/***
* MUST represent all strings (including object member names) in their minimal-length UTF-8 encoding
* avoiding escape sequences for characters except those otherwise inexpressible in JSON (U+0022 QUOTATION MARK, U+005C REVERSE SOLIDUS, and ASCII control characters U+0000 through U+001F) or UTF-8 (U+D800 through U+DFFF), and
* avoiding escape sequences for combining characters, variation selectors, and other code points that affect preceding characters, and
* using two-character escape sequences where possible for characters that require escaping:
* \b U+0008 BACKSPACE
* \t U+0009 CHARACTER TABULATION ("tab")
* \n U+000A LINE FEED ("newline")
* \f U+000C FORM FEED
* \r U+000D CARRIAGE RETURN
* \" U+0022 QUOTATION MARK
* \\ U+005C REVERSE SOLIDUS ("backslash"), and
* using six-character \\u00xx uppercase hexadecimal escape sequences for control characters that require escaping but lack a two-character sequence, and
* using six-character \\uDxxx uppercase hexadecimal escape sequences for lone surrogates
* @param value
*/
private void SerializeString(string value)
{
buffer.append(Constants.C_DOUBLE_QUOTE);
if (FORBIDDEN.Matches(value).Count == 0)
{
buffer.append(value);
}
else
{
char[] chars = value.ToCharArray();
for (int i = 0; i < chars.Length; i++)
{
char c = chars[i];
{
if (FORBIDDEN.Matches(Convert.ToString(c)).Count == 0)
{
buffer.append(c);
continue;
}
if (java.lang.Character.isSurrogate(chars[i]) && chars.Length > i + 1 && java.lang.Character.isSurrogatePair(chars[i], chars[i + 1]))
{
buffer.appendCodePoint(CharHelper.ToCodePoint(chars[i], chars[++i]));
continue;
}
switch (c)
{
case Constants.C_LINE_FEED:
Escape('n');
break;
case Constants.C_BACKSPACE:
Escape('b');
break;
case Constants.C_FORM_FEED:
Escape('f');
break;
case Constants.C_CARRIAGE_RETURN:
Escape('r');
break;
case Constants.C_TAB:
Escape('t');
break;
case Constants.C_DOUBLE_QUOTE:
case Constants.C_BACK_SLASH:
Escape(c);
break;
default:
Escape('u');
string hex = string.Format("{0:x4}", (int)c).ToUpper();
buffer.append(hex);
break;
}
}
}
}
buffer.append(Constants.C_DOUBLE_QUOTE);
}
