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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_VERSION_H_
#define BASE_VERSION_H_
#include <stdint.h>
#include <iosfwd>
#include <string>
#include <vector>
#include "base/base_export.h"
#include "base/strings/string_piece.h"
namespace base {
// Version represents a dotted version number, like "1.2.3.4", supporting
// parsing and comparison.
class BASE_EXPORT Version {
public:
// The only thing you can legally do to a default constructed
// Version object is assign to it.
Version();
Version(const Version& other);
// Initializes from a decimal dotted version number, like "0.1.1".
// Each component is limited to a uint16_t. Call IsValid() to learn
// the outcome.
explicit Version(StringPiece version_str);
// Initializes from a vector of components, like {1, 2, 3, 4}. Call IsValid()
// to learn the outcome.
explicit Version(std::vector<uint32_t> components);
~Version();
// Returns true if the object contains a valid version number.
bool IsValid() const;
// Returns true if the version wildcard string is valid. The version wildcard
// string may end with ".*" (e.g. 1.2.*, 1.*). Any other arrangement with "*"
// is invalid (e.g. 1.*.3 or 1.2.3*). This functions defaults to standard
// Version behavior (IsValid) if no wildcard is present.
static bool IsValidWildcardString(StringPiece wildcard_string);
// Returns -1, 0, 1 for <, ==, >.
int CompareTo(const Version& other) const;
// Given a valid version object, compare if a |wildcard_string| results in a
// newer version. This function will default to CompareTo if the string does
// not end in wildcard sequence ".*". IsValidWildcard(wildcard_string) must be
// true before using this function.
int CompareToWildcardString(StringPiece wildcard_string) const;
// Return the string representation of this version.
std::string GetString() const;
const std::vector<uint32_t>& components() const { return components_; }
private:
std::vector<uint32_t> components_;
};
BASE_EXPORT bool operator==(const Version& v1, const Version& v2);
BASE_EXPORT bool operator!=(const Version& v1, const Version& v2);
BASE_EXPORT bool operator<(const Version& v1, const Version& v2);
BASE_EXPORT bool operator<=(const Version& v1, const Version& v2);
BASE_EXPORT bool operator>(const Version& v1, const Version& v2);
BASE_EXPORT bool operator>=(const Version& v1, const Version& v2);
BASE_EXPORT std::ostream& operator<<(std::ostream& stream, const Version& v);
} // namespace base
#endif // BASE_VERSION_H_
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