package locale;

our $VERSION = '1.02';
use Config;

$Carp::Internal{ (__PACKAGE__) } = 1;

# A separate bit is used for each of the two forms of the pragma, as they are
# mostly independent, and interact with each other and the unicode_strings
# feature. This allows for fast determination of which one(s) of the three
# are to be used at any given point, and no code has to be written to deal
# with coming in and out of scopes--it falls automatically out from the hint
# handling

$locale::hint_bits = 0x4;
$locale::not_chars_hint_bits = 0x10;

sub import {
shift; # should be 'locale'; not checked

if(!$Config{d_setlocale}) {
## No locale support found on this Perl, giving up:
die('Your vendor does not support locales, you cannot use the locale module.');
}

my $found_not_chars = 0;
while (defined (my $arg = shift)) {
if ($arg eq ":not_characters") {
$^H |= $locale::not_chars_hint_bits;

# This form of the pragma overrides the other
$^H &= ~$locale::hint_bits;
$found_not_chars = 1;
}
else {
require Carp;
Carp::croak("Unknown parameter '$arg' to 'use locale'");
}
}

# Use the plain form if not doing the :not_characters one.
$^H |= $locale::hint_bits unless $found_not_chars;
}

sub unimport {
$^H &= ~($locale::hint_bits|$locale::not_chars_hint_bits);
}

1;