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-
- =head1 NAME
-
- Locale::Language - ISO two letter codes for language identification (ISO 639)
-
- =head1 SYNOPSIS
-
- use Locale::Language;
-
- $lang = code2language('en'); # $lang gets 'English'
- $code = language2code('French'); # $code gets 'fr'
-
- @codes = all_language_codes();
- @names = all_language_names();
-
-
- =head1 DESCRIPTION
-
- The C<Locale::Language> module provides access to the ISO two-letter
- codes for identifying languages, as defined in ISO 639. You can either
- access the codes via the L<conversion routines> (described below),
- or via the two functions which return lists of all language codes or
- all language names.
-
-
- =head1 CONVERSION ROUTINES
-
- There are two conversion routines: C<code2language()> and C<language2code()>.
-
- =over 4
-
- =item code2language()
-
- This function takes a two letter language code and returns a string
- which contains the name of the language identified. If the code is
- not a valid language code, as defined by ISO 639, then C<undef>
- will be returned.
-
- $lang = code2language($code);
-
- =item language2code()
-
- This function takes a language name and returns the corresponding
- two letter language code, if such exists.
- If the argument could not be identified as a language name,
- then C<undef> will be returned.
-
- $code = language2code('French');
-
- The case of the language name is not important.
- See the section L<KNOWN BUGS AND LIMITATIONS> below.
-
- =back
-
-
- =head1 QUERY ROUTINES
-
- There are two function which can be used to obtain a list of all
- language codes, or all language names:
-
- =over 4
-
- =item C<all_language_codes()>
-
- Returns a list of all two-letter language codes.
- The codes are guaranteed to be all lower-case,
- and not in any particular order.
-
- =item C<all_language_names()>
-
- Returns a list of all language names for which there is a corresponding
- two-letter language code. The names are capitalised, and not returned
- in any particular order.
-
- =back
-
-
- =head1 EXAMPLES
-
- The following example illustrates use of the C<code2language()> function.
- The user is prompted for a language code, and then told the corresponding
- language name:
-
- $| = 1; # turn off buffering
-
- print "Enter language code: ";
- chop($code = <STDIN>);
- $lang = code2language($code);
- if (defined $lang)
- {
- print "$code = $lang\n";
- }
- else
- {
- print "'$code' is not a valid language code!\n";
- }
-
- =head1 KNOWN BUGS AND LIMITATIONS
-
- =over 4
-
- =item *
-
- In the current implementation, all data is read in when the
- module is loaded, and then held in memory.
- A lazy implementation would be more memory friendly.
-
- =item *
-
- Currently just supports the two letter language codes -
- there are also three-letter codes, and numbers.
- Would these be of any use to anyone?
-
- =back
-
- =head1 SEE ALSO
-
- =over 4
-
- =item Locale::Country
-
- ISO codes for identification of country (ISO 3166).
- Supports 2-letter, 3-letter, and numeric country codes.
-
- =item Locale::Script
-
- ISO codes for identification of written scripts (ISO 15924).
-
- =item Locale::Currency
-
- ISO three letter codes for identification of currencies and funds (ISO 4217).
-
- =item ISO 639:1988 (E/F)
-
- Code for the representation of names of languages.
-
- =item http://lcweb.loc.gov/standards/iso639-2/langhome.html
-
- Home page for ISO 639-2.
-
- =back
-
-
- =head1 AUTHOR
-
- Neil Bowers E<lt>neil@bowers.comE<gt>
-
- =head1 COPYRIGHT
-
- Copyright (C) 2002, Neil Bowers.
-
- Copyright (c) 1997-2001 Canon Research Centre Europe (CRE).
-
- This module is free software; you can redistribute it and/or
- modify it under the same terms as Perl itself.
-
- =cut
-
-