1: # The LearningOnline Network with CAPA
2: # Directory Indexer
3: #
4: # $Id: lonindexer.pm,v 1.106 2004/05/11 13:22:41 matthew 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 GDBM_File;
56:
57: # ---------------------------------------- variables used throughout the module
58: my %hash; # global user-specific gdbm file
59: my %dirs; # keys are directories, values are the open/close status
60: my %language; # has the reference information present in language.tab
61:
62: # ----- Values which are set by the handler subroutine and are accessible to
63: # ----- other methods.
64: my $extrafield; # default extra table cell
65: my $fnum; # file counter
66: my $dnum; # directory counter
67:
68: # ----- Used to include or exclude files with certain extensions.
69: my @Only = ();
70: my @Omit = ();
71:
72:
73: # ----------------------------- Handling routine called via Apache and mod_perl
74: sub handler {
75: my $r = shift;
76: my $c = $r->connection();
77: &Apache::loncommon::content_type($r,'text/html');
78: &Apache::loncommon::no_cache($r);
79: $r->send_http_header;
80: return OK if $r->header_only;
81: $fnum=0;
82: $dnum=0;
83:
84: # Deal with stupid global variables (is there a way around making
85: # these global to this package? It is just so wrong....)
86: undef (@Only);
87: undef (@Omit);
88:
89: # ------------------------------------- read in machine configuration variables
90: my $iconpath= $r->dir_config('lonIconsURL') . "/";
91: my $domain = $r->dir_config('lonDefDomain');
92: my $role = $r->dir_config('lonRole');
93: my $loadlim = $r->dir_config('lonLoadLim');
94: my $servadm = $r->dir_config('lonAdmEMail');
95: my $sysadm = $r->dir_config('lonSysEMail');
96: my $lonhost = $r->dir_config('lonHostID');
97: my $tabdir = $r->dir_config('lonTabDir');
98:
99: my $fileclr='#ffffe6';
100: my $line;
101: my (@attrchk,@openpath);
102: my $uri=$r->uri;
103:
104: # -------------------------------------- see if called from an interactive mode
105: # Get the parameters from the query string
106: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
107: ['catalogmode','launch','acts','mode','form','element',
108: 'only','omit','titleelement']);
109: #-------------------------------------------------------------------
110: my $closebutton='';
111: my $groupimportbutton='';
112: my $colspan='';
113:
114: $extrafield='';
115: my $diropendb =
116: "/home/httpd/perl/tmp/$ENV{'user.domain'}_$ENV{'user.name'}_indexer.db";
117: %hash = ();
118: {
119: my %dbfile;
120: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_READER(),0640)) {
121: while(my($key,$value)=each(%dbfile)) {
122: $hash{$key}=$value;
123: }
124: untie(%dbfile);
125: }
126: }
127: {
128: if ($ENV{'form.launch'} eq '1') {
129: &start_fresh_session();
130: }
131: #Hijack lonindexer to verify a title and be close down.
132: if ($ENV{'form.launch'} eq '2') {
133: #$r->content_type('text/html');
134: my $verify_title = &Apache::lonnet::gettitle($ENV{'form.acts'});
135: $r->print(<<ENDSUBM);
136: <html>
137: <script type="text/javascript">
138: function load() {
139: window.opener.document.forms["$ENV{'form.form'}"].elements["$ENV{'form.element'}"].value='$ENV{'form.acts'}';
140: window.opener.document.forms["$ENV{'form.form'}"].elements["$ENV{'form.titleelement'}"].value='$verify_title';
141: window.close();
142: }
143: </script>
144: <body onLoad=load();>
145: </body>
146: </html>
147: ENDSUBM
148: return OK;
149: }
150:
151: # -------------------- refresh environment with user database values (in %hash)
152: &setvalues(\%hash,'form.catalogmode',\%ENV,'form.catalogmode' );
153:
154: # --------------------- define extra fields and buttons in case of special mode
155: if ($ENV{'form.catalogmode'} eq 'interactive') {
156: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
157: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
158: ' border="0" /></td>';
159: $colspan=" colspan='2' ";
160: my $cl=&mt('Close');
161: $closebutton=<<END;
162: <input type="button" name="close" value='$cl' onClick="self.close()">
163: END
164: }
165: elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
166: $extrafield='<td bgcolor="'.$fileclr.'" valign="bottom">'.
167: '<a name="$anchor"><img src="'.$iconpath.'whitespace1.gif"'.
168: ' border="0" /></td>';
169: $colspan=" colspan='2' ";
170: my $cl=&mt('Close');
171: my $gi=&mt('Group Import');
172: $closebutton=<<END;
173: <input type="button" name="close" value='$cl' onClick="self.close()">
174: END
175: $groupimportbutton=<<END;
176: <input type="button" name="groupimport" value='$gi'
177: onClick="javascript:select_group()">
178: END
179: }
180: # Additions made by Matthew to make the browser a little easier to deal
181: # with in the future.
182: #
183: # $mode (at this time) indicates if we are in edit mode.
184: # $form is the name of the form that the URL is placed when the
185: # selection is made.
186: # $element is the name of the element in $formname which receives
187: # the URL.
188: #&Apache::lonxml::debug('Checking mode, form, element');
189: &setvalues(\%hash,'form.mode' ,\%ENV,'form.mode' );
190: &setvalues(\%hash,'form.form' ,\%ENV,'form.form' );
191: &setvalues(\%hash,'form.element' ,\%ENV,'form.element');
192: &setvalues(\%hash,'form.titleelement',\%ENV,'form.titleelement');
193: &setvalues(\%hash,'form.only' ,\%ENV,'form.only' );
194: &setvalues(\%hash,'form.omit' ,\%ENV,'form.omit' );
195:
196: # Deal with 'omit' and 'only'
197: if (exists $ENV{'form.omit'}) {
198: @Omit = split(',',$ENV{'form.omit'});
199: }
200: if (exists $ENV{'form.only'}) {
201: @Only = split(',',$ENV{'form.only'});
202: }
203:
204: my $mode = $ENV{'form.mode'};
205: my ($form,$element,$titleelement);
206: if ($mode eq 'edit' || $mode eq 'parmset') {
207: $form = $ENV{'form.form'};
208: $element = $ENV{'form.element'};
209: $titleelement = $ENV{'form.titleelement'};
210: }
211: #&Apache::lonxml::debug("mode=$mode form=$form element=$element titleelement=$titleelement");
212: # ------ set catalogmodefunctions to have extra needed javascript functionality
213: my $catalogmodefunctions='';
214: if ($ENV{'form.catalogmode'} eq 'interactive' or
215: $ENV{'form.catalogmode'} eq 'groupimport') {
216: # The if statement below sets us up to use the old version
217: # by default (ie. if $mode is undefined). This is the easy
218: # way out. Hopefully in the future I'll find a way to get
219: # the calls dealt with in a more comprehensive manner.
220:
221: #
222: # There is now also mode "simple", which is for the simple version of the rat
223: #
224: #
225: if (!defined($mode) || ($mode ne 'edit' && $mode ne 'parmset')) {
226: my $location = "/adm/groupsort?catalogmode=groupimport&";
227: $location .= "mode=".$mode."&";
228: $location .= "acts=";
229: $catalogmodefunctions=<<"END";
230: function select_data(title,url) {
231: changeTitle(title);
232: changeURL(url);
233: self.close();
234: }
235: function select_group() {
236: window.location="$location"+document.forms.fileattr.acts.value;
237: }
238: function changeTitle(val) {
239: if (opener.inf) {
240: if (opener.inf.document.forms.resinfo.elements.t) {
241: opener.inf.document.forms.resinfo.elements.t.value=val;
242: }
243: }
244: }
245: function changeURL(val) {
246: if (opener.inf) {
247: if (opener.inf.document.forms.resinfo.elements.u) {
248: opener.inf.document.forms.resinfo.elements.u.value=val;
249: }
250: }
251: }
252: END
253: } elsif ($mode eq 'edit') { # we are in 'edit' mode
254: my $location = "/adm/groupsort?catalogmode=interactive&";
255: $location .= "form=$form&element=$element&mode=edit&acts=";
256: $catalogmodefunctions=<<END;
257: // mode = $mode
258: function select_data(title,url) {
259: var location = "/res/?launch=2&form=$form&element=$element&titleelement=$titleelement&acts=" + url;
260: window.location=location;
261: }
262: function select_group() {
263: window.location="$location"+document.forms.fileattr.acts.value;
264: }
265:
266: function changeURL(val) {
267: if (window.opener.document) {
268: window.opener.document.forms["$form"].elements["$element"].value=val;
269: } else {
270: alert("The file you selected is: "+val);
271: }
272: }
273: END
274: if (!$titleelement) {
275: $catalogmodefunctions.='function changeTitle(val) {}';
276: } else {
277: $catalogmodefunctions.=<<END;
278: function changeTitle(val) {
279: if (window.opener.document) {
280: window.opener.document.forms["$form"].elements["$titleelement"].value=val;
281: } else {
282: alert("The title of the file you selected is: "+val);
283: }
284: }
285: END
286: }
287: } elsif ($mode eq 'parmset') {
288: my $location = "/adm/groupsort?catalogmode=interactive&";
289: $location .= "form=$form&element=$element&mode=parmset&acts=";
290: $catalogmodefunctions=<<END;
291: // mode = $mode
292: function select_data(title,url) {
293: changeURL(url);
294: self.close();
295: }
296:
297: function select_group() {
298: window.location="$location"+document.forms.fileattr.acts.value;
299: }
300:
301: function changeURL(val) {
302: if (window.opener.document) {
303: var elementname = "$element"+"_value";
304: var checkboxname = "$element"+"_setparmval";
305: window.opener.document.forms["$form"].elements[elementname].value=val;
306: window.opener.document.forms["$form"].elements[checkboxname].checked=true;
307: } else {
308: alert("The file you selected is: "+val);
309: }
310: }
311:
312: END
313: }
314: }
315: $catalogmodefunctions.=<<END;
316: var acts='';
317: function rep_dirpath(suffix,val) {
318: eval("document.forms.dirpath"+suffix+".acts.value=val");
319: }
320: END
321: if ($ENV{'form.catalogmode'} eq 'groupimport') {
322: $catalogmodefunctions.=<<END;
323: function queue(val) {
324: if (eval("document.forms."+val+".filelink.checked")) {
325: var l=val.length;
326: var v=val.substring(4,l);
327: document.forms.fileattr.acts.value+='1a'+v+'b';
328: }
329: else {
330: var l=val.length;
331: var v=val.substring(4,l);
332: document.forms.fileattr.acts.value+='0a'+v+'b';
333: }
334: }
335: END
336: }
337:
338: # ---------------------------------------------------------------- Print Header
339: $r->print(<<ENDHEADER);
340: <html>
341: <head>
342: <title>The LearningOnline Network With CAPA Directory Browser</title>
343:
344: <script type="text/javascript">
345: $catalogmodefunctions
346: function openWindow(url, wdwName, w, h, toolbar,scrollbar,locationbar) {
347: var xpos = (screen.width-w)/2;
348: xpos = (xpos < 0) ? '0' : xpos;
349: var ypos = (screen.height-h)/2-30;
350: ypos = (ypos < 0) ? '0' : ypos;
351: var options = "width=" + w + ",height=" + h + ",screenx="+xpos+",screeny="+ypos+",";
352: options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
353: options += "menubar=no,toolbar="+toolbar+",location="+locationbar+",directories=no";
354: var newWin = window.open(url, wdwName, options);
355: newWin.focus();
356: }
357: function gothere(val) {
358: window.location=val+'?acts='+document.forms.fileattr.acts.value;
359: }
360: </script>
361:
362: </head>
363: ENDHEADER
364: my ($headerdom)=($uri=~/^\/res\/(\w+)\//);
365: $r->print(&Apache::loncommon::bodytag('Browse Resources',undef,undef,undef,
366: $headerdom));
367: # - Evaluate actions from previous page (both cumulatively and chronologically)
368: if ($ENV{'form.catalogmode'} eq 'groupimport') {
369: my $acts=$ENV{'form.acts'};
370: my @Acts=split(/b/,$acts);
371: my %ahash;
372: my %achash;
373: my $ac=0;
374: # some initial hashes for working with data
375: foreach (@Acts) {
376: my ($state,$ref)=split(/a/);
377: $ahash{$ref}=$state;
378: $achash{$ref}=$ac;
379: $ac++;
380: }
381: # sorting through the actions and changing the global database hash
382: foreach (sort {$achash{$a}<=>$achash{$b}} (keys %ahash)) {
383: my $key=$_;
384: if ($ahash{$key} eq '1') {
385: $hash{'store_'.$hash{'pre_'.$key.'_link'}}=
386: $hash{'pre_'.$key.'_title'};
387: $hash{'storectr_'.$hash{'pre_'.$key.'_link'}}=
388: $hash{'storectr'}+0;
389: $hash{'storectr'}++;
390: }
391: if ($ahash{$key} eq '0') {
392: if ($hash{'store_'.$hash{'pre_'.$key.'_link'}}) {
393: delete $hash{'store_'.$hash{'pre_'.$key.'_link'}};
394: }
395: }
396: }
397: # deleting the previously cached listing
398: foreach (keys %hash) {
399: if ($_ =~ /^pre_/ && $_ =~/link$/) {
400: my $key = $_;
401: $key =~ s/^pre_//;
402: $key =~ s/_[^_]*$//;
403: delete $hash{'pre_'.$key.'_title'};
404: delete $hash{'pre_'.$key.'_link'};
405: }
406: }
407: }
408:
409: # ---------------------------------- get state of file attributes to be showing
410: if ($ENV{'form.attrs'}) {
411: for (my $i=0; $i<=9; $i++) {
412: delete $hash{'display_attrs_'.$i};
413: if ($ENV{'form.attr'.$i} == 1) {
414: $attrchk[$i] = 'checked';
415: $hash{'display_attrs_'.$i} = 1;
416: }
417: }
418: } else {
419: for (my $i=0; $i<=9; $i++) {
420: $attrchk[$i] = 'checked' if $hash{'display_attrs_'.$i} == 1;
421: }
422: }
423:
424: # ------------------------------- output state of file attributes to be showing
425: # All versions has to the last item
426: # since it does not take an extra col
427: my %lt=&Apache::lonlocal::texthash(
428: 'ti' => 'Title',
429: 'si' => 'Size',
430: 'la' => 'Last access',
431: 'lm' => 'Last modified',
432: 'st' => 'Statistics',
433: 'au' => 'Author',
434: 'kw' => 'Keywords',
435: 'ln' => 'Language',
436: 'sr' => 'Show resource',
437: 'av' => 'All versions',
438: 'ud' => 'Update Display'
439: );
440: my $Displayfileattributes=&mt('Display file attributes');
441: $r->print(<<END);
442: <form method="post" name="fileattr" action="$uri"
443: enctype="application/x-www-form-urlencoded">
444: <b><font color="#666666">$Displayfileattributes</font></b><br />
445: <table border=0><tr>
446: <td><input type="checkbox" name="attr0" value="1" $attrchk[0] onClick="this.form.submit();" /> $lt{'ti'}</td>
447: <td><input type="checkbox" name="attr1" value="1" $attrchk[1] onClick="this.form.submit();" /> $lt{'si'}</td>
448: <td><input type="checkbox" name="attr2" value="1" $attrchk[2] onClick="this.form.submit();" /> $lt{'la'}</td>
449: <td><input type="checkbox" name="attr3" value="1" $attrchk[3] onClick="this.form.submit();" /> $lt{'lm'}</td>
450: <td><input type="checkbox" name="attr8" value="1" $attrchk[8] onClick="this.form.submit();" /> $lt{'st'}</td>
451: </tr><tr>
452: <td><input type="checkbox" name="attr4" value="1" $attrchk[4] onClick="this.form.submit();" /> $lt{'au'}</td>
453: <td><input type="checkbox" name="attr5" value="1" $attrchk[5] onClick="this.form.submit();" /> $lt{'kw'}</td>
454: <td><input type="checkbox" name="attr6" value="1" $attrchk[6] onClick="this.form.submit();" /> $lt{'ln'}</td>
455: <td><input type="checkbox" name="attr7" value="1" $attrchk[7] onClick="this.form.submit();" /> $lt{'sr'}</td>
456: <td><input type="checkbox" name="attr9" value="1" $attrchk[9] onClick="this.form.submit();" /> $lt{'av'}</td>
457: <td> </td>
458: </tr></table>
459: <input type="hidden" name="attrs" value="1" />
460: <input type="submit" name="updatedisplay" value="$lt{'ud'}" />
461: <input type="hidden" name="acts" value="" />
462: $closebutton $groupimportbutton
463: END
464: # -------------- Filter out sequence containment in crumbs and "recent folders"
465: my $storeuri=$uri;
466: $storeuri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
467: $storeuri=~s/\/+/\//g;
468: # ---------------------------------------------------------------- Bread crumbs
469: $r->print(&Apache::lonhtmlcommon::crumbs($storeuri,'','',
470: (($ENV{'form.catalogmode'} eq 'groupimport')?
471: 'document.forms.fileattr':'')).
472: &Apache::lonhtmlcommon::select_recent('residx','resrecent',
473: 'this.form.action=this.form.resrecent.options[this.form.resrecent.selectedIndex].value;this.form.submit();'));
474: # -------------------------------------------------------- Resource Home Button
475: my $reshome=$ENV{'course.'.$ENV{'request.course.id'}.'.reshome'};
476: if ($reshome) {
477: $r->print("<font size='+2'><a href='");
478: if ($ENV{'form.catalogmode'} eq 'groupimport') {
479: $r->print('javascript:document.forms.fileattr.action="'.$reshome.'";document.forms.fileattr.submit();');
480: } else {
481: $r->print($reshome);
482: }
483: $r->print("'>".&mt('Home').'</a></font>');
484: }
485: $r->print('</form>');
486: # ------------------------------------------------------ Remember where we were
487: &Apache::loncommon::storeresurl($storeuri);
488: &Apache::lonhtmlcommon::store_recent('residx',$storeuri,$storeuri);
489: # ----------------- output starting row to the indexed file/directory hierarchy
490: my $titleclr="#ddffff";
491: # $r->print(&initdebug());
492: # $r->print(&writedebug("Omit:@Omit")) if (@Omit);
493: # $r->print(&writedebug("Only:@Only")) if (@Only);
494: $r->print("<table width='100\%' border=0><tr><td bgcolor=#777777>\n");
495: $r->print("<table width='100\%' border=0><tr bgcolor=$titleclr>\n");
496: $r->print("<td $colspan><b>".&mt('Name')."</b></td>\n");
497: $r->print("<td><b>".&mt('Title')."</b></td>\n")
498: if ($hash{'display_attrs_0'} == 1);
499: $r->print("<td align=right><b>".&mt("Size")." (".&mt("bytes").") ".
500: "</b></td>\n") if ($hash{'display_attrs_1'} == 1);
501: $r->print("<td><b>".&mt("Last accessed")."</b></td>\n")
502: if ($hash{'display_attrs_2'} == 1);
503: $r->print("<td><b>".&mt("Last modified")."</b></td>\n")
504: if ($hash{'display_attrs_3'} == 1);
505: $r->print("<td><b>".&mt("Author(s)")."</b></td>\n")
506: if ($hash{'display_attrs_4'} == 1);
507: $r->print("<td><b>".&mt("Keywords")."</b></td>\n")
508: if ($hash{'display_attrs_5'} == 1);
509: $r->print("<td><b>".&mt("Language")."</b></td>\n")
510: if ($hash{'display_attrs_6'} == 1);
511: $r->print("<td><b>".&mt("Resource")."</b></td>\n")
512: if ($hash{'display_attrs_7'} == 1);
513: $r->print("<td><b>".&mt("Usage Statistics")." <br />(".
514: &mt("Courses/Network Hits").")</b></td>\n")
515: if ($hash{'display_attrs_8'} == 1);
516: $r->print('</tr>');
517:
518: # ----------------- read in what directories have previously been set to "open"
519: foreach (keys %hash) {
520: if ($_ =~ /^diropen_status_/) {
521: my $key = $_;
522: $key =~ s/^diropen_status_//;
523: $dirs{$key} = $hash{$_};
524: }
525: }
526:
527: if ($ENV{'form.openuri'}) { # take care of review and refresh options
528: my $uri=$ENV{'form.openuri'};
529: if (exists($hash{'diropen_status_'.$uri})) {
530: my $cursta = $hash{'diropen_status_'.$uri};
531: $dirs{$uri} = 'open';
532: $hash{'diropen_status_'.$uri} = 'open';
533: if ($cursta eq 'open') {
534: $dirs{$uri} = 'closed';
535: $hash{'diropen_status_'.$uri} = 'closed';
536: }
537: } else {
538: $hash{'diropen_status_'.$uri} = 'open';
539: $dirs{$uri} = 'open';
540: }
541: }
542:
543: my $toplevel;
544: my $indent = 0;
545: $uri = $uri.'/' if $uri !~ /.*\/$/;
546:
547: if ($ENV{'form.dirPointer'} ne 'on') {
548: $hash{'top.level'} = $uri;
549: $toplevel = $uri;
550: } else {
551: $toplevel = $hash{'top.level'};
552: }
553:
554: # -------------------------------- if not at top level, provide an uplink arrow
555: if ($toplevel ne '/res/'){
556: my (@uri_com) = split(/\//,$uri);
557: pop @uri_com;
558: my $upone = join('/',@uri_com);
559: my @list = qw (0);
560: &display_line ($r,'opened',$upone.'&viewOneUp',0,$upone,@list);
561: $indent = 1;
562: }
563:
564: # -------- recursively go through all the directories and output as appropriate
565: &scanDir ($r,$toplevel,$indent,\%hash);
566:
567: # ---------------------------- embed hidden information useful for group import
568: $r->print("<form name='fnum'>");
569: $r->print("<input type='hidden' name='fnum' value='$fnum'></form>");
570:
571: # -------------------------------------------------------------- end the tables
572: $r->print('</table>');
573: $r->print('</td></tr></table>');
574:
575: # --------------------------------------------------- end the output and return
576: $r->print('</body></html>'."\n");
577: }
578: if(! $c->aborted()) {
579: # write back into the temporary file
580: my %dbfile;
581: if (tie(%dbfile,'GDBM_File',$diropendb,&GDBM_NEWDB(),0640)) {
582: while (my($key,$value) = each(%hash)) {
583: $dbfile{$key}=$value;
584: }
585: untie(%dbfile);
586: }
587: }
588:
589: return OK;
590: }
591:
592: # ----------------------------------------------- recursive scan of a directory
593: sub scanDir {
594: my ($r,$startdir,$indent,$hashref)=@_;
595: my $c = $r->connection();
596: my ($compuri,$curdir);
597: my $dirptr=16384;
598: my $obs;
599: $indent++;
600: my %dupdirs = %dirs;
601: my @list=&get_list($r,$startdir);
602: foreach my $line (@list) {
603: return if ($c->aborted());
604: #This is a kludge, sorry aboot this
605: my ($strip,$dom,undef,$testdir,undef,undef,undef,undef,undef,undef,undef,undef,undef,undef,$obs,undef)=split(/\&/,$line,16);
606: next if($strip =~ /.*\.meta$/ | $obs eq '1');
607: my (@fileparts) = split(/\./,$strip);
608: if ($hash{'display_attrs_9'} != 1) {
609: # if not all versions to be shown
610: if (scalar(@fileparts) >= 3) {
611: my $fext = pop @fileparts;
612: my $ov = pop @fileparts;
613: my $fname = join ('.',@fileparts,$fext);
614: next if (grep /\Q$fname\E/,@list and $ov =~ /^\d+$/);
615: }
616: }
617:
618: if ($dom eq 'domain') {
619: # dom list has full path /res/<domain name>/ already
620: $curdir='';
621: $compuri = (split(/\&/,$line))[0];
622: } else {
623: # user, dir & file have name only, i.e., w/o path
624: $compuri = join('',$startdir,$strip,'/');
625: $curdir = $startdir;
626: }
627: my $diropen = 'closed';
628: if (($dirptr&$testdir) or ($dom =~ /^(domain|user)$/) or ($compuri=~/\.(sequence|page)\/$/)) {
629: while (my ($key,$val)= each %dupdirs) {
630: if ($key eq $compuri and $val eq "open") {
631: $diropen = "opened";
632: delete($dupdirs{$key});
633: delete($dirs{$key});
634: }
635: }
636: }
637: &display_line($r,$diropen,$line,$indent,$curdir,$hashref,@list);
638: &scanDir ($r,$compuri,$indent) if $diropen eq 'opened';
639: }
640: $indent--;
641: }
642:
643: # --------------- get complete matched list based on the uri (returns an array)
644: sub get_list {
645: my ($r,$uri)=@_;
646: my @list=();
647: (my $luri = $uri) =~ s/\//_/g;
648: if ($ENV{'form.updatedisplay'}) {
649: foreach (keys %hash) {
650: delete $hash{$_} if ($_ =~ /^dirlist_files_/);
651: }
652: }
653:
654: if ($hash{'dirlist_files_'.$luri}) {
655: @list = split(/\n/,$hash{'dirlist_files_'.$luri});
656: } elsif ($uri=~/\.(page|sequence)\/$/) {
657: # is a page or a sequence
658: $uri=~s/\/$//;
659: $uri='/'.(split(/\.(page|sequence)\/\//,$uri))[-1];
660: $uri=~s/\/+/\//g;
661: foreach (&Apache::lonsequence::attemptread(&Apache::lonnet::filelocation('',$uri))) {
662: my @ratpart=split(/\:/,$_);
663: push @list,$ratpart[1];
664: }
665: $hash{'dirlist_files_'.$luri} = join("\n",@list);
666: } else {
667: # is really a directory
668: @list = &Apache::lonnet::dirlist($uri);
669: $hash{'dirlist_files_'.$luri} = join("\n",@list);
670: }
671: return @list=&match_ext($r,@list);
672: }
673:
674: sub initdebug {
675: return <<ENDJS;
676: <script>
677: var debugging = true;
678: if (debugging) {
679: var debuggingWindow = window.open('','Debug','width=400,height=300',true);
680: }
681:
682: function output(text) {
683: if (debugging) {
684: debuggingWindow.document.writeln(text);
685: }
686: }
687: output("<html><head><title>Debugging Window</title></head><body><pre>");
688: </script>
689: ENDJS
690: }
691:
692: sub writedebug {
693: my $text = shift;
694: return "<script>output('$text');</script>";
695: }
696:
697: # -------------------- filters out files based on extensions (returns an array)
698: sub match_ext {
699: my ($r,@packlist)=@_;
700: my @trimlist;
701: my $nextline;
702: my @fileext;
703: my $dirptr=16384;
704:
705: foreach my $line (@packlist) {
706: chomp $line;
707: $line =~ s/^\/home\/httpd\/html//;
708: my @unpackline = split (/\&/,$line);
709: next if ($unpackline[0] eq '.');
710: next if ($unpackline[0] eq '..');
711: my @filecom = split (/\./,$unpackline[0]);
712: my $fext = pop(@filecom);
713: my $fnptr = ($unpackline[3]&$dirptr) || ($fext=~/\.(page|sequence)$/);
714: if ($fnptr == 0 and $unpackline[3] ne "") {
715: my $embstyle = &Apache::loncommon::fileembstyle($fext);
716: push @trimlist,$line if (defined($embstyle) &&
717: ($embstyle ne 'hdn' or $fext eq 'meta'));
718: } else {
719: push @trimlist,$line;
720: }
721: }
722: @trimlist = sort {uc($a) cmp uc($b)} (@trimlist);
723: return @trimlist;
724: }
725:
726: # ------------------------------- displays one line in appropriate table format
727: sub display_line {
728: my ($r,$diropen,$line,$indent,$startdir,$hashref,@list)=@_;
729: my (@pathfn, $fndir);
730: # there could be relative paths (files actually belonging into this directory)
731: # or absolute paths (for example, from sequences)
732: my $absolute;
733: my $pathprefix;
734: if ($line=~/^\/res\//) {
735: $absolute=1;
736: $pathprefix='';
737: } else {
738: $absolute=0;
739: $pathprefix=$startdir;
740: }
741: my $dirptr=16384;
742: my $fileclr="#ffffe6";
743: my $iconpath= $r->dir_config('lonIconsURL') . '/';
744:
745: my @filecom = split (/\&/,$line);
746: my @pathcom = split (/\//,$filecom[0]);
747: my $listname = $pathcom[scalar(@pathcom)-1];
748: my $fnptr = $filecom[3]&$dirptr;
749: my $msg = &mt('View').' '.$filecom[0].' '.&mt('resources');
750: $msg = &mt('Close').' '.$filecom[0].' '.&mt('directory') if $diropen eq 'opened';
751:
752: my $tabtag='</td>';
753: my $i=0;
754: while ($i<=8) {
755: $tabtag=join('',$tabtag,"<td> </td>")
756: if $hash{'display_attrs_'.$i} == 1;
757: $i++;
758: }
759:
760: my $valign = ($hash{'display_attrs_7'} == 1 ? 'top' : 'bottom');
761:
762: # display uplink arrow
763: if ($filecom[1] eq 'viewOneUp') {
764: my $updir=$startdir;
765: # -------------- Filter out sequence containment in crumbs and "recent folders"
766: $updir='/'.(split(/\.(page|sequence)\/\//,$startdir))[-1];
767: $updir=~s/\/+/\//g;
768:
769: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
770: $r->print("<td>\n");
771: $r->print ('<form method="post" name="dirpathUP" action="'.$updir.
772: '/" '.
773: 'onSubmit="return rep_dirpath(\'UP\','.
774: 'document.forms.fileattr.acts.value)" '.
775: 'enctype="application/x-www-form-urlencoded"'.
776: '>'."\n");
777: $r->print ('<input type=hidden name=openuri value="'.
778: $startdir.'">'."\n");
779: $r->print ('<input type="hidden" name="acts" value="">'."\n");
780: $r->print ('<input src="'.$iconpath.'arrow_up.gif"');
781: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
782: "\n");
783: $r->print(&mt("Up")." $tabtag</tr></form>\n");
784: return OK;
785: }
786: # Do we have permission to look at this?
787:
788: if($filecom[15] ne '1') { return OK if (!&Apache::lonnet::allowed('bre',$pathprefix.$filecom[0])); }
789:
790: # make absolute links appear on different background
791: if ($absolute) { $fileclr='#aaaa88'; }
792:
793: # display domain
794: if ($filecom[1] eq 'domain') {
795: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n")
796: if ($ENV{'form.dirPointer'} eq "on");
797: $r->print("<tr valign='$valign' bgcolor=$fileclr>$extrafield");
798: $r->print("<td>");
799: &begin_form ($r,$filecom[0]);
800: my $anchor = $filecom[0];
801: $anchor =~ s/\///g;
802: $r->print ('<a name="'.$anchor.'">');
803: $r->print ('<input type="hidden" name="acts" value="">');
804: $r->print ('<input src="'.$iconpath.'folder_pointer_'.
805: $diropen.'.gif"');
806: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
807: "\n");
808: $r->print ('<a href="javascript:gothere(\''.$filecom[0].
809: '\')"><img src="'.$iconpath.'server.gif"');
810: $r->print (' border="0" /></a>'."\n");
811: $r->print (&mt("Domain")." - $listname ");
812: if ($Apache::lonnet::domaindescription{$listname}) {
813: $r->print("(".$Apache::lonnet::domaindescription{$listname}.
814: ")");
815: }
816: $r->print (" $tabtag</tr></form>\n");
817: return OK;
818:
819: # display user directory
820: }
821: if ($filecom[1] eq 'user') {
822: $r->print("<tr valign=$valign bgcolor=$fileclr>$extrafield");
823: $r->print("<td nowrap>\n");
824: my $curdir = $startdir.$filecom[0].'/';
825: my $anchor = $curdir;
826: $anchor =~ s/\///g;
827: &begin_form ($r,$curdir);
828: $r->print ('<a name="'.$anchor.'"><img src="'.$iconpath.
829: 'whitespace1.gif" border="0" />'."\n");
830: $r->print ('<input type="hidden" name="acts" value="">');
831: $r->print ('<input src="'.$iconpath.'folder_pointer_'.$diropen.
832: '.gif"');
833: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
834: "\n");
835: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src='.
836: $iconpath.'quill.gif border="0" name="'.$msg.
837: '" height="22" /></a>');
838: my $domain=(split(m|/|,$startdir))[2];
839: my $plainname=&Apache::loncommon::plainname($listname,$domain);
840: $r->print ($listname);
841: if (defined($plainname) && $plainname) { $r->print(" ($plainname) "); }
842: $r->print ($tabtag.'</tr></form>'."\n");
843: return OK;
844: }
845:
846: # display file
847: if (($fnptr == 0 and $filecom[3] ne '') or $absolute) {
848: my $filelink = $pathprefix.$filecom[0];
849: my @file_ext = split (/\./,$listname);
850: my $curfext = $file_ext[-1];
851: if (@Omit) {
852: foreach (@Omit) { return OK if ($curfext eq $_); }
853: }
854: if (@Only) {
855: my $skip = 1;
856: foreach (@Only) { $skip = 0 if ($curfext eq $_); }
857: return OK if ($skip > 0);
858: }
859: # Set the icon for the file
860: my $iconname = &Apache::loncommon::icon($listname);
861: $r->print("<tr valign='$valign' bgcolor=$fileclr><td nowrap>");
862:
863: my $metafile = $Apache::lonnet::perlvar{'lonDocRoot'}.$pathprefix.
864: $filecom[0].'.meta';
865: if (-e $metafile) {
866: $metafile=1;
867: } else {
868: $metafile=0;
869: }
870: my $title;
871: if ($ENV{'form.catalogmode'} eq 'interactive') {
872: $title=$listname;
873: $title = &Apache::lonnet::metadata($filelink,'title')
874: if ($metafile == 1);
875: $title=$listname unless $title;
876: my $titleesc=HTML::Entities::encode($title,'<>&"');
877: $titleesc=~s/\'/\\'/; #' (clean up this spare quote)
878: $r->print("<a href=\"javascript:select_data(\'",
879: $titleesc,"','",$filelink,"')\">");
880: $r->print("<img src='",$iconpath,"select.gif' border='0' /></a>".
881: "\n");
882: $r->print("</td><td nowrap>");
883: } elsif ($ENV{'form.catalogmode'} eq 'groupimport') {
884: $title=$listname;
885: $title = &Apache::lonnet::metadata($filelink,'title')
886: if ($metafile == 1);
887: $title=$listname unless $title;
888: my $titleesc=&HTML::Entities::encode($title,'<>&"');
889: $r->print("<form name='form$fnum'>\n");
890: $r->print("<input type='checkbox' name='filelink"."' ".
891: "value='$filelink' onClick='".
892: "javascript:queue(\"form$fnum\")' ");
893: if ($hash{'store_'.$filelink}) {
894: $r->print("checked");
895: }
896: $r->print(">\n");
897: $r->print("<input type='hidden' name='title"."' ".
898: "value='$titleesc'>\n");
899: $r->print("</form>\n");
900: $r->print("</td><td nowrap>");
901: $hash{"pre_${fnum}_link"}=$filelink;
902: $hash{"pre_${fnum}_title"}=$titleesc;
903: $fnum++;
904: }
905: # Form to open or close sequences
906: if ($filelink=~/\.(page|sequence)$/) {
907: my $curdir = $startdir.$filecom[0].'/';
908: my $anchor = $curdir;
909: $anchor =~ s/\///g;
910: &begin_form($r,$curdir);
911: $indent--;
912: }
913: # General indentation
914: if ($indent > 0 and $indent < 11) {
915: $r->print("<img src=",$iconpath,"whitespace",$indent,
916: ".gif border='0' />\n");
917: } elsif ($indent >0) {
918: my $ten = int($indent/10.);
919: my $rem = $indent%10.0;
920: my $count = 0;
921: while ($count < $ten) {
922: $r->print("<img src=",$iconpath,
923: "whitespace10.gif border='0' />\n");
924: $count++;
925: }
926: $r->print("<img src=",$iconpath,"whitespace",$rem,
927: ".gif border='0' />\n") if $rem > 0;
928: }
929: # Sequence open/close icon
930: if ($filelink=~/\.(page|sequence)$/) {
931: my $curdir = $startdir.$filecom[0].'/';
932: my $anchor = $curdir;
933: $anchor =~ s/\///g;
934: $r->print ('<input type="hidden" name="acts" value="">');
935: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
936: 'folder_pointer_'.$diropen.'.gif"');
937: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
938: "\n");
939: }
940: # Filetype icons
941: $r->print("<img src='$iconname' border='0' />\n");
942: # Close form to open/close sequence
943: if ($filelink=~/\.(page|sequence)$/) {
944: $r->print('</form>');
945: }
946: $r->print (" <a href=\"javascript:openWindow('".$filelink.
947: "', 'previewfile', '450', '500', 'no', 'yes','yes')\";".
948: " TARGET=_self>$listname</a> ");
949:
950: $r->print (" (<a href=\"javascript:openWindow('".$filelink.
951: ".meta', 'metadatafile', '500', '550', 'no', 'yes','no')\"; ".
952: "TARGET=_self>metadata</a>) ");
953: $r->print("</td>\n");
954: if ($hash{'display_attrs_0'} == 1) {
955: my $title = &Apache::lonnet::gettitle($filelink,'title');
956: $r->print('<td> '.($title eq '' ? ' ' : $title).
957: ' </td>'."\n");
958: }
959: $r->print('<td align=right> ',
960: $filecom[8]," </td>\n")
961: if $hash{'display_attrs_1'} == 1;
962: $r->print('<td> '.
963: (localtime($filecom[9]))." </td>\n")
964: if $hash{'display_attrs_2'} == 1;
965: $r->print('<td> '.
966: (localtime($filecom[10]))." </td>\n")
967: if $hash{'display_attrs_3'} == 1;
968:
969: if ($hash{'display_attrs_4'} == 1) {
970: my $author = &Apache::lonnet::metadata($filelink,'author');
971: $r->print('<td> '.($author eq '' ? ' ' : $author).
972: " </td>\n");
973: }
974: if ($hash{'display_attrs_5'} == 1) {
975: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
976: # $keywords = ' ' if (!$keywords);
977: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
978: " </td>\n");
979: }
980: if ($hash{'display_attrs_6'} == 1) {
981: my $lang = &Apache::lonnet::metadata($filelink,'language');
982: $lang = &Apache::loncommon::languagedescription($lang);
983: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
984: " </td>\n");
985: }
986: if ($hash{'display_attrs_7'} == 1) {
987: my $output='';
988: my $embstyle=&Apache::loncommon::fileembstyle($curfext);
989: if ($embstyle eq 'ssi') {
990: my $cache=$Apache::lonnet::perlvar{'lonDocRoot'}.$filelink.
991: '.tmp';
992: if ((!$ENV{'form.updatedisplay'}) &&
993: (-e $cache)) {
994: open(FH,$cache);
995: $output=join("\n",<FH>);
996: close(FH);
997: } else {
998: $output=&Apache::lonnet::ssi_body($filelink);
999: open(FH,">$cache");
1000: print FH $output;
1001: close(FH);
1002: }
1003: $output='<font size="-2">'.$output.'</font>';
1004: } elsif ($embstyle eq 'img') {
1005: $output='<img src="'.$filelink.'" />';
1006: } elsif ($filelink=~/^\/res\/(\w+)\/(\w+)\//) {
1007: $output='<img src="http://'.
1008: $Apache::lonnet::hostname{&Apache::lonnet::homeserver($2,$1)}.
1009: '/cgi-bin/thumbnail.gif?url='.$filelink.'" />';
1010: }
1011: $r->print('<td> '.($output eq '' ? ' ':$output).
1012: " </td>\n");
1013: }
1014: if ($hash{'display_attrs_8'} == 1) {
1015: my (%stat) = &Apache::lonmeta::dynamicmeta($filelink);
1016: my $stat = (exists($stat{'course'}) ? $stat{'course'} : '').
1017: ((exists($stat{'course'}) || exists($stat{'count'})) ? '/' : '').
1018: (exists($stat{'count'}) ? $stat{'count'} : '');
1019: $r->print('<td align=center> '.($stat eq '' ? ' ' : $stat).
1020: ' </td>'."\n");
1021: }
1022:
1023: $r->print("</tr>\n");
1024: }
1025:
1026: # -- display directory
1027: if ($fnptr == $dirptr) {
1028: my $curdir = $startdir.$filecom[0].'/';
1029: my $anchor = $curdir;
1030: $anchor =~ s/\///g;
1031: $r->print("<tr bgcolor=$fileclr>$extrafield<td valign=$valign>");
1032: &begin_form ($r,$curdir);
1033: my $indentm1 = $indent-1;
1034: if ($indentm1 < 11 and $indentm1 > 0) {
1035: $r->print("<img src=",$iconpath,"whitespace",$indentm1,
1036: ".gif border='0' />\n");
1037: } else {
1038: my $ten = int($indentm1/10.);
1039: my $rem = $indentm1%10.0;
1040: my $count = 0;
1041: while ($count < $ten) {
1042: $r->print ("<img src=",$iconpath
1043: ,"whitespace10.gif border='0' />\n");
1044: $count++;
1045: }
1046: $r->print ("<img src=",$iconpath,"whitespace",$rem,
1047: ".gif border='0' />\n") if $rem > 0;
1048: }
1049: $r->print ('<input type="hidden" name="acts" value="">');
1050: $r->print ('<a name="'.$anchor.'"><input src="'.$iconpath.
1051: 'folder_pointer_'.$diropen.'.gif"');
1052: $r->print (' name="'.$msg.'" height="22" type="image" border="0">'.
1053: "\n");
1054: $r->print ('<a href="javascript:gothere(\''.$curdir.'\')"><img src="'.
1055: $iconpath.'folder_'.$diropen.'.gif" border="0" /></a>'.
1056: "\n");
1057: $r->print ("$listname</td>\n");
1058: # Attributes
1059: my $filelink = $startdir.$filecom[0].'/default';
1060:
1061: if ($hash{'display_attrs_0'} == 1) {
1062: my $title = &Apache::lonnet::gettitle($filelink,'title');
1063: $r->print('<td> '.($title eq '' ? ' ' : $title).
1064: ' </td>'."\n");
1065: }
1066: $r->print('<td align=right> ',
1067: $filecom[8]," </td>\n")
1068: if $hash{'display_attrs_1'} == 1;
1069: $r->print('<td> '.
1070: (localtime($filecom[9]))." </td>\n")
1071: if $hash{'display_attrs_2'} == 1;
1072: $r->print('<td> '.
1073: (localtime($filecom[10]))." </td>\n")
1074: if $hash{'display_attrs_3'} == 1;
1075:
1076: if ($hash{'display_attrs_4'} == 1) {
1077: my $author = &Apache::lonnet::metadata($filelink,'author');
1078: $r->print('<td> '.($author eq '' ? ' ' : $author).
1079: " </td>\n");
1080: }
1081: if ($hash{'display_attrs_5'} == 1) {
1082: my $keywords = &Apache::lonnet::metadata($filelink,'keywords');
1083: # $keywords = ' ' if (!$keywords);
1084: $r->print('<td> '.($keywords eq '' ? ' ' : $keywords).
1085: " </td>\n");
1086: }
1087: if ($hash{'display_attrs_6'} == 1) {
1088: my $lang = &Apache::lonnet::metadata($filelink,'language');
1089: $lang = &Apache::loncommon::languagedescription($lang);
1090: $r->print('<td> '.($lang eq '' ? ' ' : $lang).
1091: " </td>\n");
1092: }
1093: if ($hash{'display_attrs_7'} == 1) {
1094: $r->print('<td> </td>');
1095: }
1096: if ($hash{'display_attrs_8'} == 1) {
1097: $r->print('<td> </td>');
1098: }
1099: $r->print('</form></tr>');
1100: }
1101:
1102: }
1103:
1104: # ------------------- prints the beginning of a form for directory or file link
1105: sub begin_form {
1106: my ($r,$uri) = @_;
1107: my $anchor = $uri;
1108: $anchor =~ s/\///g;
1109: $r->print ('<form method="post" name="dirpath'.$dnum.'" action="'.$uri.
1110: '#'.$anchor.
1111: '" onSubmit="return rep_dirpath(\''.$dnum.'\''.
1112: ',document.forms.fileattr.acts.value)" '.
1113: 'enctype="application/x-www-form-urlencoded">'."\n");
1114: $r->print ('<input type="hidden" name="openuri" value="'.$uri.'">'.
1115: "\n");
1116: $r->print ('<input type="hidden" name="dirPointer" value="on">'."\n");
1117: $dnum++;
1118: }
1119:
1120: # --------- settings whenever the user causes the indexer window to be launched
1121: sub start_fresh_session {
1122: delete $hash{'form.catalogmode'};
1123: delete $hash{'form.mode'};
1124: delete $hash{'form.form'};
1125: delete $hash{'form.element'};
1126: delete $hash{'form.omit'};
1127: delete $hash{'form.only'};
1128: foreach (keys %hash) {
1129: delete $hash{$_} if (/^(pre_|store)/);
1130: }
1131: }
1132:
1133: # ------------------------------------------------------------------- setvalues
1134: sub setvalues {
1135: # setvalues is used in registerurl to synchronize the database
1136: # hash and environment hashes
1137: my ($H1,$h1key,$H2,$h2key) =@_;
1138: #
1139: if (exists $H2->{$h2key}) {
1140: $H1->{$h1key} = $H2->{$h2key};
1141: } elsif (exists $H1->{$h1key}) {
1142: $H2->{$h2key} = $H1->{$h1key};
1143: }
1144: }
1145:
1146: 1;
1147:
1148: sub cleanup {
1149: if (tied(%hash)){
1150: &Apache::lonnet::logthis('Cleanup indexer: hash');
1151: }
1152: }
1153:
1154: =head1 NAME
1155:
1156: Apache::lonindexer - mod_perl module for cross server filesystem browsing
1157:
1158: =head1 SYNOPSIS
1159:
1160: Invoked by /etc/httpd/conf/srm.conf:
1161:
1162: <LocationMatch "^/res.*/$">
1163: SetHandler perl-script
1164: PerlHandler Apache::lonindexer
1165: </LocationMatch>
1166:
1167: =head1 INTRODUCTION
1168:
1169: This module enables a scheme of browsing across a cross server.
1170:
1171: This is part of the LearningOnline Network with CAPA project
1172: described at http://www.lon-capa.org.
1173:
1174: =head1 BEGIN SUBROUTINE
1175:
1176: This routine is only run once after compilation.
1177:
1178: =over 4
1179:
1180: =item *
1181:
1182: Initializes %language hash table.
1183:
1184: =back
1185:
1186: =head1 HANDLER SUBROUTINE
1187:
1188: This routine is called by Apache and mod_perl.
1189:
1190: =over 4
1191:
1192: =item *
1193:
1194: read in machine configuration variables
1195:
1196: =item *
1197:
1198: see if called from an interactive mode
1199:
1200: =item *
1201:
1202: refresh environment with user database values (in %hash)
1203:
1204: =item *
1205:
1206: define extra fields and buttons in case of special mode
1207:
1208: =item *
1209:
1210: set catalogmodefunctions to have extra needed javascript functionality
1211:
1212: =item *
1213:
1214: print header
1215:
1216: =item *
1217:
1218: evaluate actions from previous page (both cumulatively and chronologically)
1219:
1220: =item *
1221:
1222: output title
1223:
1224: =item *
1225:
1226: get state of file attributes to be showing
1227:
1228: =item *
1229:
1230: output state of file attributes to be showing
1231:
1232: =item *
1233:
1234: output starting row to the indexed file/directory hierarchy
1235:
1236: =item *
1237:
1238: read in what directories have previously been set to "open"
1239:
1240: =item *
1241:
1242: if not at top level, provide an uplink arrow
1243:
1244: =item *
1245:
1246: recursively go through all the directories and output as appropriate
1247:
1248: =item *
1249:
1250: information useful for group import
1251:
1252: =item *
1253:
1254: end the tables
1255:
1256: =item *
1257:
1258: end the output and return
1259:
1260: =back
1261:
1262: =head1 OTHER SUBROUTINES
1263:
1264: =over 4
1265:
1266: =item *
1267:
1268: scanDir - recursive scan of a directory
1269:
1270: =item *
1271:
1272: get_list - get complete matched list based on the uri (returns an array)
1273:
1274: =item *
1275:
1276: match_ext - filters out files based on extensions (returns an array)
1277:
1278: =item *
1279:
1280: display_line - displays one line in appropriate table format
1281:
1282: =item *
1283:
1284: begin_form - prints the beginning of a form for directory or file link
1285:
1286: =item *
1287:
1288: start_fresh_session - settings whenever the user causes the indexer window
1289: to be launched
1290:
1291: =back
1292:
1293: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonindexer.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface