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package IO::Uncompress::UnLzma ; |
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use strict ; |
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use warnings; |
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use bytes; |
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use IO::Compress::Base::Common 2.072 qw(:Status createSelfTiedObject); |
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use IO::Uncompress::Base 2.072 ; |
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use IO::Uncompress::Adapter::UnLzma 2.072 ; |
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require Exporter ; |
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our ($VERSION, @ISA, @EXPORT_OK, %EXPORT_TAGS, $UnLzmaError); |
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$VERSION = '2.072'; |
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$UnLzmaError = ''; |
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@ISA = qw( Exporter IO::Uncompress::Base ); |
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@EXPORT_OK = qw( $UnLzmaError unlzma ) ; |
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#%EXPORT_TAGS = %IO::Uncompress::Base::EXPORT_TAGS ; |
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push @{ $EXPORT_TAGS{all} }, @EXPORT_OK ; |
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#Exporter::export_ok_tags('all'); |
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sub new |
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{ |
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my $class = shift ; |
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my $obj = createSelfTiedObject($class, \$UnLzmaError); |
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$obj->_create(undef, 0, @_); |
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} |
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sub unlzma |
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{ |
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my $obj = createSelfTiedObject(undef, \$UnLzmaError); |
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return $obj->_inf(@_); |
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} |
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#our %PARAMS = ( |
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#'verbosity' => [IO::Compress::Base::Common::Parse_boolean, 0], |
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#'small' => [IO::Compress::Base::Common::Parse_boolean, 0], |
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# ); |
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sub getExtraParams |
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{ |
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return (); |
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} |
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sub ckParams |
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{ |
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my $self = shift ; |
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my $got = shift ; |
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return 1; |
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} |
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sub mkUncomp |
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{ |
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my $self = shift ; |
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my $got = shift ; |
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#my $Small = $got->getValue('small'); |
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#my $Verbosity = $got->getValue('verbosity'); |
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my ($obj, $errstr, $errno) = IO::Uncompress::Adapter::UnLzma::mkUncompObject( |
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); |
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return $self->saveErrorString(undef, $errstr, $errno) |
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if ! defined $obj; |
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*$self->{Uncomp} = $obj; |
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*$self->{Info} = $self->ckMagic() |
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or return 0 ; |
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return 1; |
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} |
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sub ckMagic |
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{ |
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my $self = shift; |
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my $got = $self->isLzma(@_); |
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if ($got) { |
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*$self->{Pending} = *$self->{HeaderPending} ; |
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} |
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else { |
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$self->pushBack(*$self->{HeaderPending}); |
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*$self->{Uncomp}->reset(); |
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} |
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*$self->{HeaderPending} = ''; |
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return $got ; |
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} |
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sub isLzma |
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{ |
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my $self = shift ; |
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my $magic = shift; |
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$magic = '' unless defined $magic ; |
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my $buffer = ''; |
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$self->smartRead(\$buffer, *$self->{BlockSize}) >= 0 |
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or return $self->saveErrorString(undef, "No data to read"); |
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my $temp_buf = $magic . $buffer ; |
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*$self->{HeaderPending} = $temp_buf ; |
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$buffer = ''; |
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my $status = *$self->{Uncomp}->uncompr(\$temp_buf, \$buffer, $self->smartEof()) ; |
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return $self->saveErrorString(undef, *$self->{Uncomp}{Error}, STATUS_ERROR) |
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if $status == STATUS_ERROR; |
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$self->pushBack($temp_buf) ; |
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return $self->saveErrorString(undef, "unexpected end of file", STATUS_ERROR) |
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if $self->smartEof() && $status != STATUS_ENDSTREAM; |
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#my $buf_len = *$self->{Uncomp}->uncompressedBytes(); |
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my $buf_len = length $buffer; |
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if ($status == STATUS_ENDSTREAM) { |
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if (*$self->{MultiStream} |
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&& (length $temp_buf || ! $self->smartEof())){ |
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*$self->{NewStream} = 1 ; |
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*$self->{EndStream} = 0 ; |
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} |
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else { |
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*$self->{EndStream} = 1 ; |
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} |
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} |
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*$self->{HeaderPending} = $buffer ; |
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*$self->{InflatedBytesRead} = $buf_len ; |
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*$self->{TotalInflatedBytesRead} += $buf_len ; |
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*$self->{Type} = 'lzma'; |
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$self->saveStatus(STATUS_OK); |
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return { |
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'Type' => 'lzma', |
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'HeaderLength' => 0, |
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'TrailerLength' => 0, |
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'Header' => '' |
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}; |
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return ''; |
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# my $magic ; |
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# $self->smartReadExact(\$magic, 4); |
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# |
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# *$self->{HeaderPending} = $magic ; |
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# |
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# return $self->HeaderError("Header size is " . |
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# 4 . " bytes") |
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# if length $magic != 4; |
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# |
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# return $self->HeaderError("Bad Magic.") |
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# if ! isBzip2Magic($magic) ; |
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# |
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# |
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# *$self->{Type} = 'bzip2'; |
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# return $magic; |
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} |
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sub readHeader |
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{ |
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my $self = shift; |
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my $magic = shift ; |
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$self->pushBack($magic); |
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*$self->{HeaderPending} = ''; |
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return { |
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'Type' => 'lzma', |
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'FingerprintLength' => 0, |
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'HeaderLength' => 0, |
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'TrailerLength' => 0, |
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'Header' => '' |
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}; |
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} |
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192
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sub chkTrailer |
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{ |
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return STATUS_OK; |
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} |
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1 ; |
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__END__ |