bc: convert to "G trick" - this returns bc to zero bss increase

[oweals/busybox.git] / coreutils / sleep.c

diff --git a/coreutils/sleep.c b/coreutils/sleep.c
index 0ffbd16eb77156f0cbd1eac5935d43b8a80c433f..126665839a2a6dea284e0357c76c29d98dfe15d1 100644 (file)
--- a/coreutils/sleep.c
+++ b/coreutils/sleep.c
@@ -6,17 +6,41 @@
  *
  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  */
-
-/* BB_AUDIT SUSv3 compliant */
-/* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */
-/* http://www.opengroup.org/onlinepubs/007904975/utilities/sleep.html */
-
 /* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
  *
  * Rewritten to do proper arg and error checking.
  * Also, added a 'fancy' configuration to accept multiple args with
  * time suffixes for seconds, minutes, hours, and days.
  */
+//config:config SLEEP
+//config:      bool "sleep (1.7 kb)"
+//config:      default y
+//config:      help
+//config:      sleep is used to pause for a specified number of seconds.
+//config:      It comes in 3 versions:
+//config:      - small: takes one integer parameter
+//config:      - fancy: takes multiple integer arguments with suffixes:
+//config:              sleep 1d 2h 3m 15s
+//config:      - fancy with fractional numbers:
+//config:              sleep 2.3s 4.5h sleeps for 16202.3 seconds
+//config:      Last one is "the most compatible" with coreutils sleep,
+//config:      but it adds around 1k of code.
+//config:
+//config:config FEATURE_FANCY_SLEEP
+//config:      bool "Enable multiple arguments and s/m/h/d suffixes"
+//config:      default y
+//config:      depends on SLEEP
+//config:      help
+//config:      Allow sleep to pause for specified minutes, hours, and days.
+
+/* Do not make this applet NOFORK. It breaks ^C-ing of pauses in shells */
+//applet:IF_SLEEP(APPLET(sleep, BB_DIR_BIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_SLEEP) += sleep.o
+
+/* BB_AUDIT SUSv3 compliant */
+/* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/sleep.html */
 
 //usage:#define sleep_trivial_usage
 //usage:       IF_FEATURE_FANCY_SLEEP("[") "N" IF_FEATURE_FANCY_SLEEP("]...")
@@ -35,92 +59,28 @@
 
 #include "libbb.h"
 
-/* Do not make this applet NOFORK. It breaks ^C-ing of pauses in shells */
-
-
-#if ENABLE_FEATURE_FANCY_SLEEP || ENABLE_FEATURE_FLOAT_SLEEP
-static const struct suffix_mult sfx[] = {
-       { "s", 1 },
-       { "m", 60 },
-       { "h", 60*60 },
-       { "d", 24*60*60 },
-       { "", 0 }
-};
-#endif
-
 int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int sleep_main(int argc UNUSED_PARAM, char **argv)
 {
-#if ENABLE_FEATURE_FLOAT_SLEEP
-       double duration;
-       struct timespec ts;
-#else
-       unsigned duration;
-#endif
+       duration_t duration;
 
        ++argv;
        if (!*argv)
                bb_show_usage();
 
-#if ENABLE_FEATURE_FLOAT_SLEEP
-
-# if ENABLE_LOCALE_SUPPORT
+#if ENABLE_FEATURE_FANCY_SLEEP
+# if ENABLE_FLOAT_DURATION
        /* undo busybox.c setlocale */
        setlocale(LC_NUMERIC, "C");
 # endif
        duration = 0;
        do {
-               char *arg = *argv;
-               if (strchr(arg, '.')) {
-                       double d;
-                       char *pp;
-                       int len = strspn(arg, "0123456789.");
-                       char sv = arg[len];
-                       arg[len] = '\0';
-                       errno = 0;
-                       d = strtod(arg, &pp);
-                       if (errno || *pp)
-                               bb_show_usage();
-                       arg += len;
-                       *arg-- = sv;
-                       sv = *arg;
-                       *arg = '1';
-                       duration += d * xatoul_sfx(arg, sfx);
-                       *arg = sv;
-               } else {
-                       duration += xatoul_sfx(arg, sfx);
-               }
+               duration += parse_duration_str(*argv);
        } while (*++argv);
-
-       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);
-
+       sleep_for_duration(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
-
        return EXIT_SUCCESS;
 }