lib_unity_purchase/Runtime/Common/MiniJSON.cs

835 lines
30 KiB
C#

/*
* Copyright (c) 2013 Calvin Rien
*
* Based on the JSON parser by Patrick van Bergen
* http://techblog.procurios.nl/k/618/news/view/14605/14863/How-do-I-write-my-own-parser-for-JSON.html
*
* Simplified it so that it doesn't throw exceptions
* and can be used in Unity iPhone with maximum code stripping.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
namespace UnityEngine.Purchasing
{
namespace MiniJSON
{
// Example usage:
//
// using UnityEngine;
// using System.Collections;
// using System.Collections.Generic;
// using MiniJSON;
//
// public class MiniJSONTest : MonoBehaviour {
// void Start () {
// var jsonString = "{ \"array\": [1.44,2,3], " +
// "\"object\": {\"key1\":\"value1\", \"key2\":256}, " +
// "\"string\": \"The quick brown fox \\\"jumps\\\" over the lazy dog \", " +
// "\"unicode\": \"\\u3041 Men\u00fa sesi\u00f3n\", " +
// "\"int\": 65536, " +
// "\"float\": 3.1415926, " +
// "\"bool\": true, " +
// "\"null\": null }";
//
// var dict = Json.Deserialize(jsonString) as Dictionary<string,object>;
//
// Debug.Log("deserialized: " + dict.GetType());
// Debug.Log("dict['array'][0]: " + ((List<object>) dict["array"])[0]);
// Debug.Log("dict['string']: " + (string) dict["string"]);
// Debug.Log("dict['float']: " + (double) dict["float"]); // floats come out as doubles
// Debug.Log("dict['int']: " + (long) dict["int"]); // ints come out as longs
// Debug.Log("dict['unicode']: " + (string) dict["unicode"]);
//
// var str = Json.Serialize(dict);
//
// Debug.Log("serialized: " + str);
// }
// }
/// <summary>
/// This class encodes and decodes JSON strings.
/// Spec. details, see http://www.json.org/
///
/// JSON uses Arrays and Objects. These correspond here to the datatypes IList and IDictionary.
/// All numbers are parsed to doubles.
/// </summary>
public static class Json
{
/// <summary>
/// Parses the string json into a value
/// </summary>
/// <param name="json">A JSON string.</param>
/// <returns>An List&lt;object&gt;, a Dictionary&lt;string, object&gt;, a double, an integer,a string, null, true, or false</returns>
public static object Deserialize(string json)
{
// save the string for debug information
if (json == null)
{
return null;
}
return Parser.Parse(json);
}
sealed class Parser : IDisposable
{
const string WORD_BREAK = "{}[],:\"";
public static bool IsWordBreak(char c)
{
return Char.IsWhiteSpace(c) || WORD_BREAK.IndexOf(c) != -1;
}
enum TOKEN
{
NONE,
CURLY_OPEN,
CURLY_CLOSE,
SQUARED_OPEN,
SQUARED_CLOSE,
COLON,
COMMA,
STRING,
NUMBER,
TRUE,
FALSE,
NULL
};
StringReader json;
Parser(string jsonString)
{
json = new StringReader(jsonString);
}
public static object Parse(string jsonString)
{
using (var instance = new Parser(jsonString))
{
return instance.ParseValue();
}
}
public void Dispose()
{
json.Dispose();
json = null;
}
Dictionary<string, object> ParseObject()
{
var table = new Dictionary<string, object>();
// ditch opening brace
json.Read();
// {
while (true)
{
switch (NextToken)
{
case TOKEN.NONE:
return null;
case TOKEN.COMMA:
continue;
case TOKEN.CURLY_CLOSE:
return table;
default:
// name
var name = ParseString();
if (name == null)
{
return null;
}
// :
if (NextToken != TOKEN.COLON)
{
return null;
}
// ditch the colon
json.Read();
// value
table[name] = ParseValue();
break;
}
}
}
List<object> ParseArray()
{
var array = new List<object>();
// ditch opening bracket
json.Read();
// [
var parsing = true;
while (parsing)
{
var nextToken = NextToken;
switch (nextToken)
{
case TOKEN.NONE:
return null;
case TOKEN.COMMA:
continue;
case TOKEN.SQUARED_CLOSE:
parsing = false;
break;
default:
var value = ParseByToken(nextToken);
array.Add(value);
break;
}
}
return array;
}
object ParseValue()
{
var nextToken = NextToken;
return ParseByToken(nextToken);
}
object ParseByToken(TOKEN token)
{
switch (token)
{
case TOKEN.STRING:
return ParseString();
case TOKEN.NUMBER:
return ParseNumber();
case TOKEN.CURLY_OPEN:
return ParseObject();
case TOKEN.SQUARED_OPEN:
return ParseArray();
case TOKEN.TRUE:
return true;
case TOKEN.FALSE:
return false;
case TOKEN.NULL:
return null;
default:
return null;
}
}
string ParseString()
{
var s = new StringBuilder();
char c;
// ditch opening quote
json.Read();
var parsing = true;
while (parsing)
{
if (json.Peek() == -1)
{
break;
}
c = NextChar;
switch (c)
{
case '"':
parsing = false;
break;
case '\\':
if (json.Peek() == -1)
{
parsing = false;
break;
}
c = NextChar;
switch (c)
{
case '"':
case '\\':
case '/':
s.Append(c);
break;
case 'b':
s.Append('\b');
break;
case 'f':
s.Append('\f');
break;
case 'n':
s.Append('\n');
break;
case 'r':
s.Append('\r');
break;
case 't':
s.Append('\t');
break;
case 'u':
var hex = new char[4];
for (var i = 0; i < 4; i++)
{
hex[i] = NextChar;
}
s.Append((char)Convert.ToInt32(new string(hex), 16));
break;
}
break;
default:
s.Append(c);
break;
}
}
return s.ToString();
}
object ParseNumber()
{
var number = NextWord;
if (number.IndexOf('.') == -1 && number.IndexOf('e') == -1 && number.IndexOf('E') == -1)
{
Int64.TryParse(number, NumberStyles.Any, CultureInfo.InvariantCulture, out var parsedInt);
return parsedInt;
}
Double.TryParse(number, NumberStyles.Any, CultureInfo.InvariantCulture, out var parsedDouble);
return parsedDouble;
}
void EatWhitespace()
{
while (Char.IsWhiteSpace(PeekChar))
{
json.Read();
if (json.Peek() == -1)
{
break;
}
}
}
char PeekChar => Convert.ToChar(json.Peek());
char NextChar => Convert.ToChar(json.Read());
string NextWord
{
get
{
var word = new StringBuilder();
while (!IsWordBreak(PeekChar))
{
word.Append(NextChar);
if (json.Peek() == -1)
{
break;
}
}
return word.ToString();
}
}
TOKEN NextToken
{
get
{
EatWhitespace();
if (json.Peek() == -1)
{
return TOKEN.NONE;
}
switch (PeekChar)
{
case '{':
return TOKEN.CURLY_OPEN;
case '}':
json.Read();
return TOKEN.CURLY_CLOSE;
case '[':
return TOKEN.SQUARED_OPEN;
case ']':
json.Read();
return TOKEN.SQUARED_CLOSE;
case ',':
json.Read();
return TOKEN.COMMA;
case '"':
return TOKEN.STRING;
case ':':
return TOKEN.COLON;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
case '-':
return TOKEN.NUMBER;
}
switch (NextWord)
{
case "false":
return TOKEN.FALSE;
case "true":
return TOKEN.TRUE;
case "null":
return TOKEN.NULL;
}
return TOKEN.NONE;
}
}
}
/// <summary>
/// Converts a IDictionary / IList object or a simple type (string, int, etc.) into a JSON string
/// </summary>
/// <param name="obj">A Dictionary&lt;string, object&gt; / List&lt;object&gt;</param>
/// <returns>A JSON encoded string, or null if object 'json' is not serializable</returns>
public static string Serialize(object obj)
{
return Serializer.Serialize(obj);
}
sealed class Serializer
{
readonly StringBuilder builder;
Serializer()
{
builder = new StringBuilder();
}
public static string Serialize(object obj)
{
var instance = new Serializer();
instance.SerializeValue(obj);
return instance.builder.ToString();
}
void SerializeValue(object value)
{
IList asList;
IDictionary asDict;
string asStr;
if (value == null)
{
builder.Append("null");
}
else if ((asStr = value as string) != null)
{
SerializeString(asStr);
}
else if (value is bool)
{
builder.Append((bool)value ? "true" : "false");
}
else if ((asList = value as IList) != null)
{
SerializeArray(asList);
}
else if ((asDict = value as IDictionary) != null)
{
SerializeObject(asDict);
}
else if (value is char)
{
SerializeString(new string((char)value, 1));
}
else
{
SerializeOther(value);
}
}
void SerializeObject(IDictionary obj)
{
var first = true;
builder.Append('{');
foreach (var e in obj.Keys)
{
if (!first)
{
builder.Append(',');
}
SerializeString(e.ToString());
builder.Append(':');
SerializeValue(obj[e]);
first = false;
}
builder.Append('}');
}
void SerializeArray(IList anArray)
{
builder.Append('[');
var first = true;
foreach (var obj in anArray)
{
if (!first)
{
builder.Append(',');
}
SerializeValue(obj);
first = false;
}
builder.Append(']');
}
void SerializeString(string str)
{
builder.Append('\"');
var charArray = str.ToCharArray();
foreach (var c in charArray)
{
switch (c)
{
case '"':
builder.Append("\\\"");
break;
case '\\':
builder.Append("\\\\");
break;
case '\b':
builder.Append("\\b");
break;
case '\f':
builder.Append("\\f");
break;
case '\n':
builder.Append("\\n");
break;
case '\r':
builder.Append("\\r");
break;
case '\t':
builder.Append("\\t");
break;
default:
var codepoint = Convert.ToInt32(c);
if ((codepoint >= 32) && (codepoint <= 126))
{
builder.Append(c);
}
else
{
builder.Append("\\u");
builder.Append(codepoint.ToString("x4"));
}
break;
}
}
builder.Append('\"');
}
void SerializeOther(object value)
{
// Ensure we serialize Numbers using decimal (.) characters; avoid using comma (,) for
// decimal separator. Use CultureInfo.InvariantCulture.
// NOTE: decimals lose precision during serialization.
// They always have, I'm just letting you know.
// Previously floats and doubles lost precision too.
if (value is float)
{
builder.Append(((float)value).ToString("R", CultureInfo.InvariantCulture));
}
else if (value is int
|| value is uint
|| value is long
|| value is sbyte
|| value is byte
|| value is short
|| value is ushort
|| value is ulong)
{
builder.Append(value);
}
else if (value is double
|| value is decimal)
{
builder.Append(Convert.ToDouble(value).ToString("R", CultureInfo.InvariantCulture));
}
else
{
SerializeString(value.ToString());
}
}
}
}
// By Unity
#region Extension methods
/// <summary>
/// Extension class for MiniJson to access values in JSON format.
/// </summary>
public static class MiniJsonExtensions
{
/// <summary>
/// Get the HashDictionary of a key in JSON dictionary.
/// </summary>
/// <param name="dic">The JSON in dictionary representations.</param>
/// <param name="key">The Key to get the HashDictionary from in the JSON dictionary.</param>
/// <returns>The HashDictionary found in the JSON</returns>
public static Dictionary<string, object> GetHash(this Dictionary<string, object> dic, string key)
{
return (Dictionary<string, object>)dic[key];
}
/// <summary>
/// Get the casted enum in the JSON dictionary.
/// </summary>
/// <param name="dic">The JSON in dictionary representations.</param>
/// <param name="key">The Key to get the casted enum from in the JSON dictionary.</param>
/// <typeparam name="T">The class to cast the enum.</typeparam>
/// <returns>The casted enum or will return T if the key was not found in the JSON dictionary.</returns>
public static T GetEnum<T>(this Dictionary<string, object> dic, string key)
{
if (dic.ContainsKey(key))
{
return (T)Enum.Parse(typeof(T), dic[key].ToString(), true);
}
return default;
}
/// <summary>
/// Get the string in the JSON dictionary.
/// </summary>
/// <param name="dic">The JSON in dictionary representations.</param>
/// <param name="key">The Key to get the string from in the JSON dictionary.</param>
/// <param name="defaultValue">The default value to send back if the JSON dictionary doesn't contains the key.</param>
/// <returns>The string from the JSON dictionary or the default value if there is none</returns>
public static string GetString(this Dictionary<string, object> dic, string key, string defaultValue = "")
{
if (dic.ContainsKey(key))
{
return dic[key].ToString();
}
return defaultValue;
}
/// <summary>
/// Get the long in the JSON dictionary.
/// </summary>
/// <param name="dic">The JSON in dictionary representations.</param>
/// <param name="key">The Key to get the long from in the JSON dictionary.</param>
/// <returns>The long from the JSON dictionary or 0 if the key was not found in the JSON dictionary</returns>
public static long GetLong(this Dictionary<string, object> dic, string key)
{
if (dic.ContainsKey(key))
{
return long.Parse(dic[key].ToString());
}
return 0;
}
/// <summary>
/// Get the list of strings in the JSON dictionary.
/// </summary>
/// <param name="dic">The JSON in dictionary representations.</param>
/// <param name="key">The Key to get the list of strings from in the JSON dictionary.</param>
/// <returns>The list of strings from the JSON dictionary or an empty list of strings if the key was not found in the JSON dictionary</returns>
public static List<string> GetStringList(this Dictionary<string, object> dic, string key)
{
if (dic.ContainsKey(key))
{
var result = new List<string>();
var objs = (List<object>)dic[key];
foreach (var v in objs)
{
result.Add(v.ToString());
}
return result;
}
return new List<string>();
}
/// <summary>
/// Get the bool in the JSON dictionary.
/// </summary>
/// <param name="dic">The JSON in dictionary representations.</param>
/// <param name="key">The Key to get the bool from in the JSON dictionary.</param>
/// <returns>The bool from the JSON dictionary or false if the key was not found in the JSON dictionary</returns>
public static bool GetBool(this Dictionary<string, object> dic, string key)
{
if (dic.ContainsKey(key))
{
return bool.Parse(dic[key].ToString());
}
return false;
}
/// <summary>
/// Get the casted object in the JSON dictionary.
/// </summary>
/// <param name="dic">The JSON in dictionary representations.</param>
/// <param name="key">The Key to get the casted object from in the JSON dictionary.</param>
/// <typeparam name="T">The class to cast the object.</typeparam>
/// <returns>The casted object or will return T if the key was not found in the JSON dictionary.</returns>
public static T Get<T>(this Dictionary<string, object> dic, string key)
{
if (dic.ContainsKey(key))
{
return (T)dic[key];
}
return default;
}
/// <summary>
/// Convert a Dictionary to JSON.
/// </summary>
/// <param name="obj">The dictionary to convert to JSON.</param>
/// <returns>The converted dictionary in JSON string format.</returns>
public static string toJson(this Dictionary<string, object> obj)
{
return MiniJson.JsonEncode(obj);
}
/// <summary>
/// Convert a Dictionary to JSON.
/// </summary>
/// <param name="obj">The dictionary to convert to JSON.</param>
/// <returns>The converted dictionary in JSON string format.</returns>
public static string toJson(this Dictionary<string, string> obj)
{
return MiniJson.JsonEncode(obj);
}
/// <summary>
/// Convert a string array to JSON.
/// </summary>
/// <param name="array">The string array to convert to JSON.</param>
/// <returns>The converted dictionary in JSON string format.</returns>
public static string toJson(this string[] array)
{
var list = new List<object>();
foreach (var s in array)
{
list.Add(s);
}
return MiniJson.JsonEncode(list);
}
/// <summary>
/// Convert string JSON into List of Objects.
/// </summary>
/// <param name="json">String JSON to convert.</param>
/// <returns>List of Objects converted from string json.</returns>
public static List<object> ArrayListFromJson(this string json)
{
return MiniJson.JsonDecode(json) as List<object>;
}
/// <summary>
/// Convert string JSON into Dictionary.
/// </summary>
/// <param name="json">String JSON to convert.</param>
/// <returns>Dictionary converted from string json.</returns>
public static Dictionary<string, object> HashtableFromJson(this string json)
{
return MiniJson.JsonDecode(json) as Dictionary<string, object>;
}
}
#endregion
}
/// <summary>
/// Extension class for MiniJson to Encode and Decode JSON.
/// </summary>
public class MiniJson
{
/// <summary>
/// Converts an object into a JSON string
/// </summary>
/// <param name="json">Object to convert to JSON string</param>
/// <returns>JSON string</returns>
public static string JsonEncode(object json)
{
return MiniJSON.Json.Serialize(json);
}
/// <summary>
/// Converts an string into a JSON object
/// </summary>
/// <param name="json">String to convert to JSON object</param>
/// <returns>JSON object</returns>
public static object JsonDecode(string json)
{
return MiniJSON.Json.Deserialize(json);
}
}
}