diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/7zip/Archive/ArchiveExports.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/Archive/ArchiveExports.cpp	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,130 @@
+// ArchiveExports.cpp
+
+#include "StdAfx.h"
+
+#include "../../Common/ComTry.h"
+#include "../../Common/Types.h"
+#include "../../Windows/PropVariant.h"
+#include "../Common/RegisterArc.h"
+
+#include "IArchive.h"
+#include "../ICoder.h"
+#include "../IPassword.h"
+
+static const unsigned int kNumArcsMax = 32;
+static unsigned int g_NumArcs = 0;
+static const CArcInfo *g_Arcs[kNumArcsMax]; 
+void RegisterArc(const CArcInfo *arcInfo) 
+{ 
+  if (g_NumArcs < kNumArcsMax)
+    g_Arcs[g_NumArcs++] = arcInfo; 
+}
+
+DEFINE_GUID(CLSID_CArchiveHandler, 
+0x23170F69, 0x40C1, 0x278A, 0x10, 0x00, 0x00, 0x01, 0x10, 0x00, 0x00, 0x00);
+
+#define CLS_ARC_ID_ITEM(cls) ((cls).Data4[5])
+
+static inline HRESULT SetPropString(const char *s, unsigned int size, PROPVARIANT *value)
+{
+  if ((value->bstrVal = ::SysAllocStringByteLen(s, size)) != 0)
+    value->vt = VT_BSTR;
+  return S_OK;
+}
+
+static inline HRESULT SetPropGUID(const GUID &guid, PROPVARIANT *value)
+{
+  return SetPropString((const char *)&guid, sizeof(GUID), value);
+}
+
+int FindFormatCalssId(const GUID *clsID)
+{
+  GUID cls = *clsID;
+  CLS_ARC_ID_ITEM(cls) = 0;
+  if (cls != CLSID_CArchiveHandler)
+    return -1;
+  Byte id = CLS_ARC_ID_ITEM(*clsID);
+  for (UInt32 i = 0; i < g_NumArcs; i++)
+    if (g_Arcs[i]->ClassId == id)
+      return i;
+  return -1;
+}
+
+STDAPI CreateArchiver(const GUID *clsid, const GUID *iid, void **outObject)
+{
+  COM_TRY_BEGIN
+  {
+    int needIn = (*iid == IID_IInArchive);
+    int needOut = (*iid == IID_IOutArchive);
+    if (!needIn && !needOut)
+      return E_NOINTERFACE;
+    int formatIndex = FindFormatCalssId(clsid);
+    if (formatIndex < 0)
+      return CLASS_E_CLASSNOTAVAILABLE;
+    
+    const CArcInfo &arc = *g_Arcs[formatIndex];
+    if (needIn)
+    {
+      *outObject = arc.CreateInArchive();
+      ((IInArchive *)*outObject)->AddRef();
+    }
+    else
+    {
+      if (!arc.CreateOutArchive)
+        return CLASS_E_CLASSNOTAVAILABLE;
+      *outObject = arc.CreateOutArchive();
+      ((IOutArchive *)*outObject)->AddRef();
+    }
+  }
+  COM_TRY_END
+  return S_OK;
+}
+
+STDAPI GetHandlerProperty2(UInt32 formatIndex, PROPID propID, PROPVARIANT *value)
+{
+  if (formatIndex >= g_NumArcs)
+    return E_INVALIDARG;
+  const CArcInfo &arc = *g_Arcs[formatIndex];
+  NWindows::NCOM::CPropVariant prop;
+  switch(propID)
+  {
+    case NArchive::kName:
+      prop = arc.Name;
+      break;
+    case NArchive::kClassID:
+    {
+      GUID clsId = CLSID_CArchiveHandler;
+      CLS_ARC_ID_ITEM(clsId) = arc.ClassId;
+      return SetPropGUID(clsId, value);
+    }
+    case NArchive::kExtension:
+      if (arc.Ext != 0)
+        prop = arc.Ext;
+      break;
+    case NArchive::kAddExtension:
+      if (arc.AddExt != 0)
+        prop = arc.AddExt;
+      break;
+    case NArchive::kUpdate:
+      prop = (bool)(arc.CreateOutArchive != 0);
+      break;
+    case NArchive::kKeepName:
+      prop = arc.KeepName;
+      break;
+    case NArchive::kStartSignature:
+      return SetPropString((const char *)arc.Signature, arc.SignatureSize, value);
+  }
+  prop.Detach(value);
+  return S_OK;
+}
+
+STDAPI GetHandlerProperty(PROPID propID, PROPVARIANT *value)
+{
+  return GetHandlerProperty2(0, propID, value);
+}
+
+STDAPI GetNumberOfFormats(UINT32 *numFormats)
+{
+  *numFormats = g_NumArcs;
+  return S_OK;
+}