Annotation of loncom/interface/loncommon.pm, revision 1.345
1.10 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # a pile of common routines
1.10 albertel 3: #
1.345 ! albertel 4: # $Id: loncommon.pm,v 1.344 2006/04/20 02:24:08 albertel 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;
1.258 albertel 58: use Apache::lonnet;
1.46 matthew 59: use GDBM_File;
1.51 www 60: use POSIX qw(strftime mktime);
1.82 www 61: use Apache::lonmenu();
1.117 www 62: use Apache::lonlocal;
1.139 matthew 63: use HTML::Entities;
1.334 albertel 64: use Apache::lonhtmlcommon();
65: use Apache::loncoursedata();
1.344 albertel 66: use Apache::lontexconvert();
1.117 www 67:
1.22 www 68: my $readit;
69:
1.157 matthew 70: ##
71: ## Global Variables
72: ##
1.46 matthew 73:
1.20 www 74: # ----------------------------------------------- Filetypes/Languages/Copyright
1.12 harris41 75: my %language;
1.124 www 76: my %supported_language;
1.12 harris41 77: my %cprtag;
1.192 taceyjo1 78: my %scprtag;
1.12 harris41 79: my %fe; my %fd;
1.41 ng 80: my %category_extensions;
1.12 harris41 81:
1.63 www 82: # ---------------------------------------------- Designs
83:
84: my %designhash;
85:
1.46 matthew 86: # ---------------------------------------------- Thesaurus variables
1.144 matthew 87: #
88: # %Keywords:
89: # A hash used by &keyword to determine if a word is considered a keyword.
90: # $thesaurus_db_file
91: # Scalar containing the full path to the thesaurus database.
1.46 matthew 92:
93: my %Keywords;
94: my $thesaurus_db_file;
95:
1.144 matthew 96: #
97: # Initialize values from language.tab, copyright.tab, filetypes.tab,
98: # thesaurus.tab, and filecategories.tab.
99: #
1.18 www 100: BEGIN {
1.46 matthew 101: # Variable initialization
102: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
103: #
1.22 www 104: unless ($readit) {
1.12 harris41 105: # ------------------------------------------------------------------- languages
106: {
1.158 raeburn 107: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
108: '/language.tab';
109: if ( open(my $fh,"<$langtabfile") ) {
110: while (<$fh>) {
111: next if /^\#/;
112: chomp;
113: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
114: $language{$key}=$val.' - '.$enc;
115: if ($sup) {
116: $supported_language{$key}=$sup;
117: }
118: }
119: close($fh);
120: }
1.12 harris41 121: }
122: # ------------------------------------------------------------------ copyrights
123: {
1.158 raeburn 124: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
125: '/copyright.tab';
126: if ( open (my $fh,"<$copyrightfile") ) {
127: while (<$fh>) {
128: next if /^\#/;
129: chomp;
130: my ($key,$val)=(split(/\s+/,$_,2));
131: $cprtag{$key}=$val;
132: }
133: close($fh);
134: }
1.12 harris41 135: }
1.192 taceyjo1 136: # ------------------------------------------------------------------ source copyrights
137: {
138: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
139: '/source_copyright.tab';
140: if ( open (my $fh,"<$sourcecopyrightfile") ) {
141: while (<$fh>) {
142: next if /^\#/;
143: chomp;
144: my ($key,$val)=(split(/\s+/,$_,2));
145: $scprtag{$key}=$val;
146: }
147: close($fh);
148: }
149: }
1.63 www 150:
151: # -------------------------------------------------------------- domain designs
152:
153: my $filename;
154: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
155: opendir(DIR,$designdir);
156: while ($filename=readdir(DIR)) {
1.271 albertel 157: if ($filename!~/\.tab$/) { next; }
1.63 www 158: my ($domain)=($filename=~/^(\w+)\./);
1.271 albertel 159: {
160: my $designfile = $designdir.'/'.$filename;
161: if ( open (my $fh,"<$designfile") ) {
162: while (<$fh>) {
163: next if /^\#/;
164: chomp;
165: my ($key,$val)=(split(/\=/,$_));
166: if ($val) { $designhash{$domain.'.'.$key}=$val; }
167: }
168: close($fh);
169: }
170: }
1.63 www 171:
172: }
173: closedir(DIR);
174:
175:
1.15 harris41 176: # ------------------------------------------------------------- file categories
177: {
1.158 raeburn 178: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
179: '/filecategories.tab';
180: if ( open (my $fh,"<$categoryfile") ) {
181: while (<$fh>) {
182: next if /^\#/;
183: chomp;
184: my ($extension,$category)=(split(/\s+/,$_,2));
185: push @{$category_extensions{lc($category)}},$extension;
186: }
187: close($fh);
188: }
189:
1.15 harris41 190: }
1.12 harris41 191: # ------------------------------------------------------------------ file types
192: {
1.158 raeburn 193: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
194: '/filetypes.tab';
195: if ( open (my $fh,"<$typesfile") ) {
1.16 harris41 196: while (<$fh>) {
1.158 raeburn 197: next if (/^\#/);
198: chomp;
199: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
200: if ($descr ne '') {
201: $fe{$ending}=lc($emb);
202: $fd{$ending}=$descr;
203: }
204: }
205: close($fh);
206: }
1.12 harris41 207: }
1.22 www 208: &Apache::lonnet::logthis(
1.46 matthew 209: "<font color=yellow>INFO: Read file types</font>");
1.22 www 210: $readit=1;
1.46 matthew 211: } # end of unless($readit)
1.32 matthew 212:
213: }
1.112 bowersj2 214:
1.42 matthew 215: ###############################################################
216: ## HTML and Javascript Helper Functions ##
217: ###############################################################
218:
219: =pod
220:
1.112 bowersj2 221: =head1 HTML and Javascript Functions
1.42 matthew 222:
1.112 bowersj2 223: =over 4
224:
225: =item * browser_and_searcher_javascript ()
226:
227: X<browsing, javascript>X<searching, javascript>Returns a string
228: containing javascript with two functions, C<openbrowser> and
229: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
230: tags.
1.42 matthew 231:
1.112 bowersj2 232: =item * openbrowser(formname,elementname,only,omit) [javascript]
1.42 matthew 233:
234: inputs: formname, elementname, only, omit
235:
236: formname and elementname indicate the name of the html form and name of
237: the element that the results of the browsing selection are to be placed in.
238:
239: Specifying 'only' will restrict the browser to displaying only files
1.185 www 240: with the given extension. Can be a comma separated list.
1.42 matthew 241:
242: Specifying 'omit' will restrict the browser to NOT displaying files
1.185 www 243: with the given extension. Can be a comma separated list.
1.42 matthew 244:
1.112 bowersj2 245: =item * opensearcher(formname, elementname) [javascript]
1.42 matthew 246:
247: Inputs: formname, elementname
248:
249: formname and elementname specify the name of the html form and the name
250: of the element the selection from the search results will be placed in.
251:
252: =cut
253:
254: sub browser_and_searcher_javascript {
1.199 albertel 255: my ($mode)=@_;
256: if (!defined($mode)) { $mode='edit'; }
1.170 www 257: my $resurl=&lastresurl();
1.42 matthew 258: return <<END;
1.219 albertel 259: // <!-- BEGIN LON-CAPA Internal
1.50 matthew 260: var editbrowser = null;
1.135 albertel 261: function openbrowser(formname,elementname,only,omit,titleelement) {
1.170 www 262: var url = '$resurl/?';
1.42 matthew 263: if (editbrowser == null) {
264: url += 'launch=1&';
265: }
266: url += 'catalogmode=interactive&';
1.199 albertel 267: url += 'mode=$mode&';
1.42 matthew 268: url += 'form=' + formname + '&';
269: if (only != null) {
270: url += 'only=' + only + '&';
1.217 albertel 271: } else {
272: url += 'only=&';
273: }
1.42 matthew 274: if (omit != null) {
275: url += 'omit=' + omit + '&';
1.217 albertel 276: } else {
277: url += 'omit=&';
278: }
1.135 albertel 279: if (titleelement != null) {
280: url += 'titleelement=' + titleelement + '&';
1.217 albertel 281: } else {
282: url += 'titleelement=&';
283: }
1.42 matthew 284: url += 'element=' + elementname + '';
285: var title = 'Browser';
1.217 albertel 286: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
1.42 matthew 287: options += ',width=700,height=600';
288: editbrowser = open(url,title,options,'1');
289: editbrowser.focus();
290: }
291: var editsearcher;
1.135 albertel 292: function opensearcher(formname,elementname,titleelement) {
1.42 matthew 293: var url = '/adm/searchcat?';
294: if (editsearcher == null) {
295: url += 'launch=1&';
296: }
297: url += 'catalogmode=interactive&';
1.199 albertel 298: url += 'mode=$mode&';
1.42 matthew 299: url += 'form=' + formname + '&';
1.135 albertel 300: if (titleelement != null) {
301: url += 'titleelement=' + titleelement + '&';
1.217 albertel 302: } else {
303: url += 'titleelement=&';
304: }
1.42 matthew 305: url += 'element=' + elementname + '';
306: var title = 'Search';
307: var options = 'scrollbars=1,resizable=1,menubar=0';
308: options += ',width=700,height=600';
309: editsearcher = open(url,title,options,'1');
310: editsearcher.focus();
311: }
1.219 albertel 312: // END LON-CAPA Internal -->
1.42 matthew 313: END
1.170 www 314: }
315:
316: sub lastresurl {
1.258 albertel 317: if ($env{'environment.lastresurl'}) {
318: return $env{'environment.lastresurl'}
1.170 www 319: } else {
320: return '/res';
321: }
322: }
323:
324: sub storeresurl {
325: my $resurl=&Apache::lonnet::clutter(shift);
326: unless ($resurl=~/^\/res/) { return 0; }
327: $resurl=~s/\/$//;
328: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
329: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
330: return 1;
1.42 matthew 331: }
332:
1.74 www 333: sub studentbrowser_javascript {
1.111 www 334: unless (
1.258 albertel 335: (($env{'request.course.id'}) &&
1.302 albertel 336: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
337: || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
338: '/'.$env{'request.course.sec'})
339: ))
1.258 albertel 340: || ($env{'request.role'}=~/^(au|dc|su)/)
1.111 www 341: ) { return ''; }
1.74 www 342: return (<<'ENDSTDBRW');
343: <script type="text/javascript" language="Javascript" >
344: var stdeditbrowser;
1.111 www 345: function openstdbrowser(formname,uname,udom,roleflag) {
1.74 www 346: var url = '/adm/pickstudent?';
347: var filter;
348: eval('filter=document.'+formname+'.'+uname+'.value;');
349: if (filter != null) {
350: if (filter != '') {
351: url += 'filter='+filter+'&';
352: }
353: }
354: url += 'form=' + formname + '&unameelement='+uname+
355: '&udomelement='+udom;
1.111 www 356: if (roleflag) { url+="&roles=1"; }
1.102 www 357: var title = 'Student_Browser';
1.74 www 358: var options = 'scrollbars=1,resizable=1,menubar=0';
359: options += ',width=700,height=600';
360: stdeditbrowser = open(url,title,options,'1');
361: stdeditbrowser.focus();
362: }
363: </script>
364: ENDSTDBRW
365: }
1.42 matthew 366:
1.74 www 367: sub selectstudent_link {
1.111 www 368: my ($form,$unameele,$udomele)=@_;
1.258 albertel 369: if ($env{'request.course.id'}) {
1.302 albertel 370: if (!&Apache::lonnet::allowed('srm',$env{'request.course.id'})
371: && !&Apache::lonnet::allowed('srm',$env{'request.course.id'}.
372: '/'.$env{'request.course.sec'})) {
1.111 www 373: return '';
374: }
375: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
1.119 www 376: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
1.74 www 377: }
1.258 albertel 378: if ($env{'request.role'}=~/^(au|dc|su)/) {
1.111 www 379: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
1.119 www 380: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
1.111 www 381: }
382: return '';
1.91 www 383: }
384:
385: sub coursebrowser_javascript {
1.234 raeburn 386: my ($domainfilter)=@_;
1.128 albertel 387: return (<<ENDSTDBRW);
1.91 www 388: <script type="text/javascript" language="Javascript" >
389: var stdeditbrowser;
1.293 raeburn 390: function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag) {
1.91 www 391: var url = '/adm/pickcourse?';
392: var filter;
393: if (filter != null) {
394: if (filter != '') {
395: url += 'filter='+filter+'&';
396: }
397: }
1.128 albertel 398: var domainfilter='$domainfilter';
399: if (domainfilter != null) {
400: if (domainfilter != '') {
401: url += 'domainfilter='+domainfilter+'&';
402: }
403: }
1.91 www 404: url += 'form=' + formname + '&cnumelement='+uname+
1.187 albertel 405: '&cdomelement='+udom+
406: '&cnameelement='+desc;
1.234 raeburn 407: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
408: url += '&roleelement='+extra_element;
409: if (domainfilter == null || domainfilter == '') {
410: url += '&domainfilter='+extra_element;
411: }
1.230 raeburn 412: }
1.293 raeburn 413: if (multflag !=null && multflag != '') {
414: url += '&multiple='+multflag;
415: }
1.102 www 416: var title = 'Course_Browser';
1.91 www 417: var options = 'scrollbars=1,resizable=1,menubar=0';
418: options += ',width=700,height=600';
419: stdeditbrowser = open(url,title,options,'1');
420: stdeditbrowser.focus();
421: }
422: </script>
423: ENDSTDBRW
424: }
425:
426: sub selectcourse_link {
1.293 raeburn 427: my ($form,$unameele,$udomele,$desc,$extra_element,$multflag)=@_;
1.91 www 428: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
1.293 raeburn 429: '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'");'."'>".&mt('Select Course')."</a>";
1.74 www 430: }
1.42 matthew 431:
1.273 raeburn 432: sub check_uncheck_jscript {
433: my $jscript = <<"ENDSCRT";
434: function checkAll(field) {
435: if (field.length > 0) {
436: for (i = 0; i < field.length; i++) {
437: field[i].checked = true ;
438: }
439: } else {
440: field.checked = true
441: }
442: }
443:
444: function uncheckAll(field) {
445: if (field.length > 0) {
446: for (i = 0; i < field.length; i++) {
447: field[i].checked = false ;
448: } } else {
449: field.checked = false ;
450: }
451: }
452: ENDSCRT
453: return $jscript;
454: }
455:
456:
1.42 matthew 457: =pod
1.36 matthew 458:
1.112 bowersj2 459: =item * linked_select_forms(...)
1.36 matthew 460:
461: linked_select_forms returns a string containing a <script></script> block
462: and html for two <select> menus. The select menus will be linked in that
463: changing the value of the first menu will result in new values being placed
464: in the second menu. The values in the select menu will appear in alphabetical
465: order.
466:
467: linked_select_forms takes the following ordered inputs:
468:
469: =over 4
470:
1.112 bowersj2 471: =item * $formname, the name of the <form> tag
1.36 matthew 472:
1.112 bowersj2 473: =item * $middletext, the text which appears between the <select> tags
1.36 matthew 474:
1.112 bowersj2 475: =item * $firstdefault, the default value for the first menu
1.36 matthew 476:
1.112 bowersj2 477: =item * $firstselectname, the name of the first <select> tag
1.36 matthew 478:
1.112 bowersj2 479: =item * $secondselectname, the name of the second <select> tag
1.36 matthew 480:
1.112 bowersj2 481: =item * $hashref, a reference to a hash containing the data for the menus.
1.36 matthew 482:
1.41 ng 483: =back
484:
1.36 matthew 485: Below is an example of such a hash. Only the 'text', 'default', and
486: 'select2' keys must appear as stated. keys(%menu) are the possible
487: values for the first select menu. The text that coincides with the
1.41 ng 488: first menu value is given in $menu{$choice1}->{'text'}. The values
1.36 matthew 489: and text for the second menu are given in the hash pointed to by
490: $menu{$choice1}->{'select2'}.
491:
1.112 bowersj2 492: my %menu = ( A1 => { text =>"Choice A1" ,
493: default => "B3",
494: select2 => {
495: B1 => "Choice B1",
496: B2 => "Choice B2",
497: B3 => "Choice B3",
498: B4 => "Choice B4"
499: }
500: },
501: A2 => { text =>"Choice A2" ,
502: default => "C2",
503: select2 => {
504: C1 => "Choice C1",
505: C2 => "Choice C2",
506: C3 => "Choice C3"
507: }
508: },
509: A3 => { text =>"Choice A3" ,
510: default => "D6",
511: select2 => {
512: D1 => "Choice D1",
513: D2 => "Choice D2",
514: D3 => "Choice D3",
515: D4 => "Choice D4",
516: D5 => "Choice D5",
517: D6 => "Choice D6",
518: D7 => "Choice D7"
519: }
520: }
521: );
1.36 matthew 522:
523: =cut
524:
525: sub linked_select_forms {
526: my ($formname,
527: $middletext,
528: $firstdefault,
529: $firstselectname,
530: $secondselectname,
531: $hashref
532: ) = @_;
533: my $second = "document.$formname.$secondselectname";
534: my $first = "document.$formname.$firstselectname";
535: # output the javascript to do the changing
536: my $result = '';
1.219 albertel 537: $result.="<script type=\"text/javascript\">\n";
1.36 matthew 538: $result.="var select2data = new Object();\n";
539: $" = '","';
540: my $debug = '';
541: foreach my $s1 (sort(keys(%$hashref))) {
542: $result.="select2data.d_$s1 = new Object();\n";
543: $result.="select2data.d_$s1.def = new String('".
544: $hashref->{$s1}->{'default'}."');\n";
545: $result.="select2data.d_$s1.values = new Array(";
546: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
547: $result.="\"@s2values\");\n";
548: $result.="select2data.d_$s1.texts = new Array(";
549: my @s2texts;
550: foreach my $value (@s2values) {
551: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
552: }
553: $result.="\"@s2texts\");\n";
554: }
555: $"=' ';
556: $result.= <<"END";
557:
558: function select1_changed() {
559: // Determine new choice
560: var newvalue = "d_" + $first.value;
561: // update select2
562: var values = select2data[newvalue].values;
563: var texts = select2data[newvalue].texts;
564: var select2def = select2data[newvalue].def;
565: var i;
566: // out with the old
567: for (i = 0; i < $second.options.length; i++) {
568: $second.options[i] = null;
569: }
570: // in with the nuclear
571: for (i=0;i<values.length; i++) {
572: $second.options[i] = new Option(values[i]);
1.143 matthew 573: $second.options[i].value = values[i];
1.36 matthew 574: $second.options[i].text = texts[i];
575: if (values[i] == select2def) {
576: $second.options[i].selected = true;
577: }
578: }
579: }
580: </script>
581: END
582: # output the initial values for the selection lists
583: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
584: foreach my $value (sort(keys(%$hashref))) {
585: $result.=" <option value=\"$value\" ";
1.253 albertel 586: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
1.119 www 587: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
1.36 matthew 588: }
589: $result .= "</select>\n";
590: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
591: $result .= $middletext;
592: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
593: my $seconddefault = $hashref->{$firstdefault}->{'default'};
594: foreach my $value (sort(keys(%select2))) {
595: $result.=" <option value=\"$value\" ";
1.253 albertel 596: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
1.119 www 597: $result.=">".&mt($select2{$value})."</option>\n";
1.36 matthew 598: }
599: $result .= "</select>\n";
600: # return $debug;
601: return $result;
602: } # end of sub linked_select_forms {
603:
1.45 matthew 604: =pod
1.44 bowersj2 605:
1.112 bowersj2 606: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
1.44 bowersj2 607:
1.112 bowersj2 608: Returns a string corresponding to an HTML link to the given help
609: $topic, where $topic corresponds to the name of a .tex file in
610: /home/httpd/html/adm/help/tex, with underscores replaced by
611: spaces.
612:
613: $text will optionally be linked to the same topic, allowing you to
614: link text in addition to the graphic. If you do not want to link
615: text, but wish to specify one of the later parameters, pass an
616: empty string.
617:
618: $stayOnPage is a value that will be interpreted as a boolean. If true,
619: the link will not open a new window. If false, the link will open
620: a new window using Javascript. (Default is false.)
621:
622: $width and $height are optional numerical parameters that will
623: override the width and height of the popped up window, which may
624: be useful for certain help topics with big pictures included.
1.44 bowersj2 625:
626: =cut
627:
628: sub help_open_topic {
1.48 bowersj2 629: my ($topic, $text, $stayOnPage, $width, $height) = @_;
630: $text = "" if (not defined $text);
1.44 bowersj2 631: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 632: if ($env{'browser.interface'} eq 'textual' ||
633: $env{'environment.remote'} eq 'off' ) {
1.79 www 634: $stayOnPage=1;
635: }
1.44 bowersj2 636: $width = 350 if (not defined $width);
637: $height = 400 if (not defined $height);
638: my $filename = $topic;
639: $filename =~ s/ /_/g;
640:
1.48 bowersj2 641: my $template = "";
642: my $link;
1.159 www 643:
644: $topic=~s/\W/\_/g;
1.44 bowersj2 645:
646: if (!$stayOnPage)
647: {
1.72 bowersj2 648: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
1.44 bowersj2 649: }
650: else
651: {
1.48 bowersj2 652: $link = "/adm/help/${filename}.hlp";
653: }
654:
655: # Add the text
656: if ($text ne "")
657: {
1.77 www 658: $template .=
659: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
1.78 www 660: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.48 bowersj2 661: }
662:
663: # Add the graphic
1.179 matthew 664: my $title = &mt('Online Help');
1.215 albertel 665: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
1.48 bowersj2 666: $template .= <<"ENDTEMPLATE";
1.218 albertel 667: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
1.44 bowersj2 668: ENDTEMPLATE
1.78 www 669: if ($text ne '') { $template.='</td></tr></table>' };
1.44 bowersj2 670: return $template;
671:
1.106 bowersj2 672: }
673:
674: # This is a quicky function for Latex cheatsheet editing, since it
675: # appears in at least four places
676: sub helpLatexCheatsheet {
677: my $other = shift;
678: my $addOther = '';
679: if ($other) {
680: $addOther = Apache::loncommon::help_open_topic($other, shift,
681: undef, undef, 600) .
682: '</td><td>';
683: }
684: return '<table><tr><td>'.
685: $addOther .
686: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
687: undef,undef,600)
688: .'</td><td>'.
689: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
690: undef,undef,600)
691: .'</td></tr></table>';
1.172 www 692: }
693:
1.193 raeburn 694: sub help_open_menu {
695: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
696: $text = "" if (not defined $text);
697: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 698: if ($env{'browser.interface'} eq 'textual' ||
699: $env{'environment.remote'} eq 'off' ) {
1.193 raeburn 700: $stayOnPage=1;
701: }
702: $width = 620 if (not defined $width);
703: $height = 600 if (not defined $height);
704: my $link='';
1.201 raeburn 705: my $title = &mt('Get help');
1.193 raeburn 706: my $origurl = $ENV{'REQUEST_URI'};
1.227 albertel 707: $origurl=~s|^/~|/priv/|;
1.193 raeburn 708: my $timestamp = time;
709: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
710: $$_ = &Apache::lonnet::escape($$_);
711: }
1.195 albertel 712: if (!$stayOnPage) {
1.193 raeburn 713: $link = "javascript:helpMenu('open')";
1.195 albertel 714: } else {
1.193 raeburn 715: $link = "javascript:helpMenu('display')";
716: }
1.198 raeburn 717: my $banner_link = "/adm/helpmenu?page=banner&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp&stayonpage=$stayOnPage";
1.193 raeburn 718: my $details_link = "/adm/helpmenu?page=body&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp";
1.196 albertel 719: my $template;
720: if ($text ne "") {
721: $template .=
1.265 albertel 722: "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
723: "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.196 albertel 724: }
1.261 albertel 725: my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
1.215 albertel 726: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
1.331 albertel 727: my $start_page =
728: &Apache::loncommon::start_page('Help Menu', undef,
729: {'frameset' => 1,
730: 'js_ready' => 1,
731: 'add_entries' => {
732: 'border' => '0',
733: 'rows' => "105,*",},});
734: my $end_page =
735: &Apache::loncommon::end_page({'frameset' => 1,
736: 'js_ready' => 1,});
737:
1.196 albertel 738: $template .= <<"ENDTEMPLATE";
1.219 albertel 739: <script type="text/javascript">
1.253 albertel 740: // <!-- BEGIN LON-CAPA Internal
741: // <![CDATA[
1.243 raeburn 742: function helpMenu(target) {
743: var caller = this;
744: if (target == 'open') {
745: var newWindow = null;
746: try {
1.262 albertel 747: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
1.243 raeburn 748: }
749: catch(error) {
750: writeHelp(caller);
751: return;
752: }
753: if (newWindow) {
754: caller = newWindow;
755: }
1.193 raeburn 756: }
1.243 raeburn 757: writeHelp(caller);
758: return;
759: }
760: function writeHelp(caller) {
1.331 albertel 761: caller.document.writeln('$start_page<frame name="bannerframe" src="$banner_link" /><frame name="bodyframe" src="$details_link" /> $end_page')
1.243 raeburn 762: caller.document.close()
763: caller.focus()
1.193 raeburn 764: }
1.253 albertel 765: // ]]>
1.219 albertel 766: // END LON-CAPA Internal -->
1.193 raeburn 767: </script>
1.218 albertel 768: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
1.193 raeburn 769: ENDTEMPLATE
1.203 albertel 770: if ($component_help) {
771: if (!$text) {
772: $template=&help_open_topic($component_help,undef,$stayOnPage,
773: $width,$height).' '.$template;
774: } else {
775: my $help_text;
776: $help_text=&Apache::lonnet::unescape($topic);
777: $template='<table><tr><td>'.
778: &help_open_topic($component_help,$help_text,$stayOnPage,
779: $width,$height).'</td><td>'.$template.
780: '</td></tr></table>';
781: }
782: }
1.196 albertel 783: if ($text ne '') { $template.='</td></tr></table>' };
1.193 raeburn 784: return $template;
785: }
786:
1.172 www 787: sub help_open_bug {
788: my ($topic, $text, $stayOnPage, $width, $height) = @_;
1.258 albertel 789: unless ($env{'user.adv'}) { return ''; }
1.172 www 790: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
791: $text = "" if (not defined $text);
792: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 793: if ($env{'browser.interface'} eq 'textual' ||
794: $env{'environment.remote'} eq 'off' ) {
1.172 www 795: $stayOnPage=1;
796: }
1.184 albertel 797: $width = 600 if (not defined $width);
798: $height = 600 if (not defined $height);
1.172 www 799:
800: $topic=~s/\W+/\+/g;
801: my $link='';
802: my $template='';
803: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
804: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
805: if (!$stayOnPage)
806: {
807: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
808: }
809: else
810: {
811: $link = $url;
812: }
813: # Add the text
814: if ($text ne "")
815: {
816: $template .=
817: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
818: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
819: }
820:
821: # Add the graphic
1.179 matthew 822: my $title = &mt('Report a Bug');
1.215 albertel 823: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
1.172 www 824: $template .= <<"ENDTEMPLATE";
1.218 albertel 825: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
1.172 www 826: ENDTEMPLATE
827: if ($text ne '') { $template.='</td></tr></table>' };
828: return $template;
829:
830: }
831:
832: sub help_open_faq {
833: my ($topic, $text, $stayOnPage, $width, $height) = @_;
1.258 albertel 834: unless ($env{'user.adv'}) { return ''; }
1.172 www 835: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
836: $text = "" if (not defined $text);
837: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 838: if ($env{'browser.interface'} eq 'textual' ||
839: $env{'environment.remote'} eq 'off' ) {
1.172 www 840: $stayOnPage=1;
841: }
842: $width = 350 if (not defined $width);
843: $height = 400 if (not defined $height);
844:
845: $topic=~s/\W+/\+/g;
846: my $link='';
847: my $template='';
848: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
849: if (!$stayOnPage)
850: {
851: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
852: }
853: else
854: {
855: $link = $url;
856: }
857:
858: # Add the text
859: if ($text ne "")
860: {
861: $template .=
1.173 www 862: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
863: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.172 www 864: }
865:
866: # Add the graphic
1.179 matthew 867: my $title = &mt('View the FAQ');
1.215 albertel 868: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
1.172 www 869: $template .= <<"ENDTEMPLATE";
1.218 albertel 870: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
1.172 www 871: ENDTEMPLATE
872: if ($text ne '') { $template.='</td></tr></table>' };
873: return $template;
874:
1.44 bowersj2 875: }
1.37 matthew 876:
1.180 matthew 877: ###############################################################
878: ###############################################################
879:
1.45 matthew 880: =pod
881:
1.256 matthew 882: =item * change_content_javascript():
883:
884: This and the next function allow you to create small sections of an
885: otherwise static HTML page that you can update on the fly with
886: Javascript, even in Netscape 4.
887:
888: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
889: must be written to the HTML page once. It will prove the Javascript
890: function "change(name, content)". Calling the change function with the
891: name of the section
892: you want to update, matching the name passed to C<changable_area>, and
893: the new content you want to put in there, will put the content into
894: that area.
895:
896: B<Note>: Netscape 4 only reserves enough space for the changable area
897: to contain room for the original contents. You need to "make space"
898: for whatever changes you wish to make, and be B<sure> to check your
899: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
900: it's adequate for updating a one-line status display, but little more.
901: This script will set the space to 100% width, so you only need to
902: worry about height in Netscape 4.
903:
904: Modern browsers are much less limiting, and if you can commit to the
905: user not using Netscape 4, this feature may be used freely with
906: pretty much any HTML.
907:
908: =cut
909:
910: sub change_content_javascript {
911: # If we're on Netscape 4, we need to use Layer-based code
1.258 albertel 912: if ($env{'browser.type'} eq 'netscape' &&
913: $env{'browser.version'} =~ /^4\./) {
1.256 matthew 914: return (<<NETSCAPE4);
915: function change(name, content) {
916: doc = document.layers[name+"___escape"].layers[0].document;
917: doc.open();
918: doc.write(content);
919: doc.close();
920: }
921: NETSCAPE4
922: } else {
923: # Otherwise, we need to use semi-standards-compliant code
924: # (technically, "innerHTML" isn't standard but the equivalent
925: # is really scary, and every useful browser supports it
926: return (<<DOMBASED);
927: function change(name, content) {
928: element = document.getElementById(name);
929: element.innerHTML = content;
930: }
931: DOMBASED
932: }
933: }
934:
935: =pod
936:
937: =item * changable_area($name, $origContent):
938:
939: This provides a "changable area" that can be modified on the fly via
940: the Javascript code provided in C<change_content_javascript>. $name is
941: the name you will use to reference the area later; do not repeat the
942: same name on a given HTML page more then once. $origContent is what
943: the area will originally contain, which can be left blank.
944:
945: =cut
946:
947: sub changable_area {
948: my ($name, $origContent) = @_;
949:
1.258 albertel 950: if ($env{'browser.type'} eq 'netscape' &&
951: $env{'browser.version'} =~ /^4\./) {
1.256 matthew 952: # If this is netscape 4, we need to use the Layer tag
953: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
954: } else {
955: return "<span id='$name'>$origContent</span>";
956: }
957: }
958:
959: =pod
960:
961: =back
962:
963: =head1 Excel and CSV file utility routines
964:
965: =over 4
966:
967: =cut
968:
969: ###############################################################
970: ###############################################################
971:
972: =pod
973:
1.112 bowersj2 974: =item * csv_translate($text)
1.37 matthew 975:
1.185 www 976: Translate $text to allow it to be output as a 'comma separated values'
1.37 matthew 977: format.
978:
979: =cut
980:
1.180 matthew 981: ###############################################################
982: ###############################################################
1.37 matthew 983: sub csv_translate {
984: my $text = shift;
985: $text =~ s/\"/\"\"/g;
1.209 albertel 986: $text =~ s/\n/ /g;
1.37 matthew 987: return $text;
988: }
1.180 matthew 989:
990: ###############################################################
991: ###############################################################
992:
993: =pod
994:
995: =item * define_excel_formats
996:
997: Define some commonly used Excel cell formats.
998:
999: Currently supported formats:
1000:
1001: =over 4
1002:
1003: =item header
1004:
1005: =item bold
1006:
1007: =item h1
1008:
1009: =item h2
1010:
1011: =item h3
1012:
1.256 matthew 1013: =item h4
1014:
1015: =item i
1016:
1.180 matthew 1017: =item date
1018:
1019: =back
1020:
1021: Inputs: $workbook
1022:
1023: Returns: $format, a hash reference.
1024:
1025: =cut
1026:
1027: ###############################################################
1028: ###############################################################
1029: sub define_excel_formats {
1030: my ($workbook) = @_;
1031: my $format;
1032: $format->{'header'} = $workbook->add_format(bold => 1,
1033: bottom => 1,
1034: align => 'center');
1035: $format->{'bold'} = $workbook->add_format(bold=>1);
1036: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1037: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1038: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1.255 matthew 1039: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
1.246 matthew 1040: $format->{'i'} = $workbook->add_format(italic=>1);
1.180 matthew 1041: $format->{'date'} = $workbook->add_format(num_format=>
1.207 matthew 1042: 'mm/dd/yyyy hh:mm:ss');
1.180 matthew 1043: return $format;
1044: }
1045:
1046: ###############################################################
1047: ###############################################################
1.113 bowersj2 1048:
1049: =pod
1050:
1.256 matthew 1051: =item * create_workbook
1.255 matthew 1052:
1053: Create an Excel worksheet. If it fails, output message on the
1054: request object and return undefs.
1055:
1056: Inputs: Apache request object
1057:
1058: Returns (undef) on failure,
1059: Excel worksheet object, scalar with filename, and formats
1060: from &Apache::loncommon::define_excel_formats on success
1061:
1062: =cut
1063:
1064: ###############################################################
1065: ###############################################################
1066: sub create_workbook {
1067: my ($r) = @_;
1068: #
1069: # Create the excel spreadsheet
1070: my $filename = '/prtspool/'.
1.258 albertel 1071: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1.255 matthew 1072: time.'_'.rand(1000000000).'.xls';
1073: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1074: if (! defined($workbook)) {
1075: $r->log_error("Error creating excel spreadsheet $filename: $!");
1076: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1077: "This error has been logged. ".
1078: "Please alert your LON-CAPA administrator").
1079: '</p>');
1080: return (undef);
1081: }
1082: #
1083: $workbook->set_tempdir('/home/httpd/perl/tmp');
1084: #
1085: my $format = &Apache::loncommon::define_excel_formats($workbook);
1086: return ($workbook,$filename,$format);
1087: }
1088:
1089: ###############################################################
1090: ###############################################################
1091:
1092: =pod
1093:
1.256 matthew 1094: =item * create_text_file
1.113 bowersj2 1095:
1.256 matthew 1096: Create a file to write to and eventually make available to the usre.
1097: If file creation fails, outputs an error message on the request object and
1098: return undefs.
1.113 bowersj2 1099:
1.256 matthew 1100: Inputs: Apache request object, and file suffix
1.113 bowersj2 1101:
1.256 matthew 1102: Returns (undef) on failure,
1103: Filehandle and filename on success.
1.113 bowersj2 1104:
1105: =cut
1106:
1.256 matthew 1107: ###############################################################
1108: ###############################################################
1109: sub create_text_file {
1110: my ($r,$suffix) = @_;
1111: if (! defined($suffix)) { $suffix = 'txt'; };
1112: my $fh;
1113: my $filename = '/prtspool/'.
1.258 albertel 1114: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1.256 matthew 1115: time.'_'.rand(1000000000).'.'.$suffix;
1116: $fh = Apache::File->new('>/home/httpd'.$filename);
1117: if (! defined($fh)) {
1118: $r->log_error("Couldn't open $filename for output $!");
1119: $r->print("Problems occured in creating the output file. ".
1120: "This error has been logged. ".
1121: "Please alert your LON-CAPA administrator.");
1.113 bowersj2 1122: }
1.256 matthew 1123: return ($fh,$filename)
1.113 bowersj2 1124: }
1125:
1126:
1.256 matthew 1127: =pod
1.113 bowersj2 1128:
1129: =back
1130:
1131: =cut
1.37 matthew 1132:
1133: ###############################################################
1.33 matthew 1134: ## Home server <option> list generating code ##
1135: ###############################################################
1.35 matthew 1136:
1.45 matthew 1137: =pod
1138:
1.112 bowersj2 1139: =head1 Home Server option list generating code
1140:
1141: =over 4
1142:
1143: =item * get_domains()
1.35 matthew 1144:
1145: Returns an array containing each of the domains listed in the hosts.tab
1146: file.
1147:
1148: =cut
1149:
1150: #-------------------------------------------
1.34 matthew 1151: sub get_domains {
1152: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1153: my @domains;
1154: my %seen;
1155: foreach (sort values(%Apache::lonnet::hostdom)) {
1.169 www 1156: push (@domains,$_) unless $seen{$_}++;
1.34 matthew 1157: }
1158: return @domains;
1159: }
1.88 www 1160:
1.169 www 1161: # ------------------------------------------
1162:
1163: sub domain_select {
1164: my ($name,$value,$multiple)=@_;
1165: my %domains=map {
1166: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1167: } &get_domains;
1168: if ($multiple) {
1169: $domains{''}=&mt('Any domain');
1.287 albertel 1170: return &multiple_select_form($name,$value,4,\%domains);
1.169 www 1171: } else {
1172: return &select_form($name,$value,%domains);
1173: }
1174: }
1175:
1.282 albertel 1176: #-------------------------------------------
1177:
1178: =pod
1179:
1.287 albertel 1180: =item * multiple_select_form($name,$value,$size,$hash,$order)
1.282 albertel 1181:
1182: Returns a string containing a <select> element int multiple mode
1183:
1184:
1185: Args:
1186: $name - name of the <select> element
1187: $value - sclara or array ref of values that should already be selected
1188: $size - number of rows long the select element is
1.283 albertel 1189: $hash - the elements should be 'option' => 'shown text'
1.282 albertel 1190: (shown text should already have been &mt())
1.284 albertel 1191: $order - (optional) array ref of the order to show the elments in
1.283 albertel 1192:
1.282 albertel 1193: =cut
1194:
1195: #-------------------------------------------
1.169 www 1196: sub multiple_select_form {
1.284 albertel 1197: my ($name,$value,$size,$hash,$order)=@_;
1.169 www 1198: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1199: my $output='';
1.191 matthew 1200: if (! defined($size)) {
1201: $size = 4;
1.283 albertel 1202: if (scalar(keys(%$hash))<4) {
1203: $size = scalar(keys(%$hash));
1.191 matthew 1204: }
1205: }
1.169 www 1206: $output.="\n<select name='$name' size='$size' multiple='1'>";
1.286 banghart 1207: my @order = ref($order) ? @$order
1.284 albertel 1208: : sort(keys(%$hash));
1209: foreach my $key (@order) {
1210: $output.='<option value="'.$key.'" ';
1211: $output.='selected="selected" ' if ($selected{$key});
1212: $output.='>'.$hash->{$key}."</option>\n";
1.169 www 1213: }
1214: $output.="</select>\n";
1215: return $output;
1216: }
1217:
1.88 www 1218: #-------------------------------------------
1219:
1220: =pod
1221:
1.112 bowersj2 1222: =item * select_form($defdom,$name,%hash)
1.88 www 1223:
1224: Returns a string containing a <select name='$name' size='1'> form to
1225: allow a user to select options from a hash option_name => displayed text.
1226: See lonrights.pm for an example invocation and use.
1227:
1228: =cut
1229:
1230: #-------------------------------------------
1231: sub select_form {
1232: my ($def,$name,%hash) = @_;
1233: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1.128 albertel 1234: my @keys;
1235: if (exists($hash{'select_form_order'})) {
1236: @keys=@{$hash{'select_form_order'}};
1237: } else {
1238: @keys=sort(keys(%hash));
1239: }
1240: foreach (@keys) {
1.88 www 1241: $selectform.="<option value=\"$_\" ".
1.253 albertel 1242: ($_ eq $def ? 'selected="selected" ' : '').
1.119 www 1243: ">".&mt($hash{$_})."</option>\n";
1.88 www 1244: }
1245: $selectform.="</select>";
1246: return $selectform;
1247: }
1248:
1.167 www 1249: sub gradeleveldescription {
1250: my $gradelevel=shift;
1251: my %gradelevels=(0 => 'Not specified',
1252: 1 => 'Grade 1',
1253: 2 => 'Grade 2',
1254: 3 => 'Grade 3',
1255: 4 => 'Grade 4',
1256: 5 => 'Grade 5',
1257: 6 => 'Grade 6',
1258: 7 => 'Grade 7',
1259: 8 => 'Grade 8',
1260: 9 => 'Grade 9',
1261: 10 => 'Grade 10',
1262: 11 => 'Grade 11',
1263: 12 => 'Grade 12',
1264: 13 => 'Grade 13',
1265: 14 => '100 Level',
1266: 15 => '200 Level',
1267: 16 => '300 Level',
1268: 17 => '400 Level',
1269: 18 => 'Graduate Level');
1270: return &mt($gradelevels{$gradelevel});
1271: }
1272:
1.163 www 1273: sub select_level_form {
1274: my ($deflevel,$name)=@_;
1275: unless ($deflevel) { $deflevel=0; }
1.167 www 1276: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1277: for (my $i=0; $i<=18; $i++) {
1278: $selectform.="<option value=\"$i\" ".
1.253 albertel 1279: ($i==$deflevel ? 'selected="selected" ' : '').
1.167 www 1280: ">".&gradeleveldescription($i)."</option>\n";
1281: }
1282: $selectform.="</select>";
1283: return $selectform;
1.163 www 1284: }
1.167 www 1285:
1.35 matthew 1286: #-------------------------------------------
1287:
1.45 matthew 1288: =pod
1289:
1.112 bowersj2 1290: =item * select_dom_form($defdom,$name,$includeempty)
1.35 matthew 1291:
1292: Returns a string containing a <select name='$name' size='1'> form to
1293: allow a user to select the domain to preform an operation in.
1294: See loncreateuser.pm for an example invocation and use.
1295:
1.90 www 1296: If the $includeempty flag is set, it also includes an empty choice ("no domain
1297: selected");
1298:
1.35 matthew 1299: =cut
1300:
1301: #-------------------------------------------
1.34 matthew 1302: sub select_dom_form {
1.90 www 1303: my ($defdom,$name,$includeempty) = @_;
1.34 matthew 1304: my @domains = get_domains();
1.90 www 1305: if ($includeempty) { @domains=('',@domains); }
1.34 matthew 1306: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1307: foreach (@domains) {
1308: $selectdomain.="<option value=\"$_\" ".
1.253 albertel 1309: ($_ eq $defdom ? 'selected="selected" ' : '').
1.34 matthew 1310: ">$_</option>\n";
1311: }
1312: $selectdomain.="</select>";
1313: return $selectdomain;
1314: }
1315:
1.35 matthew 1316: #-------------------------------------------
1317:
1.45 matthew 1318: =pod
1319:
1.112 bowersj2 1320: =item * get_library_servers($domain)
1.35 matthew 1321:
1322: Returns a hash which contains keys like '103l3' and values like
1323: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1324: given $domain.
1325:
1326: =cut
1327:
1328: #-------------------------------------------
1.52 matthew 1329: sub get_library_servers {
1.33 matthew 1330: my $domain = shift;
1.52 matthew 1331: my %library_servers;
1.33 matthew 1332: foreach (keys(%Apache::lonnet::libserv)) {
1333: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1.52 matthew 1334: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1.33 matthew 1335: }
1336: }
1.52 matthew 1337: return %library_servers;
1.33 matthew 1338: }
1339:
1.35 matthew 1340: #-------------------------------------------
1341:
1.45 matthew 1342: =pod
1343:
1.112 bowersj2 1344: =item * home_server_option_list($domain)
1.35 matthew 1345:
1346: returns a string which contains an <option> list to be used in a
1347: <select> form input. See loncreateuser.pm for an example.
1348:
1349: =cut
1350:
1351: #-------------------------------------------
1.33 matthew 1352: sub home_server_option_list {
1353: my $domain = shift;
1.52 matthew 1354: my %servers = &get_library_servers($domain);
1.33 matthew 1355: my $result = '';
1356: foreach (sort keys(%servers)) {
1357: $result.=
1358: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1359: }
1360: return $result;
1361: }
1.112 bowersj2 1362:
1363: =pod
1364:
1365: =back
1366:
1367: =cut
1.87 matthew 1368:
1369: ###############################################################
1.112 bowersj2 1370: ## Decoding User Agent ##
1.87 matthew 1371: ###############################################################
1372:
1373: =pod
1374:
1.112 bowersj2 1375: =head1 Decoding the User Agent
1376:
1377: =over 4
1378:
1379: =item * &decode_user_agent()
1.87 matthew 1380:
1381: Inputs: $r
1382:
1383: Outputs:
1384:
1385: =over 4
1386:
1.112 bowersj2 1387: =item * $httpbrowser
1.87 matthew 1388:
1.112 bowersj2 1389: =item * $clientbrowser
1.87 matthew 1390:
1.112 bowersj2 1391: =item * $clientversion
1.87 matthew 1392:
1.112 bowersj2 1393: =item * $clientmathml
1.87 matthew 1394:
1.112 bowersj2 1395: =item * $clientunicode
1.87 matthew 1396:
1.112 bowersj2 1397: =item * $clientos
1.87 matthew 1398:
1399: =back
1400:
1.157 matthew 1401: =back
1402:
1.87 matthew 1403: =cut
1404:
1405: ###############################################################
1406: ###############################################################
1407: sub decode_user_agent {
1.247 albertel 1408: my ($r)=@_;
1.87 matthew 1409: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1410: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1411: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1.247 albertel 1412: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1.87 matthew 1413: my $clientbrowser='unknown';
1414: my $clientversion='0';
1415: my $clientmathml='';
1416: my $clientunicode='0';
1417: for (my $i=0;$i<=$#browsertype;$i++) {
1418: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1419: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1420: $clientbrowser=$bname;
1421: $httpbrowser=~/$vreg/i;
1422: $clientversion=$1;
1423: $clientmathml=($clientversion>=$minv);
1424: $clientunicode=($clientversion>=$univ);
1425: }
1426: }
1427: my $clientos='unknown';
1428: if (($httpbrowser=~/linux/i) ||
1429: ($httpbrowser=~/unix/i) ||
1430: ($httpbrowser=~/ux/i) ||
1431: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1432: if (($httpbrowser=~/vax/i) ||
1433: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1434: if ($httpbrowser=~/next/i) { $clientos='next'; }
1435: if (($httpbrowser=~/mac/i) ||
1436: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1437: if ($httpbrowser=~/win/i) { $clientos='win'; }
1438: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1439: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1440: $clientunicode,$clientos,);
1441: }
1442:
1.32 matthew 1443: ###############################################################
1444: ## Authentication changing form generation subroutines ##
1445: ###############################################################
1446: ##
1447: ## All of the authform_xxxxxxx subroutines take their inputs in a
1448: ## hash, and have reasonable default values.
1449: ##
1450: ## formname = the name given in the <form> tag.
1.35 matthew 1451: #-------------------------------------------
1452:
1.45 matthew 1453: =pod
1454:
1.112 bowersj2 1455: =head1 Authentication Routines
1456:
1457: =over 4
1458:
1459: =item * authform_xxxxxx
1.35 matthew 1460:
1461: The authform_xxxxxx subroutines provide javascript and html forms which
1462: handle some of the conveniences required for authentication forms.
1463: This is not an optimal method, but it works.
1464:
1465: See loncreateuser.pm for invocation and use examples.
1466:
1467: =over 4
1468:
1.112 bowersj2 1469: =item * authform_header
1.35 matthew 1470:
1.112 bowersj2 1471: =item * authform_authorwarning
1.35 matthew 1472:
1.112 bowersj2 1473: =item * authform_nochange
1.35 matthew 1474:
1.112 bowersj2 1475: =item * authform_kerberos
1.35 matthew 1476:
1.112 bowersj2 1477: =item * authform_internal
1.35 matthew 1478:
1.112 bowersj2 1479: =item * authform_filesystem
1.35 matthew 1480:
1481: =back
1482:
1.157 matthew 1483: =back
1484:
1.35 matthew 1485: =cut
1486:
1487: #-------------------------------------------
1.32 matthew 1488: sub authform_header{
1489: my %in = (
1490: formname => 'cu',
1.80 albertel 1491: kerb_def_dom => '',
1.32 matthew 1492: @_,
1493: );
1494: $in{'formname'} = 'document.' . $in{'formname'};
1495: my $result='';
1.80 albertel 1496:
1497: #---------------------------------------------- Code for upper case translation
1498: my $Javascript_toUpperCase;
1499: unless ($in{kerb_def_dom}) {
1500: $Javascript_toUpperCase =<<"END";
1501: switch (choice) {
1502: case 'krb': currentform.elements[choicearg].value =
1503: currentform.elements[choicearg].value.toUpperCase();
1504: break;
1505: default:
1506: }
1507: END
1508: } else {
1509: $Javascript_toUpperCase = "";
1510: }
1511:
1.165 raeburn 1512: my $radioval = "'nochange'";
1.174 matthew 1513: if (exists($in{'curr_authtype'}) &&
1514: defined($in{'curr_authtype'}) &&
1515: $in{'curr_authtype'} ne '') {
1516: $radioval = "'$in{'curr_authtype'}arg'";
1517: }
1.165 raeburn 1518: my $argfield = 'null';
1519: if ( grep/^mode$/,(keys %in) ) {
1520: if ($in{'mode'} eq 'modifycourse') {
1521: if ( grep/^curr_authtype$/,(keys %in) ) {
1522: $radioval = "'$in{'curr_authtype'}'";
1523: }
1524: if ( grep/^curr_autharg$/,(keys %in) ) {
1525: unless ($in{'curr_autharg'} eq '') {
1526: $argfield = "'$in{'curr_autharg'}'";
1527: }
1528: }
1529: }
1530: }
1531:
1.32 matthew 1532: $result.=<<"END";
1533: var current = new Object();
1.165 raeburn 1534: current.radiovalue = $radioval;
1535: current.argfield = $argfield;
1.32 matthew 1536:
1537: function changed_radio(choice,currentform) {
1538: var choicearg = choice + 'arg';
1539: // If a radio button in changed, we need to change the argfield
1540: if (current.radiovalue != choice) {
1541: current.radiovalue = choice;
1542: if (current.argfield != null) {
1543: currentform.elements[current.argfield].value = '';
1544: }
1545: if (choice == 'nochange') {
1546: current.argfield = null;
1547: } else {
1548: current.argfield = choicearg;
1549: switch(choice) {
1550: case 'krb':
1551: currentform.elements[current.argfield].value =
1552: "$in{'kerb_def_dom'}";
1553: break;
1554: default:
1555: break;
1556: }
1557: }
1558: }
1559: return;
1560: }
1.22 www 1561:
1.32 matthew 1562: function changed_text(choice,currentform) {
1563: var choicearg = choice + 'arg';
1564: if (currentform.elements[choicearg].value !='') {
1.80 albertel 1565: $Javascript_toUpperCase
1.32 matthew 1566: // clear old field
1567: if ((current.argfield != choicearg) && (current.argfield != null)) {
1568: currentform.elements[current.argfield].value = '';
1569: }
1570: current.argfield = choicearg;
1571: }
1572: set_auth_radio_buttons(choice,currentform);
1573: return;
1.20 www 1574: }
1.32 matthew 1575:
1576: function set_auth_radio_buttons(newvalue,currentform) {
1577: var i=0;
1578: while (i < currentform.login.length) {
1579: if (currentform.login[i].value == newvalue) { break; }
1580: i++;
1581: }
1582: if (i == currentform.login.length) {
1583: return;
1584: }
1585: current.radiovalue = newvalue;
1586: currentform.login[i].checked = true;
1587: return;
1588: }
1589: END
1590: return $result;
1591: }
1592:
1593: sub authform_authorwarning{
1594: my $result='';
1.144 matthew 1595: $result='<i>'.
1596: &mt('As a general rule, only authors or co-authors should be '.
1597: 'filesystem authenticated '.
1598: '(which allows access to the server filesystem).')."</i>\n";
1.32 matthew 1599: return $result;
1600: }
1601:
1602: sub authform_nochange{
1603: my %in = (
1604: formname => 'document.cu',
1605: kerb_def_dom => 'MSU.EDU',
1606: @_,
1607: );
1.281 albertel 1608: my $result = '<label>'.&mt('[_1] Do not change login data',
1.144 matthew 1609: '<input type="radio" name="login" value="nochange" '.
1610: 'checked="checked" onclick="'.
1.281 albertel 1611: "javascript:changed_radio('nochange',$in{'formname'});".'" />').
1612: '</label>';
1.32 matthew 1613: return $result;
1614: }
1615:
1616: sub authform_kerberos{
1617: my %in = (
1618: formname => 'document.cu',
1619: kerb_def_dom => 'MSU.EDU',
1.80 albertel 1620: kerb_def_auth => 'krb4',
1.32 matthew 1621: @_,
1622: );
1.165 raeburn 1623: my ($check4,$check5,$krbarg);
1.80 albertel 1624: if ($in{'kerb_def_auth'} eq 'krb5') {
1625: $check5 = " checked=\"on\"";
1626: } else {
1627: $check4 = " checked=\"on\"";
1628: }
1.165 raeburn 1629: $krbarg = $in{'kerb_def_dom'};
1630:
1631: my $krbcheck = "";
1632: if ( grep/^curr_authtype$/,(keys %in) ) {
1633: if ($in{'curr_authtype'} =~ m/^krb/) {
1634: $krbcheck = " checked=\"on\"";
1635: if ( grep/^curr_autharg$/,(keys %in) ) {
1636: $krbarg = $in{'curr_autharg'};
1637: }
1638: }
1639: }
1640:
1.144 matthew 1641: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1642: my $result .= &mt
1643: ('[_1] Kerberos authenticated with domain [_2] '.
1.281 albertel 1644: '[_3] Version 4 [_4] Version 5 [_5]',
1645: '<label><input type="radio" name="login" value="krb" '.
1.165 raeburn 1646: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1.281 albertel 1647: '</label><input type="text" size="10" name="krbarg" '.
1.165 raeburn 1648: 'value="'.$krbarg.'" '.
1.144 matthew 1649: 'onchange="'.$jscall.'" />',
1.281 albertel 1650: '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
1651: '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
1652: '</label>');
1.32 matthew 1653: return $result;
1654: }
1655:
1656: sub authform_internal{
1657: my %args = (
1658: formname => 'document.cu',
1659: kerb_def_dom => 'MSU.EDU',
1660: @_,
1661: );
1.165 raeburn 1662:
1663: my $intcheck = "";
1664: my $intarg = 'value=""';
1665: if ( grep/^curr_authtype$/,(keys %args) ) {
1666: if ($args{'curr_authtype'} eq 'int') {
1667: $intcheck = " checked=\"on\"";
1668: if ( grep/^curr_autharg$/,(keys %args) ) {
1669: $intarg = "value=\"$args{'curr_autharg'}\"";
1670: }
1671: }
1672: }
1673:
1.144 matthew 1674: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1675: my $result.=&mt
1676: ('[_1] Internally authenticated (with initial password [_2])',
1.281 albertel 1677: '<label><input type="radio" name="login" value="int" '.$intcheck.
1.165 raeburn 1678: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1679: '</label><input type="text" size="10" name="intarg" '.$intarg.
1.165 raeburn 1680: ' onchange="'.$jscall.'" />');
1.32 matthew 1681: return $result;
1682: }
1683:
1684: sub authform_local{
1685: my %in = (
1686: formname => 'document.cu',
1687: kerb_def_dom => 'MSU.EDU',
1688: @_,
1689: );
1.165 raeburn 1690:
1691: my $loccheck = "";
1692: my $locarg = 'value=""';
1693: if ( grep/^curr_authtype$/,(keys %in) ) {
1694: if ($in{'curr_authtype'} eq 'loc') {
1695: $loccheck = " checked=\"on\"";
1696: if ( grep/^curr_autharg$/,(keys %in) ) {
1697: $locarg = "value=\"$in{'curr_autharg'}\"";
1698: }
1699: }
1700: }
1701:
1.144 matthew 1702: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1.160 matthew 1703: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1.281 albertel 1704: '<label><input type="radio" name="login" value="loc" '.$loccheck.
1.165 raeburn 1705: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1706: '</label><input type="text" size="10" name="locarg" '.$locarg.
1.165 raeburn 1707: ' onchange="'.$jscall.'" />');
1.32 matthew 1708: return $result;
1709: }
1710:
1711: sub authform_filesystem{
1712: my %in = (
1713: formname => 'document.cu',
1714: kerb_def_dom => 'MSU.EDU',
1715: @_,
1716: );
1.144 matthew 1717: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1718: my $result.= &mt
1719: ('[_1] Filesystem Authenticated (with initial password [_2])',
1.281 albertel 1720: '<label><input type="radio" name="login" value="fsys" '.
1.144 matthew 1721: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1722: '</label><input type="text" size="10" name="fsysarg" value="" '.
1.144 matthew 1723: 'onchange="'.$jscall.'" />');
1.32 matthew 1724: return $result;
1725: }
1726:
1.80 albertel 1727: ###############################################################
1728: ## Get Authentication Defaults for Domain ##
1729: ###############################################################
1730:
1731: =pod
1732:
1.112 bowersj2 1733: =head1 Domains and Authentication
1734:
1735: Returns default authentication type and an associated argument as
1736: listed in file 'domain.tab'.
1737:
1738: =over 4
1739:
1740: =item * get_auth_defaults
1.80 albertel 1741:
1742: get_auth_defaults($target_domain) returns the default authentication
1743: type and an associated argument (initial password or a kerberos domain).
1744: These values are stored in lonTabs/domain.tab
1745:
1746: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1747:
1748: If target_domain is not found in domain.tab, returns nothing ('').
1749:
1750: =cut
1751:
1752: #-------------------------------------------
1753: sub get_auth_defaults {
1754: my $domain=shift;
1755: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1756: }
1757: ###############################################################
1758: ## End Get Authentication Defaults for Domain ##
1759: ###############################################################
1760:
1761: ###############################################################
1762: ## Get Kerberos Defaults for Domain ##
1763: ###############################################################
1764: ##
1765: ## Returns default kerberos version and an associated argument
1766: ## as listed in file domain.tab. If not listed, provides
1767: ## appropriate default domain and kerberos version.
1768: ##
1769: #-------------------------------------------
1770:
1771: =pod
1772:
1.112 bowersj2 1773: =item * get_kerberos_defaults
1.80 albertel 1774:
1775: get_kerberos_defaults($target_domain) returns the default kerberos
1776: version and domain. If not found in domain.tabs, it defaults to
1777: version 4 and the domain of the server.
1778:
1779: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1780:
1781: =cut
1782:
1783: #-------------------------------------------
1784: sub get_kerberos_defaults {
1785: my $domain=shift;
1786: my ($krbdef,$krbdefdom) =
1787: &Apache::loncommon::get_auth_defaults($domain);
1788: unless ($krbdef =~/^krb/ && $krbdefdom) {
1789: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1790: my $krbdefdom=$1;
1791: $krbdefdom=~tr/a-z/A-Z/;
1792: $krbdef = "krb4";
1793: }
1794: return ($krbdef,$krbdefdom);
1795: }
1.112 bowersj2 1796:
1797: =pod
1798:
1799: =back
1800:
1801: =cut
1.32 matthew 1802:
1.46 matthew 1803: ###############################################################
1804: ## Thesaurus Functions ##
1805: ###############################################################
1.20 www 1806:
1.46 matthew 1807: =pod
1.20 www 1808:
1.112 bowersj2 1809: =head1 Thesaurus Functions
1810:
1811: =over 4
1812:
1813: =item * initialize_keywords
1.46 matthew 1814:
1815: Initializes the package variable %Keywords if it is empty. Uses the
1816: package variable $thesaurus_db_file.
1817:
1818: =cut
1819:
1820: ###################################################
1821:
1822: sub initialize_keywords {
1823: return 1 if (scalar keys(%Keywords));
1824: # If we are here, %Keywords is empty, so fill it up
1825: # Make sure the file we need exists...
1826: if (! -e $thesaurus_db_file) {
1827: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1828: " failed because it does not exist");
1829: return 0;
1830: }
1831: # Set up the hash as a database
1832: my %thesaurus_db;
1833: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1834: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1835: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1836: $thesaurus_db_file);
1837: return 0;
1838: }
1839: # Get the average number of appearances of a word.
1840: my $avecount = $thesaurus_db{'average.count'};
1841: # Put keywords (those that appear > average) into %Keywords
1842: while (my ($word,$data)=each (%thesaurus_db)) {
1843: my ($count,undef) = split /:/,$data;
1844: $Keywords{$word}++ if ($count > $avecount);
1845: }
1846: untie %thesaurus_db;
1847: # Remove special values from %Keywords.
1848: foreach ('total.count','average.count') {
1849: delete($Keywords{$_}) if (exists($Keywords{$_}));
1850: }
1851: return 1;
1852: }
1853:
1854: ###################################################
1855:
1856: =pod
1857:
1.112 bowersj2 1858: =item * keyword($word)
1.46 matthew 1859:
1860: Returns true if $word is a keyword. A keyword is a word that appears more
1861: than the average number of times in the thesaurus database. Calls
1862: &initialize_keywords
1863:
1864: =cut
1865:
1866: ###################################################
1.20 www 1867:
1868: sub keyword {
1.46 matthew 1869: return if (!&initialize_keywords());
1870: my $word=lc(shift());
1871: $word=~s/\W//g;
1872: return exists($Keywords{$word});
1.20 www 1873: }
1.46 matthew 1874:
1875: ###############################################################
1876:
1877: =pod
1.20 www 1878:
1.112 bowersj2 1879: =item * get_related_words
1.46 matthew 1880:
1.160 matthew 1881: Look up a word in the thesaurus. Takes a scalar argument and returns
1.46 matthew 1882: an array of words. If the keyword is not in the thesaurus, an empty array
1883: will be returned. The order of the words returned is determined by the
1884: database which holds them.
1885:
1886: Uses global $thesaurus_db_file.
1887:
1888: =cut
1889:
1890: ###############################################################
1891: sub get_related_words {
1892: my $keyword = shift;
1893: my %thesaurus_db;
1894: if (! -e $thesaurus_db_file) {
1895: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1896: "failed because the file does not exist");
1897: return ();
1898: }
1899: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1900: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1901: return ();
1902: }
1903: my @Words=();
1904: if (exists($thesaurus_db{$keyword})) {
1905: $_ = $thesaurus_db{$keyword};
1906: (undef,@Words) = split/:/; # The first element is the number of times
1907: # the word appears. We do not need it now.
1908: for (my $i=0;$i<=$#Words;$i++) {
1909: ($Words[$i],undef)= split/\,/,$Words[$i];
1.20 www 1910: }
1911: }
1.46 matthew 1912: untie %thesaurus_db;
1913: return @Words;
1.14 harris41 1914: }
1.46 matthew 1915:
1.112 bowersj2 1916: =pod
1917:
1918: =back
1919:
1920: =cut
1.61 www 1921:
1922: # -------------------------------------------------------------- Plaintext name
1.81 albertel 1923: =pod
1924:
1.112 bowersj2 1925: =head1 User Name Functions
1926:
1927: =over 4
1928:
1.226 albertel 1929: =item * plainname($uname,$udom,$first)
1.81 albertel 1930:
1.112 bowersj2 1931: Takes a users logon name and returns it as a string in
1.226 albertel 1932: "first middle last generation" form
1933: if $first is set to 'lastname' then it returns it as
1934: 'lastname generation, firstname middlename' if their is a lastname
1.81 albertel 1935:
1936: =cut
1.61 www 1937:
1.295 www 1938:
1.81 albertel 1939: ###############################################################
1.61 www 1940: sub plainname {
1.226 albertel 1941: my ($uname,$udom,$first)=@_;
1.295 www 1942: my %names=&getnames($uname,$udom);
1.226 albertel 1943: my $name=&Apache::lonnet::format_name($names{'firstname'},
1944: $names{'middlename'},
1945: $names{'lastname'},
1946: $names{'generation'},$first);
1947: $name=~s/^\s+//;
1.62 www 1948: $name=~s/\s+$//;
1949: $name=~s/\s+/ /g;
1.190 albertel 1950: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1.62 www 1951: return $name;
1.61 www 1952: }
1.66 www 1953:
1954: # -------------------------------------------------------------------- Nickname
1.81 albertel 1955: =pod
1956:
1.112 bowersj2 1957: =item * nickname($uname,$udom)
1.81 albertel 1958:
1959: Gets a users name and returns it as a string as
1960:
1961: ""nickname""
1.66 www 1962:
1.81 albertel 1963: if the user has a nickname or
1964:
1965: "first middle last generation"
1966:
1967: if the user does not
1968:
1969: =cut
1.66 www 1970:
1971: sub nickname {
1972: my ($uname,$udom)=@_;
1.295 www 1973: my %names=&getnames($uname,$udom);
1.68 albertel 1974: my $name=$names{'nickname'};
1.66 www 1975: if ($name) {
1976: $name='"'.$name.'"';
1977: } else {
1978: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1979: $names{'lastname'}.' '.$names{'generation'};
1980: $name=~s/\s+$//;
1981: $name=~s/\s+/ /g;
1982: }
1983: return $name;
1984: }
1985:
1.295 www 1986: sub getnames {
1987: my ($uname,$udom)=@_;
1988: my $id=$uname.':'.$udom;
1989: my ($names,$cached)=&Apache::lonnet::is_cached_new('namescache',$id);
1990: if ($cached) {
1991: return %{$names};
1992: } else {
1993: my %loadnames=&Apache::lonnet::get('environment',
1994: ['firstname','middlename','lastname','generation','nickname'],
1995: $udom,$uname);
1996: &Apache::lonnet::do_cache_new('namescache',$id,\%loadnames);
1997: return %loadnames;
1998: }
1999: }
1.61 www 2000:
2001: # ------------------------------------------------------------------ Screenname
1.81 albertel 2002:
2003: =pod
2004:
1.112 bowersj2 2005: =item * screenname($uname,$udom)
1.81 albertel 2006:
2007: Gets a users screenname and returns it as a string
2008:
2009: =cut
1.61 www 2010:
2011: sub screenname {
2012: my ($uname,$udom)=@_;
1.258 albertel 2013: if ($uname eq $env{'user.name'} &&
2014: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
1.212 albertel 2015: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1.68 albertel 2016: return $names{'screenname'};
1.62 www 2017: }
2018:
1.212 albertel 2019:
1.62 www 2020: # ------------------------------------------------------------- Message Wrapper
2021:
2022: sub messagewrapper {
1.200 matthew 2023: my ($link,$username,$domain)=@_;
1.62 www 2024: return
1.200 matthew 2025: '<a href="/adm/email?compose=individual&'.
2026: 'recname='.$username.'&recdom='.$domain.'" '.
2027: 'title="'.&mt('Send message').'">'.$link.'</a>';
1.74 www 2028: }
2029: # --------------------------------------------------------------- Notes Wrapper
2030:
2031: sub noteswrapper {
2032: my ($link,$un,$do)=@_;
2033: return
2034: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1.62 www 2035: }
2036: # ------------------------------------------------------------- Aboutme Wrapper
2037:
2038: sub aboutmewrapper {
1.166 www 2039: my ($link,$username,$domain,$target)=@_;
1.205 www 2040: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1.200 matthew 2041: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1.62 www 2042: }
2043:
2044: # ------------------------------------------------------------ Syllabus Wrapper
2045:
2046:
2047: sub syllabuswrapper {
1.109 matthew 2048: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
2049: if ($fontcolor) {
2050: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
2051: }
1.208 matthew 2052: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1.61 www 2053: }
1.14 harris41 2054:
1.208 matthew 2055: sub track_student_link {
1.268 albertel 2056: my ($linktext,$sname,$sdom,$target,$start) = @_;
2057: my $link ="/adm/trackstudent?";
1.208 matthew 2058: my $title = 'View recent activity';
2059: if (defined($sname) && $sname !~ /^\s*$/ &&
2060: defined($sdom) && $sdom !~ /^\s*$/) {
1.268 albertel 2061: $link .= "selected_student=$sname:$sdom";
1.208 matthew 2062: $title .= ' of this student';
1.268 albertel 2063: }
1.208 matthew 2064: if (defined($target) && $target !~ /^\s*$/) {
2065: $target = qq{target="$target"};
2066: } else {
2067: $target = '';
2068: }
1.268 albertel 2069: if ($start) { $link.='&start='.$start; }
1.208 matthew 2070: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2071: }
2072:
1.112 bowersj2 2073: =pod
2074:
2075: =back
2076:
2077: =head1 Access .tab File Data
2078:
2079: =over 4
2080:
2081: =item * languageids()
2082:
2083: returns list of all language ids
2084:
2085: =cut
2086:
1.14 harris41 2087: sub languageids {
1.16 harris41 2088: return sort(keys(%language));
1.14 harris41 2089: }
2090:
1.112 bowersj2 2091: =pod
2092:
2093: =item * languagedescription()
2094:
2095: returns description of a specified language id
2096:
2097: =cut
2098:
1.14 harris41 2099: sub languagedescription {
1.125 www 2100: my $code=shift;
2101: return ($supported_language{$code}?'* ':'').
2102: $language{$code}.
1.126 www 2103: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1.145 www 2104: }
2105:
2106: sub plainlanguagedescription {
2107: my $code=shift;
2108: return $language{$code};
2109: }
2110:
2111: sub supportedlanguagecode {
2112: my $code=shift;
2113: return $supported_language{$code};
1.97 www 2114: }
2115:
1.112 bowersj2 2116: =pod
2117:
2118: =item * copyrightids()
2119:
2120: returns list of all copyrights
2121:
2122: =cut
2123:
2124: sub copyrightids {
2125: return sort(keys(%cprtag));
2126: }
2127:
2128: =pod
2129:
2130: =item * copyrightdescription()
2131:
2132: returns description of a specified copyright id
2133:
2134: =cut
2135:
2136: sub copyrightdescription {
1.166 www 2137: return &mt($cprtag{shift(@_)});
1.112 bowersj2 2138: }
1.197 matthew 2139:
2140: =pod
2141:
1.192 taceyjo1 2142: =item * source_copyrightids()
2143:
2144: returns list of all source copyrights
2145:
2146: =cut
2147:
2148: sub source_copyrightids {
2149: return sort(keys(%scprtag));
2150: }
2151:
2152: =pod
2153:
2154: =item * source_copyrightdescription()
2155:
2156: returns description of a specified source copyright id
2157:
2158: =cut
2159:
2160: sub source_copyrightdescription {
2161: return &mt($scprtag{shift(@_)});
2162: }
1.112 bowersj2 2163:
2164: =pod
2165:
2166: =item * filecategories()
2167:
2168: returns list of all file categories
2169:
2170: =cut
2171:
2172: sub filecategories {
2173: return sort(keys(%category_extensions));
2174: }
2175:
2176: =pod
2177:
2178: =item * filecategorytypes()
2179:
2180: returns list of file types belonging to a given file
2181: category
2182:
2183: =cut
2184:
2185: sub filecategorytypes {
2186: return @{$category_extensions{lc($_[0])}};
2187: }
2188:
2189: =pod
2190:
2191: =item * fileembstyle()
2192:
2193: returns embedding style for a specified file type
2194:
2195: =cut
2196:
2197: sub fileembstyle {
2198: return $fe{lc(shift(@_))};
1.169 www 2199: }
2200:
2201:
2202: sub filecategoryselect {
2203: my ($name,$value)=@_;
1.189 matthew 2204: return &select_form($value,$name,
1.169 www 2205: '' => &mt('Any category'),
2206: map { $_,$_ } sort(keys(%category_extensions)));
1.112 bowersj2 2207: }
2208:
2209: =pod
2210:
2211: =item * filedescription()
2212:
2213: returns description for a specified file type
2214:
2215: =cut
2216:
2217: sub filedescription {
1.188 matthew 2218: my $file_description = $fd{lc(shift())};
2219: $file_description =~ s:([\[\]]):~$1:g;
2220: return &mt($file_description);
1.112 bowersj2 2221: }
2222:
2223: =pod
2224:
2225: =item * filedescriptionex()
2226:
2227: returns description for a specified file type with
2228: extra formatting
2229:
2230: =cut
2231:
2232: sub filedescriptionex {
2233: my $ex=shift;
1.188 matthew 2234: my $file_description = $fd{lc($ex)};
2235: $file_description =~ s:([\[\]]):~$1:g;
2236: return '.'.$ex.' '.&mt($file_description);
1.112 bowersj2 2237: }
2238:
2239: # End of .tab access
2240: =pod
2241:
2242: =back
2243:
2244: =cut
2245:
2246: # ------------------------------------------------------------------ File Types
2247: sub fileextensions {
2248: return sort(keys(%fe));
2249: }
2250:
1.97 www 2251: # ----------------------------------------------------------- Display Languages
2252: # returns a hash with all desired display languages
2253: #
2254:
2255: sub display_languages {
2256: my %languages=();
1.118 www 2257: foreach (&preferred_languages()) {
2258: $languages{$_}=1;
1.97 www 2259: }
2260: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
1.258 albertel 2261: if ($env{'form.displaylanguage'}) {
2262: foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
1.97 www 2263: $languages{$_}=1;
2264: }
2265: }
2266: return %languages;
1.14 harris41 2267: }
2268:
1.117 www 2269: sub preferred_languages {
2270: my @languages=();
1.258 albertel 2271: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
1.117 www 2272: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
1.258 albertel 2273: $env{'course.'.$env{'request.course.id'}.'.languages'}));
1.177 www 2274: }
1.258 albertel 2275: if ($env{'environment.languages'}) {
2276: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
1.118 www 2277: }
1.162 www 2278: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2279: if ($browser) {
2280: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2281: }
1.258 albertel 2282: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
1.118 www 2283: @languages=(@languages,
1.258 albertel 2284: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
1.118 www 2285: }
1.258 albertel 2286: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
1.118 www 2287: @languages=(@languages,
1.258 albertel 2288: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
1.118 www 2289: }
2290: if ($Apache::lonnet::domain_lang_def{
2291: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2292: @languages=(@languages,
2293: $Apache::lonnet::domain_lang_def{
2294: $Apache::lonnet::perlvar{'lonDefDomain'}});
2295: }
2296: # turn "en-ca" into "en-ca,en"
2297: my @genlanguages;
2298: foreach (@languages) {
2299: unless ($_=~/\w/) { next; }
2300: push (@genlanguages,$_);
2301: if ($_=~/(\-|\_)/) {
2302: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2303: }
2304: }
2305: return @genlanguages;
1.117 www 2306: }
2307:
1.112 bowersj2 2308: ###############################################################
2309: ## Student Answer Attempts ##
2310: ###############################################################
2311:
2312: =pod
2313:
2314: =head1 Alternate Problem Views
2315:
2316: =over 4
2317:
2318: =item * get_previous_attempt($symb, $username, $domain, $course,
2319: $getattempt, $regexp, $gradesub)
2320:
2321: Return string with previous attempt on problem. Arguments:
2322:
2323: =over 4
2324:
2325: =item * $symb: Problem, including path
2326:
2327: =item * $username: username of the desired student
2328:
2329: =item * $domain: domain of the desired student
1.14 harris41 2330:
1.112 bowersj2 2331: =item * $course: Course ID
1.14 harris41 2332:
1.112 bowersj2 2333: =item * $getattempt: Leave blank for all attempts, otherwise put
2334: something
1.14 harris41 2335:
1.112 bowersj2 2336: =item * $regexp: if string matches this regexp, the string will be
2337: sent to $gradesub
1.14 harris41 2338:
1.112 bowersj2 2339: =item * $gradesub: routine that processes the string if it matches $regexp
1.14 harris41 2340:
1.112 bowersj2 2341: =back
1.14 harris41 2342:
1.112 bowersj2 2343: The output string is a table containing all desired attempts, if any.
1.16 harris41 2344:
1.112 bowersj2 2345: =cut
1.1 albertel 2346:
2347: sub get_previous_attempt {
1.43 ng 2348: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
1.1 albertel 2349: my $prevattempts='';
1.43 ng 2350: no strict 'refs';
1.1 albertel 2351: if ($symb) {
1.3 albertel 2352: my (%returnhash)=
2353: &Apache::lonnet::restore($symb,$course,$domain,$username);
1.1 albertel 2354: if ($returnhash{'version'}) {
2355: my %lasthash=();
2356: my $version;
2357: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.19 harris41 2358: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
1.1 albertel 2359: $lasthash{$_}=$returnhash{$version.':'.$_};
1.19 harris41 2360: }
1.1 albertel 2361: }
1.43 ng 2362: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
1.40 ng 2363: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
1.16 harris41 2364: foreach (sort(keys %lasthash)) {
1.31 albertel 2365: my ($ign,@parts) = split(/\./,$_);
1.41 ng 2366: if ($#parts > 0) {
1.31 albertel 2367: my $data=$parts[-1];
2368: pop(@parts);
1.40 ng 2369: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
1.31 albertel 2370: } else {
1.41 ng 2371: if ($#parts == 0) {
2372: $prevattempts.='<th>'.$parts[0].'</th>';
2373: } else {
2374: $prevattempts.='<th>'.$ign.'</th>';
2375: }
1.31 albertel 2376: }
1.16 harris41 2377: }
1.40 ng 2378: if ($getattempt eq '') {
2379: for ($version=1;$version<=$returnhash{'version'};$version++) {
2380: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2381: foreach (sort(keys %lasthash)) {
2382: my $value;
2383: if ($_ =~ /timestamp/) {
2384: $value=scalar(localtime($returnhash{$version.':'.$_}));
2385: } else {
2386: $value=$returnhash{$version.':'.$_};
2387: }
1.142 albertel 2388: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
1.40 ng 2389: }
2390: }
1.1 albertel 2391: }
1.40 ng 2392: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
1.16 harris41 2393: foreach (sort(keys %lasthash)) {
1.5 albertel 2394: my $value;
2395: if ($_ =~ /timestamp/) {
2396: $value=scalar(localtime($lasthash{$_}));
2397: } else {
2398: $value=$lasthash{$_};
2399: }
1.142 albertel 2400: $value=&Apache::lonnet::unescape($value);
1.49 ng 2401: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
1.40 ng 2402: $prevattempts.='<td>'.$value.' </td>';
1.16 harris41 2403: }
1.40 ng 2404: $prevattempts.='</tr></table></td></tr></table>';
1.1 albertel 2405: } else {
2406: $prevattempts='Nothing submitted - no attempts.';
2407: }
2408: } else {
2409: $prevattempts='No data.';
2410: }
1.10 albertel 2411: }
2412:
1.107 albertel 2413: sub relative_to_absolute {
2414: my ($url,$output)=@_;
2415: my $parser=HTML::TokeParser->new(\$output);
2416: my $token;
2417: my $thisdir=$url;
2418: my @rlinks=();
2419: while ($token=$parser->get_token) {
2420: if ($token->[0] eq 'S') {
2421: if ($token->[1] eq 'a') {
2422: if ($token->[2]->{'href'}) {
2423: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2424: }
2425: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2426: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2427: } elsif ($token->[1] eq 'base') {
2428: $thisdir=$token->[2]->{'href'};
2429: }
2430: }
2431: }
2432: $thisdir=~s-/[^/]*$--;
2433: foreach (@rlinks) {
2434: unless (($_=~/^http:\/\//i) ||
2435: ($_=~/^\//) ||
2436: ($_=~/^javascript:/i) ||
2437: ($_=~/^mailto:/i) ||
2438: ($_=~/^\#/)) {
2439: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2440: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2441: }
2442: }
2443: # -------------------------------------------------- Deal with Applet codebases
2444: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2445: return $output;
2446: }
2447:
1.112 bowersj2 2448: =pod
2449:
2450: =item * get_student_view
2451:
2452: show a snapshot of what student was looking at
2453:
2454: =cut
2455:
1.10 albertel 2456: sub get_student_view {
1.186 albertel 2457: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
1.114 www 2458: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
1.186 albertel 2459: my (%form);
1.10 albertel 2460: my @elements=('symb','courseid','domain','username');
2461: foreach my $element (@elements) {
1.186 albertel 2462: $form{'grade_'.$element}=eval '$'.$element #'
1.10 albertel 2463: }
1.186 albertel 2464: if (defined($moreenv)) {
2465: %form=(%form,%{$moreenv});
2466: }
1.236 albertel 2467: if (defined($target)) { $form{'grade_target'} = $target; }
1.107 albertel 2468: $feedurl=&Apache::lonnet::clutter($feedurl);
1.186 albertel 2469: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
1.11 albertel 2470: $userview=~s/\<body[^\>]*\>//gi;
2471: $userview=~s/\<\/body\>//gi;
2472: $userview=~s/\<html\>//gi;
2473: $userview=~s/\<\/html\>//gi;
2474: $userview=~s/\<head\>//gi;
2475: $userview=~s/\<\/head\>//gi;
2476: $userview=~s/action\s*\=/would_be_action\=/gi;
1.107 albertel 2477: $userview=&relative_to_absolute($feedurl,$userview);
1.11 albertel 2478: return $userview;
2479: }
2480:
1.112 bowersj2 2481: =pod
2482:
2483: =item * get_student_answers()
2484:
2485: show a snapshot of how student was answering problem
2486:
2487: =cut
2488:
1.11 albertel 2489: sub get_student_answers {
1.100 sakharuk 2490: my ($symb,$username,$domain,$courseid,%form) = @_;
1.114 www 2491: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
1.186 albertel 2492: my (%moreenv);
1.11 albertel 2493: my @elements=('symb','courseid','domain','username');
2494: foreach my $element (@elements) {
1.186 albertel 2495: $moreenv{'grade_'.$element}=eval '$'.$element #'
1.10 albertel 2496: }
1.186 albertel 2497: $moreenv{'grade_target'}='answer';
2498: %moreenv=(%form,%moreenv);
2499: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
1.10 albertel 2500: return $userview;
1.1 albertel 2501: }
1.116 albertel 2502:
2503: =pod
2504:
2505: =item * &submlink()
2506:
1.242 albertel 2507: Inputs: $text $uname $udom $symb $target
1.116 albertel 2508:
2509: Returns: A link to grades.pm such as to see the SUBM view of a student
2510:
2511: =cut
2512:
2513: ###############################################
2514: sub submlink {
1.242 albertel 2515: my ($text,$uname,$udom,$symb,$target)=@_;
1.116 albertel 2516: if (!($uname && $udom)) {
2517: (my $cursymb, my $courseid,$udom,$uname)=
2518: &Apache::lonxml::whichuser($symb);
2519: if (!$symb) { $symb=$cursymb; }
2520: }
1.254 matthew 2521: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
1.242 albertel 2522: $symb=&Apache::lonnet::escape($symb);
2523: if ($target) { $target="target=\"$target\""; }
2524: return '<a href="/adm/grades?&command=submission&'.
2525: 'symb='.$symb.'&student='.$uname.
2526: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2527: }
2528: ##############################################
2529:
2530: =pod
2531:
2532: =item * &pgrdlink()
2533:
2534: Inputs: $text $uname $udom $symb $target
2535:
2536: Returns: A link to grades.pm such as to see the PGRD view of a student
2537:
2538: =cut
2539:
2540: ###############################################
2541: sub pgrdlink {
2542: my $link=&submlink(@_);
2543: $link=~s/(&command=submission)/$1&showgrading=yes/;
2544: return $link;
2545: }
2546: ##############################################
2547:
2548: =pod
2549:
2550: =item * &pprmlink()
2551:
2552: Inputs: $text $uname $udom $symb $target
2553:
2554: Returns: A link to parmset.pm such as to see the PPRM view of a
1.283 albertel 2555: student and a specific resource
1.242 albertel 2556:
2557: =cut
2558:
2559: ###############################################
2560: sub pprmlink {
2561: my ($text,$uname,$udom,$symb,$target)=@_;
2562: if (!($uname && $udom)) {
2563: (my $cursymb, my $courseid,$udom,$uname)=
2564: &Apache::lonxml::whichuser($symb);
2565: if (!$symb) { $symb=$cursymb; }
2566: }
1.254 matthew 2567: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
1.242 albertel 2568: $symb=&Apache::lonnet::escape($symb);
2569: if ($target) { $target="target=\"$target\""; }
2570: return '<a href="/adm/parmset?&command=set&'.
2571: 'symb='.$symb.'&uname='.$uname.
2572: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
1.116 albertel 2573: }
2574: ##############################################
1.37 matthew 2575:
1.112 bowersj2 2576: =pod
2577:
2578: =back
2579:
2580: =cut
2581:
1.37 matthew 2582: ###############################################
1.51 www 2583:
2584:
2585: sub timehash {
2586: my @ltime=localtime(shift);
2587: return ( 'seconds' => $ltime[0],
2588: 'minutes' => $ltime[1],
2589: 'hours' => $ltime[2],
2590: 'day' => $ltime[3],
2591: 'month' => $ltime[4]+1,
2592: 'year' => $ltime[5]+1900,
2593: 'weekday' => $ltime[6],
2594: 'dayyear' => $ltime[7]+1,
2595: 'dlsav' => $ltime[8] );
2596: }
2597:
2598: sub maketime {
2599: my %th=@_;
2600: return POSIX::mktime(
2601: ($th{'seconds'},$th{'minutes'},$th{'hours'},
1.210 www 2602: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
1.70 www 2603: }
2604:
2605: #########################################
1.51 www 2606:
2607: sub findallcourses {
2608: my %courses=();
2609: my $now=time;
1.258 albertel 2610: foreach (keys %env) {
1.51 www 2611: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
1.258 albertel 2612: my ($starttime,$endtime)=$env{$_};
1.51 www 2613: my $active=1;
2614: if ($starttime) {
2615: if ($now<$starttime) { $active=0; }
2616: }
2617: if ($endtime) {
2618: if ($now>$endtime) { $active=0; }
2619: }
2620: if ($active) { $courses{$1.'_'.$2}=1; }
2621: }
2622: }
2623: return keys %courses;
2624: }
1.37 matthew 2625:
1.54 www 2626: ###############################################
1.60 matthew 2627: ###############################################
2628:
2629: =pod
2630:
1.112 bowersj2 2631: =head1 Domain Template Functions
2632:
2633: =over 4
2634:
2635: =item * &determinedomain()
1.60 matthew 2636:
2637: Inputs: $domain (usually will be undef)
2638:
1.63 www 2639: Returns: Determines which domain should be used for designs
1.60 matthew 2640:
2641: =cut
1.54 www 2642:
1.60 matthew 2643: ###############################################
1.63 www 2644: sub determinedomain {
2645: my $domain=shift;
2646: if (! $domain) {
1.60 matthew 2647: # Determine domain if we have not been given one
2648: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
1.258 albertel 2649: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2650: if ($env{'request.role.domain'}) {
2651: $domain=$env{'request.role.domain'};
1.60 matthew 2652: }
2653: }
1.63 www 2654: return $domain;
2655: }
2656: ###############################################
2657: =pod
2658:
1.112 bowersj2 2659: =item * &domainlogo()
1.63 www 2660:
2661: Inputs: $domain (usually will be undef)
2662:
2663: Returns: A link to a domain logo, if the domain logo exists.
2664: If the domain logo does not exist, a description of the domain.
2665:
2666: =cut
1.112 bowersj2 2667:
1.63 www 2668: ###############################################
2669: sub domainlogo {
2670: my $domain = &determinedomain(shift);
2671: # See if there is a logo
1.59 www 2672: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
1.215 albertel 2673: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2674: return '<img src="'.$logo.'" alt="'.$domain.'" />';
1.60 matthew 2675: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2676: return $Apache::lonnet::domaindescription{$domain};
1.59 www 2677: } else {
1.60 matthew 2678: return '';
1.59 www 2679: }
2680: }
1.63 www 2681: ##############################################
2682:
2683: =pod
2684:
1.112 bowersj2 2685: =item * &designparm()
1.63 www 2686:
2687: Inputs: $which parameter; $domain (usually will be undef)
2688:
2689: Returns: value of designparamter $which
2690:
2691: =cut
1.112 bowersj2 2692:
1.63 www 2693: ##############################################
2694: sub designparm {
2695: my ($which,$domain)=@_;
1.258 albertel 2696: if ($env{'browser.blackwhite'} eq 'on') {
1.110 www 2697: if ($which=~/\.(font|alink|vlink|link)$/) {
2698: return '#000000';
2699: }
2700: if ($which=~/\.(pgbg|sidebg)$/) {
2701: return '#FFFFFF';
2702: }
2703: if ($which=~/\.tabbg$/) {
2704: return '#CCCCCC';
2705: }
2706: }
1.258 albertel 2707: if ($env{'environment.color.'.$which}) {
2708: return $env{'environment.color.'.$which};
1.96 www 2709: }
1.63 www 2710: $domain=&determinedomain($domain);
2711: if ($designhash{$domain.'.'.$which}) {
2712: return $designhash{$domain.'.'.$which};
2713: } else {
2714: return $designhash{'default.'.$which};
2715: }
2716: }
1.59 www 2717:
1.60 matthew 2718: ###############################################
2719: ###############################################
2720:
2721: =pod
2722:
1.112 bowersj2 2723: =back
2724:
2725: =head1 HTTP Helpers
2726:
2727: =over 4
2728:
2729: =item * &bodytag()
1.60 matthew 2730:
2731: Returns a uniform header for LON-CAPA web pages.
2732:
2733: Inputs:
2734:
1.112 bowersj2 2735: =over 4
2736:
2737: =item * $title, A title to be displayed on the page.
2738:
2739: =item * $function, the current role (can be undef).
2740:
2741: =item * $addentries, extra parameters for the <body> tag.
2742:
2743: =item * $bodyonly, if defined, only return the <body> tag.
2744:
2745: =item * $domain, if defined, force a given domain.
2746:
2747: =item * $forcereg, if page should register as content page (relevant for
1.86 www 2748: text interface only)
1.60 matthew 2749:
1.326 albertel 2750: =item * $customtitle, alternate text to use instead of $title
2751: in the title box that appears, this text
2752: is not auto translated like the $title is
1.309 albertel 2753:
2754: =item * $notopbar, if true, keep the 'what is this' info but remove the
2755: navigational links
1.317 albertel 2756:
1.338 albertel 2757: =item * $bgcolor, used to override the bgcolor on a webpage to a specific value
2758:
2759: =item * $notitle, if true keep the nav controls, but remove the title bar
2760:
1.317 albertel 2761:
1.112 bowersj2 2762: =back
2763:
1.60 matthew 2764: Returns: A uniform header for LON-CAPA web pages.
2765: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2766: If $bodyonly is undef or zero, an html string containing a <body> tag and
2767: other decorations will be returned.
2768:
2769: =cut
2770:
1.54 www 2771: sub bodytag {
1.309 albertel 2772: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,
1.338 albertel 2773: $notopbar,$bgcolor,$notitle)=@_;
1.339 albertel 2774:
1.117 www 2775: $title=&mt($title);
1.339 albertel 2776:
1.183 matthew 2777: $function = &get_users_function() if (!$function);
1.339 albertel 2778: my $img = &designparm($function.'.img',$domain);
2779: my $tabbg = &designparm($function.'.tabbg',$domain);
2780: my $font = &designparm($function.'.font',$domain);
2781: my $sidebg = &designparm($function.'.sidebg',$domain);
2782: my $pgbg = $bgcolor || &designparm($function.'.pgbg',$domain);
2783:
2784: my %design = ( 'style' => 'margin-top: 0px',
2785: 'bgcolor' => $pgbg,
2786: 'text' => $font,
2787: 'alink' => &designparm($function.'.alink',$domain),
2788: 'vlink' => &designparm($function.'.vlink',$domain),
2789: 'link' => &designparm($function.'.link',$domain),);
2790: @$addentries{keys(%design)} = @design{keys(%design)};
2791:
1.63 www 2792: # role and realm
1.55 www 2793: my ($role,$realm)
1.258 albertel 2794: =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
1.55 www 2795: # realm
1.258 albertel 2796: if ($env{'request.course.id'}) {
1.55 www 2797: $realm=
1.258 albertel 2798: $env{'course.'.$env{'request.course.id'}.'.description'};
1.54 www 2799: }
1.55 www 2800: unless ($realm) { $realm=' '; }
2801: # Set messages
1.60 matthew 2802: my $messages=&domainlogo($domain);
1.101 www 2803: # Port for miniserver
1.83 albertel 2804: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2805: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1.330 albertel 2806:
2807: my $extra_body_attr = &make_attr_string($forcereg,$addentries);
1.329 albertel 2808:
1.101 www 2809: # construct main body tag
1.60 matthew 2810: my $bodytag = <<END;
1.339 albertel 2811: <body $extra_body_attr>
1.60 matthew 2812: END
1.330 albertel 2813:
2814: $bodytag .= &Apache::lontexconvert::init_math_support();
1.252 albertel 2815:
1.94 www 2816: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
1.150 matthew 2817: $lonhttpdPort.$img.'" alt="'.$function.'" />';
1.332 albertel 2818: if ($bodyonly
2819: || ($env{'request.state'} eq 'construct'
2820: && $env{'environment.remote'} ne 'off' )) {
1.60 matthew 2821: return $bodytag;
1.258 albertel 2822: } elsif ($env{'browser.interface'} eq 'textual') {
1.95 www 2823: # Accessibility
1.224 raeburn 2824:
1.337 albertel 2825: $bodytag.=&Apache::lonmenu::menubuttons($forcereg,$forcereg);
1.338 albertel 2826: if (!$notitle) {
1.337 albertel 2827: $bodytag.='<h1>LON-CAPA: '.$title.'</h1>';
2828: }
2829: return $bodytag;
1.258 albertel 2830: } elsif ($env{'environment.remote'} eq 'off') {
1.95 www 2831: # No Remote
1.206 albertel 2832: my $roleinfo=(<<ENDROLE);
2833: <td bgcolor="$tabbg" align="right">
2834: <font size="2" face="Arial, Helvetica, sans-serif">
1.258 albertel 2835: $env{'environment.firstname'}
2836: $env{'environment.middlename'}
2837: $env{'environment.lastname'}
2838: $env{'environment.generation'}
1.206 albertel 2839: </font>
2840: <br />
2841: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2842: <br />
2843: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2844: </td>
2845: ENDROLE
1.224 raeburn 2846: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
1.229 albertel 2847: $font.'"><b>'.$title.'</b></font>';
1.224 raeburn 2848: if ($customtitle) {
2849: $titleinfo = $customtitle;
1.235 raeburn 2850: }
2851:
1.258 albertel 2852: if ($env{'request.state'} eq 'construct') {
1.229 albertel 2853: my ($uname,$thisdisfn)=
1.258 albertel 2854: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
1.229 albertel 2855: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2856: $formaction=~s/\/+/\//g;
1.237 raeburn 2857: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2858: my $parentpath = '';
1.241 raeburn 2859: my $lastitem = '';
2860: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
1.235 raeburn 2861: $parentpath = $1;
1.241 raeburn 2862: $lastitem = $2;
2863: } else {
2864: $lastitem = $thisdisfn;
1.235 raeburn 2865: }
2866: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2867: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2868: '<form name="dirs" method="post" action="'.$formaction
2869: .'" target="_top"><tt><b>'
1.241 raeburn 2870: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
1.235 raeburn 2871: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2872: .'</form>'
2873: .&Apache::lonmenu::constspaceform();
1.229 albertel 2874:
1.235 raeburn 2875: }
2876: $forcereg=1;
2877: }
1.337 albertel 2878: my $titletable;
1.338 albertel 2879: if (!$notitle) {
1.337 albertel 2880: $titletable =
2881: '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
1.235 raeburn 2882: 'cellspacing="3" cellpadding="3">'.
1.270 albertel 2883: '<tr><td bgcolor="'.$tabbg.'">'.
1.235 raeburn 2884: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
1.337 albertel 2885: }
2886: if ($env{'request.state'} eq 'construct') {
1.272 raeburn 2887: if ($notopbar) {
2888: $bodytag .= $titletable;
2889: } else {
1.337 albertel 2890: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,$forcereg,
2891: $titletable);
1.272 raeburn 2892: }
1.235 raeburn 2893: } else {
1.272 raeburn 2894: if ($notopbar) {
2895: $bodytag .= $titletable;
2896: } else {
1.336 albertel 2897: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,$forcereg).
1.235 raeburn 2898: $titletable;
1.272 raeburn 2899: }
1.235 raeburn 2900: }
2901: return $bodytag;
1.94 www 2902: }
1.95 www 2903:
1.93 www 2904: #
1.95 www 2905: # Top frame rendering, Remote is up
1.93 www 2906: #
1.224 raeburn 2907: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2908: if ($customtitle) {
2909: $titleinfo = $customtitle;
2910: }
1.245 matthew 2911: #
2912: # Extra info if you are the DC
2913: my $dc_info = '';
1.258 albertel 2914: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2915: $env{'course.'.$env{'request.course.id'}.
1.245 matthew 2916: '.domain'}.'/'})) {
1.258 albertel 2917: my $cid = $env{'request.course.id'};
2918: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
1.245 matthew 2919: $dc_info = '('.$dc_info.')';
2920: }
1.305 www 2921: # Explicit link to get inline menu
2922: my $menu='<br /><font size="2" face="Arial, Helvetica, sans-serif"> <a href="/adm/remote?action=collapse">'.&mt('Switch to Inline Menu Mode').'</a></font>';
1.245 matthew 2923: #
1.338 albertel 2924: if ($notitle) {
1.337 albertel 2925: return $bodytag;
2926: }
1.94 www 2927: return(<<ENDBODY);
1.60 matthew 2928: $bodytag
1.296 albertel 2929: <table width="100%" cellspacing="0" border="0" cellpadding="0">
1.95 www 2930: <tr><td bgcolor="$sidebg">
1.94 www 2931: $upperleft</td>
1.95 www 2932: <td bgcolor="$sidebg" align="right">$messages </td>
1.55 www 2933: </tr>
1.54 www 2934: <tr>
1.55 www 2935: <td rowspan="3" bgcolor="$tabbg">
1.305 www 2936: $titleinfo $dc_info $menu
1.257 matthew 2937: </td><td bgcolor="$tabbg" align="right">
1.146 www 2938: <font size="2" face="Arial, Helvetica, sans-serif">
1.258 albertel 2939: $env{'environment.firstname'}
2940: $env{'environment.middlename'}
2941: $env{'environment.lastname'}
2942: $env{'environment.generation'}
1.55 www 2943: </font>
1.54 www 2944: </td>
2945: </tr>
2946: <tr><td bgcolor="$tabbg" align="right">
1.146 www 2947: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
1.54 www 2948: </td></tr>
1.55 www 2949: <tr>
1.148 www 2950: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
1.202 albertel 2951: </table><br />
1.54 www 2952: ENDBODY
1.182 matthew 2953: }
2954:
1.330 albertel 2955: sub make_attr_string {
2956: my ($register,$attr_ref) = @_;
2957:
2958: if ($attr_ref && !ref($attr_ref)) {
2959: die("addentries Must be a hash ref ".
2960: join(':',caller(1))." ".
2961: join(':',caller(0))." ");
2962: }
2963:
2964: if ($register) {
1.339 albertel 2965: my ($on_load,$on_unload);
2966: foreach my $key (keys(%{$attr_ref})) {
2967: if (lc($key) eq 'onload') {
2968: $on_load.=$attr_ref->{$key}.';';
2969: delete($attr_ref->{$key});
2970:
2971: } elsif (lc($key) eq 'onunload') {
2972: $on_unload.=$attr_ref->{$key}.';';
2973: delete($attr_ref->{$key});
2974: }
2975: }
2976: $attr_ref->{'onload'} =
2977: &Apache::lonmenu::loadevents(). $on_load;
2978: $attr_ref->{'onunload'}=
2979: &Apache::lonmenu::unloadevents().$on_unload;
2980: }
2981:
2982: # Accessibility font enhance
2983: if ($env{'browser.fontenhance'} eq 'on') {
2984: my $style;
2985: foreach my $key (keys(%{$attr_ref})) {
2986: if (lc($key) eq 'style') {
2987: $style.=$attr_ref->{$key}.';';
2988: delete($attr_ref->{$key});
2989: }
2990: }
2991: $attr_ref->{'style'}=$style.'; font-size: x-large;';
1.330 albertel 2992: }
1.339 albertel 2993:
2994: if ($env{'browser.blackwhite'} eq 'on') {
2995: delete($attr_ref->{'font'});
2996: delete($attr_ref->{'link'});
2997: delete($attr_ref->{'alink'});
2998: delete($attr_ref->{'vlink'});
2999: delete($attr_ref->{'bgcolor'});
3000: delete($attr_ref->{'background'});
3001: }
3002:
1.330 albertel 3003: my $attr_string;
3004: foreach my $attr (keys(%$attr_ref)) {
3005: $attr_string .= " $attr=\"".$attr_ref->{$attr}.'" ';
3006: }
3007: return $attr_string;
3008: }
3009:
3010:
1.182 matthew 3011: ###############################################
1.251 albertel 3012: ###############################################
3013:
3014: =pod
3015:
3016: =back
3017:
1.306 albertel 3018: =head1 HTML Helpers
1.251 albertel 3019:
3020: =over 4
3021:
3022: =item * &endbodytag()
3023:
3024: Returns a uniform footer for LON-CAPA web pages.
3025:
1.306 albertel 3026: Inputs: none
1.251 albertel 3027:
3028: =back
3029:
3030: =cut
3031:
3032: sub endbodytag {
3033: my $endbodytag='</body>';
1.269 albertel 3034: $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
1.315 albertel 3035: if ( exists( $env{'internal.head.redirect'} ) ) {
3036: $endbodytag=
3037: "<br /><a href=\"$env{'internal.head.redirect'}\">".
3038: &mt('Continue').'</a>'.
3039: $endbodytag;
3040: }
1.251 albertel 3041: return $endbodytag;
3042: }
3043:
1.343 albertel 3044: sub standard_css {
1.345 ! albertel 3045: my ($function,$domain,$bgcolor) = @_;
! 3046: my $function = &get_users_function() if (!$function);
! 3047: my $img = &designparm($function.'.img',$domain);
! 3048: my $tabbg = &designparm($function.'.tabbg',$domain);
! 3049: my $font = &designparm($function.'.font',$domain);
! 3050: my $sidebg = &designparm($function.'.sidebg',$domain);
! 3051: my $pgbg = $bgcolor || &designparm($function.'.pgbg',$domain);
! 3052:
! 3053: my $alink = &designparm($function.'.alink',$domain);
! 3054: my $vlink = &designparm($function.'.vlink',$domain);
! 3055: my $link = &designparm($function.'.link',$domain);
! 3056: my $sans = 'Arial,Helvetica,sans-serif';
1.343 albertel 3057: return <<END;
3058: <style type="text/css">
1.345 ! albertel 3059: h1, h2, h3, th { font-family: $sans }
1.343 albertel 3060: a:focus { color: red; background: yellow }
3061: table.thinborder { border-collapse: collapse; }
3062: table.thinborder tr th, table.thinborder tr td { border-style: solid; border-width: 1px}
3063: form, .inline { display: inline; }
3064: .center { text-align: center; }
3065: .filename {font-family: monospace;}
1.345 ! albertel 3066: table#LC_top_nav {
! 3067: width: 100%;
! 3068: background: $pgbg;
! 3069: border: 0px;
! 3070: border-spacing: 1px;
! 3071: padding: 0px;
! 3072: margin: 0px;
! 3073: border-collapse: separate;
! 3074: }
! 3075: table#LC_top_nav td {
! 3076: background: $tabbg;
! 3077: }
! 3078: table#LC_top_nav td a, div#LC_top_nav a {
! 3079: color: $font;
! 3080: font-family: $sans;
! 3081: }
1.343 albertel 3082: </style>
3083: END
3084: }
3085:
1.306 albertel 3086: =pod
3087:
3088: =over 4
3089:
3090: =item * &headtag()
3091:
3092: Returns a uniform footer for LON-CAPA web pages.
3093:
1.307 albertel 3094: Inputs: $title - optional title for the head
3095: $head_extra - optional extra HTML to put inside the <head>
1.315 albertel 3096: $args - optional arguments
1.319 albertel 3097: force_register - if is true call registerurl so the remote is
3098: informed
1.315 albertel 3099: redirect - array ref of seconds before redirect occurs
3100: url to redirect to
3101: (side effect of setting
3102: $env{'internal.head.redirect'} to the url
3103: redirected too)
1.306 albertel 3104: =back
3105:
3106: =cut
3107:
3108: sub headtag {
1.313 albertel 3109: my ($title,$head_extra,$args) = @_;
1.306 albertel 3110:
1.308 albertel 3111: my $result =
3112: '<head>'.
1.343 albertel 3113: &standard_css().
1.340 albertel 3114: &font_settings().
1.308 albertel 3115: &Apache::lonhtmlcommon::htmlareaheaders();
1.319 albertel 3116:
3117: if ($args->{'force_register'}) {
3118: $result .= &Apache::lonmenu::registerurl(1);
3119: }
3120:
1.314 albertel 3121: if (ref($args->{'redirect'})) {
3122: my ($time,$url) = @{$args->{'redirect'}};
1.315 albertel 3123: $url = &Apache::lonenc::check_encrypt($url);
3124: $env{'internal.head.redirect'} = $url;
1.313 albertel 3125: $result.=<<ADDMETA
3126: <meta http-equiv="pragma" content="no-cache" />
1.344 albertel 3127: <meta http-equiv="Refresh" content="$time; url=$url" />
1.313 albertel 3128: ADDMETA
3129: }
1.306 albertel 3130: if (!defined($title)) {
3131: $title = 'The LearningOnline Network with CAPA';
3132: }
3133:
1.315 albertel 3134: $result .= '<title> LON-CAPA '.&mt($title).'</title>'.$head_extra;
1.306 albertel 3135: return $result;
3136: }
3137:
3138: =pod
3139:
3140: =over 4
3141:
1.340 albertel 3142: =item * &font_settings()
3143:
3144: Returns neccessary <meta> to set the proper encoding
3145:
3146: Inputs: none
3147:
3148: =back
3149:
3150: =cut
3151:
3152: sub font_settings {
3153: my $headerstring='';
3154: if (($env{'browser.os'} eq 'mac') && (!$env{'browser.mathml'})) {
3155: $headerstring.=
3156: '<meta Content-Type="text/html; charset=x-mac-roman" />';
3157: } elsif (!$env{'browser.mathml'} && $env{'browser.unicode'}) {
3158: $headerstring.=
3159: '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />';
3160: }
3161: return $headerstring;
3162: }
3163:
1.341 albertel 3164: =pod
3165:
3166: =over 4
3167:
3168: =item * &xml_begin()
3169:
3170: Returns the needed doctype and <html>
3171:
3172: Inputs: none
3173:
3174: =back
3175:
3176: =cut
3177:
3178: sub xml_begin {
3179: my $output='';
3180:
1.342 albertel 3181: &Apache::lonhtmlcommon::init_htmlareafields();
3182:
1.341 albertel 3183: if ($env{'browser.mathml'}) {
3184: $output='<?xml version="1.0"?>'
3185: #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
3186: # .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
3187:
3188: # .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
3189: .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
3190: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
3191: .'xmlns="http://www.w3.org/1999/xhtml">';
3192: } else {
3193: $output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html>';
3194: }
3195: return $output;
3196: }
1.340 albertel 3197:
3198: =pod
3199:
3200: =over 4
3201:
1.306 albertel 3202: =item * &endheadtag()
3203:
3204: Returns a uniform </head> for LON-CAPA web pages.
3205:
3206: Inputs: none
3207:
3208: =back
3209:
3210: =cut
3211:
3212: sub endheadtag {
3213: return '</head>';
3214: }
3215:
3216: =pod
3217:
3218: =over 4
3219:
3220: =item * &head()
3221:
3222: Returns a uniform complete <head>..</head> section for LON-CAPA web pages.
3223:
3224: Inputs: $title - optional title for the page
1.307 albertel 3225: $head_extra - optional extra HTML to put inside the <head>
1.306 albertel 3226: =back
3227:
3228: =cut
3229:
3230: sub head {
1.325 albertel 3231: my ($title,$head_extra,$args) = @_;
3232: return &headtag($title,$head_extra,$args).&endheadtag();
1.306 albertel 3233: }
3234:
3235: =pod
3236:
3237: =over 4
3238:
3239: =item * &start_page()
3240:
3241: Returns a complete <html> .. <body> section for LON-CAPA web pages.
3242:
3243: Inputs: $title - optional title for the page
3244: $head_extra - optional extra HTML to incude inside the <head>
1.315 albertel 3245: $args - additional optional args supported are:
1.317 albertel 3246: only_body -> is true will set &bodytag() onlybodytag
3247: arg on
3248: no_nav_bar -> is true will set &bodytag() notopbar arg on
3249: add_entries -> additional attributes to add to the <body>
3250: domain -> force to color decorate a page for a
3251: specific domain
3252: function -> force usage of a specific rolish color
3253: scheme
3254: redirect -> see &headtag()
3255: bgcolor -> override the default page bg color
3256: js_ready -> return a string ready for being used in
3257: a javascript writeln
1.320 albertel 3258: html_encode -> return a string ready for being used in
3259: a html attribute
1.317 albertel 3260: force_register -> if is true will turn on the &bodytag()
3261: $forcereg arg
1.326 albertel 3262: body_title -> alternate text to use instead of $title
3263: in the title box that appears, this text
3264: is not auto translated like the $title is
1.330 albertel 3265: frameset -> if true will start with a <frameset>
3266: rather than <body>
1.338 albertel 3267: no_title -> if true the title bar won't be shown
3268: skip_phases -> hash ref of
3269: head -> skip the <html><head> generation
3270: body -> skip all <body> generation
1.337 albertel 3271:
1.306 albertel 3272: =back
3273:
3274: =cut
3275:
3276: sub start_page {
1.309 albertel 3277: my ($title,$head_extra,$args) = @_;
1.318 albertel 3278: #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
1.313 albertel 3279: my %head_args;
1.319 albertel 3280: foreach my $arg ('redirect','force_register') {
3281: if (defined($args->{$arg})) {
1.324 raeburn 3282: $head_args{$arg} = $args->{$arg};
1.319 albertel 3283: }
1.313 albertel 3284: }
1.319 albertel 3285:
1.315 albertel 3286: $env{'internal.start_page'}++;
1.338 albertel 3287: my $result;
3288: if (! exists($args->{'skip_phases'}{'head'}) ) {
3289: $result.=
1.341 albertel 3290: &xml_begin().
1.338 albertel 3291: &headtag($title,$head_extra,\%head_args).&endheadtag();
3292: }
3293:
3294: if (! exists($args->{'skip_phases'}{'body'}) ) {
3295: if ($args->{'frameset'}) {
3296: my $attr_string = &make_attr_string($args->{'force_register'},
3297: $args->{'add_entries'});
3298: $result .= "\n<frameset $attr_string>\n";
3299: } else {
3300: $result .=
3301: &bodytag($title,
3302: $args->{'function'}, $args->{'add_entries'},
3303: $args->{'only_body'}, $args->{'domain'},
3304: $args->{'force_register'}, $args->{'body_title'},
3305: $args->{'no_nav_bar'}, $args->{'bgcolor'},
3306: $args->{'no_title'});
3307: }
1.330 albertel 3308: }
1.338 albertel 3309:
1.315 albertel 3310: if ($args->{'js_ready'}) {
1.317 albertel 3311: $result = &js_ready($result);
1.315 albertel 3312: }
1.320 albertel 3313: if ($args->{'html_encode'}) {
3314: $result = &html_encode($result);
3315: }
1.315 albertel 3316: return $result;
1.306 albertel 3317: }
3318:
1.330 albertel 3319:
1.306 albertel 3320: =pod
3321:
3322: =over 4
3323:
3324: =item * &head()
3325:
3326: Returns a complete </body></html> section for LON-CAPA web pages.
3327:
1.315 albertel 3328: Inputs: $args - additional optional args supported are:
3329: js_ready -> return a string ready for being used in
3330: a javascript writeln
1.320 albertel 3331: html_encode -> return a string ready for being used in
3332: a html attribute
1.330 albertel 3333: frameset -> if true will start with a <frameset>
3334: rather than <body>
1.306 albertel 3335: =back
3336:
3337: =cut
3338:
3339: sub end_page {
1.315 albertel 3340: my ($args) = @_;
1.318 albertel 3341: #&Apache::lonnet::logthis("end_page ".join(':',caller(0)));
1.315 albertel 3342: $env{'internal.end_page'}++;
1.330 albertel 3343: my $result;
1.335 albertel 3344: if ($args->{'discussion'}) {
3345: my ($target,$parser);
3346: if (ref($args->{'discussion'})) {
3347: ($target,$parser) =($args->{'discussion'}{'target'},
3348: $args->{'discussion'}{'parser'});
3349: }
3350: $result .= &Apache::lonxml::xmlend($target,$parser);
3351: }
3352:
1.330 albertel 3353: if ($args->{'frameset'}) {
3354: $result .= '</frameset>';
3355: } else {
3356: $result .= &endbodytag();
3357: }
3358: $result .= "\n</html>";
3359:
1.315 albertel 3360: if ($args->{'js_ready'}) {
1.317 albertel 3361: $result = &js_ready($result);
1.315 albertel 3362: }
1.335 albertel 3363:
1.320 albertel 3364: if ($args->{'html_encode'}) {
3365: $result = &html_encode($result);
3366: }
1.335 albertel 3367:
1.315 albertel 3368: return $result;
3369: }
3370:
1.320 albertel 3371: sub html_encode {
3372: my ($result) = @_;
3373:
1.322 albertel 3374: $result = &HTML::Entities::encode($result,'<>&"');
1.320 albertel 3375:
3376: return $result;
3377: }
1.317 albertel 3378: sub js_ready {
3379: my ($result) = @_;
3380:
1.323 albertel 3381: $result =~ s/[\n\r]/ /xmsg;
3382: $result =~ s/\\/\\\\/xmsg;
3383: $result =~ s/'/\\'/xmsg;
3384: $result =~ s{</script>}{</scrip'+'t>}xmsg;
1.317 albertel 3385:
3386: return $result;
3387: }
3388:
1.315 albertel 3389: sub validate_page {
3390: if ( exists($env{'internal.start_page'})
1.316 albertel 3391: && $env{'internal.start_page'} > 1) {
3392: &Apache::lonnet::logthis('start_page called multiple times '.
1.318 albertel 3393: $env{'internal.start_page'}.' '.
1.316 albertel 3394: $ENV{'request.filename'});
1.315 albertel 3395: }
3396: if ( exists($env{'internal.end_page'})
1.316 albertel 3397: && $env{'internal.end_page'} > 1) {
3398: &Apache::lonnet::logthis('end_page called multiple times '.
1.318 albertel 3399: $env{'internal.end_page'}.' '.
1.316 albertel 3400: $env{'request.filename'});
1.315 albertel 3401: }
3402: if ( exists($env{'internal.start_page'})
3403: && ! exists($env{'internal.end_page'})) {
1.316 albertel 3404: &Apache::lonnet::logthis('start_page called without end_page '.
3405: $env{'request.filename'});
1.315 albertel 3406: }
3407: if ( ! exists($env{'internal.start_page'})
3408: && exists($env{'internal.end_page'})) {
1.316 albertel 3409: &Apache::lonnet::logthis('end_page called without start_page'.
3410: $env{'request.filename'});
1.315 albertel 3411: }
1.306 albertel 3412: }
1.315 albertel 3413:
1.318 albertel 3414: sub simple_error_page {
3415: my ($r,$title,$msg) = @_;
3416: my $page =
3417: &Apache::loncommon::start_page($title).
3418: &mt($msg).
3419: &Apache::loncommon::end_page();
3420: if (ref($r)) {
3421: $r->print($page);
1.327 albertel 3422: return;
1.318 albertel 3423: }
3424: return $page;
3425: }
1.251 albertel 3426: ###############################################
1.182 matthew 3427:
3428: =pod
3429:
1.306 albertel 3430: =over 4
3431:
1.182 matthew 3432: =item get_users_function
3433:
3434: Used by &bodytag to determine the current users primary role.
3435: Returns either 'student','coordinator','admin', or 'author'.
3436:
3437: =cut
3438:
3439: ###############################################
3440: sub get_users_function {
3441: my $function = 'student';
1.258 albertel 3442: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
1.182 matthew 3443: $function='coordinator';
3444: }
1.258 albertel 3445: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
1.182 matthew 3446: $function='admin';
3447: }
1.258 albertel 3448: if (($env{'request.role'}=~/^(au|ca)/) ||
1.182 matthew 3449: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
3450: $function='author';
3451: }
3452: return $function;
1.54 www 3453: }
1.99 www 3454:
3455: ###############################################
3456:
1.233 raeburn 3457: =pod
3458:
1.274 raeburn 3459: =item check_user_status
3460:
3461: Determines current status of supplied role for a
3462: specific user. Roles can be active, previous or future.
3463:
3464: Inputs:
3465: user's domain, user's username, course's domain,
3466: course's number, optional section/group.
3467:
3468: Outputs:
3469: role status: active, previous or future.
3470:
3471: =cut
3472:
3473: sub check_user_status {
3474: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
3475: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
3476: my @uroles = keys %userinfo;
3477: my $srchstr;
3478: my $active_chk = 'none';
3479: if (@uroles > 0) {
3480: if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
3481: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
3482: } else {
3483: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role; }
3484: if (grep/^$srchstr$/,@uroles) {
3485: my $role_end = 0;
3486: my $role_start = 0;
3487: $active_chk = 'active';
3488: if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
3489: $role_end = $2;
3490: if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
3491: $role_start = $3;
3492: }
3493: }
3494: if ($role_start > 0) {
3495: if (time < $role_start) {
3496: $active_chk = 'future';
3497: }
3498: }
3499: if ($role_end > 0) {
3500: if (time > $role_end) {
3501: $active_chk = 'previous';
3502: }
3503: }
3504: }
3505: }
3506: return $active_chk;
3507: }
3508:
3509: ###############################################
3510:
3511: =pod
3512:
1.233 raeburn 3513: =item get_sections
3514:
3515: Determines all the sections for a course including
3516: sections with students and sections containing other roles.
3517: Incoming parameters: domain, course number, reference to
3518: section hash (keys to be section/group IDs), reference to
3519: array containing roles for which sections should be gathered
3520: (optional). If the fourth argument is undefined, sections
3521: are gathered for any role.
3522:
3523: Returns number of sections.
3524:
3525: =cut
3526:
3527: ###############################################
3528: sub get_sections {
3529: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
1.240 albertel 3530: if (!($cdom && $cnum)) { return 0; }
1.233 raeburn 3531: my $numsections = 0;
1.240 albertel 3532:
3533: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
1.276 albertel 3534: my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
1.240 albertel 3535: my $sec_index = &Apache::loncoursedata::CL_SECTION();
3536: my $status_index = &Apache::loncoursedata::CL_STATUS();
3537: while (my ($student,$data) = each %$classlist) {
3538: my ($section,$status) = ($data->[$sec_index],
3539: $data->[$status_index]);
3540: unless ($section eq '-1' || $section =~ /^\s*$/) {
3541: if (!defined($$sectioncount{$section})) { $numsections++; }
3542: $$sectioncount{$section}++;
3543: }
3544: }
3545: }
3546: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
3547: foreach my $user (sort(keys(%courseroles))) {
3548: if ($user !~ /^(\w{2})/) { next; }
3549: my ($role) = ($user =~ /^(\w{2})/);
3550: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
3551: my $section;
3552: if ($role eq 'cr' &&
3553: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
3554: $section=$1;
3555: }
3556: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
3557: if (!defined($section) || $section eq '-1') { next; }
3558: if (!defined($$sectioncount{$section})) { $numsections++; }
3559: $$sectioncount{$section}++;
1.233 raeburn 3560: }
3561: return $numsections;
3562: }
3563:
1.274 raeburn 3564: ###############################################
1.298 raeburn 3565:
3566: =pod
3567:
3568: =item coursegroups
3569:
3570: Retrieve information about groups in a course,
3571:
3572: Input:
3573: 1. Reference to hash to populate with group information.
3574: 2. Optional course domain
3575: 3. Optional course number
3576: 4. Optional group name
3577:
3578: Course domain and number will be taken from user's
3579: environment if not supplied. Optional group name will'
3580: be passed to lonnet::get_coursegroups() as a regexp to
3581: use in the call to the dump function.
3582:
3583: Output
3584: Returns number of groups in the course (subject to the
3585: optional group name filter).
3586:
3587: Side effects:
3588: Populates the referenced curr_groups hash, with key,
3589: value pairs. Keys are group names, corresponding values
3590: are scalars containing group information in XML. This
3591: can be sent to &get_group_settings() to be parsed.
3592:
3593: =cut
3594:
3595: ###############################################
3596:
3597: sub coursegroups {
3598: my ($curr_groups,$cdom,$cnum,$group) = @_;
3599: my $numgroups;
3600: if (!defined($cdom) || !defined($cnum)) {
3601: my $cid = $env{'request.course.id'};
3602: $cdom = $env{'course.'.$cid.'.domain'};
3603: $cnum = $env{'course.'.$cid.'.num'};
3604: }
3605: %{$curr_groups} = &Apache::lonnet::get_coursegroups($cdom,$cnum,$group);
3606: my ($tmp) = keys(%{$curr_groups});
3607: if ($tmp=~/^error:/) {
3608: unless ($tmp eq 'error: 2 tie(GDBM) Failed while attempting dump') {
3609: &logthis('Error retrieving groups: '.$tmp.' in '.$cnum.':'.
3610: $cdom);
3611: }
3612: $numgroups = 0;
3613: } else {
3614: $numgroups = keys(%{$curr_groups});
3615: }
3616: return $numgroups;
3617: }
3618:
3619: ###############################################
1.274 raeburn 3620:
1.275 raeburn 3621: =pod
1.294 raeburn 3622:
3623: =item get_group_settings
3624:
3625: Uses TokeParser to extract group information from the
3626: XML used to describe course groups.
3627:
3628: Input:
1.298 raeburn 3629: Scalar containing XML - as retrieved from &coursegroups().
1.294 raeburn 3630:
3631: Output:
3632: Hash containing group information as key=values for (a), and
3633: hash of hashes for (b)
3634:
3635: Keys (in two categories):
3636: (a) groupname, creator, creation, modified, startdate,enddate.
3637: Corresponding values are name of the group, creator of the group
3638: (username:domain), UNIX time for date group was created, and
3639: settings were last modified, and default start and end access
3640: times for group members.
3641:
3642: (b) functions returned in hash of hashes.
3643: Outer hash key is functions.
3644: Inner hash keys are chat,discussion,email,files,homepage,roster.
3645: Corresponding values are either on or off, depending on
1.303 raeburn 3646: whether this type of functionality is available for the group.
1.294 raeburn 3647:
3648: =cut
3649:
3650: ###############################################
3651:
3652: sub get_group_settings {
3653: my ($groupinfo)=@_;
3654: my $parser=HTML::TokeParser->new(\$groupinfo);
3655: my $token;
3656: my $tool = '';
1.303 raeburn 3657: my $role = '';
1.294 raeburn 3658: my %content=();
3659: while ($token=$parser->get_token) {
3660: if ($token->[0] eq 'S') {
3661: my $entry=$token->[1];
1.303 raeburn 3662: if ($entry eq 'functions' || $entry eq 'autosec') {
1.294 raeburn 3663: %{$content{$entry}} = ();
3664: $tool = $entry;
1.303 raeburn 3665: } elsif ($entry eq 'role') {
3666: if ($tool eq 'autosec') {
3667: $role = $token->[2]{id};
3668: }
1.294 raeburn 3669: } else {
3670: my $value=$parser->get_text('/'.$entry);
3671: if ($entry eq 'name') {
3672: if ($tool eq 'functions') {
3673: my $function = $token->[2]{id};
3674: $content{$tool}{$function} = $value;
3675: }
3676: } elsif ($entry eq 'groupname') {
3677: $content{$entry}=&Apache::lonnet::unescape($value);
1.303 raeburn 3678: } elsif (($entry eq 'roles') || ($entry eq 'types') ||
3679: ($entry eq 'sectionpick') || ($entry eq 'defpriv')) {
3680: push(@{$content{$entry}},$value);
3681: } elsif ($entry eq 'section') {
3682: if ($tool eq 'autosec' && $role ne '') {
3683: push(@{$content{$tool}{$role}},$value);
3684: }
1.294 raeburn 3685: } else {
3686: $content{$entry}=$value;
3687: }
3688: }
3689: } elsif ($token->[0] eq 'E') {
1.303 raeburn 3690: if ($token->[1] eq 'functions' || $token->[1] eq 'autosec') {
1.294 raeburn 3691: $tool = '';
1.303 raeburn 3692: } elsif ($token->[1] eq 'role') {
3693: $role = '';
1.294 raeburn 3694: }
1.303 raeburn 3695:
1.294 raeburn 3696: }
3697: }
3698: return %content;
3699: }
3700:
3701: sub check_group_access {
3702: my ($group) = @_;
3703: my $access = 1;
3704: my $now = time;
3705: my ($start,$end) = split(/\./,$env{'user.role.gr/'.$env{'request.course,id'}.'/'.$group});
3706: if (($end!=0) && ($end<$now)) { $access = 0; }
3707: if (($start!=0) && ($start>$now)) { $access=0; }
3708: return $access;
3709: }
3710:
3711: ###############################################
3712:
3713: =pod
1.275 raeburn 3714:
3715: =item get_course_users
3716:
3717: Retrieves usernames:domains for users in the specified course
3718: with specific role(s), and access status.
3719:
3720: Incoming parameters:
1.277 albertel 3721: 1. course domain
3722: 2. course number
3723: 3. access status: users must have - either active,
1.275 raeburn 3724: previous, future, or all.
1.277 albertel 3725: 4. reference to array of permissible roles
1.288 raeburn 3726: 5. reference to array of section restrictions (optional)
3727: 6. reference to results object (hash of hashes).
3728: 7. reference to optional userdata hash
1.275 raeburn 3729: Keys of top level hash are roles.
3730: Keys of inner hashes are username:domain, with
3731: values set to access type.
1.288 raeburn 3732: Optional userdata hash returns an array with arguments in the
3733: same order as loncoursedata::get_classlist() for student data.
3734:
3735: Entries for end, start, section and status are blank because
3736: of the possibility of multiple values for non-student roles.
3737:
1.275 raeburn 3738: =cut
3739:
3740: ###############################################
3741:
3742: sub get_course_users {
1.288 raeburn 3743: my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
3744: my %idx = ();
3745:
3746: $idx{udom} = &Apache::loncoursedata::CL_SDOM();
3747: $idx{uname} = &Apache::loncoursedata::CL_SNAME();
3748: $idx{end} = &Apache::loncoursedata::CL_END();
3749: $idx{start} = &Apache::loncoursedata::CL_START();
3750: $idx{id} = &Apache::loncoursedata::CL_ID();
3751: $idx{section} = &Apache::loncoursedata::CL_SECTION();
3752: $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
3753: $idx{status} = &Apache::loncoursedata::CL_STATUS();
3754:
1.290 albertel 3755: if (grep(/^st$/,@{$roles})) {
1.276 albertel 3756: my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
1.278 raeburn 3757: my $now = time;
1.277 albertel 3758: foreach my $student (keys(%{$classlist})) {
1.288 raeburn 3759: my $match = 0;
1.291 albertel 3760: if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
1.290 albertel 3761: unless(grep(/^\Q$$classlist{$student}[$idx{section}]\E$/,
3762: @{$sections})) {
3763: next;
3764: }
1.288 raeburn 3765: }
1.275 raeburn 3766: if (defined($$types{'active'})) {
1.288 raeburn 3767: if ($$classlist{$student}[$idx{status}] eq 'Active') {
1.275 raeburn 3768: push(@{$$users{st}{$student}},'active');
1.288 raeburn 3769: $match = 1;
1.275 raeburn 3770: }
3771: }
3772: if (defined($$types{'previous'})) {
1.288 raeburn 3773: if ($$classlist{$student}[$idx{end}] <= $now) {
1.275 raeburn 3774: push(@{$$users{st}{$student}},'previous');
1.288 raeburn 3775: $match = 1;
1.275 raeburn 3776: }
3777: }
3778: if (defined($$types{'future'})) {
1.288 raeburn 3779: if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
1.275 raeburn 3780: push(@{$$users{st}{$student}},'future');
1.288 raeburn 3781: $match = 1;
1.275 raeburn 3782: }
3783: }
1.288 raeburn 3784: if ($match && defined($userdata)) {
3785: $$userdata{$student} = $$classlist{$student};
3786: }
1.275 raeburn 3787: }
3788: }
3789: if ((@{$roles} > 0) && (@{$roles} ne "st")) {
3790: my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
3791: foreach my $person (@coursepersonnel) {
1.288 raeburn 3792: my $match = 0;
1.275 raeburn 3793: my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
3794: $user =~ s/:$//;
1.290 albertel 3795: if (($role) && (grep(/^\Q$role\E$/,@{$roles}))) {
1.288 raeburn 3796: my ($uname,$udom,$usec) = split(/:/,$user);
1.290 albertel 3797: if ($usec ne '' && (ref($sections) eq 'ARRAY') &&
3798: @{$sections} > 0) {
3799: unless(grep(/^\Q$usec\E$/,@{$sections})) {
3800: next;
3801: }
1.288 raeburn 3802: }
1.275 raeburn 3803: if ($uname ne '' && $udom ne '') {
3804: my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
1.277 albertel 3805: foreach my $type (keys(%{$types})) {
1.275 raeburn 3806: if ($status eq $type) {
1.288 raeburn 3807: @{$$users{$role}{$user}} = $type;
3808: $match = 1;
3809: }
3810: }
1.290 albertel 3811: if ($match && defined($userdata) &&
3812: !exists($$userdata{$uname.':'.$udom})) {
3813: &get_user_info($udom,$uname,\%idx,$userdata);
1.275 raeburn 3814: }
3815: }
3816: }
3817: }
1.290 albertel 3818: if (grep(/^ow$/,@{$roles})) {
1.279 raeburn 3819: if ((defined($cdom)) && (defined($cnum))) {
3820: my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
3821: if ( defined($csettings{'internal.courseowner'}) ) {
3822: my $owner = $csettings{'internal.courseowner'};
1.288 raeburn 3823: @{$$users{'ow'}{$owner.':'.$cdom}} = 'any';
1.290 albertel 3824: if (defined($userdata) &&
3825: !exists($$userdata{$owner.':'.$cdom})) {
3826: &get_user_info($cdom,$owner,\%idx,$userdata);
3827: }
1.279 raeburn 3828: }
3829: }
3830: }
1.275 raeburn 3831: }
3832: return;
3833: }
3834:
1.288 raeburn 3835: sub get_user_info {
3836: my ($udom,$uname,$idx,$userdata) = @_;
1.289 albertel 3837: $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
3838: &plainname($uname,$udom,'lastname');
1.291 albertel 3839: $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
1.297 raeburn 3840: $$userdata{$uname.':'.$udom}[$$idx{udom}] = $udom;
1.288 raeburn 3841: return;
3842: }
1.275 raeburn 3843:
1.112 bowersj2 3844: =pod
3845:
3846: =item * get_unprocessed_cgi($query,$possible_names)
3847:
1.258 albertel 3848: Modify the %env hash to contain unprocessed CGI form parameters held in
1.112 bowersj2 3849: $query. The parameters listed in $possible_names (an array reference),
1.258 albertel 3850: will be set in $env{'form.name'} if they do not already exist.
1.112 bowersj2 3851:
3852: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
3853: $possible_names is an ref to an array of form element names. As an example:
3854: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
1.258 albertel 3855: will result in $env{'form.uname'} and $env{'form.udom'} being set.
1.112 bowersj2 3856:
3857: =cut
1.1 albertel 3858:
1.6 albertel 3859: sub get_unprocessed_cgi {
1.25 albertel 3860: my ($query,$possible_names)= @_;
1.26 matthew 3861: # $Apache::lonxml::debug=1;
1.16 harris41 3862: foreach (split(/&/,$query)) {
1.6 albertel 3863: my ($name, $value) = split(/=/,$_);
1.25 albertel 3864: $name = &Apache::lonnet::unescape($name);
3865: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
3866: $value =~ tr/+/ /;
3867: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.258 albertel 3868: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
1.25 albertel 3869: }
1.16 harris41 3870: }
1.6 albertel 3871: }
3872:
1.112 bowersj2 3873: =pod
3874:
3875: =item * cacheheader()
3876:
3877: returns cache-controlling header code
3878:
3879: =cut
3880:
1.7 albertel 3881: sub cacheheader {
1.258 albertel 3882: unless ($env{'request.method'} eq 'GET') { return ''; }
1.216 albertel 3883: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
3884: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
1.7 albertel 3885: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
3886: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
1.216 albertel 3887: return $output;
1.7 albertel 3888: }
3889:
1.112 bowersj2 3890: =pod
3891:
3892: =item * no_cache($r)
3893:
3894: specifies header code to not have cache
3895:
3896: =cut
3897:
1.9 albertel 3898: sub no_cache {
1.216 albertel 3899: my ($r) = @_;
3900: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
1.258 albertel 3901: $env{'request.method'} ne 'GET') { return ''; }
1.216 albertel 3902: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
3903: $r->no_cache(1);
3904: $r->header_out("Expires" => $date);
3905: $r->header_out("Pragma" => "no-cache");
1.123 www 3906: }
3907:
3908: sub content_type {
1.181 albertel 3909: my ($r,$type,$charset) = @_;
1.299 foxr 3910: if ($r) {
3911: # Note that printout.pl calls this with undef for $r.
3912: &no_cache($r);
3913: }
1.258 albertel 3914: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
1.181 albertel 3915: unless ($charset) {
3916: $charset=&Apache::lonlocal::current_encoding;
3917: }
3918: if ($charset) { $type.='; charset='.$charset; }
3919: if ($r) {
3920: $r->content_type($type);
3921: } else {
3922: print("Content-type: $type\n\n");
3923: }
1.9 albertel 3924: }
1.25 albertel 3925:
1.112 bowersj2 3926: =pod
3927:
3928: =item * add_to_env($name,$value)
3929:
1.258 albertel 3930: adds $name to the %env hash with value
1.112 bowersj2 3931: $value, if $name already exists, the entry is converted to an array
3932: reference and $value is added to the array.
3933:
3934: =cut
3935:
1.25 albertel 3936: sub add_to_env {
3937: my ($name,$value)=@_;
1.258 albertel 3938: if (defined($env{$name})) {
3939: if (ref($env{$name})) {
1.25 albertel 3940: #already have multiple values
1.258 albertel 3941: push(@{ $env{$name} },$value);
1.25 albertel 3942: } else {
3943: #first time seeing multiple values, convert hash entry to an arrayref
1.258 albertel 3944: my $first=$env{$name};
3945: undef($env{$name});
3946: push(@{ $env{$name} },$first,$value);
1.25 albertel 3947: }
3948: } else {
1.258 albertel 3949: $env{$name}=$value;
1.25 albertel 3950: }
1.31 albertel 3951: }
1.149 albertel 3952:
3953: =pod
3954:
3955: =item * get_env_multiple($name)
3956:
1.258 albertel 3957: gets $name from the %env hash, it seemlessly handles the cases where multiple
1.149 albertel 3958: values may be defined and end up as an array ref.
3959:
3960: returns an array of values
3961:
3962: =cut
3963:
3964: sub get_env_multiple {
3965: my ($name) = @_;
3966: my @values;
1.258 albertel 3967: if (defined($env{$name})) {
1.149 albertel 3968: # exists is it an array
1.258 albertel 3969: if (ref($env{$name})) {
3970: @values=@{ $env{$name} };
1.149 albertel 3971: } else {
1.258 albertel 3972: $values[0]=$env{$name};
1.149 albertel 3973: }
3974: }
3975: return(@values);
3976: }
3977:
1.31 albertel 3978:
1.41 ng 3979: =pod
1.45 matthew 3980:
3981: =back
1.41 ng 3982:
1.112 bowersj2 3983: =head1 CSV Upload/Handling functions
1.38 albertel 3984:
1.41 ng 3985: =over 4
3986:
1.112 bowersj2 3987: =item * upfile_store($r)
1.41 ng 3988:
3989: Store uploaded file, $r should be the HTTP Request object,
1.258 albertel 3990: needs $env{'form.upfile'}
1.41 ng 3991: returns $datatoken to be put into hidden field
3992:
3993: =cut
1.31 albertel 3994:
3995: sub upfile_store {
3996: my $r=shift;
1.258 albertel 3997: $env{'form.upfile'}=~s/\r/\n/gs;
3998: $env{'form.upfile'}=~s/\f/\n/gs;
3999: $env{'form.upfile'}=~s/\n+/\n/gs;
4000: $env{'form.upfile'}=~s/\n+$//gs;
1.31 albertel 4001:
1.258 albertel 4002: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
4003: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
1.31 albertel 4004: {
1.158 raeburn 4005: my $datafile = $r->dir_config('lonDaemons').
4006: '/tmp/'.$datatoken.'.tmp';
4007: if ( open(my $fh,">$datafile") ) {
1.258 albertel 4008: print $fh $env{'form.upfile'};
1.158 raeburn 4009: close($fh);
4010: }
1.31 albertel 4011: }
4012: return $datatoken;
4013: }
4014:
1.56 matthew 4015: =pod
4016:
1.112 bowersj2 4017: =item * load_tmp_file($r)
1.41 ng 4018:
4019: Load uploaded file from tmp, $r should be the HTTP Request object,
1.258 albertel 4020: needs $env{'form.datatoken'},
4021: sets $env{'form.upfile'} to the contents of the file
1.41 ng 4022:
4023: =cut
1.31 albertel 4024:
4025: sub load_tmp_file {
4026: my $r=shift;
4027: my @studentdata=();
4028: {
1.158 raeburn 4029: my $studentfile = $r->dir_config('lonDaemons').
1.258 albertel 4030: '/tmp/'.$env{'form.datatoken'}.'.tmp';
1.158 raeburn 4031: if ( open(my $fh,"<$studentfile") ) {
4032: @studentdata=<$fh>;
4033: close($fh);
4034: }
1.31 albertel 4035: }
1.258 albertel 4036: $env{'form.upfile'}=join('',@studentdata);
1.31 albertel 4037: }
4038:
1.56 matthew 4039: =pod
4040:
1.112 bowersj2 4041: =item * upfile_record_sep()
1.41 ng 4042:
4043: Separate uploaded file into records
4044: returns array of records,
1.258 albertel 4045: needs $env{'form.upfile'} and $env{'form.upfiletype'}
1.41 ng 4046:
4047: =cut
1.31 albertel 4048:
4049: sub upfile_record_sep {
1.258 albertel 4050: if ($env{'form.upfiletype'} eq 'xml') {
1.31 albertel 4051: } else {
1.248 albertel 4052: my @records;
1.258 albertel 4053: foreach my $line (split(/\n/,$env{'form.upfile'})) {
1.248 albertel 4054: if ($line=~/^\s*$/) { next; }
4055: push(@records,$line);
4056: }
4057: return @records;
1.31 albertel 4058: }
4059: }
4060:
1.56 matthew 4061: =pod
4062:
1.112 bowersj2 4063: =item * record_sep($record)
1.41 ng 4064:
1.258 albertel 4065: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
1.41 ng 4066:
4067: =cut
4068:
1.263 www 4069: sub takeleft {
4070: my $index=shift;
4071: return substr('0000'.$index,-4,4);
4072: }
4073:
1.31 albertel 4074: sub record_sep {
4075: my $record=shift;
4076: my %components=();
1.258 albertel 4077: if ($env{'form.upfiletype'} eq 'xml') {
4078: } elsif ($env{'form.upfiletype'} eq 'space') {
1.31 albertel 4079: my $i=0;
4080: foreach (split(/\s+/,$record)) {
4081: my $field=$_;
4082: $field=~s/^(\"|\')//;
4083: $field=~s/(\"|\')$//;
1.263 www 4084: $components{&takeleft($i)}=$field;
1.31 albertel 4085: $i++;
4086: }
1.258 albertel 4087: } elsif ($env{'form.upfiletype'} eq 'tab') {
1.31 albertel 4088: my $i=0;
1.171 matthew 4089: foreach (split(/\t/,$record)) {
1.31 albertel 4090: my $field=$_;
4091: $field=~s/^(\"|\')//;
4092: $field=~s/(\"|\')$//;
1.263 www 4093: $components{&takeleft($i)}=$field;
1.31 albertel 4094: $i++;
4095: }
4096: } else {
4097: my @allfields=split(/\,/,$record);
4098: my $i=0;
4099: my $j;
4100: for ($j=0;$j<=$#allfields;$j++) {
4101: my $field=$allfields[$j];
4102: if ($field=~/^\s*(\"|\')/) {
4103: my $delimiter=$1;
4104: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
4105: $j++;
4106: $field.=','.$allfields[$j];
4107: }
4108: $field=~s/^\s*$delimiter//;
4109: $field=~s/$delimiter\s*$//;
4110: }
1.263 www 4111: $components{&takeleft($i)}=$field;
1.31 albertel 4112: $i++;
4113: }
4114: }
4115: return %components;
4116: }
4117:
1.144 matthew 4118: ######################################################
4119: ######################################################
4120:
1.56 matthew 4121: =pod
4122:
1.112 bowersj2 4123: =item * upfile_select_html()
1.41 ng 4124:
1.144 matthew 4125: Return HTML code to select a file from the users machine and specify
4126: the file type.
1.41 ng 4127:
4128: =cut
4129:
1.144 matthew 4130: ######################################################
4131: ######################################################
1.31 albertel 4132: sub upfile_select_html {
1.144 matthew 4133: my %Types = (
4134: csv => &mt('CSV (comma separated values, spreadsheet)'),
4135: space => &mt('Space separated'),
4136: tab => &mt('Tabulator separated'),
4137: # xml => &mt('HTML/XML'),
4138: );
4139: my $Str = '<input type="file" name="upfile" size="50" />'.
4140: '<br />Type: <select name="upfiletype">';
4141: foreach my $type (sort(keys(%Types))) {
4142: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
4143: }
4144: $Str .= "</select>\n";
4145: return $Str;
1.31 albertel 4146: }
4147:
1.301 albertel 4148: sub get_samples {
4149: my ($records,$toget) = @_;
4150: my @samples=({});
4151: my $got=0;
4152: foreach my $rec (@$records) {
4153: my %temp = &record_sep($rec);
4154: if (! grep(/\S/, values(%temp))) { next; }
4155: if (%temp) {
4156: $samples[$got]=\%temp;
4157: $got++;
4158: if ($got == $toget) { last; }
4159: }
4160: }
4161: return \@samples;
4162: }
4163:
1.144 matthew 4164: ######################################################
4165: ######################################################
4166:
1.56 matthew 4167: =pod
4168:
1.112 bowersj2 4169: =item * csv_print_samples($r,$records)
1.41 ng 4170:
4171: Prints a table of sample values from each column uploaded $r is an
4172: Apache Request ref, $records is an arrayref from
4173: &Apache::loncommon::upfile_record_sep
4174:
4175: =cut
4176:
1.144 matthew 4177: ######################################################
4178: ######################################################
1.31 albertel 4179: sub csv_print_samples {
4180: my ($r,$records) = @_;
1.301 albertel 4181: my $samples = &get_samples($records,3);
4182:
1.144 matthew 4183: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
1.301 albertel 4184: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
1.144 matthew 4185: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
1.31 albertel 4186: $r->print('</tr>');
1.301 albertel 4187: foreach my $hash (@$samples) {
1.31 albertel 4188: $r->print('<tr>');
1.301 albertel 4189: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
1.31 albertel 4190: $r->print('<td>');
4191: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
4192: $r->print('</td>');
4193: }
4194: $r->print('</tr>');
4195: }
4196: $r->print('</tr></table><br />'."\n");
4197: }
4198:
1.144 matthew 4199: ######################################################
4200: ######################################################
4201:
1.56 matthew 4202: =pod
4203:
1.112 bowersj2 4204: =item * csv_print_select_table($r,$records,$d)
1.41 ng 4205:
4206: Prints a table to create associations between values and table columns.
1.144 matthew 4207:
1.41 ng 4208: $r is an Apache Request ref,
4209: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
1.174 matthew 4210: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
1.41 ng 4211:
4212: =cut
4213:
1.144 matthew 4214: ######################################################
4215: ######################################################
1.31 albertel 4216: sub csv_print_select_table {
4217: my ($r,$records,$d) = @_;
1.301 albertel 4218: my $i=0;
4219: my $samples = &get_samples($records,1);
1.144 matthew 4220: $r->print(&mt('Associate columns with student attributes.')."\n".
4221: '<table border="2"><tr>'.
4222: '<th>'.&mt('Attribute').'</th>'.
4223: '<th>'.&mt('Column').'</th></tr>'."\n");
1.31 albertel 4224: foreach (@$d) {
1.174 matthew 4225: my ($value,$display,$defaultcol)=@{ $_ };
1.31 albertel 4226: $r->print('<tr><td>'.$display.'</td>');
4227:
4228: $r->print('<td><select name=f'.$i.
1.32 matthew 4229: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 4230: $r->print('<option value="none"></option>');
1.301 albertel 4231: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
1.174 matthew 4232: $r->print('<option value="'.$_.'"'.
1.253 albertel 4233: ($_ eq $defaultcol ? ' selected="selected" ' : '').
1.174 matthew 4234: '>Column '.($_+1).'</option>');
1.31 albertel 4235: }
4236: $r->print('</select></td></tr>'."\n");
4237: $i++;
4238: }
4239: $i--;
4240: return $i;
4241: }
1.56 matthew 4242:
1.144 matthew 4243: ######################################################
4244: ######################################################
4245:
1.56 matthew 4246: =pod
1.31 albertel 4247:
1.112 bowersj2 4248: =item * csv_samples_select_table($r,$records,$d)
1.41 ng 4249:
4250: Prints a table of sample values from the upload and can make associate samples to internal names.
4251:
4252: $r is an Apache Request ref,
4253: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
4254: $d is an array of 2 element arrays (internal name, displayed name)
4255:
4256: =cut
4257:
1.144 matthew 4258: ######################################################
4259: ######################################################
1.31 albertel 4260: sub csv_samples_select_table {
4261: my ($r,$records,$d) = @_;
4262: my $i=0;
1.144 matthew 4263: #
1.301 albertel 4264: my $samples = &get_samples($records,3);
1.144 matthew 4265: $r->print('<table border=2><tr><th>'.
4266: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
1.301 albertel 4267:
4268: foreach my $key (sort(keys(%{ $samples->[0] }))) {
1.144 matthew 4269: $r->print('<tr><td><select name="f'.$i.'"'.
1.32 matthew 4270: ' onchange="javascript:flip(this.form,'.$i.');">');
1.301 albertel 4271: foreach my $option (@$d) {
4272: my ($value,$display,$defaultcol)=@{ $option };
1.174 matthew 4273: $r->print('<option value="'.$value.'"'.
1.253 albertel 4274: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
1.174 matthew 4275: $display.'</option>');
1.31 albertel 4276: }
4277: $r->print('</select></td><td>');
1.301 albertel 4278: foreach my $line (0..2) {
4279: if (defined($samples->[$line]{$key})) {
4280: $r->print($samples->[$line]{$key}."<br />\n");
4281: }
4282: }
1.31 albertel 4283: $r->print('</td></tr>');
4284: $i++;
4285: }
4286: $i--;
4287: return($i);
1.115 matthew 4288: }
4289:
1.144 matthew 4290: ######################################################
4291: ######################################################
4292:
1.115 matthew 4293: =pod
4294:
4295: =item clean_excel_name($name)
4296:
4297: Returns a replacement for $name which does not contain any illegal characters.
4298:
4299: =cut
4300:
1.144 matthew 4301: ######################################################
4302: ######################################################
1.115 matthew 4303: sub clean_excel_name {
4304: my ($name) = @_;
4305: $name =~ s/[:\*\?\/\\]//g;
4306: if (length($name) > 31) {
4307: $name = substr($name,0,31);
4308: }
4309: return $name;
1.25 albertel 4310: }
1.84 albertel 4311:
1.85 albertel 4312: =pod
4313:
1.112 bowersj2 4314: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
1.85 albertel 4315:
4316: Returns either 1 or undef
4317:
4318: 1 if the part is to be hidden, undef if it is to be shown
4319:
4320: Arguments are:
4321:
4322: $id the id of the part to be checked
4323: $symb, optional the symb of the resource to check
4324: $udom, optional the domain of the user to check for
4325: $uname, optional the username of the user to check for
4326:
4327: =cut
1.84 albertel 4328:
4329: sub check_if_partid_hidden {
4330: my ($id,$symb,$udom,$uname) = @_;
1.133 albertel 4331: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
1.84 albertel 4332: $symb,$udom,$uname);
1.141 albertel 4333: my $truth=1;
4334: #if the string starts with !, then the list is the list to show not hide
4335: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
1.84 albertel 4336: my @hiddenlist=split(/,/,$hiddenparts);
4337: foreach my $checkid (@hiddenlist) {
1.141 albertel 4338: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
1.84 albertel 4339: }
1.141 albertel 4340: return !$truth;
1.84 albertel 4341: }
1.127 matthew 4342:
1.138 matthew 4343:
4344: ############################################################
4345: ############################################################
4346:
4347: =pod
4348:
1.157 matthew 4349: =back
4350:
1.138 matthew 4351: =head1 cgi-bin script and graphing routines
4352:
1.157 matthew 4353: =over 4
4354:
1.138 matthew 4355: =item get_cgi_id
4356:
4357: Inputs: none
4358:
4359: Returns an id which can be used to pass environment variables
4360: to various cgi-bin scripts. These environment variables will
4361: be removed from the users environment after a given time by
4362: the routine &Apache::lonnet::transfer_profile_to_env.
4363:
4364: =cut
4365:
4366: ############################################################
4367: ############################################################
1.152 albertel 4368: my $uniq=0;
1.136 matthew 4369: sub get_cgi_id {
1.154 albertel 4370: $uniq=($uniq+1)%100000;
1.280 albertel 4371: return (time.'_'.$$.'_'.$uniq);
1.136 matthew 4372: }
4373:
1.127 matthew 4374: ############################################################
4375: ############################################################
4376:
4377: =pod
4378:
1.134 matthew 4379: =item DrawBarGraph
1.127 matthew 4380:
1.138 matthew 4381: Facilitates the plotting of data in a (stacked) bar graph.
4382: Puts plot definition data into the users environment in order for
4383: graph.png to plot it. Returns an <img> tag for the plot.
4384: The bars on the plot are labeled '1','2',...,'n'.
4385:
4386: Inputs:
4387:
4388: =over 4
4389:
4390: =item $Title: string, the title of the plot
4391:
4392: =item $xlabel: string, text describing the X-axis of the plot
4393:
4394: =item $ylabel: string, text describing the Y-axis of the plot
4395:
4396: =item $Max: scalar, the maximum Y value to use in the plot
4397: If $Max is < any data point, the graph will not be rendered.
4398:
1.140 matthew 4399: =item $colors: array ref holding the colors to be used for the data sets when
1.138 matthew 4400: they are plotted. If undefined, default values will be used.
4401:
1.178 matthew 4402: =item $labels: array ref holding the labels to use on the x-axis for the bars.
4403:
1.138 matthew 4404: =item @Values: An array of array references. Each array reference holds data
4405: to be plotted in a stacked bar chart.
4406:
1.239 matthew 4407: =item If the final element of @Values is a hash reference the key/value
4408: pairs will be added to the graph definition.
4409:
1.138 matthew 4410: =back
4411:
4412: Returns:
4413:
4414: An <img> tag which references graph.png and the appropriate identifying
4415: information for the plot.
4416:
1.127 matthew 4417: =cut
4418:
4419: ############################################################
4420: ############################################################
1.134 matthew 4421: sub DrawBarGraph {
1.178 matthew 4422: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
1.134 matthew 4423: #
4424: if (! defined($colors)) {
4425: $colors = ['#33ff00',
4426: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
4427: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
4428: ];
4429: }
1.228 matthew 4430: my $extra_settings = {};
4431: if (ref($Values[-1]) eq 'HASH') {
4432: $extra_settings = pop(@Values);
4433: }
1.127 matthew 4434: #
1.136 matthew 4435: my $identifier = &get_cgi_id();
4436: my $id = 'cgi.'.$identifier;
1.129 matthew 4437: if (! @Values || ref($Values[0]) ne 'ARRAY') {
1.127 matthew 4438: return '';
4439: }
1.225 matthew 4440: #
4441: my @Labels;
4442: if (defined($labels)) {
4443: @Labels = @$labels;
4444: } else {
4445: for (my $i=0;$i<@{$Values[0]};$i++) {
4446: push (@Labels,$i+1);
4447: }
4448: }
4449: #
1.129 matthew 4450: my $NumBars = scalar(@{$Values[0]});
1.225 matthew 4451: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
1.129 matthew 4452: my %ValuesHash;
4453: my $NumSets=1;
4454: foreach my $array (@Values) {
4455: next if (! ref($array));
1.136 matthew 4456: $ValuesHash{$id.'.data.'.$NumSets++} =
1.132 matthew 4457: join(',',@$array);
1.129 matthew 4458: }
1.127 matthew 4459: #
1.136 matthew 4460: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
1.225 matthew 4461: if ($NumBars < 3) {
4462: $width = 120+$NumBars*32;
1.220 matthew 4463: $xskip = 1;
1.225 matthew 4464: $bar_width = 30;
4465: } elsif ($NumBars < 5) {
4466: $width = 120+$NumBars*20;
4467: $xskip = 1;
4468: $bar_width = 20;
1.220 matthew 4469: } elsif ($NumBars < 10) {
1.136 matthew 4470: $width = 120+$NumBars*15;
4471: $xskip = 1;
4472: $bar_width = 15;
4473: } elsif ($NumBars <= 25) {
4474: $width = 120+$NumBars*11;
4475: $xskip = 5;
4476: $bar_width = 8;
4477: } elsif ($NumBars <= 50) {
4478: $width = 120+$NumBars*8;
4479: $xskip = 5;
4480: $bar_width = 4;
4481: } else {
4482: $width = 120+$NumBars*8;
4483: $xskip = 5;
4484: $bar_width = 4;
4485: }
4486: #
1.137 matthew 4487: $Max = 1 if ($Max < 1);
4488: if ( int($Max) < $Max ) {
4489: $Max++;
4490: $Max = int($Max);
4491: }
1.127 matthew 4492: $Title = '' if (! defined($Title));
4493: $xlabel = '' if (! defined($xlabel));
4494: $ylabel = '' if (! defined($ylabel));
1.136 matthew 4495: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
4496: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
4497: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
1.137 matthew 4498: $ValuesHash{$id.'.y_max_value'} = $Max;
1.136 matthew 4499: $ValuesHash{$id.'.NumBars'} = $NumBars;
4500: $ValuesHash{$id.'.NumSets'} = $NumSets;
4501: $ValuesHash{$id.'.PlotType'} = 'bar';
4502: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4503: $ValuesHash{$id.'.height'} = $height;
4504: $ValuesHash{$id.'.width'} = $width;
4505: $ValuesHash{$id.'.xskip'} = $xskip;
4506: $ValuesHash{$id.'.bar_width'} = $bar_width;
4507: $ValuesHash{$id.'.labels'} = join(',',@Labels);
1.127 matthew 4508: #
1.228 matthew 4509: # Deal with other parameters
4510: while (my ($key,$value) = each(%$extra_settings)) {
4511: $ValuesHash{$id.'.'.$key} = $value;
4512: }
4513: #
1.137 matthew 4514: &Apache::lonnet::appenv(%ValuesHash);
4515: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4516: }
4517:
4518: ############################################################
4519: ############################################################
4520:
4521: =pod
4522:
4523: =item DrawXYGraph
4524:
1.138 matthew 4525: Facilitates the plotting of data in an XY graph.
4526: Puts plot definition data into the users environment in order for
4527: graph.png to plot it. Returns an <img> tag for the plot.
4528:
4529: Inputs:
4530:
4531: =over 4
4532:
4533: =item $Title: string, the title of the plot
4534:
4535: =item $xlabel: string, text describing the X-axis of the plot
4536:
4537: =item $ylabel: string, text describing the Y-axis of the plot
4538:
4539: =item $Max: scalar, the maximum Y value to use in the plot
4540: If $Max is < any data point, the graph will not be rendered.
4541:
4542: =item $colors: Array ref containing the hex color codes for the data to be
4543: plotted in. If undefined, default values will be used.
4544:
4545: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4546:
4547: =item $Ydata: Array ref containing Array refs.
1.185 www 4548: Each of the contained arrays will be plotted as a separate curve.
1.138 matthew 4549:
4550: =item %Values: hash indicating or overriding any default values which are
4551: passed to graph.png.
4552: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4553:
4554: =back
4555:
4556: Returns:
4557:
4558: An <img> tag which references graph.png and the appropriate identifying
4559: information for the plot.
4560:
1.137 matthew 4561: =cut
4562:
4563: ############################################################
4564: ############################################################
4565: sub DrawXYGraph {
4566: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
4567: #
4568: # Create the identifier for the graph
4569: my $identifier = &get_cgi_id();
4570: my $id = 'cgi.'.$identifier;
4571: #
4572: $Title = '' if (! defined($Title));
4573: $xlabel = '' if (! defined($xlabel));
4574: $ylabel = '' if (! defined($ylabel));
4575: my %ValuesHash =
4576: (
4577: $id.'.title' => &Apache::lonnet::escape($Title),
4578: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4579: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4580: $id.'.y_max_value'=> $Max,
4581: $id.'.labels' => join(',',@$Xlabels),
4582: $id.'.PlotType' => 'XY',
4583: );
4584: #
4585: if (defined($colors) && ref($colors) eq 'ARRAY') {
4586: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4587: }
4588: #
4589: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
4590: return '';
4591: }
4592: my $NumSets=1;
1.138 matthew 4593: foreach my $array (@{$Ydata}){
1.137 matthew 4594: next if (! ref($array));
4595: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4596: }
1.138 matthew 4597: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
1.137 matthew 4598: #
4599: # Deal with other parameters
4600: while (my ($key,$value) = each(%Values)) {
4601: $ValuesHash{$id.'.'.$key} = $value;
1.127 matthew 4602: }
4603: #
1.136 matthew 4604: &Apache::lonnet::appenv(%ValuesHash);
4605: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4606: }
4607:
4608: ############################################################
4609: ############################################################
4610:
4611: =pod
4612:
1.138 matthew 4613: =item DrawXYYGraph
4614:
4615: Facilitates the plotting of data in an XY graph with two Y axes.
4616: Puts plot definition data into the users environment in order for
4617: graph.png to plot it. Returns an <img> tag for the plot.
4618:
4619: Inputs:
4620:
4621: =over 4
4622:
4623: =item $Title: string, the title of the plot
4624:
4625: =item $xlabel: string, text describing the X-axis of the plot
4626:
4627: =item $ylabel: string, text describing the Y-axis of the plot
4628:
4629: =item $colors: Array ref containing the hex color codes for the data to be
4630: plotted in. If undefined, default values will be used.
4631:
4632: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4633:
4634: =item $Ydata1: The first data set
4635:
4636: =item $Min1: The minimum value of the left Y-axis
4637:
4638: =item $Max1: The maximum value of the left Y-axis
4639:
4640: =item $Ydata2: The second data set
4641:
4642: =item $Min2: The minimum value of the right Y-axis
4643:
4644: =item $Max2: The maximum value of the left Y-axis
4645:
4646: =item %Values: hash indicating or overriding any default values which are
4647: passed to graph.png.
4648: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4649:
4650: =back
4651:
4652: Returns:
4653:
4654: An <img> tag which references graph.png and the appropriate identifying
4655: information for the plot.
1.136 matthew 4656:
4657: =cut
4658:
4659: ############################################################
4660: ############################################################
1.137 matthew 4661: sub DrawXYYGraph {
4662: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
4663: $Ydata2,$Min2,$Max2,%Values)=@_;
1.136 matthew 4664: #
4665: # Create the identifier for the graph
4666: my $identifier = &get_cgi_id();
4667: my $id = 'cgi.'.$identifier;
4668: #
4669: $Title = '' if (! defined($Title));
4670: $xlabel = '' if (! defined($xlabel));
4671: $ylabel = '' if (! defined($ylabel));
4672: my %ValuesHash =
4673: (
4674: $id.'.title' => &Apache::lonnet::escape($Title),
4675: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4676: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4677: $id.'.labels' => join(',',@$Xlabels),
4678: $id.'.PlotType' => 'XY',
4679: $id.'.NumSets' => 2,
1.137 matthew 4680: $id.'.two_axes' => 1,
4681: $id.'.y1_max_value' => $Max1,
4682: $id.'.y1_min_value' => $Min1,
4683: $id.'.y2_max_value' => $Max2,
4684: $id.'.y2_min_value' => $Min2,
1.136 matthew 4685: );
4686: #
1.137 matthew 4687: if (defined($colors) && ref($colors) eq 'ARRAY') {
4688: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4689: }
4690: #
4691: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
4692: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
1.136 matthew 4693: return '';
4694: }
4695: my $NumSets=1;
1.137 matthew 4696: foreach my $array ($Ydata1,$Ydata2){
1.136 matthew 4697: next if (! ref($array));
4698: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
1.137 matthew 4699: }
4700: #
4701: # Deal with other parameters
4702: while (my ($key,$value) = each(%Values)) {
4703: $ValuesHash{$id.'.'.$key} = $value;
1.136 matthew 4704: }
4705: #
4706: &Apache::lonnet::appenv(%ValuesHash);
1.130 albertel 4707: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
1.139 matthew 4708: }
4709:
4710: ############################################################
4711: ############################################################
4712:
4713: =pod
4714:
1.157 matthew 4715: =back
4716:
1.139 matthew 4717: =head1 Statistics helper routines?
4718:
4719: Bad place for them but what the hell.
4720:
1.157 matthew 4721: =over 4
4722:
1.139 matthew 4723: =item &chartlink
4724:
4725: Returns a link to the chart for a specific student.
4726:
4727: Inputs:
4728:
4729: =over 4
4730:
4731: =item $linktext: The text of the link
4732:
4733: =item $sname: The students username
4734:
4735: =item $sdomain: The students domain
4736:
4737: =back
4738:
1.157 matthew 4739: =back
4740:
1.139 matthew 4741: =cut
4742:
4743: ############################################################
4744: ############################################################
4745: sub chartlink {
4746: my ($linktext, $sname, $sdomain) = @_;
4747: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
1.219 albertel 4748: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
4749: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
1.139 matthew 4750: '">'.$linktext.'</a>';
1.153 matthew 4751: }
4752:
4753: #######################################################
4754: #######################################################
4755:
4756: =pod
4757:
4758: =head1 Course Environment Routines
1.157 matthew 4759:
4760: =over 4
1.153 matthew 4761:
4762: =item &restore_course_settings
4763:
4764: =item &store_course_settings
4765:
4766: Restores/Store indicated form parameters from the course environment.
4767: Will not overwrite existing values of the form parameters.
4768:
4769: Inputs:
4770: a scalar describing the data (e.g. 'chart', 'problem_analysis')
4771:
4772: a hash ref describing the data to be stored. For example:
4773:
4774: %Save_Parameters = ('Status' => 'scalar',
4775: 'chartoutputmode' => 'scalar',
4776: 'chartoutputdata' => 'scalar',
4777: 'Section' => 'array',
4778: 'StudentData' => 'array',
4779: 'Maps' => 'array');
4780:
4781: Returns: both routines return nothing
4782:
4783: =cut
4784:
4785: #######################################################
4786: #######################################################
4787: sub store_course_settings {
4788: # save to the environment
4789: # appenv the same items, just to be safe
1.258 albertel 4790: my $courseid = $env{'request.course.id'};
1.300 albertel 4791: my $udom = $env{'user.domain'};
4792: my $uname = $env{'user.name'};
1.153 matthew 4793: my ($prefix,$Settings) = @_;
4794: my %SaveHash;
4795: my %AppHash;
4796: while (my ($setting,$type) = each(%$Settings)) {
1.300 albertel 4797: my $basename = join('.','internal',$courseid,$prefix,$setting);
4798: my $envname = 'environment.'.$basename;
1.258 albertel 4799: if (exists($env{'form.'.$setting})) {
1.153 matthew 4800: # Save this value away
4801: if ($type eq 'scalar' &&
1.258 albertel 4802: (! exists($env{$envname}) ||
4803: $env{$envname} ne $env{'form.'.$setting})) {
4804: $SaveHash{$basename} = $env{'form.'.$setting};
4805: $AppHash{$envname} = $env{'form.'.$setting};
1.153 matthew 4806: } elsif ($type eq 'array') {
4807: my $stored_form;
1.258 albertel 4808: if (ref($env{'form.'.$setting})) {
1.153 matthew 4809: $stored_form = join(',',
4810: map {
4811: &Apache::lonnet::escape($_);
1.258 albertel 4812: } sort(@{$env{'form.'.$setting}}));
1.153 matthew 4813: } else {
4814: $stored_form =
1.258 albertel 4815: &Apache::lonnet::escape($env{'form.'.$setting});
1.153 matthew 4816: }
4817: # Determine if the array contents are the same.
1.258 albertel 4818: if ($stored_form ne $env{$envname}) {
1.153 matthew 4819: $SaveHash{$basename} = $stored_form;
4820: $AppHash{$envname} = $stored_form;
4821: }
4822: }
4823: }
4824: }
4825: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
1.300 albertel 4826: $udom,$uname);
1.153 matthew 4827: if ($put_result !~ /^(ok|delayed)/) {
4828: &Apache::lonnet::logthis('unable to save form parameters, '.
4829: 'got error:'.$put_result);
4830: }
4831: # Make sure these settings stick around in this session, too
4832: &Apache::lonnet::appenv(%AppHash);
4833: return;
4834: }
4835:
4836: sub restore_course_settings {
1.258 albertel 4837: my $courseid = $env{'request.course.id'};
1.153 matthew 4838: my ($prefix,$Settings) = @_;
4839: while (my ($setting,$type) = each(%$Settings)) {
1.258 albertel 4840: next if (exists($env{'form.'.$setting}));
1.300 albertel 4841: my $envname = 'environment.internal.'.$courseid.'.'.$prefix.
1.153 matthew 4842: '.'.$setting;
1.258 albertel 4843: if (exists($env{$envname})) {
1.153 matthew 4844: if ($type eq 'scalar') {
1.258 albertel 4845: $env{'form.'.$setting} = $env{$envname};
1.153 matthew 4846: } elsif ($type eq 'array') {
1.258 albertel 4847: $env{'form.'.$setting} = [
1.153 matthew 4848: map {
4849: &Apache::lonnet::unescape($_);
1.258 albertel 4850: } split(',',$env{$envname})
1.153 matthew 4851: ];
4852: }
4853: }
4854: }
1.127 matthew 4855: }
4856:
4857: ############################################################
4858: ############################################################
1.154 albertel 4859:
4860: sub propath {
4861: my ($udom,$uname)=@_;
4862: $udom=~s/\W//g;
4863: $uname=~s/\W//g;
4864: my $subdir=$uname.'__';
4865: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4866: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
4867: return $proname;
1.156 albertel 4868: }
4869:
4870: sub icon {
4871: my ($file)=@_;
1.168 albertel 4872: my $curfext = (split(/\./,$file))[-1];
4873: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
1.156 albertel 4874: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
1.168 albertel 4875: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
4876: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
4877: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4878: $curfext.".gif") {
4879: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4880: $curfext.".gif";
4881: }
4882: }
1.249 albertel 4883: return &lonhttpdurl($iconname);
1.154 albertel 4884: }
1.84 albertel 4885:
1.215 albertel 4886: sub lonhttpdurl {
4887: my ($url)=@_;
4888: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
4889: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
4890: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
4891: }
4892:
1.213 albertel 4893: sub connection_aborted {
4894: my ($r)=@_;
4895: $r->print(" ");$r->rflush();
4896: my $c = $r->connection;
4897: return $c->aborted();
4898: }
4899:
1.221 foxr 4900: # Escapes strings that may have embedded 's that will be put into
1.222 foxr 4901: # strings as 'strings'.
4902: sub escape_single {
1.221 foxr 4903: my ($input) = @_;
1.223 albertel 4904: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
1.221 foxr 4905: $input =~ s/\'/\\\'/g; # Esacpe the 's....
4906: return $input;
4907: }
1.223 albertel 4908:
1.222 foxr 4909: # Same as escape_single, but escape's "'s This
4910: # can be used for "strings"
4911: sub escape_double {
4912: my ($input) = @_;
4913: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
4914: $input =~ s/\"/\\\"/g; # Esacpe the "s....
4915: return $input;
4916: }
1.223 albertel 4917:
1.222 foxr 4918: # Escapes the last element of a full URL.
4919: sub escape_url {
4920: my ($url) = @_;
1.238 raeburn 4921: my @urlslices = split(/\//, $url,-1);
1.223 albertel 4922: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
4923: return join('/',@urlslices).'/'.$lastitem;
1.222 foxr 4924: }
1.41 ng 4925: =pod
4926:
4927: =back
4928:
1.112 bowersj2 4929: =cut
1.41 ng 4930:
1.112 bowersj2 4931: 1;
4932: __END__;
1.41 ng 4933:
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