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Add ability to specify watch interval using environment variable WATCH_INTERVAL

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Harry Wagstaff 2018-04-23 11:34:08 +01:00 committed by Craig Small
parent 48a201c46f
commit f0a3cd4b1f
1 changed files with 10 additions and 4 deletions
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14
watch.c
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@ -671,6 +671,7 @@ int main(int argc, char *argv[])
{ {
int optc; int optc;
double interval = 2; double interval = 2;
char *interval_string;
char *command; char *command;
char **command_argv; char **command_argv;
int command_length = 0; /* not including final \0 */ int command_length = 0; /* not including final \0 */
@ -704,6 +705,10 @@ int main(int argc, char *argv[])
textdomain(PACKAGE); textdomain(PACKAGE);
atexit(close_stdout); atexit(close_stdout);
interval_string = getenv("WATCH_INTERVAL");
if(interval_string != NULL)
interval = strtod_nol_or_err(interval_string, _("Could not parse interval from WATCH_INTERVAL"));
while ((optc = while ((optc =
getopt_long(argc, argv, "+bced::ghn:pvtx", longopts, (int *)0)) getopt_long(argc, argv, "+bced::ghn:pvtx", longopts, (int *)0))
!= EOF) { != EOF) {
@ -733,10 +738,6 @@ int main(int argc, char *argv[])
break; break;
case 'n': case 'n':
interval = strtod_nol_or_err(optarg, _("failed to parse argument")); interval = strtod_nol_or_err(optarg, _("failed to parse argument"));
if (interval < 0.1)
interval = 0.1;
if (interval > UINT_MAX)
interval = UINT_MAX;
break; break;
case 'p': case 'p':
precise_timekeeping = 1; precise_timekeeping = 1;
@ -753,6 +754,11 @@ int main(int argc, char *argv[])
} }
} }
if (interval < 0.1)
interval = 0.1;
if (interval > UINT_MAX)
interval = UINT_MAX;
if (optind >= argc) if (optind >= argc)
usage(stderr); usage(stderr);