1 /* $NetBSD: el.c,v 1.8 1997/12/20 19:15:50 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 1.8 1997/12/20 19:15:50 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 #ifdef __STDC__ 58 # include <stdarg.h> 59 #else 60 # include <varargs.h> 61 #endif 62 #include "el.h" 63 64 /* el_init(): 65 * Initialize editline and set default parameters. 66 */ 67 public EditLine * 68 el_init(prog, fin, fout) 69 const char *prog; 70 FILE *fin, *fout; 71 { 72 EditLine *el = (EditLine *) el_malloc(sizeof(EditLine)); 73 #ifdef DEBUG 74 char *tty; 75 #endif 76 77 if (el == NULL) 78 return NULL; 79 80 memset(el, 0, sizeof(EditLine)); 81 82 el->el_infd = fileno(fin); 83 el->el_outfile = fout; 84 el->el_prog = strdup(prog); 85 86 #ifdef DEBUG 87 if ((tty = getenv("DEBUGTTY")) != NULL) { 88 el->el_errfile = fopen(tty, "w"); 89 if (el->el_errfile == NULL) { 90 extern errno; 91 (void) fprintf(stderr, "Cannot open %s (%s).\n", 92 tty, strerror(errno)); 93 return NULL; 94 } 95 } 96 else 97 #endif 98 el->el_errfile = stderr; 99 100 /* 101 * Initialize all the modules. Order is important!!! 102 */ 103 el->el_flags = 0; 104 (void) term_init(el); 105 if (tty_init(el) == -1) 106 el->el_flags |= NO_TTY; 107 (void) key_init(el); 108 (void) map_init(el); 109 (void) ch_init(el); 110 (void) search_init(el); 111 (void) hist_init(el); 112 (void) prompt_init(el); 113 (void) sig_init(el); 114 115 return el; 116 } /* end el_init */ 117 118 119 /* el_end(): 120 * Clean up. 121 */ 122 public void 123 el_end(el) 124 EditLine *el; 125 { 126 if (el == NULL) 127 return; 128 129 el_reset(el); 130 131 term_end(el); 132 tty_end(el); 133 key_end(el); 134 map_end(el); 135 ch_end(el); 136 search_end(el); 137 hist_end(el); 138 prompt_end(el); 139 sig_end(el); 140 141 el_free((ptr_t) el->el_prog); 142 el_free((ptr_t) el); 143 } /* end el_end */ 144 145 146 /* el_reset(): 147 * Reset the tty and the parser 148 */ 149 public void 150 el_reset(el) 151 EditLine *el; 152 { 153 tty_cookedmode(el); 154 ch_reset(el); /* XXX: Do we want that? */ 155 } 156 157 158 /* el_set(): 159 * set the editline parameters 160 */ 161 public int 162 #ifdef __STDC__ 163 el_set(EditLine *el, int op, ...) 164 #else 165 el_set(va_alist) 166 va_dcl 167 #endif 168 { 169 va_list va; 170 int rv; 171 #ifdef __STDC__ 172 va_start(va, op); 173 #else 174 EditLine *el; 175 int op; 176 177 va_start(va); 178 el = va_arg(va, EditLine *); 179 op = va_arg(va, int); 180 #endif 181 182 switch (op) { 183 case EL_PROMPT: 184 rv = prompt_set(el, va_arg(va, el_pfunc_t)); 185 break; 186 187 case EL_TERMINAL: 188 rv = term_set(el, va_arg(va, char *)); 189 break; 190 191 case EL_EDITOR: 192 rv = map_set_editor(el, va_arg(va, char *)); 193 break; 194 195 case EL_SIGNAL: 196 if (va_arg(va, int)) 197 el->el_flags |= HANDLE_SIGNALS; 198 else 199 el->el_flags &= ~HANDLE_SIGNALS; 200 rv = 0; 201 break; 202 203 case EL_BIND: 204 case EL_TELLTC: 205 case EL_SETTC: 206 case EL_ECHOTC: 207 case EL_SETTY: 208 { 209 char *argv[20]; 210 int i; 211 for (i = 1; i < 20; i++) 212 if ((argv[i] = va_arg(va, char *)) == NULL) 213 break; 214 215 switch (op) { 216 case EL_BIND: 217 argv[0] = "bind"; 218 rv = map_bind(el, i, argv); 219 break; 220 221 case EL_TELLTC: 222 argv[0] = "telltc"; 223 rv = term_telltc(el, i, argv); 224 break; 225 226 case EL_SETTC: 227 argv[0] = "settc"; 228 rv = term_settc(el, i, argv); 229 break; 230 231 case EL_ECHOTC: 232 argv[0] = "echotc"; 233 rv = term_echotc(el, i, argv); 234 break; 235 236 case EL_SETTY: 237 argv[0] = "setty"; 238 rv = tty_stty(el, i, argv); 239 break; 240 241 default: 242 rv = -1; 243 abort(); 244 break; 245 } 246 } 247 break; 248 249 case EL_ADDFN: 250 { 251 char *name = va_arg(va, char *); 252 char *help = va_arg(va, char *); 253 el_func_t func = va_arg(va, el_func_t); 254 rv = map_addfunc(el, name, help, func); 255 } 256 break; 257 258 case EL_HIST: 259 { 260 hist_fun_t func = va_arg(va, hist_fun_t); 261 ptr_t ptr = va_arg(va, char *); 262 rv = hist_set(el, func, ptr); 263 } 264 break; 265 266 default: 267 rv = -1; 268 } 269 270 va_end(va); 271 return rv; 272 } /* end el_set */ 273 274 275 /* el_line(): 276 * Return editing info 277 */ 278 public const LineInfo * 279 el_line(el) 280 EditLine *el; 281 { 282 return (const LineInfo *) &el->el_line; 283 } 284 285 static const char elpath[] = "/.editrc"; 286 287 /* el_source(): 288 * Source a file 289 */ 290 public int 291 el_source(el, fname) 292 EditLine *el; 293 const char *fname; 294 { 295 FILE *fp; 296 size_t len; 297 char *ptr, path[MAXPATHLEN]; 298 299 if (fname == NULL) { 300 fname = &elpath[1]; 301 if ((fp = fopen(fname, "r")) == NULL) { 302 if ((ptr = getenv("HOME")) == NULL) 303 return -1; 304 (void)snprintf(path, sizeof(path), "%s%s", ptr, elpath); 305 fname = path; 306 } 307 } 308 309 if ((fp = fopen(fname, "r")) == NULL) 310 return -1; 311 312 while ((ptr = fgetln(fp, &len)) != NULL) { 313 if (ptr[len - 1] == '\n') 314 --len; 315 ptr[len] = '\0'; 316 if (parse_line(el, ptr) == -1) { 317 (void) fclose(fp); 318 return -1; 319 } 320 } 321 322 (void) fclose(fp); 323 return 0; 324 } 325 326 327 /* el_resize(): 328 * Called from program when terminal is resized 329 */ 330 public void 331 el_resize(el) 332 EditLine *el; 333 { 334 int lins, cols; 335 sigset_t oset, nset; 336 (void) sigemptyset(&nset); 337 (void) sigaddset(&nset, SIGWINCH); 338 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 339 340 /* get the correct window size */ 341 if (term_get_size(el, &lins, &cols)) 342 term_change_size(el, lins, cols); 343 344 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 345 } 346