*
* http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/seq.html
-USE_SEQ(NEWTOY(seq, "<1>3?f:s:", TOYFLAG_USR|TOYFLAG_BIN))
+USE_SEQ(NEWTOY(seq, "<1>3?f:s:w[!fw]", TOYFLAG_USR|TOYFLAG_BIN))
config SEQ
bool "seq"
depends on TOYBOX_FLOAT
default y
help
- usage: seq [-f fmt_str] [-s sep_str] [first] [increment] last
+ usage: seq [-w|-f fmt_str] [-s sep_str] [first] [increment] last
Count from first to last, by increment. Omitted arguments default
to 1. Two arguments are used as first and last. Arguments can be
-f Use fmt_str as a printf-style floating point format string
-s Use sep_str as separator, default is a newline character
+ -w Pad to equal width with leading zeroes.
*/
#define FOR_seq
void seq_main(void)
{
double first, increment, last, dd;
- char *sep_str = "\n";
- char *fmt_str = "%g";
+ char *sep_str = "\n", *fmt_str = "%g";
int output = 0;
// Parse command line arguments, with appropriate defaults.
default: last = atof(toys.optargs[toys.optc-1]);
}
+ // Pad to largest width
+ if (toys.optflags & FLAG_w) {
+ char *s;
+ int i, len, dot, left = 0, right = 0;
+
+ for (i=0; i<3; i++) {
+ dd = (double []){first, increment, last}[i];
+
+ len = sprintf(toybuf, "%g", dd);
+ if ((s = strchr(toybuf, '.'))) {
+ dot = s-toybuf;
+ if (left<dot) left = dot;
+ dot = len-dot-1;
+ if (right<dot) right = dot;
+ } else if (len>left) left = len;
+ }
+
+ sprintf(fmt_str = toybuf, "%%0%d.%df", left+right+!!right, right);
+ }
if (toys.optflags & FLAG_f) insanitize(fmt_str = TT.fmt);
if (toys.optflags & FLAG_s) sep_str = TT.sep;