1 /* $NetBSD: el.c,v 1.21 2001/01/05 22:45:30 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Christos Zoulas of Cornell University. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #if !defined(lint) && !defined(SCCSID) 41 #if 0 42 static char sccsid[] = "@(#)el.c 8.2 (Berkeley) 1/3/94"; 43 #else 44 __RCSID("$NetBSD: el.c,v 1.21 2001/01/05 22:45:30 christos Exp $"); 45 #endif 46 #endif /* not lint && not SCCSID */ 47 48 /* 49 * el.c: EditLine interface functions 50 */ 51 #include "sys.h" 52 53 #include <sys/types.h> 54 #include <sys/param.h> 55 #include <string.h> 56 #include <stdlib.h> 57 #include <stdarg.h> 58 #include "el.h" 59 60 /* el_init(): 61 * Initialize editline and set default parameters. 62 */ 63 public EditLine * 64 el_init(const char *prog, FILE *fin, FILE *fout, FILE *ferr) 65 { 66 67 EditLine *el = (EditLine *) el_malloc(sizeof(EditLine)); 68 #ifdef DEBUG 69 char *tty; 70 #endif 71 72 if (el == NULL) 73 return (NULL); 74 75 memset(el, 0, sizeof(EditLine)); 76 77 el->el_infd = fileno(fin); 78 el->el_outfile = fout; 79 el->el_errfile = ferr; 80 el->el_prog = strdup(prog); 81 82 /* 83 * Initialize all the modules. Order is important!!! 84 */ 85 el->el_flags = 0; 86 87 (void) term_init(el); 88 (void) key_init(el); 89 (void) map_init(el); 90 if (tty_init(el) == -1) 91 el->el_flags |= NO_TTY; 92 (void) ch_init(el); 93 (void) search_init(el); 94 (void) hist_init(el); 95 (void) prompt_init(el); 96 (void) sig_init(el); 97 98 return (el); 99 } 100 101 102 /* el_end(): 103 * Clean up. 104 */ 105 public void 106 el_end(EditLine *el) 107 { 108 109 if (el == NULL) 110 return; 111 112 el_reset(el); 113 114 term_end(el); 115 key_end(el); 116 map_end(el); 117 tty_end(el); 118 ch_end(el); 119 search_end(el); 120 hist_end(el); 121 prompt_end(el); 122 sig_end(el); 123 124 el_free((ptr_t) el->el_prog); 125 el_free((ptr_t) el); 126 } 127 128 129 /* el_reset(): 130 * Reset the tty and the parser 131 */ 132 public void 133 el_reset(EditLine *el) 134 { 135 136 tty_cookedmode(el); 137 ch_reset(el); /* XXX: Do we want that? */ 138 } 139 140 141 /* el_set(): 142 * set the editline parameters 143 */ 144 public int 145 el_set(EditLine *el, int op, ...) 146 { 147 va_list va; 148 int rv; 149 va_start(va, op); 150 151 if (el == NULL) 152 return (-1); 153 switch (op) { 154 case EL_PROMPT: 155 case EL_RPROMPT: 156 rv = prompt_set(el, va_arg(va, el_pfunc_t), op); 157 break; 158 159 case EL_TERMINAL: 160 rv = term_set(el, va_arg(va, char *)); 161 break; 162 163 case EL_EDITOR: 164 rv = map_set_editor(el, va_arg(va, char *)); 165 break; 166 167 case EL_SIGNAL: 168 if (va_arg(va, int)) 169 el->el_flags |= HANDLE_SIGNALS; 170 else 171 el->el_flags &= ~HANDLE_SIGNALS; 172 rv = 0; 173 break; 174 175 case EL_BIND: 176 case EL_TELLTC: 177 case EL_SETTC: 178 case EL_ECHOTC: 179 case EL_SETTY: 180 { 181 char *argv[20]; 182 int i; 183 184 for (i = 1; i < 20; i++) 185 if ((argv[i] = va_arg(va, char *)) == NULL) 186 break; 187 188 switch (op) { 189 case EL_BIND: 190 argv[0] = "bind"; 191 rv = map_bind(el, i, argv); 192 break; 193 194 case EL_TELLTC: 195 argv[0] = "telltc"; 196 rv = term_telltc(el, i, argv); 197 break; 198 199 case EL_SETTC: 200 argv[0] = "settc"; 201 rv = term_settc(el, i, argv); 202 break; 203 204 case EL_ECHOTC: 205 argv[0] = "echotc"; 206 rv = term_echotc(el, i, argv); 207 break; 208 209 case EL_SETTY: 210 argv[0] = "setty"; 211 rv = tty_stty(el, i, argv); 212 break; 213 214 default: 215 rv = -1; 216 EL_ABORT((el->el_errfile, "Bad op %d\n", op)); 217 break; 218 } 219 break; 220 } 221 222 case EL_ADDFN: 223 { 224 char *name = va_arg(va, char *); 225 char *help = va_arg(va, char *); 226 el_func_t func = va_arg(va, el_func_t); 227 228 rv = map_addfunc(el, name, help, func); 229 break; 230 } 231 232 case EL_HIST: 233 { 234 hist_fun_t func = va_arg(va, hist_fun_t); 235 ptr_t ptr = va_arg(va, char *); 236 237 rv = hist_set(el, func, ptr); 238 break; 239 } 240 241 case EL_EDITMODE: 242 if (va_arg(va, int)) 243 el->el_flags &= ~EDIT_DISABLED; 244 else 245 el->el_flags |= EDIT_DISABLED; 246 rv = 0; 247 break; 248 249 default: 250 rv = -1; 251 } 252 253 va_end(va); 254 return (rv); 255 } 256 257 258 /* el_get(): 259 * retrieve the editline parameters 260 */ 261 public int 262 el_get(EditLine *el, int op, void *ret) 263 { 264 int rv; 265 266 if (el == NULL || ret == NULL) 267 return (-1); 268 switch (op) { 269 case EL_PROMPT: 270 case EL_RPROMPT: 271 rv = prompt_get(el, (el_pfunc_t *) & ret, op); 272 break; 273 274 case EL_EDITOR: 275 rv = map_get_editor(el, (const char **) &ret); 276 break; 277 278 case EL_SIGNAL: 279 *((int *) ret) = (el->el_flags & HANDLE_SIGNALS); 280 rv = 0; 281 break; 282 283 case EL_EDITMODE: 284 *((int *) ret) = (!(el->el_flags & EDIT_DISABLED)); 285 rv = 0; 286 break; 287 288 #if 0 /* XXX */ 289 case EL_TERMINAL: 290 rv = term_get(el, (const char *) &ret); 291 break; 292 293 case EL_BIND: 294 case EL_TELLTC: 295 case EL_SETTC: 296 case EL_ECHOTC: 297 case EL_SETTY: 298 { 299 char *argv[20]; 300 int i; 301 302 for (i = 1; i < 20; i++) 303 if ((argv[i] = va_arg(va, char *)) == NULL) 304 break; 305 306 switch (op) { 307 case EL_BIND: 308 argv[0] = "bind"; 309 rv = map_bind(el, i, argv); 310 break; 311 312 case EL_TELLTC: 313 argv[0] = "telltc"; 314 rv = term_telltc(el, i, argv); 315 break; 316 317 case EL_SETTC: 318 argv[0] = "settc"; 319 rv = term_settc(el, i, argv); 320 break; 321 322 case EL_ECHOTC: 323 argv[0] = "echotc"; 324 rv = term_echotc(el, i, argv); 325 break; 326 327 case EL_SETTY: 328 argv[0] = "setty"; 329 rv = tty_stty(el, i, argv); 330 break; 331 332 default: 333 rv = -1; 334 EL_ABORT((el->errfile, "Bad op %d\n", op)); 335 break; 336 } 337 break; 338 } 339 340 case EL_ADDFN: 341 { 342 char *name = va_arg(va, char *); 343 char *help = va_arg(va, char *); 344 el_func_t func = va_arg(va, el_func_t); 345 346 rv = map_addfunc(el, name, help, func); 347 break; 348 } 349 350 case EL_HIST: 351 { 352 hist_fun_t func = va_arg(va, hist_fun_t); 353 ptr_t ptr = va_arg(va, char *); 354 rv = hist_set(el, func, ptr); 355 } 356 break; 357 #endif /* XXX */ 358 359 default: 360 rv = -1; 361 } 362 363 return (rv); 364 } 365 366 367 /* el_line(): 368 * Return editing info 369 */ 370 public const LineInfo * 371 el_line(EditLine *el) 372 { 373 374 return (const LineInfo *) (void *) &el->el_line; 375 } 376 377 static const char elpath[] = "/.editrc"; 378 379 /* el_source(): 380 * Source a file 381 */ 382 public int 383 el_source(EditLine *el, const char *fname) 384 { 385 FILE *fp; 386 size_t len; 387 char *ptr, path[MAXPATHLEN]; 388 389 fp = NULL; 390 if (fname == NULL) { 391 if (issetugid()) 392 return (-1); 393 if ((ptr = getenv("HOME")) == NULL) 394 return (-1); 395 if (strlcpy(path, ptr, sizeof(path)) >= sizeof(path)) 396 return (-1); 397 if (strlcat(path, elpath, sizeof(path)) >= sizeof(path)) 398 return (-1); 399 fname = path; 400 } 401 if (fp == NULL) 402 fp = fopen(fname, "r"); 403 if (fp == NULL) 404 return (-1); 405 406 while ((ptr = fgetln(fp, &len)) != NULL) { 407 if (len > 0 && ptr[len - 1] == '\n') 408 --len; 409 ptr[len] = '\0'; 410 if (parse_line(el, ptr) == -1) { 411 (void) fclose(fp); 412 return (-1); 413 } 414 } 415 416 (void) fclose(fp); 417 return (0); 418 } 419 420 421 /* el_resize(): 422 * Called from program when terminal is resized 423 */ 424 public void 425 el_resize(EditLine *el) 426 { 427 int lins, cols; 428 sigset_t oset, nset; 429 430 (void) sigemptyset(&nset); 431 (void) sigaddset(&nset, SIGWINCH); 432 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 433 434 /* get the correct window size */ 435 if (term_get_size(el, &lins, &cols)) 436 term_change_size(el, lins, cols); 437 438 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 439 } 440 441 442 /* el_beep(): 443 * Called from the program to beep 444 */ 445 public void 446 el_beep(EditLine *el) 447 { 448 449 term_beep(el); 450 } 451 452 453 /* el_editmode() 454 * Set the state of EDIT_DISABLED from the `edit' command. 455 */ 456 protected int 457 /*ARGSUSED*/ 458 el_editmode(EditLine *el, int argc, char **argv) 459 { 460 const char *how; 461 462 if (argv == NULL || argc != 2 || argv[1] == NULL) 463 return (-1); 464 465 how = argv[1]; 466 if (strcmp(how, "on") == 0) 467 el->el_flags &= ~EDIT_DISABLED; 468 else if (strcmp(how, "off") == 0) 469 el->el_flags |= EDIT_DISABLED; 470 else { 471 (void) fprintf(el->el_errfile, "edit: Bad value `%s'.\n", how); 472 return (-1); 473 } 474 return (0); 475 } 476