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<?php
namespace RESTAPI\Renderer;
/**
* Default base content renderer class (outputs text/plain).
*
* Content renderers are output filters that can reshape data before it
* is sent to the client.
* Each content renderer is associated with a certain content type and a
* certain file extension. This is neccessary for content negotiation.
*
* @author Jan-Hendrik Willms <tleilax+studip@gmail.com>
* @author <mlunzena@uos.de>
* @license GPL 2 or later
* @since Stud.IP 3.0
* @deprecated Since Stud.IP 5.0. Will be removed in Stud.IP 6.0.
*/
class DefaultRenderer
{
/**
* Returns an associated content type.
*
* @return String Content/mime type for this renderer
*/
public function contentType()
{
return 'text/plain';
}
/**
* Returns an associated extension.
*
* @return String Associated extension for this renderer.
*/
public function extension()
{
return '';
}
/**
* Response transformation function.
*
* @param \RESTAPI\Response $response the response to transform
*/
public function render($response)
{
if (!isset($response['Content-Type'])) {
$response['Content-Type'] = $this->contentType() . ';charset=utf-8';
}
}
/**
* Detects whether the renderer should respond to either a certain
* filename (tests by extension) or to a certain media range.
*
* @param String $filename Filename to test against
* @param mixed $media_range Media range to test against (optional,
* defaults to request's accept header if set)
* @return bool Returns whether the renderer should respond
*/
public function shouldRespondTo($filename, $media_range = null)
{
// If no media range is passed, evalute http header "Accept"
if ($media_range === null && isset($_SERVER['ACCEPT'])) {
$media_ranges = explode(';', $_SERVER['ACCEPT']);
$media_range = reset($media_ranges);
}
// Test if either the filename has the appropriate extension or
// if the client accepts the content type
return ($this->extension() && fnmatch('*' . $this->extension(), $filename))
|| ($media_range && fnmatch($media_range, $this->contentType()));
}
}
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