NameOrPseudonym.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » X509 » SigI » C# / CSharp Open Source

using System;
using System.Collections;

using Org.BouncyCastle.Asn1.X500;

namespace Org.BouncyCastle.Asn1.X509.SigI{
  /**
  * Structure for a name or pseudonym.
  * 
  * <pre>
  *       NameOrPseudonym ::= CHOICE {
  *          surAndGivenName SEQUENCE {
  *            surName DirectoryString,
  *            givenName SEQUENCE OF DirectoryString 
  *         },
  *          pseudonym DirectoryString 
  *       }
  * </pre>
  * 
  * @see org.bouncycastle.asn1.x509.sigi.PersonalData
  * 
  */
  public class NameOrPseudonym
    : Asn1Encodable, IAsn1Choice
  {
    private readonly DirectoryString  pseudonym;
    private readonly DirectoryString  surname;
    private readonly Asn1Sequence    givenName;

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

      if (obj is IAsn1String)
      {
        return new NameOrPseudonym(DirectoryString.GetInstance(obj));
      }

      if (obj is Asn1Sequence)
      {
        return new NameOrPseudonym((Asn1Sequence) obj);
      }

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

    /**
    * Constructor from DERString.
    * <p/>
    * The sequence is of type NameOrPseudonym:
    * <p/>
    * <pre>
    *       NameOrPseudonym ::= CHOICE {
    *          surAndGivenName SEQUENCE {
    *            surName DirectoryString,
    *            givenName SEQUENCE OF DirectoryString
    *         },
    *          pseudonym DirectoryString
    *       }
    * </pre>
    * @param pseudonym pseudonym value to use.
    */
    public NameOrPseudonym(
      DirectoryString pseudonym)
    {
      this.pseudonym = pseudonym;
    }

    /**
    * Constructor from Asn1Sequence.
    * <p/>
    * The sequence is of type NameOrPseudonym:
    * <p/>
    * <pre>
    *       NameOrPseudonym ::= CHOICE {
    *          surAndGivenName SEQUENCE {
    *            surName DirectoryString,
    *            givenName SEQUENCE OF DirectoryString
    *         },
    *          pseudonym DirectoryString
    *       }
    * </pre>
    *
    * @param seq The ASN.1 sequence.
    */
    private NameOrPseudonym(
      Asn1Sequence seq)
    {
      if (seq.Count != 2)
        throw new ArgumentException("Bad sequence size: " + seq.Count);

      if (!(seq[0] is IAsn1String))
        throw new ArgumentException("Bad object encountered: " + seq[0].GetType().Name);

      surname = DirectoryString.GetInstance(seq[0]);
      givenName = Asn1Sequence.GetInstance(seq[1]);
    }

    /**
    * Constructor from a given details.
    *
    * @param pseudonym The pseudonym.
    */
    public NameOrPseudonym(
      string pseudonym)
      : this(new DirectoryString(pseudonym))
    {
    }

    /**
     * Constructor from a given details.
     *
     * @param surname   The surname.
     * @param givenName A sequence of directory strings making up the givenName
     */
    public NameOrPseudonym(
      DirectoryString  surname,
      Asn1Sequence  givenName)
    {
      this.surname = surname;
      this.givenName = givenName;
    }

    public DirectoryString Pseudonym
    {
      get { return pseudonym; }
    }

    public DirectoryString Surname
    {
      get { return surname; }
    }

    public DirectoryString[] GetGivenName()
    {
      DirectoryString[] items = new DirectoryString[givenName.Count];
      int count = 0;
      foreach (object o in givenName)
      {
        items[count++] = DirectoryString.GetInstance(o);
      }
      return items;
    }

    /**
    * Produce an object suitable for an Asn1OutputStream.
    * <p/>
    * Returns:
    * <p/>
    * <pre>
    *       NameOrPseudonym ::= CHOICE {
    *          surAndGivenName SEQUENCE {
    *            surName DirectoryString,
    *            givenName SEQUENCE OF DirectoryString
    *         },
    *          pseudonym DirectoryString
    *       }
    * </pre>
    *
    * @return an Asn1Object
    */
    public override Asn1Object ToAsn1Object()
    {
      if (pseudonym != null)
      {
        return pseudonym.ToAsn1Object();
      }

      return new DerSequence(surname, givenName);
    }
  }
}