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package Tk::CodeText::HTML;
use vars qw($VERSION);
$VERSION = '0.2';
use strict;
use base('Tk::CodeText::Template');
sub new {
my ($proto, $rules) = @_;
my $class = ref($proto) || $proto;
if (not defined($rules)) {
$rules = [
['Text'],
['Tag', -foreground => 'brown'],
['Attr', -foreground => 'darkblue'],
['Comment', -foreground => 'lightblue'],
['Value', -foreground => 'orange'],
['String', -foreground => 'red'],
['SpChar', -foreground => 'magenta'],
];
};
my $self = $class->SUPER::new($rules);
$self->stackPush('Text');
bless ($self, $class);
return $self;
}
sub highlight {
my $hlt = shift;
my @in = split //, shift;
$hlt->snippetParse;
my $out = $hlt->out;
@$out = ();
foreach my $c (@in) {
if ($c eq '<') {
if ($hlt->stackTop eq 'Text') {
# print "opening Tag\n";
$hlt->snippetParse;
$hlt->snippetAppend($c);
$hlt->stackPush('Tag');
} else {
$hlt->snippetAppend($c)
}
} elsif ($c eq '>') {
if ($hlt->stackTop eq 'Tag') {
# print "closing Tag\n";
$hlt->snippetAppend($c);
$hlt->snippetParse;
$hlt->stackPull;
} elsif (($hlt->stackTop eq 'Value') or ($hlt->stackTop eq 'Attr') or ($hlt->stackTop eq 'Comment')) {
# print "closing Tag\n";
$hlt->snippetParse;
$hlt->stackPull;
$hlt->snippetAppend($c);
$hlt->snippetParse;
$hlt->stackPull;
} else {
$hlt->snippetAppend($c);
}
} elsif ($c eq '"') {
if (($hlt->stackTop eq 'Value') or ($hlt->stackTop eq 'Comment')) {
# print "opening String\n";
$hlt->snippetParse;
$hlt->snippetAppend($c);
$hlt->stackPush('String');
} elsif ($hlt->stackTop eq 'String') {
# print "closing String\n";
$hlt->snippetAppend($c);
$hlt->snippetParse;
$hlt->stackPull;
} else {
$hlt->snippetAppend($c);
}
} elsif ($c eq '!') {
if ($hlt->stackTop eq 'Tag') {
# print "opening Comment\n";
$hlt->snippetParse;
$hlt->snippetAppend($c);
$hlt->stackPush('Comment');
} else {
$hlt->snippetAppend($c);
}
} elsif ($c eq '&') {
if ($hlt->stackTop eq 'Text') {
# print "opening SpChar\n";
$hlt->snippetParse;
$hlt->snippetAppend($c);
$hlt->stackPush('SpChar');
} else {
$hlt->snippetAppend($c);
}
} elsif ($c eq ';') {
if ($hlt->stackTop eq 'SpChar') {
# print "closing SpChar\n";
$hlt->snippetAppend($c);
$hlt->snippetParse;
$hlt->stackPull;
} else {
$hlt->snippetAppend($c);
}
} elsif ($c eq '=') {
if ($hlt->stackTop eq 'Attr') {
# print "opening Value\n";
$hlt->snippetParse;
$hlt->stackPull;
$hlt->snippetAppend($c);
$hlt->snippetParse;
$hlt->stackPush('Value');
} else {
$hlt->snippetAppend($c);
}
} elsif ($c =~ /\s/) {
if ($hlt->stackTop eq 'Tag') {
# print "opening Attr\n";
$hlt->snippetParse;
$hlt->snippetAppend($c);
$hlt->stackPush('Attr');
} elsif ($hlt->stackTop eq 'Value') {
$hlt->snippetParse;
$hlt->snippetAppend($c);
$hlt->stackPull;
$hlt->stackPush('Attr');
} elsif ($hlt->stackTop eq 'SpChar') {
$hlt->snippetParse;
$hlt->snippetAppend($c);
$hlt->stackPull;
} else {
$hlt->snippetAppend($c);
}
} else {
$hlt->snippetAppend($c);
}
}
$hlt->snippetParse;
return @$out;
}
1;
__END__
=head1 NAME
Tk::CodeText::HTML - a Plugin for HTML syntax highlighting
=head1 SYNOPSIS
require Tk::CodeText::HTML;
my $sh = new Tk::CodeText::HTML($textwidget, [
['Text'],
['Tag', -foreground => 'brown'],
['Attr', -foreground => 'darkblue'],
['Comment', -foreground => 'lightblue'],
['Value', -foreground => 'orange'],
['String', -foreground => 'red'],
['SpChar', -foreground => 'magenta'],
]);
=head1 DESCRIPTION
Tk::CodeText::HTML is a plugin module that provides syntax highlighting
for HTML to a Tk::CodeText text widget.
It works quite fine, but can use refinement and optimization.
It inherits Tk::CodeText::None. See also there.
=head1 METHODS
=over 4
=item B<highlight>(I<$string>);
returns a list of string snippets and tags that can be inserted
in a Tk::Text like widget instantly.
=item B<syntax>
returns 'HTML'.
=back
=cut
=head1 AUTHOR
Hans Jeuken (haje@toneel.demon.nl)
=cut
=head1 BUGS
Unknown
=cut
|
