Annotation of loncom/interface/loncommon.pm, revision 1.90
1.10 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # a pile of common routines
1.10 albertel 3: #
1.90 ! www 4: # $Id: loncommon.pm,v 1.89 2003/03/20 19:20:31 www Exp $
1.10 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.12 harris41 28: # YEAR=2001
29: # 2/13-12/7 Guy Albertelli
1.18 www 30: # 12/21 Gerd Kortemeyer
1.22 www 31: # 12/25,12/28 Gerd Kortemeyer
1.23 www 32: # YEAR=2002
33: # 1/4 Gerd Kortemeyer
1.43 ng 34: # 6/24,7/2 H. K. Ng
1.1 albertel 35:
36: # Makes a table out of the previous attempts
1.2 albertel 37: # Inputs result_from_symbread, user, domain, course_id
1.16 harris41 38: # Reads in non-network-related .tab files
1.1 albertel 39:
1.35 matthew 40: # POD header:
41:
1.45 matthew 42: =pod
43:
1.35 matthew 44: =head1 NAME
45:
46: Apache::loncommon - pile of common routines
47:
48: =head1 SYNOPSIS
49:
50: Referenced by other mod_perl Apache modules.
51:
52: Invocation:
53: &Apache::loncommon::SUBROUTINENAME(ARGUMENTS);
54:
55: =head1 INTRODUCTION
56:
57: Common collection of used subroutines. This collection helps remove
58: redundancy from other modules and increase efficiency of memory usage.
59:
60: Current things done:
61:
62: Makes a table out of the previous homework attempts
63: Inputs result_from_symbread, user, domain, course_id
64: Reads in non-network-related .tab files
65:
66: This is part of the LearningOnline Network with CAPA project
67: described at http://www.lon-capa.org.
68:
1.41 ng 69: =head2 General Subroutines
1.35 matthew 70:
71: =over 4
72:
73: =cut
74:
75: # End of POD header
1.1 albertel 76: package Apache::loncommon;
77:
78: use strict;
1.22 www 79: use Apache::lonnet();
1.46 matthew 80: use GDBM_File;
1.51 www 81: use POSIX qw(strftime mktime);
1.1 albertel 82: use Apache::Constants qw(:common);
83: use Apache::lonmsg();
1.82 www 84: use Apache::lonmenu();
1.22 www 85: my $readit;
86:
1.46 matthew 87: =pod
88:
89: =item Global Variables
90:
91: =over 4
92:
93: =cut
1.20 www 94: # ----------------------------------------------- Filetypes/Languages/Copyright
1.12 harris41 95: my %language;
96: my %cprtag;
97: my %fe; my %fd;
1.41 ng 98: my %category_extensions;
1.12 harris41 99:
1.63 www 100: # ---------------------------------------------- Designs
101:
102: my %designhash;
103:
1.46 matthew 104: # ---------------------------------------------- Thesaurus variables
105:
106: =pod
107:
108: =item %Keywords
109:
110: A hash used by &keyword to determine if a word is considered a keyword.
111:
112: =item $thesaurus_db_file
113:
114: Scalar containing the full path to the thesaurus database.
115:
116: =cut
117:
118: my %Keywords;
119: my $thesaurus_db_file;
120:
121:
122: =pod
123:
124: =back
125:
126: =cut
1.20 www 127:
1.12 harris41 128: # ----------------------------------------------------------------------- BEGIN
1.41 ng 129:
130: =pod
131:
1.35 matthew 132: =item BEGIN()
133:
134: Initialize values from language.tab, copyright.tab, filetypes.tab,
1.45 matthew 135: thesaurus.tab, and filecategories.tab.
1.35 matthew 136:
137: =cut
1.45 matthew 138:
1.35 matthew 139: # ----------------------------------------------------------------------- BEGIN
140:
1.18 www 141: BEGIN {
1.46 matthew 142: # Variable initialization
143: $thesaurus_db_file = $Apache::lonnet::perlvar{'lonTabDir'}."/thesaurus.db";
144: #
1.22 www 145: unless ($readit) {
1.12 harris41 146: # ------------------------------------------------------------------- languages
147: {
148: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
149: '/language.tab');
1.16 harris41 150: if ($fh) {
151: while (<$fh>) {
152: next if /^\#/;
153: chomp;
154: my ($key,$val)=(split(/\s+/,$_,2));
155: $language{$key}=$val;
156: }
1.12 harris41 157: }
158: }
159: # ------------------------------------------------------------------ copyrights
160: {
1.16 harris41 161: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonIncludes'}.
162: '/copyright.tab');
163: if ($fh) {
164: while (<$fh>) {
165: next if /^\#/;
166: chomp;
167: my ($key,$val)=(split(/\s+/,$_,2));
168: $cprtag{$key}=$val;
169: }
1.12 harris41 170: }
171: }
1.63 www 172:
173: # -------------------------------------------------------------- domain designs
174:
175: my $filename;
176: my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
177: opendir(DIR,$designdir);
178: while ($filename=readdir(DIR)) {
179: my ($domain)=($filename=~/^(\w+)\./);
180: {
181: my $fh=Apache::File->new($designdir.'/'.$filename);
182: if ($fh) {
183: while (<$fh>) {
184: next if /^\#/;
185: chomp;
186: my ($key,$val)=(split(/\=/,$_));
187: if ($val) { $designhash{$domain.'.'.$key}=$val; }
188: }
189: }
190: }
191:
192: }
193: closedir(DIR);
194:
195:
1.15 harris41 196: # ------------------------------------------------------------- file categories
197: {
198: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
1.16 harris41 199: '/filecategories.tab');
200: if ($fh) {
201: while (<$fh>) {
202: next if /^\#/;
203: chomp;
1.41 ng 204: my ($extension,$category)=(split(/\s+/,$_,2));
205: push @{$category_extensions{lc($category)}},$extension;
1.16 harris41 206: }
1.15 harris41 207: }
208: }
1.12 harris41 209: # ------------------------------------------------------------------ file types
210: {
1.16 harris41 211: my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
212: '/filetypes.tab');
213: if ($fh) {
214: while (<$fh>) {
215: next if (/^\#/);
216: chomp;
217: my ($ending,$emb,$descr)=split(/\s+/,$_,3);
218: if ($descr ne '') {
219: $fe{$ending}=lc($emb);
220: $fd{$ending}=$descr;
221: }
1.12 harris41 222: }
223: }
224: }
1.22 www 225: &Apache::lonnet::logthis(
1.46 matthew 226: "<font color=yellow>INFO: Read file types</font>");
1.22 www 227: $readit=1;
1.46 matthew 228: } # end of unless($readit)
1.32 matthew 229:
230: }
231: # ============================================================= END BEGIN BLOCK
1.42 matthew 232: ###############################################################
233: ## HTML and Javascript Helper Functions ##
234: ###############################################################
235:
236: =pod
237:
238: =item browser_and_searcher_javascript
239:
240: Returns scalar containing javascript to open a browser window
241: or a searcher window. Also creates
242:
243: =over 4
244:
245: =item openbrowser(formname,elementname,only,omit) [javascript]
246:
247: inputs: formname, elementname, only, omit
248:
249: formname and elementname indicate the name of the html form and name of
250: the element that the results of the browsing selection are to be placed in.
251:
252: Specifying 'only' will restrict the browser to displaying only files
253: with the given extension. Can be a comma seperated list.
254:
255: Specifying 'omit' will restrict the browser to NOT displaying files
256: with the given extension. Can be a comma seperated list.
257:
258: =item opensearcher(formname, elementname) [javascript]
259:
260: Inputs: formname, elementname
261:
262: formname and elementname specify the name of the html form and the name
263: of the element the selection from the search results will be placed in.
264:
265: =back
266:
267: =cut
268:
269: ###############################################################
270: sub browser_and_searcher_javascript {
271: return <<END;
1.50 matthew 272: var editbrowser = null;
1.42 matthew 273: function openbrowser(formname,elementname,only,omit) {
274: var url = '/res/?';
275: if (editbrowser == null) {
276: url += 'launch=1&';
277: }
278: url += 'catalogmode=interactive&';
279: url += 'mode=edit&';
280: url += 'form=' + formname + '&';
281: if (only != null) {
282: url += 'only=' + only + '&';
283: }
284: if (omit != null) {
285: url += 'omit=' + omit + '&';
286: }
287: url += 'element=' + elementname + '';
288: var title = 'Browser';
289: var options = 'scrollbars=1,resizable=1,menubar=0';
290: options += ',width=700,height=600';
291: editbrowser = open(url,title,options,'1');
292: editbrowser.focus();
293: }
294: var editsearcher;
295: function opensearcher(formname,elementname) {
296: var url = '/adm/searchcat?';
297: if (editsearcher == null) {
298: url += 'launch=1&';
299: }
300: url += 'catalogmode=interactive&';
301: url += 'mode=edit&';
302: url += 'form=' + formname + '&';
303: url += 'element=' + elementname + '';
304: var title = 'Search';
305: var options = 'scrollbars=1,resizable=1,menubar=0';
306: options += ',width=700,height=600';
307: editsearcher = open(url,title,options,'1');
308: editsearcher.focus();
309: }
310: END
311: }
312:
1.74 www 313: sub studentbrowser_javascript {
314: unless ($ENV{'request.course.id'}) { return ''; }
315: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
316: return '';
317: }
318: return (<<'ENDSTDBRW');
319: <script type="text/javascript" language="Javascript" >
320: var stdeditbrowser;
321: function openstdbrowser(formname,uname,udom) {
322: var url = '/adm/pickstudent?';
323: var filter;
324: eval('filter=document.'+formname+'.'+uname+'.value;');
325: if (filter != null) {
326: if (filter != '') {
327: url += 'filter='+filter+'&';
328: }
329: }
330: url += 'form=' + formname + '&unameelement='+uname+
331: '&udomelement='+udom;
332: var title = 'Student Browser';
333: var options = 'scrollbars=1,resizable=1,menubar=0';
334: options += ',width=700,height=600';
335: stdeditbrowser = open(url,title,options,'1');
336: stdeditbrowser.focus();
337: }
338: </script>
339: ENDSTDBRW
340: }
1.42 matthew 341:
1.74 www 342: sub selectstudent_link {
343: my ($form,$unameele,$udomele)=@_;
344: unless ($ENV{'request.course.id'}) { return ''; }
345: unless (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) {
346: return '';
347: }
348: return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
349: '","'.$udomele.'");'."'>Select</a>";
350: }
1.42 matthew 351:
352: ###############################################################
353:
354: =pod
1.36 matthew 355:
356: =item linked_select_forms(...)
357:
358: linked_select_forms returns a string containing a <script></script> block
359: and html for two <select> menus. The select menus will be linked in that
360: changing the value of the first menu will result in new values being placed
361: in the second menu. The values in the select menu will appear in alphabetical
362: order.
363:
364: linked_select_forms takes the following ordered inputs:
365:
366: =over 4
367:
368: =item $formname, the name of the <form> tag
369:
370: =item $middletext, the text which appears between the <select> tags
371:
372: =item $firstdefault, the default value for the first menu
373:
374: =item $firstselectname, the name of the first <select> tag
375:
376: =item $secondselectname, the name of the second <select> tag
377:
378: =item $hashref, a reference to a hash containing the data for the menus.
379:
1.41 ng 380: =back
381:
1.36 matthew 382: Below is an example of such a hash. Only the 'text', 'default', and
383: 'select2' keys must appear as stated. keys(%menu) are the possible
384: values for the first select menu. The text that coincides with the
1.41 ng 385: first menu value is given in $menu{$choice1}->{'text'}. The values
1.36 matthew 386: and text for the second menu are given in the hash pointed to by
387: $menu{$choice1}->{'select2'}.
388:
1.41 ng 389: my %menu = ( A1 => { text =>"Choice A1" ,
1.36 matthew 390: default => "B3",
391: select2 => {
392: B1 => "Choice B1",
393: B2 => "Choice B2",
394: B3 => "Choice B3",
395: B4 => "Choice B4"
396: }
397: },
398: A2 => { text =>"Choice A2" ,
399: default => "C2",
400: select2 => {
401: C1 => "Choice C1",
402: C2 => "Choice C2",
403: C3 => "Choice C3"
404: }
405: },
406: A3 => { text =>"Choice A3" ,
407: default => "D6",
408: select2 => {
409: D1 => "Choice D1",
410: D2 => "Choice D2",
411: D3 => "Choice D3",
412: D4 => "Choice D4",
413: D5 => "Choice D5",
414: D6 => "Choice D6",
415: D7 => "Choice D7"
416: }
417: }
418: );
419:
420: =cut
421:
422: # ------------------------------------------------
423:
424: sub linked_select_forms {
425: my ($formname,
426: $middletext,
427: $firstdefault,
428: $firstselectname,
429: $secondselectname,
430: $hashref
431: ) = @_;
432: my $second = "document.$formname.$secondselectname";
433: my $first = "document.$formname.$firstselectname";
434: # output the javascript to do the changing
435: my $result = '';
436: $result.="<script>\n";
437: $result.="var select2data = new Object();\n";
438: $" = '","';
439: my $debug = '';
440: foreach my $s1 (sort(keys(%$hashref))) {
441: $result.="select2data.d_$s1 = new Object();\n";
442: $result.="select2data.d_$s1.def = new String('".
443: $hashref->{$s1}->{'default'}."');\n";
444: $result.="select2data.d_$s1.values = new Array(";
445: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
446: $result.="\"@s2values\");\n";
447: $result.="select2data.d_$s1.texts = new Array(";
448: my @s2texts;
449: foreach my $value (@s2values) {
450: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
451: }
452: $result.="\"@s2texts\");\n";
453: }
454: $"=' ';
455: $result.= <<"END";
456:
457: function select1_changed() {
458: // Determine new choice
459: var newvalue = "d_" + $first.value;
460: // update select2
461: var values = select2data[newvalue].values;
462: var texts = select2data[newvalue].texts;
463: var select2def = select2data[newvalue].def;
464: var i;
465: // out with the old
466: for (i = 0; i < $second.options.length; i++) {
467: $second.options[i] = null;
468: }
469: // in with the nuclear
470: for (i=0;i<values.length; i++) {
471: $second.options[i] = new Option(values[i]);
472: $second.options[i].text = texts[i];
473: if (values[i] == select2def) {
474: $second.options[i].selected = true;
475: }
476: }
477: }
478: </script>
479: END
480: # output the initial values for the selection lists
481: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
482: foreach my $value (sort(keys(%$hashref))) {
483: $result.=" <option value=\"$value\" ";
484: $result.=" selected=\"true\" " if ($value eq $firstdefault);
485: $result.=">$hashref->{$value}->{'text'}</option>\n";
486: }
487: $result .= "</select>\n";
488: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
489: $result .= $middletext;
490: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
491: my $seconddefault = $hashref->{$firstdefault}->{'default'};
492: foreach my $value (sort(keys(%select2))) {
493: $result.=" <option value=\"$value\" ";
494: $result.=" selected=\"true\" " if ($value eq $seconddefault);
495: $result.=">$select2{$value}</option>\n";
496: }
497: $result .= "</select>\n";
498: # return $debug;
499: return $result;
500: } # end of sub linked_select_forms {
501:
1.33 matthew 502: ###############################################################
1.44 bowersj2 503:
1.45 matthew 504: =pod
1.44 bowersj2 505:
1.48 bowersj2 506: =item help_open_topic($topic, $text, $stayOnPage, $width, $height)
1.44 bowersj2 507:
508: Returns a string corresponding to an HTML link to the given help $topic, where $topic corresponds to the name of a .tex file in /home/httpd/html/adm/help/tex, with underscores replaced by spaces.
509:
1.48 bowersj2 510: $text will optionally be linked to the same topic, allowing you to link text in addition to the graphic. If you do not want to link text, but wish to specify one of the later parameters, pass an empty string.
511:
1.44 bowersj2 512: $stayOnPage is a value that will be interpreted as a boolean. If true, the link will not open a new window. If false, the link will open a new window using Javascript. (Default is false.)
513:
514: $width and $height are optional numerical parameters that will override the width and height of the popped up window, which may be useful for certain help topics with big pictures included.
515:
516: =cut
517:
518: sub help_open_topic {
1.48 bowersj2 519: my ($topic, $text, $stayOnPage, $width, $height) = @_;
520: $text = "" if (not defined $text);
1.44 bowersj2 521: $stayOnPage = 0 if (not defined $stayOnPage);
1.79 www 522: if ($ENV{'browser.interface'} eq 'textual') {
523: $stayOnPage=1;
524: }
1.44 bowersj2 525: $width = 350 if (not defined $width);
526: $height = 400 if (not defined $height);
527: my $filename = $topic;
528: $filename =~ s/ /_/g;
529:
1.48 bowersj2 530: my $template = "";
531: my $link;
1.44 bowersj2 532:
533: if (!$stayOnPage)
534: {
1.72 bowersj2 535: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
1.44 bowersj2 536: }
537: else
538: {
1.48 bowersj2 539: $link = "/adm/help/${filename}.hlp";
540: }
541:
542: # Add the text
543: if ($text ne "")
544: {
1.77 www 545: $template .=
546: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
1.78 www 547: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.48 bowersj2 548: }
549:
550: # Add the graphic
551: $template .= <<"ENDTEMPLATE";
1.77 www 552: <a href="$link"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)" /></a>
1.44 bowersj2 553: ENDTEMPLATE
1.78 www 554: if ($text ne '') { $template.='</td></tr></table>' };
1.44 bowersj2 555: return $template;
556:
557: }
1.37 matthew 558:
1.45 matthew 559: =pod
560:
1.37 matthew 561: =item csv_translate($text)
562:
563: Translate $text to allow it to be output as a 'comma seperated values'
564: format.
565:
566: =cut
567:
568: sub csv_translate {
569: my $text = shift;
570: $text =~ s/\"/\"\"/g;
571: $text =~ s/\n//g;
572: return $text;
573: }
574:
575: ###############################################################
1.33 matthew 576: ## Home server <option> list generating code ##
577: ###############################################################
1.35 matthew 578: #-------------------------------------------
579:
1.45 matthew 580: =pod
581:
1.35 matthew 582: =item get_domains()
583:
584: Returns an array containing each of the domains listed in the hosts.tab
585: file.
586:
587: =cut
588:
589: #-------------------------------------------
1.34 matthew 590: sub get_domains {
591: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
592: my @domains;
593: my %seen;
594: foreach (sort values(%Apache::lonnet::hostdom)) {
595: push (@domains,$_) unless $seen{$_}++;
596: }
597: return @domains;
598: }
1.88 www 599:
600: #-------------------------------------------
601:
602: =pod
603:
604: =item select_form($defdom,$name,%hash)
605:
606: Returns a string containing a <select name='$name' size='1'> form to
607: allow a user to select options from a hash option_name => displayed text.
608: See lonrights.pm for an example invocation and use.
609:
610: =cut
611:
612: #-------------------------------------------
613: sub select_form {
614: my ($def,$name,%hash) = @_;
615: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1.89 www 616: foreach (sort keys %hash) {
1.88 www 617: $selectform.="<option value=\"$_\" ".
618: ($_ eq $def ? 'selected' : '').
619: ">".$hash{$_}."</option>\n";
620: }
621: $selectform.="</select>";
622: return $selectform;
623: }
624:
1.34 matthew 625:
1.35 matthew 626: #-------------------------------------------
627:
1.45 matthew 628: =pod
629:
1.90 ! www 630: =item select_dom_form($defdom,$name,$includeempty)
1.35 matthew 631:
632: Returns a string containing a <select name='$name' size='1'> form to
633: allow a user to select the domain to preform an operation in.
634: See loncreateuser.pm for an example invocation and use.
635:
1.90 ! www 636: If the $includeempty flag is set, it also includes an empty choice ("no domain
! 637: selected");
! 638:
1.35 matthew 639: =cut
640:
641: #-------------------------------------------
1.34 matthew 642: sub select_dom_form {
1.90 ! www 643: my ($defdom,$name,$includeempty) = @_;
1.34 matthew 644: my @domains = get_domains();
1.90 ! www 645: if ($includeempty) { @domains=('',@domains); }
1.34 matthew 646: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
647: foreach (@domains) {
648: $selectdomain.="<option value=\"$_\" ".
649: ($_ eq $defdom ? 'selected' : '').
650: ">$_</option>\n";
651: }
652: $selectdomain.="</select>";
653: return $selectdomain;
654: }
655:
1.35 matthew 656: #-------------------------------------------
657:
1.45 matthew 658: =pod
659:
1.52 matthew 660: =item get_library_servers($domain)
1.35 matthew 661:
662: Returns a hash which contains keys like '103l3' and values like
663: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
664: given $domain.
665:
666: =cut
667:
668: #-------------------------------------------
1.52 matthew 669: sub get_library_servers {
1.33 matthew 670: my $domain = shift;
1.52 matthew 671: my %library_servers;
1.33 matthew 672: foreach (keys(%Apache::lonnet::libserv)) {
673: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1.52 matthew 674: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1.33 matthew 675: }
676: }
1.52 matthew 677: return %library_servers;
1.33 matthew 678: }
679:
1.35 matthew 680: #-------------------------------------------
681:
1.45 matthew 682: =pod
683:
1.35 matthew 684: =item home_server_option_list($domain)
685:
686: returns a string which contains an <option> list to be used in a
687: <select> form input. See loncreateuser.pm for an example.
688:
689: =cut
690:
691: #-------------------------------------------
1.33 matthew 692: sub home_server_option_list {
693: my $domain = shift;
1.52 matthew 694: my %servers = &get_library_servers($domain);
1.33 matthew 695: my $result = '';
696: foreach (sort keys(%servers)) {
697: $result.=
698: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
699: }
700: return $result;
701: }
702: ###############################################################
703: ## End of home server <option> list generating code ##
704: ###############################################################
1.87 matthew 705:
706: ###############################################################
707: ###############################################################
708:
709: =pod
710:
711: =item &decode_user_agent()
712:
713: Inputs: $r
714:
715: Outputs:
716:
717: =over 4
718:
719: =item $httpbrowser
720:
721: =item $clientbrowser
722:
723: =item $clientversion
724:
725: =item $clientmathml
726:
727: =item $clientunicode
728:
729: =item $clientos
730:
731: =back
732:
733: =cut
734:
735: ###############################################################
736: ###############################################################
737: sub decode_user_agent {
738: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
739: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
740: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
741: my $clientbrowser='unknown';
742: my $clientversion='0';
743: my $clientmathml='';
744: my $clientunicode='0';
745: for (my $i=0;$i<=$#browsertype;$i++) {
746: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
747: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
748: $clientbrowser=$bname;
749: $httpbrowser=~/$vreg/i;
750: $clientversion=$1;
751: $clientmathml=($clientversion>=$minv);
752: $clientunicode=($clientversion>=$univ);
753: }
754: }
755: my $clientos='unknown';
756: if (($httpbrowser=~/linux/i) ||
757: ($httpbrowser=~/unix/i) ||
758: ($httpbrowser=~/ux/i) ||
759: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
760: if (($httpbrowser=~/vax/i) ||
761: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
762: if ($httpbrowser=~/next/i) { $clientos='next'; }
763: if (($httpbrowser=~/mac/i) ||
764: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
765: if ($httpbrowser=~/win/i) { $clientos='win'; }
766: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
767: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
768: $clientunicode,$clientos,);
769: }
770:
771: ###############################################################
772: ###############################################################
773:
1.32 matthew 774:
775: ###############################################################
776: ## Authentication changing form generation subroutines ##
777: ###############################################################
778: ##
779: ## All of the authform_xxxxxxx subroutines take their inputs in a
780: ## hash, and have reasonable default values.
781: ##
782: ## formname = the name given in the <form> tag.
1.35 matthew 783: #-------------------------------------------
784:
1.45 matthew 785: =pod
786:
1.35 matthew 787: =item authform_xxxxxx
788:
789: The authform_xxxxxx subroutines provide javascript and html forms which
790: handle some of the conveniences required for authentication forms.
791: This is not an optimal method, but it works.
792:
793: See loncreateuser.pm for invocation and use examples.
794:
795: =over 4
796:
797: =item authform_header
798:
799: =item authform_authorwarning
800:
801: =item authform_nochange
802:
803: =item authform_kerberos
804:
805: =item authform_internal
806:
807: =item authform_filesystem
808:
809: =back
810:
811: =cut
812:
813: #-------------------------------------------
1.32 matthew 814: sub authform_header{
815: my %in = (
816: formname => 'cu',
1.80 albertel 817: kerb_def_dom => '',
1.32 matthew 818: @_,
819: );
820: $in{'formname'} = 'document.' . $in{'formname'};
821: my $result='';
1.80 albertel 822:
823: #---------------------------------------------- Code for upper case translation
824: my $Javascript_toUpperCase;
825: unless ($in{kerb_def_dom}) {
826: $Javascript_toUpperCase =<<"END";
827: switch (choice) {
828: case 'krb': currentform.elements[choicearg].value =
829: currentform.elements[choicearg].value.toUpperCase();
830: break;
831: default:
832: }
833: END
834: } else {
835: $Javascript_toUpperCase = "";
836: }
837:
1.32 matthew 838: $result.=<<"END";
839: var current = new Object();
840: current.radiovalue = 'nochange';
841: current.argfield = null;
842:
843: function changed_radio(choice,currentform) {
844: var choicearg = choice + 'arg';
845: // If a radio button in changed, we need to change the argfield
846: if (current.radiovalue != choice) {
847: current.radiovalue = choice;
848: if (current.argfield != null) {
849: currentform.elements[current.argfield].value = '';
850: }
851: if (choice == 'nochange') {
852: current.argfield = null;
853: } else {
854: current.argfield = choicearg;
855: switch(choice) {
856: case 'krb':
857: currentform.elements[current.argfield].value =
858: "$in{'kerb_def_dom'}";
859: break;
860: default:
861: break;
862: }
863: }
864: }
865: return;
866: }
1.22 www 867:
1.32 matthew 868: function changed_text(choice,currentform) {
869: var choicearg = choice + 'arg';
870: if (currentform.elements[choicearg].value !='') {
1.80 albertel 871: $Javascript_toUpperCase
1.32 matthew 872: // clear old field
873: if ((current.argfield != choicearg) && (current.argfield != null)) {
874: currentform.elements[current.argfield].value = '';
875: }
876: current.argfield = choicearg;
877: }
878: set_auth_radio_buttons(choice,currentform);
879: return;
1.20 www 880: }
1.32 matthew 881:
882: function set_auth_radio_buttons(newvalue,currentform) {
883: var i=0;
884: while (i < currentform.login.length) {
885: if (currentform.login[i].value == newvalue) { break; }
886: i++;
887: }
888: if (i == currentform.login.length) {
889: return;
890: }
891: current.radiovalue = newvalue;
892: currentform.login[i].checked = true;
893: return;
894: }
895: END
896: return $result;
897: }
898:
899: sub authform_authorwarning{
900: my $result='';
901: $result=<<"END";
902: <i>As a general rule, only authors or co-authors should be filesystem
903: authenticated (which allows access to the server filesystem).</i>
904: END
905: return $result;
906: }
907:
908: sub authform_nochange{
909: my %in = (
910: formname => 'document.cu',
911: kerb_def_dom => 'MSU.EDU',
912: @_,
913: );
914: my $result='';
915: $result.=<<"END";
916: <input type="radio" name="login" value="nochange" checked="checked"
1.57 albertel 917: onclick="javascript:changed_radio('nochange',$in{'formname'});" />
1.32 matthew 918: Do not change login data
919: END
920: return $result;
921: }
922:
923: sub authform_kerberos{
924: my %in = (
925: formname => 'document.cu',
926: kerb_def_dom => 'MSU.EDU',
1.80 albertel 927: kerb_def_auth => 'krb4',
1.32 matthew 928: @_,
929: );
930: my $result='';
1.80 albertel 931: my $check4;
932: my $check5;
933: if ($in{'kerb_def_auth'} eq 'krb5') {
934: $check5 = " checked=\"on\"";
935: } else {
936: $check4 = " checked=\"on\"";
937: }
1.32 matthew 938: $result.=<<"END";
939: <input type="radio" name="login" value="krb"
940: onclick="javascript:changed_radio('krb',$in{'formname'});"
1.57 albertel 941: onchange="javascript:changed_radio('krb',$in{'formname'});" />
1.32 matthew 942: Kerberos authenticated with domain
1.80 albertel 943: <input type="text" size="10" name="krbarg" value="$in{'kerb_def_dom'}"
1.57 albertel 944: onchange="javascript:changed_text('krb',$in{'formname'});" />
1.80 albertel 945: <input type="radio" name="krbver" value="4" $check4 />Version 4
946: <input type="radio" name="krbver" value="5" $check5 />Version 5
1.32 matthew 947: END
948: return $result;
949: }
950:
951: sub authform_internal{
952: my %args = (
953: formname => 'document.cu',
954: kerb_def_dom => 'MSU.EDU',
955: @_,
956: );
957: my $result='';
958: $result.=<<"END";
959: <input type="radio" name="login" value="int"
960: onchange="javascript:changed_radio('int',$args{'formname'});"
1.57 albertel 961: onclick="javascript:changed_radio('int',$args{'formname'});" />
1.32 matthew 962: Internally authenticated (with initial password
963: <input type="text" size="10" name="intarg" value=""
1.75 www 964: onchange="javascript:changed_text('int',$args{'formname'});" />)
1.32 matthew 965: END
966: return $result;
967: }
968:
969: sub authform_local{
970: my %in = (
971: formname => 'document.cu',
972: kerb_def_dom => 'MSU.EDU',
973: @_,
974: );
975: my $result='';
976: $result.=<<"END";
977: <input type="radio" name="login" value="loc"
978: onchange="javascript:changed_radio('loc',$in{'formname'});"
1.57 albertel 979: onclick="javascript:changed_radio('loc',$in{'formname'});" />
1.32 matthew 980: Local Authentication with argument
981: <input type="text" size="10" name="locarg" value=""
1.57 albertel 982: onchange="javascript:changed_text('loc',$in{'formname'});" />
1.32 matthew 983: END
984: return $result;
985: }
986:
987: sub authform_filesystem{
988: my %in = (
989: formname => 'document.cu',
990: kerb_def_dom => 'MSU.EDU',
991: @_,
992: );
993: my $result='';
994: $result.=<<"END";
995: <input type="radio" name="login" value="fsys"
996: onchange="javascript:changed_radio('fsys',$in{'formname'});"
1.57 albertel 997: onclick="javascript:changed_radio('fsys',$in{'formname'});" />
1.32 matthew 998: Filesystem authenticated (with initial password
999: <input type="text" size="10" name="fsysarg" value=""
1.75 www 1000: onchange="javascript:changed_text('fsys',$in{'formname'});">)
1.32 matthew 1001: END
1002: return $result;
1003: }
1004:
1005: ###############################################################
1006: ## End Authentication changing form generation functions ##
1.80 albertel 1007: ###############################################################
1008:
1009: ###############################################################
1010: ## Get Authentication Defaults for Domain ##
1011: ###############################################################
1012: ##
1013: ## Returns default authentication type and an associated argument
1014: ## as listed in file domain.tab
1015: ##
1016: #-------------------------------------------
1017:
1018: =pod
1019:
1020: =item get_auth_defaults
1021:
1022: get_auth_defaults($target_domain) returns the default authentication
1023: type and an associated argument (initial password or a kerberos domain).
1024: These values are stored in lonTabs/domain.tab
1025:
1026: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1027:
1028: If target_domain is not found in domain.tab, returns nothing ('').
1029:
1030: =over 4
1031:
1032: =item get_auth_defaults
1033:
1034: =back
1035:
1036: =cut
1037:
1038: #-------------------------------------------
1039: sub get_auth_defaults {
1040: my $domain=shift;
1041: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1042: }
1043: ###############################################################
1044: ## End Get Authentication Defaults for Domain ##
1045: ###############################################################
1046:
1047: ###############################################################
1048: ## Get Kerberos Defaults for Domain ##
1049: ###############################################################
1050: ##
1051: ## Returns default kerberos version and an associated argument
1052: ## as listed in file domain.tab. If not listed, provides
1053: ## appropriate default domain and kerberos version.
1054: ##
1055: #-------------------------------------------
1056:
1057: =pod
1058:
1059: =item get_kerberos_defaults
1060:
1061: get_kerberos_defaults($target_domain) returns the default kerberos
1062: version and domain. If not found in domain.tabs, it defaults to
1063: version 4 and the domain of the server.
1064:
1065: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1066:
1067: =over 4
1068:
1069: =item get_kerberos_defaults
1070:
1071: =back
1072:
1073: =cut
1074:
1075: #-------------------------------------------
1076: sub get_kerberos_defaults {
1077: my $domain=shift;
1078: my ($krbdef,$krbdefdom) =
1079: &Apache::loncommon::get_auth_defaults($domain);
1080: unless ($krbdef =~/^krb/ && $krbdefdom) {
1081: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1082: my $krbdefdom=$1;
1083: $krbdefdom=~tr/a-z/A-Z/;
1084: $krbdef = "krb4";
1085: }
1086: return ($krbdef,$krbdefdom);
1087: }
1088: ###############################################################
1089: ## End Get Kerberos Defaults for Domain ##
1.32 matthew 1090: ###############################################################
1091:
1.46 matthew 1092: ###############################################################
1093: ## Thesaurus Functions ##
1094: ###############################################################
1.20 www 1095:
1.46 matthew 1096: =pod
1.20 www 1097:
1.46 matthew 1098: =item initialize_keywords
1099:
1100: Initializes the package variable %Keywords if it is empty. Uses the
1101: package variable $thesaurus_db_file.
1102:
1103: =cut
1104:
1105: ###################################################
1106:
1107: sub initialize_keywords {
1108: return 1 if (scalar keys(%Keywords));
1109: # If we are here, %Keywords is empty, so fill it up
1110: # Make sure the file we need exists...
1111: if (! -e $thesaurus_db_file) {
1112: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1113: " failed because it does not exist");
1114: return 0;
1115: }
1116: # Set up the hash as a database
1117: my %thesaurus_db;
1118: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1119: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1120: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1121: $thesaurus_db_file);
1122: return 0;
1123: }
1124: # Get the average number of appearances of a word.
1125: my $avecount = $thesaurus_db{'average.count'};
1126: # Put keywords (those that appear > average) into %Keywords
1127: while (my ($word,$data)=each (%thesaurus_db)) {
1128: my ($count,undef) = split /:/,$data;
1129: $Keywords{$word}++ if ($count > $avecount);
1130: }
1131: untie %thesaurus_db;
1132: # Remove special values from %Keywords.
1133: foreach ('total.count','average.count') {
1134: delete($Keywords{$_}) if (exists($Keywords{$_}));
1135: }
1136: return 1;
1137: }
1138:
1139: ###################################################
1140:
1141: =pod
1142:
1143: =item keyword($word)
1144:
1145: Returns true if $word is a keyword. A keyword is a word that appears more
1146: than the average number of times in the thesaurus database. Calls
1147: &initialize_keywords
1148:
1149: =cut
1150:
1151: ###################################################
1.20 www 1152:
1153: sub keyword {
1.46 matthew 1154: return if (!&initialize_keywords());
1155: my $word=lc(shift());
1156: $word=~s/\W//g;
1157: return exists($Keywords{$word});
1.20 www 1158: }
1.46 matthew 1159:
1160: ###############################################################
1161:
1162: =pod
1.20 www 1163:
1.46 matthew 1164: =item get_related_words
1165:
1166: Look up a word in the thesaurus. Takes a scalar arguement and returns
1167: an array of words. If the keyword is not in the thesaurus, an empty array
1168: will be returned. The order of the words returned is determined by the
1169: database which holds them.
1170:
1171: Uses global $thesaurus_db_file.
1172:
1173: =cut
1174:
1175: ###############################################################
1176: sub get_related_words {
1177: my $keyword = shift;
1178: my %thesaurus_db;
1179: if (! -e $thesaurus_db_file) {
1180: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1181: "failed because the file does not exist");
1182: return ();
1183: }
1184: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1185: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1186: return ();
1187: }
1188: my @Words=();
1189: if (exists($thesaurus_db{$keyword})) {
1190: $_ = $thesaurus_db{$keyword};
1191: (undef,@Words) = split/:/; # The first element is the number of times
1192: # the word appears. We do not need it now.
1193: for (my $i=0;$i<=$#Words;$i++) {
1194: ($Words[$i],undef)= split/\,/,$Words[$i];
1.20 www 1195: }
1196: }
1.46 matthew 1197: untie %thesaurus_db;
1198: return @Words;
1.14 harris41 1199: }
1.46 matthew 1200:
1201: ###############################################################
1202: ## End Thesaurus Functions ##
1203: ###############################################################
1.61 www 1204:
1205: # -------------------------------------------------------------- Plaintext name
1.81 albertel 1206: =pod
1207:
1208: =item plainname($uname,$udom)
1209:
1210: Gets a users name and returns it as a string in
1211: "first middle last generation"
1212: form
1213:
1214: =cut
1.61 www 1215:
1.81 albertel 1216: ###############################################################
1.61 www 1217: sub plainname {
1218: my ($uname,$udom)=@_;
1219: my %names=&Apache::lonnet::get('environment',
1220: ['firstname','middlename','lastname','generation'],
1221: $udom,$uname);
1.62 www 1222: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1.61 www 1223: $names{'lastname'}.' '.$names{'generation'};
1.62 www 1224: $name=~s/\s+$//;
1225: $name=~s/\s+/ /g;
1226: return $name;
1.61 www 1227: }
1.66 www 1228:
1229: # -------------------------------------------------------------------- Nickname
1.81 albertel 1230: =pod
1231:
1232: =item nickname($uname,$udom)
1233:
1234: Gets a users name and returns it as a string as
1235:
1236: ""nickname""
1.66 www 1237:
1.81 albertel 1238: if the user has a nickname or
1239:
1240: "first middle last generation"
1241:
1242: if the user does not
1243:
1244: =cut
1.66 www 1245:
1246: sub nickname {
1247: my ($uname,$udom)=@_;
1248: my %names=&Apache::lonnet::get('environment',
1249: ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
1.68 albertel 1250: my $name=$names{'nickname'};
1.66 www 1251: if ($name) {
1252: $name='"'.$name.'"';
1253: } else {
1254: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1255: $names{'lastname'}.' '.$names{'generation'};
1256: $name=~s/\s+$//;
1257: $name=~s/\s+/ /g;
1258: }
1259: return $name;
1260: }
1261:
1.61 www 1262:
1263: # ------------------------------------------------------------------ Screenname
1.81 albertel 1264:
1265: =pod
1266:
1267: =item screenname($uname,$udom)
1268:
1269: Gets a users screenname and returns it as a string
1270:
1271: =cut
1.61 www 1272:
1273: sub screenname {
1274: my ($uname,$udom)=@_;
1275: my %names=
1276: &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1.68 albertel 1277: return $names{'screenname'};
1.62 www 1278: }
1279:
1280: # ------------------------------------------------------------- Message Wrapper
1281:
1282: sub messagewrapper {
1283: my ($link,$un,$do)=@_;
1284: return
1285: "<a href='/adm/email?compose=individual&recname=$un&recdom=$do'>$link</a>";
1.74 www 1286: }
1287: # --------------------------------------------------------------- Notes Wrapper
1288:
1289: sub noteswrapper {
1290: my ($link,$un,$do)=@_;
1291: return
1292: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1.62 www 1293: }
1294: # ------------------------------------------------------------- Aboutme Wrapper
1295:
1296: sub aboutmewrapper {
1.69 matthew 1297: my ($link,$username,$domain)=@_;
1298: return "<a href='/adm/$domain/$username/aboutme'>$link</a>";
1.62 www 1299: }
1300:
1301: # ------------------------------------------------------------ Syllabus Wrapper
1302:
1303:
1304: sub syllabuswrapper {
1.73 www 1305: my ($link,$un,$do,$tf)=@_;
1306: if ($tf) { $link='<font color="'.$tf.'">'.$link.'</font>'; }
1.62 www 1307: return "<a href='/public/$do/$un/syllabus'>$link</a>";
1.61 www 1308: }
1.14 harris41 1309:
1310: # ---------------------------------------------------------------- Language IDs
1311: sub languageids {
1.16 harris41 1312: return sort(keys(%language));
1.14 harris41 1313: }
1314:
1315: # -------------------------------------------------------- Language Description
1316: sub languagedescription {
1.16 harris41 1317: return $language{shift(@_)};
1.14 harris41 1318: }
1319:
1320: # --------------------------------------------------------------- Copyright IDs
1321: sub copyrightids {
1.16 harris41 1322: return sort(keys(%cprtag));
1.14 harris41 1323: }
1324:
1325: # ------------------------------------------------------- Copyright Description
1326: sub copyrightdescription {
1.16 harris41 1327: return $cprtag{shift(@_)};
1.14 harris41 1328: }
1329:
1330: # ------------------------------------------------------------- File Categories
1331: sub filecategories {
1.41 ng 1332: return sort(keys(%category_extensions));
1.15 harris41 1333: }
1.14 harris41 1334:
1.17 harris41 1335: # -------------------------------------- File Types within a specified category
1.15 harris41 1336: sub filecategorytypes {
1.41 ng 1337: return @{$category_extensions{lc($_[0])}};
1.14 harris41 1338: }
1339:
1340: # ------------------------------------------------------------------ File Types
1341: sub fileextensions {
1.16 harris41 1342: return sort(keys(%fe));
1.14 harris41 1343: }
1344:
1345: # ------------------------------------------------------------- Embedding Style
1346: sub fileembstyle {
1.16 harris41 1347: return $fe{lc(shift(@_))};
1.14 harris41 1348: }
1349:
1350: # ------------------------------------------------------------ Description Text
1351: sub filedescription {
1.16 harris41 1352: return $fd{lc(shift(@_))};
1353: }
1354:
1355: # ------------------------------------------------------------ Description Text
1356: sub filedescriptionex {
1357: my $ex=shift;
1358: return '.'.$ex.' '.$fd{lc($ex)};
1.12 harris41 1359: }
1.1 albertel 1360:
1.40 ng 1361: # ---- Retrieve attempts by students
1362: # input
1363: # $symb - problem including path
1364: # $username,$domain - that of the student
1365: # $course - course name
1366: # $getattempt - leave blank if want all attempts, else put something.
1.43 ng 1367: # $regexp - regular expression. If string matches regexp send to
1368: # $gradesub - routine that process the string if it matches regexp
1.40 ng 1369: #
1370: # output
1371: # formatted as a table all the attempts, if any.
1372: #
1.1 albertel 1373: sub get_previous_attempt {
1.43 ng 1374: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
1.1 albertel 1375: my $prevattempts='';
1.43 ng 1376: no strict 'refs';
1.1 albertel 1377: if ($symb) {
1.3 albertel 1378: my (%returnhash)=
1379: &Apache::lonnet::restore($symb,$course,$domain,$username);
1.1 albertel 1380: if ($returnhash{'version'}) {
1381: my %lasthash=();
1382: my $version;
1383: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.19 harris41 1384: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
1.1 albertel 1385: $lasthash{$_}=$returnhash{$version.':'.$_};
1.19 harris41 1386: }
1.1 albertel 1387: }
1.43 ng 1388: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
1.40 ng 1389: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
1.16 harris41 1390: foreach (sort(keys %lasthash)) {
1.31 albertel 1391: my ($ign,@parts) = split(/\./,$_);
1.41 ng 1392: if ($#parts > 0) {
1.31 albertel 1393: my $data=$parts[-1];
1394: pop(@parts);
1.40 ng 1395: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
1.31 albertel 1396: } else {
1.41 ng 1397: if ($#parts == 0) {
1398: $prevattempts.='<th>'.$parts[0].'</th>';
1399: } else {
1400: $prevattempts.='<th>'.$ign.'</th>';
1401: }
1.31 albertel 1402: }
1.16 harris41 1403: }
1.40 ng 1404: if ($getattempt eq '') {
1405: for ($version=1;$version<=$returnhash{'version'};$version++) {
1406: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
1407: foreach (sort(keys %lasthash)) {
1408: my $value;
1409: if ($_ =~ /timestamp/) {
1410: $value=scalar(localtime($returnhash{$version.':'.$_}));
1411: } else {
1412: $value=$returnhash{$version.':'.$_};
1413: }
1414: $prevattempts.='<td>'.$value.' </td>';
1415: }
1416: }
1.1 albertel 1417: }
1.40 ng 1418: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
1.16 harris41 1419: foreach (sort(keys %lasthash)) {
1.5 albertel 1420: my $value;
1421: if ($_ =~ /timestamp/) {
1422: $value=scalar(localtime($lasthash{$_}));
1423: } else {
1424: $value=$lasthash{$_};
1425: }
1.49 ng 1426: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
1.40 ng 1427: $prevattempts.='<td>'.$value.' </td>';
1.16 harris41 1428: }
1.40 ng 1429: $prevattempts.='</tr></table></td></tr></table>';
1.1 albertel 1430: } else {
1431: $prevattempts='Nothing submitted - no attempts.';
1432: }
1433: } else {
1434: $prevattempts='No data.';
1435: }
1.10 albertel 1436: }
1437:
1438: sub get_student_view {
1.64 sakharuk 1439: my ($symb,$username,$domain,$courseid,$target) = @_;
1.10 albertel 1440: my ($map,$id,$feedurl) = split(/___/,$symb);
1441: my (%old,%moreenv);
1442: my @elements=('symb','courseid','domain','username');
1443: foreach my $element (@elements) {
1444: $old{$element}=$ENV{'form.grade_'.$element};
1445: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1446: }
1.64 sakharuk 1447: if ($target eq 'tex') {$moreenv{'form.grade_target'} = 'tex';}
1.11 albertel 1448: &Apache::lonnet::appenv(%moreenv);
1449: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl);
1450: &Apache::lonnet::delenv('form.grade_');
1451: foreach my $element (@elements) {
1452: $ENV{'form.grade_'.$element}=$old{$element};
1453: }
1454: $userview=~s/\<body[^\>]*\>//gi;
1455: $userview=~s/\<\/body\>//gi;
1456: $userview=~s/\<html\>//gi;
1457: $userview=~s/\<\/html\>//gi;
1458: $userview=~s/\<head\>//gi;
1459: $userview=~s/\<\/head\>//gi;
1460: $userview=~s/action\s*\=/would_be_action\=/gi;
1461: return $userview;
1462: }
1463:
1464: sub get_student_answers {
1465: my ($symb,$username,$domain,$courseid) = @_;
1466: my ($map,$id,$feedurl) = split(/___/,$symb);
1467: my (%old,%moreenv);
1468: my @elements=('symb','courseid','domain','username');
1469: foreach my $element (@elements) {
1470: $old{$element}=$ENV{'form.grade_'.$element};
1471: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1472: }
1473: $moreenv{'form.grade_target'}='answer';
1.10 albertel 1474: &Apache::lonnet::appenv(%moreenv);
1475: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl);
1476: &Apache::lonnet::delenv('form.grade_');
1477: foreach my $element (@elements) {
1478: $ENV{'form.grade_'.$element}=$old{$element};
1479: }
1480: return $userview;
1.1 albertel 1481: }
1.37 matthew 1482:
1483: ###############################################
1.51 www 1484:
1485:
1486: sub timehash {
1487: my @ltime=localtime(shift);
1488: return ( 'seconds' => $ltime[0],
1489: 'minutes' => $ltime[1],
1490: 'hours' => $ltime[2],
1491: 'day' => $ltime[3],
1492: 'month' => $ltime[4]+1,
1493: 'year' => $ltime[5]+1900,
1494: 'weekday' => $ltime[6],
1495: 'dayyear' => $ltime[7]+1,
1496: 'dlsav' => $ltime[8] );
1497: }
1498:
1499: sub maketime {
1500: my %th=@_;
1501: return POSIX::mktime(
1502: ($th{'seconds'},$th{'minutes'},$th{'hours'},
1503: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
1504: }
1505:
1.70 www 1506:
1507: #########################################
1508: #
1509: # Retro-fixing of un-backward-compatible time format
1510:
1511: sub unsqltime {
1512: my $timestamp=shift;
1513: if ($timestamp=~/^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/) {
1514: $timestamp=&maketime(
1515: 'year'=>$1,'month'=>$2,'day'=>$3,
1516: 'hours'=>$4,'minutes'=>$5,'seconds'=>$6);
1517: }
1518: return $timestamp;
1519: }
1520:
1521: #########################################
1.51 www 1522:
1523: sub findallcourses {
1524: my %courses=();
1525: my $now=time;
1526: foreach (keys %ENV) {
1527: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
1528: my ($starttime,$endtime)=$ENV{$_};
1529: my $active=1;
1530: if ($starttime) {
1531: if ($now<$starttime) { $active=0; }
1532: }
1533: if ($endtime) {
1534: if ($now>$endtime) { $active=0; }
1535: }
1536: if ($active) { $courses{$1.'_'.$2}=1; }
1537: }
1538: }
1539: return keys %courses;
1540: }
1.37 matthew 1541:
1.54 www 1542: ###############################################
1.60 matthew 1543: ###############################################
1544:
1545: =pod
1546:
1.63 www 1547: =item &determinedomain()
1.60 matthew 1548:
1549: Inputs: $domain (usually will be undef)
1550:
1.63 www 1551: Returns: Determines which domain should be used for designs
1.60 matthew 1552:
1553: =cut
1.54 www 1554:
1.60 matthew 1555: ###############################################
1.63 www 1556: sub determinedomain {
1557: my $domain=shift;
1558: if (! $domain) {
1.60 matthew 1559: # Determine domain if we have not been given one
1560: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
1561: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
1562: if ($ENV{'request.role.domain'}) {
1563: $domain=$ENV{'request.role.domain'};
1564: }
1565: }
1.63 www 1566: return $domain;
1567: }
1568: ###############################################
1569: =pod
1570:
1571: =item &domainlogo()
1572:
1573: Inputs: $domain (usually will be undef)
1574:
1575: Returns: A link to a domain logo, if the domain logo exists.
1576: If the domain logo does not exist, a description of the domain.
1577:
1578: =cut
1579: ###############################################
1580: sub domainlogo {
1581: my $domain = &determinedomain(shift);
1582: # See if there is a logo
1.59 www 1583: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
1.83 albertel 1584: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
1585: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1586: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
1587: '/adm/lonDomLogos/'.$domain.'.gif" />';
1.60 matthew 1588: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
1589: return $Apache::lonnet::domaindescription{$domain};
1.59 www 1590: } else {
1.60 matthew 1591: return '';
1.59 www 1592: }
1593: }
1.63 www 1594: ##############################################
1595:
1596: =pod
1597:
1598: =item &designparm()
1599:
1600: Inputs: $which parameter; $domain (usually will be undef)
1601:
1602: Returns: value of designparamter $which
1603:
1604: =cut
1605: ##############################################
1606: sub designparm {
1607: my ($which,$domain)=@_;
1608: $domain=&determinedomain($domain);
1609: if ($designhash{$domain.'.'.$which}) {
1610: return $designhash{$domain.'.'.$which};
1611: } else {
1612: return $designhash{'default.'.$which};
1613: }
1614: }
1.59 www 1615:
1.60 matthew 1616: ###############################################
1617: ###############################################
1618:
1619: =pod
1620:
1621: =item &bodytag()
1622:
1623: Returns a uniform header for LON-CAPA web pages.
1624:
1625: Inputs:
1626:
1627: $title, A title to be displayed on the page.
1628: $function, the current role (can be undef).
1629: $addentries, extra parameters for the <body> tag.
1630: $bodyonly, if defined, only return the <body> tag.
1631: $domain, if defined, force a given domain.
1.86 www 1632: $forcereg, if page should register as content page (relevant for
1633: text interface only)
1.60 matthew 1634:
1635: Returns: A uniform header for LON-CAPA web pages.
1636: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
1637: If $bodyonly is undef or zero, an html string containing a <body> tag and
1638: other decorations will be returned.
1639:
1640: =cut
1641:
1642: ###############################################
1.63 www 1643:
1644:
1.60 matthew 1645: ###############################################
1.54 www 1646: sub bodytag {
1.86 www 1647: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
1.55 www 1648: unless ($function) {
1649: $function='student';
1650: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
1651: $function='coordinator';
1652: }
1653: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
1654: $function='admin';
1655: }
1656: if (($ENV{'request.role'}=~/^(au|ca)/) ||
1657: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
1658: $function='author';
1659: }
1660: }
1.63 www 1661: my $img=&designparm($function.'.img',$domain);
1662: my $pgbg=&designparm($function.'.pgbg',$domain);
1663: my $tabbg=&designparm($function.'.tabbg',$domain);
1664: my $font=&designparm($function.'.font',$domain);
1665: my $link=&designparm($function.'.link',$domain);
1666: my $alink=&designparm($function.'.alink',$domain);
1667: my $vlink=&designparm($function.'.vlink',$domain);
1668: my $sidebg=&designparm($function.'.sidebg',$domain);
1669:
1670: # role and realm
1.55 www 1671: my ($role,$realm)
1672: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
1673: # realm
1.54 www 1674: if ($ENV{'request.course.id'}) {
1.55 www 1675: $realm=
1676: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.54 www 1677: }
1.55 www 1678: unless ($realm) { $realm=' '; }
1679: # Set messages
1.60 matthew 1680: my $messages=&domainlogo($domain);
1.55 www 1681: # Output
1.83 albertel 1682: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
1683: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1.60 matthew 1684: my $bodytag = <<END;
1.54 www 1685: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
1686: $addentries>
1.60 matthew 1687: END
1688: if ($bodyonly) {
1689: return $bodytag;
1.79 www 1690: } elsif ($ENV{'browser.interface'} eq 'textual') {
1.86 www 1691: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
1692: $forcereg).
1.82 www 1693: '<h1>LON-CAPA: '.$title.'</h1>';
1.60 matthew 1694: } else {
1695: return(<<ENDBODY);
1696: $bodytag
1.55 www 1697: <table width="100%" cellspacing="0" border="0" cellpadding="0">
1698: <tr><td bgcolor="$font">
1.83 albertel 1699: <img src="http://$ENV{'HTTP_HOST'}:$lonhttpdPort$img" /></td>
1.63 www 1700: <td bgcolor="$font"><font color='$sidebg'>$messages</font></td>
1.55 www 1701: </tr>
1.54 www 1702: <tr>
1.55 www 1703: <td rowspan="3" bgcolor="$tabbg">
1704: <font size="5"><b>$title</b></font>
1.54 www 1705: <td bgcolor="$tabbg" align="right">
1706: <font size="2">
1707: $ENV{'environment.firstname'}
1708: $ENV{'environment.middlename'}
1709: $ENV{'environment.lastname'}
1710: $ENV{'environment.generation'}
1.55 www 1711: </font>
1.54 www 1712: </td>
1713: </tr>
1714: <tr><td bgcolor="$tabbg" align="right">
1.55 www 1715: <font size="2">$role</font>
1.54 www 1716: </td></tr>
1.55 www 1717: <tr>
1718: <td bgcolor="$tabbg" align="right"><font size="2">$realm</font> </td></tr>
1.54 www 1719: </table><br>
1720: ENDBODY
1.60 matthew 1721: }
1.54 www 1722: }
1.37 matthew 1723: ###############################################
1.1 albertel 1724:
1.6 albertel 1725: sub get_unprocessed_cgi {
1.25 albertel 1726: my ($query,$possible_names)= @_;
1.26 matthew 1727: # $Apache::lonxml::debug=1;
1.16 harris41 1728: foreach (split(/&/,$query)) {
1.6 albertel 1729: my ($name, $value) = split(/=/,$_);
1.25 albertel 1730: $name = &Apache::lonnet::unescape($name);
1731: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
1732: $value =~ tr/+/ /;
1733: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1734: &Apache::lonxml::debug("Seting :$name: to :$value:");
1.30 albertel 1735: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
1.25 albertel 1736: }
1.16 harris41 1737: }
1.6 albertel 1738: }
1739:
1.7 albertel 1740: sub cacheheader {
1.23 www 1741: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.8 albertel 1742: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.7 albertel 1743: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
1744: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
1745: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
1746: return $output;
1747: }
1748:
1.9 albertel 1749: sub no_cache {
1750: my ($r) = @_;
1.23 www 1751: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.24 albertel 1752: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.9 albertel 1753: $r->no_cache(1);
1754: $r->header_out("Pragma" => "no-cache");
1.24 albertel 1755: #$r->header_out("Expires" => $date);
1.9 albertel 1756: }
1.25 albertel 1757:
1758: sub add_to_env {
1759: my ($name,$value)=@_;
1.28 albertel 1760: if (defined($ENV{$name})) {
1.27 albertel 1761: if (ref($ENV{$name})) {
1.25 albertel 1762: #already have multiple values
1763: push(@{ $ENV{$name} },$value);
1764: } else {
1765: #first time seeing multiple values, convert hash entry to an arrayref
1766: my $first=$ENV{$name};
1767: undef($ENV{$name});
1768: push(@{ $ENV{$name} },$first,$value);
1769: }
1770: } else {
1771: $ENV{$name}=$value;
1772: }
1.31 albertel 1773: }
1774:
1.41 ng 1775: =pod
1.45 matthew 1776:
1777: =back
1.41 ng 1778:
1779: =head2 CSV Upload/Handling functions
1.38 albertel 1780:
1.41 ng 1781: =over 4
1782:
1783: =item upfile_store($r)
1784:
1785: Store uploaded file, $r should be the HTTP Request object,
1786: needs $ENV{'form.upfile'}
1787: returns $datatoken to be put into hidden field
1788:
1789: =cut
1.31 albertel 1790:
1791: sub upfile_store {
1792: my $r=shift;
1793: $ENV{'form.upfile'}=~s/\r/\n/gs;
1794: $ENV{'form.upfile'}=~s/\f/\n/gs;
1795: $ENV{'form.upfile'}=~s/\n+/\n/gs;
1796: $ENV{'form.upfile'}=~s/\n+$//gs;
1797:
1798: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1799: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
1800: {
1801: my $fh=Apache::File->new('>'.$r->dir_config('lonDaemons').
1802: '/tmp/'.$datatoken.'.tmp');
1803: print $fh $ENV{'form.upfile'};
1804: }
1805: return $datatoken;
1806: }
1807:
1.56 matthew 1808: =pod
1809:
1.41 ng 1810: =item load_tmp_file($r)
1811:
1812: Load uploaded file from tmp, $r should be the HTTP Request object,
1813: needs $ENV{'form.datatoken'},
1814: sets $ENV{'form.upfile'} to the contents of the file
1815:
1816: =cut
1.31 albertel 1817:
1818: sub load_tmp_file {
1819: my $r=shift;
1820: my @studentdata=();
1821: {
1822: my $fh;
1823: if ($fh=Apache::File->new($r->dir_config('lonDaemons').
1824: '/tmp/'.$ENV{'form.datatoken'}.'.tmp')) {
1825: @studentdata=<$fh>;
1826: }
1827: }
1828: $ENV{'form.upfile'}=join('',@studentdata);
1829: }
1830:
1.56 matthew 1831: =pod
1832:
1.41 ng 1833: =item upfile_record_sep()
1834:
1835: Separate uploaded file into records
1836: returns array of records,
1837: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
1838:
1839: =cut
1.31 albertel 1840:
1841: sub upfile_record_sep {
1842: if ($ENV{'form.upfiletype'} eq 'xml') {
1843: } else {
1844: return split(/\n/,$ENV{'form.upfile'});
1845: }
1846: }
1847:
1.56 matthew 1848: =pod
1849:
1.41 ng 1850: =item record_sep($record)
1851:
1852: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
1853:
1854: =cut
1855:
1.31 albertel 1856: sub record_sep {
1857: my $record=shift;
1858: my %components=();
1859: if ($ENV{'form.upfiletype'} eq 'xml') {
1860: } elsif ($ENV{'form.upfiletype'} eq 'space') {
1861: my $i=0;
1862: foreach (split(/\s+/,$record)) {
1863: my $field=$_;
1864: $field=~s/^(\"|\')//;
1865: $field=~s/(\"|\')$//;
1866: $components{$i}=$field;
1867: $i++;
1868: }
1869: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
1870: my $i=0;
1871: foreach (split(/\t+/,$record)) {
1872: my $field=$_;
1873: $field=~s/^(\"|\')//;
1874: $field=~s/(\"|\')$//;
1875: $components{$i}=$field;
1876: $i++;
1877: }
1878: } else {
1879: my @allfields=split(/\,/,$record);
1880: my $i=0;
1881: my $j;
1882: for ($j=0;$j<=$#allfields;$j++) {
1883: my $field=$allfields[$j];
1884: if ($field=~/^\s*(\"|\')/) {
1885: my $delimiter=$1;
1886: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
1887: $j++;
1888: $field.=','.$allfields[$j];
1889: }
1890: $field=~s/^\s*$delimiter//;
1891: $field=~s/$delimiter\s*$//;
1892: }
1893: $components{$i}=$field;
1894: $i++;
1895: }
1896: }
1897: return %components;
1898: }
1899:
1.56 matthew 1900: =pod
1901:
1.41 ng 1902: =item upfile_select_html()
1903:
1904: return HTML code to select file and specify its type
1905:
1906: =cut
1907:
1.31 albertel 1908: sub upfile_select_html {
1909: return (<<'ENDUPFORM');
1.57 albertel 1910: <input type="file" name="upfile" size="50" />
1.31 albertel 1911: <br />Type: <select name="upfiletype">
1912: <option value="csv">CSV (comma separated values, spreadsheet)</option>
1913: <option value="space">Space separated</option>
1914: <option value="tab">Tabulator separated</option>
1915: <option value="xml">HTML/XML</option>
1916: </select>
1917: ENDUPFORM
1918: }
1919:
1.56 matthew 1920: =pod
1921:
1.41 ng 1922: =item csv_print_samples($r,$records)
1923:
1924: Prints a table of sample values from each column uploaded $r is an
1925: Apache Request ref, $records is an arrayref from
1926: &Apache::loncommon::upfile_record_sep
1927:
1928: =cut
1929:
1.31 albertel 1930: sub csv_print_samples {
1931: my ($r,$records) = @_;
1932: my (%sone,%stwo,%sthree);
1933: %sone=&record_sep($$records[0]);
1934: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
1935: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
1936:
1937: $r->print('Samples<br /><table border="2"><tr>');
1938: foreach (sort({$a <=> $b} keys(%sone))) { $r->print('<th>Column '.($_+1).'</th>'); }
1939: $r->print('</tr>');
1940: foreach my $hash (\%sone,\%stwo,\%sthree) {
1941: $r->print('<tr>');
1942: foreach (sort({$a <=> $b} keys(%sone))) {
1943: $r->print('<td>');
1944: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
1945: $r->print('</td>');
1946: }
1947: $r->print('</tr>');
1948: }
1949: $r->print('</tr></table><br />'."\n");
1950: }
1951:
1.56 matthew 1952: =pod
1953:
1.41 ng 1954: =item csv_print_select_table($r,$records,$d)
1955:
1956: Prints a table to create associations between values and table columns.
1957: $r is an Apache Request ref,
1958: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
1959: $d is an array of 2 element arrays (internal name, displayed name)
1960:
1961: =cut
1962:
1.31 albertel 1963: sub csv_print_select_table {
1964: my ($r,$records,$d) = @_;
1965: my $i=0;my %sone;
1966: %sone=&record_sep($$records[0]);
1967: $r->print('Associate columns with student attributes.'."\n".
1968: '<table border="2"><tr><th>Attribute</th><th>Column</th></tr>'."\n");
1969: foreach (@$d) {
1970: my ($value,$display)=@{ $_ };
1971: $r->print('<tr><td>'.$display.'</td>');
1972:
1973: $r->print('<td><select name=f'.$i.
1.32 matthew 1974: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 1975: $r->print('<option value="none"></option>');
1976: foreach (sort({$a <=> $b} keys(%sone))) {
1977: $r->print('<option value="'.$_.'">Column '.($_+1).'</option>');
1978: }
1979: $r->print('</select></td></tr>'."\n");
1980: $i++;
1981: }
1982: $i--;
1983: return $i;
1984: }
1.56 matthew 1985:
1986: =pod
1.31 albertel 1987:
1.41 ng 1988: =item csv_samples_select_table($r,$records,$d)
1989:
1990: Prints a table of sample values from the upload and can make associate samples to internal names.
1991:
1992: $r is an Apache Request ref,
1993: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
1994: $d is an array of 2 element arrays (internal name, displayed name)
1995:
1996: =cut
1997:
1.31 albertel 1998: sub csv_samples_select_table {
1999: my ($r,$records,$d) = @_;
2000: my %sone; my %stwo; my %sthree;
2001: my $i=0;
2002:
2003: $r->print('<table border=2><tr><th>Field</th><th>Samples</th></tr>');
2004: %sone=&record_sep($$records[0]);
2005: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2006: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2007:
2008: foreach (sort keys %sone) {
2009: $r->print('<tr><td><select name=f'.$i.
1.32 matthew 2010: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 2011: foreach (@$d) {
2012: my ($value,$display)=@{ $_ };
2013: $r->print('<option value='.$value.'>'.$display.'</option>');
2014: }
2015: $r->print('</select></td><td>');
2016: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
2017: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
2018: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
2019: $r->print('</td></tr>');
2020: $i++;
2021: }
2022: $i--;
2023: return($i);
1.25 albertel 2024: }
1.84 albertel 2025:
1.85 albertel 2026: =pod
2027:
2028: =item check_if_partid_hidden($id,$symb,$udom,$uname)
2029:
2030: Returns either 1 or undef
2031:
2032: 1 if the part is to be hidden, undef if it is to be shown
2033:
2034: Arguments are:
2035:
2036: $id the id of the part to be checked
2037: $symb, optional the symb of the resource to check
2038: $udom, optional the domain of the user to check for
2039: $uname, optional the username of the user to check for
2040:
2041: =cut
1.84 albertel 2042:
2043: sub check_if_partid_hidden {
2044: my ($id,$symb,$udom,$uname) = @_;
2045: my $hiddenparts=&Apache::lonnet::EXT('resource.0.parameter_hiddenparts',
2046: $symb,$udom,$uname);
2047: my @hiddenlist=split(/,/,$hiddenparts);
2048: foreach my $checkid (@hiddenlist) {
2049: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return 1; }
2050: }
2051: return undef;
2052: }
2053:
2054:
2055:
1.1 albertel 2056: 1;
2057: __END__;
1.17 harris41 2058:
1.41 ng 2059: =pod
2060:
2061: =back
2062:
2063: =head2 Access .tab File Data
2064:
2065: =over 4
2066:
1.35 matthew 2067: =item languageids()
1.17 harris41 2068:
1.35 matthew 2069: returns list of all language ids
1.17 harris41 2070:
1.35 matthew 2071: =item languagedescription()
1.17 harris41 2072:
1.35 matthew 2073: returns description of a specified language id
1.17 harris41 2074:
1.35 matthew 2075: =item copyrightids()
1.17 harris41 2076:
1.35 matthew 2077: returns list of all copyrights
1.17 harris41 2078:
1.35 matthew 2079: =item copyrightdescription()
1.17 harris41 2080:
1.35 matthew 2081: returns description of a specified copyright id
1.17 harris41 2082:
1.35 matthew 2083: =item filecategories()
1.17 harris41 2084:
1.35 matthew 2085: returns list of all file categories
1.17 harris41 2086:
1.35 matthew 2087: =item filecategorytypes()
1.17 harris41 2088:
1.35 matthew 2089: returns list of file types belonging to a given file
1.17 harris41 2090: category
2091:
1.35 matthew 2092: =item fileembstyle()
1.17 harris41 2093:
1.35 matthew 2094: returns embedding style for a specified file type
1.17 harris41 2095:
1.35 matthew 2096: =item filedescription()
1.17 harris41 2097:
1.35 matthew 2098: returns description for a specified file type
1.17 harris41 2099:
1.35 matthew 2100: =item filedescriptionex()
1.17 harris41 2101:
1.35 matthew 2102: returns description for a specified file type with
1.17 harris41 2103: extra formatting
2104:
1.41 ng 2105: =back
2106:
2107: =head2 Alternate Problem Views
2108:
2109: =over 4
2110:
1.35 matthew 2111: =item get_previous_attempt()
1.17 harris41 2112:
1.35 matthew 2113: return string with previous attempt on problem
1.17 harris41 2114:
1.35 matthew 2115: =item get_student_view()
1.17 harris41 2116:
1.35 matthew 2117: show a snapshot of what student was looking at
1.17 harris41 2118:
1.35 matthew 2119: =item get_student_answers()
1.17 harris41 2120:
1.35 matthew 2121: show a snapshot of how student was answering problem
1.17 harris41 2122:
1.41 ng 2123: =back
2124:
2125: =head2 HTTP Helper
2126:
2127: =over 4
2128:
2129: =item get_unprocessed_cgi($query,$possible_names)
2130:
2131: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2132: $query. The parameters listed in $possible_names (an array reference),
2133: will be set in $ENV{'form.name'} if they do not already exist.
1.17 harris41 2134:
1.41 ng 2135: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2136: $possible_names is an ref to an array of form element names. As an example:
2137: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2138: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
1.17 harris41 2139:
1.35 matthew 2140: =item cacheheader()
1.17 harris41 2141:
1.35 matthew 2142: returns cache-controlling header code
1.17 harris41 2143:
1.65 matthew 2144: =item no_cache($r)
1.17 harris41 2145:
1.35 matthew 2146: specifies header code to not have cache
1.25 albertel 2147:
1.35 matthew 2148: =item add_to_env($name,$value)
1.25 albertel 2149:
1.35 matthew 2150: adds $name to the %ENV hash with value
1.25 albertel 2151: $value, if $name already exists, the entry is converted to an array
2152: reference and $value is added to the array.
1.17 harris41 2153:
2154: =back
2155:
2156: =cut
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