* modified 10-18-89 for curses (jrl)
* 10-18-89 added signal handling
*
- * $Id: gdc.c,v 1.10 1997/10/18 20:06:06 tom Exp $
+ * $Id: gdc.c,v 1.14 2000/04/23 00:03:11 tom Exp $
*/
#include <test.priv.h>
#define XLENGTH 54
#define YDEPTH 5
-/* it won't be */
-static time_t now; /* yeah! */
-static struct tm *tm;
-
-static short disp[11] = {
- 075557, 011111, 071747, 071717, 055711,
- 074717, 074757, 071111, 075757, 075717, 002020
+static short disp[11] =
+{
+ 075557, 011111, 071747, 071717, 055711,
+ 074717, 074757, 071111, 075757, 075717, 002020
};
static long older[6], next[6], newer[6], mask;
-static char scrol;
static int sigtermed = 0;
+static bool redirected = FALSE;
+static bool hascolor = FALSE;
-static int hascolor = 0;
-
-static void set(int, int);
-static void standt(int);
-static void movto(int, int);
-
-static
-RETSIGTYPE sighndl(int signo)
+static RETSIGTYPE
+sighndl(int signo)
{
- signal(signo, sighndl);
- sigtermed=signo;
+ signal(signo, sighndl);
+ sigtermed = signo;
+ if (redirected) {
+ endwin();
+ exit(EXIT_FAILURE);
+ }
}
static void
drawbox(void)
{
- chtype bottom[XLENGTH+1];
- int n;
+ chtype bottom[XLENGTH + 1];
+ int n;
- if(hascolor)
- attrset(COLOR_PAIR(3));
+ if (hascolor)
+ attrset(COLOR_PAIR(3));
- mvaddch(YBASE - 1, XBASE - 1, ACS_ULCORNER);
- hline(ACS_HLINE, XLENGTH);
- mvaddch(YBASE - 1, XBASE + XLENGTH, ACS_URCORNER);
+ mvaddch(YBASE - 1, XBASE - 1, ACS_ULCORNER);
+ hline(ACS_HLINE, XLENGTH);
+ mvaddch(YBASE - 1, XBASE + XLENGTH, ACS_URCORNER);
- mvaddch(YBASE + YDEPTH, XBASE - 1, ACS_LLCORNER);
- mvinchnstr(YBASE + YDEPTH, XBASE, bottom, XLENGTH);
- for (n = 0; n < XLENGTH; n++)
- bottom[n] = ACS_HLINE | (bottom[n] & (A_ATTRIBUTES | A_COLOR));
- mvaddchnstr(YBASE + YDEPTH, XBASE, bottom, XLENGTH);
- mvaddch(YBASE + YDEPTH, XBASE + XLENGTH, ACS_LRCORNER);
+ mvaddch(YBASE + YDEPTH, XBASE - 1, ACS_LLCORNER);
+ mvinchnstr(YBASE + YDEPTH, XBASE, bottom, XLENGTH);
+ for (n = 0; n < XLENGTH; n++)
+ bottom[n] = ACS_HLINE | (bottom[n] & (A_ATTRIBUTES | A_COLOR));
+ mvaddchnstr(YBASE + YDEPTH, XBASE, bottom, XLENGTH);
+ mvaddch(YBASE + YDEPTH, XBASE + XLENGTH, ACS_LRCORNER);
- move(YBASE, XBASE - 1);
- vline(ACS_VLINE, YDEPTH);
+ move(YBASE, XBASE - 1);
+ vline(ACS_VLINE, YDEPTH);
- move(YBASE, XBASE + XLENGTH);
- vline(ACS_VLINE, YDEPTH);
+ move(YBASE, XBASE + XLENGTH);
+ vline(ACS_VLINE, YDEPTH);
- if(hascolor)
- attrset(COLOR_PAIR(2));
+ if (hascolor)
+ attrset(COLOR_PAIR(2));
}
-int
-main(int argc, char *argv[])
+static void
+standt(int on)
{
-long t, a;
-int i, j, s, k;
-int n = 0;
-
- signal(SIGINT,sighndl);
- signal(SIGTERM,sighndl);
- signal(SIGKILL,sighndl);
-
- initscr();
- cbreak();
- noecho();
- nodelay(stdscr, 1);
- curs_set(0);
-
- hascolor = has_colors();
-
- if(hascolor) {
- int bg = COLOR_BLACK;
- start_color();
-#ifdef NCURSES_VERSION
- if (use_default_colors() == OK)
- bg = -1;
-#endif
- init_pair(1, COLOR_BLACK, COLOR_RED);
- init_pair(2, COLOR_RED, bg);
- init_pair(3, COLOR_WHITE, bg);
- attrset(COLOR_PAIR(2));
+ if (on) {
+ if (hascolor) {
+ attron(COLOR_PAIR(1));
+ } else {
+ attron(A_STANDOUT);
}
-
- clear();
- refresh();
- while(--argc > 0) {
- if(**++argv == '-')
- scrol = 1;
- else
- n = atoi(*argv);
+ } else {
+ if (hascolor) {
+ attron(COLOR_PAIR(2));
+ } else {
+ attroff(A_STANDOUT);
}
-
- drawbox();
- do {
- char buf[30];
-
- mask = 0;
- time(&now);
- tm = localtime(&now);
- set(tm->tm_sec%10, 0);
- set(tm->tm_sec/10, 4);
- set(tm->tm_min%10, 10);
- set(tm->tm_min/10, 14);
- set(tm->tm_hour%10, 20);
- set(tm->tm_hour/10, 24);
- set(10, 7);
- set(10, 17);
- for(k=0; k<6; k++) {
- if(scrol) {
- for(i=0; i<5; i++)
- newer[i] = (newer[i]&~mask) | (newer[i+1]&mask);
- newer[5] = (newer[5]&~mask) | (next[k]&mask);
- } else
- newer[k] = (newer[k]&~mask) | (next[k]&mask);
- next[k] = 0;
- for(s=1; s>=0; s--) {
- standt(s);
- for(i=0; i<6; i++) {
- if((a = (newer[i]^older[i])&(s ? newer : older)[i]) != 0) {
- for(j=0,t=1<<26; t; t>>=1,j++) {
- if(a&t) {
- if(!(a&(t<<1))) {
- movto(YBASE + i, XBASE + 2*j);
- }
- addstr(" ");
- }
- }
- }
- if(!s) {
- older[i] = newer[i];
- }
- }
- if(!s) {
- if (scrol)
- drawbox();
- refresh();
- if (scrol)
- napms(150);
- }
- }
- }
-
- /* this depends on the detailed format of ctime(3) */
- (void) strcpy(buf, ctime(&now));
- (void) strcpy(buf + 10, buf + 19);
- mvaddstr(16, 30, buf);
-
- movto(6, 0);
- drawbox();
- refresh();
- sleep(1);
- while(wgetch(stdscr) != ERR)
- continue;
- if (sigtermed) {
- standend();
- clear();
- refresh();
- curs_set(1);
- endwin();
- fprintf(stderr, "gdc terminated by signal %d\n", sigtermed);
- return EXIT_FAILURE;
- }
- } while(--n);
- standend();
- clear();
- refresh();
- curs_set(1);
- endwin();
- return EXIT_SUCCESS;
+ }
}
static void
set(int t, int n)
{
-int i, m;
+ int i, m;
- m = 7<<n;
- for(i=0; i<5; i++) {
- next[i] |= ((disp[t]>>(4-i)*3)&07)<<n;
- mask |= (next[i]^older[i])&m;
- }
- if(mask&m)
- mask |= m;
+ m = 7 << n;
+ for (i = 0; i < 5; i++) {
+ next[i] |= ((disp[t] >> (4 - i) * 3) & 07) << n;
+ mask |= (next[i] ^ older[i]) & m;
+ }
+ if (mask & m)
+ mask |= m;
}
static void
-standt(int on)
+usage(void)
{
- if (on) {
- if(hascolor) {
- attron(COLOR_PAIR(1));
- } else {
- attron(A_STANDOUT);
+ static const char *msg[] =
+ {
+ "Usage: gdc [options] [count]"
+ ,""
+ ,"Options:"
+ ," -n redirect input to /dev/null"
+ ," -s scroll each number into place, rather than flipping"
+ ,""
+ ,"If you specify a count, gdc runs for that number of seconds"
+ };
+ unsigned j;
+ for (j = 0; j < SIZEOF(msg); j++)
+ fprintf(stderr, "%s\n", msg[j]);
+ exit(EXIT_FAILURE);
+}
+
+int
+main(int argc, char *argv[])
+{
+ time_t now;
+ struct tm *tm;
+ long t, a;
+ int i, j, s, k;
+ int count = 0;
+ FILE *ofp = stdout;
+ FILE *ifp = stdin;
+ bool scrol = FALSE;
+
+ signal(SIGINT, sighndl);
+ signal(SIGTERM, sighndl);
+ signal(SIGKILL, sighndl);
+
+ while ((k = getopt(argc, argv, "sn")) != EOF) {
+ switch (k) {
+ case 's':
+ scrol = TRUE;
+ break;
+ case 'n':
+ ifp = fopen("/dev/null", "r");
+ redirected = TRUE;
+ break;
+ default:
+ usage();
+ }
+ }
+ if (optind < argc) {
+ count = atoi(argv[optind++]);
+ }
+ if (optind < argc)
+ usage();
+
+ if (redirected) {
+ char *name = getenv("TERM");
+ if (name == 0
+ || newterm(name, ofp, ifp) == 0) {
+ fprintf(stderr, "cannot open terminal\n");
+ exit(EXIT_FAILURE);
+ }
+
+ } else {
+ initscr();
+ }
+ cbreak();
+ noecho();
+ nodelay(stdscr, 1);
+ curs_set(0);
+
+ hascolor = has_colors();
+
+ if (hascolor) {
+ int bg = COLOR_BLACK;
+ start_color();
+#ifdef HAVE_USE_DEFAULT_COLORS
+ if (use_default_colors() == OK)
+ bg = -1;
+#endif
+ init_pair(1, COLOR_BLACK, COLOR_RED);
+ init_pair(2, COLOR_RED, bg);
+ init_pair(3, COLOR_WHITE, bg);
+ attrset(COLOR_PAIR(2));
+ }
+
+ restart:
+ for (j = 0; j < 5; j++)
+ older[j] = newer[j] = next[j] = 0;
+
+ clear();
+ drawbox();
+
+ do {
+ char buf[30];
+
+ time(&now);
+ tm = localtime(&now);
+
+ mask = 0;
+ set(tm->tm_sec % 10, 0);
+ set(tm->tm_sec / 10, 4);
+ set(tm->tm_min % 10, 10);
+ set(tm->tm_min / 10, 14);
+ set(tm->tm_hour % 10, 20);
+ set(tm->tm_hour / 10, 24);
+ set(10, 7);
+ set(10, 17);
+
+ for (k = 0; k < 6; k++) {
+ if (scrol) {
+ for (i = 0; i < 5; i++)
+ newer[i] = (newer[i] & ~mask) | (newer[i + 1] & mask);
+ newer[5] = (newer[5] & ~mask) | (next[k] & mask);
+ } else
+ newer[k] = (newer[k] & ~mask) | (next[k] & mask);
+ next[k] = 0;
+ for (s = 1; s >= 0; s--) {
+ standt(s);
+ for (i = 0; i < 6; i++) {
+ if ((a = (newer[i] ^ older[i]) & (s ? newer : older)[i])
+ != 0) {
+ for (j = 0, t = 1 << 26; t; t >>= 1, j++) {
+ if (a & t) {
+ if (!(a & (t << 1))) {
+ move(YBASE + i, XBASE + 2 * j);
+ }
+ addstr(" ");
+ }
+ }
+ }
+ if (!s) {
+ older[i] = newer[i];
+ }
}
- } else {
- if(hascolor) {
- attron(COLOR_PAIR(2));
- } else {
- attroff(A_STANDOUT);
+ if (!s) {
+ if (scrol)
+ drawbox();
+ refresh();
+ /*
+ * If we're scrolling, space out the refreshes to fake
+ * movement. That's 7 frames, or 6 intervals, which would
+ * be 166 msec if we spread it out over a second. It looks
+ * better (but will well on a slow terminal, e.g., less
+ * than 9600bd) to squeeze that into a half-second, and use
+ * half of 170 msec to ensure that the program doesn't eat
+ * a lot of time when asking what time it is, at the top of
+ * this loop -TD
+ */
+ if (scrol)
+ napms(85);
}
+ }
}
-}
-static void
-movto(int line, int col)
-{
- move(line, col);
+ /* this depends on the detailed format of ctime(3) */
+ (void) strcpy(buf, ctime(&now));
+ (void) strcpy(buf + 10, buf + 19);
+ mvaddstr(16, 30, buf);
+
+ move(6, 0);
+ drawbox();
+ refresh();
+
+ /*
+ * If we're not scrolling, wait 1000 msec (1 sec). Use napms() rather
+ * than sleep() because the latter does odd things on some systems,
+ * e.g., suspending output as well.
+ */
+ if (scrol)
+ napms(500);
+ else
+ napms(1000);
+
+ /*
+ * This is a safe way to check if we're interrupted - making the signal
+ * handler set a flag that we can check. Since we're running
+ * nodelay(), the wgetch() call returns immediately, and in particular
+ * will return an error if interrupted. This works only if we can
+ * read from the input, of course.
+ */
+ switch (wgetch(stdscr)) {
+ case 'q':
+ count = 1;
+ break;
+ case 's':
+ nodelay(stdscr, FALSE);
+ break;
+ case ' ':
+ nodelay(stdscr, TRUE);
+ break;
+#ifdef KEY_RESIZE
+ case KEY_RESIZE:
+#endif
+ case '?':
+ goto restart;
+ case ERR:
+ if (sigtermed) {
+ standend();
+ endwin();
+ fprintf(stderr, "gdc terminated by signal %d\n", sigtermed);
+ return EXIT_FAILURE;
+ }
+ default:
+ continue;
+ }
+ } while (--count);
+ standend();
+ endwin();
+ return EXIT_SUCCESS;
}
projects / ncurses.git / blobdiff