man I18N::Collate () - compare 8-bit scalar data according to the current locale

NAME

I18N::Collate - compare 8-bit scalar data according to the current locale

SYNOPSIS

    use I18N::Collate;
    setlocale(LC_COLLATE, 'locale-of-your-choice'); 
    $s1 = new I18N::Collate "scalar_data_1";
    $s2 = new I18N::Collate "scalar_data_2";

DESCRIPTION

  ***

  WARNING: starting from the Perl version 5.003_06
  the I18N::Collate interface for comparing 8-bit scalar data
  according to the current locale

        HAS BEEN DEPRECATED

  That is, please do not use it anymore for any new applications
  and please migrate the old applications away from it because its
  functionality was integrated into the Perl core language in the
  release 5.003_06.

  See the perllocale manual page for further information.

  ***

This module provides you with objects that will collate according to your national character set, provided that the POSIX setlocale() function is supported on your system.

You can compare CW$s1 and CW$s2 above with

    $s1 le $s2

to extract the data itself, you'll need a dereference: $$s1

This module uses POSIX::setlocale(). The basic collation conversion is done by strxfrm() which terminates at NUL characters being a decent C routine. collate_xfrm() handles embedded NUL characters gracefully.

The available locales depend on your operating system; try whether CWlocale -a shows them or man pages for locale or nlsinfo or the direct approach CWls /usr/lib/nls/loc or CWls /usr/lib/nls or CWls /usr/lib/locale. Not all the locales that your vendor supports are necessarily installed: please consult your operating system's documentation and possibly your local system administration. The locale names are probably something like CWxx_XX.(ISO)?8859-N or CWxx_XX.(ISO)?8859N, for example CWfr_CH.ISO8859-1 is the Swiss (CH) variant of French (fr), ISO Latin (8859) 1 (-1) which is the Western European character set.