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<?php
// +----------------------------------------------------------------------+
// | PEAR :: I18Nv2 :: Negotiator |
// +----------------------------------------------------------------------+
// | This source file is subject to version 3.0 of the PHP license, |
// | that is available at http://www.php.net/license/3_0.txt |
// | If you did not receive a copy of the PHP license and are unable |
// | to obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Copyright (c) 2004 The Authors |
// +----------------------------------------------------------------------+
// | Authors: Naoki Shima <murahachibu@php.net> |
// | Wolfram Kriesing <wk@visionp.de> |
// | Michael Wallner <mike@iworks.at> |
// +----------------------------------------------------------------------+
//
// $Id$
/**
* I18Nv2::Negotiator
*
* @package I18Nv2
* @category Internationalization
*/
/**
* I18Nv2_Negotiator
*
* @author Naoki Shima <murahachibu@php.net>
* @author Wolfram Kriesing <wk@visionp.de>
* @author Michael Wallner <mike@php.net>
* @version $Revision$
* @access public
* @package I18Nv2
*/
class I18Nv2_Negotiator
{
/**
* I18Nv2_Language
*
* @var object
* @access public
*/
var $I18NLang = null;
/**
* I18Nv2_Country
*
* @var object
* @access public
*/
var $I18NCountry = null;
/**
* Save default country code.
*
* @var string
* @access private
*/
var $_defaultCountry;
/**
* Save default language code.
*
* @var string
* @access private
*/
var $_defaultLanguage;
/**
* Save default encoding code.
*
* @var string
* @access private
*/
var $_defaultEncoding;
/**
* HTTP_ACCEPT_CHARSET
*
* @var array
* @access private
*/
var $_acceptEncoding = array();
/**
* HTTP_ACCEPT_LANGUAGE
*
* @var array
* @access private
*/
var $_acceptLanguage = array();
/**
* Language variations
*
* @var array
* @access private
*/
var $_langVariation = array();
/**
* Countries
*
* @var array
* @access private
*/
var $_country = array();
/**
* Constructor
*
* Find language code, country code, encoding code, and dialect or variant
* of Locale setting in HTTP request headers.
*
* @access public
* @param string $defaultLanguage Default Language
* @param string $defaultEncoding Default Encoding
* @param string $defaultCountry Default Country
*/
function I18Nv2_Negotiator($defaultLanguage = 'en', $defaultEncoding = 'iso-8859-1', $defaultCountry = '')
{
$this->__construct($defaultLanguage, $defaultEncoding, $defaultCountry);
}
/**
* ZE2 Constructor
* @ignore
*/
function __construct($defaultLanguage = 'en', $defaultEncoding = 'iso-8859-1', $defaultCountry = '')
{
$this->_defaultCountry = $defaultCountry;
$this->_defaultLanguage = $defaultLanguage;
$this->_defaultEncoding = $defaultEncoding;
$this->_negotiateLanguage();
$this->_negotiateEncoding();
}
/**
* Negotiate Language
*
* @access private
* @return void
*/
function _negotiateLanguage()
{
if (!isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
return;
}
foreach(explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']) as $lang) {
// Cut off any q-value that might come after a semi-colon
if ($pos = strpos($lang, ';')) {
$lang = trim(substr($lang, 0, $pos));
}
if (strstr($lang, '-')) {
list($pri, $sub) = explode('-', $lang);
if ($pri == 'i') {
/**
* Language not listed in ISO 639 that are not variants
* of any listed language, which can be registerd with the
* i-prefix, such as i-cherokee
*/
$lang = $sub;
} else {
$lang = $pri;
$this->singleI18NCountry();
if ($this->I18NCountry->isValidCode($sub)) {
$this->_country[$lang][] = strToUpper($sub);
} else {
$this->_langVariation[$lang][] = $sub;
}
}
}
$this->_acceptLanguage[] = $lang;
}
}
/**
* Negotiate Encoding
*
* @access private
* @return void
*/
function _negotiateEncoding()
{
if (!isset($_SERVER['HTTP_ACCEPT_CHARSET'])) {
return;
}
foreach (explode(',', $_SERVER['HTTP_ACCEPT_CHARSET']) as $encoding) {
if (!empty($encoding)) {
$this->_acceptEncoding[] = preg_replace('/;.*/', '', $encoding);
}
}
}
/**
* Find Country Match
*
* @access public
* @return array
* @param string $lang
* @param array $countries
*/
function getCountryMatch($lang, $countries = null)
{
return $this->_getMatch(
$countries,
@$this->_country[$lang],
$this->_defaultCountry
);
}
/**
* Return variant info for passed parameter.
*
* @access public
* @return string
* @param string $lang
*/
function getVariantInfo($lang)
{
return isset($this->_langVariation[$lang]) ? $this->_langVariation[$lang] : null;
}
/**
* Find Encoding match
*
* @deprecated
* @access public
* @return string
* @param array $encodings
*/
function getCharsetMatch($encodings = null)
{
return $this->_getMatch(
$encodings,
$this->_acceptEncoding,
$this->_defaultEncoding
);
}
/**
* Find Encoding match
*
* @access public
* @return string
* @param array $encodings
*/
function getEncodingMatch($encodings = null)
{
return $this->_getMatch(
$encodings,
$this->_acceptEncoding,
$this->_defaultEncoding
);
}
/**
* Find Language match
*
* @access public
* @return string
* @param array $langs
*/
function getLanguageMatch($langs = null)
{
return $this->_getMatch(
$langs,
$this->_acceptLanguage,
$this->_defaultLanguage
);
}
/**
* Find locale match
*
* @access public
* @return string
* @param array $langs
* @param array $countries
*/
function getLocaleMatch($langs = null, $countries = null)
{
$lang = $this->_getMatch($langs, $this->_acceptLanguage, $this->_defaultLanguage);
$ctry = $this->_getMatch($countries, @$this->_country[$lang], $this->_defaultCountry);
return $lang . ($ctry ? '_' . $ctry : '');
}
/**
* Return first matched value from first and second parameter.
* If there is no match found, then return third parameter.
*
* @access private
* @return string
* @param array $needle
* @param array $haystack
* @param string $default
*/
function _getMatch($needle, $haystack, $default = '')
{
if (!$haystack) {
return $default;
}
if (!$needle) {
return current($haystack);
}
if ($result = current($a = array_intersect($haystack, $needle))) {
return $result;
}
return $default;
}
/**
* Find Country name for country code passed
*
* @access private
* @return void
* @param string $code country code
*/
function getCountryName($code)
{
$this->singleI18NCountry();
return $this->I18NCountry->getName($code);
}
/**
* Find Country name for country code passed
*
* @access private
* @return void
* @param string $code language code
*/
function getLanguageName($code)
{
$this->singleI18NLanguage();
return $this->I18NLang->getName($code);
}
/**
* Create the Language helper object
*
* @access public
* @return object
*/
function &singleI18NLanguage()
{
if (!isset($this->I18NLang)) {
include_once 'I18Nv2/Language.php';
$this->I18NLang = &new I18Nv2_Language(
$this->_defaultLanguage,
$this->_defaultEncoding
);
}
return $this->I18NLang;
}
/**
* Create the Country helper object
*
* @access public
* @return object
*/
function &singleI18NCountry()
{
if (!isset($this->I18NCountry)) {
include_once 'I18Nv2/Country.php';
$this->I18NCountry = &new I18Nv2_Country(
$this->_defaultLanguage,
$this->_defaultEncoding
);
}
return $this->I18NCountry;
}
}
?>
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