BerSequence.cs :  » PDF » iTextSharp » Org » BouncyCastle » Asn1 » C# / CSharp Open Source

namespace Org.BouncyCastle.Asn1{
  public class BerSequence
    : DerSequence
  {
    public static new readonly BerSequence Empty = new BerSequence();

    public static new BerSequence FromVector(
      Asn1EncodableVector v)
    {
      return v.Count < 1 ? Empty : new BerSequence(v);
    }

    /**
     * create an empty sequence
     */
    public BerSequence()
    {
    }

    /**
     * create a sequence containing one object
     */
    public BerSequence(
      Asn1Encodable obj)
      : base(obj)
    {
    }

    public BerSequence(
      params Asn1Encodable[] v)
      : base(v)
    {
    }

    /**
     * create a sequence containing a vector of objects.
     */
    public BerSequence(
      Asn1EncodableVector v)
      : base(v)
    {
    }

    /*
     */
    internal override void Encode(
      DerOutputStream derOut)
    {
      if (derOut is Asn1OutputStream || derOut is BerOutputStream)
      {
        derOut.WriteByte(Asn1Tags.Sequence | Asn1Tags.Constructed);
        derOut.WriteByte(0x80);

        foreach (Asn1Encodable o in this)
        {
          derOut.WriteObject(o);
        }

        derOut.WriteByte(0x00);
        derOut.WriteByte(0x00);
      }
      else
      {
        base.Encode(derOut);
      }
    }
  }
}