diff options
Diffstat (limited to 'ncurses-5.3/ncurses/tinfo/lib_kernel.c')
| -rw-r--r-- | ncurses-5.3/ncurses/tinfo/lib_kernel.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/ncurses-5.3/ncurses/tinfo/lib_kernel.c b/ncurses-5.3/ncurses/tinfo/lib_kernel.c new file mode 100644 index 0000000..b6868b9 --- /dev/null +++ b/ncurses-5.3/ncurses/tinfo/lib_kernel.c @@ -0,0 +1,154 @@ +/**************************************************************************** + * 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("$Id$") + +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); +} |