/// <summary>
/// Converts a Hashtable / ArrayList / Dictionary(string,string) object into a JSON string
/// </summary>
/// <param name="json">A Hashtable / ArrayList</param>
/// <returns>A JSON encoded string, or null if object 'json' is not serializable</returns>
public static string jsonEncode(object json)
{
var builder = new StringBuilder(BUILDER_CAPACITY);
var success = MUJson.serializeValue(json, builder);
return(success ? builder.ToString() : null);
}
public static object jsonDecode(string json)
{
MUJson.lastDecode = json;
object result;
try
{
if (json != null)
{
char[] charArray = json.ToCharArray();
int index = 0;
bool success = true;
object value = MUJson.parseValue(charArray, ref index, ref success);
if (success)
{
MUJson.lastErrorIndex = -1;
}
else
{
MUJson.lastErrorIndex = index;
}
result = value;
}
else
{
result = null;
}
}
catch (Exception)
{
result = null;
}
return(result);
}
/// <summary>
/// Parses the string json into a value
/// </summary>
/// <param name="json">A JSON string.</param>
/// <returns>An ArrayList, a Hashtable, a double, a string, null, true, or false</returns>
public static object jsonDecode(string json)
{
// save the string for debug information
MUJson.lastDecode = json;
try
{
if (json != null)
{
char[] charArray = json.ToCharArray();
int index = 0;
bool success = true;
object value = MUJson.parseValue(charArray, ref index, ref success);
if (success)
{
MUJson.lastErrorIndex = -1;
}
else
{
MUJson.lastErrorIndex = index;
}
return(value);
}
else
{
return(null);
}
}
catch (Exception)
{
//DataHelper.WriteFormatExceptionLog(ex, string.Format("jsonDecode异常：{0}", json), false);
return(null);
}
}
protected static object parseValue(char[] json, ref int index, ref bool success)
{
switch (MUJson.lookAhead(json, index))
{
case 1:
return(MUJson.parseObject(json, ref index));
case 3:
return(MUJson.parseArray(json, ref index));
case 7:
return(MUJson.parseString(json, ref index));
case 8:
return(MUJson.parseNumber(json, ref index));
case 9:
MUJson.nextToken(json, ref index);
return(bool.Parse("TRUE"));
case 10:
MUJson.nextToken(json, ref index);
return(bool.Parse("FALSE"));
case 11:
MUJson.nextToken(json, ref index);
return(null);
}
success = false;
return(null);
}
protected static bool serializeObject(Hashtable anObject, StringBuilder builder)
{
builder.Append("{");
IDictionaryEnumerator e = anObject.GetEnumerator();
bool first = true;
while (e.MoveNext())
{
string key = e.Key.ToString();
object value = e.Value;
if (!first)
{
builder.Append(", ");
}
MUJson.serializeString(key, builder);
builder.Append(":");
if (!MUJson.serializeValue(value, builder))
{
return(false);
}
first = false;
}
builder.Append("}");
return(true);
}
protected static double parseNumber(char[] json, ref int index)
{
MUJson.eatWhitespace(json, ref index);
int lastIndex = MUJson.getLastIndexOfNumber(json, index);
int charLength = lastIndex - index + 1;
char[] numberCharArray = new char[charLength];
Array.Copy(json, index, numberCharArray, 0, charLength);
index = lastIndex + 1;
return(double.Parse(new string(numberCharArray)));
}
protected static bool serializeObjectOrArray(object objectOrArray, StringBuilder builder)
{
bool result;
if (objectOrArray is Hashtable)
{
result = MUJson.serializeObject((Hashtable)objectOrArray, builder);
}
else
{
result = (objectOrArray is ArrayList && MUJson.serializeArray((ArrayList)objectOrArray, builder));
}
return(result);
}
protected static bool serializeValue(object value, StringBuilder builder)
{
if (value == null)
{
builder.Append("null");
}
else if (value.GetType().IsArray)
{
MUJson.serializeArray(new ArrayList((ICollection)value), builder);
}
else if (value is string)
{
MUJson.serializeString((string)value, builder);
}
else if (value is char)
{
MUJson.serializeString(Convert.ToString((char)value), builder);
}
else if (value is Hashtable)
{
MUJson.serializeObject((Hashtable)value, builder);
}
else if (value is Dictionary <string, string> )
{
MUJson.serializeDictionary((Dictionary <string, string>)value, builder);
}
else if (value is ArrayList)
{
MUJson.serializeArray((ArrayList)value, builder);
}
else if (value is bool && (bool)value)
{
builder.Append("true");
}
else if (value is bool && !(bool)value)
{
builder.Append("false");
}
else
{
if (!value.GetType().IsPrimitive)
{
return(false);
}
MUJson.serializeNumber(Convert.ToDouble(value), builder);
}
return(true);
}
protected static Hashtable parseObject(char[] json, ref int index)
{
Hashtable table = new Hashtable();
MUJson.nextToken(json, ref index);
bool done = false;
while (!done)
{
int token = MUJson.lookAhead(json, index);
if (token != 0)
{
if (token == 6)
{
MUJson.nextToken(json, ref index);
}
else
{
if (token == 2)
{
MUJson.nextToken(json, ref index);
return(table);
}
string name = MUJson.parseString(json, ref index);
if (name == null)
{
return(null);
}
token = MUJson.nextToken(json, ref index);
if (token != 5)
{
return(null);
}
bool success = true;
object value = MUJson.parseValue(json, ref index, ref success);
if (!success)
{
return(null);
}
table[name] = value;
}
continue;
}
return(null);
}
return(table);
}
protected static bool serializeDictionary(Dictionary <string, string> dict, StringBuilder builder)
{
builder.Append("{");
bool first = true;
foreach (KeyValuePair <string, string> kv in dict)
{
if (!first)
{
builder.Append(", ");
}
MUJson.serializeString(kv.Key, builder);
builder.Append(":");
MUJson.serializeString(kv.Value, builder);
first = false;
}
builder.Append("}");
return(true);
}
protected static bool serializeArray(ArrayList anArray, StringBuilder builder)
{
builder.Append("[");
bool first = true;
for (int i = 0; i < anArray.Count; i++)
{
object value = anArray[i];
if (!first)
{
builder.Append(", ");
}
if (!MUJson.serializeValue(value, builder))
{
return(false);
}
first = false;
}
builder.Append("]");
return(true);
}
protected static ArrayList parseArray(char[] json, ref int index)
{
ArrayList array = new ArrayList();
MUJson.nextToken(json, ref index);
bool done = false;
while (!done)
{
int token = MUJson.lookAhead(json, index);
if (token != 0)
{
if (token == 6)
{
MUJson.nextToken(json, ref index);
}
else
{
if (token == 4)
{
MUJson.nextToken(json, ref index);
break;
}
bool success = true;
object value = MUJson.parseValue(json, ref index, ref success);
if (!success)
{
return(null);
}
array.Add(value);
}
continue;
}
return(null);
}
return(array);
}
public static string jsonEncode(object json)
{
StringBuilder builder = new StringBuilder(2000);
return(MUJson.serializeValue(json, builder) ? builder.ToString() : null);
}
protected static int nextToken(char[] json, ref int index)
{
MUJson.eatWhitespace(json, ref index);
int result;
if (index == json.Length)
{
result = 0;
}
else
{
char c = json[index];
index++;
char c2 = c;
switch (c2)
{
case '"':
return(7);
case '#':
case '$':
case '%':
case '&':
case '\'':
case '(':
case ')':
case '*':
case '+':
case '.':
case '/':
break;
case ',':
return(6);
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return(8);
case ':':
return(5);
default:
switch (c2)
{
case '[':
return(3);
case '\\':
break;
case ']':
return(4);
default:
switch (c2)
{
case '{':
return(1);
case '}':
return(2);
}
break;
}
break;
}
index--;
int remainingLength = json.Length - index;
if (remainingLength >= 5)
{
if (json[index] == 'f' && json[index + 1] == 'a' && json[index + 2] == 'l' && json[index + 3] == 's' && json[index + 4] == 'e')
{
index += 5;
return(10);
}
}
if (remainingLength >= 4)
{
if (json[index] == 't' && json[index + 1] == 'r' && json[index + 2] == 'u' && json[index + 3] == 'e')
{
index += 4;
return(9);
}
}
if (remainingLength >= 4)
{
if (json[index] == 'n' && json[index + 1] == 'u' && json[index + 2] == 'l' && json[index + 3] == 'l')
{
index += 4;
return(11);
}
}
result = 0;
}
return(result);
}
protected static int lookAhead(char[] json, int index)
{
int saveIndex = index;
return(MUJson.nextToken(json, ref saveIndex));
}
protected static string parseString(char[] json, ref int index)
{
string s = "";
MUJson.eatWhitespace(json, ref index);
char c = json[index++];
bool complete = false;
while (!complete)
{
if (index == json.Length)
{
break;
}
c = json[index++];
if (c == '"')
{
complete = true;
break;
}
if (c == '\\')
{
if (index == json.Length)
{
break;
}
c = json[index++];
if (c == '"')
{
s += '"';
}
else if (c == '\\')
{
s += '\\';
}
else if (c == '/')
{
s += '/';
}
else if (c == 'b')
{
s += '\b';
}
else if (c == 'f')
{
s += '\f';
}
else if (c == 'n')
{
s += '\n';
}
else if (c == 'r')
{
s += '\r';
}
else if (c == 't')
{
s += '\t';
}
else if (c == 'u')
{
int remainingLength = json.Length - index;
if (remainingLength < 4)
{
break;
}
char[] unicodeCharArray = new char[4];
Array.Copy(json, index, unicodeCharArray, 0, 4);
s = s + "&#x" + new string(unicodeCharArray) + ";";
index += 4;
}
}
else
{
s += c;
}
}
string result;
if (!complete)
{
result = null;
}
else
{
result = s;
}
return(result);
}
