mirror of
git://git.suckless.org/sbase
synced 2024-12-25 08:22:44 +00:00
5a13865385
The loop magic broke along the way. Just drop that and write a proper early exit (= termination). Now it should work as expected.
153 lines
3.1 KiB
C
153 lines
3.1 KiB
C
/* See LICENSE file for copyright and license details. */
|
|
#include <ctype.h>
|
|
#include <limits.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "utf.h"
|
|
#include "util.h"
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
eprintf("%s format [arg ...]\n", argv0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
Rune *rarg;
|
|
size_t i, j, argi, lastargi, formatlen, arglen;
|
|
long long num;
|
|
double dou;
|
|
int cooldown = 0, width, precision;
|
|
char *format, *tmp, *arg, *fmt;
|
|
|
|
argv0 = argv[0];
|
|
if (argc < 2)
|
|
usage();
|
|
|
|
format = argv[1];
|
|
if ((tmp = strstr(format, "\\c"))) {
|
|
*tmp = 0;
|
|
cooldown = 1;
|
|
}
|
|
formatlen = unescape(format);
|
|
if (formatlen == 0)
|
|
return 0;
|
|
lastargi = 0;
|
|
for (i = 0, argi = 2; !cooldown || i < formatlen; i++, i = cooldown ? i : (i % formatlen)) {
|
|
if (i == 0) {
|
|
if (lastargi == argi)
|
|
break;
|
|
lastargi = argi;
|
|
}
|
|
if (format[i] != '%') {
|
|
putchar(format[i]);
|
|
continue;
|
|
}
|
|
|
|
/* field width */
|
|
width = 0;
|
|
for (i++; strchr("#-+ 0", format[i]); i++);
|
|
if (format[i] == '*') {
|
|
if (argi < argc)
|
|
width = estrtonum(argv[argi++], 0, INT_MAX);
|
|
else
|
|
cooldown = 1;
|
|
i++;
|
|
} else {
|
|
j = i;
|
|
for (; strchr("+-0123456789", format[i]); i++);
|
|
if (j != i) {
|
|
tmp = estrndup(format + j, i - j);
|
|
tmp[i - j] = 0;
|
|
width = estrtonum(tmp, 0, INT_MAX);
|
|
free(tmp);
|
|
}
|
|
}
|
|
|
|
/* field precision */
|
|
precision = 6;
|
|
if (format[i] == '.') {
|
|
if (format[++i] == '*') {
|
|
if (argi < argc)
|
|
precision = estrtonum(argv[argi++], 0, INT_MAX);
|
|
else
|
|
cooldown = 1;
|
|
} else {
|
|
j = i;
|
|
for (; strchr("+-0123456789", format[i]); i++);
|
|
if (j != i) {
|
|
tmp = estrndup(format + j, i - j);
|
|
tmp[i - j] = 0;
|
|
precision = estrtonum(tmp, 0, INT_MAX);
|
|
free(tmp);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (format[i] != '%') {
|
|
if (argi < argc)
|
|
arg = argv[argi++];
|
|
else {
|
|
arg = "";
|
|
cooldown = 1;
|
|
}
|
|
} else
|
|
putchar('%');
|
|
|
|
switch (format[i]) {
|
|
case 'b':
|
|
if ((tmp = strstr(arg, "\\c"))) {
|
|
*tmp = 0;
|
|
unescape(arg);
|
|
fputs(arg, stdout);
|
|
return 0;
|
|
}
|
|
unescape(arg);
|
|
fputs(arg, stdout);
|
|
break;
|
|
case 'c':
|
|
unescape(arg);
|
|
rarg = emalloc((utflen(arg) + 1) * sizeof(*rarg));
|
|
utftorunestr(arg, rarg);
|
|
efputrune(rarg, stdout, "<stdout>");
|
|
free(rarg);
|
|
break;
|
|
case 's':
|
|
fputs(arg, stdout);
|
|
break;
|
|
case 'd': case 'i': case 'o': case 'u': case 'x': case 'X':
|
|
arglen = strlen(arg);
|
|
for (j = 0; j < arglen && isspace(arg[j]); j++);
|
|
if (arg[j] == '\'' || arg[j] == '\"') {
|
|
arg += j + 1;
|
|
unescape(arg);
|
|
rarg = emalloc((utflen(arg) + 1) * sizeof(*rarg));
|
|
utftorunestr(arg, rarg);
|
|
num = rarg[0];
|
|
} else
|
|
num = (strlen(arg) > 0) ? estrtonum(arg, LLONG_MIN, LLONG_MAX) : 0;
|
|
fmt = estrdup("%*ll#");
|
|
fmt[4] = 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];
|
|
dou = (strlen(arg) > 0) ? estrtod(arg) : 0;
|
|
printf(fmt, width, precision, dou);
|
|
free(fmt);
|
|
break;
|
|
default:
|
|
eprintf("Invalid format specifier '%c'.\n", format[i]);
|
|
}
|
|
if (argi >= argc)
|
|
cooldown = 1;
|
|
}
|
|
return 0;
|
|
}
|