base/version.h

   1 // Copyright (c) 2009 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 #ifndef BASE_VERSION_H_
   6 #define BASE_VERSION_H_
   7 #pragma once
   8
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/basictypes.h"
  13 #include "base/gtest_prod_util.h"
  14
  15 class Version {
  16  public:
  17   // The version string must be made up of 1 or more uint16's separated
  18   // by '.'. Returns NULL if string is not in this format.
  19   // Caller is responsible for freeing the Version object once done.
  20   static Version* GetVersionFromString(const std::wstring& version_str);
  21   static Version* GetVersionFromString(const std::string& version_str);
  22
  23   // Exposed only so that a Version can be stored in STL containers;
  24   // any call to the methods below on a default-constructed Version
  25   // will DCHECK.
  26   Version();
  27
  28   ~Version() {}
  29
  30   bool Equals(const Version& other) const;
  31
  32   // Returns -1, 0, 1 for <, ==, >.
  33   int CompareTo(const Version& other) const;
  34
  35   // Return the string representation of this version.
  36   const std::string GetString() const;
  37
  38   const std::vector<uint16>& components() const { return components_; }
  39
  40  private:
  41   bool InitFromString(const std::string& version_str);
  42
  43   bool is_valid_;
  44   std::vector<uint16> components_;
  45
  46   FRIEND_TEST_ALL_PREFIXES(VersionTest, DefaultConstructor);
  47   FRIEND_TEST_ALL_PREFIXES(VersionTest, GetVersionFromString);
  48   FRIEND_TEST_ALL_PREFIXES(VersionTest, Compare);
  49 };
  50
  51 #endif  // BASE_VERSION_H_