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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;
- use Symfony\Component\Mime\Exception\RuntimeException;
- /**
- * @author Fabien Potencier <fabien@symfony.com>
- */
- final class Base64ContentEncoder extends Base64Encoder implements ContentEncoderInterface
- {
- public function encodeByteStream($stream, int $maxLineLength = 0): iterable
- {
- if (!\is_resource($stream)) {
- throw new \TypeError(sprintf('Method "%s" takes a stream as a first argument.', __METHOD__));
- }
- $filter = stream_filter_append($stream, 'convert.base64-encode', STREAM_FILTER_READ, [
- 'line-length' => 0 >= $maxLineLength || 76 < $maxLineLength ? 76 : $maxLineLength,
- 'line-break-chars' => "\r\n",
- ]);
- if (!\is_resource($filter)) {
- throw new RuntimeException('Unable to set the base64 content encoder to the filter.');
- }
- if (stream_get_meta_data($stream)['seekable'] ?? false) {
- rewind($stream);
- }
- while (!feof($stream)) {
- yield fread($stream, 8192);
- }
- stream_filter_remove($filter);
- }
- public function getName(): string
- {
- return 'base64';
- }
- }
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