base/guid.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/guid.h"
   6
   7 namespace base {
   8
   9 bool IsValidGUID(const std::string& guid) {
  10   const size_t kGUIDLength = 36U;
  11   if (guid.length() != kGUIDLength)
  12     return false;
  13
  14   const std::string hexchars = "0123456789ABCDEF";
  15   for (uint32 i = 0; i < guid.length(); ++i) {
  16     char current = guid[i];
  17     if (i == 8 || i == 13 || i == 18 || i == 23) {
  18       if (current != '-')
  19         return false;
  20     } else {
  21       if (hexchars.find(current) == std::string::npos)
  22         return false;
  23     }
  24   }
  25
  26   return true;
  27 }
  28
  29 }  // namespace base