tset.c revision 1.10
1 /* $NetBSD: tset.c,v 1.10 2000/05/31 05:50:06 blymn 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)tset.c 8.1 (Berkeley) 6/9/93"; 45 #endif 46 __RCSID("$NetBSD: tset.c,v 1.10 2000/05/31 05:50:06 blymn Exp $"); 47 #endif /* not lint */ 48 49 #include <sys/types.h> 50 #include <sys/ioctl.h> 51 #include <ctype.h> 52 #include <err.h> 53 #include <errno.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <termcap.h> 58 #include <termios.h> 59 #include <unistd.h> 60 #include "extern.h" 61 62 int main __P((int, char *[])); 63 void obsolete __P((char *[])); 64 void report __P((char *, int, u_int)); 65 void usage __P((void)); 66 67 struct termios mode, oldmode; 68 69 int erasechar; /* new erase character */ 70 int intrchar; /* new interrupt character */ 71 int isreset; /* invoked as reset */ 72 int killchar; /* new kill character */ 73 int lines, columns; /* window size */ 74 75 int 76 main(argc, argv) 77 int argc; 78 char *argv[]; 79 { 80 #ifdef TIOCGWINSZ 81 struct winsize win; 82 #endif 83 int ch, extended, noinit, noset, quiet, Sflag, sflag, showterm; 84 int usingupper; 85 char savech, *p, *t, *tcapbuf; 86 const char *ttype; 87 88 if (tcgetattr(STDERR_FILENO, &mode) < 0) 89 err(1, "standard error"); 90 91 oldmode = mode; 92 ospeed = cfgetospeed(&mode); 93 94 if ((p = strrchr(*argv, '/')) != NULL) 95 ++p; 96 else 97 p = *argv; 98 usingupper = isupper((unsigned char)*p); 99 if (!strcasecmp(p, "reset")) { 100 isreset = 1; 101 reset_mode(); 102 } 103 104 obsolete(argv); 105 noinit = noset = quiet = Sflag = sflag = showterm = extended = 0; 106 while ((ch = getopt(argc, argv, "-a:d:e:EIi:k:m:np:QSrs")) != -1) { 107 switch (ch) { 108 case '-': /* display term only */ 109 noset = 1; 110 break; 111 case 'a': /* OBSOLETE: map identifier to type */ 112 add_mapping("arpanet", optarg); 113 break; 114 case 'd': /* OBSOLETE: map identifier to type */ 115 add_mapping("dialup", optarg); 116 break; 117 case 'e': /* erase character */ 118 erasechar = optarg[0] == '^' && optarg[1] != '\0' ? 119 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 120 optarg[0]; 121 break; 122 case 'E': 123 extended = 1; 124 break; 125 case 'I': /* no initialization strings */ 126 noinit = 1; 127 break; 128 case 'i': /* interrupt character */ 129 intrchar = optarg[0] == '^' && optarg[1] != '\0' ? 130 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 131 optarg[0]; 132 break; 133 case 'k': /* kill character */ 134 killchar = optarg[0] == '^' && optarg[1] != '\0' ? 135 optarg[1] == '?' ? '\177' : CTRL(optarg[1]) : 136 optarg[0]; 137 break; 138 case 'm': /* map identifier to type */ 139 add_mapping(NULL, optarg); 140 break; 141 case 'n': /* OBSOLETE: set new tty driver */ 142 break; 143 case 'p': /* OBSOLETE: map identifier to type */ 144 add_mapping("plugboard", optarg); 145 break; 146 case 'Q': /* don't output control key settings */ 147 quiet = 1; 148 break; 149 case 'S': /* output TERM/TERMCAP strings */ 150 Sflag = 1; 151 break; 152 case 'r': /* display term on stderr */ 153 showterm = 1; 154 break; 155 case 's': /* output TERM/TERMCAP strings */ 156 sflag = 1; 157 break; 158 case '?': 159 default: 160 usage(); 161 } 162 } 163 argc -= optind; 164 argv += optind; 165 166 if (argc > 1) 167 usage(); 168 169 ttype = get_termcap_entry(*argv, &tcapbuf, extended); 170 171 if (!noset) { 172 columns = tgetnum("co"); 173 lines = tgetnum("li"); 174 175 #ifdef TIOCGWINSZ 176 /* Set window size */ 177 (void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win); 178 if (win.ws_row == 0 && win.ws_col == 0 && 179 lines > 0 && columns > 0) { 180 win.ws_row = lines; 181 win.ws_col = columns; 182 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 183 } 184 #endif 185 set_control_chars(); 186 set_conversions(usingupper); 187 188 if (!noinit) 189 set_init(); 190 191 /* Set the modes if they've changed. */ 192 if (memcmp(&mode, &oldmode, sizeof(mode))) 193 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 194 } 195 196 /* Get the terminal name from the entry. */ 197 p = tcapbuf; 198 if (p != NULL && *p != ':') { 199 t = p; 200 if ((p = strpbrk(p, "|:")) != NULL) { 201 savech = *p; 202 *p = '\0'; 203 if ((ttype = strdup(t)) == NULL) 204 err(1, "strdup"); 205 *p = savech; 206 } 207 } 208 209 if (noset) 210 (void)printf("%s\n", ttype); 211 else { 212 if (showterm) 213 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 214 /* 215 * If erase, kill and interrupt characters could have been 216 * modified and not -Q, display the changes. 217 */ 218 if (!quiet) { 219 report("Erase", VERASE, CERASE); 220 report("Kill", VKILL, CKILL); 221 report("Interrupt", VINTR, CINTR); 222 } 223 } 224 225 if (Sflag) { 226 (void)printf("%s ", ttype); 227 wrtermcap(tcapbuf); 228 } 229 230 if (sflag) { 231 /* 232 * Figure out what shell we're using. A hack, we look for an 233 * environmental variable SHELL ending in "csh". 234 */ 235 if ((p = getenv("SHELL")) && 236 !strcmp(p + strlen(p) - 3, "csh")) { 237 p = "set noglob;\nsetenv TERM %s;\nsetenv TERMCAP '"; 238 t = "';\nunset noglob;\n"; 239 } else { 240 p = "TERM=%s;\nTERMCAP='"; 241 t = "';\nexport TERMCAP TERM;\n"; 242 } 243 (void)printf(p, ttype); 244 wrtermcap(tcapbuf); 245 (void)printf(t); 246 } 247 248 exit(0); 249 } 250 251 /* 252 * Tell the user if a control key has been changed from the default value. 253 */ 254 void 255 report(name, which, def) 256 char *name; 257 int which; 258 u_int def; 259 { 260 u_int old, new; 261 char *bp, buf[1024]; 262 263 new = mode.c_cc[which]; 264 old = oldmode.c_cc[which]; 265 266 if (old == new && old == def) 267 return; 268 269 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 270 271 bp = buf; 272 if (tgetstr("kb", &bp) && new == buf[0] && buf[1] == '\0') 273 (void)fprintf(stderr, "backspace.\n"); 274 else if (new == 0177) 275 (void)fprintf(stderr, "delete.\n"); 276 else if (new < 040) { 277 new ^= 0100; 278 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 279 } else if (new == _POSIX_VDISABLE) 280 (void)fprintf(stderr, "<undef>.\n"); 281 else 282 (void)fprintf(stderr, "%c.\n", new); 283 } 284 285 /* 286 * Convert the obsolete argument form into something that getopt can handle. 287 * This means that -e, -i and -k get default arguments supplied for them. 288 */ 289 void 290 obsolete(argv) 291 char *argv[]; 292 { 293 for (; *argv; ++argv) { 294 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 295 (argv[0][1] != 'e' && argv[0][1] != 'i' && 296 argv[0][1] != 'k') || argv[0][2] != '\0') 297 continue; 298 switch(argv[0][1]) { 299 case 'e': 300 argv[0] = "-e^H"; 301 break; 302 case 'i': 303 argv[0] = "-i^C"; 304 break; 305 case 'k': 306 argv[0] = "-k^U"; 307 break; 308 } 309 } 310 } 311 312 void 313 usage() 314 { 315 (void)fprintf(stderr, 316 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n"); 317 exit(1); 318 } 319
Indexes created Mon Sep 22 21:09:42 GMT 2025