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MIME::QuotedPrint.3pm
Langue: en
Version: 2010-05-13 (MeeGo - 06/11/10)
Section: 3 (Bibliothèques de fonctions)
NAME
MIME::QuotedPrint - Encoding and decoding of quoted-printable stringsSYNOPSIS
use MIME::QuotedPrint; $encoded = encode_qp($decoded); $decoded = decode_qp($encoded);
DESCRIPTION
This module provides functions to encode and decode strings into and from the quoted-printable encoding specified in RFC 2045 - MIME (Multipurpose Internet Mail Extensions). The quoted-printable encoding is intended to represent data that largely consists of bytes that correspond to printable characters in the ASCII character set. Each non-printable character (as defined by English Americans) is represented by a triplet consisting of the character ``='' followed by two hexadecimal digits.The following functions are provided:
- encode_qp($str)
- encode_qp($str, $eol)
- encode_qp($str, $eol, $binmode)
- This function returns an encoded version of the string ($str) given as argument.
The second argument ($eol) is the line-ending sequence to use. It is optional and defaults to ``\n''. Every occurrence of ``\n'' is replaced with this string, and it is also used for additional ``soft line breaks'' to ensure that no line end up longer than 76 characters. Pass it as ``\015\012'' to produce data suitable for external consumption. The string ``\r\n'' produces the same result on many platforms, but not all.
The third argument ($binmode) will select binary mode if passed as a TRUE value. In binary mode ``\n'' will be encoded in the same way as any other non-printable character. This ensures that a decoder will end up with exactly the same string whatever line ending sequence it uses. In general it is preferable to use the base64 encoding for binary data; see MIME::Base64.
An $eol of "`` (the empty string) is special. In this case, no ''soft line breaks`` are introduced and binary mode is effectively enabled so that any ''\n" in the original data is encoded as well.
- decode_qp($str);
- This function returns the plain text version of the string given as argument. The lines of the result are ``\n'' terminated, even if the $str argument contains ``\r\n'' terminated lines.
If you prefer not to import these routines into your namespace, you can call them as:
use MIME::QuotedPrint (); $encoded = MIME::QuotedPrint::encode($decoded); $decoded = MIME::QuotedPrint::decode($encoded);
Perl v5.8 and better allow extended Unicode characters in strings. Such strings cannot be encoded directly, as the quoted-printable encoding is only defined for single-byte characters. The solution is to use the Encode module to select the byte encoding you want. For example:
use MIME::QuotedPrint qw(encode_qp); use Encode qw(encode); $encoded = encode_qp(encode("UTF-8", "\x{FFFF}\n")); print $encoded;
COPYRIGHT
Copyright 1995-1997,2002-2004 Gisle Aas.This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
MIME::Base64Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre