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Message.php
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<?php
namespace Sabre\HTTP;
/**
* This is the abstract base class for both the Request and Response objects.
*
* This object contains a few simple methods that are shared by both.
*
* @copyright Copyright (C) 2009-2015 fruux GmbH (https://fruux.com/).
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
abstract class Message implements MessageInterface {
/**
* Request body
*
* This should be a stream resource
*
* @var resource
*/
protected $body;
/**
* Contains the list of HTTP headers
*
* @var array
*/
protected $headers = [];
/**
* HTTP message version (1.0 or 1.1)
*
* @var string
*/
protected $httpVersion = '1.1';
/**
* Returns the body as a readable stream resource.
*
* Note that the stream may not be rewindable, and therefore may only be
* read once.
*
* @return resource
*/
function getBodyAsStream() {
$body = $this->getBody();
if (is_string($body) || is_null($body)) {
$stream = fopen('php://temp', 'r+');
fwrite($stream, $body);
rewind($stream);
return $stream;
}
return $body;
}
/**
* Returns the body as a string.
*
* Note that because the underlying data may be based on a stream, this
* method could only work correctly the first time.
*
* @return string
*/
function getBodyAsString() {
$body = $this->getBody();
if (is_string($body)) {
return $body;
}
if (is_null($body)) {
return '';
}
return stream_get_contents($body);
}
/**
* Returns the message body, as it's internal representation.
*
* This could be either a string or a stream.
*
* @return resource|string
*/
function getBody() {
return $this->body;
}
/**
* Replaces the body resource with a new stream or string.
*
* @param resource|string $body
*/
function setBody($body) {
$this->body = $body;
}
/**
* Returns all the HTTP headers as an array.
*
* Every header is returned as an array, with one or more values.
*
* @return array
*/
function getHeaders() {
$result = [];
foreach ($this->headers as $headerInfo) {
$result[$headerInfo[0]] = $headerInfo[1];
}
return $result;
}
/**
* Will return true or false, depending on if a HTTP header exists.
*
* @param string $name
* @return bool
*/
function hasHeader($name) {
return isset($this->headers[strtolower($name)]);
}
/**
* Returns a specific HTTP header, based on it's name.
*
* The name must be treated as case-insensitive.
* If the header does not exist, this method must return null.
*
* If a header appeared more than once in a HTTP request, this method will
* concatenate all the values with a comma.
*
* Note that this not make sense for all headers. Some, such as
* `Set-Cookie` cannot be logically combined with a comma. In those cases
* you *should* use getHeaderAsArray().
*
* @param string $name
* @return string|null
*/
function getHeader($name) {
$name = strtolower($name);
if (isset($this->headers[$name])) {
return implode(',', $this->headers[$name][1]);
}
return null;
}
/**
* Returns a HTTP header as an array.
*
* For every time the HTTP header appeared in the request or response, an
* item will appear in the array.
*
* If the header did not exists, this method will return an empty array.
*
* @param string $name
* @return string[]
*/
function getHeaderAsArray($name) {
$name = strtolower($name);
if (isset($this->headers[$name])) {
return $this->headers[$name][1];
}
return [];
}
/**
* Updates a HTTP header.
*
* The case-sensitity of the name value must be retained as-is.
*
* If the header already existed, it will be overwritten.
*
* @param string $name
* @param string|string[] $value
* @return void
*/
function setHeader($name, $value) {
$this->headers[strtolower($name)] = [$name, (array)$value];
}
/**
* Sets a new set of HTTP headers.
*
* The headers array should contain headernames for keys, and their value
* should be specified as either a string or an array.
*
* Any header that already existed will be overwritten.
*
* @param array $headers
* @return void
*/
function setHeaders(array $headers) {
foreach ($headers as $name => $value) {
$this->setHeader($name, $value);
}
}
/**
* Adds a HTTP header.
*
* This method will not overwrite any existing HTTP header, but instead add
* another value. Individual values can be retrieved with
* getHeadersAsArray.
*
* @param string $name
* @param string $value
* @return void
*/
function addHeader($name, $value) {
$lName = strtolower($name);
if (isset($this->headers[$lName])) {
$this->headers[$lName][1] = array_merge(
$this->headers[$lName][1],
(array)$value
);
} else {
$this->headers[$lName] = [
$name,
(array)$value
];
}
}
/**
* Adds a new set of HTTP headers.
*
* Any existing headers will not be overwritten.
*
* @param array $headers
* @return void
*/
function addHeaders(array $headers) {
foreach ($headers as $name => $value) {
$this->addHeader($name, $value);
}
}
/**
* Removes a HTTP header.
*
* The specified header name must be treated as case-insenstive.
* This method should return true if the header was successfully deleted,
* and false if the header did not exist.
*
* @return bool
*/
function removeHeader($name) {
$name = strtolower($name);
if (!isset($this->headers[$name])) {
return false;
}
unset($this->headers[$name]);
return true;
}
/**
* Sets the HTTP version.
*
* Should be 1.0 or 1.1.
*
* @param string $version
* @return void
*/
function setHttpVersion($version) {
$this->httpVersion = $version;
}
/**
* Returns the HTTP version.
*
* @return string
*/
function getHttpVersion() {
return $this->httpVersion;
}
}

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