/SourceCode_3rdParty_Dlls/JayRock [JSON lib]/Jayrock.Json/Json/Conversion/Converters/DateTimeImporter.cs

#region License, Terms and Conditions

//

// Jayrock - JSON and JSON-RPC for Microsoft .NET Framework and Mono

// Written by Atif Aziz (www.raboof.com)

// Copyright (c) 2005 Atif Aziz. All rights reserved.

//

// This library is free software; you can redistribute it and/or modify it under

// the terms of the GNU Lesser General Public License as published by the Free

// Software Foundation; either version 2.1 of the License, or (at your option)

// any later version.

//

// This library is distributed in the hope that it will be useful, but WITHOUT

// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more

// details.

//

// You should have received a copy of the GNU Lesser General Public License

// along with this library; if not, write to the Free Software Foundation, Inc.,

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 

//

#endregion



namespace Jayrock.Json.Conversion.Converters

{

    #region Imports



    using System;

    using System.Diagnostics;

    using System.Globalization;

    using System.Xml;



    #endregion



    public sealed class DateTimeImporter : ImporterBase

    {

        public DateTimeImporter() : 

            base(typeof(DateTime)) {}

        

        protected override object ImportFromString(ImportContext context, JsonReader reader)

        {

            Debug.Assert(context != null);

            Debug.Assert(reader != null);



            try

            {

                return ReadReturning(reader, XmlConvert.ToDateTime(reader.Text

#if !NET_1_0 && !NET_1_1

                        , XmlDateTimeSerializationMode.Local

#endif

                ));

            }

            catch (FormatException e)

            {

                throw new JsonException("Error importing JSON String as System.DateTime.", e);

            }

        }



        protected override object ImportFromNumber(ImportContext context, JsonReader reader)

        {

            Debug.Assert(context != null);

            Debug.Assert(reader != null);



            string text = reader.Text;



            double time;



            try

            {

                time = Convert.ToDouble(text, CultureInfo.InvariantCulture);

            }

            catch (FormatException e)

            {

                throw NumberError(e, text);

            }

            catch (OverflowException e)

            {

                throw NumberError(e, text);

            }



            try

            {

                return ReadReturning(reader, UnixTime.ToDateTime(time));

            }

            catch (ArgumentException e)

            {

                throw NumberError(e, text);

            }

        }



        private static JsonException NumberError(Exception e, string text)

        {

            return new JsonException(string.Format("Error importing JSON Number {0} as System.DateTime.", text), e);

        }



        protected override JsonException GetImportException(string jsonValueType)

        {

            return new JsonException(string.Format("Found {0} where expecting a JSON String in ISO 8601 time format or a JSON Number expressed in Unix time.", jsonValueType));

        }

    }

}