Initial Commit

iTechSharp/srcbc/asn1/DerUniversalString.cs

@@ -0,0 +1,105 @@
+using System;
+using System.Text;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1
+{
+    /**
+     * Der UniversalString object.
+     */
+    public class DerUniversalString
+        : DerStringBase
+    {
+        private static readonly char[] table = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+
+		private readonly byte[] str;
+
+		/**
+         * return a Universal string from the passed in object.
+         *
+         * @exception ArgumentException if the object cannot be converted.
+         */
+        public static DerUniversalString GetInstance(
+            object obj)
+        {
+            if (obj == null || obj is DerUniversalString)
+            {
+                return (DerUniversalString)obj;
+            }
+
+            if (obj is Asn1OctetString)
+            {
+                return new DerUniversalString(((Asn1OctetString)obj).GetOctets());
+            }
+
+            throw new ArgumentException("illegal object in GetInstance: " + obj.GetType().Name);
+        }
+
+        /**
+         * return a Universal string 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 DerUniversalString GetInstance(
+            Asn1TaggedObject	obj,
+            bool				explicitly)
+        {
+            return GetInstance(obj.GetObject());
+        }
+
+        /**
+         * basic constructor - byte encoded string.
+         */
+        public DerUniversalString(
+            byte[] str)
+        {
+			if (str == null)
+				throw new ArgumentNullException("str");
+
+			this.str = str;
+        }
+
+        public override string GetString()
+        {
+			StringBuilder buffer = new StringBuilder("#");
+			byte[] enc = GetDerEncoded();
+
+			for (int i = 0; i != enc.Length; i++)
+			{
+				uint ubyte = enc[i];
+				buffer.Append(table[(ubyte >> 4) & 0xf]);
+				buffer.Append(table[enc[i] & 0xf]);
+			}
+
+            return buffer.ToString();
+        }
+
+		public byte[] GetOctets()
+        {
+            return (byte[]) str.Clone();
+        }
+
+		internal override void Encode(
+            DerOutputStream derOut)
+        {
+            derOut.WriteEncoded(Asn1Tags.UniversalString, this.str);
+        }
+
+		protected override bool Asn1Equals(
+			Asn1Object asn1Object)
+		{
+			DerUniversalString other = asn1Object as DerUniversalString;
+
+			if (other == null)
+				return false;
+
+//			return this.GetString().Equals(other.GetString());
+			return Arrays.AreEqual(this.str, other.str);
+        }
+    }
+}