'21.07'21.07

1 files changed, 54 insertions, 0 deletions

diff --git a/C/Lzma86Dec.c b/C/Lzma86Dec.c
new file mode 100644
index 0000000..2103174
--- /dev/null
+++ b/C/Lzma86Dec.c
@@ -0,0 +1,54 @@
+/* Lzma86Dec.c -- LZMA + x86 (BCJ) Filter Decoder
+2016-05-16 : Igor Pavlov : Public domain */
+
+#include "Precomp.h"
+
+#include "Lzma86.h"
+
+#include "Alloc.h"
+#include "Bra.h"
+#include "LzmaDec.h"
+
+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;
+}