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idn(1) [debian man page]

IDN(1)								   User Commands							    IDN(1)

NAME

       idn - Internationalized Domain Names command line tool

SYNOPSIS

       idn [OPTION]... [STRINGS]...

DESCRIPTION

       Internationalized Domain Name (IDN) convert STRINGS, or standard input.

       Command line interface to the internationalized domain name library.

       All  strings are expected to be encoded in the preferred charset used by your locale.  Use `--debug' to find out what this charset is.  You
       can override the charset used by setting environment variable CHARSET.

       To process a string that starts with `-', for example `-foo', use `--' to signal the end of parameters, as in `idn --quiet -a -- -foo'.

       Mandatory arguments to long options are mandatory for short options too.

       -h, --help
	      Print help and exit

       -V, --version
	      Print version and exit

       -s, --stringprep
	      Prepare string according to nameprep profile

       -d, --punycode-decode
	      Decode Punycode

       -e, --punycode-encode
	      Encode Punycode

       -a, --idna-to-ascii
	      Convert to ACE according to IDNA (default mode)

       -u, --idna-to-unicode
	      Convert from ACE according to IDNA

       --allow-unassigned
	      Toggle IDNA AllowUnassigned flag (default off)

       --usestd3asciirules
	      Toggle IDNA UseSTD3ASCIIRules flag (default off)

       --no-tld
	      Don't check string for TLD specific rules Only for --idna-to-ascii and --idna-to-unicode

       -n, --nfkc
	      Normalize string according to Unicode v3.2 NFKC

       -p, --profile=STRING
	      Use specified stringprep profile instead Valid stringprep profiles: `Nameprep', `iSCSI', `Nodeprep', `Resourceprep', `trace', `SASL-
	      prep'

       --debug
	      Print debugging information

       --quiet
	      Silent operation

AUTHOR

       Written by Simon Josefsson.

REPORTING BUGS

       Report bugs to: bug-libidn@gnu.org
       GNU Libidn home page: <http://www.gnu.org/software/libidn/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2012 Simon Josefsson.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The  full  documentation  for idn is maintained as a Texinfo manual.  If the info and idn programs are properly installed at your site, the
       command

	      info idn

       should give you access to the complete manual.

idn 1.25							     May 2012								    IDN(1)

Check Out this Related Man Page

IDNA::Punycode(3pm)					User Contributed Perl Documentation				       IDNA::Punycode(3pm)

NAME

       IDNA::Punycode - encodes Unicode string in Punycode

SYNOPSIS

	 use IDNA::Punycode;
	 idn_prefix('xn--');
	 $punycode = encode_punycode($unicode);
	 $unicode  = decode_punycode($punycode);

DESCRIPTION

       IDNA::Punycode is a module to encode / decode Unicode strings into Punycode, an efficient encoding of Unicode for use with IDNA.

       This module requires Perl 5.6.0 or over to handle UTF8 flagged Unicode strings.

FUNCTIONS

       This module exports following functions by default.

       encode_punycode
	     $punycode = encode_punycode($unicode);

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

       decode_punycode
	     $unicode = decode_punycode($punycode)

	   takes Punycode encoding and returns original Unicode string.

       idn_prefix
	     idn_prefix($prefix);

	   causes encode_punycode() to add $prefix to ACE-string after conversion.  As a side-effect decode_punycode() will only consider strings
	   beginning with $prefix as punycode representations.

	   According to RFC 3490 the ACE prefix "xn--" had been chosen as the standard.  Thus, "xn--" is also the default ACE prefix.  For compat-
	   ibility I'm leaving idn_prefix() in the module.  Use "idn_prefix(undef)" to get the old behaviour.

       These functions throws exceptionsn on failure. You can catch 'em via "eval".

AUTHORS

       Tatsuhiko Miyagawa <miyagawa@bulknews.net> is the original author and wrote almost all the code.

       Robert Urban <urban@UNIX-Beratung.de> added "idn_prefix()".

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

SEE ALSO

       http://www.ietf.org/internet-drafts/draft-ietf-idn-punycode-01.txt

       Encode::Punycode

perl v5.8.8							    2005-09-01						       IDNA::Punycode(3pm)
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