Keep only base/extractor.[cc|h].

third_party/lzma/v4_65/files/CPP/7zip/Archive/Common/ItemNameUtils.cpp

-// 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
-
-}}