Annotation of loncom/interface/loncommon.pm, revision 1.99
1.10 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # a pile of common routines
1.10 albertel 3: #
1.99 ! www 4: # $Id: loncommon.pm,v 1.98 2003/05/04 21:20:17 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);
1.99 ! www 82: use Apache::Constants qw(:common :http :methods);
1.1 albertel 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;
1.98 www 154: my ($key,$two,$country,$three,$enc,$val)=(split(/\t/,$_));
155: $language{$key}=$val.' - '.$enc;
1.16 harris41 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(@_)};
1.97 www 1348: }
1349:
1350: # ----------------------------------------------------------- Display Languages
1351: # returns a hash with all desired display languages
1352: #
1353:
1354: sub display_languages {
1355: my %languages=();
1356: if ($ENV{'environment.languages'}) {
1357: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'environment.languages'})) {
1358: $languages{$_}=1;
1359: }
1360: }
1361: &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
1362: if ($ENV{'form.displaylanguage'}) {
1363: foreach (split(/\s*(\,|\;|\:)\s*/,$ENV{'form.displaylanguage'})) {
1364: $languages{$_}=1;
1365: }
1366: }
1367: return %languages;
1.14 harris41 1368: }
1369:
1370: # --------------------------------------------------------------- Copyright IDs
1371: sub copyrightids {
1.16 harris41 1372: return sort(keys(%cprtag));
1.14 harris41 1373: }
1374:
1375: # ------------------------------------------------------- Copyright Description
1376: sub copyrightdescription {
1.16 harris41 1377: return $cprtag{shift(@_)};
1.14 harris41 1378: }
1379:
1380: # ------------------------------------------------------------- File Categories
1381: sub filecategories {
1.41 ng 1382: return sort(keys(%category_extensions));
1.15 harris41 1383: }
1.14 harris41 1384:
1.17 harris41 1385: # -------------------------------------- File Types within a specified category
1.15 harris41 1386: sub filecategorytypes {
1.41 ng 1387: return @{$category_extensions{lc($_[0])}};
1.14 harris41 1388: }
1389:
1390: # ------------------------------------------------------------------ File Types
1391: sub fileextensions {
1.16 harris41 1392: return sort(keys(%fe));
1.14 harris41 1393: }
1394:
1395: # ------------------------------------------------------------- Embedding Style
1396: sub fileembstyle {
1.16 harris41 1397: return $fe{lc(shift(@_))};
1.14 harris41 1398: }
1399:
1400: # ------------------------------------------------------------ Description Text
1401: sub filedescription {
1.16 harris41 1402: return $fd{lc(shift(@_))};
1403: }
1404:
1405: # ------------------------------------------------------------ Description Text
1406: sub filedescriptionex {
1407: my $ex=shift;
1408: return '.'.$ex.' '.$fd{lc($ex)};
1.12 harris41 1409: }
1.1 albertel 1410:
1.40 ng 1411: # ---- Retrieve attempts by students
1412: # input
1413: # $symb - problem including path
1414: # $username,$domain - that of the student
1415: # $course - course name
1416: # $getattempt - leave blank if want all attempts, else put something.
1.43 ng 1417: # $regexp - regular expression. If string matches regexp send to
1418: # $gradesub - routine that process the string if it matches regexp
1.40 ng 1419: #
1420: # output
1421: # formatted as a table all the attempts, if any.
1422: #
1.1 albertel 1423: sub get_previous_attempt {
1.43 ng 1424: my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
1.1 albertel 1425: my $prevattempts='';
1.43 ng 1426: no strict 'refs';
1.1 albertel 1427: if ($symb) {
1.3 albertel 1428: my (%returnhash)=
1429: &Apache::lonnet::restore($symb,$course,$domain,$username);
1.1 albertel 1430: if ($returnhash{'version'}) {
1431: my %lasthash=();
1432: my $version;
1433: for ($version=1;$version<=$returnhash{'version'};$version++) {
1.19 harris41 1434: foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
1.1 albertel 1435: $lasthash{$_}=$returnhash{$version.':'.$_};
1.19 harris41 1436: }
1.1 albertel 1437: }
1.43 ng 1438: $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
1.40 ng 1439: $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
1.16 harris41 1440: foreach (sort(keys %lasthash)) {
1.31 albertel 1441: my ($ign,@parts) = split(/\./,$_);
1.41 ng 1442: if ($#parts > 0) {
1.31 albertel 1443: my $data=$parts[-1];
1444: pop(@parts);
1.40 ng 1445: $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.' </td>';
1.31 albertel 1446: } else {
1.41 ng 1447: if ($#parts == 0) {
1448: $prevattempts.='<th>'.$parts[0].'</th>';
1449: } else {
1450: $prevattempts.='<th>'.$ign.'</th>';
1451: }
1.31 albertel 1452: }
1.16 harris41 1453: }
1.40 ng 1454: if ($getattempt eq '') {
1455: for ($version=1;$version<=$returnhash{'version'};$version++) {
1456: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
1457: foreach (sort(keys %lasthash)) {
1458: my $value;
1459: if ($_ =~ /timestamp/) {
1460: $value=scalar(localtime($returnhash{$version.':'.$_}));
1461: } else {
1462: $value=$returnhash{$version.':'.$_};
1463: }
1464: $prevattempts.='<td>'.$value.' </td>';
1465: }
1466: }
1.1 albertel 1467: }
1.40 ng 1468: $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
1.16 harris41 1469: foreach (sort(keys %lasthash)) {
1.5 albertel 1470: my $value;
1471: if ($_ =~ /timestamp/) {
1472: $value=scalar(localtime($lasthash{$_}));
1473: } else {
1474: $value=$lasthash{$_};
1475: }
1.49 ng 1476: if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
1.40 ng 1477: $prevattempts.='<td>'.$value.' </td>';
1.16 harris41 1478: }
1.40 ng 1479: $prevattempts.='</tr></table></td></tr></table>';
1.1 albertel 1480: } else {
1481: $prevattempts='Nothing submitted - no attempts.';
1482: }
1483: } else {
1484: $prevattempts='No data.';
1485: }
1.10 albertel 1486: }
1487:
1488: sub get_student_view {
1.64 sakharuk 1489: my ($symb,$username,$domain,$courseid,$target) = @_;
1.10 albertel 1490: my ($map,$id,$feedurl) = split(/___/,$symb);
1491: my (%old,%moreenv);
1492: my @elements=('symb','courseid','domain','username');
1493: foreach my $element (@elements) {
1494: $old{$element}=$ENV{'form.grade_'.$element};
1495: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1496: }
1.64 sakharuk 1497: if ($target eq 'tex') {$moreenv{'form.grade_target'} = 'tex';}
1.11 albertel 1498: &Apache::lonnet::appenv(%moreenv);
1499: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl);
1500: &Apache::lonnet::delenv('form.grade_');
1501: foreach my $element (@elements) {
1502: $ENV{'form.grade_'.$element}=$old{$element};
1503: }
1504: $userview=~s/\<body[^\>]*\>//gi;
1505: $userview=~s/\<\/body\>//gi;
1506: $userview=~s/\<html\>//gi;
1507: $userview=~s/\<\/html\>//gi;
1508: $userview=~s/\<head\>//gi;
1509: $userview=~s/\<\/head\>//gi;
1510: $userview=~s/action\s*\=/would_be_action\=/gi;
1511: return $userview;
1512: }
1513:
1514: sub get_student_answers {
1515: my ($symb,$username,$domain,$courseid) = @_;
1516: my ($map,$id,$feedurl) = split(/___/,$symb);
1517: my (%old,%moreenv);
1518: my @elements=('symb','courseid','domain','username');
1519: foreach my $element (@elements) {
1520: $old{$element}=$ENV{'form.grade_'.$element};
1521: $moreenv{'form.grade_'.$element}=eval '$'.$element #'
1522: }
1523: $moreenv{'form.grade_target'}='answer';
1.10 albertel 1524: &Apache::lonnet::appenv(%moreenv);
1525: my $userview=&Apache::lonnet::ssi('/res/'.$feedurl);
1526: &Apache::lonnet::delenv('form.grade_');
1527: foreach my $element (@elements) {
1528: $ENV{'form.grade_'.$element}=$old{$element};
1529: }
1530: return $userview;
1.1 albertel 1531: }
1.37 matthew 1532:
1533: ###############################################
1.51 www 1534:
1535:
1536: sub timehash {
1537: my @ltime=localtime(shift);
1538: return ( 'seconds' => $ltime[0],
1539: 'minutes' => $ltime[1],
1540: 'hours' => $ltime[2],
1541: 'day' => $ltime[3],
1542: 'month' => $ltime[4]+1,
1543: 'year' => $ltime[5]+1900,
1544: 'weekday' => $ltime[6],
1545: 'dayyear' => $ltime[7]+1,
1546: 'dlsav' => $ltime[8] );
1547: }
1548:
1549: sub maketime {
1550: my %th=@_;
1551: return POSIX::mktime(
1552: ($th{'seconds'},$th{'minutes'},$th{'hours'},
1553: $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,$th{'dlsav'}));
1554: }
1555:
1.70 www 1556:
1557: #########################################
1558: #
1559: # Retro-fixing of un-backward-compatible time format
1560:
1561: sub unsqltime {
1562: my $timestamp=shift;
1563: if ($timestamp=~/^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/) {
1564: $timestamp=&maketime(
1565: 'year'=>$1,'month'=>$2,'day'=>$3,
1566: 'hours'=>$4,'minutes'=>$5,'seconds'=>$6);
1567: }
1568: return $timestamp;
1569: }
1570:
1571: #########################################
1.51 www 1572:
1573: sub findallcourses {
1574: my %courses=();
1575: my $now=time;
1576: foreach (keys %ENV) {
1577: if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
1578: my ($starttime,$endtime)=$ENV{$_};
1579: my $active=1;
1580: if ($starttime) {
1581: if ($now<$starttime) { $active=0; }
1582: }
1583: if ($endtime) {
1584: if ($now>$endtime) { $active=0; }
1585: }
1586: if ($active) { $courses{$1.'_'.$2}=1; }
1587: }
1588: }
1589: return keys %courses;
1590: }
1.37 matthew 1591:
1.54 www 1592: ###############################################
1.60 matthew 1593: ###############################################
1594:
1595: =pod
1596:
1.63 www 1597: =item &determinedomain()
1.60 matthew 1598:
1599: Inputs: $domain (usually will be undef)
1600:
1.63 www 1601: Returns: Determines which domain should be used for designs
1.60 matthew 1602:
1603: =cut
1.54 www 1604:
1.60 matthew 1605: ###############################################
1.63 www 1606: sub determinedomain {
1607: my $domain=shift;
1608: if (! $domain) {
1.60 matthew 1609: # Determine domain if we have not been given one
1610: $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
1611: if ($ENV{'user.domain'}) { $domain=$ENV{'user.domain'}; }
1612: if ($ENV{'request.role.domain'}) {
1613: $domain=$ENV{'request.role.domain'};
1614: }
1615: }
1.63 www 1616: return $domain;
1617: }
1618: ###############################################
1619: =pod
1620:
1621: =item &domainlogo()
1622:
1623: Inputs: $domain (usually will be undef)
1624:
1625: Returns: A link to a domain logo, if the domain logo exists.
1626: If the domain logo does not exist, a description of the domain.
1627:
1628: =cut
1629: ###############################################
1630: sub domainlogo {
1631: my $domain = &determinedomain(shift);
1632: # See if there is a logo
1.59 www 1633: if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
1.83 albertel 1634: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
1635: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1636: return '<img src="http://'.$ENV{'HTTP_HOST'}.':'.$lonhttpdPort.
1637: '/adm/lonDomLogos/'.$domain.'.gif" />';
1.60 matthew 1638: } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
1639: return $Apache::lonnet::domaindescription{$domain};
1.59 www 1640: } else {
1.60 matthew 1641: return '';
1.59 www 1642: }
1643: }
1.63 www 1644: ##############################################
1645:
1646: =pod
1647:
1648: =item &designparm()
1649:
1650: Inputs: $which parameter; $domain (usually will be undef)
1651:
1652: Returns: value of designparamter $which
1653:
1654: =cut
1655: ##############################################
1656: sub designparm {
1657: my ($which,$domain)=@_;
1.96 www 1658: if ($ENV{'environment.color.'.$which}) {
1659: return $ENV{'environment.color.'.$which};
1660: }
1.63 www 1661: $domain=&determinedomain($domain);
1662: if ($designhash{$domain.'.'.$which}) {
1663: return $designhash{$domain.'.'.$which};
1664: } else {
1665: return $designhash{'default.'.$which};
1666: }
1667: }
1.59 www 1668:
1.60 matthew 1669: ###############################################
1670: ###############################################
1671:
1672: =pod
1673:
1674: =item &bodytag()
1675:
1676: Returns a uniform header for LON-CAPA web pages.
1677:
1678: Inputs:
1679:
1680: $title, A title to be displayed on the page.
1681: $function, the current role (can be undef).
1682: $addentries, extra parameters for the <body> tag.
1683: $bodyonly, if defined, only return the <body> tag.
1684: $domain, if defined, force a given domain.
1.86 www 1685: $forcereg, if page should register as content page (relevant for
1686: text interface only)
1.60 matthew 1687:
1688: Returns: A uniform header for LON-CAPA web pages.
1689: If $bodyonly is nonzero, a string containing a <body> tag will be returned.
1690: If $bodyonly is undef or zero, an html string containing a <body> tag and
1691: other decorations will be returned.
1692:
1693: =cut
1694:
1695: ###############################################
1.63 www 1696:
1697:
1.60 matthew 1698: ###############################################
1.54 www 1699: sub bodytag {
1.86 www 1700: my ($title,$function,$addentries,$bodyonly,$domain,$forcereg)=@_;
1.55 www 1701: unless ($function) {
1702: $function='student';
1703: if ($ENV{'request.role'}=~/^(cc|in|ta|ep)/) {
1704: $function='coordinator';
1705: }
1706: if ($ENV{'request.role'}=~/^(su|dc|ad|li)/) {
1707: $function='admin';
1708: }
1709: if (($ENV{'request.role'}=~/^(au|ca)/) ||
1710: ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
1711: $function='author';
1712: }
1713: }
1.63 www 1714: my $img=&designparm($function.'.img',$domain);
1715: my $pgbg=&designparm($function.'.pgbg',$domain);
1716: my $tabbg=&designparm($function.'.tabbg',$domain);
1717: my $font=&designparm($function.'.font',$domain);
1718: my $link=&designparm($function.'.link',$domain);
1719: my $alink=&designparm($function.'.alink',$domain);
1720: my $vlink=&designparm($function.'.vlink',$domain);
1721: my $sidebg=&designparm($function.'.sidebg',$domain);
1722:
1723: # role and realm
1.55 www 1724: my ($role,$realm)
1725: =&Apache::lonnet::plaintext((split(/\./,$ENV{'request.role'}))[0]);
1726: # realm
1.54 www 1727: if ($ENV{'request.course.id'}) {
1.55 www 1728: $realm=
1729: $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.54 www 1730: }
1.55 www 1731: unless ($realm) { $realm=' '; }
1732: # Set messages
1.60 matthew 1733: my $messages=&domainlogo($domain);
1.55 www 1734: # Output
1.83 albertel 1735: my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
1736: if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
1.60 matthew 1737: my $bodytag = <<END;
1.54 www 1738: <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
1739: $addentries>
1.60 matthew 1740: END
1.94 www 1741: my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
1742: $lonhttpdPort.$img.'" />';
1.60 matthew 1743: if ($bodyonly) {
1744: return $bodytag;
1.79 www 1745: } elsif ($ENV{'browser.interface'} eq 'textual') {
1.95 www 1746: # Accessibility
1.93 www 1747: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
1748: $forcereg).
1749: '<h1>LON-CAPA: '.$title.'</h1>';
1750: } elsif ($ENV{'environment.remote'} eq 'off') {
1.95 www 1751: # No Remote
1752: return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
1753: $forcereg).
1754: '<table bgcolor="'.$pgbg.'" width="100%" border="0" cellspacing="3" cellpadding="3"><tr><td bgcolor="'.$tabbg.'"><font size="+3" color="'.$font.'"><b>'.$title.
1755: '</b></font></td></tr></table>';
1.94 www 1756: }
1.95 www 1757:
1.93 www 1758: #
1.95 www 1759: # Top frame rendering, Remote is up
1.93 www 1760: #
1.94 www 1761: return(<<ENDBODY);
1.60 matthew 1762: $bodytag
1.55 www 1763: <table width="100%" cellspacing="0" border="0" cellpadding="0">
1.95 www 1764: <tr><td bgcolor="$sidebg">
1.94 www 1765: $upperleft</td>
1.95 www 1766: <td bgcolor="$sidebg" align="right">$messages </td>
1.55 www 1767: </tr>
1.54 www 1768: <tr>
1.55 www 1769: <td rowspan="3" bgcolor="$tabbg">
1770: <font size="5"><b>$title</b></font>
1.54 www 1771: <td bgcolor="$tabbg" align="right">
1772: <font size="2">
1773: $ENV{'environment.firstname'}
1774: $ENV{'environment.middlename'}
1775: $ENV{'environment.lastname'}
1776: $ENV{'environment.generation'}
1.55 www 1777: </font>
1.54 www 1778: </td>
1779: </tr>
1780: <tr><td bgcolor="$tabbg" align="right">
1.55 www 1781: <font size="2">$role</font>
1.54 www 1782: </td></tr>
1.55 www 1783: <tr>
1784: <td bgcolor="$tabbg" align="right"><font size="2">$realm</font> </td></tr>
1.54 www 1785: </table><br>
1786: ENDBODY
1787: }
1.99 ! www 1788:
! 1789: ###############################################
! 1790:
! 1791: sub get_posted_cgi {
! 1792: my $r=shift;
! 1793:
! 1794: my $buffer;
! 1795:
! 1796: $r->read($buffer,$r->header_in('Content-length'),0);
! 1797: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
! 1798: my @pairs=split(/&/,$buffer);
! 1799: my $pair;
! 1800: foreach $pair (@pairs) {
! 1801: my ($name,$value) = split(/=/,$pair);
! 1802: $value =~ tr/+/ /;
! 1803: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
! 1804: $name =~ tr/+/ /;
! 1805: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
! 1806: &add_to_env("form.$name",$value);
! 1807: }
! 1808: } else {
! 1809: my $contentsep=$1;
! 1810: my @lines = split (/\n/,$buffer);
! 1811: my $name='';
! 1812: my $value='';
! 1813: my $fname='';
! 1814: my $fmime='';
! 1815: my $i;
! 1816: for ($i=0;$i<=$#lines;$i++) {
! 1817: if ($lines[$i]=~/^$contentsep/) {
! 1818: if ($name) {
! 1819: chomp($value);
! 1820: if ($fname) {
! 1821: $ENV{"form.$name.filename"}=$fname;
! 1822: $ENV{"form.$name.mimetype"}=$fmime;
! 1823: } else {
! 1824: $value=~s/\s+$//s;
! 1825: }
! 1826: &add_to_env("form.$name",$value);
! 1827: }
! 1828: if ($i<$#lines) {
! 1829: $i++;
! 1830: $lines[$i]=~
! 1831: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
! 1832: $name=$1;
! 1833: $value='';
! 1834: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
! 1835: $fname=$1;
! 1836: if
! 1837: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
! 1838: $fmime=$1;
! 1839: $i++;
! 1840: } else {
! 1841: $fmime='';
! 1842: }
! 1843: } else {
! 1844: $fname='';
! 1845: $fmime='';
! 1846: }
! 1847: $i++;
! 1848: }
! 1849: } else {
! 1850: $value.=$lines[$i]."\n";
! 1851: }
! 1852: }
! 1853: }
! 1854: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
! 1855: $r->method_number(M_GET);
! 1856: $r->method('GET');
! 1857: $r->headers_in->unset('Content-length');
! 1858: }
! 1859:
1.37 matthew 1860: ###############################################
1.1 albertel 1861:
1.6 albertel 1862: sub get_unprocessed_cgi {
1.25 albertel 1863: my ($query,$possible_names)= @_;
1.26 matthew 1864: # $Apache::lonxml::debug=1;
1.16 harris41 1865: foreach (split(/&/,$query)) {
1.6 albertel 1866: my ($name, $value) = split(/=/,$_);
1.25 albertel 1867: $name = &Apache::lonnet::unescape($name);
1868: if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
1869: $value =~ tr/+/ /;
1870: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1871: &Apache::lonxml::debug("Seting :$name: to :$value:");
1.30 albertel 1872: unless (defined($ENV{'form.'.$name})) { &add_to_env('form.'.$name,$value) };
1.25 albertel 1873: }
1.16 harris41 1874: }
1.6 albertel 1875: }
1876:
1.7 albertel 1877: sub cacheheader {
1.23 www 1878: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.8 albertel 1879: my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.7 albertel 1880: my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" />
1881: <meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" />
1882: <meta HTTP-EQUIV="Pragma" CONTENT="no-cache" />';
1883: return $output;
1884: }
1885:
1.9 albertel 1886: sub no_cache {
1887: my ($r) = @_;
1.23 www 1888: unless ($ENV{'request.method'} eq 'GET') { return ''; }
1.24 albertel 1889: #my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime);
1.9 albertel 1890: $r->no_cache(1);
1891: $r->header_out("Pragma" => "no-cache");
1.24 albertel 1892: #$r->header_out("Expires" => $date);
1.9 albertel 1893: }
1.25 albertel 1894:
1895: sub add_to_env {
1896: my ($name,$value)=@_;
1.28 albertel 1897: if (defined($ENV{$name})) {
1.27 albertel 1898: if (ref($ENV{$name})) {
1.25 albertel 1899: #already have multiple values
1900: push(@{ $ENV{$name} },$value);
1901: } else {
1902: #first time seeing multiple values, convert hash entry to an arrayref
1903: my $first=$ENV{$name};
1904: undef($ENV{$name});
1905: push(@{ $ENV{$name} },$first,$value);
1906: }
1907: } else {
1908: $ENV{$name}=$value;
1909: }
1.31 albertel 1910: }
1911:
1.41 ng 1912: =pod
1.45 matthew 1913:
1914: =back
1.41 ng 1915:
1916: =head2 CSV Upload/Handling functions
1.38 albertel 1917:
1.41 ng 1918: =over 4
1919:
1920: =item upfile_store($r)
1921:
1922: Store uploaded file, $r should be the HTTP Request object,
1923: needs $ENV{'form.upfile'}
1924: returns $datatoken to be put into hidden field
1925:
1926: =cut
1.31 albertel 1927:
1928: sub upfile_store {
1929: my $r=shift;
1930: $ENV{'form.upfile'}=~s/\r/\n/gs;
1931: $ENV{'form.upfile'}=~s/\f/\n/gs;
1932: $ENV{'form.upfile'}=~s/\n+/\n/gs;
1933: $ENV{'form.upfile'}=~s/\n+$//gs;
1934:
1935: my $datatoken=$ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1936: '_enroll_'.$ENV{'request.course.id'}.'_'.time.'_'.$$;
1937: {
1938: my $fh=Apache::File->new('>'.$r->dir_config('lonDaemons').
1939: '/tmp/'.$datatoken.'.tmp');
1940: print $fh $ENV{'form.upfile'};
1941: }
1942: return $datatoken;
1943: }
1944:
1.56 matthew 1945: =pod
1946:
1.41 ng 1947: =item load_tmp_file($r)
1948:
1949: Load uploaded file from tmp, $r should be the HTTP Request object,
1950: needs $ENV{'form.datatoken'},
1951: sets $ENV{'form.upfile'} to the contents of the file
1952:
1953: =cut
1.31 albertel 1954:
1955: sub load_tmp_file {
1956: my $r=shift;
1957: my @studentdata=();
1958: {
1959: my $fh;
1960: if ($fh=Apache::File->new($r->dir_config('lonDaemons').
1961: '/tmp/'.$ENV{'form.datatoken'}.'.tmp')) {
1962: @studentdata=<$fh>;
1963: }
1964: }
1965: $ENV{'form.upfile'}=join('',@studentdata);
1966: }
1967:
1.56 matthew 1968: =pod
1969:
1.41 ng 1970: =item upfile_record_sep()
1971:
1972: Separate uploaded file into records
1973: returns array of records,
1974: needs $ENV{'form.upfile'} and $ENV{'form.upfiletype'}
1975:
1976: =cut
1.31 albertel 1977:
1978: sub upfile_record_sep {
1979: if ($ENV{'form.upfiletype'} eq 'xml') {
1980: } else {
1981: return split(/\n/,$ENV{'form.upfile'});
1982: }
1983: }
1984:
1.56 matthew 1985: =pod
1986:
1.41 ng 1987: =item record_sep($record)
1988:
1989: Separate a record into fields $record should be an item from the upfile_record_sep(), needs $ENV{'form.upfiletype'}
1990:
1991: =cut
1992:
1.31 albertel 1993: sub record_sep {
1994: my $record=shift;
1995: my %components=();
1996: if ($ENV{'form.upfiletype'} eq 'xml') {
1997: } elsif ($ENV{'form.upfiletype'} eq 'space') {
1998: my $i=0;
1999: foreach (split(/\s+/,$record)) {
2000: my $field=$_;
2001: $field=~s/^(\"|\')//;
2002: $field=~s/(\"|\')$//;
2003: $components{$i}=$field;
2004: $i++;
2005: }
2006: } elsif ($ENV{'form.upfiletype'} eq 'tab') {
2007: my $i=0;
2008: foreach (split(/\t+/,$record)) {
2009: my $field=$_;
2010: $field=~s/^(\"|\')//;
2011: $field=~s/(\"|\')$//;
2012: $components{$i}=$field;
2013: $i++;
2014: }
2015: } else {
2016: my @allfields=split(/\,/,$record);
2017: my $i=0;
2018: my $j;
2019: for ($j=0;$j<=$#allfields;$j++) {
2020: my $field=$allfields[$j];
2021: if ($field=~/^\s*(\"|\')/) {
2022: my $delimiter=$1;
2023: while (($field!~/$delimiter$/) && ($j<$#allfields)) {
2024: $j++;
2025: $field.=','.$allfields[$j];
2026: }
2027: $field=~s/^\s*$delimiter//;
2028: $field=~s/$delimiter\s*$//;
2029: }
2030: $components{$i}=$field;
2031: $i++;
2032: }
2033: }
2034: return %components;
2035: }
2036:
1.56 matthew 2037: =pod
2038:
1.41 ng 2039: =item upfile_select_html()
2040:
2041: return HTML code to select file and specify its type
2042:
2043: =cut
2044:
1.31 albertel 2045: sub upfile_select_html {
2046: return (<<'ENDUPFORM');
1.57 albertel 2047: <input type="file" name="upfile" size="50" />
1.31 albertel 2048: <br />Type: <select name="upfiletype">
2049: <option value="csv">CSV (comma separated values, spreadsheet)</option>
2050: <option value="space">Space separated</option>
2051: <option value="tab">Tabulator separated</option>
2052: <option value="xml">HTML/XML</option>
2053: </select>
2054: ENDUPFORM
2055: }
2056:
1.56 matthew 2057: =pod
2058:
1.41 ng 2059: =item csv_print_samples($r,$records)
2060:
2061: Prints a table of sample values from each column uploaded $r is an
2062: Apache Request ref, $records is an arrayref from
2063: &Apache::loncommon::upfile_record_sep
2064:
2065: =cut
2066:
1.31 albertel 2067: sub csv_print_samples {
2068: my ($r,$records) = @_;
2069: my (%sone,%stwo,%sthree);
2070: %sone=&record_sep($$records[0]);
2071: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2072: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2073:
2074: $r->print('Samples<br /><table border="2"><tr>');
2075: foreach (sort({$a <=> $b} keys(%sone))) { $r->print('<th>Column '.($_+1).'</th>'); }
2076: $r->print('</tr>');
2077: foreach my $hash (\%sone,\%stwo,\%sthree) {
2078: $r->print('<tr>');
2079: foreach (sort({$a <=> $b} keys(%sone))) {
2080: $r->print('<td>');
2081: if (defined($$hash{$_})) { $r->print($$hash{$_}); }
2082: $r->print('</td>');
2083: }
2084: $r->print('</tr>');
2085: }
2086: $r->print('</tr></table><br />'."\n");
2087: }
2088:
1.56 matthew 2089: =pod
2090:
1.41 ng 2091: =item csv_print_select_table($r,$records,$d)
2092:
2093: Prints a table to create associations between values and table columns.
2094: $r is an Apache Request ref,
2095: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2096: $d is an array of 2 element arrays (internal name, displayed name)
2097:
2098: =cut
2099:
1.31 albertel 2100: sub csv_print_select_table {
2101: my ($r,$records,$d) = @_;
2102: my $i=0;my %sone;
2103: %sone=&record_sep($$records[0]);
2104: $r->print('Associate columns with student attributes.'."\n".
2105: '<table border="2"><tr><th>Attribute</th><th>Column</th></tr>'."\n");
2106: foreach (@$d) {
2107: my ($value,$display)=@{ $_ };
2108: $r->print('<tr><td>'.$display.'</td>');
2109:
2110: $r->print('<td><select name=f'.$i.
1.32 matthew 2111: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 2112: $r->print('<option value="none"></option>');
2113: foreach (sort({$a <=> $b} keys(%sone))) {
2114: $r->print('<option value="'.$_.'">Column '.($_+1).'</option>');
2115: }
2116: $r->print('</select></td></tr>'."\n");
2117: $i++;
2118: }
2119: $i--;
2120: return $i;
2121: }
1.56 matthew 2122:
2123: =pod
1.31 albertel 2124:
1.41 ng 2125: =item csv_samples_select_table($r,$records,$d)
2126:
2127: Prints a table of sample values from the upload and can make associate samples to internal names.
2128:
2129: $r is an Apache Request ref,
2130: $records is an arrayref from &Apache::loncommon::upfile_record_sep,
2131: $d is an array of 2 element arrays (internal name, displayed name)
2132:
2133: =cut
2134:
1.31 albertel 2135: sub csv_samples_select_table {
2136: my ($r,$records,$d) = @_;
2137: my %sone; my %stwo; my %sthree;
2138: my $i=0;
2139:
2140: $r->print('<table border=2><tr><th>Field</th><th>Samples</th></tr>');
2141: %sone=&record_sep($$records[0]);
2142: if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
2143: if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
2144:
2145: foreach (sort keys %sone) {
2146: $r->print('<tr><td><select name=f'.$i.
1.32 matthew 2147: ' onchange="javascript:flip(this.form,'.$i.');">');
1.31 albertel 2148: foreach (@$d) {
2149: my ($value,$display)=@{ $_ };
2150: $r->print('<option value='.$value.'>'.$display.'</option>');
2151: }
2152: $r->print('</select></td><td>');
2153: if (defined($sone{$_})) { $r->print($sone{$_}."</br>\n"); }
2154: if (defined($stwo{$_})) { $r->print($stwo{$_}."</br>\n"); }
2155: if (defined($sthree{$_})) { $r->print($sthree{$_}."</br>\n"); }
2156: $r->print('</td></tr>');
2157: $i++;
2158: }
2159: $i--;
2160: return($i);
1.25 albertel 2161: }
1.84 albertel 2162:
1.85 albertel 2163: =pod
2164:
2165: =item check_if_partid_hidden($id,$symb,$udom,$uname)
2166:
2167: Returns either 1 or undef
2168:
2169: 1 if the part is to be hidden, undef if it is to be shown
2170:
2171: Arguments are:
2172:
2173: $id the id of the part to be checked
2174: $symb, optional the symb of the resource to check
2175: $udom, optional the domain of the user to check for
2176: $uname, optional the username of the user to check for
2177:
2178: =cut
1.84 albertel 2179:
2180: sub check_if_partid_hidden {
2181: my ($id,$symb,$udom,$uname) = @_;
2182: my $hiddenparts=&Apache::lonnet::EXT('resource.0.parameter_hiddenparts',
2183: $symb,$udom,$uname);
2184: my @hiddenlist=split(/,/,$hiddenparts);
2185: foreach my $checkid (@hiddenlist) {
2186: if ($checkid =~ /^\s*\Q$id\E\s*$/) { return 1; }
2187: }
2188: return undef;
2189: }
2190:
2191:
2192:
1.1 albertel 2193: 1;
2194: __END__;
1.17 harris41 2195:
1.41 ng 2196: =pod
2197:
2198: =back
2199:
2200: =head2 Access .tab File Data
2201:
2202: =over 4
2203:
1.35 matthew 2204: =item languageids()
1.17 harris41 2205:
1.35 matthew 2206: returns list of all language ids
1.17 harris41 2207:
1.35 matthew 2208: =item languagedescription()
1.17 harris41 2209:
1.35 matthew 2210: returns description of a specified language id
1.17 harris41 2211:
1.35 matthew 2212: =item copyrightids()
1.17 harris41 2213:
1.35 matthew 2214: returns list of all copyrights
1.17 harris41 2215:
1.35 matthew 2216: =item copyrightdescription()
1.17 harris41 2217:
1.35 matthew 2218: returns description of a specified copyright id
1.17 harris41 2219:
1.35 matthew 2220: =item filecategories()
1.17 harris41 2221:
1.35 matthew 2222: returns list of all file categories
1.17 harris41 2223:
1.35 matthew 2224: =item filecategorytypes()
1.17 harris41 2225:
1.35 matthew 2226: returns list of file types belonging to a given file
1.17 harris41 2227: category
2228:
1.35 matthew 2229: =item fileembstyle()
1.17 harris41 2230:
1.35 matthew 2231: returns embedding style for a specified file type
1.17 harris41 2232:
1.35 matthew 2233: =item filedescription()
1.17 harris41 2234:
1.35 matthew 2235: returns description for a specified file type
1.17 harris41 2236:
1.35 matthew 2237: =item filedescriptionex()
1.17 harris41 2238:
1.35 matthew 2239: returns description for a specified file type with
1.17 harris41 2240: extra formatting
2241:
1.41 ng 2242: =back
2243:
2244: =head2 Alternate Problem Views
2245:
2246: =over 4
2247:
1.35 matthew 2248: =item get_previous_attempt()
1.17 harris41 2249:
1.35 matthew 2250: return string with previous attempt on problem
1.17 harris41 2251:
1.35 matthew 2252: =item get_student_view()
1.17 harris41 2253:
1.35 matthew 2254: show a snapshot of what student was looking at
1.17 harris41 2255:
1.35 matthew 2256: =item get_student_answers()
1.17 harris41 2257:
1.35 matthew 2258: show a snapshot of how student was answering problem
1.17 harris41 2259:
1.41 ng 2260: =back
2261:
2262: =head2 HTTP Helper
2263:
2264: =over 4
2265:
2266: =item get_unprocessed_cgi($query,$possible_names)
2267:
2268: Modify the %ENV hash to contain unprocessed CGI form parameters held in
2269: $query. The parameters listed in $possible_names (an array reference),
2270: will be set in $ENV{'form.name'} if they do not already exist.
1.17 harris41 2271:
1.41 ng 2272: Typically called with $ENV{'QUERY_STRING'} as the first parameter.
2273: $possible_names is an ref to an array of form element names. As an example:
2274: get_unprocessed_cgi($ENV{'QUERY_STRING'},['uname','udom']);
2275: will result in $ENV{'form.uname'} and $ENV{'form.udom'} being set.
1.17 harris41 2276:
1.35 matthew 2277: =item cacheheader()
1.17 harris41 2278:
1.35 matthew 2279: returns cache-controlling header code
1.17 harris41 2280:
1.65 matthew 2281: =item no_cache($r)
1.17 harris41 2282:
1.35 matthew 2283: specifies header code to not have cache
1.25 albertel 2284:
1.35 matthew 2285: =item add_to_env($name,$value)
1.25 albertel 2286:
1.35 matthew 2287: adds $name to the %ENV hash with value
1.25 albertel 2288: $value, if $name already exists, the entry is converted to an array
2289: reference and $value is added to the array.
1.17 harris41 2290:
2291: =back
2292:
2293: =cut
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