using System;

using System.IO;

using YamlDotNet.Core;

using YamlDotNet.Core.Events;

using YamlDotNet.RepresentationModel;

public class Program

{

    public static void Main()

    {

        var json = "{\"swagger\":\"2.0\",\"info\":{\"title\":\"UberAPI\",\"description\":\"MoveyourappforwardwiththeUberAPI\",\"version\":\"1.0.0\"},\"host\":\"api.uber.com\",\"schemes\":[\"https\"],\"basePath\":\"/v1\",\"produces\":[\"application/json\"]}";

        var yaml = new YamlStream();

        yaml.Load(new StringReader(json));

        yaml.Accept(new JsonToYamlConverterVisitor());

        var outputYaml = new StringWriter();

        yaml.Save(outputYaml, false);

        outputYaml.Flush();

        var yamlString = outputYaml.ToString();

        Console.WriteLine(yamlString);

    }

​

    class JsonToYamlConverterVisitor : YamlVisitorBase

    {

        public override void Visit(YamlScalarNode scalar)

        {

​

            if (scalar.Style == ScalarStyle.DoubleQuoted && (scalar.Value == "null" || scalar.Value == "true" || scalar.Value == "false"))

                scalar.Style = ScalarStyle.DoubleQuoted;

            else scalar.Style = ScalarStyle.Plain;

            base.Visit(scalar);

        }

​

        public override void Visit(YamlSequenceNode sequence)

        {

            sequence.Style = SequenceStyle.Block;

            base.Visit(sequence);

        }

​

        public override void Visit(YamlMappingNode mapping)

        {

            mapping.Style = MappingStyle.Block;

            base.Visit(mapping);

        }

    }

}