package IO::Uncompress::Adapter::Inflate; use strict; use warnings; #use bytes; use IO::Compress::Base::Common 2.061 qw(:Status); use Compress::Raw::Zlib 2.061 qw(Z_OK Z_BUF_ERROR Z_STREAM_END Z_FINISH MAX_WBITS); our ($VERSION); $VERSION = '2.061'; sub mkUncompObject { my $crc32 = shift || 1; my $adler32 = shift || 1; my $scan = shift || 0; my $inflate ; my $status ; if ($scan) { ($inflate, $status) = new Compress::Raw::Zlib::InflateScan #LimitOutput => 1, CRC32 => $crc32, ADLER32 => $adler32, WindowBits => - MAX_WBITS ; } else { ($inflate, $status) = new Compress::Raw::Zlib::Inflate AppendOutput => 1, LimitOutput => 1, CRC32 => $crc32, ADLER32 => $adler32, WindowBits => - MAX_WBITS ; } return (undef, "Could not create Inflation object: $status", $status) if $status != Z_OK ; return bless {'Inf' => $inflate, 'CompSize' => 0, 'UnCompSize' => 0, 'Error' => '', 'ConsumesInput' => 1, } ; } sub uncompr { my $self = shift ; my $from = shift ; my $to = shift ; my $eof = shift ; my $inf = $self->{Inf}; my $status = $inf->inflate($from, $to, $eof); $self->{ErrorNo} = $status; if ($status != Z_OK && $status != Z_STREAM_END && $status != Z_BUF_ERROR) { $self->{Error} = "Inflation Error: $status"; return STATUS_ERROR; } return STATUS_OK if $status == Z_BUF_ERROR ; # ??? return STATUS_OK if $status == Z_OK ; return STATUS_ENDSTREAM if $status == Z_STREAM_END ; return STATUS_ERROR ; } sub reset { my $self = shift ; $self->{Inf}->inflateReset(); return STATUS_OK ; } #sub count #{ # my $self = shift ; # $self->{Inf}->inflateCount(); #} sub crc32 { my $self = shift ; $self->{Inf}->crc32(); } sub compressedBytes { my $self = shift ; $self->{Inf}->compressedBytes(); } sub uncompressedBytes { my $self = shift ; $self->{Inf}->uncompressedBytes(); } sub adler32 { my $self = shift ; $self->{Inf}->adler32(); } sub sync { my $self = shift ; ( $self->{Inf}->inflateSync(@_) == Z_OK) ? STATUS_OK : STATUS_ERROR ; } sub getLastBlockOffset { my $self = shift ; $self->{Inf}->getLastBlockOffset(); } sub getEndOffset { my $self = shift ; $self->{Inf}->getEndOffset(); } sub resetLastBlockByte { my $self = shift ; $self->{Inf}->resetLastBlockByte(@_); } sub createDeflateStream { my $self = shift ; my $deflate = $self->{Inf}->createDeflateStream(@_); return bless {'Def' => $deflate, 'CompSize' => 0, 'UnCompSize' => 0, 'Error' => '', }, 'IO::Compress::Adapter::Deflate'; } 1; __END__