1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.148 2006/06/23 07:32:02 www Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
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_READER(),0640)) {
127: while(my($key,$value)=each(%dbfile)) {
128: $hash{$key}=$value;
129: }
130: untie(%dbfile);
131: }
132: }
133: {
134: if ($env{'form.launch'} eq '1') {
135: &start_fresh_session();
136: }
137: #Hijack lonindexer to verify a title and be close down.
138: if ($env{'form.launch'} eq '2') {
139: &Apache::loncommon::content_type($r,'text/html');
140: my $extra='';
141: if (defined($env{'form.titleelement'}) &&
142: $env{'form.titleelement'} ne '') {
143: my $verify_title = &Apache::lonnet::gettitle($env{'form.acts'});
144: # &Apache::lonnet::logthis("Hrrm $env{'form.acts'} -- $verify_title");
145: $verify_title=~s/'/\\'/g;
146: $extra='window.opener.document.forms["'.$env{'form.form'}.'"].elements["'.$env{'form.titleelement'}.'"].value=\''.$verify_title.'\';';
147: }
148: my $js = <<ENDSUBM;
149: <script type="text/javascript">
150: function load() {
151: window.opener.document.forms["$env{'form.form'}"]
152: .elements["$env{'form.element'}"]
153: .value='$env{'form.acts'}';
154: $extra
155: window.close();
156: }
157: </script>
158: ENDSUBM
159: $r->print(&Apache::loncommon::start_page(undef,$js,
160: {'only_body' =>1,
161: 'add_entries' =>
162: {'onload' => "load();"},}
163: ).
164: &Apache::loncommon::end_page());
165: return OK;
166: }
167:
168: # -------------------- refresh environment with user database values (in %hash)
169: &setvalues(\%hash,'form.catalogmode',\%env,'form.catalogmode' );
170:
171: # --------------------- define extra fields and buttons in case of special mode
172: if ($env{'form.catalogmode'} eq 'interactive') {
173: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
174: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
175: ' border="0" /></td>';
176: $colspan=" colspan='2' ";
177: my $cl=&mt('Close');
178: $closebutton=<<END;
179: <input type="button" name="close" value='$cl' onClick="self.close()" />
180: END
181: }
182: elsif ($env{'form.catalogmode'} eq 'import') {
183: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
184: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
185: ' border="0" /></td>';
186: $colspan=" colspan='2' ";
187: my $cl=&mt('Close');
188: my $gi=&mt('Import');
189: $closebutton=<<END;
190: <input type="button" name="close" value='$cl' onClick="self.close()" />
191: END
192: $groupimportbutton=<<END;
193: <input type="button" name="groupimport" value='$gi'
194: onClick="javascript:select_group()" />
195: END
196: }
197: # Additions made by Matthew to make the browser a little easier to deal
198: # with in the future.
199: #
200: # $mode (at this time) indicates if we are in edit mode.
201: # $form is the name of the form that the URL is placed when the
202: # selection is made.
203: # $element is the name of the element in $formname which receives
204: # the URL.
205: #&Apache::lonxml::debug('Checking mode, form, element');
206: &setvalues(\%hash,'form.mode' ,\%env,'form.mode' );
207: &setvalues(\%hash,'form.form' ,\%env,'form.form' );
208: &setvalues(\%hash,'form.element' ,\%env,'form.element');
209: &setvalues(\%hash,'form.titleelement',\%env,'form.titleelement');
210: &setvalues(\%hash,'form.only' ,\%env,'form.only' );
211: &setvalues(\%hash,'form.omit' ,\%env,'form.omit' );
212:
213: # Deal with 'omit' and 'only'
214: if (exists $env{'form.omit'}) {
215: @Omit = split(',',$env{'form.omit'});
216: }
217: if (exists $env{'form.only'}) {
218: @Only = split(',',$env{'form.only'});
219: }
220:
221: my $mode = $env{'form.mode'};
222: my ($form,$element,$titleelement);
223: if ($mode eq 'edit' || $mode eq 'parmset') {
224: $form = $env{'form.form'};
225: $element = $env{'form.element'};
226: $titleelement = $env{'form.titleelement'};
227: }
228: #&Apache::lonxml::debug("mode=$mode form=$form element=$element titleelement=$titleelement");
229: # ------ set catalogmodefunctions to have extra needed javascript functionality
230: my $catalogmodefunctions='';
231: if ($env{'form.catalogmode'} eq 'interactive' or
232: $env{'form.catalogmode'} eq 'import') {
233: # The if statement below sets us up to use the old version
234: # by default (ie. if $mode is undefined). This is the easy
235: # way out. Hopefully in the future I'll find a way to get
236: # the calls dealt with in a more comprehensive manner.
237:
238: #
239: # There is now also mode "simple", which is for the simple version of the rat
240: #
241: #
242: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
243: my $location = "/adm/groupsort?catalogmode=import&";
244: $location .= "mode=".$mode."&";
245: $location .= "acts=";
246: $catalogmodefunctions=<<"END";
247: function select_data(url) {
248: changeURL(url);
249: self.close();
250: }
251: function select_group() {
252: window.location="$location"+document.forms.fileattr.acts.value;
253: }
254: function changeURL(val) {
255: if (opener.inf) {
256: if (opener.inf.document.forms.resinfo.elements.u) {
257: opener.inf.document.forms.resinfo.elements.u.value=val;
258: }
259: }
260: }
261: END
262: } elsif ($mode eq 'edit') { # we are in 'edit' mode
263: my $location = "/adm/groupsort?catalogmode=interactive&";
264: $location .= "form=$form&element=$element&mode=edit&acts=";
265: $catalogmodefunctions=<<END;
266: // mode = $mode
267: function select_data(url) {
268: var location = "/res/?launch=2&form=$form&element=$element&titleelement=$titleelement&acts=" + url;
269: window.location=location;
270: }
271: function select_group() {
272: window.location="$location"+document.forms.fileattr.acts.value;
273: }
274:
275: function changeURL(val) {
276: if (window.opener.document) {
277: window.opener.document.forms["$form"].elements["$element"].value=val;
278: } else {
279: alert("The file you selected is: "+val);
280: }
281: }
282: END
283: if (!$titleelement) {
284: $catalogmodefunctions.='function changeTitle(val) {}';
285: } else {
286: $catalogmodefunctions.=<<END;
287: function changeTitle(val) {
288: if (window.opener.document) {
289: window.opener.document.forms["$form"].elements["$titleelement"].value=val;
290: } else {
291: alert("The title of the file you selected is: "+val);
292: }
293: }
294: END
295: }
296: } elsif ($mode eq 'parmset') {
297: my $location = "/adm/groupsort?catalogmode=interactive&";
298: $location .= "form=$form&element=$element&mode=parmset&acts=";
299: $catalogmodefunctions=<<END;
300: // mode = $mode
301: function select_data(url) {
302: changeURL(url);
303: self.close();
304: }
305:
306: function select_group() {
307: window.location="$location"+document.forms.fileattr.acts.value;
308: }
309:
310: function changeURL(val) {
311: if (window.opener.document) {
312: var elementname = "$element"+"_value";
313: var checkboxname = "$element"+"_setparmval";
314: window.opener.document.forms["$form"].elements[elementname].value=val;
315: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
316: } else {
317: alert("The file you selected is: "+val);
318: }
319: }
320:
321: END
322: }
323: }
324: $catalogmodefunctions.=<<END;
325: var acts='';
326: function rep_dirpath(suffix,val) {
327: eval("document.forms.dirpath"+suffix+".acts.value=val");
328: }
329: END
330: if ($env{'form.catalogmode'} eq 'import') {
331: $catalogmodefunctions.=<<END;
332: function queue(val) {
333: if (eval("document.forms."+val+".filelink.checked")) {
334: var l=val.length;
335: var v=val.substring(4,l);
336: document.forms.fileattr.acts.value+='1a'+v+'b';
337: }
338: else {
339: var l=val.length;
340: var v=val.substring(4,l);
341: document.forms.fileattr.acts.value+='0a'+v+'b';
342: }
343: }
344: END
345: }
346:
347: # ---------------------------------------------------------------- Print Header
348: my $js = <<"ENDHEADER";
349: <script type="text/javascript">
350: $catalogmodefunctions
351: function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
352: var xpos = (screen.width-w)/2;
353: xpos = (xpos < 0) ? '0' : xpos;
354: var ypos = (screen.height-h)/2-30;
355: ypos = (ypos < 0) ? '0' : ypos;
356: var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
357: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
358: options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
359: var newWin = window.open(url, wdwName, options);
360: newWin.focus();
361: }
362: function gothere(val) {
363: window.location=val+'?acts='+document.forms.fileattr.acts.value;
364: }
365: </script>
366: ENDHEADER
367:
368: my ($headerdom)=($uri=~/^\/res\/(\w+)\//);
369: $r->print(&Apache::loncommon::start_page('Browse Resources',$js,
370: {'domain' => $headerdom,}));
371: # - Evaluate actions from previous page (both cumulatively and chronologically)
372: if ($env{'form.catalogmode'} eq 'import') {
373: my $acts=$env{'form.acts'};
374: my @Acts=split(/b/,$acts);
375: my %ahash;
376: my %achash;
377: my $ac=0;
378: # some initial hashes for working with data
379: foreach (@Acts) {
380: my ($state,$ref)=split(/a/);
381: $ahash{$ref}=$state;
382: $achash{$ref}=$ac;
383: $ac++;
384: }
385: # sorting through the actions and changing the global database hash
386: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
387: my $key=$_;
388: if ($ahash{$key} eq '1') {
389: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
390: $hash{'pre_'.$key.'_title'};
391: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
392: $hash{'storectr'}+0;
393: $hash{'storectr'}++;
394: }
395: if ($ahash{$key} eq '0') {
396: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
397: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
398: }
399: }
400: }
401: # deleting the previously cached listing
402: foreach (keys %hash) {
403: if ($_ =~ /^pre_/ && $_ =~/link$/) {
404: my $key = $_;
405: $key =~ s/^pre_//;
406: $key =~ s/_[^_]*$//;
407: delete $hash{'pre_'.$key.'_title'};
408: delete $hash{'pre_'.$key.'_link'};
409: }
410: }
411: }
412:
413: # ---------------------------------- get state of file attributes to be showing
414: if ($env{'form.attrs'}) {
415: for (my $i=0; $i<=11; $i++) {
416: delete $hash{'display_attrs_'.$i};
417: if ($env{'form.attr'.$i} == 1) {
418: $attrchk[$i] = 'checked';
419: $hash{'display_attrs_'.$i} = 1;
420: }
421: }
422: } else {
423: for (my $i=0; $i<=11; $i++) {
424: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
425: }
426: }
427:
428: # ------------------------------- output state of file attributes to be showing
429: # All versions has to the last item
430: # since it does not take an extra col
431: my %lt=&Apache::lonlocal::texthash(
432: 'ti' => 'Title',
433: 'si' => 'Size',
434: 'la' => 'Last access',
435: 'lm' => 'Last modified',
436: 'st' => 'Statistics',
437: 'au' => 'Author',
438: 'kw' => 'Keywords',
439: 'ln' => 'Language',
440: 'sa' => 'Source Available',
441: 'sr' => 'Show resource',
442: 'li' => 'Linked/Related Resources',
443: 'av' => 'All versions',
444: 'ud' => 'Update Display'
445: );
446: $r->print(<<END);
447: <form method="post" name="fileattr" action="$uri"
448: enctype="application/x-www-form-urlencoded">
449: <label><input type="checkbox" name="attr9" value="1" $attrchk[9] onClick="this.form.submit();" /> $lt{'av'}</label>
450: <table border="0">
451: <tr>
452: <td><label><input type="checkbox" name="attr0" value="1" $attrchk[0] onClick="this.form.submit();" /> $lt{'ti'}</label></td>
453: <td><label><input type="checkbox" name="attr4" value="1" $attrchk[4] onClick="this.form.submit();" /> $lt{'au'}</label></td>
454: <td><label><input type="checkbox" name="attr5" value="1" $attrchk[5] onClick="this.form.submit();" /> $lt{'kw'}</label></td>
455: <td><label><input type="checkbox" name="attr6" value="1" $attrchk[6] onClick="this.form.submit();" /> $lt{'ln'}</label></td>
456: </tr>
457: <tr>
458: <td><label><input type="checkbox" name="attr1" value="1" $attrchk[1] onClick="this.form.submit();" /> $lt{'si'}</label></td>
459: <td><label><input type="checkbox" name="attr2" value="1" $attrchk[2] onClick="this.form.submit();" /> $lt{'la'}</label></td>
460: <td><label><input type="checkbox" name="attr3" value="1" $attrchk[3] onClick="this.form.submit();" /> $lt{'lm'}</label></td>
461: <td><label><input type="checkbox" name="attr10" value="1" $attrchk[10] onClick="this.form.submit();" /> $lt{'sa'}</label></td>
462: </tr>
463: <tr>
464: <td><label><input type="checkbox" name="attr8" value="1" $attrchk[8] onClick="this.form.submit();" /> $lt{'st'}</label></td>
465: <td><label><input type="checkbox" name="attr11" value="1" $attrchk[11] onClick="this.form.submit();" /> $lt{'li'}</label></td>
466: <td><label><input type="checkbox" name="attr7" value="1" $attrchk[7] onClick="this.form.submit();" /> $lt{'sr'}</label></td>
467: <td> </td>
468: </tr>
469: </table>
470: <input type="hidden" name="attrs" value="1" />
471: <input type="submit" name="updatedisplay" value="$lt{'ud'}" />
472: <input type="hidden" name="acts" value="" />
473: $closebutton $groupimportbutton
474: END
475: # -------------- Filter out sequence containment in crumbs and "recent folders"
476: my $storeuri=$uri;
477: $storeuri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
478: $storeuri=~s/\/+/\//g;
479: # ---------------------------------------------------------------- Bread crumbs
480: $r->print(&Apache::lonhtmlcommon::crumbs($storeuri,'','',
481: (($env{'form.catalogmode'} eq 'import')?
482: 'document.forms.fileattr':'')).
483: &Apache::lonhtmlcommon::select_recent('residx','resrecent',
484: '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();'));
485: # -------------------------------------------------------- Resource Home Button
486: my $reshome=$env{'course.'.$env{'request.course.id'}.'.reshome'};
487: if ($reshome) {
488: $r->print("<font size='+2'><a href='");
489: if ($env{'form.catalogmode'} eq 'import') {
490: $r->print('javascript:document.forms.fileattr.action="'.$reshome.'";document.forms.fileattr.submit();');
491: } else {
492: $r->print($reshome);
493: }
494: $r->print("'>".&mt('Home').'</a></font>');
495: }
496: $r->print('</form>');
497: # ------------------------------------------------------ Remember where we were
498: &Apache::loncommon::storeresurl($storeuri);
499: &Apache::lonhtmlcommon::store_recent('residx',$storeuri,$storeuri);
500: # ----------------- output starting row to the indexed file/directory hierarchy
501: my $titleclr="#ddffff";
502: #$r->print(&initdebug());
503: #$r->print(&writedebug("Omit:@Omit")) if (@Omit);
504: #$r->print(&writedebug("Only:@Only")) if (@Only);
505: $r->print('<table width="100%" border="0"><tr><td bgcolor="#777777">'."\n");
506: $r->print('<table width="100%" border="0"><tr bgcolor="'.$titleclr.'">'."\n");
507: $r->print("<td $colspan><b>".&mt('Name')."</b></td>\n");
508: $r->print("<td><b>".&mt('Title')."</b></td>\n")
509: if ($hash{'display_attrs_0'} == 1);
510: $r->print("<td align=right><b>".&mt("Size")." (".&mt("bytes").") ".
511: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
512: $r->print("<td><b>".&mt("Last accessed")."</b></td>\n")
513: if ($hash{'display_attrs_2'} == 1);
514: $r->print("<td><b>".&mt("Last modified")."</b></td>\n")
515: if ($hash{'display_attrs_3'} == 1);
516: $r->print("<td><b>".&mt("Author(s)")."</b></td>\n")
517: if ($hash{'display_attrs_4'} == 1);
518: $r->print("<td><b>".&mt("Keywords")."</b></td>\n")
519: if ($hash{'display_attrs_5'} == 1);
520: $r->print("<td><b>".&mt("Language")."</b></td>\n")
521: if ($hash{'display_attrs_6'} == 1);
522: $r->print("<td><b>".&mt("Usage Statistics")." <br />(".
523: &mt("Courses/Network Hits").")</b> ".&mt('updated periodically')."</td>\n")
524: if ($hash{'display_attrs_8'} == 1);
525: $r->print("<td><b>".&mt("Source Available")."</b></td>\n")
526: if ($hash{'display_attrs_10'} == 1);
527: $r->print("<td><b>".&mt("Linked/Related Resources")."</b></td>\n")
528: if ($hash{'display_attrs_11'} == 1);
529: $r->print("<td><b>".&mt("Resource")."</b></td>\n")
530: if ($hash{'display_attrs_7'} == 1);
531: $r->print('</tr>');
532:
533: # ----------------- read in what directories have previously been set to "open"
534: foreach (keys %hash) {
535: if ($_ =~ /^diropen_status_/) {
536: my $key = $_;
537: $key =~ s/^diropen_status_//;
538: $dirs{$key} = $hash{$_};
539: }
540: }
541:
542: if ($env{'form.openuri'}) { # take care of review and refresh options
543: my $uri=$env{'form.openuri'};
544: if (exists($hash{'diropen_status_'.$uri})) {
545: my $cursta = $hash{'diropen_status_'.$uri};
546: $dirs{$uri} = 'open';
547: $hash{'diropen_status_'.$uri} = 'open';
548: if ($cursta eq 'open') {
549: $dirs{$uri} = 'closed';
550: $hash{'diropen_status_'.$uri} = 'closed';
551: }
552: } else {
553: $hash{'diropen_status_'.$uri} = 'open';
554: $dirs{$uri} = 'open';
555: }
556: }
557:
558: my $toplevel;
559: my $indent = 0;
560: $uri = $uri.'/' if $uri !~ /.*\/$/;
561:
562: if ($env{'form.dirPointer'} ne 'on') {
563: $hash{'top.level'} = $uri;
564: $toplevel = $uri;
565: } else {
566: $toplevel = $hash{'top.level'};
567: }
568:
569: # -------------------------------- if not at top level, provide an uplink arrow
570: if ($toplevel ne '/res/'){
571: my (@uri_com) = split(/\//,$uri);
572: pop @uri_com;
573: my $upone = join('/',@uri_com);
574: my @list = qw (0);
575: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
576: $indent = 1;
577: }
578:
579: # -------- recursively go through all the directories and output as appropriate
580: &scanDir ($r,$toplevel,$indent,\%hash);
581:
582: # ---------------------------- embed hidden information useful for group import
583: $r->print("<form name='fnum'>");
584: $r->print("<input type='hidden' name='fnum' value='$fnum' /></form>");
585:
586: # -------------------------------------------------------------- end the tables
587: $r->print('</table>');
588: $r->print('</td></tr></table>');
589:
590: # --------------------------------------------------- end the output and return
591: $r->print(&Apache::loncommon::end_page()."\n");
592: }
593: if(! $c->aborted()) {
594: # write back into the temporary file
595: my %dbfile;
596: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
597: while (my($key,$value) = each(%hash)) {
598: $dbfile{$key}=$value;
599: }
600: untie(%dbfile);
601: }
602: }
603:
604: return OK;
605: }
606:
607: # ----------------------------------------------- recursive scan of a directory
608: sub scanDir {
609: my ($r,$startdir,$indent,$hashref)=@_;
610: my $c = $r->connection();
611: my ($compuri,$curdir);
612: my $dirptr=16384;
613: my $obs;
614: $indent++;
615: my %dupdirs = %dirs;
616: my @list=&get_list($r,$startdir);
617: foreach my $line (@list) {
618: return if ($c->aborted());
619: #This is a kludge, sorry aboot this
620: my ($strip,$dom,undef,$testdir,undef,undef,undef,undef,undef,undef,undef,undef,undef,undef,$obs,undef)=split(/\&/,$line,16);
621: next if($strip =~ /.*\.meta$/ | $obs eq '1');
622: my (@fileparts) = split(/\./,$strip);
623: if ($hash{'display_attrs_9'} != 1) {
624: # if not all versions to be shown
625: if (scalar(@fileparts) >= 3) {
626: my $fext = pop @fileparts;
627: my $ov = pop @fileparts;
628: my $fname = join ('.',@fileparts,$fext);
629: next if (grep /\Q$fname\E/,@list and $ov =~ /^\d+$/);
630: }
631: }
632:
633: if ($dom eq 'domain') {
634: # dom list has full path /res/<domain name>/ already
635: $curdir='';
636: $compuri = (split(/\&/,$line))[0];
637: } else {
638: # user, dir & file have name only, i.e., w/o path
639: $compuri = join('',$startdir,$strip,'/');
640: $curdir = $startdir;
641: }
642: my $diropen = 'closed';
643: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/) or ($compuri=~/\.(sequence|page)\/$/)) {
644: while (my ($key,$val)= each %dupdirs) {
645: if ($key eq $compuri and $val eq "open") {
646: $diropen = "opened";
647: delete($dupdirs{$key});
648: delete($dirs{$key});
649: }
650: }
651: }
652: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
653: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
654: }
655: $indent--;
656: }
657:
658: # --------------- get complete matched list based on the uri (returns an array)
659: sub get_list {
660: my ($r,$uri)=@_;
661: my @list=();
662: (my $luri = $uri) =~ s/\//_/g;
663: if ($env{'form.updatedisplay'}) {
664: foreach (keys %hash) {
665: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
666: delete $hash{$_} if ($_ =~ /^dirlist_timestamp_files_/);
667: }
668: }
669:
670: if (defined($hash{'dirlist_files_'.$luri}) &&
671: $hash{'dirlist_timestamp_files_'.$luri}+600 > (time)) {
672: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
673: } elsif ($uri=~/\.(page|sequence)\/$/) {
674: # is a page or a sequence
675: $uri=~s/\/$//;
676: $uri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
677: $uri=~s/\/+/\//g;
678: foreach (&Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$uri))) {
679: my @ratpart=split(/\:/,$_);
680: push @list,$ratpart[1];
681: }
682: $hash{'dirlist_files_'.$luri} = join("\n",@list);
683: } else {
684: # is really a directory
685: @list = &Apache::lonnet::dirlist($uri);
686: $hash{'dirlist_files_'.$luri} = join("\n",@list);
687: $hash{'dirlist_timestamp_files_'.$luri} = time;
688: }
689: return @list=&match_ext($r,@list);
690: }
691:
692: sub dynmetaread {
693: my $uri=shift;
694: if (($hash{'display_attrs_8'}==1) || ($hash{'display_attrs_11'}==1)) {
695: # We don't want the filename
696: $uri=~s/\/[^\/]+$//;
697: # Did we already see this?
698: my $builddir=$uri;
699: while ($builddir) {
700: if ($dynread{$builddir}) {
701: return 0;
702: }
703: $builddir=~s/\/[^\/]+$//;
704: }
705: # Actually get the data
706: %dynhash=
707: (%dynhash,&Apache::lonmeta::get_dynamic_metadata_from_sql($uri.'/'));
708: # Remember that we got it
709: $dynread{$uri}=1;
710: }
711: }
712:
713: sub initdebug {
714: my $start_page=
715: &Apache::loncommon::start_page('Debug',undef,
716: {'only_body' => 1,});
717: $start_page =~ s/\n/ /g;
718: return <<ENDJS;
719: <script type="text/javascript">
720: var debugging = true;
721: if (debugging) {
722: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
723: }
724:
725: function output(text) {
726: if (debugging) {
727: debuggingWindow.document.writeln(text);
728: }
729: }
730: output('$start_page<pre>');
731: </script>
732: ENDJS
733: }
734:
735: sub writedebug {
736: my ($text) = @_;
737: return "<script type=\"text/javascript\">output('$text');</script>";
738: }
739:
740: # -------------------- filters out files based on extensions (returns an array)
741: sub match_ext {
742: my ($r,@packlist)=@_;
743: my @trimlist;
744: my $nextline;
745: my @fileext;
746: my $dirptr=16384;
747:
748: foreach my $line (@packlist) {
749: chomp $line;
750: $line =~ s/^\/home\/httpd\/html//;
751: my @unpackline = split (/\&/,$line);
752: next if ($unpackline[0] eq '.');
753: next if ($unpackline[0] eq '..');
754: my @filecom = split (/\./,$unpackline[0]);
755: my $fext = pop(@filecom);
756: my $fnptr = ($unpackline[3]&$dirptr) || ($fext=~/\.(page|sequence)$/);
757: if ($fnptr == 0 and $unpackline[3] ne "") {
758: my $embstyle = &Apache::loncommon::fileembstyle($fext);
759: push @trimlist,$line if (defined($embstyle) &&
760: ($embstyle ne 'hdn' or $fext eq 'meta'));
761: } else {
762: push @trimlist,$line;
763: }
764: }
765: @trimlist = sort {uc($a) cmp uc($b)} (@trimlist);
766: return @trimlist;
767: }
768:
769: # ------------------------------- displays one line in appropriate table format
770: sub display_line {
771: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
772: my (@pathfn, $fndir);
773: # there could be relative paths (files actually belonging into this directory)
774: # or absolute paths (for example, from sequences)
775: my $absolute;
776: my $pathprefix;
777: if ($line=~m|^/res/| && $startdir ne '') {
778: $absolute=1;
779: $pathprefix='';
780: } else {
781: $absolute=0;
782: $pathprefix=$startdir;
783: }
784: my $dirptr=16384;
785: my $fileclr="#ffffe6";
786: my $iconpath= $r->dir_config('lonIconsURL') . '/';
787:
788: my @filecom = split (/\&/,$line);
789: my @pathcom = split (/\//,$filecom[0]);
790: my $listname = $pathcom[scalar(@pathcom)-1];
791: my $fnptr = $filecom[3]&$dirptr;
792: my $msg = &mt('View').' '.$filecom[0].' '.&mt('resources');
793: $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
794:
795: my $tabtag='</td>';
796: my $i=0;
797: while ($i<=11) {
798: $tabtag=join('',$tabtag,"<td> </td>")
799: if $hash{'display_attrs_'.$i} == 1;
800: $i++;
801: }
802: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
803:
804: # display uplink arrow
805: if ($filecom[1] eq 'viewOneUp') {
806: my $updir=$startdir;
807: # -------------- Filter out sequence containment in crumbs and "recent folders"
808: $updir='/'.(split(/\.(page|sequence)\/\//,$startdir))[-1];
809: $updir=~s/\/+/\//g;
810:
811: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
812: $r->print("<td>\n");
813: $r->print ('<form method="post" name="dirpathUP" action="'.$updir.
814: '/" '.
815: 'onSubmit="return rep_dirpath(\'UP\','.
816: 'document.forms.fileattr.acts.value)" '.
817: 'enctype="application/x-www-form-urlencoded"'.
818: '>'."\n");
819: $r->print ('<input type=hidden name=openuri value="'.
820: $startdir.'" />'."\n");
821: $r->print ('<input type="hidden" name="acts" value="" />'."\n");
822: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
823: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
824: "\n");
825: $r->print(&mt("Up")."</form>$tabtag</tr>\n");
826: return OK;
827: }
828: # Do we have permission to look at this?
829:
830: if($filecom[15] ne '1') { return OK if (!&Apache::lonnet::allowed('bre',$pathprefix.$filecom[0])); }
831:
832: # make absolute links appear on different background
833: if ($absolute) { $fileclr='#ccdd99'; }
834:
835: # display domain
836: if ($filecom[1] eq 'domain') {
837: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n")
838: if ($env{'form.dirPointer'} eq "on");
839: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
840: $r->print("<td>");
841: &begin_form ($r,$filecom[0]);
842: my $anchor = $filecom[0];
843: $anchor =~ s/\///g;
844: $r->print ('<a name="'.$anchor.'">');
845: $r->print ('<input type="hidden" name="acts" value="" />');
846: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
847: $diropen.'.gif"');
848: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
849: "\n");
850: my $quotable_filecom = &Apache::loncommon::escape_single($filecom[0]);
851: $r->print ('<a href="javascript:gothere(\''.$quotable_filecom.
852: '\')"><img src="'.$iconpath.'server.gif"');
853: $r->print (' border="0" /></a>'."\n");
854: $r->print (&mt("Domain")." - $listname ");
855: if ($Apache::lonnet::domaindescription{$listname}) {
856: $r->print("(".$Apache::lonnet::domaindescription{$listname}.
857: ")");
858: }
859: $r->print ("</form>$tabtag</tr>\n");
860: return OK;
861:
862: # display user directory
863: }
864: if ($filecom[1] eq 'user') {
865: $r->print("<tr valign=$valign bgcolor=$fileclr>$extrafield");
866: $r->print("<td nowrap>\n");
867: my $curdir = $startdir.$filecom[0].'/';
868: my $anchor = $curdir;
869: $anchor =~ s/\///g;
870: &begin_form ($r,$curdir);
871: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
872: 'whitespace1.gif" border="0" />'."\n");
873: $r->print ('<input type="hidden" name="acts" value="" />');
874: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
875: '.gif"');
876: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
877: "\n");
878: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
879: $r->print ('<a href="javascript:gothere(\''.$quotable_curdir
880: .'\')"><img src='.
881: $iconpath.'quill.gif border="0" name="'.$msg.
882: '" height="22" /></a>');
883: my $domain=(split(m|/|,$startdir))[2];
884: my $plainname=&Apache::loncommon::plainname($listname,$domain);
885: $r->print ($listname);
886: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
887: $r->print ('</form>'.$tabtag.'</tr>'."\n");
888: return OK;
889: }
890:
891: # display file
892: if (($fnptr == 0 and $filecom[3] ne '') or $absolute) {
893: my $filelink = $pathprefix.$filecom[0];
894: my @file_ext = split (/\./,$listname);
895: my $curfext = $file_ext[-1];
896: if (@Omit) {
897: foreach (@Omit) { return OK if ($curfext eq $_); }
898: }
899: if (@Only) {
900: my $skip = 1;
901: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
902: return OK if ($skip > 0);
903: }
904: # Set the icon for the file
905: my $iconname = &Apache::loncommon::icon($listname);
906: $r->print("<tr valign='$valign' bgcolor=$fileclr><td nowrap='nowrap' valign='top'>");
907:
908: if ($env{'form.catalogmode'} eq 'interactive') {
909: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
910: $r->print("<a href=\"javascript:select_data(\'",
911: $quotable_filelink,"')\">");
912: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
913: "\n");
914: $r->print("</td><td nowrap>");
915: } elsif ($env{'form.catalogmode'} eq 'import') {
916: $r->print("<form name='form$fnum'>\n");
917: $r->print("<input type='checkbox' name='filelink"."' ".
918: "value='$filelink' onClick='".
919: "javascript:queue(\"form$fnum\")' ");
920: if ($hash{'store_'.$filelink}) {
921: $r->print("checked");
922: }
923: $r->print(" />\n");
924: $r->print("</form></td><td nowrap>");
925: $hash{"pre_${fnum}_link"}=$filelink;
926: $fnum++;
927: }
928: # Form to open or close sequences
929: if ($filelink=~/\.(page|sequence)$/) {
930: my $curdir = $startdir.$filecom[0].'/';
931: my $anchor = $curdir;
932: $anchor =~ s/\///g;
933: &begin_form($r,$curdir);
934: $indent--;
935: }
936: # General indentation
937: if ($indent > 0 and $indent < 11) {
938: $r->print("<img src=",$iconpath,"whitespace",$indent,
939: ".gif border='0' />\n");
940: } elsif ($indent >0) {
941: my $ten = int($indent/10.);
942: my $rem = $indent%10.0;
943: my $count = 0;
944: while ($count < $ten) {
945: $r->print("<img src=",$iconpath,
946: "whitespace10.gif border='0' />\n");
947: $count++;
948: }
949: $r->print("<img src=",$iconpath,"whitespace",$rem,
950: ".gif border='0' />\n") if $rem > 0;
951: }
952: # Sequence open/close icon
953: if ($filelink=~/\.(page|sequence)$/) {
954: my $curdir = $startdir.$filecom[0].'/';
955: my $anchor = $curdir;
956: $anchor =~ s/\///g;
957: $r->print ('<input type="hidden" name="acts" value="" />');
958: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
959: 'folder_pointer_'.$diropen.'.gif"');
960: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
961: "\n");
962: }
963: # Filetype icons
964: $r->print("<img src='$iconname' border='0' />\n");
965: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
966:
967:
968: $r->print (" <a href=\"javascript:openWindow('".$quotable_filelink.
969: "', 'previewfile', '450', '500', 'no', 'yes','yes')\";".
970: " TARGET=_self>$listname</a> ");
971:
972: $r->print (" (<a href=\"javascript:openWindow('".$quotable_filelink.
973: ".meta', 'metadatafile', '500', '550', 'no', 'yes','no')\"; ".
974: "TARGET=_self>metadata</a>) ");
975: # Close form to open/close sequence
976: if ($filelink=~/\.(page|sequence)$/) {
977: $r->print('</form>');
978: }
979: $r->print("</td>\n");
980: if ($hash{'display_attrs_0'} == 1) {
981: my $title = &Apache::lonnet::gettitle($filelink,'title');
982: $r->print('<td> '.($title eq '' ? ' ' : $title).
983: ' </td>'."\n");
984: }
985: $r->print('<td align=right> ',
986: $filecom[8]," </td>\n")
987: if $hash{'display_attrs_1'} == 1;
988: $r->print('<td> '.
989: (localtime($filecom[9]))." </td>\n")
990: if $hash{'display_attrs_2'} == 1;
991: $r->print('<td> '.
992: (localtime($filecom[10]))." </td>\n")
993: if $hash{'display_attrs_3'} == 1;
994:
995: if ($hash{'display_attrs_4'} == 1) {
996: my $author = &Apache::lonnet::metadata($filelink,'author');
997: $r->print('<td> '.($author eq '' ? ' ' : $author).
998: " </td>\n");
999: }
1000: if ($hash{'display_attrs_5'} == 1) {
1001: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1002: # $keywords = ' ' if (!$keywords);
1003: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1004: " </td>\n");
1005: }
1006: #'
1007:
1008: if ($hash{'display_attrs_6'} == 1) {
1009: my $lang = &Apache::lonnet::metadata($filelink,'language');
1010: $lang = &Apache::loncommon::languagedescription($lang);
1011: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1012: " </td>\n");
1013: }
1014: if ($hash{'display_attrs_8'} == 1) {
1015: # statistics
1016: &dynmetaread($filelink);
1017: $r->print("<td>");
1018: &dynmetaprint($r,$filelink,'count');
1019: &dynmetaprint($r,$filelink,'course');
1020: &dynmetaprint($r,$filelink,'stdno');
1021: &dynmetaprint($r,$filelink,'avetries');
1022: &dynmetaprint($r,$filelink,'difficulty');
1023: &dynmetaprint($r,$filelink,'disc');
1024: &dynmetaprint($r,$filelink,'clear');
1025: &dynmetaprint($r,$filelink,'technical');
1026: &dynmetaprint($r,$filelink,'correct');
1027: &dynmetaprint($r,$filelink,'helpful');
1028: &dynmetaprint($r,$filelink,'depth');
1029: $r->print(" </td>\n");
1030:
1031: }
1032: if ($hash{'display_attrs_10'} == 1) {
1033: my $source = &Apache::lonnet::metadata($filelink,'sourceavail');
1034: if($source eq 'open') {
1035: my $sourcelink = &Apache::lonsource::make_link($filelink,$listname);
1036: my $quotable_sourcelink = &Apache::loncommon::escape_single($sourcelink);
1037: $r->print('<td>'."<a href=\"javascript:openWindow('"
1038: .$quotable_sourcelink.
1039: "', 'previewsource', '700', '700', 'no', 'yes','yes')\";".
1040: " TARGET=_self>Yes</a> "."</td>\n");
1041: } else { #A cuddled else. :P
1042: $r->print("<td> </td>\n");
1043: }
1044: }
1045: if ($hash{'display_attrs_11'} == 1) {
1046: # links
1047: &dynmetaread($filelink);
1048: $r->print('<td>');
1049: &coursecontext($r,$filelink);
1050: &dynmetaprint($r,$filelink,'goto_list');
1051: &dynmetaprint($r,$filelink,'comefrom_list');
1052: &dynmetaprint($r,$filelink,'sequsage_list');
1053: &dynmetaprint($r,$filelink,'dependencies');
1054: &dynmetaprint($r,$filelink,'course_list');
1055: $r->print('</td>');
1056: }
1057: if ($hash{'display_attrs_7'} == 1) {
1058: # Show resource
1059: my $output=&showpreview($filelink);
1060: $r->print('<td> '.($output eq '' ? ' ':$output).
1061: " </td>\n");
1062: }
1063: $r->print("</tr>\n");
1064: }
1065:
1066: # -- display directory
1067: if ($fnptr == $dirptr) {
1068: my $curdir = $startdir.$filecom[0].'/';
1069: my $anchor = $curdir;
1070: $anchor =~ s/\///g;
1071: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=$valign>");
1072: &begin_form ($r,$curdir);
1073: my $indentm1 = $indent-1;
1074: if ($indentm1 < 11 and $indentm1 > 0) {
1075: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
1076: ".gif border='0' />\n");
1077: } else {
1078: my $ten = int($indentm1/10.);
1079: my $rem = $indentm1%10.0;
1080: my $count = 0;
1081: while ($count < $ten) {
1082: $r->print ("<img src=",$iconpath
1083: ,"whitespace10.gif border='0' />\n");
1084: $count++;
1085: }
1086: $r->print ("<img src=",$iconpath,"whitespace",$rem,
1087: ".gif border='0' />\n") if $rem > 0;
1088: }
1089: $r->print ('<input type="hidden" name="acts" value="" />');
1090: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
1091: 'folder_pointer_'.$diropen.'.gif"');
1092: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
1093: "\n");
1094: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
1095: $r->print ('<a href="javascript:gothere(\''
1096: .$quotable_curdir.'\')"><img src="'.
1097: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
1098: "\n");
1099: $r->print ("$listname</td>\n");
1100: # Attributes
1101: my $filelink = $startdir.$filecom[0].'/default';
1102:
1103: if ($hash{'display_attrs_0'} == 1) {
1104: my $title = &Apache::lonnet::gettitle($filelink,'title');
1105: $r->print('<td> '.($title eq '' ? ' ' : $title).
1106: ' </td>'."\n");
1107: }
1108: $r->print('<td align=right> ',
1109: $filecom[8]," </td>\n")
1110: if $hash{'display_attrs_1'} == 1;
1111: $r->print('<td> '.
1112: (localtime($filecom[9]))." </td>\n")
1113: if $hash{'display_attrs_2'} == 1;
1114: $r->print('<td> '.
1115: (localtime($filecom[10]))." </td>\n")
1116: if $hash{'display_attrs_3'} == 1;
1117:
1118: if ($hash{'display_attrs_4'} == 1) {
1119: my $author = &Apache::lonnet::metadata($filelink,'author');
1120: $r->print('<td> '.($author eq '' ? ' ' : $author).
1121: " </td>\n");
1122: }
1123: if ($hash{'display_attrs_5'} == 1) {
1124: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1125: # $keywords = ' ' if (!$keywords);
1126: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1127: " </td>\n");
1128: }
1129: if ($hash{'display_attrs_6'} == 1) {
1130: my $lang = &Apache::lonnet::metadata($filelink,'language');
1131: $lang = &Apache::loncommon::languagedescription($lang);
1132: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1133: " </td>\n");
1134: }
1135: if ($hash{'display_attrs_8'} == 1) {
1136: $r->print('<td> </td>');
1137: }
1138: if ($hash{'display_attrs_10'} == 1) {
1139: $r->print('<td> </td>');
1140: }
1141: if ($hash{'display_attrs_11'} == 1) {
1142: $r->print('<td> </td>');
1143: }
1144: if ($hash{'display_attrs_7'} == 1) {
1145: $r->print('<td> </td>');
1146: }
1147: $r->print('</form></tr>');
1148: }
1149:
1150: }
1151:
1152: sub coursecontext {
1153: my ($r,$filelink)=@_;
1154: my $filesymb=&Apache::lonnet::symbread($filelink);
1155: if ($filesymb) {
1156: my ($map,$index,$resource)=&Apache::lonnet::decode_symb($filesymb);
1157: $r->print(&mt('Already in this course:<br />[_1] in folder/map [_2].<br />',
1158: &Apache::lonnet::gettitle($resource),
1159: &Apache::lonnet::gettitle($map)));
1160: }
1161: }
1162:
1163: sub showpreview {
1164: my ($filelink)=@_;
1165: my ($curfext)=($filelink=~/\.(\w+)$/);
1166: my $output='';
1167: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
1168: if ($embstyle eq 'ssi') {
1169: my $cache=$Apache::lonnet::perlvar{'lonDocRoot'}.$filelink.
1170: '.tmp';
1171: if ((!$env{'form.updatedisplay'}) &&
1172: (-e $cache)) {
1173: open(FH,$cache);
1174: $output=join("\n",<FH>);
1175: close(FH);
1176: } else {
1177: # In update display mode, remove old cache. This is done to retroactively
1178: # clean up course context renderings.
1179: if (-e $cache) {
1180: unlink($cache);
1181: }
1182: $output=&Apache::lonnet::ssi_body($filelink);
1183: # Is access denied? Don't render, don't store
1184: if ($output=~/LONCAPAACCESSCONTROLERRORSCREEN/s) {
1185: $output='';
1186: # Was this rendered in course content? Don't store
1187: } elsif (!&Apache::lonnet::symbread($filelink)) {
1188: open(FH,">$cache");
1189: print FH $output;
1190: close(FH);
1191: }
1192: }
1193: $output='<font size="-2">'.$output.'</font>';
1194: } elsif ($embstyle eq 'img') {
1195: $output='<img src="'.$filelink.'" />';
1196: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
1197: $output='<img src="http://'.
1198: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
1199: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
1200: }
1201: return $output;
1202: }
1203:
1204: sub dynmetaprint {
1205: my ($r,$filelink,$item)=@_;
1206: if ($dynhash{$filelink}->{$item}) {
1207: $r->print("\n<br />".$fieldnames{$item}.': '.
1208: &Apache::lonmeta::prettyprint($item,
1209: $dynhash{$filelink}->{$item},
1210: (($env{'form.catalogmode'} ne 'import')?'preview':''),
1211: '',
1212: (($env{'form.catalogmode'} eq 'import')?'document.forms.fileattr':''),1));
1213: }
1214: }
1215:
1216: # ------------------- prints the beginning of a form for directory or file link
1217: sub begin_form {
1218: my ($r,$uri) = @_;
1219: my $anchor = $uri;
1220: $anchor =~ s/\///g;
1221: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
1222: '#'.$anchor.
1223: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
1224: ',document.forms.fileattr.acts.value)" '.
1225: 'enctype="application/x-www-form-urlencoded">'."\n");
1226: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'" />'.
1227: "\n");
1228: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n");
1229: $dnum++;
1230: }
1231:
1232: # --------- settings whenever the user causes the indexer window to be launched
1233: sub start_fresh_session {
1234: delete $hash{'form.catalogmode'};
1235: delete $hash{'form.mode'};
1236: delete $hash{'form.form'};
1237: delete $hash{'form.element'};
1238: delete $hash{'form.omit'};
1239: delete $hash{'form.only'};
1240: foreach (keys %hash) {
1241: delete $hash{$_} if (/^(pre_|store)/);
1242: }
1243: }
1244:
1245: # ------------------------------------------------------------------- setvalues
1246: sub setvalues {
1247: # setvalues is used in registerurl to synchronize the database
1248: # hash and environment hashes
1249: my ($H1,$h1key,$H2,$h2key) =@_;
1250: #
1251: if (exists $H2->{$h2key}) {
1252: $H1->{$h1key} = $H2->{$h2key};
1253: } elsif (exists $H1->{$h1key}) {
1254: $H2->{$h2key} = $H1->{$h1key};
1255: }
1256: }
1257:
1258: 1;
1259:
1260: sub cleanup {
1261: if (tied(%hash)){
1262: &Apache::lonnet::logthis('Cleanup indexer: hash');
1263: }
1264: return OK;
1265: }
1266:
1267:
1268:
1269:
1270:
1271: =head1 NAME
1272:
1273: Apache::lonindexer - mod_perl module for cross server filesystem browsing
1274:
1275: =head1 SYNOPSIS
1276:
1277: Invoked by /etc/httpd/conf/srm.conf:
1278:
1279: <LocationMatch "^/res.*/$">
1280: SetHandler perl-script
1281: PerlHandler Apache::lonindexer
1282: </LocationMatch>
1283:
1284: =head1 INTRODUCTION
1285:
1286: This module enables a scheme of browsing across a cross server.
1287:
1288: This is part of the LearningOnline Network with CAPA project
1289: described at http://www.lon-capa.org.
1290:
1291: =head1 BEGIN SUBROUTINE
1292:
1293: This routine is only run once after compilation.
1294:
1295: =over 4
1296:
1297: =item *
1298:
1299: Initializes %language hash table.
1300:
1301: =back
1302:
1303: =head1 HANDLER SUBROUTINE
1304:
1305: This routine is called by Apache and mod_perl.
1306:
1307: =over 4
1308:
1309: =item *
1310:
1311: read in machine configuration variables
1312:
1313: =item *
1314:
1315: see if called from an interactive mode
1316:
1317: =item *
1318:
1319: refresh environment with user database values (in %hash)
1320:
1321: =item *
1322:
1323: define extra fields and buttons in case of special mode
1324:
1325: =item *
1326:
1327: set catalogmodefunctions to have extra needed javascript functionality
1328:
1329: =item *
1330:
1331: print header
1332:
1333: =item *
1334:
1335: evaluate actions from previous page (both cumulatively and chronologically)
1336:
1337: =item *
1338:
1339: output title
1340:
1341: =item *
1342:
1343: get state of file attributes to be showing
1344:
1345: =item *
1346:
1347: output state of file attributes to be showing
1348:
1349: =item *
1350:
1351: output starting row to the indexed file/directory hierarchy
1352:
1353: =item *
1354:
1355: read in what directories have previously been set to "open"
1356:
1357: =item *
1358:
1359: if not at top level, provide an uplink arrow
1360:
1361: =item *
1362:
1363: recursively go through all the directories and output as appropriate
1364:
1365: =item *
1366:
1367: information useful for group import
1368:
1369: =item *
1370:
1371: end the tables
1372:
1373: =item *
1374:
1375: end the output and return
1376:
1377: =back
1378:
1379: =head1 OTHER SUBROUTINES
1380:
1381: =over 4
1382:
1383: =item *
1384:
1385: scanDir - recursive scan of a directory
1386:
1387: =item *
1388:
1389: get_list - get complete matched list based on the uri (returns an array)
1390:
1391: =item *
1392:
1393: match_ext - filters out files based on extensions (returns an array)
1394:
1395: =item *
1396:
1397: display_line - displays one line in appropriate table format
1398:
1399: =item *
1400:
1401: begin_form - prints the beginning of a form for directory or file link
1402:
1403: =item *
1404:
1405: start_fresh_session - settings whenever the user causes the indexer window
1406: to be launched
1407:
1408: =back
1409:
1410: =cut
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