version 1.8, 2001/10/26 17:29:28
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version 1.26, 2002/03/06 20:24:44
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# The LearningOnline Network |
# The LearningOnline Network with CAPA |
# a pile of common routines |
# a pile of common routines |
# 2/13 Guy Albertelli |
# |
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# $Id$ |
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# |
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# Copyright Michigan State University Board of Trustees |
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# |
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# This file is part of the LearningOnline Network with CAPA (LON-CAPA). |
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# |
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# LON-CAPA is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# LON-CAPA is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with LON-CAPA; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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# /home/httpd/html/adm/gpl.txt |
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# |
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# http://www.lon-capa.org/ |
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# |
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# YEAR=2001 |
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# 2/13-12/7 Guy Albertelli |
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# 12/11,12/12,12/17 Scott Harrison |
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# 12/21 Gerd Kortemeyer |
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# 12/21 Scott Harrison |
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# 12/25,12/28 Gerd Kortemeyer |
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# YEAR=2002 |
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# 1/4 Gerd Kortemeyer |
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# Makes a table out of the previous attempts |
# Makes a table out of the previous attempts |
# Inputs result_from_symbread, user, domain, course_id |
# Inputs result_from_symbread, user, domain, course_id |
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# Reads in non-network-related .tab files |
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package Apache::loncommon; |
package Apache::loncommon; |
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use strict; |
use strict; |
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use Apache::lonnet(); |
use POSIX qw(strftime); |
use POSIX qw(strftime); |
use Apache::Constants qw(:common); |
use Apache::Constants qw(:common); |
use Apache::lonmsg(); |
use Apache::lonmsg(); |
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my $readit; |
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# ----------------------------------------------- Filetypes/Languages/Copyright |
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my %language; |
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my %cprtag; |
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my %fe; my %fd; |
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my %fc; |
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# -------------------------------------------------------------- Thesaurus data |
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my @therelated; |
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my @theword; |
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my @thecount; |
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my %theindex; |
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my $thetotalcount; |
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my $thefuzzy=2; |
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my $thethreshold=0.1/$thefuzzy; |
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my $theavecount; |
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# ----------------------------------------------------------------------- BEGIN |
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BEGIN { |
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unless ($readit) { |
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# ------------------------------------------------------------------- languages |
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{ |
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my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. |
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'/language.tab'); |
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if ($fh) { |
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while (<$fh>) { |
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next if /^\#/; |
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chomp; |
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my ($key,$val)=(split(/\s+/,$_,2)); |
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$language{$key}=$val; |
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} |
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} |
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} |
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# ------------------------------------------------------------------ copyrights |
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{ |
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my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonIncludes'}. |
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'/copyright.tab'); |
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if ($fh) { |
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while (<$fh>) { |
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next if /^\#/; |
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chomp; |
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my ($key,$val)=(split(/\s+/,$_,2)); |
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$cprtag{$key}=$val; |
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} |
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} |
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} |
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# ------------------------------------------------------------- file categories |
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{ |
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my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. |
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'/filecategories.tab'); |
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if ($fh) { |
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while (<$fh>) { |
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next if /^\#/; |
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chomp; |
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my ($key,$val)=(split(/\s+/,$_,2)); |
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push @{$fc{$key}},$val; |
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} |
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} |
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} |
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# ------------------------------------------------------------------ file types |
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{ |
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my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. |
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'/filetypes.tab'); |
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if ($fh) { |
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while (<$fh>) { |
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next if (/^\#/); |
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chomp; |
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my ($ending,$emb,$descr)=split(/\s+/,$_,3); |
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if ($descr ne '') { |
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$fe{$ending}=lc($emb); |
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$fd{$ending}=$descr; |
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} |
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} |
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} |
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} |
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# -------------------------------------------------------------- Thesaurus data |
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{ |
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my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}. |
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'/thesaurus.dat'); |
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if ($fh) { |
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while (<$fh>) { |
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my ($tword,$tindex,$tcount,$trelated)=split(/\@/,$_); |
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$theindex{$tword}=$tindex; |
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$theword[$tindex]=$tword; |
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$thecount[$tindex]=$tcount; |
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$thetotalcount+=$tcount; |
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$therelated[$tindex]=$trelated; |
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} |
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} |
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$theavecount=$thetotalcount/$#thecount; |
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} |
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&Apache::lonnet::logthis( |
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"<font color=yellow>INFO: Read file types and thesaurus</font>"); |
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$readit=1; |
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} |
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} |
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# ============================================================= END BEGIN BLOCK |
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# ---------------------------------------------------------- Is this a keyword? |
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sub keyword { |
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my $newword=shift; |
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$newword=~s/\W//g; |
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$newword=~tr/A-Z/a-z/; |
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my $tindex=$theindex{$newword}; |
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if ($tindex) { |
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if ($thecount[$tindex]>$theavecount) { |
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return 1; |
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} |
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} |
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return 0; |
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} |
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# -------------------------------------------------------- Return related words |
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sub related { |
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my $newword=shift; |
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$newword=~s/\W//g; |
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$newword=~tr/A-Z/a-z/; |
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my $tindex=$theindex{$newword}; |
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if ($tindex) { |
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my %found=(); |
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foreach (split(/\,/,$therelated[$tindex])) { |
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# - Related word found |
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my ($ridx,$rcount)=split(/\:/,$_); |
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# - Direct relation index |
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my $directrel=$rcount/$thecount[$tindex]; |
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if ($directrel>$thethreshold) { |
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foreach (split(/\,/,$therelated[$ridx])) { |
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my ($rridx,$rrcount)=split(/\:/,$_); |
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if ($rridx==$tindex) { |
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# - Determine reverse relation index |
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my $revrel=$rrcount/$thecount[$ridx]; |
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# - Calculate full index |
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$found{$ridx}=$directrel*$revrel; |
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if ($found{$ridx}>$thethreshold) { |
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foreach (split(/\,/,$therelated[$ridx])) { |
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my ($rrridx,$rrrcount)=split(/\:/,$_); |
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unless ($found{$rrridx}) { |
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my $revrevrel=$rrrcount/$thecount[$ridx]; |
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if ( |
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$directrel*$revrel*$revrevrel>$thethreshold |
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) { |
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$found{$rrridx}= |
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$directrel*$revrel*$revrevrel; |
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} |
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} |
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} |
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} |
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} |
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} |
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} |
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} |
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} |
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return (); |
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} |
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# ---------------------------------------------------------------- Language IDs |
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sub languageids { |
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return sort(keys(%language)); |
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} |
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# -------------------------------------------------------- Language Description |
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sub languagedescription { |
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return $language{shift(@_)}; |
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} |
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# --------------------------------------------------------------- Copyright IDs |
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sub copyrightids { |
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return sort(keys(%cprtag)); |
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} |
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# ------------------------------------------------------- Copyright Description |
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sub copyrightdescription { |
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return $cprtag{shift(@_)}; |
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} |
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# ------------------------------------------------------------- File Categories |
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sub filecategories { |
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return sort(keys(%fc)); |
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} |
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# -------------------------------------- File Types within a specified category |
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sub filecategorytypes { |
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return @{$fc{lc(shift(@_))}}; |
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} |
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# ------------------------------------------------------------------ File Types |
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sub fileextensions { |
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return sort(keys(%fe)); |
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} |
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# ------------------------------------------------------------- Embedding Style |
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sub fileembstyle { |
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return $fe{lc(shift(@_))}; |
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} |
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# ------------------------------------------------------------ Description Text |
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sub filedescription { |
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return $fd{lc(shift(@_))}; |
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} |
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# ------------------------------------------------------------ Description Text |
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sub filedescriptionex { |
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my $ex=shift; |
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return '.'.$ex.' '.$fd{lc($ex)}; |
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} |
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sub get_previous_attempt { |
sub get_previous_attempt { |
my ($symb,$username,$domain,$course)=@_; |
my ($symb,$username,$domain,$course)=@_; |
my $prevattempts=''; |
my $prevattempts=''; |
Line 22 sub get_previous_attempt {
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Line 267 sub get_previous_attempt {
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my %lasthash=(); |
my %lasthash=(); |
my $version; |
my $version; |
for ($version=1;$version<=$returnhash{'version'};$version++) { |
for ($version=1;$version<=$returnhash{'version'};$version++) { |
map { |
foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) { |
$lasthash{$_}=$returnhash{$version.':'.$_}; |
$lasthash{$_}=$returnhash{$version.':'.$_}; |
} sort(split(/\:/,$returnhash{$version.':keys'})); |
} |
} |
} |
$prevattempts='<table border=2></tr><th>History</th>'; |
$prevattempts='<table border=2></tr><th>History</th>'; |
map { |
foreach (sort(keys %lasthash)) { |
$prevattempts.='<th>'.$_.'</th>'; |
$prevattempts.='<th>'.$_.'</th>'; |
} sort(keys %lasthash); |
} |
for ($version=1;$version<=$returnhash{'version'};$version++) { |
for ($version=1;$version<=$returnhash{'version'};$version++) { |
$prevattempts.='</tr><tr><th>Attempt '.$version.'</th>'; |
$prevattempts.='</tr><tr><th>Attempt '.$version.'</th>'; |
map { |
foreach (sort(keys %lasthash)) { |
my $value; |
my $value; |
if ($_ =~ /timestamp/) { |
if ($_ =~ /timestamp/) { |
$value=scalar(localtime($returnhash{$version.':'.$_})); |
$value=scalar(localtime($returnhash{$version.':'.$_})); |
Line 40 sub get_previous_attempt {
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Line 285 sub get_previous_attempt {
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$value=$returnhash{$version.':'.$_}; |
$value=$returnhash{$version.':'.$_}; |
} |
} |
$prevattempts.='<td>'.$value.'</td>'; |
$prevattempts.='<td>'.$value.'</td>'; |
} sort(keys %lasthash); |
} |
} |
} |
$prevattempts.='</tr><tr><th>Current</th>'; |
$prevattempts.='</tr><tr><th>Current</th>'; |
map { |
foreach (sort(keys %lasthash)) { |
my $value; |
my $value; |
if ($_ =~ /timestamp/) { |
if ($_ =~ /timestamp/) { |
$value=scalar(localtime($lasthash{$_})); |
$value=scalar(localtime($lasthash{$_})); |
Line 51 sub get_previous_attempt {
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Line 296 sub get_previous_attempt {
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$value=$lasthash{$_}; |
$value=$lasthash{$_}; |
} |
} |
$prevattempts.='<td>'.$value.'</td>'; |
$prevattempts.='<td>'.$value.'</td>'; |
} sort(keys %lasthash); |
} |
$prevattempts.='</tr></table>'; |
$prevattempts.='</tr></table>'; |
} else { |
} else { |
$prevattempts='Nothing submitted - no attempts.'; |
$prevattempts='Nothing submitted - no attempts.'; |
Line 61 sub get_previous_attempt {
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Line 306 sub get_previous_attempt {
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} |
} |
} |
} |
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sub get_student_view { |
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my ($symb,$username,$domain,$courseid) = @_; |
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my ($map,$id,$feedurl) = split(/___/,$symb); |
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my (%old,%moreenv); |
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my @elements=('symb','courseid','domain','username'); |
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foreach my $element (@elements) { |
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$old{$element}=$ENV{'form.grade_'.$element}; |
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$moreenv{'form.grade_'.$element}=eval '$'.$element #' |
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} |
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&Apache::lonnet::appenv(%moreenv); |
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my $userview=&Apache::lonnet::ssi('/res/'.$feedurl); |
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&Apache::lonnet::delenv('form.grade_'); |
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foreach my $element (@elements) { |
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$ENV{'form.grade_'.$element}=$old{$element}; |
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} |
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$userview=~s/\<body[^\>]*\>//gi; |
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$userview=~s/\<\/body\>//gi; |
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$userview=~s/\<html\>//gi; |
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$userview=~s/\<\/html\>//gi; |
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$userview=~s/\<head\>//gi; |
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$userview=~s/\<\/head\>//gi; |
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$userview=~s/action\s*\=/would_be_action\=/gi; |
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return $userview; |
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} |
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sub get_student_answers { |
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my ($symb,$username,$domain,$courseid) = @_; |
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my ($map,$id,$feedurl) = split(/___/,$symb); |
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my (%old,%moreenv); |
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my @elements=('symb','courseid','domain','username'); |
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foreach my $element (@elements) { |
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$old{$element}=$ENV{'form.grade_'.$element}; |
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$moreenv{'form.grade_'.$element}=eval '$'.$element #' |
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} |
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$moreenv{'form.grade_target'}='answer'; |
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&Apache::lonnet::appenv(%moreenv); |
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my $userview=&Apache::lonnet::ssi('/res/'.$feedurl); |
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&Apache::lonnet::delenv('form.grade_'); |
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foreach my $element (@elements) { |
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$ENV{'form.grade_'.$element}=$old{$element}; |
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} |
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$userview=~s/\<body[^\>]*\>//gi; |
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$userview=~s/\<\/body\>//gi; |
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$userview=~s/\<html\>//gi; |
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$userview=~s/\<\/html\>//gi; |
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$userview=~s/\<head\>//gi; |
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$userview=~s/\<\/head\>//gi; |
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$userview=~s/action\s*\=/would_be_action\=/gi; |
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return $userview; |
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} |
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sub get_unprocessed_cgi { |
sub get_unprocessed_cgi { |
my ($query)= @_; |
my ($query,$possible_names)= @_; |
map { |
# $Apache::lonxml::debug=1; |
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foreach (split(/&/,$query)) { |
my ($name, $value) = split(/=/,$_); |
my ($name, $value) = split(/=/,$_); |
$value =~ tr/+/ /; |
$name = &Apache::lonnet::unescape($name); |
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) { |
if (!defined($ENV{'form.'.$name})) { $ENV{'form.'.$name}=$value; } |
$value =~ tr/+/ /; |
} (split(/&/,$query)); |
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
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&Apache::lonxml::debug("Seting :$name: to :$value:"); |
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&add_to_env('form.'.$name,$value); |
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} |
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} |
} |
} |
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sub cacheheader { |
sub cacheheader { |
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unless ($ENV{'request.method'} eq 'GET') { return ''; } |
my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime); |
my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime); |
my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" /> |
my $output .='<meta HTTP-EQUIV="Expires" CONTENT="'.$date.'" /> |
<meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" /> |
<meta HTTP-EQUIV="Cache-control" CONTENT="no-cache" /> |
Line 79 sub cacheheader {
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Line 381 sub cacheheader {
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return $output; |
return $output; |
} |
} |
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sub no_cache { |
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my ($r) = @_; |
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unless ($ENV{'request.method'} eq 'GET') { return ''; } |
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#my $date=strftime("%a, %d %b %Y %H:%M:%S GMT",gmtime); |
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$r->no_cache(1); |
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$r->header_out("Pragma" => "no-cache"); |
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#$r->header_out("Expires" => $date); |
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} |
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sub add_to_env { |
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my ($name,$value)=@_; |
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if ($ENV{$name}) { |
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if (defined(@{ $ENV{$name} })) { |
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#already have multiple values |
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push(@{ $ENV{$name} },$value); |
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} else { |
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#first time seeing multiple values, convert hash entry to an arrayref |
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my $first=$ENV{$name}; |
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undef($ENV{$name}); |
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push(@{ $ENV{$name} },$first,$value); |
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} |
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} else { |
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$ENV{$name}=$value; |
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} |
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} |
1; |
1; |
__END__; |
__END__; |
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=head1 NAME |
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Apache::loncommon - pile of common routines |
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=head1 SYNOPSIS |
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Referenced by other mod_perl Apache modules. |
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Invocation: |
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&Apache::loncommon::SUBROUTINENAME(ARGUMENTS); |
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=head1 INTRODUCTION |
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Common collection of used subroutines. This collection helps remove |
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redundancy from other modules and increase efficiency of memory usage. |
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Current things done: |
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Makes a table out of the previous homework attempts |
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Inputs result_from_symbread, user, domain, course_id |
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Reads in non-network-related .tab files |
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This is part of the LearningOnline Network with CAPA project |
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described at http://www.lon-capa.org. |
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=head1 HANDLER SUBROUTINE |
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There is no handler subroutine. |
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=head1 OTHER SUBROUTINES |
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=over 4 |
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=item * |
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BEGIN() : initialize values from language.tab, copyright.tab, filetypes.tab, |
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and filecategories.tab. |
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=item * |
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languageids() : returns list of all language ids |
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=item * |
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languagedescription() : returns description of a specified language id |
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=item * |
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copyrightids() : returns list of all copyrights |
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=item * |
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copyrightdescription() : returns description of a specified copyright id |
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=item * |
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filecategories() : returns list of all file categories |
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=item * |
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filecategorytypes() : returns list of file types belonging to a given file |
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category |
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=item * |
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fileembstyle() : returns embedding style for a specified file type |
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=item * |
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filedescription() : returns description for a specified file type |
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=item * |
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filedescriptionex() : returns description for a specified file type with |
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extra formatting |
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=item * |
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get_previous_attempt() : return string with previous attempt on problem |
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=item * |
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get_student_view() : show a snapshot of what student was looking at |
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=item * |
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get_student_answers() : show a snapshot of how student was answering problem |
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=item * |
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get_unprocessed_cgi() : get unparsed CGI parameters |
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=item * |
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cacheheader() : returns cache-controlling header code |
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=item * |
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nocache() : specifies header code to not have cache |
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=item * |
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add_to_env($name,$value) : adds $name to the %ENV hash with value |
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$value, if $name already exists, the entry is converted to an array |
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reference and $value is added to the array. |
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=back |
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=cut |