Esempio n. 1
0
wget_wch(WINDOW *win, wint_t *result)
{
    int code;
    char buffer[(MB_LEN_MAX * 9) + 1];	/* allow some redundant shifts */
    int status;
    size_t count = 0;
    unsigned long value;
    wchar_t wch;
#ifndef state_unused
    mbstate_t state;
#endif

    T((T_CALLED("wget_wch(%p)"), win));

    /*
     * We can get a stream of single-byte characters and KEY_xxx codes from
     * _nc_wgetch(), while we want to return a wide character or KEY_xxx code.
     */
    for (;;) {
	T(("reading %d of %d", count + 1, sizeof(buffer)));
	code = _nc_wgetch(win, &value, TRUE);
	if (code == ERR) {
	    break;
	} else if (code == KEY_CODE_YES) {
	    /*
	     * If we were processing an incomplete multibyte character, return
	     * an error since we have a KEY_xxx code which interrupts it.  For
	     * some cases, we could improve this by writing a new version of
	     * lib_getch.c(!), but it is not clear whether the improvement
	     * would be worth the effort.
	     */
	    if (count != 0) {
		ungetch((int) value);
		code = ERR;
	    }
	    break;
	} else if (count + 1 >= sizeof(buffer)) {
	    ungetch((int) value);
	    code = ERR;
	    break;
	} else {
	    buffer[count++] = UChar(value);
	    reset_mbytes(state);
	    status = count_mbytes(buffer, count, state);
	    if (status >= 0) {
		reset_mbytes(state);
		if (check_mbytes(wch, buffer, count, state) != status) {
		    code = ERR;	/* the two calls should match */
		    ungetch((int) value);
		}
		value = wch;
		break;
	    }
	}
    }
    *result = value;
    T(("result %#lo", value));
    returnCode(code);
}
Esempio n. 2
0
wget_wch(WINDOW *win, wint_t *result)
{
    SCREEN *sp;
    int code;
    char buffer[(MB_LEN_MAX * 9) + 1];	/* allow some redundant shifts */
    int status;
    size_t count = 0;
    int value = 0;
    wchar_t wch;
#ifndef state_unused
    mbstate_t state;
#endif

    T((T_CALLED("wget_wch(%p)"), (void *) win));

    /*
     * We can get a stream of single-byte characters and KEY_xxx codes from
     * _nc_wgetch(), while we want to return a wide character or KEY_xxx code.
     */
    _nc_lock_global(curses);
    sp = _nc_screen_of(win);
    if (sp != 0) {
	for (;;) {
	    T(("reading %d of %d", (int) count + 1, (int) sizeof(buffer)));
	    code = _nc_wgetch(win, &value, TRUE EVENTLIST_2nd((_nc_eventlist
							       *) 0));
	    if (code == ERR) {
		break;
	    } else if (code == KEY_CODE_YES) {
		/*
		 * If we were processing an incomplete multibyte character,
		 * return an error since we have a KEY_xxx code which
		 * interrupts it.  For some cases, we could improve this by
		 * writing a new version of lib_getch.c(!), but it is not clear
		 * whether the improvement would be worth the effort.
		 */
		if (count != 0) {
		    safe_ungetch(SP_PARM, value);
		    code = ERR;
		}
		break;
	    } else if (count + 1 >= sizeof(buffer)) {
		safe_ungetch(SP_PARM, value);
		code = ERR;
		break;
	    } else {
		buffer[count++] = (char) UChar(value);
		reset_mbytes(state);
		status = count_mbytes(buffer, count, state);
		if (status >= 0) {
		    reset_mbytes(state);
		    if (check_mbytes(wch, buffer, count, state) != status) {
			code = ERR;	/* the two calls should match */
			safe_ungetch(SP_PARM, value);
		    }
		    value = wch;
		    break;
		}
	    }
	}
    } else {
	code = ERR;
    }
    *result = (wint_t) value;
    _nc_unlock_global(curses);
    T(("result %#o", value));
    returnCode(code);
}