<?php
/**
 *+-----------------------------------------------------------------------+
 *| CliParser v0.1 - 19 Jul 2006                                          |
 *+-----------------------------------------------------------------------+
 *|  Diego do Nascimento Feitosa                                          |
 *|  hide@address.com                                                  |
 *|  www.dnfeitosa.com                                                    |
 *|  São Paulo/SP - Brasil                                               | 
 *|  The latest version can be found at www.dnfeitosa.com                 | 
 *+-----------------------------------------------------------------------+
 *| CliParser is free software; you can redistribute it and/or modify     |
 *| it under the terms of the GNU General Public License as published by  |
 *| the Free Software Foundation; either version 2 of the License, or     |
 *| (at your option) any later version.                                   |
 *|                                                                       |
 *| CliParser is distributed in the hope that it will be useful, but      |
 *| WITHOUT ANY WARRANTY; without even the implied warranty of            |
 *| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     |
 *| General Public License for more details.                              |
 *|                                                                       |
 *| You should have received a copy of the GNU General Public License     |
 *| along with CliParser; if not, write to the Free Software              |
 *| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA              |
 *| 02111-1307  USA                                                       |
 *+-----------------------------------------------------------------------+
**/
abstract class CliToken {

	protected $token = null;
	protected $value = null;
	protected $description = null;
	protected $assigned = false;

	public function __construct($token) {
		$this->token = $token;
	}

	public function getToken() {
		return $this->token;
	}

	protected function setTokenValue($value) {
		$this->value = $value;
	}

	public function setValue($value) {
		if ($this->assignCondition($value)) {
			$this->setTokenValue($value);
		}
	}

	public function setDescription($message) {
		$this->description = $message;
	}

	public function getDescription() {
		return $this->description;
	}

	public function getHelpMessage() {
		return sprintf("\t%s\t%s\n", $this->token, $this->description);
	}

	public function getValue() {
		return $this->value;
	}

	abstract public function assignCondition($value);

	function isAssigned() {
		if (!is_null($this->value)) {
			$this->assigned = true;
		} else {
			$this->assigned = false;
		}
		return $this->assigned;
	}

}
?>