1 files changed, 66 insertions, 0 deletions
diff --git a/src/libs/7zip/win/CPP/7zip/Compress/LzOutWindow.h b/src/libs/7zip/win/CPP/7zip/Compress/LzOutWindow.h
new file mode 100644
index 000000000..d8d13c225
--- /dev/null
+++ b/src/libs/7zip/win/CPP/7zip/Compress/LzOutWindow.h
@@ -0,0 +1,66 @@
+// LzOutWindow.h
+
+#ifndef __LZ_OUT_WINDOW_H
+#define __LZ_OUT_WINDOW_H
+
+#include "../IStream.h"
+
+#include "../Common/OutBuffer.h"
+
+#ifndef _NO_EXCEPTIONS
+typedef COutBufferException CLzOutWindowException;
+#endif
+
+class CLzOutWindow: public COutBuffer
+{
+public:
+  void Init(bool solid = false);
+  
+  // distance >= 0, len > 0,
+  bool CopyBlock(UInt32 distance, UInt32 len)
+  {
+    UInt32 pos = _pos - distance - 1;
+    if (distance >= _pos)
+    {
+      if (!_overDict || distance >= _bufferSize)
+        return false;
+      pos += _bufferSize;
+    }
+    if (_limitPos - _pos > len && _bufferSize - pos > len)
+    {
+      const Byte *src = _buffer + pos;
+      Byte *dest = _buffer + _pos;
+      _pos += len;
+      do
+        *dest++ = *src++;
+      while(--len != 0);
+    }
+    else do
+    {
+      if (pos == _bufferSize)
+        pos = 0;
+      _buffer[_pos++] = _buffer[pos++];
+      if (_pos == _limitPos)
+        FlushWithCheck();
+    }
+    while(--len != 0);
+    return true;
+  }
+  
+  void PutByte(Byte b)
+  {
+    _buffer[_pos++] = b;
+    if (_pos == _limitPos)
+      FlushWithCheck();
+  }
+  
+  Byte GetByte(UInt32 distance) const
+  {
+    UInt32 pos = _pos - distance - 1;
+    if (pos >= _bufferSize)
+      pos += _bufferSize;
+    return _buffer[pos];
+  }
+};
+
+#endif