1 files changed, 135 insertions, 0 deletions
diff --git a/src/libs/7zip/unix/CPP/7zip/Common/StreamObjects.h b/src/libs/7zip/unix/CPP/7zip/Common/StreamObjects.h
new file mode 100644
index 000000000..8cd95c700
--- /dev/null
+++ b/src/libs/7zip/unix/CPP/7zip/Common/StreamObjects.h
@@ -0,0 +1,135 @@
+// StreamObjects.h
+
+#ifndef __STREAM_OBJECTS_H
+#define __STREAM_OBJECTS_H
+
+#include "../../Common/Buffer.h"
+#include "../../Common/MyCom.h"
+#include "../IStream.h"
+
+struct CReferenceBuf:
+  public IUnknown,
+  public CMyUnknownImp
+{
+  CByteBuffer Buf;
+  MY_UNKNOWN_IMP
+};
+
+class CBufInStream:
+  public IInStream,
+  public CMyUnknownImp
+{
+  const Byte *_data;
+  UInt64 _pos;
+  size_t _size;
+  CMyComPtr<IUnknown> _ref;
+public:
+  void Init(const Byte *data, size_t size, IUnknown *ref = 0)
+  {
+    _data = data;
+    _size = size;
+    _pos = 0;
+    _ref = ref;
+  }
+  void Init(CReferenceBuf *ref) { Init(ref->Buf, ref->Buf.GetCapacity(), ref); }
+
+  MY_UNKNOWN_IMP1(IInStream)
+  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
+  STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition);
+};
+
+class CByteDynBuffer
+{
+  size_t _capacity;
+  Byte *_buf;
+public:
+  CByteDynBuffer(): _capacity(0), _buf(0) {};
+  // there is no copy constructor. So don't copy this object.
+  ~CByteDynBuffer() { Free(); }
+  void Free();
+  size_t GetCapacity() const { return  _capacity; }
+  operator Byte*() const { return _buf; };
+  operator const Byte*() const { return _buf; };
+  bool EnsureCapacity(size_t capacity);
+};
+
+class CDynBufSeqOutStream:
+  public ISequentialOutStream,
+  public CMyUnknownImp
+{
+  CByteDynBuffer _buffer;
+  size_t _size;
+public:
+  CDynBufSeqOutStream(): _size(0) {}
+  void Init() { _size = 0;  }
+  size_t GetSize() const { return _size; }
+  const Byte *GetBuffer() const { return _buffer; }
+  void CopyToBuffer(CByteBuffer &dest) const;
+  Byte *GetBufPtrForWriting(size_t addSize);
+  void UpdateSize(size_t addSize) { _size += addSize; }
+
+  MY_UNKNOWN_IMP
+  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
+};
+
+class CBufPtrSeqOutStream:
+  public ISequentialOutStream,
+  public CMyUnknownImp
+{
+  Byte *_buffer;
+  size_t _size;
+  size_t _pos;
+public:
+  void Init(Byte *buffer, size_t size)
+  {
+    _buffer = buffer;
+    _pos = 0;
+    _size = size;
+  }
+  size_t GetPos() const { return _pos; }
+
+  MY_UNKNOWN_IMP
+  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
+};
+
+class CSequentialOutStreamSizeCount:
+  public ISequentialOutStream,
+  public CMyUnknownImp
+{
+  CMyComPtr<ISequentialOutStream> _stream;
+  UInt64 _size;
+public:
+  void SetStream(ISequentialOutStream *stream) { _stream = stream; }
+  void Init() { _size = 0; }
+  UInt64 GetSize() const { return _size; }
+
+  MY_UNKNOWN_IMP
+  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
+};
+
+class CCachedInStream:
+  public IInStream,
+  public CMyUnknownImp
+{
+  UInt64 *_tags;
+  Byte *_data;
+  size_t _dataSize;
+  unsigned _blockSizeLog;
+  unsigned _numBlocksLog;
+  UInt64 _size;
+  UInt64 _pos;
+protected:
+  virtual HRESULT ReadBlock(UInt64 blockIndex, Byte *dest, size_t blockSize) = 0;
+public:
+  CCachedInStream(): _tags(0), _data(0) {}
+  virtual ~CCachedInStream() { Free(); } // the destructor must be virtual (release calls it) !!!
+  void Free();
+  bool Alloc(unsigned blockSizeLog, unsigned numBlocksLog);
+  void Init(UInt64 size);
+
+  MY_UNKNOWN_IMP2(ISequentialInStream, IInStream)
+  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
+  STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition);
+};
+
+#endif