iTextSharp.text.pdf.PdfPKCS7.X509NameTokenizer.NextToken C# (CSharp) Метод

            public String NextToken() {
                if (index == oid.Length) {
                    return null;
                }
                
                int     end = index + 1;
                bool quoted = false;
                bool escaped = false;
                
                buf.Length = 0;
                
                while (end != oid.Length) {
                    char    c = oid[end];
                    
                    if (c == '"') {
                        if (!escaped) {
                            quoted = !quoted;
                        }
                        else {
                            buf.Append(c);
                        }
                        escaped = false;
                    }
                    else {
                        if (escaped || quoted) {
                            buf.Append(c);
                            escaped = false;
                        }
                        else if (c == '\\') {
                            escaped = true;
                        }
                        else if (c == ',') {
                            break;
                        }
                        else {
                            buf.Append(c);
                        }
                    }
                    end++;
                }
                
                index = end;
                return buf.ToString().Trim();
            }
        }