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<?php
/**
* ShellDispatcher file
*
* PHP 5
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since CakePHP(tm) v 2.0
* @license MIT License (http://www.opensource.org/licenses/mit-license.php)
*/
/**
* Shell dispatcher handles dispatching cli commands.
*
* @package Cake.Console
*/
class ShellDispatcher {
/**
* Contains command switches parsed from the command line.
*
* @var array
*/
public $params = array();
/**
* Contains arguments parsed from the command line.
*
* @var array
*/
public $args = array();
/**
* Constructor
*
* The execution of the script is stopped after dispatching the request with
* a status code of either 0 or 1 according to the result of the dispatch.
*
* @param array $args the argv from PHP
* @param boolean $bootstrap Should the environment be bootstrapped.
*/
public function __construct($args = array(), $bootstrap = true) {
set_time_limit(0);
if ($bootstrap) {
$this->_initConstants();
}
$this->parseParams($args);
if ($bootstrap) {
$this->_initEnvironment();
}
}
/**
* Run the dispatcher
*
* @param array $argv The argv from PHP
* @return void
*/
public static function run($argv) {
$dispatcher = new ShellDispatcher($argv);
$dispatcher->_stop($dispatcher->dispatch() === false ? 1 : 0);
}
/**
* Defines core configuration.
*
* @return void
*/
protected function _initConstants() {
if (function_exists('ini_set')) {
ini_set('html_errors', false);
ini_set('implicit_flush', true);
ini_set('max_execution_time', 0);
}
if (!defined('CAKE_CORE_INCLUDE_PATH')) {
define('DS', DIRECTORY_SEPARATOR);
define('CAKE_CORE_INCLUDE_PATH', dirname(dirname(dirname(__FILE__))));
define('CAKEPHP_SHELL', true);
if (!defined('CORE_PATH')) {
define('CORE_PATH', CAKE_CORE_INCLUDE_PATH . DS);
}
}
}
/**
* Defines current working environment.
*
* @return void
* @throws CakeException
*/
protected function _initEnvironment() {
if (!$this->_bootstrap()) {
$message = "Unable to load CakePHP core.\nMake sure " . DS . 'lib' . DS . 'Cake exists in ' . CAKE_CORE_INCLUDE_PATH;
throw new CakeException($message);
}
if (!isset($this->args[0]) || !isset($this->params['working'])) {
$message = "This file has been loaded incorrectly and cannot continue.\n" .
"Please make sure that " . DS . 'lib' . DS . 'Cake' . DS . "Console is in your system path,\n" .
"and check the cookbook for the correct usage of this command.\n" .
"(http://book.cakephp.org/)";
throw new CakeException($message);
}
$this->shiftArgs();
}
/**
* Initializes the environment and loads the Cake core.
*
* @return boolean Success.
*/
protected function _bootstrap() {
define('ROOT', $this->params['root']);
define('APP_DIR', $this->params['app']);
define('APP', $this->params['working'] . DS);
define('WWW_ROOT', APP . $this->params['webroot'] . DS);
if (!is_dir(ROOT . DS . APP_DIR . DS . 'tmp')) {
define('TMP', CAKE_CORE_INCLUDE_PATH . DS . 'Cake' . DS . 'Console' . DS . 'Templates' . DS . 'skel' . DS . 'tmp' . DS);
}
$boot = file_exists(ROOT . DS . APP_DIR . DS . 'Config' . DS . 'bootstrap.php');
require CORE_PATH . 'Cake' . DS . 'bootstrap.php';
if (!file_exists(APP . 'Config' . DS . 'core.php')) {
include_once CAKE_CORE_INCLUDE_PATH . DS . 'Cake' . DS . 'Console' . DS . 'Templates' . DS . 'skel' . DS . 'Config' . DS . 'core.php';
App::build();
}
require_once CAKE . 'Console' . DS . 'ConsoleErrorHandler.php';
$ErrorHandler = new ConsoleErrorHandler();
set_exception_handler(array($ErrorHandler, 'handleException'));
set_error_handler(array($ErrorHandler, 'handleError'), Configure::read('Error.level'));
if (!defined('FULL_BASE_URL')) {
define('FULL_BASE_URL', 'http://localhost');
}
return true;
}
/**
* Dispatches a CLI request
*
* @return boolean
* @throws MissingShellMethodException
*/
public function dispatch() {
$shell = $this->shiftArgs();
if (!$shell) {
$this->help();
return false;
}
if (in_array($shell, array('help', '--help', '-h'))) {
$this->help();
return true;
}
$Shell = $this->_getShell($shell);
$command = null;
if (isset($this->args[0])) {
$command = $this->args[0];
}
if ($Shell instanceof Shell) {
$Shell->initialize();
$Shell->loadTasks();
return $Shell->runCommand($command, $this->args);
}
$methods = array_diff(get_class_methods($Shell), get_class_methods('Shell'));
$added = in_array($command, $methods);
$private = $command[0] == '_' && method_exists($Shell, $command);
if (!$private) {
if ($added) {
$this->shiftArgs();
$Shell->startup();
return $Shell->{$command}();
}
if (method_exists($Shell, 'main')) {
$Shell->startup();
return $Shell->main();
}
}
throw new MissingShellMethodException(array('shell' => $shell, 'method' => $arg));
}
/**
* Get shell to use, either plugin shell or application shell
*
* All paths in the loaded shell paths are searched.
*
* @param string $shell Optionally the name of a plugin
* @return mixed An object
* @throws MissingShellException when errors are encountered.
*/
protected function _getShell($shell) {
list($plugin, $shell) = pluginSplit($shell, true);
$plugin = Inflector::camelize($plugin);
$class = Inflector::camelize($shell) . 'Shell';
App::uses('Shell', 'Console');
App::uses('AppShell', 'Console');
App::uses($class, $plugin . 'Console/Command');
if (!class_exists($class)) {
throw new MissingShellException(array(
'class' => $class
));
}
$Shell = new $class();
return $Shell;
}
/**
* Parses command line options and extracts the directory paths from $params
*
* @param array $args Parameters to parse
* @return void
*/
public function parseParams($args) {
$this->_parsePaths($args);
$defaults = array(
'app' => 'app',
'root' => dirname(dirname(dirname(dirname(__FILE__)))),
'working' => null,
'webroot' => 'webroot'
);
$params = array_merge($defaults, array_intersect_key($this->params, $defaults));
$isWin = false;
foreach ($defaults as $default => $value) {
if (strpos($params[$default], '\\') !== false) {
$isWin = true;
break;
}
}
$params = str_replace('\\', '/', $params);
if (isset($params['working'])) {
$params['working'] = trim($params['working']);
}
if (!empty($params['working']) && (!isset($this->args[0]) || isset($this->args[0]) && $this->args[0]{0} !== '.')) {
if (empty($this->params['app']) && $params['working'] != $params['root']) {
$params['root'] = dirname($params['working']);
$params['app'] = basename($params['working']);
} else {
$params['root'] = $params['working'];
}
}
if ($params['app'][0] == '/' || preg_match('/([a-z])(:)/i', $params['app'], $matches)) {
$params['root'] = dirname($params['app']);
} elseif (strpos($params['app'], '/')) {
$params['root'] .= '/' . dirname($params['app']);
}
$params['app'] = basename($params['app']);
$params['working'] = rtrim($params['root'], '/');
if (!$isWin || !preg_match('/^[A-Z]:$/i', $params['app'])) {
$params['working'] .= '/' . $params['app'];
}
if (!empty($matches[0]) || !empty($isWin)) {
$params = str_replace('/', '\\', $params);
}
$this->params = array_merge($this->params, $params);
}
/**
* Parses out the paths from from the argv
*
* @param array $args
* @return void
*/
protected function _parsePaths($args) {
$parsed = array();
$keys = array('-working', '--working', '-app', '--app', '-root', '--root');
foreach ($keys as $key) {
while (($index = array_search($key, $args)) !== false) {
$keyname = str_replace('-', '', $key);
$valueIndex = $index + 1;
$parsed[$keyname] = $args[$valueIndex];
array_splice($args, $index, 2);
}
}
$this->args = $args;
$this->params = $parsed;
}
/**
* Removes first argument and shifts other arguments up
*
* @return mixed Null if there are no arguments otherwise the shifted argument
*/
public function shiftArgs() {
return array_shift($this->args);
}
/**
* Shows console help. Performs an internal dispatch to the CommandList Shell
*
* @return void
*/
public function help() {
$this->args = array_merge(array('command_list'), $this->args);
$this->dispatch();
}
/**
* Stop execution of the current script
*
* @param integer|string $status see http://php.net/exit for values
* @return void
*/
protected function _stop($status = 0) {
exit($status);
}
}
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