/// <summary>
/// Encodes a string for inclusion in JSON.
/// </summary>
/// <param name="s">String to encode.</param>
/// <returns>Encoded string.</returns>
public static string Encode(string s)
{
return(CommonTypes.Escape(s, jsonCharactersToEscape, jsonCharacterEscapes));
}
private static void Encode(object Object, int?Indent, StringBuilder Json)
{
if (Object == null)
{
Json.Append("null");
}
else
{
Type T = Object.GetType();
TypeInfo TI = T.GetTypeInfo();
if (TI.IsValueType)
{
if (Object is bool b)
{
Json.Append(CommonTypes.Encode(b));
}
else if (Object is char ch)
{
Json.Append('"');
Json.Append(Encode(new string(ch, 1)));
Json.Append('"');
}
else if (Object is double dbl)
{
Json.Append(CommonTypes.Encode(dbl));
}
else if (Object is float fl)
{
Json.Append(CommonTypes.Encode(fl));
}
else if (Object is decimal dec)
{
Json.Append(CommonTypes.Encode(dec));
}
else if (TI.IsEnum)
{
Json.Append('"');
Json.Append(Encode(Object.ToString()));
Json.Append('"');
}
else if (Object is DateTime TP)
{
Json.Append(((int)((TP.ToUniversalTime() - UnixEpoch).TotalSeconds)).ToString());
}
else
{
Json.Append(Object.ToString());
}
}
else if (Object is string s)
{
Json.Append('"');
Json.Append(Encode(s));
Json.Append('"');
}
else if (Object is IEnumerable <KeyValuePair <string, object> > Obj)
{
Encode(Obj, Indent, Json, null);
}
else if (Object is IEnumerable E)
{
IEnumerator e = E.GetEnumerator();
bool First = true;
Json.Append('[');
if (Indent.HasValue)
{
Indent = Indent + 1;
}
while (e.MoveNext())
{
if (First)
{
First = false;
}
else
{
Json.Append(',');
}
if (Indent.HasValue)
{
Json.AppendLine();
Json.Append(new string('\t', Indent.Value));
}
Encode(e.Current, Indent, Json);
}
if (!First && Indent.HasValue)
{
Json.AppendLine();
Indent = Indent - 1;
Json.Append(new string('\t', Indent.Value));
}
Json.Append(']');
}
else
{
throw new ArgumentException("Unsupported type: " + T.FullName, nameof(Object));
}
}
}
private static object Parse(string Json, ref int Pos, int Len)
{
StringBuilder sb = null;
int State = 0;
int Start = 0;
int i = 0;
char ch;
while (Pos < Len)
{
ch = Json[Pos++];
switch (State)
{
case 0:
if (ch <= ' ' || ch == 160)
{
break;
}
if ((ch >= '0' && ch <= '9') || (ch == '-') || (ch == '+'))
{
Start = Pos - 1;
State++;
}
else if (ch == '.')
{
Start = Pos - 1;
State += 2;
}
else if (ch == '"')
{
sb = new StringBuilder();
State += 5;
}
else if (ch == 't')
{
State += 11;
}
else if (ch == 'f')
{
State += 14;
}
else if (ch == 'n')
{
State += 18;
}
else if (ch == '[')
{
while (Pos < Len && ((ch = Json[Pos]) <= ' ' || ch == 160))
{
Pos++;
}
if (Pos >= Len)
{
throw new Exception("Unexpected end of JSON.");
}
if (ch == ']')
{
return(new object[0]);
}
List <object> Array = new List <object>();
while (true)
{
Array.Add(JSON.Parse(Json, ref Pos, Len));
while (Pos < Len && ((ch = Json[Pos]) <= ' ' || ch == 160))
{
Pos++;
}
if (Pos >= Len)
{
throw new Exception("Unexpected end of JSON.");
}
if (ch == ']')
{
break;
}
else if (ch == ',')
{
Pos++;
}
else
{
throw new Exception("Invalid JSON.");
}
}
Pos++;
return(Array.ToArray());
}
else if (ch == '{')
{
Dictionary <string, object> Object = new Dictionary <string, object>();
while (Pos < Len && ((ch = Json[Pos]) <= ' ' || ch == 160))
{
Pos++;
}
if (Pos >= Len)
{
throw new Exception("Unexpected end of JSON.");
}
if (ch == '}')
{
Pos++;
return(Object);
}
while (true)
{
if (!(JSON.Parse(Json, ref Pos, Len) is string Key))
{
throw new Exception("Expected member name.");
}
while (Pos < Len && ((ch = Json[Pos]) <= ' ' || ch == 160))
{
Pos++;
}
if (Pos >= Len)
{
throw new Exception("Unexpected end of JSON.");
}
if (ch != ':')
{
throw new Exception("Expected :");
}
Pos++;
Object[Key] = JSON.Parse(Json, ref Pos, Len);
while (Pos < Len && ((ch = Json[Pos]) <= ' ' || ch == 160))
{
Pos++;
}
if (Pos >= Len)
{
throw new Exception("Unexpected end of JSON.");
}
if (ch == '}')
{
break;
}
else if (ch == ',')
{
Pos++;
}
else
{
throw new Exception("Invalid JSON.");
}
}
Pos++;
return(Object);
}
else
{
throw new Exception("Invalid JSON.");
}
break;
case 1: // Number (Integer?)
if (ch >= '0' && ch <= '9')
{
break;
}
else if (ch == '.')
{
State++;
}
else if (ch == 'e' || ch == 'E')
{
State += 2;
}
else
{
Pos--;
string s = Json.Substring(Start, Pos - Start);
if (int.TryParse(s, out i))
{
return(i);
}
else if (long.TryParse(s, out long l))
{
return(l);
}
else if (CommonTypes.TryParse(s, out double d))
{
return(d);
}
else if (CommonTypes.TryParse(s, out decimal dec))
{
return(dec);
}
else
{
throw new Exception("Invalid JSON.");
}
}
break;
case 2: // Decimal number, decimal part.
if (ch >= '0' && ch <= '9')
{
break;
}
else if (ch == 'e' || ch == 'E')
{
State++;
}
else
{
Pos--;
string s = Json.Substring(Start, Pos - Start);
if (CommonTypes.TryParse(s, out double d))
{
return(d);
}
else if (CommonTypes.TryParse(s, out decimal dec))
{
return(dec);
}
else
{
throw new Exception("Invalid JSON.");
}
}
break;
case 3: // Decimal number, exponent sign.
if (ch == '+' || ch == '-' || (ch >= '0' && ch <= '9'))
{
State++;
}
else
{
throw new Exception("Invalid JSON.");
}
break;
case 4: // Decimal number, exponent.
if (ch >= '0' && ch <= '9')
{
break;
}
else
{
Pos--;
string s = Json.Substring(Start, Pos - Start);
if (CommonTypes.TryParse(s, out double d))
{
return(d);
}
else if (CommonTypes.TryParse(s, out decimal dec))
{
return(dec);
}
else
{
throw new Exception("Invalid JSON.");
}
}
case 5: // String.
if (ch == '\\')
{
State++;
}
else if (ch == '"')
{
return(sb.ToString());
}
else
{
sb.Append(ch);
}
break;
case 6: // String, escaped character.
switch (ch)
{
case 'a':
sb.Append('\a');
break;
case 'b':
sb.Append('\b');
break;
case 'f':
sb.Append('\f');
break;
case 'n':
sb.Append('\n');
break;
case 'r':
sb.Append('\r');
break;
case 't':
sb.Append('\t');
break;
case 'v':
sb.Append('\v');
break;
case 'x':
i = 0;
State += 4;
break;
case 'u':
i = 0;
State += 2;
break;
default:
sb.Append(ch);
break;
}
State--;
break;
case 7: // hex digit 1(4)
i = HexDigit(ch);
State++;
break;
case 8: // hex digit 2(4)
i <<= 4;
i |= HexDigit(ch);
State++;
break;
case 9: // hex digit 3(4)
i <<= 4;
i |= HexDigit(ch);
State++;
break;
case 10: // hex digit 4(4)
i <<= 4;
i |= HexDigit(ch);
sb.Append((char)i);
State -= 5;
break;
case 11: // True
if (ch == 'r')
{
State++;
break;
}
else
{
throw new Exception("Invalid JSON.");
}
case 12: // tRue
if (ch == 'u')
{
State++;
break;
}
else
{
throw new Exception("Invalid JSON.");
}
case 13: // trUe
if (ch == 'e')
{
return(true);
}
else
{
throw new Exception("Invalid JSON.");
}
case 14: // False
if (ch == 'a')
{
State++;
break;
}
else
{
throw new Exception("Invalid JSON.");
}
case 15: // fAlse
if (ch == 'l')
{
State++;
break;
}
else
{
throw new Exception("Invalid JSON.");
}
case 16: // faLse
if (ch == 's')
{
State++;
break;
}
else
{
throw new Exception("Invalid JSON.");
}
case 17: // falsE
if (ch == 'e')
{
return(false);
}
else
{
throw new Exception("Invalid JSON.");
}
case 18: // Null
if (ch == 'u')
{
State++;
break;
}
else
{
throw new Exception("Invalid JSON.");
}
case 19: // nUll
if (ch == 'l')
{
State++;
break;
}
else
{
throw new Exception("Invalid JSON.");
}
case 20: // nuLl
if (ch == 'l')
{
return(null);
}
else
{
throw new Exception("Invalid JSON.");
}
}
}
if (State == 1)
{
string s = Json.Substring(Start, Pos - Start);
if (int.TryParse(s, out i))
{
return(i);
}
else if (long.TryParse(s, out long l))
{
return(l);
}
else if (CommonTypes.TryParse(s, out double d))
{
return(d);
}
else if (CommonTypes.TryParse(s, out decimal dec))
{
return(dec);
}
else
{
throw new Exception("Invalid JSON.");
}
}
else if (State == 2)
{
string s = Json.Substring(Start, Pos - Start);
if (CommonTypes.TryParse(s, out double d))
{
return(d);
}
else if (CommonTypes.TryParse(s, out decimal dec))
{
return(dec);
}
else
{
throw new Exception("Invalid JSON.");
}
}
else if (State == 4)
{
string s = Json.Substring(Start, Pos - Start);
if (CommonTypes.TryParse(s, out double d))
{
return(d);
}
else if (CommonTypes.TryParse(s, out decimal dec))
{
return(dec);
}
else
{
throw new Exception("Invalid JSON.");
}
}
else
{
throw new Exception("Unexpected end of JSON.");
}
}
/// <summary>
/// <see cref="Object.ToString()"/>
/// </summary>
public override string ToString()
{
StringBuilder sb = new StringBuilder();
if (this.negation)
{
sb.Append('-');
}
sb.Append('P');
if (this.years != 0)
{
sb.Append(this.years.ToString());
sb.Append('Y');
}
if (this.months != 0)
{
sb.Append(this.months.ToString());
sb.Append('M');
}
if (this.days != 0)
{
sb.Append(this.days.ToString());
sb.Append('D');
}
if (this.hours != 0 || this.minutes != 0 || this.seconds != 0)
{
sb.Append('T');
if (this.hours != 0)
{
sb.Append(this.hours.ToString());
sb.Append('H');
}
if (this.minutes != 0)
{
sb.Append(this.minutes.ToString());
sb.Append('M');
}
if (this.seconds != 0)
{
sb.Append(CommonTypes.Encode(this.seconds));
sb.Append('S');
}
}
string Result = sb.ToString();
if (Result.Length <= 2)
{
Result += "T0S";
}
return(Result);
}
private static void Encode(object Object, int?Indent, StringBuilder Json)
{
if (Object is null)
{
Json.Append("null");
}
else
{
Type T = Object.GetType();
TypeInfo TI = T.GetTypeInfo();
if (TI.IsValueType)
{
if (Object is bool b)
{
Json.Append(CommonTypes.Encode(b));
}
else if (Object is char ch)
{
Json.Append('"');
Json.Append(Encode(new string(ch, 1)));
Json.Append('"');
}
else if (Object is double dbl)
{
Json.Append(CommonTypes.Encode(dbl));
}
else if (Object is float fl)
{
Json.Append(CommonTypes.Encode(fl));
}
else if (Object is decimal dec)
{
Json.Append(CommonTypes.Encode(dec));
}
else if (TI.IsEnum)
{
Json.Append('"');
Json.Append(Encode(Object.ToString()));
Json.Append('"');
}
else if (Object is DateTime TP)
{
Json.Append(((int)((TP.ToUniversalTime() - UnixEpoch).TotalSeconds)).ToString());
}
else
{
Json.Append(Object.ToString());
}
}
else if (Object is string s)
{
Json.Append('"');
Json.Append(Encode(s));
Json.Append('"');
}
else if (Object is IEnumerable <KeyValuePair <string, object> > Obj)
{
Encode(Obj, Indent, Json, null);
}
else if (Object is IEnumerable <KeyValuePair <string, IElement> > Obj2)
{
Encode(Obj2, Indent, Json);
}
else if (Object is IEnumerable E)
{
IEnumerator e = E.GetEnumerator();
bool First = true;
Json.Append('[');
if (Indent.HasValue)
{
Indent++;
}
while (e.MoveNext())
{
if (First)
{
First = false;
}
else
{
Json.Append(',');
}
if (Indent.HasValue)
{
Json.AppendLine();
Json.Append(new string('\t', Indent.Value));
}
Encode(e.Current, Indent, Json);
}
if (!First && Indent.HasValue)
{
Json.AppendLine();
Indent--;
Json.Append(new string('\t', Indent.Value));
}
Json.Append(']');
}
else if (Object is ObjectMatrix M && !(M.ColumnNames is null))
{
bool First = true;
Json.Append('[');
if (Indent.HasValue)
{
Indent++;
}
foreach (IElement Element in M.VectorElements)
{
if (First)
{
First = false;
Encode(M.ColumnNames, Indent, Json);
}
Json.Append(',');
if (Indent.HasValue)
{
Json.AppendLine();
Json.Append(new string('\t', Indent.Value));
}
Encode(Element.AssociatedObjectValue, Indent, Json);
}
if (!First && Indent.HasValue)
{
Json.AppendLine();
Indent--;
Json.Append(new string('\t', Indent.Value));
}
Json.Append(']');
}
/// <summary>
/// Decodes an object.
/// </summary>
/// <param name="ContentType">Internet Content Type.</param>
/// <param name="Data">Encoded object.</param>
/// <param name="BaseUri">Base URI, if any. If not available, value is null.</param>
/// <returns>Decoded object.</returns>
/// <exception cref="ArgumentException">If the object cannot be decoded.</exception>
public static object Decode(string ContentType, byte[] Data, Uri BaseUri)
{
Encoding Encoding = null;
KeyValuePair <string, string>[] Fields;
int i;
i = ContentType.IndexOf(';');
if (i > 0)
{
Fields = CommonTypes.ParseFieldValues(ContentType.Substring(i + 1).TrimStart());
ContentType = ContentType.Substring(0, i).TrimEnd();
foreach (KeyValuePair <string, string> Field in Fields)
{
if (Field.Key.ToUpper() == "CHARSET")
{
// Reference: http://www.iana.org/assignments/character-sets/character-sets.xhtml
switch (Field.Value.ToUpper())
{
case "ASCII":
case "US-ASCII":
Encoding = Encoding.ASCII;
break;
case "UTF-16LE":
case "UTF-16":
Encoding = Encoding.Unicode;
break;
case "UTF-16BE":
Encoding = Encoding.BigEndianUnicode;
break;
case "UTF-32":
case "UTF-32LE":
Encoding = Encoding.UTF32;
break;
case "UNICODE-1-1-UTF-7":
case "UTF-7":
Encoding = Encoding.UTF7;
break;
case "UTF-8":
Encoding = Encoding.UTF8;
break;
default:
Encoding = Encoding.GetEncoding(Field.Value);
break;
}
}
}
}
else
{
Fields = new KeyValuePair <string, string> [0];
}
return(Decode(ContentType, Data, Encoding, Fields, BaseUri));
}
private static void Encode(object Object, int?Indent, StringBuilder Json)
{
if (Object == null)
{
Json.Append("null");
}
else
{
Type T = Object.GetType();
TypeInfo TI = T.GetTypeInfo();
if (TI.IsValueType)
{
if (Object is bool b)
{
Json.Append(CommonTypes.Encode(b));
}
else if (Object is char ch)
{
Json.Append('"');
Json.Append(Encode(new string(ch, 1)));
Json.Append('"');
}
else if (Object is double dbl)
{
Json.Append(CommonTypes.Encode(dbl));
}
else if (Object is float fl)
{
Json.Append(CommonTypes.Encode(fl));
}
else if (Object is decimal dec)
{
Json.Append(CommonTypes.Encode(dec));
}
else if (TI.IsEnum)
{
Json.Append('"');
Json.Append(Encode(Object.ToString()));
Json.Append('"');
}
else
{
Json.Append(Object.ToString());
}
}
else if (Object is string s)
{
Json.Append('"');
Json.Append(Encode(s));
Json.Append('"');
}
else if (Object is Dictionary <string, object> Obj)
{
bool First = true;
Json.Append('{');
if (Indent.HasValue)
{
Indent = Indent + 1;
}
foreach (KeyValuePair <string, object> Member in Obj)
{
if (First)
{
First = false;
}
else
{
Json.Append(',');
}
if (Indent.HasValue)
{
Json.AppendLine();
Json.Append(new string('\t', Indent.Value));
}
Json.Append('"');
Json.Append(Encode(Member.Key));
Json.Append("\":");
if (Indent.HasValue)
{
Json.Append(' ');
}
Encode(Member.Value, Indent, Json);
}
if (!First)
{
Json.AppendLine();
if (Indent.HasValue)
{
Indent = Indent - 1;
}
Json.Append(new string('\t', Indent.Value));
}
Json.Append('}');
}
else if (Object is IEnumerable E)
{
IEnumerator e = E.GetEnumerator();
bool First = true;
Json.Append('[');
if (Indent.HasValue)
{
Indent = Indent + 1;
}
while (e.MoveNext())
{
if (First)
{
First = false;
}
else
{
Json.Append(',');
}
if (Indent.HasValue)
{
Json.AppendLine();
Json.Append(new string('\t', Indent.Value));
}
Encode(e.Current, Indent, Json);
}
if (!First)
{
Json.AppendLine();
if (Indent.HasValue)
{
Indent = Indent - 1;
}
Json.Append(new string('\t', Indent.Value));
}
Json.Append(']');
}
else
{
throw new ArgumentException("Unsupported type: " + T.FullName, nameof(Object));
}
}
}
