kopia lustrzana https://github.com/dl2alf/AirScout
132 wiersze
4.0 KiB
C#
132 wiersze
4.0 KiB
C#
using System;
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using System.IO;
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using Org.BouncyCastle.Utilities;
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namespace Org.BouncyCastle.Asn1
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{
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/**
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* VisibleString object.
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*/
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public class DerVisibleString
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: DerStringBase
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{
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internal class Meta : Asn1UniversalType
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{
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internal static readonly Asn1UniversalType Instance = new Meta();
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private Meta() : base(typeof(DerVisibleString), Asn1Tags.VisibleString) {}
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internal override Asn1Object FromImplicitPrimitive(DerOctetString octetString)
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{
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return CreatePrimitive(octetString.GetOctets());
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}
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}
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/**
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* return a visible 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 DerVisibleString GetInstance(
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object obj)
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{
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if (obj == null || obj is DerVisibleString)
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{
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return (DerVisibleString)obj;
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}
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else if (obj is IAsn1Convertible)
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{
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Asn1Object asn1Object = ((IAsn1Convertible)obj).ToAsn1Object();
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if (asn1Object is DerVisibleString)
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return (DerVisibleString)asn1Object;
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}
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else if (obj is byte[])
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{
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try
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{
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return (DerVisibleString)Meta.Instance.FromByteArray((byte[])obj);
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}
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catch (IOException e)
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{
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throw new ArgumentException("failed to construct visible string from byte[]: " + e.Message);
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}
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}
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throw new ArgumentException("illegal object in GetInstance: " + Platform.GetTypeName(obj));
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}
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/**
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* return a visible string from a tagged object.
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*
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* @param taggedObject the tagged object holding the object we want
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* @param declaredExplicit true if the object is meant to be explicitly tagged false otherwise.
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* @exception ArgumentException if the tagged object cannot be converted.
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*/
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public static DerVisibleString GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
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{
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return (DerVisibleString)Meta.Instance.GetContextInstance(taggedObject, declaredExplicit);
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}
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private readonly byte[] m_contents;
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public DerVisibleString(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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m_contents = Strings.ToAsciiByteArray(str);
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}
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public DerVisibleString(byte[] contents)
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: this(contents, true)
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{
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}
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internal DerVisibleString(byte[] contents, bool clone)
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{
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if (null == contents)
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throw new ArgumentNullException("contents");
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m_contents = clone ? Arrays.Clone(contents) : contents;
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}
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public override string GetString()
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{
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return Strings.FromAsciiByteArray(m_contents);
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}
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public byte[] GetOctets()
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{
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return Arrays.Clone(m_contents);
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}
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internal override IAsn1Encoding GetEncoding(int encoding)
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{
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return new PrimitiveEncoding(Asn1Tags.Universal, Asn1Tags.VisibleString, m_contents);
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}
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internal override IAsn1Encoding GetEncodingImplicit(int encoding, int tagClass, int tagNo)
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{
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return new PrimitiveEncoding(tagClass, tagNo, m_contents);
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}
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protected override bool Asn1Equals(Asn1Object asn1Object)
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{
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DerVisibleString that = asn1Object as DerVisibleString;
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return null != that
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&& Arrays.AreEqual(this.m_contents, that.m_contents);
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}
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protected override int Asn1GetHashCode()
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{
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return Arrays.GetHashCode(m_contents);
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}
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internal static DerVisibleString CreatePrimitive(byte[] contents)
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{
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return new DerVisibleString(contents, false);
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}
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}
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}
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