diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/7zip/Archive/Common/ItemNameUtils.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/Archive/Common/ItemNameUtils.cpp	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,59 @@
+// Archive/Common/ItemNameUtils.cpp
+
+#include "StdAfx.h"
+
+#include "ItemNameUtils.h"
+
+namespace NArchive {
+namespace NItemName {
+
+static const wchar_t kOSDirDelimiter = WCHAR_PATH_SEPARATOR;
+static const wchar_t kDirDelimiter = L'/';
+
+UString MakeLegalName(const UString &name)
+{
+  UString zipName = name;
+  zipName.Replace(kOSDirDelimiter, kDirDelimiter);
+  return zipName;
+}
+
+UString GetOSName(const UString &name)
+{
+  UString newName = name;
+  newName.Replace(kDirDelimiter, kOSDirDelimiter);
+  return newName;
+}
+
+UString GetOSName2(const UString &name)
+{
+  if (name.IsEmpty())
+    return UString();
+  UString newName = GetOSName(name);
+  if (newName[newName.Length() - 1] == kOSDirDelimiter)
+    newName.Delete(newName.Length() - 1);
+  return newName;
+}
+
+bool HasTailSlash(const AString &name, UINT codePage)
+{
+  if (name.IsEmpty())
+    return false;
+  LPCSTR prev = 
+  #ifdef _WIN32
+    CharPrevExA((WORD)codePage, name, &name[name.Length()], 0);
+  #else
+    (LPCSTR)(name) + (name.Length() - 1);
+  #endif
+  return (*prev == '/');
+}
+
+#ifndef _WIN32
+UString WinNameToOSName(const UString &name)
+{
+  UString newName = name;
+  newName.Replace(L'\\', kOSDirDelimiter);
+  return newName;
+}
+#endif
+
+}}