PerlIO::via::Bzip2.3pm

Langue: en

Version: 2005-03-04 (mandriva - 01/05/08)

Section: 3 (Bibliothèques de fonctions)

Sommaire

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

PerlIO::via, Compress::Bzip2

AUTHOR

Arjen Laarhoven, <arjen@cpan.org> 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.