1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.260 2005/04/22 20:50:07 albertel 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::lonmenu();
63: use Apache::lonlocal;
64: use HTML::Entities;
65:
66: my $readit;
67:
68: ##
69: ## Global Variables
70: ##
71:
72: # ----------------------------------------------- Filetypes/Languages/Copyright
73: my %language;
74: my %supported_language;
75: my %cprtag;
76: my %scprtag;
77: my %fe; my %fd;
78: my %category_extensions;
79:
80: # ---------------------------------------------- Designs
81:
82: my %designhash;
83:
84: # ---------------------------------------------- Thesaurus variables
85: #
86: # %Keywords:
87: # A hash used by &keyword to determine if a word is considered a keyword.
88: # $thesaurus_db_file
89: # Scalar containing the full path to the thesaurus database.
90:
91: my %Keywords;
92: my $thesaurus_db_file;
93:
94: #
95: # Initialize values from language.tab, copyright.tab, filetypes.tab,
96: # thesaurus.tab, and filecategories.tab.
97: #
98: BEGIN {
99: # Variable initialization
100: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
101: #
102: unless ($readit) {
103: # ------------------------------------------------------------------- languages
104: {
105: my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
106: '/language.tab';
107: if ( open(my $fh,"<$langtabfile") ) {
108: while (<$fh>) {
109: next if /^\#/;
110: chomp;
111: my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
112: $language{$key}=$val.' - '.$enc;
113: if ($sup) {
114: $supported_language{$key}=$sup;
115: }
116: }
117: close($fh);
118: }
119: }
120: # ------------------------------------------------------------------ copyrights
121: {
122: my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
123: '/copyright.tab';
124: if ( open (my $fh,"<$copyrightfile") ) {
125: while (<$fh>) {
126: next if /^\#/;
127: chomp;
128: my ($key,$val)=(split(/\s+/,$_,2));
129: $cprtag{$key}=$val;
130: }
131: close($fh);
132: }
133: }
134: # ------------------------------------------------------------------ source copyrights
135: {
136: my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
137: '/source_copyright.tab';
138: if ( open (my $fh,"<$sourcecopyrightfile") ) {
139: while (<$fh>) {
140: next if /^\#/;
141: chomp;
142: my ($key,$val)=(split(/\s+/,$_,2));
143: $scprtag{$key}=$val;
144: }
145: close($fh);
146: }
147: }
148:
149: # -------------------------------------------------------------- domain designs
150:
151: my $filename;
152: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
153: opendir(DIR,$designdir);
154: while ($filename=readdir(DIR)) {
155: my ($domain)=($filename=~/^(\w+)\./);
156: {
157: my $designfile = $designdir.'/'.$filename;
158: if ( open (my $fh,"<$designfile") ) {
159: while (<$fh>) {
160: next if /^\#/;
161: chomp;
162: my ($key,$val)=(split(/\=/,$_));
163: if ($val) { $designhash{$domain.'.'.$key}=$val; }
164: }
165: close($fh);
166: }
167: }
168:
169: }
170: closedir(DIR);
171:
172:
173: # ------------------------------------------------------------- file categories
174: {
175: my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
176: '/filecategories.tab';
177: if ( open (my $fh,"<$categoryfile") ) {
178: while (<$fh>) {
179: next if /^\#/;
180: chomp;
181: my ($extension,$category)=(split(/\s+/,$_,2));
182: push @{$category_extensions{lc($category)}},$extension;
183: }
184: close($fh);
185: }
186:
187: }
188: # ------------------------------------------------------------------ file types
189: {
190: my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
191: '/filetypes.tab';
192: if ( open (my $fh,"<$typesfile") ) {
193: while (<$fh>) {
194: next if (/^\#/);
195: chomp;
196: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
197: if ($descr ne '') {
198: $fe{$ending}=lc($emb);
199: $fd{$ending}=$descr;
200: }
201: }
202: close($fh);
203: }
204: }
205: &Apache::lonnet::logthis(
206: "<font color=yellow>INFO: Read file types</font>");
207: $readit=1;
208: } # end of unless($readit)
209:
210: }
211:
212: ###############################################################
213: ## HTML and Javascript Helper Functions ##
214: ###############################################################
215:
216: =pod
217:
218: =head1 HTML and Javascript Functions
219:
220: =over 4
221:
222: =item * browser_and_searcher_javascript ()
223:
224: X<browsing, javascript>X<searching, javascript>Returns a string
225: containing javascript with two functions, C<openbrowser> and
226: C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
227: tags.
228:
229: =item * openbrowser(formname,elementname,only,omit) [javascript]
230:
231: inputs: formname, elementname, only, omit
232:
233: formname and elementname indicate the name of the html form and name of
234: the element that the results of the browsing selection are to be placed in.
235:
236: Specifying 'only' will restrict the browser to displaying only files
237: with the given extension. Can be a comma separated list.
238:
239: Specifying 'omit' will restrict the browser to NOT displaying files
240: with the given extension. Can be a comma separated list.
241:
242: =item * opensearcher(formname, elementname) [javascript]
243:
244: Inputs: formname, elementname
245:
246: formname and elementname specify the name of the html form and the name
247: of the element the selection from the search results will be placed in.
248:
249: =cut
250:
251: sub browser_and_searcher_javascript {
252: my ($mode)=@_;
253: if (!defined($mode)) { $mode='edit'; }
254: my $resurl=&lastresurl();
255: return <<END;
256: // <!-- BEGIN LON-CAPA Internal
257: var editbrowser = null;
258: function openbrowser(formname,elementname,only,omit,titleelement) {
259: var url = '$resurl/?';
260: if (editbrowser == null) {
261: url += 'launch=1&';
262: }
263: url += 'catalogmode=interactive&';
264: url += 'mode=$mode&';
265: url += 'form=' + formname + '&';
266: if (only != null) {
267: url += 'only=' + only + '&';
268: } else {
269: url += 'only=&';
270: }
271: if (omit != null) {
272: url += 'omit=' + omit + '&';
273: } else {
274: url += 'omit=&';
275: }
276: if (titleelement != null) {
277: url += 'titleelement=' + titleelement + '&';
278: } else {
279: url += 'titleelement=&';
280: }
281: url += 'element=' + elementname + '';
282: var title = 'Browser';
283: var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
284: options += ',width=700,height=600';
285: editbrowser = open(url,title,options,'1');
286: editbrowser.focus();
287: }
288: var editsearcher;
289: function opensearcher(formname,elementname,titleelement) {
290: var url = '/adm/searchcat?';
291: if (editsearcher == null) {
292: url += 'launch=1&';
293: }
294: url += 'catalogmode=interactive&';
295: url += 'mode=$mode&';
296: url += 'form=' + formname + '&';
297: if (titleelement != null) {
298: url += 'titleelement=' + titleelement + '&';
299: } else {
300: url += 'titleelement=&';
301: }
302: url += 'element=' + elementname + '';
303: var title = 'Search';
304: var options = 'scrollbars=1,resizable=1,menubar=0';
305: options += ',width=700,height=600';
306: editsearcher = open(url,title,options,'1');
307: editsearcher.focus();
308: }
309: // END LON-CAPA Internal -->
310: END
311: }
312:
313: sub lastresurl {
314: if ($env{'environment.lastresurl'}) {
315: return $env{'environment.lastresurl'}
316: } else {
317: return '/res';
318: }
319: }
320:
321: sub storeresurl {
322: my $resurl=&Apache::lonnet::clutter(shift);
323: unless ($resurl=~/^\/res/) { return 0; }
324: $resurl=~s/\/$//;
325: &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
326: &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
327: return 1;
328: }
329:
330: sub studentbrowser_javascript {
331: unless (
332: (($env{'request.course.id'}) &&
333: (&Apache::lonnet::allowed('srm',$env{'request.course.id'})))
334: || ($env{'request.role'}=~/^(au|dc|su)/)
335: ) { return ''; }
336: return (<<'ENDSTDBRW');
337: <script type="text/javascript" language="Javascript" >
338: var stdeditbrowser;
339: function openstdbrowser(formname,uname,udom,roleflag) {
340: var url = '/adm/pickstudent?';
341: var filter;
342: eval('filter=document.'+formname+'.'+uname+'.value;');
343: if (filter != null) {
344: if (filter != '') {
345: url += 'filter='+filter+'&';
346: }
347: }
348: url += 'form=' + formname + '&unameelement='+uname+
349: '&udomelement='+udom;
350: if (roleflag) { url+="&roles=1"; }
351: var title = 'Student_Browser';
352: var options = 'scrollbars=1,resizable=1,menubar=0';
353: options += ',width=700,height=600';
354: stdeditbrowser = open(url,title,options,'1');
355: stdeditbrowser.focus();
356: }
357: </script>
358: ENDSTDBRW
359: }
360:
361: sub selectstudent_link {
362: my ($form,$unameele,$udomele)=@_;
363: if ($env{'request.course.id'}) {
364: unless (&Apache::lonnet::allowed('srm',$env{'request.course.id'})) {
365: return '';
366: }
367: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
368: '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
369: }
370: if ($env{'request.role'}=~/^(au|dc|su)/) {
371: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
372: '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
373: }
374: return '';
375: }
376:
377: sub coursebrowser_javascript {
378: my ($domainfilter)=@_;
379: return (<<ENDSTDBRW);
380: <script type="text/javascript" language="Javascript" >
381: var stdeditbrowser;
382: function opencrsbrowser(formname,uname,udom,desc,extra_element) {
383: var url = '/adm/pickcourse?';
384: var filter;
385: if (filter != null) {
386: if (filter != '') {
387: url += 'filter='+filter+'&';
388: }
389: }
390: var domainfilter='$domainfilter';
391: if (domainfilter != null) {
392: if (domainfilter != '') {
393: url += 'domainfilter='+domainfilter+'&';
394: }
395: }
396: url += 'form=' + formname + '&cnumelement='+uname+
397: '&cdomelement='+udom+
398: '&cnameelement='+desc;
399: if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
400: url += '&roleelement='+extra_element;
401: if (domainfilter == null || domainfilter == '') {
402: url += '&domainfilter='+extra_element;
403: }
404: }
405: var title = 'Course_Browser';
406: var options = 'scrollbars=1,resizable=1,menubar=0';
407: options += ',width=700,height=600';
408: stdeditbrowser = open(url,title,options,'1');
409: stdeditbrowser.focus();
410: }
411: </script>
412: ENDSTDBRW
413: }
414:
415: sub selectcourse_link {
416: my ($form,$unameele,$udomele,$desc,$extra_element)=@_;
417: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
418: '","'.$udomele.'","'.$desc.'","'.$extra_element.'");'."'>".&mt('Select Course')."</a>";
419: }
420:
421: =pod
422:
423: =item * linked_select_forms(...)
424:
425: linked_select_forms returns a string containing a <script></script> block
426: and html for two <select> menus. The select menus will be linked in that
427: changing the value of the first menu will result in new values being placed
428: in the second menu. The values in the select menu will appear in alphabetical
429: order.
430:
431: linked_select_forms takes the following ordered inputs:
432:
433: =over 4
434:
435: =item * $formname, the name of the <form> tag
436:
437: =item * $middletext, the text which appears between the <select> tags
438:
439: =item * $firstdefault, the default value for the first menu
440:
441: =item * $firstselectname, the name of the first <select> tag
442:
443: =item * $secondselectname, the name of the second <select> tag
444:
445: =item * $hashref, a reference to a hash containing the data for the menus.
446:
447: =back
448:
449: Below is an example of such a hash. Only the 'text', 'default', and
450: 'select2' keys must appear as stated. keys(%menu) are the possible
451: values for the first select menu. The text that coincides with the
452: first menu value is given in $menu{$choice1}->{'text'}. The values
453: and text for the second menu are given in the hash pointed to by
454: $menu{$choice1}->{'select2'}.
455:
456: my %menu = ( A1 => { text =>"Choice A1" ,
457: default => "B3",
458: select2 => {
459: B1 => "Choice B1",
460: B2 => "Choice B2",
461: B3 => "Choice B3",
462: B4 => "Choice B4"
463: }
464: },
465: A2 => { text =>"Choice A2" ,
466: default => "C2",
467: select2 => {
468: C1 => "Choice C1",
469: C2 => "Choice C2",
470: C3 => "Choice C3"
471: }
472: },
473: A3 => { text =>"Choice A3" ,
474: default => "D6",
475: select2 => {
476: D1 => "Choice D1",
477: D2 => "Choice D2",
478: D3 => "Choice D3",
479: D4 => "Choice D4",
480: D5 => "Choice D5",
481: D6 => "Choice D6",
482: D7 => "Choice D7"
483: }
484: }
485: );
486:
487: =cut
488:
489: sub linked_select_forms {
490: my ($formname,
491: $middletext,
492: $firstdefault,
493: $firstselectname,
494: $secondselectname,
495: $hashref
496: ) = @_;
497: my $second = "document.$formname.$secondselectname";
498: my $first = "document.$formname.$firstselectname";
499: # output the javascript to do the changing
500: my $result = '';
501: $result.="<script type=\"text/javascript\">\n";
502: $result.="var select2data = new Object();\n";
503: $" = '","';
504: my $debug = '';
505: foreach my $s1 (sort(keys(%$hashref))) {
506: $result.="select2data.d_$s1 = new Object();\n";
507: $result.="select2data.d_$s1.def = new String('".
508: $hashref->{$s1}->{'default'}."');\n";
509: $result.="select2data.d_$s1.values = new Array(";
510: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
511: $result.="\"@s2values\");\n";
512: $result.="select2data.d_$s1.texts = new Array(";
513: my @s2texts;
514: foreach my $value (@s2values) {
515: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
516: }
517: $result.="\"@s2texts\");\n";
518: }
519: $"=' ';
520: $result.= <<"END";
521:
522: function select1_changed() {
523: // Determine new choice
524: var newvalue = "d_" + $first.value;
525: // update select2
526: var values = select2data[newvalue].values;
527: var texts = select2data[newvalue].texts;
528: var select2def = select2data[newvalue].def;
529: var i;
530: // out with the old
531: for (i = 0; i < $second.options.length; i++) {
532: $second.options[i] = null;
533: }
534: // in with the nuclear
535: for (i=0;i<values.length; i++) {
536: $second.options[i] = new Option(values[i]);
537: $second.options[i].value = values[i];
538: $second.options[i].text = texts[i];
539: if (values[i] == select2def) {
540: $second.options[i].selected = true;
541: }
542: }
543: }
544: </script>
545: END
546: # output the initial values for the selection lists
547: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
548: foreach my $value (sort(keys(%$hashref))) {
549: $result.=" <option value=\"$value\" ";
550: $result.=" selected=\"selected\" " if ($value eq $firstdefault);
551: $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
552: }
553: $result .= "</select>\n";
554: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
555: $result .= $middletext;
556: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
557: my $seconddefault = $hashref->{$firstdefault}->{'default'};
558: foreach my $value (sort(keys(%select2))) {
559: $result.=" <option value=\"$value\" ";
560: $result.=" selected=\"selected\" " if ($value eq $seconddefault);
561: $result.=">".&mt($select2{$value})."</option>\n";
562: }
563: $result .= "</select>\n";
564: # return $debug;
565: return $result;
566: } # end of sub linked_select_forms {
567:
568: =pod
569:
570: =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
571:
572: Returns a string corresponding to an HTML link to the given help
573: $topic, where $topic corresponds to the name of a .tex file in
574: /home/httpd/html/adm/help/tex, with underscores replaced by
575: spaces.
576:
577: $text will optionally be linked to the same topic, allowing you to
578: link text in addition to the graphic. If you do not want to link
579: text, but wish to specify one of the later parameters, pass an
580: empty string.
581:
582: $stayOnPage is a value that will be interpreted as a boolean. If true,
583: the link will not open a new window. If false, the link will open
584: a new window using Javascript. (Default is false.)
585:
586: $width and $height are optional numerical parameters that will
587: override the width and height of the popped up window, which may
588: be useful for certain help topics with big pictures included.
589:
590: =cut
591:
592: sub help_open_topic {
593: my ($topic, $text, $stayOnPage, $width, $height) = @_;
594: $text = "" if (not defined $text);
595: $stayOnPage = 0 if (not defined $stayOnPage);
596: if ($env{'browser.interface'} eq 'textual' ||
597: $env{'environment.remote'} eq 'off' ) {
598: $stayOnPage=1;
599: }
600: $width = 350 if (not defined $width);
601: $height = 400 if (not defined $height);
602: my $filename = $topic;
603: $filename =~ s/ /_/g;
604:
605: my $template = "";
606: my $link;
607:
608: $topic=~s/\W/\_/g;
609:
610: if (!$stayOnPage)
611: {
612: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
613: }
614: else
615: {
616: $link = "/adm/help/${filename}.hlp";
617: }
618:
619: # Add the text
620: if ($text ne "")
621: {
622: $template .=
623: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
624: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
625: }
626:
627: # Add the graphic
628: my $title = &mt('Online Help');
629: my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
630: $template .= <<"ENDTEMPLATE";
631: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
632: ENDTEMPLATE
633: if ($text ne '') { $template.='</td></tr></table>' };
634: return $template;
635:
636: }
637:
638: # This is a quicky function for Latex cheatsheet editing, since it
639: # appears in at least four places
640: sub helpLatexCheatsheet {
641: my $other = shift;
642: my $addOther = '';
643: if ($other) {
644: $addOther = Apache::loncommon::help_open_topic($other, shift,
645: undef, undef, 600) .
646: '</td><td>';
647: }
648: return '<table><tr><td>'.
649: $addOther .
650: &Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
651: undef,undef,600)
652: .'</td><td>'.
653: &Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
654: undef,undef,600)
655: .'</td></tr></table>';
656: }
657:
658: sub help_open_menu {
659: my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
660: $text = "" if (not defined $text);
661: $stayOnPage = 0 if (not defined $stayOnPage);
662: if ($env{'browser.interface'} eq 'textual' ||
663: $env{'environment.remote'} eq 'off' ) {
664: $stayOnPage=1;
665: }
666: $width = 620 if (not defined $width);
667: $height = 600 if (not defined $height);
668: my $link='';
669: my $title = &mt('Get help');
670: my $origurl = $ENV{'REQUEST_URI'};
671: $origurl=~s|^/~|/priv/|;
672: my $timestamp = time;
673: foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
674: $$_ = &Apache::lonnet::escape($$_);
675: }
676:
677: if (!$stayOnPage) {
678: $link = "javascript:helpMenu('open')";
679: } else {
680: $link = "javascript:helpMenu('display')";
681: }
682: 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";
683: 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";
684: my $template;
685: if ($text ne "") {
686: $template .=
687: "<table bgcolor='#773311' cellspacing='1' cellpadding='1' border='0'><tr>".
688: "<td bgcolor='#886622'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
689: }
690: my $html=&Apache::lonxml::xmlbegin();
691: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
692: $template .= <<"ENDTEMPLATE";
693: <script type="text/javascript">
694: // <!-- BEGIN LON-CAPA Internal
695: // <![CDATA[
696: function helpMenu(target) {
697: var caller = this;
698: if (target == 'open') {
699: var newWindow = null;
700: try {
701: newWindow = window.open("/adm/rat/empty.html","helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
702: }
703: catch(error) {
704: writeHelp(caller);
705: return;
706: }
707: if (newWindow) {
708: caller = newWindow;
709: }
710: }
711: writeHelp(caller);
712: return;
713: }
714: function writeHelp(caller) {
715: caller.document.write('$html<head><title>LON-CAPA Help Menu</title><meta http-equiv="pragma" content="no-cache"></head>')
716: caller.document.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
717: caller.document.write("</html>")
718: caller.document.close()
719: caller.focus()
720: }
721: // ]]>
722: // END LON-CAPA Internal -->
723: </script>
724: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
725: ENDTEMPLATE
726: if ($component_help) {
727: if (!$text) {
728: $template=&help_open_topic($component_help,undef,$stayOnPage,
729: $width,$height).' '.$template;
730: } else {
731: my $help_text;
732: $help_text=&Apache::lonnet::unescape($topic);
733: $template='<table><tr><td>'.
734: &help_open_topic($component_help,$help_text,$stayOnPage,
735: $width,$height).'</td><td>'.$template.
736: '</td></tr></table>';
737: }
738: }
739: if ($text ne '') { $template.='</td></tr></table>' };
740: return $template;
741: }
742:
743: sub help_open_bug {
744: my ($topic, $text, $stayOnPage, $width, $height) = @_;
745: unless ($env{'user.adv'}) { return ''; }
746: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
747: $text = "" if (not defined $text);
748: $stayOnPage = 0 if (not defined $stayOnPage);
749: if ($env{'browser.interface'} eq 'textual' ||
750: $env{'environment.remote'} eq 'off' ) {
751: $stayOnPage=1;
752: }
753: $width = 600 if (not defined $width);
754: $height = 600 if (not defined $height);
755:
756: $topic=~s/\W+/\+/g;
757: my $link='';
758: my $template='';
759: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
760: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
761: if (!$stayOnPage)
762: {
763: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
764: }
765: else
766: {
767: $link = $url;
768: }
769: # Add the text
770: if ($text ne "")
771: {
772: $template .=
773: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
774: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
775: }
776:
777: # Add the graphic
778: my $title = &mt('Report a Bug');
779: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
780: $template .= <<"ENDTEMPLATE";
781: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
782: ENDTEMPLATE
783: if ($text ne '') { $template.='</td></tr></table>' };
784: return $template;
785:
786: }
787:
788: sub help_open_faq {
789: my ($topic, $text, $stayOnPage, $width, $height) = @_;
790: unless ($env{'user.adv'}) { return ''; }
791: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
792: $text = "" if (not defined $text);
793: $stayOnPage = 0 if (not defined $stayOnPage);
794: if ($env{'browser.interface'} eq 'textual' ||
795: $env{'environment.remote'} eq 'off' ) {
796: $stayOnPage=1;
797: }
798: $width = 350 if (not defined $width);
799: $height = 400 if (not defined $height);
800:
801: $topic=~s/\W+/\+/g;
802: my $link='';
803: my $template='';
804: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
805: if (!$stayOnPage)
806: {
807: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
808: }
809: else
810: {
811: $link = $url;
812: }
813:
814: # Add the text
815: if ($text ne "")
816: {
817: $template .=
818: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
819: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
820: }
821:
822: # Add the graphic
823: my $title = &mt('View the FAQ');
824: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
825: $template .= <<"ENDTEMPLATE";
826: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
827: ENDTEMPLATE
828: if ($text ne '') { $template.='</td></tr></table>' };
829: return $template;
830:
831: }
832:
833: ###############################################################
834: ###############################################################
835:
836: =pod
837:
838: =item * change_content_javascript():
839:
840: This and the next function allow you to create small sections of an
841: otherwise static HTML page that you can update on the fly with
842: Javascript, even in Netscape 4.
843:
844: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
845: must be written to the HTML page once. It will prove the Javascript
846: function "change(name, content)". Calling the change function with the
847: name of the section
848: you want to update, matching the name passed to C<changable_area>, and
849: the new content you want to put in there, will put the content into
850: that area.
851:
852: B<Note>: Netscape 4 only reserves enough space for the changable area
853: to contain room for the original contents. You need to "make space"
854: for whatever changes you wish to make, and be B<sure> to check your
855: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
856: it's adequate for updating a one-line status display, but little more.
857: This script will set the space to 100% width, so you only need to
858: worry about height in Netscape 4.
859:
860: Modern browsers are much less limiting, and if you can commit to the
861: user not using Netscape 4, this feature may be used freely with
862: pretty much any HTML.
863:
864: =cut
865:
866: sub change_content_javascript {
867: # If we're on Netscape 4, we need to use Layer-based code
868: if ($env{'browser.type'} eq 'netscape' &&
869: $env{'browser.version'} =~ /^4\./) {
870: return (<<NETSCAPE4);
871: function change(name, content) {
872: doc = document.layers[name+"___escape"].layers[0].document;
873: doc.open();
874: doc.write(content);
875: doc.close();
876: }
877: NETSCAPE4
878: } else {
879: # Otherwise, we need to use semi-standards-compliant code
880: # (technically, "innerHTML" isn't standard but the equivalent
881: # is really scary, and every useful browser supports it
882: return (<<DOMBASED);
883: function change(name, content) {
884: element = document.getElementById(name);
885: element.innerHTML = content;
886: }
887: DOMBASED
888: }
889: }
890:
891: =pod
892:
893: =item * changable_area($name, $origContent):
894:
895: This provides a "changable area" that can be modified on the fly via
896: the Javascript code provided in C<change_content_javascript>. $name is
897: the name you will use to reference the area later; do not repeat the
898: same name on a given HTML page more then once. $origContent is what
899: the area will originally contain, which can be left blank.
900:
901: =cut
902:
903: sub changable_area {
904: my ($name, $origContent) = @_;
905:
906: if ($env{'browser.type'} eq 'netscape' &&
907: $env{'browser.version'} =~ /^4\./) {
908: # If this is netscape 4, we need to use the Layer tag
909: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
910: } else {
911: return "<span id='$name'>$origContent</span>";
912: }
913: }
914:
915: =pod
916:
917: =back
918:
919: =head1 Excel and CSV file utility routines
920:
921: =over 4
922:
923: =cut
924:
925: ###############################################################
926: ###############################################################
927:
928: =pod
929:
930: =item * csv_translate($text)
931:
932: Translate $text to allow it to be output as a 'comma separated values'
933: format.
934:
935: =cut
936:
937: ###############################################################
938: ###############################################################
939: sub csv_translate {
940: my $text = shift;
941: $text =~ s/\"/\"\"/g;
942: $text =~ s/\n/ /g;
943: return $text;
944: }
945:
946: ###############################################################
947: ###############################################################
948:
949: =pod
950:
951: =item * define_excel_formats
952:
953: Define some commonly used Excel cell formats.
954:
955: Currently supported formats:
956:
957: =over 4
958:
959: =item header
960:
961: =item bold
962:
963: =item h1
964:
965: =item h2
966:
967: =item h3
968:
969: =item h4
970:
971: =item i
972:
973: =item date
974:
975: =back
976:
977: Inputs: $workbook
978:
979: Returns: $format, a hash reference.
980:
981: =cut
982:
983: ###############################################################
984: ###############################################################
985: sub define_excel_formats {
986: my ($workbook) = @_;
987: my $format;
988: $format->{'header'} = $workbook->add_format(bold => 1,
989: bottom => 1,
990: align => 'center');
991: $format->{'bold'} = $workbook->add_format(bold=>1);
992: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
993: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
994: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
995: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
996: $format->{'i'} = $workbook->add_format(italic=>1);
997: $format->{'date'} = $workbook->add_format(num_format=>
998: 'mm/dd/yyyy hh:mm:ss');
999: return $format;
1000: }
1001:
1002: ###############################################################
1003: ###############################################################
1004:
1005: =pod
1006:
1007: =item * create_workbook
1008:
1009: Create an Excel worksheet. If it fails, output message on the
1010: request object and return undefs.
1011:
1012: Inputs: Apache request object
1013:
1014: Returns (undef) on failure,
1015: Excel worksheet object, scalar with filename, and formats
1016: from &Apache::loncommon::define_excel_formats on success
1017:
1018: =cut
1019:
1020: ###############################################################
1021: ###############################################################
1022: sub create_workbook {
1023: my ($r) = @_;
1024: #
1025: # Create the excel spreadsheet
1026: my $filename = '/prtspool/'.
1027: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1028: time.'_'.rand(1000000000).'.xls';
1029: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1030: if (! defined($workbook)) {
1031: $r->log_error("Error creating excel spreadsheet $filename: $!");
1032: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1033: "This error has been logged. ".
1034: "Please alert your LON-CAPA administrator").
1035: '</p>');
1036: return (undef);
1037: }
1038: #
1039: $workbook->set_tempdir('/home/httpd/perl/tmp');
1040: #
1041: my $format = &Apache::loncommon::define_excel_formats($workbook);
1042: return ($workbook,$filename,$format);
1043: }
1044:
1045: ###############################################################
1046: ###############################################################
1047:
1048: =pod
1049:
1050: =item * create_text_file
1051:
1052: Create a file to write to and eventually make available to the usre.
1053: If file creation fails, outputs an error message on the request object and
1054: return undefs.
1055:
1056: Inputs: Apache request object, and file suffix
1057:
1058: Returns (undef) on failure,
1059: Filehandle and filename on success.
1060:
1061: =cut
1062:
1063: ###############################################################
1064: ###############################################################
1065: sub create_text_file {
1066: my ($r,$suffix) = @_;
1067: if (! defined($suffix)) { $suffix = 'txt'; };
1068: my $fh;
1069: my $filename = '/prtspool/'.
1070: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1071: time.'_'.rand(1000000000).'.'.$suffix;
1072: $fh = Apache::File->new('>/home/httpd'.$filename);
1073: if (! defined($fh)) {
1074: $r->log_error("Couldn't open $filename for output $!");
1075: $r->print("Problems occured in creating the output file. ".
1076: "This error has been logged. ".
1077: "Please alert your LON-CAPA administrator.");
1078: }
1079: return ($fh,$filename)
1080: }
1081:
1082:
1083: =pod
1084:
1085: =back
1086:
1087: =cut
1088:
1089: ###############################################################
1090: ## Home server <option> list generating code ##
1091: ###############################################################
1092:
1093: =pod
1094:
1095: =head1 Home Server option list generating code
1096:
1097: =over 4
1098:
1099: =item * get_domains()
1100:
1101: Returns an array containing each of the domains listed in the hosts.tab
1102: file.
1103:
1104: =cut
1105:
1106: #-------------------------------------------
1107: sub get_domains {
1108: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1109: my @domains;
1110: my %seen;
1111: foreach (sort values(%Apache::lonnet::hostdom)) {
1112: push (@domains,$_) unless $seen{$_}++;
1113: }
1114: return @domains;
1115: }
1116:
1117: # ------------------------------------------
1118:
1119: sub domain_select {
1120: my ($name,$value,$multiple)=@_;
1121: my %domains=map {
1122: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1123: } &get_domains;
1124: if ($multiple) {
1125: $domains{''}=&mt('Any domain');
1126: return &multiple_select_form($name,$value,4,%domains);
1127: } else {
1128: return &select_form($name,$value,%domains);
1129: }
1130: }
1131:
1132: sub multiple_select_form {
1133: my ($name,$value,$size,%hash)=@_;
1134: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1135: my $output='';
1136: if (! defined($size)) {
1137: $size = 4;
1138: if (scalar(keys(%hash))<4) {
1139: $size = scalar(keys(%hash));
1140: }
1141: }
1142: $output.="\n<select name='$name' size='$size' multiple='1'>";
1143: foreach (sort(keys(%hash))) {
1144: $output.='<option value="'.$_.'" ';
1145: $output.='selected="selected" ' if ($selected{$_});
1146: $output.='>'.$hash{$_}."</option>\n";
1147: }
1148: $output.="</select>\n";
1149: return $output;
1150: }
1151:
1152: #-------------------------------------------
1153:
1154: =pod
1155:
1156: =item * select_form($defdom,$name,%hash)
1157:
1158: Returns a string containing a <select name='$name' size='1'> form to
1159: allow a user to select options from a hash option_name => displayed text.
1160: See lonrights.pm for an example invocation and use.
1161:
1162: =cut
1163:
1164: #-------------------------------------------
1165: sub select_form {
1166: my ($def,$name,%hash) = @_;
1167: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1168: my @keys;
1169: if (exists($hash{'select_form_order'})) {
1170: @keys=@{$hash{'select_form_order'}};
1171: } else {
1172: @keys=sort(keys(%hash));
1173: }
1174: foreach (@keys) {
1175: $selectform.="<option value=\"$_\" ".
1176: ($_ eq $def ? 'selected="selected" ' : '').
1177: ">".&mt($hash{$_})."</option>\n";
1178: }
1179: $selectform.="</select>";
1180: return $selectform;
1181: }
1182:
1183: sub gradeleveldescription {
1184: my $gradelevel=shift;
1185: my %gradelevels=(0 => 'Not specified',
1186: 1 => 'Grade 1',
1187: 2 => 'Grade 2',
1188: 3 => 'Grade 3',
1189: 4 => 'Grade 4',
1190: 5 => 'Grade 5',
1191: 6 => 'Grade 6',
1192: 7 => 'Grade 7',
1193: 8 => 'Grade 8',
1194: 9 => 'Grade 9',
1195: 10 => 'Grade 10',
1196: 11 => 'Grade 11',
1197: 12 => 'Grade 12',
1198: 13 => 'Grade 13',
1199: 14 => '100 Level',
1200: 15 => '200 Level',
1201: 16 => '300 Level',
1202: 17 => '400 Level',
1203: 18 => 'Graduate Level');
1204: return &mt($gradelevels{$gradelevel});
1205: }
1206:
1207: sub select_level_form {
1208: my ($deflevel,$name)=@_;
1209: unless ($deflevel) { $deflevel=0; }
1210: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1211: for (my $i=0; $i<=18; $i++) {
1212: $selectform.="<option value=\"$i\" ".
1213: ($i==$deflevel ? 'selected="selected" ' : '').
1214: ">".&gradeleveldescription($i)."</option>\n";
1215: }
1216: $selectform.="</select>";
1217: return $selectform;
1218: }
1219:
1220: #-------------------------------------------
1221:
1222: =pod
1223:
1224: =item * select_dom_form($defdom,$name,$includeempty)
1225:
1226: Returns a string containing a <select name='$name' size='1'> form to
1227: allow a user to select the domain to preform an operation in.
1228: See loncreateuser.pm for an example invocation and use.
1229:
1230: If the $includeempty flag is set, it also includes an empty choice ("no domain
1231: selected");
1232:
1233: =cut
1234:
1235: #-------------------------------------------
1236: sub select_dom_form {
1237: my ($defdom,$name,$includeempty) = @_;
1238: my @domains = get_domains();
1239: if ($includeempty) { @domains=('',@domains); }
1240: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1241: foreach (@domains) {
1242: $selectdomain.="<option value=\"$_\" ".
1243: ($_ eq $defdom ? 'selected="selected" ' : '').
1244: ">$_</option>\n";
1245: }
1246: $selectdomain.="</select>";
1247: return $selectdomain;
1248: }
1249:
1250: #-------------------------------------------
1251:
1252: =pod
1253:
1254: =item * get_library_servers($domain)
1255:
1256: Returns a hash which contains keys like '103l3' and values like
1257: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1258: given $domain.
1259:
1260: =cut
1261:
1262: #-------------------------------------------
1263: sub get_library_servers {
1264: my $domain = shift;
1265: my %library_servers;
1266: foreach (keys(%Apache::lonnet::libserv)) {
1267: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1268: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1269: }
1270: }
1271: return %library_servers;
1272: }
1273:
1274: #-------------------------------------------
1275:
1276: =pod
1277:
1278: =item * home_server_option_list($domain)
1279:
1280: returns a string which contains an <option> list to be used in a
1281: <select> form input. See loncreateuser.pm for an example.
1282:
1283: =cut
1284:
1285: #-------------------------------------------
1286: sub home_server_option_list {
1287: my $domain = shift;
1288: my %servers = &get_library_servers($domain);
1289: my $result = '';
1290: foreach (sort keys(%servers)) {
1291: $result.=
1292: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1293: }
1294: return $result;
1295: }
1296:
1297: =pod
1298:
1299: =back
1300:
1301: =cut
1302:
1303: ###############################################################
1304: ## Decoding User Agent ##
1305: ###############################################################
1306:
1307: =pod
1308:
1309: =head1 Decoding the User Agent
1310:
1311: =over 4
1312:
1313: =item * &decode_user_agent()
1314:
1315: Inputs: $r
1316:
1317: Outputs:
1318:
1319: =over 4
1320:
1321: =item * $httpbrowser
1322:
1323: =item * $clientbrowser
1324:
1325: =item * $clientversion
1326:
1327: =item * $clientmathml
1328:
1329: =item * $clientunicode
1330:
1331: =item * $clientos
1332:
1333: =back
1334:
1335: =back
1336:
1337: =cut
1338:
1339: ###############################################################
1340: ###############################################################
1341: sub decode_user_agent {
1342: my ($r)=@_;
1343: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1344: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1345: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1346: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1347: my $clientbrowser='unknown';
1348: my $clientversion='0';
1349: my $clientmathml='';
1350: my $clientunicode='0';
1351: for (my $i=0;$i<=$#browsertype;$i++) {
1352: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1353: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1354: $clientbrowser=$bname;
1355: $httpbrowser=~/$vreg/i;
1356: $clientversion=$1;
1357: $clientmathml=($clientversion>=$minv);
1358: $clientunicode=($clientversion>=$univ);
1359: }
1360: }
1361: my $clientos='unknown';
1362: if (($httpbrowser=~/linux/i) ||
1363: ($httpbrowser=~/unix/i) ||
1364: ($httpbrowser=~/ux/i) ||
1365: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1366: if (($httpbrowser=~/vax/i) ||
1367: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1368: if ($httpbrowser=~/next/i) { $clientos='next'; }
1369: if (($httpbrowser=~/mac/i) ||
1370: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1371: if ($httpbrowser=~/win/i) { $clientos='win'; }
1372: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1373: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1374: $clientunicode,$clientos,);
1375: }
1376:
1377: ###############################################################
1378: ## Authentication changing form generation subroutines ##
1379: ###############################################################
1380: ##
1381: ## All of the authform_xxxxxxx subroutines take their inputs in a
1382: ## hash, and have reasonable default values.
1383: ##
1384: ## formname = the name given in the <form> tag.
1385: #-------------------------------------------
1386:
1387: =pod
1388:
1389: =head1 Authentication Routines
1390:
1391: =over 4
1392:
1393: =item * authform_xxxxxx
1394:
1395: The authform_xxxxxx subroutines provide javascript and html forms which
1396: handle some of the conveniences required for authentication forms.
1397: This is not an optimal method, but it works.
1398:
1399: See loncreateuser.pm for invocation and use examples.
1400:
1401: =over 4
1402:
1403: =item * authform_header
1404:
1405: =item * authform_authorwarning
1406:
1407: =item * authform_nochange
1408:
1409: =item * authform_kerberos
1410:
1411: =item * authform_internal
1412:
1413: =item * authform_filesystem
1414:
1415: =back
1416:
1417: =back
1418:
1419: =cut
1420:
1421: #-------------------------------------------
1422: sub authform_header{
1423: my %in = (
1424: formname => 'cu',
1425: kerb_def_dom => '',
1426: @_,
1427: );
1428: $in{'formname'} = 'document.' . $in{'formname'};
1429: my $result='';
1430:
1431: #---------------------------------------------- Code for upper case translation
1432: my $Javascript_toUpperCase;
1433: unless ($in{kerb_def_dom}) {
1434: $Javascript_toUpperCase =<<"END";
1435: switch (choice) {
1436: case 'krb': currentform.elements[choicearg].value =
1437: currentform.elements[choicearg].value.toUpperCase();
1438: break;
1439: default:
1440: }
1441: END
1442: } else {
1443: $Javascript_toUpperCase = "";
1444: }
1445:
1446: my $radioval = "'nochange'";
1447: if (exists($in{'curr_authtype'}) &&
1448: defined($in{'curr_authtype'}) &&
1449: $in{'curr_authtype'} ne '') {
1450: $radioval = "'$in{'curr_authtype'}arg'";
1451: }
1452: my $argfield = 'null';
1453: if ( grep/^mode$/,(keys %in) ) {
1454: if ($in{'mode'} eq 'modifycourse') {
1455: if ( grep/^curr_authtype$/,(keys %in) ) {
1456: $radioval = "'$in{'curr_authtype'}'";
1457: }
1458: if ( grep/^curr_autharg$/,(keys %in) ) {
1459: unless ($in{'curr_autharg'} eq '') {
1460: $argfield = "'$in{'curr_autharg'}'";
1461: }
1462: }
1463: }
1464: }
1465:
1466: $result.=<<"END";
1467: var current = new Object();
1468: current.radiovalue = $radioval;
1469: current.argfield = $argfield;
1470:
1471: function changed_radio(choice,currentform) {
1472: var choicearg = choice + 'arg';
1473: // If a radio button in changed, we need to change the argfield
1474: if (current.radiovalue != choice) {
1475: current.radiovalue = choice;
1476: if (current.argfield != null) {
1477: currentform.elements[current.argfield].value = '';
1478: }
1479: if (choice == 'nochange') {
1480: current.argfield = null;
1481: } else {
1482: current.argfield = choicearg;
1483: switch(choice) {
1484: case 'krb':
1485: currentform.elements[current.argfield].value =
1486: "$in{'kerb_def_dom'}";
1487: break;
1488: default:
1489: break;
1490: }
1491: }
1492: }
1493: return;
1494: }
1495:
1496: function changed_text(choice,currentform) {
1497: var choicearg = choice + 'arg';
1498: if (currentform.elements[choicearg].value !='') {
1499: $Javascript_toUpperCase
1500: // clear old field
1501: if ((current.argfield != choicearg) && (current.argfield != null)) {
1502: currentform.elements[current.argfield].value = '';
1503: }
1504: current.argfield = choicearg;
1505: }
1506: set_auth_radio_buttons(choice,currentform);
1507: return;
1508: }
1509:
1510: function set_auth_radio_buttons(newvalue,currentform) {
1511: var i=0;
1512: while (i < currentform.login.length) {
1513: if (currentform.login[i].value == newvalue) { break; }
1514: i++;
1515: }
1516: if (i == currentform.login.length) {
1517: return;
1518: }
1519: current.radiovalue = newvalue;
1520: currentform.login[i].checked = true;
1521: return;
1522: }
1523: END
1524: return $result;
1525: }
1526:
1527: sub authform_authorwarning{
1528: my $result='';
1529: $result='<i>'.
1530: &mt('As a general rule, only authors or co-authors should be '.
1531: 'filesystem authenticated '.
1532: '(which allows access to the server filesystem).')."</i>\n";
1533: return $result;
1534: }
1535:
1536: sub authform_nochange{
1537: my %in = (
1538: formname => 'document.cu',
1539: kerb_def_dom => 'MSU.EDU',
1540: @_,
1541: );
1542: my $result = &mt('[_1] Do not change login data',
1543: '<input type="radio" name="login" value="nochange" '.
1544: 'checked="checked" onclick="'.
1545: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1546: return $result;
1547: }
1548:
1549: sub authform_kerberos{
1550: my %in = (
1551: formname => 'document.cu',
1552: kerb_def_dom => 'MSU.EDU',
1553: kerb_def_auth => 'krb4',
1554: @_,
1555: );
1556: my ($check4,$check5,$krbarg);
1557: if ($in{'kerb_def_auth'} eq 'krb5') {
1558: $check5 = " checked=\"on\"";
1559: } else {
1560: $check4 = " checked=\"on\"";
1561: }
1562: $krbarg = $in{'kerb_def_dom'};
1563:
1564: my $krbcheck = "";
1565: if ( grep/^curr_authtype$/,(keys %in) ) {
1566: if ($in{'curr_authtype'} =~ m/^krb/) {
1567: $krbcheck = " checked=\"on\"";
1568: if ( grep/^curr_autharg$/,(keys %in) ) {
1569: $krbarg = $in{'curr_autharg'};
1570: }
1571: }
1572: }
1573:
1574: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1575: my $result .= &mt
1576: ('[_1] Kerberos authenticated with domain [_2] '.
1577: '[_3] Version 4 [_4] Version 5',
1578: '<input type="radio" name="login" value="krb" '.
1579: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1580: '<input type="text" size="10" name="krbarg" '.
1581: 'value="'.$krbarg.'" '.
1582: 'onchange="'.$jscall.'" />',
1583: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1584: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1585: return $result;
1586: }
1587:
1588: sub authform_internal{
1589: my %args = (
1590: formname => 'document.cu',
1591: kerb_def_dom => 'MSU.EDU',
1592: @_,
1593: );
1594:
1595: my $intcheck = "";
1596: my $intarg = 'value=""';
1597: if ( grep/^curr_authtype$/,(keys %args) ) {
1598: if ($args{'curr_authtype'} eq 'int') {
1599: $intcheck = " checked=\"on\"";
1600: if ( grep/^curr_autharg$/,(keys %args) ) {
1601: $intarg = "value=\"$args{'curr_autharg'}\"";
1602: }
1603: }
1604: }
1605:
1606: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1607: my $result.=&mt
1608: ('[_1] Internally authenticated (with initial password [_2])',
1609: '<input type="radio" name="login" value="int" '.$intcheck.
1610: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1611: '<input type="text" size="10" name="intarg" '.$intarg.
1612: ' onchange="'.$jscall.'" />');
1613: return $result;
1614: }
1615:
1616: sub authform_local{
1617: my %in = (
1618: formname => 'document.cu',
1619: kerb_def_dom => 'MSU.EDU',
1620: @_,
1621: );
1622:
1623: my $loccheck = "";
1624: my $locarg = 'value=""';
1625: if ( grep/^curr_authtype$/,(keys %in) ) {
1626: if ($in{'curr_authtype'} eq 'loc') {
1627: $loccheck = " checked=\"on\"";
1628: if ( grep/^curr_autharg$/,(keys %in) ) {
1629: $locarg = "value=\"$in{'curr_autharg'}\"";
1630: }
1631: }
1632: }
1633:
1634: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1635: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1636: '<input type="radio" name="login" value="loc" '.$loccheck.
1637: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1638: '<input type="text" size="10" name="locarg" '.$locarg.
1639: ' onchange="'.$jscall.'" />');
1640: return $result;
1641: }
1642:
1643: sub authform_filesystem{
1644: my %in = (
1645: formname => 'document.cu',
1646: kerb_def_dom => 'MSU.EDU',
1647: @_,
1648: );
1649: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1650: my $result.= &mt
1651: ('[_1] Filesystem Authenticated (with initial password [_2])',
1652: '<input type="radio" name="login" value="fsys" '.
1653: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1654: '<input type="text" size="10" name="fsysarg" value="" '.
1655: 'onchange="'.$jscall.'" />');
1656: return $result;
1657: }
1658:
1659: ###############################################################
1660: ## Get Authentication Defaults for Domain ##
1661: ###############################################################
1662:
1663: =pod
1664:
1665: =head1 Domains and Authentication
1666:
1667: Returns default authentication type and an associated argument as
1668: listed in file 'domain.tab'.
1669:
1670: =over 4
1671:
1672: =item * get_auth_defaults
1673:
1674: get_auth_defaults($target_domain) returns the default authentication
1675: type and an associated argument (initial password or a kerberos domain).
1676: These values are stored in lonTabs/domain.tab
1677:
1678: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1679:
1680: If target_domain is not found in domain.tab, returns nothing ('').
1681:
1682: =cut
1683:
1684: #-------------------------------------------
1685: sub get_auth_defaults {
1686: my $domain=shift;
1687: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1688: }
1689: ###############################################################
1690: ## End Get Authentication Defaults for Domain ##
1691: ###############################################################
1692:
1693: ###############################################################
1694: ## Get Kerberos Defaults for Domain ##
1695: ###############################################################
1696: ##
1697: ## Returns default kerberos version and an associated argument
1698: ## as listed in file domain.tab. If not listed, provides
1699: ## appropriate default domain and kerberos version.
1700: ##
1701: #-------------------------------------------
1702:
1703: =pod
1704:
1705: =item * get_kerberos_defaults
1706:
1707: get_kerberos_defaults($target_domain) returns the default kerberos
1708: version and domain. If not found in domain.tabs, it defaults to
1709: version 4 and the domain of the server.
1710:
1711: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1712:
1713: =cut
1714:
1715: #-------------------------------------------
1716: sub get_kerberos_defaults {
1717: my $domain=shift;
1718: my ($krbdef,$krbdefdom) =
1719: &Apache::loncommon::get_auth_defaults($domain);
1720: unless ($krbdef =~/^krb/ && $krbdefdom) {
1721: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1722: my $krbdefdom=$1;
1723: $krbdefdom=~tr/a-z/A-Z/;
1724: $krbdef = "krb4";
1725: }
1726: return ($krbdef,$krbdefdom);
1727: }
1728:
1729: =pod
1730:
1731: =back
1732:
1733: =cut
1734:
1735: ###############################################################
1736: ## Thesaurus Functions ##
1737: ###############################################################
1738:
1739: =pod
1740:
1741: =head1 Thesaurus Functions
1742:
1743: =over 4
1744:
1745: =item * initialize_keywords
1746:
1747: Initializes the package variable %Keywords if it is empty. Uses the
1748: package variable $thesaurus_db_file.
1749:
1750: =cut
1751:
1752: ###################################################
1753:
1754: sub initialize_keywords {
1755: return 1 if (scalar keys(%Keywords));
1756: # If we are here, %Keywords is empty, so fill it up
1757: # Make sure the file we need exists...
1758: if (! -e $thesaurus_db_file) {
1759: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1760: " failed because it does not exist");
1761: return 0;
1762: }
1763: # Set up the hash as a database
1764: my %thesaurus_db;
1765: if (! tie(%thesaurus_db,'GDBM_File',
1766: $thesaurus_db_file,&GDBM_READER(),0640)){
1767: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1768: $thesaurus_db_file);
1769: return 0;
1770: }
1771: # Get the average number of appearances of a word.
1772: my $avecount = $thesaurus_db{'average.count'};
1773: # Put keywords (those that appear > average) into %Keywords
1774: while (my ($word,$data)=each (%thesaurus_db)) {
1775: my ($count,undef) = split /:/,$data;
1776: $Keywords{$word}++ if ($count > $avecount);
1777: }
1778: untie %thesaurus_db;
1779: # Remove special values from %Keywords.
1780: foreach ('total.count','average.count') {
1781: delete($Keywords{$_}) if (exists($Keywords{$_}));
1782: }
1783: return 1;
1784: }
1785:
1786: ###################################################
1787:
1788: =pod
1789:
1790: =item * keyword($word)
1791:
1792: Returns true if $word is a keyword. A keyword is a word that appears more
1793: than the average number of times in the thesaurus database. Calls
1794: &initialize_keywords
1795:
1796: =cut
1797:
1798: ###################################################
1799:
1800: sub keyword {
1801: return if (!&initialize_keywords());
1802: my $word=lc(shift());
1803: $word=~s/\W//g;
1804: return exists($Keywords{$word});
1805: }
1806:
1807: ###############################################################
1808:
1809: =pod
1810:
1811: =item * get_related_words
1812:
1813: Look up a word in the thesaurus. Takes a scalar argument and returns
1814: an array of words. If the keyword is not in the thesaurus, an empty array
1815: will be returned. The order of the words returned is determined by the
1816: database which holds them.
1817:
1818: Uses global $thesaurus_db_file.
1819:
1820: =cut
1821:
1822: ###############################################################
1823: sub get_related_words {
1824: my $keyword = shift;
1825: my %thesaurus_db;
1826: if (! -e $thesaurus_db_file) {
1827: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1828: "failed because the file does not exist");
1829: return ();
1830: }
1831: if (! tie(%thesaurus_db,'GDBM_File',
1832: $thesaurus_db_file,&GDBM_READER(),0640)){
1833: return ();
1834: }
1835: my @Words=();
1836: if (exists($thesaurus_db{$keyword})) {
1837: $_ = $thesaurus_db{$keyword};
1838: (undef,@Words) = split/:/; # The first element is the number of times
1839: # the word appears. We do not need it now.
1840: for (my $i=0;$i<=$#Words;$i++) {
1841: ($Words[$i],undef)= split/\,/,$Words[$i];
1842: }
1843: }
1844: untie %thesaurus_db;
1845: return @Words;
1846: }
1847:
1848: =pod
1849:
1850: =back
1851:
1852: =cut
1853:
1854: # -------------------------------------------------------------- Plaintext name
1855: =pod
1856:
1857: =head1 User Name Functions
1858:
1859: =over 4
1860:
1861: =item * plainname($uname,$udom,$first)
1862:
1863: Takes a users logon name and returns it as a string in
1864: "first middle last generation" form
1865: if $first is set to 'lastname' then it returns it as
1866: 'lastname generation, firstname middlename' if their is a lastname
1867:
1868: =cut
1869:
1870: ###############################################################
1871: sub plainname {
1872: my ($uname,$udom,$first)=@_;
1873: my %names=&Apache::lonnet::get('environment',
1874: ['firstname','middlename','lastname','generation'],
1875: $udom,$uname);
1876: my $name=&Apache::lonnet::format_name($names{'firstname'},
1877: $names{'middlename'},
1878: $names{'lastname'},
1879: $names{'generation'},$first);
1880: $name=~s/^\s+//;
1881: $name=~s/\s+$//;
1882: $name=~s/\s+/ /g;
1883: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1884: return $name;
1885: }
1886:
1887: # -------------------------------------------------------------------- Nickname
1888: =pod
1889:
1890: =item * nickname($uname,$udom)
1891:
1892: Gets a users name and returns it as a string as
1893:
1894: ""nickname""
1895:
1896: if the user has a nickname or
1897:
1898: "first middle last generation"
1899:
1900: if the user does not
1901:
1902: =cut
1903:
1904: sub nickname {
1905: my ($uname,$udom)=@_;
1906: my %names;
1907: if ($uname eq $env{'user.name'} &&
1908: $udom eq $env{'user.domain'}) {
1909: %names=('nickname' => $env{'environment.nickname'} ,
1910: 'firstname' => $env{'environment.firstname'} ,
1911: 'middlename' => $env{'environment.middlename'},
1912: 'lastname' => $env{'environment.lastname'} ,
1913: 'generation' => $env{'environment.generation'});
1914: } else {
1915: %names=&Apache::lonnet::get('environment',
1916: ['nickname','firstname','middlename',
1917: 'lastname','generation'],$udom,$uname);
1918: }
1919: my $name=$names{'nickname'};
1920: if ($name) {
1921: $name='"'.$name.'"';
1922: } else {
1923: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1924: $names{'lastname'}.' '.$names{'generation'};
1925: $name=~s/\s+$//;
1926: $name=~s/\s+/ /g;
1927: }
1928: return $name;
1929: }
1930:
1931:
1932: # ------------------------------------------------------------------ Screenname
1933:
1934: =pod
1935:
1936: =item * screenname($uname,$udom)
1937:
1938: Gets a users screenname and returns it as a string
1939:
1940: =cut
1941:
1942: sub screenname {
1943: my ($uname,$udom)=@_;
1944: if ($uname eq $env{'user.name'} &&
1945: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
1946: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1947: return $names{'screenname'};
1948: }
1949:
1950:
1951: # ------------------------------------------------------------- Message Wrapper
1952:
1953: sub messagewrapper {
1954: my ($link,$username,$domain)=@_;
1955: return
1956: '<a href="/adm/email?compose=individual&'.
1957: 'recname='.$username.'&recdom='.$domain.'" '.
1958: 'title="'.&mt('Send message').'">'.$link.'</a>';
1959: }
1960: # --------------------------------------------------------------- Notes Wrapper
1961:
1962: sub noteswrapper {
1963: my ($link,$un,$do)=@_;
1964: return
1965: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1966: }
1967: # ------------------------------------------------------------- Aboutme Wrapper
1968:
1969: sub aboutmewrapper {
1970: my ($link,$username,$domain,$target)=@_;
1971: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1972: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1973: }
1974:
1975: # ------------------------------------------------------------ Syllabus Wrapper
1976:
1977:
1978: sub syllabuswrapper {
1979: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1980: if ($fontcolor) {
1981: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1982: }
1983: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1984: }
1985:
1986: sub track_student_link {
1987: my ($linktext,$sname,$sdom,$target) = @_;
1988: my $link ="/adm/trackstudent";
1989: my $title = 'View recent activity';
1990: if (defined($sname) && $sname !~ /^\s*$/ &&
1991: defined($sdom) && $sdom !~ /^\s*$/) {
1992: $link .= "?selected_student=$sname:$sdom";
1993: $title .= ' of this student';
1994: }
1995: if (defined($target) && $target !~ /^\s*$/) {
1996: $target = qq{target="$target"};
1997: } else {
1998: $target = '';
1999: }
2000: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2001: }
2002:
2003:
2004:
2005: =pod
2006:
2007: =back
2008:
2009: =head1 Access .tab File Data
2010:
2011: =over 4
2012:
2013: =item * languageids()
2014:
2015: returns list of all language ids
2016:
2017: =cut
2018:
2019: sub languageids {
2020: return sort(keys(%language));
2021: }
2022:
2023: =pod
2024:
2025: =item * languagedescription()
2026:
2027: returns description of a specified language id
2028:
2029: =cut
2030:
2031: sub languagedescription {
2032: my $code=shift;
2033: return ($supported_language{$code}?'* ':'').
2034: $language{$code}.
2035: ($supported_language{$code}?' ('.&mt('interface available').')':'');
2036: }
2037:
2038: sub plainlanguagedescription {
2039: my $code=shift;
2040: return $language{$code};
2041: }
2042:
2043: sub supportedlanguagecode {
2044: my $code=shift;
2045: return $supported_language{$code};
2046: }
2047:
2048: =pod
2049:
2050: =item * copyrightids()
2051:
2052: returns list of all copyrights
2053:
2054: =cut
2055:
2056: sub copyrightids {
2057: return sort(keys(%cprtag));
2058: }
2059:
2060: =pod
2061:
2062: =item * copyrightdescription()
2063:
2064: returns description of a specified copyright id
2065:
2066: =cut
2067:
2068: sub copyrightdescription {
2069: return &mt($cprtag{shift(@_)});
2070: }
2071:
2072: =pod
2073:
2074: =item * source_copyrightids()
2075:
2076: returns list of all source copyrights
2077:
2078: =cut
2079:
2080: sub source_copyrightids {
2081: return sort(keys(%scprtag));
2082: }
2083:
2084: =pod
2085:
2086: =item * source_copyrightdescription()
2087:
2088: returns description of a specified source copyright id
2089:
2090: =cut
2091:
2092: sub source_copyrightdescription {
2093: return &mt($scprtag{shift(@_)});
2094: }
2095:
2096: =pod
2097:
2098: =item * filecategories()
2099:
2100: returns list of all file categories
2101:
2102: =cut
2103:
2104: sub filecategories {
2105: return sort(keys(%category_extensions));
2106: }
2107:
2108: =pod
2109:
2110: =item * filecategorytypes()
2111:
2112: returns list of file types belonging to a given file
2113: category
2114:
2115: =cut
2116:
2117: sub filecategorytypes {
2118: return @{$category_extensions{lc($_[0])}};
2119: }
2120:
2121: =pod
2122:
2123: =item * fileembstyle()
2124:
2125: returns embedding style for a specified file type
2126:
2127: =cut
2128:
2129: sub fileembstyle {
2130: return $fe{lc(shift(@_))};
2131: }
2132:
2133:
2134: sub filecategoryselect {
2135: my ($name,$value)=@_;
2136: return &select_form($value,$name,
2137: '' => &mt('Any category'),
2138: map { $_,$_ } sort(keys(%category_extensions)));
2139: }
2140:
2141: =pod
2142:
2143: =item * filedescription()
2144:
2145: returns description for a specified file type
2146:
2147: =cut
2148:
2149: sub filedescription {
2150: my $file_description = $fd{lc(shift())};
2151: $file_description =~ s:([\[\]]):~$1:g;
2152: return &mt($file_description);
2153: }
2154:
2155: =pod
2156:
2157: =item * filedescriptionex()
2158:
2159: returns description for a specified file type with
2160: extra formatting
2161:
2162: =cut
2163:
2164: sub filedescriptionex {
2165: my $ex=shift;
2166: my $file_description = $fd{lc($ex)};
2167: $file_description =~ s:([\[\]]):~$1:g;
2168: return '.'.$ex.' '.&mt($file_description);
2169: }
2170:
2171: # End of .tab access
2172: =pod
2173:
2174: =back
2175:
2176: =cut
2177:
2178: # ------------------------------------------------------------------ File Types
2179: sub fileextensions {
2180: return sort(keys(%fe));
2181: }
2182:
2183: # ----------------------------------------------------------- Display Languages
2184: # returns a hash with all desired display languages
2185: #
2186:
2187: sub display_languages {
2188: my %languages=();
2189: foreach (&preferred_languages()) {
2190: $languages{$_}=1;
2191: }
2192: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2193: if ($env{'form.displaylanguage'}) {
2194: foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
2195: $languages{$_}=1;
2196: }
2197: }
2198: return %languages;
2199: }
2200:
2201: sub preferred_languages {
2202: my @languages=();
2203: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
2204: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2205: $env{'course.'.$env{'request.course.id'}.'.languages'}));
2206: }
2207: if ($env{'environment.languages'}) {
2208: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
2209: }
2210: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2211: if ($browser) {
2212: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2213: }
2214: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
2215: @languages=(@languages,
2216: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
2217: }
2218: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
2219: @languages=(@languages,
2220: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
2221: }
2222: if ($Apache::lonnet::domain_lang_def{
2223: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2224: @languages=(@languages,
2225: $Apache::lonnet::domain_lang_def{
2226: $Apache::lonnet::perlvar{'lonDefDomain'}});
2227: }
2228: # turn "en-ca" into "en-ca,en"
2229: my @genlanguages;
2230: foreach (@languages) {
2231: unless ($_=~/\w/) { next; }
2232: push (@genlanguages,$_);
2233: if ($_=~/(\-|\_)/) {
2234: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2235: }
2236: }
2237: return @genlanguages;
2238: }
2239:
2240: ###############################################################
2241: ## Student Answer Attempts ##
2242: ###############################################################
2243:
2244: =pod
2245:
2246: =head1 Alternate Problem Views
2247:
2248: =over 4
2249:
2250: =item * get_previous_attempt($symb, $username, $domain, $course,
2251: $getattempt, $regexp, $gradesub)
2252:
2253: Return string with previous attempt on problem. Arguments:
2254:
2255: =over 4
2256:
2257: =item * $symb: Problem, including path
2258:
2259: =item * $username: username of the desired student
2260:
2261: =item * $domain: domain of the desired student
2262:
2263: =item * $course: Course ID
2264:
2265: =item * $getattempt: Leave blank for all attempts, otherwise put
2266: something
2267:
2268: =item * $regexp: if string matches this regexp, the string will be
2269: sent to $gradesub
2270:
2271: =item * $gradesub: routine that processes the string if it matches $regexp
2272:
2273: =back
2274:
2275: The output string is a table containing all desired attempts, if any.
2276:
2277: =cut
2278:
2279: sub get_previous_attempt {
2280: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2281: my $prevattempts='';
2282: no strict 'refs';
2283: if ($symb) {
2284: my (%returnhash)=
2285: &Apache::lonnet::restore($symb,$course,$domain,$username);
2286: if ($returnhash{'version'}) {
2287: my %lasthash=();
2288: my $version;
2289: for ($version=1;$version<=$returnhash{'version'};$version++) {
2290: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2291: $lasthash{$_}=$returnhash{$version.':'.$_};
2292: }
2293: }
2294: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2295: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2296: foreach (sort(keys %lasthash)) {
2297: my ($ign,@parts) = split(/\./,$_);
2298: if ($#parts > 0) {
2299: my $data=$parts[-1];
2300: pop(@parts);
2301: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2302: } else {
2303: if ($#parts == 0) {
2304: $prevattempts.='<th>'.$parts[0].'</th>';
2305: } else {
2306: $prevattempts.='<th>'.$ign.'</th>';
2307: }
2308: }
2309: }
2310: if ($getattempt eq '') {
2311: for ($version=1;$version<=$returnhash{'version'};$version++) {
2312: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2313: foreach (sort(keys %lasthash)) {
2314: my $value;
2315: if ($_ =~ /timestamp/) {
2316: $value=scalar(localtime($returnhash{$version.':'.$_}));
2317: } else {
2318: $value=$returnhash{$version.':'.$_};
2319: }
2320: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2321: }
2322: }
2323: }
2324: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2325: foreach (sort(keys %lasthash)) {
2326: my $value;
2327: if ($_ =~ /timestamp/) {
2328: $value=scalar(localtime($lasthash{$_}));
2329: } else {
2330: $value=$lasthash{$_};
2331: }
2332: $value=&Apache::lonnet::unescape($value);
2333: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2334: $prevattempts.='<td>'.$value.' </td>';
2335: }
2336: $prevattempts.='</tr></table></td></tr></table>';
2337: } else {
2338: $prevattempts='Nothing submitted - no attempts.';
2339: }
2340: } else {
2341: $prevattempts='No data.';
2342: }
2343: }
2344:
2345: sub relative_to_absolute {
2346: my ($url,$output)=@_;
2347: my $parser=HTML::TokeParser->new(\$output);
2348: my $token;
2349: my $thisdir=$url;
2350: my @rlinks=();
2351: while ($token=$parser->get_token) {
2352: if ($token->[0] eq 'S') {
2353: if ($token->[1] eq 'a') {
2354: if ($token->[2]->{'href'}) {
2355: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2356: }
2357: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2358: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2359: } elsif ($token->[1] eq 'base') {
2360: $thisdir=$token->[2]->{'href'};
2361: }
2362: }
2363: }
2364: $thisdir=~s-/[^/]*$--;
2365: foreach (@rlinks) {
2366: unless (($_=~/^http:\/\//i) ||
2367: ($_=~/^\//) ||
2368: ($_=~/^javascript:/i) ||
2369: ($_=~/^mailto:/i) ||
2370: ($_=~/^\#/)) {
2371: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2372: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2373: }
2374: }
2375: # -------------------------------------------------- Deal with Applet codebases
2376: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2377: return $output;
2378: }
2379:
2380: =pod
2381:
2382: =item * get_student_view
2383:
2384: show a snapshot of what student was looking at
2385:
2386: =cut
2387:
2388: sub get_student_view {
2389: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2390: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2391: my (%form);
2392: my @elements=('symb','courseid','domain','username');
2393: foreach my $element (@elements) {
2394: $form{'grade_'.$element}=eval '$'.$element #'
2395: }
2396: if (defined($moreenv)) {
2397: %form=(%form,%{$moreenv});
2398: }
2399: if (defined($target)) { $form{'grade_target'} = $target; }
2400: $feedurl=&Apache::lonnet::clutter($feedurl);
2401: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2402: $userview=~s/\<body[^\>]*\>//gi;
2403: $userview=~s/\<\/body\>//gi;
2404: $userview=~s/\<html\>//gi;
2405: $userview=~s/\<\/html\>//gi;
2406: $userview=~s/\<head\>//gi;
2407: $userview=~s/\<\/head\>//gi;
2408: $userview=~s/action\s*\=/would_be_action\=/gi;
2409: $userview=&relative_to_absolute($feedurl,$userview);
2410: return $userview;
2411: }
2412:
2413: =pod
2414:
2415: =item * get_student_answers()
2416:
2417: show a snapshot of how student was answering problem
2418:
2419: =cut
2420:
2421: sub get_student_answers {
2422: my ($symb,$username,$domain,$courseid,%form) = @_;
2423: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2424: my (%moreenv);
2425: my @elements=('symb','courseid','domain','username');
2426: foreach my $element (@elements) {
2427: $moreenv{'grade_'.$element}=eval '$'.$element #'
2428: }
2429: $moreenv{'grade_target'}='answer';
2430: %moreenv=(%form,%moreenv);
2431: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2432: return $userview;
2433: }
2434:
2435: =pod
2436:
2437: =item * &submlink()
2438:
2439: Inputs: $text $uname $udom $symb $target
2440:
2441: Returns: A link to grades.pm such as to see the SUBM view of a student
2442:
2443: =cut
2444:
2445: ###############################################
2446: sub submlink {
2447: my ($text,$uname,$udom,$symb,$target)=@_;
2448: if (!($uname && $udom)) {
2449: (my $cursymb, my $courseid,$udom,$uname)=
2450: &Apache::lonxml::whichuser($symb);
2451: if (!$symb) { $symb=$cursymb; }
2452: }
2453: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2454: $symb=&Apache::lonnet::escape($symb);
2455: if ($target) { $target="target=\"$target\""; }
2456: return '<a href="/adm/grades?&command=submission&'.
2457: 'symb='.$symb.'&student='.$uname.
2458: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2459: }
2460: ##############################################
2461:
2462: =pod
2463:
2464: =item * &pgrdlink()
2465:
2466: Inputs: $text $uname $udom $symb $target
2467:
2468: Returns: A link to grades.pm such as to see the PGRD view of a student
2469:
2470: =cut
2471:
2472: ###############################################
2473: sub pgrdlink {
2474: my $link=&submlink(@_);
2475: $link=~s/(&command=submission)/$1&showgrading=yes/;
2476: return $link;
2477: }
2478: ##############################################
2479:
2480: =pod
2481:
2482: =item * &pprmlink()
2483:
2484: Inputs: $text $uname $udom $symb $target
2485:
2486: Returns: A link to parmset.pm such as to see the PPRM view of a
2487: student andn resource
2488:
2489: =cut
2490:
2491: ###############################################
2492: sub pprmlink {
2493: my ($text,$uname,$udom,$symb,$target)=@_;
2494: if (!($uname && $udom)) {
2495: (my $cursymb, my $courseid,$udom,$uname)=
2496: &Apache::lonxml::whichuser($symb);
2497: if (!$symb) { $symb=$cursymb; }
2498: }
2499: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2500: $symb=&Apache::lonnet::escape($symb);
2501: if ($target) { $target="target=\"$target\""; }
2502: return '<a href="/adm/parmset?&command=set&'.
2503: 'symb='.$symb.'&uname='.$uname.
2504: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2505: }
2506: ##############################################
2507:
2508: =pod
2509:
2510: =back
2511:
2512: =cut
2513:
2514: ###############################################
2515:
2516:
2517: sub timehash {
2518: my @ltime=localtime(shift);
2519: return ( 'seconds' => $ltime[0],
2520: 'minutes' => $ltime[1],
2521: 'hours' => $ltime[2],
2522: 'day' => $ltime[3],
2523: 'month' => $ltime[4]+1,
2524: 'year' => $ltime[5]+1900,
2525: 'weekday' => $ltime[6],
2526: 'dayyear' => $ltime[7]+1,
2527: 'dlsav' => $ltime[8] );
2528: }
2529:
2530: sub maketime {
2531: my %th=@_;
2532: return POSIX::mktime(
2533: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2534: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2535: }
2536:
2537: #########################################
2538:
2539: sub findallcourses {
2540: my %courses=();
2541: my $now=time;
2542: foreach (keys %env) {
2543: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2544: my ($starttime,$endtime)=$env{$_};
2545: my $active=1;
2546: if ($starttime) {
2547: if ($now<$starttime) { $active=0; }
2548: }
2549: if ($endtime) {
2550: if ($now>$endtime) { $active=0; }
2551: }
2552: if ($active) { $courses{$1.'_'.$2}=1; }
2553: }
2554: }
2555: return keys %courses;
2556: }
2557:
2558: ###############################################
2559: ###############################################
2560:
2561: =pod
2562:
2563: =head1 Domain Template Functions
2564:
2565: =over 4
2566:
2567: =item * &determinedomain()
2568:
2569: Inputs: $domain (usually will be undef)
2570:
2571: Returns: Determines which domain should be used for designs
2572:
2573: =cut
2574:
2575: ###############################################
2576: sub determinedomain {
2577: my $domain=shift;
2578: if (! $domain) {
2579: # Determine domain if we have not been given one
2580: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2581: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2582: if ($env{'request.role.domain'}) {
2583: $domain=$env{'request.role.domain'};
2584: }
2585: }
2586: return $domain;
2587: }
2588: ###############################################
2589: =pod
2590:
2591: =item * &domainlogo()
2592:
2593: Inputs: $domain (usually will be undef)
2594:
2595: Returns: A link to a domain logo, if the domain logo exists.
2596: If the domain logo does not exist, a description of the domain.
2597:
2598: =cut
2599:
2600: ###############################################
2601: sub domainlogo {
2602: my $domain = &determinedomain(shift);
2603: # See if there is a logo
2604: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2605: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2606: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2607: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2608: return $Apache::lonnet::domaindescription{$domain};
2609: } else {
2610: return '';
2611: }
2612: }
2613: ##############################################
2614:
2615: =pod
2616:
2617: =item * &designparm()
2618:
2619: Inputs: $which parameter; $domain (usually will be undef)
2620:
2621: Returns: value of designparamter $which
2622:
2623: =cut
2624:
2625: ##############################################
2626: sub designparm {
2627: my ($which,$domain)=@_;
2628: if ($env{'browser.blackwhite'} eq 'on') {
2629: if ($which=~/\.(font|alink|vlink|link)$/) {
2630: return '#000000';
2631: }
2632: if ($which=~/\.(pgbg|sidebg)$/) {
2633: return '#FFFFFF';
2634: }
2635: if ($which=~/\.tabbg$/) {
2636: return '#CCCCCC';
2637: }
2638: }
2639: if ($env{'environment.color.'.$which}) {
2640: return $env{'environment.color.'.$which};
2641: }
2642: $domain=&determinedomain($domain);
2643: if ($designhash{$domain.'.'.$which}) {
2644: return $designhash{$domain.'.'.$which};
2645: } else {
2646: return $designhash{'default.'.$which};
2647: }
2648: }
2649:
2650: ###############################################
2651: ###############################################
2652:
2653: =pod
2654:
2655: =back
2656:
2657: =head1 HTTP Helpers
2658:
2659: =over 4
2660:
2661: =item * &bodytag()
2662:
2663: Returns a uniform header for LON-CAPA web pages.
2664:
2665: Inputs:
2666:
2667: =over 4
2668:
2669: =item * $title, A title to be displayed on the page.
2670:
2671: =item * $function, the current role (can be undef).
2672:
2673: =item * $addentries, extra parameters for the <body> tag.
2674:
2675: =item * $bodyonly, if defined, only return the <body> tag.
2676:
2677: =item * $domain, if defined, force a given domain.
2678:
2679: =item * $forcereg, if page should register as content page (relevant for
2680: text interface only)
2681:
2682: =back
2683:
2684: Returns: A uniform header for LON-CAPA web pages.
2685: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2686: If $bodyonly is undef or zero, an html string containing a <body> tag and
2687: other decorations will be returned.
2688:
2689: =cut
2690:
2691: sub bodytag {
2692: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle)=@_;
2693: $title=&mt($title);
2694: $function = &get_users_function() if (!$function);
2695: my $img=&designparm($function.'.img',$domain);
2696: my $pgbg=&designparm($function.'.pgbg',$domain);
2697: my $tabbg=&designparm($function.'.tabbg',$domain);
2698: my $font=&designparm($function.'.font',$domain);
2699: my $link=&designparm($function.'.link',$domain);
2700: my $alink=&designparm($function.'.alink',$domain);
2701: my $vlink=&designparm($function.'.vlink',$domain);
2702: my $sidebg=&designparm($function.'.sidebg',$domain);
2703: # Accessibility font enhance
2704: unless ($addentries) { $addentries=''; }
2705: my $addstyle='';
2706: if ($env{'browser.fontenhance'} eq 'on') {
2707: $addstyle=' font-size: x-large;';
2708: }
2709: # role and realm
2710: my ($role,$realm)
2711: =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
2712: # realm
2713: if ($env{'request.course.id'}) {
2714: $realm=
2715: $env{'course.'.$env{'request.course.id'}.'.description'};
2716: }
2717: unless ($realm) { $realm=' '; }
2718: # Set messages
2719: my $messages=&domainlogo($domain);
2720: # Port for miniserver
2721: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2722: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2723: # construct main body tag
2724: my $bodytag = <<END;
2725: <style type="text/css">
2726: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2727: a:focus { color: red; background: yellow }
2728: </style>
2729: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2730: style="margin-top: 0px;$addstyle" $addentries>
2731: END
2732: if ($env{'environment.texengine'} eq 'jsMath') {
2733: $bodytag.='<script type="text/javascript">
2734: function NoFontMessage () {}
2735: </script>'."\n".
2736: '<script src="/adm/jsMath/jsMath.js"></script>'."\n";
2737: }
2738:
2739: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2740: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2741: if ($bodyonly) {
2742: return $bodytag;
2743: } elsif ($env{'browser.interface'} eq 'textual') {
2744: # Accessibility
2745:
2746: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2747: $forcereg).
2748: '<h1>LON-CAPA: '.$title.'</h1>';
2749: } elsif ($env{'environment.remote'} eq 'off') {
2750: # No Remote
2751: my $roleinfo=(<<ENDROLE);
2752: <td bgcolor="$tabbg" align="right">
2753: <font size="2" face="Arial, Helvetica, sans-serif">
2754: $env{'environment.firstname'}
2755: $env{'environment.middlename'}
2756: $env{'environment.lastname'}
2757: $env{'environment.generation'}
2758: </font>
2759: <br />
2760: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2761: <br />
2762: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2763: </td>
2764: ENDROLE
2765: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
2766: $font.'"><b>'.$title.'</b></font>';
2767: if ($customtitle) {
2768: $titleinfo = $customtitle;
2769: }
2770:
2771: if ($env{'request.state'} eq 'construct') {
2772: my ($uname,$thisdisfn)=
2773: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
2774: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2775: $formaction=~s/\/+/\//g;
2776: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2777: my $parentpath = '';
2778: my $lastitem = '';
2779: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
2780: $parentpath = $1;
2781: $lastitem = $2;
2782: } else {
2783: $lastitem = $thisdisfn;
2784: }
2785: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2786: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2787: '<form name="dirs" method="post" action="'.$formaction
2788: .'" target="_top"><tt><b>'
2789: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
2790: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2791: .'</form>'
2792: .&Apache::lonmenu::constspaceform();
2793:
2794: }
2795: $forcereg=1;
2796: }
2797: my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2798: 'cellspacing="3" cellpadding="3">'.
2799: '<tr><td rowspan="3" bgcolor="'.$tabbg.'">'.
2800: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
2801: if ($env{'request.state'} eq 'construct') {
2802: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
2803: } else {
2804: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
2805: $titletable;
2806: }
2807: return $bodytag;
2808: }
2809:
2810: #
2811: # Top frame rendering, Remote is up
2812: #
2813: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2814: if ($customtitle) {
2815: $titleinfo = $customtitle;
2816: }
2817: #
2818: # Extra info if you are the DC
2819: my $dc_info = '';
2820: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2821: $env{'course.'.$env{'request.course.id'}.
2822: '.domain'}.'/'})) {
2823: my $cid = $env{'request.course.id'};
2824: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
2825: $dc_info = '('.$dc_info.')';
2826: }
2827: #
2828: return(<<ENDBODY);
2829: $bodytag
2830: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2831: <tr><td bgcolor="$sidebg">
2832: $upperleft</td>
2833: <td bgcolor="$sidebg" align="right">$messages </td>
2834: </tr>
2835: <tr>
2836: <td rowspan="3" bgcolor="$tabbg">
2837: $titleinfo $dc_info
2838: </td><td bgcolor="$tabbg" align="right">
2839: <font size="2" face="Arial, Helvetica, sans-serif">
2840: $env{'environment.firstname'}
2841: $env{'environment.middlename'}
2842: $env{'environment.lastname'}
2843: $env{'environment.generation'}
2844: </font>
2845: </td>
2846: </tr>
2847: <tr><td bgcolor="$tabbg" align="right">
2848: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2849: </td></tr>
2850: <tr>
2851: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2852: </table><br />
2853: ENDBODY
2854: }
2855:
2856: ###############################################
2857: ###############################################
2858:
2859: =pod
2860:
2861: =back
2862:
2863: =head1 HTTP Helpers
2864:
2865: =over 4
2866:
2867: =item * &endbodytag()
2868:
2869: Returns a uniform footer for LON-CAPA web pages.
2870:
2871: Inputs:
2872:
2873: =over 4
2874:
2875: =back
2876:
2877: Returns: A uniform footer for LON-CAPA web pages.
2878:
2879: =cut
2880:
2881: sub endbodytag {
2882: my $endbodytag='</body>';
2883: if ($env{'environment.texengine'} eq 'jsMath') {
2884: $endbodytag='<script type="text/javascript">jsMath.Process()</script>'.
2885: "\n".$endbodytag;
2886: }
2887: return $endbodytag;
2888: }
2889:
2890: ###############################################
2891:
2892: =pod
2893:
2894: =item get_users_function
2895:
2896: Used by &bodytag to determine the current users primary role.
2897: Returns either 'student','coordinator','admin', or 'author'.
2898:
2899: =cut
2900:
2901: ###############################################
2902: sub get_users_function {
2903: my $function = 'student';
2904: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
2905: $function='coordinator';
2906: }
2907: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
2908: $function='admin';
2909: }
2910: if (($env{'request.role'}=~/^(au|ca)/) ||
2911: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2912: $function='author';
2913: }
2914: return $function;
2915: }
2916:
2917: ###############################################
2918:
2919: =pod
2920:
2921: =item get_sections
2922:
2923: Determines all the sections for a course including
2924: sections with students and sections containing other roles.
2925: Incoming parameters: domain, course number, reference to
2926: section hash (keys to be section/group IDs), reference to
2927: array containing roles for which sections should be gathered
2928: (optional). If the fourth argument is undefined, sections
2929: are gathered for any role.
2930:
2931: Returns number of sections.
2932:
2933: =cut
2934:
2935: ###############################################
2936: sub get_sections {
2937: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
2938: if (!($cdom && $cnum)) { return 0; }
2939: my $cid = $cdom.'_'.$cnum;
2940: my $numsections = 0;
2941:
2942: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
2943: my ($classlist) = &Apache::loncoursedata::get_classlist($cid,$cdom,$cnum);
2944: my $sec_index = &Apache::loncoursedata::CL_SECTION();
2945: my $status_index = &Apache::loncoursedata::CL_STATUS();
2946: while (my ($student,$data) = each %$classlist) {
2947: my ($section,$status) = ($data->[$sec_index],
2948: $data->[$status_index]);
2949: unless ($section eq '-1' || $section =~ /^\s*$/) {
2950: if (!defined($$sectioncount{$section})) { $numsections++; }
2951: $$sectioncount{$section}++;
2952: }
2953: }
2954: }
2955: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
2956: foreach my $user (sort(keys(%courseroles))) {
2957: if ($user !~ /^(\w{2})/) { next; }
2958: my ($role) = ($user =~ /^(\w{2})/);
2959: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
2960: my $section;
2961: if ($role eq 'cr' &&
2962: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
2963: $section=$1;
2964: }
2965: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
2966: if (!defined($section) || $section eq '-1') { next; }
2967: if (!defined($$sectioncount{$section})) { $numsections++; }
2968: $$sectioncount{$section}++;
2969: }
2970: return $numsections;
2971: }
2972:
2973:
2974: sub get_posted_cgi {
2975: my $r=shift;
2976:
2977: my $buffer;
2978: if ($r->header_in('Content-length')) {
2979: $r->read($buffer,$r->header_in('Content-length'),0);
2980: }
2981: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2982: my @pairs=split(/&/,$buffer);
2983: my $pair;
2984: foreach $pair (@pairs) {
2985: my ($name,$value) = split(/=/,$pair);
2986: $value =~ tr/+/ /;
2987: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2988: $name =~ tr/+/ /;
2989: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2990: &add_to_env("form.$name",$value);
2991: }
2992: } else {
2993: my $contentsep=$1;
2994: my @lines = split (/\n/,$buffer);
2995: my $name='';
2996: my $value='';
2997: my $fname='';
2998: my $fmime='';
2999: my $i;
3000: for ($i=0;$i<=$#lines;$i++) {
3001: if ($lines[$i]=~/^$contentsep/) {
3002: if ($name) {
3003: chomp($value);
3004: if ($fname) {
3005: $env{"form.$name.filename"}=$fname;
3006: $env{"form.$name.mimetype"}=$fmime;
3007: } else {
3008: $value=~s/\s+$//s;
3009: }
3010: &add_to_env("form.$name",$value);
3011: }
3012: if ($i<$#lines) {
3013: $i++;
3014: $lines[$i]=~
3015: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
3016: $name=$1;
3017: $value='';
3018: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
3019: $fname=$1;
3020: if
3021: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
3022: $fmime=$1;
3023: $i++;
3024: } else {
3025: $fmime='';
3026: }
3027: } else {
3028: $fname='';
3029: $fmime='';
3030: }
3031: $i++;
3032: }
3033: } else {
3034: $value.=$lines[$i]."\n";
3035: }
3036: }
3037: }
3038: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
3039: $r->method_number(M_GET);
3040: $r->method('GET');
3041: $r->headers_in->unset('Content-length');
3042: }
3043:
3044: =pod
3045:
3046: =item * get_unprocessed_cgi($query,$possible_names)
3047:
3048: Modify the %env hash to contain unprocessed CGI form parameters held in
3049: $query. The parameters listed in $possible_names (an array reference),
3050: will be set in $env{'form.name'} if they do not already exist.
3051:
3052: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
3053: $possible_names is an ref to an array of form element names. As an example:
3054: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
3055: will result in $env{'form.uname'} and $env{'form.udom'} being set.
3056:
3057: =cut
3058:
3059: sub get_unprocessed_cgi {
3060: my ($query,$possible_names)= @_;
3061: # $Apache::lonxml::debug=1;
3062: foreach (split(/&/,$query)) {
3063: my ($name, $value) = split(/=/,$_);
3064: $name = &Apache::lonnet::unescape($name);
3065: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
3066: $value =~ tr/+/ /;
3067: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3068: &Apache::lonxml::debug("Seting :$name: to :$value:");
3069: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
3070: }
3071: }
3072: }
3073:
3074: =pod
3075:
3076: =item * cacheheader()
3077:
3078: returns cache-controlling header code
3079:
3080: =cut
3081:
3082: sub cacheheader {
3083: unless ($env{'request.method'} eq 'GET') { return ''; }
3084: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
3085: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
3086: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
3087: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
3088: return $output;
3089: }
3090:
3091: =pod
3092:
3093: =item * no_cache($r)
3094:
3095: specifies header code to not have cache
3096:
3097: =cut
3098:
3099: sub no_cache {
3100: my ($r) = @_;
3101: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
3102: $env{'request.method'} ne 'GET') { return ''; }
3103: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
3104: $r->no_cache(1);
3105: $r->header_out("Expires" => $date);
3106: $r->header_out("Pragma" => "no-cache");
3107: }
3108:
3109: sub content_type {
3110: my ($r,$type,$charset) = @_;
3111: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
3112: unless ($charset) {
3113: $charset=&Apache::lonlocal::current_encoding;
3114: }
3115: if ($charset) { $type.='; charset='.$charset; }
3116: if ($r) {
3117: $r->content_type($type);
3118: } else {
3119: print("Content-type: $type\n\n");
3120: }
3121: }
3122:
3123: =pod
3124:
3125: =item * add_to_env($name,$value)
3126:
3127: adds $name to the %env hash with value
3128: $value, if $name already exists, the entry is converted to an array
3129: reference and $value is added to the array.
3130:
3131: =cut
3132:
3133: sub add_to_env {
3134: my ($name,$value)=@_;
3135: if (defined($env{$name})) {
3136: if (ref($env{$name})) {
3137: #already have multiple values
3138: push(@{ $env{$name} },$value);
3139: } else {
3140: #first time seeing multiple values, convert hash entry to an arrayref
3141: my $first=$env{$name};
3142: undef($env{$name});
3143: push(@{ $env{$name} },$first,$value);
3144: }
3145: } else {
3146: $env{$name}=$value;
3147: }
3148: }
3149:
3150: =pod
3151:
3152: =item * get_env_multiple($name)
3153:
3154: gets $name from the %env hash, it seemlessly handles the cases where multiple
3155: values may be defined and end up as an array ref.
3156:
3157: returns an array of values
3158:
3159: =cut
3160:
3161: sub get_env_multiple {
3162: my ($name) = @_;
3163: my @values;
3164: if (defined($env{$name})) {
3165: # exists is it an array
3166: if (ref($env{$name})) {
3167: @values=@{ $env{$name} };
3168: } else {
3169: $values[0]=$env{$name};
3170: }
3171: }
3172: return(@values);
3173: }
3174:
3175:
3176: =pod
3177:
3178: =back
3179:
3180: =head1 CSV Upload/Handling functions
3181:
3182: =over 4
3183:
3184: =item * upfile_store($r)
3185:
3186: Store uploaded file, $r should be the HTTP Request object,
3187: needs $env{'form.upfile'}
3188: returns $datatoken to be put into hidden field
3189:
3190: =cut
3191:
3192: sub upfile_store {
3193: my $r=shift;
3194: $env{'form.upfile'}=~s/\r/\n/gs;
3195: $env{'form.upfile'}=~s/\f/\n/gs;
3196: $env{'form.upfile'}=~s/\n+/\n/gs;
3197: $env{'form.upfile'}=~s/\n+$//gs;
3198:
3199: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
3200: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
3201: {
3202: my $datafile = $r->dir_config('lonDaemons').
3203: '/tmp/'.$datatoken.'.tmp';
3204: if ( open(my $fh,">$datafile") ) {
3205: print $fh $env{'form.upfile'};
3206: close($fh);
3207: }
3208: }
3209: return $datatoken;
3210: }
3211:
3212: =pod
3213:
3214: =item * load_tmp_file($r)
3215:
3216: Load uploaded file from tmp, $r should be the HTTP Request object,
3217: needs $env{'form.datatoken'},
3218: sets $env{'form.upfile'} to the contents of the file
3219:
3220: =cut
3221:
3222: sub load_tmp_file {
3223: my $r=shift;
3224: my @studentdata=();
3225: {
3226: my $studentfile = $r->dir_config('lonDaemons').
3227: '/tmp/'.$env{'form.datatoken'}.'.tmp';
3228: if ( open(my $fh,"<$studentfile") ) {
3229: @studentdata=<$fh>;
3230: close($fh);
3231: }
3232: }
3233: $env{'form.upfile'}=join('',@studentdata);
3234: }
3235:
3236: =pod
3237:
3238: =item * upfile_record_sep()
3239:
3240: Separate uploaded file into records
3241: returns array of records,
3242: needs $env{'form.upfile'} and $env{'form.upfiletype'}
3243:
3244: =cut
3245:
3246: sub upfile_record_sep {
3247: if ($env{'form.upfiletype'} eq 'xml') {
3248: } else {
3249: my @records;
3250: foreach my $line (split(/\n/,$env{'form.upfile'})) {
3251: if ($line=~/^\s*$/) { next; }
3252: push(@records,$line);
3253: }
3254: return @records;
3255: }
3256: }
3257:
3258: =pod
3259:
3260: =item * record_sep($record)
3261:
3262: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
3263:
3264: =cut
3265:
3266: sub record_sep {
3267: my $record=shift;
3268: my %components=();
3269: if ($env{'form.upfiletype'} eq 'xml') {
3270: } elsif ($env{'form.upfiletype'} eq 'space') {
3271: my $i=0;
3272: foreach (split(/\s+/,$record)) {
3273: my $field=$_;
3274: $field=~s/^(\"|\')//;
3275: $field=~s/(\"|\')$//;
3276: $components{$i}=$field;
3277: $i++;
3278: }
3279: } elsif ($env{'form.upfiletype'} eq 'tab') {
3280: my $i=0;
3281: foreach (split(/\t/,$record)) {
3282: my $field=$_;
3283: $field=~s/^(\"|\')//;
3284: $field=~s/(\"|\')$//;
3285: $components{$i}=$field;
3286: $i++;
3287: }
3288: } else {
3289: my @allfields=split(/\,/,$record);
3290: my $i=0;
3291: my $j;
3292: for ($j=0;$j<=$#allfields;$j++) {
3293: my $field=$allfields[$j];
3294: if ($field=~/^\s*(\"|\')/) {
3295: my $delimiter=$1;
3296: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
3297: $j++;
3298: $field.=','.$allfields[$j];
3299: }
3300: $field=~s/^\s*$delimiter//;
3301: $field=~s/$delimiter\s*$//;
3302: }
3303: $components{$i}=$field;
3304: $i++;
3305: }
3306: }
3307: return %components;
3308: }
3309:
3310: ######################################################
3311: ######################################################
3312:
3313: =pod
3314:
3315: =item * upfile_select_html()
3316:
3317: Return HTML code to select a file from the users machine and specify
3318: the file type.
3319:
3320: =cut
3321:
3322: ######################################################
3323: ######################################################
3324: sub upfile_select_html {
3325: my %Types = (
3326: csv => &mt('CSV (comma separated values, spreadsheet)'),
3327: space => &mt('Space separated'),
3328: tab => &mt('Tabulator separated'),
3329: # xml => &mt('HTML/XML'),
3330: );
3331: my $Str = '<input type="file" name="upfile" size="50" />'.
3332: '<br />Type: <select name="upfiletype">';
3333: foreach my $type (sort(keys(%Types))) {
3334: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
3335: }
3336: $Str .= "</select>\n";
3337: return $Str;
3338: }
3339:
3340: ######################################################
3341: ######################################################
3342:
3343: =pod
3344:
3345: =item * csv_print_samples($r,$records)
3346:
3347: Prints a table of sample values from each column uploaded $r is an
3348: Apache Request ref, $records is an arrayref from
3349: &Apache::loncommon::upfile_record_sep
3350:
3351: =cut
3352:
3353: ######################################################
3354: ######################################################
3355: sub csv_print_samples {
3356: my ($r,$records) = @_;
3357: my (%sone,%stwo,%sthree);
3358: %sone=&record_sep($$records[0]);
3359: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3360: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3361: #
3362: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3363: foreach (sort({$a <=> $b} keys(%sone))) {
3364: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
3365: $r->print('</tr>');
3366: foreach my $hash (\%sone,\%stwo,\%sthree) {
3367: $r->print('<tr>');
3368: foreach (sort({$a <=> $b} keys(%sone))) {
3369: $r->print('<td>');
3370: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3371: $r->print('</td>');
3372: }
3373: $r->print('</tr>');
3374: }
3375: $r->print('</tr></table><br />'."\n");
3376: }
3377:
3378: ######################################################
3379: ######################################################
3380:
3381: =pod
3382:
3383: =item * csv_print_select_table($r,$records,$d)
3384:
3385: Prints a table to create associations between values and table columns.
3386:
3387: $r is an Apache Request ref,
3388: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3389: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3390:
3391: =cut
3392:
3393: ######################################################
3394: ######################################################
3395: sub csv_print_select_table {
3396: my ($r,$records,$d) = @_;
3397: my $i=0;my %sone;
3398: %sone=&record_sep($$records[0]);
3399: $r->print(&mt('Associate columns with student attributes.')."\n".
3400: '<table border="2"><tr>'.
3401: '<th>'.&mt('Attribute').'</th>'.
3402: '<th>'.&mt('Column').'</th></tr>'."\n");
3403: foreach (@$d) {
3404: my ($value,$display,$defaultcol)=@{ $_ };
3405: $r->print('<tr><td>'.$display.'</td>');
3406:
3407: $r->print('<td><select name=f'.$i.
3408: ' onchange="javascript:flip(this.form,'.$i.');">');
3409: $r->print('<option value="none"></option>');
3410: foreach (sort({$a <=> $b} keys(%sone))) {
3411: $r->print('<option value="'.$_.'"'.
3412: ($_ eq $defaultcol ? ' selected="selected" ' : '').
3413: '>Column '.($_+1).'</option>');
3414: }
3415: $r->print('</select></td></tr>'."\n");
3416: $i++;
3417: }
3418: $i--;
3419: return $i;
3420: }
3421:
3422: ######################################################
3423: ######################################################
3424:
3425: =pod
3426:
3427: =item * csv_samples_select_table($r,$records,$d)
3428:
3429: Prints a table of sample values from the upload and can make associate samples to internal names.
3430:
3431: $r is an Apache Request ref,
3432: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3433: $d is an array of 2 element arrays (internal name, displayed name)
3434:
3435: =cut
3436:
3437: ######################################################
3438: ######################################################
3439: sub csv_samples_select_table {
3440: my ($r,$records,$d) = @_;
3441: my %sone; my %stwo; my %sthree;
3442: my $i=0;
3443: #
3444: $r->print('<table border=2><tr><th>'.
3445: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3446: %sone=&record_sep($$records[0]);
3447: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3448: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3449: #
3450: foreach (sort keys %sone) {
3451: $r->print('<tr><td><select name="f'.$i.'"'.
3452: ' onchange="javascript:flip(this.form,'.$i.');">');
3453: foreach (@$d) {
3454: my ($value,$display,$defaultcol)=@{ $_ };
3455: $r->print('<option value="'.$value.'"'.
3456: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
3457: $display.'</option>');
3458: }
3459: $r->print('</select></td><td>');
3460: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3461: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3462: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3463: $r->print('</td></tr>');
3464: $i++;
3465: }
3466: $i--;
3467: return($i);
3468: }
3469:
3470: ######################################################
3471: ######################################################
3472:
3473: =pod
3474:
3475: =item clean_excel_name($name)
3476:
3477: Returns a replacement for $name which does not contain any illegal characters.
3478:
3479: =cut
3480:
3481: ######################################################
3482: ######################################################
3483: sub clean_excel_name {
3484: my ($name) = @_;
3485: $name =~ s/[:\*\?\/\\]//g;
3486: if (length($name) > 31) {
3487: $name = substr($name,0,31);
3488: }
3489: return $name;
3490: }
3491:
3492: =pod
3493:
3494: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3495:
3496: Returns either 1 or undef
3497:
3498: 1 if the part is to be hidden, undef if it is to be shown
3499:
3500: Arguments are:
3501:
3502: $id the id of the part to be checked
3503: $symb, optional the symb of the resource to check
3504: $udom, optional the domain of the user to check for
3505: $uname, optional the username of the user to check for
3506:
3507: =cut
3508:
3509: sub check_if_partid_hidden {
3510: my ($id,$symb,$udom,$uname) = @_;
3511: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3512: $symb,$udom,$uname);
3513: my $truth=1;
3514: #if the string starts with !, then the list is the list to show not hide
3515: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3516: my @hiddenlist=split(/,/,$hiddenparts);
3517: foreach my $checkid (@hiddenlist) {
3518: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3519: }
3520: return !$truth;
3521: }
3522:
3523:
3524: ############################################################
3525: ############################################################
3526:
3527: =pod
3528:
3529: =back
3530:
3531: =head1 cgi-bin script and graphing routines
3532:
3533: =over 4
3534:
3535: =item get_cgi_id
3536:
3537: Inputs: none
3538:
3539: Returns an id which can be used to pass environment variables
3540: to various cgi-bin scripts. These environment variables will
3541: be removed from the users environment after a given time by
3542: the routine &Apache::lonnet::transfer_profile_to_env.
3543:
3544: =cut
3545:
3546: ############################################################
3547: ############################################################
3548: my $uniq=0;
3549: sub get_cgi_id {
3550: $uniq=($uniq+1)%100000;
3551: return (time.'_'.$uniq);
3552: }
3553:
3554: ############################################################
3555: ############################################################
3556:
3557: =pod
3558:
3559: =item DrawBarGraph
3560:
3561: Facilitates the plotting of data in a (stacked) bar graph.
3562: Puts plot definition data into the users environment in order for
3563: graph.png to plot it. Returns an <img> tag for the plot.
3564: The bars on the plot are labeled '1','2',...,'n'.
3565:
3566: Inputs:
3567:
3568: =over 4
3569:
3570: =item $Title: string, the title of the plot
3571:
3572: =item $xlabel: string, text describing the X-axis of the plot
3573:
3574: =item $ylabel: string, text describing the Y-axis of the plot
3575:
3576: =item $Max: scalar, the maximum Y value to use in the plot
3577: If $Max is < any data point, the graph will not be rendered.
3578:
3579: =item $colors: array ref holding the colors to be used for the data sets when
3580: they are plotted. If undefined, default values will be used.
3581:
3582: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3583:
3584: =item @Values: An array of array references. Each array reference holds data
3585: to be plotted in a stacked bar chart.
3586:
3587: =item If the final element of @Values is a hash reference the key/value
3588: pairs will be added to the graph definition.
3589:
3590: =back
3591:
3592: Returns:
3593:
3594: An <img> tag which references graph.png and the appropriate identifying
3595: information for the plot.
3596:
3597: =cut
3598:
3599: ############################################################
3600: ############################################################
3601: sub DrawBarGraph {
3602: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3603: #
3604: if (! defined($colors)) {
3605: $colors = ['#33ff00',
3606: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3607: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3608: ];
3609: }
3610: my $extra_settings = {};
3611: if (ref($Values[-1]) eq 'HASH') {
3612: $extra_settings = pop(@Values);
3613: }
3614: #
3615: my $identifier = &get_cgi_id();
3616: my $id = 'cgi.'.$identifier;
3617: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3618: return '';
3619: }
3620: #
3621: my @Labels;
3622: if (defined($labels)) {
3623: @Labels = @$labels;
3624: } else {
3625: for (my $i=0;$i<@{$Values[0]};$i++) {
3626: push (@Labels,$i+1);
3627: }
3628: }
3629: #
3630: my $NumBars = scalar(@{$Values[0]});
3631: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
3632: my %ValuesHash;
3633: my $NumSets=1;
3634: foreach my $array (@Values) {
3635: next if (! ref($array));
3636: $ValuesHash{$id.'.data.'.$NumSets++} =
3637: join(',',@$array);
3638: }
3639: #
3640: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3641: if ($NumBars < 3) {
3642: $width = 120+$NumBars*32;
3643: $xskip = 1;
3644: $bar_width = 30;
3645: } elsif ($NumBars < 5) {
3646: $width = 120+$NumBars*20;
3647: $xskip = 1;
3648: $bar_width = 20;
3649: } elsif ($NumBars < 10) {
3650: $width = 120+$NumBars*15;
3651: $xskip = 1;
3652: $bar_width = 15;
3653: } elsif ($NumBars <= 25) {
3654: $width = 120+$NumBars*11;
3655: $xskip = 5;
3656: $bar_width = 8;
3657: } elsif ($NumBars <= 50) {
3658: $width = 120+$NumBars*8;
3659: $xskip = 5;
3660: $bar_width = 4;
3661: } else {
3662: $width = 120+$NumBars*8;
3663: $xskip = 5;
3664: $bar_width = 4;
3665: }
3666: #
3667: $Max = 1 if ($Max < 1);
3668: if ( int($Max) < $Max ) {
3669: $Max++;
3670: $Max = int($Max);
3671: }
3672: $Title = '' if (! defined($Title));
3673: $xlabel = '' if (! defined($xlabel));
3674: $ylabel = '' if (! defined($ylabel));
3675: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3676: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3677: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3678: $ValuesHash{$id.'.y_max_value'} = $Max;
3679: $ValuesHash{$id.'.NumBars'} = $NumBars;
3680: $ValuesHash{$id.'.NumSets'} = $NumSets;
3681: $ValuesHash{$id.'.PlotType'} = 'bar';
3682: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3683: $ValuesHash{$id.'.height'} = $height;
3684: $ValuesHash{$id.'.width'} = $width;
3685: $ValuesHash{$id.'.xskip'} = $xskip;
3686: $ValuesHash{$id.'.bar_width'} = $bar_width;
3687: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3688: #
3689: # Deal with other parameters
3690: while (my ($key,$value) = each(%$extra_settings)) {
3691: $ValuesHash{$id.'.'.$key} = $value;
3692: }
3693: #
3694: &Apache::lonnet::appenv(%ValuesHash);
3695: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3696: }
3697:
3698: ############################################################
3699: ############################################################
3700:
3701: =pod
3702:
3703: =item DrawXYGraph
3704:
3705: Facilitates the plotting of data in an XY graph.
3706: Puts plot definition data into the users environment in order for
3707: graph.png to plot it. Returns an <img> tag for the plot.
3708:
3709: Inputs:
3710:
3711: =over 4
3712:
3713: =item $Title: string, the title of the plot
3714:
3715: =item $xlabel: string, text describing the X-axis of the plot
3716:
3717: =item $ylabel: string, text describing the Y-axis of the plot
3718:
3719: =item $Max: scalar, the maximum Y value to use in the plot
3720: If $Max is < any data point, the graph will not be rendered.
3721:
3722: =item $colors: Array ref containing the hex color codes for the data to be
3723: plotted in. If undefined, default values will be used.
3724:
3725: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3726:
3727: =item $Ydata: Array ref containing Array refs.
3728: Each of the contained arrays will be plotted as a separate curve.
3729:
3730: =item %Values: hash indicating or overriding any default values which are
3731: passed to graph.png.
3732: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3733:
3734: =back
3735:
3736: Returns:
3737:
3738: An <img> tag which references graph.png and the appropriate identifying
3739: information for the plot.
3740:
3741: =cut
3742:
3743: ############################################################
3744: ############################################################
3745: sub DrawXYGraph {
3746: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3747: #
3748: # Create the identifier for the graph
3749: my $identifier = &get_cgi_id();
3750: my $id = 'cgi.'.$identifier;
3751: #
3752: $Title = '' if (! defined($Title));
3753: $xlabel = '' if (! defined($xlabel));
3754: $ylabel = '' if (! defined($ylabel));
3755: my %ValuesHash =
3756: (
3757: $id.'.title' => &Apache::lonnet::escape($Title),
3758: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3759: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3760: $id.'.y_max_value'=> $Max,
3761: $id.'.labels' => join(',',@$Xlabels),
3762: $id.'.PlotType' => 'XY',
3763: );
3764: #
3765: if (defined($colors) && ref($colors) eq 'ARRAY') {
3766: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3767: }
3768: #
3769: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3770: return '';
3771: }
3772: my $NumSets=1;
3773: foreach my $array (@{$Ydata}){
3774: next if (! ref($array));
3775: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3776: }
3777: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3778: #
3779: # Deal with other parameters
3780: while (my ($key,$value) = each(%Values)) {
3781: $ValuesHash{$id.'.'.$key} = $value;
3782: }
3783: #
3784: &Apache::lonnet::appenv(%ValuesHash);
3785: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3786: }
3787:
3788: ############################################################
3789: ############################################################
3790:
3791: =pod
3792:
3793: =item DrawXYYGraph
3794:
3795: Facilitates the plotting of data in an XY graph with two Y axes.
3796: Puts plot definition data into the users environment in order for
3797: graph.png to plot it. Returns an <img> tag for the plot.
3798:
3799: Inputs:
3800:
3801: =over 4
3802:
3803: =item $Title: string, the title of the plot
3804:
3805: =item $xlabel: string, text describing the X-axis of the plot
3806:
3807: =item $ylabel: string, text describing the Y-axis of the plot
3808:
3809: =item $colors: Array ref containing the hex color codes for the data to be
3810: plotted in. If undefined, default values will be used.
3811:
3812: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3813:
3814: =item $Ydata1: The first data set
3815:
3816: =item $Min1: The minimum value of the left Y-axis
3817:
3818: =item $Max1: The maximum value of the left Y-axis
3819:
3820: =item $Ydata2: The second data set
3821:
3822: =item $Min2: The minimum value of the right Y-axis
3823:
3824: =item $Max2: The maximum value of the left Y-axis
3825:
3826: =item %Values: hash indicating or overriding any default values which are
3827: passed to graph.png.
3828: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3829:
3830: =back
3831:
3832: Returns:
3833:
3834: An <img> tag which references graph.png and the appropriate identifying
3835: information for the plot.
3836:
3837: =cut
3838:
3839: ############################################################
3840: ############################################################
3841: sub DrawXYYGraph {
3842: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3843: $Ydata2,$Min2,$Max2,%Values)=@_;
3844: #
3845: # Create the identifier for the graph
3846: my $identifier = &get_cgi_id();
3847: my $id = 'cgi.'.$identifier;
3848: #
3849: $Title = '' if (! defined($Title));
3850: $xlabel = '' if (! defined($xlabel));
3851: $ylabel = '' if (! defined($ylabel));
3852: my %ValuesHash =
3853: (
3854: $id.'.title' => &Apache::lonnet::escape($Title),
3855: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3856: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3857: $id.'.labels' => join(',',@$Xlabels),
3858: $id.'.PlotType' => 'XY',
3859: $id.'.NumSets' => 2,
3860: $id.'.two_axes' => 1,
3861: $id.'.y1_max_value' => $Max1,
3862: $id.'.y1_min_value' => $Min1,
3863: $id.'.y2_max_value' => $Max2,
3864: $id.'.y2_min_value' => $Min2,
3865: );
3866: #
3867: if (defined($colors) && ref($colors) eq 'ARRAY') {
3868: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3869: }
3870: #
3871: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3872: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3873: return '';
3874: }
3875: my $NumSets=1;
3876: foreach my $array ($Ydata1,$Ydata2){
3877: next if (! ref($array));
3878: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3879: }
3880: #
3881: # Deal with other parameters
3882: while (my ($key,$value) = each(%Values)) {
3883: $ValuesHash{$id.'.'.$key} = $value;
3884: }
3885: #
3886: &Apache::lonnet::appenv(%ValuesHash);
3887: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3888: }
3889:
3890: ############################################################
3891: ############################################################
3892:
3893: =pod
3894:
3895: =back
3896:
3897: =head1 Statistics helper routines?
3898:
3899: Bad place for them but what the hell.
3900:
3901: =over 4
3902:
3903: =item &chartlink
3904:
3905: Returns a link to the chart for a specific student.
3906:
3907: Inputs:
3908:
3909: =over 4
3910:
3911: =item $linktext: The text of the link
3912:
3913: =item $sname: The students username
3914:
3915: =item $sdomain: The students domain
3916:
3917: =back
3918:
3919: =back
3920:
3921: =cut
3922:
3923: ############################################################
3924: ############################################################
3925: sub chartlink {
3926: my ($linktext, $sname, $sdomain) = @_;
3927: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3928: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3929: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3930: '">'.$linktext.'</a>';
3931: }
3932:
3933: #######################################################
3934: #######################################################
3935:
3936: =pod
3937:
3938: =head1 Course Environment Routines
3939:
3940: =over 4
3941:
3942: =item &restore_course_settings
3943:
3944: =item &store_course_settings
3945:
3946: Restores/Store indicated form parameters from the course environment.
3947: Will not overwrite existing values of the form parameters.
3948:
3949: Inputs:
3950: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3951:
3952: a hash ref describing the data to be stored. For example:
3953:
3954: %Save_Parameters = ('Status' => 'scalar',
3955: 'chartoutputmode' => 'scalar',
3956: 'chartoutputdata' => 'scalar',
3957: 'Section' => 'array',
3958: 'StudentData' => 'array',
3959: 'Maps' => 'array');
3960:
3961: Returns: both routines return nothing
3962:
3963: =cut
3964:
3965: #######################################################
3966: #######################################################
3967: sub store_course_settings {
3968: # save to the environment
3969: # appenv the same items, just to be safe
3970: my $courseid = $env{'request.course.id'};
3971: my $coursedom = $env{'course.'.$courseid.'.domain'};
3972: my ($prefix,$Settings) = @_;
3973: my %SaveHash;
3974: my %AppHash;
3975: while (my ($setting,$type) = each(%$Settings)) {
3976: my $basename = 'internal.'.$prefix.'.'.$setting;
3977: my $envname = 'course.'.$courseid.'.'.$basename;
3978: if (exists($env{'form.'.$setting})) {
3979: # Save this value away
3980: if ($type eq 'scalar' &&
3981: (! exists($env{$envname}) ||
3982: $env{$envname} ne $env{'form.'.$setting})) {
3983: $SaveHash{$basename} = $env{'form.'.$setting};
3984: $AppHash{$envname} = $env{'form.'.$setting};
3985: } elsif ($type eq 'array') {
3986: my $stored_form;
3987: if (ref($env{'form.'.$setting})) {
3988: $stored_form = join(',',
3989: map {
3990: &Apache::lonnet::escape($_);
3991: } sort(@{$env{'form.'.$setting}}));
3992: } else {
3993: $stored_form =
3994: &Apache::lonnet::escape($env{'form.'.$setting});
3995: }
3996: # Determine if the array contents are the same.
3997: if ($stored_form ne $env{$envname}) {
3998: $SaveHash{$basename} = $stored_form;
3999: $AppHash{$envname} = $stored_form;
4000: }
4001: }
4002: }
4003: }
4004: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
4005: $coursedom,
4006: $env{'course.'.$courseid.'.num'});
4007: if ($put_result !~ /^(ok|delayed)/) {
4008: &Apache::lonnet::logthis('unable to save form parameters, '.
4009: 'got error:'.$put_result);
4010: }
4011: # Make sure these settings stick around in this session, too
4012: &Apache::lonnet::appenv(%AppHash);
4013: return;
4014: }
4015:
4016: sub restore_course_settings {
4017: my $courseid = $env{'request.course.id'};
4018: my ($prefix,$Settings) = @_;
4019: while (my ($setting,$type) = each(%$Settings)) {
4020: next if (exists($env{'form.'.$setting}));
4021: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
4022: '.'.$setting;
4023: if (exists($env{$envname})) {
4024: if ($type eq 'scalar') {
4025: $env{'form.'.$setting} = $env{$envname};
4026: } elsif ($type eq 'array') {
4027: $env{'form.'.$setting} = [
4028: map {
4029: &Apache::lonnet::unescape($_);
4030: } split(',',$env{$envname})
4031: ];
4032: }
4033: }
4034: }
4035: }
4036:
4037: ############################################################
4038: ############################################################
4039:
4040: sub propath {
4041: my ($udom,$uname)=@_;
4042: $udom=~s/\W//g;
4043: $uname=~s/\W//g;
4044: my $subdir=$uname.'__';
4045: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4046: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
4047: return $proname;
4048: }
4049:
4050: sub icon {
4051: my ($file)=@_;
4052: my $curfext = (split(/\./,$file))[-1];
4053: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
4054: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
4055: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
4056: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
4057: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4058: $curfext.".gif") {
4059: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4060: $curfext.".gif";
4061: }
4062: }
4063: return &lonhttpdurl($iconname);
4064: }
4065:
4066: sub lonhttpdurl {
4067: my ($url)=@_;
4068: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
4069: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
4070: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
4071: }
4072:
4073: sub connection_aborted {
4074: my ($r)=@_;
4075: $r->print(" ");$r->rflush();
4076: my $c = $r->connection;
4077: return $c->aborted();
4078: }
4079:
4080: # Escapes strings that may have embedded 's that will be put into
4081: # strings as 'strings'.
4082: sub escape_single {
4083: my ($input) = @_;
4084: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
4085: $input =~ s/\'/\\\'/g; # Esacpe the 's....
4086: return $input;
4087: }
4088:
4089: # Same as escape_single, but escape's "'s This
4090: # can be used for "strings"
4091: sub escape_double {
4092: my ($input) = @_;
4093: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
4094: $input =~ s/\"/\\\"/g; # Esacpe the "s....
4095: return $input;
4096: }
4097:
4098: # Escapes the last element of a full URL.
4099: sub escape_url {
4100: my ($url) = @_;
4101: my @urlslices = split(/\//, $url,-1);
4102: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
4103: return join('/',@urlslices).'/'.$lastitem;
4104: }
4105: =pod
4106:
4107: =back
4108:
4109: =cut
4110:
4111: 1;
4112: __END__;
4113:
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