version 1.5, 2000/08/23 13:02:58
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version 1.56, 2003/03/17 18:07:09
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# Construct and maintain state and binary representation of course for user |
# Construct and maintain state and binary representation of course for user |
# |
# |
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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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# |
# (Server for RAT Maps |
# (Server for RAT Maps |
# |
# |
# (Edit Handler for RAT Maps |
# (Edit Handler for RAT Maps |
# (TeX Content Handler |
# (TeX Content Handler |
# |
# |
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# YEAR=2000 |
# 05/29/00,05/30 Gerd Kortemeyer) |
# 05/29/00,05/30 Gerd Kortemeyer) |
# 7/1 Gerd Kortemeyer) |
# 7/1 Gerd Kortemeyer) |
# 7/1,7/3,7/4,7/7,7/8,7/10 Gerd Kortemeyer) |
# 7/1,7/3,7/4,7/7,7/8,7/10 Gerd Kortemeyer) |
# |
# |
# 7/15,7/17,7/18,8/1,8/2,8/4,8/5,8/21,8/22,8/23 Gerd Kortemeyer |
# 7/15,7/17,7/18,8/1,8/2,8/4,8/5,8/21,8/22,8/23,8/30, |
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# 9/2,9/4,9/29,9/30,10/2,10/11,10/30,10/31, |
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# 11/1,11/2,11/14,11/16,11/22,12/28, |
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# YEAR=2001 |
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# 07/05/01,08/30,08/31 Gerd Kortemeyer |
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# |
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### |
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package Apache::lonuserstate; |
package Apache::lonuserstate; |
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# ------------------------------------------------- modules used by this module |
use strict; |
use strict; |
use Apache::Constants qw(:common :http); |
use Apache::Constants qw(:common :http); |
use Apache::File; |
use Apache::File; |
use HTML::TokeParser; |
use HTML::TokeParser; |
use Apache::lonnet(); |
use Apache::lonnet(); |
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use Apache::loncommon(); |
use GDBM_File; |
use GDBM_File; |
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use Apache::lonmsg; |
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use Safe; |
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use Safe::Hole; |
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use Opcode; |
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# ---------------------------------------------------- Globals for this package |
# ---------------------------------------------------- Globals for this package |
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my $pc; # Package counter |
my $pc; # Package counter |
my %hash; # The big tied hash |
my %hash; # The big tied hash |
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my %parmhash;# The hash with the parameters |
my @cond; # Array with all of the conditions |
my @cond; # Array with all of the conditions |
my $errtext; # variable with all errors |
my $errtext; # variable with all errors |
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my $retfurl; # variable with the very first URL in the course |
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my %randompick; # randomly picked resources |
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my %randompickseed; # optional seed for randomly picking resources |
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my %actualversion; # version of resource as loaded now |
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my %setversion; # forced version of resource |
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my %lastversion; # version when CC came in last |
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my $versionmode; # how versioning is handled in this course |
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# --------------------------------------------------------- Loads map from disk |
# --------------------------------------------------------- Loads map from disk |
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Line 39 sub loadmap {
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Line 84 sub loadmap {
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$hash{'map_pc_'.$uri}=$lpc; |
$hash{'map_pc_'.$uri}=$lpc; |
$hash{'map_id_'.$lpc}=$uri; |
$hash{'map_id_'.$lpc}=$uri; |
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my $fn='/home/httpd/html'.$uri; |
# Determine and check filename |
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my $fn=&Apache::lonnet::filelocation('',$uri); |
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unless (($fn=~/\.course$/) || |
my $ispage=($fn=~/\.page$/); |
($fn=~/\.sequence$/) || |
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unless (($fn=~/\.sequence$/) || |
($fn=~/\.page$/)) { |
($fn=~/\.page$/)) { |
$errtext.="Invalid map: $fn\n"; |
$errtext.="Invalid map: $fn\n"; |
return OK; |
return OK; |
} |
} |
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unless (-e $fn) { |
my $instr=&Apache::lonnet::getfile($fn); |
my $returned=Apache::lonnet::repcopy($fn); |
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unless ($returned eq OK) { |
unless ($instr == -1) { |
$errtext.="Could not import: $fn - "; |
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if ($returned eq HTTP_SERVICE_UNAVAILABLE) { |
# Successfully got file, parse it |
$errtext.="Server unavailable\n"; |
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} |
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if ($returned eq HTTP_NOT_FOUND) { |
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$errtext.="File not found\n"; |
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} |
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if ($returned eq FORBIDDEN) { |
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$errtext.="Access forbidden\n"; |
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} |
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return OK; |
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} |
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} |
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if (-e $fn) { |
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my @content; |
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{ |
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my $fh=Apache::File->new($fn); |
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@content=<$fh>; |
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} |
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my $instr=join('',@content); |
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my $parser = HTML::TokeParser->new(\$instr); |
my $parser = HTML::TokeParser->new(\$instr); |
my $token; |
my $token; |
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Line 91 sub loadmap {
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Line 120 sub loadmap {
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$hash{'kind_'.$rid}='res'; |
$hash{'kind_'.$rid}='res'; |
$hash{'title_'.$rid}=$token->[2]->{'title'}; |
$hash{'title_'.$rid}=$token->[2]->{'title'}; |
my $turi=$token->[2]->{'src'}; |
my $turi=$token->[2]->{'src'}; |
$hash{'src_'.$rid}=$turi; |
$Apache::lonnet::titlecache{ |
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&Apache::lonnet::symbclean( |
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&Apache::lonnet::declutter($uri).'___'. |
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$token->[2]->{'id'}.'___'. |
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&Apache::lonnet::declutter($turi))}= |
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$token->[2]->{'title'}; |
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unless ($ispage) { |
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$turi=~/\.(\w+)$/; |
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my $embstyle=&Apache::loncommon::fileembstyle($1); |
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if ($token->[2]->{'external'} eq 'true') { # external |
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$turi=~s/^http\:\/\//\/adm\/wrapper\/ext\//; |
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} elsif ($turi=~/^\/*uploaded\//) { # uploaded |
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if (($embstyle eq 'img') || ($embstyle eq 'emb') |
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|| ($embstyle eq 'ssi')) { |
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$turi='/adm/wrapper'.$turi; |
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} elsif ($turi!~/\.(sequence|page)$/) { |
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$turi='/adm/coursedocs/showdoc'.$turi; |
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} |
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} else { # normal internal resource |
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if (($embstyle eq 'img') || ($embstyle eq 'emb')) { |
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$turi='/adm/wrapper'.$turi; |
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} |
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} |
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} |
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if (defined($hash{'ids_'.$turi})) { |
if (defined($hash{'ids_'.$turi})) { |
$hash{'ids_'.$turi}.=','.$rid; |
$hash{'ids_'.$turi}.=','.$rid; |
} else { |
} else { |
$hash{'ids_'.$turi}=''.$rid; |
$hash{'ids_'.$turi}=''.$rid; |
} |
} |
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if |
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($turi=~/\/(syllabus|aboutme|navmaps|smppg|bulletinboard)$/) { |
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$turi.='?register=1'; |
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} |
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if ($token->[2]->{'src'}=~/\/\//) { |
$hash{'src_'.$rid}=$turi; |
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if ($token->[2]->{'external'} eq 'true') { |
$hash{'ext_'.$rid}='true:'; |
$hash{'ext_'.$rid}='true:'; |
} else { |
} else { |
$hash{'ext_'.$rid}='false:'; |
$hash{'ext_'.$rid}='false:'; |
Line 116 sub loadmap {
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Line 175 sub loadmap {
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$hash{'type_'.$rid}='normal'; |
$hash{'type_'.$rid}='normal'; |
} |
} |
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if (($turi=~/\.course$/) || |
if (($turi=~/\.sequence$/) || |
($turi=~/\.sequence$/) || |
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($turi=~/\.page$/)) { |
($turi=~/\.page$/)) { |
$hash{'is_map_'.$rid}=1; |
$hash{'is_map_'.$rid}=1; |
&loadmap($turi); |
&loadmap($turi); |
Line 165 sub loadmap {
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Line 223 sub loadmap {
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} else { |
} else { |
$hash{'from_'.$goesto}=''.$linkid; |
$hash{'from_'.$goesto}=''.$linkid; |
} |
} |
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} elsif ($token->[1] eq 'param') { |
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# ------------------------------------------------------------------- Parameter |
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my $referid=$lpc.'.'.$token->[2]->{'to'}; |
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my $part=$token->[2]->{'part'}; |
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unless ($part) { $part=0; } |
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my $newparam= |
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&Apache::lonnet::escape($token->[2]->{'type'}).':'. |
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&Apache::lonnet::escape($part.'.'. |
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$token->[2]->{'name'}).'='. |
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&Apache::lonnet::escape($token->[2]->{'value'}); |
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if (defined($hash{'param_'.$referid})) { |
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$hash{'param_'.$referid}.='&'.$newparam; |
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} else { |
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$hash{'param_'.$referid}=''.$newparam; |
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} |
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if ($token->[2]->{'name'} eq 'parameter_mapalias') { |
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$hash{'mapalias_'.$token->[2]->{'value'}}=$referid; |
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} |
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if ($token->[2]->{'name'} eq 'parameter_randompick') { |
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$randompick{$referid}=$token->[2]->{'value'}; |
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} |
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if ($token->[2]->{'name'} eq 'parameter_randompickseed') { |
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$randompick{$referid}=$token->[2]->{'value'}; |
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} |
} |
} |
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} |
} |
Line 179 sub loadmap {
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Line 262 sub loadmap {
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sub simplify { |
sub simplify { |
my $expression=shift; |
my $expression=shift; |
# "True and" is nothing |
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$expression=~s/0\&//g; |
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# (8)=8 |
# (8)=8 |
$expression=~s/\((\d+)\)/$1/g; |
$expression=~s/\((\d+)\)/$1/g; |
# 8&8=8 |
# 8&8=8 |
$expression=~s/(\d+)\&\1/$1/g; |
$expression=~s/(\D)(\d+)\&\2(\D)/$1$2$3/g; |
# 8|8=8 |
# 8|8=8 |
$expression=~s/(\d+)\|\1/$1/g; |
$expression=~s/(\D)(\d+)\|\2(\D)/$1$2$3/g; |
# (5&3)&4=5&3&4 |
# (5&3)&4=5&3&4 |
$expression=~s/\((\d+)\&(\d+)\)\&(\d+)/$1\&$2\&$3/g; |
$expression=~s/\((\d+)((?:\&\d+)+)\)\&(\d+\D)/$1$2\&$3/g; |
# (((5&3)|(4&6)))=((5&3)|(4&6)) |
# (((5&3)|(4&6)))=((5&3)|(4&6)) |
$expression=~ |
$expression=~ |
s/\((\(\(\d+(?:\&\d+)*\)(?:\|\(\d+(?:\&\d+)*\))+\))\)/$1/g; |
s/\((\(\(\d+(?:\&\d+)*\)(?:\|\(\d+(?:\&\d+)*\))+\))\)/$1/g; |
Line 205 sub traceroute {
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Line 286 sub traceroute {
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$sofar=simplify($sofar); |
$sofar=simplify($sofar); |
unless ($beenhere=~/\&$rid\&/) { |
unless ($beenhere=~/\&$rid\&/) { |
$beenhere.=$rid.'&'; |
$beenhere.=$rid.'&'; |
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if (($retfurl eq '') && ($hash{'src_'.$rid}) |
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&& ($hash{'src_'.$rid}!~/\.sequence$/)) { |
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my ($mapid,$resid)=split(/\./,$rid); |
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$retfurl=$hash{'src_'.$rid}. |
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(($hash{'src_'.$rid}=~/\?/)?'&':'?').'symb='. |
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&Apache::lonnet::symbclean( |
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&Apache::lonnet::declutter($hash{'map_id_'.$mapid}). |
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'___'.$resid.'___'. |
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&Apache::lonnet::declutter($hash{'src_'.$rid})); |
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} |
if (defined($hash{'conditions_'.$rid})) { |
if (defined($hash{'conditions_'.$rid})) { |
$hash{'conditions_'.$rid}=simplify( |
$hash{'conditions_'.$rid}=simplify( |
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')'); |
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')'); |
Line 221 sub traceroute {
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Line 312 sub traceroute {
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} |
} |
} |
} |
if (defined($hash{'to_'.$rid})) { |
if (defined($hash{'to_'.$rid})) { |
map { |
foreach (split(/\,/,$hash{'to_'.$rid})) { |
my $further=$sofar; |
my $further=$sofar; |
if ($hash{'undercond_'.$_}) { |
if ($hash{'undercond_'.$_}) { |
if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) { |
if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) { |
Line 233 sub traceroute {
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Line 324 sub traceroute {
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} |
} |
} |
} |
&traceroute($further,$hash{'goesto_'.$_},$beenhere); |
&traceroute($further,$hash{'goesto_'.$_},$beenhere); |
} split(/\,/,$hash{'to_'.$rid}); |
} |
} |
} |
} |
} |
} |
} |
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# ------------------------------------------ Cascading conditions, quick access |
# ------------------------------ Cascading conditions, quick access, parameters |
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sub accinit { |
sub accinit { |
my ($uri,$short,$fn)=@_; |
my ($uri,$short,$fn)=@_; |
Line 246 sub accinit {
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Line 337 sub accinit {
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my %captured=(); |
my %captured=(); |
my $condcounter=0; |
my $condcounter=0; |
$acchash{'acc.cond.'.$short.'.0'}=0; |
$acchash{'acc.cond.'.$short.'.0'}=0; |
map { |
foreach (keys %hash) { |
if ($_=~/^conditions/) { |
if ($_=~/^conditions/) { |
my $expr=$hash{$_}; |
my $expr=$hash{$_}; |
map { |
foreach ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g) { |
my $sub=$_; |
my $sub=$_; |
my $orig=$_; |
my $orig=$_; |
$sub=~/\(\((\d+(:?\&\d+)*)(?:\&\d+)+\)(?:\|\(\1(?:\&\d+)+\))+\)/; |
$sub=~/\(\((\d+\&(:?\d+\&)*)(?:\d+\&*)+\)(?:\|\(\1(?:\d+\&*)+\))+\)/; |
my $factor=$1; |
my $factor=$1; |
$sub=~s/$factor\&//g; |
$sub=~s/$factor//g; |
$sub=~s/^\(/\($factor\&\(/; |
$sub=~s/^\(/\($factor\(/; |
$sub.=')'; |
$sub.=')'; |
$sub=simplify($sub); |
$sub=simplify($sub); |
$orig=~s/(\W)/\\$1/g; |
$orig=~s/(\W)/\\$1/g; |
$expr=~s/$orig/$sub/; |
$expr=~s/$orig/$sub/; |
} ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g); |
} |
$hash{$_}=$expr; |
$hash{$_}=$expr; |
unless (defined($captured{$expr})) { |
unless (defined($captured{$expr})) { |
$condcounter++; |
$condcounter++; |
$captured{$expr}=$condcounter; |
$captured{$expr}=$condcounter; |
$acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr; |
$acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr; |
} |
} |
} |
} elsif ($_=~/^param_(\d+)\.(\d+)/) { |
} keys %hash; |
my $prefix=&Apache::lonnet::declutter($hash{'map_id_'.$1}). |
map { |
'___'.$2.'___'.&Apache::lonnet::declutter($hash{'src_'.$1.'.'.$2}); |
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foreach (split(/\&/,$hash{$_})) { |
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my ($typename,$value)=split(/\=/,$_); |
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my ($type,$name)=split(/\:/,$typename); |
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$parmhash{$prefix.'.'.&Apache::lonnet::unescape($name)}= |
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&Apache::lonnet::unescape($value); |
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$parmhash{$prefix.'.'.&Apache::lonnet::unescape($name).'.type'}= |
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&Apache::lonnet::unescape($type); |
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} |
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} |
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} |
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foreach (keys %hash) { |
if ($_=~/^ids/) { |
if ($_=~/^ids/) { |
my $resid=$hash{$_}; |
foreach (split(/\,/,$hash{$_})) { |
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my $resid=$_; |
my $uri=$hash{'src_'.$resid}; |
my $uri=$hash{'src_'.$resid}; |
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$uri=~s/^\/adm\/wrapper//; |
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$uri=&Apache::lonnet::declutter($uri); |
my @uriparts=split(/\//,$uri); |
my @uriparts=split(/\//,$uri); |
my $urifile=$uriparts[$#uriparts]; |
my $urifile=$uriparts[$#uriparts]; |
$#uriparts--; |
$#uriparts--; |
my $uripath=join('/',@uriparts); |
my $uripath=join('/',@uriparts); |
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if ($uripath) { |
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my $uricond='0'; |
if (defined($hash{'conditions_'.$resid})) { |
if (defined($hash{'conditions_'.$resid})) { |
$urifile.=':'.$captured{$hash{'conditions_'.$resid}}; |
$uricond=$captured{$hash{'conditions_'.$resid}}; |
} else { |
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$urifile.=':0'; |
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} |
} |
if (defined($acchash{'acc.res.'.$short.'.'.$uripath})) { |
if (defined($acchash{'acc.res.'.$short.'.'.$uripath})) { |
$acchash{'acc.res.'.$short.'.'.$uripath}.=$urifile.'&'; |
if ($acchash{'acc.res.'.$short.'.'.$uripath}=~ |
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/(\&\Q$urifile\E\:[^\&]*)/) { |
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my $replace=$1; |
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my $regexp=$replace; |
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$regexp=~s/\|/\\\|/g; |
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$acchash{'acc.res.'.$short.'.'.$uripath} |
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=~s/$regexp/$replace\|$uricond/; |
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} else { |
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$acchash{'acc.res.'.$short.'.'.$uripath}.= |
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$urifile.':'.$uricond.'&'; |
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} |
} else { |
} else { |
$acchash{'acc.res.'.$short.'.'.$uripath}='&'.$urifile.'&'; |
$acchash{'acc.res.'.$short.'.'.$uripath}= |
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'&'.$urifile.':'.$uricond.'&'; |
} |
} |
} |
} |
} keys %hash; |
} |
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} |
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} |
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$acchash{'acc.res.'.$short.'.'}='&:0&'; |
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my $courseuri=$uri; |
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$courseuri=~s/^\/res\///; |
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&Apache::lonnet::delenv('(acc\.|httpref\.)'); |
&Apache::lonnet::appenv(%acchash, |
&Apache::lonnet::appenv(%acchash, |
"request.course" => $short, |
"request.course.id" => $short, |
"request.course.fn" => $fn); |
"request.course.fn" => $fn, |
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"request.course.uri" => $courseuri); |
} |
} |
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# ---------------------------------------------------- Read map and all submaps |
# ------------------------------------- Selectively delete from randompick maps |
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# |
sub pickrandom { |
# Call with uri of course map, short name for course, and filename for |
my $randomoutentry=''; |
# binary structure |
foreach my $rid (keys %randompick) { |
# |
my $rndpick=$randompick{$rid}; |
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my $mpc=$hash{'map_pc_'.$hash{'src_'.$rid}}; |
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# ------------------------------------------- put existing resources into array |
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my @currentrids=(); |
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foreach (sort(keys(%hash))) { |
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if ($_=~/^src_($mpc\.\d+)/) { |
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if ($hash{'src_'.$1}) { push @currentrids, $1; } |
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} |
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} |
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# rids are number.number and we want to numercially sort on |
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# the second number |
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@currentrids=sort { |
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my (undef,$aid)=split(/\./,$a); |
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my (undef,$bid)=split(/\./,$b); |
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$aid <=> $bid; |
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} @currentrids; |
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next if ($#currentrids<$rndpick); |
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# -------------------------------- randomly eliminate the ones that should stay |
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my (undef,$id)=split(/\./,$rid); |
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if ($randompickseed{$rid}) { $id=$randompickseed{$rid}; } |
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my $rndseed=&Apache::lonnet::rndseed($id); # use id instead of symb |
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&Math::Random::random_set_seed_from_phrase($rndseed); |
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my @whichids=&Math::Random::random_permuted_index($#currentrids+1); |
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for (my $i=1;$i<=$rndpick;$i++) { $currentrids[$whichids[$i]]=''; } |
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#&Apache::lonnet::logthis("$id,$rndseed,".join(':',@whichids)); |
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# -------------------------------------------------------- delete the leftovers |
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for (my $k=0; $k<=$#currentrids; $k++) { |
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if ($currentrids[$k]) { |
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$hash{'randomout_'.$currentrids[$k]}=1; |
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my ($mapid,$resid)=split(/\./,$currentrids[$k]); |
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$randomoutentry.='&'. |
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&Apache::lonnet::symbclean( |
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&Apache::lonnet::declutter($hash{'map_id_'.$mapid}). |
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'___'.$resid.'___'. |
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&Apache::lonnet::declutter($hash{'src_'.$currentrids[$k]}) |
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).'&'; |
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} |
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} |
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} |
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if ($randomoutentry) { |
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&Apache::lonnet::appenv('acc.randomout' => $randomoutentry); |
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} |
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} |
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# ---------------------------------------------------- Read map and all submaps |
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sub readmap { |
sub readmap { |
my ($uri,$short,$fn)=@_; |
my $short=shift; |
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$short=~s/^\///; |
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my %cenv=&Apache::lonnet::coursedescription($short); |
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my $fn=$cenv{'fn'}; |
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my $uri; |
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$short=~s/\//\_/g; |
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unless ($uri=$cenv{'url'}) { |
|
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
|
"Could not load course $short.</font>"); |
|
return 'No course data available.'; |
|
} |
@cond=('true:normal'); |
@cond=('true:normal'); |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT,0640)) { |
unlink($fn.'.db'); |
|
unlink($fn.'_symb.db'); |
|
unlink($fn.'.state'); |
|
unlink($fn.'parms.db'); |
|
undef %randompick; |
|
$retfurl=''; |
|
if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT(),0640)) && |
|
(tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT(),0640))) { |
%hash=(); |
%hash=(); |
|
%parmhash=(); |
$errtext=''; |
$errtext=''; |
$pc=0; |
$pc=0; |
|
my $furi=&Apache::lonnet::clutter($uri); |
|
$hash{'src_0.0'}=$furi; |
|
$hash{'title_0.0'}=&Apache::lonnet::metadata($uri,'title'); |
|
$hash{'ids_'.$furi}='0.0'; |
|
$hash{'is_map_0.0'}=1; |
loadmap($uri); |
loadmap($uri); |
if (defined($hash{'map_start_'.$uri})) { |
if (defined($hash{'map_start_'.$uri})) { |
&traceroute('0',$hash{'map_start_'.$uri},'&'); |
&traceroute('0',$hash{'map_start_'.$uri},'&'); |
&accinit($uri,$short,$fn); |
&accinit($uri,$short,$fn); |
|
&pickrandom(); |
} |
} |
unless (untie(%hash)) { |
# ------------------------------------------------------------ Version tracking |
|
# if (&Apache::lonnet::allowed('srm',$ENV{'request.course.id'})) { |
|
# &Apache::lonnet::logthis('Will be version tracking'); |
|
# } |
|
unless ((untie(%hash)) && (untie(%parmhash))) { |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
"Could not untie coursemap $fn for $uri.</font>"); |
"Could not untie coursemap $fn for $uri.</font>"); |
} |
} |
Line 322 sub readmap {
|
Line 517 sub readmap {
|
if ($cfh=Apache::File->new(">$fn.state")) { |
if ($cfh=Apache::File->new(">$fn.state")) { |
print $cfh join("\n",@cond); |
print $cfh join("\n",@cond); |
} else { |
} else { |
&Apache::lonnet::logthis("<font color=blie>WARNING: ". |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
"Could not write statemap $fn for $uri.</font>"); |
"Could not write statemap $fn for $uri.</font>"); |
} |
} |
} |
} |
} else { |
} else { |
&Apache::lonnet::logthis("<font color=blie>WARNING: ". |
&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
"Could not tie coursemap $fn for $uri.</font>"); |
"Could not tie coursemap $fn for $uri.</font>"); |
} |
} |
return $errtext; |
&Apache::lonmsg::author_res_msg($ENV{'request.course.uri'},$errtext); |
|
# ------------------------------------------------- Check for critical messages |
|
|
|
my @what=&Apache::lonnet::dump('critical',$ENV{'user.domain'}, |
|
$ENV{'user.name'}); |
|
if ($what[0]) { |
|
if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) { |
|
$retfurl='/adm/email?critical=display'; |
|
} |
|
} |
|
return ($retfurl,$errtext); |
|
} |
|
|
|
# ------------------------------------------------------- Evaluate state string |
|
|
|
sub evalstate { |
|
|
|
my $fn=$ENV{'request.course.fn'}.'.state'; |
|
my $state='2'; |
|
if (-e $fn) { |
|
my @conditions=(); |
|
{ |
|
my $fh=Apache::File->new($fn); |
|
@conditions=<$fh>; |
|
} |
|
my $safeeval = new Safe; |
|
my $safehole = new Safe::Hole; |
|
$safeeval->permit("entereval"); |
|
$safeeval->permit(":base_math"); |
|
$safeeval->deny(":base_io"); |
|
$safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); |
|
foreach (@conditions) { |
|
my $line=$_; |
|
chomp($line); |
|
my ($condition,$weight)=split(/\:/,$_); |
|
if ($safeeval->reval($condition)) { |
|
if ($weight eq 'force') { |
|
$state.='3'; |
|
} else { |
|
$state.='2'; |
|
} |
|
} else { |
|
if ($weight eq 'stop') { |
|
$state.='0'; |
|
} else { |
|
$state.='1'; |
|
} |
|
} |
|
} |
|
} |
|
&Apache::lonnet::appenv('user.state.'.$ENV{'request.course.id'} => $state); |
|
return $state; |
} |
} |
|
|
1; |
1; |
__END__ |
__END__ |
|
|
|
=head1 NAME |
|
|
|
Apache::lonuserstate - Construct and maintain state and binary representation |
|
of course for user |
|
|
|
=head1 SYNOPSIS |
|
|
|
Invoked by lonroles.pm. |
|
|
|
&Apache::lonuserstate::readmap($cdom.'/'.$cnum); |
|
|
|
=head1 INTRODUCTION |
|
|
|
This module constructs and maintains state and binary representation |
|
of course for user. |
|
|
|
This is part of the LearningOnline Network with CAPA project |
|
described at http://www.lon-capa.org. |
|
|
|
=head1 HANDLER SUBROUTINE |
|
|
|
There is no handler subroutine. |
|
|
|
=head1 OTHER SUBROUTINES |
|
|
|
=over 4 |
|
|
|
=item * |
|
|
|
loadmap() : Loads map from disk |
|
|
|
=item * |
|
|
|
simplify() : Simplify expression |
|
|
|
=item * |
|
|
|
traceroute() : Build condition hash |
|
|
|
=item * |
|
|
|
accinit() : Cascading conditions, quick access, parameters |
|
|
|
=item * |
|
|
|
readmap() : Read map and all submaps |
|
|
|
=item * |
|
|
|
evalstate() : Evaluate state string |
|
|
|
=back |
|
|
|
=cut |