sleep: make fractional seconds separately selectable in .config

2 files changed, 22 insertions, 7 deletions

diff --git a/coreutils/Config.in b/coreutils/Config.in
index 8d6192586..b01980d9a 100644
--- a/coreutils/Config.in
+++ b/coreutils/Config.in
@@ -509,18 +509,33 @@ config SHA1SUM
           Compute and check SHA1 message digest
 
 config SLEEP
-        bool "sleep (single integer arg with no suffix)"
+        bool "sleep"
         default n
         help
-          sleep is used to pause for a specified number of seconds,
+          sleep is used to pause for a specified number of seconds.
+          It comes in 3 versions:
+          - small: takes one integer parameter
+          - fancy: takes multiple integer arguments with suffixes:
+            sleep 1d 2h 3m 15s
+          - fancy with fractional numbers:
+            sleep 2.3s 4.5h sleeps for 16202.3 seconds
+          Last one is "the most compatible" with coreutils sleep,
+          but it adds around 1k of code.
 
 config FEATURE_FANCY_SLEEP
-        bool "Enable multiple integer args and optional time suffixes"
+        bool "Enable multiple arguments and s/m/h/d suffixes"
         default n
         depends on SLEEP
         help
           Allow sleep to pause for specified minutes, hours, and days.
 
+config FEATURE_FLOAT_SLEEP
+        bool "Enable fractional arguments"
+        default n
+        depends on FEATURE_FANCY_SLEEP
+        help
+          Allow for fractional numeric parameters.
+
 config SORT
         bool "sort"
         default n
@@ -532,7 +547,7 @@ config FEATURE_SORT_BIG
         default y
         depends on SORT
         help
-          Without this, sort only supports  -r, -u, and an integer version
+          Without this, sort only supports -r, -u, and an integer version
           of -n.  Selecting this adds sort keys, floating point support, and
           more.  This adds a little over 3k to a nonstatic build on x86.
 
diff --git a/coreutils/sleep.c b/coreutils/sleep.c
index 93b178d76..de18dd0db 100644
--- a/coreutils/sleep.c
+++ b/coreutils/sleep.c
@@ -23,7 +23,7 @@
 /* This is a NOFORK applet. Be very careful! */
 
 
-#if ENABLE_FEATURE_FANCY_SLEEP
+#if ENABLE_FEATURE_FANCY_SLEEP || ENABLE_FEATURE_FLOAT_SLEEP
 static const struct suffix_mult sfx[] = {
         { "s", 1 },
         { "m", 60 },
@@ -36,7 +36,7 @@ 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
+#if ENABLE_FEATURE_FLOAT_SLEEP
         double duration;
         struct timespec ts;
 #else
@@ -47,7 +47,7 @@ int sleep_main(int argc UNUSED_PARAM, char **argv)
         if (!*argv)
                 bb_show_usage();
 
-#if ENABLE_FEATURE_FANCY_SLEEP && ENABLE_DESKTOP
+#if ENABLE_FEATURE_FLOAT_SLEEP
 
         duration = 0;
         do {