AuroraMiddleware/zstd
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fixed minor decompression bug in buffered mode

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This commit is contained in:
Yann Collet 2015-11-25 21:09:17 +01:00
parent d3cb690156
commit e4fdad55dc
2 changed files with 13 additions and 9 deletions
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15
lib/zstd_buffered.c
View File

@ -439,11 +439,16 @@ size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbc, void* dst, size_t* maxDstSizePt
if (zbc->outBuff == NULL) return ERROR(memory_allocation);
}
}
memcpy(zbc->inBuff, zbc->headerBuffer, zbc->hPos);
zbc->inPos = zbc->hPos;
zbc->hPos = 0;
zbc->stage = ZBUFFds_load;
break; /* useless : stage follows */
if (zbc->hPos)
{
/* some data already loaded into headerBuffer : transfer into inBuff */
memcpy(zbc->inBuff, zbc->headerBuffer, zbc->hPos);
zbc->inPos = zbc->hPos;
zbc->hPos = 0;
zbc->stage = ZBUFFds_load;
break;
}
zbc->stage = ZBUFFds_read;
case ZBUFFds_read:
{

7
lib/zstd_decompress.c
View File

@ -68,7 +68,6 @@
# include "zstd_legacy.h"
#endif
/* *******************************************************
* Compiler specifics
*********************************************************/
@ -120,7 +119,7 @@ const char* ZSTD_getErrorName(size_t code) { return ERR_getErrorName(code); }
/* *************************************************************
* Context management
***************************************************************/
typedef enum { ZSTDds_getFrameHeaderSize, ZSTDds_decodeFrameHeader,
typedef enum { ZSTDds_getFrameHeaderSize, ZSTDds_decodeFrameHeader,
ZSTDds_decodeBlockHeader, ZSTDds_decompressBlock } ZSTD_dStage;
struct ZSTD_DCtx_s
@ -449,7 +448,7 @@ static void ZSTD_decodeSequence(seq_t* seq, seqState_t* seqState)
/* Literal length */
litLength = FSE_decodeSymbol(&(seqState->stateLL), &(seqState->DStream));
prevOffset = litLength ? seq->offset : seqState->prevOffset;
prevOffset = litLength ? seq->offset : seqState->prevOffset;
if (litLength == MaxLL)
{
U32 add = *dumps++;
@ -801,7 +800,7 @@ size_t ZSTD_decompressContinue(ZSTD_DCtx* ctx, void* dst, size_t maxDstSize, con
/* get frame header size */
if (srcSize != ZSTD_frameHeaderSize_min) return ERROR(srcSize_wrong); /* impossible */
ctx->headerSize = ZSTD_decodeFrameHeader_Part1(ctx, src, ZSTD_frameHeaderSize_min);
if (ZSTD_isError(ctx->headerSize)) return ctx->headerSize;
if (ZSTD_isError(ctx->headerSize)) return ctx->headerSize;
memcpy(ctx->headerBuffer, src, ZSTD_frameHeaderSize_min);
if (ctx->headerSize > ZSTD_frameHeaderSize_min)
{