1 files changed, 127 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/IStream.h b/other-licenses/7zstub/src/CPP/7zip/IStream.h
new file mode 100644
index 0000000000..436e91987f
--- /dev/null
+++ b/other-licenses/7zstub/src/CPP/7zip/IStream.h
@@ -0,0 +1,127 @@
+// IStream.h
+
+#ifndef __ISTREAM_H
+#define __ISTREAM_H
+
+#include "../Common/MyTypes.h"
+#include "../Common/MyWindows.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;
+  
+  /*
+  The requirement for caller: (processedSize != NULL).
+  The callee can allow (processedSize == NULL) for compatibility reasons.
+    
+  if (size == 0), this function returns S_OK and (*processedSize) is set to 0.
+
+  if (size != 0)
+  {
+    Partial read is allowed: (*processedSize <= avail_size && *processedSize <= size),
+      where (avail_size) is the size of remaining bytes in stream.
+    If (avail_size != 0), this function must read at least 1 byte: (*processedSize > 0).
+    You must call Read() in loop, if you need to read exact amount of data.
+  }
+
+  If seek pointer before Read() call was changed to position past the end of stream:
+    if (seek_pointer >= stream_size), this function returns S_OK and (*processedSize) is set to 0.
+  
+  ERROR CASES:
+    If the function returns error code, then (*processedSize) is size of
+    data written to (data) buffer (it can be data before error or data with errors).
+    The recommended way for callee to work with reading errors:
+      1) write part of data before error to (data) buffer and return S_OK.
+      2) return error code for further calls of Read().
+  */
+};
+
+STREAM_INTERFACE(ISequentialOutStream, 0x02)
+{
+  STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize) PURE;
+  
+  /*
+  The requirement for caller: (processedSize != NULL).
+  The callee can allow (processedSize == NULL) for compatibility reasons.
+
+  if (size != 0)
+  {
+    Partial write is allowed: (*processedSize <= size),
+    but this function must write at least 1 byte: (*processedSize > 0).
+    You must call Write() in loop, if you need to write exact amount of data.
+  }
+
+  ERROR CASES:
+    If the function returns error code, then (*processedSize) is size of
+    data written from (data) buffer.
+  */
+};
+
+#ifdef __HRESULT_FROM_WIN32
+#define HRESULT_WIN32_ERROR_NEGATIVE_SEEK __HRESULT_FROM_WIN32(ERROR_NEGATIVE_SEEK)
+#else
+#define HRESULT_WIN32_ERROR_NEGATIVE_SEEK   HRESULT_FROM_WIN32(ERROR_NEGATIVE_SEEK)
+#endif
+
+/*  Seek() Function
+  If you seek before the beginning of the stream, Seek() function returns error code:
+      Recommended error code is __HRESULT_FROM_WIN32(ERROR_NEGATIVE_SEEK).
+      or STG_E_INVALIDFUNCTION
+      
+  It is allowed to seek past the end of the stream.
+
+
+  if Seek() returns error, then the value of *newPosition is undefined.
+*/
+
+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(IOutStreamFinish, 0x07)
+{
+  STDMETHOD(OutStreamFinish)() PURE;
+};
+
+
+STREAM_INTERFACE(IStreamGetProps, 0x08)
+{
+  STDMETHOD(GetProps)(UInt64 *size, FILETIME *cTime, FILETIME *aTime, FILETIME *mTime, UInt32 *attrib) PURE;
+};
+
+struct CStreamFileProps
+{
+  UInt64 Size;
+  UInt64 VolID;
+  UInt64 FileID_Low;
+  UInt64 FileID_High;
+  UInt32 NumLinks;
+  UInt32 Attrib;
+  FILETIME CTime;
+  FILETIME ATime;
+  FILETIME MTime;
+};
+
+STREAM_INTERFACE(IStreamGetProps2, 0x09)
+{
+  STDMETHOD(GetProps2)(CStreamFileProps *props) PURE;
+};
+
+#endif