225 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			PHP
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			225 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			PHP
		
	
	
		
			Executable File
		
	
	
	
	
<?php
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(defined('BASEPATH')) OR exit('No direct script access allowed');
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(defined('EXT')) OR define('EXT', '.php');
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global $CFG;
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/* get module locations from config settings or use the default module location and offset */
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is_array(Modules::$locations = $CFG->item('modules_locations')) OR Modules::$locations = array(
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    APPPATH . 'modules/' => '../modules/',
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);
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/* PHP5 spl_autoload */
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spl_autoload_register('Modules::autoload');
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/**
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 * Modular Extensions - HMVC
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 *
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 * Adapted from the CodeIgniter Core Classes
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 * @link	http://codeigniter.com
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 *
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 * Description:
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 * This library provides functions to load and instantiate controllers
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 * and module controllers allowing use of modules and the HMVC design pattern.
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 *
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 * Install this file as application/third_party/MX/Modules.php
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 *
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 * @copyright	Copyright (c) 2015 Wiredesignz
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 * @version 	5.5
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 * 
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 * 
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 * 
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 * */
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class Modules {
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    public static $routes, $registry, $locations;
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    /**
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     * Run a module controller method
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     * Output from module is buffered and returned.
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     * */
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    public static function run($module) {
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        $method = 'index';
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        if (($pos = strrpos($module, '/')) != FALSE) {
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            $method = substr($module, $pos + 1);
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            $module = substr($module, 0, $pos);
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        }
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        if ($class = self::load($module)) {
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            if (method_exists($class, $method)) {
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                ob_start();
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                $args = func_get_args();
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                $output = call_user_func_array(array($class, $method), array_slice($args, 1));
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                $buffer = ob_get_clean();
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                return ($output !== NULL) ? $output : $buffer;
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            }
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        }
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        log_message('error', "Module controller failed to run: {$module}/{$method}");
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    }
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    /** Load a module controller * */
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    public static function load($module) {
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        (is_array($module)) ? list($module, $params) = each($module) : $params = NULL;
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        /* get the requested controller class name */
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        $alias = strtolower(basename($module));
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        /* create or return an existing controller from the registry */
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        if (!isset(self::$registry[$alias])) {
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            /* find the controller */
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            list($class) = CI::$APP->router->locate(explode('/', $module));
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            /* controller cannot be located */
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            if (empty($class))
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                return;
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            /* set the module directory */
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            $path = APPPATH . 'controllers/' . CI::$APP->router->directory;
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            /* load the controller class */
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            $class = $class . CI::$APP->config->item('controller_suffix');
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            self::load_file(ucfirst($class), $path);
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            /* create and register the new controller */
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            $controller = ucfirst($class);
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            self::$registry[$alias] = new $controller($params);
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        }
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        return self::$registry[$alias];
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    }
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    /** Library base class autoload * */
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    public static function autoload($class) {
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        /* don't autoload CI_ prefixed classes or those using the config subclass_prefix */
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        if (strstr($class, 'CI_') OR strstr($class, config_item('subclass_prefix')))
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            return;
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        /* autoload Modular Extensions MX core classes */
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        if (strstr($class, 'MX_')) {
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            if (is_file($location = dirname(__FILE__) . '/' . substr($class, 3) . EXT)) {
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                include_once $location;
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                return;
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            }
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            show_error('Failed to load MX core class: ' . $class);
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        }
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        /* autoload core classes */
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        if (is_file($location = APPPATH . 'core/' . ucfirst($class) . EXT)) {
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            include_once $location;
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            return;
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        }
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        /* autoload library classes */
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        if (is_file($location = APPPATH . 'libraries/' . ucfirst($class) . EXT)) {
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            include_once $location;
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            return;
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        }
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    }
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    /** Load a module file * */
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    public static function load_file($file, $path, $type = 'other', $result = TRUE) {
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        $file = str_replace(EXT, '', $file);
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        $location = $path . $file . EXT;
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        if ($type === 'other') {
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            if (class_exists($file, FALSE)) {
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                log_message('debug', "File already loaded: {$location}");
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                return $result;
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            }
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            include_once $location;
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        } else {
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            /* load config or language array */
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            include $location;
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            if (!isset($$type) OR ! is_array($$type))
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                show_error("{$location} does not contain a valid {$type} array");
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            $result = $$type;
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        }
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        log_message('debug', "File loaded: {$location}");
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        return $result;
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    }
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    /**
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     * Find a file
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     * Scans for files located within modules directories.
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     * Also scans application directories for models, plugins and views.
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     * Generates fatal error if file not found.
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     * */
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    public static function find($file, $module, $base) {
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        $segments = explode('/', $file);
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        $file = array_pop($segments);
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        $file_ext = (pathinfo($file, PATHINFO_EXTENSION)) ? $file : $file . EXT;
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        $path = ltrim(implode('/', $segments) . '/', '/');
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        $module ? $modules[$module] = $path : $modules = array();
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        if (!empty($segments)) {
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            $modules[array_shift($segments)] = ltrim(implode('/', $segments) . '/', '/');
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        }
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        foreach (Modules::$locations as $location => $offset) {
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            foreach ($modules as $module => $subpath) {
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                $fullpath = $location . $module . '/' . $base . $subpath;
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                if ($base == 'libraries/' OR $base == 'models/') {
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                    if (is_file($fullpath . ucfirst($file_ext)))
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                        return array($fullpath, ucfirst($file));
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                }
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                else
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                /* load non-class files */
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                if (is_file($fullpath . $file_ext))
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                    return array($fullpath, $file);
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            }
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        }
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        return array(FALSE, $file);
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    }
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    /** Parse module routes * */
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    public static function parse_routes($module, $uri) {
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        /* load the route file */
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        if (!isset(self::$routes[$module])) {
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            if (list($path) = self::find('routes', $module, 'config/')) {
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                $path && self::$routes[$module] = self::load_file('routes', $path, 'route');
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            }
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        }
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        if (!isset(self::$routes[$module]))
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            return;
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        /* parse module routes */
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        foreach (self::$routes[$module] as $key => $val) {
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            $key = str_replace(array(':any', ':num'), array('.+', '[0-9]+'), $key);
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            if (preg_match('#^' . $key . '$#', $uri)) {
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                if (strpos($val, '$') !== FALSE AND strpos($key, '(') !== FALSE) {
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                    $val = preg_replace('#^' . $key . '$#', $val, $uri);
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                }
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                return explode('/', $module . '/' . $val);
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            }
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        }
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    }
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}
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