<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\Console\Input; use Symfony\Component\Console\Exception\InvalidArgumentException; use Symfony\Component\Console\Exception\LogicException; /** * Represents a command line argument. * * @author Fabien Potencier <fabien@symfony.com> */ class InputArgument { const REQUIRED = 1; const OPTIONAL = 2; const IS_ARRAY = 4; private $name; private $mode; private $default; private $description; /** * @param string $name The argument name * @param int $mode The argument mode: self::REQUIRED or self::OPTIONAL * @param string $description A description text * @param mixed $default The default value (for self::OPTIONAL mode only) * * @throws InvalidArgumentException When argument mode is not valid */ public function __construct($name, $mode = null, $description = '', $default = null) { if (null === $mode) { $mode = self::OPTIONAL; } elseif (!is_int($mode) || $mode > 7 || $mode < 1) { throw new InvalidArgumentException(sprintf('Argument mode "%s" is not valid.', $mode)); } $this->name = $name; $this->mode = $mode; $this->description = $description; $this->setDefault($default); } /** * Returns the argument name. * * @return string The argument name */ public function getName() { return $this->name; } /** * Returns true if the argument is required. * * @return bool true if parameter mode is self::REQUIRED, false otherwise */ public function isRequired() { return self::REQUIRED === (self::REQUIRED & $this->mode); } /** * Returns true if the argument can take multiple values. * * @return bool true if mode is self::IS_ARRAY, false otherwise */ public function isArray() { return self::IS_ARRAY === (self::IS_ARRAY & $this->mode); } /** * Sets the default value. * * @param mixed $default The default value * * @throws LogicException When incorrect default value is given */ public function setDefault($default = null) { if (self::REQUIRED === $this->mode && null !== $default) { throw new LogicException('Cannot set a default value except for InputArgument::OPTIONAL mode.'); } if ($this->isArray()) { if (null === $default) { $default = array(); } elseif (!is_array($default)) { throw new LogicException('A default value for an array argument must be an array.'); } } $this->default = $default; } /** * Returns the default value. * * @return mixed The default value */ public function getDefault() { return $this->default; } /** * Returns the description text. * * @return string The description text */ public function getDescription() { return $this->description; } }