private static void AddQuoted(ILuaState lua, StringBuilder sb, int arg)
{
var s = lua.L_CheckString(arg);
sb.Append('"');
for (var i = 0; i < s.Length; ++i)
{
var c = s[i];
if (c == '"' || c == '\\' || c == '\n')
{
sb.Append('\\').Append(c);
}
else if (c == '\0' || Char.IsControl(c))
{
if (i + 1 >= s.Length || !Char.IsDigit(s[i + 1]))
{
sb.AppendFormat("\\{0:D}", (int)c);
}
else
{
sb.AppendFormat("\\{0:D3}", (int)c);
}
}
else
{
sb.Append(c);
}
}
sb.Append('"');
}
private static bool MatchClass(char c, char cl)
{
bool res;
switch (cl)
{
case 'a': res = Char.IsLetter(c); break;
case 'c': res = Char.IsControl(c); break;
case 'd': res = Char.IsDigit(c); break;
case 'g': throw new System.NotImplementedException();
case 'l': res = Char.IsLower(c); break;
case 'p': res = Char.IsPunctuation(c); break;
case 's': res = Char.IsWhiteSpace(c); break;
case 'u': res = Char.IsUpper(c); break;
case 'w': res = Char.IsLetterOrDigit(c); break;
case 'x': res = IsXDigit(c); break;
case 'z': res = (c == '\0'); break; /* deprecated option */
default: return(cl == c);
}
return(res);
}