Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Version.cs / 1 / Version.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** File: Version ** ** ** Purpose: ** ** ===========================================================*/ namespace System { using CultureInfo = System.Globalization.CultureInfo; // A Version object contains four hierarchical numeric components: major, minor, // build and revision. Build and revision may be unspecified, which is represented // internally as a -1. By definition, an unspecified component matches anything // (both unspecified and specified), and an unspecified component is "less than" any // specified component. [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public sealed class Version : ICloneable, IComparable #if GENERICS_WORK , IComparable, IEquatable #endif { // AssemblyName depends on the order staying the same private int _Major; private int _Minor; private int _Build = -1; private int _Revision = -1; public Version(int major, int minor, int build, int revision) { if (major < 0) throw new ArgumentOutOfRangeException("major",Environment.GetResourceString("ArgumentOutOfRange_Version")); if (minor < 0) throw new ArgumentOutOfRangeException("minor",Environment.GetResourceString("ArgumentOutOfRange_Version")); if (build < 0) throw new ArgumentOutOfRangeException("build",Environment.GetResourceString("ArgumentOutOfRange_Version")); if (revision < 0) throw new ArgumentOutOfRangeException("revision",Environment.GetResourceString("ArgumentOutOfRange_Version")); _Major = major; _Minor = minor; _Build = build; _Revision = revision; } public Version(int major, int minor, int build) { if (major < 0) throw new ArgumentOutOfRangeException("major",Environment.GetResourceString("ArgumentOutOfRange_Version")); if (minor < 0) throw new ArgumentOutOfRangeException("minor",Environment.GetResourceString("ArgumentOutOfRange_Version")); if (build < 0) throw new ArgumentOutOfRangeException("build",Environment.GetResourceString("ArgumentOutOfRange_Version")); _Major = major; _Minor = minor; _Build = build; } public Version(int major, int minor) { if (major < 0) throw new ArgumentOutOfRangeException("major",Environment.GetResourceString("ArgumentOutOfRange_Version")); if (minor < 0) throw new ArgumentOutOfRangeException("minor",Environment.GetResourceString("ArgumentOutOfRange_Version")); _Major = major; _Minor = minor; } public Version(String version) { if ((Object) version == null) throw new ArgumentNullException("version"); String[] parsedComponents = version.Split(new char[] {'.'}); int parsedComponentsLength = parsedComponents.Length; if ((parsedComponentsLength < 2) || (parsedComponentsLength > 4)) throw new ArgumentException(Environment.GetResourceString("Arg_VersionString")); _Major = Int32.Parse(parsedComponents[0], CultureInfo.InvariantCulture); if (_Major < 0) throw new ArgumentOutOfRangeException("version",Environment.GetResourceString("ArgumentOutOfRange_Version")); _Minor = Int32.Parse(parsedComponents[1], CultureInfo.InvariantCulture); if (_Minor < 0) throw new ArgumentOutOfRangeException("version",Environment.GetResourceString("ArgumentOutOfRange_Version")); parsedComponentsLength -= 2; if (parsedComponentsLength > 0) { _Build = Int32.Parse(parsedComponents[2], CultureInfo.InvariantCulture); if (_Build < 0) throw new ArgumentOutOfRangeException("build",Environment.GetResourceString("ArgumentOutOfRange_Version")); parsedComponentsLength--; if (parsedComponentsLength > 0) { _Revision = Int32.Parse(parsedComponents[3], CultureInfo.InvariantCulture); if (_Revision < 0) throw new ArgumentOutOfRangeException("revision",Environment.GetResourceString("ArgumentOutOfRange_Version")); } } } public Version() { _Major = 0; _Minor = 0; } // Properties for setting and getting version numbers public int Major { get { return _Major; } } public int Minor { get { return _Minor; } } public int Build { get { return _Build; } } public int Revision { get { return _Revision; } } public short MajorRevision { get { return (short)(_Revision >> 16); } } public short MinorRevision { get { return (short)(_Revision & 0xFFFF); } } public Object Clone() { Version v = new Version(); v._Major = _Major; v._Minor = _Minor; v._Build = _Build; v._Revision = _Revision; return(v); } public int CompareTo(Object version) { if (version == null) return 1; Version v = version as Version; if (v == null) throw new ArgumentException(Environment.GetResourceString("Arg_MustBeVersion")); if (this._Major != v._Major) if (this._Major > v._Major) return 1; else return -1; if (this._Minor != v._Minor) if (this._Minor > v._Minor) return 1; else return -1; if (this._Build != v._Build) if (this._Build > v._Build) return 1; else return -1; if (this._Revision != v._Revision) if (this._Revision > v._Revision) return 1; else return -1; return 0; } #if GENERICS_WORK public int CompareTo(Version value) { if (value == null) return 1; if (this._Major != value._Major) if (this._Major > value._Major) return 1; else return -1; if (this._Minor != value._Minor) if (this._Minor > value._Minor) return 1; else return -1; if (this._Build != value._Build) if (this._Build > value._Build) return 1; else return -1; if (this._Revision != value._Revision) if (this._Revision > value._Revision) return 1; else return -1; return 0; } #endif public override bool Equals(Object obj) { Version v = obj as Version; if (v == null) return false; // check that major, minor, build & revision numbers match if ((this._Major != v._Major) || (this._Minor != v._Minor) || (this._Build != v._Build) || (this._Revision != v._Revision)) return false; return true; } public bool Equals(Version obj) { if (obj == null) return false; // check that major, minor, build & revision numbers match if ((this._Major != obj._Major) || (this._Minor != obj._Minor) || (this._Build != obj._Build) || (this._Revision != obj._Revision)) return false; return true; } public override int GetHashCode() { // Let's assume that most version numbers will be pretty small and just // OR some lower order bits together. int accumulator = 0; accumulator |= (this._Major & 0x0000000F) << 28; accumulator |= (this._Minor & 0x000000FF) << 20; accumulator |= (this._Build & 0x000000FF) << 12; accumulator |= (this._Revision & 0x00000FFF); return accumulator; } public override String ToString() { if (_Build == -1) return(ToString(2)); if (_Revision == -1) return(ToString(3)); return(ToString(4)); } public String ToString(int fieldCount) { switch (fieldCount) { case 0: return(String.Empty); case 1: return(String.Concat(_Major)); case 2: return(String.Concat(_Major,".",_Minor)); default: if (_Build == -1) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Bounds_Lower_Upper"), "0", "2"), "fieldCount"); if (fieldCount == 3) return( _Major + "." + _Minor + "." + _Build ); if (_Revision == -1) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Bounds_Lower_Upper"), "0", "3"), "fieldCount"); if (fieldCount == 4) return( Major + "." + _Minor + "." + _Build + "." + _Revision ); throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Bounds_Lower_Upper"), "0", "4"), "fieldCount"); } } public static bool operator ==(Version v1, Version v2) { if (Object.ReferenceEquals(v1, null)) { return Object.ReferenceEquals(v2, null); } return v1.Equals(v2); } public static bool operator !=(Version v1, Version v2) { return !(v1 == v2); } public static bool operator <(Version v1, Version v2) { if ((Object) v1 == null) throw new ArgumentNullException("v1"); return (v1.CompareTo(v2) < 0); } public static bool operator <=(Version v1, Version v2) { if ((Object) v1 == null) throw new ArgumentNullException("v1"); return (v1.CompareTo(v2) <= 0); } public static bool operator >(Version v1, Version v2) { return (v2 < v1); } public static bool operator >=(Version v1, Version v2) { return (v2 <= v1); } } }
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