File Coverage

blib/lib/POE/Filter/LZW.pm

Criterion	Covered	Total	%
statement	18	61	29.5
branch	0	12	0.0
condition			n/a
subroutine	6	13	46.1
pod	7	7	100.0
total	31	93	33.3

package POE::Filter::LZW;

use strict;
use warnings;
use Carp;
use Compress::LZW qw(compress decompress);
use vars qw($VERSION);
use base qw(POE::Filter);

$VERSION = '1.72';

sub new {
  my $type = shift;
  croak "$type requires an even number of parameters" if @_ % 2;
  my $buffer = { @_ };
  $buffer->{ lc $_ } = delete $buffer->{ $_ } for keys %{ $buffer };
  $buffer->{BUFFER} = [];
  return bless $buffer, $type;
}

sub level {
  my $self = shift;
  my $level = shift;
  $self->{level} = $level if defined $level;
  return $self->{level};
}

sub get {
  my ($self, $raw_lines) = @_;
  my $events = [];

  foreach my $raw_line (@$raw_lines) {
	if ( my $line = decompress( $raw_line ) ) {
		push @$events, $line;
	}
	else {
		warn "Couldn\'t decompress input\n";
	}
  }
  return $events;
}

sub get_one_start {
  my ($self, $raw_lines) = @_;
  push @{ $self->{BUFFER} }, $_ for @{ $raw_lines };
}

sub get_one {
  my $self = shift;
  my $events = [];

  if ( my $raw_line = shift @{ $self->{BUFFER} } ) {
	if ( my $line = decompress( $raw_line ) ) {
		push @$events, $line;
	}
	else {
		warn "Couldn\'t decompress input\n";
	}
  }
  return $events;
}

sub put {
  my ($self, $events) = @_;
  my $raw_lines = [];

  foreach my $event (@$events) {
	if ( my $line = compress( $event, $self->{level} ) ) {
		push @$raw_lines, $line;
	}
	else {
		warn "Couldn\'t compress output\n";
	}
  }
  return $raw_lines;
}

sub clone {
  my $self = shift;
  my $nself = { };
  $nself->{$_} = $self->{$_} for keys %{ $self };
  $nself->{BUFFER} = [ ];
  return bless $nself, ref $self;
}

1;

__END__