Net::IDN::UTS46(3pm)

1Net::IDN::UTS46(3pm)  User Contributed Perl Documentation Net::IDN::UTS46(3pm)
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NAME

6       Net::IDN::UTS46 - Unicode IDNA Compatibility Processing (UTS #46)
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SYNOPSIS

9         use Net::IDN:: ':all';
10         my $a = uts46_to_ascii("müller.example.org");
11         my $b = Net::IDN::UTS46::to_unicode('EXAMPLE.XN--11B5BS3A9AJ6G');
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13         $domain =~ m/\P{Net::IDN::UTS46::IsDisallowed} and die 'oops';
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DESCRIPTION

16       This module implements the Unicode Technical Standard #46 (Unicode IDNA
17       Compatibility Processing). UTS #46 is one variant of Internationalized
18       Domain Names (IDN), which aims to be compatible with domain names
19       registered under either IDNA2003 or IDNA2008.
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21       You should use this module if you want an exact implementation of the
22       UTS #46 specification.
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24       However, if you just want to convert domain names and don't care which
25       standard is used internally, you should use Net::IDN::Encode instead.
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FUNCTIONS

28       By default, this module does not export any subroutines. You may use
29       the ":all" tag to import everything.
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31       You can omit the 'uts46_' prefix when accessing the functions with a
32       full-qualified module name (e.g. you can access "uts46_to_unicode" as
33       "Net::IDN::UTS46::uts46_to_unicode" or "Net::IDN::UTS46::to_unicode".
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35       The following functions are available:
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37       uts46_to_ascii( $domain, %param )
38           Implements the "ToASCII" function from UTS #46, section 4.2. It
39           converts a domain name to ASCII and throws an exception on invalid
40           input.
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42           This function takes the following optional parameters (%param):
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44           AllowUnassigned
45               (boolean) If set to a true value, unassigned code points in the
46               label are allowed. This is an extension over UTS #46.
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48               The default is false.
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50           UseSTD3ASCIIRules
51               (boolean) If set to a true value, checks the label for
52               compliance with STD 3 (RFC 1123) syntax for host name parts.
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54               The default is true.
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56           TransitionalProcessing
57               (boolean) If set to true, the conversion will be compatible
58               with IDNA2003. This only affects four characters: 'ß' (U+00DF),
59               'ς' (U+03C2), ZWJ (U+200D) and ZWNJ (U+200C). Usually, you will
60               want to set this to false.
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62               The default is false.
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64       uts46_to_unicode( $label, %param )
65           Implements the "ToUnicode" function from UTS #46, section 4.3. It
66           converts a domain name to Unicode and throws an exception on
67           invalid input.
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69           This function takes the following optional parameters (%param):
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71           AllowUnassigned
72                 see above.
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74           UseSTD3ASCIIRules
75                 see above.
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77           TransitionalProcessing
78               (boolean) If given, this parameter must be false. The UTS #46
79               specification does not define transitional processing for
80               ToUnicode.
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UNICODE CHARACTER PROPERTIES

83       This module also defines the character properties listed below.
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85       Each character has exactly one of the following properties:
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87       "\p{Net::IDN::UTS46::IsValid}"
88           The code point is valid, and not modified (i.e. a deviation
89           character) in UTS #46.
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91       "\p{Net::IDN::UTS46::IsIgnored}"
92           The code point is removed (i.e. mapped to an empty string) in
93           UTS #46.
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95       "\p{Net::IDN::UTS46::IsMapped}"
96           The code point is replaced by another string in UTS #46.
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98       "\p{Net::IDN::UTS46::IsDeviation}"
99           The code point is either mapped or valid, depending on whether the
100           processing is transitional or not.
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102       "\p{Net::IDN::UTS46::IsDisallowed}"
103           The code point is not allowed in UTS #46.
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105       "\p{Net::IDN::UTS46::IsDisallowedSTD3Ignored}"
106           The code point is not allowed in UTS #46 if "UseSTDASCIIRules" are
107           used but would be ignored otherwise.
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109       "\p{Net::IDN::UTS46::IsDisallowedSTD3Mapped}"
110           The code point is not allowed in UTS #46 if "UseSTDASCIIRules" are
111           used but would be mapped otherwise.
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AUTHOR

114       Claus Färber <CFAERBER@cpan.org>
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LICENSE

117       Copyright 2011-2018 Claus Färber.
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119       This library is free software; you can redistribute it and/or modify it
120       under the same terms as Perl itself.
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