tset.c revision 1.16
1 /* $NetBSD: tset.c,v 1.16 2008/07/21 14:19:27 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1980, 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 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993\ 35 The Regents of the University of California. All rights reserved."); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)tset.c 8.1 (Berkeley) 6/9/93"; 41 #endif 42 __RCSID("$NetBSD: tset.c,v 1.16 2008/07/21 14:19:27 lukem Exp $"); 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 #include <sys/ioctl.h> 47 #include <ctype.h> 48 #include <err.h> 49 #include <errno.h> 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <string.h> 53 #include <termcap.h> 54 #include <termios.h> 55 #include <unistd.h> 56 #include "extern.h" 57 58 int main __P((int, char *[])); 59 void obsolete __P((char *[])); 60 void report __P((char *, int, u_int)); 61 void usage __P((void)); 62 63 struct termios mode, oldmode; 64 65 int isreset; /* invoked as reset */ 66 int lines, columns; /* window size */ 67 68 int 69 main(argc, argv) 70 int argc; 71 char *argv[]; 72 { 73 #ifdef TIOCGWINSZ 74 struct winsize win; 75 #endif 76 int ch, extended, noinit, noset, quiet, Sflag, sflag, showterm; 77 int erasechar = 0, intrchar = 0, killchar = 0; 78 int usingupper; 79 char savech, *p, *q, *t, *tcapbuf; 80 const char *ttype; 81 82 if (tcgetattr(STDERR_FILENO, &mode) < 0) 83 err(1, "standard error"); 84 85 oldmode = mode; 86 ospeed = cfgetospeed(&mode); 87 88 if ((p = strrchr(*argv, '/')) != NULL) 89 ++p; 90 else 91 p = *argv; 92 usingupper = isupper((unsigned char)*p); 93 if (!strcasecmp(p, "reset")) { 94 isreset = 1; 95 reset_mode(); 96 } 97 98 obsolete(argv); 99 noinit = noset = quiet = Sflag = sflag = showterm = extended = 0; 100 while ((ch = getopt(argc, argv, "-a:d:e:EIi:k:m:np:QSrs")) != -1) { 101 switch (ch) { 102 case '-': /* display term only */ 103 noset = 1; 104 break; 105 case 'a': /* OBSOLETE: map identifier to type */ 106 add_mapping("arpanet", optarg); 107 break; 108 case 'd': /* OBSOLETE: map identifier to type */ 109 add_mapping("dialup", optarg); 110 break; 111 case 'e': /* erase character */ 112 erasechar = optarg[0] == '^' && optarg[1] != '\0' ? 113 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 114 optarg[0]; 115 break; 116 case 'E': 117 extended = 1; 118 break; 119 case 'I': /* no initialization strings */ 120 noinit = 1; 121 break; 122 case 'i': /* interrupt character */ 123 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 124 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 125 optarg[0]; 126 break; 127 case 'k': /* kill character */ 128 killchar = optarg[0] == '^' && optarg[1] != '\0' ? 129 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 130 optarg[0]; 131 break; 132 case 'm': /* map identifier to type */ 133 add_mapping(NULL, optarg); 134 break; 135 case 'n': /* OBSOLETE: set new tty driver */ 136 break; 137 case 'p': /* OBSOLETE: map identifier to type */ 138 add_mapping("plugboard", optarg); 139 break; 140 case 'Q': /* don't output control key settings */ 141 quiet = 1; 142 break; 143 case 'S': /* output TERM/TERMCAP strings */ 144 Sflag = 1; 145 break; 146 case 'r': /* display term on stderr */ 147 showterm = 1; 148 break; 149 case 's': /* output TERM/TERMCAP strings */ 150 sflag = 1; 151 break; 152 case '?': 153 default: 154 usage(); 155 } 156 } 157 argc -= optind; 158 argv += optind; 159 160 if (argc > 1) 161 usage(); 162 163 ttype = get_termcap_entry(*argv, &tcapbuf, extended); 164 165 if (!noset) { 166 columns = tgetnum("co"); 167 lines = tgetnum("li"); 168 169 #ifdef TIOCGWINSZ 170 /* Set window size */ 171 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 172 if (win.ws_row > 0 && win.ws_col > 0) { 173 lines = win.ws_row; 174 columns = win.ws_col; 175 } else if (win.ws_row == 0 && win.ws_col == 0 && 176 lines > 0 && columns > 0) { 177 win.ws_row = lines; 178 win.ws_col = columns; 179 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 180 } 181 #endif 182 set_control_chars(erasechar, intrchar, killchar); 183 set_conversions(usingupper); 184 185 if (!noinit) 186 set_init(); 187 188 /* Set the modes if they've changed. */ 189 if (memcmp(&mode, &oldmode, sizeof(mode))) 190 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 191 } 192 193 /* Get the terminal name from the entry. */ 194 p = tcapbuf; 195 if (p != NULL && *p != ':') { 196 t = p; 197 if ((p = strpbrk(p, "|:")) != NULL) { 198 savech = *p; 199 *p = '\0'; 200 if ((ttype = strdup(t)) == NULL) 201 err(1, "strdup"); 202 *p = savech; 203 } 204 } 205 206 if (noset) 207 (void)printf("%s\n", ttype); 208 else { 209 if (showterm) 210 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 211 /* 212 * If erase, kill and interrupt characters could have been 213 * modified and not -Q, display the changes. 214 */ 215 if (!quiet) { 216 report("Erase", VERASE, CERASE); 217 report("Kill", VKILL, CKILL); 218 report("Interrupt", VINTR, CINTR); 219 } 220 } 221 222 if (Sflag) { 223 (void)printf("%s ", ttype); 224 wrtermcap(tcapbuf); 225 } 226 227 if (sflag) { 228 /* 229 * Figure out what shell we're using. A hack, we look for an 230 * environmental variable SHELL ending in "csh". 231 */ 232 if ((p = getenv("SHELL")) && 233 !strcmp(p + strlen(p) - 3, "csh")) { 234 p = "set noglob;\nsetenv TERM "; 235 q = ";\nsetenv TERMCAP '"; 236 t = "';\nunset noglob;\n"; 237 } else { 238 p = "TERM="; 239 q = ";\nTERMCAP='"; 240 t = "';\nexport TERMCAP TERM;\n"; 241 } 242 (void)printf("%s%s%s", p, ttype, q); 243 wrtermcap(tcapbuf); 244 (void)printf("%s", t); 245 } 246 247 exit(0); 248 } 249 250 /* 251 * Tell the user if a control key has been changed from the default value. 252 */ 253 void 254 report(name, which, def) 255 char *name; 256 int which; 257 u_int def; 258 { 259 u_int old, new; 260 char *bp, buf[1024]; 261 262 new = mode.c_cc[which]; 263 old = oldmode.c_cc[which]; 264 265 if (old == new && old == def) 266 return; 267 268 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 269 270 bp = buf; 271 if (tgetstr("kb", &bp) && new == buf[0] && buf[1] == '\0') 272 (void)fprintf(stderr, "backspace.\n"); 273 else if (new == 0177) 274 (void)fprintf(stderr, "delete.\n"); 275 else if (new < 040) { 276 new ^= 0100; 277 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 278 } else if (new == _POSIX_VDISABLE) 279 (void)fprintf(stderr, "<undef>.\n"); 280 else 281 (void)fprintf(stderr, "%c.\n", new); 282 } 283 284 /* 285 * Convert the obsolete argument form into something that getopt can handle. 286 * This means that -e, -i and -k get default arguments supplied for them. 287 */ 288 void 289 obsolete(argv) 290 char *argv[]; 291 { 292 for (; *argv; ++argv) { 293 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 294 (argv[0][1] != 'e' && argv[0][1] != 'i' && 295 argv[0][1] != 'k') || argv[0][2] != '\0') 296 continue; 297 switch(argv[0][1]) { 298 case 'e': 299 argv[0] = "-e^H"; 300 break; 301 case 'i': 302 argv[0] = "-i^C"; 303 break; 304 case 'k': 305 argv[0] = "-k^U"; 306 break; 307 } 308 } 309 } 310 311 void 312 usage() 313 { 314 (void)fprintf(stderr, 315 "usage: %s [-EIQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n", 316 getprogname()); 317 exit(1); 318 } 319
Indexes created Mon Sep 22 21:09:42 GMT 2025