public RInteger Negate()
{
RBignum z = (RBignum)Clone();
if (sign == false)
{
z.TwoComp();
}
for (int i = 0; i < len; i++)
{
z.digits[i] = ~z.digits[i];
}
if (sign)
{
z.TwoComp();
}
z.sign = !z.sign;
return(z.Normalize);
}
internal static object sprintf(RBasic r, params object[] args)
{
NetRuby ruby = r.ruby;
PFlag flags = PFlag.NONE;
bool tainted = false;
object ofmt;
int nextarg = getarg(args, 0, out ofmt);
if (ofmt is RBasic)
{
tainted = ((RBasic)ofmt).IsTainted;
}
string fmt = ofmt.ToString();
string result = String.Empty;
int width, prec;
for (int i = 0; i < fmt.Length; i++)
{
int n, ix;
for (ix = i; ix < fmt.Length && fmt[ix] != '%'; ix++)
{
;
}
result += fmt.Substring(i, ix - i);
if (ix >= fmt.Length)
{
break;
}
i = ix + 1;
width = prec = -1;
retry:
switch (fmt[i])
{
case ' ':
flags |= PFlag.SPACE;
i++;
goto retry;
case '#':
flags |= PFlag.SHARP;
i++;
goto retry;
case '+':
flags |= PFlag.PLUS;
i++;
goto retry;
case '-':
flags |= PFlag.MINUS;
i++;
goto retry;
case '0':
flags |= PFlag.ZERO;
i++;
goto retry;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
n = 0;
for (; i < fmt.Length && Char.IsDigit(fmt[i]); i++)
{
n = 10 * n + (int)Char.GetNumericValue(fmt[i]);
}
if (i >= fmt.Length)
{
throw new ArgumentException("malformed format string - %%[0-9]");
}
if (fmt[i] == '$')
{
nextarg = n;
i++;
goto retry;
}
width = n;
flags |= PFlag.WIDTH;
goto retry;
case '*':
if ((flags & PFlag.WIDTH) != 0)
{
throw new ArgumentException("width given twice");
}
flags |= PFlag.WIDTH;
width = getaster(fmt, ref i, ref nextarg, args);
if (width < 0)
{
flags |= PFlag.MINUS;
width = -width;
}
i++;
goto retry;
case '.':
if ((flags & PFlag.PREC) != 0)
{
throw new ArgumentException("precision given twice");
}
flags |= PFlag.PREC;
prec = 0;
i++;
if (fmt[i] == '*')
{
prec = getaster(fmt, ref i, ref nextarg, args);
if (prec < 0) /* ignore negative precision */
{
flags &= ~PFlag.PREC;
}
i++;
goto retry;
}
for (; i < fmt.Length && Char.IsDigit(fmt[i]); i++)
{
prec = 10 * prec + (int)Char.GetNumericValue(fmt[i]);
}
if (i >= fmt.Length)
{
throw new ArgumentException("malformed format string - %%.[0-9]");
}
goto retry;
case '\n':
i--;
goto case '%';
case '\0':
case '%':
if (flags != PFlag.NONE)
{
throw new ArgumentException("illegal format character - %%");
}
result += '%';
break;
case 'c': {
object val;
nextarg = getarg(args, nextarg, out val);
if ((flags & PFlag.MINUS) == 0)
{
if (width > 0)
{
result = result.PadRight(result.Length + width);
}
}
char c = (char)Convert.ToInt32(val);
result += c;
result = result.PadRight(result.Length + width);
break;
}
case 's': {
object arg;
nextarg = getarg(args, nextarg, out arg);
RString rs = RString.AsRString(ruby, arg);
if (rs.IsTainted)
{
tainted = true;
}
int len = rs.Length;
if ((flags & PFlag.PREC) != 0)
{
if (prec < len)
{
len = prec;
}
}
if ((flags & PFlag.WIDTH) != 0)
{
if (width > len)
{
width -= len;
if ((flags & PFlag.MINUS) == 0)
{
if (width > 0)
{
result = result.PadRight(result.Length + width);
}
}
result += rs.ToString();
if ((flags & PFlag.MINUS) != 0)
{
if (width > 0)
{
result = result.PadRight(result.Length + width);
}
}
break;
}
}
result += rs.ToString().Substring(0, len);
break;
}
case 'd':
case 'i':
case 'o':
case 'x':
case 'X':
case 'b':
case 'u': {
char sc = '\0';
char ch = fmt[i];
object val;
nextarg = getarg(args, nextarg, out val);
bool sign = false;
bool bignum = false;
long num = 0;
string prefix = String.Empty;
string s = String.Empty;
switch (ch)
{
case 'd':
case 'i':
sign = true; break;
case 'o':
case 'x':
case 'X':
case 'b':
case 'u':
default:
if ((flags & (PFlag.PLUS | PFlag.SPACE)) != 0)
{
sign = true;
}
break;
}
if ((flags & PFlag.SHARP) != 0)
{
if (fmt[i] == 'o')
{
prefix = "0";
}
else if (fmt[i] == 'x')
{
prefix = "0x";
}
else if (fmt[i] == 'X')
{
prefix = "0X";
}
else if (fmt[i] == 'b')
{
prefix = "0b";
}
if (prefix.Length > 0)
{
width -= prefix.Length;
}
}
bin_retry:
if (val is RFloat)
{
val = ((RFloat)val).ToInteger();
goto bin_retry;
}
else if (val is double)
{
val = RFloat.ToInteger(ruby, (double)val);
goto bin_retry;
}
else if (val is string)
{
val = RInteger.StringToInteger(ruby, (string)val, 0);
goto bin_retry;
}
else if (val is RString)
{
val = ((RString)val).ToInteger();
goto bin_retry;
}
else if (val is int)
{
num = (long)(int)val;
}
else if (val is long)
{
num = (long)val;
}
else if (val is uint)
{
num = (long)(uint)val;
}
else if (val is RBignum)
{
bignum = true;
}
else
{
num = RInteger.ToLong(ruby, val);
}
int bas = 0;
if (ch == 'u' || ch == 'd' || ch == 'i')
{
bas = 10;
}
else if (ch == 'x' || ch == 'X')
{
bas = 16;
}
else if (ch == 'o')
{
bas = 8;
}
else if (ch == 'b')
{
bas = 2;
}
if (!bignum)
{
if (sign)
{
if (ch == 'i')
{
ch = 'd'; /* %d and %i are identical */
}
if (num < 0)
{
num = -num;
sc = '-';
width--;
}
else if ((flags & PFlag.PLUS) != 0)
{
sc = '+';
width--;
}
else if ((flags & PFlag.SPACE) != 0)
{
sc = ' ';
width--;
}
s = Convert.ToString(num, bas);
goto format_integer;
}
else
{
s = Convert.ToString(num, bas);
goto format_integer;
}
}
// bignum
RBignum big = (RBignum)val;
if (sign)
{
s = big.ToRString(bas).ToString();
if (s[0] == '-')
{
s = s.Substring(1);
sc = '-';
width--;
}
else if ((flags & PFlag.PLUS) != 0)
{
sc = '+';
width--;
}
else if ((flags & PFlag.SPACE) != 0)
{
sc = ' ';
width--;
}
goto format_integer;
}
if (big.Sign == false)
{
big = (RBignum)big.Clone();
big.TwoComp();
}
s = big.ToRString(bas).ToString();
if (s[0] == '-')
{
s = remove_sign_bits(s.Substring(1), bas);
StringBuilder sb = new StringBuilder(s.Length + 3);
sb.Append("..");
switch (bas)
{
case 16:
if (s[0] != 'f')
{
sb.Append('f');
}
break;
case 8:
if (s[0] != '7')
{
sb.Append('7');
}
break;
}
sb.Append(s);
s = sb.ToString();
}
format_integer:
int pos = -1;
int len = s.Length;
if (ch == 'X')
{
s = s.ToUpper();
}
if (prec < len)
{
prec = len;
}
width -= prec;
if ((flags & (PFlag.ZERO | PFlag.MINUS)) == 0 && s[0] != '.')
{
if (width > 0)
{
s = s.PadLeft(s.Length + width);
}
}
if (sc != '\0')
{
result += sc;
}
if (prefix.Length > 0)
{
result += prefix;
if (pos != 0)
{
pos += prefix.Length;
}
}
if ((flags & PFlag.MINUS) == 0)
{
char c = ' ';
if (s[0] == '.')
{
c = '.';
if ((flags & PFlag.PREC) != 0 && prec > len)
{
pos = result.Length;
}
else
{
pos = result.Length + 2;
}
}
else if ((flags & PFlag.ZERO) != 0)
{
c = '0';
}
if (width > 0)
{
result = result.PadRight(result.Length + width, c);
}
}
if (len < prec)
{
if (width > 0)
{
result = result.PadRight(result.Length + (prec - len), (s[0] == '.'?'.':'0'));
}
}
result += s;
if (width > 0)
{
result = result.PadRight(result.Length + width);
}
break;
}
case 'f':
case 'g':
case 'G':
case 'e':
case 'E': {
object val;
nextarg = getarg(args, nextarg, out val);
double fval = 0.0;
if (val is RString || val is string)
{
fval = Convert.ToDouble(((RString)val).ToString());
}
else if (val is int || val is long || val is uint)
{
fval = Convert.ToDouble(val);
}
else if (val is RFloat)
{
fval = ((RFloat)val).Double;
}
else if (val is double)
{
fval = (double)val;
}
string buf;
if (fmt[i] != 'e' && fmt[i] != 'E')
{
buf = new String(fmt[i], 1);
if ((flags & PFlag.PREC) != 0)
{
buf += prec.ToString();
}
}
else
{
buf = "#";
if ((flags & PFlag.SHARP) != 0)
{
buf += ".0";
}
buf += fmt[i];
if ((flags & PFlag.PLUS) != 0)
{
buf += '+';
}
if ((flags & PFlag.PREC) != 0)
{
buf += new String('0', prec);
}
else
{
buf += '0';
}
}
buf = fval.ToString(buf);
if ((flags & PFlag.WIDTH) != 0)
{
}
result += buf;
break;
}
default:
throw new ArgumentException(String.Format("malformed format string - %{0}", fmt[i]));
}
flags = PFlag.NONE;
}
if (tainted)
{
return(new RString(ruby, result, true));
}
return(result);
}