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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,91 @@ | ||
| <?php declare(strict_types=1); | ||
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| namespace danog\MadelineProto; | ||
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| /** | ||
| * Stream duplicator module. | ||
| * | ||
| * This file is part of MadelineProto. | ||
| * MadelineProto is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. | ||
| * MadelineProto is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
| * See the GNU Affero General Public License for more details. | ||
| * You should have received a copy of the GNU General Public License along with MadelineProto. | ||
| * If not, see <http://www.gnu.org/licenses/>. | ||
| * | ||
| * @author Daniil Gentili <[email protected]> | ||
| * @copyright 2016-2023 Daniil Gentili <[email protected]> | ||
| * @license https://opensource.org/licenses/AGPL-3.0 AGPLv3 | ||
| * @link https://docs.madelineproto.xyz MadelineProto documentation | ||
| */ | ||
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| namespace danog\MadelineProto; | ||
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| use Amp\ByteStream\ReadableStream; | ||
| use Amp\ByteStream\ReadableStreamIteratorAggregate; | ||
| use Amp\ByteStream\WritableStream; | ||
| use Amp\Cancellation; | ||
| use Closure; | ||
| use IteratorAggregate; | ||
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| use function Amp\async; | ||
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| /** | ||
| * Stream duplicator. | ||
| * | ||
| * The secondary output stream is written to only when the StreamDuplicator is read. | ||
| * | ||
| * Thus, to fully duplicate a stream, both copies must be fully read until the end. | ||
| * | ||
| * @internal | ||
| */ | ||
| final class StreamDuplicator implements ReadableStream, IteratorAggregate | ||
| { | ||
| use ReadableStreamIteratorAggregate; | ||
| /** @var list<WritableStream> */ | ||
| private array $outputs; | ||
| /** | ||
| * @param ReadableStream $input Input stream | ||
| * @param WritableStream ...$outputs Secondary output streams, only written to when the primary stream (this one) is read. | ||
| */ | ||
| public function __construct( | ||
| private readonly ReadableStream $input, | ||
| WritableStream ...$outputs, | ||
| ) { | ||
| $this->outputs = $outputs; | ||
| } | ||
| public function read(?Cancellation $cancellation = null): ?string | ||
| { | ||
| $res = $this->input->read($cancellation); | ||
| if ($res === null) { | ||
| foreach ($this->outputs as $s) { | ||
| $s->close(); | ||
| } | ||
| } else { | ||
| foreach ($this->outputs as $s) { | ||
| if (!$s->isClosed()) { | ||
| async($s->write(...), $res)->ignore(); | ||
| } | ||
| } | ||
| } | ||
| return $res; | ||
| } | ||
| public function isReadable(): bool | ||
| { | ||
| return $this->input->isReadable(); | ||
| } | ||
| public function close(): void | ||
| { | ||
| $this->input->close(); | ||
| foreach ($this->outputs as $s) { | ||
| $s->close(); | ||
| } | ||
| } | ||
| public function isClosed(): bool | ||
| { | ||
| return $this->input->isClosed(); | ||
| } | ||
| public function onClose(Closure $onClose): void | ||
| { | ||
| $this->input->onClose($onClose); | ||
| } | ||
| } |