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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) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Http\Header;
use Zend\Uri\Exception as UriException;
use Zend\Uri\UriFactory;
use Zend\Uri\UriInterface;
/**
* Abstract Location Header
* Supports headers that have URI as value
* @see Zend\Http\Header\Location
* @see Zend\Http\Header\ContentLocation
* @see Zend\Http\Header\Referer
*
* Note for 'Location' header:
* While RFC 1945 requires an absolute URI, most of the browsers also support relative URI
* This class allows relative URIs, and let user retrieve URI instance if strict validation needed
*/
abstract class AbstractLocation implements HeaderInterface
{
/**
* URI for this header
*
* @var UriInterface
*/
protected $uri = null;
/**
* Create location-based header from string
*
* @param string $headerLine
* @return AbstractLocation
* @throws Exception\InvalidArgumentException
*/
public static function fromString($headerLine)
{
$locationHeader = new static();
// ZF-5520 - IIS bug, no space after colon
list($name, $uri) = GenericHeader::splitHeaderLine($headerLine);
// check to ensure proper header type for this factory
if (strtolower($name) !== strtolower($locationHeader->getFieldName())) {
throw new Exception\InvalidArgumentException(
'Invalid header line for "' . $locationHeader->getFieldName() . '" header string'
);
}
HeaderValue::assertValid($uri);
$locationHeader->setUri(trim($uri));
return $locationHeader;
}
/**
* Set the URI/URL for this header, this can be a string or an instance of Zend\Uri\Http
*
* @param string|UriInterface $uri
* @return AbstractLocation
* @throws Exception\InvalidArgumentException
*/
public function setUri($uri)
{
if (is_string($uri)) {
try {
$uri = UriFactory::factory($uri);
} catch (UriException\InvalidUriPartException $e) {
throw new Exception\InvalidArgumentException(
sprintf('Invalid URI passed as string (%s)', (string) $uri),
$e->getCode(),
$e
);
}
} elseif (!($uri instanceof UriInterface)) {
throw new Exception\InvalidArgumentException('URI must be an instance of Zend\Uri\Http or a string');
}
$this->uri = $uri;
return $this;
}
/**
* Return the URI for this header
*
* @return string
*/
public function getUri()
{
if ($this->uri instanceof UriInterface) {
return $this->uri->toString();
}
return $this->uri;
}
/**
* Return the URI for this header as an instance of Zend\Uri\Http
*
* @return UriInterface
*/
public function uri()
{
if ($this->uri === null || is_string($this->uri)) {
$this->uri = UriFactory::factory($this->uri);
}
return $this->uri;
}
/**
* Get header value as URI string
*
* @return string
*/
public function getFieldValue()
{
return $this->getUri();
}
/**
* Output header line
*
* @return string
*/
public function toString()
{
return $this->getFieldName() . ': ' . $this->getUri();
}
/**
* Allow casting to string
*
* @return string
*/
public function __toString()
{
return $this->toString();
}
}