1 /* $NetBSD: set.c,v 1.13 2010/02/03 15:34:46 roy Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)set.c 8.2 (Berkeley) 2/28/94"; 36 #endif 37 __RCSID("$NetBSD: set.c,v 1.13 2010/02/03 15:34:46 roy Exp $"); 38 #endif /* not lint */ 39 40 #include <stdio.h> 41 #include <term.h> 42 #include <termios.h> 43 #include <unistd.h> 44 #include "extern.h" 45 46 #define CHK(val, dft) (val <= 0 ? dft : val) 47 48 int set_tabs __P((void)); 49 50 /* 51 * Reset the terminal mode bits to a sensible state. Very useful after 52 * a child program dies in raw mode. 53 */ 54 void 55 reset_mode() 56 { 57 tcgetattr(STDERR_FILENO, &mode); 58 59 #if defined(VDISCARD) && defined(CDISCARD) 60 mode.c_cc[VDISCARD] = CHK(mode.c_cc[VDISCARD], CDISCARD); 61 #endif 62 mode.c_cc[VEOF] = CHK(mode.c_cc[VEOF], CEOF); 63 mode.c_cc[VERASE] = CHK(mode.c_cc[VERASE], CERASE); 64 #if defined(VFLUSH) && defined(CFLUSH) 65 mode.c_cc[VFLUSH] = CHK(mode.c_cc[VFLUSH], CFLUSH); 66 #endif 67 mode.c_cc[VINTR] = CHK(mode.c_cc[VINTR], CINTR); 68 mode.c_cc[VKILL] = CHK(mode.c_cc[VKILL], CKILL); 69 #if defined(VLNEXT) && defined(CLNEXT) 70 mode.c_cc[VLNEXT] = CHK(mode.c_cc[VLNEXT], CLNEXT); 71 #endif 72 mode.c_cc[VQUIT] = CHK(mode.c_cc[VQUIT], CQUIT); 73 #if defined(VREPRINT) && defined(CRPRNT) 74 mode.c_cc[VREPRINT] = CHK(mode.c_cc[VREPRINT], CRPRNT); 75 #endif 76 mode.c_cc[VSTART] = CHK(mode.c_cc[VSTART], CSTART); 77 mode.c_cc[VSTOP] = CHK(mode.c_cc[VSTOP], CSTOP); 78 mode.c_cc[VSUSP] = CHK(mode.c_cc[VSUSP], CSUSP); 79 #if defined(VWERASE) && defined(CWERASE) 80 mode.c_cc[VWERASE] = CHK(mode.c_cc[VWERASE], CWERASE); 81 #endif 82 83 mode.c_iflag &= ~(IGNBRK | PARMRK | INPCK | ISTRIP | INLCR | IGNCR 84 #ifdef IUCLC 85 | IUCLC 86 #endif 87 #ifdef IXANY 88 | IXANY 89 #endif 90 | IXOFF); 91 92 mode.c_iflag |= (BRKINT | IGNPAR | ICRNL | IXON 93 #ifdef IMAXBEL 94 | IMAXBEL 95 #endif 96 ); 97 98 mode.c_oflag &= ~(0 99 #ifdef OLCUC 100 | OLCUC 101 #endif 102 #ifdef OCRNL 103 | OCRNL 104 #endif 105 #ifdef ONOCR 106 | ONOCR 107 #endif 108 #ifdef ONLRET 109 | ONLRET 110 #endif 111 #ifdef OFILL 112 | OFILL 113 #endif 114 #ifdef OFDEL 115 | OFDEL 116 #endif 117 #ifdef NLDLY 118 | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY 119 #endif 120 ); 121 122 mode.c_oflag |= (OPOST 123 #ifdef ONLCR 124 | ONLCR 125 #endif 126 ); 127 128 mode.c_cflag &= ~(CSIZE | CSTOPB | PARENB | PARODD); 129 mode.c_cflag |= (CS8 | CREAD); 130 mode.c_lflag &= ~(ECHONL | NOFLSH | TOSTOP 131 #ifdef ECHOPTR 132 | ECHOPRT 133 #endif 134 #ifdef XCASE 135 | XCASE 136 #endif 137 ); 138 139 mode.c_lflag |= (ISIG | ICANON | ECHO | ECHOE | ECHOK 140 #ifdef ECHOCTL 141 | ECHOCTL 142 #endif 143 #ifdef ECHOKE 144 | ECHOKE 145 #endif 146 ); 147 148 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 149 } 150 151 /* 152 * Determine the erase, interrupt, and kill characters from the termcap 153 * entry and command line and update their values in 'mode'. 154 */ 155 void 156 set_control_chars(int erasechar, int intrchar, int killchar) 157 { 158 159 if (mode.c_cc[VERASE] == 0 || erasechar != 0) { 160 if (erasechar == 0) { 161 if (over_strike && 162 key_backspace != NULL && 163 key_backspace[1] == '\0') 164 mode.c_cc[VERASE] = key_backspace[1]; 165 else 166 mode.c_cc[VERASE] = CERASE; 167 } else 168 mode.c_cc[VERASE] = erasechar; 169 } 170 171 if (mode.c_cc[VINTR] == 0 || intrchar != 0) 172 mode.c_cc[VINTR] = intrchar ? intrchar : CINTR; 173 174 if (mode.c_cc[VKILL] == 0 || killchar != 0) 175 mode.c_cc[VKILL] = killchar ? killchar : CKILL; 176 } 177 178 /* 179 * Set up various conversions in 'mode', including parity, tabs, returns, 180 * echo, and case, according to the termcap entry. If the program we're 181 * running was named with a leading upper-case character, map external 182 * uppercase to internal lowercase. 183 */ 184 void 185 set_conversions(int usingupper) 186 { 187 188 #ifdef ONLCR 189 mode.c_oflag |= ONLCR; 190 #endif 191 mode.c_iflag |= ICRNL; 192 mode.c_lflag |= ECHO; 193 mode.c_oflag |= OXTABS; 194 if (newline != NULL && newline[0] == '\n' && !newline[1]) { /* Newline, not linefeed. */ 195 #ifdef ONLCR 196 mode.c_oflag &= ~ONLCR; 197 #endif 198 mode.c_iflag &= ~ICRNL; 199 } 200 if (tab) /* Print tabs. */ 201 mode.c_oflag &= ~OXTABS; 202 mode.c_lflag |= (ECHOE | ECHOK); 203 } 204 205 /* Output startup string. */ 206 void 207 set_init() 208 { 209 const char *bp; 210 int settle; 211 212 #ifdef TAB3 213 if (oldmode.c_oflag & (TAB3 | ONLCR | OCRNL | ONLRET)) { 214 oldmode.c_oflag &= (TAB3 | ONLCR | OCRNL | ONLRET); 215 tcsetattr(STDERR_FILENO, TCSADRAIN, &oldmode); 216 } 217 #endif 218 settle = set_tabs(); 219 220 if (isreset) { 221 if (reset_1string) { 222 tputs(reset_1string, 0, outc); 223 settle = 1; 224 } 225 if (reset_2string) { 226 tputs(reset_2string, 0, outc); 227 settle = 1; 228 } 229 if ((bp = reset_file) || (bp = init_file)) { 230 tputs(bp, 0, outc); 231 settle = 1; 232 } 233 } 234 235 if (settle) { 236 (void)putc('\r', stderr); 237 (void)fflush(stderr); 238 (void)sleep(1); /* Settle the terminal. */ 239 } 240 } 241 242 /* 243 * Set the hardware tabs on the terminal, using the ct (clear all tabs), 244 * st (set one tab) and ch (horizontal cursor addressing) capabilities. 245 * This is done before if and is, so they can patch in case we blow this. 246 * Return nonzero if we set any tab stops, zero if not. 247 */ 248 int 249 set_tabs() 250 { 251 int c; 252 char *out; 253 254 if (set_tab) { 255 if (clear_all_tabs) { 256 (void)putc('\r', stderr); /* Force to left margin. */ 257 tputs(clear_all_tabs, 0, outc); 258 } 259 260 for (c = 8; c < ncolumns; c += 8) { 261 if (column_address) 262 out = vtparm(column_address, c); 263 else 264 out = NULL; 265 if (out) 266 tputs(out, 1, outc); 267 else 268 (void)fprintf(stderr, "%s", " "); 269 /* Set the tab. */ 270 tputs(set_tab, 0, outc); 271 } 272 putc('\r', stderr); 273 return (1); 274 } 275 return (0); 276 } 277