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<?php
$endrun=false;
define("CONTROLLERS_DIR",dirname(__FILE__).'/controllers/');
define("VIEWS_DIR",dirname(__FILE__).'/views/');
define("MODELS_DIR",dirname(__FILE__).'/models/');
define("CONFIG_DIR",dirname(__FILE__).'/config/');
define("CLASSS_DIR",dirname(__FILE__).'/classs/');
define("CONFIG_FILE",'config.php');
if(file_exists(CONFIG_DIR.CONFIG_FILE))
{
	require(CONFIG_DIR.CONFIG_FILE);
}
function inti()
{
	set_error_handler('error_handler');
	register_shutdown_function('shutdown_func');
	if(version_compare(PHP_VERSION,'5.4.0','<')) 
	{
		ini_set('magic_quotes_runtime',0);
	}
	else
	{
		define('MAGIC_QUOTES_GPC',false);
	}
	if(get_config('charset')!='error')
	{
		ini_set('default_charset',get_config('charset'));
	}
	if(get_config('appname')!='error')
	{
		header('X-Powered-By:'.get_config('appname'));
	}
	if(get_config('timezone')!='error')
	{
		ini_set('date.timezone',get_config('timezone'));
	}
	if(get_config('debug')!='error')
	{
		if(get_config('debug')==false)
		{
			ini_set("display_errors", "off");
		}
		if(get_config('debug')==true)
		{
			ini_set("display_errors", "on");
		}
	}
}
function get_query()
{
	$request_url=$_SERVER['REQUEST_URI'];
	$a=explode('/',$request_url);
	$length=count($a);
	if($length<4)
	{
		return false;
	}
	else
	{
		$s=$a[3];
		if(strpos($s,'.html')===false)
		{
			return $s;
		}
		else
		{
			return str_replace('.html','',$s);
		}
	}
	
}
function get_config($key)
{
	if(isset($GLOBALS['config']))
	{
		if(is_array($GLOBALS['config']))
		{
			if(array_key_exists($key,$GLOBALS['config']))
			{
				return $GLOBALS['config'][$key];
			}
		}
	}
	return 'error';
}
function is_method($method)
{
	$m=$_SERVER['REQUEST_METHOD'];
	if(strtoupper($method)==$m)
	{
		return true;
	}
	return false;
}
//页面跳转
function redirect($url)
{
	header('Location:'.$url);
	exit();
}
//载入model
function model($name)
{
	$name.='_model';
	if(file_exists(MODELS_DIR.$name.'.php'))
	{
		require_once(MODELS_DIR.$name.'.php');
		if(class_exists($name))
		{
			$c=new $name;
			return $c;
		}
	}
	return false;
}
//载入class
function load_class($name)
{
	if(file_exists(CLASSS_DIR.$name.'.php'))
	{
		include(CLASSS_DIR.$name.'.php');
	}
}
function error_handler($errno,$errstr,$errfile,$errline)
{
	if (!(error_reporting() & $errno)) 
	{
	   return;
    }
	echo 'something is wrong!';
}
function shutdown_func()
{
	if(!$GLOBALS['endrun'])
	{
		echo("500 something is wrong!");
	}
}
function map()
{
	$request_url=$_SERVER['REQUEST_URI'];
	if($request_url=='/')
	{
		instance('index','index');
	}
	else
	{
		$a=explode('/',$request_url);
		$length=count($a);
		$c=$a[1];
		if($length>=3)
		{
			$m=$a[2];
			if($m=="")
			{
				instance($c,$c);
			}
			else
			{
				instance($c,$m);
			}
		}
		else
		{
			instance($c,$c);
		}
	}
	$GLOBALS['endrun']=true;
}
function instance($c,$m)
{
	$c.='_controller';
	$m.='_action';
	if(file_exists(CONTROLLERS_DIR.$c.'.php'))
	{
		require_once(CONTROLLERS_DIR.$c.'.php');
		if(class_exists($c))
		{
			if(method_exists($c,$m))
			{
				$r=new $c;
				if($c!=$m)
				{
					$r->$m();
				}
			}
			else
			{
				echo '404 not found';
			}
		}
		else
		{
			echo '404 not found';
		}
	}
	else
	{
		echo '404 not found';
	}
}
function json($arr)
{
	header('content-type:application/json; charset=utf-8');
	if(is_array($arr))
	{
		echo json_encode($arr);
		return;
	}
	echo json_decode(array('error'=>'parameter error'));
}
function text($str)
{
	header('content-type:text/plain; charset=utf-8');
	echo $str;
}
function render($view,$data = null)
{
	$path=VIEWS_DIR.$view.'.php';
	if(file_exists($path))
	{
		header('content-type:text/html; charset=utf-8');
		ob_start();
		if(is_array($data))
		{
			extract($data);
		}
		require $path;
		echo trim(ob_get_clean());
	}
	else
	{
		echo 'template not found';
	}
}
function run()
{
	inti();
	map();
}
run();
?>