diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/7zip/UI/Common/IFileExtractCallback.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/UI/Common/IFileExtractCallback.h	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,43 @@
+// IFileExtractCallback.h
+
+#ifndef __IFILEEXTRACTCALLBACK_H
+#define __IFILEEXTRACTCALLBACK_H
+
+#include "Common/MyString.h"
+#include "../../IDecl.h"
+
+namespace NOverwriteAnswer
+{
+  enum EEnum
+  {
+    kYes,
+    kYesToAll,
+    kNo,
+    kNoToAll,
+    kAutoRename,
+    kCancel
+  };
+}
+
+DECL_INTERFACE_SUB(IFolderArchiveExtractCallback, IProgress, 0x01, 0x07)
+{
+public:
+  STDMETHOD(AskOverwrite)(
+      const wchar_t *existName, const FILETIME *existTime, const UInt64 *existSize,
+      const wchar_t *newName, const FILETIME *newTime, const UInt64 *newSize,
+      Int32 *answer) PURE;
+  STDMETHOD(PrepareOperation)(const wchar_t *name, bool isFolder, Int32 askExtractMode, const UInt64 *position) PURE;
+  STDMETHOD(MessageError)(const wchar_t *message) PURE;
+  STDMETHOD(SetOperationResult)(Int32 operationResult, bool encrypted) PURE;
+};
+
+struct IExtractCallbackUI: IFolderArchiveExtractCallback
+{
+  virtual HRESULT BeforeOpen(const wchar_t *name) = 0;
+  virtual HRESULT OpenResult(const wchar_t *name, HRESULT result, bool encrypted) = 0;
+  virtual HRESULT ThereAreNoFiles() = 0;
+  virtual HRESULT ExtractResult(HRESULT result) = 0;
+  virtual HRESULT SetPassword(const UString &password) = 0;
+};
+
+#endif