version 1.2, 2000/06/23 20:40:06
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version 1.4, 2000/06/27 19:35:32
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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; |
#============================================================= style subroutine |
use Apache::style; |
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use Apache::lontexconvert; |
sub styleparser { |
use Apache::londefdef; |
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#================================================== Main subroutine: xmlparse |
my ($target,$content_style_string) = @_; |
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sub xmlparse { |
#------------------------------------------- target redefinition (if necessary) |
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my ($target,$content_file_string,%style_for_target) = @_; |
my @target_string = ''; |
my $pars = HTML::TokeParser->new(\$content_file_string); |
my $element; |
my $currentstring = ''; |
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my $finaloutput = ''; |
($element,@target_string) = split ('&&',$target); |
my $newarg = ''; |
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my $tempostring = ''; |
map {$content_style_string =~ s/\<(.*)$_\>/\<$1$element\>/g; } @target_string; |
my $tempocont = ''; |
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my $safeeval = new Safe; |
$target = $element; |
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#-------------------- Redefinition of the target in the case of compound target |
#-------------------------------------------- create a table for defined target |
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#----------------------------------------- from the information from Style File |
($target, my @tenta) = split('&&',$target); |
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my @value_style = (); |
#------------------------- Stack definition (in stack we have all current tags) |
my $current_key = ''; |
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my $current_value = ''; |
my @stack = (); |
my $stoken; |
my @parstack = (); |
my $flag; |
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my $iele; |
#------------------------------------- Parse input string (content_file_string) |
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my $pstyle = HTML::TokeParser->new(\$content_style_string); |
my $token; |
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while ($stoken = $pstyle->get_token) { |
while ($token = $pars->get_token) { |
#----------------------------------------------------- start for tag definition |
if ($token->[0] eq 'T') { |
if ($stoken->[0] eq 'S' and $stoken->[1] eq 'definetag') { |
$finaloutput .= $token->[1]; |
#-------------------------------------------------------------- new key in hash |
$tempocont .= $token->[1]; |
$current_key = $stoken->[2]{name}; |
} elsif ($token->[0] eq 'S') { |
$flag = 0; |
#------------------------------------------------------------- add tag to stack |
#-------------------------------------------------------------- metadata output |
push (@stack,$token->[1]); |
if ($target eq 'meta') { |
#----------------------------------------- add parameters list to another stack |
while ($stoken = $pstyle->get_token and $stoken->[1] ne 'definetag') { |
map {$tempostring .= "$_=$token->[2]->{$_},"} @{$token->[3]}; |
if ($stoken->[0] eq 'S' and $stoken->[1] eq 'meta') { |
push (@parstack,$tempostring); |
while ($stoken = $pstyle->get_token and $stoken->[1] ne 'meta') { |
$tempostring = ''; |
$current_value .= $stoken->[1]; |
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} |
if (exists $style_for_target{$token->[1]}) { |
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#---------------------------------------------------- use style file definition |
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$newarg = $style_for_target{$token->[1]}; |
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if (index($newarg,'script') != -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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my $oustring = ''; |
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my $outputstring; |
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while ($tokenpat = $pat->get_token) { |
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if ($tokenpat->[0] eq 'T') { |
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$oustring .= $tokenpat->[1]; |
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} elsif ($tokenpat->[0] eq 'S') { |
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if ($tokenpat->[1] eq 'script') { |
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while ($tokenpat = $pat->get_token and $tokenpat->[1] ne 'script') { |
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if ($tokenpat->[0] eq 'S') { |
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$partstring .= $tokenpat->[4]; |
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} elsif ($tokenpat->[0] eq 'T') { |
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$partstring .= $tokenpat->[1]; |
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} elsif ($tokenpat->[0] eq 'E') { |
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$partstring .= $tokenpat->[2]; |
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} |
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} |
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map {$partstring =~ s/\$$_/$token->[2]->{$_}/g; } @{$token->[3]}; |
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&run($partstring,$safeeval); |
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$partstring = ''; |
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} elsif ($tokenpat->[1] eq 'evaluate') { |
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$outputstring = &evaluate($tokenpat->[2]{expression},$safeeval); |
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$oustring .= $outputstring; |
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} else { |
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$oustring .= $tokenpat->[4]; |
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} |
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} elsif ($tokenpat->[0] eq 'E' and $tokenpat->[1] ne 'evaluate') { |
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$oustring .= $tokenpat->[1]; |
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} |
} |
} |
} |
$newarg = $oustring; |
} else { |
} else { |
#--------------------------------------------------------------- outtext output |
map {$newarg =~ s/\$$_/$token->[2]->{$_}/g; } @{$token->[3]}; |
while ($stoken = $pstyle->get_token and $stoken->[1] ne 'outtext') { |
} |
if ($stoken->[1] eq 'definetag') { |
$finaloutput .= $newarg; |
$flag = 1; |
} else { |
last; |
#------------------------------------------------ use default definition of tag |
} |
my $sub="start_$token->[1]"; |
} |
{ |
if ($flag == 0) { |
no strict 'refs'; |
while ($stoken = $pstyle->get_token and $stoken->[0] ne 'S') { |
if (defined (&$sub)) { |
$current_value .= $stoken->[1]; |
$currentstring = &$sub($target,$token,\@parstack); |
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$finaloutput .= $currentstring; |
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$currentstring = ''; |
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} else { |
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$finaloutput .= $token->[4]; |
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} |
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use strict 'refs'; |
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} |
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} |
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} elsif ($token->[0] eq 'E') { |
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# Put here check for correct final tag (to avoid existence of starting tag only) |
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pop @stack; |
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unless (exists $style_for_target{$token->[1]}) { |
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my $sub="end_$token->[1]"; |
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{ |
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no strict 'refs'; |
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if (defined (&$sub)) { |
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$currentstring = &$sub($target,$token,\@parstack); |
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$finaloutput .= $currentstring; |
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$currentstring = ''; |
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} else { |
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$finaloutput .= $token->[4]; |
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} |
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use strict 'refs'; |
} |
} |
while ($stoken->[1] ne 'definetag') { |
} |
if ($stoken->[0] eq 'S' and $stoken->[1] eq $target) { |
#-------------------------------------------------- end tag from the style file |
while ($stoken = $pstyle->get_token) { |
if (exists $style_for_target{'/'."$token->[1]"}) { |
if ($stoken->[1] ne $target) { |
$newarg = $style_for_target{'/'."$token->[1]"}; |
if ($stoken->[0] eq 'S') { |
if (index($newarg,'script') != -1 ) { |
my $flagelem = 0; |
my $pat = HTML::TokeParser->new(\$newarg); |
for (my $i=$#value_style-1;$i>0;$i=$i-2) { |
my $tokenpat; |
if ($stoken->[1] eq $value_style[$i]) { |
my $partstring = ''; |
$flagelem = 1; |
my $oustring = ''; |
$iele = $i+1; |
my $outputstring; |
last; |
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} |
while ($tokenpat = $pat->get_token) { |
} |
if ($tokenpat->[0] eq 'T') { |
if ($flagelem == 0) { |
$oustring .= $tokenpat->[1]; |
$current_value .= $stoken->[4]; |
} elsif ($tokenpat->[0] eq 'S') { |
} else { |
if ($tokenpat->[1] eq 'script') { |
$current_value .= $value_style[$iele]; |
while ($tokenpat = $pat->get_token and $tokenpat->[1] ne 'script') { |
} |
if ($tokenpat->[0] eq 'S') { |
} |
$partstring .= $tokenpat->[4]; |
if ($stoken->[0] eq 'E') { |
} elsif ($tokenpat->[0] eq 'T') { |
my $flagelem = 0; |
$partstring .= $tokenpat->[1]; |
for (my $i=$#value_style-1;$i>0;$i=$i-2) { |
} elsif ($tokenpat->[0] eq 'E') { |
if ('/'.$stoken->[1] eq $value_style[$i]) { |
$partstring .= $tokenpat->[2]; |
$flagelem = 1; |
} |
$iele = $i+1; |
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last; |
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} |
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} |
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if ($flagelem == 0) { |
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$current_value .= $stoken->[2]; |
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} else { |
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$current_value .= $value_style[$iele]; |
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} |
} |
} |
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if ($stoken->[0] eq 'T') { |
my @tempor_list = split(',',$parstack[$#parstack]); |
$current_value .= $stoken->[1]; |
my @te_kl = (); |
} |
my %tempor_hash = (); |
} else { |
map {(my $onete,my $twote) = split('=',$_); push (@te_kl,$onete); |
last; |
$tempor_hash{$onete} = $twote} @tempor_list; |
} |
map {$partstring =~ s/\$$_/$tempor_hash{$_}/g; } @te_kl; |
} |
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} elsif ($stoken->[0] eq 'S' and $stoken->[1] ne $target) { |
&run($partstring,$safeeval); |
my $tempotempo = $stoken->[1]; |
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while ($stoken = $pstyle->get_token and $stoken->[1] ne $tempotempo) { |
$partstring = ''; |
} |
} elsif ($tokenpat->[1] eq 'evaluate') { |
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$outputstring = &evaluate($tokenpat->[2]{expression},$safeeval); |
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$oustring .= $outputstring; |
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} else { |
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$oustring .= $tokenpat->[4]; |
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} |
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} elsif ($tokenpat->[0] eq 'E' and $tokenpat->[1] ne 'evaluate') { |
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$oustring .= $tokenpat->[1]; |
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} |
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} |
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$newarg = $oustring; |
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} else { |
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my @very_temp = split(',',@parstack[$#parstack]); |
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map {my @ret= split('=',$_); $newarg =~ s/\$$ret[0]/$ret[1]/g; } @very_temp; |
} |
} |
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while ($stoken = $pstyle->get_token) { |
$finaloutput .= $newarg; |
if ($stoken->[0] eq 'T') { |
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$current_value .= $stoken->[1]; |
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} |
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if ($stoken->[0] eq 'E') { |
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last; |
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} |
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if ($stoken->[0] eq 'S') { |
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last; |
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} |
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} |
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} |
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} |
} |
} |
pop @parstack; |
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} |
} |
} |
$current_value =~ s/(\s)+/$1/g; |
return $finaloutput; |
if ($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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1; |
1; |