package IO::Compress::Adapter::Deflate ;

use strict;
use warnings;
use bytes;

use IO::Compress::Base::Common 2.060 qw(:Status);
use Compress::Raw::Zlib 2.060 qw( !crc32 !adler32 ) ;

require Exporter;
our ($VERSION, @ISA, @EXPORT_OK, %EXPORT_TAGS, @EXPORT, %DEFLATE_CONSTANTS);

$VERSION = '2.060';
@ISA = qw(Exporter);
@EXPORT_OK = @Compress::Raw::Zlib::DEFLATE_CONSTANTS;
%EXPORT_TAGS = %Compress::Raw::Zlib::DEFLATE_CONSTANTS;
@EXPORT = @EXPORT_OK;
%DEFLATE_CONSTANTS = %EXPORT_TAGS ;

sub mkCompObject
{
my $crc32 = shift ;
my $adler32 = shift ;
my $level = shift ;
my $strategy = shift ;

my ($def, $status) = new Compress::Raw::Zlib::Deflate
-AppendOutput => 1,
-CRC32 => $crc32,
-ADLER32 => $adler32,
-Level => $level,
-Strategy => $strategy,
-WindowBits => - MAX_WBITS;

return (undef, "Cannot create Deflate object: $status", $status)
if $status != Z_OK;

return bless {'Def' => $def,
'Error' => '',
} ;
}

sub compr
{
my $self = shift ;

my $def = $self->{Def};

my $status = $def->deflate($_[0], $_[1]) ;
$self->{ErrorNo} = $status;

if ($status != Z_OK)
{
$self->{Error} = "Deflate Error: $status";
return STATUS_ERROR;
}

return STATUS_OK;
}

sub flush
{
my $self = shift ;

my $def = $self->{Def};

my $opt = $_[1] || Z_FINISH;
my $status = $def->flush($_[0], $opt);
$self->{ErrorNo} = $status;

if ($status != Z_OK)
{
$self->{Error} = "Deflate Error: $status";
return STATUS_ERROR;
}

return STATUS_OK;
}

sub close
{
my $self = shift ;

my $def = $self->{Def};

$def->flush($_[0], Z_FINISH)
if defined $def ;
}

sub reset
{
my $self = shift ;

my $def = $self->{Def};

my $status = $def->deflateReset() ;
$self->{ErrorNo} = $status;
if ($status != Z_OK)
{
$self->{Error} = "Deflate Error: $status";
return STATUS_ERROR;
}

return STATUS_OK;
}

sub deflateParams
{
my $self = shift ;

my $def = $self->{Def};

my $status = $def->deflateParams(@_);
$self->{ErrorNo} = $status;
if ($status != Z_OK)
{
$self->{Error} = "deflateParams Error: $status";
return STATUS_ERROR;
}

return STATUS_OK;
}



#sub total_out
#{
# my $self = shift ;
# $self->{Def}->total_out();
#}
#
#sub total_in
#{
# my $self = shift ;
# $self->{Def}->total_in();
#}

sub compressedBytes
{
my $self = shift ;

$self->{Def}->compressedBytes();
}

sub uncompressedBytes
{
my $self = shift ;
$self->{Def}->uncompressedBytes();
}




sub crc32
{
my $self = shift ;
$self->{Def}->crc32();
}

sub adler32
{
my $self = shift ;
$self->{Def}->adler32();
}


1;

__END__