1 // Copyright (c) 2011 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/base_api.h" 13 #include "base/basictypes.h" 14 #include "base/gtest_prod_util.h" 15 16 // Version represents a dotted version number, like "1.2.3.4", supporting 17 // parsing and comparison. 18 // Each component is limited to a uint16. 19 class BASE_API Version { 20 public: 21 // Exposed only so that a Version can be stored in STL containers; 22 // any call to the methods below on a default-constructed Version 23 // will DCHECK. 24 Version(); 25 26 ~Version(); 27 28 // The version string must be made up of 1 or more uint16's separated 29 // by '.'. Returns NULL if string is not in this format. 30 // Caller is responsible for freeing the Version object once done. 31 static Version* GetVersionFromString(const std::string& version_str); 32 33 // Creates a copy of this version. Caller takes ownership. 34 Version* Clone() const; 35 36 bool Equals(const Version& other) const; 37 38 // Returns -1, 0, 1 for <, ==, >. 39 int CompareTo(const Version& other) const; 40 41 // Return the string representation of this version. 42 const std::string GetString() const; 43 44 const std::vector<uint16>& components() const { return components_; } 45 46 private: 47 bool InitFromString(const std::string& version_str); 48 49 bool is_valid_; 50 std::vector<uint16> components_; 51 52 FRIEND_TEST_ALL_PREFIXES(VersionTest, DefaultConstructor); 53 FRIEND_TEST_ALL_PREFIXES(VersionTest, GetVersionFromString); 54 FRIEND_TEST_ALL_PREFIXES(VersionTest, Compare); 55 }; 56 57 #endif // BASE_VERSION_H_ 58
