1 files changed, 210 insertions, 0 deletions
diff --git a/libs/archive/thirdparty/CPP/7zip/IStream.h b/libs/archive/thirdparty/CPP/7zip/IStream.h
new file mode 100644
index 0000000..0c44a91
--- /dev/null
+++ b/libs/archive/thirdparty/CPP/7zip/IStream.h
@@ -0,0 +1,210 @@
+// IStream.h
+
+#ifndef ZIP7_INC_ISTREAM_H
+#define ZIP7_INC_ISTREAM_H
+
+#include "../Common/Common0.h"
+#include "../Common/MyTypes.h"
+#include "../Common/MyWindows.h"
+
+#include "IDecl.h"
+
+Z7_PURE_INTERFACES_BEGIN
+
+#define Z7_IFACE_CONSTR_STREAM_SUB(i, base, n) \
+  Z7_DECL_IFACE_7ZIP_SUB(i, base, 3, n) \
+  { Z7_IFACE_COM7_PURE(i) };
+
+#define Z7_IFACE_CONSTR_STREAM(i, n) \
+        Z7_IFACE_CONSTR_STREAM_SUB(i, IUnknown, n)
+
+
+/*
+ISequentialInStream::Read()
+  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().
+*/
+#define Z7_IFACEM_ISequentialInStream(x) \
+  x(Read(void *data, UInt32 size, UInt32 *processedSize))
+Z7_IFACE_CONSTR_STREAM(ISequentialInStream, 0x01)
+
+
+/*
+ISequentialOutStream::Write()
+  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.
+*/
+#define Z7_IFACEM_ISequentialOutStream(x) \
+  x(Write(const void *data, UInt32 size, UInt32 *processedSize))
+Z7_IFACE_CONSTR_STREAM(ISequentialOutStream, 0x02)
+
+
+#ifdef _WIN32
+
+#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
+
+#else
+
+#define HRESULT_WIN32_ERROR_NEGATIVE_SEEK   MY_E_ERROR_NEGATIVE_SEEK
+
+#endif
+
+
+/*
+IInStream::Seek() / IOutStream::Seek()
+  If you seek to position 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.
+*/
+
+#define Z7_IFACEM_IInStream(x) \
+  x(Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition))
+Z7_IFACE_CONSTR_STREAM_SUB(IInStream, ISequentialInStream, 0x03)
+
+#define Z7_IFACEM_IOutStream(x) \
+  x(Seek(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)) \
+  x(SetSize(UInt64 newSize))
+Z7_IFACE_CONSTR_STREAM_SUB(IOutStream, ISequentialOutStream, 0x04)
+
+#define Z7_IFACEM_IStreamGetSize(x) \
+  x(GetSize(UInt64 *size))
+Z7_IFACE_CONSTR_STREAM(IStreamGetSize, 0x06)
+
+#define Z7_IFACEM_IOutStreamFinish(x) \
+  x(OutStreamFinish())
+Z7_IFACE_CONSTR_STREAM(IOutStreamFinish, 0x07)
+
+#define Z7_IFACEM_IStreamGetProps(x) \
+  x(GetProps(UInt64 *size, FILETIME *cTime, FILETIME *aTime, FILETIME *mTime, UInt32 *attrib))
+Z7_IFACE_CONSTR_STREAM(IStreamGetProps, 0x08)
+
+
+struct CStreamFileProps
+{
+  UInt64 Size;
+  UInt64 VolID;
+  UInt64 FileID_Low;
+  UInt64 FileID_High;
+  UInt32 NumLinks;
+  UInt32 Attrib;
+  FILETIME CTime;
+  FILETIME ATime;
+  FILETIME MTime;
+};
+
+
+#define Z7_IFACEM_IStreamGetProps2(x) \
+  x(GetProps2(CStreamFileProps *props))
+Z7_IFACE_CONSTR_STREAM(IStreamGetProps2, 0x09)
+
+#define Z7_IFACEM_IStreamGetProp(x) \
+  x(GetProperty(PROPID propID, PROPVARIANT *value)) \
+  x(ReloadProps())
+Z7_IFACE_CONSTR_STREAM(IStreamGetProp, 0x0a)
+
+
+/*
+IStreamSetRestriction::SetRestriction(UInt64 begin, UInt64 end)
+  
+  It sets region of data in output stream that is restricted.
+  For restricted region it's expected (or allowed)
+  that the caller can write to same region with different calls of Write()/SetSize().
+  Another regions of output stream will be supposed as non-restricted:
+    - The callee usually doesn't flush the data in restricted region.
+    - The callee usually can flush data from non-restricted region after writing.
+
+Actual restiction rules depend also from current stream position.
+It's recommended to call SetRestriction() just before the Write() call.
+So the callee can optimize writing and flushing, if that Write()
+operation is not restricted.
+
+Note: Each new call of SetRestriction() sets new restictions,
+so previous restrction calls has no effect anymore.
+
+inputs:
+ 
+  (begin > end) is not allowed, and returns E_FAIL;
+  
+  if (begin == end)
+  {
+    No restriction.
+    The caller will call Write() in sequential order.
+    After SetRestriction(begin, begin), but before next call of SetRestriction()
+    {
+      Additional condition:
+        it's expected that current stream seek position is equal to stream size.
+      The callee can make final flushing for any data before current stream seek position.
+      For each Write(size) call:
+        The callee can make final flushing for that new written data.
+    }
+    The pair of values (begin == 0 && end == 0) is recommended to remove write restriction.
+  }
+  
+  if (begin < end)
+  {
+    it means that callee must NOT flush any data in region [begin, end).
+    The caller is allowed to Seek() to that region and rewrite the
+    data in that restriction region.
+    if (end == (UInt64)(Int64)-1)
+    {
+      there is no upper bound for restricted region.
+      So non-restricted region will be [0, begin) in that case
+    }
+  }
+
+ returns:
+  - if (begin > end) it return ERROR code (E_FAIL)
+  - S_OK : if no errors.
+  - Also the call of SetRestriction() can initiate the flushing of already written data.
+    So it can return the result of that flushing.
+ 
+ Note: IOutStream::SetSize() also can change the data.
+    So it's not expected the call
+    IOutStream::SetSize() to region that was written before as unrestricted.
+*/
+
+#define Z7_IFACEM_IStreamSetRestriction(x) \
+  x(SetRestriction(UInt64 begin, UInt64 end)) \
+
+Z7_IFACE_CONSTR_STREAM(IStreamSetRestriction, 0x10)
+
+Z7_PURE_INTERFACES_END
+#endif