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<?php
/**
* ownCloud - App Framework
*
* @author Bernhard Posselt, Thomas Tanghus, Bart Visscher
* @copyright 2012 Bernhard Posselt nukeawhale@gmail.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCP\AppFramework\Http;
/**
* Base class for responses. Also used to just send headers.
*
* It handles headers, HTTP status code, last modified and ETag.
*/
class Response {
/**
* Headers - defaults to ['Cache-Control' => 'no-cache, must-revalidate']
* @var array
*/
private $headers = array(
'Cache-Control' => 'no-cache, must-revalidate'
);
/**
* HTTP status code - defaults to STATUS OK
* @var string
*/
private $status = Http::STATUS_OK;
/**
* Last modified date
* @var \DateTime
*/
private $lastModified;
/**
* ETag
* @var string
*/
private $ETag;
/**
* Caches the response
* @param int $cacheSeconds the amount of seconds that should be cached
* if 0 then caching will be disabled
*/
public function cacheFor($cacheSeconds) {
if($cacheSeconds > 0) {
$this->addHeader('Cache-Control', 'max-age=' . $cacheSeconds .
', must-revalidate');
} else {
$this->addHeader('Cache-Control', 'no-cache, must-revalidate');
}
}
/**
* Adds a new header to the response that will be called before the render
* function
* @param string $name The name of the HTTP header
* @param string $value The value, null will delete it
*/
public function addHeader($name, $value) {
if(is_null($value)) {
unset($this->headers[$name]);
} else {
$this->headers[$name] = $value;
}
}
/**
* Returns the set headers
* @return array the headers
*/
public function getHeaders() {
$mergeWith = array();
if($this->lastModified) {
$mergeWith['Last-Modified'] =
$this->lastModified->format(\DateTime::RFC2822);
}
if($this->ETag) {
$mergeWith['ETag'] = '"' . $this->ETag . '"';
}
return array_merge($mergeWith, $this->headers);
}
/**
* By default renders no output
* @return null
*/
public function render() {
return null;
}
/**
* Set response status
* @param int $status a HTTP status code, see also the STATUS constants
*/
public function setStatus($status) {
$this->status = $status;
}
/**
* Get response status
*/
public function getStatus() {
return $this->status;
}
/**
* Get the ETag
* @return string the etag
*/
public function getETag() {
return $this->ETag;
}
/**
* Get "last modified" date
* @return string RFC2822 formatted last modified date
*/
public function getLastModified() {
return $this->lastModified;
}
/**
* Set the ETag
* @param string $ETag
*/
public function setETag($ETag) {
$this->ETag = $ETag;
}
/**
* Set "last modified" date
* @param \DateTime $lastModified
*/
public function setLastModified($lastModified) {
$this->lastModified = $lastModified;
}
}
|
