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<?php
namespace RocketTheme\Toolbox\StreamWrapper;
use InvalidArgumentException;
/**
* Class StreamBuilder
* @package RocketTheme\Toolbox\StreamWrapper
*/
class StreamBuilder
{
/** @var array */
protected $items = [];
/**
* StreamBuilder constructor.
* @param string[] $items
* @throws InvalidArgumentException
*/
public function __construct(array $items = [])
{
foreach ($items as $scheme => $handler) {
$this->add($scheme, $handler);
}
}
/**
* @param string $scheme
* @param string $handler
* @return $this
* @throws InvalidArgumentException
*/
public function add($scheme, $handler)
{
if (isset($this->items[$scheme])) {
if ($handler === $this->items[$scheme]) {
return $this;
}
throw new InvalidArgumentException("Stream '{$scheme}' has already been initialized.");
}
if (!is_subclass_of($handler, StreamInterface::class)) {
throw new InvalidArgumentException("Stream '{$scheme}' has unknown or invalid type.");
}
if (!@stream_wrapper_register($scheme, $handler)) {
throw new InvalidArgumentException("Stream '{$scheme}' could not be initialized.");
}
$this->items[$scheme] = $handler;
return $this;
}
/**
* @param string $scheme
* @return $this
*/
public function remove($scheme)
{
if (isset($this->items[$scheme])) {
stream_wrapper_unregister($scheme);
unset($this->items[$scheme]);
}
return $this;
}
/**
* @return array
*/
public function getStreams()
{
return $this->items;
}
/**
* @param string $scheme
* @return bool
*/
public function isStream($scheme)
{
return isset($this->items[$scheme]);
}
/**
* @param string $scheme
* @return StreamInterface|null
*/
public function getStreamType($scheme)
{
return isset($this->items[$scheme]) ? $this->items[$scheme] : null;
}
}