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/* See LICENSE file for copyright and license details. */
#include <sys/ioctl.h>
#include <sys/timerfd.h>
#include <errno.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#ifdef USE_ADJTIMEX
# include <sys/timex.h>
#endif
#include "arg.h"
#define DX 16
#define DY 12
#define DC 16
#include "mongo_0.h"
#include "mongo_1.h"
#include "mongo_2.h"
#include "mongo_3.h"
#include "mongo_4.h"
#include "mongo_5.h"
#include "mongo_6.h"
#include "mongo_7.h"
#include "mongo_8.h"
#include "mongo_9.h"
#include "mongo_c.h"
static const char **mongo_ds[] = {
mongo_0, mongo_1, mongo_2, mongo_3, mongo_4,
mongo_5, mongo_6, mongo_7, mongo_8, mongo_9
};
static volatile sig_atomic_t caught_sigterm = 0;
static volatile sig_atomic_t caught_sigwinch = 1;
char *argv0;
static void
usage(void)
{
fprintf(stderr, "usage: %s\n", argv0);
exit(1);
}
static void
sigterm(int signo)
{
caught_sigterm = 1;
(void) signo;
}
static void
sigwinch(int signo)
{
caught_sigwinch = 1;
(void) signo;
}
static void
print_time(const char ***str, size_t y, size_t x)
{
size_t r, c;
fprintf(stdout, "\033[%zu;1H\033[1J", y + 1);
for (r = 0; r < DY; r++) {
fprintf(stdout, "\033[%zu;%zuH\033[1K", y + r + 1, x + 1);
for (c = 0; str[c]; c++)
fprintf(stdout, "%s", str[c][r]);
fprintf(stdout, "\033[0K");
}
fprintf(stdout, "\033[0J");
fflush(stdout);
}
int
main(int argc, char *argv[])
{
struct tm *now;
const char **digits[9];
size_t x = 0, y = 0;
struct winsize winsize;
int small = 0;
int fd = -1;
struct itimerspec itimerspec;
uint64_t _overrun;
struct sigaction sigact;
#ifdef USE_ADJTIMEX
struct timex timex;
int r;
#else
time_t now_;
#endif
ARGBEGIN {
default:
usage();
} ARGEND;
if (argc)
usage();
fprintf(stdout, "\033[?1049h\033[?25l");
if (clock_gettime(CLOCK_REALTIME, &itimerspec.it_value))
goto fail;
itimerspec.it_interval.tv_sec = 1;
itimerspec.it_interval.tv_nsec = 0;
itimerspec.it_value.tv_sec += 1;
itimerspec.it_value.tv_nsec = 0;
fd = timerfd_create(CLOCK_REALTIME, 0);
if (fd < 0)
goto fail;
if (timerfd_settime(fd, TFD_TIMER_ABSTIME, &itimerspec, 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 = sigwinch;
sigaction(SIGWINCH, &sigact, NULL);
#ifdef USE_ADJTIMEX
memset(&timex, 0, sizeof(timex));
#endif
while (!caught_sigterm) {
if (caught_sigwinch) {
if (ioctl(STDOUT_FILENO, (unsigned long)TIOCGWINSZ, &winsize) < 0) {
if (errno == EINTR)
continue;
goto fail;
}
caught_sigwinch = 0;
y = winsize.ws_row;
x = winsize.ws_col;
if (y < DY) small = 2;
else if (x < 4 * DX + DC) small = 2;
else if (x < 6 * DX + 2 * DC) small = 1;
else small = 0;
y -= DY;
x -= 4 * DX + DC;
if (!small)
x -= 2 * DX + DC;
y /= 2;
x /= 2;
}
if (small == 2) {
fprintf(stdout, "\033[H\033[2J%s\n", "Screen is too small");
fflush(stdout);
pause();
continue;
}
#ifdef USE_ADJTIMEX
r = adjtimex(&timex);
if (r == -1)
goto fail;
now = localtime(&timex.time.tv_sec);
if (now == NULL)
goto fail;
if (r == TIME_OOP)
now->tm_sec += 1;
#else
now_ = time(NULL);
if (now_ == -1)
goto fail;
now = localtime(&now_);
if (now == NULL)
goto fail;
#endif
digits[0] = mongo_ds[now->tm_hour / 10];
digits[1] = mongo_ds[now->tm_hour % 10];
digits[2] = mongo_c;
digits[3] = mongo_ds[now->tm_min / 10];
digits[4] = mongo_ds[now->tm_min % 10];
digits[5] = small ? NULL : mongo_c;
digits[6] = mongo_ds[now->tm_sec / 10];
digits[7] = mongo_ds[now->tm_sec % 10];
digits[8] = NULL;
print_time(digits, y, x);
if (read(fd, &_overrun, sizeof(_overrun)) < 0)
if (errno != EINTR)
goto fail;
}
fprintf(stdout, "\033[?25h\n\033[?1049l");
fflush(stdout);
close(fd);
return 0;
fail:
perror(argc ? *argv : "mongoclock");
fprintf(stdout, "\033[?25h\n\033[?1049l");
fflush(stdout);
if (fd >= 0)
close(fd);
return 1;
}
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