109 lines
2.4 KiB
PHP
109 lines
2.4 KiB
PHP
<?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\Helper;
|
|
|
|
use Symfony\Component\Console\Command\Command;
|
|
use Symfony\Component\Console\Exception\InvalidArgumentException;
|
|
|
|
/**
|
|
* HelperSet represents a set of helpers to be used with a command.
|
|
*
|
|
* @author Fabien Potencier <fabien@symfony.com>
|
|
*/
|
|
class HelperSet implements \IteratorAggregate
|
|
{
|
|
/**
|
|
* @var Helper[]
|
|
*/
|
|
private $helpers = array();
|
|
private $command;
|
|
|
|
/**
|
|
* @param Helper[] $helpers An array of helper
|
|
*/
|
|
public function __construct(array $helpers = array())
|
|
{
|
|
foreach ($helpers as $alias => $helper) {
|
|
$this->set($helper, is_int($alias) ? null : $alias);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets a helper.
|
|
*
|
|
* @param HelperInterface $helper The helper instance
|
|
* @param string $alias An alias
|
|
*/
|
|
public function set(HelperInterface $helper, $alias = null)
|
|
{
|
|
$this->helpers[$helper->getName()] = $helper;
|
|
if (null !== $alias) {
|
|
$this->helpers[$alias] = $helper;
|
|
}
|
|
|
|
$helper->setHelperSet($this);
|
|
}
|
|
|
|
/**
|
|
* Returns true if the helper if defined.
|
|
*
|
|
* @param string $name The helper name
|
|
*
|
|
* @return bool true if the helper is defined, false otherwise
|
|
*/
|
|
public function has($name)
|
|
{
|
|
return isset($this->helpers[$name]);
|
|
}
|
|
|
|
/**
|
|
* Gets a helper value.
|
|
*
|
|
* @param string $name The helper name
|
|
*
|
|
* @return HelperInterface The helper instance
|
|
*
|
|
* @throws InvalidArgumentException if the helper is not defined
|
|
*/
|
|
public function get($name)
|
|
{
|
|
if (!$this->has($name)) {
|
|
throw new InvalidArgumentException(sprintf('The helper "%s" is not defined.', $name));
|
|
}
|
|
|
|
return $this->helpers[$name];
|
|
}
|
|
|
|
public function setCommand(Command $command = null)
|
|
{
|
|
$this->command = $command;
|
|
}
|
|
|
|
/**
|
|
* Gets the command associated with this helper set.
|
|
*
|
|
* @return Command A Command instance
|
|
*/
|
|
public function getCommand()
|
|
{
|
|
return $this->command;
|
|
}
|
|
|
|
/**
|
|
* @return Helper[]
|
|
*/
|
|
public function getIterator()
|
|
{
|
|
return new \ArrayIterator($this->helpers);
|
|
}
|
|
}
|