/// <summary>
/// Creates a new instance of <see cref="UTF32EncodingInfo"/>.
/// </summary>
/// <param name="encoding">The optional <see cref="UTF32Encoding"/> to use.</param>
public UTF32EncodingInfo(
UTF32Encoding encoding = null
)
{
var isBigEndian = encoding != null && UTF16EncodingInfo.IsBigEndian(encoding);
this.IsBigEndian = isBigEndian;
this.Encoding = encoding ?? new UTF32Encoding(isBigEndian, false, false);
}
/// <summary>
/// Creates the default encoding information for given <see cref="Encoding"/>.
/// </summary>
/// <param name="encoding">This <see cref="Encoding"/>.</param>
/// <returns>A new instance of <see cref="IEncodingInfo"/>.</returns>
/// <exception cref="InvalidOperationException">If this method could not automatically deduct which <see cref="IEncodingInfo"/> to create.</exception>
public static IEncodingInfo CreateDefaultEncodingInfo(this Encoding encoding)
{
ArgumentValidator.ValidateNotNullReference(encoding);
switch (encoding)
{
#if !NETSTANDARD1_0 && !NETSTANDARD1_1
case ASCIIEncoding ascii:
return(ASCIIEncodingInfo.Instance);
#endif
case UTF8Encoding utf8:
return(new UTF8EncodingInfo(utf8));
case UnicodeEncoding utf16:
if (ReferenceEquals(utf16, Encoding.Unicode))
{
return(new UTF16LEEncodingInfo(utf16));
}
else if (ReferenceEquals(utf16, Encoding.BigEndianUnicode) || UTF16EncodingInfo.IsBigEndian(utf16))
{
return(new UTF16BEEncodingInfo(utf16));
}
else
{
return(new UTF16LEEncodingInfo(utf16));
}
#if NET_40 || NETSTANDARD1_5 || NET_45
case UTF32Encoding utf32:
return(new UTF32EncodingInfo(utf32));
#endif
case null:
return(null);
default:
throw new InvalidOperationException($"Could not create default encoding info for {encoding}.");
}
}