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29 * Grand digital clock for curses compatible terminals
30 * Usage: gdc [-s] [-t hh:mm:ss] [n] -- run for n seconds (default infinity)
33 * modified 10-18-89 for curses (jrl)
34 * 10-18-89 added signal handling
36 * $Id: gdc.c,v 1.42 2014/08/09 22:28:42 tom Exp $
39 #include <test.priv.h>
52 static short disp[11] =
54 075557, 011111, 071747, 071717, 055711,
55 074717, 074757, 071111, 075757, 075717, 002020
57 static long older[6], next[6], newer[6], mask;
59 static int sigtermed = 0;
60 static bool redirected = FALSE;
61 static bool hascolor = FALSE;
66 signal(signo, sighndl);
70 ExitProgram(EXIT_FAILURE);
80 fprintf(stderr, "gdc terminated by signal %d\n", sigtermed);
81 ExitProgram(EXIT_FAILURE);
86 drawbox(bool scrolling)
88 chtype bottom[XLENGTH + 1];
92 (void) attrset(AttrArg(COLOR_PAIR(PAIR_FRAMES), 0));
94 MvAddCh(YBASE - 1, XBASE - 1, ACS_ULCORNER);
95 hline(ACS_HLINE, XLENGTH);
96 MvAddCh(YBASE - 1, XBASE + XLENGTH, ACS_URCORNER);
98 MvAddCh(YBASE + YDEPTH, XBASE - 1, ACS_LLCORNER);
99 if ((mvinchnstr(YBASE + YDEPTH, XBASE, bottom, XLENGTH)) != ERR) {
100 for (n = 0; n < XLENGTH; n++) {
102 bottom[n] &= ~A_COLOR;
103 bottom[n] = ACS_HLINE | (bottom[n] & (A_ATTRIBUTES | A_COLOR));
105 (void) mvaddchnstr(YBASE + YDEPTH, XBASE, bottom, XLENGTH);
107 MvAddCh(YBASE + YDEPTH, XBASE + XLENGTH, ACS_LRCORNER);
109 move(YBASE, XBASE - 1);
110 vline(ACS_VLINE, YDEPTH);
112 move(YBASE, XBASE + XLENGTH);
113 vline(ACS_VLINE, YDEPTH);
116 (void) attrset(AttrArg(COLOR_PAIR(PAIR_OTHERS), 0));
124 attron(COLOR_PAIR(PAIR_DIGITS));
130 attron(COLOR_PAIR(PAIR_OTHERS));
143 for (i = 0; i < 5; i++) {
144 next[i] |= ((disp[t] >> ((4 - i) * 3)) & 07) << n;
145 mask |= (next[i] ^ older[i]) & m;
154 static const char *msg[] =
156 "Usage: gdc [options] [count]"
159 ," -n redirect input to /dev/null"
160 ," -s scroll each number into place, rather than flipping"
161 ," -t hh:mm:ss specify starting time (default is ``now'')"
163 ,"If you specify a count, gdc runs for that number of seconds"
166 for (j = 0; j < SIZEOF(msg); j++)
167 fprintf(stderr, "%s\n", msg[j]);
168 ExitProgram(EXIT_FAILURE);
172 parse_time(const char *value)
180 if (sscanf(value, "%d:%d:%d%c", &hh, &mm, &ss, &c) != 3) {
181 if (sscanf(value, "%02d%02d%02d%c", &hh, &mm, &ss, &c) != 3) {
186 if ((hh < 0) || (hh >= 24) ||
187 (mm < 0) || (mm >= 60) ||
188 (ss < 0) || (ss >= 60)) {
192 /* adjust so that the localtime in the main loop will give usable time */
193 result = (hh * 3600) + ((mm * 60) + ss);
194 for (check = 0; check < 24; ++check) {
195 tm = localtime(&result);
196 if (tm->tm_hour == hh)
201 if (tm->tm_hour != hh) {
202 fprintf(stderr, "Cannot find local time for %s!\n", value);
209 main(int argc, char *argv[])
222 setlocale(LC_ALL, "");
226 while ((k = getopt(argc, argv, "nst:")) != -1) {
229 ifp = fopen("/dev/null", "r");
236 starts = parse_time(optarg);
243 count = atoi(argv[optind++]);
250 char *name = getenv("TERM");
252 || newterm(name, ofp, ifp) == 0) {
253 fprintf(stderr, "cannot open terminal\n");
254 ExitProgram(EXIT_FAILURE);
265 hascolor = has_colors();
268 short bg = COLOR_BLACK;
270 #if HAVE_USE_DEFAULT_COLORS
271 if (use_default_colors() == OK)
274 init_pair(PAIR_DIGITS, COLOR_BLACK, COLOR_RED);
275 init_pair(PAIR_OTHERS, COLOR_RED, bg);
276 init_pair(PAIR_FRAMES, COLOR_WHITE, bg);
277 (void) attrset(AttrArg(COLOR_PAIR(PAIR_OTHERS), 0));
281 for (j = 0; j < 5; j++)
282 older[j] = newer[j] = next[j] = 0;
295 tm = localtime(&now);
298 set(tm->tm_sec % 10, 0);
299 set(tm->tm_sec / 10, 4);
300 set(tm->tm_min % 10, 10);
301 set(tm->tm_min / 10, 14);
302 set(tm->tm_hour % 10, 20);
303 set(tm->tm_hour / 10, 24);
307 for (k = 0; k < 6; k++) {
309 for (i = 0; i < 5; i++)
310 newer[i] = (newer[i] & ~mask) | (newer[i + 1] & mask);
311 newer[5] = (newer[5] & ~mask) | (next[k] & mask);
313 newer[k] = (newer[k] & ~mask) | (next[k] & mask);
316 for (s = 1; s >= 0; s--) {
318 for (i = 0; i < 6; i++) {
319 if ((a = (newer[i] ^ older[i]) & (s ? newer : older)[i])
321 for (j = 0, t = 1 << 26; t; t >>= 1, j++) {
323 if (!(a & (t << 1))) {
324 move(YBASE + i, XBASE + 2 * j);
339 * If we're scrolling, space out the refreshes to fake
340 * movement. That's 7 frames, or 6 intervals, which would
341 * be 166 msec if we spread it out over a second. It looks
342 * better (but will work on a slow terminal, e.g., less
343 * than 9600bd) to squeeze that into a half-second, and use
344 * half of 170 msec to ensure that the program doesn't eat
345 * a lot of time when asking what time it is, at the top of
346 * this loop -T.Dickey
352 switch (wgetch(stdscr)) {
360 nodelay(stdscr, FALSE);
363 nodelay(stdscr, TRUE);
381 /* this depends on the detailed format of ctime(3) */
382 (void) strncpy(buf, ctime(&now), (size_t) 30);
383 (void) strcpy(buf + 10, buf + 19);
384 MvAddStr(16, 30, buf);
391 * If we're not smooth-scrolling, wait 1000 msec (1 sec). Use napms()
392 * rather than sleep() because the latter does odd things on some
393 * systems, e.g., suspending output as well.
401 * This is a safe way to check if we're interrupted - making the signal
402 * handler set a flag that we can check. Since we're running
403 * nodelay(), the wgetch() call returns immediately, and in particular
404 * will return an error if interrupted. This works only if we can
405 * read from the input, of course.
408 switch (wgetch(stdscr)) {
416 nodelay(stdscr, FALSE);
419 nodelay(stdscr, TRUE);
435 ExitProgram(EXIT_SUCCESS);