--- rat/lonuserstate.pm 2000/11/01 22:21:36 1.15 +++ rat/lonuserstate.pm 2002/06/05 12:52:05 1.27 @@ -1,37 +1,72 @@ # The LearningOnline Network with CAPA # Construct and maintain state and binary representation of course for user # +# $Id: lonuserstate.pm,v 1.27 2002/06/05 12:52:05 www Exp $ +# +# Copyright Michigan State University Board of Trustees +# +# This file is part of the LearningOnline Network with CAPA (LON-CAPA). +# +# LON-CAPA is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# LON-CAPA is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with LON-CAPA; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# +# /home/httpd/html/adm/gpl.txt +# +# http://www.lon-capa.org/ +# # (Server for RAT Maps # # (Edit Handler for RAT Maps # (TeX Content Handler # +# YEAR=2000 # 05/29/00,05/30 Gerd Kortemeyer) # 7/1 Gerd Kortemeyer) # 7/1,7/3,7/4,7/7,7/8,7/10 Gerd Kortemeyer) # # 7/15,7/17,7/18,8/1,8/2,8/4,8/5,8/21,8/22,8/23,8/30, -# 9/2,9/4,9/29,9/30,10/2,10/11,10/30,10/31,11/1 Gerd Kortemeyer +# 9/2,9/4,9/29,9/30,10/2,10/11,10/30,10/31, +# 11/1,11/2,11/14,11/16,11/22,12/28, +# YEAR=2001 +# 07/05/01,08/30,08/31 Gerd Kortemeyer +# 12/16 Scott Harrison +# +### package Apache::lonuserstate; +# ------------------------------------------------- modules used by this module use strict; use Apache::Constants qw(:common :http); use Apache::File; use HTML::TokeParser; use Apache::lonnet(); +use Apache::loncommon(); use GDBM_File; use Apache::lonmsg; use Safe; +use Safe::Hole; use Opcode; - # ---------------------------------------------------- Globals for this package my $pc; # Package counter my %hash; # The big tied hash +my %parmhash;# The hash with the parameters my @cond; # Array with all of the conditions my $errtext; # variable with all errors +my $retfurl; # variable with the very first URL in the course # --------------------------------------------------------- Loads map from disk @@ -52,6 +87,8 @@ sub loadmap { return OK; } + my $ispage=($fn=~/\.page$/); + unless (-e $fn) { my $returned=Apache::lonnet::repcopy($fn); unless ($returned eq OK) { @@ -95,6 +132,18 @@ sub loadmap { $hash{'kind_'.$rid}='res'; $hash{'title_'.$rid}=$token->[2]->{'title'}; my $turi=$token->[2]->{'src'}; + unless ($ispage) { + $turi=~/\.(\w+)$/; + my $embstyle=&Apache::loncommon::fileembstyle($1); + if ($token->[2]->{'external'} eq 'true') { + $turi=~s/^http\:\/\//\/adm\/wrapper\/ext\//; + } else { + my $embstyle=&Apache::loncommon::fileembstyle($1); + if (($embstyle eq 'img') || ($embstyle eq 'emb')) { + $turi='/adm/wrapper'.$turi; + } + } + } $hash{'src_'.$rid}=$turi; if (defined($hash{'ids_'.$turi})) { @@ -103,7 +152,7 @@ sub loadmap { $hash{'ids_'.$turi}=''.$rid; } - if ($token->[2]->{'src'}=~/\/\//) { + if ($token->[2]->{'external'} eq 'true') { $hash{'ext_'.$rid}='true:'; } else { $hash{'ext_'.$rid}='false:'; @@ -168,6 +217,23 @@ sub loadmap { } else { $hash{'from_'.$goesto}=''.$linkid; } + } elsif ($token->[1] eq 'param') { +# ------------------------------------------------------------------- Parameter + + my $referid=$lpc.'.'.$token->[2]->{'to'}; + my $part=$token->[2]->{'part'}; + unless ($part) { $part=0; } + my $newparam= + &Apache::lonnet::escape($token->[2]->{'type'}).':'. + &Apache::lonnet::escape($part.'.'. + $token->[2]->{'name'}).'='. + &Apache::lonnet::escape($token->[2]->{'value'}); + if (defined($hash{'param_'.$referid})) { + $hash{'param_'.$referid}.='&'.$newparam; + } else { + $hash{'param_'.$referid}=''.$newparam; + } + } } @@ -206,6 +272,9 @@ sub traceroute { $sofar=simplify($sofar); unless ($beenhere=~/\&$rid\&/) { $beenhere.=$rid.'&'; + if ($retfurl eq '') { + $retfurl=$hash{'src_'.$rid}; + } if (defined($hash{'conditions_'.$rid})) { $hash{'conditions_'.$rid}=simplify( '('.$hash{'conditions_'.$rid}.')|('.$sofar.')'); @@ -222,7 +291,7 @@ sub traceroute { } } if (defined($hash{'to_'.$rid})) { - map { + foreach (split(/\,/,$hash{'to_'.$rid})) { my $further=$sofar; if ($hash{'undercond_'.$_}) { if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) { @@ -234,12 +303,12 @@ sub traceroute { } } &traceroute($further,$hash{'goesto_'.$_},$beenhere); - } split(/\,/,$hash{'to_'.$rid}); + } } } } -# ------------------------------------------ Cascading conditions, quick access +# ------------------------------ Cascading conditions, quick access, parameters sub accinit { my ($uri,$short,$fn)=@_; @@ -247,10 +316,10 @@ sub accinit { my %captured=(); my $condcounter=0; $acchash{'acc.cond.'.$short.'.0'}=0; - map { + foreach (keys %hash) { if ($_=~/^conditions/) { my $expr=$hash{$_}; - map { + foreach ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g) { my $sub=$_; my $orig=$_; $sub=~/\(\((\d+\&(:?\d+\&)*)(?:\d+\&*)+\)(?:\|\(\1(?:\d+\&*)+\))+\)/; @@ -261,25 +330,38 @@ sub accinit { $sub=simplify($sub); $orig=~s/(\W)/\\$1/g; $expr=~s/$orig/$sub/; - } ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g); + } $hash{$_}=$expr; unless (defined($captured{$expr})) { $condcounter++; $captured{$expr}=$condcounter; $acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr; } - } - } keys %hash; - map { + } elsif ($_=~/^param_(\d+)\.(\d+)/) { + my $prefix=&Apache::lonnet::declutter($hash{'map_id_'.$1}). + '___'.$2.'___'.&Apache::lonnet::declutter($hash{'src_'.$1.'.'.$2}); + foreach (split(/\&/,$hash{$_})) { + my ($typename,$value)=split(/\=/,$_); + my ($type,$name)=split(/\:/,$typename); + $parmhash{$prefix.'.'.&Apache::lonnet::unescape($name)}= + &Apache::lonnet::unescape($value); + $parmhash{$prefix.'.'.&Apache::lonnet::unescape($name).'.type'}= + &Apache::lonnet::unescape($type); + } + } + } + foreach (keys %hash) { if ($_=~/^ids/) { - map { + foreach (split(/\,/,$hash{$_})) { my $resid=$_; my $uri=$hash{'src_'.$resid}; + $uri=~s/^\/adm\/wrapper//; my @uriparts=split(/\//,$uri); my $urifile=$uriparts[$#uriparts]; $#uriparts--; my $uripath=join('/',@uriparts); $uripath=~s/^\/res\///; + if ($uripath) { my $uricond='0'; if (defined($hash{'conditions_'.$resid})) { $uricond=$captured{$hash{'conditions_'.$resid}}; @@ -288,8 +370,10 @@ sub accinit { if ($acchash{'acc.res.'.$short.'.'.$uripath}=~ /(\&$urifile\:[^\&]*)/) { my $replace=$1; + my $regexp=$replace; + $regexp=~s/\|/\\\|/g; $acchash{'acc.res.'.$short.'.'.$uripath} - =~s/$replace/$replace\|$uricond/; + =~s/$regexp/$replace\|$uricond/; } else { $acchash{'acc.res.'.$short.'.'.$uripath}.= $urifile.':'.$uricond.'&'; @@ -297,10 +381,12 @@ sub accinit { } else { $acchash{'acc.res.'.$short.'.'.$uripath}= '&'.$urifile.':'.$uricond.'&'; - } - } split(/\,/,$hash{$_}); + } + } + } } - } keys %hash; + } + $acchash{'acc.res.'.$short.'.'}='&:0&'; my $courseuri=$uri; $courseuri=~s/^\/res\///; &Apache::lonnet::delenv('(acc\.|httpref\.)'); @@ -328,8 +414,12 @@ sub readmap { unlink($fn.'.db'); unlink($fn.'_symb.db'); unlink($fn.'.state'); - if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT,0640)) { + unlink($fn.'parms.db'); + $retfurl=''; + if ((tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT,0640)) && + (tie(%parmhash,'GDBM_File',$fn.'_parms.db',&GDBM_WRCREAT,0640))) { %hash=(); + %parmhash=(); $errtext=''; $pc=0; loadmap($uri); @@ -337,7 +427,7 @@ sub readmap { &traceroute('0',$hash{'map_start_'.$uri},'&'); &accinit($uri,$short,$fn); } - unless (untie(%hash)) { + unless ((untie(%hash)) && (untie(%parmhash))) { &Apache::lonnet::logthis("WARNING: ". "Could not untie coursemap $fn for $uri."); } @@ -355,14 +445,13 @@ sub readmap { "Could not tie coursemap $fn for $uri."); } &Apache::lonmsg::author_res_msg($ENV{'request.course.uri'},$errtext); - &evalstate(); - return $errtext; + return ($retfurl,$errtext); } # ------------------------------------------------------- Evaluate state string sub evalstate { - my $safeeval = new Safe; + my $fn=$ENV{'request.course.fn'}.'.state'; my $state='2'; if (-e $fn) { @@ -371,15 +460,16 @@ sub evalstate { 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"); - $safeeval->share_from('Apache::lonnet',['&varval']); - map { + $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT'); + foreach (@conditions) { my $line=$_; chomp($line); my ($condition,$weight)=split(/\:/,$_); - $condition=~s/\&([\w\.]+)/\&varval\(\'$1\'\)/g; if ($safeeval->reval($condition)) { if ($weight eq 'force') { $state.='3'; @@ -393,7 +483,7 @@ sub evalstate { $state.='1'; } } - } @conditions; + } } &Apache::lonnet::appenv('user.state.'.$ENV{'request.course.id'} => $state); return $state; @@ -402,9 +492,57 @@ sub evalstate { 1; __END__ +=head1 NAME + +Apache::lonuserstate - Construct and maintain state and binary representation +of course for user + +=head1 SYNOPSIS + +Invoked by lonroles.pm. + +&Apache::lonuserstate::readmap($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 500 Internal Server Error

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