URI::_punycode

Section: User Contributed Perl Documentation (3)
Updated: 2021-03-03
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NAME

URI::_punycode - encodes Unicode string in Punycode

SYNOPSIS

  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

DESCRIPTION

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>.

FUNCTIONS

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

encode_punycode

  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.

decode_punycode

  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.

AUTHOR

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

COPYRIGHT AND LICENSE

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.