# Mail::Message::TransferEnc::Base64 - encode/decode base64 message bodies - perldoc - [phpMan]

## NAME
    [Mail::Message::TransferEnc::Base64](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc%3A%3ABase64/markdown) - encode/decode base64 message bodies

## INHERITANCE
     [Mail::Message::TransferEnc::Base64](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc%3A%3ABase64/markdown)
       is a [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown)
       is a [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

## SYNOPSIS
     my [Mail::Message](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage/markdown) $msg = ...;
     my $decoded = $msg->decoded;
     my $encoded = $msg->encode(transfer => 'base64');

## DESCRIPTION
    Encode or decode message bodies with base64. The e-mail protocol and user agents can not handle
    binary data. Therefore, binary data -but even sometimes non-binary data- is encoded into ASCII,
    this is transportable.

    Base64 re-groups the bits of bytes, and maps them on characters. The data contains bytes of 8
    bits (an *octet*). These are repacked into groups of 6 bits, pointing in an array of characters
    containing "[A-Za-z0-9+/]". This way, three data bytes become 4 base64 bytes. The encoded data
    will be trailed by '=' characters to align on four bytes.

    Extends "DESCRIPTION" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown).

## METHODS
    Extends "METHODS" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown).

### Constructors
    Extends "Constructors" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown).

    [Mail::Message::TransferEnc::Base64](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc%3A%3ABase64/markdown)->new(%options)
        Inherited, see "Constructors" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

### The Encoder
    Extends "The Encoder" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown).

    [Mail::Message::TransferEnc::Base64](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc%3A%3ABase64/markdown)->addTransferEncoder($type, $class)
        Inherited, see "The Encoder" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown)

    $obj->create($type, %options)
        Inherited, see "The Encoder" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown)

    $obj->name()
        Inherited, see "The Encoder" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown)

### Encoding
    Extends "Encoding" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown).

    $obj->check($body, %options)
        Inherited, see "Encoding" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown)

    $obj->decode($body, %options)
         -Option     --Defined in                --Default
          result_type  [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown)  <type of source body>

        result_type => CLASS

    $obj->encode($body, %options)
        Inherited, see "Encoding" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown)

### Error handling
    Extends "Error handling" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown).

    $obj->AUTOLOAD()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->addReport($object)
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level, $callback] )
    [Mail::Message::TransferEnc::Base64](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc%3A%3ABase64/markdown)->defaultTrace( [$level]|[$loglevel, $tracelevel]|[$level,
    $callback] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->errors()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->log( [$level, [$strings]] )
    [Mail::Message::TransferEnc::Base64](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc%3A%3ABase64/markdown)->log( [$level, [$strings]] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->logPriority($level)
    [Mail::Message::TransferEnc::Base64](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc%3A%3ABase64/markdown)->logPriority($level)
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->logSettings()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->notImplemented()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->report( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->reportAll( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->trace( [$level] )
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

    $obj->warnings()
        Inherited, see "Error handling" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

### Cleanup
    Extends "Cleanup" in [Mail::Message::TransferEnc](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AMessage%3A%3ATransferEnc/markdown).

    $obj->DESTROY()
        Inherited, see "Cleanup" in [Mail::Reporter](https://www.chedong.com/phpMan.php/perldoc/Mail%3A%3AReporter/markdown)

## DIAGNOSTICS
    Warning: Base64 line length not padded on 4.
        While decoding base64 the data in a message body, a string was found which was not padded
        into a multiple of four bytes. This is illegal, and therefore this data is ignored.

    Error: Decoder for transfer encoding $type does not work: $@
        Compiling the required transfer encoding resulted in errors, which means that the decoder
        can not be used.

    Warning: No decoder for transfer encoding $type.
        A decoder for the specified type of transfer encoding is not implemented.

    Error: Package $package does not implement $method.
        Fatal error: the specific package (or one of its superclasses) does not implement this
        method where it should. This message means that some other related classes do implement this
        method however the class at hand does not. Probably you should investigate this and probably
        inform the author of the package.

## SEE ALSO
    This module is part of Mail-Message distribution version 3.015, built on December 11, 2023.
    Website: <http://perl.overmeer.net/CPAN/>

## LICENSE
    Copyrights 2001-2023 by [Mark Overmeer <<markov@cpan.org>>]. For other contributors see ChangeLog.

    This program is free software; you can redistribute it and/or modify it under the same terms as
    Perl itself. See <http://dev.perl.org/licenses/>