100 lines
2.4 KiB
C#
100 lines
2.4 KiB
C#
using System;
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using System.Text;
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namespace Org.BouncyCastle.Asn1
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{
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/**
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* Der UTF8String object.
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*/
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public class DerUtf8String
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: DerStringBase
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{
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private readonly string str;
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/**
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* return an UTF8 string from the passed in object.
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*
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* @exception ArgumentException if the object cannot be converted.
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*/
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public static DerUtf8String GetInstance(
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object obj)
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{
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if (obj == null || obj is DerUtf8String)
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{
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return (DerUtf8String)obj;
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}
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if (obj is Asn1OctetString)
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{
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return new DerUtf8String(((Asn1OctetString)obj).GetOctets());
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}
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if (obj is Asn1TaggedObject)
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{
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return GetInstance(((Asn1TaggedObject)obj).GetObject());
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}
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throw new ArgumentException("illegal object in GetInstance: " + obj.GetType().Name);
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}
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/**
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* return an UTF8 string from a tagged object.
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*
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* @param obj the tagged object holding the object we want
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* @param explicitly true if the object is meant to be explicitly
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* tagged false otherwise.
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* @exception ArgumentException if the tagged object cannot
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* be converted.
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*/
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public static DerUtf8String GetInstance(
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Asn1TaggedObject obj,
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bool explicitly)
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{
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return GetInstance(obj.GetObject());
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}
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/**
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* basic constructor - byte encoded string.
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*/
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internal DerUtf8String(
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byte[] str)
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: this(Encoding.UTF8.GetString(str, 0, str.Length))
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{
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}
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/**
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* basic constructor
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*/
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public DerUtf8String(
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string str)
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{
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if (str == null)
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throw new ArgumentNullException("str");
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this.str = str;
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}
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public override string GetString()
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{
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return str;
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}
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protected override bool Asn1Equals(
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Asn1Object asn1Object)
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{
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DerUtf8String other = asn1Object as DerUtf8String;
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if (other == null)
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return false;
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return this.str.Equals(other.str);
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}
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internal override void Encode(
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DerOutputStream derOut)
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{
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derOut.WriteEncoded(Asn1Tags.Utf8String, Encoding.UTF8.GetBytes(str));
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}
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}
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}
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