<?php
/**
* @see https://github.com/laminas/laminas-mail for the canonical source repository
* @copyright https://github.com/laminas/laminas-mail/blob/master/COPYRIGHT.md
* @license https://github.com/laminas/laminas-mail/blob/master/LICENSE.md New BSD License
*/
namespace Laminas\Mail\Header;
class MimeVersion implements HeaderInterface
{
/**
* @var string Version string
*/
protected $version = '1.0';
public static function fromString($headerLine)
{
list($name, $value) = GenericHeader::splitHeaderLine($headerLine);
$value = HeaderWrap::mimeDecodeValue($value);
// check to ensure proper header type for this factory
if (strtolower($name) !== 'mime-version') {
throw new Exception\InvalidArgumentException('Invalid header line for MIME-Version string');
}
// Check for version, and set if found
$header = new static();
if (preg_match('/^(?P<version>\d+\.\d+)$/', $value, $matches)) {
$header->setVersion($matches['version']);
}
return $header;
}
public function getFieldName()
{
return 'MIME-Version';
}
public function getFieldValue($format = HeaderInterface::FORMAT_RAW)
{
return $this->version;
}
public function setEncoding($encoding)
{
// This header must be always in US-ASCII
return $this;
}
public function getEncoding()
{
return 'ASCII';
}
public function toString()
{
return 'MIME-Version: ' . $this->getFieldValue();
}
/**
* Set the version string used in this header
*
* @param string $version
* @return MimeVersion
*/
public function setVersion($version)
{
if (! preg_match('/^[1-9]\d*\.\d+$/', $version)) {
throw new Exception\InvalidArgumentException('Invalid MIME-Version value detected');
}
$this->version = $version;
return $this;
}
/**
* Retrieve the version string for this header
*
* @return string
*/
public function getVersion()
{
return $this->version;
}
}