version 1.2, 2000/08/02 15:27:10
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version 1.17, 2000/11/02 17:46:43
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# 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 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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# 9/2,9/4,9/29,9/30,10/2,10/11,10/30,10/31,11/1,11/2 Gerd Kortemeyer |
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package Apache::lonuserstate; |
package Apache::lonuserstate; |
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Line 20 use Apache::File;
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Line 21 use Apache::File;
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use HTML::TokeParser; |
use HTML::TokeParser; |
use Apache::lonnet(); |
use Apache::lonnet(); |
use GDBM_File; |
use GDBM_File; |
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use Apache::lonmsg; |
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use Safe; |
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use Opcode; |
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# ---------------------------------------------------- Globals for this package |
# ---------------------------------------------------- Globals for this package |
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Line 41 sub loadmap {
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Line 45 sub loadmap {
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my $fn='/home/httpd/html'.$uri; |
my $fn='/home/httpd/html'.$uri; |
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unless (($fn=~/\.course$/) || |
unless (($fn=~/\.sequence$/) || |
($fn=~/\.sequence$/) || |
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($fn=~/\.page$/)) { |
($fn=~/\.page$/)) { |
$errtext.="Invalid map: $fn\n"; |
$errtext.="Invalid map: $fn\n"; |
return OK; |
return OK; |
Line 116 sub loadmap {
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Line 119 sub loadmap {
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$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 175 sub loadmap {
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Line 177 sub loadmap {
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} |
} |
} |
} |
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# --------------------------------------------------------- Simplify expression |
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sub simplify { |
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my $expression=shift; |
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# (8)=8 |
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$expression=~s/\((\d+)\)/$1/g; |
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# 8&8=8 |
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$expression=~s/(\D)(\d+)\&\2(\D)/$1$2$3/g; |
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# 8|8=8 |
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$expression=~s/(\D)(\d+)\|\2(\D)/$1$2$3/g; |
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# (5&3)&4=5&3&4 |
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$expression=~s/\((\d+)((?:\&\d+)+)\)\&(\d+\D)/$1$2\&$3/g; |
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# (((5&3)|(4&6)))=((5&3)|(4&6)) |
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$expression=~ |
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s/\((\(\(\d+(?:\&\d+)*\)(?:\|\(\d+(?:\&\d+)*\))+\))\)/$1/g; |
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# ((5&3)|(4&6))|(1&2)=(5&3)|(4&6)|(1&2) |
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$expression=~ |
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s/\((\(\d+(?:\&\d+)*\))((?:\|\(\d+(?:\&\d+)*\))+)\)\|(\(\d+(?:\&\d+)*\))/\($1$2\|$3\)/g; |
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return $expression; |
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} |
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# -------------------------------------------------------- Build condition hash |
# -------------------------------------------------------- Build condition hash |
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sub traceroute { |
sub traceroute { |
my ($sofar,$rid,$beenhere)=shift; |
my ($sofar,$rid,$beenhere)=@_; |
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$sofar=simplify($sofar); |
unless ($beenhere=~/\&$rid\&/) { |
unless ($beenhere=~/\&$rid\&/) { |
$beenhere.=$rid.'&'; |
$beenhere.=$rid.'&'; |
if (defined($hash{'conditions_'.$rid})) { |
if (defined($hash{'conditions_'.$rid})) { |
$hash{'conditions_'.$rid}= |
$hash{'conditions_'.$rid}=simplify( |
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')'; |
'('.$hash{'conditions_'.$rid}.')|('.$sofar.')'); |
} else { |
} else { |
$hash{'conditions_'.$rid}=$sofar; |
$hash{'conditions_'.$rid}=$sofar; |
} |
} |
if (defined($hash{'is_map_'.$rid})) { |
if (defined($hash{'is_map_'.$rid})) { |
if () { |
if (defined($hash{'map_start_'.$hash{'src_'.$rid}})) { |
&traceroute($sofar,$startrid,'&'); |
&traceroute($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},'&'); |
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if (defined($hash{'map_finish_'.$hash{'src_'.$rid}})) { |
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$sofar= |
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$hash{'conditions_'.$hash{'map_finish_'.$hash{'src_'.$rid}}}; |
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} |
} |
} |
} |
} |
if (defined($hash{'to_'.$rid})) { |
if (defined($hash{'to_'.$rid})) { |
Line 197 sub traceroute {
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Line 225 sub traceroute {
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my $further=$sofar; |
my $further=$sofar; |
if ($hash{'undercond_'.$_}) { |
if ($hash{'undercond_'.$_}) { |
if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) { |
if (defined($hash{'condid_'.$hash{'undercond_'.$_}})) { |
$further.='&'.$hash{'condid_'.$hash{'undercond_'.$_}}; |
$further=simplify('('.$further.')&('. |
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$hash{'condid_'.$hash{'undercond_'.$_}}.')'); |
} else { |
} else { |
$errtext.='Undefined condition ID: ' |
$errtext.='Undefined condition ID: ' |
.$hash{'undercond_'.$_}.'. '; |
.$hash{'undercond_'.$_}.'. '; |
Line 209 sub traceroute {
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Line 238 sub traceroute {
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} |
} |
} |
} |
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# ------------------------------------------ Cascading conditions, quick access |
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sub accinit { |
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my ($uri,$short,$fn)=@_; |
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my %acchash=(); |
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my %captured=(); |
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my $condcounter=0; |
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$acchash{'acc.cond.'.$short.'.0'}=0; |
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map { |
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if ($_=~/^conditions/) { |
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my $expr=$hash{$_}; |
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map { |
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my $sub=$_; |
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my $orig=$_; |
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$sub=~/\(\((\d+\&(:?\d+\&)*)(?:\d+\&*)+\)(?:\|\(\1(?:\d+\&*)+\))+\)/; |
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my $factor=$1; |
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$sub=~s/$factor//g; |
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$sub=~s/^\(/\($factor\(/; |
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$sub.=')'; |
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$sub=simplify($sub); |
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$orig=~s/(\W)/\\$1/g; |
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$expr=~s/$orig/$sub/; |
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} ($expr=~m/(\(\(\d+(?:\&\d+)+\)(?:\|\(\d+(?:\&\d+)+\))+\))/g); |
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$hash{$_}=$expr; |
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unless (defined($captured{$expr})) { |
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$condcounter++; |
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$captured{$expr}=$condcounter; |
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$acchash{'acc.cond.'.$short.'.'.$condcounter}=$expr; |
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} |
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} |
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} keys %hash; |
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map { |
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if ($_=~/^ids/) { |
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map { |
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my $resid=$_; |
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my $uri=$hash{'src_'.$resid}; |
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my @uriparts=split(/\//,$uri); |
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my $urifile=$uriparts[$#uriparts]; |
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$#uriparts--; |
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my $uripath=join('/',@uriparts); |
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$uripath=~s/^\/res\///; |
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my $uricond='0'; |
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if (defined($hash{'conditions_'.$resid})) { |
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$uricond=$captured{$hash{'conditions_'.$resid}}; |
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} |
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if (defined($acchash{'acc.res.'.$short.'.'.$uripath})) { |
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if ($acchash{'acc.res.'.$short.'.'.$uripath}=~ |
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/(\&$urifile\:[^\&]*)/) { |
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my $replace=$1; |
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$acchash{'acc.res.'.$short.'.'.$uripath} |
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=~s/$replace/$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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} |
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} else { |
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$acchash{'acc.res.'.$short.'.'.$uripath}= |
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'&'.$urifile.':'.$uricond.'&'; |
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} |
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} split(/\,/,$hash{$_}); |
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} |
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} keys %hash; |
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my $courseuri=$uri; |
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$courseuri=~s/^\/res\///; |
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&Apache::lonnet::delenv('(acc\.|httpref\.)'); |
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&Apache::lonnet::appenv(%acchash, |
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"request.course.id" => $short, |
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"request.course.fn" => $fn, |
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"request.course.uri" => $courseuri); |
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} |
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# ---------------------------------------------------- Read map and all submaps |
# ---------------------------------------------------- Read map and all submaps |
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sub readmap { |
sub readmap { |
my $uri=shift; |
my $short=shift; |
@cond=(); |
$short=~s/^\///; |
%hash=(); |
my %cenv=&Apache::lonnet::coursedescription($short); |
$errtext=''; |
my $fn=$cenv{'fn'}; |
$pc=0; |
my $uri; |
loadmap($uri); |
$short=~s/\//\_/g; |
} |
unless ($uri=$cenv{'url'}) { |
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&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
# ---------------------------------------------------------------- Testing only |
"Could not load course $short.</font>"); |
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return 'No course data available.'; |
sub handler { |
} |
my $r = shift; |
@cond=('true:normal'); |
$r->content_type('text/html'); |
unlink($fn.'.db'); |
$r->send_http_header; |
unlink($fn.'_symb.db'); |
return OK if $r->header_only; |
unlink($fn.'.state'); |
readmap('/res/msu/korte/foo.course'); |
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_WRCREAT,0640)) { |
$r->print("<html><body>\n"); |
%hash=(); |
my $hashkey; |
$errtext=''; |
foreach $hashkey (sort keys %hash) { |
$pc=0; |
$r->print("$hashkey: $hash{$hashkey}<br>\n"); |
loadmap($uri); |
} |
if (defined($hash{'map_start_'.$uri})) { |
my $i; |
&traceroute('0',$hash{'map_start_'.$uri},'&'); |
$r->print('<hr>'); |
&accinit($uri,$short,$fn); |
for ($i=0;$i<=$#cond;$i++) { |
} |
$r->print($i.' : '.$cond[$i]."<br>\n"); |
unless (untie(%hash)) { |
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&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
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"Could not untie coursemap $fn for $uri.</font>"); |
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} |
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{ |
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my $cfh; |
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if ($cfh=Apache::File->new(">$fn.state")) { |
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print $cfh join("\n",@cond); |
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} else { |
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&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
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"Could not write statemap $fn for $uri.</font>"); |
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} |
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} |
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} else { |
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&Apache::lonnet::logthis("<font color=blue>WARNING: ". |
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"Could not tie coursemap $fn for $uri.</font>"); |
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} |
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&Apache::lonmsg::author_res_msg($ENV{'request.course.uri'},$errtext); |
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return $errtext; |
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} |
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# ------------------------------------------------------- Evaluate state string |
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sub evalstate { |
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my $safeeval = new Safe; |
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my $fn=$ENV{'request.course.fn'}.'.state'; |
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my $state='2'; |
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if (-e $fn) { |
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my @conditions=(); |
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{ |
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my $fh=Apache::File->new($fn); |
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@conditions=<$fh>; |
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} |
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$safeeval->permit("entereval"); |
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$safeeval->permit(":base_math"); |
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$safeeval->deny(":base_io"); |
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$safeeval->share_from('Apache::lonnet',['&EXT']); |
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map { |
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my $line=$_; |
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chomp($line); |
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my ($condition,$weight)=split(/\:/,$_); |
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if ($safeeval->reval($condition)) { |
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if ($weight eq 'force') { |
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$state.='3'; |
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} else { |
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$state.='2'; |
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} |
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} else { |
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if ($weight eq 'stop') { |
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$state.='0'; |
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} else { |
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$state.='1'; |
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} |
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} |
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} @conditions; |
} |
} |
$r->print("<h1>$errtext</h1></body></html>\n"); |
&Apache::lonnet::appenv('user.state.'.$ENV{'request.course.id'} => $state); |
return OK; |
return $state; |
} |
} |
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1; |
1; |
__END__ |
__END__ |
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