1 files changed, 71 insertions, 0 deletions
diff --git a/hostTools/lzma/compress/WindowOut.h b/hostTools/lzma/compress/WindowOut.h
new file mode 100644
index 0000000..8adad98
--- /dev/null
+++ b/hostTools/lzma/compress/WindowOut.h
@@ -0,0 +1,71 @@
+#ifndef __STREAM_WINDOWOUT_H
+#define __STREAM_WINDOWOUT_H
+
+#include "IInOutStreams.h"
+
+namespace NStream {
+namespace NWindow {
+
+// m_KeepSizeBefore: how mach BYTEs must be in buffer before m_Pos;
+// m_KeepSizeAfter: how mach BYTEs must be in buffer after m_Pos;
+// m_KeepSizeReserv: how mach BYTEs must be in buffer for Moving Reserv; 
+//                    must be >= aKeepSizeAfter; // test it
+
+class COut
+{
+  BYTE  *m_Buffer;
+  UINT32 m_Pos;
+  UINT32 m_PosLimit;
+  UINT32 m_KeepSizeBefore;
+  UINT32 m_KeepSizeAfter;
+  UINT32 m_KeepSizeReserv;
+  UINT32 m_StreamPos;
+
+  UINT32 m_WindowSize;
+  UINT32 m_MoveFrom;
+
+  ISequentialOutStream *m_Stream;
+
+  virtual void MoveBlockBackward();
+public:
+  COut(): m_Buffer(0), m_Stream(0) {}
+  virtual ~COut();
+  void Create(UINT32 aKeepSizeBefore,
+      UINT32 aKeepSizeAfter, UINT32 aKeepSizeReserv = (1<<17));
+  void SetWindowSize(UINT32 aWindowSize);
+
+  void Init(ISequentialOutStream *aStream, bool aSolid = false);
+  HRESULT Flush();
+  
+  UINT32 GetCurPos() const { return m_Pos; }
+  const BYTE *GetPointerToCurrentPos() const { return m_Buffer + m_Pos;};
+
+  void CopyBackBlock(UINT32 aDistance, UINT32 aLen)
+  {
+    if (m_Pos >= m_PosLimit)
+      MoveBlockBackward();  
+    BYTE *p = m_Buffer + m_Pos;
+    aDistance++;
+    for(UINT32 i = 0; i < aLen; i++)
+      p[i] = p[i - aDistance];
+    m_Pos += aLen;
+  }
+
+  void PutOneByte(BYTE aByte)
+  {
+    if (m_Pos >= m_PosLimit)
+      MoveBlockBackward();  
+    m_Buffer[m_Pos++] = aByte;
+  }
+
+  BYTE GetOneByte(UINT32 anIndex) const
+  {
+    return m_Buffer[m_Pos + anIndex];
+  }
+
+  BYTE *GetBuffer() const { return m_Buffer; }
+};
+
+}}
+
+#endif