Asn1Parser/Universal/Asn1NumericString.cs - master - diev/PKISolutions-Asn1DerParser.NET

Asn1Parser/Universal/Asn1NumericString.cs
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23 фев 2023, 16:54
23 фев 2023, 16:547bd1793
using System;
using System.IO;
using System.Linq;
using System.Text;

namespace SysadminsLV.Asn1Parser.Universal;

/// <summary>
/// Represents an ASN.1 <strong>NumericString</strong> data type. NumericString consists of numeric characters
/// (0-9) and space.
/// </summary>
public sealed class Asn1NumericString : Asn1String {
    const Asn1Type TYPE = Asn1Type.NumericString;

    /// <summary>
    /// Initializes a new instance of the <strong>Asn1NumericString</strong> class from an <see cref="Asn1Reader"/>
    /// object.
    /// </summary>
    /// <param name="asn">Existing <see cref="Asn1Reader"/> object.</param>
    /// <exception cref="Asn1InvalidTagException">
    /// Current position in the <strong>ASN.1</strong> object is not <strong>NumericString</strong> data type.
    /// </exception>
    /// <exception cref="InvalidDataException">
    /// Input data contains invalid NumericString character.
    /// </exception>
    public Asn1NumericString(Asn1Reader asn) : base(asn, TYPE) {
        m_decode(asn);
    }
    /// <summary>
    /// Initializes a new instance of <strong>Asn1NumericString</strong> from a ASN.1-encoded byte array.
    /// </summary>
    /// <param name="rawData">ASN.1-encoded byte array.</param>
    /// <exception cref="Asn1InvalidTagException">
    /// <strong>rawData</strong> is not <strong>NumericString</strong> data type.
    /// </exception>
    /// <exception cref="InvalidDataException">
    /// Input data contains invalid NumericString character.
    /// </exception>
    public Asn1NumericString(Byte[] rawData) : this(new Asn1Reader(rawData)) { }
    /// <summary>
    /// Initializes a new instance of the <strong>Asn1NumericString</strong> class from a unicode string.
    /// </summary>
    /// <param name="inputString">A unicode string to encode.</param>
    /// <exception cref="InvalidDataException">
    /// Input data contains invalid NumericString character.
    /// </exception>
    public Asn1NumericString(String inputString) : base(TYPE) {
        m_encode(inputString);
    }

    void m_encode(String inputString) {
        if (inputString.Any(c => (c < 48 || c > 57) && c != 32)) {
            throw new InvalidDataException(String.Format(InvalidType, TYPE.ToString()));
        }
        Value = inputString;
        Initialize(new Asn1Reader(Asn1Utils.Encode(Encoding.ASCII.GetBytes(inputString), TYPE)));
    }
    void m_decode(Asn1Reader asn) {
        if (asn.GetPayload().Any(b => (b < 48 || b > 57) && b != 32)) {
            throw new InvalidDataException(String.Format(InvalidType, TYPE.ToString()));
        }
        Value = Encoding.ASCII.GetString(asn.GetPayload());
    }
        
    /// <inheritdoc/>
    public override String GetDisplayValue() {
        return Value;
    }
}