diff options
Diffstat (limited to 'bin/nudge.c')
-rw-r--r-- | bin/nudge.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/bin/nudge.c b/bin/nudge.c new file mode 100644 index 00000000..8ae916eb --- /dev/null +++ b/bin/nudge.c @@ -0,0 +1,78 @@ +/* Copyright (C) 2020 June 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); + } +} |