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