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