tset.c revision 1.11
1 /* $NetBSD: tset.c,v 1.11 2000/06/07 13:18:36 simonb 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 1.11 2000/06/07 13:18:36 simonb 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 = win.ws_row; 180 columns = win.ws_col; 181 } else if (win.ws_row == 0 && win.ws_col == 0 && 182 lines > 0 && columns > 0) { 183 win.ws_row = lines; 184 win.ws_col = columns; 185 (void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win); 186 } 187 #endif 188 set_control_chars(); 189 set_conversions(usingupper); 190 191 if (!noinit) 192 set_init(); 193 194 /* Set the modes if they've changed. */ 195 if (memcmp(&mode, &oldmode, sizeof(mode))) 196 tcsetattr(STDERR_FILENO, TCSADRAIN, &mode); 197 } 198 199 /* Get the terminal name from the entry. */ 200 p = tcapbuf; 201 if (p != NULL && *p != ':') { 202 t = p; 203 if ((p = strpbrk(p, "|:")) != NULL) { 204 savech = *p; 205 *p = '\0'; 206 if ((ttype = strdup(t)) == NULL) 207 err(1, "strdup"); 208 *p = savech; 209 } 210 } 211 212 if (noset) 213 (void)printf("%s\n", ttype); 214 else { 215 if (showterm) 216 (void)fprintf(stderr, "Terminal type is %s.\n", ttype); 217 /* 218 * If erase, kill and interrupt characters could have been 219 * modified and not -Q, display the changes. 220 */ 221 if (!quiet) { 222 report("Erase", VERASE, CERASE); 223 report("Kill", VKILL, CKILL); 224 report("Interrupt", VINTR, CINTR); 225 } 226 } 227 228 if (Sflag) { 229 (void)printf("%s ", ttype); 230 wrtermcap(tcapbuf); 231 } 232 233 if (sflag) { 234 /* 235 * Figure out what shell we're using. A hack, we look for an 236 * environmental variable SHELL ending in "csh". 237 */ 238 if ((p = getenv("SHELL")) && 239 !strcmp(p + strlen(p) - 3, "csh")) { 240 p = "set noglob;\nsetenv TERM %s;\nsetenv TERMCAP '"; 241 t = "';\nunset noglob;\n"; 242 } else { 243 p = "TERM=%s;\nTERMCAP='"; 244 t = "';\nexport TERMCAP TERM;\n"; 245 } 246 (void)printf(p, ttype); 247 wrtermcap(tcapbuf); 248 (void)printf(t); 249 } 250 251 exit(0); 252 } 253 254 /* 255 * Tell the user if a control key has been changed from the default value. 256 */ 257 void 258 report(name, which, def) 259 char *name; 260 int which; 261 u_int def; 262 { 263 u_int old, new; 264 char *bp, buf[1024]; 265 266 new = mode.c_cc[which]; 267 old = oldmode.c_cc[which]; 268 269 if (old == new && old == def) 270 return; 271 272 (void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to"); 273 274 bp = buf; 275 if (tgetstr("kb", &bp) && new == buf[0] && buf[1] == '\0') 276 (void)fprintf(stderr, "backspace.\n"); 277 else if (new == 0177) 278 (void)fprintf(stderr, "delete.\n"); 279 else if (new < 040) { 280 new ^= 0100; 281 (void)fprintf(stderr, "control-%c (^%c).\n", new, new); 282 } else if (new == _POSIX_VDISABLE) 283 (void)fprintf(stderr, "<undef>.\n"); 284 else 285 (void)fprintf(stderr, "%c.\n", new); 286 } 287 288 /* 289 * Convert the obsolete argument form into something that getopt can handle. 290 * This means that -e, -i and -k get default arguments supplied for them. 291 */ 292 void 293 obsolete(argv) 294 char *argv[]; 295 { 296 for (; *argv; ++argv) { 297 if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') || 298 (argv[0][1] != 'e' && argv[0][1] != 'i' && 299 argv[0][1] != 'k') || argv[0][2] != '\0') 300 continue; 301 switch(argv[0][1]) { 302 case 'e': 303 argv[0] = "-e^H"; 304 break; 305 case 'i': 306 argv[0] = "-i^C"; 307 break; 308 case 'k': 309 argv[0] = "-k^U"; 310 break; 311 } 312 } 313 } 314 315 void 316 usage() 317 { 318 (void)fprintf(stderr, 319 "usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n"); 320 exit(1); 321 } 322
Indexes created Tue Sep 23 14:10:03 GMT 2025