<?php

class staticCache
{
    private static $loaded_caches = array();

    private static function _writeArray($array)
    {
        $out = '';
        foreach($array as $key=>$value)
        {
            if(is_array($value))
            {
                $arr2 = self::_writeArray($value);
                $out.= '"'.$key.'" => array('.$arr2.'), ';
            }
            else
            {
                $out.= '"'.$key.'" => "'.str_replace('"', '\"', $value).'", ';
            }
            $out.= "\n";
        }
        return $out;
    }

    private static function _loadCache($id)
    {
        $path = self::_getPath($id);

        if(!file_exists($path)) return false;
        if(require_once($path))
        {
            self::$loaded_caches[$id] = true;
            return true;
        }

        return false;
    }

    private static function _getPath($id)
    {
        return LENCRIER_ROOT . '/cache/cache_'.$id.'.php';
    }

    public static function put($id, $content)
    {
        $path = self::_getPath($id);

        $old_content = self::get($id);
        if(!empty($old_content) && is_array($old_content))
        {
            foreach($old_content as $key=>$value)
            {
                if(empty($content[$key]))
                    $content[$key] = $value;
            }
        }

        $out = '<?php $GLOBALS["static_cache"]["'.$id.'"] = array(';
        $out.= "\n";
        $out.= self::_writeArray($content);
        $out.= '); ?>';

        $fp = @fopen($path, 'w');
        if(!$fp) return false;

        fputs($fp, $out);
        fclose($fp);

        $GLOBALS['static_cache'][$id] = $content;
        self::$loaded_caches[$id] = true;

        return true;
    }

    public static function get($id, $key=false)
    {
        if(empty(self::$loaded_caches[$id]))
        {
            if(!self::_loadCache($id))
                return false;
        }
        if(empty(self::$loaded_caches[$id]))
            return false;

        if(empty($key))
            return $GLOBALS['static_cache'][$id];
        else
            return $GLOBALS['static_cache'][$id][$key];
    }

    public static function erease($id)
    {
        $path = self::_getPath($id);

        if(!file_exists($path)) return true;

        if(@unlink($path)) return true;
        return false;
    }
}

?>