diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/7zip/Archive/7z/7zFolderInStream.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/Archive/7z/7zFolderInStream.h	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,66 @@
+// 7z/FolderInStream.h
+
+#ifndef __7Z_FOLDERINSTREAM_H
+#define __7Z_FOLDERINSTREAM_H
+
+#include "7zItem.h"
+#include "7zHeader.h"
+
+#include "../IArchive.h"
+#include "../Common/InStreamWithCRC.h"
+#include "../../IStream.h"
+#include "../../ICoder.h"
+
+namespace NArchive {
+namespace N7z {
+
+class CFolderInStream: 
+  public ISequentialInStream,
+  public ICompressGetSubStreamSize,
+  public CMyUnknownImp
+{
+public:
+
+  MY_UNKNOWN_IMP1(ICompressGetSubStreamSize)
+
+  CFolderInStream();
+
+  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
+
+  STDMETHOD(GetSubStreamSize)(UInt64 subStream, UInt64 *value);
+private:
+  CSequentialInStreamWithCRC *_inStreamWithHashSpec;
+  CMyComPtr<ISequentialInStream> _inStreamWithHash;
+  CMyComPtr<IArchiveUpdateCallback> _updateCallback;
+
+  bool _currentSizeIsDefined;
+  UInt64 _currentSize;
+
+  bool _fileIsOpen;
+  UInt64 _filePos;
+
+  const UInt32 *_fileIndices;
+  UInt32 _numFiles;
+  UInt32 _fileIndex;
+
+  HRESULT OpenStream();
+  HRESULT CloseStream();
+  void AddDigest();
+public:
+  void Init(IArchiveUpdateCallback *updateCallback, 
+      const UInt32 *fileIndices, UInt32 numFiles);
+  CRecordVector<bool> Processed;
+  CRecordVector<UInt32> CRCs;
+  CRecordVector<UInt64> Sizes;
+  UInt64 GetFullSize() const
+  {
+    UInt64 size = 0;
+    for (int i = 0; i < Sizes.Size(); i++)      
+      size += Sizes[i];
+    return size;
+  }
+};
+
+}}
+
+#endif