Initial Commit

iTechSharp/srcbc/asn1/DerEnumerated.cs

@@ -0,0 +1,103 @@
+using System;
+
+using Org.BouncyCastle.Math;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1
+{
+    public class DerEnumerated
+        : Asn1Object
+    {
+        private readonly byte[] bytes;
+
+		/**
+         * return an integer from the passed in object
+         *
+         * @exception ArgumentException if the object cannot be converted.
+         */
+        public static DerEnumerated GetInstance(
+            object obj)
+        {
+            if (obj == null || obj is DerEnumerated)
+            {
+                return (DerEnumerated)obj;
+            }
+
+            if (obj is Asn1OctetString)
+            {
+                return new DerEnumerated(((Asn1OctetString)obj).GetOctets());
+            }
+
+            if (obj is Asn1TaggedObject)
+            {
+                return GetInstance(((Asn1TaggedObject)obj).GetObject());
+            }
+
+            throw new ArgumentException("illegal object in GetInstance: " + obj.GetType().Name);
+        }
+
+        /**
+         * return an Enumerated from a tagged object.
+         *
+         * @param obj the tagged object holding the object we want
+         * @param explicitly true if the object is meant to be explicitly
+         *              tagged false otherwise.
+         * @exception ArgumentException if the tagged object cannot
+         *               be converted.
+         */
+        public static DerEnumerated GetInstance(
+            Asn1TaggedObject obj,
+            bool          explicitly)
+        {
+            return GetInstance(obj.GetObject());
+        }
+
+        public DerEnumerated(
+            int         value)
+        {
+            bytes = BigInteger.ValueOf(value).ToByteArray();
+        }
+
+        public DerEnumerated(
+            BigInteger   value)
+        {
+            bytes = value.ToByteArray();
+        }
+
+        public DerEnumerated(
+            byte[]   bytes)
+        {
+            this.bytes = bytes;
+        }
+
+        public BigInteger Value
+        {
+            get
+            {
+                return new BigInteger(bytes);
+            }
+        }
+
+		internal override void Encode(
+            DerOutputStream derOut)
+        {
+            derOut.WriteEncoded(Asn1Tags.Enumerated, bytes);
+        }
+
+		protected override bool Asn1Equals(
+			Asn1Object asn1Object)
+        {
+			DerEnumerated other = asn1Object as DerEnumerated;
+
+			if (other == null)
+				return false;
+
+			return Arrays.AreEqual(this.bytes, other.bytes);
+        }
+
+		protected override int Asn1GetHashCode()
+		{
+			return Arrays.GetHashCode(bytes);
+        }
+    }
+}