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<?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;
/**
* Represents a command line option.
*
* @author Fabien Potencier <fabien@symfony.com>
*
* @api
*/
class InputOption
{
const VALUE_NONE = 1;
const VALUE_REQUIRED = 2;
const VALUE_OPTIONAL = 4;
const VALUE_IS_ARRAY = 8;
private $name;
private $shortcut;
private $mode;
private $default;
private $description;
/**
* Constructor.
*
* @param string $name The option name
* @param string|array $shortcut The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
* @param integer $mode The option mode: One of the VALUE_* constants
* @param string $description A description text
* @param mixed $default The default value (must be null for self::VALUE_REQUIRED or self::VALUE_NONE)
*
* @throws \InvalidArgumentException If option mode is invalid or incompatible
*
* @api
*/
public function __construct($name, $shortcut = null, $mode = null, $description = '', $default = null)
{
if (0 === strpos($name, '--')) {
$name = substr($name, 2);
}
if (empty($name)) {
throw new \InvalidArgumentException('An option name cannot be empty.');
}
if (empty($shortcut)) {
$shortcut = null;
}
if (null !== $shortcut) {
if (is_array($shortcut)) {
$shortcut = implode('|', $shortcut);
}
$shortcuts = preg_split('{(\|)-?}', ltrim($shortcut, '-'));
$shortcuts = array_filter($shortcuts);
$shortcut = implode('|', $shortcuts);
if (empty($shortcut)) {
throw new \InvalidArgumentException('An option shortcut cannot be empty.');
}
}
if (null === $mode) {
$mode = self::VALUE_NONE;
} elseif (!is_int($mode) || $mode > 15 || $mode < 1) {
throw new \InvalidArgumentException(sprintf('Option mode "%s" is not valid.', $mode));
}
$this->name = $name;
$this->shortcut = $shortcut;
$this->mode = $mode;
$this->description = $description;
if ($this->isArray() && !$this->acceptValue()) {
throw new \InvalidArgumentException('Impossible to have an option mode VALUE_IS_ARRAY if the option does not accept a value.');
}
$this->setDefault($default);
}
/**
* Returns the option shortcut.
*
* @return string The shortcut
*/
public function getShortcut()
{
return $this->shortcut;
}
/**
* Returns the option name.
*
* @return string The name
*/
public function getName()
{
return $this->name;
}
/**
* Returns true if the option accepts a value.
*
* @return Boolean true if value mode is not self::VALUE_NONE, false otherwise
*/
public function acceptValue()
{
return $this->isValueRequired() || $this->isValueOptional();
}
/**
* Returns true if the option requires a value.
*
* @return Boolean true if value mode is self::VALUE_REQUIRED, false otherwise
*/
public function isValueRequired()
{
return self::VALUE_REQUIRED === (self::VALUE_REQUIRED & $this->mode);
}
/**
* Returns true if the option takes an optional value.
*
* @return Boolean true if value mode is self::VALUE_OPTIONAL, false otherwise
*/
public function isValueOptional()
{
return self::VALUE_OPTIONAL === (self::VALUE_OPTIONAL & $this->mode);
}
/**
* Returns true if the option can take multiple values.
*
* @return Boolean true if mode is self::VALUE_IS_ARRAY, false otherwise
*/
public function isArray()
{
return self::VALUE_IS_ARRAY === (self::VALUE_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::VALUE_NONE === (self::VALUE_NONE & $this->mode) && null !== $default) {
throw new \LogicException('Cannot set a default value when using InputOption::VALUE_NONE mode.');
}
if ($this->isArray()) {
if (null === $default) {
$default = array();
} elseif (!is_array($default)) {
throw new \LogicException('A default value for an array option must be an array.');
}
}
$this->default = $this->acceptValue() ? $default : false;
}
/**
* 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;
}
/**
* Checks whether the given option equals this one
*
* @param InputOption $option option to compare
* @return Boolean
*/
public function equals(InputOption $option)
{
return $option->getName() === $this->getName()
&& $option->getShortcut() === $this->getShortcut()
&& $option->getDefault() === $this->getDefault()
&& $option->isArray() === $this->isArray()
&& $option->isValueRequired() === $this->isValueRequired()
&& $option->isValueOptional() === $this->isValueOptional()
;
}
}