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<?php
/*
Copyright (c) 2005 Steven Armstrong <sa at c-area dot ch>
Copyright (c) 2009 Danilo Segan <danilo@kvota.net>
Drop in replacement for native gettext.
This file is part of PHP-gettext.
PHP-gettext is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
PHP-gettext is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with PHP-gettext; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
LC_CTYPE 0
LC_NUMERIC 1
LC_TIME 2
LC_COLLATE 3
LC_MONETARY 4
LC_MESSAGES 5
LC_ALL 6
*/
// LC_MESSAGES is not available if php-gettext is not loaded
// while the other constants are already available from session extension.
if (!defined('LC_MESSAGES')) {
define('LC_MESSAGES', 5);
}
require('streams.php');
require('gettext.php');
// Variables
global $text_domains, $default_domain, $LC_CATEGORIES, $EMULATEGETTEXT, $CURRENTLOCALE;
$text_domains = array();
$default_domain = 'messages';
$LC_CATEGORIES = array('LC_CTYPE', 'LC_NUMERIC', 'LC_TIME', 'LC_COLLATE', 'LC_MONETARY', 'LC_MESSAGES', 'LC_ALL');
$EMULATEGETTEXT = 0;
$CURRENTLOCALE = '';
/* Class to hold a single domain included in $text_domains. */
class domain {
var $l10n;
var $path;
var $codeset;
}
// Utility functions
/**
* Return a list of locales to try for any POSIX-style locale specification.
*/
function get_list_of_locales($locale) {
/* Figure out all possible locale names and start with the most
* specific ones. I.e. for sr_CS.UTF-8@latin, look through all of
* sr_CS.UTF-8@latin, sr_CS@latin, sr@latin, sr_CS.UTF-8, sr_CS, sr.
*/
$locale_names = array();
$lang = NULL;
$country = NULL;
$charset = NULL;
$modifier = NULL;
if ($locale) {
if (preg_match("/^(?P<lang>[a-z]{2,3})" // language code
."(?:_(?P<country>[A-Z]{2}))?" // country code
."(?:\.(?P<charset>[-A-Za-z0-9_]+))?" // charset
."(?:@(?P<modifier>[-A-Za-z0-9_]+))?$/", // @ modifier
$locale, $matches)) {
if (isset($matches["lang"])) $lang = $matches["lang"];
if (isset($matches["country"])) $country = $matches["country"];
if (isset($matches["charset"])) $charset = $matches["charset"];
if (isset($matches["modifier"])) $modifier = $matches["modifier"];
if ($modifier) {
if ($country) {
if ($charset)
array_push($locale_names, "${lang}_$country.$charset@$modifier");
array_push($locale_names, "${lang}_$country@$modifier");
} elseif ($charset)
array_push($locale_names, "${lang}.$charset@$modifier");
array_push($locale_names, "$lang@$modifier");
}
if ($country) {
if ($charset)
array_push($locale_names, "${lang}_$country.$charset");
array_push($locale_names, "${lang}_$country");
} elseif ($charset)
array_push($locale_names, "${lang}.$charset");
array_push($locale_names, $lang);
}
// If the locale name doesn't match POSIX style, just include it as-is.
if (!in_array($locale, $locale_names))
array_push($locale_names, $locale);
}
return $locale_names;
}
/**
* Utility function to get a StreamReader for the given text domain.
*/
function _get_reader($domain=null, $category=5, $enable_cache=true) {
global $text_domains, $default_domain, $LC_CATEGORIES;
if (!isset($domain)) $domain = $default_domain;
if (!isset($text_domains[$domain]->l10n)) {
// get the current locale
$locale = _setlocale(LC_MESSAGES, 0);
$bound_path = isset($text_domains[$domain]->path) ?
$text_domains[$domain]->path : './';
$subpath = $LC_CATEGORIES[$category] ."/$domain.mo";
$locale_names = get_list_of_locales($locale);
$input = null;
foreach ($locale_names as $locale) {
$full_path = $bound_path . $locale . "/" . $subpath;
if (file_exists($full_path)) {
$input = new FileReader($full_path);
break;
}
}
if (!array_key_exists($domain, $text_domains)) {
// Initialize an empty domain object.
$text_domains[$domain] = new domain();
}
$text_domains[$domain]->l10n = new gettext_reader($input,
$enable_cache);
}
return $text_domains[$domain]->l10n;
}
/**
* Returns whether we are using our emulated gettext API or PHP built-in one.
*/
function locale_emulation() {
global $EMULATEGETTEXT;
return $EMULATEGETTEXT;
}
/**
* Checks if the current locale is supported on this system.
*/
function _check_locale_and_function($function=false) {
global $EMULATEGETTEXT;
if ($function and !function_exists($function))
return false;
return !$EMULATEGETTEXT;
}
/**
* Get the codeset for the given domain.
*/
function _get_codeset($domain=null) {
global $text_domains, $default_domain, $LC_CATEGORIES;
if (!isset($domain)) $domain = $default_domain;
return (isset($text_domains[$domain]->codeset))? $text_domains[$domain]->codeset : ini_get('mbstring.internal_encoding');
}
/**
* Convert the given string to the encoding set by bind_textdomain_codeset.
*/
function _encode($text) {
$source_encoding = mb_detect_encoding($text);
$target_encoding = _get_codeset();
if ($source_encoding != $target_encoding) {
return mb_convert_encoding($text, $target_encoding, $source_encoding);
}
else {
return $text;
}
}
// Custom implementation of the standard gettext related functions
/**
* Returns passed in $locale, or environment variable $LANG if $locale == ''.
*/
function _get_default_locale($locale) {
if ($locale == '') // emulate variable support
return getenv('LANG');
else
return $locale;
}
/**
* Sets a requested locale, if needed emulates it.
*/
function _setlocale($category, $locale) {
global $CURRENTLOCALE, $EMULATEGETTEXT;
if ($locale === 0) { // use === to differentiate between string "0"
if ($CURRENTLOCALE != '')
return $CURRENTLOCALE;
else
// obey LANG variable, maybe extend to support all of LC_* vars
// even if we tried to read locale without setting it first
return _setlocale($category, $CURRENTLOCALE);
} else {
if (function_exists('setlocale')) {
$ret = setlocale($category, $locale);
if (($locale == '' and !$ret) or // failed setting it by env
($locale != '' and $ret != $locale)) { // failed setting it
// Failed setting it according to environment.
$CURRENTLOCALE = _get_default_locale($locale);
$EMULATEGETTEXT = 1;
} else {
$CURRENTLOCALE = $ret;
$EMULATEGETTEXT = 0;
}
} else {
// No function setlocale(), emulate it all.
$CURRENTLOCALE = _get_default_locale($locale);
$EMULATEGETTEXT = 1;
}
// Allow locale to be changed on the go for one translation domain.
global $text_domains, $default_domain;
if (array_key_exists($default_domain, $text_domains)) {
unset($text_domains[$default_domain]->l10n);
}
return $CURRENTLOCALE;
}
}
/**
* Sets the path for a domain.
*/
function _bindtextdomain($domain, $path) {
global $text_domains;
// ensure $path ends with a slash ('/' should work for both, but lets still play nice)
if (substr(php_uname(), 0, 7) == "Windows") {
if ($path[strlen($path)-1] != '\\' and $path[strlen($path)-1] != '/')
$path .= '\\';
} else {
if ($path[strlen($path)-1] != '/')
$path .= '/';
}
if (!array_key_exists($domain, $text_domains)) {
// Initialize an empty domain object.
$text_domains[$domain] = new domain();
}
$text_domains[$domain]->path = $path;
}
/**
* Specify the character encoding in which the messages from the DOMAIN message catalog will be returned.
*/
function _bind_textdomain_codeset($domain, $codeset) {
global $text_domains;
$text_domains[$domain]->codeset = $codeset;
}
/**
* Sets the default domain.
*/
function _textdomain($domain) {
global $default_domain;
$default_domain = $domain;
}
/**
* Lookup a message in the current domain.
*/
function _gettext($msgid) {
$l10n = _get_reader();
return _encode($l10n->translate($msgid));
}
/**
* Alias for gettext.
*/
function __($msgid) {
return _gettext($msgid);
}
/**
* Plural version of gettext.
*/
function _ngettext($singular, $plural, $number) {
$l10n = _get_reader();
return _encode($l10n->ngettext($singular, $plural, $number));
}
/**
* Override the current domain.
*/
function _dgettext($domain, $msgid) {
$l10n = _get_reader($domain);
return _encode($l10n->translate($msgid));
}
/**
* Plural version of dgettext.
*/
function _dngettext($domain, $singular, $plural, $number) {
$l10n = _get_reader($domain);
return _encode($l10n->ngettext($singular, $plural, $number));
}
/**
* Overrides the domain and category for a single lookup.
*/
function _dcgettext($domain, $msgid, $category) {
$l10n = _get_reader($domain, $category);
return _encode($l10n->translate($msgid));
}
/**
* Plural version of dcgettext.
*/
function _dcngettext($domain, $singular, $plural, $number, $category) {
$l10n = _get_reader($domain, $category);
return _encode($l10n->ngettext($singular, $plural, $number));
}
/**
* Context version of gettext.
*/
function _pgettext($context, $msgid) {
$l10n = _get_reader();
return _encode($l10n->pgettext($context, $msgid));
}
/**
* Override the current domain in a context gettext call.
*/
function _dpgettext($domain, $context, $msgid) {
$l10n = _get_reader($domain);
return _encode($l10n->pgettext($context, $msgid));
}
/**
* Overrides the domain and category for a single context-based lookup.
*/
function _dcpgettext($domain, $context, $msgid, $category) {
$l10n = _get_reader($domain, $category);
return _encode($l10n->pgettext($context, $msgid));
}
/**
* Context version of ngettext.
*/
function _npgettext($context, $singular, $plural) {
$l10n = _get_reader();
return _encode($l10n->npgettext($context, $singular, $plural));
}
/**
* Override the current domain in a context ngettext call.
*/
function _dnpgettext($domain, $context, $singular, $plural) {
$l10n = _get_reader($domain);
return _encode($l10n->npgettext($context, $singular, $plural));
}
/**
* Overrides the domain and category for a plural context-based lookup.
*/
function _dcnpgettext($domain, $context, $singular, $plural, $category) {
$l10n = _get_reader($domain, $category);
return _encode($l10n->npgettext($context, $singular, $plural));
}
// Wrappers to use if the standard gettext functions are available,
// but the current locale is not supported by the system.
// Use the standard impl if the current locale is supported, use the
// custom impl otherwise.
function T_setlocale($category, $locale) {
return _setlocale($category, $locale);
}
function T_bindtextdomain($domain, $path) {
if (_check_locale_and_function()) return bindtextdomain($domain, $path);
else return _bindtextdomain($domain, $path);
}
function T_bind_textdomain_codeset($domain, $codeset) {
// bind_textdomain_codeset is available only in PHP 4.2.0+
if (_check_locale_and_function('bind_textdomain_codeset'))
return bind_textdomain_codeset($domain, $codeset);
else return _bind_textdomain_codeset($domain, $codeset);
}
function T_textdomain($domain) {
if (_check_locale_and_function()) return textdomain($domain);
else return _textdomain($domain);
}
function T_gettext($msgid) {
if (_check_locale_and_function()) return gettext($msgid);
else return _gettext($msgid);
}
function T_($msgid) {
if (_check_locale_and_function()) return _($msgid);
return __($msgid);
}
function T_ngettext($singular, $plural, $number) {
if (_check_locale_and_function())
return ngettext($singular, $plural, $number);
else return _ngettext($singular, $plural, $number);
}
function T_dgettext($domain, $msgid) {
if (_check_locale_and_function()) return dgettext($domain, $msgid);
else return _dgettext($domain, $msgid);
}
function T_dngettext($domain, $singular, $plural, $number) {
if (_check_locale_and_function())
return dngettext($domain, $singular, $plural, $number);
else return _dngettext($domain, $singular, $plural, $number);
}
function T_dcgettext($domain, $msgid, $category) {
if (_check_locale_and_function())
return dcgettext($domain, $msgid, $category);
else return _dcgettext($domain, $msgid, $category);
}
function T_dcngettext($domain, $singular, $plural, $number, $category) {
if (_check_locale_and_function())
return dcngettext($domain, $singular, $plural, $number, $category);
else return _dcngettext($domain, $singular, $plural, $number, $category);
}
function T_pgettext($context, $msgid) {
if (_check_locale_and_function('pgettext'))
return pgettext($context, $msgid);
else
return _pgettext($context, $msgid);
}
function T_dpgettext($domain, $context, $msgid) {
if (_check_locale_and_function('dpgettext'))
return dpgettext($domain, $context, $msgid);
else
return _dpgettext($domain, $context, $msgid);
}
function T_dcpgettext($domain, $context, $msgid, $category) {
if (_check_locale_and_function('dcpgettext'))
return dcpgettext($domain, $context, $msgid, $category);
else
return _dcpgettext($domain, $context, $msgid, $category);
}
function T_npgettext($context, $singular, $plural, $number) {
if (_check_locale_and_function('npgettext'))
return npgettext($context, $singular, $plural, $number);
else
return _npgettext($context, $singular, $plural, $number);
}
function T_dnpgettext($domain, $context, $singular, $plural, $number) {
if (_check_locale_and_function('dnpgettext'))
return dnpgettext($domain, $context, $singular, $plural, $number);
else
return _dnpgettext($domain, $context, $singular, $plural, $number);
}
function T_dcnpgettext($domain, $context, $singular, $plural,
$number, $category) {
if (_check_locale_and_function('dcnpgettext'))
return dcnpgettext($domain, $context, $singular,
$plural, $number, $category);
else
return _dcnpgettext($domain, $context, $singular,
$plural, $number, $category);
}
// Wrappers used as a drop in replacement for the standard gettext functions
if (!function_exists('gettext')) {
function bindtextdomain($domain, $path) {
return _bindtextdomain($domain, $path);
}
function bind_textdomain_codeset($domain, $codeset) {
return _bind_textdomain_codeset($domain, $codeset);
}
function textdomain($domain) {
return _textdomain($domain);
}
function gettext($msgid) {
return _gettext($msgid);
}
function _($msgid) {
return __($msgid);
}
function ngettext($singular, $plural, $number) {
return _ngettext($singular, $plural, $number);
}
function dgettext($domain, $msgid) {
return _dgettext($domain, $msgid);
}
function dngettext($domain, $singular, $plural, $number) {
return _dngettext($domain, $singular, $plural, $number);
}
function dcgettext($domain, $msgid, $category) {
return _dcgettext($domain, $msgid, $category);
}
function dcngettext($domain, $singular, $plural, $number, $category) {
return _dcngettext($domain, $singular, $plural, $number, $category);
}
function pgettext($context, $msgid) {
return _pgettext($context, $msgid);
}
function npgettext($context, $singular, $plural, $number) {
return _npgettext($context, $singular, $plural, $number);
}
function dpgettext($domain, $context, $msgid) {
return _dpgettext($domain, $context, $msgid);
}
function dnpgettext($domain, $context, $singular, $plural, $number) {
return _dnpgettext($domain, $context, $singular, $plural, $number);
}
function dcpgettext($domain, $context, $msgid, $category) {
return _dcpgettext($domain, $context, $msgid, $category);
}
function dcnpgettext($domain, $context, $singular, $plural,
$number, $category) {
return _dcnpgettext($domain, $context, $singular, $plural,
$number, $category);
}
}
?>
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