private static string ConvertBinaryToText(ReadOnlyMemory <byte> data, BinaryInputEncoding encoding)
{
switch (encoding)
{
case BinaryInputEncoding.Hex: return(Hex.FromBytes(data));
case BinaryInputEncoding.Base64: return(Convert.ToBase64String(data.Span));
}
return(Encoding.Default.GetString(data.Span));
}
private async Task OnUploadFile()
{
var data = await _uploadFileDialog.PromptToUploadFile();
if (!data.IsEmpty)
{
_data = data;
_encoding = GuessAtBestEncoding(_data);
_text = ConvertBinaryToText(_data, _encoding);
_textParsingError = null;
NotifyValueChanged();
}
}
private void OnEncodingChanged(BinaryInputEncoding encoding)
{
_encoding = encoding;
(_data, _textParsingError) = ConvertTextToBinary(_text, _encoding);
NotifyValueChanged();
}
private static (ReadOnlyMemory <byte> data, string error) ConvertTextToBinary(string text, BinaryInputEncoding encoding)
{
if (string.IsNullOrEmpty(text))
{
return(ReadOnlyMemory <byte> .Empty, null);
}
switch (encoding)
{
case BinaryInputEncoding.Base64:
try
{
return(Convert.FromBase64String(text), null);
}
catch (FormatException ex)
{
return(ReadOnlyMemory <byte> .Empty, $"Unable to recognize content as Base 64: {ex.Message}");
}
case BinaryInputEncoding.Hex:
try
{
return(Hex.ToBytes(text), null);
}
catch (ArgumentException ex)
{
return(ReadOnlyMemory <byte> .Empty, $"Unable to recognize content as HEX: {ex.Message}");
}
default:
try
{
return(Encoding.Default.GetBytes(text), null);
}
catch (ArgumentException ex)
{
return(ReadOnlyMemory <byte> .Empty, $"Unable to recognize content as text: {ex.Message}");
}
}
}
