/IdeaPHP/library/Idea/Language.php

<?php
class Idea_Language{
    
    /**
     * 
     * @var Idea_Language
     */
    static protected $_instance;
    
    /**
     * ????
     * @var array
     */
    protected $_data = array();
    
    /**
     * ??????????
     * @var array
     */
    protected $clientLanguage;
    
    /**
     * ?????
     * @var string
     */
    protected $currentLanguage;
    
    protected $_dir;
    
    protected function __construct(){
        $this->set();
    }
    
    /**
     * 
     * @version Oren.Chen 2011-10-18 ??10:59:10
     * @return Idea_Language
     */
    static public function getInstance(){
        if (self::$_instance === null){
            self::$_instance = new self();
        }
        return self::$_instance;
    }
    
    /**
     * ??????????
     * @version Oren.Chen 2011-10-18 ??12:04:07
     * @param bool $re
     * @return array
     */
    public function detect($re = false){
        if ($this->clientLanguage === null || $re){
            $this->clientLanguage = $browser_langs = array();
            if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])){
                $browser_accept = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
                foreach ($browser_accept as $item){
                    if (preg_match("!([a-z-]+)(;q=([0-9\\.]+))?!", trim($item), $found)){
                        $browser_langs[$found[1]] = (isset($found[3]) ? (float) $found[3] : 1.0);
                    }
                }
                arsort($browser_langs);
                foreach (array_keys($browser_langs) as $lancode){
                    $this->clientLanguage[] = $lancode;
                }
            }
        }
        return $this->clientLanguage;
    }
    
    /**
     * ??????
     * @version Oren.Chen 2011-10-18 ??12:41:24
     * @param string $langcode
     */
    public function set($langcode = null){
        if ($langcode === null){
            $browser_langs = $this->detect();
            $this->currentLanguage = $browser_langs[0];
        }else {
            $this->currentLanguage = $langcode;
        }
    }
    
    /**
     * ????
     * @version Oren.Chen 2011-10-18 ??03:32:53
     * @param string $filename
     */
    public function load($filename){
        $file = $this->_dir . $this->currentLanguage . DIRECTORY_SEPARATOR . $filename . '.php';
        if (is_file($file)){
            $data = include $file;
            if (is_array($data)){
                $this->_data = array_merge($this->_data, $data);
            }
            return true;
        }
        return false;
    }
    
    /**
     * ?????
     * @version Oren.Chen 2011-10-18 ??03:32:44
     * @param string $dir
     */
    public function bind($dir){
        $this->_dir = $dir;
    }
    
    /**
     * 
     * @version Oren.Chen 2011-10-18 ??02:09:24
     * @param string $text
     * @return string
     */
    public function gettext($text){
        return isset($this->_data[$text]) ? $this->_data[$text] : $text;
    }
    
    /**
     * 
     * @version Oren.Chen 2011-10-18 ??02:09:27
     * @param string $text
     * @param string|array $variable
     * @return string
     */
    public function _($text, $variable = null){
        $args = func_get_args();
        $text = $this->gettext(array_shift($args));
        $current = current($args);
        return vsprintf($text, is_array($current) ? $current : $args);
    }
    
    /**
     * 
     * @version Oren.Chen 2011-10-18 ??02:09:31
     * @param string $text
     * @param string|array $variable
     */
    public function e($text, $variable = null){
        $args = func_get_args();
        $text = $this->gettext(array_shift($args));
        $current = current($args);
        return vprintf($text, is_array($current) ? $current : $args);
    }
    
    /**
     * 
     * @version Oren.Chen 2011-10-18 ??02:09:34
     * @param string $text
     * @param string|array $variable
     * @return string
     */
    static public function __($text, $variable = null){
        return call_user_func_array(array(self::$_instance, '_'), func_get_args());
    }
    
    /**
     * 
     * @version Oren.Chen 2011-10-18 ??02:09:38
     * @param string $text
     * @param string|array $variable
     */
    static public function _e($text, $variable = null){
        return call_user_func_array(array(self::$_instance, 'e'), func_get_args());
    }
}

/**
 * ????????
 * @param string $text
 * @param string|array $variable
 * @return string
 */
function __($text, $variable = null){
    return call_user_func_array(array(Idea_Language::getInstance(), '__'), func_get_args());
}

/*
 * ??????????
 * @param string $text
 * @param string|array $variable
 */
function _e($text, $variable = null){
    return call_user_func_array(array(Idea_Language::getInstance(), '_e'), func_get_args());
}

function _p($text, $variable = null){
    $lang = Idea_Language::getInstance();
    $args = func_get_args();
    $num = func_num_args();
    $text = $lang->gettext(array_shift($args));
    if ($num > 1){
        echo 'printf(' . "'$text'" . ', \''.implode('\',\'', $args).'\');';
    }else {
        echo $text;
    }
}