81 lines
2.6 KiB
C#
81 lines
2.6 KiB
C#
using Newtonsoft.Json;
|
|
|
|
namespace Pilz.Json;
|
|
|
|
public class AppVersionStringJsonConverter(bool serializeAsObject) : JsonConverter
|
|
{
|
|
public AppVersionStringJsonConverter() : this(false)
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Writes the JSON representation of the object.
|
|
/// </summary>
|
|
/// <param name="writer">The <see cref="JsonWriter"/> to write to.</param>
|
|
/// <param name="value">The value.</param>
|
|
/// <param name="serializer">The calling serializer.</param>
|
|
public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
|
|
{
|
|
if (value == null)
|
|
{
|
|
writer.WriteNull();
|
|
return;
|
|
}
|
|
|
|
if (serializeAsObject || value is not AppVersion appVersion)
|
|
writer.WriteValue(value);
|
|
else
|
|
writer.WriteValue(appVersion.ToString());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Reads the JSON representation of the object.
|
|
/// </summary>
|
|
/// <param name="reader">The <see cref="JsonReader"/> to read from.</param>
|
|
/// <param name="objectType">Type of the object.</param>
|
|
/// <param name="existingValue">The existing value of object being read.</param>
|
|
/// <param name="serializer">The calling serializer.</param>
|
|
/// <returns>The object value.</returns>
|
|
public override object? ReadJson(JsonReader reader, Type objectType, object? existingValue, JsonSerializer serializer)
|
|
{
|
|
if (reader.TokenType == JsonToken.Null)
|
|
return null;
|
|
|
|
try
|
|
{
|
|
if (reader.TokenType == JsonToken.String)
|
|
{
|
|
var strValue = reader.Value?.ToString();
|
|
|
|
if (string.IsNullOrWhiteSpace(strValue))
|
|
return null;
|
|
|
|
return AppVersion.Parse(strValue);
|
|
|
|
}
|
|
|
|
if (reader.TokenType == JsonToken.StartObject)
|
|
return serializer.Deserialize<AppVersion>(reader);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
throw new JsonSerializationException("Error converting value {0} to type '{1}'.", ex);
|
|
}
|
|
|
|
// we don't actually expect to get here.
|
|
throw new JsonSerializationException("Unexpected token {0} when parsing app version.");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Determines whether this instance can convert the specified object type.
|
|
/// </summary>
|
|
/// <param name="objectType">Type of the object.</param>
|
|
/// <returns>
|
|
/// <c>true</c> if this instance can convert the specified object type; otherwise, <c>false</c>.
|
|
/// </returns>
|
|
public override bool CanConvert(Type objectType)
|
|
{
|
|
return objectType == typeof(AppVersion);
|
|
}
|
|
}
|