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jellyfin/Emby.Server.Implementations/Serialization/JsonSerializer.cs

270 lines
8.3 KiB

using System;
using System.IO;
using System.Threading.Tasks;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Serialization;
using Microsoft.Extensions.Logging;
namespace Emby.Common.Implementations.Serialization
{
/// <summary>
/// Provides a wrapper around third party json serialization.
/// </summary>
public class JsonSerializer : IJsonSerializer
{
private readonly IFileSystem _fileSystem;
public JsonSerializer(
IFileSystem fileSystem)
{
_fileSystem = fileSystem;
Configure();
}
/// <summary>
/// Serializes to stream.
/// </summary>
/// <param name="obj">The obj.</param>
/// <param name="stream">The stream.</param>
/// <exception cref="ArgumentNullException">obj</exception>
public void SerializeToStream(object obj, Stream stream)
{
if (obj == null)
{
throw new ArgumentNullException(nameof(obj));
}
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
ServiceStack.Text.JsonSerializer.SerializeToStream(obj, obj.GetType(), stream);
}
/// <summary>
/// Serializes to file.
/// </summary>
/// <param name="obj">The obj.</param>
/// <param name="file">The file.</param>
/// <exception cref="ArgumentNullException">obj</exception>
public void SerializeToFile(object obj, string file)
{
if (obj == null)
{
throw new ArgumentNullException(nameof(obj));
}
if (string.IsNullOrEmpty(file))
{
throw new ArgumentNullException(nameof(file));
}
using (var stream = _fileSystem.GetFileStream(file, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read))
{
SerializeToStream(obj, stream);
}
}
private static Stream OpenFile(string path)
{
return new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, 131072);
}
/// <summary>
/// Deserializes from file.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="file">The file.</param>
/// <returns>System.Object.</returns>
/// <exception cref="ArgumentNullException">type</exception>
public object DeserializeFromFile(Type type, string file)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
if (string.IsNullOrEmpty(file))
{
throw new ArgumentNullException(nameof(file));
}
using (var stream = OpenFile(file))
{
return DeserializeFromStream(stream, type);
}
}
/// <summary>
/// Deserializes from file.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="file">The file.</param>
/// <returns>``0.</returns>
/// <exception cref="ArgumentNullException">file</exception>
public T DeserializeFromFile<T>(string file)
where T : class
{
if (string.IsNullOrEmpty(file))
{
throw new ArgumentNullException(nameof(file));
}
using (var stream = OpenFile(file))
{
return DeserializeFromStream<T>(stream);
}
}
/// <summary>
/// Deserializes from stream.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="stream">The stream.</param>
/// <returns>``0.</returns>
/// <exception cref="ArgumentNullException">stream</exception>
public T DeserializeFromStream<T>(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
return ServiceStack.Text.JsonSerializer.DeserializeFromStream<T>(stream);
}
public Task<T> DeserializeFromStreamAsync<T>(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
return ServiceStack.Text.JsonSerializer.DeserializeFromStreamAsync<T>(stream);
}
/// <summary>
/// Deserializes from string.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="text">The text.</param>
/// <returns>``0.</returns>
/// <exception cref="ArgumentNullException">text</exception>
public T DeserializeFromString<T>(string text)
{
if (string.IsNullOrEmpty(text))
{
throw new ArgumentNullException(nameof(text));
}
return ServiceStack.Text.JsonSerializer.DeserializeFromString<T>(text);
}
/// <summary>
/// Deserializes from stream.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="type">The type.</param>
/// <returns>System.Object.</returns>
/// <exception cref="ArgumentNullException">stream</exception>
public object DeserializeFromStream(Stream stream, Type type)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
return ServiceStack.Text.JsonSerializer.DeserializeFromStream(type, stream);
}
public async Task<object> DeserializeFromStreamAsync(Stream stream, Type type)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
using (var reader = new StreamReader(stream))
{
var json = await reader.ReadToEndAsync().ConfigureAwait(false);
return ServiceStack.Text.JsonSerializer.DeserializeFromString(json, type);
}
}
/// <summary>
/// Configures this instance.
/// </summary>
private void Configure()
{
ServiceStack.Text.JsConfig.DateHandler = ServiceStack.Text.DateHandler.ISO8601;
ServiceStack.Text.JsConfig.ExcludeTypeInfo = true;
ServiceStack.Text.JsConfig.IncludeNullValues = false;
ServiceStack.Text.JsConfig.AlwaysUseUtc = true;
ServiceStack.Text.JsConfig.AssumeUtc = true;
ServiceStack.Text.JsConfig<Guid>.SerializeFn = SerializeGuid;
}
private static string SerializeGuid(Guid guid)
{
if (guid.Equals(Guid.Empty))
{
return null;
}
return guid.ToString("N");
}
/// <summary>
/// Deserializes from string.
/// </summary>
/// <param name="json">The json.</param>
/// <param name="type">The type.</param>
/// <returns>System.Object.</returns>
/// <exception cref="ArgumentNullException">json</exception>
public object DeserializeFromString(string json, Type type)
{
if (string.IsNullOrEmpty(json))
{
throw new ArgumentNullException(nameof(json));
}
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
return ServiceStack.Text.JsonSerializer.DeserializeFromString(json, type);
}
/// <summary>
/// Serializes to string.
/// </summary>
/// <param name="obj">The obj.</param>
/// <returns>System.String.</returns>
/// <exception cref="ArgumentNullException">obj</exception>
public string SerializeToString(object obj)
{
if (obj == null)
{
throw new ArgumentNullException(nameof(obj));
}
return ServiceStack.Text.JsonSerializer.SerializeToString(obj, obj.GetType());
}
}
}