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 * $NetBSD: el.c,v 1.55 2009/07/25 21:19:23 christos Exp $
35 #if !defined(lint) && !defined(SCCSID)
36 static char sccsid[] = "@(#)el.c 8.2 (Berkeley) 1/3/94";
37 #endif /* not lint && not SCCSID */
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
42 * el.c: EditLine interface functions
46 #include <sys/types.h>
47 #include <sys/param.h>
54 #define HAVE_ISSETUGID
57 * Initialize editline and set default parameters.
60 el_init(const char *prog, FILE *fin, FILE *fout, FILE *ferr)
63 EditLine *el = (EditLine *) el_malloc(sizeof(EditLine));
68 memset(el, 0, sizeof(EditLine));
71 el->el_outfile = fout;
72 el->el_errfile = ferr;
74 el->el_infd = fileno(fin);
76 if ((el->el_prog = el_strdup(prog)) == NULL) {
82 * Initialize all the modules. Order is important!!!
86 if (term_init(el) == -1) {
93 if (tty_init(el) == -1)
94 el->el_flags |= NO_TTY;
96 (void) search_init(el);
98 (void) prompt_init(el);
100 (void) read_init(el);
128 el_free((ptr_t) el->el_prog);
134 * Reset the tty and the parser
137 el_reset(EditLine *el)
141 ch_reset(el, 0); /* XXX: Do we want that? */
146 * set the editline parameters
149 el_set(EditLine *el, int op, ...)
161 el_pfunc_t p = va_arg(ap, el_pfunc_t);
163 rv = prompt_set(el, p, 0, op);
168 case EL_RPROMPT_ESC: {
169 el_pfunc_t p = va_arg(ap, el_pfunc_t);
170 char c = va_arg(ap, int);
172 rv = prompt_set(el, p, c, op);
177 rv = term_set(el, va_arg(ap, char *));
181 rv = map_set_editor(el, va_arg(ap, char *));
186 el->el_flags |= HANDLE_SIGNALS;
188 el->el_flags &= ~HANDLE_SIGNALS;
198 const char *argv[20];
201 for (i = 1; i < 20; i++)
202 if ((argv[i] = va_arg(ap, char *)) == NULL)
208 rv = map_bind(el, i, argv);
213 rv = term_telltc(el, i, argv);
218 rv = term_settc(el, i, argv);
223 rv = term_echotc(el, i, argv);
228 rv = tty_stty(el, i, argv);
233 EL_ABORT((el->el_errfile, "Bad op %d\n", op));
241 char *name = va_arg(ap, char *);
242 char *help = va_arg(ap, char *);
243 el_func_t func = va_arg(ap, el_func_t);
245 rv = map_addfunc(el, name, help, func);
251 hist_fun_t func = va_arg(ap, hist_fun_t);
252 ptr_t ptr = va_arg(ap, char *);
254 rv = hist_set(el, func, ptr);
260 el->el_flags &= ~EDIT_DISABLED;
262 el->el_flags |= EDIT_DISABLED;
268 el_rfunc_t rc = va_arg(ap, el_rfunc_t);
269 rv = el_read_setfn(el, rc);
274 el->el_data = va_arg(ap, void *);
278 rv = va_arg(ap, int);
279 if (rv && !(el->el_flags & UNBUFFERED)) {
280 el->el_flags |= UNBUFFERED;
282 } else if (!rv && (el->el_flags & UNBUFFERED)) {
283 el->el_flags &= ~UNBUFFERED;
290 rv = va_arg(ap, int);
292 (void) tty_rawmode(el);
294 (void) tty_cookedmode(el);
303 what = va_arg(ap, int);
304 fp = va_arg(ap, FILE *);
310 el->el_infd = fileno(fp);
326 re_clear_display(el);
342 * retrieve the editline parameters
345 el_get(EditLine *el, int op, ...)
358 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
359 char *c = va_arg(ap, char *);
361 rv = prompt_get(el, p, c, op);
366 rv = map_get_editor(el, va_arg(ap, const char **));
370 *va_arg(ap, int *) = (el->el_flags & HANDLE_SIGNALS);
375 *va_arg(ap, int *) = !(el->el_flags & EDIT_DISABLED);
380 term_get(el, va_arg(ap, const char **));
386 static char name[] = "gettc";
390 for (i = 1; i < (int)(sizeof(argv) / sizeof(argv[0])); i++)
391 if ((argv[i] = va_arg(ap, char *)) == NULL)
397 rv = term_gettc(el, i, argv);
402 EL_ABORT((el->el_errfile, "Bad op %d\n", op));
411 char *name = va_arg(ap, char *);
412 char *help = va_arg(ap, char *);
413 el_func_t func = va_arg(ap, el_func_t);
415 rv = map_addfunc(el, name, help, func);
421 hist_fun_t func = va_arg(ap, hist_fun_t);
422 ptr_t ptr = va_arg(ap, char *);
423 rv = hist_set(el, func, ptr);
429 *va_arg(ap, el_rfunc_t *) = el_read_getfn(el);
434 *va_arg(ap, void **) = el->el_data;
439 *va_arg(ap, int *) = (!(el->el_flags & UNBUFFERED));
448 what = va_arg(ap, int);
449 fpp = va_arg(ap, FILE **);
453 *fpp = el->el_infile;
456 *fpp = el->el_outfile;
459 *fpp = el->el_errfile;
477 * Set user private data.
480 el_data_set (el, data)
490 * Return user private data.
497 return (el->el_data);
502 * Return editing info
504 public const LineInfo *
505 el_line(EditLine *el)
508 return (const LineInfo *) (void *) &el->el_line;
516 el_source(EditLine *el, const char *fname)
521 #ifdef HAVE_ISSETUGID
522 char path[MAXPATHLEN];
527 #ifdef HAVE_ISSETUGID
528 static const char elpath[] = "/.editrc";
532 if ((ptr = getenv("HOME")) == NULL)
534 if (strlcpy(path, ptr, sizeof(path)) >= sizeof(path))
536 if (strlcat(path, elpath, sizeof(path)) >= sizeof(path))
541 * If issetugid() is missing, always return an error, in order
542 * to keep from inadvertently opening up the user to a security
549 fp = fopen(fname, "r");
553 while ((ptr = fgetln(fp, &len)) != NULL) {
554 if (len > 0 && ptr[len - 1] == '\n')
558 /* loop until first non-space char or EOL */
559 while (*ptr != '\0' && isspace((unsigned char)*ptr))
562 continue; /* ignore, this is a comment line */
564 if (parse_line(el, ptr) == -1) {
576 * Called from program when terminal is resized
579 el_resize(EditLine *el)
584 (void) sigemptyset(&nset);
585 (void) sigaddset(&nset, SIGWINCH);
586 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
588 /* get the correct window size */
589 if (term_get_size(el, &lins, &cols))
590 term_change_size(el, lins, cols);
592 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
597 * Called from the program to beep
600 el_beep(EditLine *el)
608 * Set the state of EDIT_DISABLED from the `edit' command.
612 el_editmode(EditLine *el, int argc, const char **argv)
616 if (argv == NULL || argc != 2 || argv[1] == NULL)
620 if (strcmp(how, "on") == 0) {
621 el->el_flags &= ~EDIT_DISABLED;
623 } else if (strcmp(how, "off") == 0) {
625 el->el_flags |= EDIT_DISABLED;
628 (void) fprintf(el->el_errfile, "edit: Bad value `%s'.\n", how);