5 // Miguel de Icaza (miguel@ximian.com)
7 // (C) Ximian, Inc. http://www.ximian.com
10 using System.Globalization;
15 public sealed class Version : ICloneable, IComparable {
17 int major, minor, build, revision;
19 private const int UNDEFINED = -1;
21 private void CheckedSet (int defined, int major, int minor, int build, int revision)
23 // defined should be 2, 3 or 4
26 throw new ArgumentOutOfRangeException ("major");
31 throw new ArgumentOutOfRangeException ("minor");
36 this.build = UNDEFINED;
37 this.revision = UNDEFINED;
42 throw new ArgumentOutOfRangeException ("build");
47 this.revision = UNDEFINED;
52 throw new ArgumentOutOfRangeException ("revision");
54 this.revision = revision;
59 CheckedSet (2, 0, 0, -1, -1);
62 public Version (string version)
66 int major = -1, minor = -1, build = -1, revision = -1;
68 if (version == null) {
69 throw new ArgumentNullException ("version");
72 vals = version.Split (new Char [] {'.'});
76 throw new ArgumentException (Locale.GetText ("There must be 2, 3 or 4 components in the version string"));
80 major = int.Parse (vals [0]);
82 minor = int.Parse (vals [1]);
84 build = int.Parse (vals [2]);
86 revision = int.Parse (vals [3]);
88 CheckedSet (n, major, minor, build, revision);
91 public Version (int major, int minor)
93 CheckedSet (2, major, minor, 0, 0);
96 public Version (int major, int minor, int build)
98 CheckedSet (3, major, minor, build, 0);
101 public Version (int major, int minor, int build, int revision)
103 CheckedSet (4, major, minor, build, revision);
124 public int Revision {
130 public object Clone ()
132 return new Version (major, minor, build, revision);
135 public int CompareTo (object version)
139 // LAMESPEC: Docs are unclear whether an
140 // ArgumentNullException should be thrown are
141 // that a value > 0 should be returned.
144 // throw new ArgumentNullException ("version");
146 if (! (version is Version))
147 throw new ArgumentException (Locale.GetText ("Argument to Version.CompareTo must be a Version"));
149 v = version as Version;
151 if (this.major > v.major)
153 else if (this.major < v.major)
156 if (this.minor > v.minor)
158 else if (this.minor < v.minor)
161 if (this.build > v.build)
163 else if (this.build < v.build)
166 if (this.revision > v.revision)
168 else if (this.revision < v.revision)
174 public override bool Equals (object obj)
178 if (obj == null || !(obj is Version))
183 if ((x.major == major) &&
184 (x.minor == minor) &&
185 (x.build == build) &&
186 (x.revision == revision))
191 public override int GetHashCode ()
193 return (revision << 24) | (build << 16) | (minor << 8) | major;
197 // Returns a stringified representation of the version, format:
198 // major.minor[.build[.revision]]
200 public override string ToString ()
202 string mm = major.ToString () + "." + minor.ToString ();
204 if (build != UNDEFINED)
205 mm = mm + "." + build.ToString ();
206 if (revision != UNDEFINED)
207 mm = mm + "." + revision.ToString ();
213 // LAME: This API is lame, since there is no way of knowing
214 // how many fields a Version object has, it is unfair to throw
215 // an ArgumentException, but this is what the spec claims.
217 // ie, Version a = new Version (1, 2); a.ToString (3) should
218 // throw the expcetion.
220 public string ToString (int fields)
225 return major.ToString ();
227 return major.ToString () + "." + minor.ToString ();
229 if (build == UNDEFINED)
230 throw new ArgumentException (Locale.GetText ("fields is larger than the number of components defined in this instance"));
231 return major.ToString () + "." + minor.ToString () + "." +
235 if (build == UNDEFINED || revision == UNDEFINED)
236 throw new ArgumentException (Locale.GetText ("fields is larger than the number of components defined in this instance"));
237 return major.ToString () + "." + minor.ToString () + "." +
238 build.ToString () + "." + revision.ToString ();
240 throw new ArgumentException (Locale.GetText ("Invalid fields parameter: ") + fields.ToString());
243 public static bool operator== (Version v1, Version v2)
245 return v1.Equals (v2);
248 public static bool operator!= (Version v1, Version v2)
250 return !v1.Equals (v2);
253 public static bool operator> (Version v1, Version v2)
255 return v1.CompareTo (v2) > 0;
258 public static bool operator>= (Version v1, Version v2)
260 return v1.CompareTo (v2) >= 0;
263 public static bool operator< (Version v1, Version v2)
265 return v1.CompareTo (v2) < 0;
268 public static bool operator<= (Version v1, Version v2)
270 return v1.CompareTo (v2) <= 0;