Annotation of loncom/interface/loncommon.pm, revision 1.286
1.10 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # a pile of common routines
1.10 albertel 3: #
1.286 ! banghart 4: # $Id: loncommon.pm,v 1.285 2005/11/08 20:23:41 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);
1.99 www 61: use Apache::Constants qw(:common :http :methods);
1.82 www 62: use Apache::lonmenu();
1.117 www 63: use Apache::lonlocal;
1.139 matthew 64: use HTML::Entities;
1.117 www 65:
1.22 www 66: my $readit;
67:
1.157 matthew 68: ##
69: ## Global Variables
70: ##
1.46 matthew 71:
1.20 www 72: # ----------------------------------------------- Filetypes/Languages/Copyright
1.12 harris41 73: my %language;
1.124 www 74: my %supported_language;
1.12 harris41 75: my %cprtag;
1.192 taceyjo1 76: my %scprtag;
1.12 harris41 77: my %fe; my %fd;
1.41 ng 78: my %category_extensions;
1.12 harris41 79:
1.63 www 80: # ---------------------------------------------- Designs
81:
82: my %designhash;
83:
1.46 matthew 84: # ---------------------------------------------- Thesaurus variables
1.144 matthew 85: #
86: # %Keywords:
87: # A hash used by &keyword to determine if a word is considered a keyword.
88: # $thesaurus_db_file
89: # Scalar containing the full path to the thesaurus database.
1.46 matthew 90:
91: my %Keywords;
92: my $thesaurus_db_file;
93:
1.144 matthew 94: #
95: # Initialize values from language.tab, copyright.tab, filetypes.tab,
96: # thesaurus.tab, and filecategories.tab.
97: #
1.18 www 98: BEGIN {
1.46 matthew 99: # Variable initialization
100: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
101: #
1.22 www 102: unless ($readit) {
1.12 harris41 103: # ------------------------------------------------------------------- languages
104: {
1.158 raeburn 105: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
106: '/language.tab';
107: if ( open(my $fh,"<$langtabfile") ) {
108: while (<$fh>) {
109: next if /^\#/;
110: chomp;
111: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
112: $language{$key}=$val.' - '.$enc;
113: if ($sup) {
114: $supported_language{$key}=$sup;
115: }
116: }
117: close($fh);
118: }
1.12 harris41 119: }
120: # ------------------------------------------------------------------ copyrights
121: {
1.158 raeburn 122: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
123: '/copyright.tab';
124: if ( open (my $fh,"<$copyrightfile") ) {
125: while (<$fh>) {
126: next if /^\#/;
127: chomp;
128: my ($key,$val)=(split(/\s+/,$_,2));
129: $cprtag{$key}=$val;
130: }
131: close($fh);
132: }
1.12 harris41 133: }
1.192 taceyjo1 134: # ------------------------------------------------------------------ source copyrights
135: {
136: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
137: '/source_copyright.tab';
138: if ( open (my $fh,"<$sourcecopyrightfile") ) {
139: while (<$fh>) {
140: next if /^\#/;
141: chomp;
142: my ($key,$val)=(split(/\s+/,$_,2));
143: $scprtag{$key}=$val;
144: }
145: close($fh);
146: }
147: }
1.63 www 148:
149: # -------------------------------------------------------------- domain designs
150:
151: my $filename;
152: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
153: opendir(DIR,$designdir);
154: while ($filename=readdir(DIR)) {
1.271 albertel 155: if ($filename!~/\.tab$/) { next; }
1.63 www 156: my ($domain)=($filename=~/^(\w+)\./);
1.271 albertel 157: {
158: my $designfile = $designdir.'/'.$filename;
159: if ( open (my $fh,"<$designfile") ) {
160: while (<$fh>) {
161: next if /^\#/;
162: chomp;
163: my ($key,$val)=(split(/\=/,$_));
164: if ($val) { $designhash{$domain.'.'.$key}=$val; }
165: }
166: close($fh);
167: }
168: }
1.63 www 169:
170: }
171: closedir(DIR);
172:
173:
1.15 harris41 174: # ------------------------------------------------------------- file categories
175: {
1.158 raeburn 176: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
177: '/filecategories.tab';
178: if ( open (my $fh,"<$categoryfile") ) {
179: while (<$fh>) {
180: next if /^\#/;
181: chomp;
182: my ($extension,$category)=(split(/\s+/,$_,2));
183: push @{$category_extensions{lc($category)}},$extension;
184: }
185: close($fh);
186: }
187:
1.15 harris41 188: }
1.12 harris41 189: # ------------------------------------------------------------------ file types
190: {
1.158 raeburn 191: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
192: '/filetypes.tab';
193: if ( open (my $fh,"<$typesfile") ) {
1.16 harris41 194: while (<$fh>) {
1.158 raeburn 195: next if (/^\#/);
196: chomp;
197: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
198: if ($descr ne '') {
199: $fe{$ending}=lc($emb);
200: $fd{$ending}=$descr;
201: }
202: }
203: close($fh);
204: }
1.12 harris41 205: }
1.22 www 206: &Apache::lonnet::logthis(
1.46 matthew 207: "<font color=yellow>INFO: Read file types</font>");
1.22 www 208: $readit=1;
1.46 matthew 209: } # end of unless($readit)
1.32 matthew 210:
211: }
1.112 bowersj2 212:
1.42 matthew 213: ###############################################################
214: ## HTML and Javascript Helper Functions ##
215: ###############################################################
216:
217: =pod
218:
1.112 bowersj2 219: =head1 HTML and Javascript Functions
1.42 matthew 220:
1.112 bowersj2 221: =over 4
222:
223: =item * browser_and_searcher_javascript ()
224:
225: X<browsing, javascript>X<searching, javascript>Returns a string
226: containing javascript with two functions, C<openbrowser> and
227: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
228: tags.
1.42 matthew 229:
1.112 bowersj2 230: =item * openbrowser(formname,elementname,only,omit) [javascript]
1.42 matthew 231:
232: inputs: formname, elementname, only, omit
233:
234: formname and elementname indicate the name of the html form and name of
235: the element that the results of the browsing selection are to be placed in.
236:
237: Specifying 'only' will restrict the browser to displaying only files
1.185 www 238: with the given extension. Can be a comma separated list.
1.42 matthew 239:
240: Specifying 'omit' will restrict the browser to NOT displaying files
1.185 www 241: with the given extension. Can be a comma separated list.
1.42 matthew 242:
1.112 bowersj2 243: =item * opensearcher(formname, elementname) [javascript]
1.42 matthew 244:
245: Inputs: formname, elementname
246:
247: formname and elementname specify the name of the html form and the name
248: of the element the selection from the search results will be placed in.
249:
250: =cut
251:
252: sub browser_and_searcher_javascript {
1.199 albertel 253: my ($mode)=@_;
254: if (!defined($mode)) { $mode='edit'; }
1.170 www 255: my $resurl=&lastresurl();
1.42 matthew 256: return <<END;
1.219 albertel 257: // <!-- BEGIN LON-CAPA Internal
1.50 matthew 258: var editbrowser = null;
1.135 albertel 259: function openbrowser(formname,elementname,only,omit,titleelement) {
1.170 www 260: var url = '$resurl/?';
1.42 matthew 261: if (editbrowser == null) {
262: url += 'launch=1&';
263: }
264: url += 'catalogmode=interactive&';
1.199 albertel 265: url += 'mode=$mode&';
1.42 matthew 266: url += 'form=' + formname + '&';
267: if (only != null) {
268: url += 'only=' + only + '&';
1.217 albertel 269: } else {
270: url += 'only=&';
271: }
1.42 matthew 272: if (omit != null) {
273: url += 'omit=' + omit + '&';
1.217 albertel 274: } else {
275: url += 'omit=&';
276: }
1.135 albertel 277: if (titleelement != null) {
278: url += 'titleelement=' + titleelement + '&';
1.217 albertel 279: } else {
280: url += 'titleelement=&';
281: }
1.42 matthew 282: url += 'element=' + elementname + '';
283: var title = 'Browser';
1.217 albertel 284: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
1.42 matthew 285: options += ',width=700,height=600';
286: editbrowser = open(url,title,options,'1');
287: editbrowser.focus();
288: }
289: var editsearcher;
1.135 albertel 290: function opensearcher(formname,elementname,titleelement) {
1.42 matthew 291: var url = '/adm/searchcat?';
292: if (editsearcher == null) {
293: url += 'launch=1&';
294: }
295: url += 'catalogmode=interactive&';
1.199 albertel 296: url += 'mode=$mode&';
1.42 matthew 297: url += 'form=' + formname + '&';
1.135 albertel 298: if (titleelement != null) {
299: url += 'titleelement=' + titleelement + '&';
1.217 albertel 300: } else {
301: url += 'titleelement=&';
302: }
1.42 matthew 303: url += 'element=' + elementname + '';
304: var title = 'Search';
305: var options = 'scrollbars=1,resizable=1,menubar=0';
306: options += ',width=700,height=600';
307: editsearcher = open(url,title,options,'1');
308: editsearcher.focus();
309: }
1.219 albertel 310: // END LON-CAPA Internal -->
1.42 matthew 311: END
1.170 www 312: }
313:
314: sub lastresurl {
1.258 albertel 315: if ($env{'environment.lastresurl'}) {
316: return $env{'environment.lastresurl'}
1.170 www 317: } else {
318: return '/res';
319: }
320: }
321:
322: sub storeresurl {
323: my $resurl=&Apache::lonnet::clutter(shift);
324: unless ($resurl=~/^\/res/) { return 0; }
325: $resurl=~s/\/$//;
326: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
327: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
328: return 1;
1.42 matthew 329: }
330:
1.74 www 331: sub studentbrowser_javascript {
1.111 www 332: unless (
1.258 albertel 333: (($env{'request.course.id'}) &&
334: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})))
335: || ($env{'request.role'}=~/^(au|dc|su)/)
1.111 www 336: ) { return ''; }
1.74 www 337: return (<<'ENDSTDBRW');
338: <script type="text/javascript" language="Javascript" >
339: var stdeditbrowser;
1.111 www 340: function openstdbrowser(formname,uname,udom,roleflag) {
1.74 www 341: var url = '/adm/pickstudent?';
342: var filter;
343: eval('filter=document.'+formname+'.'+uname+'.value;');
344: if (filter != null) {
345: if (filter != '') {
346: url += 'filter='+filter+'&';
347: }
348: }
349: url += 'form=' + formname + '&unameelement='+uname+
350: '&udomelement='+udom;
1.111 www 351: if (roleflag) { url+="&roles=1"; }
1.102 www 352: var title = 'Student_Browser';
1.74 www 353: var options = 'scrollbars=1,resizable=1,menubar=0';
354: options += ',width=700,height=600';
355: stdeditbrowser = open(url,title,options,'1');
356: stdeditbrowser.focus();
357: }
358: </script>
359: ENDSTDBRW
360: }
1.42 matthew 361:
1.74 www 362: sub selectstudent_link {
1.111 www 363: my ($form,$unameele,$udomele)=@_;
1.258 albertel 364: if ($env{'request.course.id'}) {
365: unless (&Apache::lonnet::allowed('srm',$env{'request.course.id'})) {
1.111 www 366: return '';
367: }
368: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
1.119 www 369: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
1.74 www 370: }
1.258 albertel 371: if ($env{'request.role'}=~/^(au|dc|su)/) {
1.111 www 372: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
1.119 www 373: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
1.111 www 374: }
375: return '';
1.91 www 376: }
377:
378: sub coursebrowser_javascript {
1.234 raeburn 379: my ($domainfilter)=@_;
1.128 albertel 380: return (<<ENDSTDBRW);
1.91 www 381: <script type="text/javascript" language="Javascript" >
382: var stdeditbrowser;
1.234 raeburn 383: function opencrsbrowser(formname,uname,udom,desc,extra_element) {
1.91 www 384: var url = '/adm/pickcourse?';
385: var filter;
386: if (filter != null) {
387: if (filter != '') {
388: url += 'filter='+filter+'&';
389: }
390: }
1.128 albertel 391: var domainfilter='$domainfilter';
392: if (domainfilter != null) {
393: if (domainfilter != '') {
394: url += 'domainfilter='+domainfilter+'&';
395: }
396: }
1.91 www 397: url += 'form=' + formname + '&cnumelement='+uname+
1.187 albertel 398: '&cdomelement='+udom+
399: '&cnameelement='+desc;
1.234 raeburn 400: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
401: url += '&roleelement='+extra_element;
402: if (domainfilter == null || domainfilter == '') {
403: url += '&domainfilter='+extra_element;
404: }
1.230 raeburn 405: }
1.102 www 406: var title = 'Course_Browser';
1.91 www 407: var options = 'scrollbars=1,resizable=1,menubar=0';
408: options += ',width=700,height=600';
409: stdeditbrowser = open(url,title,options,'1');
410: stdeditbrowser.focus();
411: }
412: </script>
413: ENDSTDBRW
414: }
415:
416: sub selectcourse_link {
1.234 raeburn 417: my ($form,$unameele,$udomele,$desc,$extra_element)=@_;
1.91 www 418: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
1.234 raeburn 419: '","'.$udomele.'","'.$desc.'","'.$extra_element.'");'."'>".&mt('Select Course')."</a>";
1.74 www 420: }
1.42 matthew 421:
1.273 raeburn 422: sub check_uncheck_jscript {
423: my $jscript = <<"ENDSCRT";
424: function checkAll(field) {
425: if (field.length > 0) {
426: for (i = 0; i < field.length; i++) {
427: field[i].checked = true ;
428: }
429: } else {
430: field.checked = true
431: }
432: }
433:
434: function uncheckAll(field) {
435: if (field.length > 0) {
436: for (i = 0; i < field.length; i++) {
437: field[i].checked = false ;
438: } } else {
439: field.checked = false ;
440: }
441: }
442: ENDSCRT
443: return $jscript;
444: }
445:
446:
1.42 matthew 447: =pod
1.36 matthew 448:
1.112 bowersj2 449: =item * linked_select_forms(...)
1.36 matthew 450:
451: linked_select_forms returns a string containing a <script></script> block
452: and html for two <select> menus. The select menus will be linked in that
453: changing the value of the first menu will result in new values being placed
454: in the second menu. The values in the select menu will appear in alphabetical
455: order.
456:
457: linked_select_forms takes the following ordered inputs:
458:
459: =over 4
460:
1.112 bowersj2 461: =item * $formname, the name of the <form> tag
1.36 matthew 462:
1.112 bowersj2 463: =item * $middletext, the text which appears between the <select> tags
1.36 matthew 464:
1.112 bowersj2 465: =item * $firstdefault, the default value for the first menu
1.36 matthew 466:
1.112 bowersj2 467: =item * $firstselectname, the name of the first <select> tag
1.36 matthew 468:
1.112 bowersj2 469: =item * $secondselectname, the name of the second <select> tag
1.36 matthew 470:
1.112 bowersj2 471: =item * $hashref, a reference to a hash containing the data for the menus.
1.36 matthew 472:
1.41 ng 473: =back
474:
1.36 matthew 475: Below is an example of such a hash. Only the 'text', 'default', and
476: 'select2' keys must appear as stated. keys(%menu) are the possible
477: values for the first select menu. The text that coincides with the
1.41 ng 478: first menu value is given in $menu{$choice1}->{'text'}. The values
1.36 matthew 479: and text for the second menu are given in the hash pointed to by
480: $menu{$choice1}->{'select2'}.
481:
1.112 bowersj2 482: my %menu = ( A1 => { text =>"Choice A1" ,
483: default => "B3",
484: select2 => {
485: B1 => "Choice B1",
486: B2 => "Choice B2",
487: B3 => "Choice B3",
488: B4 => "Choice B4"
489: }
490: },
491: A2 => { text =>"Choice A2" ,
492: default => "C2",
493: select2 => {
494: C1 => "Choice C1",
495: C2 => "Choice C2",
496: C3 => "Choice C3"
497: }
498: },
499: A3 => { text =>"Choice A3" ,
500: default => "D6",
501: select2 => {
502: D1 => "Choice D1",
503: D2 => "Choice D2",
504: D3 => "Choice D3",
505: D4 => "Choice D4",
506: D5 => "Choice D5",
507: D6 => "Choice D6",
508: D7 => "Choice D7"
509: }
510: }
511: );
1.36 matthew 512:
513: =cut
514:
515: sub linked_select_forms {
516: my ($formname,
517: $middletext,
518: $firstdefault,
519: $firstselectname,
520: $secondselectname,
521: $hashref
522: ) = @_;
523: my $second = "document.$formname.$secondselectname";
524: my $first = "document.$formname.$firstselectname";
525: # output the javascript to do the changing
526: my $result = '';
1.219 albertel 527: $result.="<script type=\"text/javascript\">\n";
1.36 matthew 528: $result.="var select2data = new Object();\n";
529: $" = '","';
530: my $debug = '';
531: foreach my $s1 (sort(keys(%$hashref))) {
532: $result.="select2data.d_$s1 = new Object();\n";
533: $result.="select2data.d_$s1.def = new String('".
534: $hashref->{$s1}->{'default'}."');\n";
535: $result.="select2data.d_$s1.values = new Array(";
536: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
537: $result.="\"@s2values\");\n";
538: $result.="select2data.d_$s1.texts = new Array(";
539: my @s2texts;
540: foreach my $value (@s2values) {
541: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
542: }
543: $result.="\"@s2texts\");\n";
544: }
545: $"=' ';
546: $result.= <<"END";
547:
548: function select1_changed() {
549: // Determine new choice
550: var newvalue = "d_" + $first.value;
551: // update select2
552: var values = select2data[newvalue].values;
553: var texts = select2data[newvalue].texts;
554: var select2def = select2data[newvalue].def;
555: var i;
556: // out with the old
557: for (i = 0; i < $second.options.length; i++) {
558: $second.options[i] = null;
559: }
560: // in with the nuclear
561: for (i=0;i<values.length; i++) {
562: $second.options[i] = new Option(values[i]);
1.143 matthew 563: $second.options[i].value = values[i];
1.36 matthew 564: $second.options[i].text = texts[i];
565: if (values[i] == select2def) {
566: $second.options[i].selected = true;
567: }
568: }
569: }
570: </script>
571: END
572: # output the initial values for the selection lists
573: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
574: foreach my $value (sort(keys(%$hashref))) {
575: $result.=" <option value=\"$value\" ";
1.253 albertel 576: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
1.119 www 577: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
1.36 matthew 578: }
579: $result .= "</select>\n";
580: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
581: $result .= $middletext;
582: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
583: my $seconddefault = $hashref->{$firstdefault}->{'default'};
584: foreach my $value (sort(keys(%select2))) {
585: $result.=" <option value=\"$value\" ";
1.253 albertel 586: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
1.119 www 587: $result.=">".&mt($select2{$value})."</option>\n";
1.36 matthew 588: }
589: $result .= "</select>\n";
590: # return $debug;
591: return $result;
592: } # end of sub linked_select_forms {
593:
1.45 matthew 594: =pod
1.44 bowersj2 595:
1.112 bowersj2 596: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
1.44 bowersj2 597:
1.112 bowersj2 598: Returns a string corresponding to an HTML link to the given help
599: $topic, where $topic corresponds to the name of a .tex file in
600: /home/httpd/html/adm/help/tex, with underscores replaced by
601: spaces.
602:
603: $text will optionally be linked to the same topic, allowing you to
604: link text in addition to the graphic. If you do not want to link
605: text, but wish to specify one of the later parameters, pass an
606: empty string.
607:
608: $stayOnPage is a value that will be interpreted as a boolean. If true,
609: the link will not open a new window. If false, the link will open
610: a new window using Javascript. (Default is false.)
611:
612: $width and $height are optional numerical parameters that will
613: override the width and height of the popped up window, which may
614: be useful for certain help topics with big pictures included.
1.44 bowersj2 615:
616: =cut
617:
618: sub help_open_topic {
1.48 bowersj2 619: my ($topic, $text, $stayOnPage, $width, $height) = @_;
620: $text = "" if (not defined $text);
1.44 bowersj2 621: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 622: if ($env{'browser.interface'} eq 'textual' ||
623: $env{'environment.remote'} eq 'off' ) {
1.79 www 624: $stayOnPage=1;
625: }
1.44 bowersj2 626: $width = 350 if (not defined $width);
627: $height = 400 if (not defined $height);
628: my $filename = $topic;
629: $filename =~ s/ /_/g;
630:
1.48 bowersj2 631: my $template = "";
632: my $link;
1.159 www 633:
634: $topic=~s/\W/\_/g;
1.44 bowersj2 635:
636: if (!$stayOnPage)
637: {
1.72 bowersj2 638: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
1.44 bowersj2 639: }
640: else
641: {
1.48 bowersj2 642: $link = "/adm/help/${filename}.hlp";
643: }
644:
645: # Add the text
646: if ($text ne "")
647: {
1.77 www 648: $template .=
649: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
1.78 www 650: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.48 bowersj2 651: }
652:
653: # Add the graphic
1.179 matthew 654: my $title = &mt('Online Help');
1.215 albertel 655: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
1.48 bowersj2 656: $template .= <<"ENDTEMPLATE";
1.218 albertel 657: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
1.44 bowersj2 658: ENDTEMPLATE
1.78 www 659: if ($text ne '') { $template.='</td></tr></table>' };
1.44 bowersj2 660: return $template;
661:
1.106 bowersj2 662: }
663:
664: # This is a quicky function for Latex cheatsheet editing, since it
665: # appears in at least four places
666: sub helpLatexCheatsheet {
667: my $other = shift;
668: my $addOther = '';
669: if ($other) {
670: $addOther = Apache::loncommon::help_open_topic($other, shift,
671: undef, undef, 600) .
672: '</td><td>';
673: }
674: return '<table><tr><td>'.
675: $addOther .
676: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
677: undef,undef,600)
678: .'</td><td>'.
679: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
680: undef,undef,600)
681: .'</td></tr></table>';
1.172 www 682: }
683:
1.193 raeburn 684: sub help_open_menu {
685: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
686: $text = "" if (not defined $text);
687: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 688: if ($env{'browser.interface'} eq 'textual' ||
689: $env{'environment.remote'} eq 'off' ) {
1.193 raeburn 690: $stayOnPage=1;
691: }
692: $width = 620 if (not defined $width);
693: $height = 600 if (not defined $height);
694: my $link='';
1.201 raeburn 695: my $title = &mt('Get help');
1.193 raeburn 696: my $origurl = $ENV{'REQUEST_URI'};
1.227 albertel 697: $origurl=~s|^/~|/priv/|;
1.193 raeburn 698: my $timestamp = time;
699: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
700: $$_ = &Apache::lonnet::escape($$_);
701: }
1.195 albertel 702: if (!$stayOnPage) {
1.193 raeburn 703: $link = "javascript:helpMenu('open')";
1.195 albertel 704: } else {
1.193 raeburn 705: $link = "javascript:helpMenu('display')";
706: }
1.198 raeburn 707: 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 708: 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 709: my $template;
710: if ($text ne "") {
711: $template .=
1.265 albertel 712: "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
713: "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.196 albertel 714: }
1.261 albertel 715: my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
1.250 albertel 716: my $html=&Apache::lonxml::xmlbegin();
1.215 albertel 717: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
1.196 albertel 718: $template .= <<"ENDTEMPLATE";
1.219 albertel 719: <script type="text/javascript">
1.253 albertel 720: // <!-- BEGIN LON-CAPA Internal
721: // <![CDATA[
1.243 raeburn 722: function helpMenu(target) {
723: var caller = this;
724: if (target == 'open') {
725: var newWindow = null;
726: try {
1.262 albertel 727: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
1.243 raeburn 728: }
729: catch(error) {
730: writeHelp(caller);
731: return;
732: }
733: if (newWindow) {
734: caller = newWindow;
735: }
1.193 raeburn 736: }
1.243 raeburn 737: writeHelp(caller);
738: return;
739: }
740: function writeHelp(caller) {
1.264 www 741: caller.document.writeln('$html<head><title>LON-CAPA Help Menu</title><meta http-equiv="pragma" content="no-cache"></head>')
742: caller.document.writeln("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
743: caller.document.writeln("</html>")
1.243 raeburn 744: caller.document.close()
745: caller.focus()
1.193 raeburn 746: }
1.253 albertel 747: // ]]>
1.219 albertel 748: // END LON-CAPA Internal -->
1.193 raeburn 749: </script>
1.218 albertel 750: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
1.193 raeburn 751: ENDTEMPLATE
1.203 albertel 752: if ($component_help) {
753: if (!$text) {
754: $template=&help_open_topic($component_help,undef,$stayOnPage,
755: $width,$height).' '.$template;
756: } else {
757: my $help_text;
758: $help_text=&Apache::lonnet::unescape($topic);
759: $template='<table><tr><td>'.
760: &help_open_topic($component_help,$help_text,$stayOnPage,
761: $width,$height).'</td><td>'.$template.
762: '</td></tr></table>';
763: }
764: }
1.196 albertel 765: if ($text ne '') { $template.='</td></tr></table>' };
1.193 raeburn 766: return $template;
767: }
768:
1.172 www 769: sub help_open_bug {
770: my ($topic, $text, $stayOnPage, $width, $height) = @_;
1.258 albertel 771: unless ($env{'user.adv'}) { return ''; }
1.172 www 772: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
773: $text = "" if (not defined $text);
774: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 775: if ($env{'browser.interface'} eq 'textual' ||
776: $env{'environment.remote'} eq 'off' ) {
1.172 www 777: $stayOnPage=1;
778: }
1.184 albertel 779: $width = 600 if (not defined $width);
780: $height = 600 if (not defined $height);
1.172 www 781:
782: $topic=~s/\W+/\+/g;
783: my $link='';
784: my $template='';
785: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
786: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
787: if (!$stayOnPage)
788: {
789: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
790: }
791: else
792: {
793: $link = $url;
794: }
795: # Add the text
796: if ($text ne "")
797: {
798: $template .=
799: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
800: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
801: }
802:
803: # Add the graphic
1.179 matthew 804: my $title = &mt('Report a Bug');
1.215 albertel 805: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
1.172 www 806: $template .= <<"ENDTEMPLATE";
1.218 albertel 807: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
1.172 www 808: ENDTEMPLATE
809: if ($text ne '') { $template.='</td></tr></table>' };
810: return $template;
811:
812: }
813:
814: sub help_open_faq {
815: my ($topic, $text, $stayOnPage, $width, $height) = @_;
1.258 albertel 816: unless ($env{'user.adv'}) { return ''; }
1.172 www 817: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
818: $text = "" if (not defined $text);
819: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 820: if ($env{'browser.interface'} eq 'textual' ||
821: $env{'environment.remote'} eq 'off' ) {
1.172 www 822: $stayOnPage=1;
823: }
824: $width = 350 if (not defined $width);
825: $height = 400 if (not defined $height);
826:
827: $topic=~s/\W+/\+/g;
828: my $link='';
829: my $template='';
830: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
831: if (!$stayOnPage)
832: {
833: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
834: }
835: else
836: {
837: $link = $url;
838: }
839:
840: # Add the text
841: if ($text ne "")
842: {
843: $template .=
1.173 www 844: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
845: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.172 www 846: }
847:
848: # Add the graphic
1.179 matthew 849: my $title = &mt('View the FAQ');
1.215 albertel 850: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
1.172 www 851: $template .= <<"ENDTEMPLATE";
1.218 albertel 852: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
1.172 www 853: ENDTEMPLATE
854: if ($text ne '') { $template.='</td></tr></table>' };
855: return $template;
856:
1.44 bowersj2 857: }
1.37 matthew 858:
1.180 matthew 859: ###############################################################
860: ###############################################################
861:
1.45 matthew 862: =pod
863:
1.256 matthew 864: =item * change_content_javascript():
865:
866: This and the next function allow you to create small sections of an
867: otherwise static HTML page that you can update on the fly with
868: Javascript, even in Netscape 4.
869:
870: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
871: must be written to the HTML page once. It will prove the Javascript
872: function "change(name, content)". Calling the change function with the
873: name of the section
874: you want to update, matching the name passed to C<changable_area>, and
875: the new content you want to put in there, will put the content into
876: that area.
877:
878: B<Note>: Netscape 4 only reserves enough space for the changable area
879: to contain room for the original contents. You need to "make space"
880: for whatever changes you wish to make, and be B<sure> to check your
881: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
882: it's adequate for updating a one-line status display, but little more.
883: This script will set the space to 100% width, so you only need to
884: worry about height in Netscape 4.
885:
886: Modern browsers are much less limiting, and if you can commit to the
887: user not using Netscape 4, this feature may be used freely with
888: pretty much any HTML.
889:
890: =cut
891:
892: sub change_content_javascript {
893: # If we're on Netscape 4, we need to use Layer-based code
1.258 albertel 894: if ($env{'browser.type'} eq 'netscape' &&
895: $env{'browser.version'} =~ /^4\./) {
1.256 matthew 896: return (<<NETSCAPE4);
897: function change(name, content) {
898: doc = document.layers[name+"___escape"].layers[0].document;
899: doc.open();
900: doc.write(content);
901: doc.close();
902: }
903: NETSCAPE4
904: } else {
905: # Otherwise, we need to use semi-standards-compliant code
906: # (technically, "innerHTML" isn't standard but the equivalent
907: # is really scary, and every useful browser supports it
908: return (<<DOMBASED);
909: function change(name, content) {
910: element = document.getElementById(name);
911: element.innerHTML = content;
912: }
913: DOMBASED
914: }
915: }
916:
917: =pod
918:
919: =item * changable_area($name, $origContent):
920:
921: This provides a "changable area" that can be modified on the fly via
922: the Javascript code provided in C<change_content_javascript>. $name is
923: the name you will use to reference the area later; do not repeat the
924: same name on a given HTML page more then once. $origContent is what
925: the area will originally contain, which can be left blank.
926:
927: =cut
928:
929: sub changable_area {
930: my ($name, $origContent) = @_;
931:
1.258 albertel 932: if ($env{'browser.type'} eq 'netscape' &&
933: $env{'browser.version'} =~ /^4\./) {
1.256 matthew 934: # If this is netscape 4, we need to use the Layer tag
935: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
936: } else {
937: return "<span id='$name'>$origContent</span>";
938: }
939: }
940:
941: =pod
942:
943: =back
944:
945: =head1 Excel and CSV file utility routines
946:
947: =over 4
948:
949: =cut
950:
951: ###############################################################
952: ###############################################################
953:
954: =pod
955:
1.112 bowersj2 956: =item * csv_translate($text)
1.37 matthew 957:
1.185 www 958: Translate $text to allow it to be output as a 'comma separated values'
1.37 matthew 959: format.
960:
961: =cut
962:
1.180 matthew 963: ###############################################################
964: ###############################################################
1.37 matthew 965: sub csv_translate {
966: my $text = shift;
967: $text =~ s/\"/\"\"/g;
1.209 albertel 968: $text =~ s/\n/ /g;
1.37 matthew 969: return $text;
970: }
1.180 matthew 971:
972: ###############################################################
973: ###############################################################
974:
975: =pod
976:
977: =item * define_excel_formats
978:
979: Define some commonly used Excel cell formats.
980:
981: Currently supported formats:
982:
983: =over 4
984:
985: =item header
986:
987: =item bold
988:
989: =item h1
990:
991: =item h2
992:
993: =item h3
994:
1.256 matthew 995: =item h4
996:
997: =item i
998:
1.180 matthew 999: =item date
1000:
1001: =back
1002:
1003: Inputs: $workbook
1004:
1005: Returns: $format, a hash reference.
1006:
1007: =cut
1008:
1009: ###############################################################
1010: ###############################################################
1011: sub define_excel_formats {
1012: my ($workbook) = @_;
1013: my $format;
1014: $format->{'header'} = $workbook->add_format(bold => 1,
1015: bottom => 1,
1016: align => 'center');
1017: $format->{'bold'} = $workbook->add_format(bold=>1);
1018: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1019: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1020: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1.255 matthew 1021: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
1.246 matthew 1022: $format->{'i'} = $workbook->add_format(italic=>1);
1.180 matthew 1023: $format->{'date'} = $workbook->add_format(num_format=>
1.207 matthew 1024: 'mm/dd/yyyy hh:mm:ss');
1.180 matthew 1025: return $format;
1026: }
1027:
1028: ###############################################################
1029: ###############################################################
1.113 bowersj2 1030:
1031: =pod
1032:
1.256 matthew 1033: =item * create_workbook
1.255 matthew 1034:
1035: Create an Excel worksheet. If it fails, output message on the
1036: request object and return undefs.
1037:
1038: Inputs: Apache request object
1039:
1040: Returns (undef) on failure,
1041: Excel worksheet object, scalar with filename, and formats
1042: from &Apache::loncommon::define_excel_formats on success
1043:
1044: =cut
1045:
1046: ###############################################################
1047: ###############################################################
1048: sub create_workbook {
1049: my ($r) = @_;
1050: #
1051: # Create the excel spreadsheet
1052: my $filename = '/prtspool/'.
1.258 albertel 1053: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1.255 matthew 1054: time.'_'.rand(1000000000).'.xls';
1055: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1056: if (! defined($workbook)) {
1057: $r->log_error("Error creating excel spreadsheet $filename: $!");
1058: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1059: "This error has been logged. ".
1060: "Please alert your LON-CAPA administrator").
1061: '</p>');
1062: return (undef);
1063: }
1064: #
1065: $workbook->set_tempdir('/home/httpd/perl/tmp');
1066: #
1067: my $format = &Apache::loncommon::define_excel_formats($workbook);
1068: return ($workbook,$filename,$format);
1069: }
1070:
1071: ###############################################################
1072: ###############################################################
1073:
1074: =pod
1075:
1.256 matthew 1076: =item * create_text_file
1.113 bowersj2 1077:
1.256 matthew 1078: Create a file to write to and eventually make available to the usre.
1079: If file creation fails, outputs an error message on the request object and
1080: return undefs.
1.113 bowersj2 1081:
1.256 matthew 1082: Inputs: Apache request object, and file suffix
1.113 bowersj2 1083:
1.256 matthew 1084: Returns (undef) on failure,
1085: Filehandle and filename on success.
1.113 bowersj2 1086:
1087: =cut
1088:
1.256 matthew 1089: ###############################################################
1090: ###############################################################
1091: sub create_text_file {
1092: my ($r,$suffix) = @_;
1093: if (! defined($suffix)) { $suffix = 'txt'; };
1094: my $fh;
1095: my $filename = '/prtspool/'.
1.258 albertel 1096: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1.256 matthew 1097: time.'_'.rand(1000000000).'.'.$suffix;
1098: $fh = Apache::File->new('>/home/httpd'.$filename);
1099: if (! defined($fh)) {
1100: $r->log_error("Couldn't open $filename for output $!");
1101: $r->print("Problems occured in creating the output file. ".
1102: "This error has been logged. ".
1103: "Please alert your LON-CAPA administrator.");
1.113 bowersj2 1104: }
1.256 matthew 1105: return ($fh,$filename)
1.113 bowersj2 1106: }
1107:
1108:
1.256 matthew 1109: =pod
1.113 bowersj2 1110:
1111: =back
1112:
1113: =cut
1.37 matthew 1114:
1115: ###############################################################
1.33 matthew 1116: ## Home server <option> list generating code ##
1117: ###############################################################
1.35 matthew 1118:
1.45 matthew 1119: =pod
1120:
1.112 bowersj2 1121: =head1 Home Server option list generating code
1122:
1123: =over 4
1124:
1125: =item * get_domains()
1.35 matthew 1126:
1127: Returns an array containing each of the domains listed in the hosts.tab
1128: file.
1129:
1130: =cut
1131:
1132: #-------------------------------------------
1.34 matthew 1133: sub get_domains {
1134: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1135: my @domains;
1136: my %seen;
1137: foreach (sort values(%Apache::lonnet::hostdom)) {
1.169 www 1138: push (@domains,$_) unless $seen{$_}++;
1.34 matthew 1139: }
1140: return @domains;
1141: }
1.88 www 1142:
1.169 www 1143: # ------------------------------------------
1144:
1145: sub domain_select {
1146: my ($name,$value,$multiple)=@_;
1147: my %domains=map {
1148: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1149: } &get_domains;
1150: if ($multiple) {
1151: $domains{''}=&mt('Any domain');
1.191 matthew 1152: return &multiple_select_form($name,$value,4,%domains);
1.169 www 1153: } else {
1154: return &select_form($name,$value,%domains);
1155: }
1156: }
1157:
1.282 albertel 1158: #-------------------------------------------
1159:
1160: =pod
1161:
1162: =item * multiple_select_form($name,$value,$size,%hash)
1163:
1164: Returns a string containing a <select> element int multiple mode
1165:
1166:
1167: Args:
1168: $name - name of the <select> element
1169: $value - sclara or array ref of values that should already be selected
1170: $size - number of rows long the select element is
1.283 albertel 1171: $hash - the elements should be 'option' => 'shown text'
1.282 albertel 1172: (shown text should already have been &mt())
1.284 albertel 1173: $order - (optional) array ref of the order to show the elments in
1.283 albertel 1174:
1.282 albertel 1175: =cut
1176:
1177: #-------------------------------------------
1.169 www 1178: sub multiple_select_form {
1.284 albertel 1179: my ($name,$value,$size,$hash,$order)=@_;
1.169 www 1180: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1181: my $output='';
1.191 matthew 1182: if (! defined($size)) {
1183: $size = 4;
1.283 albertel 1184: if (scalar(keys(%$hash))<4) {
1185: $size = scalar(keys(%$hash));
1.191 matthew 1186: }
1187: }
1.169 www 1188: $output.="\n<select name='$name' size='$size' multiple='1'>";
1.286 ! banghart 1189: my @order = ref($order) ? @$order
1.284 albertel 1190: : sort(keys(%$hash));
1191: foreach my $key (@order) {
1192: $output.='<option value="'.$key.'" ';
1193: $output.='selected="selected" ' if ($selected{$key});
1194: $output.='>'.$hash->{$key}."</option>\n";
1.169 www 1195: }
1196: $output.="</select>\n";
1197: return $output;
1198: }
1199:
1.88 www 1200: #-------------------------------------------
1201:
1202: =pod
1203:
1.112 bowersj2 1204: =item * select_form($defdom,$name,%hash)
1.88 www 1205:
1206: Returns a string containing a <select name='$name' size='1'> form to
1207: allow a user to select options from a hash option_name => displayed text.
1208: See lonrights.pm for an example invocation and use.
1209:
1210: =cut
1211:
1212: #-------------------------------------------
1213: sub select_form {
1214: my ($def,$name,%hash) = @_;
1215: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1.128 albertel 1216: my @keys;
1217: if (exists($hash{'select_form_order'})) {
1218: @keys=@{$hash{'select_form_order'}};
1219: } else {
1220: @keys=sort(keys(%hash));
1221: }
1222: foreach (@keys) {
1.88 www 1223: $selectform.="<option value=\"$_\" ".
1.253 albertel 1224: ($_ eq $def ? 'selected="selected" ' : '').
1.119 www 1225: ">".&mt($hash{$_})."</option>\n";
1.88 www 1226: }
1227: $selectform.="</select>";
1228: return $selectform;
1229: }
1230:
1.167 www 1231: sub gradeleveldescription {
1232: my $gradelevel=shift;
1233: my %gradelevels=(0 => 'Not specified',
1234: 1 => 'Grade 1',
1235: 2 => 'Grade 2',
1236: 3 => 'Grade 3',
1237: 4 => 'Grade 4',
1238: 5 => 'Grade 5',
1239: 6 => 'Grade 6',
1240: 7 => 'Grade 7',
1241: 8 => 'Grade 8',
1242: 9 => 'Grade 9',
1243: 10 => 'Grade 10',
1244: 11 => 'Grade 11',
1245: 12 => 'Grade 12',
1246: 13 => 'Grade 13',
1247: 14 => '100 Level',
1248: 15 => '200 Level',
1249: 16 => '300 Level',
1250: 17 => '400 Level',
1251: 18 => 'Graduate Level');
1252: return &mt($gradelevels{$gradelevel});
1253: }
1254:
1.163 www 1255: sub select_level_form {
1256: my ($deflevel,$name)=@_;
1257: unless ($deflevel) { $deflevel=0; }
1.167 www 1258: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1259: for (my $i=0; $i<=18; $i++) {
1260: $selectform.="<option value=\"$i\" ".
1.253 albertel 1261: ($i==$deflevel ? 'selected="selected" ' : '').
1.167 www 1262: ">".&gradeleveldescription($i)."</option>\n";
1263: }
1264: $selectform.="</select>";
1265: return $selectform;
1.163 www 1266: }
1.167 www 1267:
1.35 matthew 1268: #-------------------------------------------
1269:
1.45 matthew 1270: =pod
1271:
1.112 bowersj2 1272: =item * select_dom_form($defdom,$name,$includeempty)
1.35 matthew 1273:
1274: Returns a string containing a <select name='$name' size='1'> form to
1275: allow a user to select the domain to preform an operation in.
1276: See loncreateuser.pm for an example invocation and use.
1277:
1.90 www 1278: If the $includeempty flag is set, it also includes an empty choice ("no domain
1279: selected");
1280:
1.35 matthew 1281: =cut
1282:
1283: #-------------------------------------------
1.34 matthew 1284: sub select_dom_form {
1.90 www 1285: my ($defdom,$name,$includeempty) = @_;
1.34 matthew 1286: my @domains = get_domains();
1.90 www 1287: if ($includeempty) { @domains=('',@domains); }
1.34 matthew 1288: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1289: foreach (@domains) {
1290: $selectdomain.="<option value=\"$_\" ".
1.253 albertel 1291: ($_ eq $defdom ? 'selected="selected" ' : '').
1.34 matthew 1292: ">$_</option>\n";
1293: }
1294: $selectdomain.="</select>";
1295: return $selectdomain;
1296: }
1297:
1.35 matthew 1298: #-------------------------------------------
1299:
1.45 matthew 1300: =pod
1301:
1.112 bowersj2 1302: =item * get_library_servers($domain)
1.35 matthew 1303:
1304: Returns a hash which contains keys like '103l3' and values like
1305: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1306: given $domain.
1307:
1308: =cut
1309:
1310: #-------------------------------------------
1.52 matthew 1311: sub get_library_servers {
1.33 matthew 1312: my $domain = shift;
1.52 matthew 1313: my %library_servers;
1.33 matthew 1314: foreach (keys(%Apache::lonnet::libserv)) {
1315: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1.52 matthew 1316: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1.33 matthew 1317: }
1318: }
1.52 matthew 1319: return %library_servers;
1.33 matthew 1320: }
1321:
1.35 matthew 1322: #-------------------------------------------
1323:
1.45 matthew 1324: =pod
1325:
1.112 bowersj2 1326: =item * home_server_option_list($domain)
1.35 matthew 1327:
1328: returns a string which contains an <option> list to be used in a
1329: <select> form input. See loncreateuser.pm for an example.
1330:
1331: =cut
1332:
1333: #-------------------------------------------
1.33 matthew 1334: sub home_server_option_list {
1335: my $domain = shift;
1.52 matthew 1336: my %servers = &get_library_servers($domain);
1.33 matthew 1337: my $result = '';
1338: foreach (sort keys(%servers)) {
1339: $result.=
1340: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1341: }
1342: return $result;
1343: }
1.112 bowersj2 1344:
1345: =pod
1346:
1347: =back
1348:
1349: =cut
1.87 matthew 1350:
1351: ###############################################################
1.112 bowersj2 1352: ## Decoding User Agent ##
1.87 matthew 1353: ###############################################################
1354:
1355: =pod
1356:
1.112 bowersj2 1357: =head1 Decoding the User Agent
1358:
1359: =over 4
1360:
1361: =item * &decode_user_agent()
1.87 matthew 1362:
1363: Inputs: $r
1364:
1365: Outputs:
1366:
1367: =over 4
1368:
1.112 bowersj2 1369: =item * $httpbrowser
1.87 matthew 1370:
1.112 bowersj2 1371: =item * $clientbrowser
1.87 matthew 1372:
1.112 bowersj2 1373: =item * $clientversion
1.87 matthew 1374:
1.112 bowersj2 1375: =item * $clientmathml
1.87 matthew 1376:
1.112 bowersj2 1377: =item * $clientunicode
1.87 matthew 1378:
1.112 bowersj2 1379: =item * $clientos
1.87 matthew 1380:
1381: =back
1382:
1.157 matthew 1383: =back
1384:
1.87 matthew 1385: =cut
1386:
1387: ###############################################################
1388: ###############################################################
1389: sub decode_user_agent {
1.247 albertel 1390: my ($r)=@_;
1.87 matthew 1391: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1392: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1393: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1.247 albertel 1394: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1.87 matthew 1395: my $clientbrowser='unknown';
1396: my $clientversion='0';
1397: my $clientmathml='';
1398: my $clientunicode='0';
1399: for (my $i=0;$i<=$#browsertype;$i++) {
1400: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1401: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1402: $clientbrowser=$bname;
1403: $httpbrowser=~/$vreg/i;
1404: $clientversion=$1;
1405: $clientmathml=($clientversion>=$minv);
1406: $clientunicode=($clientversion>=$univ);
1407: }
1408: }
1409: my $clientos='unknown';
1410: if (($httpbrowser=~/linux/i) ||
1411: ($httpbrowser=~/unix/i) ||
1412: ($httpbrowser=~/ux/i) ||
1413: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1414: if (($httpbrowser=~/vax/i) ||
1415: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1416: if ($httpbrowser=~/next/i) { $clientos='next'; }
1417: if (($httpbrowser=~/mac/i) ||
1418: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1419: if ($httpbrowser=~/win/i) { $clientos='win'; }
1420: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1421: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1422: $clientunicode,$clientos,);
1423: }
1424:
1.32 matthew 1425: ###############################################################
1426: ## Authentication changing form generation subroutines ##
1427: ###############################################################
1428: ##
1429: ## All of the authform_xxxxxxx subroutines take their inputs in a
1430: ## hash, and have reasonable default values.
1431: ##
1432: ## formname = the name given in the <form> tag.
1.35 matthew 1433: #-------------------------------------------
1434:
1.45 matthew 1435: =pod
1436:
1.112 bowersj2 1437: =head1 Authentication Routines
1438:
1439: =over 4
1440:
1441: =item * authform_xxxxxx
1.35 matthew 1442:
1443: The authform_xxxxxx subroutines provide javascript and html forms which
1444: handle some of the conveniences required for authentication forms.
1445: This is not an optimal method, but it works.
1446:
1447: See loncreateuser.pm for invocation and use examples.
1448:
1449: =over 4
1450:
1.112 bowersj2 1451: =item * authform_header
1.35 matthew 1452:
1.112 bowersj2 1453: =item * authform_authorwarning
1.35 matthew 1454:
1.112 bowersj2 1455: =item * authform_nochange
1.35 matthew 1456:
1.112 bowersj2 1457: =item * authform_kerberos
1.35 matthew 1458:
1.112 bowersj2 1459: =item * authform_internal
1.35 matthew 1460:
1.112 bowersj2 1461: =item * authform_filesystem
1.35 matthew 1462:
1463: =back
1464:
1.157 matthew 1465: =back
1466:
1.35 matthew 1467: =cut
1468:
1469: #-------------------------------------------
1.32 matthew 1470: sub authform_header{
1471: my %in = (
1472: formname => 'cu',
1.80 albertel 1473: kerb_def_dom => '',
1.32 matthew 1474: @_,
1475: );
1476: $in{'formname'} = 'document.' . $in{'formname'};
1477: my $result='';
1.80 albertel 1478:
1479: #---------------------------------------------- Code for upper case translation
1480: my $Javascript_toUpperCase;
1481: unless ($in{kerb_def_dom}) {
1482: $Javascript_toUpperCase =<<"END";
1483: switch (choice) {
1484: case 'krb': currentform.elements[choicearg].value =
1485: currentform.elements[choicearg].value.toUpperCase();
1486: break;
1487: default:
1488: }
1489: END
1490: } else {
1491: $Javascript_toUpperCase = "";
1492: }
1493:
1.165 raeburn 1494: my $radioval = "'nochange'";
1.174 matthew 1495: if (exists($in{'curr_authtype'}) &&
1496: defined($in{'curr_authtype'}) &&
1497: $in{'curr_authtype'} ne '') {
1498: $radioval = "'$in{'curr_authtype'}arg'";
1499: }
1.165 raeburn 1500: my $argfield = 'null';
1501: if ( grep/^mode$/,(keys %in) ) {
1502: if ($in{'mode'} eq 'modifycourse') {
1503: if ( grep/^curr_authtype$/,(keys %in) ) {
1504: $radioval = "'$in{'curr_authtype'}'";
1505: }
1506: if ( grep/^curr_autharg$/,(keys %in) ) {
1507: unless ($in{'curr_autharg'} eq '') {
1508: $argfield = "'$in{'curr_autharg'}'";
1509: }
1510: }
1511: }
1512: }
1513:
1.32 matthew 1514: $result.=<<"END";
1515: var current = new Object();
1.165 raeburn 1516: current.radiovalue = $radioval;
1517: current.argfield = $argfield;
1.32 matthew 1518:
1519: function changed_radio(choice,currentform) {
1520: var choicearg = choice + 'arg';
1521: // If a radio button in changed, we need to change the argfield
1522: if (current.radiovalue != choice) {
1523: current.radiovalue = choice;
1524: if (current.argfield != null) {
1525: currentform.elements[current.argfield].value = '';
1526: }
1527: if (choice == 'nochange') {
1528: current.argfield = null;
1529: } else {
1530: current.argfield = choicearg;
1531: switch(choice) {
1532: case 'krb':
1533: currentform.elements[current.argfield].value =
1534: "$in{'kerb_def_dom'}";
1535: break;
1536: default:
1537: break;
1538: }
1539: }
1540: }
1541: return;
1542: }
1.22 www 1543:
1.32 matthew 1544: function changed_text(choice,currentform) {
1545: var choicearg = choice + 'arg';
1546: if (currentform.elements[choicearg].value !='') {
1.80 albertel 1547: $Javascript_toUpperCase
1.32 matthew 1548: // clear old field
1549: if ((current.argfield != choicearg) && (current.argfield != null)) {
1550: currentform.elements[current.argfield].value = '';
1551: }
1552: current.argfield = choicearg;
1553: }
1554: set_auth_radio_buttons(choice,currentform);
1555: return;
1.20 www 1556: }
1.32 matthew 1557:
1558: function set_auth_radio_buttons(newvalue,currentform) {
1559: var i=0;
1560: while (i < currentform.login.length) {
1561: if (currentform.login[i].value == newvalue) { break; }
1562: i++;
1563: }
1564: if (i == currentform.login.length) {
1565: return;
1566: }
1567: current.radiovalue = newvalue;
1568: currentform.login[i].checked = true;
1569: return;
1570: }
1571: END
1572: return $result;
1573: }
1574:
1575: sub authform_authorwarning{
1576: my $result='';
1.144 matthew 1577: $result='<i>'.
1578: &mt('As a general rule, only authors or co-authors should be '.
1579: 'filesystem authenticated '.
1580: '(which allows access to the server filesystem).')."</i>\n";
1.32 matthew 1581: return $result;
1582: }
1583:
1584: sub authform_nochange{
1585: my %in = (
1586: formname => 'document.cu',
1587: kerb_def_dom => 'MSU.EDU',
1588: @_,
1589: );
1.281 albertel 1590: my $result = '<label>'.&mt('[_1] Do not change login data',
1.144 matthew 1591: '<input type="radio" name="login" value="nochange" '.
1592: 'checked="checked" onclick="'.
1.281 albertel 1593: "javascript:changed_radio('nochange',$in{'formname'});".'" />').
1594: '</label>';
1.32 matthew 1595: return $result;
1596: }
1597:
1598: sub authform_kerberos{
1599: my %in = (
1600: formname => 'document.cu',
1601: kerb_def_dom => 'MSU.EDU',
1.80 albertel 1602: kerb_def_auth => 'krb4',
1.32 matthew 1603: @_,
1604: );
1.165 raeburn 1605: my ($check4,$check5,$krbarg);
1.80 albertel 1606: if ($in{'kerb_def_auth'} eq 'krb5') {
1607: $check5 = " checked=\"on\"";
1608: } else {
1609: $check4 = " checked=\"on\"";
1610: }
1.165 raeburn 1611: $krbarg = $in{'kerb_def_dom'};
1612:
1613: my $krbcheck = "";
1614: if ( grep/^curr_authtype$/,(keys %in) ) {
1615: if ($in{'curr_authtype'} =~ m/^krb/) {
1616: $krbcheck = " checked=\"on\"";
1617: if ( grep/^curr_autharg$/,(keys %in) ) {
1618: $krbarg = $in{'curr_autharg'};
1619: }
1620: }
1621: }
1622:
1.144 matthew 1623: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1624: my $result .= &mt
1625: ('[_1] Kerberos authenticated with domain [_2] '.
1.281 albertel 1626: '[_3] Version 4 [_4] Version 5 [_5]',
1627: '<label><input type="radio" name="login" value="krb" '.
1.165 raeburn 1628: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1.281 albertel 1629: '</label><input type="text" size="10" name="krbarg" '.
1.165 raeburn 1630: 'value="'.$krbarg.'" '.
1.144 matthew 1631: 'onchange="'.$jscall.'" />',
1.281 albertel 1632: '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
1633: '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
1634: '</label>');
1.32 matthew 1635: return $result;
1636: }
1637:
1638: sub authform_internal{
1639: my %args = (
1640: formname => 'document.cu',
1641: kerb_def_dom => 'MSU.EDU',
1642: @_,
1643: );
1.165 raeburn 1644:
1645: my $intcheck = "";
1646: my $intarg = 'value=""';
1647: if ( grep/^curr_authtype$/,(keys %args) ) {
1648: if ($args{'curr_authtype'} eq 'int') {
1649: $intcheck = " checked=\"on\"";
1650: if ( grep/^curr_autharg$/,(keys %args) ) {
1651: $intarg = "value=\"$args{'curr_autharg'}\"";
1652: }
1653: }
1654: }
1655:
1.144 matthew 1656: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1657: my $result.=&mt
1658: ('[_1] Internally authenticated (with initial password [_2])',
1.281 albertel 1659: '<label><input type="radio" name="login" value="int" '.$intcheck.
1.165 raeburn 1660: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1661: '</label><input type="text" size="10" name="intarg" '.$intarg.
1.165 raeburn 1662: ' onchange="'.$jscall.'" />');
1.32 matthew 1663: return $result;
1664: }
1665:
1666: sub authform_local{
1667: my %in = (
1668: formname => 'document.cu',
1669: kerb_def_dom => 'MSU.EDU',
1670: @_,
1671: );
1.165 raeburn 1672:
1673: my $loccheck = "";
1674: my $locarg = 'value=""';
1675: if ( grep/^curr_authtype$/,(keys %in) ) {
1676: if ($in{'curr_authtype'} eq 'loc') {
1677: $loccheck = " checked=\"on\"";
1678: if ( grep/^curr_autharg$/,(keys %in) ) {
1679: $locarg = "value=\"$in{'curr_autharg'}\"";
1680: }
1681: }
1682: }
1683:
1.144 matthew 1684: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1.160 matthew 1685: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1.281 albertel 1686: '<label><input type="radio" name="login" value="loc" '.$loccheck.
1.165 raeburn 1687: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1688: '</label><input type="text" size="10" name="locarg" '.$locarg.
1.165 raeburn 1689: ' onchange="'.$jscall.'" />');
1.32 matthew 1690: return $result;
1691: }
1692:
1693: sub authform_filesystem{
1694: my %in = (
1695: formname => 'document.cu',
1696: kerb_def_dom => 'MSU.EDU',
1697: @_,
1698: );
1.144 matthew 1699: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1700: my $result.= &mt
1701: ('[_1] Filesystem Authenticated (with initial password [_2])',
1.281 albertel 1702: '<label><input type="radio" name="login" value="fsys" '.
1.144 matthew 1703: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1704: '</label><input type="text" size="10" name="fsysarg" value="" '.
1.144 matthew 1705: 'onchange="'.$jscall.'" />');
1.32 matthew 1706: return $result;
1707: }
1708:
1.80 albertel 1709: ###############################################################
1710: ## Get Authentication Defaults for Domain ##
1711: ###############################################################
1712:
1713: =pod
1714:
1.112 bowersj2 1715: =head1 Domains and Authentication
1716:
1717: Returns default authentication type and an associated argument as
1718: listed in file 'domain.tab'.
1719:
1720: =over 4
1721:
1722: =item * get_auth_defaults
1.80 albertel 1723:
1724: get_auth_defaults($target_domain) returns the default authentication
1725: type and an associated argument (initial password or a kerberos domain).
1726: These values are stored in lonTabs/domain.tab
1727:
1728: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1729:
1730: If target_domain is not found in domain.tab, returns nothing ('').
1731:
1732: =cut
1733:
1734: #-------------------------------------------
1735: sub get_auth_defaults {
1736: my $domain=shift;
1737: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1738: }
1739: ###############################################################
1740: ## End Get Authentication Defaults for Domain ##
1741: ###############################################################
1742:
1743: ###############################################################
1744: ## Get Kerberos Defaults for Domain ##
1745: ###############################################################
1746: ##
1747: ## Returns default kerberos version and an associated argument
1748: ## as listed in file domain.tab. If not listed, provides
1749: ## appropriate default domain and kerberos version.
1750: ##
1751: #-------------------------------------------
1752:
1753: =pod
1754:
1.112 bowersj2 1755: =item * get_kerberos_defaults
1.80 albertel 1756:
1757: get_kerberos_defaults($target_domain) returns the default kerberos
1758: version and domain. If not found in domain.tabs, it defaults to
1759: version 4 and the domain of the server.
1760:
1761: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1762:
1763: =cut
1764:
1765: #-------------------------------------------
1766: sub get_kerberos_defaults {
1767: my $domain=shift;
1768: my ($krbdef,$krbdefdom) =
1769: &Apache::loncommon::get_auth_defaults($domain);
1770: unless ($krbdef =~/^krb/ && $krbdefdom) {
1771: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1772: my $krbdefdom=$1;
1773: $krbdefdom=~tr/a-z/A-Z/;
1774: $krbdef = "krb4";
1775: }
1776: return ($krbdef,$krbdefdom);
1777: }
1.112 bowersj2 1778:
1779: =pod
1780:
1781: =back
1782:
1783: =cut
1.32 matthew 1784:
1.46 matthew 1785: ###############################################################
1786: ## Thesaurus Functions ##
1787: ###############################################################
1.20 www 1788:
1.46 matthew 1789: =pod
1.20 www 1790:
1.112 bowersj2 1791: =head1 Thesaurus Functions
1792:
1793: =over 4
1794:
1795: =item * initialize_keywords
1.46 matthew 1796:
1797: Initializes the package variable %Keywords if it is empty. Uses the
1798: package variable $thesaurus_db_file.
1799:
1800: =cut
1801:
1802: ###################################################
1803:
1804: sub initialize_keywords {
1805: return 1 if (scalar keys(%Keywords));
1806: # If we are here, %Keywords is empty, so fill it up
1807: # Make sure the file we need exists...
1808: if (! -e $thesaurus_db_file) {
1809: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1810: " failed because it does not exist");
1811: return 0;
1812: }
1813: # Set up the hash as a database
1814: my %thesaurus_db;
1815: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1816: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1817: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1818: $thesaurus_db_file);
1819: return 0;
1820: }
1821: # Get the average number of appearances of a word.
1822: my $avecount = $thesaurus_db{'average.count'};
1823: # Put keywords (those that appear > average) into %Keywords
1824: while (my ($word,$data)=each (%thesaurus_db)) {
1825: my ($count,undef) = split /:/,$data;
1826: $Keywords{$word}++ if ($count > $avecount);
1827: }
1828: untie %thesaurus_db;
1829: # Remove special values from %Keywords.
1830: foreach ('total.count','average.count') {
1831: delete($Keywords{$_}) if (exists($Keywords{$_}));
1832: }
1833: return 1;
1834: }
1835:
1836: ###################################################
1837:
1838: =pod
1839:
1.112 bowersj2 1840: =item * keyword($word)
1.46 matthew 1841:
1842: Returns true if $word is a keyword. A keyword is a word that appears more
1843: than the average number of times in the thesaurus database. Calls
1844: &initialize_keywords
1845:
1846: =cut
1847:
1848: ###################################################
1.20 www 1849:
1850: sub keyword {
1.46 matthew 1851: return if (!&initialize_keywords());
1852: my $word=lc(shift());
1853: $word=~s/\W//g;
1854: return exists($Keywords{$word});
1.20 www 1855: }
1.46 matthew 1856:
1857: ###############################################################
1858:
1859: =pod
1.20 www 1860:
1.112 bowersj2 1861: =item * get_related_words
1.46 matthew 1862:
1.160 matthew 1863: Look up a word in the thesaurus. Takes a scalar argument and returns
1.46 matthew 1864: an array of words. If the keyword is not in the thesaurus, an empty array
1865: will be returned. The order of the words returned is determined by the
1866: database which holds them.
1867:
1868: Uses global $thesaurus_db_file.
1869:
1870: =cut
1871:
1872: ###############################################################
1873: sub get_related_words {
1874: my $keyword = shift;
1875: my %thesaurus_db;
1876: if (! -e $thesaurus_db_file) {
1877: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1878: "failed because the file does not exist");
1879: return ();
1880: }
1881: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1882: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1883: return ();
1884: }
1885: my @Words=();
1886: if (exists($thesaurus_db{$keyword})) {
1887: $_ = $thesaurus_db{$keyword};
1888: (undef,@Words) = split/:/; # The first element is the number of times
1889: # the word appears. We do not need it now.
1890: for (my $i=0;$i<=$#Words;$i++) {
1891: ($Words[$i],undef)= split/\,/,$Words[$i];
1.20 www 1892: }
1893: }
1.46 matthew 1894: untie %thesaurus_db;
1895: return @Words;
1.14 harris41 1896: }
1.46 matthew 1897:
1.112 bowersj2 1898: =pod
1899:
1900: =back
1901:
1902: =cut
1.61 www 1903:
1904: # -------------------------------------------------------------- Plaintext name
1.81 albertel 1905: =pod
1906:
1.112 bowersj2 1907: =head1 User Name Functions
1908:
1909: =over 4
1910:
1.226 albertel 1911: =item * plainname($uname,$udom,$first)
1.81 albertel 1912:
1.112 bowersj2 1913: Takes a users logon name and returns it as a string in
1.226 albertel 1914: "first middle last generation" form
1915: if $first is set to 'lastname' then it returns it as
1916: 'lastname generation, firstname middlename' if their is a lastname
1.81 albertel 1917:
1918: =cut
1.61 www 1919:
1.81 albertel 1920: ###############################################################
1.61 www 1921: sub plainname {
1.226 albertel 1922: my ($uname,$udom,$first)=@_;
1.61 www 1923: my %names=&Apache::lonnet::get('environment',
1924: ['firstname','middlename','lastname','generation'],
1925: $udom,$uname);
1.226 albertel 1926: my $name=&Apache::lonnet::format_name($names{'firstname'},
1927: $names{'middlename'},
1928: $names{'lastname'},
1929: $names{'generation'},$first);
1930: $name=~s/^\s+//;
1.62 www 1931: $name=~s/\s+$//;
1932: $name=~s/\s+/ /g;
1.190 albertel 1933: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1.62 www 1934: return $name;
1.61 www 1935: }
1.66 www 1936:
1937: # -------------------------------------------------------------------- Nickname
1.81 albertel 1938: =pod
1939:
1.112 bowersj2 1940: =item * nickname($uname,$udom)
1.81 albertel 1941:
1942: Gets a users name and returns it as a string as
1943:
1944: ""nickname""
1.66 www 1945:
1.81 albertel 1946: if the user has a nickname or
1947:
1948: "first middle last generation"
1949:
1950: if the user does not
1951:
1952: =cut
1.66 www 1953:
1954: sub nickname {
1955: my ($uname,$udom)=@_;
1.212 albertel 1956: my %names;
1.258 albertel 1957: if ($uname eq $env{'user.name'} &&
1958: $udom eq $env{'user.domain'}) {
1959: %names=('nickname' => $env{'environment.nickname'} ,
1960: 'firstname' => $env{'environment.firstname'} ,
1961: 'middlename' => $env{'environment.middlename'},
1962: 'lastname' => $env{'environment.lastname'} ,
1963: 'generation' => $env{'environment.generation'});
1.212 albertel 1964: } else {
1965: %names=&Apache::lonnet::get('environment',
1966: ['nickname','firstname','middlename',
1967: 'lastname','generation'],$udom,$uname);
1968: }
1.68 albertel 1969: my $name=$names{'nickname'};
1.66 www 1970: if ($name) {
1971: $name='"'.$name.'"';
1972: } else {
1973: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1974: $names{'lastname'}.' '.$names{'generation'};
1975: $name=~s/\s+$//;
1976: $name=~s/\s+/ /g;
1977: }
1978: return $name;
1979: }
1980:
1.61 www 1981:
1982: # ------------------------------------------------------------------ Screenname
1.81 albertel 1983:
1984: =pod
1985:
1.112 bowersj2 1986: =item * screenname($uname,$udom)
1.81 albertel 1987:
1988: Gets a users screenname and returns it as a string
1989:
1990: =cut
1.61 www 1991:
1992: sub screenname {
1993: my ($uname,$udom)=@_;
1.258 albertel 1994: if ($uname eq $env{'user.name'} &&
1995: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
1.212 albertel 1996: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1.68 albertel 1997: return $names{'screenname'};
1.62 www 1998: }
1999:
1.212 albertel 2000:
1.62 www 2001: # ------------------------------------------------------------- Message Wrapper
2002:
2003: sub messagewrapper {
1.200 matthew 2004: my ($link,$username,$domain)=@_;
1.62 www 2005: return
1.200 matthew 2006: '<a href="/adm/email?compose=individual&'.
2007: 'recname='.$username.'&recdom='.$domain.'" '.
2008: 'title="'.&mt('Send message').'">'.$link.'</a>';
1.74 www 2009: }
2010: # --------------------------------------------------------------- Notes Wrapper
2011:
2012: sub noteswrapper {
2013: my ($link,$un,$do)=@_;
2014: return
2015: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1.62 www 2016: }
2017: # ------------------------------------------------------------- Aboutme Wrapper
2018:
2019: sub aboutmewrapper {
1.166 www 2020: my ($link,$username,$domain,$target)=@_;
1.205 www 2021: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1.200 matthew 2022: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1.62 www 2023: }
2024:
2025: # ------------------------------------------------------------ Syllabus Wrapper
2026:
2027:
2028: sub syllabuswrapper {
1.109 matthew 2029: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
2030: if ($fontcolor) {
2031: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
2032: }
1.208 matthew 2033: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1.61 www 2034: }
1.14 harris41 2035:
1.208 matthew 2036: sub track_student_link {
1.268 albertel 2037: my ($linktext,$sname,$sdom,$target,$start) = @_;
2038: my $link ="/adm/trackstudent?";
1.208 matthew 2039: my $title = 'View recent activity';
2040: if (defined($sname) && $sname !~ /^\s*$/ &&
2041: defined($sdom) && $sdom !~ /^\s*$/) {
1.268 albertel 2042: $link .= "selected_student=$sname:$sdom";
1.208 matthew 2043: $title .= ' of this student';
1.268 albertel 2044: }
1.208 matthew 2045: if (defined($target) && $target !~ /^\s*$/) {
2046: $target = qq{target="$target"};
2047: } else {
2048: $target = '';
2049: }
1.268 albertel 2050: if ($start) { $link.='&start='.$start; }
1.208 matthew 2051: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2052: }
2053:
1.112 bowersj2 2054: =pod
2055:
2056: =back
2057:
2058: =head1 Access .tab File Data
2059:
2060: =over 4
2061:
2062: =item * languageids()
2063:
2064: returns list of all language ids
2065:
2066: =cut
2067:
1.14 harris41 2068: sub languageids {
1.16 harris41 2069: return sort(keys(%language));
1.14 harris41 2070: }
2071:
1.112 bowersj2 2072: =pod
2073:
2074: =item * languagedescription()
2075:
2076: returns description of a specified language id
2077:
2078: =cut
2079:
1.14 harris41 2080: sub languagedescription {
1.125 www 2081: my $code=shift;
2082: return ($supported_language{$code}?'* ':'').
2083: $language{$code}.
1.126 www 2084: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1.145 www 2085: }
2086:
2087: sub plainlanguagedescription {
2088: my $code=shift;
2089: return $language{$code};
2090: }
2091:
2092: sub supportedlanguagecode {
2093: my $code=shift;
2094: return $supported_language{$code};
1.97 www 2095: }
2096:
1.112 bowersj2 2097: =pod
2098:
2099: =item * copyrightids()
2100:
2101: returns list of all copyrights
2102:
2103: =cut
2104:
2105: sub copyrightids {
2106: return sort(keys(%cprtag));
2107: }
2108:
2109: =pod
2110:
2111: =item * copyrightdescription()
2112:
2113: returns description of a specified copyright id
2114:
2115: =cut
2116:
2117: sub copyrightdescription {
1.166 www 2118: return &mt($cprtag{shift(@_)});
1.112 bowersj2 2119: }
1.197 matthew 2120:
2121: =pod
2122:
1.192 taceyjo1 2123: =item * source_copyrightids()
2124:
2125: returns list of all source copyrights
2126:
2127: =cut
2128:
2129: sub source_copyrightids {
2130: return sort(keys(%scprtag));
2131: }
2132:
2133: =pod
2134:
2135: =item * source_copyrightdescription()
2136:
2137: returns description of a specified source copyright id
2138:
2139: =cut
2140:
2141: sub source_copyrightdescription {
2142: return &mt($scprtag{shift(@_)});
2143: }
1.112 bowersj2 2144:
2145: =pod
2146:
2147: =item * filecategories()
2148:
2149: returns list of all file categories
2150:
2151: =cut
2152:
2153: sub filecategories {
2154: return sort(keys(%category_extensions));
2155: }
2156:
2157: =pod
2158:
2159: =item * filecategorytypes()
2160:
2161: returns list of file types belonging to a given file
2162: category
2163:
2164: =cut
2165:
2166: sub filecategorytypes {
2167: return @{$category_extensions{lc($_[0])}};
2168: }
2169:
2170: =pod
2171:
2172: =item * fileembstyle()
2173:
2174: returns embedding style for a specified file type
2175:
2176: =cut
2177:
2178: sub fileembstyle {
2179: return $fe{lc(shift(@_))};
1.169 www 2180: }
2181:
2182:
2183: sub filecategoryselect {
2184: my ($name,$value)=@_;
1.189 matthew 2185: return &select_form($value,$name,
1.169 www 2186: '' => &mt('Any category'),
2187: map { $_,$_ } sort(keys(%category_extensions)));
1.112 bowersj2 2188: }
2189:
2190: =pod
2191:
2192: =item * filedescription()
2193:
2194: returns description for a specified file type
2195:
2196: =cut
2197:
2198: sub filedescription {
1.188 matthew 2199: my $file_description = $fd{lc(shift())};
2200: $file_description =~ s:([\[\]]):~$1:g;
2201: return &mt($file_description);
1.112 bowersj2 2202: }
2203:
2204: =pod
2205:
2206: =item * filedescriptionex()
2207:
2208: returns description for a specified file type with
2209: extra formatting
2210:
2211: =cut
2212:
2213: sub filedescriptionex {
2214: my $ex=shift;
1.188 matthew 2215: my $file_description = $fd{lc($ex)};
2216: $file_description =~ s:([\[\]]):~$1:g;
2217: return '.'.$ex.' '.&mt($file_description);
1.112 bowersj2 2218: }
2219:
2220: # End of .tab access
2221: =pod
2222:
2223: =back
2224:
2225: =cut
2226:
2227: # ------------------------------------------------------------------ File Types
2228: sub fileextensions {
2229: return sort(keys(%fe));
2230: }
2231:
1.97 www 2232: # ----------------------------------------------------------- Display Languages
2233: # returns a hash with all desired display languages
2234: #
2235:
2236: sub display_languages {
2237: my %languages=();
1.118 www 2238: foreach (&preferred_languages()) {
2239: $languages{$_}=1;
1.97 www 2240: }
2241: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
1.258 albertel 2242: if ($env{'form.displaylanguage'}) {
2243: foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
1.97 www 2244: $languages{$_}=1;
2245: }
2246: }
2247: return %languages;
1.14 harris41 2248: }
2249:
1.117 www 2250: sub preferred_languages {
2251: my @languages=();
1.258 albertel 2252: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
1.117 www 2253: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
1.258 albertel 2254: $env{'course.'.$env{'request.course.id'}.'.languages'}));
1.177 www 2255: }
1.258 albertel 2256: if ($env{'environment.languages'}) {
2257: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
1.118 www 2258: }
1.162 www 2259: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2260: if ($browser) {
2261: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2262: }
1.258 albertel 2263: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
1.118 www 2264: @languages=(@languages,
1.258 albertel 2265: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
1.118 www 2266: }
1.258 albertel 2267: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
1.118 www 2268: @languages=(@languages,
1.258 albertel 2269: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
1.118 www 2270: }
2271: if ($Apache::lonnet::domain_lang_def{
2272: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2273: @languages=(@languages,
2274: $Apache::lonnet::domain_lang_def{
2275: $Apache::lonnet::perlvar{'lonDefDomain'}});
2276: }
2277: # turn "en-ca" into "en-ca,en"
2278: my @genlanguages;
2279: foreach (@languages) {
2280: unless ($_=~/\w/) { next; }
2281: push (@genlanguages,$_);
2282: if ($_=~/(\-|\_)/) {
2283: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2284: }
2285: }
2286: return @genlanguages;
1.117 www 2287: }
2288:
1.112 bowersj2 2289: ###############################################################
2290: ## Student Answer Attempts ##
2291: ###############################################################
2292:
2293: =pod
2294:
2295: =head1 Alternate Problem Views
2296:
2297: =over 4
2298:
2299: =item * get_previous_attempt($symb, $username, $domain, $course,
2300: $getattempt, $regexp, $gradesub)
2301:
2302: Return string with previous attempt on problem. Arguments:
2303:
2304: =over 4
2305:
2306: =item * $symb: Problem, including path
2307:
2308: =item * $username: username of the desired student
2309:
2310: =item * $domain: domain of the desired student
1.14 harris41 2311:
1.112 bowersj2 2312: =item * $course: Course ID
1.14 harris41 2313:
1.112 bowersj2 2314: =item * $getattempt: Leave blank for all attempts, otherwise put
2315: something
1.14 harris41 2316:
1.112 bowersj2 2317: =item * $regexp: if string matches this regexp, the string will be
2318: sent to $gradesub
1.14 harris41 2319:
1.112 bowersj2 2320: =item * $gradesub: routine that processes the string if it matches $regexp
1.14 harris41 2321:
1.112 bowersj2 2322: =back
1.14 harris41 2323:
1.112 bowersj2 2324: The output string is a table containing all desired attempts, if any.
1.16 harris41 2325:
1.112 bowersj2 2326: =cut
1.1 albertel 2327:
2328: sub get_previous_attempt {
1.43 ng 2329: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
1.1 albertel 2330: my $prevattempts='';
1.43 ng 2331: no strict 'refs';
1.1 albertel 2332: if ($symb) {
1.3 albertel 2333: my (%returnhash)=
2334: &Apache::lonnet::restore($symb,$course,$domain,$username);
1.1 albertel 2335: if ($returnhash{'version'}) {
2336: my %lasthash=();
2337: my $version;
2338: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.19 harris41 2339: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
1.1 albertel 2340: $lasthash{$_}=$returnhash{$version.':'.$_};
1.19 harris41 2341: }
1.1 albertel 2342: }
1.43 ng 2343: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
1.40 ng 2344: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
1.16 harris41 2345: foreach (sort(keys %lasthash)) {
1.31 albertel 2346: my ($ign,@parts) = split(/\./,$_);
1.41 ng 2347: if ($#parts > 0) {
1.31 albertel 2348: my $data=$parts[-1];
2349: pop(@parts);
1.40 ng 2350: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
1.31 albertel 2351: } else {
1.41 ng 2352: if ($#parts == 0) {
2353: $prevattempts.='<th>'.$parts[0].'</th>';
2354: } else {
2355: $prevattempts.='<th>'.$ign.'</th>';
2356: }
1.31 albertel 2357: }
1.16 harris41 2358: }
1.40 ng 2359: if ($getattempt eq '') {
2360: for ($version=1;$version<=$returnhash{'version'};$version++) {
2361: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2362: foreach (sort(keys %lasthash)) {
2363: my $value;
2364: if ($_ =~ /timestamp/) {
2365: $value=scalar(localtime($returnhash{$version.':'.$_}));
2366: } else {
2367: $value=$returnhash{$version.':'.$_};
2368: }
1.142 albertel 2369: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
1.40 ng 2370: }
2371: }
1.1 albertel 2372: }
1.40 ng 2373: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
1.16 harris41 2374: foreach (sort(keys %lasthash)) {
1.5 albertel 2375: my $value;
2376: if ($_ =~ /timestamp/) {
2377: $value=scalar(localtime($lasthash{$_}));
2378: } else {
2379: $value=$lasthash{$_};
2380: }
1.142 albertel 2381: $value=&Apache::lonnet::unescape($value);
1.49 ng 2382: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
1.40 ng 2383: $prevattempts.='<td>'.$value.' </td>';
1.16 harris41 2384: }
1.40 ng 2385: $prevattempts.='</tr></table></td></tr></table>';
1.1 albertel 2386: } else {
2387: $prevattempts='Nothing submitted - no attempts.';
2388: }
2389: } else {
2390: $prevattempts='No data.';
2391: }
1.10 albertel 2392: }
2393:
1.107 albertel 2394: sub relative_to_absolute {
2395: my ($url,$output)=@_;
2396: my $parser=HTML::TokeParser->new(\$output);
2397: my $token;
2398: my $thisdir=$url;
2399: my @rlinks=();
2400: while ($token=$parser->get_token) {
2401: if ($token->[0] eq 'S') {
2402: if ($token->[1] eq 'a') {
2403: if ($token->[2]->{'href'}) {
2404: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2405: }
2406: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2407: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2408: } elsif ($token->[1] eq 'base') {
2409: $thisdir=$token->[2]->{'href'};
2410: }
2411: }
2412: }
2413: $thisdir=~s-/[^/]*$--;
2414: foreach (@rlinks) {
2415: unless (($_=~/^http:\/\//i) ||
2416: ($_=~/^\//) ||
2417: ($_=~/^javascript:/i) ||
2418: ($_=~/^mailto:/i) ||
2419: ($_=~/^\#/)) {
2420: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2421: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2422: }
2423: }
2424: # -------------------------------------------------- Deal with Applet codebases
2425: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2426: return $output;
2427: }
2428:
1.112 bowersj2 2429: =pod
2430:
2431: =item * get_student_view
2432:
2433: show a snapshot of what student was looking at
2434:
2435: =cut
2436:
1.10 albertel 2437: sub get_student_view {
1.186 albertel 2438: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
1.114 www 2439: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
1.186 albertel 2440: my (%form);
1.10 albertel 2441: my @elements=('symb','courseid','domain','username');
2442: foreach my $element (@elements) {
1.186 albertel 2443: $form{'grade_'.$element}=eval '$'.$element #'
1.10 albertel 2444: }
1.186 albertel 2445: if (defined($moreenv)) {
2446: %form=(%form,%{$moreenv});
2447: }
1.236 albertel 2448: if (defined($target)) { $form{'grade_target'} = $target; }
1.107 albertel 2449: $feedurl=&Apache::lonnet::clutter($feedurl);
1.186 albertel 2450: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
1.11 albertel 2451: $userview=~s/\<body[^\>]*\>//gi;
2452: $userview=~s/\<\/body\>//gi;
2453: $userview=~s/\<html\>//gi;
2454: $userview=~s/\<\/html\>//gi;
2455: $userview=~s/\<head\>//gi;
2456: $userview=~s/\<\/head\>//gi;
2457: $userview=~s/action\s*\=/would_be_action\=/gi;
1.107 albertel 2458: $userview=&relative_to_absolute($feedurl,$userview);
1.11 albertel 2459: return $userview;
2460: }
2461:
1.112 bowersj2 2462: =pod
2463:
2464: =item * get_student_answers()
2465:
2466: show a snapshot of how student was answering problem
2467:
2468: =cut
2469:
1.11 albertel 2470: sub get_student_answers {
1.100 sakharuk 2471: my ($symb,$username,$domain,$courseid,%form) = @_;
1.114 www 2472: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
1.186 albertel 2473: my (%moreenv);
1.11 albertel 2474: my @elements=('symb','courseid','domain','username');
2475: foreach my $element (@elements) {
1.186 albertel 2476: $moreenv{'grade_'.$element}=eval '$'.$element #'
1.10 albertel 2477: }
1.186 albertel 2478: $moreenv{'grade_target'}='answer';
2479: %moreenv=(%form,%moreenv);
2480: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
1.10 albertel 2481: return $userview;
1.1 albertel 2482: }
1.116 albertel 2483:
2484: =pod
2485:
2486: =item * &submlink()
2487:
1.242 albertel 2488: Inputs: $text $uname $udom $symb $target
1.116 albertel 2489:
2490: Returns: A link to grades.pm such as to see the SUBM view of a student
2491:
2492: =cut
2493:
2494: ###############################################
2495: sub submlink {
1.242 albertel 2496: my ($text,$uname,$udom,$symb,$target)=@_;
1.116 albertel 2497: if (!($uname && $udom)) {
2498: (my $cursymb, my $courseid,$udom,$uname)=
2499: &Apache::lonxml::whichuser($symb);
2500: if (!$symb) { $symb=$cursymb; }
2501: }
1.254 matthew 2502: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
1.242 albertel 2503: $symb=&Apache::lonnet::escape($symb);
2504: if ($target) { $target="target=\"$target\""; }
2505: return '<a href="/adm/grades?&command=submission&'.
2506: 'symb='.$symb.'&student='.$uname.
2507: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2508: }
2509: ##############################################
2510:
2511: =pod
2512:
2513: =item * &pgrdlink()
2514:
2515: Inputs: $text $uname $udom $symb $target
2516:
2517: Returns: A link to grades.pm such as to see the PGRD view of a student
2518:
2519: =cut
2520:
2521: ###############################################
2522: sub pgrdlink {
2523: my $link=&submlink(@_);
2524: $link=~s/(&command=submission)/$1&showgrading=yes/;
2525: return $link;
2526: }
2527: ##############################################
2528:
2529: =pod
2530:
2531: =item * &pprmlink()
2532:
2533: Inputs: $text $uname $udom $symb $target
2534:
2535: Returns: A link to parmset.pm such as to see the PPRM view of a
1.283 albertel 2536: student and a specific resource
1.242 albertel 2537:
2538: =cut
2539:
2540: ###############################################
2541: sub pprmlink {
2542: my ($text,$uname,$udom,$symb,$target)=@_;
2543: if (!($uname && $udom)) {
2544: (my $cursymb, my $courseid,$udom,$uname)=
2545: &Apache::lonxml::whichuser($symb);
2546: if (!$symb) { $symb=$cursymb; }
2547: }
1.254 matthew 2548: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
1.242 albertel 2549: $symb=&Apache::lonnet::escape($symb);
2550: if ($target) { $target="target=\"$target\""; }
2551: return '<a href="/adm/parmset?&command=set&'.
2552: 'symb='.$symb.'&uname='.$uname.
2553: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
1.116 albertel 2554: }
2555: ##############################################
1.37 matthew 2556:
1.112 bowersj2 2557: =pod
2558:
2559: =back
2560:
2561: =cut
2562:
1.37 matthew 2563: ###############################################
1.51 www 2564:
2565:
2566: sub timehash {
2567: my @ltime=localtime(shift);
2568: return ( 'seconds' => $ltime[0],
2569: 'minutes' => $ltime[1],
2570: 'hours' => $ltime[2],
2571: 'day' => $ltime[3],
2572: 'month' => $ltime[4]+1,
2573: 'year' => $ltime[5]+1900,
2574: 'weekday' => $ltime[6],
2575: 'dayyear' => $ltime[7]+1,
2576: 'dlsav' => $ltime[8] );
2577: }
2578:
2579: sub maketime {
2580: my %th=@_;
2581: return POSIX::mktime(
2582: ($th{'seconds'},$th{'minutes'},$th{'hours'},
1.210 www 2583: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
1.70 www 2584: }
2585:
2586: #########################################
1.51 www 2587:
2588: sub findallcourses {
2589: my %courses=();
2590: my $now=time;
1.258 albertel 2591: foreach (keys %env) {
1.51 www 2592: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
1.258 albertel 2593: my ($starttime,$endtime)=$env{$_};
1.51 www 2594: my $active=1;
2595: if ($starttime) {
2596: if ($now<$starttime) { $active=0; }
2597: }
2598: if ($endtime) {
2599: if ($now>$endtime) { $active=0; }
2600: }
2601: if ($active) { $courses{$1.'_'.$2}=1; }
2602: }
2603: }
2604: return keys %courses;
2605: }
1.37 matthew 2606:
1.54 www 2607: ###############################################
1.60 matthew 2608: ###############################################
2609:
2610: =pod
2611:
1.112 bowersj2 2612: =head1 Domain Template Functions
2613:
2614: =over 4
2615:
2616: =item * &determinedomain()
1.60 matthew 2617:
2618: Inputs: $domain (usually will be undef)
2619:
1.63 www 2620: Returns: Determines which domain should be used for designs
1.60 matthew 2621:
2622: =cut
1.54 www 2623:
1.60 matthew 2624: ###############################################
1.63 www 2625: sub determinedomain {
2626: my $domain=shift;
2627: if (! $domain) {
1.60 matthew 2628: # Determine domain if we have not been given one
2629: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
1.258 albertel 2630: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2631: if ($env{'request.role.domain'}) {
2632: $domain=$env{'request.role.domain'};
1.60 matthew 2633: }
2634: }
1.63 www 2635: return $domain;
2636: }
2637: ###############################################
2638: =pod
2639:
1.112 bowersj2 2640: =item * &domainlogo()
1.63 www 2641:
2642: Inputs: $domain (usually will be undef)
2643:
2644: Returns: A link to a domain logo, if the domain logo exists.
2645: If the domain logo does not exist, a description of the domain.
2646:
2647: =cut
1.112 bowersj2 2648:
1.63 www 2649: ###############################################
2650: sub domainlogo {
2651: my $domain = &determinedomain(shift);
2652: # See if there is a logo
1.59 www 2653: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
1.215 albertel 2654: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2655: return '<img src="'.$logo.'" alt="'.$domain.'" />';
1.60 matthew 2656: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2657: return $Apache::lonnet::domaindescription{$domain};
1.59 www 2658: } else {
1.60 matthew 2659: return '';
1.59 www 2660: }
2661: }
1.63 www 2662: ##############################################
2663:
2664: =pod
2665:
1.112 bowersj2 2666: =item * &designparm()
1.63 www 2667:
2668: Inputs: $which parameter; $domain (usually will be undef)
2669:
2670: Returns: value of designparamter $which
2671:
2672: =cut
1.112 bowersj2 2673:
1.63 www 2674: ##############################################
2675: sub designparm {
2676: my ($which,$domain)=@_;
1.258 albertel 2677: if ($env{'browser.blackwhite'} eq 'on') {
1.110 www 2678: if ($which=~/\.(font|alink|vlink|link)$/) {
2679: return '#000000';
2680: }
2681: if ($which=~/\.(pgbg|sidebg)$/) {
2682: return '#FFFFFF';
2683: }
2684: if ($which=~/\.tabbg$/) {
2685: return '#CCCCCC';
2686: }
2687: }
1.258 albertel 2688: if ($env{'environment.color.'.$which}) {
2689: return $env{'environment.color.'.$which};
1.96 www 2690: }
1.63 www 2691: $domain=&determinedomain($domain);
2692: if ($designhash{$domain.'.'.$which}) {
2693: return $designhash{$domain.'.'.$which};
2694: } else {
2695: return $designhash{'default.'.$which};
2696: }
2697: }
1.59 www 2698:
1.60 matthew 2699: ###############################################
2700: ###############################################
2701:
2702: =pod
2703:
1.112 bowersj2 2704: =back
2705:
2706: =head1 HTTP Helpers
2707:
2708: =over 4
2709:
2710: =item * &bodytag()
1.60 matthew 2711:
2712: Returns a uniform header for LON-CAPA web pages.
2713:
2714: Inputs:
2715:
1.112 bowersj2 2716: =over 4
2717:
2718: =item * $title, A title to be displayed on the page.
2719:
2720: =item * $function, the current role (can be undef).
2721:
2722: =item * $addentries, extra parameters for the <body> tag.
2723:
2724: =item * $bodyonly, if defined, only return the <body> tag.
2725:
2726: =item * $domain, if defined, force a given domain.
2727:
2728: =item * $forcereg, if page should register as content page (relevant for
1.86 www 2729: text interface only)
1.60 matthew 2730:
1.112 bowersj2 2731: =back
2732:
1.60 matthew 2733: Returns: A uniform header for LON-CAPA web pages.
2734: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2735: If $bodyonly is undef or zero, an html string containing a <body> tag and
2736: other decorations will be returned.
2737:
2738: =cut
2739:
1.54 www 2740: sub bodytag {
1.272 raeburn 2741: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,$notopbar)=@_;
1.117 www 2742: $title=&mt($title);
1.183 matthew 2743: $function = &get_users_function() if (!$function);
1.63 www 2744: my $img=&designparm($function.'.img',$domain);
2745: my $pgbg=&designparm($function.'.pgbg',$domain);
2746: my $tabbg=&designparm($function.'.tabbg',$domain);
2747: my $font=&designparm($function.'.font',$domain);
2748: my $link=&designparm($function.'.link',$domain);
2749: my $alink=&designparm($function.'.alink',$domain);
2750: my $vlink=&designparm($function.'.vlink',$domain);
2751: my $sidebg=&designparm($function.'.sidebg',$domain);
1.110 www 2752: # Accessibility font enhance
2753: unless ($addentries) { $addentries=''; }
1.146 www 2754: my $addstyle='';
1.258 albertel 2755: if ($env{'browser.fontenhance'} eq 'on') {
1.146 www 2756: $addstyle=' font-size: x-large;';
1.110 www 2757: }
1.63 www 2758: # role and realm
1.55 www 2759: my ($role,$realm)
1.258 albertel 2760: =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
1.55 www 2761: # realm
1.258 albertel 2762: if ($env{'request.course.id'}) {
1.55 www 2763: $realm=
1.258 albertel 2764: $env{'course.'.$env{'request.course.id'}.'.description'};
1.54 www 2765: }
1.55 www 2766: unless ($realm) { $realm=' '; }
2767: # Set messages
1.60 matthew 2768: my $messages=&domainlogo($domain);
1.101 www 2769: # Port for miniserver
1.83 albertel 2770: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2771: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1.101 www 2772: # construct main body tag
1.60 matthew 2773: my $bodytag = <<END;
1.231 albertel 2774: <style type="text/css">
1.147 www 2775: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
1.146 www 2776: a:focus { color: red; background: yellow }
1.285 albertel 2777: table.thinborder { border-collapse: collapse; }
2778: table.thinborder tr th { border-style: solid; border-width: 1px}
2779: table.thinborder tr td { border-style: solid; border-width: 1px}
2780: .center { text-align: center; }
1.146 www 2781: </style>
1.54 www 2782: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
1.151 www 2783: style="margin-top: 0px;$addstyle" $addentries>
1.60 matthew 2784: END
1.269 albertel 2785: &Apache::lontexconvert::jsMath_reset();
1.258 albertel 2786: if ($env{'environment.texengine'} eq 'jsMath') {
1.269 albertel 2787: $bodytag.=&Apache::lontexconvert::jsMath_header();
1.252 albertel 2788: }
2789:
1.94 www 2790: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
1.150 matthew 2791: $lonhttpdPort.$img.'" alt="'.$function.'" />';
1.60 matthew 2792: if ($bodyonly) {
2793: return $bodytag;
1.258 albertel 2794: } elsif ($env{'browser.interface'} eq 'textual') {
1.95 www 2795: # Accessibility
1.224 raeburn 2796:
1.93 www 2797: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2798: $forcereg).
2799: '<h1>LON-CAPA: '.$title.'</h1>';
1.258 albertel 2800: } elsif ($env{'environment.remote'} eq 'off') {
1.95 www 2801: # No Remote
1.206 albertel 2802: my $roleinfo=(<<ENDROLE);
2803: <td bgcolor="$tabbg" align="right">
2804: <font size="2" face="Arial, Helvetica, sans-serif">
1.258 albertel 2805: $env{'environment.firstname'}
2806: $env{'environment.middlename'}
2807: $env{'environment.lastname'}
2808: $env{'environment.generation'}
1.206 albertel 2809: </font>
2810: <br />
2811: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2812: <br />
2813: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2814: </td>
2815: ENDROLE
1.224 raeburn 2816: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
1.229 albertel 2817: $font.'"><b>'.$title.'</b></font>';
1.224 raeburn 2818: if ($customtitle) {
2819: $titleinfo = $customtitle;
1.235 raeburn 2820: }
2821:
1.258 albertel 2822: if ($env{'request.state'} eq 'construct') {
1.229 albertel 2823: my ($uname,$thisdisfn)=
1.258 albertel 2824: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
1.229 albertel 2825: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2826: $formaction=~s/\/+/\//g;
1.237 raeburn 2827: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2828: my $parentpath = '';
1.241 raeburn 2829: my $lastitem = '';
2830: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
1.235 raeburn 2831: $parentpath = $1;
1.241 raeburn 2832: $lastitem = $2;
2833: } else {
2834: $lastitem = $thisdisfn;
1.235 raeburn 2835: }
2836: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2837: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2838: '<form name="dirs" method="post" action="'.$formaction
2839: .'" target="_top"><tt><b>'
1.241 raeburn 2840: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
1.235 raeburn 2841: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2842: .'</form>'
2843: .&Apache::lonmenu::constspaceform();
1.229 albertel 2844:
1.235 raeburn 2845: }
2846: $forcereg=1;
2847: }
2848: my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2849: 'cellspacing="3" cellpadding="3">'.
1.270 albertel 2850: '<tr><td bgcolor="'.$tabbg.'">'.
1.235 raeburn 2851: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
1.258 albertel 2852: if ($env{'request.state'} eq 'construct') {
1.272 raeburn 2853: if ($notopbar) {
2854: $bodytag .= $titletable;
2855: } else {
2856: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
2857: }
1.235 raeburn 2858: } else {
1.272 raeburn 2859: if ($notopbar) {
2860: $bodytag .= $titletable;
2861: } else {
2862: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
1.235 raeburn 2863: $titletable;
1.272 raeburn 2864: }
1.235 raeburn 2865: }
2866: return $bodytag;
1.94 www 2867: }
1.95 www 2868:
1.93 www 2869: #
1.95 www 2870: # Top frame rendering, Remote is up
1.93 www 2871: #
1.224 raeburn 2872: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2873: if ($customtitle) {
2874: $titleinfo = $customtitle;
2875: }
1.245 matthew 2876: #
2877: # Extra info if you are the DC
2878: my $dc_info = '';
1.258 albertel 2879: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2880: $env{'course.'.$env{'request.course.id'}.
1.245 matthew 2881: '.domain'}.'/'})) {
1.258 albertel 2882: my $cid = $env{'request.course.id'};
2883: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
1.245 matthew 2884: $dc_info = '('.$dc_info.')';
2885: }
2886: #
1.94 www 2887: return(<<ENDBODY);
1.60 matthew 2888: $bodytag
1.285 albertel 2889: <table class="thinborder" width="100%" cellspacing="0" border="0" cellpadding="0">
1.95 www 2890: <tr><td bgcolor="$sidebg">
1.94 www 2891: $upperleft</td>
1.95 www 2892: <td bgcolor="$sidebg" align="right">$messages </td>
1.55 www 2893: </tr>
1.54 www 2894: <tr>
1.55 www 2895: <td rowspan="3" bgcolor="$tabbg">
1.245 matthew 2896: $titleinfo $dc_info
1.257 matthew 2897: </td><td bgcolor="$tabbg" align="right">
1.146 www 2898: <font size="2" face="Arial, Helvetica, sans-serif">
1.258 albertel 2899: $env{'environment.firstname'}
2900: $env{'environment.middlename'}
2901: $env{'environment.lastname'}
2902: $env{'environment.generation'}
1.55 www 2903: </font>
1.54 www 2904: </td>
2905: </tr>
2906: <tr><td bgcolor="$tabbg" align="right">
1.146 www 2907: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
1.54 www 2908: </td></tr>
1.55 www 2909: <tr>
1.148 www 2910: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
1.202 albertel 2911: </table><br />
1.54 www 2912: ENDBODY
1.182 matthew 2913: }
2914:
2915: ###############################################
1.251 albertel 2916: ###############################################
2917:
2918: =pod
2919:
2920: =back
2921:
2922: =head1 HTTP Helpers
2923:
2924: =over 4
2925:
2926: =item * &endbodytag()
2927:
2928: Returns a uniform footer for LON-CAPA web pages.
2929:
2930: Inputs:
2931:
2932: =over 4
2933:
2934: =back
2935:
2936: Returns: A uniform footer for LON-CAPA web pages.
2937:
2938: =cut
2939:
2940: sub endbodytag {
2941: my $endbodytag='</body>';
1.269 albertel 2942: $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
1.251 albertel 2943: return $endbodytag;
2944: }
2945:
2946: ###############################################
1.182 matthew 2947:
2948: =pod
2949:
2950: =item get_users_function
2951:
2952: Used by &bodytag to determine the current users primary role.
2953: Returns either 'student','coordinator','admin', or 'author'.
2954:
2955: =cut
2956:
2957: ###############################################
2958: sub get_users_function {
2959: my $function = 'student';
1.258 albertel 2960: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
1.182 matthew 2961: $function='coordinator';
2962: }
1.258 albertel 2963: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
1.182 matthew 2964: $function='admin';
2965: }
1.258 albertel 2966: if (($env{'request.role'}=~/^(au|ca)/) ||
1.182 matthew 2967: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2968: $function='author';
2969: }
2970: return $function;
1.54 www 2971: }
1.99 www 2972:
2973: ###############################################
2974:
1.233 raeburn 2975: =pod
2976:
1.274 raeburn 2977: =item check_user_status
2978:
2979: Determines current status of supplied role for a
2980: specific user. Roles can be active, previous or future.
2981:
2982: Inputs:
2983: user's domain, user's username, course's domain,
2984: course's number, optional section/group.
2985:
2986: Outputs:
2987: role status: active, previous or future.
2988:
2989: =cut
2990:
2991: sub check_user_status {
2992: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
2993: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
2994: my @uroles = keys %userinfo;
2995: my $srchstr;
2996: my $active_chk = 'none';
2997: if (@uroles > 0) {
2998: if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
2999: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
3000: } else {
3001: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role; }
3002: if (grep/^$srchstr$/,@uroles) {
3003: my $role_end = 0;
3004: my $role_start = 0;
3005: $active_chk = 'active';
3006: if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
3007: $role_end = $2;
3008: if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
3009: $role_start = $3;
3010: }
3011: }
3012: if ($role_start > 0) {
3013: if (time < $role_start) {
3014: $active_chk = 'future';
3015: }
3016: }
3017: if ($role_end > 0) {
3018: if (time > $role_end) {
3019: $active_chk = 'previous';
3020: }
3021: }
3022: }
3023: }
3024: return $active_chk;
3025: }
3026:
3027: ###############################################
3028:
3029: =pod
3030:
1.233 raeburn 3031: =item get_sections
3032:
3033: Determines all the sections for a course including
3034: sections with students and sections containing other roles.
3035: Incoming parameters: domain, course number, reference to
3036: section hash (keys to be section/group IDs), reference to
3037: array containing roles for which sections should be gathered
3038: (optional). If the fourth argument is undefined, sections
3039: are gathered for any role.
3040:
3041: Returns number of sections.
3042:
3043: =cut
3044:
3045: ###############################################
3046: sub get_sections {
3047: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
1.240 albertel 3048: if (!($cdom && $cnum)) { return 0; }
1.233 raeburn 3049: my $numsections = 0;
1.240 albertel 3050:
3051: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
1.276 albertel 3052: my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
1.240 albertel 3053: my $sec_index = &Apache::loncoursedata::CL_SECTION();
3054: my $status_index = &Apache::loncoursedata::CL_STATUS();
3055: while (my ($student,$data) = each %$classlist) {
3056: my ($section,$status) = ($data->[$sec_index],
3057: $data->[$status_index]);
3058: unless ($section eq '-1' || $section =~ /^\s*$/) {
3059: if (!defined($$sectioncount{$section})) { $numsections++; }
3060: $$sectioncount{$section}++;
3061: }
3062: }
3063: }
3064: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
3065: foreach my $user (sort(keys(%courseroles))) {
3066: if ($user !~ /^(\w{2})/) { next; }
3067: my ($role) = ($user =~ /^(\w{2})/);
3068: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
3069: my $section;
3070: if ($role eq 'cr' &&
3071: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
3072: $section=$1;
3073: }
3074: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
3075: if (!defined($section) || $section eq '-1') { next; }
3076: if (!defined($$sectioncount{$section})) { $numsections++; }
3077: $$sectioncount{$section}++;
1.233 raeburn 3078: }
3079: return $numsections;
3080: }
3081:
1.274 raeburn 3082: ###############################################
3083:
1.275 raeburn 3084: =pod
3085:
3086: =item get_course_users
3087:
3088: Retrieves usernames:domains for users in the specified course
3089: with specific role(s), and access status.
3090:
3091: Incoming parameters:
1.277 albertel 3092: 1. course domain
3093: 2. course number
3094: 3. access status: users must have - either active,
1.275 raeburn 3095: previous, future, or all.
1.277 albertel 3096: 4. reference to array of permissible roles
3097: 5. reference to results object (hash of hashes).
1.275 raeburn 3098: Keys of top level hash are roles.
3099: Keys of inner hashes are username:domain, with
3100: values set to access type.
3101:
3102: =cut
3103:
3104: ###############################################
3105:
3106: sub get_course_users {
1.277 albertel 3107: my ($cdom,$cnum,$types,$roles,$users) = @_;
1.275 raeburn 3108: if (grep/^st$/,@{$roles}) {
1.277 albertel 3109: my $statusidx = &Apache::loncoursedata::CL_STATUS();
3110: my $startidx = &Apache::loncoursedata::CL_START();
3111: my $endidx = &Apache::loncoursedata::CL_END();
1.276 albertel 3112: my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
1.278 raeburn 3113: my $now = time;
1.277 albertel 3114: foreach my $student (keys(%{$classlist})) {
1.275 raeburn 3115: if (defined($$types{'active'})) {
3116: if ($$classlist{$student}[$statusidx] eq 'Active') {
3117: push(@{$$users{st}{$student}},'active');
3118: }
3119: }
3120: if (defined($$types{'previous'})) {
1.278 raeburn 3121: if ($$classlist{$student}[$endidx] <= $now) {
1.275 raeburn 3122: push(@{$$users{st}{$student}},'previous');
3123: }
3124: }
3125: if (defined($$types{'future'})) {
1.278 raeburn 3126: if (($$classlist{$student}[$startidx] > $now) && ($$classlist{$student}[$endidx] > $now) || ($$classlist{$student}[$endidx] == 0) || ($$classlist{$student}[$endidx] eq '')) {
1.275 raeburn 3127: push(@{$$users{st}{$student}},'future');
3128: }
3129: }
3130: }
3131: }
3132: if ((@{$roles} > 0) && (@{$roles} ne "st")) {
3133: my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
3134: foreach my $person (@coursepersonnel) {
3135: my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
3136: $user =~ s/:$//;
1.277 albertel 3137: if (($role) && (grep(/^$role$/,@{$roles}))) {
3138: my ($uname,$udom) = split(/:/,$user);
1.275 raeburn 3139: if ($uname ne '' && $udom ne '') {
3140: my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
1.277 albertel 3141: foreach my $type (keys(%{$types})) {
1.275 raeburn 3142: if ($status eq $type) {
3143: $$users{$role}{$user} = $type;
3144: }
3145: }
3146: }
3147: }
3148: }
1.279 raeburn 3149: if (grep/^ow$/,@{$roles}) {
3150: if ((defined($cdom)) && (defined($cnum))) {
3151: my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
3152: if ( defined($csettings{'internal.courseowner'}) ) {
3153: my $owner = $csettings{'internal.courseowner'};
3154: $$users{'ow'}{$owner.':'.$cdom} = 'any';
3155: }
3156: }
3157: }
1.275 raeburn 3158: }
3159: return;
3160: }
3161:
3162:
3163:
3164: ###############################################
1.233 raeburn 3165:
1.99 www 3166: sub get_posted_cgi {
3167: my $r=shift;
3168:
3169: my $buffer;
1.260 albertel 3170: if ($r->header_in('Content-length')) {
3171: $r->read($buffer,$r->header_in('Content-length'),0);
3172: }
1.99 www 3173: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
3174: my @pairs=split(/&/,$buffer);
3175: my $pair;
3176: foreach $pair (@pairs) {
3177: my ($name,$value) = split(/=/,$pair);
3178: $value =~ tr/+/ /;
3179: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3180: $name =~ tr/+/ /;
3181: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3182: &add_to_env("form.$name",$value);
3183: }
3184: } else {
3185: my $contentsep=$1;
3186: my @lines = split (/\n/,$buffer);
3187: my $name='';
3188: my $value='';
3189: my $fname='';
3190: my $fmime='';
3191: my $i;
3192: for ($i=0;$i<=$#lines;$i++) {
3193: if ($lines[$i]=~/^$contentsep/) {
3194: if ($name) {
3195: chomp($value);
3196: if ($fname) {
1.258 albertel 3197: $env{"form.$name.filename"}=$fname;
3198: $env{"form.$name.mimetype"}=$fmime;
1.99 www 3199: } else {
3200: $value=~s/\s+$//s;
3201: }
3202: &add_to_env("form.$name",$value);
3203: }
3204: if ($i<$#lines) {
3205: $i++;
3206: $lines[$i]=~
3207: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
3208: $name=$1;
3209: $value='';
3210: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
3211: $fname=$1;
3212: if
3213: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
3214: $fmime=$1;
3215: $i++;
3216: } else {
3217: $fmime='';
3218: }
3219: } else {
3220: $fname='';
3221: $fmime='';
3222: }
3223: $i++;
3224: }
3225: } else {
3226: $value.=$lines[$i]."\n";
3227: }
3228: }
3229: }
1.258 albertel 3230: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
1.99 www 3231: $r->method_number(M_GET);
3232: $r->method('GET');
3233: $r->headers_in->unset('Content-length');
3234: }
3235:
1.112 bowersj2 3236: =pod
3237:
3238: =item * get_unprocessed_cgi($query,$possible_names)
3239:
1.258 albertel 3240: Modify the %env hash to contain unprocessed CGI form parameters held in
1.112 bowersj2 3241: $query. The parameters listed in $possible_names (an array reference),
1.258 albertel 3242: will be set in $env{'form.name'} if they do not already exist.
1.112 bowersj2 3243:
3244: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
3245: $possible_names is an ref to an array of form element names. As an example:
3246: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
1.258 albertel 3247: will result in $env{'form.uname'} and $env{'form.udom'} being set.
1.112 bowersj2 3248:
3249: =cut
1.1 albertel 3250:
1.6 albertel 3251: sub get_unprocessed_cgi {
1.25 albertel 3252: my ($query,$possible_names)= @_;
1.26 matthew 3253: # $Apache::lonxml::debug=1;
1.16 harris41 3254: foreach (split(/&/,$query)) {
1.6 albertel 3255: my ($name, $value) = split(/=/,$_);
1.25 albertel 3256: $name = &Apache::lonnet::unescape($name);
3257: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
3258: $value =~ tr/+/ /;
3259: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.258 albertel 3260: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
1.25 albertel 3261: }
1.16 harris41 3262: }
1.6 albertel 3263: }
3264:
1.112 bowersj2 3265: =pod
3266:
3267: =item * cacheheader()
3268:
3269: returns cache-controlling header code
3270:
3271: =cut
3272:
1.7 albertel 3273: sub cacheheader {
1.258 albertel 3274: unless ($env{'request.method'} eq 'GET') { return ''; }
1.216 albertel 3275: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
3276: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
1.7 albertel 3277: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
3278: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
1.216 albertel 3279: return $output;
1.7 albertel 3280: }
3281:
1.112 bowersj2 3282: =pod
3283:
3284: =item * no_cache($r)
3285:
3286: specifies header code to not have cache
3287:
3288: =cut
3289:
1.9 albertel 3290: sub no_cache {
1.216 albertel 3291: my ($r) = @_;
3292: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
1.258 albertel 3293: $env{'request.method'} ne 'GET') { return ''; }
1.216 albertel 3294: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
3295: $r->no_cache(1);
3296: $r->header_out("Expires" => $date);
3297: $r->header_out("Pragma" => "no-cache");
1.123 www 3298: }
3299:
3300: sub content_type {
1.181 albertel 3301: my ($r,$type,$charset) = @_;
1.258 albertel 3302: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
1.181 albertel 3303: unless ($charset) {
3304: $charset=&Apache::lonlocal::current_encoding;
3305: }
3306: if ($charset) { $type.='; charset='.$charset; }
3307: if ($r) {
3308: $r->content_type($type);
3309: } else {
3310: print("Content-type: $type\n\n");
3311: }
1.9 albertel 3312: }
1.25 albertel 3313:
1.112 bowersj2 3314: =pod
3315:
3316: =item * add_to_env($name,$value)
3317:
1.258 albertel 3318: adds $name to the %env hash with value
1.112 bowersj2 3319: $value, if $name already exists, the entry is converted to an array
3320: reference and $value is added to the array.
3321:
3322: =cut
3323:
1.25 albertel 3324: sub add_to_env {
3325: my ($name,$value)=@_;
1.258 albertel 3326: if (defined($env{$name})) {
3327: if (ref($env{$name})) {
1.25 albertel 3328: #already have multiple values
1.258 albertel 3329: push(@{ $env{$name} },$value);
1.25 albertel 3330: } else {
3331: #first time seeing multiple values, convert hash entry to an arrayref
1.258 albertel 3332: my $first=$env{$name};
3333: undef($env{$name});
3334: push(@{ $env{$name} },$first,$value);
1.25 albertel 3335: }
3336: } else {
1.258 albertel 3337: $env{$name}=$value;
1.25 albertel 3338: }
1.31 albertel 3339: }
1.149 albertel 3340:
3341: =pod
3342:
3343: =item * get_env_multiple($name)
3344:
1.258 albertel 3345: gets $name from the %env hash, it seemlessly handles the cases where multiple
1.149 albertel 3346: values may be defined and end up as an array ref.
3347:
3348: returns an array of values
3349:
3350: =cut
3351:
3352: sub get_env_multiple {
3353: my ($name) = @_;
3354: my @values;
1.258 albertel 3355: if (defined($env{$name})) {
1.149 albertel 3356: # exists is it an array
1.258 albertel 3357: if (ref($env{$name})) {
3358: @values=@{ $env{$name} };
1.149 albertel 3359: } else {
1.258 albertel 3360: $values[0]=$env{$name};
1.149 albertel 3361: }
3362: }
3363: return(@values);
3364: }
3365:
1.31 albertel 3366:
1.41 ng 3367: =pod
1.45 matthew 3368:
3369: =back
1.41 ng 3370:
1.112 bowersj2 3371: =head1 CSV Upload/Handling functions
1.38 albertel 3372:
1.41 ng 3373: =over 4
3374:
1.112 bowersj2 3375: =item * upfile_store($r)
1.41 ng 3376:
3377: Store uploaded file, $r should be the HTTP Request object,
1.258 albertel 3378: needs $env{'form.upfile'}
1.41 ng 3379: returns $datatoken to be put into hidden field
3380:
3381: =cut
1.31 albertel 3382:
3383: sub upfile_store {
3384: my $r=shift;
1.258 albertel 3385: $env{'form.upfile'}=~s/\r/\n/gs;
3386: $env{'form.upfile'}=~s/\f/\n/gs;
3387: $env{'form.upfile'}=~s/\n+/\n/gs;
3388: $env{'form.upfile'}=~s/\n+$//gs;
1.31 albertel 3389:
1.258 albertel 3390: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
3391: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
1.31 albertel 3392: {
1.158 raeburn 3393: my $datafile = $r->dir_config('lonDaemons').
3394: '/tmp/'.$datatoken.'.tmp';
3395: if ( open(my $fh,">$datafile") ) {
1.258 albertel 3396: print $fh $env{'form.upfile'};
1.158 raeburn 3397: close($fh);
3398: }
1.31 albertel 3399: }
3400: return $datatoken;
3401: }
3402:
1.56 matthew 3403: =pod
3404:
1.112 bowersj2 3405: =item * load_tmp_file($r)
1.41 ng 3406:
3407: Load uploaded file from tmp, $r should be the HTTP Request object,
1.258 albertel 3408: needs $env{'form.datatoken'},
3409: sets $env{'form.upfile'} to the contents of the file
1.41 ng 3410:
3411: =cut
1.31 albertel 3412:
3413: sub load_tmp_file {
3414: my $r=shift;
3415: my @studentdata=();
3416: {
1.158 raeburn 3417: my $studentfile = $r->dir_config('lonDaemons').
1.258 albertel 3418: '/tmp/'.$env{'form.datatoken'}.'.tmp';
1.158 raeburn 3419: if ( open(my $fh,"<$studentfile") ) {
3420: @studentdata=<$fh>;
3421: close($fh);
3422: }
1.31 albertel 3423: }
1.258 albertel 3424: $env{'form.upfile'}=join('',@studentdata);
1.31 albertel 3425: }
3426:
1.56 matthew 3427: =pod
3428:
1.112 bowersj2 3429: =item * upfile_record_sep()
1.41 ng 3430:
3431: Separate uploaded file into records
3432: returns array of records,
1.258 albertel 3433: needs $env{'form.upfile'} and $env{'form.upfiletype'}
1.41 ng 3434:
3435: =cut
1.31 albertel 3436:
3437: sub upfile_record_sep {
1.258 albertel 3438: if ($env{'form.upfiletype'} eq 'xml') {
1.31 albertel 3439: } else {
1.248 albertel 3440: my @records;
1.258 albertel 3441: foreach my $line (split(/\n/,$env{'form.upfile'})) {
1.248 albertel 3442: if ($line=~/^\s*$/) { next; }
3443: push(@records,$line);
3444: }
3445: return @records;
1.31 albertel 3446: }
3447: }
3448:
1.56 matthew 3449: =pod
3450:
1.112 bowersj2 3451: =item * record_sep($record)
1.41 ng 3452:
1.258 albertel 3453: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
1.41 ng 3454:
3455: =cut
3456:
1.263 www 3457: sub takeleft {
3458: my $index=shift;
3459: return substr('0000'.$index,-4,4);
3460: }
3461:
1.31 albertel 3462: sub record_sep {
3463: my $record=shift;
3464: my %components=();
1.258 albertel 3465: if ($env{'form.upfiletype'} eq 'xml') {
3466: } elsif ($env{'form.upfiletype'} eq 'space') {
1.31 albertel 3467: my $i=0;
3468: foreach (split(/\s+/,$record)) {
3469: my $field=$_;
3470: $field=~s/^(\"|\')//;
3471: $field=~s/(\"|\')$//;
1.263 www 3472: $components{&takeleft($i)}=$field;
1.31 albertel 3473: $i++;
3474: }
1.258 albertel 3475: } elsif ($env{'form.upfiletype'} eq 'tab') {
1.31 albertel 3476: my $i=0;
1.171 matthew 3477: foreach (split(/\t/,$record)) {
1.31 albertel 3478: my $field=$_;
3479: $field=~s/^(\"|\')//;
3480: $field=~s/(\"|\')$//;
1.263 www 3481: $components{&takeleft($i)}=$field;
1.31 albertel 3482: $i++;
3483: }
3484: } else {
3485: my @allfields=split(/\,/,$record);
3486: my $i=0;
3487: my $j;
3488: for ($j=0;$j<=$#allfields;$j++) {
3489: my $field=$allfields[$j];
3490: if ($field=~/^\s*(\"|\')/) {
3491: my $delimiter=$1;
3492: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
3493: $j++;
3494: $field.=','.$allfields[$j];
3495: }
3496: $field=~s/^\s*$delimiter//;
3497: $field=~s/$delimiter\s*$//;
3498: }
1.263 www 3499: $components{&takeleft($i)}=$field;
1.31 albertel 3500: $i++;
3501: }
3502: }
3503: return %components;
3504: }
3505:
1.144 matthew 3506: ######################################################
3507: ######################################################
3508:
1.56 matthew 3509: =pod
3510:
1.112 bowersj2 3511: =item * upfile_select_html()
1.41 ng 3512:
1.144 matthew 3513: Return HTML code to select a file from the users machine and specify
3514: the file type.
1.41 ng 3515:
3516: =cut
3517:
1.144 matthew 3518: ######################################################
3519: ######################################################
1.31 albertel 3520: sub upfile_select_html {
1.144 matthew 3521: my %Types = (
3522: csv => &mt('CSV (comma separated values, spreadsheet)'),
3523: space => &mt('Space separated'),
3524: tab => &mt('Tabulator separated'),
3525: # xml => &mt('HTML/XML'),
3526: );
3527: my $Str = '<input type="file" name="upfile" size="50" />'.
3528: '<br />Type: <select name="upfiletype">';
3529: foreach my $type (sort(keys(%Types))) {
3530: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
3531: }
3532: $Str .= "</select>\n";
3533: return $Str;
1.31 albertel 3534: }
3535:
1.144 matthew 3536: ######################################################
3537: ######################################################
3538:
1.56 matthew 3539: =pod
3540:
1.112 bowersj2 3541: =item * csv_print_samples($r,$records)
1.41 ng 3542:
3543: Prints a table of sample values from each column uploaded $r is an
3544: Apache Request ref, $records is an arrayref from
3545: &Apache::loncommon::upfile_record_sep
3546:
3547: =cut
3548:
1.144 matthew 3549: ######################################################
3550: ######################################################
1.31 albertel 3551: sub csv_print_samples {
3552: my ($r,$records) = @_;
3553: my (%sone,%stwo,%sthree);
3554: %sone=&record_sep($$records[0]);
3555: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3556: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
1.144 matthew 3557: #
3558: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3559: foreach (sort({$a <=> $b} keys(%sone))) {
3560: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
1.31 albertel 3561: $r->print('</tr>');
3562: foreach my $hash (\%sone,\%stwo,\%sthree) {
3563: $r->print('<tr>');
3564: foreach (sort({$a <=> $b} keys(%sone))) {
3565: $r->print('<td>');
3566: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3567: $r->print('</td>');
3568: }
3569: $r->print('</tr>');
3570: }
3571: $r->print('</tr></table><br />'."\n");
3572: }
3573:
1.144 matthew 3574: ######################################################
3575: ######################################################
3576:
1.56 matthew 3577: =pod
3578:
1.112 bowersj2 3579: =item * csv_print_select_table($r,$records,$d)
1.41 ng 3580:
3581: Prints a table to create associations between values and table columns.
1.144 matthew 3582:
1.41 ng 3583: $r is an Apache Request ref,
3584: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
1.174 matthew 3585: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
1.41 ng 3586:
3587: =cut
3588:
1.144 matthew 3589: ######################################################
3590: ######################################################
1.31 albertel 3591: sub csv_print_select_table {
3592: my ($r,$records,$d) = @_;
3593: my $i=0;my %sone;
3594: %sone=&record_sep($$records[0]);
1.144 matthew 3595: $r->print(&mt('Associate columns with student attributes.')."\n".
3596: '<table border="2"><tr>'.
3597: '<th>'.&mt('Attribute').'</th>'.
3598: '<th>'.&mt('Column').'</th></tr>'."\n");
1.31 albertel 3599: foreach (@$d) {
1.174 matthew 3600: my ($value,$display,$defaultcol)=@{ $_ };
1.31 albertel 3601: $r->print('<tr><td>'.$display.'</td>');
3602:
3603: $r->print('<td><select name=f'.$i.
1.32 matthew 3604: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 3605: $r->print('<option value="none"></option>');
3606: foreach (sort({$a <=> $b} keys(%sone))) {
1.174 matthew 3607: $r->print('<option value="'.$_.'"'.
1.253 albertel 3608: ($_ eq $defaultcol ? ' selected="selected" ' : '').
1.174 matthew 3609: '>Column '.($_+1).'</option>');
1.31 albertel 3610: }
3611: $r->print('</select></td></tr>'."\n");
3612: $i++;
3613: }
3614: $i--;
3615: return $i;
3616: }
1.56 matthew 3617:
1.144 matthew 3618: ######################################################
3619: ######################################################
3620:
1.56 matthew 3621: =pod
1.31 albertel 3622:
1.112 bowersj2 3623: =item * csv_samples_select_table($r,$records,$d)
1.41 ng 3624:
3625: Prints a table of sample values from the upload and can make associate samples to internal names.
3626:
3627: $r is an Apache Request ref,
3628: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3629: $d is an array of 2 element arrays (internal name, displayed name)
3630:
3631: =cut
3632:
1.144 matthew 3633: ######################################################
3634: ######################################################
1.31 albertel 3635: sub csv_samples_select_table {
3636: my ($r,$records,$d) = @_;
3637: my %sone; my %stwo; my %sthree;
3638: my $i=0;
1.144 matthew 3639: #
3640: $r->print('<table border=2><tr><th>'.
3641: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
1.31 albertel 3642: %sone=&record_sep($$records[0]);
3643: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3644: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
1.144 matthew 3645: #
1.31 albertel 3646: foreach (sort keys %sone) {
1.144 matthew 3647: $r->print('<tr><td><select name="f'.$i.'"'.
1.32 matthew 3648: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 3649: foreach (@$d) {
1.174 matthew 3650: my ($value,$display,$defaultcol)=@{ $_ };
3651: $r->print('<option value="'.$value.'"'.
1.253 albertel 3652: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
1.174 matthew 3653: $display.'</option>');
1.31 albertel 3654: }
3655: $r->print('</select></td><td>');
1.263 www 3656: if (defined($sone{$_})) { $r->print($sone{$_}."<br />\n"); }
3657: if (defined($stwo{$_})) { $r->print($stwo{$_}."<br />\n"); }
3658: if (defined($sthree{$_})) { $r->print($sthree{$_}."<br />\n"); }
1.31 albertel 3659: $r->print('</td></tr>');
3660: $i++;
3661: }
3662: $i--;
3663: return($i);
1.115 matthew 3664: }
3665:
1.144 matthew 3666: ######################################################
3667: ######################################################
3668:
1.115 matthew 3669: =pod
3670:
3671: =item clean_excel_name($name)
3672:
3673: Returns a replacement for $name which does not contain any illegal characters.
3674:
3675: =cut
3676:
1.144 matthew 3677: ######################################################
3678: ######################################################
1.115 matthew 3679: sub clean_excel_name {
3680: my ($name) = @_;
3681: $name =~ s/[:\*\?\/\\]//g;
3682: if (length($name) > 31) {
3683: $name = substr($name,0,31);
3684: }
3685: return $name;
1.25 albertel 3686: }
1.84 albertel 3687:
1.85 albertel 3688: =pod
3689:
1.112 bowersj2 3690: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
1.85 albertel 3691:
3692: Returns either 1 or undef
3693:
3694: 1 if the part is to be hidden, undef if it is to be shown
3695:
3696: Arguments are:
3697:
3698: $id the id of the part to be checked
3699: $symb, optional the symb of the resource to check
3700: $udom, optional the domain of the user to check for
3701: $uname, optional the username of the user to check for
3702:
3703: =cut
1.84 albertel 3704:
3705: sub check_if_partid_hidden {
3706: my ($id,$symb,$udom,$uname) = @_;
1.133 albertel 3707: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
1.84 albertel 3708: $symb,$udom,$uname);
1.141 albertel 3709: my $truth=1;
3710: #if the string starts with !, then the list is the list to show not hide
3711: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
1.84 albertel 3712: my @hiddenlist=split(/,/,$hiddenparts);
3713: foreach my $checkid (@hiddenlist) {
1.141 albertel 3714: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
1.84 albertel 3715: }
1.141 albertel 3716: return !$truth;
1.84 albertel 3717: }
1.127 matthew 3718:
1.138 matthew 3719:
3720: ############################################################
3721: ############################################################
3722:
3723: =pod
3724:
1.157 matthew 3725: =back
3726:
1.138 matthew 3727: =head1 cgi-bin script and graphing routines
3728:
1.157 matthew 3729: =over 4
3730:
1.138 matthew 3731: =item get_cgi_id
3732:
3733: Inputs: none
3734:
3735: Returns an id which can be used to pass environment variables
3736: to various cgi-bin scripts. These environment variables will
3737: be removed from the users environment after a given time by
3738: the routine &Apache::lonnet::transfer_profile_to_env.
3739:
3740: =cut
3741:
3742: ############################################################
3743: ############################################################
1.152 albertel 3744: my $uniq=0;
1.136 matthew 3745: sub get_cgi_id {
1.154 albertel 3746: $uniq=($uniq+1)%100000;
1.280 albertel 3747: return (time.'_'.$$.'_'.$uniq);
1.136 matthew 3748: }
3749:
1.127 matthew 3750: ############################################################
3751: ############################################################
3752:
3753: =pod
3754:
1.134 matthew 3755: =item DrawBarGraph
1.127 matthew 3756:
1.138 matthew 3757: Facilitates the plotting of data in a (stacked) bar graph.
3758: Puts plot definition data into the users environment in order for
3759: graph.png to plot it. Returns an <img> tag for the plot.
3760: The bars on the plot are labeled '1','2',...,'n'.
3761:
3762: Inputs:
3763:
3764: =over 4
3765:
3766: =item $Title: string, the title of the plot
3767:
3768: =item $xlabel: string, text describing the X-axis of the plot
3769:
3770: =item $ylabel: string, text describing the Y-axis of the plot
3771:
3772: =item $Max: scalar, the maximum Y value to use in the plot
3773: If $Max is < any data point, the graph will not be rendered.
3774:
1.140 matthew 3775: =item $colors: array ref holding the colors to be used for the data sets when
1.138 matthew 3776: they are plotted. If undefined, default values will be used.
3777:
1.178 matthew 3778: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3779:
1.138 matthew 3780: =item @Values: An array of array references. Each array reference holds data
3781: to be plotted in a stacked bar chart.
3782:
1.239 matthew 3783: =item If the final element of @Values is a hash reference the key/value
3784: pairs will be added to the graph definition.
3785:
1.138 matthew 3786: =back
3787:
3788: Returns:
3789:
3790: An <img> tag which references graph.png and the appropriate identifying
3791: information for the plot.
3792:
1.127 matthew 3793: =cut
3794:
3795: ############################################################
3796: ############################################################
1.134 matthew 3797: sub DrawBarGraph {
1.178 matthew 3798: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
1.134 matthew 3799: #
3800: if (! defined($colors)) {
3801: $colors = ['#33ff00',
3802: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3803: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3804: ];
3805: }
1.228 matthew 3806: my $extra_settings = {};
3807: if (ref($Values[-1]) eq 'HASH') {
3808: $extra_settings = pop(@Values);
3809: }
1.127 matthew 3810: #
1.136 matthew 3811: my $identifier = &get_cgi_id();
3812: my $id = 'cgi.'.$identifier;
1.129 matthew 3813: if (! @Values || ref($Values[0]) ne 'ARRAY') {
1.127 matthew 3814: return '';
3815: }
1.225 matthew 3816: #
3817: my @Labels;
3818: if (defined($labels)) {
3819: @Labels = @$labels;
3820: } else {
3821: for (my $i=0;$i<@{$Values[0]};$i++) {
3822: push (@Labels,$i+1);
3823: }
3824: }
3825: #
1.129 matthew 3826: my $NumBars = scalar(@{$Values[0]});
1.225 matthew 3827: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
1.129 matthew 3828: my %ValuesHash;
3829: my $NumSets=1;
3830: foreach my $array (@Values) {
3831: next if (! ref($array));
1.136 matthew 3832: $ValuesHash{$id.'.data.'.$NumSets++} =
1.132 matthew 3833: join(',',@$array);
1.129 matthew 3834: }
1.127 matthew 3835: #
1.136 matthew 3836: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
1.225 matthew 3837: if ($NumBars < 3) {
3838: $width = 120+$NumBars*32;
1.220 matthew 3839: $xskip = 1;
1.225 matthew 3840: $bar_width = 30;
3841: } elsif ($NumBars < 5) {
3842: $width = 120+$NumBars*20;
3843: $xskip = 1;
3844: $bar_width = 20;
1.220 matthew 3845: } elsif ($NumBars < 10) {
1.136 matthew 3846: $width = 120+$NumBars*15;
3847: $xskip = 1;
3848: $bar_width = 15;
3849: } elsif ($NumBars <= 25) {
3850: $width = 120+$NumBars*11;
3851: $xskip = 5;
3852: $bar_width = 8;
3853: } elsif ($NumBars <= 50) {
3854: $width = 120+$NumBars*8;
3855: $xskip = 5;
3856: $bar_width = 4;
3857: } else {
3858: $width = 120+$NumBars*8;
3859: $xskip = 5;
3860: $bar_width = 4;
3861: }
3862: #
1.137 matthew 3863: $Max = 1 if ($Max < 1);
3864: if ( int($Max) < $Max ) {
3865: $Max++;
3866: $Max = int($Max);
3867: }
1.127 matthew 3868: $Title = '' if (! defined($Title));
3869: $xlabel = '' if (! defined($xlabel));
3870: $ylabel = '' if (! defined($ylabel));
1.136 matthew 3871: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3872: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3873: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
1.137 matthew 3874: $ValuesHash{$id.'.y_max_value'} = $Max;
1.136 matthew 3875: $ValuesHash{$id.'.NumBars'} = $NumBars;
3876: $ValuesHash{$id.'.NumSets'} = $NumSets;
3877: $ValuesHash{$id.'.PlotType'} = 'bar';
3878: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3879: $ValuesHash{$id.'.height'} = $height;
3880: $ValuesHash{$id.'.width'} = $width;
3881: $ValuesHash{$id.'.xskip'} = $xskip;
3882: $ValuesHash{$id.'.bar_width'} = $bar_width;
3883: $ValuesHash{$id.'.labels'} = join(',',@Labels);
1.127 matthew 3884: #
1.228 matthew 3885: # Deal with other parameters
3886: while (my ($key,$value) = each(%$extra_settings)) {
3887: $ValuesHash{$id.'.'.$key} = $value;
3888: }
3889: #
1.137 matthew 3890: &Apache::lonnet::appenv(%ValuesHash);
3891: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3892: }
3893:
3894: ############################################################
3895: ############################################################
3896:
3897: =pod
3898:
3899: =item DrawXYGraph
3900:
1.138 matthew 3901: Facilitates the plotting of data in an XY graph.
3902: Puts plot definition data into the users environment in order for
3903: graph.png to plot it. Returns an <img> tag for the plot.
3904:
3905: Inputs:
3906:
3907: =over 4
3908:
3909: =item $Title: string, the title of the plot
3910:
3911: =item $xlabel: string, text describing the X-axis of the plot
3912:
3913: =item $ylabel: string, text describing the Y-axis of the plot
3914:
3915: =item $Max: scalar, the maximum Y value to use in the plot
3916: If $Max is < any data point, the graph will not be rendered.
3917:
3918: =item $colors: Array ref containing the hex color codes for the data to be
3919: plotted in. If undefined, default values will be used.
3920:
3921: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3922:
3923: =item $Ydata: Array ref containing Array refs.
1.185 www 3924: Each of the contained arrays will be plotted as a separate curve.
1.138 matthew 3925:
3926: =item %Values: hash indicating or overriding any default values which are
3927: passed to graph.png.
3928: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3929:
3930: =back
3931:
3932: Returns:
3933:
3934: An <img> tag which references graph.png and the appropriate identifying
3935: information for the plot.
3936:
1.137 matthew 3937: =cut
3938:
3939: ############################################################
3940: ############################################################
3941: sub DrawXYGraph {
3942: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3943: #
3944: # Create the identifier for the graph
3945: my $identifier = &get_cgi_id();
3946: my $id = 'cgi.'.$identifier;
3947: #
3948: $Title = '' if (! defined($Title));
3949: $xlabel = '' if (! defined($xlabel));
3950: $ylabel = '' if (! defined($ylabel));
3951: my %ValuesHash =
3952: (
3953: $id.'.title' => &Apache::lonnet::escape($Title),
3954: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3955: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3956: $id.'.y_max_value'=> $Max,
3957: $id.'.labels' => join(',',@$Xlabels),
3958: $id.'.PlotType' => 'XY',
3959: );
3960: #
3961: if (defined($colors) && ref($colors) eq 'ARRAY') {
3962: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3963: }
3964: #
3965: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3966: return '';
3967: }
3968: my $NumSets=1;
1.138 matthew 3969: foreach my $array (@{$Ydata}){
1.137 matthew 3970: next if (! ref($array));
3971: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3972: }
1.138 matthew 3973: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
1.137 matthew 3974: #
3975: # Deal with other parameters
3976: while (my ($key,$value) = each(%Values)) {
3977: $ValuesHash{$id.'.'.$key} = $value;
1.127 matthew 3978: }
3979: #
1.136 matthew 3980: &Apache::lonnet::appenv(%ValuesHash);
3981: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3982: }
3983:
3984: ############################################################
3985: ############################################################
3986:
3987: =pod
3988:
1.138 matthew 3989: =item DrawXYYGraph
3990:
3991: Facilitates the plotting of data in an XY graph with two Y axes.
3992: Puts plot definition data into the users environment in order for
3993: graph.png to plot it. Returns an <img> tag for the plot.
3994:
3995: Inputs:
3996:
3997: =over 4
3998:
3999: =item $Title: string, the title of the plot
4000:
4001: =item $xlabel: string, text describing the X-axis of the plot
4002:
4003: =item $ylabel: string, text describing the Y-axis of the plot
4004:
4005: =item $colors: Array ref containing the hex color codes for the data to be
4006: plotted in. If undefined, default values will be used.
4007:
4008: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4009:
4010: =item $Ydata1: The first data set
4011:
4012: =item $Min1: The minimum value of the left Y-axis
4013:
4014: =item $Max1: The maximum value of the left Y-axis
4015:
4016: =item $Ydata2: The second data set
4017:
4018: =item $Min2: The minimum value of the right Y-axis
4019:
4020: =item $Max2: The maximum value of the left Y-axis
4021:
4022: =item %Values: hash indicating or overriding any default values which are
4023: passed to graph.png.
4024: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4025:
4026: =back
4027:
4028: Returns:
4029:
4030: An <img> tag which references graph.png and the appropriate identifying
4031: information for the plot.
1.136 matthew 4032:
4033: =cut
4034:
4035: ############################################################
4036: ############################################################
1.137 matthew 4037: sub DrawXYYGraph {
4038: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
4039: $Ydata2,$Min2,$Max2,%Values)=@_;
1.136 matthew 4040: #
4041: # Create the identifier for the graph
4042: my $identifier = &get_cgi_id();
4043: my $id = 'cgi.'.$identifier;
4044: #
4045: $Title = '' if (! defined($Title));
4046: $xlabel = '' if (! defined($xlabel));
4047: $ylabel = '' if (! defined($ylabel));
4048: my %ValuesHash =
4049: (
4050: $id.'.title' => &Apache::lonnet::escape($Title),
4051: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4052: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4053: $id.'.labels' => join(',',@$Xlabels),
4054: $id.'.PlotType' => 'XY',
4055: $id.'.NumSets' => 2,
1.137 matthew 4056: $id.'.two_axes' => 1,
4057: $id.'.y1_max_value' => $Max1,
4058: $id.'.y1_min_value' => $Min1,
4059: $id.'.y2_max_value' => $Max2,
4060: $id.'.y2_min_value' => $Min2,
1.136 matthew 4061: );
4062: #
1.137 matthew 4063: if (defined($colors) && ref($colors) eq 'ARRAY') {
4064: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4065: }
4066: #
4067: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
4068: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
1.136 matthew 4069: return '';
4070: }
4071: my $NumSets=1;
1.137 matthew 4072: foreach my $array ($Ydata1,$Ydata2){
1.136 matthew 4073: next if (! ref($array));
4074: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
1.137 matthew 4075: }
4076: #
4077: # Deal with other parameters
4078: while (my ($key,$value) = each(%Values)) {
4079: $ValuesHash{$id.'.'.$key} = $value;
1.136 matthew 4080: }
4081: #
4082: &Apache::lonnet::appenv(%ValuesHash);
1.130 albertel 4083: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
1.139 matthew 4084: }
4085:
4086: ############################################################
4087: ############################################################
4088:
4089: =pod
4090:
1.157 matthew 4091: =back
4092:
1.139 matthew 4093: =head1 Statistics helper routines?
4094:
4095: Bad place for them but what the hell.
4096:
1.157 matthew 4097: =over 4
4098:
1.139 matthew 4099: =item &chartlink
4100:
4101: Returns a link to the chart for a specific student.
4102:
4103: Inputs:
4104:
4105: =over 4
4106:
4107: =item $linktext: The text of the link
4108:
4109: =item $sname: The students username
4110:
4111: =item $sdomain: The students domain
4112:
4113: =back
4114:
1.157 matthew 4115: =back
4116:
1.139 matthew 4117: =cut
4118:
4119: ############################################################
4120: ############################################################
4121: sub chartlink {
4122: my ($linktext, $sname, $sdomain) = @_;
4123: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
1.219 albertel 4124: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
4125: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
1.139 matthew 4126: '">'.$linktext.'</a>';
1.153 matthew 4127: }
4128:
4129: #######################################################
4130: #######################################################
4131:
4132: =pod
4133:
4134: =head1 Course Environment Routines
1.157 matthew 4135:
4136: =over 4
1.153 matthew 4137:
4138: =item &restore_course_settings
4139:
4140: =item &store_course_settings
4141:
4142: Restores/Store indicated form parameters from the course environment.
4143: Will not overwrite existing values of the form parameters.
4144:
4145: Inputs:
4146: a scalar describing the data (e.g. 'chart', 'problem_analysis')
4147:
4148: a hash ref describing the data to be stored. For example:
4149:
4150: %Save_Parameters = ('Status' => 'scalar',
4151: 'chartoutputmode' => 'scalar',
4152: 'chartoutputdata' => 'scalar',
4153: 'Section' => 'array',
4154: 'StudentData' => 'array',
4155: 'Maps' => 'array');
4156:
4157: Returns: both routines return nothing
4158:
4159: =cut
4160:
4161: #######################################################
4162: #######################################################
4163: sub store_course_settings {
4164: # save to the environment
4165: # appenv the same items, just to be safe
1.258 albertel 4166: my $courseid = $env{'request.course.id'};
4167: my $coursedom = $env{'course.'.$courseid.'.domain'};
1.153 matthew 4168: my ($prefix,$Settings) = @_;
4169: my %SaveHash;
4170: my %AppHash;
4171: while (my ($setting,$type) = each(%$Settings)) {
1.176 albertel 4172: my $basename = 'internal.'.$prefix.'.'.$setting;
1.153 matthew 4173: my $envname = 'course.'.$courseid.'.'.$basename;
1.258 albertel 4174: if (exists($env{'form.'.$setting})) {
1.153 matthew 4175: # Save this value away
4176: if ($type eq 'scalar' &&
1.258 albertel 4177: (! exists($env{$envname}) ||
4178: $env{$envname} ne $env{'form.'.$setting})) {
4179: $SaveHash{$basename} = $env{'form.'.$setting};
4180: $AppHash{$envname} = $env{'form.'.$setting};
1.153 matthew 4181: } elsif ($type eq 'array') {
4182: my $stored_form;
1.258 albertel 4183: if (ref($env{'form.'.$setting})) {
1.153 matthew 4184: $stored_form = join(',',
4185: map {
4186: &Apache::lonnet::escape($_);
1.258 albertel 4187: } sort(@{$env{'form.'.$setting}}));
1.153 matthew 4188: } else {
4189: $stored_form =
1.258 albertel 4190: &Apache::lonnet::escape($env{'form.'.$setting});
1.153 matthew 4191: }
4192: # Determine if the array contents are the same.
1.258 albertel 4193: if ($stored_form ne $env{$envname}) {
1.153 matthew 4194: $SaveHash{$basename} = $stored_form;
4195: $AppHash{$envname} = $stored_form;
4196: }
4197: }
4198: }
4199: }
4200: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
4201: $coursedom,
1.258 albertel 4202: $env{'course.'.$courseid.'.num'});
1.153 matthew 4203: if ($put_result !~ /^(ok|delayed)/) {
4204: &Apache::lonnet::logthis('unable to save form parameters, '.
4205: 'got error:'.$put_result);
4206: }
4207: # Make sure these settings stick around in this session, too
4208: &Apache::lonnet::appenv(%AppHash);
4209: return;
4210: }
4211:
4212: sub restore_course_settings {
1.258 albertel 4213: my $courseid = $env{'request.course.id'};
1.153 matthew 4214: my ($prefix,$Settings) = @_;
4215: while (my ($setting,$type) = each(%$Settings)) {
1.258 albertel 4216: next if (exists($env{'form.'.$setting}));
1.176 albertel 4217: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
1.153 matthew 4218: '.'.$setting;
1.258 albertel 4219: if (exists($env{$envname})) {
1.153 matthew 4220: if ($type eq 'scalar') {
1.258 albertel 4221: $env{'form.'.$setting} = $env{$envname};
1.153 matthew 4222: } elsif ($type eq 'array') {
1.258 albertel 4223: $env{'form.'.$setting} = [
1.153 matthew 4224: map {
4225: &Apache::lonnet::unescape($_);
1.258 albertel 4226: } split(',',$env{$envname})
1.153 matthew 4227: ];
4228: }
4229: }
4230: }
1.127 matthew 4231: }
4232:
4233: ############################################################
4234: ############################################################
1.154 albertel 4235:
4236: sub propath {
4237: my ($udom,$uname)=@_;
4238: $udom=~s/\W//g;
4239: $uname=~s/\W//g;
4240: my $subdir=$uname.'__';
4241: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4242: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
4243: return $proname;
1.156 albertel 4244: }
4245:
4246: sub icon {
4247: my ($file)=@_;
1.168 albertel 4248: my $curfext = (split(/\./,$file))[-1];
4249: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
1.156 albertel 4250: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
1.168 albertel 4251: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
4252: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
4253: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4254: $curfext.".gif") {
4255: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4256: $curfext.".gif";
4257: }
4258: }
1.249 albertel 4259: return &lonhttpdurl($iconname);
1.154 albertel 4260: }
1.84 albertel 4261:
1.215 albertel 4262: sub lonhttpdurl {
4263: my ($url)=@_;
4264: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
4265: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
4266: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
4267: }
4268:
1.213 albertel 4269: sub connection_aborted {
4270: my ($r)=@_;
4271: $r->print(" ");$r->rflush();
4272: my $c = $r->connection;
4273: return $c->aborted();
4274: }
4275:
1.221 foxr 4276: # Escapes strings that may have embedded 's that will be put into
1.222 foxr 4277: # strings as 'strings'.
4278: sub escape_single {
1.221 foxr 4279: my ($input) = @_;
1.223 albertel 4280: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
1.221 foxr 4281: $input =~ s/\'/\\\'/g; # Esacpe the 's....
4282: return $input;
4283: }
1.223 albertel 4284:
1.222 foxr 4285: # Same as escape_single, but escape's "'s This
4286: # can be used for "strings"
4287: sub escape_double {
4288: my ($input) = @_;
4289: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
4290: $input =~ s/\"/\\\"/g; # Esacpe the "s....
4291: return $input;
4292: }
1.223 albertel 4293:
1.222 foxr 4294: # Escapes the last element of a full URL.
4295: sub escape_url {
4296: my ($url) = @_;
1.238 raeburn 4297: my @urlslices = split(/\//, $url,-1);
1.223 albertel 4298: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
4299: return join('/',@urlslices).'/'.$lastitem;
1.222 foxr 4300: }
1.41 ng 4301: =pod
4302:
4303: =back
4304:
1.112 bowersj2 4305: =cut
1.41 ng 4306:
1.112 bowersj2 4307: 1;
4308: __END__;
1.41 ng 4309:
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