Annotation of loncom/interface/loncommon.pm, revision 1.163
1.10 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # a pile of common routines
1.10 albertel 3: #
1.163 ! www 4: # $Id: loncommon.pm,v 1.162 2003/12/22 23:34:49 www Exp $
1.10 albertel 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: #
1.1 albertel 28:
29: # Makes a table out of the previous attempts
1.2 albertel 30: # Inputs result_from_symbread, user, domain, course_id
1.16 harris41 31: # Reads in non-network-related .tab files
1.1 albertel 32:
1.35 matthew 33: # POD header:
34:
1.45 matthew 35: =pod
36:
1.35 matthew 37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
1.112 bowersj2 43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
1.35 matthew 45:
1.112 bowersj2 46: =head1 OVERVIEW
1.35 matthew 47:
1.112 bowersj2 48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
1.35 matthew 50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
1.1 albertel 55: package Apache::loncommon;
56:
57: use strict;
1.22 www 58: use Apache::lonnet();
1.46 matthew 59: use GDBM_File;
1.51 www 60: use POSIX qw(strftime mktime);
1.99 www 61: use Apache::Constants qw(:common :http :methods);
1.1 albertel 62: use Apache::lonmsg();
1.82 www 63: use Apache::lonmenu();
1.117 www 64: use Apache::lonlocal;
1.139 matthew 65: use HTML::Entities;
1.117 www 66:
1.22 www 67: my $readit;
68:
1.157 matthew 69: ##
70: ## Global Variables
71: ##
1.46 matthew 72:
1.20 www 73: # ----------------------------------------------- Filetypes/Languages/Copyright
1.12 harris41 74: my %language;
1.124 www 75: my %supported_language;
1.12 harris41 76: my %cprtag;
77: my %fe; my %fd;
1.41 ng 78: my %category_extensions;
1.12 harris41 79:
1.63 www 80: # ---------------------------------------------- Designs
81:
82: my %designhash;
83:
1.46 matthew 84: # ---------------------------------------------- Thesaurus variables
1.144 matthew 85: #
86: # %Keywords:
87: # A hash used by &keyword to determine if a word is considered a keyword.
88: # $thesaurus_db_file
89: # Scalar containing the full path to the thesaurus database.
1.46 matthew 90:
91: my %Keywords;
92: my $thesaurus_db_file;
93:
1.144 matthew 94: #
95: # Initialize values from language.tab, copyright.tab, filetypes.tab,
96: # thesaurus.tab, and filecategories.tab.
97: #
1.18 www 98: BEGIN {
1.46 matthew 99: # Variable initialization
100: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
101: #
1.22 www 102: unless ($readit) {
1.12 harris41 103: # ------------------------------------------------------------------- languages
104: {
1.158 raeburn 105: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
106: '/language.tab';
107: if ( open(my $fh,"<$langtabfile") ) {
108: while (<$fh>) {
109: next if /^\#/;
110: chomp;
111: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
112: $language{$key}=$val.' - '.$enc;
113: if ($sup) {
114: $supported_language{$key}=$sup;
115: }
116: }
117: close($fh);
118: }
1.12 harris41 119: }
120: # ------------------------------------------------------------------ copyrights
121: {
1.158 raeburn 122: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
123: '/copyright.tab';
124: if ( open (my $fh,"<$copyrightfile") ) {
125: while (<$fh>) {
126: next if /^\#/;
127: chomp;
128: my ($key,$val)=(split(/\s+/,$_,2));
129: $cprtag{$key}=$val;
130: }
131: close($fh);
132: }
1.12 harris41 133: }
1.63 www 134:
135: # -------------------------------------------------------------- domain designs
136:
137: my $filename;
138: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
139: opendir(DIR,$designdir);
140: while ($filename=readdir(DIR)) {
141: my ($domain)=($filename=~/^(\w+)\./);
142: {
1.158 raeburn 143: my $designfile = $designdir.'/'.$filename;
144: if ( open (my $fh,"<$designfile") ) {
145: while (<$fh>) {
146: next if /^\#/;
147: chomp;
148: my ($key,$val)=(split(/\=/,$_));
149: if ($val) { $designhash{$domain.'.'.$key}=$val; }
150: }
151: close($fh);
152: }
1.63 www 153: }
154:
155: }
156: closedir(DIR);
157:
158:
1.15 harris41 159: # ------------------------------------------------------------- file categories
160: {
1.158 raeburn 161: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
162: '/filecategories.tab';
163: if ( open (my $fh,"<$categoryfile") ) {
164: while (<$fh>) {
165: next if /^\#/;
166: chomp;
167: my ($extension,$category)=(split(/\s+/,$_,2));
168: push @{$category_extensions{lc($category)}},$extension;
169: }
170: close($fh);
171: }
172:
1.15 harris41 173: }
1.12 harris41 174: # ------------------------------------------------------------------ file types
175: {
1.158 raeburn 176: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
177: '/filetypes.tab';
178: if ( open (my $fh,"<$typesfile") ) {
1.16 harris41 179: while (<$fh>) {
1.158 raeburn 180: next if (/^\#/);
181: chomp;
182: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
183: if ($descr ne '') {
184: $fe{$ending}=lc($emb);
185: $fd{$ending}=$descr;
186: }
187: }
188: close($fh);
189: }
1.12 harris41 190: }
1.22 www 191: &Apache::lonnet::logthis(
1.46 matthew 192: "<font color=yellow>INFO: Read file types</font>");
1.22 www 193: $readit=1;
1.46 matthew 194: } # end of unless($readit)
1.32 matthew 195:
196: }
1.112 bowersj2 197:
1.42 matthew 198: ###############################################################
199: ## HTML and Javascript Helper Functions ##
200: ###############################################################
201:
202: =pod
203:
1.112 bowersj2 204: =head1 HTML and Javascript Functions
1.42 matthew 205:
1.112 bowersj2 206: =over 4
207:
208: =item * browser_and_searcher_javascript ()
209:
210: X<browsing, javascript>X<searching, javascript>Returns a string
211: containing javascript with two functions, C<openbrowser> and
212: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
213: tags.
1.42 matthew 214:
1.112 bowersj2 215: =item * openbrowser(formname,elementname,only,omit) [javascript]
1.42 matthew 216:
217: inputs: formname, elementname, only, omit
218:
219: formname and elementname indicate the name of the html form and name of
220: the element that the results of the browsing selection are to be placed in.
221:
222: Specifying 'only' will restrict the browser to displaying only files
223: with the given extension. Can be a comma seperated list.
224:
225: Specifying 'omit' will restrict the browser to NOT displaying files
226: with the given extension. Can be a comma seperated list.
227:
1.112 bowersj2 228: =item * opensearcher(formname, elementname) [javascript]
1.42 matthew 229:
230: Inputs: formname, elementname
231:
232: formname and elementname specify the name of the html form and the name
233: of the element the selection from the search results will be placed in.
234:
235: =cut
236:
237: sub browser_and_searcher_javascript {
238: return <<END;
1.50 matthew 239: var editbrowser = null;
1.135 albertel 240: function openbrowser(formname,elementname,only,omit,titleelement) {
1.42 matthew 241: var url = '/res/?';
242: if (editbrowser == null) {
243: url += 'launch=1&';
244: }
245: url += 'catalogmode=interactive&';
246: url += 'mode=edit&';
247: url += 'form=' + formname + '&';
248: if (only != null) {
249: url += 'only=' + only + '&';
250: }
251: if (omit != null) {
252: url += 'omit=' + omit + '&';
253: }
1.135 albertel 254: if (titleelement != null) {
255: url += 'titleelement=' + titleelement + '&';
256: }
1.42 matthew 257: url += 'element=' + elementname + '';
258: var title = 'Browser';
259: var options = 'scrollbars=1,resizable=1,menubar=0';
260: options += ',width=700,height=600';
261: editbrowser = open(url,title,options,'1');
262: editbrowser.focus();
263: }
264: var editsearcher;
1.135 albertel 265: function opensearcher(formname,elementname,titleelement) {
1.42 matthew 266: var url = '/adm/searchcat?';
267: if (editsearcher == null) {
268: url += 'launch=1&';
269: }
270: url += 'catalogmode=interactive&';
271: url += 'mode=edit&';
272: url += 'form=' + formname + '&';
1.135 albertel 273: if (titleelement != null) {
274: url += 'titleelement=' + titleelement + '&';
275: }
1.42 matthew 276: url += 'element=' + elementname + '';
277: var title = 'Search';
278: var options = 'scrollbars=1,resizable=1,menubar=0';
279: options += ',width=700,height=600';
280: editsearcher = open(url,title,options,'1');
281: editsearcher.focus();
282: }
283: END
284: }
285:
1.74 www 286: sub studentbrowser_javascript {
1.111 www 287: unless (
288: (($ENV{'request.course.id'}) &&
289: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
290: || ($ENV{'request.role'}=~/^(au|dc|su)/)
291: ) { return ''; }
1.74 www 292: return (<<'ENDSTDBRW');
293: <script type="text/javascript" language="Javascript" >
294: var stdeditbrowser;
1.111 www 295: function openstdbrowser(formname,uname,udom,roleflag) {
1.74 www 296: var url = '/adm/pickstudent?';
297: var filter;
298: eval('filter=document.'+formname+'.'+uname+'.value;');
299: if (filter != null) {
300: if (filter != '') {
301: url += 'filter='+filter+'&';
302: }
303: }
304: url += 'form=' + formname + '&unameelement='+uname+
305: '&udomelement='+udom;
1.111 www 306: if (roleflag) { url+="&roles=1"; }
1.102 www 307: var title = 'Student_Browser';
1.74 www 308: var options = 'scrollbars=1,resizable=1,menubar=0';
309: options += ',width=700,height=600';
310: stdeditbrowser = open(url,title,options,'1');
311: stdeditbrowser.focus();
312: }
313: </script>
314: ENDSTDBRW
315: }
1.42 matthew 316:
1.74 www 317: sub selectstudent_link {
1.111 www 318: my ($form,$unameele,$udomele)=@_;
319: if ($ENV{'request.course.id'}) {
320: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
321: return '';
322: }
323: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
1.119 www 324: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
1.74 www 325: }
1.111 www 326: if ($ENV{'request.role'}=~/^(au|dc|su)/) {
327: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
1.119 www 328: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
1.111 www 329: }
330: return '';
1.91 www 331: }
332:
333: sub coursebrowser_javascript {
1.128 albertel 334: my ($domainfilter)=@_;
335: return (<<ENDSTDBRW);
1.91 www 336: <script type="text/javascript" language="Javascript" >
337: var stdeditbrowser;
338: function opencrsbrowser(formname,uname,udom) {
339: var url = '/adm/pickcourse?';
340: var filter;
341: if (filter != null) {
342: if (filter != '') {
343: url += 'filter='+filter+'&';
344: }
345: }
1.128 albertel 346: var domainfilter='$domainfilter';
347: if (domainfilter != null) {
348: if (domainfilter != '') {
349: url += 'domainfilter='+domainfilter+'&';
350: }
351: }
1.91 www 352: url += 'form=' + formname + '&cnumelement='+uname+
353: '&cdomelement='+udom;
1.102 www 354: var title = 'Course_Browser';
1.91 www 355: var options = 'scrollbars=1,resizable=1,menubar=0';
356: options += ',width=700,height=600';
357: stdeditbrowser = open(url,title,options,'1');
358: stdeditbrowser.focus();
359: }
360: </script>
361: ENDSTDBRW
362: }
363:
364: sub selectcourse_link {
365: my ($form,$unameele,$udomele)=@_;
366: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
1.119 www 367: '","'.$udomele.'");'."'>".&mt('Select Course')."</a>";
1.74 www 368: }
1.42 matthew 369:
370: =pod
1.36 matthew 371:
1.112 bowersj2 372: =item * linked_select_forms(...)
1.36 matthew 373:
374: linked_select_forms returns a string containing a <script></script> block
375: and html for two <select> menus. The select menus will be linked in that
376: changing the value of the first menu will result in new values being placed
377: in the second menu. The values in the select menu will appear in alphabetical
378: order.
379:
380: linked_select_forms takes the following ordered inputs:
381:
382: =over 4
383:
1.112 bowersj2 384: =item * $formname, the name of the <form> tag
1.36 matthew 385:
1.112 bowersj2 386: =item * $middletext, the text which appears between the <select> tags
1.36 matthew 387:
1.112 bowersj2 388: =item * $firstdefault, the default value for the first menu
1.36 matthew 389:
1.112 bowersj2 390: =item * $firstselectname, the name of the first <select> tag
1.36 matthew 391:
1.112 bowersj2 392: =item * $secondselectname, the name of the second <select> tag
1.36 matthew 393:
1.112 bowersj2 394: =item * $hashref, a reference to a hash containing the data for the menus.
1.36 matthew 395:
1.41 ng 396: =back
397:
1.36 matthew 398: Below is an example of such a hash. Only the 'text', 'default', and
399: 'select2' keys must appear as stated. keys(%menu) are the possible
400: values for the first select menu. The text that coincides with the
1.41 ng 401: first menu value is given in $menu{$choice1}->{'text'}. The values
1.36 matthew 402: and text for the second menu are given in the hash pointed to by
403: $menu{$choice1}->{'select2'}.
404:
1.112 bowersj2 405: my %menu = ( A1 => { text =>"Choice A1" ,
406: default => "B3",
407: select2 => {
408: B1 => "Choice B1",
409: B2 => "Choice B2",
410: B3 => "Choice B3",
411: B4 => "Choice B4"
412: }
413: },
414: A2 => { text =>"Choice A2" ,
415: default => "C2",
416: select2 => {
417: C1 => "Choice C1",
418: C2 => "Choice C2",
419: C3 => "Choice C3"
420: }
421: },
422: A3 => { text =>"Choice A3" ,
423: default => "D6",
424: select2 => {
425: D1 => "Choice D1",
426: D2 => "Choice D2",
427: D3 => "Choice D3",
428: D4 => "Choice D4",
429: D5 => "Choice D5",
430: D6 => "Choice D6",
431: D7 => "Choice D7"
432: }
433: }
434: );
1.36 matthew 435:
436: =cut
437:
438: sub linked_select_forms {
439: my ($formname,
440: $middletext,
441: $firstdefault,
442: $firstselectname,
443: $secondselectname,
444: $hashref
445: ) = @_;
446: my $second = "document.$formname.$secondselectname";
447: my $first = "document.$formname.$firstselectname";
448: # output the javascript to do the changing
449: my $result = '';
450: $result.="<script>\n";
451: $result.="var select2data = new Object();\n";
452: $" = '","';
453: my $debug = '';
454: foreach my $s1 (sort(keys(%$hashref))) {
455: $result.="select2data.d_$s1 = new Object();\n";
456: $result.="select2data.d_$s1.def = new String('".
457: $hashref->{$s1}->{'default'}."');\n";
458: $result.="select2data.d_$s1.values = new Array(";
459: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
460: $result.="\"@s2values\");\n";
461: $result.="select2data.d_$s1.texts = new Array(";
462: my @s2texts;
463: foreach my $value (@s2values) {
464: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
465: }
466: $result.="\"@s2texts\");\n";
467: }
468: $"=' ';
469: $result.= <<"END";
470:
471: function select1_changed() {
472: // Determine new choice
473: var newvalue = "d_" + $first.value;
474: // update select2
475: var values = select2data[newvalue].values;
476: var texts = select2data[newvalue].texts;
477: var select2def = select2data[newvalue].def;
478: var i;
479: // out with the old
480: for (i = 0; i < $second.options.length; i++) {
481: $second.options[i] = null;
482: }
483: // in with the nuclear
484: for (i=0;i<values.length; i++) {
485: $second.options[i] = new Option(values[i]);
1.143 matthew 486: $second.options[i].value = values[i];
1.36 matthew 487: $second.options[i].text = texts[i];
488: if (values[i] == select2def) {
489: $second.options[i].selected = true;
490: }
491: }
492: }
493: </script>
494: END
495: # output the initial values for the selection lists
496: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
497: foreach my $value (sort(keys(%$hashref))) {
498: $result.=" <option value=\"$value\" ";
499: $result.=" selected=\"true\" " if ($value eq $firstdefault);
1.119 www 500: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
1.36 matthew 501: }
502: $result .= "</select>\n";
503: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
504: $result .= $middletext;
505: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
506: my $seconddefault = $hashref->{$firstdefault}->{'default'};
507: foreach my $value (sort(keys(%select2))) {
508: $result.=" <option value=\"$value\" ";
509: $result.=" selected=\"true\" " if ($value eq $seconddefault);
1.119 www 510: $result.=">".&mt($select2{$value})."</option>\n";
1.36 matthew 511: }
512: $result .= "</select>\n";
513: # return $debug;
514: return $result;
515: } # end of sub linked_select_forms {
516:
1.45 matthew 517: =pod
1.44 bowersj2 518:
1.112 bowersj2 519: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
1.44 bowersj2 520:
1.112 bowersj2 521: Returns a string corresponding to an HTML link to the given help
522: $topic, where $topic corresponds to the name of a .tex file in
523: /home/httpd/html/adm/help/tex, with underscores replaced by
524: spaces.
525:
526: $text will optionally be linked to the same topic, allowing you to
527: link text in addition to the graphic. If you do not want to link
528: text, but wish to specify one of the later parameters, pass an
529: empty string.
530:
531: $stayOnPage is a value that will be interpreted as a boolean. If true,
532: the link will not open a new window. If false, the link will open
533: a new window using Javascript. (Default is false.)
534:
535: $width and $height are optional numerical parameters that will
536: override the width and height of the popped up window, which may
537: be useful for certain help topics with big pictures included.
1.44 bowersj2 538:
539: =cut
540:
541: sub help_open_topic {
1.48 bowersj2 542: my ($topic, $text, $stayOnPage, $width, $height) = @_;
543: $text = "" if (not defined $text);
1.44 bowersj2 544: $stayOnPage = 0 if (not defined $stayOnPage);
1.108 bowersj2 545: if ($ENV{'browser.interface'} eq 'textual' ||
546: $ENV{'environment.remote'} eq 'off' ) {
1.79 www 547: $stayOnPage=1;
548: }
1.44 bowersj2 549: $width = 350 if (not defined $width);
550: $height = 400 if (not defined $height);
551: my $filename = $topic;
552: $filename =~ s/ /_/g;
553:
1.48 bowersj2 554: my $template = "";
555: my $link;
1.159 www 556:
557: $topic=~s/\W/\_/g;
1.44 bowersj2 558:
559: if (!$stayOnPage)
560: {
1.72 bowersj2 561: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
1.44 bowersj2 562: }
563: else
564: {
1.48 bowersj2 565: $link = "/adm/help/${filename}.hlp";
566: }
567:
568: # Add the text
569: if ($text ne "")
570: {
1.77 www 571: $template .=
572: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
1.78 www 573: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.48 bowersj2 574: }
575:
576: # Add the graphic
577: $template .= <<"ENDTEMPLATE";
1.77 www 578: <a href="$link"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)" /></a>
1.44 bowersj2 579: ENDTEMPLATE
1.78 www 580: if ($text ne '') { $template.='</td></tr></table>' };
1.44 bowersj2 581: return $template;
582:
1.106 bowersj2 583: }
584:
585: # This is a quicky function for Latex cheatsheet editing, since it
586: # appears in at least four places
587: sub helpLatexCheatsheet {
588: my $other = shift;
589: my $addOther = '';
590: if ($other) {
591: $addOther = Apache::loncommon::help_open_topic($other, shift,
592: undef, undef, 600) .
593: '</td><td>';
594: }
595: return '<table><tr><td>'.
596: $addOther .
597: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
598: undef,undef,600)
599: .'</td><td>'.
600: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
601: undef,undef,600)
602: .'</td></tr></table>';
1.44 bowersj2 603: }
1.37 matthew 604:
1.45 matthew 605: =pod
606:
1.112 bowersj2 607: =item * csv_translate($text)
1.37 matthew 608:
609: Translate $text to allow it to be output as a 'comma seperated values'
610: format.
611:
612: =cut
613:
614: sub csv_translate {
615: my $text = shift;
616: $text =~ s/\"/\"\"/g;
617: $text =~ s/\n//g;
618: return $text;
619: }
1.113 bowersj2 620:
621: =pod
622:
623: =item * change_content_javascript():
624:
625: This and the next function allow you to create small sections of an
626: otherwise static HTML page that you can update on the fly with
627: Javascript, even in Netscape 4.
628:
629: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
630: must be written to the HTML page once. It will prove the Javascript
631: function "change(name, content)". Calling the change function with the
632: name of the section
633: you want to update, matching the name passed to C<changable_area>, and
634: the new content you want to put in there, will put the content into
635: that area.
636:
637: B<Note>: Netscape 4 only reserves enough space for the changable area
638: to contain room for the original contents. You need to "make space"
639: for whatever changes you wish to make, and be B<sure> to check your
640: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
641: it's adequate for updating a one-line status display, but little more.
642: This script will set the space to 100% width, so you only need to
643: worry about height in Netscape 4.
644:
645: Modern browsers are much less limiting, and if you can commit to the
646: user not using Netscape 4, this feature may be used freely with
647: pretty much any HTML.
648:
649: =cut
650:
651: sub change_content_javascript {
652: # If we're on Netscape 4, we need to use Layer-based code
653: if ($ENV{'browser.type'} eq 'netscape' &&
654: $ENV{'browser.version'} =~ /^4\./) {
655: return (<<NETSCAPE4);
656: function change(name, content) {
657: doc = document.layers[name+"___escape"].layers[0].document;
658: doc.open();
659: doc.write(content);
660: doc.close();
661: }
662: NETSCAPE4
663: } else {
664: # Otherwise, we need to use semi-standards-compliant code
665: # (technically, "innerHTML" isn't standard but the equivalent
666: # is really scary, and every useful browser supports it
667: return (<<DOMBASED);
668: function change(name, content) {
669: element = document.getElementById(name);
670: element.innerHTML = content;
671: }
672: DOMBASED
673: }
674: }
675:
676: =pod
677:
678: =item * changable_area($name, $origContent):
679:
680: This provides a "changable area" that can be modified on the fly via
681: the Javascript code provided in C<change_content_javascript>. $name is
682: the name you will use to reference the area later; do not repeat the
683: same name on a given HTML page more then once. $origContent is what
684: the area will originally contain, which can be left blank.
685:
686: =cut
687:
688: sub changable_area {
689: my ($name, $origContent) = @_;
690:
691: if ($ENV{'browser.type'} eq 'netscape' &&
692: $ENV{'browser.version'} =~ /^4\./) {
693: # If this is netscape 4, we need to use the Layer tag
694: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
695: } else {
696: return "<span id='$name'>$origContent</span>";
697: }
698: }
699:
700: =pod
701:
702: =back
703:
704: =cut
1.37 matthew 705:
706: ###############################################################
1.33 matthew 707: ## Home server <option> list generating code ##
708: ###############################################################
1.35 matthew 709:
1.45 matthew 710: =pod
711:
1.112 bowersj2 712: =head1 Home Server option list generating code
713:
714: =over 4
715:
716: =item * get_domains()
1.35 matthew 717:
718: Returns an array containing each of the domains listed in the hosts.tab
719: file.
720:
721: =cut
722:
723: #-------------------------------------------
1.34 matthew 724: sub get_domains {
725: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
726: my @domains;
727: my %seen;
728: foreach (sort values(%Apache::lonnet::hostdom)) {
729: push (@domains,$_) unless $seen{$_}++;
730: }
731: return @domains;
732: }
1.88 www 733:
734: #-------------------------------------------
735:
736: =pod
737:
1.112 bowersj2 738: =item * select_form($defdom,$name,%hash)
1.88 www 739:
740: Returns a string containing a <select name='$name' size='1'> form to
741: allow a user to select options from a hash option_name => displayed text.
742: See lonrights.pm for an example invocation and use.
743:
744: =cut
745:
746: #-------------------------------------------
747: sub select_form {
748: my ($def,$name,%hash) = @_;
749: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1.128 albertel 750: my @keys;
751: if (exists($hash{'select_form_order'})) {
752: @keys=@{$hash{'select_form_order'}};
753: } else {
754: @keys=sort(keys(%hash));
755: }
756: foreach (@keys) {
1.88 www 757: $selectform.="<option value=\"$_\" ".
758: ($_ eq $def ? 'selected' : '').
1.119 www 759: ">".&mt($hash{$_})."</option>\n";
1.88 www 760: }
761: $selectform.="</select>";
762: return $selectform;
763: }
764:
1.163 ! www 765: sub select_level_form {
! 766: my ($deflevel,$name)=@_;
! 767: unless ($deflevel) { $deflevel=0; }
! 768: return &select_form($deflevel,$name,(
! 769: 0 => 'Not specified',
! 770: 1 => 'Grade 1',
! 771: 2 => 'Grade 2',
! 772: 3 => 'Grade 3',
! 773: 4 => 'Grade 4',
! 774: 5 => 'Grade 5',
! 775: 6 => 'Grade 6',
! 776: 7 => 'Grade 7',
! 777: 8 => 'Grade 8',
! 778: 9 => 'Grade 9',
! 779: 10 => 'Grade 10',
! 780: 11 => 'Grade 11',
! 781: 12 => 'Grade 12',
! 782: 13 => 'Grade 13',
! 783: 14 => '100 Level',
! 784: 15 => '200 Level',
! 785: 16 => '300 Level',
! 786: 17 => '400 Level',
! 787: 18 => 'Graduate Level'));
! 788: }
1.35 matthew 789: #-------------------------------------------
790:
1.45 matthew 791: =pod
792:
1.112 bowersj2 793: =item * select_dom_form($defdom,$name,$includeempty)
1.35 matthew 794:
795: Returns a string containing a <select name='$name' size='1'> form to
796: allow a user to select the domain to preform an operation in.
797: See loncreateuser.pm for an example invocation and use.
798:
1.90 www 799: If the $includeempty flag is set, it also includes an empty choice ("no domain
800: selected");
801:
1.35 matthew 802: =cut
803:
804: #-------------------------------------------
1.34 matthew 805: sub select_dom_form {
1.90 www 806: my ($defdom,$name,$includeempty) = @_;
1.34 matthew 807: my @domains = get_domains();
1.90 www 808: if ($includeempty) { @domains=('',@domains); }
1.34 matthew 809: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
810: foreach (@domains) {
811: $selectdomain.="<option value=\"$_\" ".
812: ($_ eq $defdom ? 'selected' : '').
813: ">$_</option>\n";
814: }
815: $selectdomain.="</select>";
816: return $selectdomain;
817: }
818:
1.35 matthew 819: #-------------------------------------------
820:
1.45 matthew 821: =pod
822:
1.112 bowersj2 823: =item * get_library_servers($domain)
1.35 matthew 824:
825: Returns a hash which contains keys like '103l3' and values like
826: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
827: given $domain.
828:
829: =cut
830:
831: #-------------------------------------------
1.52 matthew 832: sub get_library_servers {
1.33 matthew 833: my $domain = shift;
1.52 matthew 834: my %library_servers;
1.33 matthew 835: foreach (keys(%Apache::lonnet::libserv)) {
836: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1.52 matthew 837: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1.33 matthew 838: }
839: }
1.52 matthew 840: return %library_servers;
1.33 matthew 841: }
842:
1.35 matthew 843: #-------------------------------------------
844:
1.45 matthew 845: =pod
846:
1.112 bowersj2 847: =item * home_server_option_list($domain)
1.35 matthew 848:
849: returns a string which contains an <option> list to be used in a
850: <select> form input. See loncreateuser.pm for an example.
851:
852: =cut
853:
854: #-------------------------------------------
1.33 matthew 855: sub home_server_option_list {
856: my $domain = shift;
1.52 matthew 857: my %servers = &get_library_servers($domain);
1.33 matthew 858: my $result = '';
859: foreach (sort keys(%servers)) {
860: $result.=
861: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
862: }
863: return $result;
864: }
1.112 bowersj2 865:
866: =pod
867:
868: =back
869:
870: =cut
1.87 matthew 871:
872: ###############################################################
1.112 bowersj2 873: ## Decoding User Agent ##
1.87 matthew 874: ###############################################################
875:
876: =pod
877:
1.112 bowersj2 878: =head1 Decoding the User Agent
879:
880: =over 4
881:
882: =item * &decode_user_agent()
1.87 matthew 883:
884: Inputs: $r
885:
886: Outputs:
887:
888: =over 4
889:
1.112 bowersj2 890: =item * $httpbrowser
1.87 matthew 891:
1.112 bowersj2 892: =item * $clientbrowser
1.87 matthew 893:
1.112 bowersj2 894: =item * $clientversion
1.87 matthew 895:
1.112 bowersj2 896: =item * $clientmathml
1.87 matthew 897:
1.112 bowersj2 898: =item * $clientunicode
1.87 matthew 899:
1.112 bowersj2 900: =item * $clientos
1.87 matthew 901:
902: =back
903:
1.157 matthew 904: =back
905:
1.87 matthew 906: =cut
907:
908: ###############################################################
909: ###############################################################
910: sub decode_user_agent {
911: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
912: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
913: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
914: my $clientbrowser='unknown';
915: my $clientversion='0';
916: my $clientmathml='';
917: my $clientunicode='0';
918: for (my $i=0;$i<=$#browsertype;$i++) {
919: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
920: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
921: $clientbrowser=$bname;
922: $httpbrowser=~/$vreg/i;
923: $clientversion=$1;
924: $clientmathml=($clientversion>=$minv);
925: $clientunicode=($clientversion>=$univ);
926: }
927: }
928: my $clientos='unknown';
929: if (($httpbrowser=~/linux/i) ||
930: ($httpbrowser=~/unix/i) ||
931: ($httpbrowser=~/ux/i) ||
932: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
933: if (($httpbrowser=~/vax/i) ||
934: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
935: if ($httpbrowser=~/next/i) { $clientos='next'; }
936: if (($httpbrowser=~/mac/i) ||
937: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
938: if ($httpbrowser=~/win/i) { $clientos='win'; }
939: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
940: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
941: $clientunicode,$clientos,);
942: }
943:
1.32 matthew 944: ###############################################################
945: ## Authentication changing form generation subroutines ##
946: ###############################################################
947: ##
948: ## All of the authform_xxxxxxx subroutines take their inputs in a
949: ## hash, and have reasonable default values.
950: ##
951: ## formname = the name given in the <form> tag.
1.35 matthew 952: #-------------------------------------------
953:
1.45 matthew 954: =pod
955:
1.112 bowersj2 956: =head1 Authentication Routines
957:
958: =over 4
959:
960: =item * authform_xxxxxx
1.35 matthew 961:
962: The authform_xxxxxx subroutines provide javascript and html forms which
963: handle some of the conveniences required for authentication forms.
964: This is not an optimal method, but it works.
965:
966: See loncreateuser.pm for invocation and use examples.
967:
968: =over 4
969:
1.112 bowersj2 970: =item * authform_header
1.35 matthew 971:
1.112 bowersj2 972: =item * authform_authorwarning
1.35 matthew 973:
1.112 bowersj2 974: =item * authform_nochange
1.35 matthew 975:
1.112 bowersj2 976: =item * authform_kerberos
1.35 matthew 977:
1.112 bowersj2 978: =item * authform_internal
1.35 matthew 979:
1.112 bowersj2 980: =item * authform_filesystem
1.35 matthew 981:
982: =back
983:
1.157 matthew 984: =back
985:
1.35 matthew 986: =cut
987:
988: #-------------------------------------------
1.32 matthew 989: sub authform_header{
990: my %in = (
991: formname => 'cu',
1.80 albertel 992: kerb_def_dom => '',
1.32 matthew 993: @_,
994: );
995: $in{'formname'} = 'document.' . $in{'formname'};
996: my $result='';
1.80 albertel 997:
998: #---------------------------------------------- Code for upper case translation
999: my $Javascript_toUpperCase;
1000: unless ($in{kerb_def_dom}) {
1001: $Javascript_toUpperCase =<<"END";
1002: switch (choice) {
1003: case 'krb': currentform.elements[choicearg].value =
1004: currentform.elements[choicearg].value.toUpperCase();
1005: break;
1006: default:
1007: }
1008: END
1009: } else {
1010: $Javascript_toUpperCase = "";
1011: }
1012:
1.32 matthew 1013: $result.=<<"END";
1014: var current = new Object();
1015: current.radiovalue = 'nochange';
1016: current.argfield = null;
1017:
1018: function changed_radio(choice,currentform) {
1019: var choicearg = choice + 'arg';
1020: // If a radio button in changed, we need to change the argfield
1021: if (current.radiovalue != choice) {
1022: current.radiovalue = choice;
1023: if (current.argfield != null) {
1024: currentform.elements[current.argfield].value = '';
1025: }
1026: if (choice == 'nochange') {
1027: current.argfield = null;
1028: } else {
1029: current.argfield = choicearg;
1030: switch(choice) {
1031: case 'krb':
1032: currentform.elements[current.argfield].value =
1033: "$in{'kerb_def_dom'}";
1034: break;
1035: default:
1036: break;
1037: }
1038: }
1039: }
1040: return;
1041: }
1.22 www 1042:
1.32 matthew 1043: function changed_text(choice,currentform) {
1044: var choicearg = choice + 'arg';
1045: if (currentform.elements[choicearg].value !='') {
1.80 albertel 1046: $Javascript_toUpperCase
1.32 matthew 1047: // clear old field
1048: if ((current.argfield != choicearg) && (current.argfield != null)) {
1049: currentform.elements[current.argfield].value = '';
1050: }
1051: current.argfield = choicearg;
1052: }
1053: set_auth_radio_buttons(choice,currentform);
1054: return;
1.20 www 1055: }
1.32 matthew 1056:
1057: function set_auth_radio_buttons(newvalue,currentform) {
1058: var i=0;
1059: while (i < currentform.login.length) {
1060: if (currentform.login[i].value == newvalue) { break; }
1061: i++;
1062: }
1063: if (i == currentform.login.length) {
1064: return;
1065: }
1066: current.radiovalue = newvalue;
1067: currentform.login[i].checked = true;
1068: return;
1069: }
1070: END
1071: return $result;
1072: }
1073:
1074: sub authform_authorwarning{
1075: my $result='';
1.144 matthew 1076: $result='<i>'.
1077: &mt('As a general rule, only authors or co-authors should be '.
1078: 'filesystem authenticated '.
1079: '(which allows access to the server filesystem).')."</i>\n";
1.32 matthew 1080: return $result;
1081: }
1082:
1083: sub authform_nochange{
1084: my %in = (
1085: formname => 'document.cu',
1086: kerb_def_dom => 'MSU.EDU',
1087: @_,
1088: );
1.144 matthew 1089: my $result = &mt('[_1] Do not change login data',
1090: '<input type="radio" name="login" value="nochange" '.
1091: 'checked="checked" onclick="'.
1092: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1.32 matthew 1093: return $result;
1094: }
1095:
1096: sub authform_kerberos{
1097: my %in = (
1098: formname => 'document.cu',
1099: kerb_def_dom => 'MSU.EDU',
1.80 albertel 1100: kerb_def_auth => 'krb4',
1.32 matthew 1101: @_,
1102: );
1.144 matthew 1103: my ($check4,$check5);
1.80 albertel 1104: if ($in{'kerb_def_auth'} eq 'krb5') {
1105: $check5 = " checked=\"on\"";
1106: } else {
1107: $check4 = " checked=\"on\"";
1108: }
1.144 matthew 1109: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1110: my $result .= &mt
1111: ('[_1] Kerberos authenticated with domain [_2] '.
1112: '[_3] Version 4 [_4] Version 5',
1113: '<input type="radio" name="login" value="krb" '.
1114: 'onclick="'.$jscall.'" onchange="'.$jscall.'" />',
1115: '<input type="text" size="10" name="krbarg" '.
1116: 'value="'.$in{'kerb_def_dom'}.'" '.
1117: 'onchange="'.$jscall.'" />',
1118: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1119: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1.32 matthew 1120: return $result;
1121: }
1122:
1123: sub authform_internal{
1124: my %args = (
1125: formname => 'document.cu',
1126: kerb_def_dom => 'MSU.EDU',
1127: @_,
1128: );
1.144 matthew 1129: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1130: my $result.=&mt
1131: ('[_1] Internally authenticated (with initial password [_2])',
1132: '<input type="radio" name="login" value="int" '.
1133: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1134: '<input type="text" size="10" name="intarg" value="" '.
1135: 'onchange="'.$jscall.'" />');
1.32 matthew 1136: return $result;
1137: }
1138:
1139: sub authform_local{
1140: my %in = (
1141: formname => 'document.cu',
1142: kerb_def_dom => 'MSU.EDU',
1143: @_,
1144: );
1.144 matthew 1145: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1.160 matthew 1146: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1.144 matthew 1147: '<input type="radio" name="login" value="loc" '.
1148: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1149: '<input type="text" size="10" name="locarg" value="" '.
1150: 'onchange="'.$jscall.'" />');
1.32 matthew 1151: return $result;
1152: }
1153:
1154: sub authform_filesystem{
1155: my %in = (
1156: formname => 'document.cu',
1157: kerb_def_dom => 'MSU.EDU',
1158: @_,
1159: );
1.144 matthew 1160: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1161: my $result.= &mt
1162: ('[_1] Filesystem Authenticated (with initial password [_2])',
1163: '<input type="radio" name="login" value="fsys" '.
1164: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1165: '<input type="text" size="10" name="fsysarg" value="" '.
1166: 'onchange="'.$jscall.'" />');
1.32 matthew 1167: return $result;
1168: }
1169:
1.80 albertel 1170: ###############################################################
1171: ## Get Authentication Defaults for Domain ##
1172: ###############################################################
1173:
1174: =pod
1175:
1.112 bowersj2 1176: =head1 Domains and Authentication
1177:
1178: Returns default authentication type and an associated argument as
1179: listed in file 'domain.tab'.
1180:
1181: =over 4
1182:
1183: =item * get_auth_defaults
1.80 albertel 1184:
1185: get_auth_defaults($target_domain) returns the default authentication
1186: type and an associated argument (initial password or a kerberos domain).
1187: These values are stored in lonTabs/domain.tab
1188:
1189: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1190:
1191: If target_domain is not found in domain.tab, returns nothing ('').
1192:
1193: =cut
1194:
1195: #-------------------------------------------
1196: sub get_auth_defaults {
1197: my $domain=shift;
1198: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1199: }
1200: ###############################################################
1201: ## End Get Authentication Defaults for Domain ##
1202: ###############################################################
1203:
1204: ###############################################################
1205: ## Get Kerberos Defaults for Domain ##
1206: ###############################################################
1207: ##
1208: ## Returns default kerberos version and an associated argument
1209: ## as listed in file domain.tab. If not listed, provides
1210: ## appropriate default domain and kerberos version.
1211: ##
1212: #-------------------------------------------
1213:
1214: =pod
1215:
1.112 bowersj2 1216: =item * get_kerberos_defaults
1.80 albertel 1217:
1218: get_kerberos_defaults($target_domain) returns the default kerberos
1219: version and domain. If not found in domain.tabs, it defaults to
1220: version 4 and the domain of the server.
1221:
1222: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1223:
1224: =cut
1225:
1226: #-------------------------------------------
1227: sub get_kerberos_defaults {
1228: my $domain=shift;
1229: my ($krbdef,$krbdefdom) =
1230: &Apache::loncommon::get_auth_defaults($domain);
1231: unless ($krbdef =~/^krb/ && $krbdefdom) {
1232: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1233: my $krbdefdom=$1;
1234: $krbdefdom=~tr/a-z/A-Z/;
1235: $krbdef = "krb4";
1236: }
1237: return ($krbdef,$krbdefdom);
1238: }
1.112 bowersj2 1239:
1240: =pod
1241:
1242: =back
1243:
1244: =cut
1.32 matthew 1245:
1.46 matthew 1246: ###############################################################
1247: ## Thesaurus Functions ##
1248: ###############################################################
1.20 www 1249:
1.46 matthew 1250: =pod
1.20 www 1251:
1.112 bowersj2 1252: =head1 Thesaurus Functions
1253:
1254: =over 4
1255:
1256: =item * initialize_keywords
1.46 matthew 1257:
1258: Initializes the package variable %Keywords if it is empty. Uses the
1259: package variable $thesaurus_db_file.
1260:
1261: =cut
1262:
1263: ###################################################
1264:
1265: sub initialize_keywords {
1266: return 1 if (scalar keys(%Keywords));
1267: # If we are here, %Keywords is empty, so fill it up
1268: # Make sure the file we need exists...
1269: if (! -e $thesaurus_db_file) {
1270: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1271: " failed because it does not exist");
1272: return 0;
1273: }
1274: # Set up the hash as a database
1275: my %thesaurus_db;
1276: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1277: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1278: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1279: $thesaurus_db_file);
1280: return 0;
1281: }
1282: # Get the average number of appearances of a word.
1283: my $avecount = $thesaurus_db{'average.count'};
1284: # Put keywords (those that appear > average) into %Keywords
1285: while (my ($word,$data)=each (%thesaurus_db)) {
1286: my ($count,undef) = split /:/,$data;
1287: $Keywords{$word}++ if ($count > $avecount);
1288: }
1289: untie %thesaurus_db;
1290: # Remove special values from %Keywords.
1291: foreach ('total.count','average.count') {
1292: delete($Keywords{$_}) if (exists($Keywords{$_}));
1293: }
1294: return 1;
1295: }
1296:
1297: ###################################################
1298:
1299: =pod
1300:
1.112 bowersj2 1301: =item * keyword($word)
1.46 matthew 1302:
1303: Returns true if $word is a keyword. A keyword is a word that appears more
1304: than the average number of times in the thesaurus database. Calls
1305: &initialize_keywords
1306:
1307: =cut
1308:
1309: ###################################################
1.20 www 1310:
1311: sub keyword {
1.46 matthew 1312: return if (!&initialize_keywords());
1313: my $word=lc(shift());
1314: $word=~s/\W//g;
1315: return exists($Keywords{$word});
1.20 www 1316: }
1.46 matthew 1317:
1318: ###############################################################
1319:
1320: =pod
1.20 www 1321:
1.112 bowersj2 1322: =item * get_related_words
1.46 matthew 1323:
1.160 matthew 1324: Look up a word in the thesaurus. Takes a scalar argument and returns
1.46 matthew 1325: an array of words. If the keyword is not in the thesaurus, an empty array
1326: will be returned. The order of the words returned is determined by the
1327: database which holds them.
1328:
1329: Uses global $thesaurus_db_file.
1330:
1331: =cut
1332:
1333: ###############################################################
1334: sub get_related_words {
1335: my $keyword = shift;
1336: my %thesaurus_db;
1337: if (! -e $thesaurus_db_file) {
1338: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1339: "failed because the file does not exist");
1340: return ();
1341: }
1342: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1343: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1344: return ();
1345: }
1346: my @Words=();
1347: if (exists($thesaurus_db{$keyword})) {
1348: $_ = $thesaurus_db{$keyword};
1349: (undef,@Words) = split/:/; # The first element is the number of times
1350: # the word appears. We do not need it now.
1351: for (my $i=0;$i<=$#Words;$i++) {
1352: ($Words[$i],undef)= split/\,/,$Words[$i];
1.20 www 1353: }
1354: }
1.46 matthew 1355: untie %thesaurus_db;
1356: return @Words;
1.14 harris41 1357: }
1.46 matthew 1358:
1.112 bowersj2 1359: =pod
1360:
1361: =back
1362:
1363: =cut
1.61 www 1364:
1365: # -------------------------------------------------------------- Plaintext name
1.81 albertel 1366: =pod
1367:
1.112 bowersj2 1368: =head1 User Name Functions
1369:
1370: =over 4
1371:
1372: =item * plainname($uname,$udom)
1.81 albertel 1373:
1.112 bowersj2 1374: Takes a users logon name and returns it as a string in
1375: "first middle last generation" form
1.81 albertel 1376:
1377: =cut
1.61 www 1378:
1.81 albertel 1379: ###############################################################
1.61 www 1380: sub plainname {
1381: my ($uname,$udom)=@_;
1382: my %names=&Apache::lonnet::get('environment',
1383: ['firstname','middlename','lastname','generation'],
1384: $udom,$uname);
1.62 www 1385: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1.61 www 1386: $names{'lastname'}.' '.$names{'generation'};
1.62 www 1387: $name=~s/\s+$//;
1388: $name=~s/\s+/ /g;
1389: return $name;
1.61 www 1390: }
1.66 www 1391:
1392: # -------------------------------------------------------------------- Nickname
1.81 albertel 1393: =pod
1394:
1.112 bowersj2 1395: =item * nickname($uname,$udom)
1.81 albertel 1396:
1397: Gets a users name and returns it as a string as
1398:
1399: ""nickname""
1.66 www 1400:
1.81 albertel 1401: if the user has a nickname or
1402:
1403: "first middle last generation"
1404:
1405: if the user does not
1406:
1407: =cut
1.66 www 1408:
1409: sub nickname {
1410: my ($uname,$udom)=@_;
1411: my %names=&Apache::lonnet::get('environment',
1412: ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
1.68 albertel 1413: my $name=$names{'nickname'};
1.66 www 1414: if ($name) {
1415: $name='"'.$name.'"';
1416: } else {
1417: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1418: $names{'lastname'}.' '.$names{'generation'};
1419: $name=~s/\s+$//;
1420: $name=~s/\s+/ /g;
1421: }
1422: return $name;
1423: }
1424:
1.61 www 1425:
1426: # ------------------------------------------------------------------ Screenname
1.81 albertel 1427:
1428: =pod
1429:
1.112 bowersj2 1430: =item * screenname($uname,$udom)
1.81 albertel 1431:
1432: Gets a users screenname and returns it as a string
1433:
1434: =cut
1.61 www 1435:
1436: sub screenname {
1437: my ($uname,$udom)=@_;
1438: my %names=
1439: &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1.68 albertel 1440: return $names{'screenname'};
1.62 www 1441: }
1442:
1443: # ------------------------------------------------------------- Message Wrapper
1444:
1445: sub messagewrapper {
1446: my ($link,$un,$do)=@_;
1447: return
1448: "<a href='/adm/email?compose=individual&recname=$un&recdom=$do'>$link</a>";
1.74 www 1449: }
1450: # --------------------------------------------------------------- Notes Wrapper
1451:
1452: sub noteswrapper {
1453: my ($link,$un,$do)=@_;
1454: return
1455: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1.62 www 1456: }
1457: # ------------------------------------------------------------- Aboutme Wrapper
1458:
1459: sub aboutmewrapper {
1.69 matthew 1460: my ($link,$username,$domain)=@_;
1461: return "<a href='/adm/$domain/$username/aboutme'>$link</a>";
1.62 www 1462: }
1463:
1464: # ------------------------------------------------------------ Syllabus Wrapper
1465:
1466:
1467: sub syllabuswrapper {
1.109 matthew 1468: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1469: if ($fontcolor) {
1470: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1471: }
1472: return "<a href='/public/$domain/$coursedir/syllabus'>$linktext</a>";
1.61 www 1473: }
1.14 harris41 1474:
1.112 bowersj2 1475: =pod
1476:
1477: =back
1478:
1479: =head1 Access .tab File Data
1480:
1481: =over 4
1482:
1483: =item * languageids()
1484:
1485: returns list of all language ids
1486:
1487: =cut
1488:
1.14 harris41 1489: sub languageids {
1.16 harris41 1490: return sort(keys(%language));
1.14 harris41 1491: }
1492:
1.112 bowersj2 1493: =pod
1494:
1495: =item * languagedescription()
1496:
1497: returns description of a specified language id
1498:
1499: =cut
1500:
1.14 harris41 1501: sub languagedescription {
1.125 www 1502: my $code=shift;
1503: return ($supported_language{$code}?'* ':'').
1504: $language{$code}.
1.126 www 1505: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1.145 www 1506: }
1507:
1508: sub plainlanguagedescription {
1509: my $code=shift;
1510: return $language{$code};
1511: }
1512:
1513: sub supportedlanguagecode {
1514: my $code=shift;
1515: return $supported_language{$code};
1.97 www 1516: }
1517:
1.112 bowersj2 1518: =pod
1519:
1520: =item * copyrightids()
1521:
1522: returns list of all copyrights
1523:
1524: =cut
1525:
1526: sub copyrightids {
1527: return sort(keys(%cprtag));
1528: }
1529:
1530: =pod
1531:
1532: =item * copyrightdescription()
1533:
1534: returns description of a specified copyright id
1535:
1536: =cut
1537:
1538: sub copyrightdescription {
1539: return $cprtag{shift(@_)};
1540: }
1541:
1542: =pod
1543:
1544: =item * filecategories()
1545:
1546: returns list of all file categories
1547:
1548: =cut
1549:
1550: sub filecategories {
1551: return sort(keys(%category_extensions));
1552: }
1553:
1554: =pod
1555:
1556: =item * filecategorytypes()
1557:
1558: returns list of file types belonging to a given file
1559: category
1560:
1561: =cut
1562:
1563: sub filecategorytypes {
1564: return @{$category_extensions{lc($_[0])}};
1565: }
1566:
1567: =pod
1568:
1569: =item * fileembstyle()
1570:
1571: returns embedding style for a specified file type
1572:
1573: =cut
1574:
1575: sub fileembstyle {
1576: return $fe{lc(shift(@_))};
1577: }
1578:
1579: =pod
1580:
1581: =item * filedescription()
1582:
1583: returns description for a specified file type
1584:
1585: =cut
1586:
1587: sub filedescription {
1588: return $fd{lc(shift(@_))};
1589: }
1590:
1591: =pod
1592:
1593: =item * filedescriptionex()
1594:
1595: returns description for a specified file type with
1596: extra formatting
1597:
1598: =cut
1599:
1600: sub filedescriptionex {
1601: my $ex=shift;
1602: return '.'.$ex.' '.$fd{lc($ex)};
1603: }
1604:
1605: # End of .tab access
1606: =pod
1607:
1608: =back
1609:
1610: =cut
1611:
1612: # ------------------------------------------------------------------ File Types
1613: sub fileextensions {
1614: return sort(keys(%fe));
1615: }
1616:
1.97 www 1617: # ----------------------------------------------------------- Display Languages
1618: # returns a hash with all desired display languages
1619: #
1620:
1621: sub display_languages {
1622: my %languages=();
1.118 www 1623: foreach (&preferred_languages()) {
1624: $languages{$_}=1;
1.97 www 1625: }
1626: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
1627: if ($ENV{'form.displaylanguage'}) {
1628: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
1629: $languages{$_}=1;
1630: }
1631: }
1632: return %languages;
1.14 harris41 1633: }
1634:
1.117 www 1635: sub preferred_languages {
1636: my @languages=();
1637: if ($ENV{'environment.languages'}) {
1638: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
1639: }
1640: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
1641: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
1642: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
1.118 www 1643: }
1.162 www 1644: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
1645: if ($browser) {
1646: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
1647: }
1.118 www 1648: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
1649: @languages=(@languages,
1650: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
1651: }
1652: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
1653: @languages=(@languages,
1654: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
1655: }
1656: if ($Apache::lonnet::domain_lang_def{
1657: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
1658: @languages=(@languages,
1659: $Apache::lonnet::domain_lang_def{
1660: $Apache::lonnet::perlvar{'lonDefDomain'}});
1661: }
1662: # turn "en-ca" into "en-ca,en"
1663: my @genlanguages;
1664: foreach (@languages) {
1665: unless ($_=~/\w/) { next; }
1666: push (@genlanguages,$_);
1667: if ($_=~/(\-|\_)/) {
1668: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
1669: }
1670: }
1671: return @genlanguages;
1.117 www 1672: }
1673:
1.112 bowersj2 1674: ###############################################################
1675: ## Student Answer Attempts ##
1676: ###############################################################
1677:
1678: =pod
1679:
1680: =head1 Alternate Problem Views
1681:
1682: =over 4
1683:
1684: =item * get_previous_attempt($symb, $username, $domain, $course,
1685: $getattempt, $regexp, $gradesub)
1686:
1687: Return string with previous attempt on problem. Arguments:
1688:
1689: =over 4
1690:
1691: =item * $symb: Problem, including path
1692:
1693: =item * $username: username of the desired student
1694:
1695: =item * $domain: domain of the desired student
1.14 harris41 1696:
1.112 bowersj2 1697: =item * $course: Course ID
1.14 harris41 1698:
1.112 bowersj2 1699: =item * $getattempt: Leave blank for all attempts, otherwise put
1700: something
1.14 harris41 1701:
1.112 bowersj2 1702: =item * $regexp: if string matches this regexp, the string will be
1703: sent to $gradesub
1.14 harris41 1704:
1.112 bowersj2 1705: =item * $gradesub: routine that processes the string if it matches $regexp
1.14 harris41 1706:
1.112 bowersj2 1707: =back
1.14 harris41 1708:
1.112 bowersj2 1709: The output string is a table containing all desired attempts, if any.
1.16 harris41 1710:
1.112 bowersj2 1711: =cut
1.1 albertel 1712:
1713: sub get_previous_attempt {
1.43 ng 1714: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
1.1 albertel 1715: my $prevattempts='';
1.43 ng 1716: no strict 'refs';
1.1 albertel 1717: if ($symb) {
1.3 albertel 1718: my (%returnhash)=
1719: &Apache::lonnet::restore($symb,$course,$domain,$username);
1.1 albertel 1720: if ($returnhash{'version'}) {
1721: my %lasthash=();
1722: my $version;
1723: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.19 harris41 1724: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
1.1 albertel 1725: $lasthash{$_}=$returnhash{$version.':'.$_};
1.19 harris41 1726: }
1.1 albertel 1727: }
1.43 ng 1728: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
1.40 ng 1729: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
1.16 harris41 1730: foreach (sort(keys %lasthash)) {
1.31 albertel 1731: my ($ign,@parts) = split(/\./,$_);
1.41 ng 1732: if ($#parts > 0) {
1.31 albertel 1733: my $data=$parts[-1];
1734: pop(@parts);
1.40 ng 1735: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
1.31 albertel 1736: } else {
1.41 ng 1737: if ($#parts == 0) {
1738: $prevattempts.='<th>'.$parts[0].'</th>';
1739: } else {
1740: $prevattempts.='<th>'.$ign.'</th>';
1741: }
1.31 albertel 1742: }
1.16 harris41 1743: }
1.40 ng 1744: if ($getattempt eq '') {
1745: for ($version=1;$version<=$returnhash{'version'};$version++) {
1746: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
1747: foreach (sort(keys %lasthash)) {
1748: my $value;
1749: if ($_ =~ /timestamp/) {
1750: $value=scalar(localtime($returnhash{$version.':'.$_}));
1751: } else {
1752: $value=$returnhash{$version.':'.$_};
1753: }
1.142 albertel 1754: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
1.40 ng 1755: }
1756: }
1.1 albertel 1757: }
1.40 ng 1758: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
1.16 harris41 1759: foreach (sort(keys %lasthash)) {
1.5 albertel 1760: my $value;
1761: if ($_ =~ /timestamp/) {
1762: $value=scalar(localtime($lasthash{$_}));
1763: } else {
1764: $value=$lasthash{$_};
1765: }
1.142 albertel 1766: $value=&Apache::lonnet::unescape($value);
1.49 ng 1767: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
1.40 ng 1768: $prevattempts.='<td>'.$value.' </td>';
1.16 harris41 1769: }
1.40 ng 1770: $prevattempts.='</tr></table></td></tr></table>';
1.1 albertel 1771: } else {
1772: $prevattempts='Nothing submitted - no attempts.';
1773: }
1774: } else {
1775: $prevattempts='No data.';
1776: }
1.10 albertel 1777: }
1778:
1.107 albertel 1779: sub relative_to_absolute {
1780: my ($url,$output)=@_;
1781: my $parser=HTML::TokeParser->new(\$output);
1782: my $token;
1783: my $thisdir=$url;
1784: my @rlinks=();
1785: while ($token=$parser->get_token) {
1786: if ($token->[0] eq 'S') {
1787: if ($token->[1] eq 'a') {
1788: if ($token->[2]->{'href'}) {
1789: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
1790: }
1791: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
1792: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
1793: } elsif ($token->[1] eq 'base') {
1794: $thisdir=$token->[2]->{'href'};
1795: }
1796: }
1797: }
1798: $thisdir=~s-/[^/]*$--;
1799: foreach (@rlinks) {
1800: unless (($_=~/^http:\/\//i) ||
1801: ($_=~/^\//) ||
1802: ($_=~/^javascript:/i) ||
1803: ($_=~/^mailto:/i) ||
1804: ($_=~/^\#/)) {
1805: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
1806: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
1807: }
1808: }
1809: # -------------------------------------------------- Deal with Applet codebases
1810: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
1811: return $output;
1812: }
1813:
1.112 bowersj2 1814: =pod
1815:
1816: =item * get_student_view
1817:
1818: show a snapshot of what student was looking at
1819:
1820: =cut
1821:
1.10 albertel 1822: sub get_student_view {
1.64 sakharuk 1823: my ($symb,$username,$domain,$courseid,$target) = @_;
1.114 www 1824: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
1.10 albertel 1825: my (%old,%moreenv);
1826: my @elements=('symb','courseid','domain','username');
1827: foreach my $element (@elements) {
1828: $old{$element}=$ENV{'form.grade_'.$element};
1829: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1830: }
1.64 sakharuk 1831: if ($target eq 'tex') {$moreenv{'form.grade_target'} = 'tex';}
1.11 albertel 1832: &Apache::lonnet::appenv(%moreenv);
1.107 albertel 1833: $feedurl=&Apache::lonnet::clutter($feedurl);
1834: my $userview=&Apache::lonnet::ssi_body($feedurl);
1.11 albertel 1835: &Apache::lonnet::delenv('form.grade_');
1836: foreach my $element (@elements) {
1837: $ENV{'form.grade_'.$element}=$old{$element};
1838: }
1839: $userview=~s/\<body[^\>]*\>//gi;
1840: $userview=~s/\<\/body\>//gi;
1841: $userview=~s/\<html\>//gi;
1842: $userview=~s/\<\/html\>//gi;
1843: $userview=~s/\<head\>//gi;
1844: $userview=~s/\<\/head\>//gi;
1845: $userview=~s/action\s*\=/would_be_action\=/gi;
1.107 albertel 1846: $userview=&relative_to_absolute($feedurl,$userview);
1.11 albertel 1847: return $userview;
1848: }
1849:
1.112 bowersj2 1850: =pod
1851:
1852: =item * get_student_answers()
1853:
1854: show a snapshot of how student was answering problem
1855:
1856: =cut
1857:
1.11 albertel 1858: sub get_student_answers {
1.100 sakharuk 1859: my ($symb,$username,$domain,$courseid,%form) = @_;
1.114 www 1860: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
1.11 albertel 1861: my (%old,%moreenv);
1862: my @elements=('symb','courseid','domain','username');
1863: foreach my $element (@elements) {
1864: $old{$element}=$ENV{'form.grade_'.$element};
1865: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1866: }
1867: $moreenv{'form.grade_target'}='answer';
1.10 albertel 1868: &Apache::lonnet::appenv(%moreenv);
1.100 sakharuk 1869: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%form);
1.10 albertel 1870: &Apache::lonnet::delenv('form.grade_');
1871: foreach my $element (@elements) {
1872: $ENV{'form.grade_'.$element}=$old{$element};
1873: }
1874: return $userview;
1.1 albertel 1875: }
1.116 albertel 1876:
1877: =pod
1878:
1879: =item * &submlink()
1880:
1881: Inputs: $text $uname $udom $symb
1882:
1883: Returns: A link to grades.pm such as to see the SUBM view of a student
1884:
1885: =cut
1886:
1887: ###############################################
1888: sub submlink {
1889: my ($text,$uname,$udom,$symb)=@_;
1890: if (!($uname && $udom)) {
1891: (my $cursymb, my $courseid,$udom,$uname)=
1892: &Apache::lonxml::whichuser($symb);
1893: if (!$symb) { $symb=$cursymb; }
1894: }
1895: if (!$symb) { $symb=&symbread(); }
1896: return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
1897: '&userdom='.$udom.'&command=submission">'.$text.'</a>';
1898: }
1899: ##############################################
1.37 matthew 1900:
1.112 bowersj2 1901: =pod
1902:
1903: =back
1904:
1905: =cut
1906:
1.37 matthew 1907: ###############################################
1.51 www 1908:
1909:
1910: sub timehash {
1911: my @ltime=localtime(shift);
1912: return ( 'seconds' => $ltime[0],
1913: 'minutes' => $ltime[1],
1914: 'hours' => $ltime[2],
1915: 'day' => $ltime[3],
1916: 'month' => $ltime[4]+1,
1917: 'year' => $ltime[5]+1900,
1918: 'weekday' => $ltime[6],
1919: 'dayyear' => $ltime[7]+1,
1920: 'dlsav' => $ltime[8] );
1921: }
1922:
1923: sub maketime {
1924: my %th=@_;
1925: return POSIX::mktime(
1926: ($th{'seconds'},$th{'minutes'},$th{'hours'},
1927: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
1928: }
1929:
1.70 www 1930:
1931: #########################################
1932: #
1933: # Retro-fixing of un-backward-compatible time format
1934:
1935: sub unsqltime {
1936: my $timestamp=shift;
1937: if ($timestamp=~/^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/) {
1938: $timestamp=&maketime(
1939: 'year'=>$1,'month'=>$2,'day'=>$3,
1940: 'hours'=>$4,'minutes'=>$5,'seconds'=>$6);
1941: }
1942: return $timestamp;
1943: }
1944:
1945: #########################################
1.51 www 1946:
1947: sub findallcourses {
1948: my %courses=();
1949: my $now=time;
1950: foreach (keys %ENV) {
1951: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
1952: my ($starttime,$endtime)=$ENV{$_};
1953: my $active=1;
1954: if ($starttime) {
1955: if ($now<$starttime) { $active=0; }
1956: }
1957: if ($endtime) {
1958: if ($now>$endtime) { $active=0; }
1959: }
1960: if ($active) { $courses{$1.'_'.$2}=1; }
1961: }
1962: }
1963: return keys %courses;
1964: }
1.37 matthew 1965:
1.54 www 1966: ###############################################
1.60 matthew 1967: ###############################################
1968:
1969: =pod
1970:
1.112 bowersj2 1971: =head1 Domain Template Functions
1972:
1973: =over 4
1974:
1975: =item * &determinedomain()
1.60 matthew 1976:
1977: Inputs: $domain (usually will be undef)
1978:
1.63 www 1979: Returns: Determines which domain should be used for designs
1.60 matthew 1980:
1981: =cut
1.54 www 1982:
1.60 matthew 1983: ###############################################
1.63 www 1984: sub determinedomain {
1985: my $domain=shift;
1986: if (! $domain) {
1.60 matthew 1987: # Determine domain if we have not been given one
1988: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
1989: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
1990: if ($ENV{'request.role.domain'}) {
1991: $domain=$ENV{'request.role.domain'};
1992: }
1993: }
1.63 www 1994: return $domain;
1995: }
1996: ###############################################
1997: =pod
1998:
1.112 bowersj2 1999: =item * &domainlogo()
1.63 www 2000:
2001: Inputs: $domain (usually will be undef)
2002:
2003: Returns: A link to a domain logo, if the domain logo exists.
2004: If the domain logo does not exist, a description of the domain.
2005:
2006: =cut
1.112 bowersj2 2007:
1.63 www 2008: ###############################################
2009: sub domainlogo {
2010: my $domain = &determinedomain(shift);
2011: # See if there is a logo
1.59 www 2012: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
1.83 albertel 2013: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2014: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2015: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
1.150 matthew 2016: '/adm/lonDomLogos/'.$domain.'.gif" alt="'.$domain.'" />';
1.60 matthew 2017: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2018: return $Apache::lonnet::domaindescription{$domain};
1.59 www 2019: } else {
1.60 matthew 2020: return '';
1.59 www 2021: }
2022: }
1.63 www 2023: ##############################################
2024:
2025: =pod
2026:
1.112 bowersj2 2027: =item * &designparm()
1.63 www 2028:
2029: Inputs: $which parameter; $domain (usually will be undef)
2030:
2031: Returns: value of designparamter $which
2032:
2033: =cut
1.112 bowersj2 2034:
1.63 www 2035: ##############################################
2036: sub designparm {
2037: my ($which,$domain)=@_;
1.110 www 2038: if ($ENV{'browser.blackwhite'} eq 'on') {
2039: if ($which=~/\.(font|alink|vlink|link)$/) {
2040: return '#000000';
2041: }
2042: if ($which=~/\.(pgbg|sidebg)$/) {
2043: return '#FFFFFF';
2044: }
2045: if ($which=~/\.tabbg$/) {
2046: return '#CCCCCC';
2047: }
2048: }
1.96 www 2049: if ($ENV{'environment.color.'.$which}) {
2050: return $ENV{'environment.color.'.$which};
2051: }
1.63 www 2052: $domain=&determinedomain($domain);
2053: if ($designhash{$domain.'.'.$which}) {
2054: return $designhash{$domain.'.'.$which};
2055: } else {
2056: return $designhash{'default.'.$which};
2057: }
2058: }
1.59 www 2059:
1.60 matthew 2060: ###############################################
2061: ###############################################
2062:
2063: =pod
2064:
1.112 bowersj2 2065: =back
2066:
2067: =head1 HTTP Helpers
2068:
2069: =over 4
2070:
2071: =item * &bodytag()
1.60 matthew 2072:
2073: Returns a uniform header for LON-CAPA web pages.
2074:
2075: Inputs:
2076:
1.112 bowersj2 2077: =over 4
2078:
2079: =item * $title, A title to be displayed on the page.
2080:
2081: =item * $function, the current role (can be undef).
2082:
2083: =item * $addentries, extra parameters for the <body> tag.
2084:
2085: =item * $bodyonly, if defined, only return the <body> tag.
2086:
2087: =item * $domain, if defined, force a given domain.
2088:
2089: =item * $forcereg, if page should register as content page (relevant for
1.86 www 2090: text interface only)
1.60 matthew 2091:
1.112 bowersj2 2092: =back
2093:
1.60 matthew 2094: Returns: A uniform header for LON-CAPA web pages.
2095: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2096: If $bodyonly is undef or zero, an html string containing a <body> tag and
2097: other decorations will be returned.
2098:
2099: =cut
2100:
1.54 www 2101: sub bodytag {
1.86 www 2102: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
1.117 www 2103: $title=&mt($title);
1.55 www 2104: unless ($function) {
2105: $function='student';
2106: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2107: $function='coordinator';
2108: }
2109: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2110: $function='admin';
2111: }
2112: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2113: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2114: $function='author';
2115: }
2116: }
1.63 www 2117: my $img=&designparm($function.'.img',$domain);
2118: my $pgbg=&designparm($function.'.pgbg',$domain);
2119: my $tabbg=&designparm($function.'.tabbg',$domain);
2120: my $font=&designparm($function.'.font',$domain);
2121: my $link=&designparm($function.'.link',$domain);
2122: my $alink=&designparm($function.'.alink',$domain);
2123: my $vlink=&designparm($function.'.vlink',$domain);
2124: my $sidebg=&designparm($function.'.sidebg',$domain);
1.110 www 2125: # Accessibility font enhance
2126: unless ($addentries) { $addentries=''; }
1.146 www 2127: my $addstyle='';
1.110 www 2128: if ($ENV{'browser.fontenhance'} eq 'on') {
1.146 www 2129: $addstyle=' font-size: x-large;';
1.110 www 2130: }
1.63 www 2131: # role and realm
1.55 www 2132: my ($role,$realm)
2133: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2134: # realm
1.54 www 2135: if ($ENV{'request.course.id'}) {
1.55 www 2136: $realm=
2137: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.54 www 2138: }
1.55 www 2139: unless ($realm) { $realm=' '; }
2140: # Set messages
1.60 matthew 2141: my $messages=&domainlogo($domain);
1.101 www 2142: # Port for miniserver
1.83 albertel 2143: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2144: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1.101 www 2145: # construct main body tag
1.60 matthew 2146: my $bodytag = <<END;
1.146 www 2147: <style>
1.147 www 2148: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
1.146 www 2149: a:focus { color: red; background: yellow }
2150: </style>
1.54 www 2151: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
1.151 www 2152: style="margin-top: 0px;$addstyle" $addentries>
1.60 matthew 2153: END
1.94 www 2154: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
1.150 matthew 2155: $lonhttpdPort.$img.'" alt="'.$function.'" />';
1.60 matthew 2156: if ($bodyonly) {
2157: return $bodytag;
1.79 www 2158: } elsif ($ENV{'browser.interface'} eq 'textual') {
1.95 www 2159: # Accessibility
1.93 www 2160: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2161: $forcereg).
2162: '<h1>LON-CAPA: '.$title.'</h1>';
2163: } elsif ($ENV{'environment.remote'} eq 'off') {
1.95 www 2164: # No Remote
2165: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2166: $forcereg).
1.151 www 2167: '<table bgcolor="'.$pgbg.'" width="100%" border="0" cellspacing="3" cellpadding="3"><tr><td bgcolor="'.$tabbg.'"><font face="Arial, Helvetica, sans-serif" size="+3" color="'.$font.'"><b>'.$title.
1.95 www 2168: '</b></font></td></tr></table>';
1.94 www 2169: }
1.95 www 2170:
1.93 www 2171: #
1.95 www 2172: # Top frame rendering, Remote is up
1.93 www 2173: #
1.94 www 2174: return(<<ENDBODY);
1.60 matthew 2175: $bodytag
1.55 www 2176: <table width="100%" cellspacing="0" border="0" cellpadding="0">
1.95 www 2177: <tr><td bgcolor="$sidebg">
1.94 www 2178: $upperleft</td>
1.95 www 2179: <td bgcolor="$sidebg" align="right">$messages </td>
1.55 www 2180: </tr>
1.54 www 2181: <tr>
1.55 www 2182: <td rowspan="3" bgcolor="$tabbg">
1.146 www 2183: <font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
2184: <td bgcolor="$tabbg" align="right">
2185: <font size="2" face="Arial, Helvetica, sans-serif">
1.54 www 2186: $ENV{'environment.firstname'}
2187: $ENV{'environment.middlename'}
2188: $ENV{'environment.lastname'}
2189: $ENV{'environment.generation'}
1.55 www 2190: </font>
1.54 www 2191: </td>
2192: </tr>
2193: <tr><td bgcolor="$tabbg" align="right">
1.146 www 2194: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
1.54 www 2195: </td></tr>
1.55 www 2196: <tr>
1.148 www 2197: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
1.54 www 2198: </table><br>
2199: ENDBODY
2200: }
1.99 www 2201:
2202: ###############################################
2203:
2204: sub get_posted_cgi {
2205: my $r=shift;
2206:
2207: my $buffer;
2208:
2209: $r->read($buffer,$r->header_in('Content-length'),0);
2210: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2211: my @pairs=split(/&/,$buffer);
2212: my $pair;
2213: foreach $pair (@pairs) {
2214: my ($name,$value) = split(/=/,$pair);
2215: $value =~ tr/+/ /;
2216: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2217: $name =~ tr/+/ /;
2218: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2219: &add_to_env("form.$name",$value);
2220: }
2221: } else {
2222: my $contentsep=$1;
2223: my @lines = split (/\n/,$buffer);
2224: my $name='';
2225: my $value='';
2226: my $fname='';
2227: my $fmime='';
2228: my $i;
2229: for ($i=0;$i<=$#lines;$i++) {
2230: if ($lines[$i]=~/^$contentsep/) {
2231: if ($name) {
2232: chomp($value);
2233: if ($fname) {
2234: $ENV{"form.$name.filename"}=$fname;
2235: $ENV{"form.$name.mimetype"}=$fmime;
2236: } else {
2237: $value=~s/\s+$//s;
2238: }
2239: &add_to_env("form.$name",$value);
2240: }
2241: if ($i<$#lines) {
2242: $i++;
2243: $lines[$i]=~
2244: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2245: $name=$1;
2246: $value='';
2247: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2248: $fname=$1;
2249: if
2250: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2251: $fmime=$1;
2252: $i++;
2253: } else {
2254: $fmime='';
2255: }
2256: } else {
2257: $fname='';
2258: $fmime='';
2259: }
2260: $i++;
2261: }
2262: } else {
2263: $value.=$lines[$i]."\n";
2264: }
2265: }
2266: }
2267: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2268: $r->method_number(M_GET);
2269: $r->method('GET');
2270: $r->headers_in->unset('Content-length');
2271: }
2272:
1.112 bowersj2 2273: =pod
2274:
2275: =item * get_unprocessed_cgi($query,$possible_names)
2276:
2277: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2278: $query. The parameters listed in $possible_names (an array reference),
2279: will be set in $ENV{'form.name'} if they do not already exist.
2280:
2281: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2282: $possible_names is an ref to an array of form element names. As an example:
2283: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2284: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2285:
2286: =cut
1.1 albertel 2287:
1.6 albertel 2288: sub get_unprocessed_cgi {
1.25 albertel 2289: my ($query,$possible_names)= @_;
1.26 matthew 2290: # $Apache::lonxml::debug=1;
1.16 harris41 2291: foreach (split(/&/,$query)) {
1.6 albertel 2292: my ($name, $value) = split(/=/,$_);
1.25 albertel 2293: $name = &Apache::lonnet::unescape($name);
2294: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2295: $value =~ tr/+/ /;
2296: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2297: &Apache::lonxml::debug("Seting :$name: to :$value:");
1.30 albertel 2298: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
1.25 albertel 2299: }
1.16 harris41 2300: }
1.6 albertel 2301: }
2302:
1.112 bowersj2 2303: =pod
2304:
2305: =item * cacheheader()
2306:
2307: returns cache-controlling header code
2308:
2309: =cut
2310:
1.7 albertel 2311: sub cacheheader {
1.23 www 2312: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.8 albertel 2313: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.7 albertel 2314: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2315: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2316: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2317: return $output;
2318: }
2319:
1.112 bowersj2 2320: =pod
2321:
2322: =item * no_cache($r)
2323:
2324: specifies header code to not have cache
2325:
2326: =cut
2327:
1.9 albertel 2328: sub no_cache {
2329: my ($r) = @_;
1.23 www 2330: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.24 albertel 2331: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.9 albertel 2332: $r->no_cache(1);
2333: $r->header_out("Pragma" => "no-cache");
1.24 albertel 2334: #$r->header_out("Expires" => $date);
1.123 www 2335: }
2336:
2337: sub content_type {
2338: my ($r,$type,$charset) = @_;
2339: unless ($charset) {
2340: $charset=&Apache::lonlocal::current_encoding;
2341: }
2342: $r->content_type($type.($charset?'; charset='.$charset:''));
1.9 albertel 2343: }
1.25 albertel 2344:
1.112 bowersj2 2345: =pod
2346:
2347: =item * add_to_env($name,$value)
2348:
2349: adds $name to the %ENV hash with value
2350: $value, if $name already exists, the entry is converted to an array
2351: reference and $value is added to the array.
2352:
2353: =cut
2354:
1.25 albertel 2355: sub add_to_env {
2356: my ($name,$value)=@_;
1.28 albertel 2357: if (defined($ENV{$name})) {
1.27 albertel 2358: if (ref($ENV{$name})) {
1.25 albertel 2359: #already have multiple values
2360: push(@{ $ENV{$name} },$value);
2361: } else {
2362: #first time seeing multiple values, convert hash entry to an arrayref
2363: my $first=$ENV{$name};
2364: undef($ENV{$name});
2365: push(@{ $ENV{$name} },$first,$value);
2366: }
2367: } else {
2368: $ENV{$name}=$value;
2369: }
1.31 albertel 2370: }
1.149 albertel 2371:
2372: =pod
2373:
2374: =item * get_env_multiple($name)
2375:
2376: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
2377: values may be defined and end up as an array ref.
2378:
2379: returns an array of values
2380:
2381: =cut
2382:
2383: sub get_env_multiple {
2384: my ($name) = @_;
2385: my @values;
2386: if (defined($ENV{$name})) {
2387: # exists is it an array
2388: if (ref($ENV{$name})) {
2389: @values=@{ $ENV{$name} };
2390: } else {
2391: $values[0]=$ENV{$name};
2392: }
2393: }
2394: return(@values);
2395: }
2396:
1.31 albertel 2397:
1.41 ng 2398: =pod
1.45 matthew 2399:
2400: =back
1.41 ng 2401:
1.112 bowersj2 2402: =head1 CSV Upload/Handling functions
1.38 albertel 2403:
1.41 ng 2404: =over 4
2405:
1.112 bowersj2 2406: =item * upfile_store($r)
1.41 ng 2407:
2408: Store uploaded file, $r should be the HTTP Request object,
2409: needs $ENV{'form.upfile'}
2410: returns $datatoken to be put into hidden field
2411:
2412: =cut
1.31 albertel 2413:
2414: sub upfile_store {
2415: my $r=shift;
2416: $ENV{'form.upfile'}=~s/\r/\n/gs;
2417: $ENV{'form.upfile'}=~s/\f/\n/gs;
2418: $ENV{'form.upfile'}=~s/\n+/\n/gs;
2419: $ENV{'form.upfile'}=~s/\n+$//gs;
2420:
2421: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
2422: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
2423: {
1.158 raeburn 2424: my $datafile = $r->dir_config('lonDaemons').
2425: '/tmp/'.$datatoken.'.tmp';
2426: if ( open(my $fh,">$datafile") ) {
2427: print $fh $ENV{'form.upfile'};
2428: close($fh);
2429: }
1.31 albertel 2430: }
2431: return $datatoken;
2432: }
2433:
1.56 matthew 2434: =pod
2435:
1.112 bowersj2 2436: =item * load_tmp_file($r)
1.41 ng 2437:
2438: Load uploaded file from tmp, $r should be the HTTP Request object,
2439: needs $ENV{'form.datatoken'},
2440: sets $ENV{'form.upfile'} to the contents of the file
2441:
2442: =cut
1.31 albertel 2443:
2444: sub load_tmp_file {
2445: my $r=shift;
2446: my @studentdata=();
2447: {
1.158 raeburn 2448: my $studentfile = $r->dir_config('lonDaemons').
2449: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
2450: if ( open(my $fh,"<$studentfile") ) {
2451: @studentdata=<$fh>;
2452: close($fh);
2453: }
1.31 albertel 2454: }
2455: $ENV{'form.upfile'}=join('',@studentdata);
2456: }
2457:
1.56 matthew 2458: =pod
2459:
1.112 bowersj2 2460: =item * upfile_record_sep()
1.41 ng 2461:
2462: Separate uploaded file into records
2463: returns array of records,
2464: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
2465:
2466: =cut
1.31 albertel 2467:
2468: sub upfile_record_sep {
2469: if ($ENV{'form.upfiletype'} eq 'xml') {
2470: } else {
2471: return split(/\n/,$ENV{'form.upfile'});
2472: }
2473: }
2474:
1.56 matthew 2475: =pod
2476:
1.112 bowersj2 2477: =item * record_sep($record)
1.41 ng 2478:
2479: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
2480:
2481: =cut
2482:
1.31 albertel 2483: sub record_sep {
2484: my $record=shift;
2485: my %components=();
2486: if ($ENV{'form.upfiletype'} eq 'xml') {
2487: } elsif ($ENV{'form.upfiletype'} eq 'space') {
2488: my $i=0;
2489: foreach (split(/\s+/,$record)) {
2490: my $field=$_;
2491: $field=~s/^(\"|\')//;
2492: $field=~s/(\"|\')$//;
2493: $components{$i}=$field;
2494: $i++;
2495: }
2496: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2497: my $i=0;
2498: foreach (split(/\t+/,$record)) {
2499: my $field=$_;
2500: $field=~s/^(\"|\')//;
2501: $field=~s/(\"|\')$//;
2502: $components{$i}=$field;
2503: $i++;
2504: }
2505: } else {
2506: my @allfields=split(/\,/,$record);
2507: my $i=0;
2508: my $j;
2509: for ($j=0;$j<=$#allfields;$j++) {
2510: my $field=$allfields[$j];
2511: if ($field=~/^\s*(\"|\')/) {
2512: my $delimiter=$1;
2513: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2514: $j++;
2515: $field.=','.$allfields[$j];
2516: }
2517: $field=~s/^\s*$delimiter//;
2518: $field=~s/$delimiter\s*$//;
2519: }
2520: $components{$i}=$field;
2521: $i++;
2522: }
2523: }
2524: return %components;
2525: }
2526:
1.144 matthew 2527: ######################################################
2528: ######################################################
2529:
1.56 matthew 2530: =pod
2531:
1.112 bowersj2 2532: =item * upfile_select_html()
1.41 ng 2533:
1.144 matthew 2534: Return HTML code to select a file from the users machine and specify
2535: the file type.
1.41 ng 2536:
2537: =cut
2538:
1.144 matthew 2539: ######################################################
2540: ######################################################
1.31 albertel 2541: sub upfile_select_html {
1.144 matthew 2542: my %Types = (
2543: csv => &mt('CSV (comma separated values, spreadsheet)'),
2544: space => &mt('Space separated'),
2545: tab => &mt('Tabulator separated'),
2546: # xml => &mt('HTML/XML'),
2547: );
2548: my $Str = '<input type="file" name="upfile" size="50" />'.
2549: '<br />Type: <select name="upfiletype">';
2550: foreach my $type (sort(keys(%Types))) {
2551: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
2552: }
2553: $Str .= "</select>\n";
2554: return $Str;
1.31 albertel 2555: }
2556:
1.144 matthew 2557: ######################################################
2558: ######################################################
2559:
1.56 matthew 2560: =pod
2561:
1.112 bowersj2 2562: =item * csv_print_samples($r,$records)
1.41 ng 2563:
2564: Prints a table of sample values from each column uploaded $r is an
2565: Apache Request ref, $records is an arrayref from
2566: &Apache::loncommon::upfile_record_sep
2567:
2568: =cut
2569:
1.144 matthew 2570: ######################################################
2571: ######################################################
1.31 albertel 2572: sub csv_print_samples {
2573: my ($r,$records) = @_;
2574: my (%sone,%stwo,%sthree);
2575: %sone=&record_sep($$records[0]);
2576: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2577: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
1.144 matthew 2578: #
2579: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
2580: foreach (sort({$a <=> $b} keys(%sone))) {
2581: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
1.31 albertel 2582: $r->print('</tr>');
2583: foreach my $hash (\%sone,\%stwo,\%sthree) {
2584: $r->print('<tr>');
2585: foreach (sort({$a <=> $b} keys(%sone))) {
2586: $r->print('<td>');
2587: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
2588: $r->print('</td>');
2589: }
2590: $r->print('</tr>');
2591: }
2592: $r->print('</tr></table><br />'."\n");
2593: }
2594:
1.144 matthew 2595: ######################################################
2596: ######################################################
2597:
1.56 matthew 2598: =pod
2599:
1.112 bowersj2 2600: =item * csv_print_select_table($r,$records,$d)
1.41 ng 2601:
2602: Prints a table to create associations between values and table columns.
1.144 matthew 2603:
1.41 ng 2604: $r is an Apache Request ref,
2605: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2606: $d is an array of 2 element arrays (internal name, displayed name)
2607:
2608: =cut
2609:
1.144 matthew 2610: ######################################################
2611: ######################################################
1.31 albertel 2612: sub csv_print_select_table {
2613: my ($r,$records,$d) = @_;
2614: my $i=0;my %sone;
2615: %sone=&record_sep($$records[0]);
1.144 matthew 2616: $r->print(&mt('Associate columns with student attributes.')."\n".
2617: '<table border="2"><tr>'.
2618: '<th>'.&mt('Attribute').'</th>'.
2619: '<th>'.&mt('Column').'</th></tr>'."\n");
1.31 albertel 2620: foreach (@$d) {
2621: my ($value,$display)=@{ $_ };
2622: $r->print('<tr><td>'.$display.'</td>');
2623:
2624: $r->print('<td><select name=f'.$i.
1.32 matthew 2625: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 2626: $r->print('<option value="none"></option>');
2627: foreach (sort({$a <=> $b} keys(%sone))) {
2628: $r->print('<option value="'.$_.'">Column '.($_+1).'</option>');
2629: }
2630: $r->print('</select></td></tr>'."\n");
2631: $i++;
2632: }
2633: $i--;
2634: return $i;
2635: }
1.56 matthew 2636:
1.144 matthew 2637: ######################################################
2638: ######################################################
2639:
1.56 matthew 2640: =pod
1.31 albertel 2641:
1.112 bowersj2 2642: =item * csv_samples_select_table($r,$records,$d)
1.41 ng 2643:
2644: Prints a table of sample values from the upload and can make associate samples to internal names.
2645:
2646: $r is an Apache Request ref,
2647: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2648: $d is an array of 2 element arrays (internal name, displayed name)
2649:
2650: =cut
2651:
1.144 matthew 2652: ######################################################
2653: ######################################################
1.31 albertel 2654: sub csv_samples_select_table {
2655: my ($r,$records,$d) = @_;
2656: my %sone; my %stwo; my %sthree;
2657: my $i=0;
1.144 matthew 2658: #
2659: $r->print('<table border=2><tr><th>'.
2660: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
1.31 albertel 2661: %sone=&record_sep($$records[0]);
2662: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2663: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
1.144 matthew 2664: #
1.31 albertel 2665: foreach (sort keys %sone) {
1.144 matthew 2666: $r->print('<tr><td><select name="f'.$i.'"'.
1.32 matthew 2667: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 2668: foreach (@$d) {
2669: my ($value,$display)=@{ $_ };
1.144 matthew 2670: $r->print('<option value="'.$value.'">'.$display.'</option>');
1.31 albertel 2671: }
2672: $r->print('</select></td><td>');
2673: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
2674: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
2675: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
2676: $r->print('</td></tr>');
2677: $i++;
2678: }
2679: $i--;
2680: return($i);
1.115 matthew 2681: }
2682:
1.144 matthew 2683: ######################################################
2684: ######################################################
2685:
1.115 matthew 2686: =pod
2687:
2688: =item clean_excel_name($name)
2689:
2690: Returns a replacement for $name which does not contain any illegal characters.
2691:
2692: =cut
2693:
1.144 matthew 2694: ######################################################
2695: ######################################################
1.115 matthew 2696: sub clean_excel_name {
2697: my ($name) = @_;
2698: $name =~ s/[:\*\?\/\\]//g;
2699: if (length($name) > 31) {
2700: $name = substr($name,0,31);
2701: }
2702: return $name;
1.25 albertel 2703: }
1.84 albertel 2704:
1.85 albertel 2705: =pod
2706:
1.112 bowersj2 2707: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
1.85 albertel 2708:
2709: Returns either 1 or undef
2710:
2711: 1 if the part is to be hidden, undef if it is to be shown
2712:
2713: Arguments are:
2714:
2715: $id the id of the part to be checked
2716: $symb, optional the symb of the resource to check
2717: $udom, optional the domain of the user to check for
2718: $uname, optional the username of the user to check for
2719:
2720: =cut
1.84 albertel 2721:
2722: sub check_if_partid_hidden {
2723: my ($id,$symb,$udom,$uname) = @_;
1.133 albertel 2724: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
1.84 albertel 2725: $symb,$udom,$uname);
1.141 albertel 2726: my $truth=1;
2727: #if the string starts with !, then the list is the list to show not hide
2728: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
1.84 albertel 2729: my @hiddenlist=split(/,/,$hiddenparts);
2730: foreach my $checkid (@hiddenlist) {
1.141 albertel 2731: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
1.84 albertel 2732: }
1.141 albertel 2733: return !$truth;
1.84 albertel 2734: }
1.127 matthew 2735:
1.138 matthew 2736:
2737: ############################################################
2738: ############################################################
2739:
2740: =pod
2741:
1.157 matthew 2742: =back
2743:
1.138 matthew 2744: =head1 cgi-bin script and graphing routines
2745:
1.157 matthew 2746: =over 4
2747:
1.138 matthew 2748: =item get_cgi_id
2749:
2750: Inputs: none
2751:
2752: Returns an id which can be used to pass environment variables
2753: to various cgi-bin scripts. These environment variables will
2754: be removed from the users environment after a given time by
2755: the routine &Apache::lonnet::transfer_profile_to_env.
2756:
2757: =cut
2758:
2759: ############################################################
2760: ############################################################
1.152 albertel 2761: my $uniq=0;
1.136 matthew 2762: sub get_cgi_id {
1.154 albertel 2763: $uniq=($uniq+1)%100000;
1.152 albertel 2764: return (time.'_'.$uniq);
1.136 matthew 2765: }
2766:
1.127 matthew 2767: ############################################################
2768: ############################################################
2769:
2770: =pod
2771:
1.134 matthew 2772: =item DrawBarGraph
1.127 matthew 2773:
1.138 matthew 2774: Facilitates the plotting of data in a (stacked) bar graph.
2775: Puts plot definition data into the users environment in order for
2776: graph.png to plot it. Returns an <img> tag for the plot.
2777: The bars on the plot are labeled '1','2',...,'n'.
2778:
2779: Inputs:
2780:
2781: =over 4
2782:
2783: =item $Title: string, the title of the plot
2784:
2785: =item $xlabel: string, text describing the X-axis of the plot
2786:
2787: =item $ylabel: string, text describing the Y-axis of the plot
2788:
2789: =item $Max: scalar, the maximum Y value to use in the plot
2790: If $Max is < any data point, the graph will not be rendered.
2791:
1.140 matthew 2792: =item $colors: array ref holding the colors to be used for the data sets when
1.138 matthew 2793: they are plotted. If undefined, default values will be used.
2794:
2795: =item @Values: An array of array references. Each array reference holds data
2796: to be plotted in a stacked bar chart.
2797:
2798: =back
2799:
2800: Returns:
2801:
2802: An <img> tag which references graph.png and the appropriate identifying
2803: information for the plot.
2804:
1.127 matthew 2805: =cut
2806:
2807: ############################################################
2808: ############################################################
1.134 matthew 2809: sub DrawBarGraph {
1.129 matthew 2810: my ($Title,$xlabel,$ylabel,$Max,$colors,@Values)=@_;
1.134 matthew 2811: #
2812: if (! defined($colors)) {
2813: $colors = ['#33ff00',
2814: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
2815: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
2816: ];
2817: }
1.127 matthew 2818: #
1.136 matthew 2819: my $identifier = &get_cgi_id();
2820: my $id = 'cgi.'.$identifier;
1.129 matthew 2821: if (! @Values || ref($Values[0]) ne 'ARRAY') {
1.127 matthew 2822: return '';
2823: }
1.129 matthew 2824: my $NumBars = scalar(@{$Values[0]});
2825: my %ValuesHash;
2826: my $NumSets=1;
2827: foreach my $array (@Values) {
2828: next if (! ref($array));
1.136 matthew 2829: $ValuesHash{$id.'.data.'.$NumSets++} =
1.132 matthew 2830: join(',',@$array);
1.129 matthew 2831: }
1.127 matthew 2832: #
1.136 matthew 2833: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
2834: if ($NumBars < 10) {
2835: $width = 120+$NumBars*15;
2836: $xskip = 1;
2837: $bar_width = 15;
2838: } elsif ($NumBars <= 25) {
2839: $width = 120+$NumBars*11;
2840: $xskip = 5;
2841: $bar_width = 8;
2842: } elsif ($NumBars <= 50) {
2843: $width = 120+$NumBars*8;
2844: $xskip = 5;
2845: $bar_width = 4;
2846: } else {
2847: $width = 120+$NumBars*8;
2848: $xskip = 5;
2849: $bar_width = 4;
2850: }
2851: #
2852: my @Labels;
2853: for (my $i=0;$i<@{$Values[0]};$i++) {
2854: push (@Labels,$i+1);
2855: }
2856: #
1.137 matthew 2857: $Max = 1 if ($Max < 1);
2858: if ( int($Max) < $Max ) {
2859: $Max++;
2860: $Max = int($Max);
2861: }
1.127 matthew 2862: $Title = '' if (! defined($Title));
2863: $xlabel = '' if (! defined($xlabel));
2864: $ylabel = '' if (! defined($ylabel));
1.136 matthew 2865: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
2866: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
2867: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
1.137 matthew 2868: $ValuesHash{$id.'.y_max_value'} = $Max;
1.136 matthew 2869: $ValuesHash{$id.'.NumBars'} = $NumBars;
2870: $ValuesHash{$id.'.NumSets'} = $NumSets;
2871: $ValuesHash{$id.'.PlotType'} = 'bar';
2872: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
2873: $ValuesHash{$id.'.height'} = $height;
2874: $ValuesHash{$id.'.width'} = $width;
2875: $ValuesHash{$id.'.xskip'} = $xskip;
2876: $ValuesHash{$id.'.bar_width'} = $bar_width;
2877: $ValuesHash{$id.'.labels'} = join(',',@Labels);
1.127 matthew 2878: #
1.137 matthew 2879: &Apache::lonnet::appenv(%ValuesHash);
2880: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
2881: }
2882:
2883: ############################################################
2884: ############################################################
2885:
2886: =pod
2887:
2888: =item DrawXYGraph
2889:
1.138 matthew 2890: Facilitates the plotting of data in an XY graph.
2891: Puts plot definition data into the users environment in order for
2892: graph.png to plot it. Returns an <img> tag for the plot.
2893:
2894: Inputs:
2895:
2896: =over 4
2897:
2898: =item $Title: string, the title of the plot
2899:
2900: =item $xlabel: string, text describing the X-axis of the plot
2901:
2902: =item $ylabel: string, text describing the Y-axis of the plot
2903:
2904: =item $Max: scalar, the maximum Y value to use in the plot
2905: If $Max is < any data point, the graph will not be rendered.
2906:
2907: =item $colors: Array ref containing the hex color codes for the data to be
2908: plotted in. If undefined, default values will be used.
2909:
2910: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
2911:
2912: =item $Ydata: Array ref containing Array refs.
2913: Each of the contained arrays will be plotted as a seperate curve.
2914:
2915: =item %Values: hash indicating or overriding any default values which are
2916: passed to graph.png.
2917: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
2918:
2919: =back
2920:
2921: Returns:
2922:
2923: An <img> tag which references graph.png and the appropriate identifying
2924: information for the plot.
2925:
1.137 matthew 2926: =cut
2927:
2928: ############################################################
2929: ############################################################
2930: sub DrawXYGraph {
2931: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
2932: #
2933: # Create the identifier for the graph
2934: my $identifier = &get_cgi_id();
2935: my $id = 'cgi.'.$identifier;
2936: #
2937: $Title = '' if (! defined($Title));
2938: $xlabel = '' if (! defined($xlabel));
2939: $ylabel = '' if (! defined($ylabel));
2940: my %ValuesHash =
2941: (
2942: $id.'.title' => &Apache::lonnet::escape($Title),
2943: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
2944: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
2945: $id.'.y_max_value'=> $Max,
2946: $id.'.labels' => join(',',@$Xlabels),
2947: $id.'.PlotType' => 'XY',
2948: );
2949: #
2950: if (defined($colors) && ref($colors) eq 'ARRAY') {
2951: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
2952: }
2953: #
2954: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
2955: return '';
2956: }
2957: my $NumSets=1;
1.138 matthew 2958: foreach my $array (@{$Ydata}){
1.137 matthew 2959: next if (! ref($array));
2960: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
2961: }
1.138 matthew 2962: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
1.137 matthew 2963: #
2964: # Deal with other parameters
2965: while (my ($key,$value) = each(%Values)) {
2966: $ValuesHash{$id.'.'.$key} = $value;
1.127 matthew 2967: }
2968: #
1.136 matthew 2969: &Apache::lonnet::appenv(%ValuesHash);
2970: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
2971: }
2972:
2973: ############################################################
2974: ############################################################
2975:
2976: =pod
2977:
1.138 matthew 2978: =item DrawXYYGraph
2979:
2980: Facilitates the plotting of data in an XY graph with two Y axes.
2981: Puts plot definition data into the users environment in order for
2982: graph.png to plot it. Returns an <img> tag for the plot.
2983:
2984: Inputs:
2985:
2986: =over 4
2987:
2988: =item $Title: string, the title of the plot
2989:
2990: =item $xlabel: string, text describing the X-axis of the plot
2991:
2992: =item $ylabel: string, text describing the Y-axis of the plot
2993:
2994: =item $colors: Array ref containing the hex color codes for the data to be
2995: plotted in. If undefined, default values will be used.
2996:
2997: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
2998:
2999: =item $Ydata1: The first data set
3000:
3001: =item $Min1: The minimum value of the left Y-axis
3002:
3003: =item $Max1: The maximum value of the left Y-axis
3004:
3005: =item $Ydata2: The second data set
3006:
3007: =item $Min2: The minimum value of the right Y-axis
3008:
3009: =item $Max2: The maximum value of the left Y-axis
3010:
3011: =item %Values: hash indicating or overriding any default values which are
3012: passed to graph.png.
3013: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3014:
3015: =back
3016:
3017: Returns:
3018:
3019: An <img> tag which references graph.png and the appropriate identifying
3020: information for the plot.
1.136 matthew 3021:
3022: =cut
3023:
3024: ############################################################
3025: ############################################################
1.137 matthew 3026: sub DrawXYYGraph {
3027: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3028: $Ydata2,$Min2,$Max2,%Values)=@_;
1.136 matthew 3029: #
3030: # Create the identifier for the graph
3031: my $identifier = &get_cgi_id();
3032: my $id = 'cgi.'.$identifier;
3033: #
3034: $Title = '' if (! defined($Title));
3035: $xlabel = '' if (! defined($xlabel));
3036: $ylabel = '' if (! defined($ylabel));
3037: my %ValuesHash =
3038: (
3039: $id.'.title' => &Apache::lonnet::escape($Title),
3040: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3041: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3042: $id.'.labels' => join(',',@$Xlabels),
3043: $id.'.PlotType' => 'XY',
3044: $id.'.NumSets' => 2,
1.137 matthew 3045: $id.'.two_axes' => 1,
3046: $id.'.y1_max_value' => $Max1,
3047: $id.'.y1_min_value' => $Min1,
3048: $id.'.y2_max_value' => $Max2,
3049: $id.'.y2_min_value' => $Min2,
1.136 matthew 3050: );
3051: #
1.137 matthew 3052: if (defined($colors) && ref($colors) eq 'ARRAY') {
3053: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3054: }
3055: #
3056: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3057: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
1.136 matthew 3058: return '';
3059: }
3060: my $NumSets=1;
1.137 matthew 3061: foreach my $array ($Ydata1,$Ydata2){
1.136 matthew 3062: next if (! ref($array));
3063: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
1.137 matthew 3064: }
3065: #
3066: # Deal with other parameters
3067: while (my ($key,$value) = each(%Values)) {
3068: $ValuesHash{$id.'.'.$key} = $value;
1.136 matthew 3069: }
3070: #
3071: &Apache::lonnet::appenv(%ValuesHash);
1.130 albertel 3072: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
1.139 matthew 3073: }
3074:
3075: ############################################################
3076: ############################################################
3077:
3078: =pod
3079:
1.157 matthew 3080: =back
3081:
1.139 matthew 3082: =head1 Statistics helper routines?
3083:
3084: Bad place for them but what the hell.
3085:
1.157 matthew 3086: =over 4
3087:
1.139 matthew 3088: =item &chartlink
3089:
3090: Returns a link to the chart for a specific student.
3091:
3092: Inputs:
3093:
3094: =over 4
3095:
3096: =item $linktext: The text of the link
3097:
3098: =item $sname: The students username
3099:
3100: =item $sdomain: The students domain
3101:
3102: =back
3103:
1.157 matthew 3104: =back
3105:
1.139 matthew 3106: =cut
3107:
3108: ############################################################
3109: ############################################################
3110: sub chartlink {
3111: my ($linktext, $sname, $sdomain) = @_;
3112: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3113: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3114: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3115: '">'.$linktext.'</a>';
1.153 matthew 3116: }
3117:
3118: #######################################################
3119: #######################################################
3120:
3121: =pod
3122:
3123: =head1 Course Environment Routines
1.157 matthew 3124:
3125: =over 4
1.153 matthew 3126:
3127: =item &restore_course_settings
3128:
3129: =item &store_course_settings
3130:
3131: Restores/Store indicated form parameters from the course environment.
3132: Will not overwrite existing values of the form parameters.
3133:
3134: Inputs:
3135: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3136:
3137: a hash ref describing the data to be stored. For example:
3138:
3139: %Save_Parameters = ('Status' => 'scalar',
3140: 'chartoutputmode' => 'scalar',
3141: 'chartoutputdata' => 'scalar',
3142: 'Section' => 'array',
3143: 'StudentData' => 'array',
3144: 'Maps' => 'array');
3145:
3146: Returns: both routines return nothing
3147:
3148: =cut
3149:
3150: #######################################################
3151: #######################################################
3152: sub store_course_settings {
3153: # save to the environment
3154: # appenv the same items, just to be safe
3155: my $courseid = $ENV{'request.course.id'};
3156: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3157: my ($prefix,$Settings) = @_;
3158: my %SaveHash;
3159: my %AppHash;
3160: while (my ($setting,$type) = each(%$Settings)) {
3161: my $basename = 'env.internal.'.$prefix.'.'.$setting;
3162: my $envname = 'course.'.$courseid.'.'.$basename;
3163: if (exists($ENV{'form.'.$setting})) {
3164: # Save this value away
3165: if ($type eq 'scalar' &&
3166: (! exists($ENV{$envname}) ||
3167: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3168: $SaveHash{$basename} = $ENV{'form.'.$setting};
3169: $AppHash{$envname} = $ENV{'form.'.$setting};
3170: } elsif ($type eq 'array') {
3171: my $stored_form;
3172: if (ref($ENV{'form.'.$setting})) {
3173: $stored_form = join(',',
3174: map {
3175: &Apache::lonnet::escape($_);
3176: } sort(@{$ENV{'form.'.$setting}}));
3177: } else {
3178: $stored_form =
3179: &Apache::lonnet::escape($ENV{'form.'.$setting});
3180: }
3181: # Determine if the array contents are the same.
3182: if ($stored_form ne $ENV{$envname}) {
3183: $SaveHash{$basename} = $stored_form;
3184: $AppHash{$envname} = $stored_form;
3185: }
3186: }
3187: }
3188: }
3189: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3190: $coursedom,
3191: $ENV{'course.'.$courseid.'.num'});
3192: if ($put_result !~ /^(ok|delayed)/) {
3193: &Apache::lonnet::logthis('unable to save form parameters, '.
3194: 'got error:'.$put_result);
3195: }
3196: # Make sure these settings stick around in this session, too
3197: &Apache::lonnet::appenv(%AppHash);
3198: return;
3199: }
3200:
3201: sub restore_course_settings {
3202: my $courseid = $ENV{'request.course.id'};
3203: my ($prefix,$Settings) = @_;
3204: while (my ($setting,$type) = each(%$Settings)) {
3205: next if (exists($ENV{'form.'.$setting}));
3206: my $envname = 'course.'.$courseid.'.env.internal.'.$prefix.
3207: '.'.$setting;
3208: if (exists($ENV{$envname})) {
3209: if ($type eq 'scalar') {
3210: $ENV{'form.'.$setting} = $ENV{$envname};
3211: } elsif ($type eq 'array') {
3212: $ENV{'form.'.$setting} = [
3213: map {
3214: &Apache::lonnet::unescape($_);
3215: } split(',',$ENV{$envname})
3216: ];
3217: }
3218: }
3219: }
1.127 matthew 3220: }
3221:
3222: ############################################################
3223: ############################################################
1.154 albertel 3224:
3225: sub propath {
3226: my ($udom,$uname)=@_;
3227: $udom=~s/\W//g;
3228: $uname=~s/\W//g;
3229: my $subdir=$uname.'__';
3230: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3231: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3232: return $proname;
1.156 albertel 3233: }
3234:
3235: sub icon {
3236: my ($file)=@_;
3237: my @file_ext = split(/\./,$file);
3238: my $curfext = $file_ext[-1];
3239: my $iconname="unknown.gif";
3240: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3241: # The unless conditional that follows is a bit of overkill
3242: $iconname = $curfext.".gif" unless
3243: (!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn');
3244: return $Apache::lonnet::perlvar{'lonIconsURL'}."/$iconname";
1.154 albertel 3245: }
1.84 albertel 3246:
1.41 ng 3247: =pod
3248:
3249: =back
3250:
1.112 bowersj2 3251: =cut
1.41 ng 3252:
1.112 bowersj2 3253: 1;
3254: __END__;
1.41 ng 3255:
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