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package IO::Compress::Adapter::Deflate ;
use strict;
use warnings;
use bytes;
use IO::Compress::Base::Common 2.106 qw(:Status);
use Compress::Raw::Zlib 2.103 qw( !crc32 !adler32 ) ;
require Exporter;
our ($VERSION, @ISA, @EXPORT_OK, %EXPORT_TAGS, @EXPORT, %DEFLATE_CONSTANTS);
$VERSION = '2.106';
@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) = Compress::Raw::Zlib::Deflate->new(
-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__