1 /*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Christos Zoulas of Cornell University. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #if !defined(lint) && !defined(SCCSID) 38 static char sccsid[] = "@(#)el.c 8.2 (Berkeley) 1/3/94"; 39 #endif /* not lint && not SCCSID */ 40 41 /* 42 * el.c: EditLine interface functions 43 */ 44 #include "sys.h" 45 46 #include <sys/types.h> 47 #include <sys/param.h> 48 #include <string.h> 49 #include <stdlib.h> 50 #if __STDC__ 51 # include <stdarg.h> 52 #else 53 # include <varargs.h> 54 #endif 55 #include "el.h" 56 57 /* el_init(): 58 * Initialize editline and set default parameters. 59 */ 60 public EditLine * 61 el_init(prog, fin, fout) 62 const char *prog; 63 FILE *fin, *fout; 64 { 65 EditLine *el = (EditLine *) el_malloc(sizeof(EditLine)); 66 #ifdef DEBUG 67 char *tty; 68 #endif 69 70 if (el == NULL) 71 return NULL; 72 73 memset(el, 0, sizeof(EditLine)); 74 75 el->el_infd = fileno(fin); 76 el->el_outfile = fout; 77 el->el_prog = strdup(prog); 78 79 #ifdef DEBUG 80 if ((tty = getenv("DEBUGTTY")) != NULL) { 81 el->el_errfile = fopen(tty, "w"); 82 if (el->el_errfile == NULL) { 83 extern errno; 84 (void) fprintf(stderr, "Cannot open %s (%s).\n", 85 tty, strerror(errno)); 86 return NULL; 87 } 88 } 89 else 90 #endif 91 el->el_errfile = stderr; 92 93 /* 94 * Initialize all the modules. Order is important!!! 95 */ 96 (void) term_init(el); 97 (void) tty_init(el); 98 (void) key_init(el); 99 (void) map_init(el); 100 (void) ch_init(el); 101 (void) search_init(el); 102 (void) hist_init(el); 103 (void) prompt_init(el); 104 (void) sig_init(el); 105 el->el_flags = 0; 106 107 return el; 108 } /* end el_init */ 109 110 111 /* el_end(): 112 * Clean up. 113 */ 114 public void 115 el_end(el) 116 EditLine *el; 117 { 118 if (el == NULL) 119 return; 120 121 el_reset(el); 122 123 term_end(el); 124 tty_end(el); 125 key_end(el); 126 map_end(el); 127 ch_end(el); 128 search_end(el); 129 hist_end(el); 130 prompt_end(el); 131 sig_end(el); 132 133 el_free((ptr_t) el->el_prog); 134 el_free((ptr_t) el); 135 } /* end el_end */ 136 137 138 /* el_reset(): 139 * Reset the tty and the parser 140 */ 141 public void 142 el_reset(el) 143 EditLine *el; 144 { 145 tty_cookedmode(el); 146 ch_reset(el); /* XXX: Do we want that? */ 147 } 148 149 150 /* el_set(): 151 * set the editline parameters 152 */ 153 public int 154 #if __STDC__ 155 el_set(EditLine *el, int op, ...) 156 #else 157 el_set(va_alist) 158 va_dcl 159 #endif 160 { 161 va_list va; 162 int rv; 163 #if __STDC__ 164 va_start(va, op); 165 #else 166 EditLine *el; 167 int op; 168 169 va_start(va); 170 el = va_arg(va, EditLine *); 171 op = va_arg(va, int); 172 #endif 173 174 switch (op) { 175 case EL_PROMPT: 176 rv = prompt_set(el, va_arg(va, el_pfunc_t)); 177 break; 178 179 case EL_TERMINAL: 180 rv = term_set(el, va_arg(va, char *)); 181 break; 182 183 case EL_EDITOR: 184 rv = map_set_editor(el, va_arg(va, char *)); 185 break; 186 187 case EL_SIGNAL: 188 if (va_arg(va, int)) 189 el->el_flags |= HANDLE_SIGNALS; 190 else 191 el->el_flags &= ~HANDLE_SIGNALS; 192 rv = 0; 193 break; 194 195 case EL_BIND: 196 case EL_TELLTC: 197 case EL_SETTC: 198 case EL_ECHOTC: 199 case EL_SETTY: 200 { 201 char *argv[20]; 202 int i; 203 for (i = 1; i < 20; i++) 204 if ((argv[i] = va_arg(va, char *)) == NULL) 205 break; 206 207 switch (op) { 208 case EL_BIND: 209 argv[0] = "bind"; 210 rv = map_bind(el, i, argv); 211 break; 212 213 case EL_TELLTC: 214 argv[0] = "telltc"; 215 rv = term_telltc(el, i, argv); 216 break; 217 218 case EL_SETTC: 219 argv[0] = "settc"; 220 rv = term_settc(el, i, argv); 221 break; 222 223 case EL_ECHOTC: 224 argv[0] = "echotc"; 225 rv = term_echotc(el, i, argv); 226 break; 227 228 case EL_SETTY: 229 argv[0] = "setty"; 230 rv = tty_stty(el, i, argv); 231 break; 232 233 default: 234 rv = -1; 235 abort(); 236 break; 237 } 238 } 239 break; 240 241 case EL_ADDFN: 242 { 243 char *name = va_arg(va, char *); 244 char *help = va_arg(va, char *); 245 el_func_t func = va_arg(va, el_func_t); 246 rv = map_addfunc(el, name, help, func); 247 } 248 break; 249 250 case EL_HIST: 251 { 252 hist_fun_t func = va_arg(va, hist_fun_t); 253 ptr_t ptr = va_arg(va, char *); 254 rv = hist_set(el, func, ptr); 255 } 256 break; 257 258 default: 259 rv = -1; 260 } 261 262 va_end(va); 263 return rv; 264 } /* end el_set */ 265 266 267 /* el_line(): 268 * Return editing info 269 */ 270 public const LineInfo * 271 el_line(el) 272 EditLine *el; 273 { 274 return (const LineInfo *) &el->el_line; 275 } 276 277 static const char elpath[] = "/.editrc"; 278 279 /* el_source(): 280 * Source a file 281 */ 282 public int 283 el_source(el, fname) 284 EditLine *el; 285 const char *fname; 286 { 287 FILE *fp; 288 size_t len; 289 char *ptr, path[MAXPATHLEN]; 290 291 if (fname == NULL) { 292 fname = &elpath[1]; 293 if ((fp = fopen(fname, "r")) == NULL) { 294 if ((ptr = getenv("HOME")) == NULL) 295 return -1; 296 fname = strncpy(path, ptr, MAXPATHLEN); 297 (void) strncat(path, elpath, MAXPATHLEN); 298 path[MAXPATHLEN-1] = '\0'; 299 } 300 } 301 302 if ((fp = fopen(fname, "r")) == NULL) 303 return -1; 304 305 while ((ptr = fgetln(fp, &len)) != NULL) 306 ptr[len - 1] = '\0'; 307 if (parse_line(el, ptr) == -1) { 308 (void) fclose(fp); 309 return -1; 310 } 311 312 (void) fclose(fp); 313 return 0; 314 } 315 316 317 /* el_resize(): 318 * Called from program when terminal is resized 319 */ 320 public void 321 el_resize(el) 322 EditLine *el; 323 { 324 int lins, cols; 325 sigset_t oset, nset; 326 (void) sigemptyset(&nset); 327 (void) sigaddset(&nset, SIGWINCH); 328 (void) sigprocmask(SIG_BLOCK, &nset, &oset); 329 330 /* get the correct window size */ 331 if (term_get_size(el, &lins, &cols)) 332 term_change_size(el, lins, cols); 333 334 (void) sigprocmask(SIG_SETMASK, &oset, NULL); 335 } 336