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<?php
namespace Laminas\Http\Header;
use function implode;
use function sprintf;
use function strtolower;
/**
* @see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.33
*
* @throws Exception\InvalidArgumentException
*/
class ProxyAuthenticate implements MultipleHeaderInterface
{
/** @var string */
protected $value;
/**
* @param string $headerLine
* @return static
*/
public static function fromString($headerLine)
{
[$name, $value] = GenericHeader::splitHeaderLine($headerLine);
// check to ensure proper header type for this factory
if (strtolower($name) !== 'proxy-authenticate') {
throw new Exception\InvalidArgumentException(sprintf(
'Invalid header line for Proxy-Authenticate string: "%s"',
$name
));
}
// @todo implementation details
return new static($value);
}
/** @param null|string $value */
public function __construct($value = null)
{
if ($value !== null) {
HeaderValue::assertValid($value);
$this->value = $value;
}
}
/** @return string */
public function getFieldName()
{
return 'Proxy-Authenticate';
}
/** @return string */
public function getFieldValue()
{
return (string) $this->value;
}
/** @return string */
public function toString()
{
return 'Proxy-Authenticate: ' . $this->getFieldValue();
}
/** @return string */
public function toStringMultipleHeaders(array $headers)
{
$strings = [$this->toString()];
foreach ($headers as $header) {
if (! $header instanceof ProxyAuthenticate) {
throw new Exception\RuntimeException(
'The ProxyAuthenticate multiple header implementation can only accept'
. ' an array of ProxyAuthenticate headers'
);
}
$strings[] = $header->toString();
}
return implode("\r\n", $strings);
}
}