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<?php
namespace Engelsystem\Http;
use Nyholm\Psr7\Stream;
use Psr\Http\Message\StreamInterface;
/**
* @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()
{
$stream = Stream::create($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;
}
}
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