1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.151 2006/07/31 19:45:57 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:
58: # ---------------------------------------- variables used throughout the module
59: my %hash; # global user-specific gdbm file
60: my %dirs; # keys are directories, values are the open/close status
61: my %language; # has the reference information present in language.tab
62: my %dynhash; # hash of hashes for dynamic metadata
63: my %dynread; # hash of directories already read for dynamic metadata
64: my %fieldnames; # Metadata fieldnames
65: # ----- Values which are set by the handler subroutine and are accessible to
66: # ----- other methods.
67: my $extrafield; # default extra table cell
68: my $fnum; # file counter
69: my $dnum; # directory counter
70:
71: # ----- Used to include or exclude files with certain extensions.
72: my @Only = ();
73: my @Omit = ();
74:
75:
76:
77:
78: # ----------------------------- Handling routine called via Apache and mod_perl
79: sub handler {
80: my $r = shift;
81: my $c = $r->connection();
82: &Apache::loncommon::content_type($r,'text/html');
83: &Apache::loncommon::no_cache($r);
84: $r->send_http_header;
85: return OK if $r->header_only;
86: $fnum=0;
87: $dnum=0;
88:
89: # Deal with stupid global variables (is there a way around making
90: # these global to this package? It is just so wrong....)
91: undef (@Only);
92: undef (@Omit);
93: %fieldnames=&Apache::lonmeta::fieldnames();
94:
95: # ------------------------------------- read in machine configuration variables
96: my $iconpath= $r->dir_config('lonIconsURL') . "/";
97: my $domain = $r->dir_config('lonDefDomain');
98: my $role = $r->dir_config('lonRole');
99: my $loadlim = $r->dir_config('lonLoadLim');
100: my $servadm = $r->dir_config('lonAdmEMail');
101: my $sysadm = $r->dir_config('lonSysEMail');
102: my $lonhost = $r->dir_config('lonHostID');
103: my $tabdir = $r->dir_config('lonTabDir');
104:
105: my $fileclr='#ffffe6';
106: my $line;
107: my (@attrchk,@openpath);
108: my $uri=$r->uri;
109:
110: # -------------------------------------- see if called from an interactive mode
111: # Get the parameters from the query string
112: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
113: ['catalogmode','launch','acts','mode','form','element',
114: 'only','omit','titleelement']);
115: #-------------------------------------------------------------------
116: my $closebutton='';
117: my $groupimportbutton='';
118: my $colspan='';
119:
120: $extrafield='';
121: my $diropendb =
122: "/home/httpd/perl/tmp/$env{'user.domain'}_$env{'user.name'}_sel_res.db";
123: %hash = ();
124: {
125: my %dbfile;
126: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_WRITER(),0640)) {
127: if ($env{'form.launch'} eq '1') {
128: &start_fresh_session(\%dbfile);
129: }
130:
131: while(my($key,$value)=each(%dbfile)) {
132: $hash{$key}=$value;
133: }
134: untie(%dbfile);
135: }
136: }
137: {
138: #Hijack lonindexer to verify a title and be close down.
139: if ($env{'form.launch'} eq '2') {
140: &Apache::loncommon::content_type($r,'text/html');
141: my $extra='';
142: if (defined($env{'form.titleelement'}) &&
143: $env{'form.titleelement'} ne '') {
144: my $verify_title = &Apache::lonnet::gettitle($env{'form.acts'});
145: # &Apache::lonnet::logthis("Hrrm $env{'form.acts'} -- $verify_title");
146: $verify_title=~s/'/\\'/g;
147: $extra='window.opener.document.forms["'.$env{'form.form'}.'"].elements["'.$env{'form.titleelement'}.'"].value=\''.$verify_title.'\';';
148: }
149: my $js = <<ENDSUBM;
150: <script type="text/javascript">
151: function load() {
152: window.opener.document.forms["$env{'form.form'}"]
153: .elements["$env{'form.element'}"]
154: .value='$env{'form.acts'}';
155: $extra
156: window.close();
157: }
158: </script>
159: ENDSUBM
160: $r->print(&Apache::loncommon::start_page(undef,$js,
161: {'only_body' =>1,
162: 'add_entries' =>
163: {'onload' => "load();"},}
164: ).
165: &Apache::loncommon::end_page());
166: return OK;
167: }
168:
169: # -------------------- refresh environment with user database values (in %hash)
170: &setvalues(\%hash,'form.catalogmode',\%env,'form.catalogmode' );
171:
172: # --------------------- define extra fields and buttons in case of special mode
173: if ($env{'form.catalogmode'} eq 'interactive') {
174: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
175: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
176: ' border="0" /></td>';
177: $colspan=" colspan='2' ";
178: my $cl=&mt('Close');
179: $closebutton=<<END;
180: <input type="button" name="close" value='$cl' onClick="self.close()" />
181: END
182: }
183: elsif ($env{'form.catalogmode'} eq 'import') {
184: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
185: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
186: ' border="0" /></td>';
187: $colspan=" colspan='2' ";
188: my $cl=&mt('Close');
189: my $gi=&mt('Import');
190: $closebutton=<<END;
191: <input type="button" name="close" value='$cl' onClick="self.close()" />
192: END
193: $groupimportbutton=<<END;
194: <input type="button" name="groupimport" value='$gi'
195: onClick="javascript:select_group()" />
196: END
197: }
198: # Additions made by Matthew to make the browser a little easier to deal
199: # with in the future.
200: #
201: # $mode (at this time) indicates if we are in edit mode.
202: # $form is the name of the form that the URL is placed when the
203: # selection is made.
204: # $element is the name of the element in $formname which receives
205: # the URL.
206: #&Apache::lonxml::debug('Checking mode, form, element');
207: &setvalues(\%hash,'form.mode' ,\%env,'form.mode' );
208: &setvalues(\%hash,'form.form' ,\%env,'form.form' );
209: &setvalues(\%hash,'form.element' ,\%env,'form.element');
210: &setvalues(\%hash,'form.titleelement',\%env,'form.titleelement');
211: &setvalues(\%hash,'form.only' ,\%env,'form.only' );
212: &setvalues(\%hash,'form.omit' ,\%env,'form.omit' );
213:
214: # Deal with 'omit' and 'only'
215: if (exists $env{'form.omit'}) {
216: @Omit = split(',',$env{'form.omit'});
217: }
218: if (exists $env{'form.only'}) {
219: @Only = split(',',$env{'form.only'});
220: }
221:
222: my $mode = $env{'form.mode'};
223: my ($form,$element,$titleelement);
224: if ($mode eq 'edit' || $mode eq 'parmset') {
225: $form = $env{'form.form'};
226: $element = $env{'form.element'};
227: $titleelement = $env{'form.titleelement'};
228: }
229: #&Apache::lonxml::debug("mode=$mode form=$form element=$element titleelement=$titleelement");
230: # ------ set catalogmodefunctions to have extra needed javascript functionality
231: my $catalogmodefunctions='';
232: if ($env{'form.catalogmode'} eq 'interactive' or
233: $env{'form.catalogmode'} eq 'import') {
234: # The if statement below sets us up to use the old version
235: # by default (ie. if $mode is undefined). This is the easy
236: # way out. Hopefully in the future I'll find a way to get
237: # the calls dealt with in a more comprehensive manner.
238:
239: #
240: # There is now also mode "simple", which is for the simple version of the rat
241: #
242: #
243: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
244: my $location = "/adm/groupsort?catalogmode=import&";
245: $location .= "mode=".$mode."&";
246: $location .= "acts=";
247: $catalogmodefunctions=<<"END";
248: function select_data(url) {
249: changeURL(url);
250: self.close();
251: }
252: function select_group() {
253: window.location="$location"+document.forms.fileattr.acts.value;
254: }
255: function changeURL(val) {
256: if (opener.inf) {
257: if (opener.inf.document.forms.resinfo.elements.u) {
258: opener.inf.document.forms.resinfo.elements.u.value=val;
259: }
260: }
261: }
262: END
263: } elsif ($mode eq 'edit') { # we are in 'edit' mode
264: my $location = "/adm/groupsort?catalogmode=interactive&";
265: $location .= "form=$form&element=$element&mode=edit&acts=";
266: $catalogmodefunctions=<<END;
267: // mode = $mode
268: function select_data(url) {
269: var location = "/res/?launch=2&form=$form&element=$element&titleelement=$titleelement&acts=" + url;
270: window.location=location;
271: }
272: function select_group() {
273: window.location="$location"+document.forms.fileattr.acts.value;
274: }
275:
276: function changeURL(val) {
277: if (window.opener.document) {
278: window.opener.document.forms["$form"].elements["$element"].value=val;
279: } else {
280: alert("The file you selected is: "+val);
281: }
282: }
283: END
284: if (!$titleelement) {
285: $catalogmodefunctions.='function changeTitle(val) {}';
286: } else {
287: $catalogmodefunctions.=<<END;
288: function changeTitle(val) {
289: if (window.opener.document) {
290: window.opener.document.forms["$form"].elements["$titleelement"].value=val;
291: } else {
292: alert("The title of the file you selected is: "+val);
293: }
294: }
295: END
296: }
297: } elsif ($mode eq 'parmset') {
298: my $location = "/adm/groupsort?catalogmode=interactive&";
299: $location .= "form=$form&element=$element&mode=parmset&acts=";
300: $catalogmodefunctions=<<END;
301: // mode = $mode
302: function select_data(url) {
303: changeURL(url);
304: self.close();
305: }
306:
307: function select_group() {
308: window.location="$location"+document.forms.fileattr.acts.value;
309: }
310:
311: function changeURL(val) {
312: if (window.opener.document) {
313: var elementname = "$element"+"_value";
314: var checkboxname = "$element"+"_setparmval";
315: window.opener.document.forms["$form"].elements[elementname].value=val;
316: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
317: } else {
318: alert("The file you selected is: "+val);
319: }
320: }
321:
322: END
323: }
324: }
325: $catalogmodefunctions.=<<END;
326: var acts='';
327: function rep_dirpath(suffix,val) {
328: eval("document.forms.dirpath"+suffix+".acts.value=val");
329: }
330: END
331: if ($env{'form.catalogmode'} eq 'import') {
332: $catalogmodefunctions.=<<END;
333: function queue(val) {
334: if (eval("document.forms."+val+".filelink.checked")) {
335: var l=val.length;
336: var v=val.substring(4,l);
337: document.forms.fileattr.acts.value+='1a'+v+'b';
338: }
339: else {
340: var l=val.length;
341: var v=val.substring(4,l);
342: document.forms.fileattr.acts.value+='0a'+v+'b';
343: }
344: }
345: END
346: }
347:
348: # ---------------------------------------------------------------- Print Header
349: my $js = <<"ENDHEADER";
350: <script type="text/javascript">
351: $catalogmodefunctions
352: function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
353: var xpos = (screen.width-w)/2;
354: xpos = (xpos < 0) ? '0' : xpos;
355: var ypos = (screen.height-h)/2-30;
356: ypos = (ypos < 0) ? '0' : ypos;
357: var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
358: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
359: options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
360: var newWin = window.open(url, wdwName, options);
361: newWin.focus();
362: }
363: function gothere(val) {
364: window.location=val+'?acts='+document.forms.fileattr.acts.value;
365: }
366: </script>
367: ENDHEADER
368:
369: my ($headerdom)=($uri=~/^\/res\/(\w+)\//);
370: $r->print(&Apache::loncommon::start_page('Browse Resources',$js,
371: {'domain' => $headerdom,}));
372: # - Evaluate actions from previous page (both cumulatively and chronologically)
373: if ($env{'form.catalogmode'} eq 'import') {
374: my $acts=$env{'form.acts'};
375: my @Acts=split(/b/,$acts);
376: my %ahash;
377: my %achash;
378: my $ac=0;
379: # some initial hashes for working with data
380: foreach (@Acts) {
381: my ($state,$ref)=split(/a/);
382: $ahash{$ref}=$state;
383: $achash{$ref}=$ac;
384: $ac++;
385: }
386: # sorting through the actions and changing the global database hash
387: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
388: my $key=$_;
389: if ($ahash{$key} eq '1') {
390: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
391: $hash{'pre_'.$key.'_title'};
392: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
393: $hash{'storectr'}+0;
394: $hash{'storectr'}++;
395: }
396: if ($ahash{$key} eq '0') {
397: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
398: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
399: }
400: }
401: }
402: # deleting the previously cached listing
403: foreach (keys %hash) {
404: if ($_ =~ /^pre_/ && $_ =~/link$/) {
405: my $key = $_;
406: $key =~ s/^pre_//;
407: $key =~ s/_[^_]*$//;
408: delete $hash{'pre_'.$key.'_title'};
409: delete $hash{'pre_'.$key.'_link'};
410: }
411: }
412: }
413:
414: # ---------------------------------- get state of file attributes to be showing
415: if ($env{'form.attrs'}) {
416: for (my $i=0; $i<=11; $i++) {
417: delete $hash{'display_attrs_'.$i};
418: if ($env{'form.attr'.$i} == 1) {
419: $attrchk[$i] = 'checked';
420: $hash{'display_attrs_'.$i} = 1;
421: }
422: }
423: } else {
424: for (my $i=0; $i<=11; $i++) {
425: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
426: }
427: }
428:
429: # ------------------------------- output state of file attributes to be showing
430: # All versions has to the last item
431: # since it does not take an extra col
432: my %lt=&Apache::lonlocal::texthash(
433: 'ti' => 'Title',
434: 'si' => 'Size',
435: 'la' => 'Last access',
436: 'lm' => 'Last modified',
437: 'st' => 'Statistics',
438: 'au' => 'Author',
439: 'kw' => 'Keywords',
440: 'ln' => 'Language',
441: 'sa' => 'Source Available',
442: 'sr' => 'Show resource',
443: 'li' => 'Linked/Related Resources',
444: 'av' => 'All versions',
445: 'ud' => 'Update Display'
446: );
447: $r->print(<<END);
448: <form method="post" name="fileattr" action="$uri"
449: enctype="application/x-www-form-urlencoded">
450: <label><input type="checkbox" name="attr9" value="1" $attrchk[9] onClick="this.form.submit();" /> $lt{'av'}</label>
451: <table border="0">
452: <tr>
453: <td><label><input type="checkbox" name="attr0" value="1" $attrchk[0] onClick="this.form.submit();" /> $lt{'ti'}</label></td>
454: <td><label><input type="checkbox" name="attr4" value="1" $attrchk[4] onClick="this.form.submit();" /> $lt{'au'}</label></td>
455: <td><label><input type="checkbox" name="attr5" value="1" $attrchk[5] onClick="this.form.submit();" /> $lt{'kw'}</label></td>
456: <td><label><input type="checkbox" name="attr6" value="1" $attrchk[6] onClick="this.form.submit();" /> $lt{'ln'}</label></td>
457: </tr>
458: <tr>
459: <td><label><input type="checkbox" name="attr1" value="1" $attrchk[1] onClick="this.form.submit();" /> $lt{'si'}</label></td>
460: <td><label><input type="checkbox" name="attr2" value="1" $attrchk[2] onClick="this.form.submit();" /> $lt{'la'}</label></td>
461: <td><label><input type="checkbox" name="attr3" value="1" $attrchk[3] onClick="this.form.submit();" /> $lt{'lm'}</label></td>
462: <td><label><input type="checkbox" name="attr10" value="1" $attrchk[10] onClick="this.form.submit();" /> $lt{'sa'}</label></td>
463: </tr>
464: <tr>
465: <td><label><input type="checkbox" name="attr8" value="1" $attrchk[8] onClick="this.form.submit();" /> $lt{'st'}</label></td>
466: <td><label><input type="checkbox" name="attr11" value="1" $attrchk[11] onClick="this.form.submit();" /> $lt{'li'}</label></td>
467: <td><label><input type="checkbox" name="attr7" value="1" $attrchk[7] onClick="this.form.submit();" /> $lt{'sr'}</label></td>
468: <td> </td>
469: </tr>
470: </table>
471: <input type="hidden" name="attrs" value="1" />
472: <input type="submit" name="updatedisplay" value="$lt{'ud'}" />
473: <input type="hidden" name="acts" value="" />
474: $closebutton $groupimportbutton
475: END
476: # -------------- Filter out sequence containment in crumbs and "recent folders"
477: my $storeuri=$uri;
478: $storeuri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
479: $storeuri=~s/\/+/\//g;
480: # ---------------------------------------------------------------- Bread crumbs
481: $r->print(&Apache::lonhtmlcommon::crumbs($storeuri,'','',
482: (($env{'form.catalogmode'} eq 'import')?
483: 'document.forms.fileattr':'')).
484: &Apache::lonhtmlcommon::select_recent('residx','resrecent',
485: '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();'));
486: # -------------------------------------------------------- Resource Home Button
487: my $reshome=$env{'course.'.$env{'request.course.id'}.'.reshome'};
488: if ($reshome) {
489: $r->print("<font size='+2'><a href='");
490: if ($env{'form.catalogmode'} eq 'import') {
491: $r->print('javascript:document.forms.fileattr.action="'.$reshome.'";document.forms.fileattr.submit();');
492: } else {
493: $r->print($reshome);
494: }
495: $r->print("'>".&mt('Home').'</a></font>');
496: }
497: $r->print('</form>');
498: # ------------------------------------------------------ Remember where we were
499: &Apache::loncommon::storeresurl($storeuri);
500: &Apache::lonhtmlcommon::store_recent('residx',$storeuri,$storeuri);
501: # ----------------- output starting row to the indexed file/directory hierarchy
502: my $titleclr="#ddffff";
503: #$r->print(&initdebug());
504: #$r->print(&writedebug("Omit:@Omit")) if (@Omit);
505: #$r->print(&writedebug("Only:@Only")) if (@Only);
506: $r->print('<table width="100%" border="0"><tr><td bgcolor="#777777">'."\n");
507: $r->print('<table width="100%" border="0"><tr bgcolor="'.$titleclr.'">'."\n");
508: $r->print("<td $colspan><b>".&mt('Name')."</b></td>\n");
509: $r->print("<td><b>".&mt('Title')."</b></td>\n")
510: if ($hash{'display_attrs_0'} == 1);
511: $r->print("<td align=right><b>".&mt("Size")." (".&mt("bytes").") ".
512: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
513: $r->print("<td><b>".&mt("Last accessed")."</b></td>\n")
514: if ($hash{'display_attrs_2'} == 1);
515: $r->print("<td><b>".&mt("Last modified")."</b></td>\n")
516: if ($hash{'display_attrs_3'} == 1);
517: $r->print("<td><b>".&mt("Author(s)")."</b></td>\n")
518: if ($hash{'display_attrs_4'} == 1);
519: $r->print("<td><b>".&mt("Keywords")."</b></td>\n")
520: if ($hash{'display_attrs_5'} == 1);
521: $r->print("<td><b>".&mt("Language")."</b></td>\n")
522: if ($hash{'display_attrs_6'} == 1);
523: $r->print("<td><b>".&mt("Usage Statistics")." <br />(".
524: &mt("Courses/Network Hits").")</b> ".&mt('updated periodically')."</td>\n")
525: if ($hash{'display_attrs_8'} == 1);
526: $r->print("<td><b>".&mt("Source Available")."</b></td>\n")
527: if ($hash{'display_attrs_10'} == 1);
528: $r->print("<td><b>".&mt("Linked/Related Resources")."</b></td>\n")
529: if ($hash{'display_attrs_11'} == 1);
530: $r->print("<td><b>".&mt("Resource")."</b></td>\n")
531: if ($hash{'display_attrs_7'} == 1);
532: $r->print('</tr>');
533:
534: # ----------------- read in what directories have previously been set to "open"
535: foreach (keys %hash) {
536: if ($_ =~ /^diropen_status_/) {
537: my $key = $_;
538: $key =~ s/^diropen_status_//;
539: $dirs{$key} = $hash{$_};
540: }
541: }
542:
543: if ($env{'form.openuri'}) { # take care of review and refresh options
544: my $uri=$env{'form.openuri'};
545: if (exists($hash{'diropen_status_'.$uri})) {
546: my $cursta = $hash{'diropen_status_'.$uri};
547: $dirs{$uri} = 'open';
548: $hash{'diropen_status_'.$uri} = 'open';
549: if ($cursta eq 'open') {
550: $dirs{$uri} = 'closed';
551: $hash{'diropen_status_'.$uri} = 'closed';
552: }
553: } else {
554: $hash{'diropen_status_'.$uri} = 'open';
555: $dirs{$uri} = 'open';
556: }
557: }
558:
559: my $toplevel;
560: my $indent = 0;
561: $uri = $uri.'/' if $uri !~ /.*\/$/;
562:
563: if ($env{'form.dirPointer'} ne 'on') {
564: $hash{'top.level'} = $uri;
565: $toplevel = $uri;
566: } else {
567: $toplevel = $hash{'top.level'};
568: }
569:
570: # -------------------------------- if not at top level, provide an uplink arrow
571: if ($toplevel ne '/res/'){
572: my (@uri_com) = split(/\//,$uri);
573: pop @uri_com;
574: my $upone = join('/',@uri_com);
575: my @list = qw (0);
576: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
577: $indent = 1;
578: }
579:
580: # -------- recursively go through all the directories and output as appropriate
581: &scanDir ($r,$toplevel,$indent,\%hash);
582:
583: # ---------------------------- embed hidden information useful for group import
584: $r->print("<form name='fnum'>");
585: $r->print("<input type='hidden' name='fnum' value='$fnum' /></form>");
586:
587: # -------------------------------------------------------------- end the tables
588: $r->print('</table>');
589: $r->print('</td></tr></table>');
590:
591: # --------------------------------------------------- end the output and return
592: $r->print(&Apache::loncommon::end_page()."\n");
593: }
594: if(! $c->aborted()) {
595: # write back into the temporary file
596: my %dbfile;
597: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
598: while (my($key,$value) = each(%hash)) {
599: $dbfile{$key}=$value;
600: }
601: untie(%dbfile);
602: }
603: }
604:
605: return OK;
606: }
607:
608: # ----------------------------------------------- recursive scan of a directory
609: sub scanDir {
610: my ($r,$startdir,$indent,$hashref)=@_;
611: my $c = $r->connection();
612: my ($compuri,$curdir);
613: my $dirptr=16384;
614: my $obs;
615: $indent++;
616: my %dupdirs = %dirs;
617: my @list=&get_list($r,$startdir);
618: foreach my $line (@list) {
619: return if ($c->aborted());
620: #This is a kludge, sorry aboot this
621: my ($strip,$dom,undef,$testdir,undef,undef,undef,undef,undef,undef,undef,undef,undef,undef,$obs,undef)=split(/\&/,$line,16);
622: next if($strip =~ /.*\.meta$/ | $obs eq '1');
623: my (@fileparts) = split(/\./,$strip);
624: if ($hash{'display_attrs_9'} != 1) {
625: # if not all versions to be shown
626: if (scalar(@fileparts) >= 3) {
627: my $fext = pop @fileparts;
628: my $ov = pop @fileparts;
629: my $fname = join ('.',@fileparts,$fext);
630: next if (grep /\Q$fname\E/,@list and $ov =~ /^\d+$/);
631: }
632: }
633:
634: if ($dom eq 'domain') {
635: # dom list has full path /res/<domain name>/ already
636: $curdir='';
637: $compuri = (split(/\&/,$line))[0];
638: } else {
639: # user, dir & file have name only, i.e., w/o path
640: $compuri = join('',$startdir,$strip,'/');
641: $curdir = $startdir;
642: }
643: my $diropen = 'closed';
644: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/) or ($compuri=~/\.(sequence|page)\/$/)) {
645: while (my ($key,$val)= each %dupdirs) {
646: if ($key eq $compuri and $val eq "open") {
647: $diropen = "opened";
648: delete($dupdirs{$key});
649: delete($dirs{$key});
650: }
651: }
652: }
653: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
654: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
655: }
656: $indent--;
657: }
658:
659: # --------------- get complete matched list based on the uri (returns an array)
660: sub get_list {
661: my ($r,$uri)=@_;
662: my @list=();
663: (my $luri = $uri) =~ s/\//_/g;
664: if ($env{'form.updatedisplay'}) {
665: foreach (keys %hash) {
666: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
667: delete $hash{$_} if ($_ =~ /^dirlist_timestamp_files_/);
668: }
669: }
670:
671: if (defined($hash{'dirlist_files_'.$luri}) &&
672: $hash{'dirlist_timestamp_files_'.$luri}+600 > (time)) {
673: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
674: } elsif ($uri=~/\.(page|sequence)\/$/) {
675: # is a page or a sequence
676: $uri=~s/\/$//;
677: $uri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
678: $uri=~s/\/+/\//g;
679: foreach (&Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$uri))) {
680: my @ratpart=split(/\:/,$_);
681: push @list,$ratpart[1];
682: }
683: $hash{'dirlist_files_'.$luri} = join("\n",@list);
684: } else {
685: # is really a directory
686: @list = &Apache::lonnet::dirlist($uri);
687: $hash{'dirlist_files_'.$luri} = join("\n",@list);
688: $hash{'dirlist_timestamp_files_'.$luri} = time;
689: }
690: return @list=&match_ext($r,@list);
691: }
692:
693: sub dynmetaread {
694: my $uri=shift;
695: if (($hash{'display_attrs_8'}==1) || ($hash{'display_attrs_11'}==1)) {
696: # We don't want the filename
697: $uri=~s/\/[^\/]+$//;
698: # Did we already see this?
699: my $builddir=$uri;
700: while ($builddir) {
701: if ($dynread{$builddir}) {
702: return 0;
703: }
704: $builddir=~s/\/[^\/]+$//;
705: }
706: # Actually get the data
707: %dynhash=
708: (%dynhash,&Apache::lonmeta::get_dynamic_metadata_from_sql($uri.'/'));
709: # Remember that we got it
710: $dynread{$uri}=1;
711: }
712: }
713:
714: sub initdebug {
715: my $start_page=
716: &Apache::loncommon::start_page('Debug',undef,
717: {'only_body' => 1,});
718: $start_page =~ s/\n/ /g;
719: return <<ENDJS;
720: <script type="text/javascript">
721: var debugging = true;
722: if (debugging) {
723: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
724: }
725:
726: function output(text) {
727: if (debugging) {
728: debuggingWindow.document.writeln(text);
729: }
730: }
731: output('$start_page<pre>');
732: </script>
733: ENDJS
734: }
735:
736: sub writedebug {
737: my ($text) = @_;
738: return "<script type=\"text/javascript\">output('$text');</script>";
739: }
740:
741: # -------------------- filters out files based on extensions (returns an array)
742: sub match_ext {
743: my ($r,@packlist)=@_;
744: my @trimlist;
745: my $nextline;
746: my @fileext;
747: my $dirptr=16384;
748:
749: foreach my $line (@packlist) {
750: chomp $line;
751: $line =~ s/^\/home\/httpd\/html//;
752: my @unpackline = split (/\&/,$line);
753: next if ($unpackline[0] eq '.');
754: next if ($unpackline[0] eq '..');
755: my @filecom = split (/\./,$unpackline[0]);
756: my $fext = pop(@filecom);
757: my $fnptr = ($unpackline[3]&$dirptr) || ($fext=~/\.(page|sequence)$/);
758: if ($fnptr == 0 and $unpackline[3] ne "") {
759: my $embstyle = &Apache::loncommon::fileembstyle($fext);
760: push @trimlist,$line if (defined($embstyle) &&
761: ($embstyle ne 'hdn' or $fext eq 'meta'));
762: } else {
763: push @trimlist,$line;
764: }
765: }
766: @trimlist = sort {uc($a) cmp uc($b)} (@trimlist);
767: return @trimlist;
768: }
769:
770: # ------------------------------- displays one line in appropriate table format
771: sub display_line {
772: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
773: my (@pathfn, $fndir);
774: # there could be relative paths (files actually belonging into this directory)
775: # or absolute paths (for example, from sequences)
776: my $absolute;
777: my $pathprefix;
778: if ($line=~m|^/res/| && $startdir ne '') {
779: $absolute=1;
780: $pathprefix='';
781: } else {
782: $absolute=0;
783: $pathprefix=$startdir;
784: }
785: my $dirptr=16384;
786: my $fileclr="#ffffe6";
787: my $iconpath= $r->dir_config('lonIconsURL') . '/';
788:
789: my @filecom = split (/\&/,$line);
790: my @pathcom = split (/\//,$filecom[0]);
791: my $listname = $pathcom[scalar(@pathcom)-1];
792: my $fnptr = $filecom[3]&$dirptr;
793: my $msg = &mt('View').' '.$filecom[0].' '.&mt('resources');
794: $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
795:
796: my $tabtag='</td>';
797: my $i=0;
798: while ($i<=11) {
799: $tabtag=join('',$tabtag,"<td> </td>")
800: if $hash{'display_attrs_'.$i} == 1;
801: $i++;
802: }
803: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
804:
805: # display uplink arrow
806: if ($filecom[1] eq 'viewOneUp') {
807: my $updir=$startdir;
808: # -------------- Filter out sequence containment in crumbs and "recent folders"
809: $updir='/'.(split(/\.(page|sequence)\/\//,$startdir))[-1];
810: $updir=~s/\/+/\//g;
811:
812: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
813: $r->print("<td>\n");
814: $r->print ('<form method="post" name="dirpathUP" action="'.$updir.
815: '/" '.
816: 'onSubmit="return rep_dirpath(\'UP\','.
817: 'document.forms.fileattr.acts.value)" '.
818: 'enctype="application/x-www-form-urlencoded"'.
819: '>'."\n");
820: $r->print ('<input type=hidden name=openuri value="'.
821: $startdir.'" />'."\n");
822: $r->print ('<input type="hidden" name="acts" value="" />'."\n");
823: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
824: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
825: "\n");
826: $r->print(&mt("Up")."</form>$tabtag</tr>\n");
827: return OK;
828: }
829: # Do we have permission to look at this?
830:
831: if($filecom[15] ne '1') { return OK if (!&Apache::lonnet::allowed('bre',$pathprefix.$filecom[0])); }
832:
833: # make absolute links appear on different background
834: if ($absolute) { $fileclr='#ccdd99'; }
835:
836: # display domain
837: if ($filecom[1] eq 'domain') {
838: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n")
839: if ($env{'form.dirPointer'} eq "on");
840: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
841: $r->print("<td>");
842: &begin_form ($r,$filecom[0]);
843: my $anchor = $filecom[0];
844: $anchor =~ s/\///g;
845: $r->print ('<a name="'.$anchor.'">');
846: $r->print ('<input type="hidden" name="acts" value="" />');
847: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
848: $diropen.'.gif"');
849: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
850: "\n");
851: my $quotable_filecom = &Apache::loncommon::escape_single($filecom[0]);
852: $r->print ('<a href="javascript:gothere(\''.$quotable_filecom.
853: '\')"><img src="'.$iconpath.'server.gif"');
854: $r->print (' border="0" /></a>'."\n");
855: $r->print (&mt("Domain")." - $listname ");
856: if ($Apache::lonnet::domaindescription{$listname}) {
857: $r->print("(".$Apache::lonnet::domaindescription{$listname}.
858: ")");
859: }
860: $r->print ("</form>$tabtag</tr>\n");
861: return OK;
862:
863: # display user directory
864: }
865: if ($filecom[1] eq 'user') {
866: $r->print("<tr valign=$valign bgcolor=$fileclr>$extrafield");
867: $r->print("<td nowrap>\n");
868: my $curdir = $startdir.$filecom[0].'/';
869: my $anchor = $curdir;
870: $anchor =~ s/\///g;
871: &begin_form ($r,$curdir);
872: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
873: 'whitespace1.gif" border="0" />'."\n");
874: $r->print ('<input type="hidden" name="acts" value="" />');
875: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
876: '.gif"');
877: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
878: "\n");
879: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
880: $r->print ('<a href="javascript:gothere(\''.$quotable_curdir
881: .'\')"><img src='.
882: $iconpath.'quill.gif border="0" name="'.$msg.
883: '" height="22" /></a>');
884: my $domain=(split(m|/|,$startdir))[2];
885: my $plainname=&Apache::loncommon::plainname($listname,$domain);
886: $r->print ($listname);
887: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
888: $r->print ('</form>'.$tabtag.'</tr>'."\n");
889: return OK;
890: }
891:
892: # display file
893: if (($fnptr == 0 and $filecom[3] ne '') or $absolute) {
894: my $filelink = $pathprefix.$filecom[0];
895: my @file_ext = split (/\./,$listname);
896: my $curfext = $file_ext[-1];
897: if (@Omit) {
898: foreach (@Omit) { return OK if ($curfext eq $_); }
899: }
900: if (@Only) {
901: my $skip = 1;
902: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
903: return OK if ($skip > 0);
904: }
905: # Set the icon for the file
906: my $iconname = &Apache::loncommon::icon($listname);
907: $r->print("<tr valign='$valign' bgcolor=$fileclr><td nowrap='nowrap' valign='top'>");
908:
909: if ($env{'form.catalogmode'} eq 'interactive') {
910: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
911: $r->print("<a href=\"javascript:select_data(\'",
912: $quotable_filelink,"')\">");
913: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
914: "\n");
915: $r->print("</td><td nowrap>");
916: } elsif ($env{'form.catalogmode'} eq 'import') {
917: $r->print("<form name='form$fnum'>\n");
918: $r->print("<input type='checkbox' name='filelink"."' ".
919: "value='$filelink' onClick='".
920: "javascript:queue(\"form$fnum\")' ");
921: if ($hash{'store_'.$filelink}) {
922: $r->print("checked");
923: }
924: $r->print(" />\n");
925: $r->print("</form></td><td nowrap>");
926: $hash{"pre_${fnum}_link"}=$filelink;
927: $fnum++;
928: }
929: # Form to open or close sequences
930: if ($filelink=~/\.(page|sequence)$/) {
931: my $curdir = $startdir.$filecom[0].'/';
932: my $anchor = $curdir;
933: $anchor =~ s/\///g;
934: &begin_form($r,$curdir);
935: $indent--;
936: }
937: # General indentation
938: if ($indent > 0 and $indent < 11) {
939: $r->print("<img src=",$iconpath,"whitespace",$indent,
940: ".gif border='0' />\n");
941: } elsif ($indent >0) {
942: my $ten = int($indent/10.);
943: my $rem = $indent%10.0;
944: my $count = 0;
945: while ($count < $ten) {
946: $r->print("<img src=",$iconpath,
947: "whitespace10.gif border='0' />\n");
948: $count++;
949: }
950: $r->print("<img src=",$iconpath,"whitespace",$rem,
951: ".gif border='0' />\n") if $rem > 0;
952: }
953: # Sequence open/close icon
954: if ($filelink=~/\.(page|sequence)$/) {
955: my $curdir = $startdir.$filecom[0].'/';
956: my $anchor = $curdir;
957: $anchor =~ s/\///g;
958: $r->print ('<input type="hidden" name="acts" value="" />');
959: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
960: 'folder_pointer_'.$diropen.'.gif"');
961: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
962: "\n");
963: }
964: # Filetype icons
965: $r->print("<img src='$iconname' border='0' />\n");
966: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
967:
968:
969: $r->print (" <a href=\"javascript:openWindow('".$quotable_filelink.
970: "', 'previewfile', '450', '500', 'no', 'yes','yes')\";".
971: " TARGET=_self>$listname</a> ");
972:
973: $r->print (" (<a href=\"javascript:openWindow('".$quotable_filelink.
974: ".meta', 'metadatafile', '500', '550', 'no', 'yes','no')\"; ".
975: "TARGET=_self>metadata</a>) ");
976: # Close form to open/close sequence
977: if ($filelink=~/\.(page|sequence)$/) {
978: $r->print('</form>');
979: }
980: $r->print("</td>\n");
981: if ($hash{'display_attrs_0'} == 1) {
982: my $title = &Apache::lonnet::gettitle($filelink,'title');
983: $r->print('<td> '.($title eq '' ? ' ' : $title).
984: ' </td>'."\n");
985: }
986: $r->print('<td align=right> ',
987: $filecom[8]," </td>\n")
988: if $hash{'display_attrs_1'} == 1;
989: $r->print('<td> '.
990: (localtime($filecom[9]))." </td>\n")
991: if $hash{'display_attrs_2'} == 1;
992: $r->print('<td> '.
993: (localtime($filecom[10]))." </td>\n")
994: if $hash{'display_attrs_3'} == 1;
995:
996: if ($hash{'display_attrs_4'} == 1) {
997: my $author = &Apache::lonnet::metadata($filelink,'author');
998: $r->print('<td> '.($author eq '' ? ' ' : $author).
999: " </td>\n");
1000: }
1001: if ($hash{'display_attrs_5'} == 1) {
1002: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1003: # $keywords = ' ' if (!$keywords);
1004: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1005: " </td>\n");
1006: }
1007: #'
1008:
1009: if ($hash{'display_attrs_6'} == 1) {
1010: my $lang = &Apache::lonnet::metadata($filelink,'language');
1011: $lang = &Apache::loncommon::languagedescription($lang);
1012: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1013: " </td>\n");
1014: }
1015: if ($hash{'display_attrs_8'} == 1) {
1016: # statistics
1017: &dynmetaread($filelink);
1018: $r->print("<td>");
1019: &dynmetaprint($r,$filelink,'count');
1020: &dynmetaprint($r,$filelink,'course');
1021: &dynmetaprint($r,$filelink,'stdno');
1022: &dynmetaprint($r,$filelink,'avetries');
1023: &dynmetaprint($r,$filelink,'difficulty');
1024: &dynmetaprint($r,$filelink,'disc');
1025: &dynmetaprint($r,$filelink,'clear');
1026: &dynmetaprint($r,$filelink,'technical');
1027: &dynmetaprint($r,$filelink,'correct');
1028: &dynmetaprint($r,$filelink,'helpful');
1029: &dynmetaprint($r,$filelink,'depth');
1030: $r->print(" </td>\n");
1031:
1032: }
1033: if ($hash{'display_attrs_10'} == 1) {
1034: my $source = &Apache::lonnet::metadata($filelink,'sourceavail');
1035: if($source eq 'open') {
1036: my $sourcelink = &Apache::lonsource::make_link($filelink,$listname);
1037: my $quotable_sourcelink = &Apache::loncommon::escape_single($sourcelink);
1038: $r->print('<td>'."<a href=\"javascript:openWindow('"
1039: .$quotable_sourcelink.
1040: "', 'previewsource', '700', '700', 'no', 'yes','yes')\";".
1041: " TARGET=_self>Yes</a> "."</td>\n");
1042: } else { #A cuddled else. :P
1043: $r->print("<td> </td>\n");
1044: }
1045: }
1046: if ($hash{'display_attrs_11'} == 1) {
1047: # links
1048: &dynmetaread($filelink);
1049: $r->print('<td>');
1050: &coursecontext($r,$filelink);
1051: &dynmetaprint($r,$filelink,'goto_list');
1052: &dynmetaprint($r,$filelink,'comefrom_list');
1053: &dynmetaprint($r,$filelink,'sequsage_list');
1054: &dynmetaprint($r,$filelink,'dependencies');
1055: &dynmetaprint($r,$filelink,'course_list');
1056: $r->print('</td>');
1057: }
1058: if ($hash{'display_attrs_7'} == 1) {
1059: # Show resource
1060: my $output=&showpreview($filelink);
1061: $r->print('<td> '.($output eq '' ? ' ':$output).
1062: " </td>\n");
1063: }
1064: $r->print("</tr>\n");
1065: }
1066:
1067: # -- display directory
1068: if ($fnptr == $dirptr) {
1069: my $curdir = $startdir.$filecom[0].'/';
1070: my $anchor = $curdir;
1071: $anchor =~ s/\///g;
1072: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=$valign>");
1073: &begin_form ($r,$curdir);
1074: my $indentm1 = $indent-1;
1075: if ($indentm1 < 11 and $indentm1 > 0) {
1076: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
1077: ".gif border='0' />\n");
1078: } else {
1079: my $ten = int($indentm1/10.);
1080: my $rem = $indentm1%10.0;
1081: my $count = 0;
1082: while ($count < $ten) {
1083: $r->print ("<img src=",$iconpath
1084: ,"whitespace10.gif border='0' />\n");
1085: $count++;
1086: }
1087: $r->print ("<img src=",$iconpath,"whitespace",$rem,
1088: ".gif border='0' />\n") if $rem > 0;
1089: }
1090: $r->print ('<input type="hidden" name="acts" value="" />');
1091: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
1092: 'folder_pointer_'.$diropen.'.gif"');
1093: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
1094: "\n");
1095: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
1096: $r->print ('<a href="javascript:gothere(\''
1097: .$quotable_curdir.'\')"><img src="'.
1098: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
1099: "\n");
1100: $r->print ("$listname</td>\n");
1101: # Attributes
1102: my $filelink = $startdir.$filecom[0].'/default';
1103:
1104: if ($hash{'display_attrs_0'} == 1) {
1105: my $title = &Apache::lonnet::gettitle($filelink,'title');
1106: $r->print('<td> '.($title eq '' ? ' ' : $title).
1107: ' </td>'."\n");
1108: }
1109: $r->print('<td align=right> ',
1110: $filecom[8]," </td>\n")
1111: if $hash{'display_attrs_1'} == 1;
1112: $r->print('<td> '.
1113: (localtime($filecom[9]))." </td>\n")
1114: if $hash{'display_attrs_2'} == 1;
1115: $r->print('<td> '.
1116: (localtime($filecom[10]))." </td>\n")
1117: if $hash{'display_attrs_3'} == 1;
1118:
1119: if ($hash{'display_attrs_4'} == 1) {
1120: my $author = &Apache::lonnet::metadata($filelink,'author');
1121: $r->print('<td> '.($author eq '' ? ' ' : $author).
1122: " </td>\n");
1123: }
1124: if ($hash{'display_attrs_5'} == 1) {
1125: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1126: # $keywords = ' ' if (!$keywords);
1127: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1128: " </td>\n");
1129: }
1130: if ($hash{'display_attrs_6'} == 1) {
1131: my $lang = &Apache::lonnet::metadata($filelink,'language');
1132: $lang = &Apache::loncommon::languagedescription($lang);
1133: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1134: " </td>\n");
1135: }
1136: if ($hash{'display_attrs_8'} == 1) {
1137: $r->print('<td> </td>');
1138: }
1139: if ($hash{'display_attrs_10'} == 1) {
1140: $r->print('<td> </td>');
1141: }
1142: if ($hash{'display_attrs_11'} == 1) {
1143: $r->print('<td> </td>');
1144: }
1145: if ($hash{'display_attrs_7'} == 1) {
1146: $r->print('<td> </td>');
1147: }
1148: $r->print('</form></tr>');
1149: }
1150:
1151: }
1152:
1153: sub coursecontext {
1154: my ($r,$filelink)=@_;
1155: my $filesymb=&Apache::lonnet::symbread($filelink);
1156: if ($filesymb) {
1157: my ($map,$index,$resource)=&Apache::lonnet::decode_symb($filesymb);
1158: $r->print(&mt('Already in this course:<br />[_1] in folder/map [_2].<br />',
1159: &Apache::lonnet::gettitle($resource),
1160: &Apache::lonnet::gettitle($map)));
1161: }
1162: }
1163:
1164: sub showpreview {
1165: my ($filelink)=@_;
1166: if ($filelink=~m-^(/ext/|http://)-) {
1167: return &mt('External Resource, preview not enabled');
1168: }
1169: my ($curfext)=($filelink=~/\.(\w+)$/);
1170: my $output='';
1171: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
1172: if ($embstyle eq 'ssi') {
1173: my $cache=$Apache::lonnet::perlvar{'lonDocRoot'}.$filelink.
1174: '.tmp';
1175: if ((!$env{'form.updatedisplay'}) &&
1176: (-e $cache)) {
1177: open(FH,$cache);
1178: $output=join("\n",<FH>);
1179: close(FH);
1180: } else {
1181: # In update display mode, remove old cache. This is done to retroactively
1182: # clean up course context renderings.
1183: if (-e $cache) {
1184: unlink($cache);
1185: }
1186: $output=&Apache::lonnet::ssi_body($filelink);
1187: # Is access denied? Don't render, don't store
1188: if ($output=~/LONCAPAACCESSCONTROLERRORSCREEN/s) {
1189: $output='';
1190: # Was this rendered in course content? Don't store
1191: } elsif (!&Apache::lonnet::symbread($filelink)) {
1192: open(FH,">$cache");
1193: print FH $output;
1194: close(FH);
1195: }
1196: }
1197: $output='<font size="-2">'.$output.'</font>';
1198: } elsif ($embstyle eq 'img') {
1199: $output='<img src="'.$filelink.'" />';
1200: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
1201: $output='<img src="http://'.
1202: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
1203: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
1204: }
1205: return $output;
1206: }
1207:
1208: sub dynmetaprint {
1209: my ($r,$filelink,$item)=@_;
1210: if ($dynhash{$filelink}->{$item}) {
1211: $r->print("\n<br />".$fieldnames{$item}.': '.
1212: &Apache::lonmeta::prettyprint($item,
1213: $dynhash{$filelink}->{$item},
1214: (($env{'form.catalogmode'} ne 'import')?'preview':''),
1215: '',
1216: (($env{'form.catalogmode'} eq 'import')?'document.forms.fileattr':''),1));
1217: }
1218: }
1219:
1220: # ------------------- prints the beginning of a form for directory or file link
1221: sub begin_form {
1222: my ($r,$uri) = @_;
1223: my $anchor = $uri;
1224: $anchor =~ s/\///g;
1225: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
1226: '#'.$anchor.
1227: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
1228: ',document.forms.fileattr.acts.value)" '.
1229: 'enctype="application/x-www-form-urlencoded">'."\n");
1230: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'" />'.
1231: "\n");
1232: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n");
1233: $dnum++;
1234: }
1235:
1236: # --------- settings whenever the user causes the indexer window to be launched
1237: sub start_fresh_session {
1238: my ($hash) = @_;
1239: delete $hash->{'form.catalogmode'};
1240: delete $hash->{'form.mode'};
1241: delete $hash->{'form.form'};
1242: delete $hash->{'form.element'};
1243: delete $hash->{'form.omit'};
1244: delete $hash->{'form.only'};
1245: foreach (keys %{$hash}) {
1246: delete $hash->{$_} if (/^(pre_|store)/);
1247: }
1248: }
1249:
1250: # ------------------------------------------------------------------- setvalues
1251: sub setvalues {
1252: # setvalues is used in registerurl to synchronize the database
1253: # hash and environment hashes
1254: my ($H1,$h1key,$H2,$h2key) =@_;
1255: #
1256: if (exists $H2->{$h2key}) {
1257: $H1->{$h1key} = $H2->{$h2key};
1258: } elsif (exists $H1->{$h1key}) {
1259: $H2->{$h2key} = $H1->{$h1key};
1260: }
1261: }
1262:
1263: 1;
1264:
1265: sub cleanup {
1266: if (tied(%hash)){
1267: &Apache::lonnet::logthis('Cleanup indexer: hash');
1268: }
1269: return OK;
1270: }
1271:
1272:
1273:
1274:
1275:
1276: =head1 NAME
1277:
1278: Apache::lonindexer - mod_perl module for cross server filesystem browsing
1279:
1280: =head1 SYNOPSIS
1281:
1282: Invoked by /etc/httpd/conf/srm.conf:
1283:
1284: <LocationMatch "^/res.*/$">
1285: SetHandler perl-script
1286: PerlHandler Apache::lonindexer
1287: </LocationMatch>
1288:
1289: =head1 INTRODUCTION
1290:
1291: This module enables a scheme of browsing across a cross server.
1292:
1293: This is part of the LearningOnline Network with CAPA project
1294: described at http://www.lon-capa.org.
1295:
1296: =head1 BEGIN SUBROUTINE
1297:
1298: This routine is only run once after compilation.
1299:
1300: =over 4
1301:
1302: =item *
1303:
1304: Initializes %language hash table.
1305:
1306: =back
1307:
1308: =head1 HANDLER SUBROUTINE
1309:
1310: This routine is called by Apache and mod_perl.
1311:
1312: =over 4
1313:
1314: =item *
1315:
1316: read in machine configuration variables
1317:
1318: =item *
1319:
1320: see if called from an interactive mode
1321:
1322: =item *
1323:
1324: refresh environment with user database values (in %hash)
1325:
1326: =item *
1327:
1328: define extra fields and buttons in case of special mode
1329:
1330: =item *
1331:
1332: set catalogmodefunctions to have extra needed javascript functionality
1333:
1334: =item *
1335:
1336: print header
1337:
1338: =item *
1339:
1340: evaluate actions from previous page (both cumulatively and chronologically)
1341:
1342: =item *
1343:
1344: output title
1345:
1346: =item *
1347:
1348: get state of file attributes to be showing
1349:
1350: =item *
1351:
1352: output state of file attributes to be showing
1353:
1354: =item *
1355:
1356: output starting row to the indexed file/directory hierarchy
1357:
1358: =item *
1359:
1360: read in what directories have previously been set to "open"
1361:
1362: =item *
1363:
1364: if not at top level, provide an uplink arrow
1365:
1366: =item *
1367:
1368: recursively go through all the directories and output as appropriate
1369:
1370: =item *
1371:
1372: information useful for group import
1373:
1374: =item *
1375:
1376: end the tables
1377:
1378: =item *
1379:
1380: end the output and return
1381:
1382: =back
1383:
1384: =head1 OTHER SUBROUTINES
1385:
1386: =over 4
1387:
1388: =item *
1389:
1390: scanDir - recursive scan of a directory
1391:
1392: =item *
1393:
1394: get_list - get complete matched list based on the uri (returns an array)
1395:
1396: =item *
1397:
1398: match_ext - filters out files based on extensions (returns an array)
1399:
1400: =item *
1401:
1402: display_line - displays one line in appropriate table format
1403:
1404: =item *
1405:
1406: begin_form - prints the beginning of a form for directory or file link
1407:
1408: =item *
1409:
1410: start_fresh_session - settings whenever the user causes the indexer window
1411: to be launched
1412:
1413: =back
1414:
1415: =cut
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