2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Christos Zoulas of Cornell University.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#)el.c 8.2 (Berkeley) 1/3/94
33 * $NetBSD: el.c,v 1.45 2008/04/05 15:53:28 christos Exp $
34 * $DragonFly: src/lib/libedit/el.c,v 1.7 2008/05/17 22:48:04 pavalos Exp $
40 * el.c: EditLine interface functions
42 #include <sys/types.h>
43 #include <sys/param.h>
50 * Initialize editline and set default parameters.
53 el_init(const char *prog, FILE *fin, FILE *fout, FILE *ferr)
56 EditLine *el = (EditLine *) el_malloc(sizeof(EditLine));
61 memset(el, 0, sizeof(EditLine));
64 el->el_outfile = fout;
65 el->el_errfile = ferr;
67 el->el_infd = fileno(fin);
69 if ((el->el_prog = el_strdup(prog)) == NULL) {
75 * Initialize all the modules. Order is important!!!
79 if (term_init(el) == -1) {
86 if (tty_init(el) == -1)
87 el->el_flags |= NO_TTY;
89 (void) search_init(el);
91 (void) prompt_init(el);
121 el_free((ptr_t) el->el_prog);
127 * Reset the tty and the parser
130 el_reset(EditLine *el)
134 ch_reset(el, 0); /* XXX: Do we want that? */
139 * set the editline parameters
142 el_set(EditLine *el, int op, ...)
154 rv = prompt_set(el, va_arg(ap, el_pfunc_t), op);
158 rv = term_set(el, va_arg(ap, char *));
162 rv = map_set_editor(el, va_arg(ap, char *));
167 el->el_flags |= HANDLE_SIGNALS;
169 el->el_flags &= ~HANDLE_SIGNALS;
179 const char *argv[20];
182 for (i = 1; i < 20; i++)
183 if ((argv[i] = va_arg(ap, char *)) == NULL)
189 rv = map_bind(el, i, argv);
194 rv = term_telltc(el, i, argv);
199 rv = term_settc(el, i, argv);
204 rv = term_echotc(el, i, argv);
209 rv = tty_stty(el, i, argv);
214 EL_ABORT((el->el_errfile, "Bad op %d\n", op));
222 char *name = va_arg(ap, char *);
223 char *help = va_arg(ap, char *);
224 el_func_t func = va_arg(ap, el_func_t);
226 rv = map_addfunc(el, name, help, func);
232 hist_fun_t func = va_arg(ap, hist_fun_t);
233 ptr_t ptr = va_arg(ap, char *);
235 rv = hist_set(el, func, ptr);
241 el->el_flags &= ~EDIT_DISABLED;
243 el->el_flags |= EDIT_DISABLED;
249 el_rfunc_t rc = va_arg(ap, el_rfunc_t);
250 rv = el_read_setfn(el, rc);
255 el->el_data = va_arg(ap, void *);
259 rv = va_arg(ap, int);
260 if (rv && !(el->el_flags & UNBUFFERED)) {
261 el->el_flags |= UNBUFFERED;
263 } else if (!rv && (el->el_flags & UNBUFFERED)) {
264 el->el_flags &= ~UNBUFFERED;
271 rv = va_arg(ap, int);
273 (void) tty_rawmode(el);
275 (void) tty_cookedmode(el);
284 what = va_arg(ap, int);
285 fp = va_arg(ap, FILE *);
291 el->el_infd = fileno(fp);
307 re_clear_display(el);
323 * retrieve the editline parameters
326 el_get(EditLine *el, int op, ...)
339 rv = prompt_get(el, va_arg(ap, el_pfunc_t *), op);
343 rv = map_get_editor(el, va_arg(ap, const char **));
347 *va_arg(ap, int *) = (el->el_flags & HANDLE_SIGNALS);
352 *va_arg(ap, int *) = !(el->el_flags & EDIT_DISABLED);
357 term_get(el, va_arg(ap, const char **));
363 static char name[] = "gettc";
367 for (i = 1; i < sizeof(argv) / sizeof(argv[0]); i++)
368 if ((argv[i] = va_arg(ap, char *)) == NULL)
374 rv = term_gettc(el, i, argv);
379 EL_ABORT((el->el_errfile, "Bad op %d\n", op));
388 char *name = va_arg(ap, char *);
389 char *help = va_arg(ap, char *);
390 el_func_t func = va_arg(ap, el_func_t);
392 rv = map_addfunc(el, name, help, func);
398 hist_fun_t func = va_arg(ap, hist_fun_t);
399 ptr_t ptr = va_arg(ap, char *);
400 rv = hist_set(el, func, ptr);
406 *va_arg(ap, el_rfunc_t *) = el_read_getfn(el);
411 *va_arg(ap, void **) = el->el_data;
416 *va_arg(ap, int *) = (!(el->el_flags & UNBUFFERED));
425 what = va_arg(ap, int);
426 fpp = va_arg(ap, FILE **);
430 *fpp = el->el_infile;
433 *fpp = el->el_outfile;
436 *fpp = el->el_errfile;
455 * Return editing info
457 public const LineInfo *
458 el_line(EditLine *el)
461 return (const LineInfo *) (void *) &el->el_line;
469 el_source(EditLine *el, const char *fname)
477 #ifdef HAVE_ISSETUGID
478 static const char elpath[] = "/.editrc";
479 char path[MAXPATHLEN];
483 if ((ptr = getenv("HOME")) == NULL)
485 if (strlcpy(path, ptr, sizeof(path)) >= sizeof(path))
487 if (strlcat(path, elpath, sizeof(path)) >= sizeof(path))
492 * If issetugid() is missing, always return an error, in order
493 * to keep from inadvertently opening up the user to a security
500 fp = fopen(fname, "r");
504 while ((ptr = fgetln(fp, &len)) != NULL) {
505 if (len > 0 && ptr[len - 1] == '\n')
508 if (parse_line(el, ptr) == -1) {
520 * Called from program when terminal is resized
523 el_resize(EditLine *el)
528 (void) sigemptyset(&nset);
529 (void) sigaddset(&nset, SIGWINCH);
530 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
532 /* get the correct window size */
533 if (term_get_size(el, &lins, &cols))
534 term_change_size(el, lins, cols);
536 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
541 * Called from the program to beep
544 el_beep(EditLine *el)
552 * Set the state of EDIT_DISABLED from the `edit' command.
556 el_editmode(EditLine *el, int argc, const char **argv)
560 if (argv == NULL || argc != 2 || argv[1] == NULL)
564 if (strcmp(how, "on") == 0) {
565 el->el_flags &= ~EDIT_DISABLED;
567 } else if (strcmp(how, "off") == 0) {
569 el->el_flags |= EDIT_DISABLED;
572 (void) fprintf(el->el_errfile, "edit: Bad value `%s'.\n", how);