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added legacy decoder for v0.6 format

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This commit is contained in:
inikep
2016-06-09 17:59:18 +02:00
parent 348a53a842
commit bf853d5510
4 changed files with 4957 additions and 48 deletions
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lib/legacy/zstd_legacy.h
+42 -31
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@@ -47,6 +47,7 @@ extern "C" {
#include "zstd_v03.h"
#include "zstd_v04.h"
#include "zstd_v05.h"
#include "zstd_v06.h"
/** ZSTD_isLegacy() :
@@ -55,15 +56,16 @@ extern "C" {
*/
MEM_STATIC unsigned ZSTD_isLegacy (U32 magicNumberLE)
{
switch(magicNumberLE)
{
case ZSTDv01_magicNumberLE:return 1;
case ZSTDv02_magicNumber : return 2;
case ZSTDv03_magicNumber : return 3;
case ZSTDv04_magicNumber : return 4;
case ZSTDv05_MAGICNUMBER : return 5;
default : return 0;
}
switch(magicNumberLE)
{
case ZSTDv01_magicNumberLE:return 1;
case ZSTDv02_magicNumber : return 2;
case ZSTDv03_magicNumber : return 3;
case ZSTDv04_magicNumber : return 4;
case ZSTDv05_MAGICNUMBER : return 5;
case ZSTDv06_MAGICNUMBER : return 6;
default : return 0;
}
}
@@ -73,28 +75,37 @@ MEM_STATIC size_t ZSTD_decompressLegacy(
const void* dict,size_t dictSize,
U32 magicNumberLE)
{
switch(magicNumberLE)
{
case ZSTDv01_magicNumberLE :
return ZSTDv01_decompress(dst, dstCapacity, src, compressedSize);
case ZSTDv02_magicNumber :
return ZSTDv02_decompress(dst, dstCapacity, src, compressedSize);
case ZSTDv03_magicNumber :
return ZSTDv03_decompress(dst, dstCapacity, src, compressedSize);
case ZSTDv04_magicNumber :
return ZSTDv04_decompress(dst, dstCapacity, src, compressedSize);
case ZSTDv05_MAGICNUMBER :
{
size_t result;
ZSTDv05_DCtx* zd = ZSTDv05_createDCtx();
if (zd==NULL) return ERROR(memory_allocation);
result = ZSTDv05_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize);
ZSTDv05_freeDCtx(zd);
return result;
}
default :
return ERROR(prefix_unknown);
}
switch(magicNumberLE)
{
case ZSTDv01_magicNumberLE :
return ZSTDv01_decompress(dst, dstCapacity, src, compressedSize);
case ZSTDv02_magicNumber :
return ZSTDv02_decompress(dst, dstCapacity, src, compressedSize);
case ZSTDv03_magicNumber :
return ZSTDv03_decompress(dst, dstCapacity, src, compressedSize);
case ZSTDv04_magicNumber :
return ZSTDv04_decompress(dst, dstCapacity, src, compressedSize);
case ZSTDv05_MAGICNUMBER :
{
size_t result;
ZSTDv05_DCtx* zd = ZSTDv05_createDCtx();
if (zd==NULL) return ERROR(memory_allocation);
result = ZSTDv05_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize);
ZSTDv05_freeDCtx(zd);
return result;
}
case ZSTDv06_MAGICNUMBER :
{
size_t result;
ZSTDv06_DCtx* zd = ZSTDv06_createDCtx();
if (zd==NULL) return ERROR(memory_allocation);
result = ZSTDv06_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize);
ZSTDv06_freeDCtx(zd);
return result;
}
default :
return ERROR(prefix_unknown);
}
}