fCraft.Chat.ReplacePercentColorCodes C# (CSharp) Method

        public static string ReplacePercentColorCodes( [NotNull] string message, bool allowNewlines ) {
            if ( message == null )
                throw new ArgumentNullException( "message" );
            int startIndex = message.IndexOf( '%' );
            if ( startIndex == -1 ) {
                return message; // break out early if there are no percent marks
            }

            StringBuilder output = new StringBuilder( message.Length );
            int lastAppendedIndex = 0;
            while ( startIndex != -1 && startIndex < message.Length - 1 ) {
                // see if colorcode was escaped (if odd number of backslashes precede it)
                bool escaped = false;
                for ( int i = startIndex - 1; i >= 0 && message[i] == '\\'; i-- ) {
                    escaped = !escaped;
                }
                // extract the colorcode
                char colorCode = message[startIndex + 1];
                if ( Color.IsValidColorCode( colorCode ) || allowNewlines && ( colorCode == 'n' || colorCode == 'N' ) ) {
                    if ( escaped ) {
                        // it was escaped; remove escaping character
                        startIndex++;
                        output.Append( message, lastAppendedIndex, startIndex - lastAppendedIndex - 2 );
                        lastAppendedIndex = startIndex - 1;
                    } else {
                        // it was not escaped; insert substitute character
                        output.Append( message, lastAppendedIndex, startIndex - lastAppendedIndex );
                        output.Append( '&' );
                        lastAppendedIndex = startIndex + 1;
                        startIndex += 2;
                    }
                } else {
                    startIndex++; // unrecognized colorcode, keep going
                }
                startIndex = message.IndexOf( '%', startIndex );
            }
            // append the leftovers
            output.Append( message, lastAppendedIndex, message.Length - lastAppendedIndex );
            return output.ToString();
        }

        public static string StripColors([NotNull] string message, bool replacePercents)
        {
            if (message == null)
            {
                throw new ArgumentNullException("message");
            }
            if (replacePercents)
            {
                message = Chat.ReplacePercentColorCodes(message, false);
            }
            int start = message.IndexOf('&');

            if (start == -1)
            {
                return(message);
            }

            int           lastInsert = 0;
            StringBuilder output     = new StringBuilder(message.Length);

            while (start != -1)
            {
                output.Append(message, lastInsert, start - lastInsert);
                lastInsert = Math.Min(start + 2, message.Length);
                start      = message.IndexOf('&', lastInsert);
            }
            output.Append(message, lastInsert, message.Length - lastInsert);
            return(output.ToString());
        }