diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/7zip/Common/StreamUtils.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/Common/StreamUtils.cpp	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,44 @@
+// StreamUtils.cpp
+
+#include "StdAfx.h"
+
+#include "../../Common/MyCom.h"
+#include "StreamUtils.h"
+
+HRESULT ReadStream(ISequentialInStream *stream, void *data, UInt32 size, UInt32 *processedSize)
+{
+  if (processedSize != 0)
+    *processedSize = 0;
+  while(size != 0)
+  {
+    UInt32 processedSizeLoc; 
+    HRESULT res = stream->Read(data, size, &processedSizeLoc);
+    if (processedSize != 0)
+      *processedSize += processedSizeLoc;
+    data = (Byte *)((Byte *)data + processedSizeLoc);
+    size -= processedSizeLoc;
+    RINOK(res);
+    if (processedSizeLoc == 0)
+      return S_OK;
+  }
+  return S_OK;
+}
+
+HRESULT WriteStream(ISequentialOutStream *stream, const void *data, UInt32 size, UInt32 *processedSize)
+{
+  if (processedSize != 0)
+    *processedSize = 0;
+  while(size != 0)
+  {
+    UInt32 processedSizeLoc; 
+    HRESULT res = stream->Write(data, size, &processedSizeLoc);
+    if (processedSize != 0)
+      *processedSize += processedSizeLoc;
+    data = (const void *)((const Byte *)data + processedSizeLoc);
+    size -= processedSizeLoc;
+    RINOK(res);
+    if (processedSizeLoc == 0)
+      return E_FAIL;
+  }
+  return S_OK;
+}