
318: } else {
319: alert("The file you selected is: "+val);
320: }
321: }
322:
323: END
324: }
325: }
326: $catalogmodefunctions.=<<END;
327: var acts='';
328: function rep_dirpath(suffix,val) {
329: eval("document.forms.dirpath"+suffix+".acts.value=val");
330: }
331: END
332: if ($env{'form.catalogmode'} eq 'import') {
333: $catalogmodefunctions.=<<END;
334: function queue(val) {
335: if (eval("document.forms."+val+".filelink.checked")) {
336: var l=val.length;
337: var v=val.substring(4,l);
338: document.forms.fileattr.acts.value+='1a'+v+'b';
339: }
340: else {
341: var l=val.length;
342: var v=val.substring(4,l);
343: document.forms.fileattr.acts.value+='0a'+v+'b';
344: }
345: }
346: END
347: }
348:
349: # ---------------------------------------------------------------- Print Header
350: my $js = <<"ENDHEADER";
351: <script type="text/javascript">
352: $catalogmodefunctions
353: function checkAll(dir) {
354: var numForms = document.forms.length;
355: var dirLength = dir.length;
356: var dirCheckbox = document.getElementById(dir);
357: for (i=0;i<numForms;i++) {
358: var numElements = document.forms[i].elements.length;
359: for (j=0;j<numElements;j++){
360: var fieldVal = document.forms[i].elements[j].value;
361: var comp = fieldVal.substr(0,dirLength);
362: if ((comp == dir) && (dirLength < fieldVal.length)) {
363: if (dirCheckbox.checked == true) {
364: document.forms[i].elements[j].checked = true;
365: } else {
366: document.forms[i].elements[j].checked = false;
367: }
368: }
369: }
370: }
371: }
372: function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
373: var xpos = (screen.width-w)/2;
374: xpos = (xpos < 0) ? '0' : xpos;
375: var ypos = (screen.height-h)/2-30;
376: ypos = (ypos < 0) ? '0' : ypos;
377: var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
378: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
379: options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
380: var newWin = window.open(url, wdwName, options);
381: newWin.focus();
382: }
383: function gothere(val) {
384: window.location=val+'?acts='+document.forms.fileattr.acts.value;
385: }
386: </script>
387: ENDHEADER
388:
389: my ($headerdom)=($uri=~m{^/res/($match_domain)/});
390: $r->print(&Apache::loncommon::start_page('Browse Resources',$js,
391: {'domain' => $headerdom,}));
392: # - Evaluate actions from previous page (both cumulatively and chronologically)
393: if ($env{'form.catalogmode'} eq 'import') {
394: my $acts=$env{'form.acts'};
395: my @Acts=split(/b/,$acts);
396: my %ahash;
397: my %achash;
398: my $ac=0;
399: # some initial hashes for working with data
400: foreach (@Acts) {
401: my ($state,$ref)=split(/a/);
402: $ahash{$ref}=$state;
403: $achash{$ref}=$ac;
404: $ac++;
405: }
406: # sorting through the actions and changing the global database hash
407: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
408: my $key=$_;
409: if ($ahash{$key} eq '1') {
410: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
411: $hash{'pre_'.$key.'_title'};
412: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
413: $hash{'storectr'}+0;
414: $hash{'storectr'}++;
415: }
416: if ($ahash{$key} eq '0') {
417: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
418: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
419: }
420: }
421: }
422: # deleting the previously cached listing
423: foreach (keys %hash) {
424: if ($_ =~ /^pre_/ && $_ =~/link$/) {
425: my $key = $_;
426: $key =~ s/^pre_//;
427: $key =~ s/_[^_]*$//;
428: delete $hash{'pre_'.$key.'_title'};
429: delete $hash{'pre_'.$key.'_link'};
430: }
431: }
432: }
433:
434: # ---------------------------------- get state of file attributes to be showing
435: if ($env{'form.attrs'}) {
436: for (my $i=0; $i<=11; $i++) {
437: delete $hash{'display_attrs_'.$i};
438: if ($env{'form.attr'.$i} == 1) {
439: $attrchk[$i] = 'checked';
440: $hash{'display_attrs_'.$i} = 1;
441: }
442: }
443: } else {
444: for (my $i=0; $i<=11; $i++) {
445: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
446: }
447: }
448:
449: # ------------------------------- output state of file attributes to be showing
450: # All versions has to the last item
451: # since it does not take an extra col
452: my %lt=&Apache::lonlocal::texthash(
453: 'ti' => 'Title',
454: 'si' => 'Size',
455: 'la' => 'Last access',
456: 'lm' => 'Last modified',
457: 'st' => 'Statistics',
458: 'au' => 'Author',
459: 'kw' => 'Keywords',
460: 'ln' => 'Language',
461: 'sa' => 'Source Available',
462: 'sr' => 'Show resource',
463: 'li' => 'Linked/Related Resources',
464: 'av' => 'All versions',
465: 'ud' => 'Update Display'
466: );
467: $r->print(<<END);
468: <form method="post" name="fileattr" action="$uri"
469: enctype="application/x-www-form-urlencoded">
470: <label><input type="checkbox" name="attr9" value="1" $attrchk[9] onClick="this.form.submit();" /> $lt{'av'}</label>
471: <table border="0">
472: <tr>
473: <td><label><input type="checkbox" name="attr0" value="1" $attrchk[0] onClick="this.form.submit();" /> $lt{'ti'}</label></td>
474: <td><label><input type="checkbox" name="attr4" value="1" $attrchk[4] onClick="this.form.submit();" /> $lt{'au'}</label></td>
475: <td><label><input type="checkbox" name="attr5" value="1" $attrchk[5] onClick="this.form.submit();" /> $lt{'kw'}</label></td>
476: <td><label><input type="checkbox" name="attr6" value="1" $attrchk[6] onClick="this.form.submit();" /> $lt{'ln'}</label></td>
477: </tr>
478: <tr>
479: <td><label><input type="checkbox" name="attr1" value="1" $attrchk[1] onClick="this.form.submit();" /> $lt{'si'}</label></td>
480: <td><label><input type="checkbox" name="attr2" value="1" $attrchk[2] onClick="this.form.submit();" /> $lt{'la'}</label></td>
481: <td><label><input type="checkbox" name="attr3" value="1" $attrchk[3] onClick="this.form.submit();" /> $lt{'lm'}</label></td>
482: <td><label><input type="checkbox" name="attr10" value="1" $attrchk[10] onClick="this.form.submit();" /> $lt{'sa'}</label></td>
483: </tr>
484: <tr>
485: <td><label><input type="checkbox" name="attr8" value="1" $attrchk[8] onClick="this.form.submit();" /> $lt{'st'}</label></td>
486: <td><label><input type="checkbox" name="attr11" value="1" $attrchk[11] onClick="this.form.submit();" /> $lt{'li'}</label></td>
487: <td><label><input type="checkbox" name="attr7" value="1" $attrchk[7] onClick="this.form.submit();" /> $lt{'sr'}</label></td>
488: <td> </td>
489: </tr>
490: </table>
491: <input type="hidden" name="attrs" value="1" />
492: <input type="submit" name="updatedisplay" value="$lt{'ud'}" />
493: <input type="hidden" name="acts" value="" />
494: $closebutton $groupimportbutton
495: END
496: # -------------- Filter out sequence containment in crumbs and "recent folders"
497: my $storeuri=$uri;
498: $storeuri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
499: $storeuri=~s/\/+/\//g;
500: # ---------------------------------------------------------------- Bread crumbs
501: $r->print(&Apache::lonhtmlcommon::crumbs($storeuri,'','',
502: (($env{'form.catalogmode'} eq 'import')?
503: 'document.forms.fileattr':'')).
504: &Apache::lonhtmlcommon::select_recent('residx','resrecent',
505: 'window.status=this.form.resrecent.options[this.form.resrecent.selectedIndex].value;this.form.action=this.form.resrecent.options[this.form.resrecent.selectedIndex].value;this.form.submit();'));
506: # -------------------------------------------------------- Resource Home Button
507: my $reshome=$env{'course.'.$env{'request.course.id'}.'.reshome'};
508: if ($reshome) {
509: $r->print("<font size='+2'><a href='");
510: if ($env{'form.catalogmode'} eq 'import') {
511: $r->print('javascript:document.forms.fileattr.action="'.$reshome.'";document.forms.fileattr.submit();');
512: } else {
513: $r->print($reshome);
514: }
515: $r->print("'>".&mt('Home').'</a></font>');
516: }
517: $r->print('</form>');
518: # ------------------------------------------------------ Remember where we were
519: &Apache::loncommon::storeresurl($storeuri);
520: &Apache::lonhtmlcommon::store_recent('residx',$storeuri,$storeuri);
521: # ----------------- output starting row to the indexed file/directory hierarchy
522: my $titleclr="#ddffff";
523: #$r->print(&initdebug());
524: #$r->print(&writedebug("Omit:@Omit")) if (@Omit);
525: #$r->print(&writedebug("Only:@Only")) if (@Only);
526: $r->print('<table width="100%" border="0"><tr><td bgcolor="#777777">'."\n");
527: $r->print('<table width="100%" border="0"><tr bgcolor="'.$titleclr.'">'."\n");
528: $r->print("<td $colspan><b>".&mt('Name')."</b></td>\n");
529: $r->print("<td><b>".&mt('Title')."</b></td>\n")
530: if ($hash{'display_attrs_0'} == 1);
531: $r->print("<td align=right><b>".&mt("Size")." (".&mt("bytes").") ".
532: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
533: $r->print("<td><b>".&mt("Last accessed")."</b></td>\n")
534: if ($hash{'display_attrs_2'} == 1);
535: $r->print("<td><b>".&mt("Last modified")."</b></td>\n")
536: if ($hash{'display_attrs_3'} == 1);
537: $r->print("<td><b>".&mt("Author(s)")."</b></td>\n")
538: if ($hash{'display_attrs_4'} == 1);
539: $r->print("<td><b>".&mt("Keywords")."</b></td>\n")
540: if ($hash{'display_attrs_5'} == 1);
541: $r->print("<td><b>".&mt("Language")."</b></td>\n")
542: if ($hash{'display_attrs_6'} == 1);
543: $r->print("<td><b>".&mt("Usage Statistics")." <br />(".
544: &mt("Courses/Network Hits").")</b> ".&mt('updated periodically')."</td>\n")
545: if ($hash{'display_attrs_8'} == 1);
546: $r->print("<td><b>".&mt("Source Available")."</b></td>\n")
547: if ($hash{'display_attrs_10'} == 1);
548: $r->print("<td><b>".&mt("Linked/Related Resources")."</b></td>\n")
549: if ($hash{'display_attrs_11'} == 1);
550: $r->print("<td><b>".&mt("Resource")."</b></td>\n")
551: if ($hash{'display_attrs_7'} == 1);
552: $r->print('</tr>');
553:
554: # ----------------- read in what directories have previously been set to "open"
555: foreach (keys %hash) {
556: if ($_ =~ /^diropen_status_/) {
557: my $key = $_;
558: $key =~ s/^diropen_status_//;
559: $dirs{$key} = $hash{$_};
560: }
561: }
562:
563: if ($env{'form.openuri'}) { # take care of review and refresh options
564: my $uri=$env{'form.openuri'};
565: if (exists($hash{'diropen_status_'.$uri})) {
566: my $cursta = $hash{'diropen_status_'.$uri};
567: $dirs{$uri} = 'open';
568: $hash{'diropen_status_'.$uri} = 'open';
569: if ($cursta eq 'open') {
570: $dirs{$uri} = 'closed';
571: $hash{'diropen_status_'.$uri} = 'closed';
572: }
573: } else {
574: $hash{'diropen_status_'.$uri} = 'open';
575: $dirs{$uri} = 'open';
576: }
577: }
578:
579: my $toplevel;
580: my $indent = 0;
581: $uri = $uri.'/' if $uri !~ /.*\/$/;
582:
583: if ($env{'form.dirPointer'} ne 'on') {
584: $hash{'top.level'} = $uri;
585: $toplevel = $uri;
586: } else {
587: $toplevel = $hash{'top.level'};
588: }
589:
590: # -------------------------------- if not at top level, provide an uplink arrow
591: if ($toplevel ne '/res/'){
592: my (@uri_com) = split(/\//,$uri);
593: pop @uri_com;
594: my $upone = join('/',@uri_com);
595: my @list = qw (0);
596: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
597: $indent = 1;
598: }
599:
600: # -------- recursively go through all the directories and output as appropriate
601: &scanDir ($r,$toplevel,$indent,\%hash);
602:
603:
604: # -------------------------------------------------------------- end the tables
605: $r->print('</table>');
606: # ---------------------------- embed hidden information useful for group import
607: $r->print("<form name='fnum' action=''>");
608: $r->print("<input type='hidden' name='fnum' value='$fnum' /></form>");
609: # -------------------------------------------------------------- end the tables
610: $r->print('</td></tr></table>');
611:
612: # --------------------------------------------------- end the output and return
613: $r->print(&Apache::loncommon::end_page()."\n");
614: }
615: if(! $c->aborted()) {
616: # write back into the temporary file
617: my %dbfile;
618: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
619: while (my($key,$value) = each(%hash)) {
620: $dbfile{$key}=$value;
621: }
622: untie(%dbfile);
623: }
624: }
625:
626: return OK;
627: }
628:
629: # ----------------------------------------------- recursive scan of a directory
630: sub scanDir {
631: my ($r,$startdir,$indent,$hashref)=@_;
632: my $c = $r->connection();
633: my ($compuri,$curdir);
634: my $dirptr=16384;
635: my $obs;
636: $indent++;
637: my %dupdirs = %dirs;
638: my @list=&get_list($r,$startdir);
639: foreach my $line (@list) {
640: return if ($c->aborted());
641: #This is a kludge, sorry aboot this
642: my ($strip,$dom,undef,$testdir,undef,undef,undef,undef,undef,undef,undef,undef,undef,undef,$obs,undef)=split(/\&/,$line,16);
643: next if($strip =~ /.*\.meta$/ | $obs eq '1');
644: my (@fileparts) = split(/\./,$strip);
645: if ($hash{'display_attrs_9'} != 1) {
646: # if not all versions to be shown
647: if (scalar(@fileparts) >= 3) {
648: my $fext = pop @fileparts;
649: my $ov = pop @fileparts;
650: my $fname = join ('.',@fileparts,$fext);
651: next if (grep /\Q$fname\E/,@list and $ov =~ /^\d+$/);
652: }
653: }
654:
655: if ($dom eq 'domain') {
656: # dom list has full path /res/<domain name>/ already
657: $curdir='';
658: $compuri = (split(/\&/,$line))[0];
659: } else {
660: # user, dir & file have name only, i.e., w/o path
661: $compuri = join('',$startdir,$strip,'/');
662: $curdir = $startdir;
663: }
664: my $diropen = 'closed';
665: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/) or ($compuri=~/\.(sequence|page)\/$/)) {
666: while (my ($key,$val)= each %dupdirs) {
667: if ($key eq $compuri and $val eq "open") {
668: $diropen = "opened";
669: delete($dupdirs{$key});
670: delete($dirs{$key});
671: }
672: }
673: }
674: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
675: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
676: }
677: $indent--;
678: }
679:
680: # --------------- get complete matched list based on the uri (returns an array)
681: sub get_list {
682: my ($r,$uri)=@_;
683: my @list=();
684: (my $luri = $uri) =~ s/\//_/g;
685: if ($env{'form.updatedisplay'}) {
686: foreach (keys %hash) {
687: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
688: delete $hash{$_} if ($_ =~ /^dirlist_timestamp_files_/);
689: }
690: }
691:
692: if (defined($hash{'dirlist_files_'.$luri}) &&
693: $hash{'dirlist_timestamp_files_'.$luri}+600 > (time)) {
694: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
695: } elsif ($uri=~/\.(page|sequence)\/$/) {
696: # is a page or a sequence
697: $uri=~s/\/$//;
698: $uri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
699: $uri=~s/\/+/\//g;
700: foreach (&Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$uri))) {
701: my @ratpart=split(/\:/,$_);
702: push(@list,&LONCAPA::map::qtescape($ratpart[1]));
703: }
704: $hash{'dirlist_files_'.$luri} = join("\n",@list);
705: } else {
706: # is really a directory
707: @list = &Apache::lonnet::dirlist($uri);
708: $hash{'dirlist_files_'.$luri} = join("\n",@list);
709: $hash{'dirlist_timestamp_files_'.$luri} = time;
710: }
711: return @list=&match_ext($r,@list);
712: }
713:
714: sub dynmetaread {
715: my $uri=shift;
716: if (($hash{'display_attrs_8'}==1) || ($hash{'display_attrs_11'}==1)) {
717: # We don't want the filename
718: $uri=~s/\/[^\/]+$//;
719: # Did we already see this?
720: my $builddir=$uri;
721: while ($builddir) {
722: if ($dynread{$builddir}) {
723: return 0;
724: }
725: $builddir=~s/\/[^\/]+$//;
726: }
727: # Actually get the data
728: %dynhash=
729: (%dynhash,&Apache::lonmeta::get_dynamic_metadata_from_sql($uri.'/'));
730: # Remember that we got it
731: $dynread{$uri}=1;
732: }
733: }
734:
735: sub initdebug {
736: my $start_page=
737: &Apache::loncommon::start_page('Debug',undef,
738: {'only_body' => 1,});
739: $start_page =~ s/\n/ /g;
740: return <<ENDJS;
741: <script type="text/javascript">
742: var debugging = true;
743: if (debugging) {
744: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
745: }
746:
747: function output(text) {
748: if (debugging) {
749: debuggingWindow.document.writeln(text);
750: }
751: }
752: output('$start_page<pre>');
753: </script>
754: ENDJS
755: }
756:
757: sub writedebug {
758: my ($text) = @_;
759: return "<script type=\"text/javascript\">output('$text');</script>";
760: }
761:
762: # -------------------- filters out files based on extensions (returns an array)
763: sub match_ext {
764: my ($r,@packlist)=@_;
765: my @trimlist;
766: my $nextline;
767: my @fileext;
768: my $dirptr=16384;
769:
770: foreach my $line (@packlist) {
771: chomp $line;
772: $line =~ s/^\/home\/httpd\/html//;
773: my @unpackline = split (/\&/,$line);
774: next if ($unpackline[0] eq '.');
775: next if ($unpackline[0] eq '..');
776: my @filecom = split (/\./,$unpackline[0]);
777: my $fext = pop(@filecom);
778: my $fnptr = ($unpackline[3]&$dirptr) || ($fext=~/\.(page|sequence)$/);
779: if ($fnptr == 0 and $unpackline[3] ne "") {
780: my $embstyle = &Apache::loncommon::fileembstyle($fext);
781: push @trimlist,$line if (defined($embstyle) &&
782: ($embstyle ne 'hdn' or $fext eq 'meta'));
783: } else {
784: push @trimlist,$line;
785: }
786: }
787: @trimlist = sort {uc($a) cmp uc($b)} (@trimlist);
788: return @trimlist;
789: }
790:
791: # ------------------------------- displays one line in appropriate table format
792: sub display_line {
793: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
794: my (@pathfn, $fndir);
795: # there could be relative paths (files actually belonging into this directory)
796: # or absolute paths (for example, from sequences)
797: my $absolute;
798: my $pathprefix;
799: if ($line=~m|^/res/| && $startdir ne '') {
800: $absolute=1;
801: $pathprefix='';
802: } else {
803: $absolute=0;
804: $pathprefix=$startdir;
805: }
806: my $dirptr=16384;
807: my $fileclr="#ffffe6";
808: my $iconpath= $r->dir_config('lonIconsURL') . '/';
809:
810: my @filecom = split (/\&/,$line);
811: my @pathcom = split (/\//,$filecom[0]);
812: my $listname = $pathcom[scalar(@pathcom)-1];
813: my $fnptr = $filecom[3]&$dirptr;
814: my $msg = &mt('View').' '.$filecom[0].' '.&mt('resources');
815: $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
816:
817: my $tabtag='</td>';
818: my $i=0;
819: while ($i<=11) {
820: $tabtag=join('',$tabtag,"<td> </td>")
821: if ($i != 9 &&
822: $hash{'display_attrs_'.$i} == 1);
823: $i++;
824: }
825: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
826:
827: # display uplink arrow
828: if ($filecom[1] eq 'viewOneUp') {
829: my $updir=$startdir;
830: # -------------- Filter out sequence containment in crumbs and "recent folders"
831: $updir='/'.(split(/\.(page|sequence)\/\//,$startdir))[-1];
832: $updir=~s/\/+/\//g;
833:
834: $r->print("<tr valign='$valign' bgcolor=\"$fileclr\">$extrafield");
835: $r->print("<td>\n");
836: $r->print ('<form method="post" name="dirpathUP" action="'.$updir.
837: '/" '.
838: 'onSubmit="return rep_dirpath(\'UP\','.
839: 'document.forms.fileattr.acts.value)" '.
840: 'enctype="application/x-www-form-urlencoded"'.
841: '>'."\n");
842: $r->print ('<input type=hidden name=openuri value="'.
843: $startdir.'" />'."\n");
844: $r->print ('<input type="hidden" name="acts" value="" />'."\n");
845: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
846: $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
847: "\n");
848: $r->print(&mt("Up")."</form>$tabtag</tr>\n");
849: return OK;
850: }
851: # Do we have permission to look at this?
852:
853: if($filecom[15] ne '1') { return OK if (!&Apache::lonnet::allowed('bre',$pathprefix.$filecom[0])); }
854:
855: # make absolute links appear on different background
856: if ($absolute) { $fileclr='#ccdd99'; }
857:
858: # display domain
859: if ($filecom[1] eq 'domain') {
860: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n")
861: if ($env{'form.dirPointer'} eq "on");
862: $r->print("<tr valign='$valign' bgcolor=\"$fileclr\">$extrafield");
863: $r->print("<td>");
864: &begin_form ($r,$filecom[0]);
865: my $anchor = $filecom[0];
866: $anchor =~ s/\W//g;
867: $r->print ('<a name="'.$anchor.'"></a>');
868: $r->print ('<input type="hidden" name="acts" value="" />');
869: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
870: $diropen.'.gif"');
871: $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
872: "\n");
873: my $quotable_filecom = &Apache::loncommon::escape_single($filecom[0]);
874: $r->print ('<a href="javascript:gothere(\''.$quotable_filecom.
875: '\')"><img alt="" src="'.$iconpath.'server.gif"');
876: $r->print (' class="LC_icon" /></a>'."\n");
877: $r->print (&mt("Domain")." - $listname ");
878: if (&Apache::lonnet::domain($listname,'description')) {
879: $r->print("(".&Apache::lonnet::domain($listname,'description').
880: ")");
881: }
882: $r->print ("</form>$tabtag</tr>\n");
883: return OK;
884:
885: # display user directory
886: }
887: if ($filecom[1] eq 'user') {
888: # $r->print("<tr valign=$valign bgcolor=\"$fileclr\">$extrafield");
889: my $curdir = $startdir.$filecom[0].'/';
890: my $anchor = $curdir;
891: $anchor =~ s/\W//g;
892: $r->print("<tr valign=$valign bgcolor=\"$fileclr\">");
893: $r->print("<td>\n");
894: $r->print("<input type=\"checkbox\" name=\"$curdir\" id=\"$curdir\" value=\"$curdir\" onClick=\"javascript:checkAll('$curdir')\" /></td>\n");
895: $r->print("<td nowrap>\n");
896: &begin_form ($r,$curdir);
897: $r->print ('<a name="'.$anchor.'"></a><img alt="" src="'.$iconpath.
898: 'whitespace1.gif" class="LC_icon" />'."\n");
899: $r->print ('<input type="hidden" name="acts" value="" />');
900: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
901: '.gif"');
902: $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
903: "\n");
904: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
905: $r->print ('<a href="javascript:gothere(\''.$quotable_curdir
906: .'\')"><img alt="'.$msg.'" src="'.
907: $iconpath.'quill.gif" class="LC_indexer_icon" /></a>');
908: my $domain=(split(m|/|,$startdir))[2];
909: my $plainname=&Apache::loncommon::plainname($listname,$domain);
910: $r->print ($listname);
911: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
912: $r->print ('</form>'.$tabtag.'</tr>'."\n");
913: return OK;
914: }
915:
916: # display file
917: if (($fnptr == 0 and $filecom[3] ne '') or $absolute) {
918: my $filelink = $pathprefix.$filecom[0];
919: my @file_ext = split (/\./,$listname);
920: my $curfext = $file_ext[-1];
921: if (@Omit) {
922: foreach (@Omit) { return OK if ($curfext eq $_); }
923: }
924: if (@Only) {
925: my $skip = 1;
926: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
927: return OK if ($skip > 0);
928: }
929: # Set the icon for the file
930: my $iconname = &Apache::loncommon::icon($listname);
931: $r->print("<tr valign='$valign' bgcolor=\"$fileclr\"><td nowrap='nowrap' valign='top'>");
932:
933: if ($env{'form.catalogmode'} eq 'interactive') {
934: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
935: $r->print("<a href=\"javascript:select_data(\'",
936: $quotable_filelink,"')\">");
937: $r->print("<img alt=\"\" src='",$iconpath,"select.gif' class='LC_icon' /></a>".
938: "\n");
939: $r->print("</td><td nowrap='nowrap' valign='top'>");
940: } elsif ($env{'form.catalogmode'} eq 'import') {
941: $r->print("<form name='form$fnum' action=''>\n");
942: $r->print("<input type='checkbox' name='filelink"."' ".
943: "value='$filelink' onClick='".
944: "javascript:queue(\"form$fnum\")' ");
945: if ($hash{'store_'.$filelink}) {
946: $r->print("checked");
947: }
948: $r->print(" />\n");
949: $r->print("</form></td><td nowrap='nowrap' valign='top'>");
950: $hash{"pre_${fnum}_link"}=$filelink;
951: $fnum++;
952: }
953: # Form to open or close sequences
954: if ($filelink=~/\.(page|sequence)$/) {
955: my $curdir = $startdir.$filecom[0].'/';
956: &begin_form($r,$curdir);
957: $indent--;
958: }
959: # General indentation
960: if ($indent > 0 and $indent < 11) {
961: $r->print("<img alt=\"\" src='",$iconpath,"whitespace",$indent,
962: ".gif' class='LC_icon' />\n");
963: } elsif ($indent >0) {
964: my $ten = int($indent/10.);
965: my $rem = $indent%10.0;
966: my $count = 0;
967: while ($count < $ten) {
968: $r->print("<img alt=\"\" src=".$iconpath.
969: "whitespace10.gif class='LC_icon' />\n");
970: $count++;
971: }
972: $r->print("<img alt=\"\" src=",$iconpath,"whitespace",$rem,
973: ".gif class='LC_icon' />\n") if $rem > 0;
974: }
975: # Sequence open/close icon
976: if ($filelink=~/\.(page|sequence)$/) {
977: my $curdir = $startdir.$filecom[0].'/';
978: my $anchor = $curdir;
979: $anchor =~ s/\W//g;
980: $r->print ('<input type="hidden" name="acts" value="" />');
981: $r->print ('<a name="'.$anchor.'"></a><input src="'.$iconpath.
982: 'folder_pointer_'.$diropen.'.gif"');
983: $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
984: "\n");
985: }
986: # Filetype icons
987: $r->print("<img alt=\"\" src='$iconname' class='LC_icon' />\n");
988: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
989:
990:
991: $r->print (" <a href=\"javascript:openWindow('".$quotable_filelink.
992: "','previewfile','450','500','no','yes','yes');\"".
993: " target=\"_self\">$listname</a> ");
994:
995: $r->print (" (<a href=\"javascript:openWindow('".$quotable_filelink.
996: ".meta','metadatafile','500','550','no','yes','no');\" ".
997: " target=\"_self\">metadata</a>) ");
998: # Close form to open/close sequence
999: if ($filelink=~/\.(page|sequence)$/) {
1000: $r->print('</form>');
1001: }
1002: $r->print("</td>\n");
1003: if ($hash{'display_attrs_0'} == 1) {
1004: my $title = &Apache::lonnet::gettitle($filelink,'title');
1005: $r->print('<td> '.($title eq '' ? ' ' : $title).
1006: ' </td>'."\n");
1007: }
1008: $r->print('<td align=right> ',
1009: $filecom[8]," </td>\n")
1010: if $hash{'display_attrs_1'} == 1;
1011: $r->print('<td> '.
1012: (localtime($filecom[9]))." </td>\n")
1013: if $hash{'display_attrs_2'} == 1;
1014: $r->print('<td> '.
1015: (localtime($filecom[10]))." </td>\n")
1016: if $hash{'display_attrs_3'} == 1;
1017:
1018: if ($hash{'display_attrs_4'} == 1) {
1019: my $author = &Apache::lonnet::metadata($filelink,'author');
1020: $r->print('<td> '.($author eq '' ? ' ' : $author).
1021: " </td>\n");
1022: }
1023: if ($hash{'display_attrs_5'} == 1) {
1024: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1025: # $keywords = ' ' if (!$keywords);
1026: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1027: " </td>\n");
1028: }
1029: #'
1030:
1031: if ($hash{'display_attrs_6'} == 1) {
1032: my $lang = &Apache::lonnet::metadata($filelink,'language');
1033: $lang = &Apache::loncommon::languagedescription($lang);
1034: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1035: " </td>\n");
1036: }
1037: if ($hash{'display_attrs_8'} == 1) {
1038: # statistics
1039: &dynmetaread($filelink);
1040: $r->print("<td>");
1041: &dynmetaprint($r,$filelink,'count');
1042: &dynmetaprint($r,$filelink,'course');
1043: &dynmetaprint($r,$filelink,'stdno');
1044: &dynmetaprint($r,$filelink,'avetries');
1045: &dynmetaprint($r,$filelink,'difficulty');
1046: &dynmetaprint($r,$filelink,'disc');
1047: &dynmetaprint($r,$filelink,'clear');
1048: &dynmetaprint($r,$filelink,'technical');
1049: &dynmetaprint($r,$filelink,'correct');
1050: &dynmetaprint($r,$filelink,'helpful');
1051: &dynmetaprint($r,$filelink,'depth');
1052: $r->print(" </td>\n");
1053:
1054: }
1055: if ($hash{'display_attrs_10'} == 1) {
1056: my $source = &Apache::lonnet::metadata($filelink,'sourceavail');
1057: if($source eq 'open') {
1058: my $sourcelink = &Apache::lonsource::make_link($filelink,$listname);
1059: my $quotable_sourcelink = &Apache::loncommon::escape_single($sourcelink);
1060: $r->print('<td>'."<a href=\"javascript:openWindow('"
1061: .$quotable_sourcelink.
1062: "', 'previewsource', '700', '700', 'no', 'yes','yes');\"".
1063: " target=\"_self\">Yes</a> "."</td>\n");
1064: } else { #A cuddled else. :P
1065: $r->print("<td> </td>\n");
1066: }
1067: }
1068: if ($hash{'display_attrs_11'} == 1) {
1069: # links
1070: &dynmetaread($filelink);
1071: $r->print('<td>');
1072: &coursecontext($r,$filelink);
1073: &dynmetaprint($r,$filelink,'goto_list');
1074: &dynmetaprint($r,$filelink,'comefrom_list');
1075: &dynmetaprint($r,$filelink,'sequsage_list');
1076: &dynmetaprint($r,$filelink,'dependencies');
1077: &dynmetaprint($r,$filelink,'course_list');
1078: $r->print('</td>');
1079: }
1080: if ($hash{'display_attrs_7'} == 1) {
1081: # Show resource
1082: my $output=&showpreview($filelink);
1083: $r->print('<td> '.($output eq '' ? ' ':$output).
1084: " </td>\n");
1085: }
1086: $r->print("</tr>\n");
1087: }
1088:
1089: # -- display directory
1090: if ($fnptr == $dirptr) {
1091: my $curdir = $startdir.$filecom[0].'/';
1092: my $anchor = $curdir;
1093: $anchor =~ s/\W//g;
1094: $r->print("<tr bgcolor=\"$fileclr\">$extrafield<td valign=$valign>");
1095: &begin_form ($r,$curdir);
1096: my $indentm1 = $indent-1;
1097: if ($indentm1 < 11 and $indentm1 > 0) {
1098: $r->print("<img alt=\"\" src=",$iconpath,"whitespace",$indentm1,
1099: ".gif class='LC_icon' />\n");
1100: } else {
1101: my $ten = int($indentm1/10.);
1102: my $rem = $indentm1%10.0;
1103: my $count = 0;
1104: while ($count < $ten) {
1105: $r->print ("<img alt=\"\" src=",$iconpath
1106: ,"whitespace10.gif class='LC_icon' />\n");
1107: $count++;
1108: }
1109: $r->print ("<img alt=\"\" src=",$iconpath,"whitespace",$rem,
1110: ".gif class='LC_icon' />\n") if $rem > 0;
1111: }
1112: $r->print ('<input type="hidden" name="acts" value="" />');
1113: $r->print ('<a name="'.$anchor.'"></a><input src="'.$iconpath.
1114: 'folder_pointer_'.$diropen.'.gif"');
1115: $r->print (' name="'.$msg.'" type="image" class="LC_indexer_icon" />'.
1116: "\n");
1117: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
1118: $r->print ('<a href="javascript:gothere(\''
1119: .$quotable_curdir.'\')">'
1120: .'<img alt="'.&mt('Open Folder').'"src="'.
1121: $iconpath.'folder_'.$diropen.'.gif" class="LC_icon" /></a>'.
1122: "\n");
1123: $r->print ("$listname</form></td>\n");
1124: # Attributes
1125: my $filelink = $startdir.$filecom[0].'/default';
1126:
1127: if ($hash{'display_attrs_0'} == 1) {
1128: my $title = &Apache::lonnet::gettitle($filelink,'title');
1129: $r->print('<td> '.($title eq '' ? ' ' : $title).
1130: ' </td>'."\n");
1131: }
1132: $r->print('<td align=right> ',
1133: $filecom[8]," </td>\n")
1134: if $hash{'display_attrs_1'} == 1;
1135: $r->print('<td> '.
1136: (localtime($filecom[9]))." </td>\n")
1137: if $hash{'display_attrs_2'} == 1;
1138: $r->print('<td> '.
1139: (localtime($filecom[10]))." </td>\n")
1140: if $hash{'display_attrs_3'} == 1;
1141:
1142: if ($hash{'display_attrs_4'} == 1) {
1143: my $author = &Apache::lonnet::metadata($filelink,'author');
1144: $r->print('<td> '.($author eq '' ? ' ' : $author).
1145: " </td>\n");
1146: }
1147: if ($hash{'display_attrs_5'} == 1) {
1148: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1149: # $keywords = ' ' if (!$keywords);
1150: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1151: " </td>\n");
1152: }
1153: if ($hash{'display_attrs_6'} == 1) {
1154: my $lang = &Apache::lonnet::metadata($filelink,'language');
1155: $lang = &Apache::loncommon::languagedescription($lang);
1156: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1157: " </td>\n");
1158: }
1159: if ($hash{'display_attrs_8'} == 1) {
1160: $r->print('<td> </td>');
1161: }
1162: if ($hash{'display_attrs_10'} == 1) {
1163: $r->print('<td> </td>');
1164: }
1165: if ($hash{'display_attrs_11'} == 1) {
1166: $r->print('<td> </td>');
1167: }
1168: if ($hash{'display_attrs_7'} == 1) {
1169: $r->print('<td> </td>');
1170: }
1171: $r->print('</tr>');
1172: }
1173:
1174: }
1175:
1176: sub coursecontext {
1177: my ($r,$filelink)=@_;
1178: my $filesymb=&Apache::lonnet::symbread($filelink);
1179: if ($filesymb) {
1180: my ($map,$index,$resource)=&Apache::lonnet::decode_symb($filesymb);
1181: $r->print(&mt('Already in this course:<br />[_1] in folder/map [_2].<br />',
1182: &Apache::lonnet::gettitle($resource),
1183: &Apache::lonnet::gettitle($map)));
1184: }
1185: }
1186:
1187: sub showpreview {
1188: my ($filelink)=@_;
1189: if ($filelink=~m-^(/ext/|http://)-) {
1190: return &mt('External Resource, preview not enabled');
1191: }
1192: my ($curfext)=($filelink=~/\.(\w+)$/);
1193: my $output='';
1194: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
1195: if ($embstyle eq 'ssi') {
1196: my $cache=$Apache::lonnet::perlvar{'lonDocRoot'}.$filelink.
1197: '.tmp';
1198: if ((!$env{'form.updatedisplay'}) &&
1199: (-e $cache)) {
1200: open(FH,$cache);
1201: $output=join("\n",<FH>);
1202: close(FH);
1203: } else {
1204: # In update display mode, remove old cache. This is done to retroactively
1205: # clean up course context renderings.
1206: if (-e $cache) {
1207: unlink($cache);
1208: }
1209: $output=&Apache::lonnet::ssi_body($filelink);
1210: # Is access denied? Don't render, don't store
1211: if ($output=~/LONCAPAACCESSCONTROLERRORSCREEN/s) {
1212: $output='';
1213: # Was this rendered in course content? Don't store
1214: } elsif (!&Apache::lonnet::symbread($filelink)) {
1215: open(FH,">$cache");
1216: print FH $output;
1217: close(FH);
1218: }
1219: }
1220: $output='<font size="-2">'.$output.'</font>';
1221: } elsif ($embstyle eq 'img') {
1222: $output='<img alt="'.&mt('Preview').'" src="'.$filelink.'" />';
1223: } elsif ($filelink=~m{^/res/($match_domain)/($match_username)/}) {
1224: $output='<img alt="'.&mt('Preview').'" src="http://'.
1225: &Apache::lonnet::hostname(&Apache::lonnet::homeserver($2,$1)).
1226: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
1227: }
1228: return $output;
1229: }
1230:
1231: sub dynmetaprint {
1232: my ($r,$filelink,$item)=@_;
1233: if ($dynhash{$filelink}->{$item}) {
1234: $r->print("\n<br />".$fieldnames{$item}.': '.
1235: &Apache::lonmeta::prettyprint($item,
1236: $dynhash{$filelink}->{$item},
1237: (($env{'form.catalogmode'} ne 'import')?'preview':''),
1238: '',
1239: (($env{'form.catalogmode'} eq 'import')?'document.forms.fileattr':''),1));
1240: }
1241: }
1242:
1243: # ------------------- prints the beginning of a form for directory or file link
1244: sub begin_form {
1245: my ($r,$uri) = @_;
1246: my $anchor = $uri;
1247: $anchor =~ s/\W//g;
1248: $uri=&Apache::loncommon::escape_single($uri);
1249: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
1250: '#'.$anchor.
1251: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
1252: ',document.forms.fileattr.acts.value)" '.
1253: 'enctype="application/x-www-form-urlencoded">'."\n");
1254: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'" />'.
1255: "\n");
1256: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n");
1257: $dnum++;
1258: }
1259:
1260: # --------- settings whenever the user causes the indexer window to be launched
1261: sub start_fresh_session {
1262: my ($hash) = @_;
1263: delete $hash->{'form.catalogmode'};
1264: delete $hash->{'form.mode'};
1265: delete $hash->{'form.form'};
1266: delete $hash->{'form.element'};
1267: delete $hash->{'form.omit'};
1268: delete $hash->{'form.only'};
1269: foreach (keys %{$hash}) {
1270: delete $hash->{$_} if (/^(pre_|store)/);
1271: }
1272: }
1273:
1274: # ------------------------------------------------------------------- setvalues
1275: sub setvalues {
1276: # setvalues is used in registerurl to synchronize the database
1277: # hash and environment hashes
1278: my ($H1,$h1key,$H2,$h2key) =@_;
1279: #
1280: if (exists $H2->{$h2key}) {
1281: $H1->{$h1key} = $H2->{$h2key};
1282: } elsif (exists $H1->{$h1key}) {
1283: $H2->{$h2key} = $H1->{$h1key};
1284: }
1285: }
1286:
1287: 1;
1288:
1289: sub cleanup {
1290: if (tied(%hash)){
1291: &Apache::lonnet::logthis('Cleanup indexer: hash');
1292: }
1293: return OK;
1294: }
1295:
1296:
1297:
1298:
1299:
1300: =head1 NAME
1301:
1302: Apache::lonindexer - mod_perl module for cross server filesystem browsing
1303:
1304: =head1 SYNOPSIS
1305:
1306: Invoked by /etc/httpd/conf/srm.conf:
1307:
1308: <LocationMatch "^/res.*/$">
1309: SetHandler perl-script
1310: PerlHandler Apache::lonindexer
1311: </LocationMatch>
1312:
1313: =head1 INTRODUCTION
1314:
1315: This module enables a scheme of browsing across a cross server.
1316:
1317: This is part of the LearningOnline Network with CAPA project
1318: described at http://www.lon-capa.org.
1319:
1320: =head1 BEGIN SUBROUTINE
1321:
1322: This routine is only run once after compilation.
1323:
1324: =over 4
1325:
1326: =item *
1327:
1328: Initializes %language hash table.
1329:
1330: =back
1331:
1332: =head1 HANDLER SUBROUTINE
1333:
1334: This routine is called by Apache and mod_perl.
1335:
1336: =over 4
1337:
1338: =item *
1339:
1340: read in machine configuration variables
1341:
1342: =item *
1343:
1344: see if called from an interactive mode
1345:
1346: =item *
1347:
1348: refresh environment with user database values (in %hash)
1349:
1350: =item *
1351:
1352: define extra fields and buttons in case of special mode
1353:
1354: =item *
1355:
1356: set catalogmodefunctions to have extra needed javascript functionality
1357:
1358: =item *
1359:
1360: print header
1361:
1362: =item *
1363:
1364: evaluate actions from previous page (both cumulatively and chronologically)
1365:
1366: =item *
1367:
1368: output title
1369:
1370: =item *
1371:
1372: get state of file attributes to be showing
1373:
1374: =item *
1375:
1376: output state of file attributes to be showing
1377:
1378: =item *
1379:
1380: output starting row to the indexed file/directory hierarchy
1381:
1382: =item *
1383:
1384: read in what directories have previously been set to "open"
1385:
1386: =item *
1387:
1388: if not at top level, provide an uplink arrow
1389:
1390: =item *
1391:
1392: recursively go through all the directories and output as appropriate
1393:
1394: =item *
1395:
1396: information useful for group import
1397:
1398: =item *
1399:
1400: end the tables
1401:
1402: =item *
1403:
1404: end the output and return
1405:
1406: =back
1407:
1408: =head1 OTHER SUBROUTINES
1409:
1410: =over 4
1411:
1412: =item *
1413:
1414: scanDir - recursive scan of a directory
1415:
1416: =item *
1417:
1418: get_list - get complete matched list based on the uri (returns an array)
1419:
1420: =item *
1421:
1422: match_ext - filters out files based on extensions (returns an array)
1423:
1424: =item *
1425:
1426: display_line - displays one line in appropriate table format
1427:
1428: =item *
1429:
1430: begin_form - prints the beginning of a form for directory or file link
1431:
1432: =item *
1433:
1434: start_fresh_session - settings whenever the user causes the indexer window
1435: to be launched
1436:
1437: =back
1438:
1439: =cut
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