preparing update of physfs

jni/physfs-2.0.3/lzma/CPP/7zip/Common/LimitedStreams.h

@@ -0,0 +1,33 @@
+// LimitedStreams.h
+
+#ifndef __LIMITEDSTREAMS_H
+#define __LIMITEDSTREAMS_H
+
+#include "../../Common/MyCom.h"
+#include "../IStream.h"
+
+class CLimitedSequentialInStream: 
+  public ISequentialInStream,
+  public CMyUnknownImp
+{
+  CMyComPtr<ISequentialInStream> _stream;
+  UInt64 _size;
+  UInt64 _pos;
+  bool _wasFinished;
+public:
+  void SetStream(ISequentialInStream *stream) { _stream = stream; }
+  void Init(UInt64 streamSize)  
+  { 
+    _size = streamSize; 
+    _pos = 0; 
+    _wasFinished = false; 
+  }
+ 
+  MY_UNKNOWN_IMP
+
+  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
+  UInt64 GetSize() const { return _pos; }
+  bool WasFinished() const { return _wasFinished; }
+};
+
+#endif