AuroraMiddleware/zstd
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cli : added advanced parameter overlapLog

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as a hidden (undocumented) parameter for now
This commit is contained in:
Yann Collet 2017-01-30 13:07:24 -08:00
parent 92c98a5b21
commit 6ccd37c8d4
1 changed files with 7 additions and 1 deletions
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8
programs/zstdcli.c
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@ -186,7 +186,7 @@ static unsigned readU32FromChar(const char** stringPtr)
}
/** longCommandWArg() :
* check is *stringPtr is the same as longCommand.
* check if *stringPtr is the same as longCommand.
* If yes, @return 1 and advances *stringPtr to the position which immediately follows longCommand.
* @return 0 and doesn't modify *stringPtr otherwise.
*/
@ -220,6 +220,10 @@ static unsigned parseCoverParameters(const char* stringPtr, COVER_params_t *para
return 1;
}
#endif
static const U32 g_overlapLogDefault = 9999;
static U32 g_overlapLog = g_overlapLogDefault;
/** parseCompressionParameters() :
* reads compression parameters from *stringPtr (e.g. "--zstd=wlog=23,clog=23,hlog=22,slog=6,slen=3,tlen=48,strat=6") into *params
* @return 1 means that compression parameters were correct
@ -235,6 +239,7 @@ static unsigned parseCompressionParameters(const char* stringPtr, ZSTD_compressi
if (longCommandWArg(&stringPtr, "searchLength=") || longCommandWArg(&stringPtr, "slen=")) { params->searchLength = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "targetLength=") || longCommandWArg(&stringPtr, "tlen=")) { params->targetLength = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "strategy=") || longCommandWArg(&stringPtr, "strat=")) { params->strategy = (ZSTD_strategy)(1 + readU32FromChar(&stringPtr)); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
if (longCommandWArg(&stringPtr, "overlapLog=") || longCommandWArg(&stringPtr, "ovlog=")) { g_overlapLog = readU32FromChar(&stringPtr); if (stringPtr[0]==',') { stringPtr++; continue; } else break; }
return 0;
}
@ -629,6 +634,7 @@ int main(int argCount, const char* argv[])
#ifndef ZSTD_NOCOMPRESS
FIO_setNbThreads(nbThreads);
FIO_setBlockSize((U32)blockSize);
if (g_overlapLog!=g_overlapLogDefault) FIO_setOverlapLog(g_overlapLog);
if ((filenameIdx==1) && outFileName)
operationResult = FIO_compressFilename(outFileName, filenameTable[0], dictFileName, cLevel, &compressionParams);
else