The Tor Browser: other-licenses/7zstub/src/7zip/IStream.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 // IStream.h

     3 #ifndef __ISTREAM_H

     4 #define __ISTREAM_H

     6 #include "../Common/MyUnknown.h"

     7 #include "../Common/Types.h"

     9 // "23170F69-40C1-278A-0000-000300xx0000"

    11 #define STREAM_INTERFACE_SUB(i, b, x) \

    12 DEFINE_GUID(IID_ ## i, \

    13 0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x03, 0x00, x, 0x00, 0x00); \

    14 struct i: public b

    16 #define STREAM_INTERFACE(i, x) STREAM_INTERFACE_SUB(i, IUnknown, x)

    18 STREAM_INTERFACE(ISequentialInStream, 0x01)

    19 {

    20   STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize) PURE;

    21   /*

    22   Out: if size != 0, return_value = S_OK and (*processedSize == 0),

    23     then there are no more bytes in stream.

    24   if (size > 0) && there are bytes in stream,

    25   this function must read at least 1 byte.

    26   This function is allowed to read less than number of remaining bytes in stream.

    27   You must call Read function in loop, if you need exact amount of data

    28   */

    29 };

    31 STREAM_INTERFACE(ISequentialOutStream, 0x02)

    32 {

    33   STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize) PURE;

    34   /*

    35   if (size > 0) this function must write at least 1 byte.

    36   This function is allowed to write less than "size".

    37   You must call Write function in loop, if you need to write exact amount of data

    38   */

    39 };

    41 STREAM_INTERFACE_SUB(IInStream, ISequentialInStream, 0x03)

    42 {

    43   STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE;

    44 };

    46 STREAM_INTERFACE_SUB(IOutStream, ISequentialOutStream, 0x04)

    47 {

    48   STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE;

    49   STDMETHOD(SetSize)(Int64 newSize) PURE;

    50 };

    52 STREAM_INTERFACE(IStreamGetSize, 0x06)

    53 {

    54   STDMETHOD(GetSize)(UInt64 *size) PURE;

    55 };

    57 STREAM_INTERFACE(IOutStreamFlush, 0x07)

    58 {

    59   STDMETHOD(Flush)() PURE;

    60 };

    62 #endif

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