Annotation of loncom/interface/loncommon.pm, revision 1.94
1.10 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # a pile of common routines
1.10 albertel 3: #
1.94 ! www 4: # $Id: loncommon.pm,v 1.93 2003/04/03 03:08:12 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.'","'.$unameele.
1.92 www 349: '","'.$udomele.'");'."'>Select User</a>";
1.91 www 350: }
351:
352: sub coursebrowser_javascript {
353: return (<<'ENDSTDBRW');
354: <script type="text/javascript" language="Javascript" >
355: var stdeditbrowser;
356: function opencrsbrowser(formname,uname,udom) {
357: var url = '/adm/pickcourse?';
358: var filter;
359: if (filter != null) {
360: if (filter != '') {
361: url += 'filter='+filter+'&';
362: }
363: }
364: url += 'form=' + formname + '&cnumelement='+uname+
365: '&cdomelement='+udom;
366: var title = 'Course Browser';
367: var options = 'scrollbars=1,resizable=1,menubar=0';
368: options += ',width=700,height=600';
369: stdeditbrowser = open(url,title,options,'1');
370: stdeditbrowser.focus();
371: }
372: </script>
373: ENDSTDBRW
374: }
375:
376: sub selectcourse_link {
377: my ($form,$unameele,$udomele)=@_;
378: return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
379: '","'.$udomele.'");'."'>Select Course</a>";
1.74 www 380: }
1.42 matthew 381:
382: ###############################################################
383:
384: =pod
1.36 matthew 385:
386: =item linked_select_forms(...)
387:
388: linked_select_forms returns a string containing a <script></script> block
389: and html for two <select> menus. The select menus will be linked in that
390: changing the value of the first menu will result in new values being placed
391: in the second menu. The values in the select menu will appear in alphabetical
392: order.
393:
394: linked_select_forms takes the following ordered inputs:
395:
396: =over 4
397:
398: =item $formname, the name of the <form> tag
399:
400: =item $middletext, the text which appears between the <select> tags
401:
402: =item $firstdefault, the default value for the first menu
403:
404: =item $firstselectname, the name of the first <select> tag
405:
406: =item $secondselectname, the name of the second <select> tag
407:
408: =item $hashref, a reference to a hash containing the data for the menus.
409:
1.41 ng 410: =back
411:
1.36 matthew 412: Below is an example of such a hash. Only the 'text', 'default', and
413: 'select2' keys must appear as stated. keys(%menu) are the possible
414: values for the first select menu. The text that coincides with the
1.41 ng 415: first menu value is given in $menu{$choice1}->{'text'}. The values
1.36 matthew 416: and text for the second menu are given in the hash pointed to by
417: $menu{$choice1}->{'select2'}.
418:
1.41 ng 419: my %menu = ( A1 => { text =>"Choice A1" ,
1.36 matthew 420: default => "B3",
421: select2 => {
422: B1 => "Choice B1",
423: B2 => "Choice B2",
424: B3 => "Choice B3",
425: B4 => "Choice B4"
426: }
427: },
428: A2 => { text =>"Choice A2" ,
429: default => "C2",
430: select2 => {
431: C1 => "Choice C1",
432: C2 => "Choice C2",
433: C3 => "Choice C3"
434: }
435: },
436: A3 => { text =>"Choice A3" ,
437: default => "D6",
438: select2 => {
439: D1 => "Choice D1",
440: D2 => "Choice D2",
441: D3 => "Choice D3",
442: D4 => "Choice D4",
443: D5 => "Choice D5",
444: D6 => "Choice D6",
445: D7 => "Choice D7"
446: }
447: }
448: );
449:
450: =cut
451:
452: # ------------------------------------------------
453:
454: sub linked_select_forms {
455: my ($formname,
456: $middletext,
457: $firstdefault,
458: $firstselectname,
459: $secondselectname,
460: $hashref
461: ) = @_;
462: my $second = "document.$formname.$secondselectname";
463: my $first = "document.$formname.$firstselectname";
464: # output the javascript to do the changing
465: my $result = '';
466: $result.="<script>\n";
467: $result.="var select2data = new Object();\n";
468: $" = '","';
469: my $debug = '';
470: foreach my $s1 (sort(keys(%$hashref))) {
471: $result.="select2data.d_$s1 = new Object();\n";
472: $result.="select2data.d_$s1.def = new String('".
473: $hashref->{$s1}->{'default'}."');\n";
474: $result.="select2data.d_$s1.values = new Array(";
475: my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
476: $result.="\"@s2values\");\n";
477: $result.="select2data.d_$s1.texts = new Array(";
478: my @s2texts;
479: foreach my $value (@s2values) {
480: push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
481: }
482: $result.="\"@s2texts\");\n";
483: }
484: $"=' ';
485: $result.= <<"END";
486:
487: function select1_changed() {
488: // Determine new choice
489: var newvalue = "d_" + $first.value;
490: // update select2
491: var values = select2data[newvalue].values;
492: var texts = select2data[newvalue].texts;
493: var select2def = select2data[newvalue].def;
494: var i;
495: // out with the old
496: for (i = 0; i < $second.options.length; i++) {
497: $second.options[i] = null;
498: }
499: // in with the nuclear
500: for (i=0;i<values.length; i++) {
501: $second.options[i] = new Option(values[i]);
502: $second.options[i].text = texts[i];
503: if (values[i] == select2def) {
504: $second.options[i].selected = true;
505: }
506: }
507: }
508: </script>
509: END
510: # output the initial values for the selection lists
511: $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
512: foreach my $value (sort(keys(%$hashref))) {
513: $result.=" <option value=\"$value\" ";
514: $result.=" selected=\"true\" " if ($value eq $firstdefault);
515: $result.=">$hashref->{$value}->{'text'}</option>\n";
516: }
517: $result .= "</select>\n";
518: my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
519: $result .= $middletext;
520: $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
521: my $seconddefault = $hashref->{$firstdefault}->{'default'};
522: foreach my $value (sort(keys(%select2))) {
523: $result.=" <option value=\"$value\" ";
524: $result.=" selected=\"true\" " if ($value eq $seconddefault);
525: $result.=">$select2{$value}</option>\n";
526: }
527: $result .= "</select>\n";
528: # return $debug;
529: return $result;
530: } # end of sub linked_select_forms {
531:
1.33 matthew 532: ###############################################################
1.44 bowersj2 533:
1.45 matthew 534: =pod
1.44 bowersj2 535:
1.48 bowersj2 536: =item help_open_topic($topic, $text, $stayOnPage, $width, $height)
1.44 bowersj2 537:
538: 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.
539:
1.48 bowersj2 540: $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.
541:
1.44 bowersj2 542: $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.)
543:
544: $width and $height are optional numerical parameters that will override the width and height of the popped up window, which may be useful for certain help topics with big pictures included.
545:
546: =cut
547:
548: sub help_open_topic {
1.48 bowersj2 549: my ($topic, $text, $stayOnPage, $width, $height) = @_;
550: $text = "" if (not defined $text);
1.44 bowersj2 551: $stayOnPage = 0 if (not defined $stayOnPage);
1.79 www 552: if ($ENV{'browser.interface'} eq 'textual') {
553: $stayOnPage=1;
554: }
1.44 bowersj2 555: $width = 350 if (not defined $width);
556: $height = 400 if (not defined $height);
557: my $filename = $topic;
558: $filename =~ s/ /_/g;
559:
1.48 bowersj2 560: my $template = "";
561: my $link;
1.44 bowersj2 562:
563: if (!$stayOnPage)
564: {
1.72 bowersj2 565: $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
1.44 bowersj2 566: }
567: else
568: {
1.48 bowersj2 569: $link = "/adm/help/${filename}.hlp";
570: }
571:
572: # Add the text
573: if ($text ne "")
574: {
1.77 www 575: $template .=
576: "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
1.78 www 577: "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
1.48 bowersj2 578: }
579:
580: # Add the graphic
581: $template .= <<"ENDTEMPLATE";
1.77 www 582: <a href="$link"><image src="/adm/help/gif/smallHelp.gif" border="0" alt="(Help: $topic)" /></a>
1.44 bowersj2 583: ENDTEMPLATE
1.78 www 584: if ($text ne '') { $template.='</td></tr></table>' };
1.44 bowersj2 585: return $template;
586:
587: }
1.37 matthew 588:
1.45 matthew 589: =pod
590:
1.37 matthew 591: =item csv_translate($text)
592:
593: Translate $text to allow it to be output as a 'comma seperated values'
594: format.
595:
596: =cut
597:
598: sub csv_translate {
599: my $text = shift;
600: $text =~ s/\"/\"\"/g;
601: $text =~ s/\n//g;
602: return $text;
603: }
604:
605: ###############################################################
1.33 matthew 606: ## Home server <option> list generating code ##
607: ###############################################################
1.35 matthew 608: #-------------------------------------------
609:
1.45 matthew 610: =pod
611:
1.35 matthew 612: =item get_domains()
613:
614: Returns an array containing each of the domains listed in the hosts.tab
615: file.
616:
617: =cut
618:
619: #-------------------------------------------
1.34 matthew 620: sub get_domains {
621: # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
622: my @domains;
623: my %seen;
624: foreach (sort values(%Apache::lonnet::hostdom)) {
625: push (@domains,$_) unless $seen{$_}++;
626: }
627: return @domains;
628: }
1.88 www 629:
630: #-------------------------------------------
631:
632: =pod
633:
634: =item select_form($defdom,$name,%hash)
635:
636: Returns a string containing a <select name='$name' size='1'> form to
637: allow a user to select options from a hash option_name => displayed text.
638: See lonrights.pm for an example invocation and use.
639:
640: =cut
641:
642: #-------------------------------------------
643: sub select_form {
644: my ($def,$name,%hash) = @_;
645: my $selectform = "<select name=\"$name\" size=\"1\">\n";
1.89 www 646: foreach (sort keys %hash) {
1.88 www 647: $selectform.="<option value=\"$_\" ".
648: ($_ eq $def ? 'selected' : '').
649: ">".$hash{$_}."</option>\n";
650: }
651: $selectform.="</select>";
652: return $selectform;
653: }
654:
1.34 matthew 655:
1.35 matthew 656: #-------------------------------------------
657:
1.45 matthew 658: =pod
659:
1.90 www 660: =item select_dom_form($defdom,$name,$includeempty)
1.35 matthew 661:
662: Returns a string containing a <select name='$name' size='1'> form to
663: allow a user to select the domain to preform an operation in.
664: See loncreateuser.pm for an example invocation and use.
665:
1.90 www 666: If the $includeempty flag is set, it also includes an empty choice ("no domain
667: selected");
668:
1.35 matthew 669: =cut
670:
671: #-------------------------------------------
1.34 matthew 672: sub select_dom_form {
1.90 www 673: my ($defdom,$name,$includeempty) = @_;
1.34 matthew 674: my @domains = get_domains();
1.90 www 675: if ($includeempty) { @domains=('',@domains); }
1.34 matthew 676: my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
677: foreach (@domains) {
678: $selectdomain.="<option value=\"$_\" ".
679: ($_ eq $defdom ? 'selected' : '').
680: ">$_</option>\n";
681: }
682: $selectdomain.="</select>";
683: return $selectdomain;
684: }
685:
1.35 matthew 686: #-------------------------------------------
687:
1.45 matthew 688: =pod
689:
1.52 matthew 690: =item get_library_servers($domain)
1.35 matthew 691:
692: Returns a hash which contains keys like '103l3' and values like
693: 'kirk.lite.msu.edu'. All of the keys will be for machines in the
694: given $domain.
695:
696: =cut
697:
698: #-------------------------------------------
1.52 matthew 699: sub get_library_servers {
1.33 matthew 700: my $domain = shift;
1.52 matthew 701: my %library_servers;
1.33 matthew 702: foreach (keys(%Apache::lonnet::libserv)) {
703: if ($Apache::lonnet::hostdom{$_} eq $domain) {
1.52 matthew 704: $library_servers{$_} = $Apache::lonnet::hostname{$_};
1.33 matthew 705: }
706: }
1.52 matthew 707: return %library_servers;
1.33 matthew 708: }
709:
1.35 matthew 710: #-------------------------------------------
711:
1.45 matthew 712: =pod
713:
1.35 matthew 714: =item home_server_option_list($domain)
715:
716: returns a string which contains an <option> list to be used in a
717: <select> form input. See loncreateuser.pm for an example.
718:
719: =cut
720:
721: #-------------------------------------------
1.33 matthew 722: sub home_server_option_list {
723: my $domain = shift;
1.52 matthew 724: my %servers = &get_library_servers($domain);
1.33 matthew 725: my $result = '';
726: foreach (sort keys(%servers)) {
727: $result.=
728: '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
729: }
730: return $result;
731: }
732: ###############################################################
733: ## End of home server <option> list generating code ##
734: ###############################################################
1.87 matthew 735:
736: ###############################################################
737: ###############################################################
738:
739: =pod
740:
741: =item &decode_user_agent()
742:
743: Inputs: $r
744:
745: Outputs:
746:
747: =over 4
748:
749: =item $httpbrowser
750:
751: =item $clientbrowser
752:
753: =item $clientversion
754:
755: =item $clientmathml
756:
757: =item $clientunicode
758:
759: =item $clientos
760:
761: =back
762:
763: =cut
764:
765: ###############################################################
766: ###############################################################
767: sub decode_user_agent {
768: my @browsertype=split(/\&/,$Apache::lonnet::perlvar{"lonBrowsDet"});
769: my %mathcap=split(/\&/,$$Apache::lonnet::perlvar{"lonMathML"});
770: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
771: my $clientbrowser='unknown';
772: my $clientversion='0';
773: my $clientmathml='';
774: my $clientunicode='0';
775: for (my $i=0;$i<=$#browsertype;$i++) {
776: my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
777: if (($httpbrowser=~/$match/i) && ($httpbrowser!~/$notmatch/i)) {
778: $clientbrowser=$bname;
779: $httpbrowser=~/$vreg/i;
780: $clientversion=$1;
781: $clientmathml=($clientversion>=$minv);
782: $clientunicode=($clientversion>=$univ);
783: }
784: }
785: my $clientos='unknown';
786: if (($httpbrowser=~/linux/i) ||
787: ($httpbrowser=~/unix/i) ||
788: ($httpbrowser=~/ux/i) ||
789: ($httpbrowser=~/solaris/i)) { $clientos='unix'; }
790: if (($httpbrowser=~/vax/i) ||
791: ($httpbrowser=~/vms/i)) { $clientos='vms'; }
792: if ($httpbrowser=~/next/i) { $clientos='next'; }
793: if (($httpbrowser=~/mac/i) ||
794: ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
795: if ($httpbrowser=~/win/i) { $clientos='win'; }
796: if ($httpbrowser=~/embed/i) { $clientos='pda'; }
797: return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
798: $clientunicode,$clientos,);
799: }
800:
801: ###############################################################
802: ###############################################################
803:
1.32 matthew 804:
805: ###############################################################
806: ## Authentication changing form generation subroutines ##
807: ###############################################################
808: ##
809: ## All of the authform_xxxxxxx subroutines take their inputs in a
810: ## hash, and have reasonable default values.
811: ##
812: ## formname = the name given in the <form> tag.
1.35 matthew 813: #-------------------------------------------
814:
1.45 matthew 815: =pod
816:
1.35 matthew 817: =item authform_xxxxxx
818:
819: The authform_xxxxxx subroutines provide javascript and html forms which
820: handle some of the conveniences required for authentication forms.
821: This is not an optimal method, but it works.
822:
823: See loncreateuser.pm for invocation and use examples.
824:
825: =over 4
826:
827: =item authform_header
828:
829: =item authform_authorwarning
830:
831: =item authform_nochange
832:
833: =item authform_kerberos
834:
835: =item authform_internal
836:
837: =item authform_filesystem
838:
839: =back
840:
841: =cut
842:
843: #-------------------------------------------
1.32 matthew 844: sub authform_header{
845: my %in = (
846: formname => 'cu',
1.80 albertel 847: kerb_def_dom => '',
1.32 matthew 848: @_,
849: );
850: $in{'formname'} = 'document.' . $in{'formname'};
851: my $result='';
1.80 albertel 852:
853: #---------------------------------------------- Code for upper case translation
854: my $Javascript_toUpperCase;
855: unless ($in{kerb_def_dom}) {
856: $Javascript_toUpperCase =<<"END";
857: switch (choice) {
858: case 'krb': currentform.elements[choicearg].value =
859: currentform.elements[choicearg].value.toUpperCase();
860: break;
861: default:
862: }
863: END
864: } else {
865: $Javascript_toUpperCase = "";
866: }
867:
1.32 matthew 868: $result.=<<"END";
869: var current = new Object();
870: current.radiovalue = 'nochange';
871: current.argfield = null;
872:
873: function changed_radio(choice,currentform) {
874: var choicearg = choice + 'arg';
875: // If a radio button in changed, we need to change the argfield
876: if (current.radiovalue != choice) {
877: current.radiovalue = choice;
878: if (current.argfield != null) {
879: currentform.elements[current.argfield].value = '';
880: }
881: if (choice == 'nochange') {
882: current.argfield = null;
883: } else {
884: current.argfield = choicearg;
885: switch(choice) {
886: case 'krb':
887: currentform.elements[current.argfield].value =
888: "$in{'kerb_def_dom'}";
889: break;
890: default:
891: break;
892: }
893: }
894: }
895: return;
896: }
1.22 www 897:
1.32 matthew 898: function changed_text(choice,currentform) {
899: var choicearg = choice + 'arg';
900: if (currentform.elements[choicearg].value !='') {
1.80 albertel 901: $Javascript_toUpperCase
1.32 matthew 902: // clear old field
903: if ((current.argfield != choicearg) && (current.argfield != null)) {
904: currentform.elements[current.argfield].value = '';
905: }
906: current.argfield = choicearg;
907: }
908: set_auth_radio_buttons(choice,currentform);
909: return;
1.20 www 910: }
1.32 matthew 911:
912: function set_auth_radio_buttons(newvalue,currentform) {
913: var i=0;
914: while (i < currentform.login.length) {
915: if (currentform.login[i].value == newvalue) { break; }
916: i++;
917: }
918: if (i == currentform.login.length) {
919: return;
920: }
921: current.radiovalue = newvalue;
922: currentform.login[i].checked = true;
923: return;
924: }
925: END
926: return $result;
927: }
928:
929: sub authform_authorwarning{
930: my $result='';
931: $result=<<"END";
932: <i>As a general rule, only authors or co-authors should be filesystem
933: authenticated (which allows access to the server filesystem).</i>
934: END
935: return $result;
936: }
937:
938: sub authform_nochange{
939: my %in = (
940: formname => 'document.cu',
941: kerb_def_dom => 'MSU.EDU',
942: @_,
943: );
944: my $result='';
945: $result.=<<"END";
946: <input type="radio" name="login" value="nochange" checked="checked"
1.57 albertel 947: onclick="javascript:changed_radio('nochange',$in{'formname'});" />
1.32 matthew 948: Do not change login data
949: END
950: return $result;
951: }
952:
953: sub authform_kerberos{
954: my %in = (
955: formname => 'document.cu',
956: kerb_def_dom => 'MSU.EDU',
1.80 albertel 957: kerb_def_auth => 'krb4',
1.32 matthew 958: @_,
959: );
960: my $result='';
1.80 albertel 961: my $check4;
962: my $check5;
963: if ($in{'kerb_def_auth'} eq 'krb5') {
964: $check5 = " checked=\"on\"";
965: } else {
966: $check4 = " checked=\"on\"";
967: }
1.32 matthew 968: $result.=<<"END";
969: <input type="radio" name="login" value="krb"
970: onclick="javascript:changed_radio('krb',$in{'formname'});"
1.57 albertel 971: onchange="javascript:changed_radio('krb',$in{'formname'});" />
1.32 matthew 972: Kerberos authenticated with domain
1.80 albertel 973: <input type="text" size="10" name="krbarg" value="$in{'kerb_def_dom'}"
1.57 albertel 974: onchange="javascript:changed_text('krb',$in{'formname'});" />
1.80 albertel 975: <input type="radio" name="krbver" value="4" $check4 />Version 4
976: <input type="radio" name="krbver" value="5" $check5 />Version 5
1.32 matthew 977: END
978: return $result;
979: }
980:
981: sub authform_internal{
982: my %args = (
983: formname => 'document.cu',
984: kerb_def_dom => 'MSU.EDU',
985: @_,
986: );
987: my $result='';
988: $result.=<<"END";
989: <input type="radio" name="login" value="int"
990: onchange="javascript:changed_radio('int',$args{'formname'});"
1.57 albertel 991: onclick="javascript:changed_radio('int',$args{'formname'});" />
1.32 matthew 992: Internally authenticated (with initial password
993: <input type="text" size="10" name="intarg" value=""
1.75 www 994: onchange="javascript:changed_text('int',$args{'formname'});" />)
1.32 matthew 995: END
996: return $result;
997: }
998:
999: sub authform_local{
1000: my %in = (
1001: formname => 'document.cu',
1002: kerb_def_dom => 'MSU.EDU',
1003: @_,
1004: );
1005: my $result='';
1006: $result.=<<"END";
1007: <input type="radio" name="login" value="loc"
1008: onchange="javascript:changed_radio('loc',$in{'formname'});"
1.57 albertel 1009: onclick="javascript:changed_radio('loc',$in{'formname'});" />
1.32 matthew 1010: Local Authentication with argument
1011: <input type="text" size="10" name="locarg" value=""
1.57 albertel 1012: onchange="javascript:changed_text('loc',$in{'formname'});" />
1.32 matthew 1013: END
1014: return $result;
1015: }
1016:
1017: sub authform_filesystem{
1018: my %in = (
1019: formname => 'document.cu',
1020: kerb_def_dom => 'MSU.EDU',
1021: @_,
1022: );
1023: my $result='';
1024: $result.=<<"END";
1025: <input type="radio" name="login" value="fsys"
1026: onchange="javascript:changed_radio('fsys',$in{'formname'});"
1.57 albertel 1027: onclick="javascript:changed_radio('fsys',$in{'formname'});" />
1.32 matthew 1028: Filesystem authenticated (with initial password
1029: <input type="text" size="10" name="fsysarg" value=""
1.75 www 1030: onchange="javascript:changed_text('fsys',$in{'formname'});">)
1.32 matthew 1031: END
1032: return $result;
1033: }
1034:
1035: ###############################################################
1036: ## End Authentication changing form generation functions ##
1.80 albertel 1037: ###############################################################
1038:
1039: ###############################################################
1040: ## Get Authentication Defaults for Domain ##
1041: ###############################################################
1042: ##
1043: ## Returns default authentication type and an associated argument
1044: ## as listed in file domain.tab
1045: ##
1046: #-------------------------------------------
1047:
1048: =pod
1049:
1050: =item get_auth_defaults
1051:
1052: get_auth_defaults($target_domain) returns the default authentication
1053: type and an associated argument (initial password or a kerberos domain).
1054: These values are stored in lonTabs/domain.tab
1055:
1056: ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
1057:
1058: If target_domain is not found in domain.tab, returns nothing ('').
1059:
1060: =over 4
1061:
1062: =item get_auth_defaults
1063:
1064: =back
1065:
1066: =cut
1067:
1068: #-------------------------------------------
1069: sub get_auth_defaults {
1070: my $domain=shift;
1071: return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
1072: }
1073: ###############################################################
1074: ## End Get Authentication Defaults for Domain ##
1075: ###############################################################
1076:
1077: ###############################################################
1078: ## Get Kerberos Defaults for Domain ##
1079: ###############################################################
1080: ##
1081: ## Returns default kerberos version and an associated argument
1082: ## as listed in file domain.tab. If not listed, provides
1083: ## appropriate default domain and kerberos version.
1084: ##
1085: #-------------------------------------------
1086:
1087: =pod
1088:
1089: =item get_kerberos_defaults
1090:
1091: get_kerberos_defaults($target_domain) returns the default kerberos
1092: version and domain. If not found in domain.tabs, it defaults to
1093: version 4 and the domain of the server.
1094:
1095: ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
1096:
1097: =over 4
1098:
1099: =item get_kerberos_defaults
1100:
1101: =back
1102:
1103: =cut
1104:
1105: #-------------------------------------------
1106: sub get_kerberos_defaults {
1107: my $domain=shift;
1108: my ($krbdef,$krbdefdom) =
1109: &Apache::loncommon::get_auth_defaults($domain);
1110: unless ($krbdef =~/^krb/ && $krbdefdom) {
1111: $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
1112: my $krbdefdom=$1;
1113: $krbdefdom=~tr/a-z/A-Z/;
1114: $krbdef = "krb4";
1115: }
1116: return ($krbdef,$krbdefdom);
1117: }
1118: ###############################################################
1119: ## End Get Kerberos Defaults for Domain ##
1.32 matthew 1120: ###############################################################
1121:
1.46 matthew 1122: ###############################################################
1123: ## Thesaurus Functions ##
1124: ###############################################################
1.20 www 1125:
1.46 matthew 1126: =pod
1.20 www 1127:
1.46 matthew 1128: =item initialize_keywords
1129:
1130: Initializes the package variable %Keywords if it is empty. Uses the
1131: package variable $thesaurus_db_file.
1132:
1133: =cut
1134:
1135: ###################################################
1136:
1137: sub initialize_keywords {
1138: return 1 if (scalar keys(%Keywords));
1139: # If we are here, %Keywords is empty, so fill it up
1140: # Make sure the file we need exists...
1141: if (! -e $thesaurus_db_file) {
1142: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file".
1143: " failed because it does not exist");
1144: return 0;
1145: }
1146: # Set up the hash as a database
1147: my %thesaurus_db;
1148: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1149: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1150: &Apache::lonnet::logthis("Could not tie \%thesaurus_db to ".
1151: $thesaurus_db_file);
1152: return 0;
1153: }
1154: # Get the average number of appearances of a word.
1155: my $avecount = $thesaurus_db{'average.count'};
1156: # Put keywords (those that appear > average) into %Keywords
1157: while (my ($word,$data)=each (%thesaurus_db)) {
1158: my ($count,undef) = split /:/,$data;
1159: $Keywords{$word}++ if ($count > $avecount);
1160: }
1161: untie %thesaurus_db;
1162: # Remove special values from %Keywords.
1163: foreach ('total.count','average.count') {
1164: delete($Keywords{$_}) if (exists($Keywords{$_}));
1165: }
1166: return 1;
1167: }
1168:
1169: ###################################################
1170:
1171: =pod
1172:
1173: =item keyword($word)
1174:
1175: Returns true if $word is a keyword. A keyword is a word that appears more
1176: than the average number of times in the thesaurus database. Calls
1177: &initialize_keywords
1178:
1179: =cut
1180:
1181: ###################################################
1.20 www 1182:
1183: sub keyword {
1.46 matthew 1184: return if (!&initialize_keywords());
1185: my $word=lc(shift());
1186: $word=~s/\W//g;
1187: return exists($Keywords{$word});
1.20 www 1188: }
1.46 matthew 1189:
1190: ###############################################################
1191:
1192: =pod
1.20 www 1193:
1.46 matthew 1194: =item get_related_words
1195:
1196: Look up a word in the thesaurus. Takes a scalar arguement and returns
1197: an array of words. If the keyword is not in the thesaurus, an empty array
1198: will be returned. The order of the words returned is determined by the
1199: database which holds them.
1200:
1201: Uses global $thesaurus_db_file.
1202:
1203: =cut
1204:
1205: ###############################################################
1206: sub get_related_words {
1207: my $keyword = shift;
1208: my %thesaurus_db;
1209: if (! -e $thesaurus_db_file) {
1210: &Apache::lonnet::logthis("Attempt to access $thesaurus_db_file ".
1211: "failed because the file does not exist");
1212: return ();
1213: }
1214: if (! tie(%thesaurus_db,'GDBM_File',
1.53 albertel 1215: $thesaurus_db_file,&GDBM_READER(),0640)){
1.46 matthew 1216: return ();
1217: }
1218: my @Words=();
1219: if (exists($thesaurus_db{$keyword})) {
1220: $_ = $thesaurus_db{$keyword};
1221: (undef,@Words) = split/:/; # The first element is the number of times
1222: # the word appears. We do not need it now.
1223: for (my $i=0;$i<=$#Words;$i++) {
1224: ($Words[$i],undef)= split/\,/,$Words[$i];
1.20 www 1225: }
1226: }
1.46 matthew 1227: untie %thesaurus_db;
1228: return @Words;
1.14 harris41 1229: }
1.46 matthew 1230:
1231: ###############################################################
1232: ## End Thesaurus Functions ##
1233: ###############################################################
1.61 www 1234:
1235: # -------------------------------------------------------------- Plaintext name
1.81 albertel 1236: =pod
1237:
1238: =item plainname($uname,$udom)
1239:
1240: Gets a users name and returns it as a string in
1241: "first middle last generation"
1242: form
1243:
1244: =cut
1.61 www 1245:
1.81 albertel 1246: ###############################################################
1.61 www 1247: sub plainname {
1248: my ($uname,$udom)=@_;
1249: my %names=&Apache::lonnet::get('environment',
1250: ['firstname','middlename','lastname','generation'],
1251: $udom,$uname);
1.62 www 1252: my $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1.61 www 1253: $names{'lastname'}.' '.$names{'generation'};
1.62 www 1254: $name=~s/\s+$//;
1255: $name=~s/\s+/ /g;
1256: return $name;
1.61 www 1257: }
1.66 www 1258:
1259: # -------------------------------------------------------------------- Nickname
1.81 albertel 1260: =pod
1261:
1262: =item nickname($uname,$udom)
1263:
1264: Gets a users name and returns it as a string as
1265:
1266: ""nickname""
1.66 www 1267:
1.81 albertel 1268: if the user has a nickname or
1269:
1270: "first middle last generation"
1271:
1272: if the user does not
1273:
1274: =cut
1.66 www 1275:
1276: sub nickname {
1277: my ($uname,$udom)=@_;
1278: my %names=&Apache::lonnet::get('environment',
1279: ['nickname','firstname','middlename','lastname','generation'],$udom,$uname);
1.68 albertel 1280: my $name=$names{'nickname'};
1.66 www 1281: if ($name) {
1282: $name='"'.$name.'"';
1283: } else {
1284: $name=$names{'firstname'}.' '.$names{'middlename'}.' '.
1285: $names{'lastname'}.' '.$names{'generation'};
1286: $name=~s/\s+$//;
1287: $name=~s/\s+/ /g;
1288: }
1289: return $name;
1290: }
1291:
1.61 www 1292:
1293: # ------------------------------------------------------------------ Screenname
1.81 albertel 1294:
1295: =pod
1296:
1297: =item screenname($uname,$udom)
1298:
1299: Gets a users screenname and returns it as a string
1300:
1301: =cut
1.61 www 1302:
1303: sub screenname {
1304: my ($uname,$udom)=@_;
1305: my %names=
1306: &Apache::lonnet::get('environment',['screenname'],$udom,$uname);
1.68 albertel 1307: return $names{'screenname'};
1.62 www 1308: }
1309:
1310: # ------------------------------------------------------------- Message Wrapper
1311:
1312: sub messagewrapper {
1313: my ($link,$un,$do)=@_;
1314: return
1315: "<a href='/adm/email?compose=individual&recname=$un&recdom=$do'>$link</a>";
1.74 www 1316: }
1317: # --------------------------------------------------------------- Notes Wrapper
1318:
1319: sub noteswrapper {
1320: my ($link,$un,$do)=@_;
1321: return
1322: "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
1.62 www 1323: }
1324: # ------------------------------------------------------------- Aboutme Wrapper
1325:
1326: sub aboutmewrapper {
1.69 matthew 1327: my ($link,$username,$domain)=@_;
1328: return "<a href='/adm/$domain/$username/aboutme'>$link</a>";
1.62 www 1329: }
1330:
1331: # ------------------------------------------------------------ Syllabus Wrapper
1332:
1333:
1334: sub syllabuswrapper {
1.73 www 1335: my ($link,$un,$do,$tf)=@_;
1336: if ($tf) { $link='<font color="'.$tf.'">'.$link.'</font>'; }
1.62 www 1337: return "<a href='/public/$do/$un/syllabus'>$link</a>";
1.61 www 1338: }
1.14 harris41 1339:
1340: # ---------------------------------------------------------------- Language IDs
1341: sub languageids {
1.16 harris41 1342: return sort(keys(%language));
1.14 harris41 1343: }
1344:
1345: # -------------------------------------------------------- Language Description
1346: sub languagedescription {
1.16 harris41 1347: return $language{shift(@_)};
1.14 harris41 1348: }
1349:
1350: # --------------------------------------------------------------- Copyright IDs
1351: sub copyrightids {
1.16 harris41 1352: return sort(keys(%cprtag));
1.14 harris41 1353: }
1354:
1355: # ------------------------------------------------------- Copyright Description
1356: sub copyrightdescription {
1.16 harris41 1357: return $cprtag{shift(@_)};
1.14 harris41 1358: }
1359:
1360: # ------------------------------------------------------------- File Categories
1361: sub filecategories {
1.41 ng 1362: return sort(keys(%category_extensions));
1.15 harris41 1363: }
1.14 harris41 1364:
1.17 harris41 1365: # -------------------------------------- File Types within a specified category
1.15 harris41 1366: sub filecategorytypes {
1.41 ng 1367: return @{$category_extensions{lc($_[0])}};
1.14 harris41 1368: }
1369:
1370: # ------------------------------------------------------------------ File Types
1371: sub fileextensions {
1.16 harris41 1372: return sort(keys(%fe));
1.14 harris41 1373: }
1374:
1375: # ------------------------------------------------------------- Embedding Style
1376: sub fileembstyle {
1.16 harris41 1377: return $fe{lc(shift(@_))};
1.14 harris41 1378: }
1379:
1380: # ------------------------------------------------------------ Description Text
1381: sub filedescription {
1.16 harris41 1382: return $fd{lc(shift(@_))};
1383: }
1384:
1385: # ------------------------------------------------------------ Description Text
1386: sub filedescriptionex {
1387: my $ex=shift;
1388: return '.'.$ex.' '.$fd{lc($ex)};
1.12 harris41 1389: }
1.1 albertel 1390:
1.40 ng 1391: # ---- Retrieve attempts by students
1392: # input
1393: # $symb - problem including path
1394: # $username,$domain - that of the student
1395: # $course - course name
1396: # $getattempt - leave blank if want all attempts, else put something.
1.43 ng 1397: # $regexp - regular expression. If string matches regexp send to
1398: # $gradesub - routine that process the string if it matches regexp
1.40 ng 1399: #
1400: # output
1401: # formatted as a table all the attempts, if any.
1402: #
1.1 albertel 1403: sub get_previous_attempt {
1.43 ng 1404: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
1.1 albertel 1405: my $prevattempts='';
1.43 ng 1406: no strict 'refs';
1.1 albertel 1407: if ($symb) {
1.3 albertel 1408: my (%returnhash)=
1409: &Apache::lonnet::restore($symb,$course,$domain,$username);
1.1 albertel 1410: if ($returnhash{'version'}) {
1411: my %lasthash=();
1412: my $version;
1413: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.19 harris41 1414: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
1.1 albertel 1415: $lasthash{$_}=$returnhash{$version.':'.$_};
1.19 harris41 1416: }
1.1 albertel 1417: }
1.43 ng 1418: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
1.40 ng 1419: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
1.16 harris41 1420: foreach (sort(keys %lasthash)) {
1.31 albertel 1421: my ($ign,@parts) = split(/\./,$_);
1.41 ng 1422: if ($#parts > 0) {
1.31 albertel 1423: my $data=$parts[-1];
1424: pop(@parts);
1.40 ng 1425: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
1.31 albertel 1426: } else {
1.41 ng 1427: if ($#parts == 0) {
1428: $prevattempts.='<th>'.$parts[0].'</th>';
1429: } else {
1430: $prevattempts.='<th>'.$ign.'</th>';
1431: }
1.31 albertel 1432: }
1.16 harris41 1433: }
1.40 ng 1434: if ($getattempt eq '') {
1435: for ($version=1;$version<=$returnhash{'version'};$version++) {
1436: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
1437: foreach (sort(keys %lasthash)) {
1438: my $value;
1439: if ($_ =~ /timestamp/) {
1440: $value=scalar(localtime($returnhash{$version.':'.$_}));
1441: } else {
1442: $value=$returnhash{$version.':'.$_};
1443: }
1444: $prevattempts.='<td>'.$value.' </td>';
1445: }
1446: }
1.1 albertel 1447: }
1.40 ng 1448: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
1.16 harris41 1449: foreach (sort(keys %lasthash)) {
1.5 albertel 1450: my $value;
1451: if ($_ =~ /timestamp/) {
1452: $value=scalar(localtime($lasthash{$_}));
1453: } else {
1454: $value=$lasthash{$_};
1455: }
1.49 ng 1456: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
1.40 ng 1457: $prevattempts.='<td>'.$value.' </td>';
1.16 harris41 1458: }
1.40 ng 1459: $prevattempts.='</tr></table></td></tr></table>';
1.1 albertel 1460: } else {
1461: $prevattempts='Nothing submitted - no attempts.';
1462: }
1463: } else {
1464: $prevattempts='No data.';
1465: }
1.10 albertel 1466: }
1467:
1468: sub get_student_view {
1.64 sakharuk 1469: my ($symb,$username,$domain,$courseid,$target) = @_;
1.10 albertel 1470: my ($map,$id,$feedurl) = split(/___/,$symb);
1471: my (%old,%moreenv);
1472: my @elements=('symb','courseid','domain','username');
1473: foreach my $element (@elements) {
1474: $old{$element}=$ENV{'form.grade_'.$element};
1475: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1476: }
1.64 sakharuk 1477: if ($target eq 'tex') {$moreenv{'form.grade_target'} = 'tex';}
1.11 albertel 1478: &Apache::lonnet::appenv(%moreenv);
1479: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl);
1480: &Apache::lonnet::delenv('form.grade_');
1481: foreach my $element (@elements) {
1482: $ENV{'form.grade_'.$element}=$old{$element};
1483: }
1484: $userview=~s/\<body[^\>]*\>//gi;
1485: $userview=~s/\<\/body\>//gi;
1486: $userview=~s/\<html\>//gi;
1487: $userview=~s/\<\/html\>//gi;
1488: $userview=~s/\<head\>//gi;
1489: $userview=~s/\<\/head\>//gi;
1490: $userview=~s/action\s*\=/would_be_action\=/gi;
1491: return $userview;
1492: }
1493:
1494: sub get_student_answers {
1495: my ($symb,$username,$domain,$courseid) = @_;
1496: my ($map,$id,$feedurl) = split(/___/,$symb);
1497: my (%old,%moreenv);
1498: my @elements=('symb','courseid','domain','username');
1499: foreach my $element (@elements) {
1500: $old{$element}=$ENV{'form.grade_'.$element};
1501: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1502: }
1503: $moreenv{'form.grade_target'}='answer';
1.10 albertel 1504: &Apache::lonnet::appenv(%moreenv);
1505: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl);
1506: &Apache::lonnet::delenv('form.grade_');
1507: foreach my $element (@elements) {
1508: $ENV{'form.grade_'.$element}=$old{$element};
1509: }
1510: return $userview;
1.1 albertel 1511: }
1.37 matthew 1512:
1513: ###############################################
1.51 www 1514:
1515:
1516: sub timehash {
1517: my @ltime=localtime(shift);
1518: return ( 'seconds' => $ltime[0],
1519: 'minutes' => $ltime[1],
1520: 'hours' => $ltime[2],
1521: 'day' => $ltime[3],
1522: 'month' => $ltime[4]+1,
1523: 'year' => $ltime[5]+1900,
1524: 'weekday' => $ltime[6],
1525: 'dayyear' => $ltime[7]+1,
1526: 'dlsav' => $ltime[8] );
1527: }
1528:
1529: sub maketime {
1530: my %th=@_;
1531: return POSIX::mktime(
1532: ($th{'seconds'},$th{'minutes'},$th{'hours'},
1533: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
1534: }
1535:
1.70 www 1536:
1537: #########################################
1538: #
1539: # Retro-fixing of un-backward-compatible time format
1540:
1541: sub unsqltime {
1542: my $timestamp=shift;
1543: if ($timestamp=~/^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/) {
1544: $timestamp=&maketime(
1545: 'year'=>$1,'month'=>$2,'day'=>$3,
1546: 'hours'=>$4,'minutes'=>$5,'seconds'=>$6);
1547: }
1548: return $timestamp;
1549: }
1550:
1551: #########################################
1.51 www 1552:
1553: sub findallcourses {
1554: my %courses=();
1555: my $now=time;
1556: foreach (keys %ENV) {
1557: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
1558: my ($starttime,$endtime)=$ENV{$_};
1559: my $active=1;
1560: if ($starttime) {
1561: if ($now<$starttime) { $active=0; }
1562: }
1563: if ($endtime) {
1564: if ($now>$endtime) { $active=0; }
1565: }
1566: if ($active) { $courses{$1.'_'.$2}=1; }
1567: }
1568: }
1569: return keys %courses;
1570: }
1.37 matthew 1571:
1.54 www 1572: ###############################################
1.60 matthew 1573: ###############################################
1574:
1575: =pod
1576:
1.63 www 1577: =item &determinedomain()
1.60 matthew 1578:
1579: Inputs: $domain (usually will be undef)
1580:
1.63 www 1581: Returns: Determines which domain should be used for designs
1.60 matthew 1582:
1583: =cut
1.54 www 1584:
1.60 matthew 1585: ###############################################
1.63 www 1586: sub determinedomain {
1587: my $domain=shift;
1588: if (! $domain) {
1.60 matthew 1589: # Determine domain if we have not been given one
1590: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
1591: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
1592: if ($ENV{'request.role.domain'}) {
1593: $domain=$ENV{'request.role.domain'};
1594: }
1595: }
1.63 www 1596: return $domain;
1597: }
1598: ###############################################
1599: =pod
1600:
1601: =item &domainlogo()
1602:
1603: Inputs: $domain (usually will be undef)
1604:
1605: Returns: A link to a domain logo, if the domain logo exists.
1606: If the domain logo does not exist, a description of the domain.
1607:
1608: =cut
1609: ###############################################
1610: sub domainlogo {
1611: my $domain = &determinedomain(shift);
1612: # See if there is a logo
1.59 www 1613: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
1.83 albertel 1614: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
1615: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1616: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
1617: '/adm/lonDomLogos/'.$domain.'.gif" />';
1.60 matthew 1618: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
1619: return $Apache::lonnet::domaindescription{$domain};
1.59 www 1620: } else {
1.60 matthew 1621: return '';
1.59 www 1622: }
1623: }
1.63 www 1624: ##############################################
1625:
1626: =pod
1627:
1628: =item &designparm()
1629:
1630: Inputs: $which parameter; $domain (usually will be undef)
1631:
1632: Returns: value of designparamter $which
1633:
1634: =cut
1635: ##############################################
1636: sub designparm {
1637: my ($which,$domain)=@_;
1638: $domain=&determinedomain($domain);
1639: if ($designhash{$domain.'.'.$which}) {
1640: return $designhash{$domain.'.'.$which};
1641: } else {
1642: return $designhash{'default.'.$which};
1643: }
1644: }
1.59 www 1645:
1.60 matthew 1646: ###############################################
1647: ###############################################
1648:
1649: =pod
1650:
1651: =item &bodytag()
1652:
1653: Returns a uniform header for LON-CAPA web pages.
1654:
1655: Inputs:
1656:
1657: $title, A title to be displayed on the page.
1658: $function, the current role (can be undef).
1659: $addentries, extra parameters for the <body> tag.
1660: $bodyonly, if defined, only return the <body> tag.
1661: $domain, if defined, force a given domain.
1.86 www 1662: $forcereg, if page should register as content page (relevant for
1663: text interface only)
1.60 matthew 1664:
1665: Returns: A uniform header for LON-CAPA web pages.
1666: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
1667: If $bodyonly is undef or zero, an html string containing a <body> tag and
1668: other decorations will be returned.
1669:
1670: =cut
1671:
1672: ###############################################
1.63 www 1673:
1674:
1.60 matthew 1675: ###############################################
1.54 www 1676: sub bodytag {
1.86 www 1677: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
1.55 www 1678: unless ($function) {
1679: $function='student';
1680: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
1681: $function='coordinator';
1682: }
1683: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
1684: $function='admin';
1685: }
1686: if (($ENV{'request.role'}=~/^(au|ca)/) ||
1687: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
1688: $function='author';
1689: }
1690: }
1.63 www 1691: my $img=&designparm($function.'.img',$domain);
1692: my $pgbg=&designparm($function.'.pgbg',$domain);
1693: my $tabbg=&designparm($function.'.tabbg',$domain);
1694: my $font=&designparm($function.'.font',$domain);
1695: my $link=&designparm($function.'.link',$domain);
1696: my $alink=&designparm($function.'.alink',$domain);
1697: my $vlink=&designparm($function.'.vlink',$domain);
1698: my $sidebg=&designparm($function.'.sidebg',$domain);
1699:
1700: # role and realm
1.55 www 1701: my ($role,$realm)
1702: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
1703: # realm
1.54 www 1704: if ($ENV{'request.course.id'}) {
1.55 www 1705: $realm=
1706: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.54 www 1707: }
1.55 www 1708: unless ($realm) { $realm=' '; }
1709: # Set messages
1.60 matthew 1710: my $messages=&domainlogo($domain);
1.55 www 1711: # Output
1.83 albertel 1712: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
1713: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1.60 matthew 1714: my $bodytag = <<END;
1.54 www 1715: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
1716: $addentries>
1.60 matthew 1717: END
1.94 ! www 1718: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
! 1719: $lonhttpdPort.$img.'" />';
1.60 matthew 1720: if ($bodyonly) {
1721: return $bodytag;
1.79 www 1722: } elsif ($ENV{'browser.interface'} eq 'textual') {
1.93 www 1723: #
1724: # Accessibility rendering
1725: #
1726: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
1727: $forcereg).
1728: '<h1>LON-CAPA: '.$title.'</h1>';
1729: } elsif ($ENV{'environment.remote'} eq 'off') {
1730: #
1731: # No-Remote rendering
1732: #
1.94 ! www 1733: $upperleft=&Apache::lonmenu::menubuttons($forcereg,'web',
! 1734: $forcereg);
! 1735: }
1.93 www 1736: #
1.94 ! www 1737: # Top frame rendering
1.93 www 1738: #
1.94 ! www 1739: return(<<ENDBODY);
1.60 matthew 1740: $bodytag
1.55 www 1741: <table width="100%" cellspacing="0" border="0" cellpadding="0">
1742: <tr><td bgcolor="$font">
1.94 ! www 1743: $upperleft</td>
1.63 www 1744: <td bgcolor="$font"><font color='$sidebg'>$messages</font></td>
1.55 www 1745: </tr>
1.54 www 1746: <tr>
1.55 www 1747: <td rowspan="3" bgcolor="$tabbg">
1748: <font size="5"><b>$title</b></font>
1.54 www 1749: <td bgcolor="$tabbg" align="right">
1750: <font size="2">
1751: $ENV{'environment.firstname'}
1752: $ENV{'environment.middlename'}
1753: $ENV{'environment.lastname'}
1754: $ENV{'environment.generation'}
1.55 www 1755: </font>
1.54 www 1756: </td>
1757: </tr>
1758: <tr><td bgcolor="$tabbg" align="right">
1.55 www 1759: <font size="2">$role</font>
1.54 www 1760: </td></tr>
1.55 www 1761: <tr>
1762: <td bgcolor="$tabbg" align="right"><font size="2">$realm</font> </td></tr>
1.54 www 1763: </table><br>
1764: ENDBODY
1765: }
1.37 matthew 1766: ###############################################
1.1 albertel 1767:
1.6 albertel 1768: sub get_unprocessed_cgi {
1.25 albertel 1769: my ($query,$possible_names)= @_;
1.26 matthew 1770: # $Apache::lonxml::debug=1;
1.16 harris41 1771: foreach (split(/&/,$query)) {
1.6 albertel 1772: my ($name, $value) = split(/=/,$_);
1.25 albertel 1773: $name = &Apache::lonnet::unescape($name);
1774: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
1775: $value =~ tr/+/ /;
1776: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1777: &Apache::lonxml::debug("Seting :$name: to :$value:");
1.30 albertel 1778: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
1.25 albertel 1779: }
1.16 harris41 1780: }
1.6 albertel 1781: }
1782:
1.7 albertel 1783: sub cacheheader {
1.23 www 1784: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.8 albertel 1785: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.7 albertel 1786: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
1787: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
1788: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
1789: return $output;
1790: }
1791:
1.9 albertel 1792: sub no_cache {
1793: my ($r) = @_;
1.23 www 1794: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.24 albertel 1795: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.9 albertel 1796: $r->no_cache(1);
1797: $r->header_out("Pragma" => "no-cache");
1.24 albertel 1798: #$r->header_out("Expires" => $date);
1.9 albertel 1799: }
1.25 albertel 1800:
1801: sub add_to_env {
1802: my ($name,$value)=@_;
1.28 albertel 1803: if (defined($ENV{$name})) {
1.27 albertel 1804: if (ref($ENV{$name})) {
1.25 albertel 1805: #already have multiple values
1806: push(@{ $ENV{$name} },$value);
1807: } else {
1808: #first time seeing multiple values, convert hash entry to an arrayref
1809: my $first=$ENV{$name};
1810: undef($ENV{$name});
1811: push(@{ $ENV{$name} },$first,$value);
1812: }
1813: } else {
1814: $ENV{$name}=$value;
1815: }
1.31 albertel 1816: }
1817:
1.41 ng 1818: =pod
1.45 matthew 1819:
1820: =back
1.41 ng 1821:
1822: =head2 CSV Upload/Handling functions
1.38 albertel 1823:
1.41 ng 1824: =over 4
1825:
1826: =item upfile_store($r)
1827:
1828: Store uploaded file, $r should be the HTTP Request object,
1829: needs $ENV{'form.upfile'}
1830: returns $datatoken to be put into hidden field
1831:
1832: =cut
1.31 albertel 1833:
1834: sub upfile_store {
1835: my $r=shift;
1836: $ENV{'form.upfile'}=~s/\r/\n/gs;
1837: $ENV{'form.upfile'}=~s/\f/\n/gs;
1838: $ENV{'form.upfile'}=~s/\n+/\n/gs;
1839: $ENV{'form.upfile'}=~s/\n+$//gs;
1840:
1841: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1842: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
1843: {
1844: my $fh=Apache::File->new('>'.$r->dir_config('lonDaemons').
1845: '/tmp/'.$datatoken.'.tmp');
1846: print $fh $ENV{'form.upfile'};
1847: }
1848: return $datatoken;
1849: }
1850:
1.56 matthew 1851: =pod
1852:
1.41 ng 1853: =item load_tmp_file($r)
1854:
1855: Load uploaded file from tmp, $r should be the HTTP Request object,
1856: needs $ENV{'form.datatoken'},
1857: sets $ENV{'form.upfile'} to the contents of the file
1858:
1859: =cut
1.31 albertel 1860:
1861: sub load_tmp_file {
1862: my $r=shift;
1863: my @studentdata=();
1864: {
1865: my $fh;
1866: if ($fh=Apache::File->new($r->dir_config('lonDaemons').
1867: '/tmp/'.$ENV{'form.datatoken'}.'.tmp')) {
1868: @studentdata=<$fh>;
1869: }
1870: }
1871: $ENV{'form.upfile'}=join('',@studentdata);
1872: }
1873:
1.56 matthew 1874: =pod
1875:
1.41 ng 1876: =item upfile_record_sep()
1877:
1878: Separate uploaded file into records
1879: returns array of records,
1880: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
1881:
1882: =cut
1.31 albertel 1883:
1884: sub upfile_record_sep {
1885: if ($ENV{'form.upfiletype'} eq 'xml') {
1886: } else {
1887: return split(/\n/,$ENV{'form.upfile'});
1888: }
1889: }
1890:
1.56 matthew 1891: =pod
1892:
1.41 ng 1893: =item record_sep($record)
1894:
1895: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
1896:
1897: =cut
1898:
1.31 albertel 1899: sub record_sep {
1900: my $record=shift;
1901: my %components=();
1902: if ($ENV{'form.upfiletype'} eq 'xml') {
1903: } elsif ($ENV{'form.upfiletype'} eq 'space') {
1904: my $i=0;
1905: foreach (split(/\s+/,$record)) {
1906: my $field=$_;
1907: $field=~s/^(\"|\')//;
1908: $field=~s/(\"|\')$//;
1909: $components{$i}=$field;
1910: $i++;
1911: }
1912: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
1913: my $i=0;
1914: foreach (split(/\t+/,$record)) {
1915: my $field=$_;
1916: $field=~s/^(\"|\')//;
1917: $field=~s/(\"|\')$//;
1918: $components{$i}=$field;
1919: $i++;
1920: }
1921: } else {
1922: my @allfields=split(/\,/,$record);
1923: my $i=0;
1924: my $j;
1925: for ($j=0;$j<=$#allfields;$j++) {
1926: my $field=$allfields[$j];
1927: if ($field=~/^\s*(\"|\')/) {
1928: my $delimiter=$1;
1929: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
1930: $j++;
1931: $field.=','.$allfields[$j];
1932: }
1933: $field=~s/^\s*$delimiter//;
1934: $field=~s/$delimiter\s*$//;
1935: }
1936: $components{$i}=$field;
1937: $i++;
1938: }
1939: }
1940: return %components;
1941: }
1942:
1.56 matthew 1943: =pod
1944:
1.41 ng 1945: =item upfile_select_html()
1946:
1947: return HTML code to select file and specify its type
1948:
1949: =cut
1950:
1.31 albertel 1951: sub upfile_select_html {
1952: return (<<'ENDUPFORM');
1.57 albertel 1953: <input type="file" name="upfile" size="50" />
1.31 albertel 1954: <br />Type: <select name="upfiletype">
1955: <option value="csv">CSV (comma separated values, spreadsheet)</option>
1956: <option value="space">Space separated</option>
1957: <option value="tab">Tabulator separated</option>
1958: <option value="xml">HTML/XML</option>
1959: </select>
1960: ENDUPFORM
1961: }
1962:
1.56 matthew 1963: =pod
1964:
1.41 ng 1965: =item csv_print_samples($r,$records)
1966:
1967: Prints a table of sample values from each column uploaded $r is an
1968: Apache Request ref, $records is an arrayref from
1969: &Apache::loncommon::upfile_record_sep
1970:
1971: =cut
1972:
1.31 albertel 1973: sub csv_print_samples {
1974: my ($r,$records) = @_;
1975: my (%sone,%stwo,%sthree);
1976: %sone=&record_sep($$records[0]);
1977: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
1978: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
1979:
1980: $r->print('Samples<br /><table border="2"><tr>');
1981: foreach (sort({$a <=> $b} keys(%sone))) { $r->print('<th>Column '.($_+1).'</th>'); }
1982: $r->print('</tr>');
1983: foreach my $hash (\%sone,\%stwo,\%sthree) {
1984: $r->print('<tr>');
1985: foreach (sort({$a <=> $b} keys(%sone))) {
1986: $r->print('<td>');
1987: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
1988: $r->print('</td>');
1989: }
1990: $r->print('</tr>');
1991: }
1992: $r->print('</tr></table><br />'."\n");
1993: }
1994:
1.56 matthew 1995: =pod
1996:
1.41 ng 1997: =item csv_print_select_table($r,$records,$d)
1998:
1999: Prints a table to create associations between values and table columns.
2000: $r is an Apache Request ref,
2001: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2002: $d is an array of 2 element arrays (internal name, displayed name)
2003:
2004: =cut
2005:
1.31 albertel 2006: sub csv_print_select_table {
2007: my ($r,$records,$d) = @_;
2008: my $i=0;my %sone;
2009: %sone=&record_sep($$records[0]);
2010: $r->print('Associate columns with student attributes.'."\n".
2011: '<table border="2"><tr><th>Attribute</th><th>Column</th></tr>'."\n");
2012: foreach (@$d) {
2013: my ($value,$display)=@{ $_ };
2014: $r->print('<tr><td>'.$display.'</td>');
2015:
2016: $r->print('<td><select name=f'.$i.
1.32 matthew 2017: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 2018: $r->print('<option value="none"></option>');
2019: foreach (sort({$a <=> $b} keys(%sone))) {
2020: $r->print('<option value="'.$_.'">Column '.($_+1).'</option>');
2021: }
2022: $r->print('</select></td></tr>'."\n");
2023: $i++;
2024: }
2025: $i--;
2026: return $i;
2027: }
1.56 matthew 2028:
2029: =pod
1.31 albertel 2030:
1.41 ng 2031: =item csv_samples_select_table($r,$records,$d)
2032:
2033: Prints a table of sample values from the upload and can make associate samples to internal names.
2034:
2035: $r is an Apache Request ref,
2036: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2037: $d is an array of 2 element arrays (internal name, displayed name)
2038:
2039: =cut
2040:
1.31 albertel 2041: sub csv_samples_select_table {
2042: my ($r,$records,$d) = @_;
2043: my %sone; my %stwo; my %sthree;
2044: my $i=0;
2045:
2046: $r->print('<table border=2><tr><th>Field</th><th>Samples</th></tr>');
2047: %sone=&record_sep($$records[0]);
2048: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2049: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2050:
2051: foreach (sort keys %sone) {
2052: $r->print('<tr><td><select name=f'.$i.
1.32 matthew 2053: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 2054: foreach (@$d) {
2055: my ($value,$display)=@{ $_ };
2056: $r->print('<option value='.$value.'>'.$display.'</option>');
2057: }
2058: $r->print('</select></td><td>');
2059: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
2060: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
2061: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
2062: $r->print('</td></tr>');
2063: $i++;
2064: }
2065: $i--;
2066: return($i);
1.25 albertel 2067: }
1.84 albertel 2068:
1.85 albertel 2069: =pod
2070:
2071: =item check_if_partid_hidden($id,$symb,$udom,$uname)
2072:
2073: Returns either 1 or undef
2074:
2075: 1 if the part is to be hidden, undef if it is to be shown
2076:
2077: Arguments are:
2078:
2079: $id the id of the part to be checked
2080: $symb, optional the symb of the resource to check
2081: $udom, optional the domain of the user to check for
2082: $uname, optional the username of the user to check for
2083:
2084: =cut
1.84 albertel 2085:
2086: sub check_if_partid_hidden {
2087: my ($id,$symb,$udom,$uname) = @_;
2088: my $hiddenparts=&Apache::lonnet::EXT('resource.0.parameter_hiddenparts',
2089: $symb,$udom,$uname);
2090: my @hiddenlist=split(/,/,$hiddenparts);
2091: foreach my $checkid (@hiddenlist) {
2092: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return 1; }
2093: }
2094: return undef;
2095: }
2096:
2097:
2098:
1.1 albertel 2099: 1;
2100: __END__;
1.17 harris41 2101:
1.41 ng 2102: =pod
2103:
2104: =back
2105:
2106: =head2 Access .tab File Data
2107:
2108: =over 4
2109:
1.35 matthew 2110: =item languageids()
1.17 harris41 2111:
1.35 matthew 2112: returns list of all language ids
1.17 harris41 2113:
1.35 matthew 2114: =item languagedescription()
1.17 harris41 2115:
1.35 matthew 2116: returns description of a specified language id
1.17 harris41 2117:
1.35 matthew 2118: =item copyrightids()
1.17 harris41 2119:
1.35 matthew 2120: returns list of all copyrights
1.17 harris41 2121:
1.35 matthew 2122: =item copyrightdescription()
1.17 harris41 2123:
1.35 matthew 2124: returns description of a specified copyright id
1.17 harris41 2125:
1.35 matthew 2126: =item filecategories()
1.17 harris41 2127:
1.35 matthew 2128: returns list of all file categories
1.17 harris41 2129:
1.35 matthew 2130: =item filecategorytypes()
1.17 harris41 2131:
1.35 matthew 2132: returns list of file types belonging to a given file
1.17 harris41 2133: category
2134:
1.35 matthew 2135: =item fileembstyle()
1.17 harris41 2136:
1.35 matthew 2137: returns embedding style for a specified file type
1.17 harris41 2138:
1.35 matthew 2139: =item filedescription()
1.17 harris41 2140:
1.35 matthew 2141: returns description for a specified file type
1.17 harris41 2142:
1.35 matthew 2143: =item filedescriptionex()
1.17 harris41 2144:
1.35 matthew 2145: returns description for a specified file type with
1.17 harris41 2146: extra formatting
2147:
1.41 ng 2148: =back
2149:
2150: =head2 Alternate Problem Views
2151:
2152: =over 4
2153:
1.35 matthew 2154: =item get_previous_attempt()
1.17 harris41 2155:
1.35 matthew 2156: return string with previous attempt on problem
1.17 harris41 2157:
1.35 matthew 2158: =item get_student_view()
1.17 harris41 2159:
1.35 matthew 2160: show a snapshot of what student was looking at
1.17 harris41 2161:
1.35 matthew 2162: =item get_student_answers()
1.17 harris41 2163:
1.35 matthew 2164: show a snapshot of how student was answering problem
1.17 harris41 2165:
1.41 ng 2166: =back
2167:
2168: =head2 HTTP Helper
2169:
2170: =over 4
2171:
2172: =item get_unprocessed_cgi($query,$possible_names)
2173:
2174: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2175: $query. The parameters listed in $possible_names (an array reference),
2176: will be set in $ENV{'form.name'} if they do not already exist.
1.17 harris41 2177:
1.41 ng 2178: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2179: $possible_names is an ref to an array of form element names. As an example:
2180: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2181: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
1.17 harris41 2182:
1.35 matthew 2183: =item cacheheader()
1.17 harris41 2184:
1.35 matthew 2185: returns cache-controlling header code
1.17 harris41 2186:
1.65 matthew 2187: =item no_cache($r)
1.17 harris41 2188:
1.35 matthew 2189: specifies header code to not have cache
1.25 albertel 2190:
1.35 matthew 2191: =item add_to_env($name,$value)
1.25 albertel 2192:
1.35 matthew 2193: adds $name to the %ENV hash with value
1.25 albertel 2194: $value, if $name already exists, the entry is converted to an array
2195: reference and $value is added to the array.
1.17 harris41 2196:
2197: =back
2198:
2199: =cut
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