/// <summary> The global unescape method, as per ECMA-262 15.1.2.5.</summary>
private object js_unescape(object [] args)
{
string s = ScriptConvert.ToString(args, 0);
int firstEscapePos = s.IndexOf((char)'%');
if (firstEscapePos >= 0)
{
int L = s.Length;
char [] buf = s.ToCharArray();
int destination = firstEscapePos;
for (int k = firstEscapePos; k != L;)
{
char c = buf [k];
++k;
if (c == '%' && k != L)
{
int end, start;
if (buf [k] == 'u')
{
start = k + 1;
end = k + 5;
}
else
{
start = k;
end = k + 2;
}
if (end <= L)
{
int x = 0;
for (int i = start; i != end; ++i)
{
x = ScriptConvert.XDigitToInt(buf [i], x);
}
if (x >= 0)
{
c = (char)x;
k = end;
}
}
}
buf [destination] = c;
++destination;
}
s = new string (buf, 0, destination);
}
return(s);
}