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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Mime\Encoder;
/**
* @author Chris Corbyn
*/
final class Base64MimeHeaderEncoder extends Base64Encoder implements MimeHeaderEncoderInterface
{
public function getName(): string
{
return 'B';
}
/**
* Takes an unencoded string and produces a Base64 encoded string from it.
*
* If the charset is iso-2022-jp, it uses mb_encode_mimeheader instead of
* default encodeString, otherwise pass to the parent method.
*/
public function encodeString(string $string, ?string $charset = 'utf-8', int $firstLineOffset = 0, int $maxLineLength = 0): string
{
if ('iso-2022-jp' === strtolower($charset)) {
$old = mb_internal_encoding();
mb_internal_encoding('utf-8');
$newstring = mb_encode_mimeheader($string, 'iso-2022-jp', $this->getName(), "\r\n");
mb_internal_encoding($old);
return $newstring;
}
return parent::encodeString($string, $charset, $firstLineOffset, $maxLineLength);
}
}
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