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This commit is contained in:
Konstantin Grachev
2022-09-11 22:05:17 +03:00
parent 3bf8444e06
commit c88fdb6354
12 changed files with 41 additions and 26 deletions
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11
src/Stream/SnappyStream.php
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@@ -8,18 +8,19 @@ use Amp\Promise;
use Nsq\Buffer;
use Nsq\Exception\SnappyException;
use Nsq\Stream;
use function Amp\call;
class SnappyStream implements Stream
{
private const IDENTIFIER = [0xff, 0x06, 0x00, 0x00, 0x73, 0x4e, 0x61, 0x50, 0x70, 0x59];
private const IDENTIFIER = [0xFF, 0x06, 0x00, 0x00, 0x73, 0x4E, 0x61, 0x50, 0x70, 0x59];
private const SIZE_HEADER = 4;
private const SIZE_CHECKSUM = 4;
private const SIZE_CHUNK = 65536;
private const TYPE_IDENTIFIER = 0xff;
private const TYPE_IDENTIFIER = 0xFF;
private const TYPE_COMPRESSED = 0x00;
private const TYPE_UNCOMPRESSED = 0x01;
private const TYPE_PADDING = 0xfe;
private const TYPE_PADDING = 0xFE;
private Buffer $buffer;
@@ -45,7 +46,7 @@ class SnappyStream implements Stream
$type = $this->buffer->readUInt32LE();
$size = $type >> 8;
$type &= 0xff;
$type &= 0xFF;
while ($this->buffer->size() < $size && null !== ($chunk = yield $this->stream->read())) {
$this->buffer->append($chunk);
@@ -106,7 +107,7 @@ class SnappyStream implements Stream
/** @phpstan-ignore-next-line */
$checksum = unpack('N', hash('crc32c', $uncompressed, true))[1];
$checksum = (($checksum >> 15) | ($checksum << 17)) + 0xa282ead8 & 0xffffffff;
$checksum = (($checksum >> 15) | ($checksum << 17)) + 0xA282EAD8 & 0xFFFFFFFF;
$size = (\strlen($data) + 4) << 8;