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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;
/**
* Retry-After HTTP Header
*
* @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.37
*/
class RetryAfter extends AbstractDate
{
/**
* Value of header in delta-seconds
* By default set to 1 hour
*
* @var int
*/
protected $deltaSeconds = 3600;
/**
* Create Retry-After header from string
*
* @param string $headerLine
* @return RetryAfter
* @throws Exception\InvalidArgumentException
*/
public static function fromString($headerLine)
{
$dateHeader = new static();
list($name, $date) = GenericHeader::splitHeaderLine($headerLine);
// check to ensure proper header type for this factory
if (strtolower($name) !== strtolower($dateHeader->getFieldName())) {
throw new Exception\InvalidArgumentException(
'Invalid header line for "' . $dateHeader->getFieldName() . '" header string'
);
}
if (is_numeric($date)) {
$dateHeader->setDeltaSeconds($date);
} else {
$dateHeader->setDate($date);
}
return $dateHeader;
}
/**
* Set number of seconds
*
* @param int $delta
* @return RetryAfter
*/
public function setDeltaSeconds($delta)
{
$this->deltaSeconds = (int) $delta;
return $this;
}
/**
* Get number of seconds
*
* @return int
*/
public function getDeltaSeconds()
{
return $this->deltaSeconds;
}
/**
* Get header name
*
* @return string
*/
public function getFieldName()
{
return 'Retry-After';
}
/**
* Returns date if it's set, or number of seconds
*
* @return int|string
*/
public function getFieldValue()
{
return ($this->date === null) ? $this->deltaSeconds : $this->getDate();
}
/**
* Return header line
*
* @return string
*/
public function toString()
{
return 'Retry-After: ' . $this->getFieldValue();
}
}