ddidderr/zstd-rs
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minor variable isolation

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This commit is contained in:
Yann Collet
2016-04-01 15:48:48 +02:00
parent 9bb87e5995
commit 27caf2afca
7 changed files with 614 additions and 130 deletions
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lib/zstd_compress.c
+23 -13
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@@ -208,7 +208,8 @@ size_t ZSTD_sizeofCCtx(ZSTD_compressionParameters cParams) /* hidden interface
return ccsize; }
}
/*! ZSTD_resetCCtx_advanced() :
note : 'params' is expected to be validated */
static size_t ZSTD_resetCCtx_advanced (ZSTD_CCtx* zc,
ZSTD_parameters params)
{ /* note : params considered validated here */
@@ -1200,8 +1201,8 @@ static void ZSTD_compressBlock_fast_extDict_generic(ZSTD_CCtx* ctx,
hashTable[ZSTD_hashPtr(ip-2, hBits, mls)] = (U32)(ip-2-base);
/* check immediate repcode */
while (ip <= ilimit) {
U32 current2 = (U32)(ip-base);
const U32 repIndex2 = current2 - offset_2;
U32 const current2 = (U32)(ip-base);
U32 const repIndex2 = current2 - offset_2;
const BYTE* repMatch2 = repIndex2 < dictLimit ? dictBase + repIndex2 : base + repIndex2;
if ( ((repIndex2 <= dictLimit-4) || (repIndex2 >= dictLimit))
&& (MEM_read32(repMatch2) == MEM_read32(ip)) ) {
@@ -2233,18 +2234,12 @@ static size_t ZSTD_compress_insertDictionary(ZSTD_CCtx* zc, const void* dict, si
}
/*! ZSTD_compressBegin_advanced() :
/*! ZSTD_compressBegin_internal() :
* @return : 0, or an error code */
size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* zc,
static size_t ZSTD_compressBegin_internal(ZSTD_CCtx* zc,
const void* dict, size_t dictSize,
ZSTD_parameters params, U64 pledgedSrcSize)
{
/* compression parameters verification and optimization */
{ size_t const errorCode = ZSTD_checkCParams_advanced(params.cParams, pledgedSrcSize);
if (ZSTD_isError(errorCode)) return errorCode; }
ZSTD_adjustCParams(&params.cParams, pledgedSrcSize, dictSize);
{ size_t const errorCode = ZSTD_resetCCtx_advanced(zc, params);
if (ZSTD_isError(errorCode)) return errorCode; }
@@ -2272,13 +2267,28 @@ size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* zc,
}
/*! ZSTD_compressBegin_advanced() :
* @return : 0, or an error code */
size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* zc,
const void* dict, size_t dictSize,
ZSTD_parameters params, U64 pledgedSrcSize)
{
/* compression parameters verification and optimization */
{ size_t const errorCode = ZSTD_checkCParams_advanced(params.cParams, pledgedSrcSize);
if (ZSTD_isError(errorCode)) return errorCode; }
return ZSTD_compressBegin_internal(zc, dict, dictSize, params, pledgedSrcSize);
}
size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx* zc, const void* dict, size_t dictSize, int compressionLevel)
{
ZSTD_parameters params;
params.cParams = ZSTD_getCParams(compressionLevel, 0, dictSize);
params.fParams.contentSizeFlag = 0;
ZSTD_adjustCParams(&params.cParams, 0, dictSize);
ZSTD_LOG_BLOCK("%p: ZSTD_compressBegin_usingDict compressionLevel=%d\n", zc->base, compressionLevel);
return ZSTD_compressBegin_advanced(zc, dict, dictSize, params, 0);
return ZSTD_compressBegin_internal(zc, dict, dictSize, params, 0);
}
size_t ZSTD_compressBegin(ZSTD_CCtx* zc, int compressionLevel)
@@ -2342,7 +2352,7 @@ static size_t ZSTD_compress_internal (ZSTD_CCtx* ctx,
BYTE* op = ostart;
/* Init */
{ size_t const errorCode = ZSTD_compressBegin_advanced(ctx, dict, dictSize, params, srcSize);
{ size_t const errorCode = ZSTD_compressBegin_internal(ctx, dict, dictSize, params, srcSize);
if(ZSTD_isError(errorCode)) return errorCode; }
/* body (compression) */