DerUtf8String
using Org.BouncyCastle.Utilities;
using System;
using System.IO;
namespace Org.BouncyCastle.Asn1
{
public class DerUtf8String : DerStringBase
{
internal class Meta : Asn1UniversalType
{
internal static readonly Asn1UniversalType Instance = new Meta();
private Meta()
: base(typeof(DerUtf8String), 12)
{
}
internal override Asn1Object FromImplicitPrimitive(DerOctetString octetString)
{
return CreatePrimitive(octetString.GetOctets());
}
}
private readonly byte[] m_contents;
public static DerUtf8String GetInstance(object obj)
{
if (obj == null)
return null;
DerUtf8String derUtf8String = obj as DerUtf8String;
if (derUtf8String != null)
return derUtf8String;
IAsn1Convertible asn1Convertible = obj as IAsn1Convertible;
if (asn1Convertible != null) {
DerUtf8String derUtf8String2 = asn1Convertible.ToAsn1Object() as DerUtf8String;
if (derUtf8String2 != null)
return derUtf8String2;
} else {
byte[] array = obj as byte[];
if (array != null)
try {
return (DerUtf8String)Meta.Instance.FromByteArray(array);
} catch (IOException ex) {
throw new ArgumentException("failed to construct UTF8 string from byte[]: " + ex.Message);
}
}
throw new ArgumentException("illegal object in GetInstance: " + Platform.GetTypeName(obj));
}
public static DerUtf8String GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return (DerUtf8String)Meta.Instance.GetContextInstance(taggedObject, declaredExplicit);
}
public DerUtf8String(string str)
: this(Strings.ToUtf8ByteArray(str), false)
{
}
public DerUtf8String(byte[] contents)
: this(contents, true)
{
}
internal DerUtf8String(byte[] contents, bool clone)
{
if (contents == null)
throw new ArgumentNullException("contents");
m_contents = (clone ? Arrays.Clone(contents) : contents);
}
public override string GetString()
{
return Strings.FromUtf8ByteArray(m_contents);
}
protected override bool Asn1Equals(Asn1Object asn1Object)
{
DerUtf8String derUtf8String = asn1Object as DerUtf8String;
if (derUtf8String != null)
return Arrays.AreEqual(m_contents, derUtf8String.m_contents);
return false;
}
protected override int Asn1GetHashCode()
{
return Arrays.GetHashCode(m_contents);
}
internal override IAsn1Encoding GetEncoding(int encoding)
{
return new PrimitiveEncoding(0, 12, m_contents);
}
internal override IAsn1Encoding GetEncodingImplicit(int encoding, int tagClass, int tagNo)
{
return new PrimitiveEncoding(tagClass, tagNo, m_contents);
}
internal sealed override DerEncoding GetEncodingDer()
{
return new PrimitiveDerEncoding(0, 12, m_contents);
}
internal sealed override DerEncoding GetEncodingDerImplicit(int tagClass, int tagNo)
{
return new PrimitiveDerEncoding(tagClass, tagNo, m_contents);
}
internal static DerUtf8String CreatePrimitive(byte[] contents)
{
return new DerUtf8String(contents, false);
}
}
}