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Copy pathJSON.cs
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192 lines (179 loc) · 6.39 KB
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using System;
using System.Collections.Generic;
using System.Globalization;
namespace HGSDK
{
public static class JSON
{
private static void Add(JSONData current, string key, string value, bool isString)
{
if (current == null) return;
var item = JSONValue.Parse(value, isString);
if (current is JSONArray)
{
if (value != "")
{
current.Add(item);
}
}
else if (key != "")
{
current.Add(key, item);
}
}
public static JSONData Parse(string json)
{
var stack = new Stack<JSONData>();
JSONData current = null;
var i = 0;
var value = "";
var key = "";
var quoteMode = false;
var valueIsString = false;
while (i < json.Length)
{
switch (json[i])
{
case '{':
if (quoteMode)
{
value += json[i];
break;
}
stack.Push(new JSONObject());
if (current != null)
{
key = key.Trim();
if (current is JSONArray)
current.Add(stack.Peek());
else if (key != "")
current.Add(key, stack.Peek());
}
key = "";
value = "";
current = stack.Peek();
break;
case '[':
if (quoteMode)
{
value += json[i];
break;
}
stack.Push(new JSONArray());
if (current != null)
{
key = key.Trim();
if (current is JSONArray)
{
current.Add(stack.Peek());
}
else if (key != "")
{
current.Add(key, stack.Peek());
}
}
key = "";
value = "";
current = stack.Peek();
break;
case '}':
case ']':
if (quoteMode)
{
value += json[i];
break;
}
if (stack.Count == 0)
throw new Exception("JSON Parse: Too many closing brackets");
stack.Pop();
Add(current, key.Trim(), value, valueIsString);
valueIsString = false;
key = "";
value = "";
if (stack.Count > 0)
{
current = stack.Peek();
}
break;
case ':':
if (quoteMode)
{
value += json[i];
break;
}
key = value;
value = "";
valueIsString = false;
break;
case '"':
quoteMode ^= true;
valueIsString = quoteMode == true ? true : valueIsString;
break;
case ',':
if (quoteMode)
{
value += json[i];
break;
}
Add(current, key.Trim(), value, valueIsString);
valueIsString = false;
key = "";
value = "";
break;
case '\r':
case '\n':
break;
case ' ':
case '\t':
if (quoteMode)
value += json[i];
break;
case '\\':
++i;
if (quoteMode)
{
var C = json[i];
switch (C)
{
case 't':
value += '\t';
break;
case 'r':
value += '\r';
break;
case 'n':
value += '\n';
break;
case 'b':
value += '\b';
break;
case 'f':
value += '\f';
break;
case 'u':
{
var s = json.Substring(i + 1, 4);
value += (char) int.Parse(s, NumberStyles.AllowHexSpecifier);
i += 4;
break;
}
default:
value += C;
break;
}
}
break;
default:
value += json[i];
break;
}
++i;
}
if (quoteMode)
{
throw new Exception("JSON Parse: Quotation marks seems to be messed up.");
}
return current;
}
}
}