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- /****************************************************************************
- * Copyright (c) 1998-2000,2002 Free Software Foundation, Inc. *
- * *
- * Permission is hereby granted, free of charge, to any person obtaining a *
- * copy of this software and associated documentation files (the *
- * "Software"), to deal in the Software without restriction, including *
- * without limitation the rights to use, copy, modify, merge, publish, *
- * distribute, distribute with modifications, sublicense, and/or sell *
- * copies of the Software, and to permit persons to whom the Software is *
- * furnished to do so, subject to the following conditions: *
- * *
- * The above copyright notice and this permission notice shall be included *
- * in all copies or substantial portions of the Software. *
- * *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
- * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
- * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
- * *
- * Except as contained in this notice, the name(s) of the above copyright *
- * holders shall not be used in advertising or otherwise to promote the *
- * sale, use or other dealings in this Software without prior written *
- * authorization. *
- ****************************************************************************/
-
- /****************************************************************************
- * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
- * and: Eric S. Raymond <esr@snark.thyrsus.com> *
- * and: Thomas E. Dickey 2002 *
- ****************************************************************************/
-
- /*
- * lib_kernel.c
- *
- * Misc. low-level routines:
- * erasechar()
- * killchar()
- * flushinp()
- *
- * The baudrate() and delay_output() functions could logically live here,
- * but are in other modules to reduce the static-link size of programs
- * that use only these facilities.
- */
-
- #include <curses.priv.h>
- #include <term.h> /* cur_term */
-
- MODULE_ID("$Id: lib_kernel.c,v 1.22 2002/05/11 20:32:18 tom Exp $")
-
- static int
- _nc_vdisable(void)
- {
- int value;
- #if defined(_POSIX_VDISABLE) && defined(HAVE_UNISTD_H)
- value = _POSIX_VDISABLE;
- #endif
- #if defined(_PC_VDISABLE)
- if (value == -1) {
- value = fpathconf(0, _PC_VDISABLE);
- if (value == -1) {
- value = 0377;
- }
- }
- #elif defined(VDISABLE)
- if (value == -1)
- value = VDISABLE;
- #endif
- return value;
- }
-
- /*
- * erasechar()
- *
- * Return erase character as given in cur_term->Ottyb.
- *
- */
-
- NCURSES_EXPORT(char)
- erasechar(void)
- {
- int result = ERR;
- T((T_CALLED("erasechar()")));
-
- if (cur_term != 0) {
- #ifdef TERMIOS
- result = cur_term->Ottyb.c_cc[VERASE];
- if (result == _nc_vdisable())
- result = ERR;
- #else
- result = cur_term->Ottyb.sg_erase;
- #endif
- }
- returnCode(result);
- }
-
- /*
- * killchar()
- *
- * Return kill character as given in cur_term->Ottyb.
- *
- */
-
- NCURSES_EXPORT(char)
- killchar(void)
- {
- int result = ERR;
- T((T_CALLED("killchar()")));
-
- if (cur_term != 0) {
- #ifdef TERMIOS
- result = cur_term->Ottyb.c_cc[VKILL];
- if (result == _nc_vdisable())
- result = ERR;
- #else
- result = cur_term->Ottyb.sg_kill;
- #endif
- }
- returnCode(result);
- }
-
- /*
- * flushinp()
- *
- * Flush any input on cur_term->Filedes
- *
- */
-
- NCURSES_EXPORT(int)
- flushinp(void)
- {
- T((T_CALLED("flushinp()")));
-
- if (cur_term != 0) {
- #ifdef TERMIOS
- tcflush(cur_term->Filedes, TCIFLUSH);
- #else
- errno = 0;
- do {
- ioctl(cur_term->Filedes, TIOCFLUSH, 0);
- } while
- (errno == EINTR);
- #endif
- if (SP) {
- SP->_fifohead = -1;
- SP->_fifotail = 0;
- SP->_fifopeek = 0;
- }
- returnCode(OK);
- }
- returnCode(ERR);
- }
-