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- package IO::Compress::Zip ;
-
- use strict ;
- use warnings;
- use bytes;
-
- use IO::Compress::Base::Common 2.008 qw(:Status createSelfTiedObject);
- use IO::Compress::RawDeflate 2.008 ;
- use IO::Compress::Adapter::Deflate 2.008 ;
- use IO::Compress::Adapter::Identity 2.008 ;
- use IO::Compress::Zlib::Extra 2.008 ;
- use IO::Compress::Zip::Constants 2.008 ;
-
-
- use Compress::Raw::Zlib 2.008 qw(crc32) ;
- BEGIN
- {
- eval { require IO::Compress::Adapter::Bzip2 ;
- import IO::Compress::Adapter::Bzip2 2.008 ;
- require IO::Compress::Bzip2 ;
- import IO::Compress::Bzip2 2.008 ;
- } ;
- }
-
-
- require Exporter ;
-
- our ($VERSION, @ISA, @EXPORT_OK, %EXPORT_TAGS, $ZipError);
-
- $VERSION = '2.008';
- $ZipError = '';
-
- @ISA = qw(Exporter IO::Compress::RawDeflate);
- @EXPORT_OK = qw( $ZipError zip ) ;
- %EXPORT_TAGS = %IO::Compress::RawDeflate::DEFLATE_CONSTANTS ;
- push @{ $EXPORT_TAGS{all} }, @EXPORT_OK ;
-
- $EXPORT_TAGS{zip_method} = [qw( ZIP_CM_STORE ZIP_CM_DEFLATE ZIP_CM_BZIP2 )];
- push @{ $EXPORT_TAGS{all} }, @{ $EXPORT_TAGS{zip_method} };
-
- Exporter::export_ok_tags('all');
-
- sub new
- {
- my $class = shift ;
-
- my $obj = createSelfTiedObject($class, \$ZipError);
- $obj->_create(undef, @_);
- }
-
- sub zip
- {
- my $obj = createSelfTiedObject(undef, \$ZipError);
- return $obj->_def(@_);
- }
-
- sub mkComp
- {
- my $self = shift ;
- my $class = shift ;
- my $got = shift ;
-
- my ($obj, $errstr, $errno) ;
-
- if (*$self->{ZipData}{Method} == ZIP_CM_STORE) {
- ($obj, $errstr, $errno) = IO::Compress::Adapter::Identity::mkCompObject(
- $got->value('Level'),
- $got->value('Strategy')
- );
- }
- elsif (*$self->{ZipData}{Method} == ZIP_CM_DEFLATE) {
- ($obj, $errstr, $errno) = IO::Compress::Adapter::Deflate::mkCompObject(
- $got->value('CRC32'),
- $got->value('Adler32'),
- $got->value('Level'),
- $got->value('Strategy')
- );
- }
- elsif (*$self->{ZipData}{Method} == ZIP_CM_BZIP2) {
- ($obj, $errstr, $errno) = IO::Compress::Adapter::Bzip2::mkCompObject(
- $got->value('BlockSize100K'),
- $got->value('WorkFactor'),
- $got->value('Verbosity')
- );
- *$self->{ZipData}{CRC32} = crc32(undef);
- }
-
- return $self->saveErrorString(undef, $errstr, $errno)
- if ! defined $obj;
-
- if (! defined *$self->{ZipData}{StartOffset}) {
- *$self->{ZipData}{StartOffset} = 0;
- *$self->{ZipData}{Offset} = new U64 ;
- }
-
- return $obj;
- }
-
- sub reset
- {
- my $self = shift ;
-
- *$self->{Compress}->reset();
- *$self->{ZipData}{CRC32} = Compress::Raw::Zlib::crc32('');
-
- return STATUS_OK;
- }
-
- sub filterUncompressed
- {
- my $self = shift ;
-
- if (*$self->{ZipData}{Method} == ZIP_CM_DEFLATE) {
- *$self->{ZipData}{CRC32} = *$self->{Compress}->crc32();
- }
- else {
- *$self->{ZipData}{CRC32} = crc32(${$_[0]}, *$self->{ZipData}{CRC32});
-
- }
- }
-
- sub mkHeader
- {
- my $self = shift;
- my $param = shift ;
-
- *$self->{ZipData}{StartOffset} = *$self->{ZipData}{Offset}->get32bit() ;
-
- my $filename = '';
- $filename = $param->value('Name') || '';
-
- my $comment = '';
- $comment = $param->value('Comment') || '';
-
- my $hdr = '';
-
- my $time = _unixToDosTime($param->value('Time'));
-
- my $extra = '';
- my $ctlExtra = '';
- my $empty = 0;
- my $osCode = $param->value('OS_Code') ;
- my $extFileAttr = 0 ;
-
- if (*$self->{ZipData}{Zip64}) {
- $empty = 0xFFFF;
-
- my $x = '';
- $x .= pack "V V", 0, 0 ; # uncompressedLength
- $x .= pack "V V", 0, 0 ; # compressedLength
- $x .= *$self->{ZipData}{Offset}->getPacked_V64() ; # offset to local hdr
- #$x .= pack "V ", 0 ; # disk no
-
- $x = IO::Compress::Zlib::Extra::mkSubField(ZIP_EXTRA_ID_ZIP64, $x);
- $extra .= $x;
- $ctlExtra .= $x;
- }
-
- if (! $param->value('Minimal')) {
- if (defined $param->value('exTime'))
- {
- $extra .= mkExtendedTime($param->value('MTime'),
- $param->value('ATime'),
- $param->value('CTime'));
-
- $ctlExtra .= mkExtendedTime($param->value('MTime'));
- }
-
- if ( $param->value('UID') && $osCode == ZIP_OS_CODE_UNIX)
- {
- $extra .= mkUnix2Extra( $param->value('UID'), $param->value('GID'));
- $ctlExtra .= mkUnix2Extra();
- }
-
- # TODO - this code assumes Unix.
- #$extFileAttr = 0666 << 16
- # if $osCode == ZIP_OS_CODE_UNIX ;
-
- $extFileAttr = $param->value('ExtAttr')
- if defined $param->value('ExtAttr') ;
-
- $extra .= $param->value('ExtraFieldLocal')
- if defined $param->value('ExtraFieldLocal');
-
- $ctlExtra .= $param->value('ExtraFieldCentral')
- if defined $param->value('ExtraFieldCentral');
- }
-
- my $gpFlag = 0 ;
- $gpFlag |= ZIP_GP_FLAG_STREAMING_MASK
- if *$self->{ZipData}{Stream} ;
-
- my $method = *$self->{ZipData}{Method} ;
-
- my $version = $ZIP_CM_MIN_VERSIONS{$method};
- $version = ZIP64_MIN_VERSION
- if ZIP64_MIN_VERSION > $version && *$self->{ZipData}{Zip64};
- my $madeBy = ($param->value('OS_Code') << 8) + $version;
- my $extract = $version;
-
- *$self->{ZipData}{Version} = $version;
- *$self->{ZipData}{MadeBy} = $madeBy;
-
- my $ifa = 0;
- $ifa |= ZIP_IFA_TEXT_MASK
- if $param->value('TextFlag');
-
- $hdr .= pack "V", ZIP_LOCAL_HDR_SIG ; # signature
- $hdr .= pack 'v', $extract ; # extract Version & OS
- $hdr .= pack 'v', $gpFlag ; # general purpose flag (set streaming mode)
- $hdr .= pack 'v', $method ; # compression method (deflate)
- $hdr .= pack 'V', $time ; # last mod date/time
- $hdr .= pack 'V', 0 ; # crc32 - 0 when streaming
- $hdr .= pack 'V', $empty ; # compressed length - 0 when streaming
- $hdr .= pack 'V', $empty ; # uncompressed length - 0 when streaming
- $hdr .= pack 'v', length $filename ; # filename length
- $hdr .= pack 'v', length $extra ; # extra length
-
- $hdr .= $filename ;
- $hdr .= $extra ;
-
-
- my $ctl = '';
-
- $ctl .= pack "V", ZIP_CENTRAL_HDR_SIG ; # signature
- $ctl .= pack 'v', $madeBy ; # version made by
- $ctl .= pack 'v', $extract ; # extract Version
- $ctl .= pack 'v', $gpFlag ; # general purpose flag (streaming mode)
- $ctl .= pack 'v', $method ; # compression method (deflate)
- $ctl .= pack 'V', $time ; # last mod date/time
- $ctl .= pack 'V', 0 ; # crc32
- $ctl .= pack 'V', $empty ; # compressed length
- $ctl .= pack 'V', $empty ; # uncompressed length
- $ctl .= pack 'v', length $filename ; # filename length
- $ctl .= pack 'v', length $ctlExtra ; # extra length
- $ctl .= pack 'v', length $comment ; # file comment length
- $ctl .= pack 'v', 0 ; # disk number start
- $ctl .= pack 'v', $ifa ; # internal file attributes
- $ctl .= pack 'V', $extFileAttr ; # external file attributes
- if (! *$self->{ZipData}{Zip64}) {
- $ctl .= pack 'V', *$self->{ZipData}{Offset}->get32bit() ; # offset to local header
- }
- else {
- $ctl .= pack 'V', $empty ; # offset to local header
- }
-
- $ctl .= $filename ;
- *$self->{ZipData}{StartOffset64} = 4 + length $ctl;
- $ctl .= $ctlExtra ;
- $ctl .= $comment ;
-
- *$self->{ZipData}{Offset}->add(length $hdr) ;
-
- *$self->{ZipData}{CentralHeader} = $ctl;
-
- return $hdr;
- }
-
- sub mkTrailer
- {
- my $self = shift ;
-
- my $crc32 ;
- if (*$self->{ZipData}{Method} == ZIP_CM_DEFLATE) {
- $crc32 = pack "V", *$self->{Compress}->crc32();
- }
- else {
- $crc32 = pack "V", *$self->{ZipData}{CRC32};
- }
-
- my $ctl = *$self->{ZipData}{CentralHeader} ;
-
- my $sizes ;
- if (! *$self->{ZipData}{Zip64}) {
- $sizes .= *$self->{CompSize}->getPacked_V32() ; # Compressed size
- $sizes .= *$self->{UnCompSize}->getPacked_V32() ; # Uncompressed size
- }
- else {
- $sizes .= *$self->{CompSize}->getPacked_V64() ; # Compressed size
- $sizes .= *$self->{UnCompSize}->getPacked_V64() ; # Uncompressed size
- }
-
- my $data = $crc32 . $sizes ;
-
-
- my $hdr = '';
-
- if (*$self->{ZipData}{Stream}) {
- $hdr = pack "V", ZIP_DATA_HDR_SIG ; # signature
- $hdr .= $data ;
- }
- else {
- $self->writeAt(*$self->{ZipData}{StartOffset} + 14, $data)
- or return undef;
- }
-
- if (! *$self->{ZipData}{Zip64})
- { substr($ctl, 16, length $data) = $data }
- else {
- substr($ctl, 16, length $crc32) = $crc32 ;
- my $s = *$self->{UnCompSize}->getPacked_V64() ; # Uncompressed size
- $s .= *$self->{CompSize}->getPacked_V64() ; # Compressed size
- substr($ctl, *$self->{ZipData}{StartOffset64}, length $s) = $s ;
- }
-
- *$self->{ZipData}{Offset}->add(length($hdr));
- *$self->{ZipData}{Offset}->add( *$self->{CompSize} );
- push @{ *$self->{ZipData}{CentralDir} }, $ctl ;
-
- return $hdr;
- }
-
- sub mkFinalTrailer
- {
- my $self = shift ;
-
- my $comment = '';
- $comment = *$self->{ZipData}{ZipComment} ;
-
- my $cd_offset = *$self->{ZipData}{Offset}->get32bit() ; # offset to start central dir
-
- my $entries = @{ *$self->{ZipData}{CentralDir} };
- my $cd = join '', @{ *$self->{ZipData}{CentralDir} };
- my $cd_len = length $cd ;
-
- my $z64e = '';
-
- if ( *$self->{ZipData}{Zip64} ) {
-
- my $v = *$self->{ZipData}{Version} ;
- my $mb = *$self->{ZipData}{MadeBy} ;
- $z64e .= pack 'v', $v ; # Version made by
- $z64e .= pack 'v', $mb ; # Version to extract
- $z64e .= pack 'V', 0 ; # number of disk
- $z64e .= pack 'V', 0 ; # number of disk with central dir
- $z64e .= U64::pack_V64 $entries ; # entries in central dir on this disk
- $z64e .= U64::pack_V64 $entries ; # entries in central dir
- $z64e .= U64::pack_V64 $cd_len ; # size of central dir
- $z64e .= *$self->{ZipData}{Offset}->getPacked_V64() ; # offset to start central dir
-
- $z64e = pack("V", ZIP64_END_CENTRAL_REC_HDR_SIG) # signature
- . U64::pack_V64(length $z64e)
- . $z64e ;
-
- *$self->{ZipData}{Offset}->add(length $cd) ;
-
- $z64e .= pack "V", ZIP64_END_CENTRAL_LOC_HDR_SIG; # signature
- $z64e .= pack 'V', 0 ; # number of disk with central dir
- $z64e .= *$self->{ZipData}{Offset}->getPacked_V64() ; # offset to end zip64 central dir
- $z64e .= pack 'V', 1 ; # Total number of disks
-
- # TODO - fix these when info-zip 3 is fixed.
- #$cd_len =
- #$cd_offset =
- $entries = 0xFFFF ;
- }
-
- my $ecd = '';
- $ecd .= pack "V", ZIP_END_CENTRAL_HDR_SIG ; # signature
- $ecd .= pack 'v', 0 ; # number of disk
- $ecd .= pack 'v', 0 ; # number of disk with central dir
- $ecd .= pack 'v', $entries ; # entries in central dir on this disk
- $ecd .= pack 'v', $entries ; # entries in central dir
- $ecd .= pack 'V', $cd_len ; # size of central dir
- $ecd .= pack 'V', $cd_offset ; # offset to start central dir
- $ecd .= pack 'v', length $comment ; # zipfile comment length
- $ecd .= $comment;
-
- return $cd . $z64e . $ecd ;
- }
-
- sub ckParams
- {
- my $self = shift ;
- my $got = shift;
-
- $got->value('CRC32' => 1);
-
- if (! $got->parsed('Time') ) {
- # Modification time defaults to now.
- $got->value('Time' => time) ;
- }
-
- if (! $got->parsed('exTime') ) {
- my $timeRef = $got->value('exTime');
- if ( defined $timeRef) {
- return $self->saveErrorString(undef, "exTime not a 3-element array ref")
- if ref $timeRef ne 'ARRAY' || @$timeRef != 3;
- }
-
- $got->value("MTime", $timeRef->[1]);
- $got->value("ATime", $timeRef->[0]);
- $got->value("CTime", $timeRef->[2]);
- }
-
- *$self->{ZipData}{Zip64} = $got->value('Zip64');
- *$self->{ZipData}{Stream} = $got->value('Stream');
-
- return $self->saveErrorString(undef, "Zip64 only supported if Stream enabled")
- if *$self->{ZipData}{Zip64} && ! *$self->{ZipData}{Stream} ;
-
- my $method = $got->value('Method');
- return $self->saveErrorString(undef, "Unknown Method '$method'")
- if ! defined $ZIP_CM_MIN_VERSIONS{$method};
-
- return $self->saveErrorString(undef, "Bzip2 not available")
- if $method == ZIP_CM_BZIP2 and
- ! defined $IO::Compress::Adapter::Bzip2::VERSION;
-
- *$self->{ZipData}{Method} = $method;
-
- *$self->{ZipData}{ZipComment} = $got->value('ZipComment') ;
-
- for my $name (qw( ExtraFieldLocal ExtraFieldCentral ))
- {
- my $data = $got->value($name) ;
- if (defined $data) {
- my $bad = IO::Compress::Zlib::Extra::parseExtraField($data, 1, 0) ;
- return $self->saveErrorString(undef, "Error with $name Parameter: $bad")
- if $bad ;
-
- $got->value($name, $data) ;
- }
- }
-
- return undef
- if defined $IO::Compress::Bzip2::VERSION
- and ! IO::Compress::Bzip2::ckParams($self, $got);
-
- return 1 ;
- }
-
- #sub newHeader
- #{
- # my $self = shift ;
- #
- # return $self->mkHeader(*$self->{Got});
- #}
-
- sub getExtraParams
- {
- my $self = shift ;
-
- use IO::Compress::Base::Common 2.008 qw(:Parse);
- use Compress::Raw::Zlib 2.008 qw(Z_DEFLATED Z_DEFAULT_COMPRESSION Z_DEFAULT_STRATEGY);
-
- my @Bzip2 = ();
-
- @Bzip2 = IO::Compress::Bzip2::getExtraParams($self)
- if defined $IO::Compress::Bzip2::VERSION;
-
- return (
- # zlib behaviour
- $self->getZlibParams(),
-
- 'Stream' => [1, 1, Parse_boolean, 1],
- #'Store' => [0, 1, Parse_boolean, 0],
- 'Method' => [0, 1, Parse_unsigned, ZIP_CM_DEFLATE],
-
- # # Zip header fields
- 'Minimal' => [0, 1, Parse_boolean, 0],
- 'Zip64' => [0, 1, Parse_boolean, 0],
- 'Comment' => [0, 1, Parse_any, ''],
- 'ZipComment'=> [0, 1, Parse_any, ''],
- 'Name' => [0, 1, Parse_any, ''],
- 'Time' => [0, 1, Parse_any, undef],
- 'exTime' => [0, 1, Parse_any, undef],
- 'ExtAttr' => [0, 1, Parse_any, 0],
- 'OS_Code' => [0, 1, Parse_unsigned, $Compress::Raw::Zlib::gzip_os_code],
-
- 'TextFlag' => [0, 1, Parse_boolean, 0],
- 'ExtraFieldLocal' => [0, 1, Parse_any, undef],
- 'ExtraFieldCentral'=> [0, 1, Parse_any, undef],
-
- @Bzip2,
- );
- }
-
- sub getInverseClass
- {
- return ('IO::Uncompress::Unzip',
- \$IO::Uncompress::Unzip::UnzipError);
- }
-
- sub getFileInfo
- {
- my $self = shift ;
- my $params = shift;
- my $filename = shift ;
-
- my ($mode, $uid, $gid, $atime, $mtime, $ctime)
- = (stat($filename))[2, 4,5, 8,9,10] ;
-
- $params->value('Name' => $filename)
- if ! $params->parsed('Name') ;
-
- $params->value('Time' => $mtime)
- if ! $params->parsed('Time') ;
-
- if ( ! $params->parsed('exTime'))
- {
- $params->value('MTime' => $mtime) ;
- $params->value('ATime' => $atime) ;
- $params->value('CTime' => undef) ; # No Creation time
- }
-
- $params->value('ExtAttr' => $mode << 16)
- if ! $params->parsed('ExtAttr');
-
- $params->value('UID' => $uid) ;
- $params->value('GID' => $gid) ;
-
- }
-
- sub mkExtendedTime
- {
- # order expected is m, a, c
-
- my $times = '';
- my $bit = 1 ;
- my $flags = 0;
-
- for my $time (@_)
- {
- if (defined $time)
- {
- $flags |= $bit;
- $times .= pack("V", $time);
- }
-
- $bit <<= 1 ;
- }
-
- return IO::Compress::Zlib::Extra::mkSubField(ZIP_EXTRA_ID_EXT_TIMESTAMP,
- pack("C", $flags) . $times);
- }
-
- sub mkUnix2Extra
- {
- my $ids = '';
- for my $id (@_)
- {
- $ids .= pack("v", $id);
- }
-
- return IO::Compress::Zlib::Extra::mkSubField(ZIP_EXTRA_ID_INFO_ZIP_UNIX2,
- $ids);
- }
-
-
- # from Archive::Zip
- sub _unixToDosTime # Archive::Zip::Member
- {
- my $time_t = shift;
- # TODO - add something to cope with unix time < 1980
- my ( $sec, $min, $hour, $mday, $mon, $year ) = localtime($time_t);
- my $dt = 0;
- $dt += ( $sec >> 1 );
- $dt += ( $min << 5 );
- $dt += ( $hour << 11 );
- $dt += ( $mday << 16 );
- $dt += ( ( $mon + 1 ) << 21 );
- $dt += ( ( $year - 80 ) << 25 );
- return $dt;
- }
-
- 1;
-
- __END__
-
- =head1 NAME
-
-
-
- IO::Compress::Zip - Write zip files/buffers
-
-
-
- =head1 SYNOPSIS
-
- use IO::Compress::Zip qw(zip $ZipError) ;
-
-
- my $status = zip $input => $output [,OPTS]
- or die "zip failed: $ZipError\n";
-
- my $z = new IO::Compress::Zip $output [,OPTS]
- or die "zip failed: $ZipError\n";
-
- $z->print($string);
- $z->printf($format, $string);
- $z->write($string);
- $z->syswrite($string [, $length, $offset]);
- $z->flush();
- $z->tell();
- $z->eof();
- $z->seek($position, $whence);
- $z->binmode();
- $z->fileno();
- $z->opened();
- $z->autoflush();
- $z->input_line_number();
- $z->newStream( [OPTS] );
-
- $z->deflateParams();
-
- $z->close() ;
-
- $ZipError ;
-
- # IO::File mode
-
- print $z $string;
- printf $z $format, $string;
- tell $z
- eof $z
- seek $z, $position, $whence
- binmode $z
- fileno $z
- close $z ;
-
-
- =head1 DESCRIPTION
-
-
- This module provides a Perl interface that allows writing zip
- compressed data to files or buffer.
-
-
-
-
-
-
-
-
-
- The primary purpose of this module is to provide streaming write access to
- zip files and buffers. It is not a general-purpose file archiver. If that
- is what you want, check out C<Archive::Zip>.
-
- At present three compression methods are supported by IO::Compress::Zip,
- namely Store (no compression at all), Deflate and Bzip2.
-
- Note that to create Bzip2 content, the module C<IO::Compress::Bzip2> must
- be installed.
-
-
-
-
- For reading zip files/buffers, see the companion module
- L<IO::Uncompress::Unzip|IO::Uncompress::Unzip>.
-
-
- =head1 Functional Interface
-
- A top-level function, C<zip>, is provided to carry out
- "one-shot" compression between buffers and/or files. For finer
- control over the compression process, see the L</"OO Interface">
- section.
-
- use IO::Compress::Zip qw(zip $ZipError) ;
-
- zip $input => $output [,OPTS]
- or die "zip failed: $ZipError\n";
-
-
-
- The functional interface needs Perl5.005 or better.
-
-
- =head2 zip $input => $output [, OPTS]
-
-
- C<zip> expects at least two parameters, C<$input> and C<$output>.
-
- =head3 The C<$input> parameter
-
- The parameter, C<$input>, is used to define the source of
- the uncompressed data.
-
- It can take one of the following forms:
-
- =over 5
-
- =item A filename
-
- If the C<$input> parameter is a simple scalar, it is assumed to be a
- filename. This file will be opened for reading and the input data
- will be read from it.
-
- =item A filehandle
-
- If the C<$input> parameter is a filehandle, the input data will be
- read from it.
- The string '-' can be used as an alias for standard input.
-
- =item A scalar reference
-
- If C<$input> is a scalar reference, the input data will be read
- from C<$$input>.
-
- =item An array reference
-
- If C<$input> is an array reference, each element in the array must be a
- filename.
-
- The input data will be read from each file in turn.
-
- The complete array will be walked to ensure that it only
- contains valid filenames before any data is compressed.
-
-
-
- =item An Input FileGlob string
-
- If C<$input> is a string that is delimited by the characters "<" and ">"
- C<zip> will assume that it is an I<input fileglob string>. The
- input is the list of files that match the fileglob.
-
- If the fileglob does not match any files ...
-
- See L<File::GlobMapper|File::GlobMapper> for more details.
-
-
- =back
-
- If the C<$input> parameter is any other type, C<undef> will be returned.
-
-
- In addition, if C<$input> is a simple filename, the default values for
- the C<Name>, C<Time>, C<ExtAttr> and C<exTime> options will be sourced from that file.
-
- If you do not want to use these defaults they can be overridden by
- explicitly setting the C<Name>, C<Time>, C<ExtAttr> and C<exTime> options or by setting the
- C<Minimal> parameter.
-
-
-
- =head3 The C<$output> parameter
-
- The parameter C<$output> is used to control the destination of the
- compressed data. This parameter can take one of these forms.
-
- =over 5
-
- =item A filename
-
- If the C<$output> parameter is a simple scalar, it is assumed to be a
- filename. This file will be opened for writing and the compressed
- data will be written to it.
-
- =item A filehandle
-
- If the C<$output> parameter is a filehandle, the compressed data
- will be written to it.
- The string '-' can be used as an alias for standard output.
-
-
- =item A scalar reference
-
- If C<$output> is a scalar reference, the compressed data will be
- stored in C<$$output>.
-
-
-
- =item An Array Reference
-
- If C<$output> is an array reference, the compressed data will be
- pushed onto the array.
-
- =item An Output FileGlob
-
- If C<$output> is a string that is delimited by the characters "<" and ">"
- C<zip> will assume that it is an I<output fileglob string>. The
- output is the list of files that match the fileglob.
-
- When C<$output> is an fileglob string, C<$input> must also be a fileglob
- string. Anything else is an error.
-
- =back
-
- If the C<$output> parameter is any other type, C<undef> will be returned.
-
-
-
- =head2 Notes
-
-
-
- When C<$input> maps to multiple files/buffers and C<$output> is a single
- file/buffer the input files/buffers will each be stored
- in C<$output> as a distinct entry.
-
-
-
-
-
-
- =head2 Optional Parameters
-
- Unless specified below, the optional parameters for C<zip>,
- C<OPTS>, are the same as those used with the OO interface defined in the
- L</"Constructor Options"> section below.
-
- =over 5
-
- =item C<< AutoClose => 0|1 >>
-
- This option applies to any input or output data streams to
- C<zip> that are filehandles.
-
- If C<AutoClose> is specified, and the value is true, it will result in all
- input and/or output filehandles being closed once C<zip> has
- completed.
-
- This parameter defaults to 0.
-
-
- =item C<< BinModeIn => 0|1 >>
-
- When reading from a file or filehandle, set C<binmode> before reading.
-
- Defaults to 0.
-
-
-
-
-
- =item C<< Append => 0|1 >>
-
- TODO
-
-
-
- =back
-
-
-
- =head2 Examples
-
- To read the contents of the file C<file1.txt> and write the compressed
- data to the file C<file1.txt.zip>.
-
- use strict ;
- use warnings ;
- use IO::Compress::Zip qw(zip $ZipError) ;
-
- my $input = "file1.txt";
- zip $input => "$input.zip"
- or die "zip failed: $ZipError\n";
-
-
- To read from an existing Perl filehandle, C<$input>, and write the
- compressed data to a buffer, C<$buffer>.
-
- use strict ;
- use warnings ;
- use IO::Compress::Zip qw(zip $ZipError) ;
- use IO::File ;
-
- my $input = new IO::File "<file1.txt"
- or die "Cannot open 'file1.txt': $!\n" ;
- my $buffer ;
- zip $input => \$buffer
- or die "zip failed: $ZipError\n";
-
- To compress all files in the directory "/my/home" that match "*.txt"
- and store the compressed data in the same directory
-
- use strict ;
- use warnings ;
- use IO::Compress::Zip qw(zip $ZipError) ;
-
- zip '</my/home/*.txt>' => '<*.zip>'
- or die "zip failed: $ZipError\n";
-
- and if you want to compress each file one at a time, this will do the trick
-
- use strict ;
- use warnings ;
- use IO::Compress::Zip qw(zip $ZipError) ;
-
- for my $input ( glob "/my/home/*.txt" )
- {
- my $output = "$input.zip" ;
- zip $input => $output
- or die "Error compressing '$input': $ZipError\n";
- }
-
-
- =head1 OO Interface
-
- =head2 Constructor
-
- The format of the constructor for C<IO::Compress::Zip> is shown below
-
- my $z = new IO::Compress::Zip $output [,OPTS]
- or die "IO::Compress::Zip failed: $ZipError\n";
-
- It returns an C<IO::Compress::Zip> object on success and undef on failure.
- The variable C<$ZipError> will contain an error message on failure.
-
- If you are running Perl 5.005 or better the object, C<$z>, returned from
- IO::Compress::Zip can be used exactly like an L<IO::File|IO::File> filehandle.
- This means that all normal output file operations can be carried out
- with C<$z>.
- For example, to write to a compressed file/buffer you can use either of
- these forms
-
- $z->print("hello world\n");
- print $z "hello world\n";
-
- The mandatory parameter C<$output> is used to control the destination
- of the compressed data. This parameter can take one of these forms.
-
- =over 5
-
- =item A filename
-
- If the C<$output> parameter is a simple scalar, it is assumed to be a
- filename. This file will be opened for writing and the compressed data
- will be written to it.
-
- =item A filehandle
-
- If the C<$output> parameter is a filehandle, the compressed data will be
- written to it.
- The string '-' can be used as an alias for standard output.
-
-
- =item A scalar reference
-
- If C<$output> is a scalar reference, the compressed data will be stored
- in C<$$output>.
-
- =back
-
- If the C<$output> parameter is any other type, C<IO::Compress::Zip>::new will
- return undef.
-
- =head2 Constructor Options
-
- C<OPTS> is any combination of the following options:
-
- =over 5
-
- =item C<< AutoClose => 0|1 >>
-
- This option is only valid when the C<$output> parameter is a filehandle. If
- specified, and the value is true, it will result in the C<$output> being
- closed once either the C<close> method is called or the C<IO::Compress::Zip>
- object is destroyed.
-
- This parameter defaults to 0.
-
- =item C<< Append => 0|1 >>
-
- Opens C<$output> in append mode.
-
- The behaviour of this option is dependent on the type of C<$output>.
-
- =over 5
-
- =item * A Buffer
-
- If C<$output> is a buffer and C<Append> is enabled, all compressed data
- will be append to the end if C<$output>. Otherwise C<$output> will be
- cleared before any data is written to it.
-
- =item * A Filename
-
- If C<$output> is a filename and C<Append> is enabled, the file will be
- opened in append mode. Otherwise the contents of the file, if any, will be
- truncated before any compressed data is written to it.
-
- =item * A Filehandle
-
- If C<$output> is a filehandle, the file pointer will be positioned to the
- end of the file via a call to C<seek> before any compressed data is written
- to it. Otherwise the file pointer will not be moved.
-
- =back
-
- This parameter defaults to 0.
-
-
-
- =item C<< Name => $string >>
-
- Stores the contents of C<$string> in the zip filename header field. If
- C<Name> is not specified, no zip filename field will be created.
-
- =item C<< Time => $number >>
-
- Sets the last modified time field in the zip header to $number.
-
- This field defaults to the time the C<IO::Compress::Zip> object was created
- if this option is not specified.
-
- =item C<< ExtAttr => $attr >>
-
- This option controls the "external file attributes" field in the central
- header of the zip file. This is a 4 byte field.
-
- This option defaults to 0.
-
- =item C<< exTime => [$atime, $mtime, $ctime] >>
-
- This option expects an array reference with exactly three elements:
- C<$atime>, C<mtime> and C<$ctime>. These correspond to the last access
- time, last modification time and creation time respectively.
-
- It uses these values to set the extended timestamp field in the local zip
- header to the three values, $atime, $mtime, $ctime and sets the extended
- timestamp field in the central zip header to C<$mtime>.
-
- If any of the three values is C<undef> that time value will not be used.
- So, for example, to set only the C<$mtime> you would use this
-
- exTime => [undef, $mtime, undef]
-
- If the C<Minimal> option is set to true, this option will be ignored.
-
- By default no extended time field is created.
-
- =item C<< Comment => $comment >>
-
- Stores the contents of C<$comment> in the Central File Header of
- the zip file.
-
- By default, no comment field is written to the zip file.
-
- =item C<< ZipComment => $comment >>
-
- Stores the contents of C<$comment> in the End of Central Directory record
- of the zip file.
-
- By default, no comment field is written to the zip file.
-
- =item C<< Method => $method >>
-
- Controls which compression method is used. At present three compression
- methods are supported, namely Store (no compression at all), Deflate and
- Bzip2.
-
- The symbols, ZIP_CM_STORE, ZIP_CM_DEFLATE and ZIP_CM_BZIP2 are used to
- select the compression method.
-
- These constants are not imported by C<IO::Compress::Zip> by default.
-
- use IO::Compress::Zip qw(:zip_method);
- use IO::Compress::Zip qw(:constants);
- use IO::Compress::Zip qw(:all);
-
- Note that to create Bzip2 content, the module C<IO::Compress::Bzip2> must
- be installed. A fatal error will be thrown if you attempt to create Bzip2
- content when C<IO::Compress::Bzip2> is not available.
-
- The default method is ZIP_CM_DEFLATE.
-
- =item C<< Stream => 0|1 >>
-
- This option controls whether the zip file/buffer output is created in
- streaming mode.
-
- Note that when outputting to a file with streaming mode disabled (C<Stream>
- is 0), the output file must be seekable.
-
- The default is 1.
-
- =item C<< Zip64 => 0|1 >>
-
- Create a Zip64 zip file/buffer. This option should only be used if you want
- to store files larger than 4 Gig.
-
- If you intend to manipulate the Zip64 zip files created with this module
- using an external zip/unzip make sure that it supports streaming Zip64.
-
- In particular, if you are using Info-Zip you need to have zip version 3.x
- or better to update a Zip64 archive and unzip version 6.x to read a zip64
- archive. At the time of writing both are beta status.
-
- When the C<Zip64> option is enabled, the C<Stream> option I<must> be
- enabled as well.
-
- The default is 0.
-
- =item C<< TextFlag => 0|1 >>
-
- This parameter controls the setting of a bit in the zip central header. It
- is used to signal that the data stored in the zip file/buffer is probably
- text.
-
- The default is 0.
-
- =item C<< ExtraFieldLocal => $data >>
- =item C<< ExtraFieldCentral => $data >>
-
- These options allows additional metadata to be stored in the local and
- central headers in the zip file/buffer.
-
- An extra field consists of zero or more subfields. Each subfield consists
- of a two byte header followed by the subfield data.
-
- The list of subfields can be supplied in any of the following formats
-
- ExtraFieldLocal => [$id1, $data1,
- $id2, $data2,
- ...
- ]
-
- ExtraFieldLocal => [ [$id1 => $data1],
- [$id2 => $data2],
- ...
- ]
-
- ExtraFieldLocal => { $id1 => $data1,
- $id2 => $data2,
- ...
- }
-
- Where C<$id1>, C<$id2> are two byte subfield ID's.
-
- If you use the hash syntax, you have no control over the order in which
- the ExtraSubFields are stored, plus you cannot have SubFields with
- duplicate ID.
-
- Alternatively the list of subfields can by supplied as a scalar, thus
-
- ExtraField => $rawdata
-
- The Extended Time field, set using the C<exTime> option, is an example of
- an extended field.
-
-
-
- If the C<Minimal> option is set to true, this option will be ignored.
-
- The maximum size of an extra field 65535 bytes.
-
- =item C<< Minimal => 1|0 >>
-
- If specified, this option will disable the creation of all extended fields
- in the zip local and central headers. So the C<exTime>, C<ExtraFieldLocal>
- and C<ExtraFieldCentral> options will be ignored.
-
- This parameter defaults to 0.
-
- =item C<< BlockSize100K => number >>
-
- Specify the number of 100K blocks bzip2 uses during compression.
-
- Valid values are from 1 to 9, where 9 is best compression.
-
- This option is only valid if the C<Method> is ZIP_CM_BZIP2. It is ignored
- otherwise.
-
- The default is 1.
-
- =item C<< WorkFactor => number >>
-
- Specifies how much effort bzip2 should take before resorting to a slower
- fallback compression algorithm.
-
- Valid values range from 0 to 250, where 0 means use the default value 30.
-
- This option is only valid if the C<Method> is ZIP_CM_BZIP2. It is ignored
- otherwise.
-
- The default is 0.
-
-
-
-
- =item -Level
-
- Defines the compression level used by zlib. The value should either be
- a number between 0 and 9 (0 means no compression and 9 is maximum
- compression), or one of the symbolic constants defined below.
-
- Z_NO_COMPRESSION
- Z_BEST_SPEED
- Z_BEST_COMPRESSION
- Z_DEFAULT_COMPRESSION
-
- The default is Z_DEFAULT_COMPRESSION.
-
- Note, these constants are not imported by C<IO::Compress::Zip> by default.
-
- use IO::Compress::Zip qw(:strategy);
- use IO::Compress::Zip qw(:constants);
- use IO::Compress::Zip qw(:all);
-
- =item -Strategy
-
- Defines the strategy used to tune the compression. Use one of the symbolic
- constants defined below.
-
- Z_FILTERED
- Z_HUFFMAN_ONLY
- Z_RLE
- Z_FIXED
- Z_DEFAULT_STRATEGY
-
- The default is Z_DEFAULT_STRATEGY.
-
-
-
-
-
-
- =item C<< Strict => 0|1 >>
-
-
-
- This is a placeholder option.
-
-
-
- =back
-
- =head2 Examples
-
- TODO
-
- =head1 Methods
-
- =head2 print
-
- Usage is
-
- $z->print($data)
- print $z $data
-
- Compresses and outputs the contents of the C<$data> parameter. This
- has the same behaviour as the C<print> built-in.
-
- Returns true if successful.
-
- =head2 printf
-
- Usage is
-
- $z->printf($format, $data)
- printf $z $format, $data
-
- Compresses and outputs the contents of the C<$data> parameter.
-
- Returns true if successful.
-
- =head2 syswrite
-
- Usage is
-
- $z->syswrite $data
- $z->syswrite $data, $length
- $z->syswrite $data, $length, $offset
-
- Compresses and outputs the contents of the C<$data> parameter.
-
- Returns the number of uncompressed bytes written, or C<undef> if
- unsuccessful.
-
- =head2 write
-
- Usage is
-
- $z->write $data
- $z->write $data, $length
- $z->write $data, $length, $offset
-
- Compresses and outputs the contents of the C<$data> parameter.
-
- Returns the number of uncompressed bytes written, or C<undef> if
- unsuccessful.
-
- =head2 flush
-
- Usage is
-
-
- $z->flush;
- $z->flush($flush_type);
-
-
- Flushes any pending compressed data to the output file/buffer.
-
-
- This method takes an optional parameter, C<$flush_type>, that controls
- how the flushing will be carried out. By default the C<$flush_type>
- used is C<Z_FINISH>. Other valid values for C<$flush_type> are
- C<Z_NO_FLUSH>, C<Z_SYNC_FLUSH>, C<Z_FULL_FLUSH> and C<Z_BLOCK>. It is
- strongly recommended that you only set the C<flush_type> parameter if
- you fully understand the implications of what it does - overuse of C<flush>
- can seriously degrade the level of compression achieved. See the C<zlib>
- documentation for details.
-
-
- Returns true on success.
-
-
- =head2 tell
-
- Usage is
-
- $z->tell()
- tell $z
-
- Returns the uncompressed file offset.
-
- =head2 eof
-
- Usage is
-
- $z->eof();
- eof($z);
-
-
-
- Returns true if the C<close> method has been called.
-
-
-
- =head2 seek
-
- $z->seek($position, $whence);
- seek($z, $position, $whence);
-
-
-
-
- Provides a sub-set of the C<seek> functionality, with the restriction
- that it is only legal to seek forward in the output file/buffer.
- It is a fatal error to attempt to seek backward.
-
- Empty parts of the file/buffer will have NULL (0x00) bytes written to them.
-
-
-
- The C<$whence> parameter takes one the usual values, namely SEEK_SET,
- SEEK_CUR or SEEK_END.
-
- Returns 1 on success, 0 on failure.
-
- =head2 binmode
-
- Usage is
-
- $z->binmode
- binmode $z ;
-
- This is a noop provided for completeness.
-
- =head2 opened
-
- $z->opened()
-
- Returns true if the object currently refers to a opened file/buffer.
-
- =head2 autoflush
-
- my $prev = $z->autoflush()
- my $prev = $z->autoflush(EXPR)
-
- If the C<$z> object is associated with a file or a filehandle, this method
- returns the current autoflush setting for the underlying filehandle. If
- C<EXPR> is present, and is non-zero, it will enable flushing after every
- write/print operation.
-
- If C<$z> is associated with a buffer, this method has no effect and always
- returns C<undef>.
-
- B<Note> that the special variable C<$|> B<cannot> be used to set or
- retrieve the autoflush setting.
-
- =head2 input_line_number
-
- $z->input_line_number()
- $z->input_line_number(EXPR)
-
-
- This method always returns C<undef> when compressing.
-
-
-
- =head2 fileno
-
- $z->fileno()
- fileno($z)
-
- If the C<$z> object is associated with a file or a filehandle, this method
- will return the underlying file descriptor.
-
- If the C<$z> object is is associated with a buffer, this method will
- return undef.
-
- =head2 close
-
- $z->close() ;
- close $z ;
-
-
-
- Flushes any pending compressed data and then closes the output file/buffer.
-
-
-
- For most versions of Perl this method will be automatically invoked if
- the IO::Compress::Zip object is destroyed (either explicitly or by the
- variable with the reference to the object going out of scope). The
- exceptions are Perl versions 5.005 through 5.00504 and 5.8.0. In
- these cases, the C<close> method will be called automatically, but
- not until global destruction of all live objects when the program is
- terminating.
-
- Therefore, if you want your scripts to be able to run on all versions
- of Perl, you should call C<close> explicitly and not rely on automatic
- closing.
-
- Returns true on success, otherwise 0.
-
- If the C<AutoClose> option has been enabled when the IO::Compress::Zip
- object was created, and the object is associated with a file, the
- underlying file will also be closed.
-
-
-
-
- =head2 newStream([OPTS])
-
- Usage is
-
- $z->newStream( [OPTS] )
-
- Closes the current compressed data stream and starts a new one.
-
- OPTS consists of any of the the options that are available when creating
- the C<$z> object.
-
- See the L</"Constructor Options"> section for more details.
-
-
- =head2 deflateParams
-
- Usage is
-
- $z->deflateParams
-
- TODO
-
-
- =head1 Importing
-
-
- A number of symbolic constants are required by some methods in
- C<IO::Compress::Zip>. None are imported by default.
-
-
-
- =over 5
-
- =item :all
-
-
- Imports C<zip>, C<$ZipError> and all symbolic
- constants that can be used by C<IO::Compress::Zip>. Same as doing this
-
- use IO::Compress::Zip qw(zip $ZipError :constants) ;
-
- =item :constants
-
- Import all symbolic constants. Same as doing this
-
-
- use IO::Compress::Zip qw(:flush :level :strategy :zip_method) ;
-
-
- =item :flush
-
- These symbolic constants are used by the C<flush> method.
-
- Z_NO_FLUSH
- Z_PARTIAL_FLUSH
- Z_SYNC_FLUSH
- Z_FULL_FLUSH
- Z_FINISH
- Z_BLOCK
-
- =item :level
-
- These symbolic constants are used by the C<Level> option in the constructor.
-
- Z_NO_COMPRESSION
- Z_BEST_SPEED
- Z_BEST_COMPRESSION
- Z_DEFAULT_COMPRESSION
-
-
- =item :strategy
-
- These symbolic constants are used by the C<Strategy> option in the constructor.
-
- Z_FILTERED
- Z_HUFFMAN_ONLY
- Z_RLE
- Z_FIXED
- Z_DEFAULT_STRATEGY
-
-
- =item :zip_method
-
- These symbolic constants are used by the C<Method> option in the
- constructor.
-
- ZIP_CM_STORE
- ZIP_CM_DEFLATE
- ZIP_CM_BZIP2
-
-
-
-
- =back
-
- For
-
- =head1 EXAMPLES
-
- TODO
-
-
-
-
-
-
-
-
-
-
-
- =head1 SEE ALSO
-
- L<Compress::Zlib>, L<IO::Compress::Gzip>, L<IO::Uncompress::Gunzip>, L<IO::Compress::Deflate>, L<IO::Uncompress::Inflate>, L<IO::Compress::RawDeflate>, L<IO::Uncompress::RawInflate>, L<IO::Compress::Bzip2>, L<IO::Uncompress::Bunzip2>, L<IO::Compress::Lzop>, L<IO::Uncompress::UnLzop>, L<IO::Compress::Lzf>, L<IO::Uncompress::UnLzf>, L<IO::Uncompress::AnyInflate>, L<IO::Uncompress::AnyUncompress>
-
- L<Compress::Zlib::FAQ|Compress::Zlib::FAQ>
-
- L<File::GlobMapper|File::GlobMapper>, L<Archive::Zip|Archive::Zip>,
- L<Archive::Tar|Archive::Tar>,
- L<IO::Zlib|IO::Zlib>
-
-
- For RFC 1950, 1951 and 1952 see
- F<http://www.faqs.org/rfcs/rfc1950.html>,
- F<http://www.faqs.org/rfcs/rfc1951.html> and
- F<http://www.faqs.org/rfcs/rfc1952.html>
-
- The I<zlib> compression library was written by Jean-loup Gailly
- F<gzip@prep.ai.mit.edu> and Mark Adler F<madler@alumni.caltech.edu>.
-
- The primary site for the I<zlib> compression library is
- F<http://www.zlib.org>.
-
- The primary site for gzip is F<http://www.gzip.org>.
-
-
-
-
- =head1 AUTHOR
-
- This module was written by Paul Marquess, F<pmqs@cpan.org>.
-
-
-
- =head1 MODIFICATION HISTORY
-
- See the Changes file.
-
- =head1 COPYRIGHT AND LICENSE
-
- Copyright (c) 2005-2007 Paul Marquess. All rights reserved.
-
- This program is free software; you can redistribute it and/or
- modify it under the same terms as Perl itself.
-
-
-