ActiveState!

ActivePerl Documentation
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(Usage Statistics)
(about this ver)


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* ActivePerl FAQ
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 Locale::Language - ISO two letter codes for language identification


NAME

Locale::Language - ISO two letter codes for language identification (ISO 639)


SUPPORTED PLATFORMS

  • Linux
  • Solaris
  • Windows
This module is not included with the standard ActivePerl distribution. It is available as a separate download using PPM.

SYNOPSIS

    use Locale::Language;

    $lang = code2language('en');        # $lang gets 'English'
    $code = language2code('French');    # $code gets 'fr'

    @codes   = all_language_codes();
    @names   = all_language_names();


DESCRIPTION

The 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 conversion routines (described below), or with the two functions which return lists of all language codes or all language names.


CONVERSION ROUTINES

There are two conversion routines: code2language() and language2code().

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 undef will be returned.
    $lang = code2language($code);

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 undef will be returned.
    $code = language2code('French');

The case of the language name is not important. See the section KNOWN BUGS AND LIMITATIONS below.


QUERY ROUTINES

There are two function which can be used to obtain a list of all language codes, or all language names:

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.

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.


EXAMPLES

The following example illustrates use of the 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";
    }


KNOWN BUGS AND LIMITATIONS

  • 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.


SEE ALSO

Locale::Country
ISO two letter codes for identification of country (ISO 3166).

ISO 639:1988 (E/F)
Code for the representation of names of languages.


AUTHOR

Neil Bowers <neilb@cre.canon.co.uk>


COPYRIGHT

Copyright (c) 1997 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.

 Locale::Language - ISO two letter codes for language identification