/*
* Process any signals we have received.
* A received signal cause a bit to be set in "sigs".
*/
void
psignals(void)
{
int tsignals;
if ((tsignals = sigs) == 0)
return;
sigs = 0;
if (tsignals & S_STOP) {
/*
* Clean up the terminal.
*/
lsignal(SIGTTOU, SIG_IGN);
clear_bot();
deinit();
flush(0);
raw_mode(0);
lsignal(SIGTTOU, SIG_DFL);
lsignal(SIGTSTP, SIG_DFL);
kill(getpid(), SIGTSTP);
/*
* ... Bye bye. ...
* Hopefully we'll be back later and resume here...
* Reset the terminal and arrange to repaint the
* screen when we get back to the main command loop.
*/
lsignal(SIGTSTP, stop);
raw_mode(1);
init();
screen_trashed = 1;
tsignals |= S_WINCH;
}
if (tsignals & S_WINCH) {
int old_width, old_height;
/*
* Re-execute scrsize() to read the new window size.
*/
old_width = sc_width;
old_height = sc_height;
get_term();
if (sc_width != old_width || sc_height != old_height) {
wscroll = (sc_height + 1) / 2;
calc_jump_sline();
calc_shift_count();
screen_trashed = 1;
}
}
if (tsignals & S_INTERRUPT) {
ring_bell();
if (quit_on_intr)
quit(QUIT_INTERRUPT);
}
}
/*
* Handlers for -# option.
*/
void
opt_shift(int type, char *s)
{
PARG parg;
char buf[16];
int len;
int err;
switch (type) {
case INIT:
case TOGGLE:
if (*s == '.') {
s++;
shift_count_fraction = getfraction(&s, "#", &err);
if (err)
error("Invalid column fraction", NULL_PARG);
else
calc_shift_count();
} else {
int hs = getnum(&s, "#", &err);
if (err) {
error("Invalid column number", NULL_PARG);
} else {
shift_count = hs;
shift_count_fraction = -1;
}
}
break;
case QUERY:
if (shift_count_fraction < 0) {
parg.p_int = shift_count;
error("Horizontal shift %d columns", &parg);
} else {
(void) snprintf(buf, sizeof (buf), ".%06d",
shift_count_fraction);
len = strlen(buf);
while (len > 2 && buf[len-1] == '0')
len--;
buf[len] = '\0';
parg.p_string = buf;
error("Horizontal shift %s of screen width", &parg);
}
break;
}
}
