static inline int
fifo_push(void)
{
int n;
unsigned int ch;
if (tail == -1)
return ERR;
#ifdef HIDE_EINTR
again:
errno = 0;
#endif
#if USE_GPM_SUPPORT || defined(USE_EMX_MOUSE)
if ((SP->_mouse_fd >= 0)
&& (_nc_timed_wait(3, -1, (int *) 0) & 2)) {
SP->_mouse_event(SP);
ch = KEY_MOUSE;
n = 1;
} else
#endif
{
unsigned char c2 = 0;
n = read(SP->_ifd, &c2, 1);
ch = c2 & 0xff;
}
#ifdef HIDE_EINTR
/*
* Under System V curses with non-restarting signals, getch() returns
* with value ERR when a handled signal keeps it from completing.
* If signals restart system calls, OTOH, the signal is invisible
* except to its handler.
*
* We don't want this difference to show. This piece of code
* tries to make it look like we always have restarting signals.
*/
if (n <= 0 && errno == EINTR)
goto again;
#endif
if ((n == -1) || (n == 0)) {
TR(TRACE_IEVENT, ("read(%d,&ch,1)=%d, errno=%d", SP->_ifd, n, errno));
ch = ERR;
}
TR(TRACE_IEVENT, ("read %d characters", n));
SP->_fifo[tail] = ch;
SP->_fifohold = 0;
if (head == -1)
head = peek = tail;
t_inc();
TR(TRACE_IEVENT, ("pushed %#x at %d", ch, tail));
#ifdef TRACE
if (_nc_tracing & TRACE_IEVENT)
_nc_fifo_dump();
#endif
return ch;
}
/*
* Check for mouse activity, returning nonzero if we find any.
*/
static int
check_mouse_activity(SCREEN *sp, int delay EVENTLIST_2nd(_nc_eventlist * evl))
{
int rc;
#ifdef USE_TERM_DRIVER
rc = TCBOf(sp)->drv->testmouse(TCBOf(sp), delay EVENTLIST_2nd(evl));
#else
#if USE_SYSMOUSE
if ((sp->_mouse_type == M_SYSMOUSE)
&& (sp->_sysmouse_head < sp->_sysmouse_tail)) {
rc = TW_MOUSE;
} else
#endif
{
rc = _nc_timed_wait(sp,
TWAIT_MASK,
delay,
(int *) 0
EVENTLIST_2nd(evl));
#if USE_SYSMOUSE
if ((sp->_mouse_type == M_SYSMOUSE)
&& (sp->_sysmouse_head < sp->_sysmouse_tail)
&& (rc == 0)
&& (errno == EINTR)) {
rc |= TW_MOUSE;
}
#endif
}
#endif
return rc;
}
int delay_output(int ms)
{
T((T_CALLED("delay_output(%d)"), ms));
if (cur_term == 0 || cur_term->_baudrate <= 0) {
(void) fflush(OUTPUT);
_nc_timed_wait(0, ms, (int *)0);
}
#ifdef no_pad_char
else if (no_pad_char)
napms(ms);
#endif /* no_pad_char */
else {
register int nullcount;
char null = '\0';
#ifdef pad_char
if (pad_char)
null = pad_char[0];
#endif /* pad_char */
nullcount = ms * cur_term->_baudrate / 10000;
for (_nc_nulls_sent += nullcount; nullcount > 0; nullcount--)
my_outch(null);
if (my_outch == _nc_outch)
(void) fflush(OUTPUT);
}
returnCode(OK);
}
NCURSES_SP_NAME(napms) (NCURSES_SP_DCLx int ms)
{
(void) SP_PARM;
T((T_CALLED("napms(%d)"), ms));
#ifdef USE_TERM_DRIVER
CallDriver_1(SP_PARM, nap, ms);
#else /* !USE_TERM_DRIVER */
#if HAVE_NANOSLEEP
{
struct timespec request, remaining;
request.tv_sec = ms / 1000;
request.tv_nsec = (ms % 1000) * 1000000;
while (nanosleep(&request, &remaining) == -1
&& errno == EINTR) {
request = remaining;
}
}
#else
_nc_timed_wait(0, 0, ms, (int *) 0 EVENTLIST_2nd(0));
#endif
#endif /* !USE_TERM_DRIVER */
returnCode(OK);
}
napms(int ms)
{
T((T_CALLED("napms(%d)"), ms));
#if HAVE_NANOSLEEP
{
struct timespec request, remaining;
request.tv_sec = ms / 1000;
request.tv_nsec = (ms % 1000) * 1000000;
while (nanosleep(&request, &remaining) == -1
&& errno == EINTR) {
request = remaining;
}
}
#else
_nc_timed_wait(0, 0, ms, (int *) 0 EVENTLIST_2nd(0));
#endif
returnCode(OK);
}
/*
* Check for mouse activity, returning nonzero if we find any.
*/
static int
check_mouse_activity(SCREEN *sp, int delay EVENTLIST_2nd(_nc_eventlist * evl))
{
int rc;
#ifdef USE_TERM_DRIVER
TERMINAL_CONTROL_BLOCK *TCB = TCBOf(sp);
rc = TCBOf(sp)->drv->td_testmouse(TCBOf(sp), delay EVENTLIST_2nd(evl));
# ifdef __MINGW32__
/* if we emulate terminfo on console, we have to use the console routine */
if (IsTermInfoOnConsole(sp)) {
HANDLE fd = _nc_get_handle(sp->_ifd);
rc = _nc_mingw_testmouse(sp, fd, delay EVENTLIST_2nd(evl));
} else
# endif
rc = TCB->drv->td_testmouse(TCB, delay EVENTLIST_2nd(evl));
#else
#if USE_SYSMOUSE
if ((sp->_mouse_type == M_SYSMOUSE)
&& (sp->_sysmouse_head < sp->_sysmouse_tail)) {
rc = TW_MOUSE;
} else
#endif
{
rc = _nc_timed_wait(sp,
TWAIT_MASK,
delay,
(int *) 0
EVENTLIST_2nd(evl));
#if USE_SYSMOUSE
if ((sp->_mouse_type == M_SYSMOUSE)
&& (sp->_sysmouse_head < sp->_sysmouse_tail)
&& (rc == 0)
&& (errno == EINTR)) {
rc |= TW_MOUSE;
}
#endif
}
#endif
return rc;
}
/*
* Check for mouse activity, returning nonzero if we find any.
*/
static int
check_mouse_activity(int delay EVENTLIST_2nd(_nc_eventlist * evl))
{
int rc;
#if USE_SYSMOUSE
if ((SP->_mouse_type == M_SYSMOUSE)
&& (SP->_sysmouse_head < SP->_sysmouse_tail)) {
return 2;
}
#endif
rc = _nc_timed_wait(TWAIT_MASK, delay, (int *) 0 EVENTLIST_2nd(evl));
#if USE_SYSMOUSE
if ((SP->_mouse_type == M_SYSMOUSE)
&& (SP->_sysmouse_head < SP->_sysmouse_tail)
&& (rc == 0)
&& (errno == EINTR)) {
rc |= 2;
}
#endif
return rc;
}
int
wgetch(WINDOW *win)
{
int ch;
T((T_CALLED("wgetch(%p)"), win));
if (!win)
returnCode(ERR);
if (cooked_key_in_fifo()) {
if (wgetch_should_refresh(win))
wrefresh(win);
ch = fifo_pull();
T(("wgetch returning (pre-cooked): %#x = %s", ch, _trace_key(ch)));
returnCode(ch);
}
/*
* Handle cooked mode. Grab a string from the screen,
* stuff its contents in the FIFO queue, and pop off
* the first character to return it.
*/
if (head == -1 && !SP->_raw && !SP->_cbreak) {
char buf[MAXCOLUMNS], *sp;
TR(TRACE_IEVENT, ("filling queue in cooked mode"));
wgetnstr(win, buf, MAXCOLUMNS);
/* ungetch in reverse order */
ungetch('\n');
for (sp = buf + strlen(buf); sp > buf; sp--)
ungetch(sp[-1]);
returnCode(fifo_pull());
}
if (wgetch_should_refresh(win))
wrefresh(win);
if (!win->_notimeout && (win->_delay >= 0 || SP->_cbreak > 1)) {
int delay;
TR(TRACE_IEVENT, ("timed delay in wgetch()"));
if (SP->_cbreak > 1)
delay = (SP->_cbreak - 1) * 100;
else
delay = win->_delay;
TR(TRACE_IEVENT, ("delay is %d milliseconds", delay));
if (head == -1) /* fifo is empty */
if (!_nc_timed_wait(3, delay, (int *) 0))
returnCode(ERR);
/* else go on to read data available */
}
if (win->_use_keypad) {
/*
* This is tricky. We only want to get special-key
* events one at a time. But we want to accumulate
* mouse events until either (a) the mouse logic tells
* us it's picked up a complete gesture, or (b)
* there's a detectable time lapse after one.
*
* Note: if the mouse code starts failing to compose
* press/release events into clicks, you should probably
* increase the wait with mouseinterval().
*/
int runcount = 0;
do {
ch = kgetch(win);
if (ch == KEY_MOUSE) {
++runcount;
if (SP->_mouse_inline(SP))
break;
}
} while
(ch == KEY_MOUSE
&& (_nc_timed_wait(3, SP->_maxclick, (int *) 0)
|| !SP->_mouse_parse(runcount)));
if (runcount > 0 && ch != KEY_MOUSE) {
/* mouse event sequence ended by keystroke, push it */
ungetch(ch);
ch = KEY_MOUSE;
}
} else {
if (head == -1)
fifo_push();
ch = fifo_pull();
}
if (ch == ERR) {
#if USE_SIZECHANGE
if (SP->_sig_winch) {
_nc_update_screensize();
/* resizeterm can push KEY_RESIZE */
if (cooked_key_in_fifo()) {
ch = fifo_pull();
T(("wgetch returning (pre-cooked): %#x = %s", ch, _trace_key(ch)));
returnCode(ch);
}
}
#endif
T(("wgetch returning ERR"));
returnCode(ERR);
}
/*
* If echo() is in effect, display the printable version of the
* key on the screen. Carriage return and backspace are treated
* specially by Solaris curses:
*
* If carriage return is defined as a function key in the
* terminfo, e.g., kent, then Solaris may return either ^J (or ^M
* if nonl() is set) or KEY_ENTER depending on the echo() mode.
* We echo before translating carriage return based on nonl(),
* since the visual result simply moves the cursor to column 0.
*
* Backspace is a different matter. Solaris curses does not
* translate it to KEY_BACKSPACE if kbs=^H. This does not depend
* on the stty modes, but appears to be a hardcoded special case.
* This is a difference from ncurses, which uses the terminfo entry.
* However, we provide the same visual result as Solaris, moving the
* cursor to the left.
*/
if (SP->_echo && !(win->_flags & _ISPAD)) {
chtype backup = (ch == KEY_BACKSPACE) ? '\b' : ch;
if (backup < KEY_MIN)
wechochar(win, backup);
}
/*
* Simulate ICRNL mode
*/
if ((ch == '\r') && SP->_nl)
ch = '\n';
/* Strip 8th-bit if so desired. We do this only for characters that
* are in the range 128-255, to provide compatibility with terminals
* that display only 7-bit characters. Note that 'ch' may be a
* function key at this point, so we mustn't strip _those_.
*/
if ((ch < KEY_MIN) && (ch & 0x80))
if (!SP->_use_meta)
ch &= 0x7f;
T(("wgetch returning : %#x = %s", ch, _trace_key(ch)));
returnCode(ch);
}
