1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.141 2006/03/16 22:42:58 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'}_$env{'user.name'}_indexer.db";
123: %hash = ();
124: {
125: my %dbfile;
126: if (tie(%dbfile,'GDBM_File',$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: &Apache::loncommon::end_page());
164: return OK;
165: }
166:
167: # -------------------- refresh environment with user database values (in %hash)
168: &setvalues(\%hash,'form.catalogmode',\%env,'form.catalogmode' );
169:
170: # --------------------- define extra fields and buttons in case of special mode
171: if ($env{'form.catalogmode'} eq 'interactive') {
172: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
173: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
174: ' border="0" /></td>';
175: $colspan=" colspan='2' ";
176: my $cl=&mt('Close');
177: $closebutton=<<END;
178: <input type="button" name="close" value='$cl' onClick="self.close()" />
179: END
180: }
181: elsif ($env{'form.catalogmode'} eq 'groupimport') {
182: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
183: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
184: ' border="0" /></td>';
185: $colspan=" colspan='2' ";
186: my $cl=&mt('Close');
187: my $gi=&mt('Import');
188: $closebutton=<<END;
189: <input type="button" name="close" value='$cl' onClick="self.close()" />
190: END
191: $groupimportbutton=<<END;
192: <input type="button" name="groupimport" value='$gi'
193: onClick="javascript:select_group()" />
194: END
195: }
196: # Additions made by Matthew to make the browser a little easier to deal
197: # with in the future.
198: #
199: # $mode (at this time) indicates if we are in edit mode.
200: # $form is the name of the form that the URL is placed when the
201: # selection is made.
202: # $element is the name of the element in $formname which receives
203: # the URL.
204: #&Apache::lonxml::debug('Checking mode, form, element');
205: &setvalues(\%hash,'form.mode' ,\%env,'form.mode' );
206: &setvalues(\%hash,'form.form' ,\%env,'form.form' );
207: &setvalues(\%hash,'form.element' ,\%env,'form.element');
208: &setvalues(\%hash,'form.titleelement',\%env,'form.titleelement');
209: &setvalues(\%hash,'form.only' ,\%env,'form.only' );
210: &setvalues(\%hash,'form.omit' ,\%env,'form.omit' );
211:
212: # Deal with 'omit' and 'only'
213: if (exists $env{'form.omit'}) {
214: @Omit = split(',',$env{'form.omit'});
215: }
216: if (exists $env{'form.only'}) {
217: @Only = split(',',$env{'form.only'});
218: }
219:
220: my $mode = $env{'form.mode'};
221: my ($form,$element,$titleelement);
222: if ($mode eq 'edit' || $mode eq 'parmset') {
223: $form = $env{'form.form'};
224: $element = $env{'form.element'};
225: $titleelement = $env{'form.titleelement'};
226: }
227: #&Apache::lonxml::debug("mode=$mode form=$form element=$element titleelement=$titleelement");
228: # ------ set catalogmodefunctions to have extra needed javascript functionality
229: my $catalogmodefunctions='';
230: if ($env{'form.catalogmode'} eq 'interactive' or
231: $env{'form.catalogmode'} eq 'groupimport') {
232: # The if statement below sets us up to use the old version
233: # by default (ie. if $mode is undefined). This is the easy
234: # way out. Hopefully in the future I'll find a way to get
235: # the calls dealt with in a more comprehensive manner.
236:
237: #
238: # There is now also mode "simple", which is for the simple version of the rat
239: #
240: #
241: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
242: my $location = "/adm/groupsort?catalogmode=groupimport&";
243: $location .= "mode=".$mode."&";
244: $location .= "acts=";
245: $catalogmodefunctions=<<"END";
246: function select_data(url) {
247: changeURL(url);
248: self.close();
249: }
250: function select_group() {
251: window.location="$location"+document.forms.fileattr.acts.value;
252: }
253: function changeURL(val) {
254: if (opener.inf) {
255: if (opener.inf.document.forms.resinfo.elements.u) {
256: opener.inf.document.forms.resinfo.elements.u.value=val;
257: }
258: }
259: }
260: END
261: } elsif ($mode eq 'edit') { # we are in 'edit' mode
262: my $location = "/adm/groupsort?catalogmode=interactive&";
263: $location .= "form=$form&element=$element&mode=edit&acts=";
264: $catalogmodefunctions=<<END;
265: // mode = $mode
266: function select_data(url) {
267: var location = "/res/?launch=2&form=$form&element=$element&titleelement=$titleelement&acts=" + url;
268: window.location=location;
269: }
270: function select_group() {
271: window.location="$location"+document.forms.fileattr.acts.value;
272: }
273:
274: function changeURL(val) {
275: if (window.opener.document) {
276: window.opener.document.forms["$form"].elements["$element"].value=val;
277: } else {
278: alert("The file you selected is: "+val);
279: }
280: }
281: END
282: if (!$titleelement) {
283: $catalogmodefunctions.='function changeTitle(val) {}';
284: } else {
285: $catalogmodefunctions.=<<END;
286: function changeTitle(val) {
287: if (window.opener.document) {
288: window.opener.document.forms["$form"].elements["$titleelement"].value=val;
289: } else {
290: alert("The title of the file you selected is: "+val);
291: }
292: }
293: END
294: }
295: } elsif ($mode eq 'parmset') {
296: my $location = "/adm/groupsort?catalogmode=interactive&";
297: $location .= "form=$form&element=$element&mode=parmset&acts=";
298: $catalogmodefunctions=<<END;
299: // mode = $mode
300: function select_data(url) {
301: changeURL(url);
302: self.close();
303: }
304:
305: function select_group() {
306: window.location="$location"+document.forms.fileattr.acts.value;
307: }
308:
309: function changeURL(val) {
310: if (window.opener.document) {
311: var elementname = "$element"+"_value";
312: var checkboxname = "$element"+"_setparmval";
313: window.opener.document.forms["$form"].elements[elementname].value=val;
314: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
315: } else {
316: alert("The file you selected is: "+val);
317: }
318: }
319:
320: END
321: }
322: }
323: $catalogmodefunctions.=<<END;
324: var acts='';
325: function rep_dirpath(suffix,val) {
326: eval("document.forms.dirpath"+suffix+".acts.value=val");
327: }
328: END
329: if ($env{'form.catalogmode'} eq 'groupimport') {
330: $catalogmodefunctions.=<<END;
331: function queue(val) {
332: if (eval("document.forms."+val+".filelink.checked")) {
333: var l=val.length;
334: var v=val.substring(4,l);
335: document.forms.fileattr.acts.value+='1a'+v+'b';
336: }
337: else {
338: var l=val.length;
339: var v=val.substring(4,l);
340: document.forms.fileattr.acts.value+='0a'+v+'b';
341: }
342: }
343: END
344: }
345:
346: # ---------------------------------------------------------------- Print Header
347: my $js = <<"ENDHEADER";
348: <script type="text/javascript">
349: $catalogmodefunctions
350: function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
351: var xpos = (screen.width-w)/2;
352: xpos = (xpos < 0) ? '0' : xpos;
353: var ypos = (screen.height-h)/2-30;
354: ypos = (ypos < 0) ? '0' : ypos;
355: var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
356: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
357: options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
358: var newWin = window.open(url, wdwName, options);
359: newWin.focus();
360: }
361: function gothere(val) {
362: window.location=val+'?acts='+document.forms.fileattr.acts.value;
363: }
364: </script>
365: ENDHEADER
366:
367: my ($headerdom)=($uri=~/^\/res\/(\w+)\//);
368: $r->print(&Apache::loncommon::start_page('Browse Resources',$js,
369: {'domain' => $headerdom,}));
370: # - Evaluate actions from previous page (both cumulatively and chronologically)
371: if ($env{'form.catalogmode'} eq 'groupimport') {
372: my $acts=$env{'form.acts'};
373: my @Acts=split(/b/,$acts);
374: my %ahash;
375: my %achash;
376: my $ac=0;
377: # some initial hashes for working with data
378: foreach (@Acts) {
379: my ($state,$ref)=split(/a/);
380: $ahash{$ref}=$state;
381: $achash{$ref}=$ac;
382: $ac++;
383: }
384: # sorting through the actions and changing the global database hash
385: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
386: my $key=$_;
387: if ($ahash{$key} eq '1') {
388: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
389: $hash{'pre_'.$key.'_title'};
390: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
391: $hash{'storectr'}+0;
392: $hash{'storectr'}++;
393: }
394: if ($ahash{$key} eq '0') {
395: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
396: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
397: }
398: }
399: }
400: # deleting the previously cached listing
401: foreach (keys %hash) {
402: if ($_ =~ /^pre_/ && $_ =~/link$/) {
403: my $key = $_;
404: $key =~ s/^pre_//;
405: $key =~ s/_[^_]*$//;
406: delete $hash{'pre_'.$key.'_title'};
407: delete $hash{'pre_'.$key.'_link'};
408: }
409: }
410: }
411:
412: # ---------------------------------- get state of file attributes to be showing
413: if ($env{'form.attrs'}) {
414: for (my $i=0; $i<=11; $i++) {
415: delete $hash{'display_attrs_'.$i};
416: if ($env{'form.attr'.$i} == 1) {
417: $attrchk[$i] = 'checked';
418: $hash{'display_attrs_'.$i} = 1;
419: }
420: }
421: } else {
422: for (my $i=0; $i<=11; $i++) {
423: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
424: }
425: }
426:
427: # ------------------------------- output state of file attributes to be showing
428: # All versions has to the last item
429: # since it does not take an extra col
430: my %lt=&Apache::lonlocal::texthash(
431: 'ti' => 'Title',
432: 'si' => 'Size',
433: 'la' => 'Last access',
434: 'lm' => 'Last modified',
435: 'st' => 'Statistics',
436: 'au' => 'Author',
437: 'kw' => 'Keywords',
438: 'ln' => 'Language',
439: 'sa' => 'Source Available',
440: 'sr' => 'Show resource',
441: 'li' => 'Linked/Related Resources',
442: 'av' => 'All versions',
443: 'ud' => 'Update Display'
444: );
445: $r->print(<<END);
446: <form method="post" name="fileattr" action="$uri"
447: enctype="application/x-www-form-urlencoded">
448: <label><input type="checkbox" name="attr9" value="1" $attrchk[9] onClick="this.form.submit();" /> $lt{'av'}</label>
449: <table border="0">
450: <tr>
451: <td><label><input type="checkbox" name="attr0" value="1" $attrchk[0] onClick="this.form.submit();" /> $lt{'ti'}</label></td>
452: <td><label><input type="checkbox" name="attr4" value="1" $attrchk[4] onClick="this.form.submit();" /> $lt{'au'}</label></td>
453: <td><label><input type="checkbox" name="attr5" value="1" $attrchk[5] onClick="this.form.submit();" /> $lt{'kw'}</label></td>
454: <td><label><input type="checkbox" name="attr6" value="1" $attrchk[6] onClick="this.form.submit();" /> $lt{'ln'}</label></td>
455: </tr>
456: <tr>
457: <td><label><input type="checkbox" name="attr1" value="1" $attrchk[1] onClick="this.form.submit();" /> $lt{'si'}</label></td>
458: <td><label><input type="checkbox" name="attr2" value="1" $attrchk[2] onClick="this.form.submit();" /> $lt{'la'}</label></td>
459: <td><label><input type="checkbox" name="attr3" value="1" $attrchk[3] onClick="this.form.submit();" /> $lt{'lm'}</label></td>
460: <td><label><input type="checkbox" name="attr10" value="1" $attrchk[10] onClick="this.form.submit();" /> $lt{'sa'}</label></td>
461: </tr>
462: <tr>
463: <td><label><input type="checkbox" name="attr8" value="1" $attrchk[8] onClick="this.form.submit();" /> $lt{'st'}</label></td>
464: <td><label><input type="checkbox" name="attr11" value="1" $attrchk[11] onClick="this.form.submit();" /> $lt{'li'}</label></td>
465: <td><label><input type="checkbox" name="attr7" value="1" $attrchk[7] onClick="this.form.submit();" /> $lt{'sr'}</label></td>
466: <td> </td>
467: </tr>
468: </table>
469: <input type="hidden" name="attrs" value="1" />
470: <input type="submit" name="updatedisplay" value="$lt{'ud'}" />
471: <input type="hidden" name="acts" value="" />
472: $closebutton $groupimportbutton
473: END
474: # -------------- Filter out sequence containment in crumbs and "recent folders"
475: my $storeuri=$uri;
476: $storeuri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
477: $storeuri=~s/\/+/\//g;
478: # ---------------------------------------------------------------- Bread crumbs
479: $r->print(&Apache::lonhtmlcommon::crumbs($storeuri,'','',
480: (($env{'form.catalogmode'} eq 'groupimport')?
481: 'document.forms.fileattr':'')).
482: &Apache::lonhtmlcommon::select_recent('residx','resrecent',
483: '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();'));
484: # -------------------------------------------------------- Resource Home Button
485: my $reshome=$env{'course.'.$env{'request.course.id'}.'.reshome'};
486: if ($reshome) {
487: $r->print("<font size='+2'><a href='");
488: if ($env{'form.catalogmode'} eq 'groupimport') {
489: $r->print('javascript:document.forms.fileattr.action="'.$reshome.'";document.forms.fileattr.submit();');
490: } else {
491: $r->print($reshome);
492: }
493: $r->print("'>".&mt('Home').'</a></font>');
494: }
495: $r->print('</form>');
496: # ------------------------------------------------------ Remember where we were
497: &Apache::loncommon::storeresurl($storeuri);
498: &Apache::lonhtmlcommon::store_recent('residx',$storeuri,$storeuri);
499: # ----------------- output starting row to the indexed file/directory hierarchy
500: my $titleclr="#ddffff";
501: #$r->print(&initdebug());
502: #$r->print(&writedebug("Omit:@Omit")) if (@Omit);
503: #$r->print(&writedebug("Only:@Only")) if (@Only);
504: $r->print('<table width="100%" border="0"><tr><td bgcolor="#777777">'."\n");
505: $r->print('<table width="100%" border="0"><tr bgcolor="'.$titleclr.'">'."\n");
506: $r->print("<td $colspan><b>".&mt('Name')."</b></td>\n");
507: $r->print("<td><b>".&mt('Title')."</b></td>\n")
508: if ($hash{'display_attrs_0'} == 1);
509: $r->print("<td align=right><b>".&mt("Size")." (".&mt("bytes").") ".
510: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
511: $r->print("<td><b>".&mt("Last accessed")."</b></td>\n")
512: if ($hash{'display_attrs_2'} == 1);
513: $r->print("<td><b>".&mt("Last modified")."</b></td>\n")
514: if ($hash{'display_attrs_3'} == 1);
515: $r->print("<td><b>".&mt("Author(s)")."</b></td>\n")
516: if ($hash{'display_attrs_4'} == 1);
517: $r->print("<td><b>".&mt("Keywords")."</b></td>\n")
518: if ($hash{'display_attrs_5'} == 1);
519: $r->print("<td><b>".&mt("Language")."</b></td>\n")
520: if ($hash{'display_attrs_6'} == 1);
521: $r->print("<td><b>".&mt("Usage Statistics")." <br />(".
522: &mt("Courses/Network Hits").")</b> ".&mt('updated periodically')."</td>\n")
523: if ($hash{'display_attrs_8'} == 1);
524: $r->print("<td><b>".&mt("Source Available")."</b></td>\n")
525: if ($hash{'display_attrs_10'} == 1);
526: $r->print("<td><b>".&mt("Linked/Related Resources")."</b></td>\n")
527: if ($hash{'display_attrs_11'} == 1);
528: $r->print("<td><b>".&mt("Resource")."</b></td>\n")
529: if ($hash{'display_attrs_7'} == 1);
530: $r->print('</tr>');
531:
532: # ----------------- read in what directories have previously been set to "open"
533: foreach (keys %hash) {
534: if ($_ =~ /^diropen_status_/) {
535: my $key = $_;
536: $key =~ s/^diropen_status_//;
537: $dirs{$key} = $hash{$_};
538: }
539: }
540:
541: if ($env{'form.openuri'}) { # take care of review and refresh options
542: my $uri=$env{'form.openuri'};
543: if (exists($hash{'diropen_status_'.$uri})) {
544: my $cursta = $hash{'diropen_status_'.$uri};
545: $dirs{$uri} = 'open';
546: $hash{'diropen_status_'.$uri} = 'open';
547: if ($cursta eq 'open') {
548: $dirs{$uri} = 'closed';
549: $hash{'diropen_status_'.$uri} = 'closed';
550: }
551: } else {
552: $hash{'diropen_status_'.$uri} = 'open';
553: $dirs{$uri} = 'open';
554: }
555: }
556:
557: my $toplevel;
558: my $indent = 0;
559: $uri = $uri.'/' if $uri !~ /.*\/$/;
560:
561: if ($env{'form.dirPointer'} ne 'on') {
562: $hash{'top.level'} = $uri;
563: $toplevel = $uri;
564: } else {
565: $toplevel = $hash{'top.level'};
566: }
567:
568: # -------------------------------- if not at top level, provide an uplink arrow
569: if ($toplevel ne '/res/'){
570: my (@uri_com) = split(/\//,$uri);
571: pop @uri_com;
572: my $upone = join('/',@uri_com);
573: my @list = qw (0);
574: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
575: $indent = 1;
576: }
577:
578: # -------- recursively go through all the directories and output as appropriate
579: &scanDir ($r,$toplevel,$indent,\%hash);
580:
581: # ---------------------------- embed hidden information useful for group import
582: $r->print("<form name='fnum'>");
583: $r->print("<input type='hidden' name='fnum' value='$fnum' /></form>");
584:
585: # -------------------------------------------------------------- end the tables
586: $r->print('</table>');
587: $r->print('</td></tr></table>');
588:
589: # --------------------------------------------------- end the output and return
590: $r->print(&Apache::loncommon::end_page()."\n");
591: }
592: if(! $c->aborted()) {
593: # write back into the temporary file
594: my %dbfile;
595: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
596: while (my($key,$value) = each(%hash)) {
597: $dbfile{$key}=$value;
598: }
599: untie(%dbfile);
600: }
601: }
602:
603: return OK;
604: }
605:
606: # ----------------------------------------------- recursive scan of a directory
607: sub scanDir {
608: my ($r,$startdir,$indent,$hashref)=@_;
609: my $c = $r->connection();
610: my ($compuri,$curdir);
611: my $dirptr=16384;
612: my $obs;
613: $indent++;
614: my %dupdirs = %dirs;
615: my @list=&get_list($r,$startdir);
616: foreach my $line (@list) {
617: return if ($c->aborted());
618: #This is a kludge, sorry aboot this
619: my ($strip,$dom,undef,$testdir,undef,undef,undef,undef,undef,undef,undef,undef,undef,undef,$obs,undef)=split(/\&/,$line,16);
620: next if($strip =~ /.*\.meta$/ | $obs eq '1');
621: my (@fileparts) = split(/\./,$strip);
622: if ($hash{'display_attrs_9'} != 1) {
623: # if not all versions to be shown
624: if (scalar(@fileparts) >= 3) {
625: my $fext = pop @fileparts;
626: my $ov = pop @fileparts;
627: my $fname = join ('.',@fileparts,$fext);
628: next if (grep /\Q$fname\E/,@list and $ov =~ /^\d+$/);
629: }
630: }
631:
632: if ($dom eq 'domain') {
633: # dom list has full path /res/<domain name>/ already
634: $curdir='';
635: $compuri = (split(/\&/,$line))[0];
636: } else {
637: # user, dir & file have name only, i.e., w/o path
638: $compuri = join('',$startdir,$strip,'/');
639: $curdir = $startdir;
640: }
641: my $diropen = 'closed';
642: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/) or ($compuri=~/\.(sequence|page)\/$/)) {
643: while (my ($key,$val)= each %dupdirs) {
644: if ($key eq $compuri and $val eq "open") {
645: $diropen = "opened";
646: delete($dupdirs{$key});
647: delete($dirs{$key});
648: }
649: }
650: }
651: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
652: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
653: }
654: $indent--;
655: }
656:
657: # --------------- get complete matched list based on the uri (returns an array)
658: sub get_list {
659: my ($r,$uri)=@_;
660: my @list=();
661: (my $luri = $uri) =~ s/\//_/g;
662: if ($env{'form.updatedisplay'}) {
663: foreach (keys %hash) {
664: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
665: delete $hash{$_} if ($_ =~ /^dirlist_timestamp_files_/);
666: }
667: }
668:
669: if (defined($hash{'dirlist_files_'.$luri}) &&
670: $hash{'dirlist_timestamp_files_'.$luri}+600 > (time)) {
671: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
672: } elsif ($uri=~/\.(page|sequence)\/$/) {
673: # is a page or a sequence
674: $uri=~s/\/$//;
675: $uri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
676: $uri=~s/\/+/\//g;
677: foreach (&Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$uri))) {
678: my @ratpart=split(/\:/,$_);
679: push @list,$ratpart[1];
680: }
681: $hash{'dirlist_files_'.$luri} = join("\n",@list);
682: } else {
683: # is really a directory
684: @list = &Apache::lonnet::dirlist($uri);
685: $hash{'dirlist_files_'.$luri} = join("\n",@list);
686: $hash{'dirlist_timestamp_files_'.$luri} = time;
687: }
688: return @list=&match_ext($r,@list);
689: }
690:
691: sub dynmetaread {
692: my $uri=shift;
693: if (($hash{'display_attrs_8'}==1) || ($hash{'display_attrs_11'}==1)) {
694: # We don't want the filename
695: $uri=~s/\/[^\/]+$//;
696: # Did we already see this?
697: my $builddir=$uri;
698: while ($builddir) {
699: if ($dynread{$builddir}) {
700: return 0;
701: }
702: $builddir=~s/\/[^\/]+$//;
703: }
704: # Actually get the data
705: %dynhash=
706: (%dynhash,&Apache::lonmeta::get_dynamic_metadata_from_sql($uri));
707: # Remember that we got it
708: $dynread{$uri}=1;
709: }
710: }
711:
712: sub initdebug {
713: my $start_page=
714: &Apache::loncommon::start_page('Debug',undef,
715: {'only_body' => 1,});
716: $start_page =~ s/\n/ /g;
717: return <<ENDJS;
718: <script type="text/javascript">
719: var debugging = true;
720: if (debugging) {
721: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
722: }
723:
724: function output(text) {
725: if (debugging) {
726: debuggingWindow.document.writeln(text);
727: }
728: }
729: output('$start_page<pre>');
730: </script>
731: ENDJS
732: }
733:
734: sub writedebug {
735: my ($text) = @_;
736: return "<script type=\"text/javascript\">output('$text');</script>";
737: }
738:
739: # -------------------- filters out files based on extensions (returns an array)
740: sub match_ext {
741: my ($r,@packlist)=@_;
742: my @trimlist;
743: my $nextline;
744: my @fileext;
745: my $dirptr=16384;
746:
747: foreach my $line (@packlist) {
748: chomp $line;
749: $line =~ s/^\/home\/httpd\/html//;
750: my @unpackline = split (/\&/,$line);
751: next if ($unpackline[0] eq '.');
752: next if ($unpackline[0] eq '..');
753: my @filecom = split (/\./,$unpackline[0]);
754: my $fext = pop(@filecom);
755: my $fnptr = ($unpackline[3]&$dirptr) || ($fext=~/\.(page|sequence)$/);
756: if ($fnptr == 0 and $unpackline[3] ne "") {
757: my $embstyle = &Apache::loncommon::fileembstyle($fext);
758: push @trimlist,$line if (defined($embstyle) &&
759: ($embstyle ne 'hdn' or $fext eq 'meta'));
760: } else {
761: push @trimlist,$line;
762: }
763: }
764: @trimlist = sort {uc($a) cmp uc($b)} (@trimlist);
765: return @trimlist;
766: }
767:
768: # ------------------------------- displays one line in appropriate table format
769: sub display_line {
770: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
771: my (@pathfn, $fndir);
772: # there could be relative paths (files actually belonging into this directory)
773: # or absolute paths (for example, from sequences)
774: my $absolute;
775: my $pathprefix;
776: if ($line=~m|^/res/| && $startdir ne '') {
777: $absolute=1;
778: $pathprefix='';
779: } else {
780: $absolute=0;
781: $pathprefix=$startdir;
782: }
783: my $dirptr=16384;
784: my $fileclr="#ffffe6";
785: my $iconpath= $r->dir_config('lonIconsURL') . '/';
786:
787: my @filecom = split (/\&/,$line);
788: my @pathcom = split (/\//,$filecom[0]);
789: my $listname = $pathcom[scalar(@pathcom)-1];
790: my $fnptr = $filecom[3]&$dirptr;
791: my $msg = &mt('View').' '.$filecom[0].' '.&mt('resources');
792: $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
793:
794: my $tabtag='</td>';
795: my $i=0;
796: while ($i<=11) {
797: $tabtag=join('',$tabtag,"<td> </td>")
798: if $hash{'display_attrs_'.$i} == 1;
799: $i++;
800: }
801: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
802:
803: # display uplink arrow
804: if ($filecom[1] eq 'viewOneUp') {
805: my $updir=$startdir;
806: # -------------- Filter out sequence containment in crumbs and "recent folders"
807: $updir='/'.(split(/\.(page|sequence)\/\//,$startdir))[-1];
808: $updir=~s/\/+/\//g;
809:
810: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
811: $r->print("<td>\n");
812: $r->print ('<form method="post" name="dirpathUP" action="'.$updir.
813: '/" '.
814: 'onSubmit="return rep_dirpath(\'UP\','.
815: 'document.forms.fileattr.acts.value)" '.
816: 'enctype="application/x-www-form-urlencoded"'.
817: '>'."\n");
818: $r->print ('<input type=hidden name=openuri value="'.
819: $startdir.'" />'."\n");
820: $r->print ('<input type="hidden" name="acts" value="" />'."\n");
821: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
822: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
823: "\n");
824: $r->print(&mt("Up")."</form>$tabtag</tr>\n");
825: return OK;
826: }
827: # Do we have permission to look at this?
828:
829: if($filecom[15] ne '1') { return OK if (!&Apache::lonnet::allowed('bre',$pathprefix.$filecom[0])); }
830:
831: # make absolute links appear on different background
832: if ($absolute) { $fileclr='#ccdd99'; }
833:
834: # display domain
835: if ($filecom[1] eq 'domain') {
836: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n")
837: if ($env{'form.dirPointer'} eq "on");
838: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
839: $r->print("<td>");
840: &begin_form ($r,$filecom[0]);
841: my $anchor = $filecom[0];
842: $anchor =~ s/\///g;
843: $r->print ('<a name="'.$anchor.'">');
844: $r->print ('<input type="hidden" name="acts" value="" />');
845: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
846: $diropen.'.gif"');
847: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
848: "\n");
849: my $quotable_filecom = &Apache::loncommon::escape_single($filecom[0]);
850: $r->print ('<a href="javascript:gothere(\''.$quotable_filecom.
851: '\')"><img src="'.$iconpath.'server.gif"');
852: $r->print (' border="0" /></a>'."\n");
853: $r->print (&mt("Domain")." - $listname ");
854: if ($Apache::lonnet::domaindescription{$listname}) {
855: $r->print("(".$Apache::lonnet::domaindescription{$listname}.
856: ")");
857: }
858: $r->print ("</form>$tabtag</tr>\n");
859: return OK;
860:
861: # display user directory
862: }
863: if ($filecom[1] eq 'user') {
864: $r->print("<tr valign=$valign bgcolor=$fileclr>$extrafield");
865: $r->print("<td nowrap>\n");
866: my $curdir = $startdir.$filecom[0].'/';
867: my $anchor = $curdir;
868: $anchor =~ s/\///g;
869: &begin_form ($r,$curdir);
870: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
871: 'whitespace1.gif" border="0" />'."\n");
872: $r->print ('<input type="hidden" name="acts" value="" />');
873: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
874: '.gif"');
875: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
876: "\n");
877: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
878: $r->print ('<a href="javascript:gothere(\''.$quotable_curdir
879: .'\')"><img src='.
880: $iconpath.'quill.gif border="0" name="'.$msg.
881: '" height="22" /></a>');
882: my $domain=(split(m|/|,$startdir))[2];
883: my $plainname=&Apache::loncommon::plainname($listname,$domain);
884: $r->print ($listname);
885: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
886: $r->print ('</form>'.$tabtag.'</tr>'."\n");
887: return OK;
888: }
889:
890: # display file
891: if (($fnptr == 0 and $filecom[3] ne '') or $absolute) {
892: my $filelink = $pathprefix.$filecom[0];
893: my @file_ext = split (/\./,$listname);
894: my $curfext = $file_ext[-1];
895: if (@Omit) {
896: foreach (@Omit) { return OK if ($curfext eq $_); }
897: }
898: if (@Only) {
899: my $skip = 1;
900: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
901: return OK if ($skip > 0);
902: }
903: # Set the icon for the file
904: my $iconname = &Apache::loncommon::icon($listname);
905: $r->print("<tr valign='$valign' bgcolor=$fileclr><td nowrap='nowrap' valign='top'>");
906:
907: if ($env{'form.catalogmode'} eq 'interactive') {
908: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
909: $r->print("<a href=\"javascript:select_data(\'",
910: $quotable_filelink,"')\">");
911: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
912: "\n");
913: $r->print("</td><td nowrap>");
914: } elsif ($env{'form.catalogmode'} eq 'groupimport') {
915: $r->print("<form name='form$fnum'>\n");
916: $r->print("<input type='checkbox' name='filelink"."' ".
917: "value='$filelink' onClick='".
918: "javascript:queue(\"form$fnum\")' ");
919: if ($hash{'store_'.$filelink}) {
920: $r->print("checked");
921: }
922: $r->print(" />\n");
923: $r->print("</form></td><td nowrap>");
924: $hash{"pre_${fnum}_link"}=$filelink;
925: $fnum++;
926: }
927: # Form to open or close sequences
928: if ($filelink=~/\.(page|sequence)$/) {
929: my $curdir = $startdir.$filecom[0].'/';
930: my $anchor = $curdir;
931: $anchor =~ s/\///g;
932: &begin_form($r,$curdir);
933: $indent--;
934: }
935: # General indentation
936: if ($indent > 0 and $indent < 11) {
937: $r->print("<img src=",$iconpath,"whitespace",$indent,
938: ".gif border='0' />\n");
939: } elsif ($indent >0) {
940: my $ten = int($indent/10.);
941: my $rem = $indent%10.0;
942: my $count = 0;
943: while ($count < $ten) {
944: $r->print("<img src=",$iconpath,
945: "whitespace10.gif border='0' />\n");
946: $count++;
947: }
948: $r->print("<img src=",$iconpath,"whitespace",$rem,
949: ".gif border='0' />\n") if $rem > 0;
950: }
951: # Sequence open/close icon
952: if ($filelink=~/\.(page|sequence)$/) {
953: my $curdir = $startdir.$filecom[0].'/';
954: my $anchor = $curdir;
955: $anchor =~ s/\///g;
956: $r->print ('<input type="hidden" name="acts" value="" />');
957: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
958: 'folder_pointer_'.$diropen.'.gif"');
959: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
960: "\n");
961: }
962: # Filetype icons
963: $r->print("<img src='$iconname' border='0' />\n");
964: my $quotable_filelink = &Apache::loncommon::escape_single($filelink);
965:
966:
967: $r->print (" <a href=\"javascript:openWindow('".$quotable_filelink.
968: "', 'previewfile', '450', '500', 'no', 'yes','yes')\";".
969: " TARGET=_self>$listname</a> ");
970:
971: $r->print (" (<a href=\"javascript:openWindow('".$quotable_filelink.
972: ".meta', 'metadatafile', '500', '550', 'no', 'yes','no')\"; ".
973: "TARGET=_self>metadata</a>) ");
974: # Close form to open/close sequence
975: if ($filelink=~/\.(page|sequence)$/) {
976: $r->print('</form>');
977: }
978: $r->print("</td>\n");
979: if ($hash{'display_attrs_0'} == 1) {
980: my $title = &Apache::lonnet::gettitle($filelink,'title');
981: $r->print('<td> '.($title eq '' ? ' ' : $title).
982: ' </td>'."\n");
983: }
984: $r->print('<td align=right> ',
985: $filecom[8]," </td>\n")
986: if $hash{'display_attrs_1'} == 1;
987: $r->print('<td> '.
988: (localtime($filecom[9]))." </td>\n")
989: if $hash{'display_attrs_2'} == 1;
990: $r->print('<td> '.
991: (localtime($filecom[10]))." </td>\n")
992: if $hash{'display_attrs_3'} == 1;
993:
994: if ($hash{'display_attrs_4'} == 1) {
995: my $author = &Apache::lonnet::metadata($filelink,'author');
996: $r->print('<td> '.($author eq '' ? ' ' : $author).
997: " </td>\n");
998: }
999: if ($hash{'display_attrs_5'} == 1) {
1000: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1001: # $keywords = ' ' if (!$keywords);
1002: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1003: " </td>\n");
1004: }
1005: #'
1006:
1007: if ($hash{'display_attrs_6'} == 1) {
1008: my $lang = &Apache::lonnet::metadata($filelink,'language');
1009: $lang = &Apache::loncommon::languagedescription($lang);
1010: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1011: " </td>\n");
1012: }
1013: if ($hash{'display_attrs_8'} == 1) {
1014: # statistics
1015: &dynmetaread($filelink);
1016: $r->print("<td>");
1017: &dynmetaprint($r,$filelink,'count');
1018: &dynmetaprint($r,$filelink,'course');
1019: &dynmetaprint($r,$filelink,'stdno');
1020: &dynmetaprint($r,$filelink,'avetries');
1021: &dynmetaprint($r,$filelink,'difficulty');
1022: &dynmetaprint($r,$filelink,'disc');
1023: &dynmetaprint($r,$filelink,'clear');
1024: &dynmetaprint($r,$filelink,'technical');
1025: &dynmetaprint($r,$filelink,'correct');
1026: &dynmetaprint($r,$filelink,'helpful');
1027: &dynmetaprint($r,$filelink,'depth');
1028: $r->print(" </td>\n");
1029:
1030: }
1031: if ($hash{'display_attrs_10'} == 1) {
1032: my $source = &Apache::lonnet::metadata($filelink,'sourceavail');
1033: if($source eq 'open') {
1034: my $sourcelink = &Apache::lonsource::make_link($filelink,$listname);
1035: my $quotable_sourcelink = &Apache::loncommon::escape_single($sourcelink);
1036: $r->print('<td>'."<a href=\"javascript:openWindow('"
1037: .$quotable_sourcelink.
1038: "', 'previewsource', '700', '700', 'no', 'yes','yes')\";".
1039: " TARGET=_self>Yes</a> "."</td>\n");
1040: } else { #A cuddled else. :P
1041: $r->print("<td> </td>\n");
1042: }
1043: }
1044: if ($hash{'display_attrs_11'} == 1) {
1045: # links
1046: &dynmetaread($filelink);
1047: $r->print('<td>');
1048: &dynmetaprint($r,$filelink,'goto_list');
1049: &dynmetaprint($r,$filelink,'comefrom_list');
1050: &dynmetaprint($r,$filelink,'sequsage_list');
1051: &dynmetaprint($r,$filelink,'dependencies');
1052: &dynmetaprint($r,$filelink,'course_list');
1053: $r->print('</td>');
1054: }
1055: if ($hash{'display_attrs_7'} == 1) {
1056: # Show resource
1057: my $output=&showpreview($filelink);
1058: $r->print('<td> '.($output eq '' ? ' ':$output).
1059: " </td>\n");
1060: }
1061: $r->print("</tr>\n");
1062: }
1063:
1064: # -- display directory
1065: if ($fnptr == $dirptr) {
1066: my $curdir = $startdir.$filecom[0].'/';
1067: my $anchor = $curdir;
1068: $anchor =~ s/\///g;
1069: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=$valign>");
1070: &begin_form ($r,$curdir);
1071: my $indentm1 = $indent-1;
1072: if ($indentm1 < 11 and $indentm1 > 0) {
1073: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
1074: ".gif border='0' />\n");
1075: } else {
1076: my $ten = int($indentm1/10.);
1077: my $rem = $indentm1%10.0;
1078: my $count = 0;
1079: while ($count < $ten) {
1080: $r->print ("<img src=",$iconpath
1081: ,"whitespace10.gif border='0' />\n");
1082: $count++;
1083: }
1084: $r->print ("<img src=",$iconpath,"whitespace",$rem,
1085: ".gif border='0' />\n") if $rem > 0;
1086: }
1087: $r->print ('<input type="hidden" name="acts" value="" />');
1088: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
1089: 'folder_pointer_'.$diropen.'.gif"');
1090: $r->print (' name="'.$msg.'" height="22" type="image" border="0" />'.
1091: "\n");
1092: my $quotable_curdir = &Apache::loncommon::escape_single($curdir);
1093: $r->print ('<a href="javascript:gothere(\''
1094: .$quotable_curdir.'\')"><img src="'.
1095: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
1096: "\n");
1097: $r->print ("$listname</td>\n");
1098: # Attributes
1099: my $filelink = $startdir.$filecom[0].'/default';
1100:
1101: if ($hash{'display_attrs_0'} == 1) {
1102: my $title = &Apache::lonnet::gettitle($filelink,'title');
1103: $r->print('<td> '.($title eq '' ? ' ' : $title).
1104: ' </td>'."\n");
1105: }
1106: $r->print('<td align=right> ',
1107: $filecom[8]," </td>\n")
1108: if $hash{'display_attrs_1'} == 1;
1109: $r->print('<td> '.
1110: (localtime($filecom[9]))." </td>\n")
1111: if $hash{'display_attrs_2'} == 1;
1112: $r->print('<td> '.
1113: (localtime($filecom[10]))." </td>\n")
1114: if $hash{'display_attrs_3'} == 1;
1115:
1116: if ($hash{'display_attrs_4'} == 1) {
1117: my $author = &Apache::lonnet::metadata($filelink,'author');
1118: $r->print('<td> '.($author eq '' ? ' ' : $author).
1119: " </td>\n");
1120: }
1121: if ($hash{'display_attrs_5'} == 1) {
1122: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1123: # $keywords = ' ' if (!$keywords);
1124: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1125: " </td>\n");
1126: }
1127: if ($hash{'display_attrs_6'} == 1) {
1128: my $lang = &Apache::lonnet::metadata($filelink,'language');
1129: $lang = &Apache::loncommon::languagedescription($lang);
1130: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1131: " </td>\n");
1132: }
1133: if ($hash{'display_attrs_8'} == 1) {
1134: $r->print('<td> </td>');
1135: }
1136: if ($hash{'display_attrs_10'} == 1) {
1137: $r->print('<td> </td>');
1138: }
1139: if ($hash{'display_attrs_11'} == 1) {
1140: $r->print('<td> </td>');
1141: }
1142: if ($hash{'display_attrs_7'} == 1) {
1143: $r->print('<td> </td>');
1144: }
1145: $r->print('</form></tr>');
1146: }
1147:
1148: }
1149:
1150: sub showpreview {
1151: my ($filelink)=@_;
1152: my ($curfext)=($filelink=~/\.(\w+)$/);
1153: my $output='';
1154: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
1155: if ($embstyle eq 'ssi') {
1156: my $cache=$Apache::lonnet::perlvar{'lonDocRoot'}.$filelink.
1157: '.tmp';
1158: if ((!$env{'form.updatedisplay'}) &&
1159: (-e $cache)) {
1160: open(FH,$cache);
1161: $output=join("\n",<FH>);
1162: close(FH);
1163: } else {
1164: $output=&Apache::lonnet::ssi_body($filelink);
1165: if ($output=~/LONCAPAACCESSCONTROLERRORSCREEN/s) {
1166: $output='';
1167: } else {
1168: open(FH,">$cache");
1169: print FH $output;
1170: close(FH);
1171: }
1172: }
1173: $output='<font size="-2">'.$output.'</font>';
1174: } elsif ($embstyle eq 'img') {
1175: $output='<img src="'.$filelink.'" />';
1176: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
1177: $output='<img src="http://'.
1178: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
1179: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
1180: }
1181: return $output;
1182: }
1183:
1184: sub dynmetaprint {
1185: my ($r,$filelink,$item)=@_;
1186: if ($dynhash{$filelink}->{$item}) {
1187: $r->print("\n<br />".$fieldnames{$item}.': '.
1188: &Apache::lonmeta::prettyprint($item,
1189: $dynhash{$filelink}->{$item},
1190: (($env{'form.catalogmode'} ne 'groupimport')?'preview':''),
1191: '',
1192: (($env{'form.catalogmode'} eq 'groupimport')?'document.forms.fileattr':''),1));
1193: }
1194: }
1195:
1196: # ------------------- prints the beginning of a form for directory or file link
1197: sub begin_form {
1198: my ($r,$uri) = @_;
1199: my $anchor = $uri;
1200: $anchor =~ s/\///g;
1201: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
1202: '#'.$anchor.
1203: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
1204: ',document.forms.fileattr.acts.value)" '.
1205: 'enctype="application/x-www-form-urlencoded">'."\n");
1206: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'" />'.
1207: "\n");
1208: $r->print ('<input type="hidden" name="dirPointer" value="on" />'."\n");
1209: $dnum++;
1210: }
1211:
1212: # --------- settings whenever the user causes the indexer window to be launched
1213: sub start_fresh_session {
1214: delete $hash{'form.catalogmode'};
1215: delete $hash{'form.mode'};
1216: delete $hash{'form.form'};
1217: delete $hash{'form.element'};
1218: delete $hash{'form.omit'};
1219: delete $hash{'form.only'};
1220: foreach (keys %hash) {
1221: delete $hash{$_} if (/^(pre_|store)/);
1222: }
1223: }
1224:
1225: # ------------------------------------------------------------------- setvalues
1226: sub setvalues {
1227: # setvalues is used in registerurl to synchronize the database
1228: # hash and environment hashes
1229: my ($H1,$h1key,$H2,$h2key) =@_;
1230: #
1231: if (exists $H2->{$h2key}) {
1232: $H1->{$h1key} = $H2->{$h2key};
1233: } elsif (exists $H1->{$h1key}) {
1234: $H2->{$h2key} = $H1->{$h1key};
1235: }
1236: }
1237:
1238: 1;
1239:
1240: sub cleanup {
1241: if (tied(%hash)){
1242: &Apache::lonnet::logthis('Cleanup indexer: hash');
1243: }
1244: return OK;
1245: }
1246:
1247:
1248:
1249:
1250:
1251: =head1 NAME
1252:
1253: Apache::lonindexer - mod_perl module for cross server filesystem browsing
1254:
1255: =head1 SYNOPSIS
1256:
1257: Invoked by /etc/httpd/conf/srm.conf:
1258:
1259: <LocationMatch "^/res.*/$">
1260: SetHandler perl-script
1261: PerlHandler Apache::lonindexer
1262: </LocationMatch>
1263:
1264: =head1 INTRODUCTION
1265:
1266: This module enables a scheme of browsing across a cross server.
1267:
1268: This is part of the LearningOnline Network with CAPA project
1269: described at http://www.lon-capa.org.
1270:
1271: =head1 BEGIN SUBROUTINE
1272:
1273: This routine is only run once after compilation.
1274:
1275: =over 4
1276:
1277: =item *
1278:
1279: Initializes %language hash table.
1280:
1281: =back
1282:
1283: =head1 HANDLER SUBROUTINE
1284:
1285: This routine is called by Apache and mod_perl.
1286:
1287: =over 4
1288:
1289: =item *
1290:
1291: read in machine configuration variables
1292:
1293: =item *
1294:
1295: see if called from an interactive mode
1296:
1297: =item *
1298:
1299: refresh environment with user database values (in %hash)
1300:
1301: =item *
1302:
1303: define extra fields and buttons in case of special mode
1304:
1305: =item *
1306:
1307: set catalogmodefunctions to have extra needed javascript functionality
1308:
1309: =item *
1310:
1311: print header
1312:
1313: =item *
1314:
1315: evaluate actions from previous page (both cumulatively and chronologically)
1316:
1317: =item *
1318:
1319: output title
1320:
1321: =item *
1322:
1323: get state of file attributes to be showing
1324:
1325: =item *
1326:
1327: output state of file attributes to be showing
1328:
1329: =item *
1330:
1331: output starting row to the indexed file/directory hierarchy
1332:
1333: =item *
1334:
1335: read in what directories have previously been set to "open"
1336:
1337: =item *
1338:
1339: if not at top level, provide an uplink arrow
1340:
1341: =item *
1342:
1343: recursively go through all the directories and output as appropriate
1344:
1345: =item *
1346:
1347: information useful for group import
1348:
1349: =item *
1350:
1351: end the tables
1352:
1353: =item *
1354:
1355: end the output and return
1356:
1357: =back
1358:
1359: =head1 OTHER SUBROUTINES
1360:
1361: =over 4
1362:
1363: =item *
1364:
1365: scanDir - recursive scan of a directory
1366:
1367: =item *
1368:
1369: get_list - get complete matched list based on the uri (returns an array)
1370:
1371: =item *
1372:
1373: match_ext - filters out files based on extensions (returns an array)
1374:
1375: =item *
1376:
1377: display_line - displays one line in appropriate table format
1378:
1379: =item *
1380:
1381: begin_form - prints the beginning of a form for directory or file link
1382:
1383: =item *
1384:
1385: start_fresh_session - settings whenever the user causes the indexer window
1386: to be launched
1387:
1388: =back
1389:
1390: =cut
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