1 /*- 2 * Copyright (c) 1992 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)tty.c 5.2 (Berkeley) 8/31/92";*/ 36 static char rcsid[] = "$Id: tty.c,v 1.1 1993/08/07 05:51:16 mycroft Exp $"; 37 #endif /* not lint */ 38 39 /* 40 * Terminal initialization routines. 41 */ 42 #include <sys/ioctl.h> 43 44 #include <curses.h> 45 #include <termios.h> 46 #include <unistd.h> 47 48 struct termios newtermio, origtermio; 49 static struct termios norawt, rawt; 50 static int useraw; 51 52 /* 53 * gettmode -- 54 * Do terminal type initialization. 55 */ 56 int 57 gettmode() 58 { 59 if (tcgetattr(STDIN_FILENO, &origtermio)) 60 return (OK); 61 62 GT = (origtermio.c_oflag & OXTABS) == 0; 63 NONL = (origtermio.c_oflag & ONLCR) == 0; 64 65 norawt = origtermio; 66 norawt.c_oflag &= ~OXTABS; 67 rawt = norawt; 68 cfmakeraw(&rawt); 69 70 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt) ? ERR : OK); 71 } 72 73 int 74 raw() 75 { 76 useraw = __pfast = __rawmode = 1; 77 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt)); 78 } 79 80 int 81 noraw() 82 { 83 useraw = __pfast = __rawmode = 0; 84 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt)); 85 } 86 87 int 88 cbreak() 89 { 90 rawt.c_lflag &= ~ICANON; 91 norawt.c_lflag &= ~ICANON; 92 93 __rawmode = 1; 94 if (useraw) 95 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt)); 96 else 97 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt)); 98 } 99 100 int 101 nocbreak() 102 { 103 rawt.c_lflag |= ICANON; 104 norawt.c_lflag |= ICANON; 105 106 __rawmode = 0; 107 if (useraw) 108 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt)); 109 else 110 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt)); 111 } 112 113 int 114 echo() 115 { 116 rawt.c_lflag |= ECHO; 117 norawt.c_lflag |= ECHO; 118 119 __echoit = 1; 120 if (useraw) 121 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt)); 122 else 123 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt)); 124 } 125 126 int 127 noecho() 128 { 129 rawt.c_lflag &= ~ECHO; 130 norawt.c_lflag &= ~ECHO; 131 132 __echoit = 0; 133 if (useraw) 134 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt)); 135 else 136 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt)); 137 } 138 139 int 140 nl() 141 { 142 rawt.c_iflag |= ICRNL; 143 rawt.c_oflag |= ONLCR; 144 norawt.c_iflag |= ICRNL; 145 norawt.c_oflag |= ONLCR; 146 147 __pfast = __rawmode; 148 if (useraw) 149 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt)); 150 else 151 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt)); 152 } 153 154 int 155 nonl() 156 { 157 rawt.c_iflag &= ~ICRNL; 158 rawt.c_oflag &= ~ONLCR; 159 norawt.c_iflag &= ~ICRNL; 160 norawt.c_oflag &= ~ONLCR; 161 162 __pfast = 1; 163 if (useraw) 164 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &rawt)); 165 else 166 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &norawt)); 167 } 168 169 int 170 endwin() 171 { 172 if (curscr) { 173 if (curscr->_flags & _STANDOUT) { 174 tputs(SE, 0, __cputchar); 175 curscr->_flags &= ~_STANDOUT; 176 } 177 __endwin = 1; 178 } 179 180 (void)tputs(VE, 0, __cputchar); 181 (void)tputs(TE, 0, __cputchar); 182 (void)fflush(stdout); 183 184 __echoit = origtermio.c_lflag & ECHO; 185 __rawmode = origtermio.c_lflag & ICANON; 186 __pfast = origtermio.c_iflag & ICRNL ? __rawmode : 1; 187 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &origtermio)); 188 } 189 190 /* 191 * The following routines, savetty and resetty are completely useless and 192 * are left in only as stubs. If people actually use them they will almost 193 * certainly screw up the state of the world. 194 */ 195 static struct termios savedtty; 196 int 197 savetty() 198 { 199 return (tcgetattr(STDIN_FILENO, &savedtty)); 200 } 201 202 int 203 resetty() 204 { 205 return (tcsetattr(STDIN_FILENO, TCSADRAIN, &savedtty)); 206 } 207