Created
June 27, 2018 21:09
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C# JSON Formatter
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| class JsonHelper | |
| { | |
| private const string INDENT_STRING = " "; | |
| public static string FormatJson(string str) | |
| { | |
| var indent = 0; | |
| var quoted = false; | |
| var sb = new StringBuilder(); | |
| for (var i = 0; i < str.Length; i++) | |
| { | |
| var ch = str[i]; | |
| switch (ch) | |
| { | |
| case '{': | |
| case '[': | |
| sb.Append(ch); | |
| if (!quoted) | |
| { | |
| sb.AppendLine(); | |
| Enumerable.Range(0, ++indent).ForEach(item => sb.Append(INDENT_STRING)); | |
| } | |
| break; | |
| case '}': | |
| case ']': | |
| if (!quoted) | |
| { | |
| sb.AppendLine(); | |
| Enumerable.Range(0, --indent).ForEach(item => sb.Append(INDENT_STRING)); | |
| } | |
| sb.Append(ch); | |
| break; | |
| case '"': | |
| sb.Append(ch); | |
| bool escaped = false; | |
| var index = i; | |
| while (index > 0 && str[--index] == '\\') | |
| escaped = !escaped; | |
| if (!escaped) | |
| quoted = !quoted; | |
| break; | |
| case ',': | |
| sb.Append(ch); | |
| if (!quoted) | |
| { | |
| sb.AppendLine(); | |
| Enumerable.Range(0, indent).ForEach(item => sb.Append(INDENT_STRING)); | |
| } | |
| break; | |
| case ':': | |
| sb.Append(ch); | |
| if (!quoted) | |
| sb.Append(" "); | |
| break; | |
| default: | |
| sb.Append(ch); | |
| break; | |
| } | |
| } | |
| return sb.ToString(); | |
| } | |
| } | |
| static class Extensions | |
| { | |
| public static void ForEach<T>(this IEnumerable<T> ie, Action<T> action) | |
| { | |
| foreach (var i in ie) | |
| { | |
| action(i); | |
| } | |
| } | |
| } |
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