private string EncodeText(string text, RtfTextDataType type)
{
if (type == RtfTextDataType.Raw)
{
return(text);
}
if (type == RtfTextDataType.HyperLink)
{
return(Uri.EscapeUriString(text));
}
StringBuilder encodedText = new StringBuilder();
byte[] data = _encoding.GetBytes(text);
for (int i = 0; i < data.Length; i++)
{
if (text[i] == Encoding.ASCII.GetChars(data, i, 1)[0])
{
if (text[i] == '\\' || text[i] == '{' || text[i] == '}')
{
encodedText.Append('\\');
}
encodedText.Append(text[i]);
}
else if (text[i] == _encoding.GetChars(data, i, 1)[0])
{
encodedText.Append('\\').Append('\'').Append(Convert.ToString(data[i], 16));
}
else
{
byte[] unicode = Encoding.Unicode.GetBytes(text[i].ToString());
encodedText.Append('\\').Append('u').Append(BitConverter.ToUInt16(unicode, 0).ToString()).Append('?');
}
if (sb.Length + encodedText.Length - lastNewLineIndex > preferredWidth)
{
encodedText.AppendLine();
lastNewLineIndex = sb.Length + encodedText.Length;
}
}
return(encodedText.ToString());
}
/// <summary>
/// Initializes a new instance of ESCommon.Rtf.RtfTextDataAttribute class.
/// </summary>
/// <param name="type">Text data type.</param>
internal RtfTextDataAttribute(RtfTextDataType type)
{
_type = type;
}