using System; using System.ComponentModel; using System.Text.Json; using System.Text.Json.Serialization; namespace MediaBrowser.Common.Json.Converters { /// /// Convert comma delimited string to array of type. /// /// Type to convert to. public class JsonCommaDelimitedArrayConverter : JsonConverter { private readonly TypeConverter _typeConverter; /// /// Initializes a new instance of the class. /// public JsonCommaDelimitedArrayConverter() { _typeConverter = TypeDescriptor.GetConverter(typeof(T)); } /// public override T[] Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) { if (reader.TokenType == JsonTokenType.String) { var stringEntries = reader.GetString()?.Split(',', StringSplitOptions.RemoveEmptyEntries); if (stringEntries == null || stringEntries.Length == 0) { return Array.Empty(); } var parsedValues = new object[stringEntries.Length]; var convertedCount = 0; for (var i = 0; i < stringEntries.Length; i++) { try { parsedValues[i] = _typeConverter.ConvertFrom(stringEntries[i].Trim()); convertedCount++; } catch (FormatException) { // TODO log when upgraded to .Net6 // https://github.com/dotnet/runtime/issues/42975 // _logger.LogDebug(e, "Error converting value."); } } var typedValues = new T[convertedCount]; var typedValueIndex = 0; for (var i = 0; i < stringEntries.Length; i++) { if (parsedValues[i] != null) { typedValues.SetValue(parsedValues[i], typedValueIndex); typedValueIndex++; } } return typedValues; } return JsonSerializer.Deserialize(ref reader, options); } /// public override void Write(Utf8JsonWriter writer, T[] value, JsonSerializerOptions options) { JsonSerializer.Serialize(writer, value, options); } } }