// (C) Ximian, Inc. http://www.ximian.com
//
+using System.Globalization;
+
namespace System {
+
+ [Serializable]
+ public sealed class Version : ICloneable, IComparable {
- public class Version : ICloneable, IComparable {
int major, minor, build, revision;
- const int MAXINT = int.MaxValue;
+ private const int UNDEFINED = -1;
+ private void CheckedSet (int defined, int major, int minor, int build, int revision)
+ {
+ // defined should be 2, 3 or 4
+
+ if (major < 0) {
+ throw new ArgumentOutOfRangeException ("major");
+ }
+ this.major = major;
+
+ if (minor < 0) {
+ throw new ArgumentOutOfRangeException ("minor");
+ }
+ this.minor = minor;
+
+ if (defined == 2) {
+ this.build = UNDEFINED;
+ this.revision = UNDEFINED;
+ return;
+ }
+
+ if (build < 0) {
+ throw new ArgumentOutOfRangeException ("build");
+ }
+ this.build = build;
+
+ if (defined == 3) {
+ this.revision = UNDEFINED;
+ return;
+ }
+
+ if (revision < 0) {
+ throw new ArgumentOutOfRangeException ("revision");
+ }
+ this.revision = revision;
+ }
+
+ public Version ()
+ {
+ CheckedSet (2, 0, 0, -1, -1);
+ }
+
public Version (string version)
{
int n;
- string [] vals = version.Split (new Char [] {'.'});
+ string [] vals;
+ int major = -1, minor = -1, build = -1, revision = -1;
+ if (version == null) {
+ throw new ArgumentNullException ("version");
+ }
+
+ vals = version.Split (new Char [] {'.'});
n = vals.Length;
+
+ if (n < 2 || n > 4) {
+ throw new ArgumentException (Locale.GetText ("There must be 2, 3 or 4 components in the version string"));
+ }
+
if (n > 0)
major = int.Parse (vals [0]);
if (n > 1)
if (n > 2)
build = int.Parse (vals [2]);
if (n > 3)
- build = int.Parse (vals [3]);
+ revision = int.Parse (vals [3]);
+
+ CheckedSet (n, major, minor, build, revision);
}
public Version (int major, int minor)
{
- this.major = major;
- this.minor = minor;
- this.build = MAXINT;
- this.revision = MAXINT;
+ CheckedSet (2, major, minor, 0, 0);
}
public Version (int major, int minor, int build)
{
- this.major = major;
- this.minor = minor;
- this.build = build;
- this.revision = MAXINT;
+ CheckedSet (3, major, minor, build, 0);
}
public Version (int major, int minor, int build, int revision)
{
- this.major = major;
- this.minor = minor;
- this.build = build;
- this.revision = revision;
+ CheckedSet (4, major, minor, build, revision);
}
public int Build {
{
Version v;
+ // LAMESPEC: Docs are unclear whether an
+ // ArgumentNullException should be thrown are
+ // that a value > 0 should be returned.
if (version == null)
- throw new ArgumentNullException ("version");
+ return 1;
+ // throw new ArgumentNullException ("version");
+
if (! (version is Version))
- throw new ArgumentException ("version");
+ throw new ArgumentException (Locale.GetText ("Argument to Version.CompareTo must be a Version"));
- v = version;
+ v = version as Version;
if (this.major > v.major)
return 1;
if (this.minor > v.minor)
return 1;
- else if (this.minor < this.minor)
+ else if (this.minor < v.minor)
return -1;
if (this.build > v.build)
return 1;
- else if (this.build < this.build)
+ else if (this.build < v.build)
return -1;
- // FIXME: Compare revision or build first?
if (this.revision > v.revision)
return 1;
else if (this.revision < v.revision)
return 0;
}
-
+ public override bool Equals (object obj)
+ {
+ Version x;
+
+ if (obj == null || !(obj is Version))
+ return false;
+
+ x = (Version) obj;
+
+ if ((x.major == major) &&
+ (x.minor == minor) &&
+ (x.build == build) &&
+ (x.revision == revision))
+ return true;
+ return false;
+ }
+
+ public override int GetHashCode ()
+ {
+ return (revision << 24) | (build << 16) | (minor << 8) | major;
+ }
+
+ // <summary>
+ // Returns a stringified representation of the version, format:
+ // major.minor[.build[.revision]]
+ // </summary>
+ public override string ToString ()
+ {
+ string mm = major.ToString () + "." + minor.ToString ();
+
+ if (build != UNDEFINED)
+ mm = mm + "." + build.ToString ();
+ if (revision != UNDEFINED)
+ mm = mm + "." + revision.ToString ();
+
+ return mm;
+ }
+
+ // <summary>
+ // LAME: This API is lame, since there is no way of knowing
+ // how many fields a Version object has, it is unfair to throw
+ // an ArgumentException, but this is what the spec claims.
+ //
+ // ie, Version a = new Version (1, 2); a.ToString (3) should
+ // throw the expcetion.
+ // </summary>
+ public string ToString (int fields)
+ {
+ if (fields == 0)
+ return "";
+ if (fields == 1)
+ return major.ToString ();
+ if (fields == 2)
+ return major.ToString () + "." + minor.ToString ();
+ if (fields == 3){
+ if (build == UNDEFINED)
+ throw new ArgumentException (Locale.GetText ("fields is larger than the number of components defined in this instance"));
+ return major.ToString () + "." + minor.ToString () + "." +
+ build.ToString ();
+ }
+ if (fields == 4){
+ if (build == UNDEFINED || revision == UNDEFINED)
+ throw new ArgumentException (Locale.GetText ("fields is larger than the number of components defined in this instance"));
+ return major.ToString () + "." + minor.ToString () + "." +
+ build.ToString () + "." + revision.ToString ();
+ }
+ throw new ArgumentException (Locale.GetText ("Invalid fields parameter: ") + fields.ToString());
+ }
+
+ public static bool operator== (Version v1, Version v2)
+ {
+ return v1.Equals (v2);
+ }
+
+ public static bool operator!= (Version v1, Version v2)
+ {
+ return !v1.Equals (v2);
+ }
+
+ public static bool operator> (Version v1, Version v2)
+ {
+ return v1.CompareTo (v2) > 0;
+ }
+
+ public static bool operator>= (Version v1, Version v2)
+ {
+ return v1.CompareTo (v2) >= 0;
+ }
+
+ public static bool operator< (Version v1, Version v2)
+ {
+ return v1.CompareTo (v2) < 0;
+ }
+
+ public static bool operator<= (Version v1, Version v2)
+ {
+ return v1.CompareTo (v2) <= 0;
+ }
+
}
}
+
+
projects / mono.git / blobdiff