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/* Copyright (C) 2020 C. McEnroe <june@causal.agency>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <termios.h>
#include <unistd.h>
static int shake = 10;
static int delay = 20000;
static int count = 2;
static void move(int tty, int x, int y) {
dprintf(tty, "\33[3;%d;%dt", x, y);
usleep(delay);
}
int main(int argc, char *argv[]) {
const char *path = "/dev/tty";
for (int opt; 0 < (opt = getopt(argc, argv, "f:n:s:t:"));) {
switch (opt) {
break; case 'f': path = optarg;
break; case 'n': count = atoi(optarg);
break; case 's': shake = atoi(optarg);
break; case 't': delay = atoi(optarg) * 1000;
break; default: return EX_USAGE;
}
}
int tty = open(path, O_RDWR);
if (tty < 0) err(EX_OSFILE, "%s", path);
struct termios save;
int error = tcgetattr(tty, &save);
if (error) err(EX_IOERR, "tcgetattr");
struct termios raw = save;
cfmakeraw(&raw);
error = tcsetattr(tty, TCSAFLUSH, &raw);
if (error) err(EX_IOERR, "tcsetattr");
char buf[256];
dprintf(tty, "\33[13t");
ssize_t len = read(tty, buf, sizeof(buf) - 1);
buf[(len < 0 ? 0 : len)] = '\0';
int x, y;
int n = sscanf(buf, "\33[3;%d;%dt", &x, &y);
error = tcsetattr(tty, TCSANOW, &save);
if (error) err(EX_IOERR, "tcsetattr");
if (n < 2) return EX_CONFIG;
dprintf(tty, "\33[5t");
for (int i = 0; i < count; ++i) {
move(tty, x - shake, y);
move(tty, x, y + shake);
move(tty, x + shake, y);
move(tty, x, y - shake);
move(tty, x, y);
}
}
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