<?php
/**
 * ConsoleInputSubcommand file
 *
 * PHP 5
 *
 * 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
 */

/**
 * An object to represent a single subcommand used in the command line.
 * Created when you call ConsoleOptionParser::addSubcommand()
 *
 * @see ConsoleOptionParser::addSubcommand()
 * @package       Cake.Console
 */
class ConsoleInputSubcommand {

/**
 * Name of the subcommand
 *
 * @var string
 */
	protected $_name;

/**
 * Help string for the subcommand
 *
 * @var string
 */
	protected $_help;

/**
 * The ConsoleOptionParser for this subcommand.
 *
 * @var ConsoleOptionParser
 */
	protected $_parser;

/**
 * Make a new Subcommand
 *
 * @param string|array $name The long name of the subcommand, or an array with all the properties.
 * @param string $help The help text for this option
 * @param ConsoleOptionParser|array $parser A parser for this subcommand. Either a ConsoleOptionParser, or an array that can be
 *   used with ConsoleOptionParser::buildFromArray()
 */
	public function __construct($name, $help = '', $parser = null) {
		if (is_array($name) && isset($name['name'])) {
			foreach ($name as $key => $value) {
				$this->{'_' . $key} = $value;
			}
		} else {
			$this->_name = $name;
			$this->_help = $help;
			$this->_parser = $parser;
		}
		if (is_array($this->_parser)) {
			$this->_parser['command'] = $this->_name;
			$this->_parser = ConsoleOptionParser::buildFromArray($this->_parser);
		}
	}

/**
 * Get the value of the name attribute.
 *
 * @return string Value of this->_name.
 */
	public function name() {
		return $this->_name;
	}

/**
 * Generate the help for this this subcommand.
 *
 * @param integer $width The width to make the name of the subcommand.
 * @return string
 */
	public function help($width = 0) {
		$name = $this->_name;
		if (strlen($name) < $width) {
			$name = str_pad($name, $width, ' ');
		}
		return $name . $this->_help;
	}

/**
 * Get the usage value for this option
 *
 * @return mixed Either false or a ConsoleOptionParser
 */
	public function parser() {
		if ($this->_parser instanceof ConsoleOptionParser) {
			return $this->_parser;
		}
		return false;
	}

/**
 * Append this subcommand to the Parent element
 *
 * @param SimpleXmlElement $parent The parent element.
 * @return SimpleXmlElement The parent with this subcommand appended.
 */
	public function xml(SimpleXmlElement $parent) {
		$command = $parent->addChild('command');
		$command->addAttribute('name', $this->_name);
		$command->addAttribute('help', $this->_help);
		return $parent;
	}

}
