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added errors checking, removed redundant variables

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This commit is contained in:
a.palagashvili 2020-11-29 15:08:28 +03:00
parent 1d09a67e9f
commit 7b886252ac
2 changed files with 10 additions and 10 deletions
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18
src/IO/ZstdDeflatingWriteBuffer.cpp
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@ -14,8 +14,12 @@ ZstdDeflatingWriteBuffer::ZstdDeflatingWriteBuffer(
cctx = ZSTD_createCCtx();
if (cctx == nullptr)
throw Exception(ErrorCodes::ZSTD_ENCODER_FAILED, "zstd stream encoder init failed: zstd version: {}", ZSTD_VERSION_STRING);
ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compression_level);
ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1);
size_t ret = ZSTD_CCtx_setParameter(cctx, ZSTD_c_compressionLevel, compression_level);
if (ZSTD_isError(ret))
throw Exception(ErrorCodes::ZSTD_ENCODER_FAILED, "zstd stream encoder option setting failed: error code: {}; zstd version: {}", ret, ZSTD_VERSION_STRING);
ret = ZSTD_CCtx_setParameter(cctx, ZSTD_c_checksumFlag, 1);
if (ZSTD_isError(ret))
throw Exception(ErrorCodes::ZSTD_ENCODER_FAILED, "zstd stream encoder option setting failed: error code: {}; zstd version: {}", ret, ZSTD_VERSION_STRING);
input = {nullptr, 0, 0};
output = {nullptr, 0, 0};
@ -41,9 +45,7 @@ void ZstdDeflatingWriteBuffer::nextImpl()
if (!offset())
return;
bool last_chunk = hasPendingData();
ZSTD_EndDirective mode = last_chunk ? ZSTD_e_end : ZSTD_e_flush;
ZSTD_EndDirective mode = ZSTD_e_flush;
input.src = reinterpret_cast<unsigned char *>(working_buffer.begin());
input.size = offset();
@ -59,13 +61,11 @@ void ZstdDeflatingWriteBuffer::nextImpl()
output.pos = out->offset();
size_t remaining = ZSTD_compressStream2(cctx, &output, &input, mode);
ZSTD_compressStream2(cctx, &output, &input, mode);
out->position() = out->buffer().begin() + output.pos;
finished = last_chunk ? (remaining == 0) : (input.pos == input.size);
finished = (input.pos == input.size);
} while (!finished);
if (last_chunk)
flushed = true;
}
void ZstdDeflatingWriteBuffer::finish()

2
src/IO/ZstdDeflatingWriteBuffer.h
View File

@ -19,7 +19,7 @@ public:
char * existing_memory = nullptr,
size_t alignment = 0);
/// Flush all pending data and write zlib footer to the underlying buffer.
/// Flush all pending data and write zstd footer to the underlying buffer.
/// After the first call to this function, subsequent calls will have no effect and
/// an attempt to write to this buffer will result in exception.
void finish();