f69251d87e
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@7245 212acab6-be3b-0410-9dea-997c60f758d6
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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* IStream.h
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*
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* This file is a part of LZMA compression module for NSIS.
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*
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* Original LZMA SDK Copyright (C) 1999-2006 Igor Pavlov
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* Modifications Copyright (C) 2003-2021 Amir Szekely <kichik@netvision.net.il>
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*
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* Licensed under the Common Public License version 1.0 (the "License");
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* you may not use this file except in compliance with the License.
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*
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* Licence details can be found in the file COPYING.
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*
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* This software is provided 'as-is', without any express or implied
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* warranty.
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*/
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#ifndef __ISTREAM_H
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#define __ISTREAM_H
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#include "../Common/MyUnknown.h"
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#include "../Common/Types.h"
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// "23170F69-40C1-278A-0000-000300xx0000"
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#define STREAM_INTERFACE_SUB(i, b, x) \
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DEFINE_GUID(IID_ ## i, \
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0x23170F69, 0x40C1, 0x278A, 0x00, 0x00, 0x00, 0x03, 0x00, x, 0x00, 0x00); \
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struct i: public b
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#define STREAM_INTERFACE(i, x) STREAM_INTERFACE_SUB(i, IUnknown, x)
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STREAM_INTERFACE(ISequentialInStream, 0x01)
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{
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STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize) PURE;
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/*
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Out: if size != 0, return_value = S_OK and (*processedSize == 0),
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then there are no more bytes in stream.
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if (size > 0) && there are bytes in stream,
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this function must read at least 1 byte.
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This function is allowed to read less than number of remaining bytes in stream.
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You must call Read function in loop, if you need exact amount of data
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*/
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};
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STREAM_INTERFACE(ISequentialOutStream, 0x02)
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{
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STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize) PURE;
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/*
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if (size > 0) this function must write at least 1 byte.
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This function is allowed to write less than "size".
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You must call Write function in loop, if you need to write exact amount of data
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*/
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};
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STREAM_INTERFACE_SUB(IInStream, ISequentialInStream, 0x03)
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{
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STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE;
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};
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STREAM_INTERFACE_SUB(IOutStream, ISequentialOutStream, 0x04)
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{
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STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE;
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STDMETHOD(SetSize)(Int64 newSize) PURE;
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};
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STREAM_INTERFACE(IStreamGetSize, 0x06)
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{
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STDMETHOD(GetSize)(UInt64 *size) PURE;
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};
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STREAM_INTERFACE(IOutStreamFlush, 0x07)
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{
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STDMETHOD(Flush)() PURE;
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};
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#endif
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