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<?php
/**
* @see https://github.com/laminas/laminas-feed for the canonical source repository
* @copyright https://github.com/laminas/laminas-feed/blob/master/COPYRIGHT.md
* @license https://github.com/laminas/laminas-feed/blob/master/LICENSE.md New BSD License
*/
namespace Laminas\Feed\Reader\Http;
use Laminas\Feed\Reader\Exception;
use function is_string;
class Response implements HeaderAwareResponseInterface
{
/**
* @var string
*/
private $body;
/**
* @var array
*/
private $headers;
/**
* @var int
*/
private $statusCode;
/**
* @param int $statusCode
* @param object|string $body
* @throws Exception\InvalidArgumentException
*/
public function __construct($statusCode, $body = '', array $headers = [])
{
$this->validateStatusCode($statusCode);
$this->validateBody($body);
$this->validateHeaders($headers);
$this->statusCode = (int) $statusCode;
$this->body = (string) $body;
$this->headers = $this->normalizeHeaders($headers);
}
/**
* {@inheritDoc}
*/
public function getStatusCode()
{
return $this->statusCode;
}
/**
* {@inheritDoc}
*/
public function getBody()
{
return $this->body;
}
/**
* {@inheritDoc}
*/
public function getHeaderLine($name, $default = null)
{
$normalizedName = strtolower($name);
return isset($this->headers[$normalizedName])
? $this->headers[$normalizedName]
: $default;
}
/**
* Validate that we have a status code argument that will work for our context.
*
* @param int $statusCode
* @throws Exception\InvalidArgumentException for arguments not castable
* to integer HTTP status codes.
*
* @return void
*/
private function validateStatusCode($statusCode)
{
if (! is_numeric($statusCode) || (is_string($statusCode) && trim($statusCode) !== $statusCode)) {
throw new Exception\InvalidArgumentException(sprintf(
'%s expects a numeric status code; received %s',
__CLASS__,
is_object($statusCode) ? get_class($statusCode) : gettype($statusCode)
));
}
if (100 > $statusCode || 599 < $statusCode) {
throw new Exception\InvalidArgumentException(sprintf(
'%s expects an integer status code between 100 and 599 inclusive; received %s',
__CLASS__,
$statusCode
));
}
if (intval($statusCode) != $statusCode) {
throw new Exception\InvalidArgumentException(sprintf(
'%s expects an integer status code; received %s',
__CLASS__,
$statusCode
));
}
}
/**
* Validate that we have a body argument that will work for our context.
*
* @param mixed $body
* @throws Exception\InvalidArgumentException for arguments not castable
* to strings.
*
* @return void
*/
private function validateBody($body)
{
if (is_string($body)) {
return;
}
if (is_object($body) && method_exists($body, '__toString')) {
return;
}
throw new Exception\InvalidArgumentException(sprintf(
'%s expects a string body, or an object that can cast to string; received %s',
__CLASS__,
is_object($body) ? get_class($body) : gettype($body)
));
}
/**
* Validate header values.
*
* @throws Exception\InvalidArgumentException
*
* @return void
*/
private function validateHeaders(array $headers)
{
foreach ($headers as $name => $value) {
if (! is_string($name) || is_numeric($name) || empty($name)) {
throw new Exception\InvalidArgumentException(sprintf(
'Header names provided to %s must be non-empty, non-numeric strings; received %s',
__CLASS__,
$name
));
}
if (! is_string($value) && ! is_numeric($value)) {
throw new Exception\InvalidArgumentException(sprintf(
'Individual header values provided to %s must be a string or numeric; received %s for header %s',
__CLASS__,
is_object($value) ? get_class($value) : gettype($value),
$name
));
}
}
}
/**
* Normalize header names to lowercase.
*
* @return array
*/
private function normalizeHeaders(array $headers)
{
$normalized = [];
foreach ($headers as $name => $value) {
$normalized[strtolower($name)] = $value;
}
return $normalized;
}
}