private void ResetState()
{
_varesc = VariableEscapeState.Flag;
_escape = EngineState.Regular;
_numsign = false;
_signed = false;
_aleft = false;
_0pad = false;
_aindex = 0;
_cindex = 0;
_wdh = "";
_prc = "";
}
private string ProcessCharacters(string chars, object[] args)
{
char first = chars[0];
switch (_escape)
{
case EngineState.Regular:
switch (first)
{
case '\\':
_escape = EngineState.BackslashEscape;
return("");
case '%':
_escape = EngineState.VariableEscape;
_varesc = VariableEscapeState.Flag;
return("");
default:
return(chars);
}
case EngineState.BackslashEscape:
_escape = EngineState.Regular;
switch (first)
{
case 'r':
return("\r");
case 'n':
return("\n");
case 't':
return("\t");
case 'v':
return("\x0b");
case 'b':
return("\x08");
case 'a':
return("\x07");
case 'f':
return("\x0c");
case 'd':
return("\x7f");
case '0':
return("\0");
case '\\':
return("\\");
case 'x':
string hex = GetNextChars(2);
return(((char)int.Parse(hex, NumberStyles.HexNumber)).ToString());
case 'u':
string unc = GetNextChars(4);
return(((char)int.Parse(unc, NumberStyles.HexNumber)).ToString());
default:
return(chars);
}
case EngineState.VariableEscape:
switch (_varesc)
{
case VariableEscapeState.Flag:
switch (first)
{
case '-':
_aleft = true;
break;
case '+':
_signed = true;
break;
case '0':
_varesc = VariableEscapeState.Width;
_0pad = true;
break;
case '#':
_numsign = true;
break;
default:
if (char.IsDigit(first))
{
_varesc = VariableEscapeState.Width;
}
else if (first == '.')
{
_varesc = VariableEscapeState.Precision;
}
else
{
_varesc = VariableEscapeState.Type;
BackPaddle();
}
break;
}
return("");
case VariableEscapeState.Width:
if (char.IsDigit(first))
{
_wdh += first;
}
else if (first == '.')
{
_varesc = VariableEscapeState.Precision;
}
else
{
_varesc = VariableEscapeState.Type;
BackPaddle();
}
return("");
case VariableEscapeState.Precision:
if (char.IsDigit(first))
{
_prc += first;
}
else
{
_varesc = VariableEscapeState.Type;
BackPaddle();
}
return("");
case VariableEscapeState.Type:
object param = (_aindex < args.Length ? args[_aindex] : null) ?? AutoItVariantType.Empty;
long precision = long.Parse('0' + _prc);
long width = long.Parse('0' + _wdh);
string prefix = "";
string res = "";
char? sig = null;
_aindex++;
_escape = EngineState.Regular;
switch (first)
{
case 'd':
case 'i':
{
long val = (long)param;
if (val < 0)
{
sig = '-';
val = -val;
_0pad = false;
}
else if (_signed)
{
sig = '+';
}
res = val.ToString();
break;
}
case 'u':
res = ((ulong)param).ToString();
break;
case 'x':
case 'X':
res = ((ulong)param).ToString(first.ToString());
if (_numsign)
{
prefix = $"0{first}";
}
break;
case 'o':
case 'O':
res = Convert.ToString((long)param, 8);
if (_numsign)
{
prefix = "0";
}
break;
case 'b':
case 'B':
res = Convert.ToString((long)param, 2);
if (_numsign)
{
prefix = "0b";
}
break;
case 'f':
case 'F':
case 'g':
case 'G':
res = ((decimal)param).ToString();
if ((_numsign || precision > 0) && !res.Contains("."))
{
res += ".0";
}
int idx = res.IndexOf('.');
if ((idx > 0) && (precision > 0) && (res.Length - (idx + 1) < precision))
{
res += new string('0', (int)(precision - res.Length + idx + 1)); // TODO: ?
}
if (char.ToLower(first) == 'f')
{
res = res.Remove((int)(idx + precision));
}
break;
case 'e':
case 'E':
// TODO
#warning TODO
break;
case 'a':
case 'A':
if (param is AutoItVariantType variant)
{
_0pad = false;
if (variant.IsString)
{
res = variant.ToString();
}
else if (variant.IsArray)
{
res = variant.ToArrayString();
}
else if (variant.IsObject)
{
res = variant.ToCOMString();
}
break;
}
else
{
goto case 's';
}
case 's':
_0pad = false;
res = param.ToString();
break;
default:
throw new InvalidOperationException();
}
if (sig is char c)
{
prefix += c;
}
if (res.Length + prefix.Length < width)
{
if (_aleft)
{
res = prefix + res + new string(' ', (int)(width - res.Length));
}
else if (_0pad)
{
res = prefix + new string('0', (int)(width - res.Length)) + res;
}
else
{
res = new string(' ', (int)(width - res.Length)) + prefix + res;
}
}
return(res);
}
break;
}
throw new InvalidOperationException();
}