View file libraries/route.php

<?php
/**
 * MobileCMS
 *
 * Open source content management system for mobile sites
 *
 * @author MobileCMS Team <[email protected]>
 * @copyright Copyright (c) 2011, MobileCMS Team
 * @link http://mobilecms.ru Official site
 * @license http://opensource.org/licenses/gpl-license.php GNU Public License
 */

defined('IN_SYSTEM') or die('<b>403<br />Запрет доступа</b>');

/**
* Route class
*/
class Route {
	/**
	* Путь к контроллеру
	*/
	public $controller_path = NULL;
	/**
	* Название контроллера
	*/
	public $controller_name = NULL;
	/**
	* Получаемый action
	*/
	public $action = NULL;
	/**
	* Флаг существования контроллера
	*/
	public $controller_exists = TRUE;
	/**
	* Модуль
	*/
	public $module;
	/**
	* Сегменты
	*/
	public $segment1;
	public $segment2;
	public $segment3;

	/**
	* Конструктор
	*/
	public function __construct() {
		$this->parse_query();
		$this->route();
	}

	/**
	* Парсинг запроса
	*/
	public function parse_query() {
		$query = str_replace(URL, '', 'http://'. $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
		$ex = explode('?', $query);
		$query = $ex[0];
		
		# Считываем все файлы с правилами роутинга в строку для парсинга
		$rules = '';
		$rules_dir = ROOT .'data_files/route_rules';
		$dir = opendir($rules_dir);
		while($f = readdir($dir)) {
			if(strstr($f, '.rules')) $rules .= trim(file_get_contents($rules_dir .'/'. $f)) . PHP_EOL;
		}
		
		$rules .= '([a-z0-9_\-]*)([\.a-z0-9]*)#segment1=$1'. PHP_EOL;
		$rules .= '([a-z0-9_\-]*)/([a-z0-9_\-]*)([\.a-z0-9]*)#segment1=$1&segment2=$2'. PHP_EOL;
		$rules .= '([a-z0-9_\-]*)/([a-z0-9_\-]*)/([a-z0-9_\-]*)([\.a-z0-9]*)#segment1=$1&segment2=$2&segment3=$3'. PHP_EOL;
		
		$rules = explode("\n", $rules);
	
		foreach($rules as $rule) {
			$rule = trim($rule);
			if(strpos($rule, '#') == 0 or $rule == '') continue;
			$ex = explode('#', $rule);
			if(preg_match('~^'. $ex[0] .'$~', $query)) {
				$result = preg_replace('~^'. $ex[0] .'$~', $ex[1], $query, 1);
				$vars = explode('&', $result);
				foreach($vars as $var) {
					$_ex = explode('=', $var);
					$_GET[$_ex[0]] = $_ex[1];
				}
				break;
			}
		}
	}

	/**
	* Функция определяет контроллер и action
	*/
	public function route() {
		# Определение сегментов
		if($this->_check_segments()) {
			# Если нет сегментов, подключаем модуль по умолчанию
			if(empty($this->segment1)) {
				if(file_exists(ROOT .'modules/'. DEFAULT_MODULE .'/controllers/'. DEFAULT_MODULE .'.php')) {
					$this->controller_path = 'modules/'. DEFAULT_MODULE .'/controllers/'. DEFAULT_MODULE .'.php';
					$this->controller_name = DEFAULT_MODULE;
					$this->action = '';
					$this->module = DEFAULT_MODULE;
				}
				else $this->controller_exists = FALSE;
			}
			# Если указаны все 3 сегмента
			if(!empty($this->segment1) && !empty($this->segment2) && !empty($this->segment3)) {
				if(file_exists(ROOT .'modules/'. $this->segment1 .'/controllers/'. $this->segment1 .'_'. $this->segment2 .'.php')) {
					$this->controller_path = 'modules/'. $this->segment1 .'/controllers/'. $this->segment1 .'_'. $this->segment2 .'.php';
					$this->controller_name = $this->segment1 .'_'. $this->segment2;
					$this->action = $this->segment3;
					$this->module = $this->segment1;
				}
				else $this->controller_exists = FALSE;
			}
			# Если указаны 2 сегмента
			elseif(!empty($this->segment1) && !empty($this->segment2)) {
				if(file_exists(ROOT .'modules/'. $this->segment1 .'/controllers/'. $this->segment1 .'_'. $this->segment2 .'.php')) {
					$this->controller_path = 'modules/'. $this->segment1 .'/controllers/'. $this->segment1 .'_'. $this->segment2 .'.php';
					$this->controller_name = $this->segment1 .'_'. $this->segment2;
					$this->action = '';
					$this->module = $this->segment1;
				}
				elseif(file_exists(ROOT .'modules/'. $this->segment1 .'/controllers/'. $this->segment1 .'.php')) {
					$this->controller_path = 'modules/'. $this->segment1 .'/controllers/'. $this->segment1 .'.php';
					$this->controller_name = $this->segment1;
					$this->action = $this->segment2;
					$this->module = $this->segment1;
				}
				else $this->controller_exists = FALSE;
			}
			# Если указан только 1 сегмент
			elseif(!empty($this->segment1)) {
				if(file_exists(ROOT . 'modules/'. $this->segment1 .'/controllers/'. $this->segment1 .'.php')) {
					$this->controller_path = 'modules/'. $this->segment1 .'/controllers/'. $this->segment1 .'.php';
					$this->controller_name = $this->segment1;
					$this->action = '';
					$this->module = $this->segment1;
				}
				else $this->controller_exists = FALSE;
			}

			if($this->controller_exists) {
				define('ROUTE_CONTROLLER_PATH', $this->controller_path);
				define('ROUTE_CONTROLLER_NAME', $this->controller_name);
				define('ROUTE_ACTION', $this->action);
				define('ROUTE_MODULE', $this->module);
			}
			else header('Location: '. a_url('main/page_not_found', '', true));
		}
	}

	/**
	* Проверка правильности сегментов
	*/
	protected function _check_segments() {
		$check_segments = true;
		if(!empty($_GET['segment1'])) {
			if(preg_match('~^[0-9a-z_-]*$~', $_GET['segment1'])) $this->segment1 = $_GET['segment1'];
			else $check_segments = false;
		}
		if(!empty($_GET['segment2'])) {
			if(preg_match('~^[0-9a-z_-]*$~', $_GET['segment2'])) $this->segment2 = $_GET['segment2'];
			else $check_segments = false;
		}
		if(!empty($_GET['segment3'])) {
			if(preg_match('~^[0-9a-z_-]*$~', $_GET['segment3'])) $this->segment3 = $_GET['segment3'];
			else $check_segments = false;
		}
		if(!$check_segments) a_error('Ошибка регистрации сегментов!');
		return true;
	}
}
?>