crypto/src/asn1/x500/DirectoryString.cs


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using System;

using Org.BouncyCastle.Utilities;

namespace Org.BouncyCastle.Asn1.X500
{
	public class DirectoryString
		: Asn1Encodable, IAsn1Choice, IAsn1String
	{
		private readonly DerStringBase str;

		public static DirectoryString GetInstance(object obj)
		{
			if (obj == null || obj is DirectoryString)
				return (DirectoryString) obj;

            if (obj is DerStringBase)
			{
				if (obj is DerT61String
					|| obj is DerPrintableString
					|| obj is DerUniversalString
					|| obj is DerUtf8String
					|| obj is DerBmpString)
				{
					return new DirectoryString((DerStringBase) obj);
				}
			}

            throw new ArgumentException("unknown object in factory: " + Platform.GetTypeName(obj), "obj");
		}

        public static DirectoryString GetInstance(Asn1TaggedObject obj, bool isExplicit)
        {
            return Asn1Utilities.GetInstanceFromChoice(obj, isExplicit, GetInstance);
        }

		private DirectoryString(
			DerStringBase str)
		{
			this.str = str;
		}

		public DirectoryString(
			string str)
		{
			this.str = new DerUtf8String(str);
		}

		public string GetString()
		{
			return str.GetString();
		}

		/**
		 * <pre>
		 *  DirectoryString ::= CHOICE {
		 *    teletexString               TeletexString (SIZE (1..MAX)),
		 *    printableString             PrintableString (SIZE (1..MAX)),
		 *    universalString             UniversalString (SIZE (1..MAX)),
		 *    utf8String                  UTF8String (SIZE (1..MAX)),
		 *    bmpString                   BMPString (SIZE (1..MAX))  }
		 * </pre>
		 */
		public override Asn1Object ToAsn1Object()
		{
			return str.ToAsn1Object();
		}
	}
}