<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* 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 option.
*
* @author Fabien Potencier <[email protected]>
*/
class InputOption
{
/**
* Do not accept input for the option (e.g. --yell). This is the default behavior of options.
*/
public const VALUE_NONE = 1;
/**
* A value must be passed when the option is used (e.g. --iterations=5 or -i5).
*/
public const VALUE_REQUIRED = 2;
/**
* The option may or may not have a value (e.g. --yell or --yell=loud).
*/
public const VALUE_OPTIONAL = 4;
/**
* The option accepts multiple values (e.g. --dir=/foo --dir=/bar).
*/
public const VALUE_IS_ARRAY = 8;
/**
* The option may have either positive or negative value (e.g. --ansi or --no-ansi).
*/
public const VALUE_NEGATABLE = 16;
private $name;
private $shortcut;
private $mode;
private $default;
private $description;
/**
* @param string $name The option name
* @param string|array|null $shortcut The shortcuts, can be null, a string of shortcuts delimited by | or an array of shortcuts
* @param int|null $mode The option mode: One of the VALUE_* constants
* @param string $description A description text
* @param string|string[]|bool|null $default The default value (must be null for self::VALUE_NONE)
*
* @throws InvalidArgumentException If option mode is invalid or incompatible
*/
public function __construct(string $name, $shortcut = null, int $mode = null, string $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) {
$mode = self::VALUE_NONE;
} elseif ($mode >= (self::VALUE_NEGATABLE << 1) || $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() && !$this->acceptValue()) {
throw new InvalidArgumentException('Impossible to have an option mode VALUE_IS_ARRAY if the option does not accept a value.');
}
if ($this->isNegatable() && $this->acceptValue()) {
throw new InvalidArgumentException('Impossible to have an option mode VALUE_NEGATABLE if the option also accepts a value.');
}
$this->setDefault($default);
}
/**
* Returns the option shortcut.
*
* @return string|null 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 bool 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 bool 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 bool 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 bool true if mode is self::VALUE_IS_ARRAY, false otherwise
*/
public function isArray()
{
return self::VALUE_IS_ARRAY === (self::VALUE_IS_ARRAY & $this->mode);
}
public function isNegatable(): bool
{
return self::VALUE_NEGATABLE === (self::VALUE_NEGATABLE & $this->mode);
}
/**
* Sets the default value.
*
* @param string|string[]|bool|null $default The default value
*
* @throws LogicException When incorrect default value is given
*/
public function setDefault($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) {
$default = [];
} elseif (!\is_array($default)) {
throw new LogicException('A default value for an array option must be an array.');
}
}
$this->default = $this->acceptValue() || $this->isNegatable() ? $default : false;
}
/**
* Returns the default value.
*
* @return string|string[]|bool|null 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.
*
* @return bool
*/
public function equals(self $option)
{
return $option->getName() === $this->getName()
&& $option->getShortcut() === $this->getShortcut()
&& $option->getDefault() === $this->getDefault()
&& $option->isNegatable() === $this->isNegatable()
&& $option->isArray() === $this->isArray()
&& $option->isValueRequired() === $this->isValueRequired()
&& $option->isValueOptional() === $this->isValueOptional()
;
}
}