Merge branch 'master' into Sync-weave

1 files changed, 64 insertions, 0 deletions

diff --git a/other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h b/other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h
new file mode 100644
index 000000000..16c925010
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/Common/DynamicBuffer.h
@@ -0,0 +1,64 @@
+// Common/DynamicBuffer.h

+

+#ifndef __COMMON_DYNAMIC_BUFFER_H

+#define __COMMON_DYNAMIC_BUFFER_H

+

+template <class T> class CDynamicBuffer

+{

+  T *_items;

+  size_t _size;

+  size_t _pos;

+

+  CDynamicBuffer(const CDynamicBuffer &buffer);

+  void operator=(const CDynamicBuffer &buffer);

+

+  void Grow(size_t size)

+  {

+    size_t delta = _size >= 64 ? _size : 64;

+    if (delta < size)

+      delta = size;

+    size_t newCap = _size + delta;

+    if (newCap < delta)

+    {

+      newCap = _size + size;

+      if (newCap < size)

+        throw 20120116;

+    }

+

+    T *newBuffer = new T[newCap];

+    if (_pos != 0)

+      memcpy(newBuffer, _items, _pos * sizeof(T));

+    delete []_items;

+    _items = newBuffer;

+    _size = newCap;

+  }

+

+public:

+  CDynamicBuffer(): _items(0), _size(0), _pos(0) {}

+  // operator T *() { return _items; }

+  operator const T *() const { return _items; }

+  ~CDynamicBuffer() { delete []_items; }

+

+  T *GetCurPtrAndGrow(size_t addSize)

+  {

+    size_t rem = _size - _pos;

+    if (rem < addSize)

+      Grow(addSize - rem);

+    T *res = _items + _pos;

+    _pos += addSize;

+    return res;

+  }

+

+  void AddData(const T *data, size_t size)

+  {

+    memcpy(GetCurPtrAndGrow(size), data, size * sizeof(T));

+  }

+

+  const size_t GetPos() const { return _pos; }

+

+  // void Empty() { _pos = 0; }

+};

+

+typedef CDynamicBuffer<unsigned char> CByteDynamicBuffer;

+

+#endif