Appboy.Utilities.Json.Parser.ParseString C# (CSharp) Method

            private string ParseString()
            {
                StringBuilder s = new StringBuilder();
                char c;

                // ditch opening quote
                this.json.Read();

                bool parsing = true;
                while (parsing)
                {
                    if (this.json.Peek() == -1)
                    {
                        parsing = false;
                        break;
                    }

                    c = this.NextChar;
                    switch (c)
                    {
                        case '"':
                            parsing = false;
                            break;
                        case '\\':
                            if (this.json.Peek() == -1)
                            {
                                parsing = false;
                                break;
                            }

                            c = this.NextChar;
                            switch (c)
                            {
                                case '"':
                                case '\\':
                                case '/':
                                    s.Append(c);
                                    break;
                                case 'b':
                                    s.Append('\b');
                                    break;
                                case 'f':
                                    s.Append('\f');
                                    break;
                                case 'n':
                                    s.Append('\n');
                                    break;
                                case 'r':
                                    s.Append('\r');
                                    break;
                                case 't':
                                    s.Append('\t');
                                    break;
                                case 'u':
                                    var hex = new StringBuilder();

                                    for (int i = 0; i < 4; i++)
                                    {
                                        hex.Append(this.NextChar);
                                    }

                                    s.Append((char)Convert.ToInt32(hex.ToString(), 16));
                                    break;
                            }

                            break;
                        default:
                            s.Append(c);
                            break;
                    }
                }

                return s.ToString();
            }