Keep only base/extractor.[cc|h].

third_party/lzma/v4_65/files/C/LzmaUtil/Lzma86Dec.c

-/* Lzma86Dec.c -- LZMA + x86 (BCJ) Filter Decoder
-2008-04-07
-Igor Pavlov
-Public domain */
-
-#include "Lzma86Dec.h"
-
-#include "../Alloc.h"
-#include "../Bra.h"
-#include "../LzmaDec.h"
-
-#define LZMA86_SIZE_OFFSET (1 + LZMA_PROPS_SIZE)
-#define LZMA86_HEADER_SIZE (LZMA86_SIZE_OFFSET + 8)
-
-static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); }
-static void SzFree(void *p, void *address) { p = p; MyFree(address); }
-static ISzAlloc g_Alloc = { SzAlloc, SzFree };
-
-SRes Lzma86_GetUnpackSize(const Byte *src, SizeT srcLen, UInt64 *unpackSize)
-{
-  unsigned i;
-  if (srcLen < LZMA86_HEADER_SIZE)
-    return SZ_ERROR_INPUT_EOF;
-  *unpackSize = 0;
-  for (i = 0; i < sizeof(UInt64); i++)
-    *unpackSize += ((UInt64)src[LZMA86_SIZE_OFFSET + i]) << (8 * i);
-  return SZ_OK;
-}
-
-SRes Lzma86_Decode(Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen)
-{
-  SRes res;
-  int useFilter;
-  SizeT inSizePure;
-  ELzmaStatus status;
-
-  if (*srcLen < LZMA86_HEADER_SIZE)
-    return SZ_ERROR_INPUT_EOF;
-
-  useFilter = src[0];
-
-  if (useFilter > 1)
-  {
-    *destLen = 0;
-    return SZ_ERROR_UNSUPPORTED;
-  }
-
-  inSizePure = *srcLen - LZMA86_HEADER_SIZE;
-  res = LzmaDecode(dest, destLen, src + LZMA86_HEADER_SIZE, &inSizePure,
-      src + 1, LZMA_PROPS_SIZE, LZMA_FINISH_ANY, &status, &g_Alloc);
-  *srcLen = inSizePure + LZMA86_HEADER_SIZE;
-  if (res != SZ_OK)
-    return res;
-  if (useFilter == 1)
-  {
-    UInt32 x86State;
-    x86_Convert_Init(x86State);
-    x86_Convert(dest, *destLen, 0, &x86State, 0);
-  }
-  return SZ_OK;
-}