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.