NAME
PerlIO::via::Bzip2 - PerlIO layer for Bzip2 (de)compression
SYNOPSIS
use PerlIO::via::Bzip2;
# or
use PerlIO::via::Bzip2 level => 9; # Maximum compression
# Read a bzip2 compressed file from disk.
open(my $fh, "<:via(Bzip2)", "compressed_file");
my $uncompressed_data = <$fh>;
# Compress data on-the-fly to a bzip2 compressed file on disk.
open(my $fh, ">:via(Bzip2)", "compressed_file");
print {$fh} $uncompressed_data;
# Set compression level
PerlIO::via::Bzip2->level(5);
open(my $fh, ">:via(Bzip2)", "compressed_file");
print {$fh} $uncompressed_data;DESCRIPTION
This module implements a PerlIO layer which will let you handle bzip2 compressed files transparently.
Class Methods
- level([$level])
-
level sets or returns the compression level of the bzip2 library. It ranges from 1 (least compression, most efficient memory use) to 9 (best compression, most memory usage).
This parameter can also be set during using library import, using
use PerlIO::via::Bzip2 level => $level.
BUGS
Using binmode() on an opened file for compression will pop (remove) the layer.
PREREQUISITES
This module requires Compress::Bzip2 version 1.03.
SEE ALSO
AUTHOR
Arjen Laarhoven, <arjen@cpan.org>
COPYRIGHT AND LICENSE
Copyright (C) 2005 by Arjen Laarhoven
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.