Lucene.Net.Analysis.Synonym.SlowSynonymFilterFactory.SplitWS C# (CSharp) Method

        public static IList<string> SplitWS(string s, bool decode)
        {
            List<string> lst = new List<string>(2);
            StringBuilder sb = new StringBuilder();
            int pos = 0, end = s.Length;
            while (pos < end)
            {
                char ch = s[pos++];
                if (char.IsWhiteSpace(ch))
                {
                    if (sb.Length > 0)
                    {
                        lst.Add(sb.ToString());
                        sb = new StringBuilder();
                    }
                    continue;
                }

                if (ch == '\\')
                {
                    if (!decode)
                    {
                        sb.Append(ch);
                    }
                    if (pos >= end) // ERROR, or let it go?
                    {
                        break;
                    }
                    ch = s[pos++];
                    if (decode)
                    {
                        switch (ch)
                        {
                            case 'n':
                                ch = '\n';
                                break;
                            case 't':
                                ch = '\t';
                                break;
                            case 'r':
                                ch = '\r';
                                break;
                            case 'b':
                                ch = '\b';
                                break;
                            case 'f':
                                ch = '\f';
                                break;
                        }
                    }
                }

                sb.Append(ch);
            }

            if (sb.Length > 0)
            {
                lst.Add(sb.ToString());
            }

            return lst;
        }