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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Feed\PubSubHubbub;
class HttpResponse
{
/**
* The body of any response to the current callback request
*
* @var string
*/
protected $content = '';
/**
* Array of headers. Each header is an array with keys 'name' and 'value'
*
* @var array
*/
protected $headers = array();
/**
* HTTP response code to use in headers
*
* @var int
*/
protected $statusCode = 200;
/**
* Send the response, including all headers
*
* @return void
*/
public function send()
{
$this->sendHeaders();
echo $this->getContent();
}
/**
* Send all headers
*
* Sends any headers specified. If an {@link setHttpResponseCode() HTTP response code}
* has been specified, it is sent with the first header.
*
* @return void
*/
public function sendHeaders()
{
if (count($this->headers) || (200 != $this->statusCode)) {
$this->canSendHeaders(true);
} elseif (200 == $this->statusCode) {
return;
}
$httpCodeSent = false;
foreach ($this->headers as $header) {
if (!$httpCodeSent && $this->statusCode) {
header($header['name'] . ': ' . $header['value'], $header['replace'], $this->statusCode);
$httpCodeSent = true;
} else {
header($header['name'] . ': ' . $header['value'], $header['replace']);
}
}
if (!$httpCodeSent) {
header('HTTP/1.1 ' . $this->statusCode);
}
}
/**
* Set a header
*
* If $replace is true, replaces any headers already defined with that
* $name.
*
* @param string $name
* @param string $value
* @param bool $replace
* @return \Zend\Feed\PubSubHubbub\HttpResponse
*/
public function setHeader($name, $value, $replace = false)
{
$name = $this->_normalizeHeader($name);
$value = (string) $value;
if ($replace) {
foreach ($this->headers as $key => $header) {
if ($name == $header['name']) {
unset($this->headers[$key]);
}
}
}
$this->headers[] = array(
'name' => $name,
'value' => $value,
'replace' => $replace,
);
return $this;
}
/**
* Check if a specific Header is set and return its value
*
* @param string $name
* @return string|null
*/
public function getHeader($name)
{
$name = $this->_normalizeHeader($name);
foreach ($this->headers as $header) {
if ($header['name'] == $name) {
return $header['value'];
}
}
}
/**
* Return array of headers; see {@link $headers} for format
*
* @return array
*/
public function getHeaders()
{
return $this->headers;
}
/**
* Can we send headers?
*
* @param bool $throw Whether or not to throw an exception if headers have been sent; defaults to false
* @return HttpResponse
* @throws Exception\RuntimeException
*/
public function canSendHeaders($throw = false)
{
$ok = headers_sent($file, $line);
if ($ok && $throw) {
throw new Exception\RuntimeException('Cannot send headers; headers already sent in ' . $file . ', line ' . $line);
}
return !$ok;
}
/**
* Set HTTP response code to use with headers
*
* @param int $code
* @return HttpResponse
* @throws Exception\InvalidArgumentException
*/
public function setStatusCode($code)
{
if (!is_int($code) || (100 > $code) || (599 < $code)) {
throw new Exception\InvalidArgumentException('Invalid HTTP response'
. ' code:' . $code);
}
$this->statusCode = $code;
return $this;
}
/**
* Retrieve HTTP response code
*
* @return int
*/
public function getStatusCode()
{
return $this->statusCode;
}
/**
* Set body content
*
* @param string $content
* @return \Zend\Feed\PubSubHubbub\HttpResponse
*/
public function setContent($content)
{
$this->content = (string) $content;
$this->setHeader('content-length', strlen($content));
return $this;
}
/**
* Return the body content
*
* @return string
*/
public function getContent()
{
return $this->content;
}
/**
* Normalizes a header name to X-Capitalized-Names
*
* @param string $name
* @return string
*/
protected function _normalizeHeader($name)
{
$filtered = str_replace(array('-', '_'), ' ', (string) $name);
$filtered = ucwords(strtolower($filtered));
$filtered = str_replace(' ', '-', $filtered);
return $filtered;
}
}
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