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Add flag support to printf(1) 

We skipped flags before, so no real bug, but it's trivial to add
now, so there's no reason not to do it.
This commit is contained in:
FRIGN 2015-04-27 20:27:37 +02:00 committed by sin
parent b333176b8c
commit 0b76449414
1 changed files with 12 additions and 6 deletions
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18
printf.c
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@ -22,7 +22,7 @@ main(int argc, char *argv[])
long long num;
double dou;
int cooldown = 0, width, precision;
char *format, *tmp, *arg, *fmt;
char *format, *tmp, *arg, *fmt, flag;
argv0 = argv[0];
if (argc < 2)
@ -48,9 +48,13 @@ main(int argc, char *argv[])
continue;
}
/* flag */
for (flag = ' ', i++; strchr("#-+ 0", format[i]); i++) {
flag = format[i];
}
/* field width */
width = -1;
for (i++; strchr("#-+ 0", format[i]); i++);
if (format[i] == '*') {
if (argi < argc)
width = estrtonum(argv[argi++], 0, INT_MAX);
@ -133,14 +137,16 @@ main(int argc, char *argv[])
num = rarg[0];
} else
num = (strlen(arg) > 0) ? estrtonum(arg, LLONG_MIN, LLONG_MAX) : 0;
fmt = estrdup("%*ll#");
fmt[4] = format[i];
fmt = estrdup("%#*ll#");
fmt[1] = flag;
fmt[5] = format[i];
printf(fmt, width, num);
free(fmt);
break;
case 'a': case 'A': case 'e': case 'E': case 'f': case 'F': case 'g': case 'G':
fmt = estrdup("%*.*#");
fmt[4] = format[i];
fmt = estrdup("%#*.*#");
fmt[1] = flag;
fmt[5] = format[i];
dou = (strlen(arg) > 0) ? estrtod(arg) : 0;
printf(fmt, width, precision, dou);
free(fmt);