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

base/system_info.h

-// Copyright 2004-2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-
-// TODO(omaha): this code should be updated according to code published by
-// Microsoft at http://msdn.microsoft.com/en-us/library/ms724429(VS.85).aspx.
-// We need a more rigorous clasification of versions.
-
-#ifndef OMAHA_BASE_SYSTEM_INFO_H_
-#define OMAHA_BASE_SYSTEM_INFO_H_
-
-#include <windows.h>
-#include <tchar.h>
-
-namespace omaha {
-
-// TODO(omaha): refactor to use a namespace.
-class SystemInfo {
- public:
-  // Find out if the OS is at least Windows 2000
-  // Service pack 4. If OS version is less than that
-  // will return false, all other cases true.
-  static bool OSWin2KSP4OrLater() {
-    // Use GetVersionEx to get OS and Service Pack information.
-    OSVERSIONINFOEX osviex;
-    ::ZeroMemory(&osviex, sizeof(osviex));
-    osviex.dwOSVersionInfoSize = sizeof(osviex);
-    BOOL success = ::GetVersionEx(reinterpret_cast<OSVERSIONINFO*>(&osviex));
-    // If this failed we're on Win9X or a pre NT4SP6 OS.
-    if (!success) {
-      return false;
-    }
-
-    if (osviex.dwMajorVersion < 5) {
-      return false;
-    }
-    if (osviex.dwMajorVersion > 5) {
-      return true;    // way beyond Windows XP.
-    }
-    if (osviex.dwMinorVersion >= 1) {
-      return true;    // Windows XP or better.
-    }
-    if (osviex.wServicePackMajor >= 4) {
-      return true;    // Windows 2000 SP4.
-    }
-
-    return false;     // Windows 2000, < SP4.
-  }
-
-  // Returns true if the OS is at least XP SP2.
-  static bool OSWinXPSP2OrLater();
-
-  // CategorizeOS returns a categorization of what operating system is running,
-  // and the service pack level.
-  // NOTE: Please keep this in the order of increasing OS versions
-  enum OSVersionType {
-    OS_WINDOWS_UNKNOWN = 1,
-    OS_WINDOWS_9X_OR_NT,
-    OS_WINDOWS_2000,
-    OS_WINDOWS_XP,
-    OS_WINDOWS_SERVER_2003,
-    OS_WINDOWS_VISTA,
-    OS_WINDOWS_7
-  };
-  static HRESULT CategorizeOS(OSVersionType* os_version, DWORD* service_pack);
-  static const wchar_t* OSVersionTypeAsString(OSVersionType t);
-
-  // Returns true if the current operating system is Windows 2000.
-  static bool IsRunningOnW2K();
-
-  // Are we running on Windows XP or later.
-  static bool IsRunningOnXPOrLater();
-
-  // Are we running on Windows XP SP1 or later.
-  static bool IsRunningOnXPSP1OrLater();
-
-  // Are we running on Windows Vista or later.
-  static bool IsRunningOnVistaOrLater();
-
-  static bool IsRunningOnVistaRTM();
-
-  // Returns the version and the name of the operating system.
-  static bool GetSystemVersion(int* major_version,
-                               int* minor_version,
-                               int* service_pack_major,
-                               int* service_pack_minor,
-                               TCHAR* name_buf,
-                               size_t name_buf_len);
-
-  // Returns the processor architecture. We use wProcessorArchitecture in
-  // SYSTEM_INFO returned by ::GetNativeSystemInfo() to detect the processor
-  // architecture of the installed operating system. Note the "Native" in the
-  // function name - this is important. See
-  // http://msdn.microsoft.com/en-us/library/ms724340.aspx.
-  static DWORD GetProcessorArchitecture();
-
-  // Returns whether this is a 64-bit Windows system.
-  static bool Is64BitWindows();
-};
-
-}  // namespace omaha
-
-#endif  // OMAHA_BASE_SYSTEM_INFO_H_
-