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/* See LICENSE file for copyright and license details. */
#include "common.h"
USAGE("[-2]");
static volatile sig_atomic_t caught_sigterm = 0;
static volatile sig_atomic_t caught_sigio = 0;
static struct itimerspec orig_time;
static int quadsize = 0;
static void
sigterm(int signo)
{
caught_sigterm = 1;
(void) signo;
}
static void
sigio(int signo)
{
caught_sigio = 1;
(void) signo;
}
static int
display_stopwatch(int timerfd)
{
uint64_t overrun = 0;
uintmax_t total_overrun = 0, h, m, s, d, first_overrun = 0;
int paused = 0, have_first = 0;
struct itimerspec old_time, zero_time;
size_t lap = 1;
ssize_t r;
char c;
memset(&zero_time, 0, sizeof(zero_time));
while (!caught_sigterm) {
if (caught_sigio) {
caught_sigio = 0;
for (;;) {
r = read(STDIN_FILENO, &c, 1);
if (r <= 0) {
if (!r)
goto out;
if (errno == EAGAIN)
break;
if (errno == EINTR)
continue;
goto fail;
}
if (c == 'q') {
goto out;
} else if (c == ' ' || c == 'p') {
paused ^= 1;
if (paused) {
if (timerfd_settime(timerfd, 0, &zero_time, &old_time))
goto fail;
} else {
if (timerfd_settime(timerfd, 0, &old_time, NULL))
goto fail;
}
} else if (c == '\n') {
if (timerfd_settime(timerfd, 0, &orig_time, NULL))
goto fail;
d = total_overrun % 10;
s = total_overrun / 10 % 60;
m = total_overrun / 10 / 60 % 60;
h = total_overrun / 10 / 60 / 60;
if (quadsize)
printf("\033#5");
printf("Lap %2zu: %ju:%02ju:%02ju.%ju", lap, h, m, s, d);
lap++;
if (!have_first) {
have_first = 1;
first_overrun = total_overrun;
} else if (total_overrun > first_overrun) {
total_overrun = total_overrun - first_overrun;
d = total_overrun % 10;
s = total_overrun / 10 % 60;
m = total_overrun / 10 / 60 % 60;
h = total_overrun / 10 / 60 / 60;
printf(" \033[31m(+%ju:%02ju:%02ju.%ju)\033[m", h, m, s, d);
} else if (total_overrun < first_overrun) {
total_overrun = first_overrun - total_overrun;
d = total_overrun % 10;
s = total_overrun / 10 % 60;
m = total_overrun / 10 / 60 % 60;
h = total_overrun / 10 / 60 / 60;
printf(" \033[34m(-%ju:%02ju:%02ju.%ju)\033[m", h, m, s, d);
}
printf("\033[K\n");
total_overrun = 0;
}
}
}
d = total_overrun % 10;
s = total_overrun / 10 % 60;
m = total_overrun / 10 / 60 % 60;
h = total_overrun / 10 / 60 / 60;
if (!paused) {
if (quadsize) {
printf("\033""7\033#3%ju:%02ju:%02ju.%ju\033[K\n", h, m, s, d);
printf("\033#4%ju:%02ju:%02ju.%ju\033[K\033""8", h, m, s, d);
} else {
printf("\033""7%ju:%02ju:%02ju.%ju\033[K\033""8", h, m, s, d);
}
fflush(stdout);
} else {
if (quadsize) {
printf("\033""7\033#3\033[33m%ju:%02ju:%02ju.%ju (paused)\033[m\033[K\n", h, m, s, d);
printf("\033#4\033[33m%ju:%02ju:%02ju.%ju (paused)\033[m\033[K\033""8", h, m, s, d);
} else {
printf("\033""7\033[33m%ju:%02ju:%02ju.%ju (paused)\033[m\033[K\033""8", h, m, s, d);
}
fflush(stdout);
pause();
continue;
}
if (read(timerfd, &overrun, sizeof(overrun)) < 0) {
if (errno != EINTR)
goto fail;
} else {
total_overrun += (uintmax_t)overrun;
}
}
out:
return 0;
fail:
return -1;
}
int
main(int argc, char *argv[])
{
int timerfd = -1, old_flags = -1, tcset = 0, old_sig = 0;
struct sigaction sigact;
int64_t owner_set = 0;
struct f_owner_ex old_owner, new_owner;
struct termios stty, saved_stty;
ARGBEGIN {
case '2':
quadsize = 1;
break;
default:
usage();
} ARGEND;
if (argc)
usage();
printf("\033[?25l\033[m");
orig_time.it_interval.tv_sec = 0;
orig_time.it_interval.tv_nsec = 100000000L;
orig_time.it_value.tv_sec = 0;
orig_time.it_value.tv_nsec = 100000000L;
timerfd = timerfd_create(CLOCK_BOOTTIME, 0);
if (timerfd < 0)
goto fail;
if (timerfd_settime(timerfd, 0, &orig_time, NULL))
goto fail;
memset(&sigact, 0, sizeof(sigact));
sigact.sa_handler = sigterm;
sigaction(SIGTERM, &sigact, NULL);
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGINT, &sigact, NULL);
sigact.sa_handler = sigio;
sigaction(SIGIO, &sigact, NULL);
sigaction(SIGURG, &sigact, NULL);
if (fcntl(STDIN_FILENO, F_GETOWN_EX, &old_owner))
goto fail;
memset(&new_owner, 0, sizeof(new_owner));
new_owner.type = F_OWNER_PID;
new_owner.pid = getpid();
if (fcntl(STDIN_FILENO, F_SETOWN_EX, &new_owner))
goto fail;
owner_set = 1;
old_flags = fcntl(STDIN_FILENO, F_GETFL);
fcntl(STDIN_FILENO, F_SETFL, old_flags | FASYNC | O_NONBLOCK);
fcntl(STDIN_FILENO, F_GETSIG, &old_sig);
if (old_sig)
fcntl(STDIN_FILENO, F_SETSIG, 0);
if (!tcgetattr(STDIN_FILENO, &stty)) {
saved_stty = stty;
stty.c_lflag &= (tcflag_t)~(ECHO | ICANON);
tcsetattr(STDIN_FILENO, TCSAFLUSH, &stty);
tcset = 1;
}
if (display_stopwatch(timerfd))
goto fail;
if (quadsize)
printf("\n\n\033#5\033[?25h");
else
printf("\033[?25h\n");
fflush(stdout);
fcntl(STDIN_FILENO, F_SETOWN_EX, &old_owner);
fcntl(STDIN_FILENO, F_SETFL, old_flags);
fcntl(STDIN_FILENO, F_SETSIG, old_sig);
tcsetattr(STDIN_FILENO, TCSAFLUSH, &saved_stty);
close(timerfd);
return 0;
fail:
printf("\033[?25h\n");
perror(argv0 ? argv0 : "stopwatch");
fflush(stdout);
if (owner_set)
fcntl(STDIN_FILENO, F_SETOWN_EX, &old_owner);
if (old_flags != -1)
fcntl(STDIN_FILENO, F_SETFL, old_flags);
if (old_sig)
fcntl(STDIN_FILENO, F_SETSIG, old_sig);
if (tcset)
tcsetattr(STDIN_FILENO, TCSAFLUSH, &saved_stty);
if (timerfd >= 0)
close(timerfd);
return 1;
}
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