URI::_punycode(3) User Contributed Perl Documentation URI::_punycode(3)

URI::_punycode - encodes Unicode string in Punycode

use strict;
use warnings;
use utf8;

use URI::_punycode qw(encode_punycode decode_punycode);

# encode a unicode string
my $punycode = encode_punycode('http://☃.net'); # http://.net-xc8g
$punycode = encode_punycode('bücher'); # bcher-kva
$punycode = encode_punycode('他们为什么不说中文'); # ihqwcrb4cv8a8dqg056pqjye

# decode a punycode string back into a unicode string
my $unicode = decode_punycode('http://.net-xc8g'); # http://☃.net
$unicode = decode_punycode('bcher-kva'); # bücher
$unicode = decode_punycode('ihqwcrb4cv8a8dqg056pqjye'); # 他们为什么不说中文

URI::_punycode is a module to encode / decode Unicode strings into Punycode https://tools.ietf.org/html/rfc3492, an efficient encoding of Unicode for use with IDNA https://tools.ietf.org/html/rfc5890.

All functions throw exceptions on failure. You can "catch" them with Syntax::Keyword::Try or Try::Tiny. The following functions are exported by default.

my $punycode = encode_punycode('http://☃.net');  # http://.net-xc8g
$punycode = encode_punycode('bücher'); # bcher-kva
$punycode = encode_punycode('他们为什么不说中文') # ihqwcrb4cv8a8dqg056pqjye

Takes a Unicode string (UTF8-flagged variable) and returns a Punycode encoding for it.

my $unicode = decode_punycode('http://.net-xc8g'); # http://☃.net
$unicode = decode_punycode('bcher-kva'); # bücher
$unicode = decode_punycode('ihqwcrb4cv8a8dqg056pqjye'); # 他们为什么不说中文

Takes a Punycode encoding and returns original Unicode string.

Tatsuhiko Miyagawa <miyagawa@bulknews.net> is the author of IDNA::Punycode which was the basis for this module.

IDNA::Punycode, RFC 3492 https://tools.ietf.org/html/rfc3492, RFC 5891 https://tools.ietf.org/html/rfc5891

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
2021-03-03 perl v5.32.1