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sleep: if FANCY && DESKTOP, support fractional seconds, minutes,

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hours and so on. It's coreutils compat. bloatcheck is atrocious :(

function                                             old     new   delta
sleep_main                                            71     362    +291
bb_strtod                                              -     127    +127
make_device                                         1269    1294     +25
getoptscmd                                           708     713      +5
switch_root_main                                     402     401      -1
display_speed                                         90      85      -5
show_entry                                           295     289      -6
parse_expr                                           841     833      -8
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/4 up/down: 448/-20)           Total: 428 bytes
This commit is contained in:
Denis Vlasenko 2008-07-12 17:05:14 +00:00
parent 34e8f6a7ac
commit adbb73bda7
5 changed files with 136 additions and 39 deletions
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57
coreutils/sleep.c
View File

@ -36,28 +36,69 @@ static const struct suffix_mult sfx[] = {
int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int sleep_main(int argc UNUSED_PARAM, char **argv)
{
#if ENABLE_FEATURE_FANCY_SLEEP && ENABLE_DESKTOP
double duration;
struct timespec ts;
#else
unsigned duration;
#endif
++argv;
if (!*argv)
bb_show_usage();
#if ENABLE_FEATURE_FANCY_SLEEP
#if ENABLE_FEATURE_FANCY_SLEEP && ENABLE_DESKTOP
duration = 0;
do {
duration += xatoul_range_sfx(*argv, 0, UINT_MAX-duration, sfx);
char *arg = *argv;
if (strchr(arg, '.')) {
double d;
int len = strspn(arg, "0123456789.");
char sv = arg[len];
arg[len] = '\0';
d = bb_strtod(arg, NULL);
if (errno)
bb_show_usage();
arg[len] = sv;
len--;
sv = arg[len];
arg[len] = '1';
duration += d * xatoul_sfx(&arg[len], sfx);
arg[len] = sv;
} else
duration += xatoul_sfx(arg, sfx);
} while (*++argv);
#else /* FEATURE_FANCY_SLEEP */
ts.tv_sec = MAXINT(typeof(ts.tv_sec));
ts.tv_nsec = 0;
if (duration >= 0 && duration < ts.tv_sec) {
ts.tv_sec = duration;
ts.tv_nsec = (duration - ts.tv_sec) * 1000000000;
}
do {
errno = 0;
nanosleep(&ts, &ts);
} while (errno == EINTR);
#elif ENABLE_FEATURE_FANCY_SLEEP
duration = 0;
do {
duration += xatou_range_sfx(*argv, 0, UINT_MAX - duration, sfx);
} while (*++argv);
sleep(duration);
#else /* simple */
duration = xatou(*argv);
sleep(duration);
// Off. If it's really needed, provide example why
//if (sleep(duration)) {
// bb_perror_nomsg_and_die();
//}
#endif /* FEATURE_FANCY_SLEEP */
if (sleep(duration)) {
bb_perror_nomsg_and_die();
}
#endif
return EXIT_SUCCESS;
}

2
include/xatonum.h
View File

@ -169,7 +169,7 @@ uint32_t bb_strtou32(const char *arg, char **endp, int base)
/* Floating point */
/* double bb_strtod(const char *arg, char **endp); */
double bb_strtod(const char *arg, char **endp) FAST_FUNC;
#if __GNUC_PREREQ(4,1)
# pragma GCC visibility pop

1
libbb/Kbuild
View File

@ -13,6 +13,7 @@ lib-y += bb_basename.o
lib-y += bb_do_delay.o
lib-y += bb_pwd.o
lib-y += bb_qsort.o
lib-y += bb_strtod.o
lib-y += bb_strtonum.o
lib-y += change_identity.o
lib-y += chomp.o

85
libbb/bb_strtod.c Normal file
View File

@ -0,0 +1,85 @@
/* vi: set sw=4 ts=4: */
/*
* Utility routines.
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#include <math.h> /* just for HUGE_VAL */
#define NOT_DIGIT(a) (((unsigned char)(a-'0')) > 9)
double FAST_FUNC bb_strtod(const char *arg, char **endp)
{
double v;
char *endptr;
if (arg[0] != '-' && NOT_DIGIT(arg[0]))
goto err;
errno = 0;
v = strtod(arg, &endptr);
if (endp)
*endp = endptr;
if (endptr[0]) {
/* "1234abcg" or out-of-range? */
if (isalnum(endptr[0]) || errno) {
err:
errno = ERANGE;
return HUGE_VAL;
}
/* good number, just suspicious terminator */
errno = EINVAL;
}
return v;
}
#if 0
/* String to timespec: "NNNN[.NNNNN]" -> struct timespec.
* Can be used for other fixed-point needs.
* Returns pointer past last converted char,
* and returns errno similar to bb_strtoXX functions.
*/
char* FAST_FUNC bb_str_to_ts(struct timespec *ts, const char *arg)
{
if (sizeof(ts->tv_sec) <= sizeof(int))
ts->tv_sec = bb_strtou(arg, &arg, 10);
else if (sizeof(ts->tv_sec) <= sizeof(long))
ts->tv_sec = bb_strtoul(arg, &arg, 10);
else
ts->tv_sec = bb_strtoull(arg, &arg, 10);
ts->tv_nsec = 0;
if (*arg != '.')
return arg;
/* !EINVAL: number is not ok (alphanumeric ending, overflow etc) */
if (errno != EINVAL)
return arg;
if (!*++arg) /* "NNN." */
return arg;
{ /* "NNN.xxx" - parse xxx */
int ndigits;
char *p;
char buf[10]; /* we never use more than 9 digits */
/* Need to make a copy to avoid false overflow */
safe_strncpy(buf, arg, 10);
ts->tv_nsec = bb_strtou(buf, &p, 10);
ndigits = p - buf;
arg += ndigits;
/* normalize to nsec */
while (ndigits < 9) {
ndigits++;
ts->tv_nsec *= 10;
}
while (isdigit(*arg)) /* skip possible 10th plus digits */
arg++;
}
return arg;
}
#endif

30
libbb/bb_strtonum.c
View File

@ -124,33 +124,3 @@ int FAST_FUNC bb_strtoi(const char *arg, char **endp, int base)
return handle_errors(v, endp, endptr);
}
#endif
/* Floating point */
#if 0
#include <math.h> /* just for HUGE_VAL */
#define NOT_DIGIT(a) (((unsigned char)(a-'0')) > 9)
double FAST_FUNC bb_strtod(const char *arg, char **endp)
{
double v;
char *endptr;
if (arg[0] != '-' && NOT_DIGIT(arg[0])) goto err;
errno = 0;
v = strtod(arg, &endptr);
if (endp) *endp = endptr;
if (endptr[0]) {
/* "1234abcg" or out-of-range? */
if (isalnum(endptr[0]) || errno) {
err:
errno = ERANGE;
return HUGE_VAL;
}
/* good number, just suspicious terminator */
errno = EINVAL;
}
return v;
}
#endif