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Manual Reference Pages  -  BADGER::CODEC::CHAIN (3)

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NAME

Badger::Codec::Chain - encode/decode data using multiple codecs

CONTENTS

SYNOPSIS



    use Badger::Codec::Chain;
   
    # compact form
    my $codec = Badger::Codec::Chain->new(storable+base64);
   
    # explicit form
    my $codec = Badger::Codec::Chain->new(storable, base64);
   
    # encode/decode data using codec chain
    my $enc   = $codec->encode({ pi => 3.14, e => 2.718 });
    my $dec   = $codec->decode($encoded);



DESCRIPTION

This module implements a subclass of Badger::Codec which chains together any number of other codec modules.

METHODS

    new(@codecs)

Constructor method to create a new codec chain. The codecs can be specified by name or as references to Badger::Codec objects.



    # by name
    my $codec = Badger::Codec::Chain->new(storable, base64);
   
    # by object reference
    my $codec = Badger::Codec::Chain->new(
        Badger::Codec->codec(storable),
        Badger::Codec->codec(base64),
    );



You can also use the compact form where multiple codec names are separated by +.



    # compact form
    my $codec = Badger::Codec::Chain->new(storable+base64);



    encode($data)

Encodes the data referenced by the first argument using all the codecs in the chain.



    $encoded = $codec->encode($data);



    decode($html)

Decodes the encoded data passed as the first argument using all the codecs in the chain <B>in reverse orderB>.



    $decoded = $codec->decode($encoded);



encoder()

Returns a reference to a subroutine which performs the encoding operation.

decoder()

Returns a reference to a subroutine which performs the decoding operation.

INTERNAL METHODS

    coder(@coders)

Internal method to construct an encoder or decoder subroutine for a codec chain.

AUTHOR

Andy Wardley <http://wardley.org/>

COPYRIGHT

Copyright (C) 2005-2009 Andy Wardley. All rights reserved.

SEE ALSO

Badger::Codecs, Badger::Codec.
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perl v5.20.3 BADGER::CODEC::CHAIN (3) 2012-01-02

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