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 #ifndef BASE_VERSION_H_ 6 #define BASE_VERSION_H_ 7 8 #include <stdint.h> 9 10 #include <iosfwd> 11 #include <string> 12 #include <vector> 13 14 #include "base/base_export.h" 15 16 namespace base { 17 18 // Version represents a dotted version number, like "1.2.3.4", supporting 19 // parsing and comparison. 20 class BASE_EXPORT Version { 21 public: 22 // The only thing you can legally do to a default constructed 23 // Version object is assign to it. 24 Version(); 25 26 Version(const Version& other); 27 28 ~Version(); 29 30 // Initializes from a decimal dotted version number, like "0.1.1". 31 // Each component is limited to a uint16_t. Call IsValid() to learn 32 // the outcome. 33 explicit Version(const std::string& version_str); 34 35 // Returns true if the object contains a valid version number. 36 bool IsValid() const; 37 38 // Returns true if the version wildcard string is valid. The version wildcard 39 // string may end with ".*" (e.g. 1.2.*, 1.*). Any other arrangement with "*" 40 // is invalid (e.g. 1.*.3 or 1.2.3*). This functions defaults to standard 41 // Version behavior (IsValid) if no wildcard is present. 42 static bool IsValidWildcardString(const std::string& wildcard_string); 43 44 // Returns -1, 0, 1 for <, ==, >. 45 int CompareTo(const Version& other) const; 46 47 // Given a valid version object, compare if a |wildcard_string| results in a 48 // newer version. This function will default to CompareTo if the string does 49 // not end in wildcard sequence ".*". IsValidWildcard(wildcard_string) must be 50 // true before using this function. 51 int CompareToWildcardString(const std::string& wildcard_string) const; 52 53 // Return the string representation of this version. 54 const std::string GetString() const; 55 56 const std::vector<uint32_t>& components() const { return components_; } 57 58 private: 59 std::vector<uint32_t> components_; 60 }; 61 62 BASE_EXPORT bool operator==(const Version& v1, const Version& v2); 63 BASE_EXPORT bool operator!=(const Version& v1, const Version& v2); 64 BASE_EXPORT bool operator<(const Version& v1, const Version& v2); 65 BASE_EXPORT bool operator<=(const Version& v1, const Version& v2); 66 BASE_EXPORT bool operator>(const Version& v1, const Version& v2); 67 BASE_EXPORT bool operator>=(const Version& v1, const Version& v2); 68 BASE_EXPORT std::ostream& operator<<(std::ostream& stream, const Version& v); 69 70 } // namespace base 71 72 // TODO(xhwang) remove this when all users are updated to explicitly use the 73 // namespace 74 using base::Version; 75 76 #endif // BASE_VERSION_H_ 77
