Edit: /usr/share/perl5/Dpkg/Gettext.pm (5779B)
# Copied from /usr/share/perl5/Debconf/Gettext.pm
#
# Copyright © 2000 Joey Hess
# Copyright © 2007, 2009-2010, 2012-2017 Guillem Jover
#
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# modification, are permitted provided that the following conditions
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# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
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#
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package Dpkg::Gettext;
use strict;
use warnings;
use feature qw(state);
our $VERSION = '2.00';
our @EXPORT = qw(
textdomain
ngettext
g_
P_
N_
);
use Exporter qw(import);
=encoding utf8
=head1 NAME
Dpkg::Gettext - convenience wrapper around Locale::gettext
=head1 DESCRIPTION
The Dpkg::Gettext module is a convenience wrapper over the Locale::gettext
module, to guarantee we always have working gettext functions, and to add
some commonly used aliases.
=head1 ENVIRONMENT
=over 4
=item DPKG_NLS
When set to 0, this environment variable will disable the National Language
Support in all Dpkg modules.
=back
=head1 VARIABLES
=over 4
=item $Dpkg::Gettext::DEFAULT_TEXT_DOMAIN
Specifies the default text domain name to be used with the short function
aliases. This is intended to be used by the Dpkg modules, so that they
can produce localized messages even when the calling program has set the
current domain with textdomain(). If you would like to use the aliases
for your own modules, you might want to set this variable to undef, or
to another domain, but then the Dpkg modules will not produce localized
messages.
=back
=cut
our $DEFAULT_TEXT_DOMAIN = 'dpkg-dev';
=head1 FUNCTIONS
=over 4
=item $domain = textdomain($new_domain)
Compatibility textdomain() fallback when Locale::gettext is not available.
If $new_domain is not undef, it will set the current domain to $new_domain.
Returns the current domain, after possibly changing it.
=item $trans = ngettext($msgid, $msgid_plural, $n)
Compatibility ngettext() fallback when Locale::gettext is not available.
Returns $msgid if $n is 1 or $msgid_plural otherwise.
=item $trans = g_($msgid)
Calls dgettext() on the $msgid and returns its translation for the current
locale. If dgettext() is not available, simply returns $msgid.
=item $trans = C_($msgctxt, $msgid)
Calls dgettext() on the $msgid and returns its translation for the specific
$msgctxt supplied. If dgettext() is not available, simply returns $msgid.
=item $trans = P_($msgid, $msgid_plural, $n)
Calls dngettext(), returning the correct translation for the plural form
dependent on $n. If dngettext() is not available, returns $msgid if $n is 1
or $msgid_plural otherwise.
=cut
use constant GETTEXT_CONTEXT_GLUE => "\004";
BEGIN {
my $use_gettext = $ENV{DPKG_NLS} // 1;
if ($use_gettext) {
eval q{
pop @INC if $INC[-1] eq '.';
use Locale::gettext;
};
$use_gettext = not $@;
}
if (not $use_gettext) {
*g_ = sub {
return shift;
};
*textdomain = sub {
my $new_domain = shift;
state $domain = $DEFAULT_TEXT_DOMAIN;
$domain = $new_domain if defined $new_domain;
return $domain;
};
*ngettext = sub {
my ($msgid, $msgid_plural, $n) = @_;
if ($n == 1) {
return $msgid;
} else {
return $msgid_plural;
}
};
*C_ = sub {
my ($msgctxt, $msgid) = @_;
return $msgid;
};
*P_ = sub {
return ngettext(@_);
};
} else {
*g_ = sub {
return dgettext($DEFAULT_TEXT_DOMAIN, shift);
};
*C_ = sub {
my ($msgctxt, $msgid) = @_;
return dgettext($DEFAULT_TEXT_DOMAIN,
$msgctxt . GETTEXT_CONTEXT_GLUE . $msgid);
};
*P_ = sub {
return dngettext($DEFAULT_TEXT_DOMAIN, @_);
};
}
}
=item $msgid = N_($msgid)
A pseudo function that servers as a marked for automated extraction of
messages, but does not call gettext(). The run-time translation is done
at a different place in the code.
=back
=cut
sub N_
{
my $msgid = shift;
return $msgid;
}
=head1 CHANGES
=head2 Version 2.00 (dpkg 1.20.0)
Remove function: _g().
=head2 Version 1.03 (dpkg 1.19.0)
New envvar: Add support for new B environment variable.
=head2 Version 1.02 (dpkg 1.18.3)
New function: N_().
=head2 Version 1.01 (dpkg 1.18.0)
Now the short aliases (g_ and P_) will call domain aware functions with
$DEFAULT_TEXT_DOMAIN.
New functions: g_(), C_().
Deprecated function: _g().
=head2 Version 1.00 (dpkg 1.15.6)
Mark the module as public.
=cut
1;