ElasticVersion.cs
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// A simple version implementation based on
// https://github.com/maxhauser/semver/blob/master/src/Semver/SemVersion.cs // MIT License // Copyright (c) 2013 Max Hauser // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. using System; using System.Globalization; using System.Runtime.Serialization; using System.Security.Permissions; using System.Text.RegularExpressions; namespace Elastic { /// <summary> /// An Elastic product version /// </summary> public sealed class ElasticVersion : IEquatable<ElasticVersion>, IComparable<ElasticVersion>, IComparable { private static Regex VersionRegex = new Regex( @"^(?<major>\d+)(\.(?<minor>\d+))?(\.(?<patch>\d+))?(\-(?<pre>[0-9A-Za-z]+))?$", RegexOptions.CultureInvariant | RegexOptions.ExplicitCapture); public ElasticVersion(object version) : this(version.ToString()) { } public ElasticVersion(string version) { var match = VersionRegex.Match(version); if (!match.Success) throw new ArgumentException(string.Format("Invalid version '{0}'", version), "version"); var major = int.Parse(match.Groups["major"].Value, CultureInfo.InvariantCulture); var minorMatch = match.Groups["minor"]; int minor = 0; if (minorMatch.Success) minor = int.Parse(minorMatch.Value, CultureInfo.InvariantCulture); var patchMatch = match.Groups["patch"]; int patch = 0; if (patchMatch.Success) patch = int.Parse(patchMatch.Value, CultureInfo.InvariantCulture); var prerelease = match.Groups["pre"].Value; this.Major = major; this.Minor = minor; this.Patch = patch; this.Prerelease = prerelease; } public ElasticVersion(int major, int minor, int patch, string prerelease) { this.Major = major; this.Minor = minor; this.Patch = patch; this.Prerelease = prerelease; } public static bool TryParse(string version, out ElasticVersion ElasticVersion) { try { ElasticVersion = new ElasticVersion(version); return true; } catch (Exception) { ElasticVersion = null; return false; } } public static bool Equals(ElasticVersion versionA, ElasticVersion versionB) { if (ReferenceEquals(versionA, null)) return ReferenceEquals(versionB, null); return versionA.Equals(versionB); } public static int Compare(ElasticVersion versionA, ElasticVersion versionB) { if (ReferenceEquals(versionA, null)) return ReferenceEquals(versionB, null) ? 0 : -1; return versionA.CompareTo(versionB); } public ElasticVersion Change(int? major = null, int? minor = null, int? patch = null, string prerelease = null) { return new ElasticVersion( major ?? this.Major, minor ?? this.Minor, patch ?? this.Patch, prerelease ?? this.Prerelease); } public int Major { get; private set; } public int Minor { get; private set; } public int Patch { get; private set; } public string Prerelease { get; private set; } public override string ToString() { var version = "" + Major + "." + Minor + "." + Patch; if (!String.IsNullOrEmpty(Prerelease)) version += "-" + Prerelease; return version; } public int CompareTo(object obj) { return CompareTo((ElasticVersion)obj); } public int CompareTo(ElasticVersion other) { if (ReferenceEquals(other, null)) return 1; var r = this.CompareByPrecedence(other); return r; } public bool PrecedenceMatches(ElasticVersion other) { return CompareByPrecedence(other) == 0; } public int CompareByPrecedence(ElasticVersion other) { if (ReferenceEquals(other, null)) return 1; var r = this.Major.CompareTo(other.Major); if (r != 0) return r; r = this.Minor.CompareTo(other.Minor); if (r != 0) return r; r = this.Patch.CompareTo(other.Patch); if (r != 0) return r; r = CompareComponent(this.Prerelease, other.Prerelease, true); return r; } static int CompareComponent(string a, string b, bool lower = false) { var aEmpty = String.IsNullOrEmpty(a); var bEmpty = String.IsNullOrEmpty(b); if (aEmpty && bEmpty) return 0; if (aEmpty) return lower ? 1 : -1; if (bEmpty) return lower ? -1 : 1; var aComps = a.Split('.'); var bComps = b.Split('.'); var minLen = Math.Min(aComps.Length, bComps.Length); for (int i = 0; i < minLen; i++) { var ac = aComps[i]; var bc = bComps[i]; int anum, bnum; var isanum = Int32.TryParse(ac, out anum); var isbnum = Int32.TryParse(bc, out bnum); int r; if (isanum && isbnum) { r = anum.CompareTo(bnum); if (r != 0) return anum.CompareTo(bnum); } else { if (isanum) return -1; if (isbnum) return 1; r = String.CompareOrdinal(ac, bc); if (r != 0) return r; } } return aComps.Length.CompareTo(bComps.Length); } public override bool Equals(object obj) { if (ReferenceEquals(obj, null)) return false; if (ReferenceEquals(this, obj)) return true; var other = (ElasticVersion)obj; return Equals(other); } public bool Equals(ElasticVersion other) { if (other == null) return false; return this.Major == other.Major && this.Minor == other.Minor && this.Patch == other.Patch && string.Equals(this.Prerelease, other.Prerelease, StringComparison.Ordinal); } public override int GetHashCode() { unchecked { int result = this.Major.GetHashCode(); result = result * 31 + this.Minor.GetHashCode(); result = result * 31 + this.Patch.GetHashCode(); result = result * 31 + this.Prerelease.GetHashCode(); return result; } } public static bool operator ==(ElasticVersion left, ElasticVersion right) { return ElasticVersion.Equals(left, right); } public static bool operator !=(ElasticVersion left, ElasticVersion right) { return !ElasticVersion.Equals(left, right); } public static bool operator >(ElasticVersion left, ElasticVersion right) { return ElasticVersion.Compare(left, right) > 0; } public static bool operator >=(ElasticVersion left, ElasticVersion right) { return left == right || left > right; } public static bool operator <(ElasticVersion left, ElasticVersion right) { return ElasticVersion.Compare(left, right) < 0; } public static bool operator <=(ElasticVersion left, ElasticVersion right) { return left == right || left < right; } } } |