diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/Windows/PropVariant.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/Windows/PropVariant.cpp	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,312 @@
+// Windows/PropVariant.cpp
+
+#include "StdAfx.h"
+
+#include "PropVariant.h"
+
+#include "../Common/Defs.h"
+
+namespace NWindows {
+namespace NCOM {
+
+CPropVariant::CPropVariant(const PROPVARIANT& varSrc)
+{
+  vt = VT_EMPTY;
+  InternalCopy(&varSrc);
+}
+
+CPropVariant::CPropVariant(const CPropVariant& varSrc)
+{
+  vt = VT_EMPTY;
+  InternalCopy(&varSrc);
+}
+
+CPropVariant::CPropVariant(BSTR bstrSrc)
+{
+  vt = VT_EMPTY;
+  *this = bstrSrc;
+}
+
+CPropVariant::CPropVariant(LPCOLESTR lpszSrc)
+{
+  vt = VT_EMPTY;
+  *this = lpszSrc;
+}
+
+CPropVariant& CPropVariant::operator=(const CPropVariant& varSrc)
+{
+  InternalCopy(&varSrc);
+  return *this;
+}
+CPropVariant& CPropVariant::operator=(const PROPVARIANT& varSrc)
+{
+  InternalCopy(&varSrc);
+  return *this;
+}
+
+CPropVariant& CPropVariant::operator=(BSTR bstrSrc)
+{
+  *this = (LPCOLESTR)bstrSrc;
+  return *this;
+}
+
+CPropVariant& CPropVariant::operator=(LPCOLESTR lpszSrc)
+{
+  InternalClear();
+  vt = VT_BSTR;
+  wReserved1 = 0;
+  bstrVal = ::SysAllocString(lpszSrc);
+  if (bstrVal == NULL && lpszSrc != NULL)
+  {
+    vt = VT_ERROR;
+    scode = E_OUTOFMEMORY;
+  }
+  return *this;
+}
+
+
+CPropVariant& CPropVariant::operator=(bool bSrc)
+{
+  if (vt != VT_BOOL)
+  {
+    InternalClear();
+    vt = VT_BOOL;
+  }
+  boolVal = bSrc ? VARIANT_TRUE : VARIANT_FALSE;
+  return *this;
+}
+
+CPropVariant& CPropVariant::operator=(UInt32 value)
+{
+  if (vt != VT_UI4)
+  {
+    InternalClear();
+    vt = VT_UI4;
+  }
+  ulVal = value;
+  return *this;
+}
+
+CPropVariant& CPropVariant::operator=(UInt64 value)
+{
+  if (vt != VT_UI8)
+  {
+    InternalClear();
+    vt = VT_UI8;
+  }
+  uhVal.QuadPart = value;
+  return *this;
+}
+
+CPropVariant& CPropVariant::operator=(const FILETIME &value)
+{
+  if (vt != VT_FILETIME)
+  {
+    InternalClear();
+    vt = VT_FILETIME;
+  }
+  filetime = value;
+  return *this;
+}
+
+CPropVariant& CPropVariant::operator=(Int32 value)
+{
+  if (vt != VT_I4)
+  {
+    InternalClear();
+    vt = VT_I4;
+  }
+  lVal = value;
+  
+  return *this;
+}
+
+CPropVariant& CPropVariant::operator=(Byte value)
+{
+  if (vt != VT_UI1)
+  {
+    InternalClear();
+    vt = VT_UI1;
+  }
+  bVal = value;
+  return *this;
+}
+
+CPropVariant& CPropVariant::operator=(Int16 value)
+{
+  if (vt != VT_I2)
+  {
+    InternalClear();
+    vt = VT_I2;
+  }
+  iVal = value;
+  return *this;
+}
+
+/*
+CPropVariant& CPropVariant::operator=(LONG value)
+{
+  if (vt != VT_I4)
+  {
+    InternalClear();
+    vt = VT_I4;
+  }
+  lVal = value;
+  return *this;
+}
+*/
+
+static HRESULT MyPropVariantClear(PROPVARIANT *propVariant) 
+{ 
+  switch(propVariant->vt)
+  {
+    case VT_UI1:
+    case VT_I1:
+    case VT_I2:
+    case VT_UI2:
+    case VT_BOOL:
+    case VT_I4:
+    case VT_UI4:
+    case VT_R4:
+    case VT_INT:
+    case VT_UINT:
+    case VT_ERROR:
+    case VT_FILETIME:
+    case VT_UI8:
+    case VT_R8:
+    case VT_CY:
+    case VT_DATE:
+      propVariant->vt = VT_EMPTY;
+      propVariant->wReserved1 = 0; 
+      return S_OK;
+  }
+  return ::VariantClear((VARIANTARG *)propVariant); 
+}
+
+HRESULT CPropVariant::Clear() 
+{ 
+  return MyPropVariantClear(this);
+}
+
+HRESULT CPropVariant::Copy(const PROPVARIANT* pSrc) 
+{ 
+  ::VariantClear((tagVARIANT *)this); 
+  switch(pSrc->vt)
+  {
+    case VT_UI1:
+    case VT_I1:
+    case VT_I2:
+    case VT_UI2:
+    case VT_BOOL:
+    case VT_I4:
+    case VT_UI4:
+    case VT_R4:
+    case VT_INT:
+    case VT_UINT:
+    case VT_ERROR:
+    case VT_FILETIME:
+    case VT_UI8:
+    case VT_R8:
+    case VT_CY:
+    case VT_DATE:
+      memmove((PROPVARIANT*)this, pSrc, sizeof(PROPVARIANT));
+      return S_OK;
+  }
+  return ::VariantCopy((tagVARIANT *)this, (tagVARIANT *)(pSrc)); 
+}
+
+
+HRESULT CPropVariant::Attach(PROPVARIANT* pSrc)
+{
+  HRESULT hr = Clear();
+  if (FAILED(hr))
+    return hr;
+  memcpy(this, pSrc, sizeof(PROPVARIANT));
+  pSrc->vt = VT_EMPTY;
+  return S_OK;
+}
+
+HRESULT CPropVariant::Detach(PROPVARIANT* pDest)
+{
+  HRESULT hr = MyPropVariantClear(pDest);
+  if (FAILED(hr))
+    return hr;
+  memcpy(pDest, this, sizeof(PROPVARIANT));
+  vt = VT_EMPTY;
+  return S_OK;
+}
+
+HRESULT CPropVariant::InternalClear()
+{
+  HRESULT hr = Clear();
+  if (FAILED(hr))
+  {
+    vt = VT_ERROR;
+    scode = hr;
+  }
+  return hr;
+}
+
+void CPropVariant::InternalCopy(const PROPVARIANT* pSrc)
+{
+  HRESULT hr = Copy(pSrc);
+  if (FAILED(hr))
+  {
+    vt = VT_ERROR;
+    scode = hr;
+  }
+}
+
+int CPropVariant::Compare(const CPropVariant &a)
+{
+  if(vt != a.vt)
+    return 0; // it's mean some bug
+  switch (vt)
+  {
+    case VT_EMPTY:
+      return 0;
+    
+    /*
+    case VT_I1:
+      return MyCompare(cVal, a.cVal);
+    */
+    case VT_UI1:
+      return MyCompare(bVal, a.bVal);
+
+    case VT_I2:
+      return MyCompare(iVal, a.iVal);
+    case VT_UI2:
+      return MyCompare(uiVal, a.uiVal);
+    
+    case VT_I4:
+      return MyCompare(lVal, a.lVal);
+    /*
+    case VT_INT:
+      return MyCompare(intVal, a.intVal);
+    */
+    case VT_UI4:
+      return MyCompare(ulVal, a.ulVal);
+    /*
+    case VT_UINT:
+      return MyCompare(uintVal, a.uintVal);
+    */
+    case VT_I8:
+      return MyCompare(hVal.QuadPart, a.hVal.QuadPart);
+    case VT_UI8:
+      return MyCompare(uhVal.QuadPart, a.uhVal.QuadPart);
+
+    case VT_BOOL:    
+      return -MyCompare(boolVal, a.boolVal);
+
+    case VT_FILETIME:
+      return ::CompareFileTime(&filetime, &a.filetime);
+    case VT_BSTR:
+      return 0; // Not implemented 
+      // return MyCompare(aPropVarint.cVal);
+
+    default:
+      return 0;
+  }
+}
+
+}}