1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.157 2007/03/02 23:17:59 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: ' border="0" /></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: ' border="0" /></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: $catalogmodefunctions
353: function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
354: var xpos = (screen.width-w)/2;
355: xpos = (xpos < 0) ? '0' : xpos;
356: var ypos = (screen.height-h)/2-30;
357: ypos = (ypos < 0) ? '0' : ypos;
358: var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
359: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
360: options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
361: var newWin = window.open(url, wdwName, options);
362: newWin.focus();
363: }
364: function gothere(val) {
365: window.location=val+'?acts='+document.forms.fileattr.acts.value;
366: }
367: </script>
368: ENDHEADER
369:
370: my ($headerdom)=($uri=~m{^/res/($match_domain)/});
371: $r->print(&Apache::loncommon::start_page('Browse Resources',$js,
372: {'domain' => $headerdom,}));
373: # - Evaluate actions from previous page (both cumulatively and chronologically)
374: if ($env{'form.catalogmode'} eq 'import') {
375: my $acts=$env{'form.acts'};
376: my @Acts=split(/b/,$acts);
377: my %ahash;
378: my %achash;
379: my $ac=0;
380: # some initial hashes for working with data
381: foreach (@Acts) {
382: my ($state,$ref)=split(/a/);
383: $ahash{$ref}=$state;
384: $achash{$ref}=$ac;
385: $ac++;
386: }
387: # sorting through the actions and changing the global database hash
388: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
389: my $key=$_;
390: if ($ahash{$key} eq '1') {
391: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
392: $hash{'pre_'.$key.'_title'};
393: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
394: $hash{'storectr'}+0;
395: $hash{'storectr'}++;
396: }
397: if ($ahash{$key} eq '0') {
398: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
399: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
400: }
401: }
402: }
403: # deleting the previously cached listing
404: foreach (keys %hash) {
405: if ($_ =~ /^pre_/ && $_ =~/link$/) {
406: my $key = $_;
407: $key =~ s/^pre_//;
408: $key =~ s/_[^_]*$//;
409: delete $hash{'pre_'.$key.'_title'};
410: delete $hash{'pre_'.$key.'_link'};
411: }
412: }
413: }
414:
415: # ---------------------------------- get state of file attributes to be showing
416: if ($env{'form.attrs'}) {
417: for (my $i=0; $i<=11; $i++) {
418: delete $hash{'display_attrs_'.$i};
419: if ($env{'form.attr'.$i} == 1) {
420: $attrchk[$i] = 'checked';
421: $hash{'display_attrs_'.$i} = 1;
422: }
423: }
424: } else {
425: for (my $i=0; $i<=11; $i++) {
426: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
427: }
428: }
429:
430: # ------------------------------- output state of file attributes to be showing
431: # All versions has to the last item
432: # since it does not take an extra col
433: my %lt=&Apache::lonlocal::texthash(
434: 'ti' => 'Title',
435: 'si' => 'Size',
436: 'la' => 'Last access',
437: 'lm' => 'Last modified',
438: 'st' => 'Statistics',
439: 'au' => 'Author',
440: 'kw' => 'Keywords',
441: 'ln' => 'Language',
442: 'sa' => 'Source Available',
443: 'sr' => 'Show resource',
444: 'li' => 'Linked/Related Resources',
445: 'av' => 'All versions',
446: 'ud' => 'Update Display'
447: );
448: $r->print(<<END);
449: <form method="post" name="fileattr" action="$uri"
450: enctype="application/x-www-form-urlencoded">
451: <label><input type="checkbox" name="attr9" value="1" $attrchk[9] onClick="this.form.submit();" /> $lt{'av'}</label>
452: <table border="0">
453: <tr>
454: <td><label><input type="checkbox" name="attr0" value="1" $attrchk[0] onClick="this.form.submit();" /> $lt{'ti'}</label></td>
455: <td><label><input type="checkbox" name="attr4" value="1" $attrchk[4] onClick="this.form.submit();" /> $lt{'au'}</label></td>
456: <td><label><input type="checkbox" name="attr5" value="1" $attrchk[5] onClick="this.form.submit();" /> $lt{'kw'}</label></td>
457: <td><label><input type="checkbox" name="attr6" value="1" $attrchk[6] onClick="this.form.submit();" /> $lt{'ln'}</label></td>
458: </tr>
459: <tr>
460: <td><label><input type="checkbox" name="attr1" value="1" $attrchk[1] onClick="this.form.submit();" /> $lt{'si'}</label></td>
461: <td><label><input type="checkbox" name="attr2" value="1" $attrchk[2] onClick="this.form.submit();" /> $lt{'la'}</label></td>
462: <td><label><input type="checkbox" name="attr3" value="1" $attrchk[3] onClick="this.form.submit();" /> $lt{'lm'}</label></td>
463: <td><label><input type="checkbox" name="attr10" value="1" $attrchk[10] onClick="this.form.submit();" /> $lt{'sa'}</label></td>
464: </tr>
465: <tr>
466: <td><label><input type="checkbox" name="attr8" value="1" $attrchk[8] onClick="this.form.submit();" /> $lt{'st'}</label></td>
467: <td><label><input type="checkbox" name="attr11" value="1" $attrchk[11] onClick="this.form.submit();" /> $lt{'li'}</label></td>
468: <td><label><input type="checkbox" name="attr7" value="1" $attrchk[7] onClick="this.form.submit();" /> $lt{'sr'}</label></td>
469: <td> </td>
470: </tr>
471: </table>
472: <input type="hidden" name="attrs" value="1" />
473: <input type="submit" name="updatedisplay" value="$lt{'ud'}" />
474: <input type="hidden" name="acts" value="" />
475: $closebutton $groupimportbutton
476: END
477: # -------------- Filter out sequence containment in crumbs and "recent folders"
478: my $storeuri=$uri;
479: $storeuri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
480: $storeuri=~s/\/+/\//g;
481: # ---------------------------------------------------------------- Bread crumbs
482: $r->print(&Apache::lonhtmlcommon::crumbs($storeuri,'','',
483: (($env{'form.catalogmode'} eq 'import')?
484: 'document.forms.fileattr':'')).
485: &Apache::lonhtmlcommon::select_recent('residx','resrecent',
486: '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();'));
487: # -------------------------------------------------------- Resource Home Button
488: my $reshome=$env{'course.'.$env{'request.course.id'}.'.reshome'};
489: if ($reshome) {
490: $r->print("<font size='+2'><a href='");
491: if ($env{'form.catalogmode'} eq 'import') {
492: $r->print('javascript:document.forms.fileattr.action="'.$reshome.'";document.forms.fileattr.submit();');
493: } else {
494: $r->print($reshome);
495: }
496: $r->print("'>".&mt('Home').'</a></font>');
497: }
498: $r->print('</form>');
499: # ------------------------------------------------------ Remember where we were
500: &Apache::loncommon::storeresurl($storeuri);
501: &Apache::lonhtmlcommon::store_recent('residx',$storeuri,$storeuri);
502: # ----------------- output starting row to the indexed file/directory hierarchy
503: my $titleclr="#ddffff";
504: #$r->print(&initdebug());
505: #$r->print(&writedebug("Omit:@Omit")) if (@Omit);
506: #$r->print(&writedebug("Only:@Only")) if (@Only);
507: $r->print('<table width="100%" border="0"><tr><td bgcolor="#777777">'."\n");
508: $r->print('<table width="100%" border="0"><tr bgcolor="'.$titleclr.'">'."\n");
509: $r->print("<td $colspan><b>".&mt('Name')."</b></td>\n");
510: $r->print("<td><b>".&mt('Title')."</b></td>\n")
511: if ($hash{'display_attrs_0'} == 1);
512: $r->print("<td align=right><b>".&mt("Size")." (".&mt("bytes").") ".
513: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
514: $r->print("<td><b>".&mt("Last accessed")."</b></td>\n")
515: if ($hash{'display_attrs_2'} == 1);
516: $r->print("<td><b>".&mt("Last modified")."</b></td>\n")
517: if ($hash{'display_attrs_3'} == 1);
518: $r->print("<td><b>".&mt("Author(s)")."</b></td>\n")
519: if ($hash{'display_attrs_4'} == 1);
520: $r->print("<td><b>".&mt("Keywords")."</b></td>\n")
521: if ($hash{'display_attrs_5'} == 1);
522: $r->print("<td><b>".&mt("Language")."</b></td>\n")
523: if ($hash{'display_attrs_6'} == 1);
524: $r->print("<td><b>".&mt("Usage Statistics")." <br />(".
525: &mt("Courses/Network Hits").")</b> ".&mt('updated periodically')."</td>\n")
526: if ($hash{'display_attrs_8'} == 1);
527: $r->print("<td><b>".&mt("Source Available")."</b></td>\n")
528: if ($hash{'display_attrs_10'} == 1);
529: $r->print("<td><b>".&mt("Linked/Related Resources")."</b></td>\n")
530: if ($hash{'display_attrs_11'} == 1);
531: $r->print("<td><b>".&mt("Resource")."</b></td>\n")
532: if ($hash{'display_attrs_7'} == 1);
533: $r->print('</tr>');
534:
535: # ----------------- read in what directories have previously been set to "open"
536: foreach (keys %hash) {
537: if ($_ =~ /^diropen_status_/) {
538: my $key = $_;
539: $key =~ s/^diropen_status_//;
540: $dirs{$key} = $hash{$_};
541: }
542: }
543:
544: if ($env{'form.openuri'}) { # take care of review and refresh options
545: my $uri=$env{'form.openuri'};
546: if (exists($hash{'diropen_status_'.$uri})) {
547: my $cursta = $hash{'diropen_status_'.$uri};
548: $dirs{$uri} = 'open';
549: $hash{'diropen_status_'.$uri} = 'open';
550: if ($cursta eq 'open') {
551: $dirs{$uri} = 'closed';
552: $hash{'diropen_status_'.$uri} = 'closed';
553: }
554: } else {
555: $hash{'diropen_status_'.$uri} = 'open';
556: $dirs{$uri} = 'open';
557: }
558: }
559:
560: my $toplevel;
561: my $indent = 0;
562: $uri = $uri.'/' if $uri !~ /.*\/$/;
563:
564: if ($env{'form.dirPointer'} ne 'on') {
565: $hash{'top.level'} = $uri;
566: $toplevel = $uri;
567: } else {
568: $toplevel = $hash{'top.level'};
569: }
570:
571: # -------------------------------- if not at top level, provide an uplink arrow
572: if ($toplevel ne '/res/'){
573: my (@uri_com) = split(/\//,$uri);
574: pop @uri_com;
575: my $upone = join('/',@uri_com);
576: my @list = qw (0);
577: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
578: $indent = 1;
579: }
580:
581: # -------- recursively go through all the directories and output as appropriate
582: &scanDir ($r,$toplevel,$indent,\%hash);
583:
584:
585: # -------------------------------------------------------------- end the tables
586: $r->print('</table>');
587: # ---------------------------- embed hidden information useful for group import
588: $r->print("<form name='fnum' action=''>");
589: $r->print("<input type='hidden' name='fnum' value='$fnum' /></form>");
590: # -------------------------------------------------------------- end the tables
591: $r->print('</td></tr></table>');
592:
593: # --------------------------------------------------- end the output and return
594: $r->print(&Apache::loncommon::end_page()."\n");
595: }
596: if(! $c->aborted()) {
597: # write back into the temporary file
598: my %dbfile;
599: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
600: while (my($key,$value) = each(%hash)) {
601: $dbfile{$key}=$value;
602: }
603: untie(%dbfile);
604: }
605: }
606:
607: return OK;
608: }
609:
610: # ----------------------------------------------- recursive scan of a directory
611: sub scanDir {
612: my ($r,$startdir,$indent,$hashref)=@_;
613: my $c = $r->connection();
614: my ($compuri,$curdir);
615: my $dirptr=16384;
616: my $obs;
617: $indent++;
618: my %dupdirs = %dirs;
619: my @list=&get_list($r,$startdir);
620: foreach my $line (@list) {
621: return if ($c->aborted());
622: #This is a kludge, sorry aboot this
623: my ($strip,$dom,undef,$testdir,undef,undef,undef,undef,undef,undef,undef,undef,undef,undef,$obs,undef)=split(/\&/,$line,16);
624: next if($strip =~ /.*\.meta$/ | $obs eq '1');
625: my (@fileparts) = split(/\./,$strip);
626: if ($hash{'display_attrs_9'} != 1) {
627: # if not all versions to be shown
628: if (scalar(@fileparts) >= 3) {
629: my $fext = pop @fileparts;
630: my $ov = pop @fileparts;
631: my $fname = join ('.',@fileparts,$fext);
632: next if (grep /\Q$fname\E/,@list and $ov =~ /^\d+$/);
633: }
634: }
635:
636: if ($dom eq 'domain') {
637: # dom list has full path /res/<domain name>/ already
638: $curdir='';
639: $compuri = (split(/\&/,$line))[0];
640: } else {
641: # user, dir & file have name only, i.e., w/o path
642: $compuri = join('',$startdir,$strip,'/');
643: $curdir = $startdir;
644: }
645: my $diropen = 'closed';
646: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/) or ($compuri=~/\.(sequence|page)\/$/)) {
647: while (my ($key,$val)= each %dupdirs) {
648: if ($key eq $compuri and $val eq "open") {
649: $diropen = "opened";
650: delete($dupdirs{$key});
651: delete($dirs{$key});
652: }
653: }
654: }
655: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
656: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
657: }
658: $indent--;
659: }
660:
661: # --------------- get complete matched list based on the uri (returns an array)
662: sub get_list {
663: my ($r,$uri)=@_;
664: my @list=();
665: (my $luri = $uri) =~ s/\//_/g;
666: if ($env{'form.updatedisplay'}) {
667: foreach (keys %hash) {
668: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
669: delete $hash{$_} if ($_ =~ /^dirlist_timestamp_files_/);
670: }
671: }
672:
673: if (defined($hash{'dirlist_files_'.$luri}) &&
674: $hash{'dirlist_timestamp_files_'.$luri}+600 > (time)) {
675: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
676: } elsif ($uri=~/\.(page|sequence)\/$/) {
677: # is a page or a sequence
678: $uri=~s/\/$//;
679: $uri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
680: $uri=~s/\/+/\//g;
681: foreach (&Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$uri))) {
682: my @ratpart=split(/\:/,$_);
683: push(@list,&LONCAPA::map::qtescape($ratpart[1]));
684: }
685: $hash{'dirlist_files_'.$luri} = join("\n",@list);
686: } else {
687: # is really a directory
688: @list = &Apache::lonnet::dirlist($uri);
689: $hash{'dirlist_files_'.$luri} = join("\n",@list);
690: $hash{'dirlist_timestamp_files_'.$luri} = time;
691: }
692: return @list=&match_ext($r,@list);
693: }
694:
695: sub dynmetaread {
696: my $uri=shift;
697: if (($hash{'display_attrs_8'}==1) || ($hash{'display_attrs_11'}==1)) {
698: # We don't want the filename
699: $uri=~s/\/[^\/]+$//;
700: # Did we already see this?
701: my $builddir=$uri;
702: while ($builddir) {
703: if ($dynread{$builddir}) {
704: return 0;
705: }
706: $builddir=~s/\/[^\/]+$//;
707: }
708: # Actually get the data
709: %dynhash=
710: (%dynhash,&Apache::lonmeta::get_dynamic_metadata_from_sql($uri.'/'));
711: # Remember that we got it
712: $dynread{$uri}=1;
713: }
714: }
715:
716: sub initdebug {
717: my $start_page=
718: &Apache::loncommon::start_page('Debug',undef,
719: {'only_body' => 1,});
720: $start_page =~ s/\n/ /g;
721: return <<ENDJS;
722: <script type="text/javascript">
723: var debugging = true;
724: if (debugging) {
725: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
726: }
727:
728: function output(text) {
729: if (debugging) {
730: debuggingWindow.document.writeln(text);
731: }
732: }
733: output('$start_page<pre>');
734: </script>
735: ENDJS
736: }
737:
738: sub writedebug {
739: my ($text) = @_;
740: return "<script type=\"text/javascript\">output('$text');</script>";
741: }
742:
743: # -------------------- filters out files based on extensions (returns an array)
744: sub match_ext {
745: my ($r,@packlist)=@_;
746: my @trimlist;
747: my $nextline;
748: my @fileext;
749: my $dirptr=16384;
750:
751: foreach my $line (@packlist) {
752: chomp $line;
753: $line =~ s/^\/home\/httpd\/html//;
754: my @unpackline = split (/\&/,$line);
755: next if ($unpackline[0] eq '.');
756: next if ($unpackline[0] eq '..');
757: my @filecom = split (/\./,$unpackline[0]);
758: my $fext = pop(@filecom);
759: my $fnptr = ($unpackline[3]&$dirptr) || ($fext=~/\.(page|sequence)$/);
760: if ($fnptr == 0 and $unpackline[3] ne "") {
761: my $embstyle = &Apache::loncommon::fileembstyle($fext);
762: push @trimlist,$line if (defined($embstyle) &&
763: ($embstyle ne 'hdn' or $fext eq 'meta'));
764: } else {
765: push @trimlist,$line;
766: }
767: }
768: @trimlist = sort {uc($a) cmp uc($b)} (@trimlist);
769: return @trimlist;
770: }
771:
772: # ------------------------------- displays one line in appropriate table format
773: sub display_line {
774: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
775: my (@pathfn, $fndir);
776: # there could be relative paths (files actually belonging into this directory)
777: # or absolute paths (for example, from sequences)
778: my $absolute;
779: my $pathprefix;
780: if ($line=~m|^/res/| && $startdir ne '') {
781: $absolute=1;
782: $pathprefix='';
783: } else {
784: $absolute=0;
785: $pathprefix=$startdir;
786: }
787: my $dirptr=16384;
788: my $fileclr="#ffffe6";
789: my $iconpath= $r->dir_config('lonIconsURL') . '/';
790:
791: my @filecom = split (/\&/,$line);
792: my @pathcom = split (/\//,$filecom[0]);
793: my $listname = $pathcom[scalar(@pathcom)-1];
794: my $fnptr = $filecom[3]&$dirptr;
795: my $msg = &mt('View').' '.$filecom[0].' '.&mt('resources');
796: $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
797:
798: my $tabtag='</td>';
799: my $i=0;
800: while ($i<=11) {
801: $tabtag=join('',$tabtag,"<td> </td>")
802: if ($i != 9 &&
803: $hash{'display_attrs_'.$i} == 1);
804: $i++;
805: }
806: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
807:
808: # display uplink arrow
809: if ($filecom[1] eq 'viewOneUp') {
810: my $updir=$startdir;
811: # -------------- Filter out sequence containment in crumbs and "recent folders"
812: $updir='/'.(split(/\.(page|sequence)\/\//,$startdir))[-1];
813: $updir=~s/\/+/\//g;
814:
815: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
816: $r->print("<td>\n");
817: $r->print ('<form method="post" name="dirpathUP" action="'.$updir.
818: '/" '.
819: 'onSubmit="return rep_dirpath(\'UP\','.
820: 'document.forms.fileattr.acts.value)" '.
821: 'enctype="application/x-www-form-urlencoded"'.
822: '>'."\n");
823: $r->print ('<input type=hidden name=openuri value="'.
824: $startdir.'" />'."\n");
825: $r->print ('<input type="hidden" name="acts" value="" />'."\n");
826: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
827: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
828: "\n");
829: $r->print(&mt("Up")."</form>$tabtag</tr>\n");
830: return OK;
831: }
832: # Do we have permission to look at this?
833:
834: if($filecom[15] ne '1') { return OK if (!&Apache::lonnet::allowed('bre',$pathprefix.$filecom[0])); }
835:
836: # make absolute links appear on different background
837: if ($absolute) { $fileclr='#ccdd99'; }
838:
839: # display domain
840: if ($filecom[1] eq 'domain') {
841: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n")
842: if ($env{'form.dirPointer'} eq "on");
843: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
844: $r->print("<td>");
845: &begin_form ($r,$filecom[0]);
846: my $anchor = $filecom[0];
847: $anchor =~ s/\///g;
848: $r->print ('<a name="'.$anchor.'"></a>');
849: $r->print ('<input type="hidden" name="acts" value="" />');
850: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
851: $diropen.'.gif"');
852: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
853: "\n");
854: my $quotable_filecom = &Apache::loncommon::escape_single($filecom[0]);
855: $r->print ('<a href="javascript:gothere(\''.$quotable_filecom.
856: '\')"><img alt="" src="'.$iconpath.'server.gif"');
857: $r->print (' border="0" /></a>'."\n");
858: $r->print (&mt("Domain")." - $listname ");
859: if ($Apache::lonnet::domaindescription{$listname}) {
860: $r->print("(".$Apache::lonnet::domaindescription{$listname}.
861: ")");
862: }
863: $r->print ("</form>$tabtag</tr>\n");
864: return OK;
865:
866: # display user directory
867: }
868: if ($filecom[1] eq 'user') {
869: $r->print("<tr valign=$valign bgcolor=$fileclr>$extrafield");
870: $r->print("<td nowrap>\n");
871: my $curdir = $startdir.$filecom[0].'/';
872: my $anchor = $curdir;
873: $anchor =~ s/\///g;
874: &begin_form ($r,$curdir);
875: $r->print ('<a name="'.$anchor.'"></a><img alt="" src="'.$iconpath.
876: 'whitespace1.gif" border="0" />'."\n");
877: $r->print ('<input type="hidden" name="acts" value="" />');
878: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
879: '.gif"');
880: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
881: "\n");
882: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
883: $r->print ('<a href="javascript:gothere(\''.$quotable_curdir
884: .'\')"><img alt="" src='.
885: $iconpath.'quill.gif border="0" name="'.$msg.
886: '" height="22" /></a>');
887: my $domain=(split(m|/|,$startdir))[2];
888: my $plainname=&Apache::loncommon::plainname($listname,$domain);
889: $r->print ($listname);
890: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
891: $r->print ('</form>'.$tabtag.'</tr>'."\n");
892: return OK;
893: }
894:
895: # display file
896: if (($fnptr == 0 and $filecom[3] ne '') or $absolute) {
897: my $filelink = $pathprefix.$filecom[0];
898: my @file_ext = split (/\./,$listname);
899: my $curfext = $file_ext[-1];
900: if (@Omit) {
901: foreach (@Omit) { return OK if ($curfext eq $_); }
902: }
903: if (@Only) {
904: my $skip = 1;
905: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
906: return OK if ($skip > 0);
907: }
908: # Set the icon for the file
909: my $iconname = &Apache::loncommon::icon($listname);
910: $r->print("<tr valign='$valign' bgcolor=$fileclr><td nowrap='nowrap' valign='top'>");
911:
912: if ($env{'form.catalogmode'} eq 'interactive') {
913: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
914: $r->print("<a href=\"javascript:select_data(\'",
915: $quotable_filelink,"')\">");
916: $r->print("<img alt=\"\" src='",$iconpath,"select.gif' border='0' /></a>".
917: "\n");
918: $r->print("</td><td nowrap='nowrap' valign='top'>");
919: } elsif ($env{'form.catalogmode'} eq 'import') {
920: $r->print("<form name='form$fnum' action=''>\n");
921: $r->print("<input type='checkbox' name='filelink"."' ".
922: "value='$filelink' onClick='".
923: "javascript:queue(\"form$fnum\")' ");
924: if ($hash{'store_'.$filelink}) {
925: $r->print("checked");
926: }
927: $r->print(" />\n");
928: $r->print("</form></td><td nowrap='nowrap' valign='top'>");
929: $hash{"pre_${fnum}_link"}=$filelink;
930: $fnum++;
931: }
932: # Form to open or close sequences
933: if ($filelink=~/\.(page|sequence)$/) {
934: my $curdir = $startdir.$filecom[0].'/';
935: my $anchor = $curdir;
936: $anchor =~ s/\///g;
937: &begin_form($r,$curdir);
938: $indent--;
939: }
940: # General indentation
941: if ($indent > 0 and $indent < 11) {
942: $r->print("<img alt=\"\" src=",$iconpath,"whitespace",$indent,
943: ".gif border='0' />\n");
944: } elsif ($indent >0) {
945: my $ten = int($indent/10.);
946: my $rem = $indent%10.0;
947: my $count = 0;
948: while ($count < $ten) {
949: $r->print("<img alt=\"\" src=",$iconpath,
950: "whitespace10.gif border='0' />\n");
951: $count++;
952: }
953: $r->print("<img alt=\"\" src=",$iconpath,"whitespace",$rem,
954: ".gif border='0' />\n") if $rem > 0;
955: }
956: # Sequence open/close icon
957: if ($filelink=~/\.(page|sequence)$/) {
958: my $curdir = $startdir.$filecom[0].'/';
959: my $anchor = $curdir;
960: $anchor =~ s/\///g;
961: $r->print ('<input type="hidden" name="acts" value="" />');
962: $r->print ('<a name="'.$anchor.'"></a><input src="'.$iconpath.
963: 'folder_pointer_'.$diropen.'.gif"');
964: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
965: "\n");
966: }
967: # Filetype icons
968: $r->print("<img alt=\"\" src='$iconname' border='0' />\n");
969: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
970:
971:
972: $r->print (" <a href=\"javascript:openWindow('".$quotable_filelink.
973: "', 'previewfile', '450', '500', 'no', 'yes','yes');\"".
974: " target=\"_self\">$listname</a> ");
975:
976: $r->print (" (<a href=\"javascript:openWindow('".$quotable_filelink.
977: ".meta', 'metadatafile', '500', '550', 'no', 'yes','no');\" ".
978: " target=\"_self\">metadata</a>) ");
979: # Close form to open/close sequence
980: if ($filelink=~/\.(page|sequence)$/) {
981: $r->print('</form>');
982: }
983: $r->print("</td>\n");
984: if ($hash{'display_attrs_0'} == 1) {
985: my $title = &Apache::lonnet::gettitle($filelink,'title');
986: $r->print('<td> '.($title eq '' ? ' ' : $title).
987: ' </td>'."\n");
988: }
989: $r->print('<td align=right> ',
990: $filecom[8]," </td>\n")
991: if $hash{'display_attrs_1'} == 1;
992: $r->print('<td> '.
993: (localtime($filecom[9]))." </td>\n")
994: if $hash{'display_attrs_2'} == 1;
995: $r->print('<td> '.
996: (localtime($filecom[10]))." </td>\n")
997: if $hash{'display_attrs_3'} == 1;
998:
999: if ($hash{'display_attrs_4'} == 1) {
1000: my $author = &Apache::lonnet::metadata($filelink,'author');
1001: $r->print('<td> '.($author eq '' ? ' ' : $author).
1002: " </td>\n");
1003: }
1004: if ($hash{'display_attrs_5'} == 1) {
1005: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1006: # $keywords = ' ' if (!$keywords);
1007: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1008: " </td>\n");
1009: }
1010: #'
1011:
1012: if ($hash{'display_attrs_6'} == 1) {
1013: my $lang = &Apache::lonnet::metadata($filelink,'language');
1014: $lang = &Apache::loncommon::languagedescription($lang);
1015: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1016: " </td>\n");
1017: }
1018: if ($hash{'display_attrs_8'} == 1) {
1019: # statistics
1020: &dynmetaread($filelink);
1021: $r->print("<td>");
1022: &dynmetaprint($r,$filelink,'count');
1023: &dynmetaprint($r,$filelink,'course');
1024: &dynmetaprint($r,$filelink,'stdno');
1025: &dynmetaprint($r,$filelink,'avetries');
1026: &dynmetaprint($r,$filelink,'difficulty');
1027: &dynmetaprint($r,$filelink,'disc');
1028: &dynmetaprint($r,$filelink,'clear');
1029: &dynmetaprint($r,$filelink,'technical');
1030: &dynmetaprint($r,$filelink,'correct');
1031: &dynmetaprint($r,$filelink,'helpful');
1032: &dynmetaprint($r,$filelink,'depth');
1033: $r->print(" </td>\n");
1034:
1035: }
1036: if ($hash{'display_attrs_10'} == 1) {
1037: my $source = &Apache::lonnet::metadata($filelink,'sourceavail');
1038: if($source eq 'open') {
1039: my $sourcelink = &Apache::lonsource::make_link($filelink,$listname);
1040: my $quotable_sourcelink = &Apache::loncommon::escape_single($sourcelink);
1041: $r->print('<td>'."<a href=\"javascript:openWindow('"
1042: .$quotable_sourcelink.
1043: "', 'previewsource', '700', '700', 'no', 'yes','yes');\"".
1044: " target=\"_self\">Yes</a> "."</td>\n");
1045: } else { #A cuddled else. :P
1046: $r->print("<td> </td>\n");
1047: }
1048: }
1049: if ($hash{'display_attrs_11'} == 1) {
1050: # links
1051: &dynmetaread($filelink);
1052: $r->print('<td>');
1053: &coursecontext($r,$filelink);
1054: &dynmetaprint($r,$filelink,'goto_list');
1055: &dynmetaprint($r,$filelink,'comefrom_list');
1056: &dynmetaprint($r,$filelink,'sequsage_list');
1057: &dynmetaprint($r,$filelink,'dependencies');
1058: &dynmetaprint($r,$filelink,'course_list');
1059: $r->print('</td>');
1060: }
1061: if ($hash{'display_attrs_7'} == 1) {
1062: # Show resource
1063: my $output=&showpreview($filelink);
1064: $r->print('<td> '.($output eq '' ? ' ':$output).
1065: " </td>\n");
1066: }
1067: $r->print("</tr>\n");
1068: }
1069:
1070: # -- display directory
1071: if ($fnptr == $dirptr) {
1072: my $curdir = $startdir.$filecom[0].'/';
1073: my $anchor = $curdir;
1074: $anchor =~ s/\///g;
1075: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=$valign>");
1076: &begin_form ($r,$curdir);
1077: my $indentm1 = $indent-1;
1078: if ($indentm1 < 11 and $indentm1 > 0) {
1079: $r->print("<img alt=\"\" src=",$iconpath,"whitespace",$indentm1,
1080: ".gif border='0' />\n");
1081: } else {
1082: my $ten = int($indentm1/10.);
1083: my $rem = $indentm1%10.0;
1084: my $count = 0;
1085: while ($count < $ten) {
1086: $r->print ("<img alt=\"\" src=",$iconpath
1087: ,"whitespace10.gif border='0' />\n");
1088: $count++;
1089: }
1090: $r->print ("<img alt=\"\" src=",$iconpath,"whitespace",$rem,
1091: ".gif border='0' />\n") if $rem > 0;
1092: }
1093: $r->print ('<input type="hidden" name="acts" value="" />');
1094: $r->print ('<a name="'.$anchor.'"></a><input src="'.$iconpath.
1095: 'folder_pointer_'.$diropen.'.gif"');
1096: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
1097: "\n");
1098: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
1099: $r->print ('<a href="javascript:gothere(\''
1100: .$quotable_curdir.'\')">'
1101: .'<img alt="'.&mt('Open Folder').'"src="'.
1102: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
1103: "\n");
1104: $r->print ("$listname</form></td>\n");
1105: # Attributes
1106: my $filelink = $startdir.$filecom[0].'/default';
1107:
1108: if ($hash{'display_attrs_0'} == 1) {
1109: my $title = &Apache::lonnet::gettitle($filelink,'title');
1110: $r->print('<td> '.($title eq '' ? ' ' : $title).
1111: ' </td>'."\n");
1112: }
1113: $r->print('<td align=right> ',
1114: $filecom[8]," </td>\n")
1115: if $hash{'display_attrs_1'} == 1;
1116: $r->print('<td> '.
1117: (localtime($filecom[9]))." </td>\n")
1118: if $hash{'display_attrs_2'} == 1;
1119: $r->print('<td> '.
1120: (localtime($filecom[10]))." </td>\n")
1121: if $hash{'display_attrs_3'} == 1;
1122:
1123: if ($hash{'display_attrs_4'} == 1) {
1124: my $author = &Apache::lonnet::metadata($filelink,'author');
1125: $r->print('<td> '.($author eq '' ? ' ' : $author).
1126: " </td>\n");
1127: }
1128: if ($hash{'display_attrs_5'} == 1) {
1129: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1130: # $keywords = ' ' if (!$keywords);
1131: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1132: " </td>\n");
1133: }
1134: if ($hash{'display_attrs_6'} == 1) {
1135: my $lang = &Apache::lonnet::metadata($filelink,'language');
1136: $lang = &Apache::loncommon::languagedescription($lang);
1137: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1138: " </td>\n");
1139: }
1140: if ($hash{'display_attrs_8'} == 1) {
1141: $r->print('<td> </td>');
1142: }
1143: if ($hash{'display_attrs_10'} == 1) {
1144: $r->print('<td> </td>');
1145: }
1146: if ($hash{'display_attrs_11'} == 1) {
1147: $r->print('<td> </td>');
1148: }
1149: if ($hash{'display_attrs_7'} == 1) {
1150: $r->print('<td> </td>');
1151: }
1152: $r->print('</tr>');
1153: }
1154:
1155: }
1156:
1157: sub coursecontext {
1158: my ($r,$filelink)=@_;
1159: my $filesymb=&Apache::lonnet::symbread($filelink);
1160: if ($filesymb) {
1161: my ($map,$index,$resource)=&Apache::lonnet::decode_symb($filesymb);
1162: $r->print(&mt('Already in this course:<br />[_1] in folder/map [_2].<br />',
1163: &Apache::lonnet::gettitle($resource),
1164: &Apache::lonnet::gettitle($map)));
1165: }
1166: }
1167:
1168: sub showpreview {
1169: my ($filelink)=@_;
1170: if ($filelink=~m-^(/ext/|http://)-) {
1171: return &mt('External Resource, preview not enabled');
1172: }
1173: my ($curfext)=($filelink=~/\.(\w+)$/);
1174: my $output='';
1175: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
1176: if ($embstyle eq 'ssi') {
1177: my $cache=$Apache::lonnet::perlvar{'lonDocRoot'}.$filelink.
1178: '.tmp';
1179: if ((!$env{'form.updatedisplay'}) &&
1180: (-e $cache)) {
1181: open(FH,$cache);
1182: $output=join("\n",<FH>);
1183: close(FH);
1184: } else {
1185: # In update display mode, remove old cache. This is done to retroactively
1186: # clean up course context renderings.
1187: if (-e $cache) {
1188: unlink($cache);
1189: }
1190: $output=&Apache::lonnet::ssi_body($filelink);
1191: # Is access denied? Don't render, don't store
1192: if ($output=~/LONCAPAACCESSCONTROLERRORSCREEN/s) {
1193: $output='';
1194: # Was this rendered in course content? Don't store
1195: } elsif (!&Apache::lonnet::symbread($filelink)) {
1196: open(FH,">$cache");
1197: print FH $output;
1198: close(FH);
1199: }
1200: }
1201: $output='<font size="-2">'.$output.'</font>';
1202: } elsif ($embstyle eq 'img') {
1203: $output='<img alt="'.&mt('Preview').'" src="'.$filelink.'" />';
1204: } elsif ($filelink=~m{^/res/($match_domain)/($match_username)/}) {
1205: $output='<img alt="'.&mt('Preview').'" src="http://'.
1206: &Apache::lonnet::hostname(&Apache::lonnet::homeserver($2,$1)).
1207: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
1208: }
1209: return $output;
1210: }
1211:
1212: sub dynmetaprint {
1213: my ($r,$filelink,$item)=@_;
1214: if ($dynhash{$filelink}->{$item}) {
1215: $r->print("\n<br />".$fieldnames{$item}.': '.
1216: &Apache::lonmeta::prettyprint($item,
1217: $dynhash{$filelink}->{$item},
1218: (($env{'form.catalogmode'} ne 'import')?'preview':''),
1219: '',
1220: (($env{'form.catalogmode'} eq 'import')?'document.forms.fileattr':''),1));
1221: }
1222: }
1223:
1224: # ------------------- prints the beginning of a form for directory or file link
1225: sub begin_form {
1226: my ($r,$uri) = @_;
1227: my $anchor = $uri;
1228: $anchor =~ s/\///g;
1229: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
1230: '#'.$anchor.
1231: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
1232: ',document.forms.fileattr.acts.value)" '.
1233: 'enctype="application/x-www-form-urlencoded">'."\n");
1234: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'" />'.
1235: "\n");
1236: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n");
1237: $dnum++;
1238: }
1239:
1240: # --------- settings whenever the user causes the indexer window to be launched
1241: sub start_fresh_session {
1242: my ($hash) = @_;
1243: delete $hash->{'form.catalogmode'};
1244: delete $hash->{'form.mode'};
1245: delete $hash->{'form.form'};
1246: delete $hash->{'form.element'};
1247: delete $hash->{'form.omit'};
1248: delete $hash->{'form.only'};
1249: foreach (keys %{$hash}) {
1250: delete $hash->{$_} if (/^(pre_|store)/);
1251: }
1252: }
1253:
1254: # ------------------------------------------------------------------- setvalues
1255: sub setvalues {
1256: # setvalues is used in registerurl to synchronize the database
1257: # hash and environment hashes
1258: my ($H1,$h1key,$H2,$h2key) =@_;
1259: #
1260: if (exists $H2->{$h2key}) {
1261: $H1->{$h1key} = $H2->{$h2key};
1262: } elsif (exists $H1->{$h1key}) {
1263: $H2->{$h2key} = $H1->{$h1key};
1264: }
1265: }
1266:
1267: 1;
1268:
1269: sub cleanup {
1270: if (tied(%hash)){
1271: &Apache::lonnet::logthis('Cleanup indexer: hash');
1272: }
1273: return OK;
1274: }
1275:
1276:
1277:
1278:
1279:
1280: =head1 NAME
1281:
1282: Apache::lonindexer - mod_perl module for cross server filesystem browsing
1283:
1284: =head1 SYNOPSIS
1285:
1286: Invoked by /etc/httpd/conf/srm.conf:
1287:
1288: <LocationMatch "^/res.*/$">
1289: SetHandler perl-script
1290: PerlHandler Apache::lonindexer
1291: </LocationMatch>
1292:
1293: =head1 INTRODUCTION
1294:
1295: This module enables a scheme of browsing across a cross server.
1296:
1297: This is part of the LearningOnline Network with CAPA project
1298: described at http://www.lon-capa.org.
1299:
1300: =head1 BEGIN SUBROUTINE
1301:
1302: This routine is only run once after compilation.
1303:
1304: =over 4
1305:
1306: =item *
1307:
1308: Initializes %language hash table.
1309:
1310: =back
1311:
1312: =head1 HANDLER SUBROUTINE
1313:
1314: This routine is called by Apache and mod_perl.
1315:
1316: =over 4
1317:
1318: =item *
1319:
1320: read in machine configuration variables
1321:
1322: =item *
1323:
1324: see if called from an interactive mode
1325:
1326: =item *
1327:
1328: refresh environment with user database values (in %hash)
1329:
1330: =item *
1331:
1332: define extra fields and buttons in case of special mode
1333:
1334: =item *
1335:
1336: set catalogmodefunctions to have extra needed javascript functionality
1337:
1338: =item *
1339:
1340: print header
1341:
1342: =item *
1343:
1344: evaluate actions from previous page (both cumulatively and chronologically)
1345:
1346: =item *
1347:
1348: output title
1349:
1350: =item *
1351:
1352: get state of file attributes to be showing
1353:
1354: =item *
1355:
1356: output state of file attributes to be showing
1357:
1358: =item *
1359:
1360: output starting row to the indexed file/directory hierarchy
1361:
1362: =item *
1363:
1364: read in what directories have previously been set to "open"
1365:
1366: =item *
1367:
1368: if not at top level, provide an uplink arrow
1369:
1370: =item *
1371:
1372: recursively go through all the directories and output as appropriate
1373:
1374: =item *
1375:
1376: information useful for group import
1377:
1378: =item *
1379:
1380: end the tables
1381:
1382: =item *
1383:
1384: end the output and return
1385:
1386: =back
1387:
1388: =head1 OTHER SUBROUTINES
1389:
1390: =over 4
1391:
1392: =item *
1393:
1394: scanDir - recursive scan of a directory
1395:
1396: =item *
1397:
1398: get_list - get complete matched list based on the uri (returns an array)
1399:
1400: =item *
1401:
1402: match_ext - filters out files based on extensions (returns an array)
1403:
1404: =item *
1405:
1406: display_line - displays one line in appropriate table format
1407:
1408: =item *
1409:
1410: begin_form - prints the beginning of a form for directory or file link
1411:
1412: =item *
1413:
1414: start_fresh_session - settings whenever the user causes the indexer window
1415: to be launched
1416:
1417: =back
1418:
1419: =cut
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