4.27 beta

7zip/Archive/Cab/CabBlockInStream.h

@@ -0,0 +1,56 @@
+// CabBlockInStream.cpp
+
+#ifndef __CABBLOCKINSTREAM_H
+#define __CABBLOCKINSTREAM_H
+
+#include "Common/MyCom.h"
+#include "../../IStream.h"
+
+namespace NArchive {
+namespace NCab {
+
+class CCabBlockInStream: 
+  public ISequentialInStream,
+  public CMyUnknownImp
+{
+  CMyComPtr<ISequentialInStream> _stream;
+  Byte *_buffer;
+  UInt32 _pos;
+  UInt32 _size;
+  int _align;
+
+public:
+  UInt32 TotalPackSize;
+  UInt32 ReservedSize;
+  bool DataError;
+  bool MsZip;
+
+  CCabBlockInStream(): _buffer(0), ReservedSize(0), MsZip(false), DataError(false), _align(0), TotalPackSize(0) {}
+  ~CCabBlockInStream();
+  bool Create();
+  void SetStream(ISequentialInStream *stream) {  _stream = stream; }
+
+  void InitForNewFolder()
+  {
+    _align = 0;
+    TotalPackSize = 0;
+  }
+  
+  void InitForNewBlock()
+  {
+    _size = 0;
+    _align = (_align + (int)TotalPackSize) & 1;
+  }
+
+  int GetAlign() const { return _align; }
+
+  MY_UNKNOWN_IMP
+
+  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
+
+  HRESULT PreRead(UInt32 &packSize, UInt32 &unpackSize);
+};
+
+}}
+
+#endif