1 /* $NetBSD: el.c,v 1.70 2012/03/11 21:14:56 christos Exp $ */
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Christos Zoulas of Cornell University.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #if !defined(lint) && !defined(SCCSID)
38 static char sccsid[] = "@(#)el.c 8.2 (Berkeley) 1/3/94";
40 __RCSID("$NetBSD: el.c,v 1.70 2012/03/11 21:14:56 christos Exp $");
42 #endif /* not lint && not SCCSID */
45 * el.c: EditLine interface functions
47 #include <sys/types.h>
48 #include <sys/param.h>
58 * Initialize editline and set default parameters.
61 el_init(const char *prog, FILE *fin, FILE *fout, FILE *ferr)
63 EditLine *el = el_malloc(sizeof(*el));
68 memset(el, 0, sizeof(EditLine));
71 el->el_outfile = fout;
72 el->el_errfile = ferr;
74 el->el_infd = fileno(fin);
75 el->el_outfd = fileno(fout);
76 el->el_errfd = fileno(ferr);
78 el->el_prog = Strdup(ct_decode_string(prog, &el->el_scratch));
79 if (el->el_prog == NULL) {
85 * Initialize all the modules. Order is important!!!
89 if (setlocale(LC_CTYPE, NULL) != NULL){
90 if (strcmp(nl_langinfo(CODESET), "UTF-8") == 0)
91 el->el_flags |= CHARSET_IS_UTF8;
95 if (terminal_init(el) == -1) {
100 (void) keymacro_init(el);
102 if (tty_init(el) == -1)
103 el->el_flags |= NO_TTY;
105 (void) search_init(el);
106 (void) hist_init(el);
107 (void) prompt_init(el);
109 (void) read_init(el);
137 el_free(el->el_prog);
139 el_free(el->el_scratch.cbuff);
140 el_free(el->el_scratch.wbuff);
141 el_free(el->el_lgcyconv.cbuff);
142 el_free(el->el_lgcyconv.wbuff);
149 * Reset the tty and the parser
152 el_reset(EditLine *el)
156 ch_reset(el, 0); /* XXX: Do we want that? */
161 * set the editline parameters
164 FUN(el,set)(EditLine *el, int op, ...)
176 el_pfunc_t p = va_arg(ap, el_pfunc_t);
178 rv = prompt_set(el, p, 0, op, 1);
183 el_zfunc_t p = va_arg(ap, el_zfunc_t);
184 void *arg = va_arg(ap, void *);
185 rv = ch_resizefun(el, p, arg);
190 case EL_RPROMPT_ESC: {
191 el_pfunc_t p = va_arg(ap, el_pfunc_t);
192 int c = va_arg(ap, int);
194 rv = prompt_set(el, p, c, op, 1);
199 rv = terminal_set(el, va_arg(ap, char *));
203 rv = map_set_editor(el, va_arg(ap, Char *));
208 el->el_flags |= HANDLE_SIGNALS;
210 el->el_flags &= ~HANDLE_SIGNALS;
219 const Char *argv[20];
222 for (i = 1; i < (int)__arraycount(argv); i++)
223 if ((argv[i] = va_arg(ap, Char *)) == NULL)
228 argv[0] = STR("bind");
229 rv = map_bind(el, i, argv);
233 argv[0] = STR("telltc");
234 rv = terminal_telltc(el, i, argv);
238 argv[0] = STR("settc");
239 rv = terminal_settc(el, i, argv);
243 argv[0] = STR("echotc");
244 rv = terminal_echotc(el, i, argv);
248 argv[0] = STR("setty");
249 rv = tty_stty(el, i, argv);
254 EL_ABORT((el->el_errfile, "Bad op %d\n", op));
262 Char *name = va_arg(ap, Char *);
263 Char *help = va_arg(ap, Char *);
264 el_func_t func = va_arg(ap, el_func_t);
266 rv = map_addfunc(el, name, help, func);
272 hist_fun_t func = va_arg(ap, hist_fun_t);
273 void *ptr = va_arg(ap, void *);
275 rv = hist_set(el, func, ptr);
276 if (!(el->el_flags & CHARSET_IS_UTF8))
277 el->el_flags &= ~NARROW_HISTORY;
283 el->el_flags &= ~EDIT_DISABLED;
285 el->el_flags |= EDIT_DISABLED;
291 el_rfunc_t rc = va_arg(ap, el_rfunc_t);
292 rv = el_read_setfn(el, rc);
293 el->el_flags &= ~NARROW_READ;
298 el->el_data = va_arg(ap, void *);
302 rv = va_arg(ap, int);
303 if (rv && !(el->el_flags & UNBUFFERED)) {
304 el->el_flags |= UNBUFFERED;
306 } else if (!rv && (el->el_flags & UNBUFFERED)) {
307 el->el_flags &= ~UNBUFFERED;
314 rv = va_arg(ap, int);
316 (void) tty_rawmode(el);
318 (void) tty_cookedmode(el);
327 what = va_arg(ap, int);
328 fp = va_arg(ap, FILE *);
334 el->el_infd = fileno(fp);
338 el->el_outfd = fileno(fp);
342 el->el_errfd = fileno(fp);
352 re_clear_display(el);
368 * retrieve the editline parameters
371 FUN(el,get)(EditLine *el, int op, ...)
384 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
385 rv = prompt_get(el, p, 0, op);
389 case EL_RPROMPT_ESC: {
390 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
391 Char *c = va_arg(ap, Char *);
393 rv = prompt_get(el, p, c, op);
398 rv = map_get_editor(el, va_arg(ap, const Char **));
402 *va_arg(ap, int *) = (el->el_flags & HANDLE_SIGNALS);
407 *va_arg(ap, int *) = !(el->el_flags & EDIT_DISABLED);
412 terminal_get(el, va_arg(ap, const char **));
418 static char name[] = "gettc";
422 for (i = 1; i < (int)__arraycount(argv); i++)
423 if ((argv[i] = va_arg(ap, char *)) == NULL)
427 rv = terminal_gettc(el, i, argv);
432 *va_arg(ap, el_rfunc_t *) = el_read_getfn(el);
437 *va_arg(ap, void **) = el->el_data;
442 *va_arg(ap, int *) = (!(el->el_flags & UNBUFFERED));
451 what = va_arg(ap, int);
452 fpp = va_arg(ap, FILE **);
456 *fpp = el->el_infile;
459 *fpp = el->el_outfile;
462 *fpp = el->el_errfile;
481 * Return editing info
483 public const TYPE(LineInfo) *
484 FUN(el,line)(EditLine *el)
487 return (const TYPE(LineInfo) *)(void *)&el->el_line;
495 el_source(EditLine *el, const char *fname)
506 static const char elpath[] = "/.editrc";
507 size_t plen = sizeof(elpath);
509 #ifdef HAVE_ISSETUGID
512 if ((ptr = getenv("HOME")) == NULL)
515 if ((path = el_malloc(plen * sizeof(*path))) == NULL)
517 (void)snprintf(path, plen, "%s%s", ptr, elpath);
521 * If issetugid() is missing, always return an error, in order
522 * to keep from inadvertently opening up the user to a security
529 fp = fopen(fname, "r");
535 while ((ptr = fgetln(fp, &len)) != NULL) {
537 continue; /* Empty line. */
538 dptr = ct_decode_string(ptr, &el->el_scratch);
541 if (len > 0 && dptr[len - 1] == '\n')
544 /* loop until first non-space char or EOL */
545 while (*dptr != '\0' && Isspace(*dptr))
548 continue; /* ignore, this is a comment line */
549 if ((error = parse_line(el, dptr)) == -1)
560 * Called from program when terminal is resized
563 el_resize(EditLine *el)
568 (void) sigemptyset(&nset);
569 (void) sigaddset(&nset, SIGWINCH);
570 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
572 /* get the correct window size */
573 if (terminal_get_size(el, &lins, &cols))
574 terminal_change_size(el, lins, cols);
576 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
581 * Called from the program to beep
584 el_beep(EditLine *el)
592 * Set the state of EDIT_DISABLED from the `edit' command.
596 el_editmode(EditLine *el, int argc, const Char **argv)
600 if (argv == NULL || argc != 2 || argv[1] == NULL)
604 if (Strcmp(how, STR("on")) == 0) {
605 el->el_flags &= ~EDIT_DISABLED;
607 } else if (Strcmp(how, STR("off")) == 0) {
609 el->el_flags |= EDIT_DISABLED;
612 (void) fprintf(el->el_errfile, "edit: Bad value `" FSTR "'.\n",