MIME::Decoder::Base64(3) User Contributed Perl Documentation MIME::Decoder::Base64(3)NAME
MIME::Decoder::Base64 - encode/decode a "base64" stream
SYNOPSIS
A generic decoder object; see MIME::Decoder for usage.
DESCRIPTION
A MIME::Decoder subclass for the "base64" encoding. The name was chosen to jibe with the pre-existing MIME::Base64 utility package, which
this class actually uses to translate each chunk.
o When decoding, the input is read one line at a time. The input accumulates in an internal buffer, which is decoded in
multiple-of-4-sized chunks (plus a possible "leftover" input chunk, of course).
o When encoding, the input is read 45 bytes at a time: this ensures that the output lines are not too long. We chose 45 since it is a
multiple of 3 and produces lines under 76 characters, as RFC 2045 specifies:
The encoded output stream must be represented in lines of no more
than 76 characters each.
SEE ALSO
MIME::Decoder
AUTHOR
Eryq (eryq@zeegee.com), ZeeGee Software Inc (http://www.zeegee.com).
All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.18.2 2013-11-14 MIME::Decoder::Base64(3)
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MIME::Base64::URLSafe(3pm) User Contributed Perl Documentation MIME::Base64::URLSafe(3pm)NAME
MIME::Base64::URLSafe - Perl version of Python's URL-safe base64 codec
SYNOPSIS
use MIME::Base64::URLSafe;
$encoded = urlsafe_b64encode('Alladdin: open sesame');
$decoded = urlsafe_b64decode($encoded);
DESCRIPTION
This module is a perl version of python's URL-safe base64 encoder / decoder.
When embedding binary data in URL, it is preferable to use base64 encoding. However, two characters ('+' and '/') used in the standard
base64 encoding have special meanings in URLs, often leading to re-encoding with URL-encoding, or worse, interoperability problems.
To overcome the problem, the module provides a variation of base64 codec compatible with python's urlsafe_b64encode / urlsafe_b64decode.
Modification rules from base64:
use '-' and '_' instead of '+' and '/'
no line feeds
no trailing equals (=)
The following functions are provided:
urlsafe_b64encode($str)
urlsafe_b64decode($str)
If you prefer not to import these routines to your namespace, you can call them as:
use MIME::Base64::URLSafe ();
$encoded = MIME::Base64::URLSafe::encode($decoded);
$decoded = MIME::Base64::URLSafe::decode($encoded);
SEE ALSO
MIME::Base64
Fore more discussion on using base64 encoding in URL applications, see: http://en.wikipedia.org/wiki/Base64#URL_Applications
AUTHOR
Kazuho Oku <kazuho ___at___ labs.cybozu.co.jp>
Copyright (C) 2006 Cybozu Labs, Inc.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.7 or,
at your option, any later version of Perl 5 you may have available.
perl v5.8.8 2006-01-05 MIME::Base64::URLSafe(3pm)
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