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package HTML::FormFu::OutputProcessor::Indent;
$HTML::FormFu::OutputProcessor::Indent::VERSION = '2.01';
use Moose;
use MooseX::Attribute::FormFuChained;
extends 'HTML::FormFu::OutputProcessor';
use HTML::FormFu::Constants qw( $EMPTY_STR $SPACE );
use HTML::TokeParser::Simple;
use List::MoreUtils qw( any );
has indent => (
is => 'rw',
default => "\t",
lazy => 1,
traits => ['FormFuChained'],
);
has preserve_tags => (
is => 'rw',
default => sub { [qw( pre textarea )] },
lazy => 1,
traits => ['FormFuChained'],
);
sub process {
my ( $self, $input ) = @_;
my $indent = $self->indent;
my $parser = HTML::TokeParser::Simple->new( \$input );
my @preserve_tags = @{ $self->preserve_tags };
my $count = 0;
my $in_pre = 0;
my $output = $EMPTY_STR;
while ( my $token = $parser->get_token ) {
if ( $token->is_start_tag ) {
my $tag = $token->get_tag;
if ( any { $tag eq $_ } @preserve_tags ) {
$in_pre = 1;
}
$output .= $indent x $count;
$output .= $token->as_is;
if ( !defined $token->get_attrseq->[-1]
|| $token->get_attrseq->[-1] ne "/" )
{
$count++;
}
}
elsif ( $token->is_end_tag ) {
my $tag = $token->get_tag;
$count--;
if ( $output =~ m/ > \s* \z /x && !$in_pre ) {
$output .= "\n" . $indent x $count;
}
if ( any { $tag eq $_ } @preserve_tags ) {
$in_pre = 0;
}
$output .= $token->as_is;
}
elsif ( $token->is_text ) {
my $text = $token->as_is;
if ( length $parser->peek && !$in_pre ) {
$text =~ s/\A\s+/ /;
$text =~ s/\s+\z/ /;
}
if ( $text eq $SPACE && $parser->peek =~ m/ < /x ) {
$text = $EMPTY_STR;
}
$output .= $text;
}
else {
$output .= $token->as_is;
}
if ( $parser->peek =~ m{ < (?!/) }x && !$in_pre ) {
$output .= "\n";
}
}
return $output;
}
__PACKAGE__->meta->make_immutable;
1;
__END__
=head1 NAME
HTML::FormFu::OutputProcessor::Indent - Nicely Indent HTML Output
=head1 SYNOPSIS
---
output_processors:
- Indent
=head1 METHODS
=head2 indent
Arguments: $string
Default Value: "\t"
The string to be used to indent the HTML.
=head2 preserve_tags
Arguments: \@tags
Default Value: ['pre', 'textarea']
An arrayref of tag names who's contents should not be processed.
=head1 SEE ALSO
Is a sub-class of, and inherits methods from L<HTML::FormFu::OutputProcessor>
L<HTML::FormFu>
=head1 AUTHOR
Carl Franks C<cfranks@cpan.org>
=head1 LICENSE
This library is free software, you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
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