#region License // Copyright (c) 2007 James Newton-King // // Permission is hereby granted, free of charge, to any person // obtaining a copy of this software and associated documentation // files (the "Software"), to deal in the Software without // restriction, including without limitation the rights to use, // copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the // Software is furnished to do so, subject to the following // conditions: // // The above copyright notice and this permission notice shall be // included in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES // OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, // WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR // OTHER DEALINGS IN THE SOFTWARE. #endregion using System; using System.Globalization; using LC.Newtonsoft.Json.Utilities; namespace LC.Newtonsoft.Json.Converters { /// /// Converts a to and from a string (e.g. "1.2.3.4"). /// public class VersionConverter : JsonConverter { /// /// Writes the JSON representation of the object. /// /// The to write to. /// The value. /// The calling serializer. public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) { if (value == null) { writer.WriteNull(); } else if (value is Version) { writer.WriteValue(value.ToString()); } else { throw new JsonSerializationException("Expected Version object value"); } } /// /// Reads the JSON representation of the object. /// /// The to read from. /// Type of the object. /// The existing property value of the JSON that is being converted. /// The calling serializer. /// The object value. public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) { if (reader.TokenType == JsonToken.Null) { return null; } else { if (reader.TokenType == JsonToken.String) { try { Version v = new Version((string)reader.Value); return v; } catch (Exception ex) { throw JsonSerializationException.Create(reader, "Error parsing version string: {0}".FormatWith(CultureInfo.InvariantCulture, reader.Value), ex); } } else { throw JsonSerializationException.Create(reader, "Unexpected token or value when parsing version. Token: {0}, Value: {1}".FormatWith(CultureInfo.InvariantCulture, reader.TokenType, reader.Value)); } } } /// /// Determines whether this instance can convert the specified object type. /// /// Type of the object. /// /// true if this instance can convert the specified object type; otherwise, false. /// public override bool CanConvert(Type objectType) { return objectType == typeof(Version); } } }