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<?php |
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/** |
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* Linna Psr7. |
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* |
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* @author Sebastian Rapetti <[email protected]> |
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* @copyright (c) 2018, Sebastian Rapetti |
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* @license http://opensource.org/licenses/MIT MIT License |
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*/ |
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declare(strict_types=1); |
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namespace Linna\Psr7; |
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use Linna\TypedArray; |
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use Psr\Http\Message\MessageInterface; |
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use Psr\Http\Message\StreamInterface; |
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/** |
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* HTTP Psr7 Message implementation |
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*/ |
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abstract class Message implements MessageInterface |
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{ |
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/** |
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* @var string Protocol version. |
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*/ |
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protected $protocolVersion = '1.1'; |
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/** |
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* @var array Allowed protocol versions. |
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*/ |
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protected static $allowedProtocolVersions = [ |
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'1.0' => true, |
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'1.1' => true, |
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'2.0' => true, |
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]; |
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/** |
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* @var array Message headers . |
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*/ |
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protected $headers = []; |
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/** |
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* @var StreamInterface Body of the message. |
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*/ |
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protected $body; |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getProtocolVersion() : string |
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{ |
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return $this->protocolVersion; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function withProtocolVersion(string $version) : MessageInterface |
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{ |
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if (!isset(self::$validProtocolVersions[$version])) { |
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throw new InvalidArgumentException(__CLASS__.': Invalid HTTP protocol version. Must be 1.0, 1.1 or 2.0'); |
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} |
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$new = clone $this; |
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$new->protocolVersion = $version; |
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return $new; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getHeaders() : array |
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{ |
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return $this->headers; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function hasHeader(string $name) : bool |
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{ |
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$this->normalize($name); |
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return isset($this->headers[$name]); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getHeader(string $name) : array |
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{ |
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$this->normalize($name); |
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return isset($this->headers[$name]) ? $this->headers[$name] : []; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getHeaderLine(string $name) : string |
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{ |
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$this->normalize($name); |
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return isset($this->headers[$name]) ? implode(', ', $this->headers[$name]) : ''; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function withHeader(string $name, array $value) : MessageInterface |
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{ |
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$this->normalize($name); |
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$new = clone $this; |
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//use typed array for assicure that array contains only strings |
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$new->headers[$name] = (new TypedArray('string', $value))->getArrayCopy(); |
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return $new; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function withAddedHeader(string $name, array $value) : MessageInterface |
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{ |
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$this->normalize($name); |
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//use typed array for assicure that array contains only strings |
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$headerValue = (new TypedArray('string', $value))->getArrayCopy(); |
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$new = clone $this; |
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//check if header exist |
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if (!isset($this->headers[$name])) { |
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$new->headers[$name] = $headerValue; |
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return $new; |
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} |
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//at this point header exists |
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//remain only to append new value to existing header |
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$new->headers[$name] = array_merge($this->headers[$name], $headerValue); |
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return $new; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function withoutHeader(string $name) : MessageInterface |
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{ |
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$this->normalize($name); |
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$new = clone $this; |
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unset($new->headers[$name]); |
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return $new; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getBody() : StreamInterface |
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{ |
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return $this->body; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function withBody(StreamInterface $body) : MessageInterface |
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{ |
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$new = clone $this; |
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$new->body = $body; |
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return $new; |
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} |
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/** |
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* Normalize header name for case-unsensitive search. |
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* |
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* @param string $headerName |
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*/ |
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private function normalize(string &$headerName) |
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{ |
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$headerName = ucwords(strtolower($headerName), '-'); |
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} |
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} |
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