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 // Initializes from a decimal dotted version number, like "0.1.1". 29 // Each component is limited to a uint16_t. Call IsValid() to learn 30 // the outcome. 31 explicit Version(const std::string& version_str); 32 33 // Initializes from a vector of components, like {1, 2, 3, 4}. Call IsValid() 34 // to learn the outcome. 35 explicit Version(std::vector<uint32_t> components); 36 37 ~Version(); 38 39 // Returns true if the object contains a valid version number. 40 bool IsValid() const; 41 42 // Returns true if the version wildcard string is valid. The version wildcard 43 // string may end with ".*" (e.g. 1.2.*, 1.*). Any other arrangement with "*" 44 // is invalid (e.g. 1.*.3 or 1.2.3*). This functions defaults to standard 45 // Version behavior (IsValid) if no wildcard is present. 46 static bool IsValidWildcardString(const std::string& wildcard_string); 47 48 // Returns -1, 0, 1 for <, ==, >. 49 int CompareTo(const Version& other) const; 50 51 // Given a valid version object, compare if a |wildcard_string| results in a 52 // newer version. This function will default to CompareTo if the string does 53 // not end in wildcard sequence ".*". IsValidWildcard(wildcard_string) must be 54 // true before using this function. 55 int CompareToWildcardString(const std::string& wildcard_string) const; 56 57 // Return the string representation of this version. 58 const std::string GetString() const; 59 60 const std::vector<uint32_t>& components() const { return components_; } 61 62 private: 63 std::vector<uint32_t> components_; 64 }; 65 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 bool operator<(const Version& v1, const Version& v2); 69 BASE_EXPORT bool operator<=(const Version& v1, const Version& v2); 70 BASE_EXPORT bool operator>(const Version& v1, const Version& v2); 71 BASE_EXPORT bool operator>=(const Version& v1, const Version& v2); 72 BASE_EXPORT std::ostream& operator<<(std::ostream& stream, const Version& v); 73 74 } // namespace base 75 76 #endif // BASE_VERSION_H_ 77
