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 1.39 2004/07/08 00:51:36 christos Exp $
34 * $DragonFly: src/lib/libedit/el.c,v 1.5 2005/11/13 11:58:30 corecode 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));
63 el->el_infd = fileno(fin);
64 el->el_outfile = fout;
65 el->el_errfile = ferr;
66 if ((el->el_prog = el_strdup(prog)) == NULL) {
72 * Initialize all the modules. Order is important!!!
76 if (term_init(el) == -1) {
83 if (tty_init(el) == -1)
84 el->el_flags |= NO_TTY;
86 (void) search_init(el);
88 (void) prompt_init(el);
118 el_free((ptr_t) el->el_prog);
124 * Reset the tty and the parser
127 el_reset(EditLine *el)
131 ch_reset(el); /* XXX: Do we want that? */
136 * set the editline parameters
139 el_set(EditLine *el, int op, ...)
151 rv = prompt_set(el, va_arg(va, el_pfunc_t), op);
155 rv = term_set(el, va_arg(va, char *));
159 rv = map_set_editor(el, va_arg(va, char *));
164 el->el_flags |= HANDLE_SIGNALS;
166 el->el_flags &= ~HANDLE_SIGNALS;
175 const char *argv[20];
178 for (i = 1; i < 20; i++)
179 if ((argv[i] = va_arg(va, char *)) == NULL)
185 rv = map_bind(el, i, argv);
190 rv = term_telltc(el, i, argv);
195 rv = term_settc(el, i, argv);
200 rv = term_echotc(el, i, argv);
205 rv = tty_stty(el, i, argv);
210 EL_ABORT((el->el_errfile, "Bad op %d\n", op));
218 char *name = va_arg(va, char *);
219 char *help = va_arg(va, char *);
220 el_func_t func = va_arg(va, el_func_t);
222 rv = map_addfunc(el, name, help, func);
228 hist_fun_t func = va_arg(va, hist_fun_t);
229 ptr_t ptr = va_arg(va, char *);
231 rv = hist_set(el, func, ptr);
237 el->el_flags &= ~EDIT_DISABLED;
239 el->el_flags |= EDIT_DISABLED;
245 el_rfunc_t rc = va_arg(va, el_rfunc_t);
246 rv = el_read_setfn(el, rc);
251 el->el_data = va_arg(va, void *);
255 rv = va_arg(va, int);
256 if (rv && !(el->el_flags & UNBUFFERED)) {
257 el->el_flags |= UNBUFFERED;
259 } else if (!rv && (el->el_flags & UNBUFFERED)) {
260 el->el_flags &= ~UNBUFFERED;
267 rv = va_arg(va, int);
269 (void) tty_rawmode(el);
271 (void) tty_cookedmode(el);
286 * retrieve the editline parameters
289 el_get(EditLine *el, int op, void *ret)
293 if (el == NULL || ret == NULL)
298 rv = prompt_get(el, (void *) &ret, op);
302 rv = map_get_editor(el, (void *) &ret);
306 *((int *) ret) = (el->el_flags & HANDLE_SIGNALS);
311 *((int *) ret) = (!(el->el_flags & EDIT_DISABLED));
316 term_get(el, (const char **)ret);
327 const char *argv[20];
330 for (i = 1; i < sizeof(argv) / sizeof(argv[0]); i++)
331 if ((argv[i] = va_arg(va, char *)) == NULL)
337 rv = map_bind(el, i, argv);
342 rv = term_telltc(el, i, argv);
347 rv = term_settc(el, i, argv);
352 rv = term_echotc(el, i, argv);
357 rv = tty_stty(el, i, argv);
362 EL_ABORT((el->errfile, "Bad op %d\n", op));
370 char *name = va_arg(va, char *);
371 char *help = va_arg(va, char *);
372 el_func_t func = va_arg(va, el_func_t);
374 rv = map_addfunc(el, name, help, func);
380 hist_fun_t func = va_arg(va, hist_fun_t);
381 ptr_t ptr = va_arg(va, char *);
382 rv = hist_set(el, func, ptr);
388 *((el_rfunc_t *)ret) = el_read_getfn(el);
393 *((void **)ret) = el->el_data;
398 *((int *) ret) = (!(el->el_flags & UNBUFFERED));
411 * Return editing info
413 public const LineInfo *
414 el_line(EditLine *el)
417 return (const LineInfo *) (void *) &el->el_line;
425 el_source(EditLine *el, const char *fname)
433 #ifdef HAVE_ISSETUGID
434 static const char elpath[] = "/.editrc";
435 char path[MAXPATHLEN];
439 if ((ptr = getenv("HOME")) == NULL)
441 if (strlcpy(path, ptr, sizeof(path)) >= sizeof(path))
443 if (strlcat(path, elpath, sizeof(path)) >= sizeof(path))
448 * If issetugid() is missing, always return an error, in order
449 * to keep from inadvertently opening up the user to a security
456 fp = fopen(fname, "r");
460 while ((ptr = fgetln(fp, &len)) != NULL) {
461 if (len > 0 && ptr[len - 1] == '\n')
464 if (parse_line(el, ptr) == -1) {
476 * Called from program when terminal is resized
479 el_resize(EditLine *el)
484 (void) sigemptyset(&nset);
485 (void) sigaddset(&nset, SIGWINCH);
486 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
488 /* get the correct window size */
489 if (term_get_size(el, &lins, &cols))
490 term_change_size(el, lins, cols);
492 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
497 * Called from the program to beep
500 el_beep(EditLine *el)
508 * Set the state of EDIT_DISABLED from the `edit' command.
512 el_editmode(EditLine *el, int argc, const char **argv)
516 if (argv == NULL || argc != 2 || argv[1] == NULL)
520 if (strcmp(how, "on") == 0) {
521 el->el_flags &= ~EDIT_DISABLED;
523 } else if (strcmp(how, "off") == 0) {
525 el->el_flags |= EDIT_DISABLED;
528 (void) fprintf(el->el_errfile, "edit: Bad value `%s'.\n", how);