Annotation of loncom/interface/loncommon.pm, revision 1.332
1.10 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # a pile of common routines
1.10 albertel 3: #
1.332 ! albertel 4: # $Id: loncommon.pm,v 1.331 2006/04/11 20:00:44 albertel Exp $
1.10 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.1 albertel 28:
29: # Makes a table out of the previous attempts
1.2 albertel 30: # Inputs result_from_symbread, user, domain, course_id
1.16 harris41 31: # Reads in non-network-related .tab files
1.1 albertel 32:
1.35 matthew 33: # POD header:
34:
1.45 matthew 35: =pod
36:
1.35 matthew 37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
1.112 bowersj2 43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
1.35 matthew 45:
1.112 bowersj2 46: =head1 OVERVIEW
1.35 matthew 47:
1.112 bowersj2 48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
1.35 matthew 50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
1.1 albertel 55: package Apache::loncommon;
56:
57: use strict;
1.258 albertel 58: use Apache::lonnet;
1.46 matthew 59: use GDBM_File;
1.51 www 60: use POSIX qw(strftime mktime);
1.82 www 61: use Apache::lonmenu();
1.117 www 62: use Apache::lonlocal;
1.139 matthew 63: use HTML::Entities;
1.117 www 64:
1.22 www 65: my $readit;
66:
1.157 matthew 67: ##
68: ## Global Variables
69: ##
1.46 matthew 70:
1.20 www 71: # ----------------------------------------------- Filetypes/Languages/Copyright
1.12 harris41 72: my %language;
1.124 www 73: my %supported_language;
1.12 harris41 74: my %cprtag;
1.192 taceyjo1 75: my %scprtag;
1.12 harris41 76: my %fe; my %fd;
1.41 ng 77: my %category_extensions;
1.12 harris41 78:
1.63 www 79: # ---------------------------------------------- Designs
80:
81: my %designhash;
82:
1.46 matthew 83: # ---------------------------------------------- Thesaurus variables
1.144 matthew 84: #
85: # %Keywords:
86: # A hash used by &keyword to determine if a word is considered a keyword.
87: # $thesaurus_db_file
88: # Scalar containing the full path to the thesaurus database.
1.46 matthew 89:
90: my %Keywords;
91: my $thesaurus_db_file;
92:
1.144 matthew 93: #
94: # Initialize values from language.tab, copyright.tab, filetypes.tab,
95: # thesaurus.tab, and filecategories.tab.
96: #
1.18 www 97: BEGIN {
1.46 matthew 98: # Variable initialization
99: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
100: #
1.22 www 101: unless ($readit) {
1.12 harris41 102: # ------------------------------------------------------------------- languages
103: {
1.158 raeburn 104: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
105: '/language.tab';
106: if ( open(my $fh,"<$langtabfile") ) {
107: while (<$fh>) {
108: next if /^\#/;
109: chomp;
110: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
111: $language{$key}=$val.' - '.$enc;
112: if ($sup) {
113: $supported_language{$key}=$sup;
114: }
115: }
116: close($fh);
117: }
1.12 harris41 118: }
119: # ------------------------------------------------------------------ copyrights
120: {
1.158 raeburn 121: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
122: '/copyright.tab';
123: if ( open (my $fh,"<$copyrightfile") ) {
124: while (<$fh>) {
125: next if /^\#/;
126: chomp;
127: my ($key,$val)=(split(/\s+/,$_,2));
128: $cprtag{$key}=$val;
129: }
130: close($fh);
131: }
1.12 harris41 132: }
1.192 taceyjo1 133: # ------------------------------------------------------------------ source copyrights
134: {
135: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
136: '/source_copyright.tab';
137: if ( open (my $fh,"<$sourcecopyrightfile") ) {
138: while (<$fh>) {
139: next if /^\#/;
140: chomp;
141: my ($key,$val)=(split(/\s+/,$_,2));
142: $scprtag{$key}=$val;
143: }
144: close($fh);
145: }
146: }
1.63 www 147:
148: # -------------------------------------------------------------- domain designs
149:
150: my $filename;
151: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
152: opendir(DIR,$designdir);
153: while ($filename=readdir(DIR)) {
1.271 albertel 154: if ($filename!~/\.tab$/) { next; }
1.63 www 155: my ($domain)=($filename=~/^(\w+)\./);
1.271 albertel 156: {
157: my $designfile = $designdir.'/'.$filename;
158: if ( open (my $fh,"<$designfile") ) {
159: while (<$fh>) {
160: next if /^\#/;
161: chomp;
162: my ($key,$val)=(split(/\=/,$_));
163: if ($val) { $designhash{$domain.'.'.$key}=$val; }
164: }
165: close($fh);
166: }
167: }
1.63 www 168:
169: }
170: closedir(DIR);
171:
172:
1.15 harris41 173: # ------------------------------------------------------------- file categories
174: {
1.158 raeburn 175: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
176: '/filecategories.tab';
177: if ( open (my $fh,"<$categoryfile") ) {
178: while (<$fh>) {
179: next if /^\#/;
180: chomp;
181: my ($extension,$category)=(split(/\s+/,$_,2));
182: push @{$category_extensions{lc($category)}},$extension;
183: }
184: close($fh);
185: }
186:
1.15 harris41 187: }
1.12 harris41 188: # ------------------------------------------------------------------ file types
189: {
1.158 raeburn 190: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
191: '/filetypes.tab';
192: if ( open (my $fh,"<$typesfile") ) {
1.16 harris41 193: while (<$fh>) {
1.158 raeburn 194: next if (/^\#/);
195: chomp;
196: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
197: if ($descr ne '') {
198: $fe{$ending}=lc($emb);
199: $fd{$ending}=$descr;
200: }
201: }
202: close($fh);
203: }
1.12 harris41 204: }
1.22 www 205: &Apache::lonnet::logthis(
1.46 matthew 206: "<font color=yellow>INFO: Read file types</font>");
1.22 www 207: $readit=1;
1.46 matthew 208: } # end of unless($readit)
1.32 matthew 209:
210: }
1.112 bowersj2 211:
1.42 matthew 212: ###############################################################
213: ## HTML and Javascript Helper Functions ##
214: ###############################################################
215:
216: =pod
217:
1.112 bowersj2 218: =head1 HTML and Javascript Functions
1.42 matthew 219:
1.112 bowersj2 220: =over 4
221:
222: =item * browser_and_searcher_javascript ()
223:
224: X<browsing, javascript>X<searching, javascript>Returns a string
225: containing javascript with two functions, C<openbrowser> and
226: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
227: tags.
1.42 matthew 228:
1.112 bowersj2 229: =item * openbrowser(formname,elementname,only,omit) [javascript]
1.42 matthew 230:
231: inputs: formname, elementname, only, omit
232:
233: formname and elementname indicate the name of the html form and name of
234: the element that the results of the browsing selection are to be placed in.
235:
236: Specifying 'only' will restrict the browser to displaying only files
1.185 www 237: with the given extension. Can be a comma separated list.
1.42 matthew 238:
239: Specifying 'omit' will restrict the browser to NOT displaying files
1.185 www 240: with the given extension. Can be a comma separated list.
1.42 matthew 241:
1.112 bowersj2 242: =item * opensearcher(formname, elementname) [javascript]
1.42 matthew 243:
244: Inputs: formname, elementname
245:
246: formname and elementname specify the name of the html form and the name
247: of the element the selection from the search results will be placed in.
248:
249: =cut
250:
251: sub browser_and_searcher_javascript {
1.199 albertel 252: my ($mode)=@_;
253: if (!defined($mode)) { $mode='edit'; }
1.170 www 254: my $resurl=&lastresurl();
1.42 matthew 255: return <<END;
1.219 albertel 256: // <!-- BEGIN LON-CAPA Internal
1.50 matthew 257: var editbrowser = null;
1.135 albertel 258: function openbrowser(formname,elementname,only,omit,titleelement) {
1.170 www 259: var url = '$resurl/?';
1.42 matthew 260: if (editbrowser == null) {
261: url += 'launch=1&';
262: }
263: url += 'catalogmode=interactive&';
1.199 albertel 264: url += 'mode=$mode&';
1.42 matthew 265: url += 'form=' + formname + '&';
266: if (only != null) {
267: url += 'only=' + only + '&';
1.217 albertel 268: } else {
269: url += 'only=&';
270: }
1.42 matthew 271: if (omit != null) {
272: url += 'omit=' + omit + '&';
1.217 albertel 273: } else {
274: url += 'omit=&';
275: }
1.135 albertel 276: if (titleelement != null) {
277: url += 'titleelement=' + titleelement + '&';
1.217 albertel 278: } else {
279: url += 'titleelement=&';
280: }
1.42 matthew 281: url += 'element=' + elementname + '';
282: var title = 'Browser';
1.217 albertel 283: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
1.42 matthew 284: options += ',width=700,height=600';
285: editbrowser = open(url,title,options,'1');
286: editbrowser.focus();
287: }
288: var editsearcher;
1.135 albertel 289: function opensearcher(formname,elementname,titleelement) {
1.42 matthew 290: var url = '/adm/searchcat?';
291: if (editsearcher == null) {
292: url += 'launch=1&';
293: }
294: url += 'catalogmode=interactive&';
1.199 albertel 295: url += 'mode=$mode&';
1.42 matthew 296: url += 'form=' + formname + '&';
1.135 albertel 297: if (titleelement != null) {
298: url += 'titleelement=' + titleelement + '&';
1.217 albertel 299: } else {
300: url += 'titleelement=&';
301: }
1.42 matthew 302: url += 'element=' + elementname + '';
303: var title = 'Search';
304: var options = 'scrollbars=1,resizable=1,menubar=0';
305: options += ',width=700,height=600';
306: editsearcher = open(url,title,options,'1');
307: editsearcher.focus();
308: }
1.219 albertel 309: // END LON-CAPA Internal -->
1.42 matthew 310: END
1.170 www 311: }
312:
313: sub lastresurl {
1.258 albertel 314: if ($env{'environment.lastresurl'}) {
315: return $env{'environment.lastresurl'}
1.170 www 316: } else {
317: return '/res';
318: }
319: }
320:
321: sub storeresurl {
322: my $resurl=&Apache::lonnet::clutter(shift);
323: unless ($resurl=~/^\/res/) { return 0; }
324: $resurl=~s/\/$//;
325: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
326: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
327: return 1;
1.42 matthew 328: }
329:
1.74 www 330: sub studentbrowser_javascript {
1.111 www 331: unless (
1.258 albertel 332: (($env{'request.course.id'}) &&
1.302 albertel 333: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
334: || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
335: '/'.$env{'request.course.sec'})
336: ))
1.258 albertel 337: || ($env{'request.role'}=~/^(au|dc|su)/)
1.111 www 338: ) { return ''; }
1.74 www 339: return (<<'ENDSTDBRW');
340: <script type="text/javascript" language="Javascript" >
341: var stdeditbrowser;
1.111 www 342: function openstdbrowser(formname,uname,udom,roleflag) {
1.74 www 343: var url = '/adm/pickstudent?';
344: var filter;
345: eval('filter=document.'+formname+'.'+uname+'.value;');
346: if (filter != null) {
347: if (filter != '') {
348: url += 'filter='+filter+'&';
349: }
350: }
351: url += 'form=' + formname + '&unameelement='+uname+
352: '&udomelement='+udom;
1.111 www 353: if (roleflag) { url+="&roles=1"; }
1.102 www 354: var title = 'Student_Browser';
1.74 www 355: var options = 'scrollbars=1,resizable=1,menubar=0';
356: options += ',width=700,height=600';
357: stdeditbrowser = open(url,title,options,'1');
358: stdeditbrowser.focus();
359: }
360: </script>
361: ENDSTDBRW
362: }
1.42 matthew 363:
1.74 www 364: sub selectstudent_link {
1.111 www 365: my ($form,$unameele,$udomele)=@_;
1.258 albertel 366: if ($env{'request.course.id'}) {
1.302 albertel 367: if (!&Apache::lonnet::allowed('srm',$env{'request.course.id'})
368: && !&Apache::lonnet::allowed('srm',$env{'request.course.id'}.
369: '/'.$env{'request.course.sec'})) {
1.111 www 370: return '';
371: }
372: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
1.119 www 373: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
1.74 www 374: }
1.258 albertel 375: if ($env{'request.role'}=~/^(au|dc|su)/) {
1.111 www 376: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
1.119 www 377: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
1.111 www 378: }
379: return '';
1.91 www 380: }
381:
382: sub coursebrowser_javascript {
1.234 raeburn 383: my ($domainfilter)=@_;
1.128 albertel 384: return (<<ENDSTDBRW);
1.91 www 385: <script type="text/javascript" language="Javascript" >
386: var stdeditbrowser;
1.293 raeburn 387: function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag) {
1.91 www 388: var url = '/adm/pickcourse?';
389: var filter;
390: if (filter != null) {
391: if (filter != '') {
392: url += 'filter='+filter+'&';
393: }
394: }
1.128 albertel 395: var domainfilter='$domainfilter';
396: if (domainfilter != null) {
397: if (domainfilter != '') {
398: url += 'domainfilter='+domainfilter+'&';
399: }
400: }
1.91 www 401: url += 'form=' + formname + '&cnumelement='+uname+
1.187 albertel 402: '&cdomelement='+udom+
403: '&cnameelement='+desc;
1.234 raeburn 404: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
405: url += '&roleelement='+extra_element;
406: if (domainfilter == null || domainfilter == '') {
407: url += '&domainfilter='+extra_element;
408: }
1.230 raeburn 409: }
1.293 raeburn 410: if (multflag !=null && multflag != '') {
411: url += '&multiple='+multflag;
412: }
1.102 www 413: var title = 'Course_Browser';
1.91 www 414: var options = 'scrollbars=1,resizable=1,menubar=0';
415: options += ',width=700,height=600';
416: stdeditbrowser = open(url,title,options,'1');
417: stdeditbrowser.focus();
418: }
419: </script>
420: ENDSTDBRW
421: }
422:
423: sub selectcourse_link {
1.293 raeburn 424: my ($form,$unameele,$udomele,$desc,$extra_element,$multflag)=@_;
1.91 www 425: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
1.293 raeburn 426: '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'");'."'>".&mt('Select Course')."</a>";
1.74 www 427: }
1.42 matthew 428:
1.273 raeburn 429: sub check_uncheck_jscript {
430: my $jscript = <<"ENDSCRT";
431: function checkAll(field) {
432: if (field.length > 0) {
433: for (i = 0; i < field.length; i++) {
434: field[i].checked = true ;
435: }
436: } else {
437: field.checked = true
438: }
439: }
440:
441: function uncheckAll(field) {
442: if (field.length > 0) {
443: for (i = 0; i < field.length; i++) {
444: field[i].checked = false ;
445: } } else {
446: field.checked = false ;
447: }
448: }
449: ENDSCRT
450: return $jscript;
451: }
452:
453:
1.42 matthew 454: =pod
1.36 matthew 455:
1.112 bowersj2 456: =item * linked_select_forms(...)
1.36 matthew 457:
458: linked_select_forms returns a string containing a <script></script> block
459: and html for two <select> menus. The select menus will be linked in that
460: changing the value of the first menu will result in new values being placed
461: in the second menu. The values in the select menu will appear in alphabetical
462: order.
463:
464: linked_select_forms takes the following ordered inputs:
465:
466: =over 4
467:
1.112 bowersj2 468: =item * $formname, the name of the <form> tag
1.36 matthew 469:
1.112 bowersj2 470: =item * $middletext, the text which appears between the <select> tags
1.36 matthew 471:
1.112 bowersj2 472: =item * $firstdefault, the default value for the first menu
1.36 matthew 473:
1.112 bowersj2 474: =item * $firstselectname, the name of the first <select> tag
1.36 matthew 475:
1.112 bowersj2 476: =item * $secondselectname, the name of the second <select> tag
1.36 matthew 477:
1.112 bowersj2 478: =item * $hashref, a reference to a hash containing the data for the menus.
1.36 matthew 479:
1.41 ng 480: =back
481:
1.36 matthew 482: Below is an example of such a hash. Only the 'text', 'default', and
483: 'select2' keys must appear as stated. keys(%menu) are the possible
484: values for the first select menu. The text that coincides with the
1.41 ng 485: first menu value is given in $menu{$choice1}->{'text'}. The values
1.36 matthew 486: and text for the second menu are given in the hash pointed to by
487: $menu{$choice1}->{'select2'}.
488:
1.112 bowersj2 489: my %menu = ( A1 => { text =>"Choice A1" ,
490: default => "B3",
491: select2 => {
492: B1 => "Choice B1",
493: B2 => "Choice B2",
494: B3 => "Choice B3",
495: B4 => "Choice B4"
496: }
497: },
498: A2 => { text =>"Choice A2" ,
499: default => "C2",
500: select2 => {
501: C1 => "Choice C1",
502: C2 => "Choice C2",
503: C3 => "Choice C3"
504: }
505: },
506: A3 => { text =>"Choice A3" ,
507: default => "D6",
508: select2 => {
509: D1 => "Choice D1",
510: D2 => "Choice D2",
511: D3 => "Choice D3",
512: D4 => "Choice D4",
513: D5 => "Choice D5",
514: D6 => "Choice D6",
515: D7 => "Choice D7"
516: }
517: }
518: );
1.36 matthew 519:
520: =cut
521:
522: sub linked_select_forms {
523: my ($formname,
524: $middletext,
525: $firstdefault,
526: $firstselectname,
527: $secondselectname,
528: $hashref
529: ) = @_;
530: my $second = "document.$formname.$secondselectname";
531: my $first = "document.$formname.$firstselectname";
532: # output the javascript to do the changing
533: my $result = '';
1.219 albertel 534: $result.="<script type=\"text/javascript\">\n";
1.36 matthew 535: $result.="var select2data = new Object();\n";
536: $" = '","';
537: my $debug = '';
538: foreach my $s1 (sort(keys(%$hashref))) {
539: $result.="select2data.d_$s1 = new Object();\n";
540: $result.="select2data.d_$s1.def = new String('".
541: $hashref->{$s1}->{'default'}."');\n";
542: $result.="select2data.d_$s1.values = new Array(";
543: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
544: $result.="\"@s2values\");\n";
545: $result.="select2data.d_$s1.texts = new Array(";
546: my @s2texts;
547: foreach my $value (@s2values) {
548: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
549: }
550: $result.="\"@s2texts\");\n";
551: }
552: $"=' ';
553: $result.= <<"END";
554:
555: function select1_changed() {
556: // Determine new choice
557: var newvalue = "d_" + $first.value;
558: // update select2
559: var values = select2data[newvalue].values;
560: var texts = select2data[newvalue].texts;
561: var select2def = select2data[newvalue].def;
562: var i;
563: // out with the old
564: for (i = 0; i < $second.options.length; i++) {
565: $second.options[i] = null;
566: }
567: // in with the nuclear
568: for (i=0;i<values.length; i++) {
569: $second.options[i] = new Option(values[i]);
1.143 matthew 570: $second.options[i].value = values[i];
1.36 matthew 571: $second.options[i].text = texts[i];
572: if (values[i] == select2def) {
573: $second.options[i].selected = true;
574: }
575: }
576: }
577: </script>
578: END
579: # output the initial values for the selection lists
580: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
581: foreach my $value (sort(keys(%$hashref))) {
582: $result.=" <option value=\"$value\" ";
1.253 albertel 583: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
1.119 www 584: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
1.36 matthew 585: }
586: $result .= "</select>\n";
587: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
588: $result .= $middletext;
589: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
590: my $seconddefault = $hashref->{$firstdefault}->{'default'};
591: foreach my $value (sort(keys(%select2))) {
592: $result.=" <option value=\"$value\" ";
1.253 albertel 593: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
1.119 www 594: $result.=">".&mt($select2{$value})."</option>\n";
1.36 matthew 595: }
596: $result .= "</select>\n";
597: # return $debug;
598: return $result;
599: } # end of sub linked_select_forms {
600:
1.45 matthew 601: =pod
1.44 bowersj2 602:
1.112 bowersj2 603: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
1.44 bowersj2 604:
1.112 bowersj2 605: Returns a string corresponding to an HTML link to the given help
606: $topic, where $topic corresponds to the name of a .tex file in
607: /home/httpd/html/adm/help/tex, with underscores replaced by
608: spaces.
609:
610: $text will optionally be linked to the same topic, allowing you to
611: link text in addition to the graphic. If you do not want to link
612: text, but wish to specify one of the later parameters, pass an
613: empty string.
614:
615: $stayOnPage is a value that will be interpreted as a boolean. If true,
616: the link will not open a new window. If false, the link will open
617: a new window using Javascript. (Default is false.)
618:
619: $width and $height are optional numerical parameters that will
620: override the width and height of the popped up window, which may
621: be useful for certain help topics with big pictures included.
1.44 bowersj2 622:
623: =cut
624:
625: sub help_open_topic {
1.48 bowersj2 626: my ($topic, $text, $stayOnPage, $width, $height) = @_;
627: $text = "" if (not defined $text);
1.44 bowersj2 628: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 629: if ($env{'browser.interface'} eq 'textual' ||
630: $env{'environment.remote'} eq 'off' ) {
1.79 www 631: $stayOnPage=1;
632: }
1.44 bowersj2 633: $width = 350 if (not defined $width);
634: $height = 400 if (not defined $height);
635: my $filename = $topic;
636: $filename =~ s/ /_/g;
637:
1.48 bowersj2 638: my $template = "";
639: my $link;
1.159 www 640:
641: $topic=~s/\W/\_/g;
1.44 bowersj2 642:
643: if (!$stayOnPage)
644: {
1.72 bowersj2 645: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
1.44 bowersj2 646: }
647: else
648: {
1.48 bowersj2 649: $link = "/adm/help/${filename}.hlp";
650: }
651:
652: # Add the text
653: if ($text ne "")
654: {
1.77 www 655: $template .=
656: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
1.78 www 657: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.48 bowersj2 658: }
659:
660: # Add the graphic
1.179 matthew 661: my $title = &mt('Online Help');
1.215 albertel 662: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
1.48 bowersj2 663: $template .= <<"ENDTEMPLATE";
1.218 albertel 664: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
1.44 bowersj2 665: ENDTEMPLATE
1.78 www 666: if ($text ne '') { $template.='</td></tr></table>' };
1.44 bowersj2 667: return $template;
668:
1.106 bowersj2 669: }
670:
671: # This is a quicky function for Latex cheatsheet editing, since it
672: # appears in at least four places
673: sub helpLatexCheatsheet {
674: my $other = shift;
675: my $addOther = '';
676: if ($other) {
677: $addOther = Apache::loncommon::help_open_topic($other, shift,
678: undef, undef, 600) .
679: '</td><td>';
680: }
681: return '<table><tr><td>'.
682: $addOther .
683: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
684: undef,undef,600)
685: .'</td><td>'.
686: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
687: undef,undef,600)
688: .'</td></tr></table>';
1.172 www 689: }
690:
1.193 raeburn 691: sub help_open_menu {
692: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
693: $text = "" if (not defined $text);
694: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 695: if ($env{'browser.interface'} eq 'textual' ||
696: $env{'environment.remote'} eq 'off' ) {
1.193 raeburn 697: $stayOnPage=1;
698: }
699: $width = 620 if (not defined $width);
700: $height = 600 if (not defined $height);
701: my $link='';
1.201 raeburn 702: my $title = &mt('Get help');
1.193 raeburn 703: my $origurl = $ENV{'REQUEST_URI'};
1.227 albertel 704: $origurl=~s|^/~|/priv/|;
1.193 raeburn 705: my $timestamp = time;
706: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
707: $$_ = &Apache::lonnet::escape($$_);
708: }
1.195 albertel 709: if (!$stayOnPage) {
1.193 raeburn 710: $link = "javascript:helpMenu('open')";
1.195 albertel 711: } else {
1.193 raeburn 712: $link = "javascript:helpMenu('display')";
713: }
1.198 raeburn 714: 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 715: 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 716: my $template;
717: if ($text ne "") {
718: $template .=
1.265 albertel 719: "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
720: "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.196 albertel 721: }
1.261 albertel 722: my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
1.215 albertel 723: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
1.331 albertel 724: my $start_page =
725: &Apache::loncommon::start_page('Help Menu', undef,
726: {'frameset' => 1,
727: 'js_ready' => 1,
728: 'add_entries' => {
729: 'border' => '0',
730: 'rows' => "105,*",},});
731: my $end_page =
732: &Apache::loncommon::end_page({'frameset' => 1,
733: 'js_ready' => 1,});
734:
1.196 albertel 735: $template .= <<"ENDTEMPLATE";
1.219 albertel 736: <script type="text/javascript">
1.253 albertel 737: // <!-- BEGIN LON-CAPA Internal
738: // <![CDATA[
1.243 raeburn 739: function helpMenu(target) {
740: var caller = this;
741: if (target == 'open') {
742: var newWindow = null;
743: try {
1.262 albertel 744: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
1.243 raeburn 745: }
746: catch(error) {
747: writeHelp(caller);
748: return;
749: }
750: if (newWindow) {
751: caller = newWindow;
752: }
1.193 raeburn 753: }
1.243 raeburn 754: writeHelp(caller);
755: return;
756: }
757: function writeHelp(caller) {
1.331 albertel 758: caller.document.writeln('$start_page<frame name="bannerframe" src="$banner_link" /><frame name="bodyframe" src="$details_link" /> $end_page')
1.243 raeburn 759: caller.document.close()
760: caller.focus()
1.193 raeburn 761: }
1.253 albertel 762: // ]]>
1.219 albertel 763: // END LON-CAPA Internal -->
1.193 raeburn 764: </script>
1.218 albertel 765: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
1.193 raeburn 766: ENDTEMPLATE
1.203 albertel 767: if ($component_help) {
768: if (!$text) {
769: $template=&help_open_topic($component_help,undef,$stayOnPage,
770: $width,$height).' '.$template;
771: } else {
772: my $help_text;
773: $help_text=&Apache::lonnet::unescape($topic);
774: $template='<table><tr><td>'.
775: &help_open_topic($component_help,$help_text,$stayOnPage,
776: $width,$height).'</td><td>'.$template.
777: '</td></tr></table>';
778: }
779: }
1.196 albertel 780: if ($text ne '') { $template.='</td></tr></table>' };
1.193 raeburn 781: return $template;
782: }
783:
1.172 www 784: sub help_open_bug {
785: my ($topic, $text, $stayOnPage, $width, $height) = @_;
1.258 albertel 786: unless ($env{'user.adv'}) { return ''; }
1.172 www 787: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
788: $text = "" if (not defined $text);
789: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 790: if ($env{'browser.interface'} eq 'textual' ||
791: $env{'environment.remote'} eq 'off' ) {
1.172 www 792: $stayOnPage=1;
793: }
1.184 albertel 794: $width = 600 if (not defined $width);
795: $height = 600 if (not defined $height);
1.172 www 796:
797: $topic=~s/\W+/\+/g;
798: my $link='';
799: my $template='';
800: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
801: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
802: if (!$stayOnPage)
803: {
804: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
805: }
806: else
807: {
808: $link = $url;
809: }
810: # Add the text
811: if ($text ne "")
812: {
813: $template .=
814: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
815: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
816: }
817:
818: # Add the graphic
1.179 matthew 819: my $title = &mt('Report a Bug');
1.215 albertel 820: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
1.172 www 821: $template .= <<"ENDTEMPLATE";
1.218 albertel 822: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
1.172 www 823: ENDTEMPLATE
824: if ($text ne '') { $template.='</td></tr></table>' };
825: return $template;
826:
827: }
828:
829: sub help_open_faq {
830: my ($topic, $text, $stayOnPage, $width, $height) = @_;
1.258 albertel 831: unless ($env{'user.adv'}) { return ''; }
1.172 www 832: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
833: $text = "" if (not defined $text);
834: $stayOnPage = 0 if (not defined $stayOnPage);
1.258 albertel 835: if ($env{'browser.interface'} eq 'textual' ||
836: $env{'environment.remote'} eq 'off' ) {
1.172 www 837: $stayOnPage=1;
838: }
839: $width = 350 if (not defined $width);
840: $height = 400 if (not defined $height);
841:
842: $topic=~s/\W+/\+/g;
843: my $link='';
844: my $template='';
845: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
846: if (!$stayOnPage)
847: {
848: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
849: }
850: else
851: {
852: $link = $url;
853: }
854:
855: # Add the text
856: if ($text ne "")
857: {
858: $template .=
1.173 www 859: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
860: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.172 www 861: }
862:
863: # Add the graphic
1.179 matthew 864: my $title = &mt('View the FAQ');
1.215 albertel 865: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
1.172 www 866: $template .= <<"ENDTEMPLATE";
1.218 albertel 867: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
1.172 www 868: ENDTEMPLATE
869: if ($text ne '') { $template.='</td></tr></table>' };
870: return $template;
871:
1.44 bowersj2 872: }
1.37 matthew 873:
1.180 matthew 874: ###############################################################
875: ###############################################################
876:
1.45 matthew 877: =pod
878:
1.256 matthew 879: =item * change_content_javascript():
880:
881: This and the next function allow you to create small sections of an
882: otherwise static HTML page that you can update on the fly with
883: Javascript, even in Netscape 4.
884:
885: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
886: must be written to the HTML page once. It will prove the Javascript
887: function "change(name, content)". Calling the change function with the
888: name of the section
889: you want to update, matching the name passed to C<changable_area>, and
890: the new content you want to put in there, will put the content into
891: that area.
892:
893: B<Note>: Netscape 4 only reserves enough space for the changable area
894: to contain room for the original contents. You need to "make space"
895: for whatever changes you wish to make, and be B<sure> to check your
896: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
897: it's adequate for updating a one-line status display, but little more.
898: This script will set the space to 100% width, so you only need to
899: worry about height in Netscape 4.
900:
901: Modern browsers are much less limiting, and if you can commit to the
902: user not using Netscape 4, this feature may be used freely with
903: pretty much any HTML.
904:
905: =cut
906:
907: sub change_content_javascript {
908: # If we're on Netscape 4, we need to use Layer-based code
1.258 albertel 909: if ($env{'browser.type'} eq 'netscape' &&
910: $env{'browser.version'} =~ /^4\./) {
1.256 matthew 911: return (<<NETSCAPE4);
912: function change(name, content) {
913: doc = document.layers[name+"___escape"].layers[0].document;
914: doc.open();
915: doc.write(content);
916: doc.close();
917: }
918: NETSCAPE4
919: } else {
920: # Otherwise, we need to use semi-standards-compliant code
921: # (technically, "innerHTML" isn't standard but the equivalent
922: # is really scary, and every useful browser supports it
923: return (<<DOMBASED);
924: function change(name, content) {
925: element = document.getElementById(name);
926: element.innerHTML = content;
927: }
928: DOMBASED
929: }
930: }
931:
932: =pod
933:
934: =item * changable_area($name, $origContent):
935:
936: This provides a "changable area" that can be modified on the fly via
937: the Javascript code provided in C<change_content_javascript>. $name is
938: the name you will use to reference the area later; do not repeat the
939: same name on a given HTML page more then once. $origContent is what
940: the area will originally contain, which can be left blank.
941:
942: =cut
943:
944: sub changable_area {
945: my ($name, $origContent) = @_;
946:
1.258 albertel 947: if ($env{'browser.type'} eq 'netscape' &&
948: $env{'browser.version'} =~ /^4\./) {
1.256 matthew 949: # If this is netscape 4, we need to use the Layer tag
950: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
951: } else {
952: return "<span id='$name'>$origContent</span>";
953: }
954: }
955:
956: =pod
957:
958: =back
959:
960: =head1 Excel and CSV file utility routines
961:
962: =over 4
963:
964: =cut
965:
966: ###############################################################
967: ###############################################################
968:
969: =pod
970:
1.112 bowersj2 971: =item * csv_translate($text)
1.37 matthew 972:
1.185 www 973: Translate $text to allow it to be output as a 'comma separated values'
1.37 matthew 974: format.
975:
976: =cut
977:
1.180 matthew 978: ###############################################################
979: ###############################################################
1.37 matthew 980: sub csv_translate {
981: my $text = shift;
982: $text =~ s/\"/\"\"/g;
1.209 albertel 983: $text =~ s/\n/ /g;
1.37 matthew 984: return $text;
985: }
1.180 matthew 986:
987: ###############################################################
988: ###############################################################
989:
990: =pod
991:
992: =item * define_excel_formats
993:
994: Define some commonly used Excel cell formats.
995:
996: Currently supported formats:
997:
998: =over 4
999:
1000: =item header
1001:
1002: =item bold
1003:
1004: =item h1
1005:
1006: =item h2
1007:
1008: =item h3
1009:
1.256 matthew 1010: =item h4
1011:
1012: =item i
1013:
1.180 matthew 1014: =item date
1015:
1016: =back
1017:
1018: Inputs: $workbook
1019:
1020: Returns: $format, a hash reference.
1021:
1022: =cut
1023:
1024: ###############################################################
1025: ###############################################################
1026: sub define_excel_formats {
1027: my ($workbook) = @_;
1028: my $format;
1029: $format->{'header'} = $workbook->add_format(bold => 1,
1030: bottom => 1,
1031: align => 'center');
1032: $format->{'bold'} = $workbook->add_format(bold=>1);
1033: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1034: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1035: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1.255 matthew 1036: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
1.246 matthew 1037: $format->{'i'} = $workbook->add_format(italic=>1);
1.180 matthew 1038: $format->{'date'} = $workbook->add_format(num_format=>
1.207 matthew 1039: 'mm/dd/yyyy hh:mm:ss');
1.180 matthew 1040: return $format;
1041: }
1042:
1043: ###############################################################
1044: ###############################################################
1.113 bowersj2 1045:
1046: =pod
1047:
1.256 matthew 1048: =item * create_workbook
1.255 matthew 1049:
1050: Create an Excel worksheet. If it fails, output message on the
1051: request object and return undefs.
1052:
1053: Inputs: Apache request object
1054:
1055: Returns (undef) on failure,
1056: Excel worksheet object, scalar with filename, and formats
1057: from &Apache::loncommon::define_excel_formats on success
1058:
1059: =cut
1060:
1061: ###############################################################
1062: ###############################################################
1063: sub create_workbook {
1064: my ($r) = @_;
1065: #
1066: # Create the excel spreadsheet
1067: my $filename = '/prtspool/'.
1.258 albertel 1068: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1.255 matthew 1069: time.'_'.rand(1000000000).'.xls';
1070: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1071: if (! defined($workbook)) {
1072: $r->log_error("Error creating excel spreadsheet $filename: $!");
1073: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1074: "This error has been logged. ".
1075: "Please alert your LON-CAPA administrator").
1076: '</p>');
1077: return (undef);
1078: }
1079: #
1080: $workbook->set_tempdir('/home/httpd/perl/tmp');
1081: #
1082: my $format = &Apache::loncommon::define_excel_formats($workbook);
1083: return ($workbook,$filename,$format);
1084: }
1085:
1086: ###############################################################
1087: ###############################################################
1088:
1089: =pod
1090:
1.256 matthew 1091: =item * create_text_file
1.113 bowersj2 1092:
1.256 matthew 1093: Create a file to write to and eventually make available to the usre.
1094: If file creation fails, outputs an error message on the request object and
1095: return undefs.
1.113 bowersj2 1096:
1.256 matthew 1097: Inputs: Apache request object, and file suffix
1.113 bowersj2 1098:
1.256 matthew 1099: Returns (undef) on failure,
1100: Filehandle and filename on success.
1.113 bowersj2 1101:
1102: =cut
1103:
1.256 matthew 1104: ###############################################################
1105: ###############################################################
1106: sub create_text_file {
1107: my ($r,$suffix) = @_;
1108: if (! defined($suffix)) { $suffix = 'txt'; };
1109: my $fh;
1110: my $filename = '/prtspool/'.
1.258 albertel 1111: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1.256 matthew 1112: time.'_'.rand(1000000000).'.'.$suffix;
1113: $fh = Apache::File->new('>/home/httpd'.$filename);
1114: if (! defined($fh)) {
1115: $r->log_error("Couldn't open $filename for output $!");
1116: $r->print("Problems occured in creating the output file. ".
1117: "This error has been logged. ".
1118: "Please alert your LON-CAPA administrator.");
1.113 bowersj2 1119: }
1.256 matthew 1120: return ($fh,$filename)
1.113 bowersj2 1121: }
1122:
1123:
1.256 matthew 1124: =pod
1.113 bowersj2 1125:
1126: =back
1127:
1128: =cut
1.37 matthew 1129:
1130: ###############################################################
1.33 matthew 1131: ## Home server <option> list generating code ##
1132: ###############################################################
1.35 matthew 1133:
1.45 matthew 1134: =pod
1135:
1.112 bowersj2 1136: =head1 Home Server option list generating code
1137:
1138: =over 4
1139:
1140: =item * get_domains()
1.35 matthew 1141:
1142: Returns an array containing each of the domains listed in the hosts.tab
1143: file.
1144:
1145: =cut
1146:
1147: #-------------------------------------------
1.34 matthew 1148: sub get_domains {
1149: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1150: my @domains;
1151: my %seen;
1152: foreach (sort values(%Apache::lonnet::hostdom)) {
1.169 www 1153: push (@domains,$_) unless $seen{$_}++;
1.34 matthew 1154: }
1155: return @domains;
1156: }
1.88 www 1157:
1.169 www 1158: # ------------------------------------------
1159:
1160: sub domain_select {
1161: my ($name,$value,$multiple)=@_;
1162: my %domains=map {
1163: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1164: } &get_domains;
1165: if ($multiple) {
1166: $domains{''}=&mt('Any domain');
1.287 albertel 1167: return &multiple_select_form($name,$value,4,\%domains);
1.169 www 1168: } else {
1169: return &select_form($name,$value,%domains);
1170: }
1171: }
1172:
1.282 albertel 1173: #-------------------------------------------
1174:
1175: =pod
1176:
1.287 albertel 1177: =item * multiple_select_form($name,$value,$size,$hash,$order)
1.282 albertel 1178:
1179: Returns a string containing a <select> element int multiple mode
1180:
1181:
1182: Args:
1183: $name - name of the <select> element
1184: $value - sclara or array ref of values that should already be selected
1185: $size - number of rows long the select element is
1.283 albertel 1186: $hash - the elements should be 'option' => 'shown text'
1.282 albertel 1187: (shown text should already have been &mt())
1.284 albertel 1188: $order - (optional) array ref of the order to show the elments in
1.283 albertel 1189:
1.282 albertel 1190: =cut
1191:
1192: #-------------------------------------------
1.169 www 1193: sub multiple_select_form {
1.284 albertel 1194: my ($name,$value,$size,$hash,$order)=@_;
1.169 www 1195: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1196: my $output='';
1.191 matthew 1197: if (! defined($size)) {
1198: $size = 4;
1.283 albertel 1199: if (scalar(keys(%$hash))<4) {
1200: $size = scalar(keys(%$hash));
1.191 matthew 1201: }
1202: }
1.169 www 1203: $output.="\n<select name='$name' size='$size' multiple='1'>";
1.286 banghart 1204: my @order = ref($order) ? @$order
1.284 albertel 1205: : sort(keys(%$hash));
1206: foreach my $key (@order) {
1207: $output.='<option value="'.$key.'" ';
1208: $output.='selected="selected" ' if ($selected{$key});
1209: $output.='>'.$hash->{$key}."</option>\n";
1.169 www 1210: }
1211: $output.="</select>\n";
1212: return $output;
1213: }
1214:
1.88 www 1215: #-------------------------------------------
1216:
1217: =pod
1218:
1.112 bowersj2 1219: =item * select_form($defdom,$name,%hash)
1.88 www 1220:
1221: Returns a string containing a <select name='$name' size='1'> form to
1222: allow a user to select options from a hash option_name => displayed text.
1223: See lonrights.pm for an example invocation and use.
1224:
1225: =cut
1226:
1227: #-------------------------------------------
1228: sub select_form {
1229: my ($def,$name,%hash) = @_;
1230: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1.128 albertel 1231: my @keys;
1232: if (exists($hash{'select_form_order'})) {
1233: @keys=@{$hash{'select_form_order'}};
1234: } else {
1235: @keys=sort(keys(%hash));
1236: }
1237: foreach (@keys) {
1.88 www 1238: $selectform.="<option value=\"$_\" ".
1.253 albertel 1239: ($_ eq $def ? 'selected="selected" ' : '').
1.119 www 1240: ">".&mt($hash{$_})."</option>\n";
1.88 www 1241: }
1242: $selectform.="</select>";
1243: return $selectform;
1244: }
1245:
1.167 www 1246: sub gradeleveldescription {
1247: my $gradelevel=shift;
1248: my %gradelevels=(0 => 'Not specified',
1249: 1 => 'Grade 1',
1250: 2 => 'Grade 2',
1251: 3 => 'Grade 3',
1252: 4 => 'Grade 4',
1253: 5 => 'Grade 5',
1254: 6 => 'Grade 6',
1255: 7 => 'Grade 7',
1256: 8 => 'Grade 8',
1257: 9 => 'Grade 9',
1258: 10 => 'Grade 10',
1259: 11 => 'Grade 11',
1260: 12 => 'Grade 12',
1261: 13 => 'Grade 13',
1262: 14 => '100 Level',
1263: 15 => '200 Level',
1264: 16 => '300 Level',
1265: 17 => '400 Level',
1266: 18 => 'Graduate Level');
1267: return &mt($gradelevels{$gradelevel});
1268: }
1269:
1.163 www 1270: sub select_level_form {
1271: my ($deflevel,$name)=@_;
1272: unless ($deflevel) { $deflevel=0; }
1.167 www 1273: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1274: for (my $i=0; $i<=18; $i++) {
1275: $selectform.="<option value=\"$i\" ".
1.253 albertel 1276: ($i==$deflevel ? 'selected="selected" ' : '').
1.167 www 1277: ">".&gradeleveldescription($i)."</option>\n";
1278: }
1279: $selectform.="</select>";
1280: return $selectform;
1.163 www 1281: }
1.167 www 1282:
1.35 matthew 1283: #-------------------------------------------
1284:
1.45 matthew 1285: =pod
1286:
1.112 bowersj2 1287: =item * select_dom_form($defdom,$name,$includeempty)
1.35 matthew 1288:
1289: Returns a string containing a <select name='$name' size='1'> form to
1290: allow a user to select the domain to preform an operation in.
1291: See loncreateuser.pm for an example invocation and use.
1292:
1.90 www 1293: If the $includeempty flag is set, it also includes an empty choice ("no domain
1294: selected");
1295:
1.35 matthew 1296: =cut
1297:
1298: #-------------------------------------------
1.34 matthew 1299: sub select_dom_form {
1.90 www 1300: my ($defdom,$name,$includeempty) = @_;
1.34 matthew 1301: my @domains = get_domains();
1.90 www 1302: if ($includeempty) { @domains=('',@domains); }
1.34 matthew 1303: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1304: foreach (@domains) {
1305: $selectdomain.="<option value=\"$_\" ".
1.253 albertel 1306: ($_ eq $defdom ? 'selected="selected" ' : '').
1.34 matthew 1307: ">$_</option>\n";
1308: }
1309: $selectdomain.="</select>";
1310: return $selectdomain;
1311: }
1312:
1.35 matthew 1313: #-------------------------------------------
1314:
1.45 matthew 1315: =pod
1316:
1.112 bowersj2 1317: =item * get_library_servers($domain)
1.35 matthew 1318:
1319: Returns a hash which contains keys like '103l3' and values like
1320: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1321: given $domain.
1322:
1323: =cut
1324:
1325: #-------------------------------------------
1.52 matthew 1326: sub get_library_servers {
1.33 matthew 1327: my $domain = shift;
1.52 matthew 1328: my %library_servers;
1.33 matthew 1329: foreach (keys(%Apache::lonnet::libserv)) {
1330: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1.52 matthew 1331: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1.33 matthew 1332: }
1333: }
1.52 matthew 1334: return %library_servers;
1.33 matthew 1335: }
1336:
1.35 matthew 1337: #-------------------------------------------
1338:
1.45 matthew 1339: =pod
1340:
1.112 bowersj2 1341: =item * home_server_option_list($domain)
1.35 matthew 1342:
1343: returns a string which contains an <option> list to be used in a
1344: <select> form input. See loncreateuser.pm for an example.
1345:
1346: =cut
1347:
1348: #-------------------------------------------
1.33 matthew 1349: sub home_server_option_list {
1350: my $domain = shift;
1.52 matthew 1351: my %servers = &get_library_servers($domain);
1.33 matthew 1352: my $result = '';
1353: foreach (sort keys(%servers)) {
1354: $result.=
1355: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1356: }
1357: return $result;
1358: }
1.112 bowersj2 1359:
1360: =pod
1361:
1362: =back
1363:
1364: =cut
1.87 matthew 1365:
1366: ###############################################################
1.112 bowersj2 1367: ## Decoding User Agent ##
1.87 matthew 1368: ###############################################################
1369:
1370: =pod
1371:
1.112 bowersj2 1372: =head1 Decoding the User Agent
1373:
1374: =over 4
1375:
1376: =item * &decode_user_agent()
1.87 matthew 1377:
1378: Inputs: $r
1379:
1380: Outputs:
1381:
1382: =over 4
1383:
1.112 bowersj2 1384: =item * $httpbrowser
1.87 matthew 1385:
1.112 bowersj2 1386: =item * $clientbrowser
1.87 matthew 1387:
1.112 bowersj2 1388: =item * $clientversion
1.87 matthew 1389:
1.112 bowersj2 1390: =item * $clientmathml
1.87 matthew 1391:
1.112 bowersj2 1392: =item * $clientunicode
1.87 matthew 1393:
1.112 bowersj2 1394: =item * $clientos
1.87 matthew 1395:
1396: =back
1397:
1.157 matthew 1398: =back
1399:
1.87 matthew 1400: =cut
1401:
1402: ###############################################################
1403: ###############################################################
1404: sub decode_user_agent {
1.247 albertel 1405: my ($r)=@_;
1.87 matthew 1406: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1407: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1408: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1.247 albertel 1409: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1.87 matthew 1410: my $clientbrowser='unknown';
1411: my $clientversion='0';
1412: my $clientmathml='';
1413: my $clientunicode='0';
1414: for (my $i=0;$i<=$#browsertype;$i++) {
1415: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1416: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1417: $clientbrowser=$bname;
1418: $httpbrowser=~/$vreg/i;
1419: $clientversion=$1;
1420: $clientmathml=($clientversion>=$minv);
1421: $clientunicode=($clientversion>=$univ);
1422: }
1423: }
1424: my $clientos='unknown';
1425: if (($httpbrowser=~/linux/i) ||
1426: ($httpbrowser=~/unix/i) ||
1427: ($httpbrowser=~/ux/i) ||
1428: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1429: if (($httpbrowser=~/vax/i) ||
1430: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1431: if ($httpbrowser=~/next/i) { $clientos='next'; }
1432: if (($httpbrowser=~/mac/i) ||
1433: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1434: if ($httpbrowser=~/win/i) { $clientos='win'; }
1435: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1436: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1437: $clientunicode,$clientos,);
1438: }
1439:
1.32 matthew 1440: ###############################################################
1441: ## Authentication changing form generation subroutines ##
1442: ###############################################################
1443: ##
1444: ## All of the authform_xxxxxxx subroutines take their inputs in a
1445: ## hash, and have reasonable default values.
1446: ##
1447: ## formname = the name given in the <form> tag.
1.35 matthew 1448: #-------------------------------------------
1449:
1.45 matthew 1450: =pod
1451:
1.112 bowersj2 1452: =head1 Authentication Routines
1453:
1454: =over 4
1455:
1456: =item * authform_xxxxxx
1.35 matthew 1457:
1458: The authform_xxxxxx subroutines provide javascript and html forms which
1459: handle some of the conveniences required for authentication forms.
1460: This is not an optimal method, but it works.
1461:
1462: See loncreateuser.pm for invocation and use examples.
1463:
1464: =over 4
1465:
1.112 bowersj2 1466: =item * authform_header
1.35 matthew 1467:
1.112 bowersj2 1468: =item * authform_authorwarning
1.35 matthew 1469:
1.112 bowersj2 1470: =item * authform_nochange
1.35 matthew 1471:
1.112 bowersj2 1472: =item * authform_kerberos
1.35 matthew 1473:
1.112 bowersj2 1474: =item * authform_internal
1.35 matthew 1475:
1.112 bowersj2 1476: =item * authform_filesystem
1.35 matthew 1477:
1478: =back
1479:
1.157 matthew 1480: =back
1481:
1.35 matthew 1482: =cut
1483:
1484: #-------------------------------------------
1.32 matthew 1485: sub authform_header{
1486: my %in = (
1487: formname => 'cu',
1.80 albertel 1488: kerb_def_dom => '',
1.32 matthew 1489: @_,
1490: );
1491: $in{'formname'} = 'document.' . $in{'formname'};
1492: my $result='';
1.80 albertel 1493:
1494: #---------------------------------------------- Code for upper case translation
1495: my $Javascript_toUpperCase;
1496: unless ($in{kerb_def_dom}) {
1497: $Javascript_toUpperCase =<<"END";
1498: switch (choice) {
1499: case 'krb': currentform.elements[choicearg].value =
1500: currentform.elements[choicearg].value.toUpperCase();
1501: break;
1502: default:
1503: }
1504: END
1505: } else {
1506: $Javascript_toUpperCase = "";
1507: }
1508:
1.165 raeburn 1509: my $radioval = "'nochange'";
1.174 matthew 1510: if (exists($in{'curr_authtype'}) &&
1511: defined($in{'curr_authtype'}) &&
1512: $in{'curr_authtype'} ne '') {
1513: $radioval = "'$in{'curr_authtype'}arg'";
1514: }
1.165 raeburn 1515: my $argfield = 'null';
1516: if ( grep/^mode$/,(keys %in) ) {
1517: if ($in{'mode'} eq 'modifycourse') {
1518: if ( grep/^curr_authtype$/,(keys %in) ) {
1519: $radioval = "'$in{'curr_authtype'}'";
1520: }
1521: if ( grep/^curr_autharg$/,(keys %in) ) {
1522: unless ($in{'curr_autharg'} eq '') {
1523: $argfield = "'$in{'curr_autharg'}'";
1524: }
1525: }
1526: }
1527: }
1528:
1.32 matthew 1529: $result.=<<"END";
1530: var current = new Object();
1.165 raeburn 1531: current.radiovalue = $radioval;
1532: current.argfield = $argfield;
1.32 matthew 1533:
1534: function changed_radio(choice,currentform) {
1535: var choicearg = choice + 'arg';
1536: // If a radio button in changed, we need to change the argfield
1537: if (current.radiovalue != choice) {
1538: current.radiovalue = choice;
1539: if (current.argfield != null) {
1540: currentform.elements[current.argfield].value = '';
1541: }
1542: if (choice == 'nochange') {
1543: current.argfield = null;
1544: } else {
1545: current.argfield = choicearg;
1546: switch(choice) {
1547: case 'krb':
1548: currentform.elements[current.argfield].value =
1549: "$in{'kerb_def_dom'}";
1550: break;
1551: default:
1552: break;
1553: }
1554: }
1555: }
1556: return;
1557: }
1.22 www 1558:
1.32 matthew 1559: function changed_text(choice,currentform) {
1560: var choicearg = choice + 'arg';
1561: if (currentform.elements[choicearg].value !='') {
1.80 albertel 1562: $Javascript_toUpperCase
1.32 matthew 1563: // clear old field
1564: if ((current.argfield != choicearg) && (current.argfield != null)) {
1565: currentform.elements[current.argfield].value = '';
1566: }
1567: current.argfield = choicearg;
1568: }
1569: set_auth_radio_buttons(choice,currentform);
1570: return;
1.20 www 1571: }
1.32 matthew 1572:
1573: function set_auth_radio_buttons(newvalue,currentform) {
1574: var i=0;
1575: while (i < currentform.login.length) {
1576: if (currentform.login[i].value == newvalue) { break; }
1577: i++;
1578: }
1579: if (i == currentform.login.length) {
1580: return;
1581: }
1582: current.radiovalue = newvalue;
1583: currentform.login[i].checked = true;
1584: return;
1585: }
1586: END
1587: return $result;
1588: }
1589:
1590: sub authform_authorwarning{
1591: my $result='';
1.144 matthew 1592: $result='<i>'.
1593: &mt('As a general rule, only authors or co-authors should be '.
1594: 'filesystem authenticated '.
1595: '(which allows access to the server filesystem).')."</i>\n";
1.32 matthew 1596: return $result;
1597: }
1598:
1599: sub authform_nochange{
1600: my %in = (
1601: formname => 'document.cu',
1602: kerb_def_dom => 'MSU.EDU',
1603: @_,
1604: );
1.281 albertel 1605: my $result = '<label>'.&mt('[_1] Do not change login data',
1.144 matthew 1606: '<input type="radio" name="login" value="nochange" '.
1607: 'checked="checked" onclick="'.
1.281 albertel 1608: "javascript:changed_radio('nochange',$in{'formname'});".'" />').
1609: '</label>';
1.32 matthew 1610: return $result;
1611: }
1612:
1613: sub authform_kerberos{
1614: my %in = (
1615: formname => 'document.cu',
1616: kerb_def_dom => 'MSU.EDU',
1.80 albertel 1617: kerb_def_auth => 'krb4',
1.32 matthew 1618: @_,
1619: );
1.165 raeburn 1620: my ($check4,$check5,$krbarg);
1.80 albertel 1621: if ($in{'kerb_def_auth'} eq 'krb5') {
1622: $check5 = " checked=\"on\"";
1623: } else {
1624: $check4 = " checked=\"on\"";
1625: }
1.165 raeburn 1626: $krbarg = $in{'kerb_def_dom'};
1627:
1628: my $krbcheck = "";
1629: if ( grep/^curr_authtype$/,(keys %in) ) {
1630: if ($in{'curr_authtype'} =~ m/^krb/) {
1631: $krbcheck = " checked=\"on\"";
1632: if ( grep/^curr_autharg$/,(keys %in) ) {
1633: $krbarg = $in{'curr_autharg'};
1634: }
1635: }
1636: }
1637:
1.144 matthew 1638: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1639: my $result .= &mt
1640: ('[_1] Kerberos authenticated with domain [_2] '.
1.281 albertel 1641: '[_3] Version 4 [_4] Version 5 [_5]',
1642: '<label><input type="radio" name="login" value="krb" '.
1.165 raeburn 1643: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1.281 albertel 1644: '</label><input type="text" size="10" name="krbarg" '.
1.165 raeburn 1645: 'value="'.$krbarg.'" '.
1.144 matthew 1646: 'onchange="'.$jscall.'" />',
1.281 albertel 1647: '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
1648: '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
1649: '</label>');
1.32 matthew 1650: return $result;
1651: }
1652:
1653: sub authform_internal{
1654: my %args = (
1655: formname => 'document.cu',
1656: kerb_def_dom => 'MSU.EDU',
1657: @_,
1658: );
1.165 raeburn 1659:
1660: my $intcheck = "";
1661: my $intarg = 'value=""';
1662: if ( grep/^curr_authtype$/,(keys %args) ) {
1663: if ($args{'curr_authtype'} eq 'int') {
1664: $intcheck = " checked=\"on\"";
1665: if ( grep/^curr_autharg$/,(keys %args) ) {
1666: $intarg = "value=\"$args{'curr_autharg'}\"";
1667: }
1668: }
1669: }
1670:
1.144 matthew 1671: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1672: my $result.=&mt
1673: ('[_1] Internally authenticated (with initial password [_2])',
1.281 albertel 1674: '<label><input type="radio" name="login" value="int" '.$intcheck.
1.165 raeburn 1675: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1676: '</label><input type="text" size="10" name="intarg" '.$intarg.
1.165 raeburn 1677: ' onchange="'.$jscall.'" />');
1.32 matthew 1678: return $result;
1679: }
1680:
1681: sub authform_local{
1682: my %in = (
1683: formname => 'document.cu',
1684: kerb_def_dom => 'MSU.EDU',
1685: @_,
1686: );
1.165 raeburn 1687:
1688: my $loccheck = "";
1689: my $locarg = 'value=""';
1690: if ( grep/^curr_authtype$/,(keys %in) ) {
1691: if ($in{'curr_authtype'} eq 'loc') {
1692: $loccheck = " checked=\"on\"";
1693: if ( grep/^curr_autharg$/,(keys %in) ) {
1694: $locarg = "value=\"$in{'curr_autharg'}\"";
1695: }
1696: }
1697: }
1698:
1.144 matthew 1699: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1.160 matthew 1700: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1.281 albertel 1701: '<label><input type="radio" name="login" value="loc" '.$loccheck.
1.165 raeburn 1702: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1703: '</label><input type="text" size="10" name="locarg" '.$locarg.
1.165 raeburn 1704: ' onchange="'.$jscall.'" />');
1.32 matthew 1705: return $result;
1706: }
1707:
1708: sub authform_filesystem{
1709: my %in = (
1710: formname => 'document.cu',
1711: kerb_def_dom => 'MSU.EDU',
1712: @_,
1713: );
1.144 matthew 1714: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1715: my $result.= &mt
1716: ('[_1] Filesystem Authenticated (with initial password [_2])',
1.281 albertel 1717: '<label><input type="radio" name="login" value="fsys" '.
1.144 matthew 1718: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1.281 albertel 1719: '</label><input type="text" size="10" name="fsysarg" value="" '.
1.144 matthew 1720: 'onchange="'.$jscall.'" />');
1.32 matthew 1721: return $result;
1722: }
1723:
1.80 albertel 1724: ###############################################################
1725: ## Get Authentication Defaults for Domain ##
1726: ###############################################################
1727:
1728: =pod
1729:
1.112 bowersj2 1730: =head1 Domains and Authentication
1731:
1732: Returns default authentication type and an associated argument as
1733: listed in file 'domain.tab'.
1734:
1735: =over 4
1736:
1737: =item * get_auth_defaults
1.80 albertel 1738:
1739: get_auth_defaults($target_domain) returns the default authentication
1740: type and an associated argument (initial password or a kerberos domain).
1741: These values are stored in lonTabs/domain.tab
1742:
1743: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1744:
1745: If target_domain is not found in domain.tab, returns nothing ('').
1746:
1747: =cut
1748:
1749: #-------------------------------------------
1750: sub get_auth_defaults {
1751: my $domain=shift;
1752: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1753: }
1754: ###############################################################
1755: ## End Get Authentication Defaults for Domain ##
1756: ###############################################################
1757:
1758: ###############################################################
1759: ## Get Kerberos Defaults for Domain ##
1760: ###############################################################
1761: ##
1762: ## Returns default kerberos version and an associated argument
1763: ## as listed in file domain.tab. If not listed, provides
1764: ## appropriate default domain and kerberos version.
1765: ##
1766: #-------------------------------------------
1767:
1768: =pod
1769:
1.112 bowersj2 1770: =item * get_kerberos_defaults
1.80 albertel 1771:
1772: get_kerberos_defaults($target_domain) returns the default kerberos
1773: version and domain. If not found in domain.tabs, it defaults to
1774: version 4 and the domain of the server.
1775:
1776: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1777:
1778: =cut
1779:
1780: #-------------------------------------------
1781: sub get_kerberos_defaults {
1782: my $domain=shift;
1783: my ($krbdef,$krbdefdom) =
1784: &Apache::loncommon::get_auth_defaults($domain);
1785: unless ($krbdef =~/^krb/ && $krbdefdom) {
1786: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1787: my $krbdefdom=$1;
1788: $krbdefdom=~tr/a-z/A-Z/;
1789: $krbdef = "krb4";
1790: }
1791: return ($krbdef,$krbdefdom);
1792: }
1.112 bowersj2 1793:
1794: =pod
1795:
1796: =back
1797:
1798: =cut
1.32 matthew 1799:
1.46 matthew 1800: ###############################################################
1801: ## Thesaurus Functions ##
1802: ###############################################################
1.20 www 1803:
1.46 matthew 1804: =pod
1.20 www 1805:
1.112 bowersj2 1806: =head1 Thesaurus Functions
1807:
1808: =over 4
1809:
1810: =item * initialize_keywords
1.46 matthew 1811:
1812: Initializes the package variable %Keywords if it is empty. Uses the
1813: package variable $thesaurus_db_file.
1814:
1815: =cut
1816:
1817: ###################################################
1818:
1819: sub initialize_keywords {
1820: return 1 if (scalar keys(%Keywords));
1821: # If we are here, %Keywords is empty, so fill it up
1822: # Make sure the file we need exists...
1823: if (! -e $thesaurus_db_file) {
1824: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1825: " failed because it does not exist");
1826: return 0;
1827: }
1828: # Set up the hash as a database
1829: my %thesaurus_db;
1830: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1831: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1832: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1833: $thesaurus_db_file);
1834: return 0;
1835: }
1836: # Get the average number of appearances of a word.
1837: my $avecount = $thesaurus_db{'average.count'};
1838: # Put keywords (those that appear > average) into %Keywords
1839: while (my ($word,$data)=each (%thesaurus_db)) {
1840: my ($count,undef) = split /:/,$data;
1841: $Keywords{$word}++ if ($count > $avecount);
1842: }
1843: untie %thesaurus_db;
1844: # Remove special values from %Keywords.
1845: foreach ('total.count','average.count') {
1846: delete($Keywords{$_}) if (exists($Keywords{$_}));
1847: }
1848: return 1;
1849: }
1850:
1851: ###################################################
1852:
1853: =pod
1854:
1.112 bowersj2 1855: =item * keyword($word)
1.46 matthew 1856:
1857: Returns true if $word is a keyword. A keyword is a word that appears more
1858: than the average number of times in the thesaurus database. Calls
1859: &initialize_keywords
1860:
1861: =cut
1862:
1863: ###################################################
1.20 www 1864:
1865: sub keyword {
1.46 matthew 1866: return if (!&initialize_keywords());
1867: my $word=lc(shift());
1868: $word=~s/\W//g;
1869: return exists($Keywords{$word});
1.20 www 1870: }
1.46 matthew 1871:
1872: ###############################################################
1873:
1874: =pod
1.20 www 1875:
1.112 bowersj2 1876: =item * get_related_words
1.46 matthew 1877:
1.160 matthew 1878: Look up a word in the thesaurus. Takes a scalar argument and returns
1.46 matthew 1879: an array of words. If the keyword is not in the thesaurus, an empty array
1880: will be returned. The order of the words returned is determined by the
1881: database which holds them.
1882:
1883: Uses global $thesaurus_db_file.
1884:
1885: =cut
1886:
1887: ###############################################################
1888: sub get_related_words {
1889: my $keyword = shift;
1890: my %thesaurus_db;
1891: if (! -e $thesaurus_db_file) {
1892: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1893: "failed because the file does not exist");
1894: return ();
1895: }
1896: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1897: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1898: return ();
1899: }
1900: my @Words=();
1901: if (exists($thesaurus_db{$keyword})) {
1902: $_ = $thesaurus_db{$keyword};
1903: (undef,@Words) = split/:/; # The first element is the number of times
1904: # the word appears. We do not need it now.
1905: for (my $i=0;$i<=$#Words;$i++) {
1906: ($Words[$i],undef)= split/\,/,$Words[$i];
1.20 www 1907: }
1908: }
1.46 matthew 1909: untie %thesaurus_db;
1910: return @Words;
1.14 harris41 1911: }
1.46 matthew 1912:
1.112 bowersj2 1913: =pod
1914:
1915: =back
1916:
1917: =cut
1.61 www 1918:
1919: # -------------------------------------------------------------- Plaintext name
1.81 albertel 1920: =pod
1921:
1.112 bowersj2 1922: =head1 User Name Functions
1923:
1924: =over 4
1925:
1.226 albertel 1926: =item * plainname($uname,$udom,$first)
1.81 albertel 1927:
1.112 bowersj2 1928: Takes a users logon name and returns it as a string in
1.226 albertel 1929: "first middle last generation" form
1930: if $first is set to 'lastname' then it returns it as
1931: 'lastname generation, firstname middlename' if their is a lastname
1.81 albertel 1932:
1933: =cut
1.61 www 1934:
1.295 www 1935:
1.81 albertel 1936: ###############################################################
1.61 www 1937: sub plainname {
1.226 albertel 1938: my ($uname,$udom,$first)=@_;
1.295 www 1939: my %names=&getnames($uname,$udom);
1.226 albertel 1940: my $name=&Apache::lonnet::format_name($names{'firstname'},
1941: $names{'middlename'},
1942: $names{'lastname'},
1943: $names{'generation'},$first);
1944: $name=~s/^\s+//;
1.62 www 1945: $name=~s/\s+$//;
1946: $name=~s/\s+/ /g;
1.190 albertel 1947: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1.62 www 1948: return $name;
1.61 www 1949: }
1.66 www 1950:
1951: # -------------------------------------------------------------------- Nickname
1.81 albertel 1952: =pod
1953:
1.112 bowersj2 1954: =item * nickname($uname,$udom)
1.81 albertel 1955:
1956: Gets a users name and returns it as a string as
1957:
1958: ""nickname""
1.66 www 1959:
1.81 albertel 1960: if the user has a nickname or
1961:
1962: "first middle last generation"
1963:
1964: if the user does not
1965:
1966: =cut
1.66 www 1967:
1968: sub nickname {
1969: my ($uname,$udom)=@_;
1.295 www 1970: my %names=&getnames($uname,$udom);
1.68 albertel 1971: my $name=$names{'nickname'};
1.66 www 1972: if ($name) {
1973: $name='"'.$name.'"';
1974: } else {
1975: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1976: $names{'lastname'}.' '.$names{'generation'};
1977: $name=~s/\s+$//;
1978: $name=~s/\s+/ /g;
1979: }
1980: return $name;
1981: }
1982:
1.295 www 1983: sub getnames {
1984: my ($uname,$udom)=@_;
1985: my $id=$uname.':'.$udom;
1986: my ($names,$cached)=&Apache::lonnet::is_cached_new('namescache',$id);
1987: if ($cached) {
1988: return %{$names};
1989: } else {
1990: my %loadnames=&Apache::lonnet::get('environment',
1991: ['firstname','middlename','lastname','generation','nickname'],
1992: $udom,$uname);
1993: &Apache::lonnet::do_cache_new('namescache',$id,\%loadnames);
1994: return %loadnames;
1995: }
1996: }
1.61 www 1997:
1998: # ------------------------------------------------------------------ Screenname
1.81 albertel 1999:
2000: =pod
2001:
1.112 bowersj2 2002: =item * screenname($uname,$udom)
1.81 albertel 2003:
2004: Gets a users screenname and returns it as a string
2005:
2006: =cut
1.61 www 2007:
2008: sub screenname {
2009: my ($uname,$udom)=@_;
1.258 albertel 2010: if ($uname eq $env{'user.name'} &&
2011: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
1.212 albertel 2012: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1.68 albertel 2013: return $names{'screenname'};
1.62 www 2014: }
2015:
1.212 albertel 2016:
1.62 www 2017: # ------------------------------------------------------------- Message Wrapper
2018:
2019: sub messagewrapper {
1.200 matthew 2020: my ($link,$username,$domain)=@_;
1.62 www 2021: return
1.200 matthew 2022: '<a href="/adm/email?compose=individual&'.
2023: 'recname='.$username.'&recdom='.$domain.'" '.
2024: 'title="'.&mt('Send message').'">'.$link.'</a>';
1.74 www 2025: }
2026: # --------------------------------------------------------------- Notes Wrapper
2027:
2028: sub noteswrapper {
2029: my ($link,$un,$do)=@_;
2030: return
2031: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1.62 www 2032: }
2033: # ------------------------------------------------------------- Aboutme Wrapper
2034:
2035: sub aboutmewrapper {
1.166 www 2036: my ($link,$username,$domain,$target)=@_;
1.205 www 2037: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1.200 matthew 2038: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1.62 www 2039: }
2040:
2041: # ------------------------------------------------------------ Syllabus Wrapper
2042:
2043:
2044: sub syllabuswrapper {
1.109 matthew 2045: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
2046: if ($fontcolor) {
2047: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
2048: }
1.208 matthew 2049: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1.61 www 2050: }
1.14 harris41 2051:
1.208 matthew 2052: sub track_student_link {
1.268 albertel 2053: my ($linktext,$sname,$sdom,$target,$start) = @_;
2054: my $link ="/adm/trackstudent?";
1.208 matthew 2055: my $title = 'View recent activity';
2056: if (defined($sname) && $sname !~ /^\s*$/ &&
2057: defined($sdom) && $sdom !~ /^\s*$/) {
1.268 albertel 2058: $link .= "selected_student=$sname:$sdom";
1.208 matthew 2059: $title .= ' of this student';
1.268 albertel 2060: }
1.208 matthew 2061: if (defined($target) && $target !~ /^\s*$/) {
2062: $target = qq{target="$target"};
2063: } else {
2064: $target = '';
2065: }
1.268 albertel 2066: if ($start) { $link.='&start='.$start; }
1.208 matthew 2067: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2068: }
2069:
1.112 bowersj2 2070: =pod
2071:
2072: =back
2073:
2074: =head1 Access .tab File Data
2075:
2076: =over 4
2077:
2078: =item * languageids()
2079:
2080: returns list of all language ids
2081:
2082: =cut
2083:
1.14 harris41 2084: sub languageids {
1.16 harris41 2085: return sort(keys(%language));
1.14 harris41 2086: }
2087:
1.112 bowersj2 2088: =pod
2089:
2090: =item * languagedescription()
2091:
2092: returns description of a specified language id
2093:
2094: =cut
2095:
1.14 harris41 2096: sub languagedescription {
1.125 www 2097: my $code=shift;
2098: return ($supported_language{$code}?'* ':'').
2099: $language{$code}.
1.126 www 2100: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1.145 www 2101: }
2102:
2103: sub plainlanguagedescription {
2104: my $code=shift;
2105: return $language{$code};
2106: }
2107:
2108: sub supportedlanguagecode {
2109: my $code=shift;
2110: return $supported_language{$code};
1.97 www 2111: }
2112:
1.112 bowersj2 2113: =pod
2114:
2115: =item * copyrightids()
2116:
2117: returns list of all copyrights
2118:
2119: =cut
2120:
2121: sub copyrightids {
2122: return sort(keys(%cprtag));
2123: }
2124:
2125: =pod
2126:
2127: =item * copyrightdescription()
2128:
2129: returns description of a specified copyright id
2130:
2131: =cut
2132:
2133: sub copyrightdescription {
1.166 www 2134: return &mt($cprtag{shift(@_)});
1.112 bowersj2 2135: }
1.197 matthew 2136:
2137: =pod
2138:
1.192 taceyjo1 2139: =item * source_copyrightids()
2140:
2141: returns list of all source copyrights
2142:
2143: =cut
2144:
2145: sub source_copyrightids {
2146: return sort(keys(%scprtag));
2147: }
2148:
2149: =pod
2150:
2151: =item * source_copyrightdescription()
2152:
2153: returns description of a specified source copyright id
2154:
2155: =cut
2156:
2157: sub source_copyrightdescription {
2158: return &mt($scprtag{shift(@_)});
2159: }
1.112 bowersj2 2160:
2161: =pod
2162:
2163: =item * filecategories()
2164:
2165: returns list of all file categories
2166:
2167: =cut
2168:
2169: sub filecategories {
2170: return sort(keys(%category_extensions));
2171: }
2172:
2173: =pod
2174:
2175: =item * filecategorytypes()
2176:
2177: returns list of file types belonging to a given file
2178: category
2179:
2180: =cut
2181:
2182: sub filecategorytypes {
2183: return @{$category_extensions{lc($_[0])}};
2184: }
2185:
2186: =pod
2187:
2188: =item * fileembstyle()
2189:
2190: returns embedding style for a specified file type
2191:
2192: =cut
2193:
2194: sub fileembstyle {
2195: return $fe{lc(shift(@_))};
1.169 www 2196: }
2197:
2198:
2199: sub filecategoryselect {
2200: my ($name,$value)=@_;
1.189 matthew 2201: return &select_form($value,$name,
1.169 www 2202: '' => &mt('Any category'),
2203: map { $_,$_ } sort(keys(%category_extensions)));
1.112 bowersj2 2204: }
2205:
2206: =pod
2207:
2208: =item * filedescription()
2209:
2210: returns description for a specified file type
2211:
2212: =cut
2213:
2214: sub filedescription {
1.188 matthew 2215: my $file_description = $fd{lc(shift())};
2216: $file_description =~ s:([\[\]]):~$1:g;
2217: return &mt($file_description);
1.112 bowersj2 2218: }
2219:
2220: =pod
2221:
2222: =item * filedescriptionex()
2223:
2224: returns description for a specified file type with
2225: extra formatting
2226:
2227: =cut
2228:
2229: sub filedescriptionex {
2230: my $ex=shift;
1.188 matthew 2231: my $file_description = $fd{lc($ex)};
2232: $file_description =~ s:([\[\]]):~$1:g;
2233: return '.'.$ex.' '.&mt($file_description);
1.112 bowersj2 2234: }
2235:
2236: # End of .tab access
2237: =pod
2238:
2239: =back
2240:
2241: =cut
2242:
2243: # ------------------------------------------------------------------ File Types
2244: sub fileextensions {
2245: return sort(keys(%fe));
2246: }
2247:
1.97 www 2248: # ----------------------------------------------------------- Display Languages
2249: # returns a hash with all desired display languages
2250: #
2251:
2252: sub display_languages {
2253: my %languages=();
1.118 www 2254: foreach (&preferred_languages()) {
2255: $languages{$_}=1;
1.97 www 2256: }
2257: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
1.258 albertel 2258: if ($env{'form.displaylanguage'}) {
2259: foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
1.97 www 2260: $languages{$_}=1;
2261: }
2262: }
2263: return %languages;
1.14 harris41 2264: }
2265:
1.117 www 2266: sub preferred_languages {
2267: my @languages=();
1.258 albertel 2268: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
1.117 www 2269: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
1.258 albertel 2270: $env{'course.'.$env{'request.course.id'}.'.languages'}));
1.177 www 2271: }
1.258 albertel 2272: if ($env{'environment.languages'}) {
2273: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
1.118 www 2274: }
1.162 www 2275: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2276: if ($browser) {
2277: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2278: }
1.258 albertel 2279: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
1.118 www 2280: @languages=(@languages,
1.258 albertel 2281: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
1.118 www 2282: }
1.258 albertel 2283: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
1.118 www 2284: @languages=(@languages,
1.258 albertel 2285: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
1.118 www 2286: }
2287: if ($Apache::lonnet::domain_lang_def{
2288: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2289: @languages=(@languages,
2290: $Apache::lonnet::domain_lang_def{
2291: $Apache::lonnet::perlvar{'lonDefDomain'}});
2292: }
2293: # turn "en-ca" into "en-ca,en"
2294: my @genlanguages;
2295: foreach (@languages) {
2296: unless ($_=~/\w/) { next; }
2297: push (@genlanguages,$_);
2298: if ($_=~/(\-|\_)/) {
2299: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2300: }
2301: }
2302: return @genlanguages;
1.117 www 2303: }
2304:
1.112 bowersj2 2305: ###############################################################
2306: ## Student Answer Attempts ##
2307: ###############################################################
2308:
2309: =pod
2310:
2311: =head1 Alternate Problem Views
2312:
2313: =over 4
2314:
2315: =item * get_previous_attempt($symb, $username, $domain, $course,
2316: $getattempt, $regexp, $gradesub)
2317:
2318: Return string with previous attempt on problem. Arguments:
2319:
2320: =over 4
2321:
2322: =item * $symb: Problem, including path
2323:
2324: =item * $username: username of the desired student
2325:
2326: =item * $domain: domain of the desired student
1.14 harris41 2327:
1.112 bowersj2 2328: =item * $course: Course ID
1.14 harris41 2329:
1.112 bowersj2 2330: =item * $getattempt: Leave blank for all attempts, otherwise put
2331: something
1.14 harris41 2332:
1.112 bowersj2 2333: =item * $regexp: if string matches this regexp, the string will be
2334: sent to $gradesub
1.14 harris41 2335:
1.112 bowersj2 2336: =item * $gradesub: routine that processes the string if it matches $regexp
1.14 harris41 2337:
1.112 bowersj2 2338: =back
1.14 harris41 2339:
1.112 bowersj2 2340: The output string is a table containing all desired attempts, if any.
1.16 harris41 2341:
1.112 bowersj2 2342: =cut
1.1 albertel 2343:
2344: sub get_previous_attempt {
1.43 ng 2345: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
1.1 albertel 2346: my $prevattempts='';
1.43 ng 2347: no strict 'refs';
1.1 albertel 2348: if ($symb) {
1.3 albertel 2349: my (%returnhash)=
2350: &Apache::lonnet::restore($symb,$course,$domain,$username);
1.1 albertel 2351: if ($returnhash{'version'}) {
2352: my %lasthash=();
2353: my $version;
2354: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.19 harris41 2355: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
1.1 albertel 2356: $lasthash{$_}=$returnhash{$version.':'.$_};
1.19 harris41 2357: }
1.1 albertel 2358: }
1.43 ng 2359: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
1.40 ng 2360: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
1.16 harris41 2361: foreach (sort(keys %lasthash)) {
1.31 albertel 2362: my ($ign,@parts) = split(/\./,$_);
1.41 ng 2363: if ($#parts > 0) {
1.31 albertel 2364: my $data=$parts[-1];
2365: pop(@parts);
1.40 ng 2366: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
1.31 albertel 2367: } else {
1.41 ng 2368: if ($#parts == 0) {
2369: $prevattempts.='<th>'.$parts[0].'</th>';
2370: } else {
2371: $prevattempts.='<th>'.$ign.'</th>';
2372: }
1.31 albertel 2373: }
1.16 harris41 2374: }
1.40 ng 2375: if ($getattempt eq '') {
2376: for ($version=1;$version<=$returnhash{'version'};$version++) {
2377: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2378: foreach (sort(keys %lasthash)) {
2379: my $value;
2380: if ($_ =~ /timestamp/) {
2381: $value=scalar(localtime($returnhash{$version.':'.$_}));
2382: } else {
2383: $value=$returnhash{$version.':'.$_};
2384: }
1.142 albertel 2385: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
1.40 ng 2386: }
2387: }
1.1 albertel 2388: }
1.40 ng 2389: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
1.16 harris41 2390: foreach (sort(keys %lasthash)) {
1.5 albertel 2391: my $value;
2392: if ($_ =~ /timestamp/) {
2393: $value=scalar(localtime($lasthash{$_}));
2394: } else {
2395: $value=$lasthash{$_};
2396: }
1.142 albertel 2397: $value=&Apache::lonnet::unescape($value);
1.49 ng 2398: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
1.40 ng 2399: $prevattempts.='<td>'.$value.' </td>';
1.16 harris41 2400: }
1.40 ng 2401: $prevattempts.='</tr></table></td></tr></table>';
1.1 albertel 2402: } else {
2403: $prevattempts='Nothing submitted - no attempts.';
2404: }
2405: } else {
2406: $prevattempts='No data.';
2407: }
1.10 albertel 2408: }
2409:
1.107 albertel 2410: sub relative_to_absolute {
2411: my ($url,$output)=@_;
2412: my $parser=HTML::TokeParser->new(\$output);
2413: my $token;
2414: my $thisdir=$url;
2415: my @rlinks=();
2416: while ($token=$parser->get_token) {
2417: if ($token->[0] eq 'S') {
2418: if ($token->[1] eq 'a') {
2419: if ($token->[2]->{'href'}) {
2420: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2421: }
2422: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2423: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2424: } elsif ($token->[1] eq 'base') {
2425: $thisdir=$token->[2]->{'href'};
2426: }
2427: }
2428: }
2429: $thisdir=~s-/[^/]*$--;
2430: foreach (@rlinks) {
2431: unless (($_=~/^http:\/\//i) ||
2432: ($_=~/^\//) ||
2433: ($_=~/^javascript:/i) ||
2434: ($_=~/^mailto:/i) ||
2435: ($_=~/^\#/)) {
2436: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2437: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2438: }
2439: }
2440: # -------------------------------------------------- Deal with Applet codebases
2441: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2442: return $output;
2443: }
2444:
1.112 bowersj2 2445: =pod
2446:
2447: =item * get_student_view
2448:
2449: show a snapshot of what student was looking at
2450:
2451: =cut
2452:
1.10 albertel 2453: sub get_student_view {
1.186 albertel 2454: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
1.114 www 2455: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
1.186 albertel 2456: my (%form);
1.10 albertel 2457: my @elements=('symb','courseid','domain','username');
2458: foreach my $element (@elements) {
1.186 albertel 2459: $form{'grade_'.$element}=eval '$'.$element #'
1.10 albertel 2460: }
1.186 albertel 2461: if (defined($moreenv)) {
2462: %form=(%form,%{$moreenv});
2463: }
1.236 albertel 2464: if (defined($target)) { $form{'grade_target'} = $target; }
1.107 albertel 2465: $feedurl=&Apache::lonnet::clutter($feedurl);
1.186 albertel 2466: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
1.11 albertel 2467: $userview=~s/\<body[^\>]*\>//gi;
2468: $userview=~s/\<\/body\>//gi;
2469: $userview=~s/\<html\>//gi;
2470: $userview=~s/\<\/html\>//gi;
2471: $userview=~s/\<head\>//gi;
2472: $userview=~s/\<\/head\>//gi;
2473: $userview=~s/action\s*\=/would_be_action\=/gi;
1.107 albertel 2474: $userview=&relative_to_absolute($feedurl,$userview);
1.11 albertel 2475: return $userview;
2476: }
2477:
1.112 bowersj2 2478: =pod
2479:
2480: =item * get_student_answers()
2481:
2482: show a snapshot of how student was answering problem
2483:
2484: =cut
2485:
1.11 albertel 2486: sub get_student_answers {
1.100 sakharuk 2487: my ($symb,$username,$domain,$courseid,%form) = @_;
1.114 www 2488: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
1.186 albertel 2489: my (%moreenv);
1.11 albertel 2490: my @elements=('symb','courseid','domain','username');
2491: foreach my $element (@elements) {
1.186 albertel 2492: $moreenv{'grade_'.$element}=eval '$'.$element #'
1.10 albertel 2493: }
1.186 albertel 2494: $moreenv{'grade_target'}='answer';
2495: %moreenv=(%form,%moreenv);
2496: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
1.10 albertel 2497: return $userview;
1.1 albertel 2498: }
1.116 albertel 2499:
2500: =pod
2501:
2502: =item * &submlink()
2503:
1.242 albertel 2504: Inputs: $text $uname $udom $symb $target
1.116 albertel 2505:
2506: Returns: A link to grades.pm such as to see the SUBM view of a student
2507:
2508: =cut
2509:
2510: ###############################################
2511: sub submlink {
1.242 albertel 2512: my ($text,$uname,$udom,$symb,$target)=@_;
1.116 albertel 2513: if (!($uname && $udom)) {
2514: (my $cursymb, my $courseid,$udom,$uname)=
2515: &Apache::lonxml::whichuser($symb);
2516: if (!$symb) { $symb=$cursymb; }
2517: }
1.254 matthew 2518: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
1.242 albertel 2519: $symb=&Apache::lonnet::escape($symb);
2520: if ($target) { $target="target=\"$target\""; }
2521: return '<a href="/adm/grades?&command=submission&'.
2522: 'symb='.$symb.'&student='.$uname.
2523: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2524: }
2525: ##############################################
2526:
2527: =pod
2528:
2529: =item * &pgrdlink()
2530:
2531: Inputs: $text $uname $udom $symb $target
2532:
2533: Returns: A link to grades.pm such as to see the PGRD view of a student
2534:
2535: =cut
2536:
2537: ###############################################
2538: sub pgrdlink {
2539: my $link=&submlink(@_);
2540: $link=~s/(&command=submission)/$1&showgrading=yes/;
2541: return $link;
2542: }
2543: ##############################################
2544:
2545: =pod
2546:
2547: =item * &pprmlink()
2548:
2549: Inputs: $text $uname $udom $symb $target
2550:
2551: Returns: A link to parmset.pm such as to see the PPRM view of a
1.283 albertel 2552: student and a specific resource
1.242 albertel 2553:
2554: =cut
2555:
2556: ###############################################
2557: sub pprmlink {
2558: my ($text,$uname,$udom,$symb,$target)=@_;
2559: if (!($uname && $udom)) {
2560: (my $cursymb, my $courseid,$udom,$uname)=
2561: &Apache::lonxml::whichuser($symb);
2562: if (!$symb) { $symb=$cursymb; }
2563: }
1.254 matthew 2564: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
1.242 albertel 2565: $symb=&Apache::lonnet::escape($symb);
2566: if ($target) { $target="target=\"$target\""; }
2567: return '<a href="/adm/parmset?&command=set&'.
2568: 'symb='.$symb.'&uname='.$uname.
2569: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
1.116 albertel 2570: }
2571: ##############################################
1.37 matthew 2572:
1.112 bowersj2 2573: =pod
2574:
2575: =back
2576:
2577: =cut
2578:
1.37 matthew 2579: ###############################################
1.51 www 2580:
2581:
2582: sub timehash {
2583: my @ltime=localtime(shift);
2584: return ( 'seconds' => $ltime[0],
2585: 'minutes' => $ltime[1],
2586: 'hours' => $ltime[2],
2587: 'day' => $ltime[3],
2588: 'month' => $ltime[4]+1,
2589: 'year' => $ltime[5]+1900,
2590: 'weekday' => $ltime[6],
2591: 'dayyear' => $ltime[7]+1,
2592: 'dlsav' => $ltime[8] );
2593: }
2594:
2595: sub maketime {
2596: my %th=@_;
2597: return POSIX::mktime(
2598: ($th{'seconds'},$th{'minutes'},$th{'hours'},
1.210 www 2599: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
1.70 www 2600: }
2601:
2602: #########################################
1.51 www 2603:
2604: sub findallcourses {
2605: my %courses=();
2606: my $now=time;
1.258 albertel 2607: foreach (keys %env) {
1.51 www 2608: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
1.258 albertel 2609: my ($starttime,$endtime)=$env{$_};
1.51 www 2610: my $active=1;
2611: if ($starttime) {
2612: if ($now<$starttime) { $active=0; }
2613: }
2614: if ($endtime) {
2615: if ($now>$endtime) { $active=0; }
2616: }
2617: if ($active) { $courses{$1.'_'.$2}=1; }
2618: }
2619: }
2620: return keys %courses;
2621: }
1.37 matthew 2622:
1.54 www 2623: ###############################################
1.60 matthew 2624: ###############################################
2625:
2626: =pod
2627:
1.112 bowersj2 2628: =head1 Domain Template Functions
2629:
2630: =over 4
2631:
2632: =item * &determinedomain()
1.60 matthew 2633:
2634: Inputs: $domain (usually will be undef)
2635:
1.63 www 2636: Returns: Determines which domain should be used for designs
1.60 matthew 2637:
2638: =cut
1.54 www 2639:
1.60 matthew 2640: ###############################################
1.63 www 2641: sub determinedomain {
2642: my $domain=shift;
2643: if (! $domain) {
1.60 matthew 2644: # Determine domain if we have not been given one
2645: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
1.258 albertel 2646: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2647: if ($env{'request.role.domain'}) {
2648: $domain=$env{'request.role.domain'};
1.60 matthew 2649: }
2650: }
1.63 www 2651: return $domain;
2652: }
2653: ###############################################
2654: =pod
2655:
1.112 bowersj2 2656: =item * &domainlogo()
1.63 www 2657:
2658: Inputs: $domain (usually will be undef)
2659:
2660: Returns: A link to a domain logo, if the domain logo exists.
2661: If the domain logo does not exist, a description of the domain.
2662:
2663: =cut
1.112 bowersj2 2664:
1.63 www 2665: ###############################################
2666: sub domainlogo {
2667: my $domain = &determinedomain(shift);
2668: # See if there is a logo
1.59 www 2669: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
1.215 albertel 2670: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2671: return '<img src="'.$logo.'" alt="'.$domain.'" />';
1.60 matthew 2672: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2673: return $Apache::lonnet::domaindescription{$domain};
1.59 www 2674: } else {
1.60 matthew 2675: return '';
1.59 www 2676: }
2677: }
1.63 www 2678: ##############################################
2679:
2680: =pod
2681:
1.112 bowersj2 2682: =item * &designparm()
1.63 www 2683:
2684: Inputs: $which parameter; $domain (usually will be undef)
2685:
2686: Returns: value of designparamter $which
2687:
2688: =cut
1.112 bowersj2 2689:
1.63 www 2690: ##############################################
2691: sub designparm {
2692: my ($which,$domain)=@_;
1.258 albertel 2693: if ($env{'browser.blackwhite'} eq 'on') {
1.110 www 2694: if ($which=~/\.(font|alink|vlink|link)$/) {
2695: return '#000000';
2696: }
2697: if ($which=~/\.(pgbg|sidebg)$/) {
2698: return '#FFFFFF';
2699: }
2700: if ($which=~/\.tabbg$/) {
2701: return '#CCCCCC';
2702: }
2703: }
1.258 albertel 2704: if ($env{'environment.color.'.$which}) {
2705: return $env{'environment.color.'.$which};
1.96 www 2706: }
1.63 www 2707: $domain=&determinedomain($domain);
2708: if ($designhash{$domain.'.'.$which}) {
2709: return $designhash{$domain.'.'.$which};
2710: } else {
2711: return $designhash{'default.'.$which};
2712: }
2713: }
1.59 www 2714:
1.60 matthew 2715: ###############################################
2716: ###############################################
2717:
2718: =pod
2719:
1.112 bowersj2 2720: =back
2721:
2722: =head1 HTTP Helpers
2723:
2724: =over 4
2725:
2726: =item * &bodytag()
1.60 matthew 2727:
2728: Returns a uniform header for LON-CAPA web pages.
2729:
2730: Inputs:
2731:
1.112 bowersj2 2732: =over 4
2733:
2734: =item * $title, A title to be displayed on the page.
2735:
2736: =item * $function, the current role (can be undef).
2737:
2738: =item * $addentries, extra parameters for the <body> tag.
2739:
2740: =item * $bodyonly, if defined, only return the <body> tag.
2741:
2742: =item * $domain, if defined, force a given domain.
2743:
2744: =item * $forcereg, if page should register as content page (relevant for
1.86 www 2745: text interface only)
1.60 matthew 2746:
1.326 albertel 2747: =item * $customtitle, alternate text to use instead of $title
2748: in the title box that appears, this text
2749: is not auto translated like the $title is
1.309 albertel 2750:
2751: =item * $notopbar, if true, keep the 'what is this' info but remove the
2752: navigational links
1.317 albertel 2753:
2754: =item * $bgcolor, used to override the bg coor on a webpage to a specific value
2755:
1.112 bowersj2 2756: =back
2757:
1.60 matthew 2758: Returns: A uniform header for LON-CAPA web pages.
2759: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2760: If $bodyonly is undef or zero, an html string containing a <body> tag and
2761: other decorations will be returned.
2762:
2763: =cut
2764:
1.54 www 2765: sub bodytag {
1.309 albertel 2766: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,
1.315 albertel 2767: $notopbar,$bgcolor)=@_;
1.117 www 2768: $title=&mt($title);
1.183 matthew 2769: $function = &get_users_function() if (!$function);
1.63 www 2770: my $img=&designparm($function.'.img',$domain);
1.315 albertel 2771: my $pgbg= $bgcolor || &designparm($function.'.pgbg',$domain);
1.63 www 2772: my $tabbg=&designparm($function.'.tabbg',$domain);
2773: my $font=&designparm($function.'.font',$domain);
2774: my $link=&designparm($function.'.link',$domain);
2775: my $alink=&designparm($function.'.alink',$domain);
2776: my $vlink=&designparm($function.'.vlink',$domain);
2777: my $sidebg=&designparm($function.'.sidebg',$domain);
1.110 www 2778: # Accessibility font enhance
1.146 www 2779: my $addstyle='';
1.258 albertel 2780: if ($env{'browser.fontenhance'} eq 'on') {
1.146 www 2781: $addstyle=' font-size: x-large;';
1.110 www 2782: }
1.63 www 2783: # role and realm
1.55 www 2784: my ($role,$realm)
1.258 albertel 2785: =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
1.55 www 2786: # realm
1.258 albertel 2787: if ($env{'request.course.id'}) {
1.55 www 2788: $realm=
1.258 albertel 2789: $env{'course.'.$env{'request.course.id'}.'.description'};
1.54 www 2790: }
1.55 www 2791: unless ($realm) { $realm=' '; }
2792: # Set messages
1.60 matthew 2793: my $messages=&domainlogo($domain);
1.101 www 2794: # Port for miniserver
1.83 albertel 2795: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2796: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1.330 albertel 2797:
2798: my $extra_body_attr = &make_attr_string($forcereg,$addentries);
1.329 albertel 2799:
1.101 www 2800: # construct main body tag
1.60 matthew 2801: my $bodytag = <<END;
1.231 albertel 2802: <style type="text/css">
1.147 www 2803: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
1.146 www 2804: a:focus { color: red; background: yellow }
1.285 albertel 2805: table.thinborder { border-collapse: collapse; }
1.289 albertel 2806: table.thinborder tr th, table.thinborder tr td { border-style: solid; border-width: 1px}
2807: form, .inline { display: inline; }
1.285 albertel 2808: .center { text-align: center; }
1.304 banghart 2809: .filename {font-family: monospace;}
1.146 www 2810: </style>
1.54 www 2811: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
1.329 albertel 2812: style="margin-top: 0px;$addstyle" $extra_body_attr>
1.60 matthew 2813: END
1.330 albertel 2814:
2815: $bodytag .= &Apache::lontexconvert::init_math_support();
1.252 albertel 2816:
1.94 www 2817: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
1.150 matthew 2818: $lonhttpdPort.$img.'" alt="'.$function.'" />';
1.332 ! albertel 2819: if ($bodyonly
! 2820: || ($env{'request.state'} eq 'construct'
! 2821: && $env{'environment.remote'} ne 'off' )) {
1.60 matthew 2822: return $bodytag;
1.258 albertel 2823: } elsif ($env{'browser.interface'} eq 'textual') {
1.95 www 2824: # Accessibility
1.224 raeburn 2825:
1.93 www 2826: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2827: $forcereg).
2828: '<h1>LON-CAPA: '.$title.'</h1>';
1.258 albertel 2829: } elsif ($env{'environment.remote'} eq 'off') {
1.95 www 2830: # No Remote
1.206 albertel 2831: my $roleinfo=(<<ENDROLE);
2832: <td bgcolor="$tabbg" align="right">
2833: <font size="2" face="Arial, Helvetica, sans-serif">
1.258 albertel 2834: $env{'environment.firstname'}
2835: $env{'environment.middlename'}
2836: $env{'environment.lastname'}
2837: $env{'environment.generation'}
1.206 albertel 2838: </font>
2839: <br />
2840: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2841: <br />
2842: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2843: </td>
2844: ENDROLE
1.224 raeburn 2845: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
1.229 albertel 2846: $font.'"><b>'.$title.'</b></font>';
1.224 raeburn 2847: if ($customtitle) {
2848: $titleinfo = $customtitle;
1.235 raeburn 2849: }
2850:
1.258 albertel 2851: if ($env{'request.state'} eq 'construct') {
1.229 albertel 2852: my ($uname,$thisdisfn)=
1.258 albertel 2853: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
1.229 albertel 2854: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2855: $formaction=~s/\/+/\//g;
1.237 raeburn 2856: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2857: my $parentpath = '';
1.241 raeburn 2858: my $lastitem = '';
2859: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
1.235 raeburn 2860: $parentpath = $1;
1.241 raeburn 2861: $lastitem = $2;
2862: } else {
2863: $lastitem = $thisdisfn;
1.235 raeburn 2864: }
2865: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2866: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2867: '<form name="dirs" method="post" action="'.$formaction
2868: .'" target="_top"><tt><b>'
1.241 raeburn 2869: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
1.235 raeburn 2870: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2871: .'</form>'
2872: .&Apache::lonmenu::constspaceform();
1.229 albertel 2873:
1.235 raeburn 2874: }
2875: $forcereg=1;
2876: }
2877: my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2878: 'cellspacing="3" cellpadding="3">'.
1.270 albertel 2879: '<tr><td bgcolor="'.$tabbg.'">'.
1.235 raeburn 2880: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
1.258 albertel 2881: if ($env{'request.state'} eq 'construct') {
1.272 raeburn 2882: if ($notopbar) {
2883: $bodytag .= $titletable;
2884: } else {
2885: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
2886: }
1.235 raeburn 2887: } else {
1.272 raeburn 2888: if ($notopbar) {
2889: $bodytag .= $titletable;
2890: } else {
2891: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
1.235 raeburn 2892: $titletable;
1.272 raeburn 2893: }
1.235 raeburn 2894: }
2895: return $bodytag;
1.94 www 2896: }
1.95 www 2897:
1.93 www 2898: #
1.95 www 2899: # Top frame rendering, Remote is up
1.93 www 2900: #
1.224 raeburn 2901: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2902: if ($customtitle) {
2903: $titleinfo = $customtitle;
2904: }
1.245 matthew 2905: #
2906: # Extra info if you are the DC
2907: my $dc_info = '';
1.258 albertel 2908: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2909: $env{'course.'.$env{'request.course.id'}.
1.245 matthew 2910: '.domain'}.'/'})) {
1.258 albertel 2911: my $cid = $env{'request.course.id'};
2912: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
1.245 matthew 2913: $dc_info = '('.$dc_info.')';
2914: }
1.305 www 2915: # Explicit link to get inline menu
2916: my $menu='<br /><font size="2" face="Arial, Helvetica, sans-serif"> <a href="/adm/remote?action=collapse">'.&mt('Switch to Inline Menu Mode').'</a></font>';
1.245 matthew 2917: #
1.94 www 2918: return(<<ENDBODY);
1.60 matthew 2919: $bodytag
1.296 albertel 2920: <table width="100%" cellspacing="0" border="0" cellpadding="0">
1.95 www 2921: <tr><td bgcolor="$sidebg">
1.94 www 2922: $upperleft</td>
1.95 www 2923: <td bgcolor="$sidebg" align="right">$messages </td>
1.55 www 2924: </tr>
1.54 www 2925: <tr>
1.55 www 2926: <td rowspan="3" bgcolor="$tabbg">
1.305 www 2927: $titleinfo $dc_info $menu
1.257 matthew 2928: </td><td bgcolor="$tabbg" align="right">
1.146 www 2929: <font size="2" face="Arial, Helvetica, sans-serif">
1.258 albertel 2930: $env{'environment.firstname'}
2931: $env{'environment.middlename'}
2932: $env{'environment.lastname'}
2933: $env{'environment.generation'}
1.55 www 2934: </font>
1.54 www 2935: </td>
2936: </tr>
2937: <tr><td bgcolor="$tabbg" align="right">
1.146 www 2938: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
1.54 www 2939: </td></tr>
1.55 www 2940: <tr>
1.148 www 2941: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
1.202 albertel 2942: </table><br />
1.54 www 2943: ENDBODY
1.182 matthew 2944: }
2945:
1.330 albertel 2946: sub make_attr_string {
2947: my ($register,$attr_ref) = @_;
2948:
2949: if ($attr_ref && !ref($attr_ref)) {
2950: die("addentries Must be a hash ref ".
2951: join(':',caller(1))." ".
2952: join(':',caller(0))." ");
2953: }
2954:
2955: if ($register) {
2956: $attr_ref->{'onload'} = &Apache::lonmenu::loadevents().
2957: $attr_ref->{'onload'};
2958: $attr_ref->{'onunload'} = &Apache::lonmenu::unloadevents().
2959: $attr_ref->{'onunload'};
2960: }
2961: my $attr_string;
2962: foreach my $attr (keys(%$attr_ref)) {
2963: $attr_string .= " $attr=\"".$attr_ref->{$attr}.'" ';
2964: }
2965: return $attr_string;
2966: }
2967:
2968:
1.182 matthew 2969: ###############################################
1.251 albertel 2970: ###############################################
2971:
2972: =pod
2973:
2974: =back
2975:
1.306 albertel 2976: =head1 HTML Helpers
1.251 albertel 2977:
2978: =over 4
2979:
2980: =item * &endbodytag()
2981:
2982: Returns a uniform footer for LON-CAPA web pages.
2983:
1.306 albertel 2984: Inputs: none
1.251 albertel 2985:
2986: =back
2987:
2988: =cut
2989:
2990: sub endbodytag {
2991: my $endbodytag='</body>';
1.269 albertel 2992: $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
1.315 albertel 2993: if ( exists( $env{'internal.head.redirect'} ) ) {
2994: $endbodytag=
2995: "<br /><a href=\"$env{'internal.head.redirect'}\">".
2996: &mt('Continue').'</a>'.
2997: $endbodytag;
2998: }
1.251 albertel 2999: return $endbodytag;
3000: }
3001:
1.306 albertel 3002: =pod
3003:
3004: =over 4
3005:
3006: =item * &headtag()
3007:
3008: Returns a uniform footer for LON-CAPA web pages.
3009:
1.307 albertel 3010: Inputs: $title - optional title for the head
3011: $head_extra - optional extra HTML to put inside the <head>
1.315 albertel 3012: $args - optional arguments
1.319 albertel 3013: force_register - if is true call registerurl so the remote is
3014: informed
3015:
1.315 albertel 3016: redirect - array ref of seconds before redirect occurs
3017: url to redirect to
3018: (side effect of setting
3019: $env{'internal.head.redirect'} to the url
3020: redirected too)
1.306 albertel 3021: =back
3022:
3023: =cut
3024:
3025: sub headtag {
1.313 albertel 3026: my ($title,$head_extra,$args) = @_;
1.306 albertel 3027:
1.308 albertel 3028: my $result =
3029: '<head>'.
3030: &Apache::lonxml::fontsettings().
3031: &Apache::lonhtmlcommon::htmlareaheaders();
1.319 albertel 3032:
3033: if ($args->{'force_register'}) {
3034: $result .= &Apache::lonmenu::registerurl(1);
3035: }
3036:
1.314 albertel 3037: if (ref($args->{'redirect'})) {
3038: my ($time,$url) = @{$args->{'redirect'}};
1.315 albertel 3039: $url = &Apache::lonenc::check_encrypt($url);
3040: $env{'internal.head.redirect'} = $url;
1.313 albertel 3041: $result.=<<ADDMETA
3042: <meta http-equiv="pragma" content="no-cache" />
1.324 raeburn 3043: <meta HTTP-EQUIV="Refresh" CONTENT="$time; url=$url" />
1.313 albertel 3044: ADDMETA
3045: }
1.306 albertel 3046: if (!defined($title)) {
3047: $title = 'The LearningOnline Network with CAPA';
3048: }
3049:
1.315 albertel 3050: $result .= '<title> LON-CAPA '.&mt($title).'</title>'.$head_extra;
1.306 albertel 3051: return $result;
3052: }
3053:
3054: =pod
3055:
3056: =over 4
3057:
3058: =item * &endheadtag()
3059:
3060: Returns a uniform </head> for LON-CAPA web pages.
3061:
3062: Inputs: none
3063:
3064: =back
3065:
3066: =cut
3067:
3068: sub endheadtag {
3069: return '</head>';
3070: }
3071:
3072: =pod
3073:
3074: =over 4
3075:
3076: =item * &head()
3077:
3078: Returns a uniform complete <head>..</head> section for LON-CAPA web pages.
3079:
3080: Inputs: $title - optional title for the page
1.307 albertel 3081: $head_extra - optional extra HTML to put inside the <head>
1.306 albertel 3082: =back
3083:
3084: =cut
3085:
3086: sub head {
1.325 albertel 3087: my ($title,$head_extra,$args) = @_;
3088: return &headtag($title,$head_extra,$args).&endheadtag();
1.306 albertel 3089: }
3090:
3091: =pod
3092:
3093: =over 4
3094:
3095: =item * &start_page()
3096:
3097: Returns a complete <html> .. <body> section for LON-CAPA web pages.
3098:
3099: Inputs: $title - optional title for the page
3100: $head_extra - optional extra HTML to incude inside the <head>
1.315 albertel 3101: $args - additional optional args supported are:
1.317 albertel 3102: only_body -> is true will set &bodytag() onlybodytag
3103: arg on
3104: no_nav_bar -> is true will set &bodytag() notopbar arg on
3105: add_entries -> additional attributes to add to the <body>
3106: domain -> force to color decorate a page for a
3107: specific domain
3108: function -> force usage of a specific rolish color
3109: scheme
3110: redirect -> see &headtag()
3111: bgcolor -> override the default page bg color
3112: js_ready -> return a string ready for being used in
3113: a javascript writeln
1.320 albertel 3114: html_encode -> return a string ready for being used in
3115: a html attribute
1.317 albertel 3116: force_register -> if is true will turn on the &bodytag()
3117: $forcereg arg
1.326 albertel 3118: body_title -> alternate text to use instead of $title
3119: in the title box that appears, this text
3120: is not auto translated like the $title is
1.330 albertel 3121: frameset -> if true will start with a <frameset>
3122: rather than <body>
1.306 albertel 3123: =back
3124:
3125: =cut
3126:
3127: sub start_page {
1.309 albertel 3128: my ($title,$head_extra,$args) = @_;
1.318 albertel 3129: #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
1.313 albertel 3130: my %head_args;
1.319 albertel 3131: foreach my $arg ('redirect','force_register') {
3132: if (defined($args->{$arg})) {
1.324 raeburn 3133: $head_args{$arg} = $args->{$arg};
1.319 albertel 3134: }
1.313 albertel 3135: }
1.319 albertel 3136:
1.315 albertel 3137: $env{'internal.start_page'}++;
3138: my $result =
1.306 albertel 3139: &Apache::lonxml::xmlbegin().
1.330 albertel 3140: &headtag($title,$head_extra,\%head_args).&endheadtag();
3141: if ($args->{'frameset'}) {
3142: my $attr_string = &make_attr_string($args->{'force_register'},
3143: $args->{'add_entries'});
3144: $result .= "\n<frameset $attr_string>\n";
3145: } else {
3146: $result .=
3147: &bodytag($title,
3148: $args->{'function'}, $args->{'add_entries'},
3149: $args->{'only_body'}, $args->{'domain'},
3150: $args->{'force_register'}, $args->{'body_title'},
3151: $args->{'no_nav_bar'}, $args->{'bgcolor'});
3152: }
1.315 albertel 3153: if ($args->{'js_ready'}) {
1.317 albertel 3154: $result = &js_ready($result);
1.315 albertel 3155: }
1.320 albertel 3156: if ($args->{'html_encode'}) {
3157: $result = &html_encode($result);
3158: }
1.315 albertel 3159: return $result;
1.306 albertel 3160: }
3161:
1.330 albertel 3162:
1.306 albertel 3163: =pod
3164:
3165: =over 4
3166:
3167: =item * &head()
3168:
3169: Returns a complete </body></html> section for LON-CAPA web pages.
3170:
1.315 albertel 3171: Inputs: $args - additional optional args supported are:
3172: js_ready -> return a string ready for being used in
3173: a javascript writeln
1.320 albertel 3174: html_encode -> return a string ready for being used in
3175: a html attribute
1.330 albertel 3176: frameset -> if true will start with a <frameset>
3177: rather than <body>
1.306 albertel 3178: =back
3179:
3180: =cut
3181:
3182: sub end_page {
1.315 albertel 3183: my ($args) = @_;
1.318 albertel 3184: #&Apache::lonnet::logthis("end_page ".join(':',caller(0)));
1.315 albertel 3185: $env{'internal.end_page'}++;
1.330 albertel 3186: my $result;
3187: if ($args->{'frameset'}) {
3188: $result .= '</frameset>';
3189: } else {
3190: $result .= &endbodytag();
3191: }
3192: $result .= "\n</html>";
3193:
1.315 albertel 3194: if ($args->{'js_ready'}) {
1.317 albertel 3195: $result = &js_ready($result);
1.315 albertel 3196: }
1.320 albertel 3197: if ($args->{'html_encode'}) {
3198: $result = &html_encode($result);
3199: }
1.315 albertel 3200: return $result;
3201: }
3202:
1.320 albertel 3203: sub html_encode {
3204: my ($result) = @_;
3205:
1.322 albertel 3206: $result = &HTML::Entities::encode($result,'<>&"');
1.320 albertel 3207:
3208: return $result;
3209: }
1.317 albertel 3210: sub js_ready {
3211: my ($result) = @_;
3212:
1.323 albertel 3213: $result =~ s/[\n\r]/ /xmsg;
3214: $result =~ s/\\/\\\\/xmsg;
3215: $result =~ s/'/\\'/xmsg;
3216: $result =~ s{</script>}{</scrip'+'t>}xmsg;
1.317 albertel 3217:
3218: return $result;
3219: }
3220:
1.315 albertel 3221: sub validate_page {
3222: if ( exists($env{'internal.start_page'})
1.316 albertel 3223: && $env{'internal.start_page'} > 1) {
3224: &Apache::lonnet::logthis('start_page called multiple times '.
1.318 albertel 3225: $env{'internal.start_page'}.' '.
1.316 albertel 3226: $ENV{'request.filename'});
1.315 albertel 3227: }
3228: if ( exists($env{'internal.end_page'})
1.316 albertel 3229: && $env{'internal.end_page'} > 1) {
3230: &Apache::lonnet::logthis('end_page called multiple times '.
1.318 albertel 3231: $env{'internal.end_page'}.' '.
1.316 albertel 3232: $env{'request.filename'});
1.315 albertel 3233: }
3234: if ( exists($env{'internal.start_page'})
3235: && ! exists($env{'internal.end_page'})) {
1.316 albertel 3236: &Apache::lonnet::logthis('start_page called without end_page '.
3237: $env{'request.filename'});
1.315 albertel 3238: }
3239: if ( ! exists($env{'internal.start_page'})
3240: && exists($env{'internal.end_page'})) {
1.316 albertel 3241: &Apache::lonnet::logthis('end_page called without start_page'.
3242: $env{'request.filename'});
1.315 albertel 3243: }
1.306 albertel 3244: }
1.315 albertel 3245:
1.318 albertel 3246: sub simple_error_page {
3247: my ($r,$title,$msg) = @_;
3248: my $page =
3249: &Apache::loncommon::start_page($title).
3250: &mt($msg).
3251: &Apache::loncommon::end_page();
3252: if (ref($r)) {
3253: $r->print($page);
1.327 albertel 3254: return;
1.318 albertel 3255: }
3256: return $page;
3257: }
1.251 albertel 3258: ###############################################
1.182 matthew 3259:
3260: =pod
3261:
1.306 albertel 3262: =over 4
3263:
1.182 matthew 3264: =item get_users_function
3265:
3266: Used by &bodytag to determine the current users primary role.
3267: Returns either 'student','coordinator','admin', or 'author'.
3268:
3269: =cut
3270:
3271: ###############################################
3272: sub get_users_function {
3273: my $function = 'student';
1.258 albertel 3274: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
1.182 matthew 3275: $function='coordinator';
3276: }
1.258 albertel 3277: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
1.182 matthew 3278: $function='admin';
3279: }
1.258 albertel 3280: if (($env{'request.role'}=~/^(au|ca)/) ||
1.182 matthew 3281: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
3282: $function='author';
3283: }
3284: return $function;
1.54 www 3285: }
1.99 www 3286:
3287: ###############################################
3288:
1.233 raeburn 3289: =pod
3290:
1.274 raeburn 3291: =item check_user_status
3292:
3293: Determines current status of supplied role for a
3294: specific user. Roles can be active, previous or future.
3295:
3296: Inputs:
3297: user's domain, user's username, course's domain,
3298: course's number, optional section/group.
3299:
3300: Outputs:
3301: role status: active, previous or future.
3302:
3303: =cut
3304:
3305: sub check_user_status {
3306: my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
3307: my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
3308: my @uroles = keys %userinfo;
3309: my $srchstr;
3310: my $active_chk = 'none';
3311: if (@uroles > 0) {
3312: if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
3313: $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
3314: } else {
3315: $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role; }
3316: if (grep/^$srchstr$/,@uroles) {
3317: my $role_end = 0;
3318: my $role_start = 0;
3319: $active_chk = 'active';
3320: if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
3321: $role_end = $2;
3322: if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
3323: $role_start = $3;
3324: }
3325: }
3326: if ($role_start > 0) {
3327: if (time < $role_start) {
3328: $active_chk = 'future';
3329: }
3330: }
3331: if ($role_end > 0) {
3332: if (time > $role_end) {
3333: $active_chk = 'previous';
3334: }
3335: }
3336: }
3337: }
3338: return $active_chk;
3339: }
3340:
3341: ###############################################
3342:
3343: =pod
3344:
1.233 raeburn 3345: =item get_sections
3346:
3347: Determines all the sections for a course including
3348: sections with students and sections containing other roles.
3349: Incoming parameters: domain, course number, reference to
3350: section hash (keys to be section/group IDs), reference to
3351: array containing roles for which sections should be gathered
3352: (optional). If the fourth argument is undefined, sections
3353: are gathered for any role.
3354:
3355: Returns number of sections.
3356:
3357: =cut
3358:
3359: ###############################################
3360: sub get_sections {
3361: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
1.240 albertel 3362: if (!($cdom && $cnum)) { return 0; }
1.233 raeburn 3363: my $numsections = 0;
1.240 albertel 3364:
3365: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
1.276 albertel 3366: my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
1.240 albertel 3367: my $sec_index = &Apache::loncoursedata::CL_SECTION();
3368: my $status_index = &Apache::loncoursedata::CL_STATUS();
3369: while (my ($student,$data) = each %$classlist) {
3370: my ($section,$status) = ($data->[$sec_index],
3371: $data->[$status_index]);
3372: unless ($section eq '-1' || $section =~ /^\s*$/) {
3373: if (!defined($$sectioncount{$section})) { $numsections++; }
3374: $$sectioncount{$section}++;
3375: }
3376: }
3377: }
3378: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
3379: foreach my $user (sort(keys(%courseroles))) {
3380: if ($user !~ /^(\w{2})/) { next; }
3381: my ($role) = ($user =~ /^(\w{2})/);
3382: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
3383: my $section;
3384: if ($role eq 'cr' &&
3385: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
3386: $section=$1;
3387: }
3388: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
3389: if (!defined($section) || $section eq '-1') { next; }
3390: if (!defined($$sectioncount{$section})) { $numsections++; }
3391: $$sectioncount{$section}++;
1.233 raeburn 3392: }
3393: return $numsections;
3394: }
3395:
1.274 raeburn 3396: ###############################################
1.298 raeburn 3397:
3398: =pod
3399:
3400: =item coursegroups
3401:
3402: Retrieve information about groups in a course,
3403:
3404: Input:
3405: 1. Reference to hash to populate with group information.
3406: 2. Optional course domain
3407: 3. Optional course number
3408: 4. Optional group name
3409:
3410: Course domain and number will be taken from user's
3411: environment if not supplied. Optional group name will'
3412: be passed to lonnet::get_coursegroups() as a regexp to
3413: use in the call to the dump function.
3414:
3415: Output
3416: Returns number of groups in the course (subject to the
3417: optional group name filter).
3418:
3419: Side effects:
3420: Populates the referenced curr_groups hash, with key,
3421: value pairs. Keys are group names, corresponding values
3422: are scalars containing group information in XML. This
3423: can be sent to &get_group_settings() to be parsed.
3424:
3425: =cut
3426:
3427: ###############################################
3428:
3429: sub coursegroups {
3430: my ($curr_groups,$cdom,$cnum,$group) = @_;
3431: my $numgroups;
3432: if (!defined($cdom) || !defined($cnum)) {
3433: my $cid = $env{'request.course.id'};
3434: $cdom = $env{'course.'.$cid.'.domain'};
3435: $cnum = $env{'course.'.$cid.'.num'};
3436: }
3437: %{$curr_groups} = &Apache::lonnet::get_coursegroups($cdom,$cnum,$group);
3438: my ($tmp) = keys(%{$curr_groups});
3439: if ($tmp=~/^error:/) {
3440: unless ($tmp eq 'error: 2 tie(GDBM) Failed while attempting dump') {
3441: &logthis('Error retrieving groups: '.$tmp.' in '.$cnum.':'.
3442: $cdom);
3443: }
3444: $numgroups = 0;
3445: } else {
3446: $numgroups = keys(%{$curr_groups});
3447: }
3448: return $numgroups;
3449: }
3450:
3451: ###############################################
1.274 raeburn 3452:
1.275 raeburn 3453: =pod
1.294 raeburn 3454:
3455: =item get_group_settings
3456:
3457: Uses TokeParser to extract group information from the
3458: XML used to describe course groups.
3459:
3460: Input:
1.298 raeburn 3461: Scalar containing XML - as retrieved from &coursegroups().
1.294 raeburn 3462:
3463: Output:
3464: Hash containing group information as key=values for (a), and
3465: hash of hashes for (b)
3466:
3467: Keys (in two categories):
3468: (a) groupname, creator, creation, modified, startdate,enddate.
3469: Corresponding values are name of the group, creator of the group
3470: (username:domain), UNIX time for date group was created, and
3471: settings were last modified, and default start and end access
3472: times for group members.
3473:
3474: (b) functions returned in hash of hashes.
3475: Outer hash key is functions.
3476: Inner hash keys are chat,discussion,email,files,homepage,roster.
3477: Corresponding values are either on or off, depending on
1.303 raeburn 3478: whether this type of functionality is available for the group.
1.294 raeburn 3479:
3480: =cut
3481:
3482: ###############################################
3483:
3484: sub get_group_settings {
3485: my ($groupinfo)=@_;
3486: my $parser=HTML::TokeParser->new(\$groupinfo);
3487: my $token;
3488: my $tool = '';
1.303 raeburn 3489: my $role = '';
1.294 raeburn 3490: my %content=();
3491: while ($token=$parser->get_token) {
3492: if ($token->[0] eq 'S') {
3493: my $entry=$token->[1];
1.303 raeburn 3494: if ($entry eq 'functions' || $entry eq 'autosec') {
1.294 raeburn 3495: %{$content{$entry}} = ();
3496: $tool = $entry;
1.303 raeburn 3497: } elsif ($entry eq 'role') {
3498: if ($tool eq 'autosec') {
3499: $role = $token->[2]{id};
3500: }
1.294 raeburn 3501: } else {
3502: my $value=$parser->get_text('/'.$entry);
3503: if ($entry eq 'name') {
3504: if ($tool eq 'functions') {
3505: my $function = $token->[2]{id};
3506: $content{$tool}{$function} = $value;
3507: }
3508: } elsif ($entry eq 'groupname') {
3509: $content{$entry}=&Apache::lonnet::unescape($value);
1.303 raeburn 3510: } elsif (($entry eq 'roles') || ($entry eq 'types') ||
3511: ($entry eq 'sectionpick') || ($entry eq 'defpriv')) {
3512: push(@{$content{$entry}},$value);
3513: } elsif ($entry eq 'section') {
3514: if ($tool eq 'autosec' && $role ne '') {
3515: push(@{$content{$tool}{$role}},$value);
3516: }
1.294 raeburn 3517: } else {
3518: $content{$entry}=$value;
3519: }
3520: }
3521: } elsif ($token->[0] eq 'E') {
1.303 raeburn 3522: if ($token->[1] eq 'functions' || $token->[1] eq 'autosec') {
1.294 raeburn 3523: $tool = '';
1.303 raeburn 3524: } elsif ($token->[1] eq 'role') {
3525: $role = '';
1.294 raeburn 3526: }
1.303 raeburn 3527:
1.294 raeburn 3528: }
3529: }
3530: return %content;
3531: }
3532:
3533: sub check_group_access {
3534: my ($group) = @_;
3535: my $access = 1;
3536: my $now = time;
3537: my ($start,$end) = split(/\./,$env{'user.role.gr/'.$env{'request.course,id'}.'/'.$group});
3538: if (($end!=0) && ($end<$now)) { $access = 0; }
3539: if (($start!=0) && ($start>$now)) { $access=0; }
3540: return $access;
3541: }
3542:
3543: ###############################################
3544:
3545: =pod
1.275 raeburn 3546:
3547: =item get_course_users
3548:
3549: Retrieves usernames:domains for users in the specified course
3550: with specific role(s), and access status.
3551:
3552: Incoming parameters:
1.277 albertel 3553: 1. course domain
3554: 2. course number
3555: 3. access status: users must have - either active,
1.275 raeburn 3556: previous, future, or all.
1.277 albertel 3557: 4. reference to array of permissible roles
1.288 raeburn 3558: 5. reference to array of section restrictions (optional)
3559: 6. reference to results object (hash of hashes).
3560: 7. reference to optional userdata hash
1.275 raeburn 3561: Keys of top level hash are roles.
3562: Keys of inner hashes are username:domain, with
3563: values set to access type.
1.288 raeburn 3564: Optional userdata hash returns an array with arguments in the
3565: same order as loncoursedata::get_classlist() for student data.
3566:
3567: Entries for end, start, section and status are blank because
3568: of the possibility of multiple values for non-student roles.
3569:
1.275 raeburn 3570: =cut
3571:
3572: ###############################################
3573:
3574: sub get_course_users {
1.288 raeburn 3575: my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata) = @_;
3576: my %idx = ();
3577:
3578: $idx{udom} = &Apache::loncoursedata::CL_SDOM();
3579: $idx{uname} = &Apache::loncoursedata::CL_SNAME();
3580: $idx{end} = &Apache::loncoursedata::CL_END();
3581: $idx{start} = &Apache::loncoursedata::CL_START();
3582: $idx{id} = &Apache::loncoursedata::CL_ID();
3583: $idx{section} = &Apache::loncoursedata::CL_SECTION();
3584: $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
3585: $idx{status} = &Apache::loncoursedata::CL_STATUS();
3586:
1.290 albertel 3587: if (grep(/^st$/,@{$roles})) {
1.276 albertel 3588: my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
1.278 raeburn 3589: my $now = time;
1.277 albertel 3590: foreach my $student (keys(%{$classlist})) {
1.288 raeburn 3591: my $match = 0;
1.291 albertel 3592: if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
1.290 albertel 3593: unless(grep(/^\Q$$classlist{$student}[$idx{section}]\E$/,
3594: @{$sections})) {
3595: next;
3596: }
1.288 raeburn 3597: }
1.275 raeburn 3598: if (defined($$types{'active'})) {
1.288 raeburn 3599: if ($$classlist{$student}[$idx{status}] eq 'Active') {
1.275 raeburn 3600: push(@{$$users{st}{$student}},'active');
1.288 raeburn 3601: $match = 1;
1.275 raeburn 3602: }
3603: }
3604: if (defined($$types{'previous'})) {
1.288 raeburn 3605: if ($$classlist{$student}[$idx{end}] <= $now) {
1.275 raeburn 3606: push(@{$$users{st}{$student}},'previous');
1.288 raeburn 3607: $match = 1;
1.275 raeburn 3608: }
3609: }
3610: if (defined($$types{'future'})) {
1.288 raeburn 3611: if (($$classlist{$student}[$idx{start}] > $now) && ($$classlist{$student}[$idx{end}] > $now) || ($$classlist{$student}[$idx{end}] == 0) || ($$classlist{$student}[$idx{end}] eq '')) {
1.275 raeburn 3612: push(@{$$users{st}{$student}},'future');
1.288 raeburn 3613: $match = 1;
1.275 raeburn 3614: }
3615: }
1.288 raeburn 3616: if ($match && defined($userdata)) {
3617: $$userdata{$student} = $$classlist{$student};
3618: }
1.275 raeburn 3619: }
3620: }
3621: if ((@{$roles} > 0) && (@{$roles} ne "st")) {
3622: my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
3623: foreach my $person (@coursepersonnel) {
1.288 raeburn 3624: my $match = 0;
1.275 raeburn 3625: my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
3626: $user =~ s/:$//;
1.290 albertel 3627: if (($role) && (grep(/^\Q$role\E$/,@{$roles}))) {
1.288 raeburn 3628: my ($uname,$udom,$usec) = split(/:/,$user);
1.290 albertel 3629: if ($usec ne '' && (ref($sections) eq 'ARRAY') &&
3630: @{$sections} > 0) {
3631: unless(grep(/^\Q$usec\E$/,@{$sections})) {
3632: next;
3633: }
1.288 raeburn 3634: }
1.275 raeburn 3635: if ($uname ne '' && $udom ne '') {
3636: my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
1.277 albertel 3637: foreach my $type (keys(%{$types})) {
1.275 raeburn 3638: if ($status eq $type) {
1.288 raeburn 3639: @{$$users{$role}{$user}} = $type;
3640: $match = 1;
3641: }
3642: }
1.290 albertel 3643: if ($match && defined($userdata) &&
3644: !exists($$userdata{$uname.':'.$udom})) {
3645: &get_user_info($udom,$uname,\%idx,$userdata);
1.275 raeburn 3646: }
3647: }
3648: }
3649: }
1.290 albertel 3650: if (grep(/^ow$/,@{$roles})) {
1.279 raeburn 3651: if ((defined($cdom)) && (defined($cnum))) {
3652: my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
3653: if ( defined($csettings{'internal.courseowner'}) ) {
3654: my $owner = $csettings{'internal.courseowner'};
1.288 raeburn 3655: @{$$users{'ow'}{$owner.':'.$cdom}} = 'any';
1.290 albertel 3656: if (defined($userdata) &&
3657: !exists($$userdata{$owner.':'.$cdom})) {
3658: &get_user_info($cdom,$owner,\%idx,$userdata);
3659: }
1.279 raeburn 3660: }
3661: }
3662: }
1.275 raeburn 3663: }
3664: return;
3665: }
3666:
1.288 raeburn 3667: sub get_user_info {
3668: my ($udom,$uname,$idx,$userdata) = @_;
1.289 albertel 3669: $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
3670: &plainname($uname,$udom,'lastname');
1.291 albertel 3671: $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
1.297 raeburn 3672: $$userdata{$uname.':'.$udom}[$$idx{udom}] = $udom;
1.288 raeburn 3673: return;
3674: }
1.275 raeburn 3675:
3676: ###############################################
1.233 raeburn 3677:
1.99 www 3678: sub get_posted_cgi {
3679: my $r=shift;
3680:
3681: my $buffer;
1.260 albertel 3682: if ($r->header_in('Content-length')) {
3683: $r->read($buffer,$r->header_in('Content-length'),0);
3684: }
1.99 www 3685: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
3686: my @pairs=split(/&/,$buffer);
3687: my $pair;
3688: foreach $pair (@pairs) {
3689: my ($name,$value) = split(/=/,$pair);
3690: $value =~ tr/+/ /;
3691: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3692: $name =~ tr/+/ /;
3693: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3694: &add_to_env("form.$name",$value);
3695: }
3696: } else {
3697: my $contentsep=$1;
3698: my @lines = split (/\n/,$buffer);
3699: my $name='';
3700: my $value='';
3701: my $fname='';
3702: my $fmime='';
3703: my $i;
3704: for ($i=0;$i<=$#lines;$i++) {
3705: if ($lines[$i]=~/^$contentsep/) {
3706: if ($name) {
3707: chomp($value);
3708: if ($fname) {
1.258 albertel 3709: $env{"form.$name.filename"}=$fname;
3710: $env{"form.$name.mimetype"}=$fmime;
1.99 www 3711: } else {
3712: $value=~s/\s+$//s;
3713: }
3714: &add_to_env("form.$name",$value);
3715: }
3716: if ($i<$#lines) {
3717: $i++;
3718: $lines[$i]=~
3719: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
3720: $name=$1;
3721: $value='';
3722: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
3723: $fname=$1;
3724: if
3725: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
3726: $fmime=$1;
3727: $i++;
3728: } else {
3729: $fmime='';
3730: }
3731: } else {
3732: $fname='';
3733: $fmime='';
3734: }
3735: $i++;
3736: }
3737: } else {
3738: $value.=$lines[$i]."\n";
3739: }
3740: }
3741: }
1.328 www 3742: #
3743: # Digested POSTed values
3744: #
3745: # Remember the way this was originally done (GET or POST)
3746: #
1.258 albertel 3747: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
1.328 www 3748: #
3749: # There may also be stuff in the query string
3750: # Tell subsequent handlers that this was GET, not POST, so they can access query string.
3751: # Also, unset POSTed content length to cover all tracks.
3752: #
3753:
3754: # This does not work, because M_GET is not defined (if it's defined, it is just 0).
3755: # Commenting out for now ... not sure if harm is done.
3756: # $r->method_number(M_GET);
3757:
1.99 www 3758: $r->method('GET');
3759: $r->headers_in->unset('Content-length');
3760: }
3761:
1.112 bowersj2 3762: =pod
3763:
3764: =item * get_unprocessed_cgi($query,$possible_names)
3765:
1.258 albertel 3766: Modify the %env hash to contain unprocessed CGI form parameters held in
1.112 bowersj2 3767: $query. The parameters listed in $possible_names (an array reference),
1.258 albertel 3768: will be set in $env{'form.name'} if they do not already exist.
1.112 bowersj2 3769:
3770: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
3771: $possible_names is an ref to an array of form element names. As an example:
3772: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
1.258 albertel 3773: will result in $env{'form.uname'} and $env{'form.udom'} being set.
1.112 bowersj2 3774:
3775: =cut
1.1 albertel 3776:
1.6 albertel 3777: sub get_unprocessed_cgi {
1.25 albertel 3778: my ($query,$possible_names)= @_;
1.26 matthew 3779: # $Apache::lonxml::debug=1;
1.16 harris41 3780: foreach (split(/&/,$query)) {
1.6 albertel 3781: my ($name, $value) = split(/=/,$_);
1.25 albertel 3782: $name = &Apache::lonnet::unescape($name);
3783: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
3784: $value =~ tr/+/ /;
3785: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.258 albertel 3786: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
1.25 albertel 3787: }
1.16 harris41 3788: }
1.6 albertel 3789: }
3790:
1.112 bowersj2 3791: =pod
3792:
3793: =item * cacheheader()
3794:
3795: returns cache-controlling header code
3796:
3797: =cut
3798:
1.7 albertel 3799: sub cacheheader {
1.258 albertel 3800: unless ($env{'request.method'} eq 'GET') { return ''; }
1.216 albertel 3801: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
3802: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
1.7 albertel 3803: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
3804: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
1.216 albertel 3805: return $output;
1.7 albertel 3806: }
3807:
1.112 bowersj2 3808: =pod
3809:
3810: =item * no_cache($r)
3811:
3812: specifies header code to not have cache
3813:
3814: =cut
3815:
1.9 albertel 3816: sub no_cache {
1.216 albertel 3817: my ($r) = @_;
3818: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
1.258 albertel 3819: $env{'request.method'} ne 'GET') { return ''; }
1.216 albertel 3820: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
3821: $r->no_cache(1);
3822: $r->header_out("Expires" => $date);
3823: $r->header_out("Pragma" => "no-cache");
1.123 www 3824: }
3825:
3826: sub content_type {
1.181 albertel 3827: my ($r,$type,$charset) = @_;
1.299 foxr 3828: if ($r) {
3829: # Note that printout.pl calls this with undef for $r.
3830: &no_cache($r);
3831: }
1.258 albertel 3832: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
1.181 albertel 3833: unless ($charset) {
3834: $charset=&Apache::lonlocal::current_encoding;
3835: }
3836: if ($charset) { $type.='; charset='.$charset; }
3837: if ($r) {
3838: $r->content_type($type);
3839: } else {
3840: print("Content-type: $type\n\n");
3841: }
1.9 albertel 3842: }
1.25 albertel 3843:
1.112 bowersj2 3844: =pod
3845:
3846: =item * add_to_env($name,$value)
3847:
1.258 albertel 3848: adds $name to the %env hash with value
1.112 bowersj2 3849: $value, if $name already exists, the entry is converted to an array
3850: reference and $value is added to the array.
3851:
3852: =cut
3853:
1.25 albertel 3854: sub add_to_env {
3855: my ($name,$value)=@_;
1.258 albertel 3856: if (defined($env{$name})) {
3857: if (ref($env{$name})) {
1.25 albertel 3858: #already have multiple values
1.258 albertel 3859: push(@{ $env{$name} },$value);
1.25 albertel 3860: } else {
3861: #first time seeing multiple values, convert hash entry to an arrayref
1.258 albertel 3862: my $first=$env{$name};
3863: undef($env{$name});
3864: push(@{ $env{$name} },$first,$value);
1.25 albertel 3865: }
3866: } else {
1.258 albertel 3867: $env{$name}=$value;
1.25 albertel 3868: }
1.31 albertel 3869: }
1.149 albertel 3870:
3871: =pod
3872:
3873: =item * get_env_multiple($name)
3874:
1.258 albertel 3875: gets $name from the %env hash, it seemlessly handles the cases where multiple
1.149 albertel 3876: values may be defined and end up as an array ref.
3877:
3878: returns an array of values
3879:
3880: =cut
3881:
3882: sub get_env_multiple {
3883: my ($name) = @_;
3884: my @values;
1.258 albertel 3885: if (defined($env{$name})) {
1.149 albertel 3886: # exists is it an array
1.258 albertel 3887: if (ref($env{$name})) {
3888: @values=@{ $env{$name} };
1.149 albertel 3889: } else {
1.258 albertel 3890: $values[0]=$env{$name};
1.149 albertel 3891: }
3892: }
3893: return(@values);
3894: }
3895:
1.31 albertel 3896:
1.41 ng 3897: =pod
1.45 matthew 3898:
3899: =back
1.41 ng 3900:
1.112 bowersj2 3901: =head1 CSV Upload/Handling functions
1.38 albertel 3902:
1.41 ng 3903: =over 4
3904:
1.112 bowersj2 3905: =item * upfile_store($r)
1.41 ng 3906:
3907: Store uploaded file, $r should be the HTTP Request object,
1.258 albertel 3908: needs $env{'form.upfile'}
1.41 ng 3909: returns $datatoken to be put into hidden field
3910:
3911: =cut
1.31 albertel 3912:
3913: sub upfile_store {
3914: my $r=shift;
1.258 albertel 3915: $env{'form.upfile'}=~s/\r/\n/gs;
3916: $env{'form.upfile'}=~s/\f/\n/gs;
3917: $env{'form.upfile'}=~s/\n+/\n/gs;
3918: $env{'form.upfile'}=~s/\n+$//gs;
1.31 albertel 3919:
1.258 albertel 3920: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
3921: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
1.31 albertel 3922: {
1.158 raeburn 3923: my $datafile = $r->dir_config('lonDaemons').
3924: '/tmp/'.$datatoken.'.tmp';
3925: if ( open(my $fh,">$datafile") ) {
1.258 albertel 3926: print $fh $env{'form.upfile'};
1.158 raeburn 3927: close($fh);
3928: }
1.31 albertel 3929: }
3930: return $datatoken;
3931: }
3932:
1.56 matthew 3933: =pod
3934:
1.112 bowersj2 3935: =item * load_tmp_file($r)
1.41 ng 3936:
3937: Load uploaded file from tmp, $r should be the HTTP Request object,
1.258 albertel 3938: needs $env{'form.datatoken'},
3939: sets $env{'form.upfile'} to the contents of the file
1.41 ng 3940:
3941: =cut
1.31 albertel 3942:
3943: sub load_tmp_file {
3944: my $r=shift;
3945: my @studentdata=();
3946: {
1.158 raeburn 3947: my $studentfile = $r->dir_config('lonDaemons').
1.258 albertel 3948: '/tmp/'.$env{'form.datatoken'}.'.tmp';
1.158 raeburn 3949: if ( open(my $fh,"<$studentfile") ) {
3950: @studentdata=<$fh>;
3951: close($fh);
3952: }
1.31 albertel 3953: }
1.258 albertel 3954: $env{'form.upfile'}=join('',@studentdata);
1.31 albertel 3955: }
3956:
1.56 matthew 3957: =pod
3958:
1.112 bowersj2 3959: =item * upfile_record_sep()
1.41 ng 3960:
3961: Separate uploaded file into records
3962: returns array of records,
1.258 albertel 3963: needs $env{'form.upfile'} and $env{'form.upfiletype'}
1.41 ng 3964:
3965: =cut
1.31 albertel 3966:
3967: sub upfile_record_sep {
1.258 albertel 3968: if ($env{'form.upfiletype'} eq 'xml') {
1.31 albertel 3969: } else {
1.248 albertel 3970: my @records;
1.258 albertel 3971: foreach my $line (split(/\n/,$env{'form.upfile'})) {
1.248 albertel 3972: if ($line=~/^\s*$/) { next; }
3973: push(@records,$line);
3974: }
3975: return @records;
1.31 albertel 3976: }
3977: }
3978:
1.56 matthew 3979: =pod
3980:
1.112 bowersj2 3981: =item * record_sep($record)
1.41 ng 3982:
1.258 albertel 3983: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
1.41 ng 3984:
3985: =cut
3986:
1.263 www 3987: sub takeleft {
3988: my $index=shift;
3989: return substr('0000'.$index,-4,4);
3990: }
3991:
1.31 albertel 3992: sub record_sep {
3993: my $record=shift;
3994: my %components=();
1.258 albertel 3995: if ($env{'form.upfiletype'} eq 'xml') {
3996: } elsif ($env{'form.upfiletype'} eq 'space') {
1.31 albertel 3997: my $i=0;
3998: foreach (split(/\s+/,$record)) {
3999: my $field=$_;
4000: $field=~s/^(\"|\')//;
4001: $field=~s/(\"|\')$//;
1.263 www 4002: $components{&takeleft($i)}=$field;
1.31 albertel 4003: $i++;
4004: }
1.258 albertel 4005: } elsif ($env{'form.upfiletype'} eq 'tab') {
1.31 albertel 4006: my $i=0;
1.171 matthew 4007: foreach (split(/\t/,$record)) {
1.31 albertel 4008: my $field=$_;
4009: $field=~s/^(\"|\')//;
4010: $field=~s/(\"|\')$//;
1.263 www 4011: $components{&takeleft($i)}=$field;
1.31 albertel 4012: $i++;
4013: }
4014: } else {
4015: my @allfields=split(/\,/,$record);
4016: my $i=0;
4017: my $j;
4018: for ($j=0;$j<=$#allfields;$j++) {
4019: my $field=$allfields[$j];
4020: if ($field=~/^\s*(\"|\')/) {
4021: my $delimiter=$1;
4022: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
4023: $j++;
4024: $field.=','.$allfields[$j];
4025: }
4026: $field=~s/^\s*$delimiter//;
4027: $field=~s/$delimiter\s*$//;
4028: }
1.263 www 4029: $components{&takeleft($i)}=$field;
1.31 albertel 4030: $i++;
4031: }
4032: }
4033: return %components;
4034: }
4035:
1.144 matthew 4036: ######################################################
4037: ######################################################
4038:
1.56 matthew 4039: =pod
4040:
1.112 bowersj2 4041: =item * upfile_select_html()
1.41 ng 4042:
1.144 matthew 4043: Return HTML code to select a file from the users machine and specify
4044: the file type.
1.41 ng 4045:
4046: =cut
4047:
1.144 matthew 4048: ######################################################
4049: ######################################################
1.31 albertel 4050: sub upfile_select_html {
1.144 matthew 4051: my %Types = (
4052: csv => &mt('CSV (comma separated values, spreadsheet)'),
4053: space => &mt('Space separated'),
4054: tab => &mt('Tabulator separated'),
4055: # xml => &mt('HTML/XML'),
4056: );
4057: my $Str = '<input type="file" name="upfile" size="50" />'.
4058: '<br />Type: <select name="upfiletype">';
4059: foreach my $type (sort(keys(%Types))) {
4060: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
4061: }
4062: $Str .= "</select>\n";
4063: return $Str;
1.31 albertel 4064: }
4065:
1.301 albertel 4066: sub get_samples {
4067: my ($records,$toget) = @_;
4068: my @samples=({});
4069: my $got=0;
4070: foreach my $rec (@$records) {
4071: my %temp = &record_sep($rec);
4072: if (! grep(/\S/, values(%temp))) { next; }
4073: if (%temp) {
4074: $samples[$got]=\%temp;
4075: $got++;
4076: if ($got == $toget) { last; }
4077: }
4078: }
4079: return \@samples;
4080: }
4081:
1.144 matthew 4082: ######################################################
4083: ######################################################
4084:
1.56 matthew 4085: =pod
4086:
1.112 bowersj2 4087: =item * csv_print_samples($r,$records)
1.41 ng 4088:
4089: Prints a table of sample values from each column uploaded $r is an
4090: Apache Request ref, $records is an arrayref from
4091: &Apache::loncommon::upfile_record_sep
4092:
4093: =cut
4094:
1.144 matthew 4095: ######################################################
4096: ######################################################
1.31 albertel 4097: sub csv_print_samples {
4098: my ($r,$records) = @_;
1.301 albertel 4099: my $samples = &get_samples($records,3);
4100:
1.144 matthew 4101: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
1.301 albertel 4102: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
1.144 matthew 4103: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
1.31 albertel 4104: $r->print('</tr>');
1.301 albertel 4105: foreach my $hash (@$samples) {
1.31 albertel 4106: $r->print('<tr>');
1.301 albertel 4107: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
1.31 albertel 4108: $r->print('<td>');
4109: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
4110: $r->print('</td>');
4111: }
4112: $r->print('</tr>');
4113: }
4114: $r->print('</tr></table><br />'."\n");
4115: }
4116:
1.144 matthew 4117: ######################################################
4118: ######################################################
4119:
1.56 matthew 4120: =pod
4121:
1.112 bowersj2 4122: =item * csv_print_select_table($r,$records,$d)
1.41 ng 4123:
4124: Prints a table to create associations between values and table columns.
1.144 matthew 4125:
1.41 ng 4126: $r is an Apache Request ref,
4127: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
1.174 matthew 4128: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
1.41 ng 4129:
4130: =cut
4131:
1.144 matthew 4132: ######################################################
4133: ######################################################
1.31 albertel 4134: sub csv_print_select_table {
4135: my ($r,$records,$d) = @_;
1.301 albertel 4136: my $i=0;
4137: my $samples = &get_samples($records,1);
1.144 matthew 4138: $r->print(&mt('Associate columns with student attributes.')."\n".
4139: '<table border="2"><tr>'.
4140: '<th>'.&mt('Attribute').'</th>'.
4141: '<th>'.&mt('Column').'</th></tr>'."\n");
1.31 albertel 4142: foreach (@$d) {
1.174 matthew 4143: my ($value,$display,$defaultcol)=@{ $_ };
1.31 albertel 4144: $r->print('<tr><td>'.$display.'</td>');
4145:
4146: $r->print('<td><select name=f'.$i.
1.32 matthew 4147: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 4148: $r->print('<option value="none"></option>');
1.301 albertel 4149: foreach (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
1.174 matthew 4150: $r->print('<option value="'.$_.'"'.
1.253 albertel 4151: ($_ eq $defaultcol ? ' selected="selected" ' : '').
1.174 matthew 4152: '>Column '.($_+1).'</option>');
1.31 albertel 4153: }
4154: $r->print('</select></td></tr>'."\n");
4155: $i++;
4156: }
4157: $i--;
4158: return $i;
4159: }
1.56 matthew 4160:
1.144 matthew 4161: ######################################################
4162: ######################################################
4163:
1.56 matthew 4164: =pod
1.31 albertel 4165:
1.112 bowersj2 4166: =item * csv_samples_select_table($r,$records,$d)
1.41 ng 4167:
4168: Prints a table of sample values from the upload and can make associate samples to internal names.
4169:
4170: $r is an Apache Request ref,
4171: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
4172: $d is an array of 2 element arrays (internal name, displayed name)
4173:
4174: =cut
4175:
1.144 matthew 4176: ######################################################
4177: ######################################################
1.31 albertel 4178: sub csv_samples_select_table {
4179: my ($r,$records,$d) = @_;
4180: my $i=0;
1.144 matthew 4181: #
1.301 albertel 4182: my $samples = &get_samples($records,3);
1.144 matthew 4183: $r->print('<table border=2><tr><th>'.
4184: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
1.301 albertel 4185:
4186: foreach my $key (sort(keys(%{ $samples->[0] }))) {
1.144 matthew 4187: $r->print('<tr><td><select name="f'.$i.'"'.
1.32 matthew 4188: ' onchange="javascript:flip(this.form,'.$i.');">');
1.301 albertel 4189: foreach my $option (@$d) {
4190: my ($value,$display,$defaultcol)=@{ $option };
1.174 matthew 4191: $r->print('<option value="'.$value.'"'.
1.253 albertel 4192: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
1.174 matthew 4193: $display.'</option>');
1.31 albertel 4194: }
4195: $r->print('</select></td><td>');
1.301 albertel 4196: foreach my $line (0..2) {
4197: if (defined($samples->[$line]{$key})) {
4198: $r->print($samples->[$line]{$key}."<br />\n");
4199: }
4200: }
1.31 albertel 4201: $r->print('</td></tr>');
4202: $i++;
4203: }
4204: $i--;
4205: return($i);
1.115 matthew 4206: }
4207:
1.144 matthew 4208: ######################################################
4209: ######################################################
4210:
1.115 matthew 4211: =pod
4212:
4213: =item clean_excel_name($name)
4214:
4215: Returns a replacement for $name which does not contain any illegal characters.
4216:
4217: =cut
4218:
1.144 matthew 4219: ######################################################
4220: ######################################################
1.115 matthew 4221: sub clean_excel_name {
4222: my ($name) = @_;
4223: $name =~ s/[:\*\?\/\\]//g;
4224: if (length($name) > 31) {
4225: $name = substr($name,0,31);
4226: }
4227: return $name;
1.25 albertel 4228: }
1.84 albertel 4229:
1.85 albertel 4230: =pod
4231:
1.112 bowersj2 4232: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
1.85 albertel 4233:
4234: Returns either 1 or undef
4235:
4236: 1 if the part is to be hidden, undef if it is to be shown
4237:
4238: Arguments are:
4239:
4240: $id the id of the part to be checked
4241: $symb, optional the symb of the resource to check
4242: $udom, optional the domain of the user to check for
4243: $uname, optional the username of the user to check for
4244:
4245: =cut
1.84 albertel 4246:
4247: sub check_if_partid_hidden {
4248: my ($id,$symb,$udom,$uname) = @_;
1.133 albertel 4249: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
1.84 albertel 4250: $symb,$udom,$uname);
1.141 albertel 4251: my $truth=1;
4252: #if the string starts with !, then the list is the list to show not hide
4253: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
1.84 albertel 4254: my @hiddenlist=split(/,/,$hiddenparts);
4255: foreach my $checkid (@hiddenlist) {
1.141 albertel 4256: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
1.84 albertel 4257: }
1.141 albertel 4258: return !$truth;
1.84 albertel 4259: }
1.127 matthew 4260:
1.138 matthew 4261:
4262: ############################################################
4263: ############################################################
4264:
4265: =pod
4266:
1.157 matthew 4267: =back
4268:
1.138 matthew 4269: =head1 cgi-bin script and graphing routines
4270:
1.157 matthew 4271: =over 4
4272:
1.138 matthew 4273: =item get_cgi_id
4274:
4275: Inputs: none
4276:
4277: Returns an id which can be used to pass environment variables
4278: to various cgi-bin scripts. These environment variables will
4279: be removed from the users environment after a given time by
4280: the routine &Apache::lonnet::transfer_profile_to_env.
4281:
4282: =cut
4283:
4284: ############################################################
4285: ############################################################
1.152 albertel 4286: my $uniq=0;
1.136 matthew 4287: sub get_cgi_id {
1.154 albertel 4288: $uniq=($uniq+1)%100000;
1.280 albertel 4289: return (time.'_'.$$.'_'.$uniq);
1.136 matthew 4290: }
4291:
1.127 matthew 4292: ############################################################
4293: ############################################################
4294:
4295: =pod
4296:
1.134 matthew 4297: =item DrawBarGraph
1.127 matthew 4298:
1.138 matthew 4299: Facilitates the plotting of data in a (stacked) bar graph.
4300: Puts plot definition data into the users environment in order for
4301: graph.png to plot it. Returns an <img> tag for the plot.
4302: The bars on the plot are labeled '1','2',...,'n'.
4303:
4304: Inputs:
4305:
4306: =over 4
4307:
4308: =item $Title: string, the title of the plot
4309:
4310: =item $xlabel: string, text describing the X-axis of the plot
4311:
4312: =item $ylabel: string, text describing the Y-axis of the plot
4313:
4314: =item $Max: scalar, the maximum Y value to use in the plot
4315: If $Max is < any data point, the graph will not be rendered.
4316:
1.140 matthew 4317: =item $colors: array ref holding the colors to be used for the data sets when
1.138 matthew 4318: they are plotted. If undefined, default values will be used.
4319:
1.178 matthew 4320: =item $labels: array ref holding the labels to use on the x-axis for the bars.
4321:
1.138 matthew 4322: =item @Values: An array of array references. Each array reference holds data
4323: to be plotted in a stacked bar chart.
4324:
1.239 matthew 4325: =item If the final element of @Values is a hash reference the key/value
4326: pairs will be added to the graph definition.
4327:
1.138 matthew 4328: =back
4329:
4330: Returns:
4331:
4332: An <img> tag which references graph.png and the appropriate identifying
4333: information for the plot.
4334:
1.127 matthew 4335: =cut
4336:
4337: ############################################################
4338: ############################################################
1.134 matthew 4339: sub DrawBarGraph {
1.178 matthew 4340: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
1.134 matthew 4341: #
4342: if (! defined($colors)) {
4343: $colors = ['#33ff00',
4344: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
4345: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
4346: ];
4347: }
1.228 matthew 4348: my $extra_settings = {};
4349: if (ref($Values[-1]) eq 'HASH') {
4350: $extra_settings = pop(@Values);
4351: }
1.127 matthew 4352: #
1.136 matthew 4353: my $identifier = &get_cgi_id();
4354: my $id = 'cgi.'.$identifier;
1.129 matthew 4355: if (! @Values || ref($Values[0]) ne 'ARRAY') {
1.127 matthew 4356: return '';
4357: }
1.225 matthew 4358: #
4359: my @Labels;
4360: if (defined($labels)) {
4361: @Labels = @$labels;
4362: } else {
4363: for (my $i=0;$i<@{$Values[0]};$i++) {
4364: push (@Labels,$i+1);
4365: }
4366: }
4367: #
1.129 matthew 4368: my $NumBars = scalar(@{$Values[0]});
1.225 matthew 4369: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
1.129 matthew 4370: my %ValuesHash;
4371: my $NumSets=1;
4372: foreach my $array (@Values) {
4373: next if (! ref($array));
1.136 matthew 4374: $ValuesHash{$id.'.data.'.$NumSets++} =
1.132 matthew 4375: join(',',@$array);
1.129 matthew 4376: }
1.127 matthew 4377: #
1.136 matthew 4378: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
1.225 matthew 4379: if ($NumBars < 3) {
4380: $width = 120+$NumBars*32;
1.220 matthew 4381: $xskip = 1;
1.225 matthew 4382: $bar_width = 30;
4383: } elsif ($NumBars < 5) {
4384: $width = 120+$NumBars*20;
4385: $xskip = 1;
4386: $bar_width = 20;
1.220 matthew 4387: } elsif ($NumBars < 10) {
1.136 matthew 4388: $width = 120+$NumBars*15;
4389: $xskip = 1;
4390: $bar_width = 15;
4391: } elsif ($NumBars <= 25) {
4392: $width = 120+$NumBars*11;
4393: $xskip = 5;
4394: $bar_width = 8;
4395: } elsif ($NumBars <= 50) {
4396: $width = 120+$NumBars*8;
4397: $xskip = 5;
4398: $bar_width = 4;
4399: } else {
4400: $width = 120+$NumBars*8;
4401: $xskip = 5;
4402: $bar_width = 4;
4403: }
4404: #
1.137 matthew 4405: $Max = 1 if ($Max < 1);
4406: if ( int($Max) < $Max ) {
4407: $Max++;
4408: $Max = int($Max);
4409: }
1.127 matthew 4410: $Title = '' if (! defined($Title));
4411: $xlabel = '' if (! defined($xlabel));
4412: $ylabel = '' if (! defined($ylabel));
1.136 matthew 4413: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
4414: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
4415: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
1.137 matthew 4416: $ValuesHash{$id.'.y_max_value'} = $Max;
1.136 matthew 4417: $ValuesHash{$id.'.NumBars'} = $NumBars;
4418: $ValuesHash{$id.'.NumSets'} = $NumSets;
4419: $ValuesHash{$id.'.PlotType'} = 'bar';
4420: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4421: $ValuesHash{$id.'.height'} = $height;
4422: $ValuesHash{$id.'.width'} = $width;
4423: $ValuesHash{$id.'.xskip'} = $xskip;
4424: $ValuesHash{$id.'.bar_width'} = $bar_width;
4425: $ValuesHash{$id.'.labels'} = join(',',@Labels);
1.127 matthew 4426: #
1.228 matthew 4427: # Deal with other parameters
4428: while (my ($key,$value) = each(%$extra_settings)) {
4429: $ValuesHash{$id.'.'.$key} = $value;
4430: }
4431: #
1.137 matthew 4432: &Apache::lonnet::appenv(%ValuesHash);
4433: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4434: }
4435:
4436: ############################################################
4437: ############################################################
4438:
4439: =pod
4440:
4441: =item DrawXYGraph
4442:
1.138 matthew 4443: Facilitates the plotting of data in an XY graph.
4444: Puts plot definition data into the users environment in order for
4445: graph.png to plot it. Returns an <img> tag for the plot.
4446:
4447: Inputs:
4448:
4449: =over 4
4450:
4451: =item $Title: string, the title of the plot
4452:
4453: =item $xlabel: string, text describing the X-axis of the plot
4454:
4455: =item $ylabel: string, text describing the Y-axis of the plot
4456:
4457: =item $Max: scalar, the maximum Y value to use in the plot
4458: If $Max is < any data point, the graph will not be rendered.
4459:
4460: =item $colors: Array ref containing the hex color codes for the data to be
4461: plotted in. If undefined, default values will be used.
4462:
4463: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4464:
4465: =item $Ydata: Array ref containing Array refs.
1.185 www 4466: Each of the contained arrays will be plotted as a separate curve.
1.138 matthew 4467:
4468: =item %Values: hash indicating or overriding any default values which are
4469: passed to graph.png.
4470: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4471:
4472: =back
4473:
4474: Returns:
4475:
4476: An <img> tag which references graph.png and the appropriate identifying
4477: information for the plot.
4478:
1.137 matthew 4479: =cut
4480:
4481: ############################################################
4482: ############################################################
4483: sub DrawXYGraph {
4484: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
4485: #
4486: # Create the identifier for the graph
4487: my $identifier = &get_cgi_id();
4488: my $id = 'cgi.'.$identifier;
4489: #
4490: $Title = '' if (! defined($Title));
4491: $xlabel = '' if (! defined($xlabel));
4492: $ylabel = '' if (! defined($ylabel));
4493: my %ValuesHash =
4494: (
4495: $id.'.title' => &Apache::lonnet::escape($Title),
4496: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4497: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4498: $id.'.y_max_value'=> $Max,
4499: $id.'.labels' => join(',',@$Xlabels),
4500: $id.'.PlotType' => 'XY',
4501: );
4502: #
4503: if (defined($colors) && ref($colors) eq 'ARRAY') {
4504: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4505: }
4506: #
4507: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
4508: return '';
4509: }
4510: my $NumSets=1;
1.138 matthew 4511: foreach my $array (@{$Ydata}){
1.137 matthew 4512: next if (! ref($array));
4513: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
4514: }
1.138 matthew 4515: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
1.137 matthew 4516: #
4517: # Deal with other parameters
4518: while (my ($key,$value) = each(%Values)) {
4519: $ValuesHash{$id.'.'.$key} = $value;
1.127 matthew 4520: }
4521: #
1.136 matthew 4522: &Apache::lonnet::appenv(%ValuesHash);
4523: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
4524: }
4525:
4526: ############################################################
4527: ############################################################
4528:
4529: =pod
4530:
1.138 matthew 4531: =item DrawXYYGraph
4532:
4533: Facilitates the plotting of data in an XY graph with two Y axes.
4534: Puts plot definition data into the users environment in order for
4535: graph.png to plot it. Returns an <img> tag for the plot.
4536:
4537: Inputs:
4538:
4539: =over 4
4540:
4541: =item $Title: string, the title of the plot
4542:
4543: =item $xlabel: string, text describing the X-axis of the plot
4544:
4545: =item $ylabel: string, text describing the Y-axis of the plot
4546:
4547: =item $colors: Array ref containing the hex color codes for the data to be
4548: plotted in. If undefined, default values will be used.
4549:
4550: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
4551:
4552: =item $Ydata1: The first data set
4553:
4554: =item $Min1: The minimum value of the left Y-axis
4555:
4556: =item $Max1: The maximum value of the left Y-axis
4557:
4558: =item $Ydata2: The second data set
4559:
4560: =item $Min2: The minimum value of the right Y-axis
4561:
4562: =item $Max2: The maximum value of the left Y-axis
4563:
4564: =item %Values: hash indicating or overriding any default values which are
4565: passed to graph.png.
4566: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
4567:
4568: =back
4569:
4570: Returns:
4571:
4572: An <img> tag which references graph.png and the appropriate identifying
4573: information for the plot.
1.136 matthew 4574:
4575: =cut
4576:
4577: ############################################################
4578: ############################################################
1.137 matthew 4579: sub DrawXYYGraph {
4580: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
4581: $Ydata2,$Min2,$Max2,%Values)=@_;
1.136 matthew 4582: #
4583: # Create the identifier for the graph
4584: my $identifier = &get_cgi_id();
4585: my $id = 'cgi.'.$identifier;
4586: #
4587: $Title = '' if (! defined($Title));
4588: $xlabel = '' if (! defined($xlabel));
4589: $ylabel = '' if (! defined($ylabel));
4590: my %ValuesHash =
4591: (
4592: $id.'.title' => &Apache::lonnet::escape($Title),
4593: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
4594: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
4595: $id.'.labels' => join(',',@$Xlabels),
4596: $id.'.PlotType' => 'XY',
4597: $id.'.NumSets' => 2,
1.137 matthew 4598: $id.'.two_axes' => 1,
4599: $id.'.y1_max_value' => $Max1,
4600: $id.'.y1_min_value' => $Min1,
4601: $id.'.y2_max_value' => $Max2,
4602: $id.'.y2_min_value' => $Min2,
1.136 matthew 4603: );
4604: #
1.137 matthew 4605: if (defined($colors) && ref($colors) eq 'ARRAY') {
4606: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
4607: }
4608: #
4609: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
4610: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
1.136 matthew 4611: return '';
4612: }
4613: my $NumSets=1;
1.137 matthew 4614: foreach my $array ($Ydata1,$Ydata2){
1.136 matthew 4615: next if (! ref($array));
4616: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
1.137 matthew 4617: }
4618: #
4619: # Deal with other parameters
4620: while (my ($key,$value) = each(%Values)) {
4621: $ValuesHash{$id.'.'.$key} = $value;
1.136 matthew 4622: }
4623: #
4624: &Apache::lonnet::appenv(%ValuesHash);
1.130 albertel 4625: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
1.139 matthew 4626: }
4627:
4628: ############################################################
4629: ############################################################
4630:
4631: =pod
4632:
1.157 matthew 4633: =back
4634:
1.139 matthew 4635: =head1 Statistics helper routines?
4636:
4637: Bad place for them but what the hell.
4638:
1.157 matthew 4639: =over 4
4640:
1.139 matthew 4641: =item &chartlink
4642:
4643: Returns a link to the chart for a specific student.
4644:
4645: Inputs:
4646:
4647: =over 4
4648:
4649: =item $linktext: The text of the link
4650:
4651: =item $sname: The students username
4652:
4653: =item $sdomain: The students domain
4654:
4655: =back
4656:
1.157 matthew 4657: =back
4658:
1.139 matthew 4659: =cut
4660:
4661: ############################################################
4662: ############################################################
4663: sub chartlink {
4664: my ($linktext, $sname, $sdomain) = @_;
4665: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
1.219 albertel 4666: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
4667: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
1.139 matthew 4668: '">'.$linktext.'</a>';
1.153 matthew 4669: }
4670:
4671: #######################################################
4672: #######################################################
4673:
4674: =pod
4675:
4676: =head1 Course Environment Routines
1.157 matthew 4677:
4678: =over 4
1.153 matthew 4679:
4680: =item &restore_course_settings
4681:
4682: =item &store_course_settings
4683:
4684: Restores/Store indicated form parameters from the course environment.
4685: Will not overwrite existing values of the form parameters.
4686:
4687: Inputs:
4688: a scalar describing the data (e.g. 'chart', 'problem_analysis')
4689:
4690: a hash ref describing the data to be stored. For example:
4691:
4692: %Save_Parameters = ('Status' => 'scalar',
4693: 'chartoutputmode' => 'scalar',
4694: 'chartoutputdata' => 'scalar',
4695: 'Section' => 'array',
4696: 'StudentData' => 'array',
4697: 'Maps' => 'array');
4698:
4699: Returns: both routines return nothing
4700:
4701: =cut
4702:
4703: #######################################################
4704: #######################################################
4705: sub store_course_settings {
4706: # save to the environment
4707: # appenv the same items, just to be safe
1.258 albertel 4708: my $courseid = $env{'request.course.id'};
1.300 albertel 4709: my $udom = $env{'user.domain'};
4710: my $uname = $env{'user.name'};
1.153 matthew 4711: my ($prefix,$Settings) = @_;
4712: my %SaveHash;
4713: my %AppHash;
4714: while (my ($setting,$type) = each(%$Settings)) {
1.300 albertel 4715: my $basename = join('.','internal',$courseid,$prefix,$setting);
4716: my $envname = 'environment.'.$basename;
1.258 albertel 4717: if (exists($env{'form.'.$setting})) {
1.153 matthew 4718: # Save this value away
4719: if ($type eq 'scalar' &&
1.258 albertel 4720: (! exists($env{$envname}) ||
4721: $env{$envname} ne $env{'form.'.$setting})) {
4722: $SaveHash{$basename} = $env{'form.'.$setting};
4723: $AppHash{$envname} = $env{'form.'.$setting};
1.153 matthew 4724: } elsif ($type eq 'array') {
4725: my $stored_form;
1.258 albertel 4726: if (ref($env{'form.'.$setting})) {
1.153 matthew 4727: $stored_form = join(',',
4728: map {
4729: &Apache::lonnet::escape($_);
1.258 albertel 4730: } sort(@{$env{'form.'.$setting}}));
1.153 matthew 4731: } else {
4732: $stored_form =
1.258 albertel 4733: &Apache::lonnet::escape($env{'form.'.$setting});
1.153 matthew 4734: }
4735: # Determine if the array contents are the same.
1.258 albertel 4736: if ($stored_form ne $env{$envname}) {
1.153 matthew 4737: $SaveHash{$basename} = $stored_form;
4738: $AppHash{$envname} = $stored_form;
4739: }
4740: }
4741: }
4742: }
4743: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
1.300 albertel 4744: $udom,$uname);
1.153 matthew 4745: if ($put_result !~ /^(ok|delayed)/) {
4746: &Apache::lonnet::logthis('unable to save form parameters, '.
4747: 'got error:'.$put_result);
4748: }
4749: # Make sure these settings stick around in this session, too
4750: &Apache::lonnet::appenv(%AppHash);
4751: return;
4752: }
4753:
4754: sub restore_course_settings {
1.258 albertel 4755: my $courseid = $env{'request.course.id'};
1.153 matthew 4756: my ($prefix,$Settings) = @_;
4757: while (my ($setting,$type) = each(%$Settings)) {
1.258 albertel 4758: next if (exists($env{'form.'.$setting}));
1.300 albertel 4759: my $envname = 'environment.internal.'.$courseid.'.'.$prefix.
1.153 matthew 4760: '.'.$setting;
1.258 albertel 4761: if (exists($env{$envname})) {
1.153 matthew 4762: if ($type eq 'scalar') {
1.258 albertel 4763: $env{'form.'.$setting} = $env{$envname};
1.153 matthew 4764: } elsif ($type eq 'array') {
1.258 albertel 4765: $env{'form.'.$setting} = [
1.153 matthew 4766: map {
4767: &Apache::lonnet::unescape($_);
1.258 albertel 4768: } split(',',$env{$envname})
1.153 matthew 4769: ];
4770: }
4771: }
4772: }
1.127 matthew 4773: }
4774:
4775: ############################################################
4776: ############################################################
1.154 albertel 4777:
4778: sub propath {
4779: my ($udom,$uname)=@_;
4780: $udom=~s/\W//g;
4781: $uname=~s/\W//g;
4782: my $subdir=$uname.'__';
4783: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4784: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
4785: return $proname;
1.156 albertel 4786: }
4787:
4788: sub icon {
4789: my ($file)=@_;
1.168 albertel 4790: my $curfext = (split(/\./,$file))[-1];
4791: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
1.156 albertel 4792: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
1.168 albertel 4793: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
4794: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
4795: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4796: $curfext.".gif") {
4797: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4798: $curfext.".gif";
4799: }
4800: }
1.249 albertel 4801: return &lonhttpdurl($iconname);
1.154 albertel 4802: }
1.84 albertel 4803:
1.215 albertel 4804: sub lonhttpdurl {
4805: my ($url)=@_;
4806: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
4807: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
4808: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
4809: }
4810:
1.213 albertel 4811: sub connection_aborted {
4812: my ($r)=@_;
4813: $r->print(" ");$r->rflush();
4814: my $c = $r->connection;
4815: return $c->aborted();
4816: }
4817:
1.221 foxr 4818: # Escapes strings that may have embedded 's that will be put into
1.222 foxr 4819: # strings as 'strings'.
4820: sub escape_single {
1.221 foxr 4821: my ($input) = @_;
1.223 albertel 4822: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
1.221 foxr 4823: $input =~ s/\'/\\\'/g; # Esacpe the 's....
4824: return $input;
4825: }
1.223 albertel 4826:
1.222 foxr 4827: # Same as escape_single, but escape's "'s This
4828: # can be used for "strings"
4829: sub escape_double {
4830: my ($input) = @_;
4831: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
4832: $input =~ s/\"/\\\"/g; # Esacpe the "s....
4833: return $input;
4834: }
1.223 albertel 4835:
1.222 foxr 4836: # Escapes the last element of a full URL.
4837: sub escape_url {
4838: my ($url) = @_;
1.238 raeburn 4839: my @urlslices = split(/\//, $url,-1);
1.223 albertel 4840: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
4841: return join('/',@urlslices).'/'.$lastitem;
1.222 foxr 4842: }
1.41 ng 4843: =pod
4844:
4845: =back
4846:
1.112 bowersj2 4847: =cut
1.41 ng 4848:
1.112 bowersj2 4849: 1;
4850: __END__;
1.41 ng 4851:
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