From 37f38526995146c8731af6d3091113bd3e842017 Mon Sep 17 00:00:00 2001 From: crobibero Date: Sun, 11 Oct 2020 17:45:45 -0600 Subject: [PATCH 1/3] Add comma delimited string to array json converter --- .../JsonCommaDelimitedArrayConverter.cs | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs diff --git a/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs b/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs new file mode 100644 index 000000000..4f6a68531 --- /dev/null +++ b/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs @@ -0,0 +1,53 @@ +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(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries); + if (stringEntries == null || stringEntries.Length == 0) + { + return Array.Empty(); + } + + var entries = new T[stringEntries.Length]; + for (var i = 0; i < stringEntries.Length; i++) + { + entries[i] = (T)_typeConverter.ConvertFrom(stringEntries[i]); + } + + return entries; + } + + return JsonSerializer.Deserialize(ref reader, options); + } + + /// + public override void Write(Utf8JsonWriter writer, T[] value, JsonSerializerOptions options) + { + JsonSerializer.Serialize(writer, value, options); + } + } +} \ No newline at end of file From 7565ae22cb91c472928167ac89c39f67324c72e1 Mon Sep 17 00:00:00 2001 From: crobibero Date: Sun, 11 Oct 2020 21:09:15 -0600 Subject: [PATCH 2/3] Add tests and switch to factory --- ...JsonCommaDelimitedArrayConverterFactory.cs | 28 ++++++++ .../Json/JsonCommaDelimitedArrayTests.cs | 65 +++++++++++++++++++ .../Models/GenericBodyModel.cs | 20 ++++++ 3 files changed, 113 insertions(+) create mode 100644 MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverterFactory.cs create mode 100644 tests/Jellyfin.Common.Tests/Json/JsonCommaDelimitedArrayTests.cs create mode 100644 tests/Jellyfin.Common.Tests/Models/GenericBodyModel.cs diff --git a/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverterFactory.cs b/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverterFactory.cs new file mode 100644 index 000000000..b7b1daf76 --- /dev/null +++ b/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverterFactory.cs @@ -0,0 +1,28 @@ +using System; +using System.Text.Json; +using System.Text.Json.Serialization; + +namespace MediaBrowser.Common.Json.Converters +{ + /// + /// Json comma delimited array converter factory. + /// + /// + /// This must be applied as an attribute, adding to the JsonConverter list causes stack overflow. + /// + public class JsonCommaDelimitedArrayConverterFactory : JsonConverterFactory + { + /// + public override bool CanConvert(Type typeToConvert) + { + return true; + } + + /// + public override JsonConverter CreateConverter(Type typeToConvert, JsonSerializerOptions options) + { + var structType = typeToConvert.GetElementType(); + return (JsonConverter)Activator.CreateInstance(typeof(JsonCommaDelimitedArrayConverter<>).MakeGenericType(structType)); + } + } +} \ No newline at end of file diff --git a/tests/Jellyfin.Common.Tests/Json/JsonCommaDelimitedArrayTests.cs b/tests/Jellyfin.Common.Tests/Json/JsonCommaDelimitedArrayTests.cs new file mode 100644 index 000000000..c543cfee9 --- /dev/null +++ b/tests/Jellyfin.Common.Tests/Json/JsonCommaDelimitedArrayTests.cs @@ -0,0 +1,65 @@ +using System.Text.Json; +using System.Text.Json.Serialization; +using Jellyfin.Common.Tests.Models; +using MediaBrowser.Model.Session; +using Xunit; + +namespace Jellyfin.Common.Tests.Json +{ + public static class JsonCommaDelimitedArrayTests + { + [Fact] + public static void Deserialize_String_Valid_Success() + { + var desiredValue = new GenericBodyModel + { + Value = new[] { "a", "b", "c" } + }; + + var options = new JsonSerializerOptions(); + var value = JsonSerializer.Deserialize>(@"{ ""Value"": ""a,b,c"" }", options); + Assert.Equal(desiredValue.Value, value?.Value); + } + + [Fact] + public static void Deserialize_GenericCommandType_Valid_Success() + { + var desiredValue = new GenericBodyModel + { + Value = new[] { GeneralCommandType.MoveUp, GeneralCommandType.MoveDown } + }; + + var options = new JsonSerializerOptions(); + options.Converters.Add(new JsonStringEnumConverter()); + var value = JsonSerializer.Deserialize>(@"{ ""Value"": ""MoveUp,MoveDown"" }", options); + Assert.Equal(desiredValue.Value, value?.Value); + } + + [Fact] + public static void Deserialize_String_Array_Valid_Success() + { + var desiredValue = new GenericBodyModel + { + Value = new[] { "a", "b", "c" } + }; + + var options = new JsonSerializerOptions(); + var value = JsonSerializer.Deserialize>(@"{ ""Value"": [""a"",""b"",""c""] }", options); + Assert.Equal(desiredValue.Value, value?.Value); + } + + [Fact] + public static void Deserialize_GenericCommandType_Array_Valid_Success() + { + var desiredValue = new GenericBodyModel + { + Value = new[] { GeneralCommandType.MoveUp, GeneralCommandType.MoveDown } + }; + + var options = new JsonSerializerOptions(); + options.Converters.Add(new JsonStringEnumConverter()); + var value = JsonSerializer.Deserialize>(@"{ ""Value"": [""MoveUp"", ""MoveDown""] }", options); + Assert.Equal(desiredValue.Value, value?.Value); + } + } +} \ No newline at end of file diff --git a/tests/Jellyfin.Common.Tests/Models/GenericBodyModel.cs b/tests/Jellyfin.Common.Tests/Models/GenericBodyModel.cs new file mode 100644 index 000000000..9a6c382fe --- /dev/null +++ b/tests/Jellyfin.Common.Tests/Models/GenericBodyModel.cs @@ -0,0 +1,20 @@ +using System.Diagnostics.CodeAnalysis; +using System.Text.Json.Serialization; +using MediaBrowser.Common.Json.Converters; + +namespace Jellyfin.Common.Tests.Models +{ + /// + /// The generic body model. + /// + /// The value type. + public class GenericBodyModel + { + /// + /// Gets or sets the value. + /// + [SuppressMessage("Microsoft.Performance", "CA1819:Properties should not return arrays", MessageId = "Value", Justification = "Imported from ServiceStack")] + [JsonConverter(typeof(JsonCommaDelimitedArrayConverterFactory))] + public T[] Value { get; set; } = default!; + } +} \ No newline at end of file From b2662894cf6e7e6b20d12ff22c79ee5159658a2a Mon Sep 17 00:00:00 2001 From: crobibero Date: Fri, 16 Oct 2020 09:37:35 -0600 Subject: [PATCH 3/3] Add whitespace handling and tests --- .../JsonCommaDelimitedArrayConverter.cs | 2 +- .../Json/JsonCommaDelimitedArrayTests.cs | 27 +++++++++++++++++++ 2 files changed, 28 insertions(+), 1 deletion(-) diff --git a/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs b/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs index 4f6a68531..bf7048c37 100644 --- a/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs +++ b/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs @@ -35,7 +35,7 @@ namespace MediaBrowser.Common.Json.Converters var entries = new T[stringEntries.Length]; for (var i = 0; i < stringEntries.Length; i++) { - entries[i] = (T)_typeConverter.ConvertFrom(stringEntries[i]); + entries[i] = (T)_typeConverter.ConvertFrom(stringEntries[i].Trim()); } return entries; diff --git a/tests/Jellyfin.Common.Tests/Json/JsonCommaDelimitedArrayTests.cs b/tests/Jellyfin.Common.Tests/Json/JsonCommaDelimitedArrayTests.cs index c543cfee9..16f8a690e 100644 --- a/tests/Jellyfin.Common.Tests/Json/JsonCommaDelimitedArrayTests.cs +++ b/tests/Jellyfin.Common.Tests/Json/JsonCommaDelimitedArrayTests.cs @@ -21,6 +21,19 @@ namespace Jellyfin.Common.Tests.Json Assert.Equal(desiredValue.Value, value?.Value); } + [Fact] + public static void Deserialize_String_Space_Valid_Success() + { + var desiredValue = new GenericBodyModel + { + Value = new[] { "a", "b", "c" } + }; + + var options = new JsonSerializerOptions(); + var value = JsonSerializer.Deserialize>(@"{ ""Value"": ""a, b, c"" }", options); + Assert.Equal(desiredValue.Value, value?.Value); + } + [Fact] public static void Deserialize_GenericCommandType_Valid_Success() { @@ -35,6 +48,20 @@ namespace Jellyfin.Common.Tests.Json Assert.Equal(desiredValue.Value, value?.Value); } + [Fact] + public static void Deserialize_GenericCommandType_Space_Valid_Success() + { + var desiredValue = new GenericBodyModel + { + Value = new[] { GeneralCommandType.MoveUp, GeneralCommandType.MoveDown } + }; + + var options = new JsonSerializerOptions(); + options.Converters.Add(new JsonStringEnumConverter()); + var value = JsonSerializer.Deserialize>(@"{ ""Value"": ""MoveUp, MoveDown"" }", options); + Assert.Equal(desiredValue.Value, value?.Value); + } + [Fact] public static void Deserialize_String_Array_Valid_Success() {