1 /**************************************************************************** 2 * Copyright (c) 1998,2000 Free Software Foundation, Inc. * 3 * * 4 * Permission is hereby granted, free of charge, to any person obtaining a * 5 * copy of this software and associated documentation files (the * 6 * "Software"), to deal in the Software without restriction, including * 7 * without limitation the rights to use, copy, modify, merge, publish, * 8 * distribute, distribute with modifications, sublicense, and/or sell * 9 * copies of the Software, and to permit persons to whom the Software is * 10 * furnished to do so, subject to the following conditions: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 22 * * 23 * Except as contained in this notice, the name(s) of the above copyright * 24 * holders shall not be used in advertising or otherwise to promote the * 25 * sale, use or other dealings in this Software without prior written * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 31 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32 ****************************************************************************/ 33 34 /* 35 * lib_kernel.c 36 * 37 * Misc. low-level routines: 38 * erasechar() 39 * killchar() 40 * flushinp() 41 * 42 * The baudrate() and delay_output() functions could logically live here, 43 * but are in other modules to reduce the static-link size of programs 44 * that use only these facilities. 45 */ 46 47 #include <curses.priv.h> 48 #include <term.h> /* cur_term */ 49 50 MODULE_ID("$Id: lib_kernel.c,v 1.21 2000/12/10 02:55:07 tom Exp $") 51 52 /* 53 * erasechar() 54 * 55 * Return erase character as given in cur_term->Ottyb. 56 * 57 */ 58 59 NCURSES_EXPORT(char) 60 erasechar(void) 61 { 62 T((T_CALLED("erasechar()"))); 63 64 if (cur_term != 0) { 65 #ifdef TERMIOS 66 returnCode(cur_term->Ottyb.c_cc[VERASE]); 67 #else 68 returnCode(cur_term->Ottyb.sg_erase); 69 #endif 70 } 71 returnCode(ERR); 72 } 73 74 /* 75 * killchar() 76 * 77 * Return kill character as given in cur_term->Ottyb. 78 * 79 */ 80 81 NCURSES_EXPORT(char) 82 killchar(void) 83 { 84 T((T_CALLED("killchar()"))); 85 86 if (cur_term != 0) { 87 #ifdef TERMIOS 88 returnCode(cur_term->Ottyb.c_cc[VKILL]); 89 #else 90 returnCode(cur_term->Ottyb.sg_kill); 91 #endif 92 } 93 returnCode(ERR); 94 } 95 96 /* 97 * flushinp() 98 * 99 * Flush any input on cur_term->Filedes 100 * 101 */ 102 103 NCURSES_EXPORT(int) 104 flushinp(void) 105 { 106 T((T_CALLED("flushinp()"))); 107 108 if (cur_term != 0) { 109 #ifdef TERMIOS 110 tcflush(cur_term->Filedes, TCIFLUSH); 111 #else 112 errno = 0; 113 do { 114 ioctl(cur_term->Filedes, TIOCFLUSH, 0); 115 } while 116 (errno == EINTR); 117 #endif 118 if (SP) { 119 SP->_fifohead = -1; 120 SP->_fifotail = 0; 121 SP->_fifopeek = 0; 122 } 123 returnCode(OK); 124 } 125 returnCode(ERR); 126 } 127