dreamjob/lib/Cake/Console/TaskCollection.php

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2014-02-18 12:10:29 +01:00
<?php
/**
* Task collection is used as a registry for loaded tasks and handles loading
* and constructing task class objects.
*
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
* @link http://cakephp.org CakePHP(tm) Project
* @since CakePHP(tm) v 2.0
* @license http://www.opensource.org/licenses/mit-license.php MIT License
*/
App::uses('ObjectCollection', 'Utility');
/**
* Collection object for Tasks. Provides features
* for lazily loading tasks, and firing callbacks on loaded tasks.
*
* @package Cake.Console
*/
class TaskCollection extends ObjectCollection {
/**
* Shell to use to set params to tasks.
*
* @var Shell
*/
protected $_Shell;
/**
* The directory inside each shell path that contains tasks.
*
* @var string
*/
public $taskPathPrefix = 'tasks/';
/**
* Constructor
*
* @param Shell $Shell
*/
public function __construct(Shell $Shell) {
$this->_Shell = $Shell;
}
/**
* Loads/constructs a task. Will return the instance in the registry if it already exists.
*
* You can alias your task as an existing task by setting the 'className' key, i.e.,
* {{{
* public $tasks = array(
* 'DbConfig' => array(
* 'className' => 'Bakeplus.DbConfigure'
* );
* );
* }}}
* All calls to the `DbConfig` task would use `DbConfigure` found in the `Bakeplus` plugin instead.
*
* @param string $task Task name to load
* @param array $settings Settings for the task.
* @return Task A task object, Either the existing loaded task or a new one.
* @throws MissingTaskException when the task could not be found
*/
public function load($task, $settings = array()) {
if (is_array($settings) && isset($settings['className'])) {
$alias = $task;
$task = $settings['className'];
}
list($plugin, $name) = pluginSplit($task, true);
if (!isset($alias)) {
$alias = $name;
}
if (isset($this->_loaded[$alias])) {
return $this->_loaded[$alias];
}
$taskClass = $name . 'Task';
App::uses($taskClass, $plugin . 'Console/Command/Task');
$exists = class_exists($taskClass);
if (!$exists) {
throw new MissingTaskException(array(
'class' => $taskClass,
'plugin' => substr($plugin, 0, -1)
));
}
$this->_loaded[$alias] = new $taskClass(
$this->_Shell->stdout, $this->_Shell->stderr, $this->_Shell->stdin
);
return $this->_loaded[$alias];
}
}