1 files changed, 57 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/Common/UniqBlocks.cpp b/other-licenses/7zstub/src/CPP/7zip/Common/UniqBlocks.cpp
new file mode 100644
index 0000000000..5baf1a4953
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/7zip/Common/UniqBlocks.cpp
@@ -0,0 +1,57 @@
+// UniqBlocks.cpp
+
+#include "StdAfx.h"
+
+#include <string.h>
+
+#include "UniqBlocks.h"
+
+unsigned CUniqBlocks::AddUniq(const Byte *data, size_t size)
+{
+  unsigned left = 0, right = Sorted.Size();
+  while (left != right)
+  {
+    unsigned mid = (left + right) / 2;
+    unsigned index = Sorted[mid];
+    const CByteBuffer &buf = Bufs[index];
+    size_t sizeMid = buf.Size();
+    if (size < sizeMid)
+      right = mid;
+    else if (size > sizeMid)
+      left = mid + 1;
+    else
+    {
+      if (size == 0)
+        return index;
+      int cmp = memcmp(data, buf, size);
+      if (cmp == 0)
+        return index;
+      if (cmp < 0)
+        right = mid;
+      else
+        left = mid + 1;
+    }
+  }
+  unsigned index = Bufs.Size();
+  Sorted.Insert(left, index);
+  Bufs.AddNew().CopyFrom(data, size);
+  return index;
+}
+
+UInt64 CUniqBlocks::GetTotalSizeInBytes() const
+{
+  UInt64 size = 0;
+  FOR_VECTOR (i, Bufs)
+    size += Bufs[i].Size();
+  return size;
+}
+
+void CUniqBlocks::GetReverseMap()
+{
+  unsigned num = Sorted.Size();
+  BufIndexToSortedIndex.ClearAndSetSize(num);
+  unsigned *p = &BufIndexToSortedIndex[0];
+  const unsigned *sorted = &Sorted[0];
+  for (unsigned i = 0; i < num; i++)
+    p[sorted[i]] = i;
+}