int wgetch(WINDOW *win)
{
static int buffer[_INBUFSIZ]; /* character buffer */
int key, waitcount;
PDC_LOG(("wgetch() - called\n"));
if (!win)
return ERR;
waitcount = 0;
/* set the number of 1/20th second napms() calls */
if (SP->delaytenths)
waitcount = 2 * SP->delaytenths;
else
if (win->_delayms)
{
/* Can't really do millisecond intervals, so delay in
1/20ths of a second (50ms) */
waitcount = win->_delayms / 50;
if (!waitcount)
waitcount = 1;
}
/* refresh window when wgetch is called if there have been changes
to it and it is not a pad */
if (!(win->_flags & _PAD) && ((!win->_leaveit &&
(win->_begx + win->_curx != SP->curscol ||
win->_begy + win->_cury != SP->cursrow)) || is_wintouched(win)))
wrefresh(win);
/* if ungotten char exists, remove and return it */
if (c_ungind)
return c_ungch[--c_ungind];
/* if normal and data in buffer */
if ((!SP->raw_inp && !SP->cbreak) && (c_gindex < c_pindex))
return buffer[c_gindex++];
/* prepare to buffer data */
c_pindex = 0;
c_gindex = 0;
/* to get here, no keys are buffered. go and get one. */
for (;;) /* loop for any buffering */
{
/* is there a keystroke ready? */
if (!PDC_check_key())
{
/* if not, handle timeout() and halfdelay() */
if (SP->delaytenths || win->_delayms)
{
if (!waitcount)
return ERR;
waitcount--;
}
else
if (win->_nodelay)
return ERR;
napms(50); /* sleep for 1/20th second */
continue; /* then check again */
}
/* if there is, fetch it */
key = PDC_get_key();
if (SP->key_code)
{
/* filter special keys if not in keypad mode */
if (!win->_use_keypad)
key = -1;
/* filter mouse events; translate mouse clicks in the slk
area to function keys */
else if (key == KEY_MOUSE)
key = _mouse_key();
}
/* unwanted key? loop back */
if (key == -1)
continue;
/* translate CR */
if (key == '\r' && SP->autocr && !SP->raw_inp)
key = '\n';
/* if echo is enabled */
if (SP->echo && !SP->key_code)
{
waddch(win, key);
wrefresh(win);
}
/* if no buffering */
if (SP->raw_inp || SP->cbreak)
return key;
/* if no overflow, put data in buffer */
if (key == '\b')
{
if (c_pindex > c_gindex)
c_pindex--;
}
else
if (c_pindex < _INBUFSIZ - 2)
buffer[c_pindex++] = key;
/* if we got a line */
if (key == '\n' || key == '\r')
return buffer[c_gindex++];
}
}
wgetn_wstr(WINDOW *win, wint_t *str, int maxlen)
{
SCREEN *sp = _nc_screen_of(win);
TTY buf;
bool oldnl, oldecho, oldraw, oldcbreak;
wint_t erasec;
wint_t killc;
wint_t *oldstr = str;
wint_t *tmpstr = str;
wint_t ch;
int y, x, code;
T((T_CALLED("wgetn_wstr(%p,%p, %d)"), (void *) win, (void *) str, maxlen));
if (!win)
returnCode(ERR);
_nc_get_tty_mode(&buf);
oldnl = sp->_nl;
oldecho = sp->_echo;
oldraw = sp->_raw;
oldcbreak = sp->_cbreak;
nl();
noecho();
noraw();
cbreak();
erasec = (wint_t) erasechar();
killc = (wint_t) killchar();
getyx(win, y, x);
if (is_wintouched(win) || (win->_flags & _HASMOVED))
wrefresh(win);
while ((code = wget_wch(win, &ch)) != ERR) {
/*
* Map special characters into key-codes.
*/
if (ch == '\r')
ch = '\n';
if (ch == '\n') {
code = KEY_CODE_YES;
ch = KEY_ENTER;
}
if (ch < KEY_MIN) {
if (ch == erasec) {
ch = KEY_BACKSPACE;
code = KEY_CODE_YES;
}
if (ch == killc) {
ch = KEY_EOL;
code = KEY_CODE_YES;
}
}
if (code == KEY_CODE_YES) {
/*
* Some terminals (the Wyse-50 is the most common) generate a \n
* from the down-arrow key. With this logic, it's the user's
* choice whether to set kcud=\n for wget_wch(); terminating
* *getn_wstr() with \n should work either way.
*/
if (ch == KEY_DOWN || ch == KEY_ENTER) {
if (oldecho == TRUE
&& win->_cury == win->_maxy
&& win->_scroll)
wechochar(win, (chtype) '\n');
break;
}
if (ch == KEY_LEFT || ch == KEY_BACKSPACE) {
if (tmpstr > oldstr) {
tmpstr = WipeOut(win, y, x, oldstr, tmpstr, oldecho);
}
} else if (ch == KEY_EOL) {
while (tmpstr > oldstr) {
tmpstr = WipeOut(win, y, x, oldstr, tmpstr, oldecho);
}
} else {
beep();
}
} else if (maxlen >= 0 && tmpstr - oldstr >= maxlen) {
beep();
} else {
*tmpstr++ = ch;
*tmpstr = 0;
if (oldecho == TRUE) {
int oldy = win->_cury;
if (wadd_wint(win, tmpstr - 1) == ERR) {
/*
* We can't really use the lower-right corner for input,
* since it'll mess up bookkeeping for erases.
*/
win->_flags &= ~_WRAPPED;
waddch(win, (chtype) ' ');
tmpstr = WipeOut(win, y, x, oldstr, tmpstr, oldecho);
continue;
} else if (win->_flags & _WRAPPED) {
/*
* If the last waddch forced a wrap & scroll, adjust our
* reference point for erasures.
*/
if (win->_scroll
&& oldy == win->_maxy
&& win->_cury == win->_maxy) {
if (--y <= 0) {
y = 0;
}
}
win->_flags &= ~_WRAPPED;
}
wrefresh(win);
}
}
}
win->_curx = 0;
win->_flags &= ~_WRAPPED;
if (win->_cury < win->_maxy)
win->_cury++;
wrefresh(win);
/* Restore with a single I/O call, to fix minor asymmetry between
* raw/noraw, etc.
*/
sp->_nl = oldnl;
sp->_echo = oldecho;
sp->_raw = oldraw;
sp->_cbreak = oldcbreak;
(void) _nc_set_tty_mode(&buf);
*tmpstr = 0;
if (code == ERR) {
if (tmpstr == oldstr) {
*tmpstr++ = WEOF;
*tmpstr = 0;
}
returnCode(ERR);
}
T(("wgetn_wstr returns %s", _nc_viswibuf(oldstr)));
returnCode(OK);
}
