1 files changed, 37 insertions, 0 deletions
diff --git a/CPP/7zip/Archive/Common/OutStreamWithCRC.h b/CPP/7zip/Archive/Common/OutStreamWithCRC.h
new file mode 100755
index 00000000..0feb542b
--- /dev/null
+++ b/CPP/7zip/Archive/Common/OutStreamWithCRC.h
@@ -0,0 +1,37 @@
+// OutStreamWithCRC.h
+
+#ifndef __OUTSTREAMWITHCRC_H
+#define __OUTSTREAMWITHCRC_H
+
+#include "../../../Common/CRC.h"
+#include "../../../Common/MyCom.h"
+#include "../../IStream.h"
+
+class COutStreamWithCRC: 
+  public ISequentialOutStream,
+  public CMyUnknownImp
+{
+public:
+  MY_UNKNOWN_IMP
+
+  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
+private:
+  CMyComPtr<ISequentialOutStream> _stream;
+  UInt64 _size;
+  CCRC _crc;
+  bool _calculateCrc;
+public:
+  void SetStream(ISequentialOutStream *stream) { _stream = stream; }
+  void Init(bool calculateCrc = true)
+  {
+    _size = 0;
+    _calculateCrc = calculateCrc;
+    _crc.Init();
+  }
+  void ReleaseStream() { _stream.Release(); }
+  UInt64 GetSize() const { return _size; }
+  UInt32 GetCRC() const { return _crc.GetDigest(); }
+  void InitCRC() { _crc.Init(); }
+};
+
+#endif