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Track labels' module identifiers per game Create JsonToGamesDictionaryConverter
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| using System; | ||
| using System.Linq; | ||
| using System.Collections; | ||
|
|
||
| using Newtonsoft.Json; | ||
| using Newtonsoft.Json.Linq; | ||
|
|
||
| namespace CKAN | ||
| { | ||
| /// <summary> | ||
| /// A property converter for making an old property game-specific. | ||
| /// Turns a String or Array value: | ||
| /// | ||
| /// "myProperty": "a value", | ||
| /// "myOtherProperty": [ "another value" ], | ||
| /// | ||
| /// into a Dictionary with the game names as keys and the original | ||
| /// value as each value: | ||
| /// | ||
| /// "myProperty": { | ||
| /// "KSP": "a value", | ||
| /// "KSP2": "a value" | ||
| /// }, | ||
| /// "myOtherProperty": { | ||
| /// "KSP": [ "another value" ], | ||
| /// "KSP2": [ "another value" ] | ||
| /// }, | ||
| /// | ||
| /// NOTE: Do NOT use with Object values because they can't | ||
| /// be distinguished from an already converted value, and will | ||
| /// just be deserialized as-is into your Dictionary! | ||
| /// | ||
| /// If the value is an empty array: | ||
| /// | ||
| /// "myProperty": [], | ||
| /// | ||
| /// the Dictionary is left empty rather than creating multiple keys | ||
| /// with empty values: | ||
| /// | ||
| /// "myProperty": {}, | ||
| /// </summary> | ||
| public class JsonToGamesDictionaryConverter : JsonConverter | ||
| { | ||
| /// <summary> | ||
| /// Turn a tree of JSON tokens into a dictionary | ||
| /// </summary> | ||
| /// <param name="reader">Object that provides tokens to be translated</param> | ||
| /// <param name="objectType">The output type to be populated</param> | ||
| /// <param name="existingValue">Not used</param> | ||
| /// <param name="serializer">Generates output objects from tokens</param> | ||
| /// <returns>Dictionary of type matching the property where this converter was used, containing game-specific keys and values</returns> | ||
| public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer) | ||
| { | ||
| var token = JToken.Load(reader); | ||
| if (token.Type == JTokenType.Object) | ||
| { | ||
| return token.ToObject(objectType); | ||
| } | ||
| var valueType = objectType.GetGenericArguments()[1]; | ||
| var obj = (IDictionary)Activator.CreateInstance(objectType); | ||
| if (!IsTokenEmpty(token)) | ||
| { | ||
| foreach (var gameName in GameInstanceManager.AllGameShortNames()) | ||
| { | ||
| // Make a new copy of the value for each game | ||
| obj.Add(gameName, token.ToObject(valueType)); | ||
| } | ||
| } | ||
| return obj; | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// We don't want to make any changes during serialization | ||
| /// </summary> | ||
| public override bool CanWrite => false; | ||
|
|
||
| /// <summary> | ||
| /// We don't want to make any changes during serialization | ||
| /// </summary> | ||
| /// <param name="writer">The object writing JSON to disk</param> | ||
| /// <param name="value">A value to be written for this class</param> | ||
| /// <param name="serializer">Generates output objects from tokens</param> | ||
| public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer) | ||
| { | ||
| throw new NotImplementedException(); | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// We *only* want to be triggered for types that have explicitly | ||
| /// set an attribute in their class saying they can be converted. | ||
| /// By returning false here, we declare we're not interested in participating | ||
| /// in any other conversions. | ||
| /// </summary> | ||
| /// <returns> | ||
| /// false | ||
| /// </returns> | ||
| public override bool CanConvert(Type object_type) => false; | ||
|
|
||
| private static bool IsTokenEmpty(JToken token) | ||
| => token.Type == JTokenType.Null | ||
| || (token.Type == JTokenType.Array && !token.HasValues); | ||
| } | ||
| } |
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