static void print_direc(char *start, size_t length, int field_width, int precision,
const char *argument)
{
char *p; /* Null-terminated copy of % directive. */
p = xmalloc((unsigned) (length + 1));
strncpy(p, start, length);
p[length] = 0;
switch (p[length - 1]) {
case 'd':
case 'i':
if (field_width < 0) {
if (precision < 0)
printf(p, my_xstrtol(argument));
else
printf(p, precision, my_xstrtol(argument));
} else {
if (precision < 0)
printf(p, field_width, my_xstrtol(argument));
else
printf(p, field_width, precision, my_xstrtol(argument));
}
break;
case 'o':
case 'u':
case 'x':
case 'X':
if (field_width < 0) {
if (precision < 0)
printf(p, my_xstrtoul(argument));
else
printf(p, precision, my_xstrtoul(argument));
} else {
if (precision < 0)
printf(p, field_width, my_xstrtoul(argument));
else
printf(p, field_width, precision, my_xstrtoul(argument));
}
break;
case 'f':
case 'e':
case 'E':
case 'g':
case 'G':
if (field_width < 0) {
if (precision < 0)
printf(p, my_xstrtod(argument));
else
printf(p, precision, my_xstrtod(argument));
} else {
if (precision < 0)
printf(p, field_width, my_xstrtod(argument));
else
printf(p, field_width, precision, my_xstrtod(argument));
}
break;
case 'c':
printf(p, *argument);
break;
case 's':
if (field_width < 0) {
if (precision < 0)
printf(p, argument);
else
printf(p, precision, argument);
} else {
if (precision < 0)
printf(p, field_width, argument);
else
printf(p, field_width, precision, argument);
}
break;
}
free(p);
}
static int print_formatted(char *format, int argc, char **argv)
{
int save_argc = argc; /* Preserve original value. */
char *f; /* Pointer into 'format'. */
char *direc_start; /* Start of % directive. */
size_t direc_length; /* Length of % directive. */
int field_width; /* Arg to first '*', or -1 if none. */
int precision; /* Arg to second '*', or -1 if none. */
for (f = format; *f; ++f) {
switch (*f) {
case '%':
direc_start = f++;
direc_length = 1;
field_width = precision = -1;
if (*f == '%') {
bb_putchar('%');
break;
}
if (*f == 'b') {
if (argc > 0) {
print_esc_string(*argv);
++argv;
--argc;
}
break;
}
if (strchr("-+ #", *f)) {
++f;
++direc_length;
}
if (*f == '*') {
++f;
++direc_length;
if (argc > 0) {
field_width = my_xstrtoul(*argv);
++argv;
--argc;
} else
field_width = 0;
} else {
while (isdigit(*f)) {
++f;
++direc_length;
}
}
if (*f == '.') {
++f;
++direc_length;
if (*f == '*') {
++f;
++direc_length;
if (argc > 0) {
precision = my_xstrtoul(*argv);
++argv;
--argc;
} else
precision = 0;
} else
while (isdigit(*f)) {
++f;
++direc_length;
}
}
if (*f == 'l' || *f == 'L' || *f == 'h') {
++f;
++direc_length;
}
/*
if (!strchr ("diouxXfeEgGcs", *f))
fprintf(stderr, "%%%c: invalid directive", *f);
*/
++direc_length;
if (argc > 0) {
print_direc(direc_start, direc_length, field_width,
precision, *argv);
++argv;
--argc;
} else
print_direc(direc_start, direc_length, field_width,
precision, "");
break;
case '\\':
if (*++f == 'c')
exit(0);
bb_putchar(bb_process_escape_sequence((const char **)&f));
f--;
break;
default:
bb_putchar(*f);
}
}
return save_argc - argc;
}
static void print_direc(char *format, unsigned fmt_length,
int field_width, int precision,
const char *argument)
{
long lv;
double dv;
char saved;
char *have_prec, *have_width;
have_prec = strstr(format, ".*");
have_width = strchr(format, '*');
if (have_width - 1 == have_prec)
have_width = NULL;
saved = format[fmt_length];
format[fmt_length] = '\0';
switch (format[fmt_length - 1]) {
case 'c':
printf(format, *argument);
break;
case 'd':
case 'i':
lv = my_xstrtol(argument);
print_long:
/* if (errno) return; - see comment at the top */
if (!have_width) {
if (!have_prec)
printf(format, lv);
else
printf(format, precision, lv);
} else {
if (!have_prec)
printf(format, field_width, lv);
else
printf(format, field_width, precision, lv);
}
break;
case 'o':
case 'u':
case 'x':
case 'X':
lv = my_xstrtoul(argument);
/* cheat: unsigned long and long have same width, so... */
goto print_long;
case 's':
/* Are char* and long the same? (true for most arches) */
if (sizeof(argument) == sizeof(lv)) {
lv = (long)(ptrdiff_t)argument;
goto print_long;
} else { /* Hope compiler will optimize it out */
if (!have_width) {
if (!have_prec)
printf(format, argument);
else
printf(format, precision, argument);
} else {
if (!have_prec)
printf(format, field_width, argument);
else
printf(format, field_width, precision, argument);
}
break;
}
case 'f':
case 'e':
case 'E':
case 'g':
case 'G':
dv = my_xstrtod(argument);
/* if (errno) return; */
if (!have_width) {
if (!have_prec)
printf(format, dv);
else
printf(format, precision, dv);
} else {
if (!have_prec)
printf(format, field_width, dv);
else
printf(format, field_width, precision, dv);
}
break;
} /* switch */
format[fmt_length] = saved;
}