diff options
| -rw-r--r-- | bin/man1/nudge.1 | 6 | ||||
| -rw-r--r-- | bin/nudge.c | 38 |
2 files changed, 30 insertions, 14 deletions
diff --git a/bin/man1/nudge.1 b/bin/man1/nudge.1 index 143a24ba..3ca4294a 100644 --- a/bin/man1/nudge.1 +++ b/bin/man1/nudge.1 @@ -8,6 +8,7 @@ . .Sh SYNOPSIS .Nm +.Op Fl f Ar file .Op Fl n Ar count .Op Fl s Ar shake .Op Fl t Ar delay @@ -24,6 +25,11 @@ compatible terminal is required. .Pp The arguments are as follows: .Bl -tag -width Ds +.It Fl f Ar file +Open the terminal named by +.Ar file . +The default is +.Pa /dev/tty . .It Fl n Ar count Set the number of times to nudge the terminal. diff --git a/bin/nudge.c b/bin/nudge.c index da406acc..108d2459 100644 --- a/bin/nudge.c +++ b/bin/nudge.c @@ -15,6 +15,7 @@ */ #include <err.h> +#include <fcntl.h> #include <stdio.h> #include <stdlib.h> #include <sysexits.h> @@ -25,14 +26,16 @@ static int shake = 10; static int delay = 20000; static int count = 2; -static void move(int x, int y) { - fprintf(stderr, "\33[3;%d;%dt", x, y); +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[]) { - for (int opt; 0 < (opt = getopt(argc, argv, "n:s:t:"));) { + 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; @@ -40,29 +43,36 @@ int main(int argc, char *argv[]) { } } + int tty = open(path, O_RDWR); + if (tty < 0) err(EX_OSFILE, "%s", path); + struct termios save; - int error = tcgetattr(STDIN_FILENO, &save); + int error = tcgetattr(tty, &save); if (error) err(EX_IOERR, "tcgetattr"); struct termios raw = save; cfmakeraw(&raw); - error = tcsetattr(STDIN_FILENO, TCSAFLUSH, &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; - fprintf(stderr, "\33[13t"); - int n = scanf("\33[3;%d;%dt", &x, &y); + int n = sscanf(buf, "\33[3;%d;%dt", &x, &y); - error = tcsetattr(STDIN_FILENO, TCSANOW, &save); + error = tcsetattr(tty, TCSANOW, &save); if (error) err(EX_IOERR, "tcsetattr"); if (n < 2) return EX_CONFIG; - fprintf(stderr, "\33[5t"); + dprintf(tty, "\33[5t"); for (int i = 0; i < count; ++i) { - move(x - shake, y); - move(x, y + shake); - move(x + shake, y); - move(x, y - shake); - move(x, y); + move(tty, x - shake, y); + move(tty, x, y + shake); + move(tty, x + shake, y); + move(tty, x, y - shake); + move(tty, x, y); } } |