1: # The LearningOnline Network with CAPA
2: # a pile of common routines
3: #
4: # $Id: loncommon.pm,v 1.262 2005/05/26 20:49:23 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 $nothing=&Apache::lonhtmlcommon::javascript_nothing();
691: my $html=&Apache::lonxml::xmlbegin();
692: my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
693: $template .= <<"ENDTEMPLATE";
694: <script type="text/javascript">
695: // <!-- BEGIN LON-CAPA Internal
696: // <![CDATA[
697: function helpMenu(target) {
698: var caller = this;
699: if (target == 'open') {
700: var newWindow = null;
701: try {
702: newWindow = window.open($nothing,"helpmenu","HEIGHT=$height,WIDTH=$width,resizable=yes,scrollbars=yes" )
703: }
704: catch(error) {
705: writeHelp(caller);
706: return;
707: }
708: if (newWindow) {
709: caller = newWindow;
710: }
711: }
712: writeHelp(caller);
713: return;
714: }
715: function writeHelp(caller) {
716: caller.document.write('$html<head><title>LON-CAPA Help Menu</title><meta http-equiv="pragma" content="no-cache"></head>')
717: caller.document.write("<frameset rows='105,*' border='0'><frame name='bannerframe' src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
718: caller.document.write("</html>")
719: caller.document.close()
720: caller.focus()
721: }
722: // ]]>
723: // END LON-CAPA Internal -->
724: </script>
725: <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
726: ENDTEMPLATE
727: if ($component_help) {
728: if (!$text) {
729: $template=&help_open_topic($component_help,undef,$stayOnPage,
730: $width,$height).' '.$template;
731: } else {
732: my $help_text;
733: $help_text=&Apache::lonnet::unescape($topic);
734: $template='<table><tr><td>'.
735: &help_open_topic($component_help,$help_text,$stayOnPage,
736: $width,$height).'</td><td>'.$template.
737: '</td></tr></table>';
738: }
739: }
740: if ($text ne '') { $template.='</td></tr></table>' };
741: return $template;
742: }
743:
744: sub help_open_bug {
745: my ($topic, $text, $stayOnPage, $width, $height) = @_;
746: unless ($env{'user.adv'}) { return ''; }
747: unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
748: $text = "" if (not defined $text);
749: $stayOnPage = 0 if (not defined $stayOnPage);
750: if ($env{'browser.interface'} eq 'textual' ||
751: $env{'environment.remote'} eq 'off' ) {
752: $stayOnPage=1;
753: }
754: $width = 600 if (not defined $width);
755: $height = 600 if (not defined $height);
756:
757: $topic=~s/\W+/\+/g;
758: my $link='';
759: my $template='';
760: my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
761: &Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
762: if (!$stayOnPage)
763: {
764: $link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
765: }
766: else
767: {
768: $link = $url;
769: }
770: # Add the text
771: if ($text ne "")
772: {
773: $template .=
774: "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
775: "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
776: }
777:
778: # Add the graphic
779: my $title = &mt('Report a Bug');
780: my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
781: $template .= <<"ENDTEMPLATE";
782: <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
783: ENDTEMPLATE
784: if ($text ne '') { $template.='</td></tr></table>' };
785: return $template;
786:
787: }
788:
789: sub help_open_faq {
790: my ($topic, $text, $stayOnPage, $width, $height) = @_;
791: unless ($env{'user.adv'}) { return ''; }
792: unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
793: $text = "" if (not defined $text);
794: $stayOnPage = 0 if (not defined $stayOnPage);
795: if ($env{'browser.interface'} eq 'textual' ||
796: $env{'environment.remote'} eq 'off' ) {
797: $stayOnPage=1;
798: }
799: $width = 350 if (not defined $width);
800: $height = 400 if (not defined $height);
801:
802: $topic=~s/\W+/\+/g;
803: my $link='';
804: my $template='';
805: my $url=$Apache::lonnet::perlvar{'FAQHost'}.'/fom/cache/'.$topic.'.html';
806: if (!$stayOnPage)
807: {
808: $link = "javascript:void(open('$url', 'FAQ-O-Matic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
809: }
810: else
811: {
812: $link = $url;
813: }
814:
815: # Add the text
816: if ($text ne "")
817: {
818: $template .=
819: "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
820: "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
821: }
822:
823: # Add the graphic
824: my $title = &mt('View the FAQ');
825: my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
826: $template .= <<"ENDTEMPLATE";
827: <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
828: ENDTEMPLATE
829: if ($text ne '') { $template.='</td></tr></table>' };
830: return $template;
831:
832: }
833:
834: ###############################################################
835: ###############################################################
836:
837: =pod
838:
839: =item * change_content_javascript():
840:
841: This and the next function allow you to create small sections of an
842: otherwise static HTML page that you can update on the fly with
843: Javascript, even in Netscape 4.
844:
845: The Javascript fragment returned by this function (no E<lt>scriptE<gt> tag)
846: must be written to the HTML page once. It will prove the Javascript
847: function "change(name, content)". Calling the change function with the
848: name of the section
849: you want to update, matching the name passed to C<changable_area>, and
850: the new content you want to put in there, will put the content into
851: that area.
852:
853: B<Note>: Netscape 4 only reserves enough space for the changable area
854: to contain room for the original contents. You need to "make space"
855: for whatever changes you wish to make, and be B<sure> to check your
856: code in Netscape 4. This feature in Netscape 4 is B<not> powerful;
857: it's adequate for updating a one-line status display, but little more.
858: This script will set the space to 100% width, so you only need to
859: worry about height in Netscape 4.
860:
861: Modern browsers are much less limiting, and if you can commit to the
862: user not using Netscape 4, this feature may be used freely with
863: pretty much any HTML.
864:
865: =cut
866:
867: sub change_content_javascript {
868: # If we're on Netscape 4, we need to use Layer-based code
869: if ($env{'browser.type'} eq 'netscape' &&
870: $env{'browser.version'} =~ /^4\./) {
871: return (<<NETSCAPE4);
872: function change(name, content) {
873: doc = document.layers[name+"___escape"].layers[0].document;
874: doc.open();
875: doc.write(content);
876: doc.close();
877: }
878: NETSCAPE4
879: } else {
880: # Otherwise, we need to use semi-standards-compliant code
881: # (technically, "innerHTML" isn't standard but the equivalent
882: # is really scary, and every useful browser supports it
883: return (<<DOMBASED);
884: function change(name, content) {
885: element = document.getElementById(name);
886: element.innerHTML = content;
887: }
888: DOMBASED
889: }
890: }
891:
892: =pod
893:
894: =item * changable_area($name, $origContent):
895:
896: This provides a "changable area" that can be modified on the fly via
897: the Javascript code provided in C<change_content_javascript>. $name is
898: the name you will use to reference the area later; do not repeat the
899: same name on a given HTML page more then once. $origContent is what
900: the area will originally contain, which can be left blank.
901:
902: =cut
903:
904: sub changable_area {
905: my ($name, $origContent) = @_;
906:
907: if ($env{'browser.type'} eq 'netscape' &&
908: $env{'browser.version'} =~ /^4\./) {
909: # If this is netscape 4, we need to use the Layer tag
910: return "<ilayer width='100%' id='${name}___escape' overflow='none'><layer width='100%' id='$name' overflow='none'>$origContent</layer></ilayer>";
911: } else {
912: return "<span id='$name'>$origContent</span>";
913: }
914: }
915:
916: =pod
917:
918: =back
919:
920: =head1 Excel and CSV file utility routines
921:
922: =over 4
923:
924: =cut
925:
926: ###############################################################
927: ###############################################################
928:
929: =pod
930:
931: =item * csv_translate($text)
932:
933: Translate $text to allow it to be output as a 'comma separated values'
934: format.
935:
936: =cut
937:
938: ###############################################################
939: ###############################################################
940: sub csv_translate {
941: my $text = shift;
942: $text =~ s/\"/\"\"/g;
943: $text =~ s/\n/ /g;
944: return $text;
945: }
946:
947: ###############################################################
948: ###############################################################
949:
950: =pod
951:
952: =item * define_excel_formats
953:
954: Define some commonly used Excel cell formats.
955:
956: Currently supported formats:
957:
958: =over 4
959:
960: =item header
961:
962: =item bold
963:
964: =item h1
965:
966: =item h2
967:
968: =item h3
969:
970: =item h4
971:
972: =item i
973:
974: =item date
975:
976: =back
977:
978: Inputs: $workbook
979:
980: Returns: $format, a hash reference.
981:
982: =cut
983:
984: ###############################################################
985: ###############################################################
986: sub define_excel_formats {
987: my ($workbook) = @_;
988: my $format;
989: $format->{'header'} = $workbook->add_format(bold => 1,
990: bottom => 1,
991: align => 'center');
992: $format->{'bold'} = $workbook->add_format(bold=>1);
993: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
994: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
995: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
996: $format->{'h4'} = $workbook->add_format(bold=>1, size=>12);
997: $format->{'i'} = $workbook->add_format(italic=>1);
998: $format->{'date'} = $workbook->add_format(num_format=>
999: 'mm/dd/yyyy hh:mm:ss');
1000: return $format;
1001: }
1002:
1003: ###############################################################
1004: ###############################################################
1005:
1006: =pod
1007:
1008: =item * create_workbook
1009:
1010: Create an Excel worksheet. If it fails, output message on the
1011: request object and return undefs.
1012:
1013: Inputs: Apache request object
1014:
1015: Returns (undef) on failure,
1016: Excel worksheet object, scalar with filename, and formats
1017: from &Apache::loncommon::define_excel_formats on success
1018:
1019: =cut
1020:
1021: ###############################################################
1022: ###############################################################
1023: sub create_workbook {
1024: my ($r) = @_;
1025: #
1026: # Create the excel spreadsheet
1027: my $filename = '/prtspool/'.
1028: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1029: time.'_'.rand(1000000000).'.xls';
1030: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1031: if (! defined($workbook)) {
1032: $r->log_error("Error creating excel spreadsheet $filename: $!");
1033: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1034: "This error has been logged. ".
1035: "Please alert your LON-CAPA administrator").
1036: '</p>');
1037: return (undef);
1038: }
1039: #
1040: $workbook->set_tempdir('/home/httpd/perl/tmp');
1041: #
1042: my $format = &Apache::loncommon::define_excel_formats($workbook);
1043: return ($workbook,$filename,$format);
1044: }
1045:
1046: ###############################################################
1047: ###############################################################
1048:
1049: =pod
1050:
1051: =item * create_text_file
1052:
1053: Create a file to write to and eventually make available to the usre.
1054: If file creation fails, outputs an error message on the request object and
1055: return undefs.
1056:
1057: Inputs: Apache request object, and file suffix
1058:
1059: Returns (undef) on failure,
1060: Filehandle and filename on success.
1061:
1062: =cut
1063:
1064: ###############################################################
1065: ###############################################################
1066: sub create_text_file {
1067: my ($r,$suffix) = @_;
1068: if (! defined($suffix)) { $suffix = 'txt'; };
1069: my $fh;
1070: my $filename = '/prtspool/'.
1071: $env{'user.name'}.'_'.$env{'user.domain'}.'_'.
1072: time.'_'.rand(1000000000).'.'.$suffix;
1073: $fh = Apache::File->new('>/home/httpd'.$filename);
1074: if (! defined($fh)) {
1075: $r->log_error("Couldn't open $filename for output $!");
1076: $r->print("Problems occured in creating the output file. ".
1077: "This error has been logged. ".
1078: "Please alert your LON-CAPA administrator.");
1079: }
1080: return ($fh,$filename)
1081: }
1082:
1083:
1084: =pod
1085:
1086: =back
1087:
1088: =cut
1089:
1090: ###############################################################
1091: ## Home server <option> list generating code ##
1092: ###############################################################
1093:
1094: =pod
1095:
1096: =head1 Home Server option list generating code
1097:
1098: =over 4
1099:
1100: =item * get_domains()
1101:
1102: Returns an array containing each of the domains listed in the hosts.tab
1103: file.
1104:
1105: =cut
1106:
1107: #-------------------------------------------
1108: sub get_domains {
1109: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
1110: my @domains;
1111: my %seen;
1112: foreach (sort values(%Apache::lonnet::hostdom)) {
1113: push (@domains,$_) unless $seen{$_}++;
1114: }
1115: return @domains;
1116: }
1117:
1118: # ------------------------------------------
1119:
1120: sub domain_select {
1121: my ($name,$value,$multiple)=@_;
1122: my %domains=map {
1123: $_ => $_.' '.$Apache::lonnet::domaindescription{$_}
1124: } &get_domains;
1125: if ($multiple) {
1126: $domains{''}=&mt('Any domain');
1127: return &multiple_select_form($name,$value,4,%domains);
1128: } else {
1129: return &select_form($name,$value,%domains);
1130: }
1131: }
1132:
1133: sub multiple_select_form {
1134: my ($name,$value,$size,%hash)=@_;
1135: my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
1136: my $output='';
1137: if (! defined($size)) {
1138: $size = 4;
1139: if (scalar(keys(%hash))<4) {
1140: $size = scalar(keys(%hash));
1141: }
1142: }
1143: $output.="\n<select name='$name' size='$size' multiple='1'>";
1144: foreach (sort(keys(%hash))) {
1145: $output.='<option value="'.$_.'" ';
1146: $output.='selected="selected" ' if ($selected{$_});
1147: $output.='>'.$hash{$_}."</option>\n";
1148: }
1149: $output.="</select>\n";
1150: return $output;
1151: }
1152:
1153: #-------------------------------------------
1154:
1155: =pod
1156:
1157: =item * select_form($defdom,$name,%hash)
1158:
1159: Returns a string containing a <select name='$name' size='1'> form to
1160: allow a user to select options from a hash option_name => displayed text.
1161: See lonrights.pm for an example invocation and use.
1162:
1163: =cut
1164:
1165: #-------------------------------------------
1166: sub select_form {
1167: my ($def,$name,%hash) = @_;
1168: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1169: my @keys;
1170: if (exists($hash{'select_form_order'})) {
1171: @keys=@{$hash{'select_form_order'}};
1172: } else {
1173: @keys=sort(keys(%hash));
1174: }
1175: foreach (@keys) {
1176: $selectform.="<option value=\"$_\" ".
1177: ($_ eq $def ? 'selected="selected" ' : '').
1178: ">".&mt($hash{$_})."</option>\n";
1179: }
1180: $selectform.="</select>";
1181: return $selectform;
1182: }
1183:
1184: sub gradeleveldescription {
1185: my $gradelevel=shift;
1186: my %gradelevels=(0 => 'Not specified',
1187: 1 => 'Grade 1',
1188: 2 => 'Grade 2',
1189: 3 => 'Grade 3',
1190: 4 => 'Grade 4',
1191: 5 => 'Grade 5',
1192: 6 => 'Grade 6',
1193: 7 => 'Grade 7',
1194: 8 => 'Grade 8',
1195: 9 => 'Grade 9',
1196: 10 => 'Grade 10',
1197: 11 => 'Grade 11',
1198: 12 => 'Grade 12',
1199: 13 => 'Grade 13',
1200: 14 => '100 Level',
1201: 15 => '200 Level',
1202: 16 => '300 Level',
1203: 17 => '400 Level',
1204: 18 => 'Graduate Level');
1205: return &mt($gradelevels{$gradelevel});
1206: }
1207:
1208: sub select_level_form {
1209: my ($deflevel,$name)=@_;
1210: unless ($deflevel) { $deflevel=0; }
1211: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1212: for (my $i=0; $i<=18; $i++) {
1213: $selectform.="<option value=\"$i\" ".
1214: ($i==$deflevel ? 'selected="selected" ' : '').
1215: ">".&gradeleveldescription($i)."</option>\n";
1216: }
1217: $selectform.="</select>";
1218: return $selectform;
1219: }
1220:
1221: #-------------------------------------------
1222:
1223: =pod
1224:
1225: =item * select_dom_form($defdom,$name,$includeempty)
1226:
1227: Returns a string containing a <select name='$name' size='1'> form to
1228: allow a user to select the domain to preform an operation in.
1229: See loncreateuser.pm for an example invocation and use.
1230:
1231: If the $includeempty flag is set, it also includes an empty choice ("no domain
1232: selected");
1233:
1234: =cut
1235:
1236: #-------------------------------------------
1237: sub select_dom_form {
1238: my ($defdom,$name,$includeempty) = @_;
1239: my @domains = get_domains();
1240: if ($includeempty) { @domains=('',@domains); }
1241: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
1242: foreach (@domains) {
1243: $selectdomain.="<option value=\"$_\" ".
1244: ($_ eq $defdom ? 'selected="selected" ' : '').
1245: ">$_</option>\n";
1246: }
1247: $selectdomain.="</select>";
1248: return $selectdomain;
1249: }
1250:
1251: #-------------------------------------------
1252:
1253: =pod
1254:
1255: =item * get_library_servers($domain)
1256:
1257: Returns a hash which contains keys like '103l3' and values like
1258: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
1259: given $domain.
1260:
1261: =cut
1262:
1263: #-------------------------------------------
1264: sub get_library_servers {
1265: my $domain = shift;
1266: my %library_servers;
1267: foreach (keys(%Apache::lonnet::libserv)) {
1268: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1269: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1270: }
1271: }
1272: return %library_servers;
1273: }
1274:
1275: #-------------------------------------------
1276:
1277: =pod
1278:
1279: =item * home_server_option_list($domain)
1280:
1281: returns a string which contains an <option> list to be used in a
1282: <select> form input. See loncreateuser.pm for an example.
1283:
1284: =cut
1285:
1286: #-------------------------------------------
1287: sub home_server_option_list {
1288: my $domain = shift;
1289: my %servers = &get_library_servers($domain);
1290: my $result = '';
1291: foreach (sort keys(%servers)) {
1292: $result.=
1293: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
1294: }
1295: return $result;
1296: }
1297:
1298: =pod
1299:
1300: =back
1301:
1302: =cut
1303:
1304: ###############################################################
1305: ## Decoding User Agent ##
1306: ###############################################################
1307:
1308: =pod
1309:
1310: =head1 Decoding the User Agent
1311:
1312: =over 4
1313:
1314: =item * &decode_user_agent()
1315:
1316: Inputs: $r
1317:
1318: Outputs:
1319:
1320: =over 4
1321:
1322: =item * $httpbrowser
1323:
1324: =item * $clientbrowser
1325:
1326: =item * $clientversion
1327:
1328: =item * $clientmathml
1329:
1330: =item * $clientunicode
1331:
1332: =item * $clientos
1333:
1334: =back
1335:
1336: =back
1337:
1338: =cut
1339:
1340: ###############################################################
1341: ###############################################################
1342: sub decode_user_agent {
1343: my ($r)=@_;
1344: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
1345: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
1346: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
1347: if (!$httpbrowser && $r) { $httpbrowser=$r->header_in('User-Agent'); }
1348: my $clientbrowser='unknown';
1349: my $clientversion='0';
1350: my $clientmathml='';
1351: my $clientunicode='0';
1352: for (my $i=0;$i<=$#browsertype;$i++) {
1353: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
1354: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
1355: $clientbrowser=$bname;
1356: $httpbrowser=~/$vreg/i;
1357: $clientversion=$1;
1358: $clientmathml=($clientversion>=$minv);
1359: $clientunicode=($clientversion>=$univ);
1360: }
1361: }
1362: my $clientos='unknown';
1363: if (($httpbrowser=~/linux/i) ||
1364: ($httpbrowser=~/unix/i) ||
1365: ($httpbrowser=~/ux/i) ||
1366: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
1367: if (($httpbrowser=~/vax/i) ||
1368: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
1369: if ($httpbrowser=~/next/i) { $clientos='next'; }
1370: if (($httpbrowser=~/mac/i) ||
1371: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
1372: if ($httpbrowser=~/win/i) { $clientos='win'; }
1373: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
1374: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
1375: $clientunicode,$clientos,);
1376: }
1377:
1378: ###############################################################
1379: ## Authentication changing form generation subroutines ##
1380: ###############################################################
1381: ##
1382: ## All of the authform_xxxxxxx subroutines take their inputs in a
1383: ## hash, and have reasonable default values.
1384: ##
1385: ## formname = the name given in the <form> tag.
1386: #-------------------------------------------
1387:
1388: =pod
1389:
1390: =head1 Authentication Routines
1391:
1392: =over 4
1393:
1394: =item * authform_xxxxxx
1395:
1396: The authform_xxxxxx subroutines provide javascript and html forms which
1397: handle some of the conveniences required for authentication forms.
1398: This is not an optimal method, but it works.
1399:
1400: See loncreateuser.pm for invocation and use examples.
1401:
1402: =over 4
1403:
1404: =item * authform_header
1405:
1406: =item * authform_authorwarning
1407:
1408: =item * authform_nochange
1409:
1410: =item * authform_kerberos
1411:
1412: =item * authform_internal
1413:
1414: =item * authform_filesystem
1415:
1416: =back
1417:
1418: =back
1419:
1420: =cut
1421:
1422: #-------------------------------------------
1423: sub authform_header{
1424: my %in = (
1425: formname => 'cu',
1426: kerb_def_dom => '',
1427: @_,
1428: );
1429: $in{'formname'} = 'document.' . $in{'formname'};
1430: my $result='';
1431:
1432: #---------------------------------------------- Code for upper case translation
1433: my $Javascript_toUpperCase;
1434: unless ($in{kerb_def_dom}) {
1435: $Javascript_toUpperCase =<<"END";
1436: switch (choice) {
1437: case 'krb': currentform.elements[choicearg].value =
1438: currentform.elements[choicearg].value.toUpperCase();
1439: break;
1440: default:
1441: }
1442: END
1443: } else {
1444: $Javascript_toUpperCase = "";
1445: }
1446:
1447: my $radioval = "'nochange'";
1448: if (exists($in{'curr_authtype'}) &&
1449: defined($in{'curr_authtype'}) &&
1450: $in{'curr_authtype'} ne '') {
1451: $radioval = "'$in{'curr_authtype'}arg'";
1452: }
1453: my $argfield = 'null';
1454: if ( grep/^mode$/,(keys %in) ) {
1455: if ($in{'mode'} eq 'modifycourse') {
1456: if ( grep/^curr_authtype$/,(keys %in) ) {
1457: $radioval = "'$in{'curr_authtype'}'";
1458: }
1459: if ( grep/^curr_autharg$/,(keys %in) ) {
1460: unless ($in{'curr_autharg'} eq '') {
1461: $argfield = "'$in{'curr_autharg'}'";
1462: }
1463: }
1464: }
1465: }
1466:
1467: $result.=<<"END";
1468: var current = new Object();
1469: current.radiovalue = $radioval;
1470: current.argfield = $argfield;
1471:
1472: function changed_radio(choice,currentform) {
1473: var choicearg = choice + 'arg';
1474: // If a radio button in changed, we need to change the argfield
1475: if (current.radiovalue != choice) {
1476: current.radiovalue = choice;
1477: if (current.argfield != null) {
1478: currentform.elements[current.argfield].value = '';
1479: }
1480: if (choice == 'nochange') {
1481: current.argfield = null;
1482: } else {
1483: current.argfield = choicearg;
1484: switch(choice) {
1485: case 'krb':
1486: currentform.elements[current.argfield].value =
1487: "$in{'kerb_def_dom'}";
1488: break;
1489: default:
1490: break;
1491: }
1492: }
1493: }
1494: return;
1495: }
1496:
1497: function changed_text(choice,currentform) {
1498: var choicearg = choice + 'arg';
1499: if (currentform.elements[choicearg].value !='') {
1500: $Javascript_toUpperCase
1501: // clear old field
1502: if ((current.argfield != choicearg) && (current.argfield != null)) {
1503: currentform.elements[current.argfield].value = '';
1504: }
1505: current.argfield = choicearg;
1506: }
1507: set_auth_radio_buttons(choice,currentform);
1508: return;
1509: }
1510:
1511: function set_auth_radio_buttons(newvalue,currentform) {
1512: var i=0;
1513: while (i < currentform.login.length) {
1514: if (currentform.login[i].value == newvalue) { break; }
1515: i++;
1516: }
1517: if (i == currentform.login.length) {
1518: return;
1519: }
1520: current.radiovalue = newvalue;
1521: currentform.login[i].checked = true;
1522: return;
1523: }
1524: END
1525: return $result;
1526: }
1527:
1528: sub authform_authorwarning{
1529: my $result='';
1530: $result='<i>'.
1531: &mt('As a general rule, only authors or co-authors should be '.
1532: 'filesystem authenticated '.
1533: '(which allows access to the server filesystem).')."</i>\n";
1534: return $result;
1535: }
1536:
1537: sub authform_nochange{
1538: my %in = (
1539: formname => 'document.cu',
1540: kerb_def_dom => 'MSU.EDU',
1541: @_,
1542: );
1543: my $result = &mt('[_1] Do not change login data',
1544: '<input type="radio" name="login" value="nochange" '.
1545: 'checked="checked" onclick="'.
1546: "javascript:changed_radio('nochange',$in{'formname'});".'" />');
1547: return $result;
1548: }
1549:
1550: sub authform_kerberos{
1551: my %in = (
1552: formname => 'document.cu',
1553: kerb_def_dom => 'MSU.EDU',
1554: kerb_def_auth => 'krb4',
1555: @_,
1556: );
1557: my ($check4,$check5,$krbarg);
1558: if ($in{'kerb_def_auth'} eq 'krb5') {
1559: $check5 = " checked=\"on\"";
1560: } else {
1561: $check4 = " checked=\"on\"";
1562: }
1563: $krbarg = $in{'kerb_def_dom'};
1564:
1565: my $krbcheck = "";
1566: if ( grep/^curr_authtype$/,(keys %in) ) {
1567: if ($in{'curr_authtype'} =~ m/^krb/) {
1568: $krbcheck = " checked=\"on\"";
1569: if ( grep/^curr_autharg$/,(keys %in) ) {
1570: $krbarg = $in{'curr_autharg'};
1571: }
1572: }
1573: }
1574:
1575: my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
1576: my $result .= &mt
1577: ('[_1] Kerberos authenticated with domain [_2] '.
1578: '[_3] Version 4 [_4] Version 5',
1579: '<input type="radio" name="login" value="krb" '.
1580: 'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
1581: '<input type="text" size="10" name="krbarg" '.
1582: 'value="'.$krbarg.'" '.
1583: 'onchange="'.$jscall.'" />',
1584: '<input type="radio" name="krbver" value="4" '.$check4.' />',
1585: '<input type="radio" name="krbver" value="5" '.$check5.' />');
1586: return $result;
1587: }
1588:
1589: sub authform_internal{
1590: my %args = (
1591: formname => 'document.cu',
1592: kerb_def_dom => 'MSU.EDU',
1593: @_,
1594: );
1595:
1596: my $intcheck = "";
1597: my $intarg = 'value=""';
1598: if ( grep/^curr_authtype$/,(keys %args) ) {
1599: if ($args{'curr_authtype'} eq 'int') {
1600: $intcheck = " checked=\"on\"";
1601: if ( grep/^curr_autharg$/,(keys %args) ) {
1602: $intarg = "value=\"$args{'curr_autharg'}\"";
1603: }
1604: }
1605: }
1606:
1607: my $jscall = "javascript:changed_radio('int',$args{'formname'});";
1608: my $result.=&mt
1609: ('[_1] Internally authenticated (with initial password [_2])',
1610: '<input type="radio" name="login" value="int" '.$intcheck.
1611: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1612: '<input type="text" size="10" name="intarg" '.$intarg.
1613: ' onchange="'.$jscall.'" />');
1614: return $result;
1615: }
1616:
1617: sub authform_local{
1618: my %in = (
1619: formname => 'document.cu',
1620: kerb_def_dom => 'MSU.EDU',
1621: @_,
1622: );
1623:
1624: my $loccheck = "";
1625: my $locarg = 'value=""';
1626: if ( grep/^curr_authtype$/,(keys %in) ) {
1627: if ($in{'curr_authtype'} eq 'loc') {
1628: $loccheck = " checked=\"on\"";
1629: if ( grep/^curr_autharg$/,(keys %in) ) {
1630: $locarg = "value=\"$in{'curr_autharg'}\"";
1631: }
1632: }
1633: }
1634:
1635: my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
1636: my $result.=&mt('[_1] Local Authentication with argument [_2]',
1637: '<input type="radio" name="login" value="loc" '.$loccheck.
1638: ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1639: '<input type="text" size="10" name="locarg" '.$locarg.
1640: ' onchange="'.$jscall.'" />');
1641: return $result;
1642: }
1643:
1644: sub authform_filesystem{
1645: my %in = (
1646: formname => 'document.cu',
1647: kerb_def_dom => 'MSU.EDU',
1648: @_,
1649: );
1650: my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
1651: my $result.= &mt
1652: ('[_1] Filesystem Authenticated (with initial password [_2])',
1653: '<input type="radio" name="login" value="fsys" '.
1654: 'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
1655: '<input type="text" size="10" name="fsysarg" value="" '.
1656: 'onchange="'.$jscall.'" />');
1657: return $result;
1658: }
1659:
1660: ###############################################################
1661: ## Get Authentication Defaults for Domain ##
1662: ###############################################################
1663:
1664: =pod
1665:
1666: =head1 Domains and Authentication
1667:
1668: Returns default authentication type and an associated argument as
1669: listed in file 'domain.tab'.
1670:
1671: =over 4
1672:
1673: =item * get_auth_defaults
1674:
1675: get_auth_defaults($target_domain) returns the default authentication
1676: type and an associated argument (initial password or a kerberos domain).
1677: These values are stored in lonTabs/domain.tab
1678:
1679: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1680:
1681: If target_domain is not found in domain.tab, returns nothing ('').
1682:
1683: =cut
1684:
1685: #-------------------------------------------
1686: sub get_auth_defaults {
1687: my $domain=shift;
1688: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1689: }
1690: ###############################################################
1691: ## End Get Authentication Defaults for Domain ##
1692: ###############################################################
1693:
1694: ###############################################################
1695: ## Get Kerberos Defaults for Domain ##
1696: ###############################################################
1697: ##
1698: ## Returns default kerberos version and an associated argument
1699: ## as listed in file domain.tab. If not listed, provides
1700: ## appropriate default domain and kerberos version.
1701: ##
1702: #-------------------------------------------
1703:
1704: =pod
1705:
1706: =item * get_kerberos_defaults
1707:
1708: get_kerberos_defaults($target_domain) returns the default kerberos
1709: version and domain. If not found in domain.tabs, it defaults to
1710: version 4 and the domain of the server.
1711:
1712: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1713:
1714: =cut
1715:
1716: #-------------------------------------------
1717: sub get_kerberos_defaults {
1718: my $domain=shift;
1719: my ($krbdef,$krbdefdom) =
1720: &Apache::loncommon::get_auth_defaults($domain);
1721: unless ($krbdef =~/^krb/ && $krbdefdom) {
1722: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1723: my $krbdefdom=$1;
1724: $krbdefdom=~tr/a-z/A-Z/;
1725: $krbdef = "krb4";
1726: }
1727: return ($krbdef,$krbdefdom);
1728: }
1729:
1730: =pod
1731:
1732: =back
1733:
1734: =cut
1735:
1736: ###############################################################
1737: ## Thesaurus Functions ##
1738: ###############################################################
1739:
1740: =pod
1741:
1742: =head1 Thesaurus Functions
1743:
1744: =over 4
1745:
1746: =item * initialize_keywords
1747:
1748: Initializes the package variable %Keywords if it is empty. Uses the
1749: package variable $thesaurus_db_file.
1750:
1751: =cut
1752:
1753: ###################################################
1754:
1755: sub initialize_keywords {
1756: return 1 if (scalar keys(%Keywords));
1757: # If we are here, %Keywords is empty, so fill it up
1758: # Make sure the file we need exists...
1759: if (! -e $thesaurus_db_file) {
1760: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1761: " failed because it does not exist");
1762: return 0;
1763: }
1764: # Set up the hash as a database
1765: my %thesaurus_db;
1766: if (! tie(%thesaurus_db,'GDBM_File',
1767: $thesaurus_db_file,&GDBM_READER(),0640)){
1768: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1769: $thesaurus_db_file);
1770: return 0;
1771: }
1772: # Get the average number of appearances of a word.
1773: my $avecount = $thesaurus_db{'average.count'};
1774: # Put keywords (those that appear > average) into %Keywords
1775: while (my ($word,$data)=each (%thesaurus_db)) {
1776: my ($count,undef) = split /:/,$data;
1777: $Keywords{$word}++ if ($count > $avecount);
1778: }
1779: untie %thesaurus_db;
1780: # Remove special values from %Keywords.
1781: foreach ('total.count','average.count') {
1782: delete($Keywords{$_}) if (exists($Keywords{$_}));
1783: }
1784: return 1;
1785: }
1786:
1787: ###################################################
1788:
1789: =pod
1790:
1791: =item * keyword($word)
1792:
1793: Returns true if $word is a keyword. A keyword is a word that appears more
1794: than the average number of times in the thesaurus database. Calls
1795: &initialize_keywords
1796:
1797: =cut
1798:
1799: ###################################################
1800:
1801: sub keyword {
1802: return if (!&initialize_keywords());
1803: my $word=lc(shift());
1804: $word=~s/\W//g;
1805: return exists($Keywords{$word});
1806: }
1807:
1808: ###############################################################
1809:
1810: =pod
1811:
1812: =item * get_related_words
1813:
1814: Look up a word in the thesaurus. Takes a scalar argument and returns
1815: an array of words. If the keyword is not in the thesaurus, an empty array
1816: will be returned. The order of the words returned is determined by the
1817: database which holds them.
1818:
1819: Uses global $thesaurus_db_file.
1820:
1821: =cut
1822:
1823: ###############################################################
1824: sub get_related_words {
1825: my $keyword = shift;
1826: my %thesaurus_db;
1827: if (! -e $thesaurus_db_file) {
1828: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1829: "failed because the file does not exist");
1830: return ();
1831: }
1832: if (! tie(%thesaurus_db,'GDBM_File',
1833: $thesaurus_db_file,&GDBM_READER(),0640)){
1834: return ();
1835: }
1836: my @Words=();
1837: if (exists($thesaurus_db{$keyword})) {
1838: $_ = $thesaurus_db{$keyword};
1839: (undef,@Words) = split/:/; # The first element is the number of times
1840: # the word appears. We do not need it now.
1841: for (my $i=0;$i<=$#Words;$i++) {
1842: ($Words[$i],undef)= split/\,/,$Words[$i];
1843: }
1844: }
1845: untie %thesaurus_db;
1846: return @Words;
1847: }
1848:
1849: =pod
1850:
1851: =back
1852:
1853: =cut
1854:
1855: # -------------------------------------------------------------- Plaintext name
1856: =pod
1857:
1858: =head1 User Name Functions
1859:
1860: =over 4
1861:
1862: =item * plainname($uname,$udom,$first)
1863:
1864: Takes a users logon name and returns it as a string in
1865: "first middle last generation" form
1866: if $first is set to 'lastname' then it returns it as
1867: 'lastname generation, firstname middlename' if their is a lastname
1868:
1869: =cut
1870:
1871: ###############################################################
1872: sub plainname {
1873: my ($uname,$udom,$first)=@_;
1874: my %names=&Apache::lonnet::get('environment',
1875: ['firstname','middlename','lastname','generation'],
1876: $udom,$uname);
1877: my $name=&Apache::lonnet::format_name($names{'firstname'},
1878: $names{'middlename'},
1879: $names{'lastname'},
1880: $names{'generation'},$first);
1881: $name=~s/^\s+//;
1882: $name=~s/\s+$//;
1883: $name=~s/\s+/ /g;
1884: if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
1885: return $name;
1886: }
1887:
1888: # -------------------------------------------------------------------- Nickname
1889: =pod
1890:
1891: =item * nickname($uname,$udom)
1892:
1893: Gets a users name and returns it as a string as
1894:
1895: ""nickname""
1896:
1897: if the user has a nickname or
1898:
1899: "first middle last generation"
1900:
1901: if the user does not
1902:
1903: =cut
1904:
1905: sub nickname {
1906: my ($uname,$udom)=@_;
1907: my %names;
1908: if ($uname eq $env{'user.name'} &&
1909: $udom eq $env{'user.domain'}) {
1910: %names=('nickname' => $env{'environment.nickname'} ,
1911: 'firstname' => $env{'environment.firstname'} ,
1912: 'middlename' => $env{'environment.middlename'},
1913: 'lastname' => $env{'environment.lastname'} ,
1914: 'generation' => $env{'environment.generation'});
1915: } else {
1916: %names=&Apache::lonnet::get('environment',
1917: ['nickname','firstname','middlename',
1918: 'lastname','generation'],$udom,$uname);
1919: }
1920: my $name=$names{'nickname'};
1921: if ($name) {
1922: $name='"'.$name.'"';
1923: } else {
1924: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1925: $names{'lastname'}.' '.$names{'generation'};
1926: $name=~s/\s+$//;
1927: $name=~s/\s+/ /g;
1928: }
1929: return $name;
1930: }
1931:
1932:
1933: # ------------------------------------------------------------------ Screenname
1934:
1935: =pod
1936:
1937: =item * screenname($uname,$udom)
1938:
1939: Gets a users screenname and returns it as a string
1940:
1941: =cut
1942:
1943: sub screenname {
1944: my ($uname,$udom)=@_;
1945: if ($uname eq $env{'user.name'} &&
1946: $udom eq $env{'user.domain'}) {return $env{'environment.screenname'};}
1947: my %names=&Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1948: return $names{'screenname'};
1949: }
1950:
1951:
1952: # ------------------------------------------------------------- Message Wrapper
1953:
1954: sub messagewrapper {
1955: my ($link,$username,$domain)=@_;
1956: return
1957: '<a href="/adm/email?compose=individual&'.
1958: 'recname='.$username.'&recdom='.$domain.'" '.
1959: 'title="'.&mt('Send message').'">'.$link.'</a>';
1960: }
1961: # --------------------------------------------------------------- Notes Wrapper
1962:
1963: sub noteswrapper {
1964: my ($link,$un,$do)=@_;
1965: return
1966: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1967: }
1968: # ------------------------------------------------------------- Aboutme Wrapper
1969:
1970: sub aboutmewrapper {
1971: my ($link,$username,$domain,$target)=@_;
1972: return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
1973: ($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
1974: }
1975:
1976: # ------------------------------------------------------------ Syllabus Wrapper
1977:
1978:
1979: sub syllabuswrapper {
1980: my ($linktext,$coursedir,$domain,$fontcolor)=@_;
1981: if ($fontcolor) {
1982: $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
1983: }
1984: return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
1985: }
1986:
1987: sub track_student_link {
1988: my ($linktext,$sname,$sdom,$target) = @_;
1989: my $link ="/adm/trackstudent";
1990: my $title = 'View recent activity';
1991: if (defined($sname) && $sname !~ /^\s*$/ &&
1992: defined($sdom) && $sdom !~ /^\s*$/) {
1993: $link .= "?selected_student=$sname:$sdom";
1994: $title .= ' of this student';
1995: }
1996: if (defined($target) && $target !~ /^\s*$/) {
1997: $target = qq{target="$target"};
1998: } else {
1999: $target = '';
2000: }
2001: return qq{<a href="$link" title="$title" $target>$linktext</a>};
2002: }
2003:
2004:
2005:
2006: =pod
2007:
2008: =back
2009:
2010: =head1 Access .tab File Data
2011:
2012: =over 4
2013:
2014: =item * languageids()
2015:
2016: returns list of all language ids
2017:
2018: =cut
2019:
2020: sub languageids {
2021: return sort(keys(%language));
2022: }
2023:
2024: =pod
2025:
2026: =item * languagedescription()
2027:
2028: returns description of a specified language id
2029:
2030: =cut
2031:
2032: sub languagedescription {
2033: my $code=shift;
2034: return ($supported_language{$code}?'* ':'').
2035: $language{$code}.
2036: ($supported_language{$code}?' ('.&mt('interface available').')':'');
2037: }
2038:
2039: sub plainlanguagedescription {
2040: my $code=shift;
2041: return $language{$code};
2042: }
2043:
2044: sub supportedlanguagecode {
2045: my $code=shift;
2046: return $supported_language{$code};
2047: }
2048:
2049: =pod
2050:
2051: =item * copyrightids()
2052:
2053: returns list of all copyrights
2054:
2055: =cut
2056:
2057: sub copyrightids {
2058: return sort(keys(%cprtag));
2059: }
2060:
2061: =pod
2062:
2063: =item * copyrightdescription()
2064:
2065: returns description of a specified copyright id
2066:
2067: =cut
2068:
2069: sub copyrightdescription {
2070: return &mt($cprtag{shift(@_)});
2071: }
2072:
2073: =pod
2074:
2075: =item * source_copyrightids()
2076:
2077: returns list of all source copyrights
2078:
2079: =cut
2080:
2081: sub source_copyrightids {
2082: return sort(keys(%scprtag));
2083: }
2084:
2085: =pod
2086:
2087: =item * source_copyrightdescription()
2088:
2089: returns description of a specified source copyright id
2090:
2091: =cut
2092:
2093: sub source_copyrightdescription {
2094: return &mt($scprtag{shift(@_)});
2095: }
2096:
2097: =pod
2098:
2099: =item * filecategories()
2100:
2101: returns list of all file categories
2102:
2103: =cut
2104:
2105: sub filecategories {
2106: return sort(keys(%category_extensions));
2107: }
2108:
2109: =pod
2110:
2111: =item * filecategorytypes()
2112:
2113: returns list of file types belonging to a given file
2114: category
2115:
2116: =cut
2117:
2118: sub filecategorytypes {
2119: return @{$category_extensions{lc($_[0])}};
2120: }
2121:
2122: =pod
2123:
2124: =item * fileembstyle()
2125:
2126: returns embedding style for a specified file type
2127:
2128: =cut
2129:
2130: sub fileembstyle {
2131: return $fe{lc(shift(@_))};
2132: }
2133:
2134:
2135: sub filecategoryselect {
2136: my ($name,$value)=@_;
2137: return &select_form($value,$name,
2138: '' => &mt('Any category'),
2139: map { $_,$_ } sort(keys(%category_extensions)));
2140: }
2141:
2142: =pod
2143:
2144: =item * filedescription()
2145:
2146: returns description for a specified file type
2147:
2148: =cut
2149:
2150: sub filedescription {
2151: my $file_description = $fd{lc(shift())};
2152: $file_description =~ s:([\[\]]):~$1:g;
2153: return &mt($file_description);
2154: }
2155:
2156: =pod
2157:
2158: =item * filedescriptionex()
2159:
2160: returns description for a specified file type with
2161: extra formatting
2162:
2163: =cut
2164:
2165: sub filedescriptionex {
2166: my $ex=shift;
2167: my $file_description = $fd{lc($ex)};
2168: $file_description =~ s:([\[\]]):~$1:g;
2169: return '.'.$ex.' '.&mt($file_description);
2170: }
2171:
2172: # End of .tab access
2173: =pod
2174:
2175: =back
2176:
2177: =cut
2178:
2179: # ------------------------------------------------------------------ File Types
2180: sub fileextensions {
2181: return sort(keys(%fe));
2182: }
2183:
2184: # ----------------------------------------------------------- Display Languages
2185: # returns a hash with all desired display languages
2186: #
2187:
2188: sub display_languages {
2189: my %languages=();
2190: foreach (&preferred_languages()) {
2191: $languages{$_}=1;
2192: }
2193: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
2194: if ($env{'form.displaylanguage'}) {
2195: foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
2196: $languages{$_}=1;
2197: }
2198: }
2199: return %languages;
2200: }
2201:
2202: sub preferred_languages {
2203: my @languages=();
2204: if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
2205: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
2206: $env{'course.'.$env{'request.course.id'}.'.languages'}));
2207: }
2208: if ($env{'environment.languages'}) {
2209: @languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
2210: }
2211: my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
2212: if ($browser) {
2213: @languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
2214: }
2215: if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
2216: @languages=(@languages,
2217: $Apache::lonnet::domain_lang_def{$env{'user.domain'}});
2218: }
2219: if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
2220: @languages=(@languages,
2221: $Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
2222: }
2223: if ($Apache::lonnet::domain_lang_def{
2224: $Apache::lonnet::perlvar{'lonDefDomain'}}) {
2225: @languages=(@languages,
2226: $Apache::lonnet::domain_lang_def{
2227: $Apache::lonnet::perlvar{'lonDefDomain'}});
2228: }
2229: # turn "en-ca" into "en-ca,en"
2230: my @genlanguages;
2231: foreach (@languages) {
2232: unless ($_=~/\w/) { next; }
2233: push (@genlanguages,$_);
2234: if ($_=~/(\-|\_)/) {
2235: push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
2236: }
2237: }
2238: return @genlanguages;
2239: }
2240:
2241: ###############################################################
2242: ## Student Answer Attempts ##
2243: ###############################################################
2244:
2245: =pod
2246:
2247: =head1 Alternate Problem Views
2248:
2249: =over 4
2250:
2251: =item * get_previous_attempt($symb, $username, $domain, $course,
2252: $getattempt, $regexp, $gradesub)
2253:
2254: Return string with previous attempt on problem. Arguments:
2255:
2256: =over 4
2257:
2258: =item * $symb: Problem, including path
2259:
2260: =item * $username: username of the desired student
2261:
2262: =item * $domain: domain of the desired student
2263:
2264: =item * $course: Course ID
2265:
2266: =item * $getattempt: Leave blank for all attempts, otherwise put
2267: something
2268:
2269: =item * $regexp: if string matches this regexp, the string will be
2270: sent to $gradesub
2271:
2272: =item * $gradesub: routine that processes the string if it matches $regexp
2273:
2274: =back
2275:
2276: The output string is a table containing all desired attempts, if any.
2277:
2278: =cut
2279:
2280: sub get_previous_attempt {
2281: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
2282: my $prevattempts='';
2283: no strict 'refs';
2284: if ($symb) {
2285: my (%returnhash)=
2286: &Apache::lonnet::restore($symb,$course,$domain,$username);
2287: if ($returnhash{'version'}) {
2288: my %lasthash=();
2289: my $version;
2290: for ($version=1;$version<=$returnhash{'version'};$version++) {
2291: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
2292: $lasthash{$_}=$returnhash{$version.':'.$_};
2293: }
2294: }
2295: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
2296: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
2297: foreach (sort(keys %lasthash)) {
2298: my ($ign,@parts) = split(/\./,$_);
2299: if ($#parts > 0) {
2300: my $data=$parts[-1];
2301: pop(@parts);
2302: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
2303: } else {
2304: if ($#parts == 0) {
2305: $prevattempts.='<th>'.$parts[0].'</th>';
2306: } else {
2307: $prevattempts.='<th>'.$ign.'</th>';
2308: }
2309: }
2310: }
2311: if ($getattempt eq '') {
2312: for ($version=1;$version<=$returnhash{'version'};$version++) {
2313: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
2314: foreach (sort(keys %lasthash)) {
2315: my $value;
2316: if ($_ =~ /timestamp/) {
2317: $value=scalar(localtime($returnhash{$version.':'.$_}));
2318: } else {
2319: $value=$returnhash{$version.':'.$_};
2320: }
2321: $prevattempts.='<td>'.&Apache::lonnet::unescape($value).' </td>';
2322: }
2323: }
2324: }
2325: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
2326: foreach (sort(keys %lasthash)) {
2327: my $value;
2328: if ($_ =~ /timestamp/) {
2329: $value=scalar(localtime($lasthash{$_}));
2330: } else {
2331: $value=$lasthash{$_};
2332: }
2333: $value=&Apache::lonnet::unescape($value);
2334: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
2335: $prevattempts.='<td>'.$value.' </td>';
2336: }
2337: $prevattempts.='</tr></table></td></tr></table>';
2338: } else {
2339: $prevattempts='Nothing submitted - no attempts.';
2340: }
2341: } else {
2342: $prevattempts='No data.';
2343: }
2344: }
2345:
2346: sub relative_to_absolute {
2347: my ($url,$output)=@_;
2348: my $parser=HTML::TokeParser->new(\$output);
2349: my $token;
2350: my $thisdir=$url;
2351: my @rlinks=();
2352: while ($token=$parser->get_token) {
2353: if ($token->[0] eq 'S') {
2354: if ($token->[1] eq 'a') {
2355: if ($token->[2]->{'href'}) {
2356: $rlinks[$#rlinks+1]=$token->[2]->{'href'};
2357: }
2358: } elsif ($token->[1] eq 'img' || $token->[1] eq 'embed' ) {
2359: $rlinks[$#rlinks+1]=$token->[2]->{'src'};
2360: } elsif ($token->[1] eq 'base') {
2361: $thisdir=$token->[2]->{'href'};
2362: }
2363: }
2364: }
2365: $thisdir=~s-/[^/]*$--;
2366: foreach (@rlinks) {
2367: unless (($_=~/^http:\/\//i) ||
2368: ($_=~/^\//) ||
2369: ($_=~/^javascript:/i) ||
2370: ($_=~/^mailto:/i) ||
2371: ($_=~/^\#/)) {
2372: my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
2373: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
2374: }
2375: }
2376: # -------------------------------------------------- Deal with Applet codebases
2377: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
2378: return $output;
2379: }
2380:
2381: =pod
2382:
2383: =item * get_student_view
2384:
2385: show a snapshot of what student was looking at
2386:
2387: =cut
2388:
2389: sub get_student_view {
2390: my ($symb,$username,$domain,$courseid,$target,$moreenv) = @_;
2391: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2392: my (%form);
2393: my @elements=('symb','courseid','domain','username');
2394: foreach my $element (@elements) {
2395: $form{'grade_'.$element}=eval '$'.$element #'
2396: }
2397: if (defined($moreenv)) {
2398: %form=(%form,%{$moreenv});
2399: }
2400: if (defined($target)) { $form{'grade_target'} = $target; }
2401: $feedurl=&Apache::lonnet::clutter($feedurl);
2402: my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
2403: $userview=~s/\<body[^\>]*\>//gi;
2404: $userview=~s/\<\/body\>//gi;
2405: $userview=~s/\<html\>//gi;
2406: $userview=~s/\<\/html\>//gi;
2407: $userview=~s/\<head\>//gi;
2408: $userview=~s/\<\/head\>//gi;
2409: $userview=~s/action\s*\=/would_be_action\=/gi;
2410: $userview=&relative_to_absolute($feedurl,$userview);
2411: return $userview;
2412: }
2413:
2414: =pod
2415:
2416: =item * get_student_answers()
2417:
2418: show a snapshot of how student was answering problem
2419:
2420: =cut
2421:
2422: sub get_student_answers {
2423: my ($symb,$username,$domain,$courseid,%form) = @_;
2424: my ($map,$id,$feedurl) = &Apache::lonnet::decode_symb($symb);
2425: my (%moreenv);
2426: my @elements=('symb','courseid','domain','username');
2427: foreach my $element (@elements) {
2428: $moreenv{'grade_'.$element}=eval '$'.$element #'
2429: }
2430: $moreenv{'grade_target'}='answer';
2431: %moreenv=(%form,%moreenv);
2432: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
2433: return $userview;
2434: }
2435:
2436: =pod
2437:
2438: =item * &submlink()
2439:
2440: Inputs: $text $uname $udom $symb $target
2441:
2442: Returns: A link to grades.pm such as to see the SUBM view of a student
2443:
2444: =cut
2445:
2446: ###############################################
2447: sub submlink {
2448: my ($text,$uname,$udom,$symb,$target)=@_;
2449: if (!($uname && $udom)) {
2450: (my $cursymb, my $courseid,$udom,$uname)=
2451: &Apache::lonxml::whichuser($symb);
2452: if (!$symb) { $symb=$cursymb; }
2453: }
2454: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2455: $symb=&Apache::lonnet::escape($symb);
2456: if ($target) { $target="target=\"$target\""; }
2457: return '<a href="/adm/grades?&command=submission&'.
2458: 'symb='.$symb.'&student='.$uname.
2459: '&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
2460: }
2461: ##############################################
2462:
2463: =pod
2464:
2465: =item * &pgrdlink()
2466:
2467: Inputs: $text $uname $udom $symb $target
2468:
2469: Returns: A link to grades.pm such as to see the PGRD view of a student
2470:
2471: =cut
2472:
2473: ###############################################
2474: sub pgrdlink {
2475: my $link=&submlink(@_);
2476: $link=~s/(&command=submission)/$1&showgrading=yes/;
2477: return $link;
2478: }
2479: ##############################################
2480:
2481: =pod
2482:
2483: =item * &pprmlink()
2484:
2485: Inputs: $text $uname $udom $symb $target
2486:
2487: Returns: A link to parmset.pm such as to see the PPRM view of a
2488: student andn resource
2489:
2490: =cut
2491:
2492: ###############################################
2493: sub pprmlink {
2494: my ($text,$uname,$udom,$symb,$target)=@_;
2495: if (!($uname && $udom)) {
2496: (my $cursymb, my $courseid,$udom,$uname)=
2497: &Apache::lonxml::whichuser($symb);
2498: if (!$symb) { $symb=$cursymb; }
2499: }
2500: if (!$symb) { $symb=&Apache::lonnet::symbread(); }
2501: $symb=&Apache::lonnet::escape($symb);
2502: if ($target) { $target="target=\"$target\""; }
2503: return '<a href="/adm/parmset?&command=set&'.
2504: 'symb='.$symb.'&uname='.$uname.
2505: '&udom='.$udom.'" '.$target.'>'.$text.'</a>';
2506: }
2507: ##############################################
2508:
2509: =pod
2510:
2511: =back
2512:
2513: =cut
2514:
2515: ###############################################
2516:
2517:
2518: sub timehash {
2519: my @ltime=localtime(shift);
2520: return ( 'seconds' => $ltime[0],
2521: 'minutes' => $ltime[1],
2522: 'hours' => $ltime[2],
2523: 'day' => $ltime[3],
2524: 'month' => $ltime[4]+1,
2525: 'year' => $ltime[5]+1900,
2526: 'weekday' => $ltime[6],
2527: 'dayyear' => $ltime[7]+1,
2528: 'dlsav' => $ltime[8] );
2529: }
2530:
2531: sub maketime {
2532: my %th=@_;
2533: return POSIX::mktime(
2534: ($th{'seconds'},$th{'minutes'},$th{'hours'},
2535: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
2536: }
2537:
2538: #########################################
2539:
2540: sub findallcourses {
2541: my %courses=();
2542: my $now=time;
2543: foreach (keys %env) {
2544: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
2545: my ($starttime,$endtime)=$env{$_};
2546: my $active=1;
2547: if ($starttime) {
2548: if ($now<$starttime) { $active=0; }
2549: }
2550: if ($endtime) {
2551: if ($now>$endtime) { $active=0; }
2552: }
2553: if ($active) { $courses{$1.'_'.$2}=1; }
2554: }
2555: }
2556: return keys %courses;
2557: }
2558:
2559: ###############################################
2560: ###############################################
2561:
2562: =pod
2563:
2564: =head1 Domain Template Functions
2565:
2566: =over 4
2567:
2568: =item * &determinedomain()
2569:
2570: Inputs: $domain (usually will be undef)
2571:
2572: Returns: Determines which domain should be used for designs
2573:
2574: =cut
2575:
2576: ###############################################
2577: sub determinedomain {
2578: my $domain=shift;
2579: if (! $domain) {
2580: # Determine domain if we have not been given one
2581: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
2582: if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
2583: if ($env{'request.role.domain'}) {
2584: $domain=$env{'request.role.domain'};
2585: }
2586: }
2587: return $domain;
2588: }
2589: ###############################################
2590: =pod
2591:
2592: =item * &domainlogo()
2593:
2594: Inputs: $domain (usually will be undef)
2595:
2596: Returns: A link to a domain logo, if the domain logo exists.
2597: If the domain logo does not exist, a description of the domain.
2598:
2599: =cut
2600:
2601: ###############################################
2602: sub domainlogo {
2603: my $domain = &determinedomain(shift);
2604: # See if there is a logo
2605: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
2606: my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
2607: return '<img src="'.$logo.'" alt="'.$domain.'" />';
2608: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
2609: return $Apache::lonnet::domaindescription{$domain};
2610: } else {
2611: return '';
2612: }
2613: }
2614: ##############################################
2615:
2616: =pod
2617:
2618: =item * &designparm()
2619:
2620: Inputs: $which parameter; $domain (usually will be undef)
2621:
2622: Returns: value of designparamter $which
2623:
2624: =cut
2625:
2626: ##############################################
2627: sub designparm {
2628: my ($which,$domain)=@_;
2629: if ($env{'browser.blackwhite'} eq 'on') {
2630: if ($which=~/\.(font|alink|vlink|link)$/) {
2631: return '#000000';
2632: }
2633: if ($which=~/\.(pgbg|sidebg)$/) {
2634: return '#FFFFFF';
2635: }
2636: if ($which=~/\.tabbg$/) {
2637: return '#CCCCCC';
2638: }
2639: }
2640: if ($env{'environment.color.'.$which}) {
2641: return $env{'environment.color.'.$which};
2642: }
2643: $domain=&determinedomain($domain);
2644: if ($designhash{$domain.'.'.$which}) {
2645: return $designhash{$domain.'.'.$which};
2646: } else {
2647: return $designhash{'default.'.$which};
2648: }
2649: }
2650:
2651: ###############################################
2652: ###############################################
2653:
2654: =pod
2655:
2656: =back
2657:
2658: =head1 HTTP Helpers
2659:
2660: =over 4
2661:
2662: =item * &bodytag()
2663:
2664: Returns a uniform header for LON-CAPA web pages.
2665:
2666: Inputs:
2667:
2668: =over 4
2669:
2670: =item * $title, A title to be displayed on the page.
2671:
2672: =item * $function, the current role (can be undef).
2673:
2674: =item * $addentries, extra parameters for the <body> tag.
2675:
2676: =item * $bodyonly, if defined, only return the <body> tag.
2677:
2678: =item * $domain, if defined, force a given domain.
2679:
2680: =item * $forcereg, if page should register as content page (relevant for
2681: text interface only)
2682:
2683: =back
2684:
2685: Returns: A uniform header for LON-CAPA web pages.
2686: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
2687: If $bodyonly is undef or zero, an html string containing a <body> tag and
2688: other decorations will be returned.
2689:
2690: =cut
2691:
2692: sub bodytag {
2693: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle)=@_;
2694: $title=&mt($title);
2695: $function = &get_users_function() if (!$function);
2696: my $img=&designparm($function.'.img',$domain);
2697: my $pgbg=&designparm($function.'.pgbg',$domain);
2698: my $tabbg=&designparm($function.'.tabbg',$domain);
2699: my $font=&designparm($function.'.font',$domain);
2700: my $link=&designparm($function.'.link',$domain);
2701: my $alink=&designparm($function.'.alink',$domain);
2702: my $vlink=&designparm($function.'.vlink',$domain);
2703: my $sidebg=&designparm($function.'.sidebg',$domain);
2704: # Accessibility font enhance
2705: unless ($addentries) { $addentries=''; }
2706: my $addstyle='';
2707: if ($env{'browser.fontenhance'} eq 'on') {
2708: $addstyle=' font-size: x-large;';
2709: }
2710: # role and realm
2711: my ($role,$realm)
2712: =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
2713: # realm
2714: if ($env{'request.course.id'}) {
2715: $realm=
2716: $env{'course.'.$env{'request.course.id'}.'.description'};
2717: }
2718: unless ($realm) { $realm=' '; }
2719: # Set messages
2720: my $messages=&domainlogo($domain);
2721: # Port for miniserver
2722: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
2723: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
2724: # construct main body tag
2725: my $bodytag = <<END;
2726: <style type="text/css">
2727: h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
2728: a:focus { color: red; background: yellow }
2729: </style>
2730: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
2731: style="margin-top: 0px;$addstyle" $addentries>
2732: END
2733: if ($env{'environment.texengine'} eq 'jsMath') {
2734: $bodytag.='<script type="text/javascript">
2735: function NoFontMessage () {}
2736: </script>'."\n".
2737: '<script src="/adm/jsMath/jsMath.js"></script>'."\n";
2738: }
2739:
2740: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
2741: $lonhttpdPort.$img.'" alt="'.$function.'" />';
2742: if ($bodyonly) {
2743: return $bodytag;
2744: } elsif ($env{'browser.interface'} eq 'textual') {
2745: # Accessibility
2746:
2747: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
2748: $forcereg).
2749: '<h1>LON-CAPA: '.$title.'</h1>';
2750: } elsif ($env{'environment.remote'} eq 'off') {
2751: # No Remote
2752: my $roleinfo=(<<ENDROLE);
2753: <td bgcolor="$tabbg" align="right">
2754: <font size="2" face="Arial, Helvetica, sans-serif">
2755: $env{'environment.firstname'}
2756: $env{'environment.middlename'}
2757: $env{'environment.lastname'}
2758: $env{'environment.generation'}
2759: </font>
2760: <br />
2761: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2762: <br />
2763: <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>
2764: </td>
2765: ENDROLE
2766: my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
2767: $font.'"><b>'.$title.'</b></font>';
2768: if ($customtitle) {
2769: $titleinfo = $customtitle;
2770: }
2771:
2772: if ($env{'request.state'} eq 'construct') {
2773: my ($uname,$thisdisfn)=
2774: ($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
2775: my $formaction='/priv/'.$uname.'/'.$thisdisfn;
2776: $formaction=~s/\/+/\//g;
2777: unless ($customtitle) { #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
2778: my $parentpath = '';
2779: my $lastitem = '';
2780: if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
2781: $parentpath = $1;
2782: $lastitem = $2;
2783: } else {
2784: $lastitem = $thisdisfn;
2785: }
2786: $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
2787: '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font> '.
2788: '<form name="dirs" method="post" action="'.$formaction
2789: .'" target="_top"><tt><b>'
2790: .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
2791: .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
2792: .'</form>'
2793: .&Apache::lonmenu::constspaceform();
2794:
2795: }
2796: $forcereg=1;
2797: }
2798: my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
2799: 'cellspacing="3" cellpadding="3">'.
2800: '<tr><td rowspan="3" bgcolor="'.$tabbg.'">'.
2801: $titleinfo.'</td>'.$roleinfo.'</tr></table>';
2802: if ($env{'request.state'} eq 'construct') {
2803: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
2804: } else {
2805: $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
2806: $titletable;
2807: }
2808: return $bodytag;
2809: }
2810:
2811: #
2812: # Top frame rendering, Remote is up
2813: #
2814: my $titleinfo = ' <font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
2815: if ($customtitle) {
2816: $titleinfo = $customtitle;
2817: }
2818: #
2819: # Extra info if you are the DC
2820: my $dc_info = '';
2821: if ($env{'user.adv'} && exists($env{'user.role.dc./'.
2822: $env{'course.'.$env{'request.course.id'}.
2823: '.domain'}.'/'})) {
2824: my $cid = $env{'request.course.id'};
2825: $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
2826: $dc_info = '('.$dc_info.')';
2827: }
2828: #
2829: return(<<ENDBODY);
2830: $bodytag
2831: <table width="100%" cellspacing="0" border="0" cellpadding="0">
2832: <tr><td bgcolor="$sidebg">
2833: $upperleft</td>
2834: <td bgcolor="$sidebg" align="right">$messages </td>
2835: </tr>
2836: <tr>
2837: <td rowspan="3" bgcolor="$tabbg">
2838: $titleinfo $dc_info
2839: </td><td bgcolor="$tabbg" align="right">
2840: <font size="2" face="Arial, Helvetica, sans-serif">
2841: $env{'environment.firstname'}
2842: $env{'environment.middlename'}
2843: $env{'environment.lastname'}
2844: $env{'environment.generation'}
2845: </font>
2846: </td>
2847: </tr>
2848: <tr><td bgcolor="$tabbg" align="right">
2849: <font size="2" face="Arial, Helvetica, sans-serif">$role</font>
2850: </td></tr>
2851: <tr>
2852: <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font> </td></tr>
2853: </table><br />
2854: ENDBODY
2855: }
2856:
2857: ###############################################
2858: ###############################################
2859:
2860: =pod
2861:
2862: =back
2863:
2864: =head1 HTTP Helpers
2865:
2866: =over 4
2867:
2868: =item * &endbodytag()
2869:
2870: Returns a uniform footer for LON-CAPA web pages.
2871:
2872: Inputs:
2873:
2874: =over 4
2875:
2876: =back
2877:
2878: Returns: A uniform footer for LON-CAPA web pages.
2879:
2880: =cut
2881:
2882: sub endbodytag {
2883: my $endbodytag='</body>';
2884: if ($env{'environment.texengine'} eq 'jsMath') {
2885: $endbodytag='<script type="text/javascript">jsMath.Process()</script>'.
2886: "\n".$endbodytag;
2887: }
2888: return $endbodytag;
2889: }
2890:
2891: ###############################################
2892:
2893: =pod
2894:
2895: =item get_users_function
2896:
2897: Used by &bodytag to determine the current users primary role.
2898: Returns either 'student','coordinator','admin', or 'author'.
2899:
2900: =cut
2901:
2902: ###############################################
2903: sub get_users_function {
2904: my $function = 'student';
2905: if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
2906: $function='coordinator';
2907: }
2908: if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
2909: $function='admin';
2910: }
2911: if (($env{'request.role'}=~/^(au|ca)/) ||
2912: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
2913: $function='author';
2914: }
2915: return $function;
2916: }
2917:
2918: ###############################################
2919:
2920: =pod
2921:
2922: =item get_sections
2923:
2924: Determines all the sections for a course including
2925: sections with students and sections containing other roles.
2926: Incoming parameters: domain, course number, reference to
2927: section hash (keys to be section/group IDs), reference to
2928: array containing roles for which sections should be gathered
2929: (optional). If the fourth argument is undefined, sections
2930: are gathered for any role.
2931:
2932: Returns number of sections.
2933:
2934: =cut
2935:
2936: ###############################################
2937: sub get_sections {
2938: my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
2939: if (!($cdom && $cnum)) { return 0; }
2940: my $cid = $cdom.'_'.$cnum;
2941: my $numsections = 0;
2942:
2943: if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
2944: my ($classlist) = &Apache::loncoursedata::get_classlist($cid,$cdom,$cnum);
2945: my $sec_index = &Apache::loncoursedata::CL_SECTION();
2946: my $status_index = &Apache::loncoursedata::CL_STATUS();
2947: while (my ($student,$data) = each %$classlist) {
2948: my ($section,$status) = ($data->[$sec_index],
2949: $data->[$status_index]);
2950: unless ($section eq '-1' || $section =~ /^\s*$/) {
2951: if (!defined($$sectioncount{$section})) { $numsections++; }
2952: $$sectioncount{$section}++;
2953: }
2954: }
2955: }
2956: my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
2957: foreach my $user (sort(keys(%courseroles))) {
2958: if ($user !~ /^(\w{2})/) { next; }
2959: my ($role) = ($user =~ /^(\w{2})/);
2960: if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
2961: my $section;
2962: if ($role eq 'cr' &&
2963: $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
2964: $section=$1;
2965: }
2966: if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
2967: if (!defined($section) || $section eq '-1') { next; }
2968: if (!defined($$sectioncount{$section})) { $numsections++; }
2969: $$sectioncount{$section}++;
2970: }
2971: return $numsections;
2972: }
2973:
2974:
2975: sub get_posted_cgi {
2976: my $r=shift;
2977:
2978: my $buffer;
2979: if ($r->header_in('Content-length')) {
2980: $r->read($buffer,$r->header_in('Content-length'),0);
2981: }
2982: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
2983: my @pairs=split(/&/,$buffer);
2984: my $pair;
2985: foreach $pair (@pairs) {
2986: my ($name,$value) = split(/=/,$pair);
2987: $value =~ tr/+/ /;
2988: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2989: $name =~ tr/+/ /;
2990: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
2991: &add_to_env("form.$name",$value);
2992: }
2993: } else {
2994: my $contentsep=$1;
2995: my @lines = split (/\n/,$buffer);
2996: my $name='';
2997: my $value='';
2998: my $fname='';
2999: my $fmime='';
3000: my $i;
3001: for ($i=0;$i<=$#lines;$i++) {
3002: if ($lines[$i]=~/^$contentsep/) {
3003: if ($name) {
3004: chomp($value);
3005: if ($fname) {
3006: $env{"form.$name.filename"}=$fname;
3007: $env{"form.$name.mimetype"}=$fmime;
3008: } else {
3009: $value=~s/\s+$//s;
3010: }
3011: &add_to_env("form.$name",$value);
3012: }
3013: if ($i<$#lines) {
3014: $i++;
3015: $lines[$i]=~
3016: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
3017: $name=$1;
3018: $value='';
3019: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
3020: $fname=$1;
3021: if
3022: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
3023: $fmime=$1;
3024: $i++;
3025: } else {
3026: $fmime='';
3027: }
3028: } else {
3029: $fname='';
3030: $fmime='';
3031: }
3032: $i++;
3033: }
3034: } else {
3035: $value.=$lines[$i]."\n";
3036: }
3037: }
3038: }
3039: $env{'request.method'}=$ENV{'REQUEST_METHOD'};
3040: $r->method_number(M_GET);
3041: $r->method('GET');
3042: $r->headers_in->unset('Content-length');
3043: }
3044:
3045: =pod
3046:
3047: =item * get_unprocessed_cgi($query,$possible_names)
3048:
3049: Modify the %env hash to contain unprocessed CGI form parameters held in
3050: $query. The parameters listed in $possible_names (an array reference),
3051: will be set in $env{'form.name'} if they do not already exist.
3052:
3053: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
3054: $possible_names is an ref to an array of form element names. As an example:
3055: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
3056: will result in $env{'form.uname'} and $env{'form.udom'} being set.
3057:
3058: =cut
3059:
3060: sub get_unprocessed_cgi {
3061: my ($query,$possible_names)= @_;
3062: # $Apache::lonxml::debug=1;
3063: foreach (split(/&/,$query)) {
3064: my ($name, $value) = split(/=/,$_);
3065: $name = &Apache::lonnet::unescape($name);
3066: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
3067: $value =~ tr/+/ /;
3068: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
3069: &Apache::lonxml::debug("Seting :$name: to :$value:");
3070: unless (defined($env{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
3071: }
3072: }
3073: }
3074:
3075: =pod
3076:
3077: =item * cacheheader()
3078:
3079: returns cache-controlling header code
3080:
3081: =cut
3082:
3083: sub cacheheader {
3084: unless ($env{'request.method'} eq 'GET') { return ''; }
3085: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
3086: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
3087: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
3088: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
3089: return $output;
3090: }
3091:
3092: =pod
3093:
3094: =item * no_cache($r)
3095:
3096: specifies header code to not have cache
3097:
3098: =cut
3099:
3100: sub no_cache {
3101: my ($r) = @_;
3102: if ($ENV{'REQUEST_METHOD'} ne 'GET' &&
3103: $env{'request.method'} ne 'GET') { return ''; }
3104: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime(time));
3105: $r->no_cache(1);
3106: $r->header_out("Expires" => $date);
3107: $r->header_out("Pragma" => "no-cache");
3108: }
3109:
3110: sub content_type {
3111: my ($r,$type,$charset) = @_;
3112: if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
3113: unless ($charset) {
3114: $charset=&Apache::lonlocal::current_encoding;
3115: }
3116: if ($charset) { $type.='; charset='.$charset; }
3117: if ($r) {
3118: $r->content_type($type);
3119: } else {
3120: print("Content-type: $type\n\n");
3121: }
3122: }
3123:
3124: =pod
3125:
3126: =item * add_to_env($name,$value)
3127:
3128: adds $name to the %env hash with value
3129: $value, if $name already exists, the entry is converted to an array
3130: reference and $value is added to the array.
3131:
3132: =cut
3133:
3134: sub add_to_env {
3135: my ($name,$value)=@_;
3136: if (defined($env{$name})) {
3137: if (ref($env{$name})) {
3138: #already have multiple values
3139: push(@{ $env{$name} },$value);
3140: } else {
3141: #first time seeing multiple values, convert hash entry to an arrayref
3142: my $first=$env{$name};
3143: undef($env{$name});
3144: push(@{ $env{$name} },$first,$value);
3145: }
3146: } else {
3147: $env{$name}=$value;
3148: }
3149: }
3150:
3151: =pod
3152:
3153: =item * get_env_multiple($name)
3154:
3155: gets $name from the %env hash, it seemlessly handles the cases where multiple
3156: values may be defined and end up as an array ref.
3157:
3158: returns an array of values
3159:
3160: =cut
3161:
3162: sub get_env_multiple {
3163: my ($name) = @_;
3164: my @values;
3165: if (defined($env{$name})) {
3166: # exists is it an array
3167: if (ref($env{$name})) {
3168: @values=@{ $env{$name} };
3169: } else {
3170: $values[0]=$env{$name};
3171: }
3172: }
3173: return(@values);
3174: }
3175:
3176:
3177: =pod
3178:
3179: =back
3180:
3181: =head1 CSV Upload/Handling functions
3182:
3183: =over 4
3184:
3185: =item * upfile_store($r)
3186:
3187: Store uploaded file, $r should be the HTTP Request object,
3188: needs $env{'form.upfile'}
3189: returns $datatoken to be put into hidden field
3190:
3191: =cut
3192:
3193: sub upfile_store {
3194: my $r=shift;
3195: $env{'form.upfile'}=~s/\r/\n/gs;
3196: $env{'form.upfile'}=~s/\f/\n/gs;
3197: $env{'form.upfile'}=~s/\n+/\n/gs;
3198: $env{'form.upfile'}=~s/\n+$//gs;
3199:
3200: my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
3201: '_enroll_'.$env{'request.course.id'}.'_'.time.'_'.$$;
3202: {
3203: my $datafile = $r->dir_config('lonDaemons').
3204: '/tmp/'.$datatoken.'.tmp';
3205: if ( open(my $fh,">$datafile") ) {
3206: print $fh $env{'form.upfile'};
3207: close($fh);
3208: }
3209: }
3210: return $datatoken;
3211: }
3212:
3213: =pod
3214:
3215: =item * load_tmp_file($r)
3216:
3217: Load uploaded file from tmp, $r should be the HTTP Request object,
3218: needs $env{'form.datatoken'},
3219: sets $env{'form.upfile'} to the contents of the file
3220:
3221: =cut
3222:
3223: sub load_tmp_file {
3224: my $r=shift;
3225: my @studentdata=();
3226: {
3227: my $studentfile = $r->dir_config('lonDaemons').
3228: '/tmp/'.$env{'form.datatoken'}.'.tmp';
3229: if ( open(my $fh,"<$studentfile") ) {
3230: @studentdata=<$fh>;
3231: close($fh);
3232: }
3233: }
3234: $env{'form.upfile'}=join('',@studentdata);
3235: }
3236:
3237: =pod
3238:
3239: =item * upfile_record_sep()
3240:
3241: Separate uploaded file into records
3242: returns array of records,
3243: needs $env{'form.upfile'} and $env{'form.upfiletype'}
3244:
3245: =cut
3246:
3247: sub upfile_record_sep {
3248: if ($env{'form.upfiletype'} eq 'xml') {
3249: } else {
3250: my @records;
3251: foreach my $line (split(/\n/,$env{'form.upfile'})) {
3252: if ($line=~/^\s*$/) { next; }
3253: push(@records,$line);
3254: }
3255: return @records;
3256: }
3257: }
3258:
3259: =pod
3260:
3261: =item * record_sep($record)
3262:
3263: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
3264:
3265: =cut
3266:
3267: sub record_sep {
3268: my $record=shift;
3269: my %components=();
3270: if ($env{'form.upfiletype'} eq 'xml') {
3271: } elsif ($env{'form.upfiletype'} eq 'space') {
3272: my $i=0;
3273: foreach (split(/\s+/,$record)) {
3274: my $field=$_;
3275: $field=~s/^(\"|\')//;
3276: $field=~s/(\"|\')$//;
3277: $components{$i}=$field;
3278: $i++;
3279: }
3280: } elsif ($env{'form.upfiletype'} eq 'tab') {
3281: my $i=0;
3282: foreach (split(/\t/,$record)) {
3283: my $field=$_;
3284: $field=~s/^(\"|\')//;
3285: $field=~s/(\"|\')$//;
3286: $components{$i}=$field;
3287: $i++;
3288: }
3289: } else {
3290: my @allfields=split(/\,/,$record);
3291: my $i=0;
3292: my $j;
3293: for ($j=0;$j<=$#allfields;$j++) {
3294: my $field=$allfields[$j];
3295: if ($field=~/^\s*(\"|\')/) {
3296: my $delimiter=$1;
3297: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
3298: $j++;
3299: $field.=','.$allfields[$j];
3300: }
3301: $field=~s/^\s*$delimiter//;
3302: $field=~s/$delimiter\s*$//;
3303: }
3304: $components{$i}=$field;
3305: $i++;
3306: }
3307: }
3308: return %components;
3309: }
3310:
3311: ######################################################
3312: ######################################################
3313:
3314: =pod
3315:
3316: =item * upfile_select_html()
3317:
3318: Return HTML code to select a file from the users machine and specify
3319: the file type.
3320:
3321: =cut
3322:
3323: ######################################################
3324: ######################################################
3325: sub upfile_select_html {
3326: my %Types = (
3327: csv => &mt('CSV (comma separated values, spreadsheet)'),
3328: space => &mt('Space separated'),
3329: tab => &mt('Tabulator separated'),
3330: # xml => &mt('HTML/XML'),
3331: );
3332: my $Str = '<input type="file" name="upfile" size="50" />'.
3333: '<br />Type: <select name="upfiletype">';
3334: foreach my $type (sort(keys(%Types))) {
3335: $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
3336: }
3337: $Str .= "</select>\n";
3338: return $Str;
3339: }
3340:
3341: ######################################################
3342: ######################################################
3343:
3344: =pod
3345:
3346: =item * csv_print_samples($r,$records)
3347:
3348: Prints a table of sample values from each column uploaded $r is an
3349: Apache Request ref, $records is an arrayref from
3350: &Apache::loncommon::upfile_record_sep
3351:
3352: =cut
3353:
3354: ######################################################
3355: ######################################################
3356: sub csv_print_samples {
3357: my ($r,$records) = @_;
3358: my (%sone,%stwo,%sthree);
3359: %sone=&record_sep($$records[0]);
3360: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3361: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3362: #
3363: $r->print(&mt('Samples').'<br /><table border="2"><tr>');
3364: foreach (sort({$a <=> $b} keys(%sone))) {
3365: $r->print('<th>'.&mt('Column [_1]',($_+1)).'</th>'); }
3366: $r->print('</tr>');
3367: foreach my $hash (\%sone,\%stwo,\%sthree) {
3368: $r->print('<tr>');
3369: foreach (sort({$a <=> $b} keys(%sone))) {
3370: $r->print('<td>');
3371: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
3372: $r->print('</td>');
3373: }
3374: $r->print('</tr>');
3375: }
3376: $r->print('</tr></table><br />'."\n");
3377: }
3378:
3379: ######################################################
3380: ######################################################
3381:
3382: =pod
3383:
3384: =item * csv_print_select_table($r,$records,$d)
3385:
3386: Prints a table to create associations between values and table columns.
3387:
3388: $r is an Apache Request ref,
3389: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3390: $d is an array of 2 element arrays (internal name, displayed name,defaultcol)
3391:
3392: =cut
3393:
3394: ######################################################
3395: ######################################################
3396: sub csv_print_select_table {
3397: my ($r,$records,$d) = @_;
3398: my $i=0;my %sone;
3399: %sone=&record_sep($$records[0]);
3400: $r->print(&mt('Associate columns with student attributes.')."\n".
3401: '<table border="2"><tr>'.
3402: '<th>'.&mt('Attribute').'</th>'.
3403: '<th>'.&mt('Column').'</th></tr>'."\n");
3404: foreach (@$d) {
3405: my ($value,$display,$defaultcol)=@{ $_ };
3406: $r->print('<tr><td>'.$display.'</td>');
3407:
3408: $r->print('<td><select name=f'.$i.
3409: ' onchange="javascript:flip(this.form,'.$i.');">');
3410: $r->print('<option value="none"></option>');
3411: foreach (sort({$a <=> $b} keys(%sone))) {
3412: $r->print('<option value="'.$_.'"'.
3413: ($_ eq $defaultcol ? ' selected="selected" ' : '').
3414: '>Column '.($_+1).'</option>');
3415: }
3416: $r->print('</select></td></tr>'."\n");
3417: $i++;
3418: }
3419: $i--;
3420: return $i;
3421: }
3422:
3423: ######################################################
3424: ######################################################
3425:
3426: =pod
3427:
3428: =item * csv_samples_select_table($r,$records,$d)
3429:
3430: Prints a table of sample values from the upload and can make associate samples to internal names.
3431:
3432: $r is an Apache Request ref,
3433: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
3434: $d is an array of 2 element arrays (internal name, displayed name)
3435:
3436: =cut
3437:
3438: ######################################################
3439: ######################################################
3440: sub csv_samples_select_table {
3441: my ($r,$records,$d) = @_;
3442: my %sone; my %stwo; my %sthree;
3443: my $i=0;
3444: #
3445: $r->print('<table border=2><tr><th>'.
3446: &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
3447: %sone=&record_sep($$records[0]);
3448: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
3449: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
3450: #
3451: foreach (sort keys %sone) {
3452: $r->print('<tr><td><select name="f'.$i.'"'.
3453: ' onchange="javascript:flip(this.form,'.$i.');">');
3454: foreach (@$d) {
3455: my ($value,$display,$defaultcol)=@{ $_ };
3456: $r->print('<option value="'.$value.'"'.
3457: ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
3458: $display.'</option>');
3459: }
3460: $r->print('</select></td><td>');
3461: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
3462: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
3463: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
3464: $r->print('</td></tr>');
3465: $i++;
3466: }
3467: $i--;
3468: return($i);
3469: }
3470:
3471: ######################################################
3472: ######################################################
3473:
3474: =pod
3475:
3476: =item clean_excel_name($name)
3477:
3478: Returns a replacement for $name which does not contain any illegal characters.
3479:
3480: =cut
3481:
3482: ######################################################
3483: ######################################################
3484: sub clean_excel_name {
3485: my ($name) = @_;
3486: $name =~ s/[:\*\?\/\\]//g;
3487: if (length($name) > 31) {
3488: $name = substr($name,0,31);
3489: }
3490: return $name;
3491: }
3492:
3493: =pod
3494:
3495: =item * check_if_partid_hidden($id,$symb,$udom,$uname)
3496:
3497: Returns either 1 or undef
3498:
3499: 1 if the part is to be hidden, undef if it is to be shown
3500:
3501: Arguments are:
3502:
3503: $id the id of the part to be checked
3504: $symb, optional the symb of the resource to check
3505: $udom, optional the domain of the user to check for
3506: $uname, optional the username of the user to check for
3507:
3508: =cut
3509:
3510: sub check_if_partid_hidden {
3511: my ($id,$symb,$udom,$uname) = @_;
3512: my $hiddenparts=&Apache::lonnet::EXT('resource.0.hiddenparts',
3513: $symb,$udom,$uname);
3514: my $truth=1;
3515: #if the string starts with !, then the list is the list to show not hide
3516: if ($hiddenparts=~s/^\s*!//) { $truth=undef; }
3517: my @hiddenlist=split(/,/,$hiddenparts);
3518: foreach my $checkid (@hiddenlist) {
3519: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return $truth; }
3520: }
3521: return !$truth;
3522: }
3523:
3524:
3525: ############################################################
3526: ############################################################
3527:
3528: =pod
3529:
3530: =back
3531:
3532: =head1 cgi-bin script and graphing routines
3533:
3534: =over 4
3535:
3536: =item get_cgi_id
3537:
3538: Inputs: none
3539:
3540: Returns an id which can be used to pass environment variables
3541: to various cgi-bin scripts. These environment variables will
3542: be removed from the users environment after a given time by
3543: the routine &Apache::lonnet::transfer_profile_to_env.
3544:
3545: =cut
3546:
3547: ############################################################
3548: ############################################################
3549: my $uniq=0;
3550: sub get_cgi_id {
3551: $uniq=($uniq+1)%100000;
3552: return (time.'_'.$uniq);
3553: }
3554:
3555: ############################################################
3556: ############################################################
3557:
3558: =pod
3559:
3560: =item DrawBarGraph
3561:
3562: Facilitates the plotting of data in a (stacked) bar graph.
3563: Puts plot definition data into the users environment in order for
3564: graph.png to plot it. Returns an <img> tag for the plot.
3565: The bars on the plot are labeled '1','2',...,'n'.
3566:
3567: Inputs:
3568:
3569: =over 4
3570:
3571: =item $Title: string, the title of the plot
3572:
3573: =item $xlabel: string, text describing the X-axis of the plot
3574:
3575: =item $ylabel: string, text describing the Y-axis of the plot
3576:
3577: =item $Max: scalar, the maximum Y value to use in the plot
3578: If $Max is < any data point, the graph will not be rendered.
3579:
3580: =item $colors: array ref holding the colors to be used for the data sets when
3581: they are plotted. If undefined, default values will be used.
3582:
3583: =item $labels: array ref holding the labels to use on the x-axis for the bars.
3584:
3585: =item @Values: An array of array references. Each array reference holds data
3586: to be plotted in a stacked bar chart.
3587:
3588: =item If the final element of @Values is a hash reference the key/value
3589: pairs will be added to the graph definition.
3590:
3591: =back
3592:
3593: Returns:
3594:
3595: An <img> tag which references graph.png and the appropriate identifying
3596: information for the plot.
3597:
3598: =cut
3599:
3600: ############################################################
3601: ############################################################
3602: sub DrawBarGraph {
3603: my ($Title,$xlabel,$ylabel,$Max,$colors,$labels,@Values)=@_;
3604: #
3605: if (! defined($colors)) {
3606: $colors = ['#33ff00',
3607: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
3608: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
3609: ];
3610: }
3611: my $extra_settings = {};
3612: if (ref($Values[-1]) eq 'HASH') {
3613: $extra_settings = pop(@Values);
3614: }
3615: #
3616: my $identifier = &get_cgi_id();
3617: my $id = 'cgi.'.$identifier;
3618: if (! @Values || ref($Values[0]) ne 'ARRAY') {
3619: return '';
3620: }
3621: #
3622: my @Labels;
3623: if (defined($labels)) {
3624: @Labels = @$labels;
3625: } else {
3626: for (my $i=0;$i<@{$Values[0]};$i++) {
3627: push (@Labels,$i+1);
3628: }
3629: }
3630: #
3631: my $NumBars = scalar(@{$Values[0]});
3632: if ($NumBars < scalar(@Labels)) { $NumBars = scalar(@Labels); }
3633: my %ValuesHash;
3634: my $NumSets=1;
3635: foreach my $array (@Values) {
3636: next if (! ref($array));
3637: $ValuesHash{$id.'.data.'.$NumSets++} =
3638: join(',',@$array);
3639: }
3640: #
3641: my ($height,$width,$xskip,$bar_width) = (200,120,1,15);
3642: if ($NumBars < 3) {
3643: $width = 120+$NumBars*32;
3644: $xskip = 1;
3645: $bar_width = 30;
3646: } elsif ($NumBars < 5) {
3647: $width = 120+$NumBars*20;
3648: $xskip = 1;
3649: $bar_width = 20;
3650: } elsif ($NumBars < 10) {
3651: $width = 120+$NumBars*15;
3652: $xskip = 1;
3653: $bar_width = 15;
3654: } elsif ($NumBars <= 25) {
3655: $width = 120+$NumBars*11;
3656: $xskip = 5;
3657: $bar_width = 8;
3658: } elsif ($NumBars <= 50) {
3659: $width = 120+$NumBars*8;
3660: $xskip = 5;
3661: $bar_width = 4;
3662: } else {
3663: $width = 120+$NumBars*8;
3664: $xskip = 5;
3665: $bar_width = 4;
3666: }
3667: #
3668: $Max = 1 if ($Max < 1);
3669: if ( int($Max) < $Max ) {
3670: $Max++;
3671: $Max = int($Max);
3672: }
3673: $Title = '' if (! defined($Title));
3674: $xlabel = '' if (! defined($xlabel));
3675: $ylabel = '' if (! defined($ylabel));
3676: $ValuesHash{$id.'.title'} = &Apache::lonnet::escape($Title);
3677: $ValuesHash{$id.'.xlabel'} = &Apache::lonnet::escape($xlabel);
3678: $ValuesHash{$id.'.ylabel'} = &Apache::lonnet::escape($ylabel);
3679: $ValuesHash{$id.'.y_max_value'} = $Max;
3680: $ValuesHash{$id.'.NumBars'} = $NumBars;
3681: $ValuesHash{$id.'.NumSets'} = $NumSets;
3682: $ValuesHash{$id.'.PlotType'} = 'bar';
3683: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3684: $ValuesHash{$id.'.height'} = $height;
3685: $ValuesHash{$id.'.width'} = $width;
3686: $ValuesHash{$id.'.xskip'} = $xskip;
3687: $ValuesHash{$id.'.bar_width'} = $bar_width;
3688: $ValuesHash{$id.'.labels'} = join(',',@Labels);
3689: #
3690: # Deal with other parameters
3691: while (my ($key,$value) = each(%$extra_settings)) {
3692: $ValuesHash{$id.'.'.$key} = $value;
3693: }
3694: #
3695: &Apache::lonnet::appenv(%ValuesHash);
3696: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3697: }
3698:
3699: ############################################################
3700: ############################################################
3701:
3702: =pod
3703:
3704: =item DrawXYGraph
3705:
3706: Facilitates the plotting of data in an XY graph.
3707: Puts plot definition data into the users environment in order for
3708: graph.png to plot it. Returns an <img> tag for the plot.
3709:
3710: Inputs:
3711:
3712: =over 4
3713:
3714: =item $Title: string, the title of the plot
3715:
3716: =item $xlabel: string, text describing the X-axis of the plot
3717:
3718: =item $ylabel: string, text describing the Y-axis of the plot
3719:
3720: =item $Max: scalar, the maximum Y value to use in the plot
3721: If $Max is < any data point, the graph will not be rendered.
3722:
3723: =item $colors: Array ref containing the hex color codes for the data to be
3724: plotted in. If undefined, default values will be used.
3725:
3726: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3727:
3728: =item $Ydata: Array ref containing Array refs.
3729: Each of the contained arrays will be plotted as a separate curve.
3730:
3731: =item %Values: hash indicating or overriding any default values which are
3732: passed to graph.png.
3733: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3734:
3735: =back
3736:
3737: Returns:
3738:
3739: An <img> tag which references graph.png and the appropriate identifying
3740: information for the plot.
3741:
3742: =cut
3743:
3744: ############################################################
3745: ############################################################
3746: sub DrawXYGraph {
3747: my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
3748: #
3749: # Create the identifier for the graph
3750: my $identifier = &get_cgi_id();
3751: my $id = 'cgi.'.$identifier;
3752: #
3753: $Title = '' if (! defined($Title));
3754: $xlabel = '' if (! defined($xlabel));
3755: $ylabel = '' if (! defined($ylabel));
3756: my %ValuesHash =
3757: (
3758: $id.'.title' => &Apache::lonnet::escape($Title),
3759: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3760: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3761: $id.'.y_max_value'=> $Max,
3762: $id.'.labels' => join(',',@$Xlabels),
3763: $id.'.PlotType' => 'XY',
3764: );
3765: #
3766: if (defined($colors) && ref($colors) eq 'ARRAY') {
3767: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3768: }
3769: #
3770: if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
3771: return '';
3772: }
3773: my $NumSets=1;
3774: foreach my $array (@{$Ydata}){
3775: next if (! ref($array));
3776: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3777: }
3778: $ValuesHash{$id.'.NumSets'} = $NumSets-1;
3779: #
3780: # Deal with other parameters
3781: while (my ($key,$value) = each(%Values)) {
3782: $ValuesHash{$id.'.'.$key} = $value;
3783: }
3784: #
3785: &Apache::lonnet::appenv(%ValuesHash);
3786: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3787: }
3788:
3789: ############################################################
3790: ############################################################
3791:
3792: =pod
3793:
3794: =item DrawXYYGraph
3795:
3796: Facilitates the plotting of data in an XY graph with two Y axes.
3797: Puts plot definition data into the users environment in order for
3798: graph.png to plot it. Returns an <img> tag for the plot.
3799:
3800: Inputs:
3801:
3802: =over 4
3803:
3804: =item $Title: string, the title of the plot
3805:
3806: =item $xlabel: string, text describing the X-axis of the plot
3807:
3808: =item $ylabel: string, text describing the Y-axis of the plot
3809:
3810: =item $colors: Array ref containing the hex color codes for the data to be
3811: plotted in. If undefined, default values will be used.
3812:
3813: =item $Xlabels: Array ref containing the labels to be used for the X-axis.
3814:
3815: =item $Ydata1: The first data set
3816:
3817: =item $Min1: The minimum value of the left Y-axis
3818:
3819: =item $Max1: The maximum value of the left Y-axis
3820:
3821: =item $Ydata2: The second data set
3822:
3823: =item $Min2: The minimum value of the right Y-axis
3824:
3825: =item $Max2: The maximum value of the left Y-axis
3826:
3827: =item %Values: hash indicating or overriding any default values which are
3828: passed to graph.png.
3829: Possible values are: width, xskip, x_ticks, x_tick_offset, among others.
3830:
3831: =back
3832:
3833: Returns:
3834:
3835: An <img> tag which references graph.png and the appropriate identifying
3836: information for the plot.
3837:
3838: =cut
3839:
3840: ############################################################
3841: ############################################################
3842: sub DrawXYYGraph {
3843: my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
3844: $Ydata2,$Min2,$Max2,%Values)=@_;
3845: #
3846: # Create the identifier for the graph
3847: my $identifier = &get_cgi_id();
3848: my $id = 'cgi.'.$identifier;
3849: #
3850: $Title = '' if (! defined($Title));
3851: $xlabel = '' if (! defined($xlabel));
3852: $ylabel = '' if (! defined($ylabel));
3853: my %ValuesHash =
3854: (
3855: $id.'.title' => &Apache::lonnet::escape($Title),
3856: $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
3857: $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
3858: $id.'.labels' => join(',',@$Xlabels),
3859: $id.'.PlotType' => 'XY',
3860: $id.'.NumSets' => 2,
3861: $id.'.two_axes' => 1,
3862: $id.'.y1_max_value' => $Max1,
3863: $id.'.y1_min_value' => $Min1,
3864: $id.'.y2_max_value' => $Max2,
3865: $id.'.y2_min_value' => $Min2,
3866: );
3867: #
3868: if (defined($colors) && ref($colors) eq 'ARRAY') {
3869: $ValuesHash{$id.'.Colors'} = join(',',@{$colors});
3870: }
3871: #
3872: if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
3873: ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
3874: return '';
3875: }
3876: my $NumSets=1;
3877: foreach my $array ($Ydata1,$Ydata2){
3878: next if (! ref($array));
3879: $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
3880: }
3881: #
3882: # Deal with other parameters
3883: while (my ($key,$value) = each(%Values)) {
3884: $ValuesHash{$id.'.'.$key} = $value;
3885: }
3886: #
3887: &Apache::lonnet::appenv(%ValuesHash);
3888: return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
3889: }
3890:
3891: ############################################################
3892: ############################################################
3893:
3894: =pod
3895:
3896: =back
3897:
3898: =head1 Statistics helper routines?
3899:
3900: Bad place for them but what the hell.
3901:
3902: =over 4
3903:
3904: =item &chartlink
3905:
3906: Returns a link to the chart for a specific student.
3907:
3908: Inputs:
3909:
3910: =over 4
3911:
3912: =item $linktext: The text of the link
3913:
3914: =item $sname: The students username
3915:
3916: =item $sdomain: The students domain
3917:
3918: =back
3919:
3920: =back
3921:
3922: =cut
3923:
3924: ############################################################
3925: ############################################################
3926: sub chartlink {
3927: my ($linktext, $sname, $sdomain) = @_;
3928: my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
3929: '&SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
3930: '&chartoutputmode='.HTML::Entities::encode('html, with all links').
3931: '">'.$linktext.'</a>';
3932: }
3933:
3934: #######################################################
3935: #######################################################
3936:
3937: =pod
3938:
3939: =head1 Course Environment Routines
3940:
3941: =over 4
3942:
3943: =item &restore_course_settings
3944:
3945: =item &store_course_settings
3946:
3947: Restores/Store indicated form parameters from the course environment.
3948: Will not overwrite existing values of the form parameters.
3949:
3950: Inputs:
3951: a scalar describing the data (e.g. 'chart', 'problem_analysis')
3952:
3953: a hash ref describing the data to be stored. For example:
3954:
3955: %Save_Parameters = ('Status' => 'scalar',
3956: 'chartoutputmode' => 'scalar',
3957: 'chartoutputdata' => 'scalar',
3958: 'Section' => 'array',
3959: 'StudentData' => 'array',
3960: 'Maps' => 'array');
3961:
3962: Returns: both routines return nothing
3963:
3964: =cut
3965:
3966: #######################################################
3967: #######################################################
3968: sub store_course_settings {
3969: # save to the environment
3970: # appenv the same items, just to be safe
3971: my $courseid = $env{'request.course.id'};
3972: my $coursedom = $env{'course.'.$courseid.'.domain'};
3973: my ($prefix,$Settings) = @_;
3974: my %SaveHash;
3975: my %AppHash;
3976: while (my ($setting,$type) = each(%$Settings)) {
3977: my $basename = 'internal.'.$prefix.'.'.$setting;
3978: my $envname = 'course.'.$courseid.'.'.$basename;
3979: if (exists($env{'form.'.$setting})) {
3980: # Save this value away
3981: if ($type eq 'scalar' &&
3982: (! exists($env{$envname}) ||
3983: $env{$envname} ne $env{'form.'.$setting})) {
3984: $SaveHash{$basename} = $env{'form.'.$setting};
3985: $AppHash{$envname} = $env{'form.'.$setting};
3986: } elsif ($type eq 'array') {
3987: my $stored_form;
3988: if (ref($env{'form.'.$setting})) {
3989: $stored_form = join(',',
3990: map {
3991: &Apache::lonnet::escape($_);
3992: } sort(@{$env{'form.'.$setting}}));
3993: } else {
3994: $stored_form =
3995: &Apache::lonnet::escape($env{'form.'.$setting});
3996: }
3997: # Determine if the array contents are the same.
3998: if ($stored_form ne $env{$envname}) {
3999: $SaveHash{$basename} = $stored_form;
4000: $AppHash{$envname} = $stored_form;
4001: }
4002: }
4003: }
4004: }
4005: my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
4006: $coursedom,
4007: $env{'course.'.$courseid.'.num'});
4008: if ($put_result !~ /^(ok|delayed)/) {
4009: &Apache::lonnet::logthis('unable to save form parameters, '.
4010: 'got error:'.$put_result);
4011: }
4012: # Make sure these settings stick around in this session, too
4013: &Apache::lonnet::appenv(%AppHash);
4014: return;
4015: }
4016:
4017: sub restore_course_settings {
4018: my $courseid = $env{'request.course.id'};
4019: my ($prefix,$Settings) = @_;
4020: while (my ($setting,$type) = each(%$Settings)) {
4021: next if (exists($env{'form.'.$setting}));
4022: my $envname = 'course.'.$courseid.'.internal.'.$prefix.
4023: '.'.$setting;
4024: if (exists($env{$envname})) {
4025: if ($type eq 'scalar') {
4026: $env{'form.'.$setting} = $env{$envname};
4027: } elsif ($type eq 'array') {
4028: $env{'form.'.$setting} = [
4029: map {
4030: &Apache::lonnet::unescape($_);
4031: } split(',',$env{$envname})
4032: ];
4033: }
4034: }
4035: }
4036: }
4037:
4038: ############################################################
4039: ############################################################
4040:
4041: sub propath {
4042: my ($udom,$uname)=@_;
4043: $udom=~s/\W//g;
4044: $uname=~s/\W//g;
4045: my $subdir=$uname.'__';
4046: $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
4047: my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
4048: return $proname;
4049: }
4050:
4051: sub icon {
4052: my ($file)=@_;
4053: my $curfext = (split(/\./,$file))[-1];
4054: my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
4055: my $embstyle = &Apache::loncommon::fileembstyle($curfext);
4056: if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
4057: if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
4058: $Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4059: $curfext.".gif") {
4060: $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/'.
4061: $curfext.".gif";
4062: }
4063: }
4064: return &lonhttpdurl($iconname);
4065: }
4066:
4067: sub lonhttpdurl {
4068: my ($url)=@_;
4069: my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
4070: if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
4071: return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
4072: }
4073:
4074: sub connection_aborted {
4075: my ($r)=@_;
4076: $r->print(" ");$r->rflush();
4077: my $c = $r->connection;
4078: return $c->aborted();
4079: }
4080:
4081: # Escapes strings that may have embedded 's that will be put into
4082: # strings as 'strings'.
4083: sub escape_single {
4084: my ($input) = @_;
4085: $input =~ s/\\/\\\\/g; # Escape the \'s..(must be first)>
4086: $input =~ s/\'/\\\'/g; # Esacpe the 's....
4087: return $input;
4088: }
4089:
4090: # Same as escape_single, but escape's "'s This
4091: # can be used for "strings"
4092: sub escape_double {
4093: my ($input) = @_;
4094: $input =~ s/\\/\\\\/g; # Escape the /'s..(must be first)>
4095: $input =~ s/\"/\\\"/g; # Esacpe the "s....
4096: return $input;
4097: }
4098:
4099: # Escapes the last element of a full URL.
4100: sub escape_url {
4101: my ($url) = @_;
4102: my @urlslices = split(/\//, $url,-1);
4103: my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
4104: return join('/',@urlslices).'/'.$lastitem;
4105: }
4106: =pod
4107:
4108: =back
4109:
4110: =cut
4111:
4112: 1;
4113: __END__;
4114:
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