version 1.2, 2000/06/23 20:40:06
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version 1.11, 2000/07/18 21:27:10
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# The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
# Style Parser Module |
# XML Parser Module |
# |
# |
# last modified 06/23/00 by Alexander Sakharuk |
# last modified 06/26/00 by Alexander Sakharuk |
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package Apache::lonstyleparser; |
package Apache::lonxml; |
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use strict; |
use strict; |
use HTML::TokeParser; |
use HTML::TokeParser; |
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use Safe; |
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#============================================================= style subroutine |
sub register { |
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my $space; |
sub styleparser { |
my @taglist; |
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my $temptag; |
my ($target,$content_style_string) = @_; |
($space,@taglist) = @_; |
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foreach $temptag (@taglist) { |
#------------------------------------------- target redefinition (if necessary) |
$Apache::lonxml::alltags{$temptag}=$space; |
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} |
my @target_string = ''; |
} |
my $element; |
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use Apache::style; |
($element,@target_string) = split ('&&',$target); |
use Apache::lontexconvert; |
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use Apache::run; |
map {$content_style_string =~ s/\<(.*)$_\>/\<$1$element\>/g; } @target_string; |
use Apache::londefdef; |
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use Apache::scripttag; |
$target = $element; |
#================================================== Main subroutine: xmlparse |
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#-------------------------------------------- create a table for defined target |
sub xmlparse { |
#----------------------------------------- from the information from Style File |
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my ($target,$content_file_string,%style_for_target) = @_; |
my @value_style = (); |
my $pars = HTML::TokeParser->new(\$content_file_string); |
my $current_key = ''; |
my $currentstring = ''; |
my $current_value = ''; |
my $finaloutput = ''; |
my $stoken; |
my $newarg = ''; |
my $flag; |
my $safeeval = new Safe; |
my $iele; |
$safeeval->permit("entereval"); |
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#-------------------- Redefinition of the target in the case of compound target |
my $pstyle = HTML::TokeParser->new(\$content_style_string); |
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($target, my @tenta) = split('&&',$target); |
while ($stoken = $pstyle->get_token) { |
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#----------------------------------------------------- start for tag definition |
#------------------------- Stack definition (in stack we have all current tags) |
if ($stoken->[0] eq 'S' and $stoken->[1] eq 'definetag') { |
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#-------------------------------------------------------------- new key in hash |
my @stack = (); |
$current_key = $stoken->[2]{name}; |
my @parstack = (); |
$flag = 0; |
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#-------------------------------------------------------------- metadata output |
#------------------------------------- Parse input string (content_file_string) |
if ($target eq 'meta') { |
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while ($stoken = $pstyle->get_token and $stoken->[1] ne 'definetag') { |
my $token; |
if ($stoken->[0] eq 'S' and $stoken->[1] eq 'meta') { |
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while ($stoken = $pstyle->get_token and $stoken->[1] ne 'meta') { |
while ($token = $pars->get_token) { |
$current_value .= $stoken->[1]; |
if ($token->[0] eq 'T') { |
} |
$finaloutput .= &Apache::run::evaluate($token->[1],$safeeval,''); |
} |
} elsif ($token->[0] eq 'S') { |
} |
# add tag to stack |
} else { |
push (@stack,$token->[1]); |
#--------------------------------------------------------------- outtext output |
# add parameters list to another stack |
while ($stoken = $pstyle->get_token and $stoken->[1] ne 'outtext') { |
push (@parstack,&parstring($token)); |
if ($stoken->[1] eq 'definetag') { |
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$flag = 1; |
if (exists $style_for_target{$token->[1]}) { |
last; |
#basically recurse, but we never got more than one level down so just |
} |
#create the new context here |
} |
my @innerstack = (); |
if ($flag == 0) { |
my @innerparstack = (); |
while ($stoken = $pstyle->get_token and $stoken->[0] ne 'S') { |
# use style file definition |
$current_value .= $stoken->[1]; |
$newarg = $style_for_target{$token->[1]}; |
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my $pat = HTML::TokeParser->new(\$newarg); |
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my $tokenpat = ''; |
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my $partstring = ''; |
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while ($tokenpat = $pat->get_token) { |
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if ($tokenpat->[0] eq 'T') { |
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$partstring = $tokenpat->[1]; |
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} elsif ($tokenpat->[0] eq 'S') { |
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push (@innerstack,$tokenpat->[1]); |
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push (@innerparstack,&parstring($tokenpat)); |
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$partstring = &callsub("start_$tokenpat->[1]", |
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$target, $tokenpat, \@innerparstack, |
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$pat, $safeeval); |
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} elsif ($tokenpat->[0] eq 'E') { |
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#clear out any tags that didn't end |
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while ($tokenpat->[1] ne $innerstack[$#innerstack] |
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&& ($#innerstack > 0)) {pop @innerstack;pop @innerparstack;} |
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$partstring = &callsub("end_$tokenpat->[1]", |
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$target, $tokenpat, \@innerparstack, |
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$pat, $safeeval); |
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} |
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#pass both the variable to the style tag, and the tag we |
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#are processing inside the <definedtag> |
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$finaloutput .= &Apache::run::evaluate($partstring,$safeeval, |
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$parstack[$#parstack].$innerparstack[$#innerparstack]); |
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if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack; } |
} |
} |
while ($stoken->[1] ne 'definetag') { |
} else { |
if ($stoken->[0] eq 'S' and $stoken->[1] eq $target) { |
my $result = &callsub("start_$token->[1]", $target, $token,\@parstack, |
while ($stoken = $pstyle->get_token) { |
$pars, $safeeval); |
if ($stoken->[1] ne $target) { |
$finaloutput .= &Apache::run::evaluate($result,$safeeval, |
if ($stoken->[0] eq 'S') { |
$parstack[$#parstack]); |
my $flagelem = 0; |
} |
for (my $i=$#value_style-1;$i>0;$i=$i-2) { |
} elsif ($token->[0] eq 'E') { |
if ($stoken->[1] eq $value_style[$i]) { |
#clear out any tags that didn't end |
$flagelem = 1; |
while ($token->[1] ne $stack[$#stack] |
$iele = $i+1; |
&& ($#stack > 0)) {pop @stack;pop @parstack;} |
last; |
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} |
if (exists $style_for_target{'/'."$token->[1]"}) { |
} |
my @innerstack = (); |
if ($flagelem == 0) { |
my @innerparstack = (); |
$current_value .= $stoken->[4]; |
$newarg = $style_for_target{'/'."$token->[1]"}; |
} else { |
my $pat = HTML::TokeParser->new(\$newarg); |
$current_value .= $value_style[$iele]; |
my $tokenpat; |
} |
my $partstring = ''; |
} |
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if ($stoken->[0] eq 'E') { |
while ($tokenpat = $pat->get_token) { |
my $flagelem = 0; |
if ($tokenpat->[0] eq 'T') { |
for (my $i=$#value_style-1;$i>0;$i=$i-2) { |
$partstring .= $tokenpat->[1]; |
if ('/'.$stoken->[1] eq $value_style[$i]) { |
} elsif ($tokenpat->[0] eq 'S') { |
$flagelem = 1; |
push (@innerstack,$tokenpat->[1]); |
$iele = $i+1; |
push (@innerparstack,&parstring($tokenpat)); |
last; |
$partstring = &callsub("start_$tokenpat->[1]", |
} |
$target, $tokenpat, \@innerparstack, |
} |
$pat, $safeeval); |
if ($flagelem == 0) { |
} elsif ($tokenpat->[0] eq 'E') { |
$current_value .= $stoken->[2]; |
#clear out any tags that didn't end |
} else { |
while ($tokenpat->[1] ne $innerstack[$#innerstack] |
$current_value .= $value_style[$iele]; |
&& ($#innerstack > 0)) {pop @innerstack;pop @innerparstack;} |
} |
$partstring = &callsub("end_$tokenpat->[1]", |
} |
$target, $tokenpat, \@innerparstack, |
if ($stoken->[0] eq 'T') { |
$pat, $safeeval); |
$current_value .= $stoken->[1]; |
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} |
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} else { |
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last; |
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} |
} |
} |
#pass both the variable to the style tag, and the tag we |
} elsif ($stoken->[0] eq 'S' and $stoken->[1] ne $target) { |
#are processing inside the <definedtag> |
my $tempotempo = $stoken->[1]; |
$finaloutput .= &Apache::run::evaluate($partstring,$safeeval, |
while ($stoken = $pstyle->get_token and $stoken->[1] ne $tempotempo) { |
$parstack[$#parstack].$innerparstack[$#innerparstack]); |
} |
if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack; } |
} |
} |
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} else { |
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my $result = &callsub("end_$token->[1]", $target, $token, \@parstack, |
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$pars,$safeeval); |
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$finaloutput .= &Apache::run::evaluate($result,$safeeval, |
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$parstack[$#parstack]); |
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} |
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pop @stack; |
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pop @parstack; |
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} |
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} |
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return $finaloutput; |
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} |
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while ($stoken = $pstyle->get_token) { |
sub callsub { |
if ($stoken->[0] eq 'T') { |
my ($sub,$target,$token,$parstack,$parser,$safeeval)=@_; |
$current_value .= $stoken->[1]; |
my $currentstring=''; |
} |
{ |
if ($stoken->[0] eq 'E') { |
no strict 'refs'; |
last; |
if (my $space=$Apache::lonxml::alltags{$token->[1]}) { |
} |
#print "Calling sub $sub in $space \n"; |
if ($stoken->[0] eq 'S') { |
$sub="$space\:\:$sub"; |
last; |
$currentstring = &$sub($target,$token,\@$parstack,$parser,$safeeval); |
} |
} else { |
} |
print "NOT Calling sub $sub\n"; |
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if (defined($token->[4])) { |
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$currentstring = $token->[4]; |
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} else { |
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$currentstring = $token->[2]; |
} |
} |
} |
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} |
} |
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use strict 'refs'; |
} |
} |
$current_value =~ s/(\s)+/$1/g; |
return $currentstring; |
if ($current_value ne ' ' and $current_value ne '' ) { |
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push (@value_style,lc $current_key,$current_value); |
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} |
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$current_key = ''; |
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$current_value = ''; |
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} |
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my %style_for_target = @value_style; |
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#--------------------------------------------------------------- check printing |
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# while (($current_key,$current_value) = each %style_for_target) { |
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# print "$current_key => $current_value\n"; |
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# } |
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#---------------------------------------------------------------- return result |
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return %style_for_target; |
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} |
} |
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sub parstring { |
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my ($token) = @_; |
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my $temp=''; |
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map {$temp .= "my \$$_=\"$token->[2]->{$_}\";"} @{$token->[3]}; |
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return $temp; |
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} |
1; |
1; |
__END__ |
__END__ |
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