Ucs4Encoding.cs

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using System.Text;
 
namespace System.Xml;
 
internal class Ucs4Encoding : Encoding
{
    internal Ucs4Decoder ucs4Decoder;
 
    public override string WebName => EncodingName;
 
    public override int CodePage => 0;
 
    internal static Encoding UCS4_Littleendian => new Ucs4Encoding4321();
 
    internal static Encoding UCS4_Bigendian => new Ucs4Encoding1234();
 
    internal static Encoding UCS4_2143 => new Ucs4Encoding2143();
 
    internal static Encoding UCS4_3412 => new Ucs4Encoding3412();
 
    public override Decoder GetDecoder()
    {
        return ucs4Decoder;
    }
 
    public override int GetByteCount(char[] chars, int index, int count)
    {
        return checked(count * 4);
    }
 
    public override int GetByteCount(char[] chars)
    {
        return chars.Length * 4;
    }
 
    public override byte[] GetBytes(string s)
    {
        return null;
    }
 
    public override int GetBytes(char[] chars, int charIndex, int charCount, byte[] bytes, int byteIndex)
    {
        return 0;
    }
 
    public override int GetMaxByteCount(int charCount)
    {
        return 0;
    }
 
    public override int GetCharCount(byte[] bytes, int index, int count)
    {
        return ucs4Decoder.GetCharCount(bytes, index, count);
    }
 
    public override int GetChars(byte[] bytes, int byteIndex, int byteCount, char[] chars, int charIndex)
    {
        return ucs4Decoder.GetChars(bytes, byteIndex, byteCount, chars, charIndex);
    }
 
    public override int GetMaxCharCount(int byteCount)
    {
        return (byteCount + 3) / 4;
    }
 
    public override int GetCharCount(byte[] bytes)
    {
        return bytes.Length / 4;
    }
 
    public override Encoder GetEncoder()
    {
        return null;
    }
}