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-rwxr-xr-xCPP/7zip/IStream.h58
1 files changed, 58 insertions, 0 deletions
diff --git a/CPP/7zip/IStream.h b/CPP/7zip/IStream.h
new file mode 100755
index 0000000..89f02f5
--- /dev/null
+++ b/CPP/7zip/IStream.h
@@ -0,0 +1,58 @@
+// IStream.h
+
+#ifndef __ISTREAM_H
+#define __ISTREAM_H
+
+#include "../Common/MyUnknown.h"
+#include "../Common/Types.h"
+
+#include "IDecl.h"
+
+#define STREAM_INTERFACE_SUB(i, base, x) DECL_INTERFACE_SUB(i, base, 3, x)
+#define STREAM_INTERFACE(i, x) STREAM_INTERFACE_SUB(i, IUnknown, x)
+
+STREAM_INTERFACE(ISequentialInStream, 0x01)
+{
+ STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize) PURE;
+ /*
+ Out: if size != 0, return_value = S_OK and (*processedSize == 0),
+ then there are no more bytes in stream.
+ if (size > 0) && there are bytes in stream,
+ this function must read at least 1 byte.
+ This function is allowed to read less than number of remaining bytes in stream.
+ You must call Read function in loop, if you need exact amount of data
+ */
+};
+
+STREAM_INTERFACE(ISequentialOutStream, 0x02)
+{
+ STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize) PURE;
+ /*
+ if (size > 0) this function must write at least 1 byte.
+ This function is allowed to write less than "size".
+ You must call Write function in loop, if you need to write exact amount of data
+ */
+};
+
+STREAM_INTERFACE_SUB(IInStream, ISequentialInStream, 0x03)
+{
+ STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE;
+};
+
+STREAM_INTERFACE_SUB(IOutStream, ISequentialOutStream, 0x04)
+{
+ STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition) PURE;
+ STDMETHOD(SetSize)(UInt64 newSize) PURE;
+};
+
+STREAM_INTERFACE(IStreamGetSize, 0x06)
+{
+ STDMETHOD(GetSize)(UInt64 *size) PURE;
+};
+
+STREAM_INTERFACE(IOutStreamFlush, 0x07)
+{
+ STDMETHOD(Flush)() PURE;
+};
+
+#endif