JsonFormatter

gistfile1.txt

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Json;
using System.Text;

    public static class SerializationExtensions
    {
        public static string ToJson<T>(this T obj)
        {
            using (var ms = new MemoryStream())
            {
                var dc = new DataContractJsonSerializer(typeof(T));
                dc.WriteObject(ms, obj);
                string val = Encoding.UTF8.GetString(ms.ToArray());
                return JsonHelper.Format(val);
                //return val;
            }
        }

        public static T FromJson<T>(this string json)
        {
            using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(json)))
            {
                var dc = new DataContractJsonSerializer(typeof(T));
                return (T)dc.ReadObject(ms);
            }
        }

        public static void ForEach<T>(this IEnumerable<T> items, Action<T> doSomething)
        {
            foreach (var item in items)
                doSomething(item);
        }
    }

    public class JsonHelper
    {
        private const string _indentString = "    ";

        public static string Format(string str)
        {
            var indent = 0;
            var sb = new StringBuilder();
            foreach (var ch in str)
            {
                switch (ch)
                {
                    case ':':
                        sb.Append(' ').Append(ch).Append(' ');
                        break;
                    case '[':
                        sb.Append(ch);
                        indent++;
                        break;
                    case ']':
                        sb.Append(ch);
                        indent--;
                        break;
                    case '|':
                        sb.AppendLine();
                        Enumerable.Range(0, indent + 1).ForEach(item => sb.Append(_indentString));
                        sb.Append(ch);
                        break;
                    case ',':
                        sb.Append(ch);
                        sb.AppendLine();
                        Enumerable.Range(0, indent).ForEach(item => sb.Append(_indentString));
                        break;
                    case '{':
                        sb.AppendLine();
                        Enumerable.Range(0, indent).ForEach(item => sb.Append(_indentString));
                        sb.Append(ch);
                        sb.AppendLine();
                        Enumerable.Range(0, ++indent).ForEach(item => sb.Append(_indentString));
                        break;
                    case '}':
                        sb.AppendLine();
                        Enumerable.Range(0, --indent).ForEach(item => sb.Append(_indentString));
                        sb.Append(ch);
                        break;
                    default:
                        sb.Append(ch);
                        break;
                }
            }
            return sb.ToString();
        }

    }