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src/Serval.Translation/Utils/DictionaryJsonConverter.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| using Newtonsoft.Json; | ||
| using Newtonsoft.Json.Linq; | ||
|
|
||
| namespace Serval.Translation.Utils; | ||
|
|
||
| // Credit to anish-patel post in https://stackoverflow.com/questions/11561597/deserialize-json-recursively-to-idictionarystring-object | ||
| public class DictionaryJsonConverter : JsonConverter | ||
| { | ||
| public override void WriteJson(JsonWriter writer, object? value, Newtonsoft.Json.JsonSerializer serializer) | ||
| { | ||
| WriteValue(writer, value); | ||
| } | ||
|
|
||
| private void WriteValue(JsonWriter writer, object? value) | ||
| { | ||
| if (value is null) | ||
| { | ||
| writer.WriteNull(); | ||
| return; | ||
| } | ||
| var t = JToken.FromObject(value); | ||
| switch (t.Type) | ||
| { | ||
| case JTokenType.Object: | ||
| WriteObject(writer, value); | ||
| break; | ||
| case JTokenType.Array: | ||
| WriteArray(writer, value); | ||
| break; | ||
| default: | ||
| writer.WriteValue(value); | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| private void WriteObject(JsonWriter writer, object value) | ||
| { | ||
| writer.WriteStartObject(); | ||
| var obj = | ||
| value as IDictionary<string, object> | ||
| ?? throw new JsonSerializationException("Object must implement IDictionary<string, object>"); | ||
| foreach (var kvp in obj) | ||
| { | ||
| writer.WritePropertyName(kvp.Key); | ||
| WriteValue(writer, kvp.Value); | ||
| } | ||
| writer.WriteEndObject(); | ||
| } | ||
|
|
||
| private void WriteArray(JsonWriter writer, object value) | ||
| { | ||
| writer.WriteStartArray(); | ||
| var array = | ||
| value as IEnumerable<object> | ||
| ?? throw new JsonSerializationException( | ||
| "Unexpected type when converting IDictionary<string, object> to Array." | ||
| ); | ||
| foreach (var o in array) | ||
| { | ||
| WriteValue(writer, o); | ||
| } | ||
| writer.WriteEndArray(); | ||
| } | ||
|
|
||
| public override object ReadJson( | ||
| JsonReader reader, | ||
| Type objectType, | ||
| object? existingValue, | ||
| Newtonsoft.Json.JsonSerializer serializer | ||
| ) | ||
| { | ||
| return ReadValue(reader); | ||
| } | ||
|
|
||
| private object ReadValue(JsonReader reader) | ||
| { | ||
| while (reader.TokenType == JsonToken.Comment) | ||
| { | ||
| if (!reader.Read()) | ||
| throw new JsonSerializationException("Unexpected Token when converting IDictionary<string, object>"); | ||
| } | ||
|
|
||
| return reader.TokenType switch | ||
| { | ||
| JsonToken.StartObject => ReadObject(reader), | ||
| JsonToken.StartArray => ReadArray(reader), | ||
| JsonToken.Integer | ||
| or JsonToken.Float | ||
| or JsonToken.String | ||
| or JsonToken.Boolean | ||
| or JsonToken.Undefined | ||
| or JsonToken.Null | ||
| or JsonToken.Date | ||
| or JsonToken.Bytes | ||
| => reader.Value | ||
| ?? throw new JsonSerializationException( | ||
| "Unexpected token when converting to " + reader.TokenType.ToString() | ||
| ), | ||
| _ | ||
| => throw new JsonSerializationException( | ||
| string.Format("Unexpected token when converting IDictionary<string, object>: {0}", reader.TokenType) | ||
| ), | ||
| }; | ||
| } | ||
|
|
||
| private object ReadArray(JsonReader reader) | ||
| { | ||
| IList<object> list = []; | ||
|
|
||
| while (reader.Read()) | ||
| { | ||
| switch (reader.TokenType) | ||
| { | ||
| case JsonToken.Comment: | ||
| break; | ||
| default: | ||
| var v = ReadValue(reader); | ||
|
|
||
| list.Add(v); | ||
| break; | ||
| case JsonToken.EndArray: | ||
| return list; | ||
| } | ||
| } | ||
|
|
||
| throw new JsonSerializationException("Unexpected end when reading IDictionary<string, object>"); | ||
| } | ||
|
|
||
| private object ReadObject(JsonReader reader) | ||
| { | ||
| var obj = new Dictionary<string, object>(); | ||
|
|
||
| while (reader.Read()) | ||
| { | ||
| switch (reader.TokenType) | ||
| { | ||
| case JsonToken.PropertyName: | ||
| var propertyName = | ||
| reader.Value!.ToString() | ||
| ?? throw new JsonSerializationException( | ||
| "Unexpected Token when converting IDictionary<string, object>" | ||
| ); | ||
|
|
||
| if (!reader.Read()) | ||
| { | ||
| throw new JsonSerializationException("Unexpected end when reading IDictionary<string, object>"); | ||
| } | ||
|
|
||
| var v = ReadValue(reader); | ||
|
|
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| obj[propertyName] = v; | ||
| break; | ||
| case JsonToken.Comment: | ||
| break; | ||
| case JsonToken.EndObject: | ||
| return obj; | ||
| } | ||
| } | ||
|
|
||
| throw new JsonSerializationException("Unexpected end when reading IDictionary<string, object>"); | ||
| } | ||
|
|
||
| public override bool CanConvert(Type objectType) | ||
| { | ||
| return typeof(IDictionary<string, object>).IsAssignableFrom(objectType); | ||
| } | ||
| } |
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