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Differential D10637 Diff 28139 head/usr.bin/resizewin/resizewin.c

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head/usr.bin/resizewin/resizewin.c

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/* screen doesn't support ESC[18t (return terminal size) so do it the hard way */ /* screen doesn't support ESC[18t (return terminal size) so do it the hard way */
static const char query[] = static const char query[] =
"\0337" /* Save cursor position */ "\0337" /* Save cursor position */
"\033[r" /* Scroll whole screen */ "\033[r" /* Scroll whole screen */
"\033[999;999H" /* Move cursor */ "\033[999;999H" /* Move cursor */
"\033[6n" /* Get cursor position */ "\033[6n" /* Get cursor position */
"\0338"; /* Restore cursor position */ "\0338"; /* Restore cursor position */
static void
usage(void)
{
fprintf(stderr, "usage: resizewin [-z]\n");
exit(1);
}
int int
main(__unused int argc, __unused char **argv) main(int argc, char **argv)
{ {
struct termios old, new; struct termios old, new;
struct winsize w; struct winsize w;
int ret, fd, cnt, error; int ret, fd, ch, cnt, error, zflag;
char data[20]; char data[20];
struct timeval then, now; struct timeval then, now;
error = 0; error = 0;
zflag = 0;
while ((ch = getopt(argc, argv, "z")) != -1) {
switch (ch) {
case 'z':
zflag = 1;
break;
case '?':
default:
usage();
}
}
argc -= optind;
if (argc != 0)
usage();
if ((fd = open("/dev/tty", O_RDWR | O_NONBLOCK)) == -1) if ((fd = open("/dev/tty", O_RDWR | O_NONBLOCK)) == -1)
exit(1); exit(1);
if (zflag) {
if (ioctl(fd, TIOCGWINSZ, &w) == -1)
exit(1);
if (w.ws_row != 0 && w.ws_col != 0)
exit(0);
}
/* Disable echo */ /* Disable echo */
if (tcgetattr(fd, &old) == -1) if (tcgetattr(fd, &old) == -1)
exit(1); exit(1);
new = old; new = old;
new.c_cflag |= (CLOCAL | CREAD); new.c_cflag |= (CLOCAL | CREAD);
new.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG); new.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
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