ddidderr/zstd-rs
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Disambiguate pledgedSrcSize == 0

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- Modify ZSTD CLI to only set contentSizeFlag if it _knows_ the size
- Change pzstd to stop setting contentSizeFlag without accurate pledgedSrcSize
This commit is contained in:
Sean Purcell
2017-02-08 15:12:46 -08:00
parent ba2ad9f25c
commit 0f5c95af44
5 changed files with 16 additions and 9 deletions
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lib/compress/zstd_compress.c
+1 -1
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@@ -2362,7 +2362,7 @@ static size_t ZSTD_writeFrameHeader(void* dst, size_t dstCapacity,
U32 const dictIDSizeCode = (dictID>0) + (dictID>=256) + (dictID>=65536); /* 0-3 */
U32 const checksumFlag = params.fParams.checksumFlag>0;
U32 const windowSize = 1U << params.cParams.windowLog;
U32 const singleSegment = params.fParams.contentSizeFlag && (windowSize > (pledgedSrcSize-1));
U32 const singleSegment = params.fParams.contentSizeFlag && (windowSize > pledgedSrcSize);
BYTE const windowLogByte = (BYTE)((params.cParams.windowLog - ZSTD_WINDOWLOG_ABSOLUTEMIN) << 3);
U32 const fcsCode = params.fParams.contentSizeFlag ?
(pledgedSrcSize>=256) + (pledgedSrcSize>=65536+256) + (pledgedSrcSize>=0xFFFFFFFFU) : /* 0-3 */