1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/src/win32/7zip/7z/CPP/7zip/IStream.h	Sat Mar 03 10:31:27 2012 -0600
     1.3 @@ -0,0 +1,58 @@
     1.4 +// IStream.h
     1.5 +
     1.6 +#ifndef __ISTREAM_H
     1.7 +#define __ISTREAM_H
     1.8 +
     1.9 +#include "../Common/MyUnknown.h"
    1.10 +#include "../Common/Types.h"
    1.11 +
    1.12 +#include "IDecl.h"
    1.13 +
    1.14 +#define STREAM_INTERFACE_SUB(i, base, x) DECL_INTERFACE_SUB(i, base, 3, x)
    1.15 +#define STREAM_INTERFACE(i, x) STREAM_INTERFACE_SUB(i, IUnknown, x)
    1.16 +
    1.17 +STREAM_INTERFACE(ISequentialInStream, 0x01)
    1.18 +{
    1.19 +  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize) PURE;
    1.20 +  /*
    1.21 +  Out: if size != 0, return_value = S_OK and (*processedSize == 0),
    1.22 +    then there are no more bytes in stream.
    1.23 +  if (size > 0) && there are bytes in stream,
    1.24 +  this function must read at least 1 byte.
    1.25 +  This function is allowed to read less than number of remaining bytes in stream.
    1.26 +  You must call Read function in loop, if you need exact amount of data
    1.27 +  */
    1.28 +};
    1.29 +
    1.30 +STREAM_INTERFACE(ISequentialOutStream, 0x02)
    1.31 +{
    1.32 +  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize) PURE;
    1.33 +  /*
    1.34 +  if (size > 0) this function must write at least 1 byte.
    1.35 +  This function is allowed to write less than "size".
    1.36 +  You must call Write function in loop, if you need to write exact amount of data
    1.37 +  */
    1.38 +};
    1.39 +
    1.40 +STREAM_INTERFACE_SUB(IInStream, ISequentialInStream, 0x03)
    1.41 +{
    1.42 +  STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE;
    1.43 +};
    1.44 +
    1.45 +STREAM_INTERFACE_SUB(IOutStream, ISequentialOutStream, 0x04)
    1.46 +{
    1.47 +  STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE;
    1.48 +  STDMETHOD(SetSize)(Int64 newSize) PURE;
    1.49 +};
    1.50 +
    1.51 +STREAM_INTERFACE(IStreamGetSize, 0x06)
    1.52 +{
    1.53 +  STDMETHOD(GetSize)(UInt64 *size) PURE;
    1.54 +};
    1.55 +
    1.56 +STREAM_INTERFACE(IOutStreamFlush, 0x07)
    1.57 +{
    1.58 +  STDMETHOD(Flush)() PURE;
    1.59 +};
    1.60 +
    1.61 +#endif