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Diffstat (limited to 'src/Http/MessageTrait.php')
| -rw-r--r-- | src/Http/MessageTrait.php | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/src/Http/MessageTrait.php b/src/Http/MessageTrait.php new file mode 100644 index 00000000..e46d291e --- /dev/null +++ b/src/Http/MessageTrait.php @@ -0,0 +1,248 @@ +<?php + +namespace Engelsystem\Http; + + +use Psr\Http\Message\StreamInterface; +use Zend\Diactoros\Stream; + +/** + * @implements \Psr\Http\Message\MessageInterface + * @extends \Symfony\Component\HttpFoundation\Response + */ +trait MessageTrait +{ + /** + * Retrieves the HTTP protocol version as a string. + * + * The string MUST contain only the HTTP version number (e.g., "1.1", "1.0"). + * + * @return string HTTP protocol version. + */ + public function getProtocolVersion() + { + return parent::getProtocolVersion(); + } + + /** + * Return an instance with the specified HTTP protocol version. + * + * The version string MUST contain only the HTTP version number (e.g., + * "1.1", "1.0"). + * + * This method MUST be implemented in such a way as to retain the + * immutability of the message, and MUST return an instance that has the + * new protocol version. + * + * @param string $version HTTP protocol version + * @return static + */ + public function withProtocolVersion($version) + { + $new = clone $this; + if (method_exists($new, 'setProtocolVersion')) { + $new->setProtocolVersion($version); + } else { + $new->server->set('SERVER_PROTOCOL', $version); + } + + return $new; + } + + /** + * Retrieves all message header values. + * + * The keys represent the header name as it will be sent over the wire, and + * each value is an array of strings associated with the header. + * + * // Represent the headers as a string + * foreach ($message->getHeaders() as $name => $values) { + * echo $name . ": " . implode(", ", $values); + * } + * + * // Emit headers iteratively: + * foreach ($message->getHeaders() as $name => $values) { + * foreach ($values as $value) { + * header(sprintf('%s: %s', $name, $value), false); + * } + * } + * + * While header names are not case-sensitive, getHeaders() will preserve the + * exact case in which headers were originally specified. + * + * @return string[][] Returns an associative array of the message's headers. Each + * key MUST be a header name, and each value MUST be an array of strings + * for that header. + */ + public function getHeaders() + { + if (method_exists($this->headers, 'allPreserveCase')) { + return $this->headers->allPreserveCase(); + } + + return $this->headers->all(); + } + + /** + * Checks if a header exists by the given case-insensitive name. + * + * @param string $name Case-insensitive header field name. + * @return bool Returns true if any header names match the given header + * name using a case-insensitive string comparison. Returns false if + * no matching header name is found in the message. + */ + public function hasHeader($name) + { + return $this->headers->has($name); + } + + /** + * Retrieves a message header value by the given case-insensitive name. + * + * This method returns an array of all the header values of the given + * case-insensitive header name. + * + * If the header does not appear in the message, this method MUST return an + * empty array. + * + * @param string $name Case-insensitive header field name. + * @return string[] An array of string values as provided for the given + * header. If the header does not appear in the message, this method MUST + * return an empty array. + */ + public function getHeader($name) + { + return $this->headers->get($name, null, false); + } + + /** + * Retrieves a comma-separated string of the values for a single header. + * + * This method returns all of the header values of the given + * case-insensitive header name as a string concatenated together using + * a comma. + * + * NOTE: Not all header values may be appropriately represented using + * comma concatenation. For such headers, use getHeader() instead + * and supply your own delimiter when concatenating. + * + * If the header does not appear in the message, this method MUST return + * an empty string. + * + * @param string $name Case-insensitive header field name. + * @return string A string of values as provided for the given header + * concatenated together using a comma. If the header does not appear in + * the message, this method MUST return an empty string. + */ + public function getHeaderLine($name) + { + return implode(',', $this->getHeader($name)); + } + + /** + * Return an instance with the provided value replacing the specified header. + * + * While header names are case-insensitive, the casing of the header will + * be preserved by this function, and returned from getHeaders(). + * + * This method MUST be implemented in such a way as to retain the + * immutability of the message, and MUST return an instance that has the + * new and/or updated header and value. + * + * @param string $name Case-insensitive header field name. + * @param string|string[] $value Header value(s). + * @return static + * @throws \InvalidArgumentException for invalid header names or values. + */ + public function withHeader($name, $value) + { + $new = clone $this; + $new->headers->set($name, $value); + + return $new; + } + + /** + * Return an instance with the specified header appended with the given value. + * + * Existing values for the specified header will be maintained. The new + * value(s) will be appended to the existing list. If the header did not + * exist previously, it will be added. + * + * This method MUST be implemented in such a way as to retain the + * immutability of the message, and MUST return an instance that has the + * new header and/or value. + * + * @param string $name Case-insensitive header field name to add. + * @param string|string[] $value Header value(s). + * @return static + * @throws \InvalidArgumentException for invalid header names or values. + */ + public function withAddedHeader($name, $value) + { + $new = clone $this; + $new->headers->set($name, $value, false); + + return $new; + } + + /** + * Return an instance without the specified header. + * + * Header resolution MUST be done without case-sensitivity. + * + * This method MUST be implemented in such a way as to retain the + * immutability of the message, and MUST return an instance that removes + * the named header. + * + * @param string $name Case-insensitive header field name to remove. + * @return static + */ + public function withoutHeader($name) + { + $new = clone $this; + $new->headers->remove($name); + + return $new; + } + + /** + * Gets the body of the message. + * + * @return StreamInterface Returns the body as a stream. + */ + public function getBody() + { + $stream = new Stream('php://memory', 'wb+'); + $stream->write($this->getContent()); + $stream->rewind(); + + return $stream; + } + + /** + * Return an instance with the specified message body. + * + * The body MUST be a StreamInterface object. + * + * This method MUST be implemented in such a way as to retain the + * immutability of the message, and MUST return a new instance that has the + * new body stream. + * + * @param StreamInterface $body Body. + * @return static + * @throws \InvalidArgumentException When the body is not valid. + */ + public function withBody(StreamInterface $body) + { + $new = clone $this; + + if (method_exists($new, 'setContent')) { + $new->setContent($body); + } else { + $new->content = $body; + } + + return $new; + } +} |