1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.201 2004/07/19 21:00:53 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: # Makes a table out of the previous attempts
30: # Inputs result_from_symbread, user, domain, course_id
31: # Reads in non-network-related .tab files
32:
33: # POD header:
34:
35: =pod
36:
37: =head1 NAME
38:
39: Apache::loncommon - pile of common routines
40:
41: =head1 SYNOPSIS
42:
43: Common routines for manipulating connections, student answers,
44: domains, common Javascript fragments, etc.
45:
46: =head1 OVERVIEW
47:
48: A collection of commonly used subroutines that don't have a natural
49: home anywhere else. This collection helps remove
50: redundancy from other modules and increase efficiency of memory usage.
51:
52: =cut
53:
54: # End of POD header
55: package Apache::loncommon;
56:
57: use strict;
58: use Apache::lonnet();
59: use GDBM_File;
60: use POSIX qw(strftime mktime);
61: use Apache::Constants qw(:common :http :methods);
62: use Apache::lonmsg();
63: use Apache::lonmenu();
64: use Apache::lonlocal;
65: use HTML::Entities;
66:
67: my $readit;
68:
69: ##
70: ## Global Variables
71: ##
72:
73: # ----------------------------------------------- Filetypes/Languages/Copyright
74: my %language;
75: my %supported_language;
76: my %cprtag;
77: my %scprtag;
78: my %fe; my %fd;
79: my %category_extensions;
80:
81: # ---------------------------------------------- Designs
82:
83: my %designhash;
84:
85: # ---------------------------------------------- Thesaurus variables
86: #
87: # %Keywords:
88: # A hash used by &keyword to determine if a word is considered a keyword.
89: # $thesaurus_db_file
90: # Scalar containing the full path to the thesaurus database.
91:
92: my %Keywords;
93: my $thesaurus_db_file;
94:
95: #
96: # Initialize values from language.tab, copyright.tab, filetypes.tab,
97: # thesaurus.tab, and filecategories.tab.
98: #
99: BEGIN {
100: # Variable initialization
101: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
102: #
103: unless ($readit) {
104: # ------------------------------------------------------------------- languages
105: {
106: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
107: '/language.tab';
108: if ( open(my $fh,"<$langtabfile") ) {
109: while (<$fh>) {
110: next if /^\#/;
111: chomp;
112: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
113: $language{$key}=$val.' - '.$enc;
114: if ($sup) {
115: $supported_language{$key}=$sup;
116: }
117: }
118: close($fh);
119: }
120: }
121: # ------------------------------------------------------------------ copyrights
122: {
123: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
124: '/copyright.tab';
125: if ( open (my $fh,"<$copyrightfile") ) {
126: while (<$fh>) {
127: next if /^\#/;
128: chomp;
129: my ($key,$val)=(split(/\s+/,$_,2));
130: $cprtag{$key}=$val;
131: }
132: close($fh);
133: }
134: }
135: # ------------------------------------------------------------------ source copyrights
136: {
137: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
138: '/source_copyright.tab';
139: if ( open (my $fh,"<$sourcecopyrightfile") ) {
140: while (<$fh>) {
141: next if /^\#/;
142: chomp;
143: my ($key,$val)=(split(/\s+/,$_,2));
144: $scprtag{$key}=$val;
145: }
146: close($fh);
147: }
148: }
149:
150: # -------------------------------------------------------------- domain designs
151:
152: my $filename;
153: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
154: opendir(DIR,$designdir);
155: while ($filename=readdir(DIR)) {
156: my ($domain)=($filename=~/^(\w+)\./);
157: {
158: my $designfile = $designdir.'/'.$filename;
159: if ( open (my $fh,"<$designfile") ) {
160: while (<$fh>) {
161: next if /^\#/;
162: chomp;
163: my ($key,$val)=(split(/\=/,$_));
164: if ($val) { $designhash{$domain.'.'.$key}=$val; }
165: }
166: close($fh);
167: }
168: }
169:
170: }
171: closedir(DIR);
172:
173:
174: # ------------------------------------------------------------- file categories
175: {
176: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
177: '/filecategories.tab';
178: if ( open (my $fh,"<$categoryfile") ) {
179: while (<$fh>) {
180: next if /^\#/;
181: chomp;
182: my ($extension,$category)=(split(/\s+/,$_,2));
183: push @{$category_extensions{lc($category)}},$extension;
184: }
185: close($fh);
186: }
187:
188: }
189: # ------------------------------------------------------------------ file types
190: {
191: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
192: '/filetypes.tab';
193: if ( open (my $fh,"<$typesfile") ) {
194: while (<$fh>) {
195: next if (/^\#/);
196: chomp;
197: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
198: if ($descr ne '') {
199: $fe{$ending}=lc($emb);
200: $fd{$ending}=$descr;
201: }
202: }
203: close($fh);
204: }
205: }
206: &Apache::lonnet::logthis(
207: "<font color=yellow>INFO: Read file types</font>");
208: $readit=1;
209: } # end of unless($readit)
210:
211: }
212:
213: ###############################################################
214: ## HTML and Javascript Helper Functions ##
215: ###############################################################
216:
217: =pod
218:
219: =head1 HTML and Javascript Functions
220:
221: =over 4
222:
223: =item * browser_and_searcher_javascript ()
224:
225: X<browsing, javascript>X<searching, javascript>Returns a string
226: containing javascript with two functions, C<openbrowser> and
227: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
228: tags.
229:
230: =item * openbrowser(formname,elementname,only,omit) [javascript]
231:
232: inputs: formname, elementname, only, omit
233:
234: formname and elementname indicate the name of the html form and name of
235: the element that the results of the browsing selection are to be placed in.
236:
237: Specifying 'only' will restrict the browser to displaying only files
238: with the given extension. Can be a comma separated list.
239:
240: Specifying 'omit' will restrict the browser to NOT displaying files
241: with the given extension. Can be a comma separated list.
242:
243: =item * opensearcher(formname, elementname) [javascript]
244:
245: Inputs: formname, elementname
246:
247: formname and elementname specify the name of the html form and the name
248: of the element the selection from the search results will be placed in.
249:
250: =cut
251:
252: sub browser_and_searcher_javascript {
253: my ($mode)=@_;
254: if (!defined($mode)) { $mode='edit'; }
255: my $resurl=&lastresurl();
256: return <<END;
257: var editbrowser = null;
258: function openbrowser(formname,elementname,only,omit,titleelement) {
259: var url = '$resurl/?';
260: if (editbrowser == null) {
261: url += 'launch=1&';
262: }
263: url += 'catalogmode=interactive&';
264: url += 'mode=$mode&';
265: url += 'form=' + formname + '&';
266: if (only != null) {
267: url += 'only=' + only + '&';
268: }
269: if (omit != null) {
270: url += 'omit=' + omit + '&';
271: }
272: if (titleelement != null) {
273: url += 'titleelement=' + titleelement + '&';
274: }
275: url += 'element=' + elementname + '';
276: var title = 'Browser';
277: var options = 'scrollbars=1,resizable=1,menubar=0';
278: options += ',width=700,height=600';
279: editbrowser = open(url,title,options,'1');
280: editbrowser.focus();
281: }
282: var editsearcher;
283: function opensearcher(formname,elementname,titleelement) {
284: var url = '/adm/searchcat?';
285: if (editsearcher == null) {
286: url += 'launch=1&';
287: }
288: url += 'catalogmode=interactive&';
289: url += 'mode=$mode&';
290: url += 'form=' + formname + '&';
291: if (titleelement != null) {
292: url += 'titleelement=' + titleelement + '&';
293: }
294: url += 'element=' + elementname + '';
295: var title = 'Search';
296: var options = 'scrollbars=1,resizable=1,menubar=0';
297: options += ',width=700,height=600';
298: editsearcher = open(url,title,options,'1');
299: editsearcher.focus();
300: }
301: END
302: }
303:
304: sub lastresurl {
305: if ($ENV{'environment.lastresurl'}) {
306: return $ENV{'environment.lastresurl'}
307: } else {
308: return '/res';
309: }
310: }
311:
312: sub storeresurl {
313: my $resurl=&Apache::lonnet::clutter(shift);
314: unless ($resurl=~/^\/res/) { return 0; }
315: $resurl=~s/\/$//;
316: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
317: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
318: return 1;
319: }
320:
321: sub studentbrowser_javascript {
322: unless (
323: (($ENV{'request.course.id'}) &&
324: (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})))
325: || ($ENV{'request.role'}=~/^(au|dc|su)/)
326: ) { return ''; }
327: return (<<'ENDSTDBRW');
328: <script type="text/javascript" language="Javascript" >
329: var stdeditbrowser;
330: function openstdbrowser(formname,uname,udom,roleflag) {
331: var url = '/adm/pickstudent?';
332: var filter;
333: eval('filter=document.'+formname+'.'+uname+'.value;');
334: if (filter != null) {
335: if (filter != '') {
336: url += 'filter='+filter+'&';
337: }
338: }
339: url += 'form=' + formname + '&unameelement='+uname+
340: '&udomelement='+udom;
341: if (roleflag) { url+="&roles=1"; }
342: var title = 'Student_Browser';
343: var options = 'scrollbars=1,resizable=1,menubar=0';
344: options += ',width=700,height=600';
345: stdeditbrowser = open(url,title,options,'1');
346: stdeditbrowser.focus();
347: }
348: </script>
349: ENDSTDBRW
350: }
351:
352: sub selectstudent_link {
353: my ($form,$unameele,$udomele)=@_;
354: if ($ENV{'request.course.id'}) {
355: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
356: return '';
357: }
358: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
359: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
360: }
361: if ($ENV{'request.role'}=~/^(au|dc|su)/) {
362: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
363: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
364: }
365: return '';
366: }
367:
368: sub coursebrowser_javascript {
369: my ($domainfilter)=@_;
370: return (<<ENDSTDBRW);
371: <script type="text/javascript" language="Javascript" >
372: var stdeditbrowser;
373: function opencrsbrowser(formname,uname,udom,desc) {
374: var url = '/adm/pickcourse?';
375: var filter;
376: if (filter != null) {
377: if (filter != '') {
378: url += 'filter='+filter+'&';
379: }
380: }
381: var domainfilter='$domainfilter';
382: if (domainfilter != null) {
383: if (domainfilter != '') {
384: url += 'domainfilter='+domainfilter+'&';
385: }
386: }
387: url += 'form=' + formname + '&cnumelement='+uname+
388: '&cdomelement='+udom+
389: '&cnameelement='+desc;
390: var title = 'Course_Browser';
391: var options = 'scrollbars=1,resizable=1,menubar=0';
392: options += ',width=700,height=600';
393: stdeditbrowser = open(url,title,options,'1');
394: stdeditbrowser.focus();
395: }
396: </script>
397: ENDSTDBRW
398: }
399:
400: sub selectcourse_link {
401: my ($form,$unameele,$udomele,$desc)=@_;
402: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
403: '","'.$udomele.'","'.$desc.'");'."'>".&mt('Select Course')."</a>";
404: }
405:
406: =pod
407:
408: =item * linked_select_forms(...)
409:
410: linked_select_forms returns a string containing a <script></script> block
411: and html for two <select> menus. The select menus will be linked in that
412: changing the value of the first menu will result in new values being placed
413: in the second menu. The values in the select menu will appear in alphabetical
414: order.
415:
416: linked_select_forms takes the following ordered inputs:
417:
418: =over 4
419:
420: =item * $formname, the name of the <form> tag
421:
422: =item * $middletext, the text which appears between the <select> tags
423:
424: =item * $firstdefault, the default value for the first menu
425:
426: =item * $firstselectname, the name of the first <select> tag
427:
428: =item * $secondselectname, the name of the second <select> tag
429:
430: =item * $hashref, a reference to a hash containing the data for the menus.
431:
432: =back
433:
434: Below is an example of such a hash. Only the 'text', 'default', and
435: 'select2' keys must appear as stated. keys(%menu) are the possible
436: values for the first select menu. The text that coincides with the
437: first menu value is given in $menu{$choice1}->{'text'}. The values
438: and text for the second menu are given in the hash pointed to by
439: $menu{$choice1}->{'select2'}.
440:
441: my %menu = ( A1 => { text =>"Choice A1" ,
442: default => "B3",
443: select2 => {
444: B1 => "Choice B1",
445: B2 => "Choice B2",
446: B3 => "Choice B3",
447: B4 => "Choice B4"
448: }
449: },
450: A2 => { text =>"Choice A2" ,
451: default => "C2",
452: select2 => {
453: C1 => "Choice C1",
454: C2 => "Choice C2",
455: C3 => "Choice C3"
456: }
457: },
458: A3 => { text =>"Choice A3" ,
459: default => "D6",
460: select2 => {
461: D1 => "Choice D1",
462: D2 => "Choice D2",
463: D3 => "Choice D3",
464: D4 => "Choice D4",
465: D5 => "Choice D5",
466: D6 => "Choice D6",
467: D7 => "Choice D7"
468: }
469: }
470: );
471:
472: =cut
473:
474: sub linked_select_forms {
475: my ($formname,
476: $middletext,
477: $firstdefault,
478: $firstselectname,
479: $secondselectname,
480: $hashref
481: ) = @_;
482: my $second = "document.$formname.$secondselectname";
483: my $first = "document.$formname.$firstselectname";
484: # output the javascript to do the changing
485: my $result = '';
486: $result.="<script>\n";
487: $result.="var select2data = new Object();\n";
488: $" = '","';
489: my $debug = '';
490: foreach my $s1 (sort(keys(%$hashref))) {
491: $result.="select2data.d_$s1 = new Object();\n";
492: $result.="select2data.d_$s1.def = new String('".
493: $hashref->{$s1}->{'default'}."');\n";
494: $result.="select2data.d_$s1.values = new Array(";
495: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
496: $result.="\"@s2values\");\n";
497: $result.="select2data.d_$s1.texts = new Array(";
498: my @s2texts;
499: foreach my $value (@s2values) {
500: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
501: }
502: $result.="\"@s2texts\");\n";
503: }
504: $"=' ';
505: $result.= <<"END";
506:
507: function select1_changed() {
508: // Determine new choice
509: var newvalue = "d_" + $first.value;
510: // update select2
511: var values = select2data[newvalue].values;
512: var texts = select2data[newvalue].texts;
513: var select2def = select2data[newvalue].def;
514: var i;
515: // out with the old
516: for (i = 0; i < $second.options.length; i++) {
517: $second.options[i] = null;
518: }
519: // in with the nuclear
520: for (i=0;i<values.length; i++) {
521: $second.options[i] = new Option(values[i]);
522: $second.options[i].value = values[i];
523: $second.options[i].text = texts[i];
524: if (values[i] == select2def) {
525: $second.options[i].selected = true;
526: }
527: }
528: }
529: </script>
530: END
531: # output the initial values for the selection lists
532: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
533: foreach my $value (sort(keys(%$hashref))) {
534: $result.=" <option value=\"$value\" ";
535: $result.=" selected=\"true\" " if ($value eq $firstdefault);
536: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
537: }
538: $result .= "</select>\n";
539: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
540: $result .= $middletext;
541: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
542: my $seconddefault = $hashref->{$firstdefault}->{'default'};
543: foreach my $value (sort(keys(%select2))) {
544: $result.=" <option value=\"$value\" ";
545: $result.=" selected=\"true\" " if ($value eq $seconddefault);
546: $result.=">".&mt($select2{$value})."</option>\n";
547: }
548: $result .= "</select>\n";
549: # return $debug;
550: return $result;
551: } # end of sub linked_select_forms {
552:
553: =pod
554:
555: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
556:
557: Returns a string corresponding to an HTML link to the given help
558: $topic, where $topic corresponds to the name of a .tex file in
559: /home/httpd/html/adm/help/tex, with underscores replaced by
560: spaces.
561:
562: $text will optionally be linked to the same topic, allowing you to
563: link text in addition to the graphic. If you do not want to link
564: text, but wish to specify one of the later parameters, pass an
565: empty string.
566:
567: $stayOnPage is a value that will be interpreted as a boolean. If true,
568: the link will not open a new window. If false, the link will open
569: a new window using Javascript. (Default is false.)
570:
571: $width and $height are optional numerical parameters that will
572: override the width and height of the popped up window, which may
573: be useful for certain help topics with big pictures included.
574:
575: =cut
576:
577: sub help_open_topic {
578: my ($topic, $text, $stayOnPage, $width, $height) = @_;
579: $text = "" if (not defined $text);
580: $stayOnPage = 0 if (not defined $stayOnPage);
581: if ($ENV{'browser.interface'} eq 'textual' ||
582: $ENV{'environment.remote'} eq 'off' ) {
583: $stayOnPage=1;
584: }
585: $width = 350 if (not defined $width);
586: $height = 400 if (not defined $height);
587: my $filename = $topic;
588: $filename =~ s/ /_/g;
589:
590: my $template = "";
591: my $link;
592:
593: $topic=~s/\W/\_/g;
594:
595: if (!$stayOnPage)
596: {
597: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
598: }
599: else
600: {
601: $link = "/adm/help/${filename}.hlp";
602: }
603:
604: # Add the text
605: if ($text ne "")
606: {
607: $template .=
608: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
609: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
610: }
611:
612: # Add the graphic
613: my $title = &mt('Online Help');
614: $template .= <<"ENDTEMPLATE";
615: <a href="$link" title="$title"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)" /></a>
616: ENDTEMPLATE
617: if ($text ne '') { $template.='</td></tr></table>' };
618: return $template;
619:
620: }
621:
622: # This is a quicky function for Latex cheatsheet editing, since it
623: # appears in at least four places
624: sub helpLatexCheatsheet {
625: my $other = shift;
626: my $addOther = '';
627: if ($other) {
628: $addOther = Apache::loncommon::help_open_topic($other, shift,
629: undef, undef, 600) .
630: '</td><td>';
631: }
632: return '<table><tr><td>'.
633: $addOther .
634: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
635: undef,undef,600)
636: .'</td><td>'.
637: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
638: undef,undef,600)
639: .'</td></tr></table>';
640: }
641:
642: sub help_open_menu {
643: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
644: $text = "" if (not defined $text);
645: $stayOnPage = 0 if (not defined $stayOnPage);
646: if ($ENV{'browser.interface'} eq 'textual' ||
647: $ENV{'environment.remote'} eq 'off' ) {
648: $stayOnPage=1;
649: }
650: $width = 620 if (not defined $width);
651: $height = 600 if (not defined $height);
652: my $link='';
653: my $title = &mt('Get help');
654: my $origurl = $ENV{'REQUEST_URI'};
655: my $timestamp = time;
656: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
657: $$_ = &Apache::lonnet::escape($$_);
658: }
659:
660: if (!$stayOnPage) {
661: $link = "javascript:helpMenu('open')";
662: } else {
663: $link = "javascript:helpMenu('display')";
664: }
665: 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";
666: 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";
667: my $template;
668: if ($text ne "") {
669: $template .=
670: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
671: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
672: }
673: $template .= <<"ENDTEMPLATE";
674: <script>
675: function helpMenu(caller) {
676: if (caller == 'open') {
677: newWindow = window.open("","helpmenu","HEIGHT=$height,WIDTH=$width,resize=yes,scrollbars=yes" )
678: caller = newWindow.document
679: } else {
680: caller = this.document
681: }
682: caller.write("<html><head><title>LON-CAPA Help Menu</title><meta http-equiv='pragma' content='no-cache'></head>")
683: caller.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
684: caller.write("</html>")
685: caller.close()
686: if (caller == newWindow.document) {
687: caller.focus()
688: }
689: }
690: </script>
691: <a href="$link" title="$title"><image src="/adm/lonMisc/smallFAQ.gif" border="0" alt="(Help Menu)" /></a>
692: ENDTEMPLATE
693: if ($text ne '') { $template.='</td></tr></table>' };
694: return $template;
695: }
696:
697: sub help_open_bug {
698: my ($topic, $text, $stayOnPage, $width, $height) = @_;
699: unless ($ENV{'user.adv'}) { return ''; }
700: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
701: $text = "" if (not defined $text);
702: $stayOnPage = 0 if (not defined $stayOnPage);
703: if ($ENV{'browser.interface'} eq 'textual' ||
704: $ENV{'environment.remote'} eq 'off' ) {
705: $stayOnPage=1;
706: }
707: $width = 600 if (not defined $width);
708: $height = 600 if (not defined $height);
709:
710: $topic=~s/\W+/\+/g;
711: my $link='';
712: my $template='';
713: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
714: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
715: if (!$stayOnPage)
716: {
717: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
718: }
719: else
720: {
721: $link = $url;
722: }
723: # Add the text
724: if ($text ne "")
725: {
726: $template .=
727: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
728: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
729: }
730:
731: # Add the graphic
732: my $title = &mt('Report a Bug');
733: $template .= <<"ENDTEMPLATE";
734: <a href="$link" title="$title"><image src="/adm/lonMisc/smallBug.gif" border="0" alt="(Bug: $topic)" /></a>
735: ENDTEMPLATE
736: if ($text ne '') { $template.='</td></tr></table>' };
737: return $template;
738:
739: }
740:
741: sub help_open_faq {
742: my ($topic, $text, $stayOnPage, $width, $height) = @_;
743: unless ($ENV{'user.adv'}) { return ''; }
744: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
745: $text = "" if (not defined $text);
746: $stayOnPage = 0 if (not defined $stayOnPage);
747: if ($ENV{'browser.interface'} eq 'textual' ||
748: $ENV{'environment.remote'} eq 'off' ) {
749: $stayOnPage=1;
750: }
751: $width = 350 if (not defined $width);
752: $height = 400 if (not defined $height);
753:
754: $topic=~s/\W+/\+/g;
755: my $link='';
756: my $template='';
757: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
758: if (!$stayOnPage)
759: {
760: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
761: }
762: else
763: {
764: $link = $url;
765: }
766:
767: # Add the text
768: if ($text ne "")
769: {
770: $template .=
771: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
772: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
773: }
774:
775: # Add the graphic
776: my $title = &mt('View the FAQ');
777: $template .= <<"ENDTEMPLATE";
778: <a href="$link" title="$title"><image src="/adm/lonMisc/smallFAQ.gif" border="0" alt="(FAQ: $topic)" /></a>
779: ENDTEMPLATE
780: if ($text ne '') { $template.='</td></tr></table>' };
781: return $template;
782:
783: }
784:
785: ###############################################################
786: ###############################################################
787:
788: =pod
789:
790: =item * csv_translate($text)
791:
792: Translate $text to allow it to be output as a 'comma separated values'
793: format.
794:
795: =cut
796:
797: ###############################################################
798: ###############################################################
799: sub csv_translate {
800: my $text = shift;
801: $text =~ s/\"/\"\"/g;
802: $text =~ s/\n//g;
803: return $text;
804: }
805:
806:
807: ###############################################################
808: ###############################################################
809:
810: =pod
811:
812: =item * define_excel_formats
813:
814: Define some commonly used Excel cell formats.
815:
816: Currently supported formats:
817:
818: =over 4
819:
820: =item header
821:
822: =item bold
823:
824: =item h1
825:
826: =item h2
827:
828: =item h3
829:
830: =item date
831:
832: =back
833:
834: Inputs: $workbook
835:
836: Returns: $format, a hash reference.
837:
838: =cut
839:
840: ###############################################################
841: ###############################################################
842: sub define_excel_formats {
843: my ($workbook) = @_;
844: my $format;
845: $format->{'header'} = $workbook->add_format(bold => 1,
846: bottom => 1,
847: align => 'center');
848: $format->{'bold'} = $workbook->add_format(bold=>1);
849: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
850: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
851: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
852: $format->{'date'} = $workbook->add_format(num_format=>
853: 'mmm d yyyy hh:mm AM/PM');
854: return $format;
855: }
856:
857: ###############################################################
858: ###############################################################
859:
860: =pod
861:
862: =item * change_content_javascript():
863:
864: This and the next function allow you to create small sections of an
865: otherwise static HTML page that you can update on the fly with
866: Javascript, even in Netscape 4.
867:
868: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
869: must be written to the HTML page once. It will prove the Javascript
870: function "change(name, content)". Calling the change function with the
871: name of the section
872: you want to update, matching the name passed to C<changable_area>, and
873: the new content you want to put in there, will put the content into
874: that area.
875:
876: B<Note>: Netscape 4 only reserves enough space for the changable area
877: to contain room for the original contents. You need to "make space"
878: for whatever changes you wish to make, and be B<sure> to check your
879: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
880: it's adequate for updating a one-line status display, but little more.
881: This script will set the space to 100% width, so you only need to
882: worry about height in Netscape 4.
883:
884: Modern browsers are much less limiting, and if you can commit to the
885: user not using Netscape 4, this feature may be used freely with
886: pretty much any HTML.
887:
888: =cut
889:
890: sub change_content_javascript {
891: # If we're on Netscape 4, we need to use Layer-based code
892: if ($ENV{'browser.type'} eq 'netscape' &&
893: $ENV{'browser.version'} =~ /^4\./) {
894: return (<<NETSCAPE4);
895: function change(name, content) {
896: doc = document.layers[name+"___escape"].layers[0].document;
897: doc.open();
898: doc.write(content);
899: doc.close();
900: }
901: NETSCAPE4
902: } else {
903: # Otherwise, we need to use semi-standards-compliant code
904: # (technically, "innerHTML" isn't standard but the equivalent
905: # is really scary, and every useful browser supports it
906: return (<<DOMBASED);
907: function change(name, content) {
908: element = document.getElementById(name);
909: element.innerHTML = content;
910: }
911: DOMBASED
912: }
913: }
914:
915: =pod
916:
917: =item * changable_area($name, $origContent):
918:
919: This provides a "changable area" that can be modified on the fly via
920: the Javascript code provided in C<change_content_javascript>. $name is
921: the name you will use to reference the area later; do not repeat the
922: same name on a given HTML page more then once. $origContent is what
923: the area will originally contain, which can be left blank.
924:
925: =cut
926:
927: sub changable_area {
928: my ($name, $origContent) = @_;
929:
930: if ($ENV{'browser.type'} eq 'netscape' &&
931: $ENV{'browser.version'} =~ /^4\./) {
932: # If this is netscape 4, we need to use the Layer tag
933: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
934: } else {
935: return "<span id='$name'>$origContent</span>";
936: }
937: }
938:
939: =pod
940:
941: =back
942:
943: =cut
944:
945: ###############################################################
946: ## Home server <option> list generating code ##
947: ###############################################################
948:
949: =pod
950:
951: =head1 Home Server option list generating code
952:
953: =over 4
954:
955: =item * get_domains()
956:
957: Returns an array containing each of the domains listed in the hosts.tab
958: file.
959:
960: =cut
961:
962: #-------------------------------------------
963: sub get_domains {
964: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
965: my @domains;
966: my %seen;
967: foreach (sort values(%Apache::lonnet::hostdom)) {
968: push (@domains,$_) unless $seen{$_}++;
969: }
970: return @domains;
971: }
972:
973: # ------------------------------------------
974:
975: sub domain_select {
976: my ($name,$value,$multiple)=@_;
977: my %domains=map {
978: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
979: } &get_domains;
980: if ($multiple) {
981: $domains{''}=&mt('Any domain');
982: return &multiple_select_form($name,$value,4,%domains);
983: } else {
984: return &select_form($name,$value,%domains);
985: }
986: }
987:
988: sub multiple_select_form {
989: my ($name,$value,$size,%hash)=@_;
990: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
991: my $output='';
992: if (! defined($size)) {
993: $size = 4;
994: if (scalar(keys(%hash))<4) {
995: $size = scalar(keys(%hash));
996: }
997: }
998: $output.="\n<select name='$name' size='$size' multiple='1'>";
999: foreach (sort(keys(%hash))) {
1000: $output.='<option value="'.$_.'" ';
1001: $output.='selected ' if ($selected{$_});
1002: $output.='>'.$hash{$_}."</option>\n";
1003: }
1004: $output.="</select>\n";
1005: return $output;
1006: }
1007:
1008: #-------------------------------------------
1009:
1010: =pod
1011:
1012: =item * select_form($defdom,$name,%hash)
1013:
1014: Returns a string containing a <select name='$name' size='1'> form to
1015: allow a user to select options from a hash option_name => displayed text.
1016: See lonrights.pm for an example invocation and use.
1017:
1018: =cut
1019:
1020: #-------------------------------------------
1021: sub select_form {
1022: my ($def,$name,%hash) = @_;
1023: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1024: my @keys;
1025: if (exists($hash{'select_form_order'})) {
1026: @keys=@{$hash{'select_form_order'}};
1027: } else {
1028: @keys=sort(keys(%hash));
1029: }
1030: foreach (@keys) {
1031: $selectform.="<option value=\"$_\" ".
1032: ($_ eq $def ? 'selected' : '').
1033: ">".&mt($hash{$_})."</option>\n";
1034: }
1035: $selectform.="</select>";
1036: return $selectform;
1037: }
1038:
1039: sub gradeleveldescription {
1040: my $gradelevel=shift;
1041: my %gradelevels=(0 => 'Not specified',
1042: 1 => 'Grade 1',
1043: 2 => 'Grade 2',
1044: 3 => 'Grade 3',
1045: 4 => 'Grade 4',
1046: 5 => 'Grade 5',
1047: 6 => 'Grade 6',
1048: 7 => 'Grade 7',
1049: 8 => 'Grade 8',
1050: 9 => 'Grade 9',
1051: 10 => 'Grade 10',
1052: 11 => 'Grade 11',
1053: 12 => 'Grade 12',
1054: 13 => 'Grade 13',
1055: 14 => '100 Level',
1056: 15 => '200 Level',
1057: 16 => '300 Level',
1058: 17 => '400 Level',
1059: 18 => 'Graduate Level');
1060: return &mt($gradelevels{$gradelevel});
1061: }
1062:
1063: sub select_level_form {
1064: my ($deflevel,$name)=@_;
1065: unless ($deflevel) { $deflevel=0; }
1066: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1067: for (my $i=0; $i<=18; $i++) {
1068: $selectform.="<option value=\"$i\" ".
1069: ($i==$deflevel ? 'selected' : '').
1070: ">".&gradeleveldescription($i)."</option>\n";
1071: }
1072: $selectform.="</select>";
1073: return $selectform;
1074: }
1075:
1076: #-------------------------------------------
1077:
1078: =pod
1079:
1080: =item * select_dom_form($defdom,$name,$includeempty)
1081:
1082: Returns a string containing a <select name='$name' size='1'> form to
1083: allow a user to select the domain to preform an operation in.
1084: See loncreateuser.pm for an example invocation and use.
1085:
1086: If the $includeempty flag is set, it also includes an empty choice ("no domain
1087: selected");
1088:
1089: =cut
1090:
1091: #-------------------------------------------
1092: sub select_dom_form {
1093: my ($defdom,$name,$includeempty) = @_;
1094: my @domains = get_domains();
1095: if ($includeempty) { @domains=('',@domains); }
1096: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1097: foreach (@domains) {
1098: $selectdomain.="<option value=\"$_\" ".
1099: ($_ eq $defdom ? 'selected' : '').
1100: ">$_</option>\n";
1101: }
1102: $selectdomain.="</select>";
1103: return $selectdomain;
1104: }
1105:
1106: #-------------------------------------------
1107:
1108: =pod
1109:
1110: =item * get_library_servers($domain)
1111:
1112: Returns a hash which contains keys like '103l3' and values like
1113: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1114: given $domain.
1115:
1116: =cut
1117:
1118: #-------------------------------------------
1119: sub get_library_servers {
1120: my $domain = shift;
1121: my %library_servers;
1122: foreach (keys(%Apache::lonnet::libserv)) {
1123: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1124: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1125: }
1126: }
1127: return %library_servers;
1128: }
1129:
1130: #-------------------------------------------
1131:
1132: =pod
1133:
1134: =item * home_server_option_list($domain)
1135:
1136: returns a string which contains an <option> list to be used in a
1137: <select> form input. See loncreateuser.pm for an example.
1138:
1139: =cut
1140:
1141: #-------------------------------------------
1142: sub home_server_option_list {
1143: my $domain = shift;
1144: my %servers = &get_library_servers($domain);
1145: my $result = '';
1146: foreach (sort keys(%servers)) {
1147: $result.=
1148: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1149: }
1150: return $result;
1151: }
1152:
1153: =pod
1154:
1155: =back
1156:
1157: =cut
1158:
1159: ###############################################################
1160: ## Decoding User Agent ##
1161: ###############################################################
1162:
1163: =pod
1164:
1165: =head1 Decoding the User Agent
1166:
1167: =over 4
1168:
1169: =item * &decode_user_agent()
1170:
1171: Inputs: $r
1172:
1173: Outputs:
1174:
1175: =over 4
1176:
1177: =item * $httpbrowser
1178:
1179: =item * $clientbrowser
1180:
1181: =item * $clientversion
1182:
1183: =item * $clientmathml
1184:
1185: =item * $clientunicode
1186:
1187: =item * $clientos
1188:
1189: =back
1190:
1191: =back
1192:
1193: =cut
1194:
1195: ###############################################################
1196: ###############################################################
1197: sub decode_user_agent {
1198: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1199: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1200: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1201: my $clientbrowser='unknown';
1202: my $clientversion='0';
1203: my $clientmathml='';
1204: my $clientunicode='0';
1205: for (my $i=0;$i<=$#browsertype;$i++) {
1206: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1207: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1208: $clientbrowser=$bname;
1209: $httpbrowser=~/$vreg/i;
1210: $clientversion=$1;
1211: $clientmathml=($clientversion>=$minv);
1212: $clientunicode=($clientversion>=$univ);
1213: }
1214: }
1215: my $clientos='unknown';
1216: if (($httpbrowser=~/linux/i) ||
1217: ($httpbrowser=~/unix/i) ||
1218: ($httpbrowser=~/ux/i) ||
1219: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1220: if (($httpbrowser=~/vax/i) ||
1221: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1222: if ($httpbrowser=~/next/i) { $clientos='next'; }
1223: if (($httpbrowser=~/mac/i) ||
1224: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1225: if ($httpbrowser=~/win/i) { $clientos='win'; }
1226: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1227: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1228: $clientunicode,$clientos,);
1229: }
1230:
1231: ###############################################################
1232: ## Authentication changing form generation subroutines ##
1233: ###############################################################
1234: ##
1235: ## All of the authform_xxxxxxx subroutines take their inputs in a
1236: ## hash, and have reasonable default values.
1237: ##
1238: ## formname = the name given in the <form> tag.
1239: #-------------------------------------------
1240:
1241: =pod
1242:
1243: =head1 Authentication Routines
1244:
1245: =over 4
1246:
1247: =item * authform_xxxxxx
1248:
1249: The authform_xxxxxx subroutines provide javascript and html forms which
1250: handle some of the conveniences required for authentication forms.
1251: This is not an optimal method, but it works.
1252:
1253: See loncreateuser.pm for invocation and use examples.
1254:
1255: =over 4
1256:
1257: =item * authform_header
1258:
1259: =item * authform_authorwarning
1260:
1261: =item * authform_nochange
1262:
1263: =item * authform_kerberos
1264:
1265: =item * authform_internal
1266:
1267: =item * authform_filesystem
1268:
1269: =back
1270:
1271: =back
1272:
1273: =cut
1274:
1275: #-------------------------------------------
1276: sub authform_header{
1277: my %in = (
1278: formname => 'cu',
1279: kerb_def_dom => '',
1280: @_,
1281: );
1282: $in{'formname'} = 'document.' . $in{'formname'};
1283: my $result='';
1284:
1285: #---------------------------------------------- Code for upper case translation
1286: my $Javascript_toUpperCase;
1287: unless ($in{kerb_def_dom}) {
1288: $Javascript_toUpperCase =<<"END";
1289: switch (choice) {
1290: case 'krb': currentform.elements[choicearg].value =
1291: currentform.elements[choicearg].value.toUpperCase();
1292: break;
1293: default:
1294: }
1295: END
1296: } else {
1297: $Javascript_toUpperCase = "";
1298: }
1299:
1300: my $radioval = "'nochange'";
1301: if (exists($in{'curr_authtype'}) &&
1302: defined($in{'curr_authtype'}) &&
1303: $in{'curr_authtype'} ne '') {
1304: $radioval = "'$in{'curr_authtype'}arg'";
1305: }
1306: my $argfield = 'null';
1307: if ( grep/^mode$/,(keys %in) ) {
1308: if ($in{'mode'} eq 'modifycourse') {
1309: if ( grep/^curr_authtype$/,(keys %in) ) {
1310: $radioval = "'$in{'curr_authtype'}'";
1311: }
1312: if ( grep/^curr_autharg$/,(keys %in) ) {
1313: unless ($in{'curr_autharg'} eq '') {
1314: $argfield = "'$in{'curr_autharg'}'";
1315: }
1316: }
1317: }
1318: }
1319:
1320: $result.=<<"END";
1321: var current = new Object();
1322: current.radiovalue = $radioval;
1323: current.argfield = $argfield;
1324:
1325: function changed_radio(choice,currentform) {
1326: var choicearg = choice + 'arg';
1327: // If a radio button in changed, we need to change the argfield
1328: if (current.radiovalue != choice) {
1329: current.radiovalue = choice;
1330: if (current.argfield != null) {
1331: currentform.elements[current.argfield].value = '';
1332: }
1333: if (choice == 'nochange') {
1334: current.argfield = null;
1335: } else {
1336: current.argfield = choicearg;
1337: switch(choice) {
1338: case 'krb':
1339: currentform.elements[current.argfield].value =
1340: "$in{'kerb_def_dom'}";
1341: break;
1342: default:
1343: break;
1344: }
1345: }
1346: }
1347: return;
1348: }
1349:
1350: function changed_text(choice,currentform) {
1351: var choicearg = choice + 'arg';
1352: if (currentform.elements[choicearg].value !='') {
1353: $Javascript_toUpperCase
1354: // clear old field
1355: if ((current.argfield != choicearg) && (current.argfield != null)) {
1356: currentform.elements[current.argfield].value = '';
1357: }
1358: current.argfield = choicearg;
1359: }
1360: set_auth_radio_buttons(choice,currentform);
1361: return;
1362: }
1363:
1364: function set_auth_radio_buttons(newvalue,currentform) {
1365: var i=0;
1366: while (i < currentform.login.length) {
1367: if (currentform.login[i].value == newvalue) { break; }
1368: i++;
1369: }
1370: if (i == currentform.login.length) {
1371: return;
1372: }
1373: current.radiovalue = newvalue;
1374: currentform.login[i].checked = true;
1375: return;
1376: }
1377: END
1378: return $result;
1379: }
1380:
1381: sub authform_authorwarning{
1382: my $result='';
1383: $result='<i>'.
1384: &mt('As a general rule, only authors or co-authors should be '.
1385: 'filesystem authenticated '.
1386: '(which allows access to the server filesystem).')."</i>\n";
1387: return $result;
1388: }
1389:
1390: sub authform_nochange{
1391: my %in = (
1392: formname => 'document.cu',
1393: kerb_def_dom => 'MSU.EDU',
1394: @_,
1395: );
1396: my $result = &mt('[_1] Do not change login data',
1397: '<input type="radio" name="login" value="nochange" '.
1398: 'checked="checked" onclick="'.
1399: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1400: return $result;
1401: }
1402:
1403: sub authform_kerberos{
1404: my %in = (
1405: formname => 'document.cu',
1406: kerb_def_dom => 'MSU.EDU',
1407: kerb_def_auth => 'krb4',
1408: @_,
1409: );
1410: my ($check4,$check5,$krbarg);
1411: if ($in{'kerb_def_auth'} eq 'krb5') {
1412: $check5 = " checked=\"on\"";
1413: } else {
1414: $check4 = " checked=\"on\"";
1415: }
1416: $krbarg = $in{'kerb_def_dom'};
1417:
1418: my $krbcheck = "";
1419: if ( grep/^curr_authtype$/,(keys %in) ) {
1420: if ($in{'curr_authtype'} =~ m/^krb/) {
1421: $krbcheck = " checked=\"on\"";
1422: if ( grep/^curr_autharg$/,(keys %in) ) {
1423: $krbarg = $in{'curr_autharg'};
1424: }
1425: }
1426: }
1427:
1428: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1429: my $result .= &mt
1430: ('[_1] Kerberos authenticated with domain [_2] '.
1431: '[_3] Version 4 [_4] Version 5',
1432: '<input type="radio" name="login" value="krb" '.
1433: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1434: '<input type="text" size="10" name="krbarg" '.
1435: 'value="'.$krbarg.'" '.
1436: 'onchange="'.$jscall.'" />',
1437: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1438: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1439: return $result;
1440: }
1441:
1442: sub authform_internal{
1443: my %args = (
1444: formname => 'document.cu',
1445: kerb_def_dom => 'MSU.EDU',
1446: @_,
1447: );
1448:
1449: my $intcheck = "";
1450: my $intarg = 'value=""';
1451: if ( grep/^curr_authtype$/,(keys %args) ) {
1452: if ($args{'curr_authtype'} eq 'int') {
1453: $intcheck = " checked=\"on\"";
1454: if ( grep/^curr_autharg$/,(keys %args) ) {
1455: $intarg = "value=\"$args{'curr_autharg'}\"";
1456: }
1457: }
1458: }
1459:
1460: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1461: my $result.=&mt
1462: ('[_1] Internally authenticated (with initial password [_2])',
1463: '<input type="radio" name="login" value="int" '.$intcheck.
1464: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1465: '<input type="text" size="10" name="intarg" '.$intarg.
1466: ' onchange="'.$jscall.'" />');
1467: return $result;
1468: }
1469:
1470: sub authform_local{
1471: my %in = (
1472: formname => 'document.cu',
1473: kerb_def_dom => 'MSU.EDU',
1474: @_,
1475: );
1476:
1477: my $loccheck = "";
1478: my $locarg = 'value=""';
1479: if ( grep/^curr_authtype$/,(keys %in) ) {
1480: if ($in{'curr_authtype'} eq 'loc') {
1481: $loccheck = " checked=\"on\"";
1482: if ( grep/^curr_autharg$/,(keys %in) ) {
1483: $locarg = "value=\"$in{'curr_autharg'}\"";
1484: }
1485: }
1486: }
1487:
1488: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1489: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1490: '<input type="radio" name="login" value="loc" '.$loccheck.
1491: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1492: '<input type="text" size="10" name="locarg" '.$locarg.
1493: ' onchange="'.$jscall.'" />');
1494: return $result;
1495: }
1496:
1497: sub authform_filesystem{
1498: my %in = (
1499: formname => 'document.cu',
1500: kerb_def_dom => 'MSU.EDU',
1501: @_,
1502: );
1503: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1504: my $result.= &mt
1505: ('[_1] Filesystem Authenticated (with initial password [_2])',
1506: '<input type="radio" name="login" value="fsys" '.
1507: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1508: '<input type="text" size="10" name="fsysarg" value="" '.
1509: 'onchange="'.$jscall.'" />');
1510: return $result;
1511: }
1512:
1513: ###############################################################
1514: ## Get Authentication Defaults for Domain ##
1515: ###############################################################
1516:
1517: =pod
1518:
1519: =head1 Domains and Authentication
1520:
1521: Returns default authentication type and an associated argument as
1522: listed in file 'domain.tab'.
1523:
1524: =over 4
1525:
1526: =item * get_auth_defaults
1527:
1528: get_auth_defaults($target_domain) returns the default authentication
1529: type and an associated argument (initial password or a kerberos domain).
1530: These values are stored in lonTabs/domain.tab
1531:
1532: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1533:
1534: If target_domain is not found in domain.tab, returns nothing ('').
1535:
1536: =cut
1537:
1538: #-------------------------------------------
1539: sub get_auth_defaults {
1540: my $domain=shift;
1541: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1542: }
1543: ###############################################################
1544: ## End Get Authentication Defaults for Domain ##
1545: ###############################################################
1546:
1547: ###############################################################
1548: ## Get Kerberos Defaults for Domain ##
1549: ###############################################################
1550: ##
1551: ## Returns default kerberos version and an associated argument
1552: ## as listed in file domain.tab. If not listed, provides
1553: ## appropriate default domain and kerberos version.
1554: ##
1555: #-------------------------------------------
1556:
1557: =pod
1558:
1559: =item * get_kerberos_defaults
1560:
1561: get_kerberos_defaults($target_domain) returns the default kerberos
1562: version and domain. If not found in domain.tabs, it defaults to
1563: version 4 and the domain of the server.
1564:
1565: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1566:
1567: =cut
1568:
1569: #-------------------------------------------
1570: sub get_kerberos_defaults {
1571: my $domain=shift;
1572: my ($krbdef,$krbdefdom) =
1573: &Apache::loncommon::get_auth_defaults($domain);
1574: unless ($krbdef =~/^krb/ && $krbdefdom) {
1575: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1576: my $krbdefdom=$1;
1577: $krbdefdom=~tr/a-z/A-Z/;
1578: $krbdef = "krb4";
1579: }
1580: return ($krbdef,$krbdefdom);
1581: }
1582:
1583: =pod
1584:
1585: =back
1586:
1587: =cut
1588:
1589: ###############################################################
1590: ## Thesaurus Functions ##
1591: ###############################################################
1592:
1593: =pod
1594:
1595: =head1 Thesaurus Functions
1596:
1597: =over 4
1598:
1599: =item * initialize_keywords
1600:
1601: Initializes the package variable %Keywords if it is empty. Uses the
1602: package variable $thesaurus_db_file.
1603:
1604: =cut
1605:
1606: ###################################################
1607:
1608: sub initialize_keywords {
1609: return 1 if (scalar keys(%Keywords));
1610: # If we are here, %Keywords is empty, so fill it up
1611: # Make sure the file we need exists...
1612: if (! -e $thesaurus_db_file) {
1613: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1614: " failed because it does not exist");
1615: return 0;
1616: }
1617: # Set up the hash as a database
1618: my %thesaurus_db;
1619: if (! tie(%thesaurus_db,'GDBM_File',
1620: $thesaurus_db_file,&GDBM_READER(),0640)){
1621: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1622: $thesaurus_db_file);
1623: return 0;
1624: }
1625: # Get the average number of appearances of a word.
1626: my $avecount = $thesaurus_db{'average.count'};
1627: # Put keywords (those that appear > average) into %Keywords
1628: while (my ($word,$data)=each (%thesaurus_db)) {
1629: my ($count,undef) = split /:/,$data;
1630: $Keywords{$word}++ if ($count > $avecount);
1631: }
1632: untie %thesaurus_db;
1633: # Remove special values from %Keywords.
1634: foreach ('total.count','average.count') {
1635: delete($Keywords{$_}) if (exists($Keywords{$_}));
1636: }
1637: return 1;
1638: }
1639:
1640: ###################################################
1641:
1642: =pod
1643:
1644: =item * keyword($word)
1645:
1646: Returns true if $word is a keyword. A keyword is a word that appears more
1647: than the average number of times in the thesaurus database. Calls
1648: &initialize_keywords
1649:
1650: =cut
1651:
1652: ###################################################
1653:
1654: sub keyword {
1655: return if (!&initialize_keywords());
1656: my $word=lc(shift());
1657: $word=~s/\W//g;
1658: return exists($Keywords{$word});
1659: }
1660:
1661: ###############################################################
1662:
1663: =pod
1664:
1665: =item * get_related_words
1666:
1667: Look up a word in the thesaurus. Takes a scalar argument and returns
1668: an array of words. If the keyword is not in the thesaurus, an empty array
1669: will be returned. The order of the words returned is determined by the
1670: database which holds them.
1671:
1672: Uses global $thesaurus_db_file.
1673:
1674: =cut
1675:
1676: ###############################################################
1677: sub get_related_words {
1678: my $keyword = shift;
1679: my %thesaurus_db;
1680: if (! -e $thesaurus_db_file) {
1681: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1682: "failed because the file does not exist");
1683: return ();
1684: }
1685: if (! tie(%thesaurus_db,'GDBM_File',
1686: $thesaurus_db_file,&GDBM_READER(),0640)){
1687: return ();
1688: }
1689: my @Words=();
1690: if (exists($thesaurus_db{$keyword})) {
1691: $_ = $thesaurus_db{$keyword};
1692: (undef,@Words) = split/:/; # The first element is the number of times
1693: # the word appears. We do not need it now.
1694: for (my $i=0;$i<=$#Words;$i++) {
1695: ($Words[$i],undef)= split/\,/,$Words[$i];
1696: }
1697: }
1698: untie %thesaurus_db;
1699: return @Words;
1700: }
1701:
1702: =pod
1703:
1704: =back
1705:
1706: =cut
1707:
1708: # -------------------------------------------------------------- Plaintext name
1709: =pod
1710:
1711: =head1 User Name Functions
1712:
1713: =over 4
1714:
1715: =item * plainname($uname,$udom)
1716:
1717: Takes a users logon name and returns it as a string in
1718: "first middle last generation" form
1719:
1720: =cut
1721:
1722: ###############################################################
1723: sub plainname {
1724: my ($uname,$udom)=@_;
1725: my %names=&Apache::lonnet::get('environment',
1726: ['firstname','middlename','lastname','generation'],
1727: $udom,$uname);
1728: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1729: $names{'lastname'}.' '.$names{'generation'};
1730: $name=~s/\s+$//;
1731: $name=~s/\s+/ /g;
1732: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1733: return $name;
1734: }
1735:
1736: # -------------------------------------------------------------------- Nickname
1737: =pod
1738:
1739: =item * nickname($uname,$udom)
1740:
1741: Gets a users name and returns it as a string as
1742:
1743: ""nickname""
1744:
1745: if the user has a nickname or
1746:
1747: "first middle last generation"
1748:
1749: if the user does not
1750:
1751: =cut
1752:
1753: sub nickname {
1754: my ($uname,$udom)=@_;
1755: my %names=&Apache::lonnet::get('environment',
1756: ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
1757: my $name=$names{'nickname'};
1758: if ($name) {
1759: $name='"'.$name.'"';
1760: } else {
1761: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1762: $names{'lastname'}.' '.$names{'generation'};
1763: $name=~s/\s+$//;
1764: $name=~s/\s+/ /g;
1765: }
1766: return $name;
1767: }
1768:
1769:
1770: # ------------------------------------------------------------------ Screenname
1771:
1772: =pod
1773:
1774: =item * screenname($uname,$udom)
1775:
1776: Gets a users screenname and returns it as a string
1777:
1778: =cut
1779:
1780: sub screenname {
1781: my ($uname,$udom)=@_;
1782: my %names=
1783: &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1784: return $names{'screenname'};
1785: }
1786:
1787: # ------------------------------------------------------------- Message Wrapper
1788:
1789: sub messagewrapper {
1790: my ($link,$username,$domain)=@_;
1791: return
1792: '<a href="/adm/email?compose=individual&'.
1793: 'recname='.$username.'&recdom='.$domain.'" '.
1794: 'title="'.&mt('Send message').'">'.$link.'</a>';
1795: }
1796: # --------------------------------------------------------------- Notes Wrapper
1797:
1798: sub noteswrapper {
1799: my ($link,$un,$do)=@_;
1800: return
1801: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1802: }
1803: # ------------------------------------------------------------- Aboutme Wrapper
1804:
1805: sub aboutmewrapper {
1806: my ($link,$username,$domain,$target)=@_;
1807: return '<a href="/adm/$domain/$username/aboutme"'.
1808: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1809: }
1810:
1811: # ------------------------------------------------------------ Syllabus Wrapper
1812:
1813:
1814: sub syllabuswrapper {
1815: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1816: if ($fontcolor) {
1817: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1818: }
1819: return "<a href='/public/$domain/$coursedir/syllabus'>$linktext</a>";
1820: }
1821:
1822: =pod
1823:
1824: =back
1825:
1826: =head1 Access .tab File Data
1827:
1828: =over 4
1829:
1830: =item * languageids()
1831:
1832: returns list of all language ids
1833:
1834: =cut
1835:
1836: sub languageids {
1837: return sort(keys(%language));
1838: }
1839:
1840: =pod
1841:
1842: =item * languagedescription()
1843:
1844: returns description of a specified language id
1845:
1846: =cut
1847:
1848: sub languagedescription {
1849: my $code=shift;
1850: return ($supported_language{$code}?'* ':'').
1851: $language{$code}.
1852: ($supported_language{$code}?' ('.&mt('interface available').')':'');
1853: }
1854:
1855: sub plainlanguagedescription {
1856: my $code=shift;
1857: return $language{$code};
1858: }
1859:
1860: sub supportedlanguagecode {
1861: my $code=shift;
1862: return $supported_language{$code};
1863: }
1864:
1865: =pod
1866:
1867: =item * copyrightids()
1868:
1869: returns list of all copyrights
1870:
1871: =cut
1872:
1873: sub copyrightids {
1874: return sort(keys(%cprtag));
1875: }
1876:
1877: =pod
1878:
1879: =item * copyrightdescription()
1880:
1881: returns description of a specified copyright id
1882:
1883: =cut
1884:
1885: sub copyrightdescription {
1886: return &mt($cprtag{shift(@_)});
1887: }
1888:
1889: =pod
1890:
1891: =item * source_copyrightids()
1892:
1893: returns list of all source copyrights
1894:
1895: =cut
1896:
1897: sub source_copyrightids {
1898: return sort(keys(%scprtag));
1899: }
1900:
1901: =pod
1902:
1903: =item * source_copyrightdescription()
1904:
1905: returns description of a specified source copyright id
1906:
1907: =cut
1908:
1909: sub source_copyrightdescription {
1910: return &mt($scprtag{shift(@_)});
1911: }
1912:
1913: =pod
1914:
1915: =item * filecategories()
1916:
1917: returns list of all file categories
1918:
1919: =cut
1920:
1921: sub filecategories {
1922: return sort(keys(%category_extensions));
1923: }
1924:
1925: =pod
1926:
1927: =item * filecategorytypes()
1928:
1929: returns list of file types belonging to a given file
1930: category
1931:
1932: =cut
1933:
1934: sub filecategorytypes {
1935: return @{$category_extensions{lc($_[0])}};
1936: }
1937:
1938: =pod
1939:
1940: =item * fileembstyle()
1941:
1942: returns embedding style for a specified file type
1943:
1944: =cut
1945:
1946: sub fileembstyle {
1947: return $fe{lc(shift(@_))};
1948: }
1949:
1950:
1951: sub filecategoryselect {
1952: my ($name,$value)=@_;
1953: return &select_form($value,$name,
1954: '' => &mt('Any category'),
1955: map { $_,$_ } sort(keys(%category_extensions)));
1956: }
1957:
1958: =pod
1959:
1960: =item * filedescription()
1961:
1962: returns description for a specified file type
1963:
1964: =cut
1965:
1966: sub filedescription {
1967: my $file_description = $fd{lc(shift())};
1968: $file_description =~ s:([\[\]]):~$1:g;
1969: return &mt($file_description);
1970: }
1971:
1972: =pod
1973:
1974: =item * filedescriptionex()
1975:
1976: returns description for a specified file type with
1977: extra formatting
1978:
1979: =cut
1980:
1981: sub filedescriptionex {
1982: my $ex=shift;
1983: my $file_description = $fd{lc($ex)};
1984: $file_description =~ s:([\[\]]):~$1:g;
1985: return '.'.$ex.' '.&mt($file_description);
1986: }
1987:
1988: # End of .tab access
1989: =pod
1990:
1991: =back
1992:
1993: =cut
1994:
1995: # ------------------------------------------------------------------ File Types
1996: sub fileextensions {
1997: return sort(keys(%fe));
1998: }
1999:
2000: # ----------------------------------------------------------- Display Languages
2001: # returns a hash with all desired display languages
2002: #
2003:
2004: sub display_languages {
2005: my %languages=();
2006: foreach (&preferred_languages()) {
2007: $languages{$_}=1;
2008: }
2009: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2010: if ($ENV{'form.displaylanguage'}) {
2011: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
2012: $languages{$_}=1;
2013: }
2014: }
2015: return %languages;
2016: }
2017:
2018: sub preferred_languages {
2019: my @languages=();
2020: if ($ENV{'course.'.$ENV{'request.course.id'}.'.languages'}) {
2021: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2022: $ENV{'course.'.$ENV{'request.course.id'}.'.languages'}));
2023: }
2024: if ($ENV{'environment.languages'}) {
2025: @languages=split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'});
2026: }
2027: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2028: if ($browser) {
2029: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2030: }
2031: if ($Apache::lonnet::domain_lang_def{$ENV{'user.domain'}}) {
2032: @languages=(@languages,
2033: $Apache::lonnet::domain_lang_def{$ENV{'user.domain'}});
2034: }
2035: if ($Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}}) {
2036: @languages=(@languages,
2037: $Apache::lonnet::domain_lang_def{$ENV{'request.role.domain'}});
2038: }
2039: if ($Apache::lonnet::domain_lang_def{
2040: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2041: @languages=(@languages,
2042: $Apache::lonnet::domain_lang_def{
2043: $Apache::lonnet::perlvar{'lonDefDomain'}});
2044: }
2045: # turn "en-ca" into "en-ca,en"
2046: my @genlanguages;
2047: foreach (@languages) {
2048: unless ($_=~/\w/) { next; }
2049: push (@genlanguages,$_);
2050: if ($_=~/(\-|\_)/) {
2051: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2052: }
2053: }
2054: return @genlanguages;
2055: }
2056:
2057: ###############################################################
2058: ## Student Answer Attempts ##
2059: ###############################################################
2060:
2061: =pod
2062:
2063: =head1 Alternate Problem Views
2064:
2065: =over 4
2066:
2067: =item * get_previous_attempt($symb, $username, $domain, $course,
2068: $getattempt, $regexp, $gradesub)
2069:
2070: Return string with previous attempt on problem. Arguments:
2071:
2072: =over 4
2073:
2074: =item * $symb: Problem, including path
2075:
2076: =item * $username: username of the desired student
2077:
2078: =item * $domain: domain of the desired student
2079:
2080: =item * $course: Course ID
2081:
2082: =item * $getattempt: Leave blank for all attempts, otherwise put
2083: something
2084:
2085: =item * $regexp: if string matches this regexp, the string will be
2086: sent to $gradesub
2087:
2088: =item * $gradesub: routine that processes the string if it matches $regexp
2089:
2090: =back
2091:
2092: The output string is a table containing all desired attempts, if any.
2093:
2094: =cut
2095:
2096: sub get_previous_attempt {
2097: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2098: my $prevattempts='';
2099: no strict 'refs';
2100: if ($symb) {
2101: my (%returnhash)=
2102: &Apache::lonnet::restore($symb,$course,$domain,$username);
2103: if ($returnhash{'version'}) {
2104: my %lasthash=();
2105: my $version;
2106: for ($version=1;$version<=$returnhash{'version'};$version++) {
2107: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2108: $lasthash{$_}=$returnhash{$version.':'.$_};
2109: }
2110: }
2111: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2112: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2113: foreach (sort(keys %lasthash)) {
2114: my ($ign,@parts) = split(/\./,$_);
2115: if ($#parts > 0) {
2116: my $data=$parts[-1];
2117: pop(@parts);
2118: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2119: } else {
2120: if ($#parts == 0) {
2121: $prevattempts.='<th>'.$parts[0].'</th>';
2122: } else {
2123: $prevattempts.='<th>'.$ign.'</th>';
2124: }
2125: }
2126: }
2127: if ($getattempt eq '') {
2128: for ($version=1;$version<=$returnhash{'version'};$version++) {
2129: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2130: foreach (sort(keys %lasthash)) {
2131: my $value;
2132: if ($_ =~ /timestamp/) {
2133: $value=scalar(localtime($returnhash{$version.':'.$_}));
2134: } else {
2135: $value=$returnhash{$version.':'.$_};
2136: }
2137: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2138: }
2139: }
2140: }
2141: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2142: foreach (sort(keys %lasthash)) {
2143: my $value;
2144: if ($_ =~ /timestamp/) {
2145: $value=scalar(localtime($lasthash{$_}));
2146: } else {
2147: $value=$lasthash{$_};
2148: }
2149: $value=&Apache::lonnet::unescape($value);
2150: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2151: $prevattempts.='<td>'.$value.' </td>';
2152: }
2153: $prevattempts.='</tr></table></td></tr></table>';
2154: } else {
2155: $prevattempts='Nothing submitted - no attempts.';
2156: }
2157: } else {
2158: $prevattempts='No data.';
2159: }
2160: }
2161:
2162: sub relative_to_absolute {
2163: my ($url,$output)=@_;
2164: my $parser=HTML::TokeParser->new(\$output);
2165: my $token;
2166: my $thisdir=$url;
2167: my @rlinks=();
2168: while ($token=$parser->get_token) {
2169: if ($token->[0] eq 'S') {
2170: if ($token->[1] eq 'a') {
2171: if ($token->[2]->{'href'}) {
2172: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2173: }
2174: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2175: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2176: } elsif ($token->[1] eq 'base') {
2177: $thisdir=$token->[2]->{'href'};
2178: }
2179: }
2180: }
2181: $thisdir=~s-/[^/]*$--;
2182: foreach (@rlinks) {
2183: unless (($_=~/^http:\/\//i) ||
2184: ($_=~/^\//) ||
2185: ($_=~/^javascript:/i) ||
2186: ($_=~/^mailto:/i) ||
2187: ($_=~/^\#/)) {
2188: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2189: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2190: }
2191: }
2192: # -------------------------------------------------- Deal with Applet codebases
2193: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2194: return $output;
2195: }
2196:
2197: =pod
2198:
2199: =item * get_student_view
2200:
2201: show a snapshot of what student was looking at
2202:
2203: =cut
2204:
2205: sub get_student_view {
2206: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2207: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2208: my (%form);
2209: my @elements=('symb','courseid','domain','username');
2210: foreach my $element (@elements) {
2211: $form{'grade_'.$element}=eval '$'.$element #'
2212: }
2213: if (defined($moreenv)) {
2214: %form=(%form,%{$moreenv});
2215: }
2216: if ($target eq 'tex') {$form{'grade_target'} = 'tex';}
2217: $feedurl=&Apache::lonnet::clutter($feedurl);
2218: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2219: $userview=~s/\<body[^\>]*\>//gi;
2220: $userview=~s/\<\/body\>//gi;
2221: $userview=~s/\<html\>//gi;
2222: $userview=~s/\<\/html\>//gi;
2223: $userview=~s/\<head\>//gi;
2224: $userview=~s/\<\/head\>//gi;
2225: $userview=~s/action\s*\=/would_be_action\=/gi;
2226: $userview=&relative_to_absolute($feedurl,$userview);
2227: return $userview;
2228: }
2229:
2230: =pod
2231:
2232: =item * get_student_answers()
2233:
2234: show a snapshot of how student was answering problem
2235:
2236: =cut
2237:
2238: sub get_student_answers {
2239: my ($symb,$username,$domain,$courseid,%form) = @_;
2240: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2241: my (%moreenv);
2242: my @elements=('symb','courseid','domain','username');
2243: foreach my $element (@elements) {
2244: $moreenv{'grade_'.$element}=eval '$'.$element #'
2245: }
2246: $moreenv{'grade_target'}='answer';
2247: %moreenv=(%form,%moreenv);
2248: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2249: return $userview;
2250: }
2251:
2252: =pod
2253:
2254: =item * &submlink()
2255:
2256: Inputs: $text $uname $udom $symb
2257:
2258: Returns: A link to grades.pm such as to see the SUBM view of a student
2259:
2260: =cut
2261:
2262: ###############################################
2263: sub submlink {
2264: my ($text,$uname,$udom,$symb)=@_;
2265: if (!($uname && $udom)) {
2266: (my $cursymb, my $courseid,$udom,$uname)=
2267: &Apache::lonxml::whichuser($symb);
2268: if (!$symb) { $symb=$cursymb; }
2269: }
2270: if (!$symb) { $symb=&symbread(); }
2271: return '<a href="/adm/grades?symb='.$symb.'&student='.$uname.
2272: '&userdom='.$udom.'&command=submission">'.$text.'</a>';
2273: }
2274: ##############################################
2275:
2276: =pod
2277:
2278: =back
2279:
2280: =cut
2281:
2282: ###############################################
2283:
2284:
2285: sub timehash {
2286: my @ltime=localtime(shift);
2287: return ( 'seconds' => $ltime[0],
2288: 'minutes' => $ltime[1],
2289: 'hours' => $ltime[2],
2290: 'day' => $ltime[3],
2291: 'month' => $ltime[4]+1,
2292: 'year' => $ltime[5]+1900,
2293: 'weekday' => $ltime[6],
2294: 'dayyear' => $ltime[7]+1,
2295: 'dlsav' => $ltime[8] );
2296: }
2297:
2298: sub maketime {
2299: my %th=@_;
2300: return POSIX::mktime(
2301: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2302: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
2303: }
2304:
2305: #########################################
2306:
2307: sub findallcourses {
2308: my %courses=();
2309: my $now=time;
2310: foreach (keys %ENV) {
2311: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2312: my ($starttime,$endtime)=$ENV{$_};
2313: my $active=1;
2314: if ($starttime) {
2315: if ($now<$starttime) { $active=0; }
2316: }
2317: if ($endtime) {
2318: if ($now>$endtime) { $active=0; }
2319: }
2320: if ($active) { $courses{$1.'_'.$2}=1; }
2321: }
2322: }
2323: return keys %courses;
2324: }
2325:
2326: ###############################################
2327: ###############################################
2328:
2329: =pod
2330:
2331: =head1 Domain Template Functions
2332:
2333: =over 4
2334:
2335: =item * &determinedomain()
2336:
2337: Inputs: $domain (usually will be undef)
2338:
2339: Returns: Determines which domain should be used for designs
2340:
2341: =cut
2342:
2343: ###############################################
2344: sub determinedomain {
2345: my $domain=shift;
2346: if (! $domain) {
2347: # Determine domain if we have not been given one
2348: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2349: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
2350: if ($ENV{'request.role.domain'}) {
2351: $domain=$ENV{'request.role.domain'};
2352: }
2353: }
2354: return $domain;
2355: }
2356: ###############################################
2357: =pod
2358:
2359: =item * &domainlogo()
2360:
2361: Inputs: $domain (usually will be undef)
2362:
2363: Returns: A link to a domain logo, if the domain logo exists.
2364: If the domain logo does not exist, a description of the domain.
2365:
2366: =cut
2367:
2368: ###############################################
2369: sub domainlogo {
2370: my $domain = &determinedomain(shift);
2371: # See if there is a logo
2372: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2373: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2374: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2375: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
2376: '/adm/lonDomLogos/'.$domain.'.gif" alt="'.$domain.'" />';
2377: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2378: return $Apache::lonnet::domaindescription{$domain};
2379: } else {
2380: return '';
2381: }
2382: }
2383: ##############################################
2384:
2385: =pod
2386:
2387: =item * &designparm()
2388:
2389: Inputs: $which parameter; $domain (usually will be undef)
2390:
2391: Returns: value of designparamter $which
2392:
2393: =cut
2394:
2395: ##############################################
2396: sub designparm {
2397: my ($which,$domain)=@_;
2398: if ($ENV{'browser.blackwhite'} eq 'on') {
2399: if ($which=~/\.(font|alink|vlink|link)$/) {
2400: return '#000000';
2401: }
2402: if ($which=~/\.(pgbg|sidebg)$/) {
2403: return '#FFFFFF';
2404: }
2405: if ($which=~/\.tabbg$/) {
2406: return '#CCCCCC';
2407: }
2408: }
2409: if ($ENV{'environment.color.'.$which}) {
2410: return $ENV{'environment.color.'.$which};
2411: }
2412: $domain=&determinedomain($domain);
2413: if ($designhash{$domain.'.'.$which}) {
2414: return $designhash{$domain.'.'.$which};
2415: } else {
2416: return $designhash{'default.'.$which};
2417: }
2418: }
2419:
2420: ###############################################
2421: ###############################################
2422:
2423: =pod
2424:
2425: =back
2426:
2427: =head1 HTTP Helpers
2428:
2429: =over 4
2430:
2431: =item * &bodytag()
2432:
2433: Returns a uniform header for LON-CAPA web pages.
2434:
2435: Inputs:
2436:
2437: =over 4
2438:
2439: =item * $title, A title to be displayed on the page.
2440:
2441: =item * $function, the current role (can be undef).
2442:
2443: =item * $addentries, extra parameters for the <body> tag.
2444:
2445: =item * $bodyonly, if defined, only return the <body> tag.
2446:
2447: =item * $domain, if defined, force a given domain.
2448:
2449: =item * $forcereg, if page should register as content page (relevant for
2450: text interface only)
2451:
2452: =back
2453:
2454: Returns: A uniform header for LON-CAPA web pages.
2455: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2456: If $bodyonly is undef or zero, an html string containing a <body> tag and
2457: other decorations will be returned.
2458:
2459: =cut
2460:
2461: sub bodytag {
2462: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
2463: $title=&mt($title);
2464: $function = &get_users_function() if (!$function);
2465: my $img=&designparm($function.'.img',$domain);
2466: my $pgbg=&designparm($function.'.pgbg',$domain);
2467: my $tabbg=&designparm($function.'.tabbg',$domain);
2468: my $font=&designparm($function.'.font',$domain);
2469: my $link=&designparm($function.'.link',$domain);
2470: my $alink=&designparm($function.'.alink',$domain);
2471: my $vlink=&designparm($function.'.vlink',$domain);
2472: my $sidebg=&designparm($function.'.sidebg',$domain);
2473: # Accessibility font enhance
2474: unless ($addentries) { $addentries=''; }
2475: my $addstyle='';
2476: if ($ENV{'browser.fontenhance'} eq 'on') {
2477: $addstyle=' font-size: x-large;';
2478: }
2479: # role and realm
2480: my ($role,$realm)
2481: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
2482: # realm
2483: if ($ENV{'request.course.id'}) {
2484: $realm=
2485: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
2486: }
2487: unless ($realm) { $realm=' '; }
2488: # Set messages
2489: my $messages=&domainlogo($domain);
2490: # Port for miniserver
2491: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2492: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2493: # construct main body tag
2494: my $bodytag = <<END;
2495: <style>
2496: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2497: a:focus { color: red; background: yellow }
2498: </style>
2499: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2500: style="margin-top: 0px;$addstyle" $addentries>
2501: END
2502: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2503: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2504: if ($bodyonly) {
2505: return $bodytag;
2506: } elsif ($ENV{'browser.interface'} eq 'textual') {
2507: # Accessibility
2508: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2509: $forcereg).
2510: '<h1>LON-CAPA: '.$title.'</h1>';
2511: } elsif ($ENV{'environment.remote'} eq 'off') {
2512: # No Remote
2513: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2514: $forcereg).
2515: '<table bgcolor="'.$pgbg.'" width="100%" border="0" cellspacing="3" cellpadding="3"><tr><td bgcolor="'.$tabbg.'"><font face="Arial, Helvetica, sans-serif" size="+3" color="'.$font.'"><b>'.$title.
2516: '</b></font></td></tr></table>';
2517: }
2518:
2519: #
2520: # Top frame rendering, Remote is up
2521: #
2522: return(<<ENDBODY);
2523: $bodytag
2524: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2525: <tr><td bgcolor="$sidebg">
2526: $upperleft</td>
2527: <td bgcolor="$sidebg" align="right">$messages </td>
2528: </tr>
2529: <tr>
2530: <td rowspan="3" bgcolor="$tabbg">
2531: <font size="5" face="Arial, Helvetica, sans-serif"><b>$title</b></font>
2532: <td bgcolor="$tabbg" align="right">
2533: <font size="2" face="Arial, Helvetica, sans-serif">
2534: $ENV{'environment.firstname'}
2535: $ENV{'environment.middlename'}
2536: $ENV{'environment.lastname'}
2537: $ENV{'environment.generation'}
2538: </font>
2539: </td>
2540: </tr>
2541: <tr><td bgcolor="$tabbg" align="right">
2542: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2543: </td></tr>
2544: <tr>
2545: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2546: </table><br>
2547: ENDBODY
2548: }
2549:
2550: ###############################################
2551:
2552: =pod
2553:
2554: =item get_users_function
2555:
2556: Used by &bodytag to determine the current users primary role.
2557: Returns either 'student','coordinator','admin', or 'author'.
2558:
2559: =cut
2560:
2561: ###############################################
2562: sub get_users_function {
2563: my $function = 'student';
2564: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
2565: $function='coordinator';
2566: }
2567: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
2568: $function='admin';
2569: }
2570: if (($ENV{'request.role'}=~/^(au|ca)/) ||
2571: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2572: $function='author';
2573: }
2574: return $function;
2575: }
2576:
2577: ###############################################
2578:
2579: sub get_posted_cgi {
2580: my $r=shift;
2581:
2582: my $buffer;
2583:
2584: $r->read($buffer,$r->header_in('Content-length'),0);
2585: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2586: my @pairs=split(/&/,$buffer);
2587: my $pair;
2588: foreach $pair (@pairs) {
2589: my ($name,$value) = split(/=/,$pair);
2590: $value =~ tr/+/ /;
2591: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2592: $name =~ tr/+/ /;
2593: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2594: &add_to_env("form.$name",$value);
2595: }
2596: } else {
2597: my $contentsep=$1;
2598: my @lines = split (/\n/,$buffer);
2599: my $name='';
2600: my $value='';
2601: my $fname='';
2602: my $fmime='';
2603: my $i;
2604: for ($i=0;$i<=$#lines;$i++) {
2605: if ($lines[$i]=~/^$contentsep/) {
2606: if ($name) {
2607: chomp($value);
2608: if ($fname) {
2609: $ENV{"form.$name.filename"}=$fname;
2610: $ENV{"form.$name.mimetype"}=$fmime;
2611: } else {
2612: $value=~s/\s+$//s;
2613: }
2614: &add_to_env("form.$name",$value);
2615: }
2616: if ($i<$#lines) {
2617: $i++;
2618: $lines[$i]=~
2619: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
2620: $name=$1;
2621: $value='';
2622: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
2623: $fname=$1;
2624: if
2625: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
2626: $fmime=$1;
2627: $i++;
2628: } else {
2629: $fmime='';
2630: }
2631: } else {
2632: $fname='';
2633: $fmime='';
2634: }
2635: $i++;
2636: }
2637: } else {
2638: $value.=$lines[$i]."\n";
2639: }
2640: }
2641: }
2642: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
2643: $r->method_number(M_GET);
2644: $r->method('GET');
2645: $r->headers_in->unset('Content-length');
2646: }
2647:
2648: =pod
2649:
2650: =item * get_unprocessed_cgi($query,$possible_names)
2651:
2652: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2653: $query. The parameters listed in $possible_names (an array reference),
2654: will be set in $ENV{'form.name'} if they do not already exist.
2655:
2656: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2657: $possible_names is an ref to an array of form element names. As an example:
2658: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2659: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
2660:
2661: =cut
2662:
2663: sub get_unprocessed_cgi {
2664: my ($query,$possible_names)= @_;
2665: # $Apache::lonxml::debug=1;
2666: foreach (split(/&/,$query)) {
2667: my ($name, $value) = split(/=/,$_);
2668: $name = &Apache::lonnet::unescape($name);
2669: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
2670: $value =~ tr/+/ /;
2671: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2672: &Apache::lonxml::debug("Seting :$name: to :$value:");
2673: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
2674: }
2675: }
2676: }
2677:
2678: =pod
2679:
2680: =item * cacheheader()
2681:
2682: returns cache-controlling header code
2683:
2684: =cut
2685:
2686: sub cacheheader {
2687: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2688: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2689: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
2690: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
2691: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
2692: return $output;
2693: }
2694:
2695: =pod
2696:
2697: =item * no_cache($r)
2698:
2699: specifies header code to not have cache
2700:
2701: =cut
2702:
2703: sub no_cache {
2704: my ($r) = @_;
2705: unless ($ENV{'request.method'} eq 'GET') { return ''; }
2706: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
2707: $r->no_cache(1);
2708: $r->header_out("Pragma" => "no-cache");
2709: #$r->header_out("Expires" => $date);
2710: }
2711:
2712: sub content_type {
2713: my ($r,$type,$charset) = @_;
2714: unless ($charset) {
2715: $charset=&Apache::lonlocal::current_encoding;
2716: }
2717: if ($charset) { $type.='; charset='.$charset; }
2718: if ($r) {
2719: $r->content_type($type);
2720: } else {
2721: print("Content-type: $type\n\n");
2722: }
2723: }
2724:
2725: =pod
2726:
2727: =item * add_to_env($name,$value)
2728:
2729: adds $name to the %ENV hash with value
2730: $value, if $name already exists, the entry is converted to an array
2731: reference and $value is added to the array.
2732:
2733: =cut
2734:
2735: sub add_to_env {
2736: my ($name,$value)=@_;
2737: if (defined($ENV{$name})) {
2738: if (ref($ENV{$name})) {
2739: #already have multiple values
2740: push(@{ $ENV{$name} },$value);
2741: } else {
2742: #first time seeing multiple values, convert hash entry to an arrayref
2743: my $first=$ENV{$name};
2744: undef($ENV{$name});
2745: push(@{ $ENV{$name} },$first,$value);
2746: }
2747: } else {
2748: $ENV{$name}=$value;
2749: }
2750: }
2751:
2752: =pod
2753:
2754: =item * get_env_multiple($name)
2755:
2756: gets $name from the %ENV hash, it seemlessly handles the cases where multiple
2757: values may be defined and end up as an array ref.
2758:
2759: returns an array of values
2760:
2761: =cut
2762:
2763: sub get_env_multiple {
2764: my ($name) = @_;
2765: my @values;
2766: if (defined($ENV{$name})) {
2767: # exists is it an array
2768: if (ref($ENV{$name})) {
2769: @values=@{ $ENV{$name} };
2770: } else {
2771: $values[0]=$ENV{$name};
2772: }
2773: }
2774: return(@values);
2775: }
2776:
2777:
2778: =pod
2779:
2780: =back
2781:
2782: =head1 CSV Upload/Handling functions
2783:
2784: =over 4
2785:
2786: =item * upfile_store($r)
2787:
2788: Store uploaded file, $r should be the HTTP Request object,
2789: needs $ENV{'form.upfile'}
2790: returns $datatoken to be put into hidden field
2791:
2792: =cut
2793:
2794: sub upfile_store {
2795: my $r=shift;
2796: $ENV{'form.upfile'}=~s/\r/\n/gs;
2797: $ENV{'form.upfile'}=~s/\f/\n/gs;
2798: $ENV{'form.upfile'}=~s/\n+/\n/gs;
2799: $ENV{'form.upfile'}=~s/\n+$//gs;
2800:
2801: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
2802: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
2803: {
2804: my $datafile = $r->dir_config('lonDaemons').
2805: '/tmp/'.$datatoken.'.tmp';
2806: if ( open(my $fh,">$datafile") ) {
2807: print $fh $ENV{'form.upfile'};
2808: close($fh);
2809: }
2810: }
2811: return $datatoken;
2812: }
2813:
2814: =pod
2815:
2816: =item * load_tmp_file($r)
2817:
2818: Load uploaded file from tmp, $r should be the HTTP Request object,
2819: needs $ENV{'form.datatoken'},
2820: sets $ENV{'form.upfile'} to the contents of the file
2821:
2822: =cut
2823:
2824: sub load_tmp_file {
2825: my $r=shift;
2826: my @studentdata=();
2827: {
2828: my $studentfile = $r->dir_config('lonDaemons').
2829: '/tmp/'.$ENV{'form.datatoken'}.'.tmp';
2830: if ( open(my $fh,"<$studentfile") ) {
2831: @studentdata=<$fh>;
2832: close($fh);
2833: }
2834: }
2835: $ENV{'form.upfile'}=join('',@studentdata);
2836: }
2837:
2838: =pod
2839:
2840: =item * upfile_record_sep()
2841:
2842: Separate uploaded file into records
2843: returns array of records,
2844: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
2845:
2846: =cut
2847:
2848: sub upfile_record_sep {
2849: if ($ENV{'form.upfiletype'} eq 'xml') {
2850: } else {
2851: return split(/\n/,$ENV{'form.upfile'});
2852: }
2853: }
2854:
2855: =pod
2856:
2857: =item * record_sep($record)
2858:
2859: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
2860:
2861: =cut
2862:
2863: sub record_sep {
2864: my $record=shift;
2865: my %components=();
2866: if ($ENV{'form.upfiletype'} eq 'xml') {
2867: } elsif ($ENV{'form.upfiletype'} eq 'space') {
2868: my $i=0;
2869: foreach (split(/\s+/,$record)) {
2870: my $field=$_;
2871: $field=~s/^(\"|\')//;
2872: $field=~s/(\"|\')$//;
2873: $components{$i}=$field;
2874: $i++;
2875: }
2876: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2877: my $i=0;
2878: foreach (split(/\t/,$record)) {
2879: my $field=$_;
2880: $field=~s/^(\"|\')//;
2881: $field=~s/(\"|\')$//;
2882: $components{$i}=$field;
2883: $i++;
2884: }
2885: } else {
2886: my @allfields=split(/\,/,$record);
2887: my $i=0;
2888: my $j;
2889: for ($j=0;$j<=$#allfields;$j++) {
2890: my $field=$allfields[$j];
2891: if ($field=~/^\s*(\"|\')/) {
2892: my $delimiter=$1;
2893: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2894: $j++;
2895: $field.=','.$allfields[$j];
2896: }
2897: $field=~s/^\s*$delimiter//;
2898: $field=~s/$delimiter\s*$//;
2899: }
2900: $components{$i}=$field;
2901: $i++;
2902: }
2903: }
2904: return %components;
2905: }
2906:
2907: ######################################################
2908: ######################################################
2909:
2910: =pod
2911:
2912: =item * upfile_select_html()
2913:
2914: Return HTML code to select a file from the users machine and specify
2915: the file type.
2916:
2917: =cut
2918:
2919: ######################################################
2920: ######################################################
2921: sub upfile_select_html {
2922: my %Types = (
2923: csv => &mt('CSV (comma separated values, spreadsheet)'),
2924: space => &mt('Space separated'),
2925: tab => &mt('Tabulator separated'),
2926: # xml => &mt('HTML/XML'),
2927: );
2928: my $Str = '<input type="file" name="upfile" size="50" />'.
2929: '<br />Type: <select name="upfiletype">';
2930: foreach my $type (sort(keys(%Types))) {
2931: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
2932: }
2933: $Str .= "</select>\n";
2934: return $Str;
2935: }
2936:
2937: ######################################################
2938: ######################################################
2939:
2940: =pod
2941:
2942: =item * csv_print_samples($r,$records)
2943:
2944: Prints a table of sample values from each column uploaded $r is an
2945: Apache Request ref, $records is an arrayref from
2946: &Apache::loncommon::upfile_record_sep
2947:
2948: =cut
2949:
2950: ######################################################
2951: ######################################################
2952: sub csv_print_samples {
2953: my ($r,$records) = @_;
2954: my (%sone,%stwo,%sthree);
2955: %sone=&record_sep($$records[0]);
2956: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2957: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2958: #
2959: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
2960: foreach (sort({$a <=> $b} keys(%sone))) {
2961: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
2962: $r->print('</tr>');
2963: foreach my $hash (\%sone,\%stwo,\%sthree) {
2964: $r->print('<tr>');
2965: foreach (sort({$a <=> $b} keys(%sone))) {
2966: $r->print('<td>');
2967: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
2968: $r->print('</td>');
2969: }
2970: $r->print('</tr>');
2971: }
2972: $r->print('</tr></table><br />'."\n");
2973: }
2974:
2975: ######################################################
2976: ######################################################
2977:
2978: =pod
2979:
2980: =item * csv_print_select_table($r,$records,$d)
2981:
2982: Prints a table to create associations between values and table columns.
2983:
2984: $r is an Apache Request ref,
2985: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2986: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
2987:
2988: =cut
2989:
2990: ######################################################
2991: ######################################################
2992: sub csv_print_select_table {
2993: my ($r,$records,$d) = @_;
2994: my $i=0;my %sone;
2995: %sone=&record_sep($$records[0]);
2996: $r->print(&mt('Associate columns with student attributes.')."\n".
2997: '<table border="2"><tr>'.
2998: '<th>'.&mt('Attribute').'</th>'.
2999: '<th>'.&mt('Column').'</th></tr>'."\n");
3000: foreach (@$d) {
3001: my ($value,$display,$defaultcol)=@{ $_ };
3002: $r->print('<tr><td>'.$display.'</td>');
3003:
3004: $r->print('<td><select name=f'.$i.
3005: ' onchange="javascript:flip(this.form,'.$i.');">');
3006: $r->print('<option value="none"></option>');
3007: foreach (sort({$a <=> $b} keys(%sone))) {
3008: $r->print('<option value="'.$_.'"'.
3009: ($_ eq $defaultcol ? ' selected ' : '').
3010: '>Column '.($_+1).'</option>');
3011: }
3012: $r->print('</select></td></tr>'."\n");
3013: $i++;
3014: }
3015: $i--;
3016: return $i;
3017: }
3018:
3019: ######################################################
3020: ######################################################
3021:
3022: =pod
3023:
3024: =item * csv_samples_select_table($r,$records,$d)
3025:
3026: Prints a table of sample values from the upload and can make associate samples to internal names.
3027:
3028: $r is an Apache Request ref,
3029: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3030: $d is an array of 2 element arrays (internal name, displayed name)
3031:
3032: =cut
3033:
3034: ######################################################
3035: ######################################################
3036: sub csv_samples_select_table {
3037: my ($r,$records,$d) = @_;
3038: my %sone; my %stwo; my %sthree;
3039: my $i=0;
3040: #
3041: $r->print('<table border=2><tr><th>'.
3042: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3043: %sone=&record_sep($$records[0]);
3044: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3045: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3046: #
3047: foreach (sort keys %sone) {
3048: $r->print('<tr><td><select name="f'.$i.'"'.
3049: ' onchange="javascript:flip(this.form,'.$i.');">');
3050: foreach (@$d) {
3051: my ($value,$display,$defaultcol)=@{ $_ };
3052: $r->print('<option value="'.$value.'"'.
3053: ($i eq $defaultcol ? ' selected ':'').'>'.
3054: $display.'</option>');
3055: }
3056: $r->print('</select></td><td>');
3057: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3058: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3059: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3060: $r->print('</td></tr>');
3061: $i++;
3062: }
3063: $i--;
3064: return($i);
3065: }
3066:
3067: ######################################################
3068: ######################################################
3069:
3070: =pod
3071:
3072: =item clean_excel_name($name)
3073:
3074: Returns a replacement for $name which does not contain any illegal characters.
3075:
3076: =cut
3077:
3078: ######################################################
3079: ######################################################
3080: sub clean_excel_name {
3081: my ($name) = @_;
3082: $name =~ s/[:\*\?\/\\]//g;
3083: if (length($name) > 31) {
3084: $name = substr($name,0,31);
3085: }
3086: return $name;
3087: }
3088:
3089: =pod
3090:
3091: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3092:
3093: Returns either 1 or undef
3094:
3095: 1 if the part is to be hidden, undef if it is to be shown
3096:
3097: Arguments are:
3098:
3099: $id the id of the part to be checked
3100: $symb, optional the symb of the resource to check
3101: $udom, optional the domain of the user to check for
3102: $uname, optional the username of the user to check for
3103:
3104: =cut
3105:
3106: sub check_if_partid_hidden {
3107: my ($id,$symb,$udom,$uname) = @_;
3108: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3109: $symb,$udom,$uname);
3110: my $truth=1;
3111: #if the string starts with !, then the list is the list to show not hide
3112: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3113: my @hiddenlist=split(/,/,$hiddenparts);
3114: foreach my $checkid (@hiddenlist) {
3115: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3116: }
3117: return !$truth;
3118: }
3119:
3120:
3121: ############################################################
3122: ############################################################
3123:
3124: =pod
3125:
3126: =back
3127:
3128: =head1 cgi-bin script and graphing routines
3129:
3130: =over 4
3131:
3132: =item get_cgi_id
3133:
3134: Inputs: none
3135:
3136: Returns an id which can be used to pass environment variables
3137: to various cgi-bin scripts. These environment variables will
3138: be removed from the users environment after a given time by
3139: the routine &Apache::lonnet::transfer_profile_to_env.
3140:
3141: =cut
3142:
3143: ############################################################
3144: ############################################################
3145: my $uniq=0;
3146: sub get_cgi_id {
3147: $uniq=($uniq+1)%100000;
3148: return (time.'_'.$uniq);
3149: }
3150:
3151: ############################################################
3152: ############################################################
3153:
3154: =pod
3155:
3156: =item DrawBarGraph
3157:
3158: Facilitates the plotting of data in a (stacked) bar graph.
3159: Puts plot definition data into the users environment in order for
3160: graph.png to plot it. Returns an <img> tag for the plot.
3161: The bars on the plot are labeled '1','2',...,'n'.
3162:
3163: Inputs:
3164:
3165: =over 4
3166:
3167: =item $Title: string, the title of the plot
3168:
3169: =item $xlabel: string, text describing the X-axis of the plot
3170:
3171: =item $ylabel: string, text describing the Y-axis of the plot
3172:
3173: =item $Max: scalar, the maximum Y value to use in the plot
3174: If $Max is < any data point, the graph will not be rendered.
3175:
3176: =item $colors: array ref holding the colors to be used for the data sets when
3177: they are plotted. If undefined, default values will be used.
3178:
3179: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3180:
3181: =item @Values: An array of array references. Each array reference holds data
3182: to be plotted in a stacked bar chart.
3183:
3184: =back
3185:
3186: Returns:
3187:
3188: An <img> tag which references graph.png and the appropriate identifying
3189: information for the plot.
3190:
3191: =cut
3192:
3193: ############################################################
3194: ############################################################
3195: sub DrawBarGraph {
3196: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3197: #
3198: if (! defined($colors)) {
3199: $colors = ['#33ff00',
3200: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3201: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3202: ];
3203: }
3204: #
3205: my $identifier = &get_cgi_id();
3206: my $id = 'cgi.'.$identifier;
3207: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3208: return '';
3209: }
3210: my $NumBars = scalar(@{$Values[0]});
3211: my %ValuesHash;
3212: my $NumSets=1;
3213: foreach my $array (@Values) {
3214: next if (! ref($array));
3215: $ValuesHash{$id.'.data.'.$NumSets++} =
3216: join(',',@$array);
3217: }
3218: #
3219: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3220: if ($NumBars < 10) {
3221: $width = 120+$NumBars*15;
3222: $xskip = 1;
3223: $bar_width = 15;
3224: } elsif ($NumBars <= 25) {
3225: $width = 120+$NumBars*11;
3226: $xskip = 5;
3227: $bar_width = 8;
3228: } elsif ($NumBars <= 50) {
3229: $width = 120+$NumBars*8;
3230: $xskip = 5;
3231: $bar_width = 4;
3232: } else {
3233: $width = 120+$NumBars*8;
3234: $xskip = 5;
3235: $bar_width = 4;
3236: }
3237: #
3238: my @Labels;
3239: if (defined($labels)) {
3240: @Labels = @$labels;
3241: } else {
3242: for (my $i=0;$i<@{$Values[0]};$i++) {
3243: push (@Labels,$i+1);
3244: }
3245: }
3246: #
3247: $Max = 1 if ($Max < 1);
3248: if ( int($Max) < $Max ) {
3249: $Max++;
3250: $Max = int($Max);
3251: }
3252: $Title = '' if (! defined($Title));
3253: $xlabel = '' if (! defined($xlabel));
3254: $ylabel = '' if (! defined($ylabel));
3255: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3256: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3257: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3258: $ValuesHash{$id.'.y_max_value'} = $Max;
3259: $ValuesHash{$id.'.NumBars'} = $NumBars;
3260: $ValuesHash{$id.'.NumSets'} = $NumSets;
3261: $ValuesHash{$id.'.PlotType'} = 'bar';
3262: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3263: $ValuesHash{$id.'.height'} = $height;
3264: $ValuesHash{$id.'.width'} = $width;
3265: $ValuesHash{$id.'.xskip'} = $xskip;
3266: $ValuesHash{$id.'.bar_width'} = $bar_width;
3267: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3268: #
3269: &Apache::lonnet::appenv(%ValuesHash);
3270: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3271: }
3272:
3273: ############################################################
3274: ############################################################
3275:
3276: =pod
3277:
3278: =item DrawXYGraph
3279:
3280: Facilitates the plotting of data in an XY graph.
3281: Puts plot definition data into the users environment in order for
3282: graph.png to plot it. Returns an <img> tag for the plot.
3283:
3284: Inputs:
3285:
3286: =over 4
3287:
3288: =item $Title: string, the title of the plot
3289:
3290: =item $xlabel: string, text describing the X-axis of the plot
3291:
3292: =item $ylabel: string, text describing the Y-axis of the plot
3293:
3294: =item $Max: scalar, the maximum Y value to use in the plot
3295: If $Max is < any data point, the graph will not be rendered.
3296:
3297: =item $colors: Array ref containing the hex color codes for the data to be
3298: plotted in. If undefined, default values will be used.
3299:
3300: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3301:
3302: =item $Ydata: Array ref containing Array refs.
3303: Each of the contained arrays will be plotted as a separate curve.
3304:
3305: =item %Values: hash indicating or overriding any default values which are
3306: passed to graph.png.
3307: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3308:
3309: =back
3310:
3311: Returns:
3312:
3313: An <img> tag which references graph.png and the appropriate identifying
3314: information for the plot.
3315:
3316: =cut
3317:
3318: ############################################################
3319: ############################################################
3320: sub DrawXYGraph {
3321: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3322: #
3323: # Create the identifier for the graph
3324: my $identifier = &get_cgi_id();
3325: my $id = 'cgi.'.$identifier;
3326: #
3327: $Title = '' if (! defined($Title));
3328: $xlabel = '' if (! defined($xlabel));
3329: $ylabel = '' if (! defined($ylabel));
3330: my %ValuesHash =
3331: (
3332: $id.'.title' => &Apache::lonnet::escape($Title),
3333: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3334: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3335: $id.'.y_max_value'=> $Max,
3336: $id.'.labels' => join(',',@$Xlabels),
3337: $id.'.PlotType' => 'XY',
3338: );
3339: #
3340: if (defined($colors) && ref($colors) eq 'ARRAY') {
3341: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3342: }
3343: #
3344: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3345: return '';
3346: }
3347: my $NumSets=1;
3348: foreach my $array (@{$Ydata}){
3349: next if (! ref($array));
3350: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3351: }
3352: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3353: #
3354: # Deal with other parameters
3355: while (my ($key,$value) = each(%Values)) {
3356: $ValuesHash{$id.'.'.$key} = $value;
3357: }
3358: #
3359: &Apache::lonnet::appenv(%ValuesHash);
3360: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3361: }
3362:
3363: ############################################################
3364: ############################################################
3365:
3366: =pod
3367:
3368: =item DrawXYYGraph
3369:
3370: Facilitates the plotting of data in an XY graph with two Y axes.
3371: Puts plot definition data into the users environment in order for
3372: graph.png to plot it. Returns an <img> tag for the plot.
3373:
3374: Inputs:
3375:
3376: =over 4
3377:
3378: =item $Title: string, the title of the plot
3379:
3380: =item $xlabel: string, text describing the X-axis of the plot
3381:
3382: =item $ylabel: string, text describing the Y-axis of the plot
3383:
3384: =item $colors: Array ref containing the hex color codes for the data to be
3385: plotted in. If undefined, default values will be used.
3386:
3387: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3388:
3389: =item $Ydata1: The first data set
3390:
3391: =item $Min1: The minimum value of the left Y-axis
3392:
3393: =item $Max1: The maximum value of the left Y-axis
3394:
3395: =item $Ydata2: The second data set
3396:
3397: =item $Min2: The minimum value of the right Y-axis
3398:
3399: =item $Max2: The maximum value of the left Y-axis
3400:
3401: =item %Values: hash indicating or overriding any default values which are
3402: passed to graph.png.
3403: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3404:
3405: =back
3406:
3407: Returns:
3408:
3409: An <img> tag which references graph.png and the appropriate identifying
3410: information for the plot.
3411:
3412: =cut
3413:
3414: ############################################################
3415: ############################################################
3416: sub DrawXYYGraph {
3417: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3418: $Ydata2,$Min2,$Max2,%Values)=@_;
3419: #
3420: # Create the identifier for the graph
3421: my $identifier = &get_cgi_id();
3422: my $id = 'cgi.'.$identifier;
3423: #
3424: $Title = '' if (! defined($Title));
3425: $xlabel = '' if (! defined($xlabel));
3426: $ylabel = '' if (! defined($ylabel));
3427: my %ValuesHash =
3428: (
3429: $id.'.title' => &Apache::lonnet::escape($Title),
3430: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3431: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3432: $id.'.labels' => join(',',@$Xlabels),
3433: $id.'.PlotType' => 'XY',
3434: $id.'.NumSets' => 2,
3435: $id.'.two_axes' => 1,
3436: $id.'.y1_max_value' => $Max1,
3437: $id.'.y1_min_value' => $Min1,
3438: $id.'.y2_max_value' => $Max2,
3439: $id.'.y2_min_value' => $Min2,
3440: );
3441: #
3442: if (defined($colors) && ref($colors) eq 'ARRAY') {
3443: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3444: }
3445: #
3446: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3447: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3448: return '';
3449: }
3450: my $NumSets=1;
3451: foreach my $array ($Ydata1,$Ydata2){
3452: next if (! ref($array));
3453: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3454: }
3455: #
3456: # Deal with other parameters
3457: while (my ($key,$value) = each(%Values)) {
3458: $ValuesHash{$id.'.'.$key} = $value;
3459: }
3460: #
3461: &Apache::lonnet::appenv(%ValuesHash);
3462: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3463: }
3464:
3465: ############################################################
3466: ############################################################
3467:
3468: =pod
3469:
3470: =back
3471:
3472: =head1 Statistics helper routines?
3473:
3474: Bad place for them but what the hell.
3475:
3476: =over 4
3477:
3478: =item &chartlink
3479:
3480: Returns a link to the chart for a specific student.
3481:
3482: Inputs:
3483:
3484: =over 4
3485:
3486: =item $linktext: The text of the link
3487:
3488: =item $sname: The students username
3489:
3490: =item $sdomain: The students domain
3491:
3492: =back
3493:
3494: =back
3495:
3496: =cut
3497:
3498: ############################################################
3499: ############################################################
3500: sub chartlink {
3501: my ($linktext, $sname, $sdomain) = @_;
3502: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3503: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3504: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3505: '">'.$linktext.'</a>';
3506: }
3507:
3508: #######################################################
3509: #######################################################
3510:
3511: =pod
3512:
3513: =head1 Course Environment Routines
3514:
3515: =over 4
3516:
3517: =item &restore_course_settings
3518:
3519: =item &store_course_settings
3520:
3521: Restores/Store indicated form parameters from the course environment.
3522: Will not overwrite existing values of the form parameters.
3523:
3524: Inputs:
3525: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3526:
3527: a hash ref describing the data to be stored. For example:
3528:
3529: %Save_Parameters = ('Status' => 'scalar',
3530: 'chartoutputmode' => 'scalar',
3531: 'chartoutputdata' => 'scalar',
3532: 'Section' => 'array',
3533: 'StudentData' => 'array',
3534: 'Maps' => 'array');
3535:
3536: Returns: both routines return nothing
3537:
3538: =cut
3539:
3540: #######################################################
3541: #######################################################
3542: sub store_course_settings {
3543: # save to the environment
3544: # appenv the same items, just to be safe
3545: my $courseid = $ENV{'request.course.id'};
3546: my $coursedom = $ENV{'course.'.$courseid.'.domain'};
3547: my ($prefix,$Settings) = @_;
3548: my %SaveHash;
3549: my %AppHash;
3550: while (my ($setting,$type) = each(%$Settings)) {
3551: my $basename = 'internal.'.$prefix.'.'.$setting;
3552: my $envname = 'course.'.$courseid.'.'.$basename;
3553: if (exists($ENV{'form.'.$setting})) {
3554: # Save this value away
3555: if ($type eq 'scalar' &&
3556: (! exists($ENV{$envname}) ||
3557: $ENV{$envname} ne $ENV{'form.'.$setting})) {
3558: $SaveHash{$basename} = $ENV{'form.'.$setting};
3559: $AppHash{$envname} = $ENV{'form.'.$setting};
3560: } elsif ($type eq 'array') {
3561: my $stored_form;
3562: if (ref($ENV{'form.'.$setting})) {
3563: $stored_form = join(',',
3564: map {
3565: &Apache::lonnet::escape($_);
3566: } sort(@{$ENV{'form.'.$setting}}));
3567: } else {
3568: $stored_form =
3569: &Apache::lonnet::escape($ENV{'form.'.$setting});
3570: }
3571: # Determine if the array contents are the same.
3572: if ($stored_form ne $ENV{$envname}) {
3573: $SaveHash{$basename} = $stored_form;
3574: $AppHash{$envname} = $stored_form;
3575: }
3576: }
3577: }
3578: }
3579: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
3580: $coursedom,
3581: $ENV{'course.'.$courseid.'.num'});
3582: if ($put_result !~ /^(ok|delayed)/) {
3583: &Apache::lonnet::logthis('unable to save form parameters, '.
3584: 'got error:'.$put_result);
3585: }
3586: # Make sure these settings stick around in this session, too
3587: &Apache::lonnet::appenv(%AppHash);
3588: return;
3589: }
3590:
3591: sub restore_course_settings {
3592: my $courseid = $ENV{'request.course.id'};
3593: my ($prefix,$Settings) = @_;
3594: while (my ($setting,$type) = each(%$Settings)) {
3595: next if (exists($ENV{'form.'.$setting}));
3596: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
3597: '.'.$setting;
3598: if (exists($ENV{$envname})) {
3599: if ($type eq 'scalar') {
3600: $ENV{'form.'.$setting} = $ENV{$envname};
3601: } elsif ($type eq 'array') {
3602: $ENV{'form.'.$setting} = [
3603: map {
3604: &Apache::lonnet::unescape($_);
3605: } split(',',$ENV{$envname})
3606: ];
3607: }
3608: }
3609: }
3610: }
3611:
3612: ############################################################
3613: ############################################################
3614:
3615: sub propath {
3616: my ($udom,$uname)=@_;
3617: $udom=~s/\W//g;
3618: $uname=~s/\W//g;
3619: my $subdir=$uname.'__';
3620: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
3621: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
3622: return $proname;
3623: }
3624:
3625: sub icon {
3626: my ($file)=@_;
3627: my $curfext = (split(/\./,$file))[-1];
3628: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
3629: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
3630: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
3631: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
3632: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3633: $curfext.".gif") {
3634: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
3635: $curfext.".gif";
3636: }
3637: }
3638: return $iconname;
3639: }
3640:
3641: =pod
3642:
3643: =back
3644:
3645: =cut
3646:
3647: 1;
3648: __END__;
3649:
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