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/*
* Grand digital clock for curses compatible terminals
* Usage: grdc [-st] [n] -- run for n seconds (default infinity)
* Flags: -s: scroll
* -t: output time in 12-hour format
*
*
* modified 10-18-89 for curses (jrl)
* 10-18-89 added signal handling
*
* modified 03-25-03 for 12 hour option
* - Samy Al Bahra <samy@kerneled.com>
*
* $FreeBSD$
*/
#include <err.h>
#include <time.h>
#include <signal.h>
#include <ncurses.h>
#include <stdlib.h>
#ifndef NONPOSIX
#include <unistd.h>
#endif
#define YBASE 10
#define XBASE 10
#define XLENGTH 58
#define YDEPTH 7
/* it won't be */
time_t now; /* yeah! */
struct tm *tm;
short disp[11] = {
075557, 011111, 071747, 071717, 055711,
074717, 074757, 071111, 075757, 075717, 002020
};
long old[6], next[6], new[6], mask;
volatile sig_atomic_t sigtermed;
int hascolor = 0;
void set(int, int);
void standt(int);
void movto(int, int);
void sighndl(int);
void usage(void);
void sighndl(signo)
int signo;
{
sigtermed=signo;
}
int
main(argc, argv)
int argc;
char **argv;
{
long t, a;
int i, j, s, k;
int n;
int ch;
int scrol;
int t12;
t12 = scrol = 0;
while ((ch = getopt(argc, argv, "ts")) != -1)
switch (ch) {
case 's':
scrol = 1;
break;
case 't':
t12 = 1;
break;
case '?':
default:
usage();
/* NOTREACHED */
}
argc -= optind;
argv += optind;
if (argc > 1) {
usage();
/* NOTREACHED */
}
if (argc > 0)
n = atoi(*argv);
else
n = 0;
initscr();
signal(SIGINT,sighndl);
signal(SIGTERM,sighndl);
signal(SIGHUP,sighndl);
cbreak();
noecho();
curs_set(0);
hascolor = has_colors();
if(hascolor) {
start_color();
init_pair(1, COLOR_BLACK, COLOR_RED);
init_pair(2, COLOR_RED, COLOR_BLACK);
init_pair(3, COLOR_WHITE, COLOR_BLACK);
attrset(COLOR_PAIR(2));
}
clear();
refresh();
if(hascolor) {
attrset(COLOR_PAIR(3));
mvaddch(YBASE - 2, XBASE - 3, ACS_ULCORNER);
hline(ACS_HLINE, XLENGTH);
mvaddch(YBASE - 2, XBASE - 2 + XLENGTH, ACS_URCORNER);
mvaddch(YBASE + YDEPTH - 1, XBASE - 3, ACS_LLCORNER);
hline(ACS_HLINE, XLENGTH);
mvaddch(YBASE + YDEPTH - 1, XBASE - 2 + XLENGTH, ACS_LRCORNER);
move(YBASE - 1, XBASE - 3);
vline(ACS_VLINE, YDEPTH);
move(YBASE - 1, XBASE - 2 + XLENGTH);
vline(ACS_VLINE, YDEPTH);
attrset(COLOR_PAIR(2));
}
do {
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);
if (t12) {
if (tm->tm_hour > 12) {
tm->tm_hour -= 12;
mvaddstr(YBASE + 5, XBASE + 52, "PM");
} else
mvaddstr(YBASE + 5, XBASE + 52, "AM");
}
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++)
new[i] = (new[i]&~mask) | (new[i+1]&mask);
new[5] = (new[5]&~mask) | (next[k]&mask);
} else
new[k] = (new[k]&~mask) | (next[k]&mask);
next[k] = 0;
for(s=1; s>=0; s--) {
standt(s);
for(i=0; i<6; i++) {
if((a = (new[i]^old[i])&(s ? new : old)[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) {
old[i] = new[i];
}
}
if(!s) {
refresh();
}
}
}
movto(6, 0);
refresh();
sleep(1);
if (sigtermed) {
standend();
clear();
refresh();
endwin();
errx(1, "terminated by signal %d", (int)sigtermed);
}
} while(--n);
standend();
clear();
refresh();
endwin();
return(0);
}
void
set(int t, int n)
{
int i, m;
m = 7<<n;
for(i=0; i<5; i++) {
next[i] |= ((disp[t]>>(4-i)*3)&07)<<n;
mask |= (next[i]^old[i])&m;
}
if(mask&m)
mask |= m;
}
void
standt(int on)
{
if (on) {
if(hascolor) {
attron(COLOR_PAIR(1));
} else {
attron(A_STANDOUT);
}
} else {
if(hascolor) {
attron(COLOR_PAIR(2));
} else {
attroff(A_STANDOUT);
}
}
}
void
movto(int line, int col)
{
move(line, col);
}
void
usage(void)
{
(void)fprintf(stderr, "usage: grdc [-st] [n]\n");
exit(1);
}
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