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<?php
/**
* Slim Framework (https://slimframework.com)
*
* @license https://github.com/slimphp/Slim-Psr7/blob/master/LICENSE.md (MIT License)
*/
declare(strict_types=1);
namespace Slim\Psr7;
use InvalidArgumentException;
use Psr\Http\Message\MessageInterface;
use Psr\Http\Message\StreamInterface;
use Slim\Psr7\Interfaces\HeadersInterface;
use function array_keys;
use function header;
use function header_remove;
use function implode;
use function sprintf;
abstract class Message implements MessageInterface
{
/**
* @var string
*/
protected $protocolVersion = '1.1';
/**
* @var array
*/
protected static $validProtocolVersions = [
'1.0' => true,
'1.1' => true,
'2.0' => true,
'2' => true,
];
/**
* @var HeadersInterface
*/
protected $headers;
/**
* @var StreamInterface
*/
protected $body;
/**
* Disable magic setter to ensure immutability
*
* @param string $name The property name
* @param mixed $value The property value
*
* @return void
*/
public function __set($name, $value): void
{
// Do nothing
}
/**
* {@inheritdoc}
*/
public function getProtocolVersion(): string
{
return $this->protocolVersion;
}
/**
* @return static
* {@inheritdoc}
*/
public function withProtocolVersion($version)
{
if (!isset(self::$validProtocolVersions[$version])) {
throw new InvalidArgumentException(
'Invalid HTTP version. Must be one of: '
. implode(', ', array_keys(self::$validProtocolVersions))
);
}
$clone = clone $this;
$clone->protocolVersion = $version;
return $clone;
}
/**
* {@inheritdoc}
*/
public function getHeaders(): array
{
return $this->headers->getHeaders(true);
}
/**
* {@inheritdoc}
*/
public function hasHeader($name): bool
{
return $this->headers->hasHeader($name);
}
/**
* {@inheritdoc}
*/
public function getHeader($name): array
{
return $this->headers->getHeader($name);
}
/**
* {@inheritdoc}
*/
public function getHeaderLine($name): string
{
$values = $this->headers->getHeader($name);
return implode(',', $values);
}
/**
* @return static
* {@inheritdoc}
*/
public function withHeader($name, $value)
{
$clone = clone $this;
$clone->headers->setHeader($name, $value);
if ($this instanceof Response && $this->body instanceof NonBufferedBody) {
header(sprintf('%s: %s', $name, $clone->getHeaderLine($name)));
}
return $clone;
}
/**
* @return static
* {@inheritdoc}
*/
public function withAddedHeader($name, $value)
{
$clone = clone $this;
$clone->headers->addHeader($name, $value);
if ($this instanceof Response && $this->body instanceof NonBufferedBody) {
header(sprintf('%s: %s', $name, $clone->getHeaderLine($name)));
}
return $clone;
}
/**
* @return static
* {@inheritdoc}
*/
public function withoutHeader($name)
{
$clone = clone $this;
$clone->headers->removeHeader($name);
if ($this instanceof Response && $this->body instanceof NonBufferedBody) {
header_remove($name);
}
return $clone;
}
/**
* {@inheritdoc}
*/
public function getBody(): StreamInterface
{
return $this->body;
}
/**
* @return static
* {@inheritdoc}
*/
public function withBody(StreamInterface $body)
{
$clone = clone $this;
$clone->body = $body;
return $clone;
}
}
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