libedit: Add bapt patches to improve unicode
[dragonfly.git] / contrib / libedit / src / el.c
CommitLineData
84b940c1 1/* $NetBSD: el.c,v 1.73 2014/06/18 18:12:28 christos Exp $ */
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2
3/*-
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Christos Zoulas of Cornell University.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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.
21 *
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
32 * SUCH DAMAGE.
33 */
34
35#include "config.h"
36#if !defined(lint) && !defined(SCCSID)
37#if 0
38static char sccsid[] = "@(#)el.c 8.2 (Berkeley) 1/3/94";
39#else
84b940c1 40__RCSID("$NetBSD: el.c,v 1.73 2014/06/18 18:12:28 christos Exp $");
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41#endif
42#endif /* not lint && not SCCSID */
43
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44/*
45 * el.c: EditLine interface functions
46 */
47#include <sys/types.h>
48#include <sys/param.h>
49#include <string.h>
50#include <stdlib.h>
51#include <stdarg.h>
52#include <ctype.h>
53#include <locale.h>
54#include <langinfo.h>
55#include "el.h"
56
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57#ifndef HAVE_SECURE_GETENV
58# ifdef HAVE___SECURE_GETENV
59# define secure_getenv __secure_getenv
60# define HAVE_SECURE_GETENV 1
61# else
62# ifdef HAVE_ISSETUGID
63# include <unistd.h>
64# else
65# undef issetugid
66# define issetugid() 1
67# endif
68# endif
69#endif
70
71#ifndef HAVE_SECURE_GETENV
72char *secure_getenv(char const *name)
73{
74 if (issetugid())
75 return 0;
76 return getenv(name);
77}
78#endif
79
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80/* el_init():
81 * Initialize editline and set default parameters.
82 */
83public EditLine *
84el_init(const char *prog, FILE *fin, FILE *fout, FILE *ferr)
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85{
86 return el_init_fd(prog, fin, fout, ferr, fileno(fin), fileno(fout),
87 fileno(ferr));
88}
89
90public EditLine *
91el_init_fd(const char *prog, FILE *fin, FILE *fout, FILE *ferr,
92 int fdin, int fdout, int fderr)
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93{
94 EditLine *el = el_malloc(sizeof(*el));
95
96 if (el == NULL)
97 return NULL;
98
99 memset(el, 0, sizeof(EditLine));
100
101 el->el_infile = fin;
102 el->el_outfile = fout;
103 el->el_errfile = ferr;
104
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105 el->el_infd = fdin;
106 el->el_outfd = fdout;
107 el->el_errfd = fderr;
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108
109 el->el_prog = Strdup(ct_decode_string(prog, &el->el_scratch));
110 if (el->el_prog == NULL) {
111 el_free(el);
112 return NULL;
113 }
114
115 /*
116 * Initialize all the modules. Order is important!!!
117 */
118 el->el_flags = 0;
119#ifdef WIDECHAR
af5785e0 120 if (setlocale(LC_CTYPE, "") != NULL){
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121 if (strcmp(nl_langinfo(CODESET), "UTF-8") == 0)
122 el->el_flags |= CHARSET_IS_UTF8;
123 }
124#endif
125
126 if (terminal_init(el) == -1) {
127 el_free(el->el_prog);
128 el_free(el);
129 return NULL;
130 }
131 (void) keymacro_init(el);
132 (void) map_init(el);
133 if (tty_init(el) == -1)
134 el->el_flags |= NO_TTY;
135 (void) ch_init(el);
136 (void) search_init(el);
137 (void) hist_init(el);
138 (void) prompt_init(el);
139 (void) sig_init(el);
140 (void) read_init(el);
141
142 return el;
143}
144
145
146/* el_end():
147 * Clean up.
148 */
149public void
150el_end(EditLine *el)
151{
152
153 if (el == NULL)
154 return;
155
156 el_reset(el);
157
158 terminal_end(el);
159 keymacro_end(el);
160 map_end(el);
161 tty_end(el);
162 ch_end(el);
163 search_end(el);
164 hist_end(el);
165 prompt_end(el);
166 sig_end(el);
167
168 el_free(el->el_prog);
169#ifdef WIDECHAR
170 el_free(el->el_scratch.cbuff);
171 el_free(el->el_scratch.wbuff);
172 el_free(el->el_lgcyconv.cbuff);
173 el_free(el->el_lgcyconv.wbuff);
174#endif
175 el_free(el);
176}
177
178
179/* el_reset():
180 * Reset the tty and the parser
181 */
182public void
183el_reset(EditLine *el)
184{
185
186 tty_cookedmode(el);
187 ch_reset(el, 0); /* XXX: Do we want that? */
188}
189
190
191/* el_set():
192 * set the editline parameters
193 */
194public int
195FUN(el,set)(EditLine *el, int op, ...)
196{
197 va_list ap;
198 int rv = 0;
199
200 if (el == NULL)
201 return -1;
202 va_start(ap, op);
203
204 switch (op) {
205 case EL_PROMPT:
206 case EL_RPROMPT: {
207 el_pfunc_t p = va_arg(ap, el_pfunc_t);
208
209 rv = prompt_set(el, p, 0, op, 1);
210 break;
211 }
212
213 case EL_RESIZE: {
214 el_zfunc_t p = va_arg(ap, el_zfunc_t);
215 void *arg = va_arg(ap, void *);
216 rv = ch_resizefun(el, p, arg);
217 break;
218 }
219
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220 case EL_ALIAS_TEXT: {
221 el_afunc_t p = va_arg(ap, el_afunc_t);
222 void *arg = va_arg(ap, void *);
223 rv = ch_aliasfun(el, p, arg);
224 break;
225 }
226
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227 case EL_PROMPT_ESC:
228 case EL_RPROMPT_ESC: {
229 el_pfunc_t p = va_arg(ap, el_pfunc_t);
230 int c = va_arg(ap, int);
231
232 rv = prompt_set(el, p, c, op, 1);
233 break;
234 }
235
236 case EL_TERMINAL:
237 rv = terminal_set(el, va_arg(ap, char *));
238 break;
239
240 case EL_EDITOR:
241 rv = map_set_editor(el, va_arg(ap, Char *));
242 break;
243
244 case EL_SIGNAL:
245 if (va_arg(ap, int))
246 el->el_flags |= HANDLE_SIGNALS;
247 else
248 el->el_flags &= ~HANDLE_SIGNALS;
249 break;
250
251 case EL_BIND:
252 case EL_TELLTC:
253 case EL_SETTC:
254 case EL_ECHOTC:
255 case EL_SETTY:
256 {
257 const Char *argv[20];
258 int i;
259
260 for (i = 1; i < (int)__arraycount(argv); i++)
261 if ((argv[i] = va_arg(ap, Char *)) == NULL)
262 break;
263
264 switch (op) {
265 case EL_BIND:
266 argv[0] = STR("bind");
267 rv = map_bind(el, i, argv);
268 break;
269
270 case EL_TELLTC:
271 argv[0] = STR("telltc");
272 rv = terminal_telltc(el, i, argv);
273 break;
274
275 case EL_SETTC:
276 argv[0] = STR("settc");
277 rv = terminal_settc(el, i, argv);
278 break;
279
280 case EL_ECHOTC:
281 argv[0] = STR("echotc");
282 rv = terminal_echotc(el, i, argv);
283 break;
284
285 case EL_SETTY:
286 argv[0] = STR("setty");
287 rv = tty_stty(el, i, argv);
288 break;
289
290 default:
291 rv = -1;
292 EL_ABORT((el->el_errfile, "Bad op %d\n", op));
293 break;
294 }
295 break;
296 }
297
298 case EL_ADDFN:
299 {
300 Char *name = va_arg(ap, Char *);
301 Char *help = va_arg(ap, Char *);
302 el_func_t func = va_arg(ap, el_func_t);
303
304 rv = map_addfunc(el, name, help, func);
305 break;
306 }
307
308 case EL_HIST:
309 {
310 hist_fun_t func = va_arg(ap, hist_fun_t);
311 void *ptr = va_arg(ap, void *);
312
313 rv = hist_set(el, func, ptr);
314 if (!(el->el_flags & CHARSET_IS_UTF8))
315 el->el_flags &= ~NARROW_HISTORY;
316 break;
317 }
318
319 case EL_EDITMODE:
320 if (va_arg(ap, int))
321 el->el_flags &= ~EDIT_DISABLED;
322 else
323 el->el_flags |= EDIT_DISABLED;
324 rv = 0;
325 break;
326
327 case EL_GETCFN:
328 {
329 el_rfunc_t rc = va_arg(ap, el_rfunc_t);
330 rv = el_read_setfn(el, rc);
331 el->el_flags &= ~NARROW_READ;
332 break;
333 }
334
335 case EL_CLIENTDATA:
336 el->el_data = va_arg(ap, void *);
337 break;
338
339 case EL_UNBUFFERED:
340 rv = va_arg(ap, int);
341 if (rv && !(el->el_flags & UNBUFFERED)) {
342 el->el_flags |= UNBUFFERED;
343 read_prepare(el);
344 } else if (!rv && (el->el_flags & UNBUFFERED)) {
345 el->el_flags &= ~UNBUFFERED;
346 read_finish(el);
347 }
348 rv = 0;
349 break;
350
351 case EL_PREP_TERM:
352 rv = va_arg(ap, int);
353 if (rv)
354 (void) tty_rawmode(el);
355 else
356 (void) tty_cookedmode(el);
357 rv = 0;
358 break;
359
360 case EL_SETFP:
361 {
362 FILE *fp;
363 int what;
364
365 what = va_arg(ap, int);
366 fp = va_arg(ap, FILE *);
367
368 rv = 0;
369 switch (what) {
370 case 0:
371 el->el_infile = fp;
372 el->el_infd = fileno(fp);
373 break;
374 case 1:
375 el->el_outfile = fp;
376 el->el_outfd = fileno(fp);
377 break;
378 case 2:
379 el->el_errfile = fp;
380 el->el_errfd = fileno(fp);
381 break;
382 default:
383 rv = -1;
384 break;
385 }
386 break;
387 }
388
389 case EL_REFRESH:
390 re_clear_display(el);
391 re_refresh(el);
392 terminal__flush(el);
393 break;
394
395 default:
396 rv = -1;
397 break;
398 }
399
400 va_end(ap);
401 return rv;
402}
403
404
405/* el_get():
406 * retrieve the editline parameters
407 */
408public int
409FUN(el,get)(EditLine *el, int op, ...)
410{
411 va_list ap;
412 int rv;
413
414 if (el == NULL)
415 return -1;
416
417 va_start(ap, op);
418
419 switch (op) {
420 case EL_PROMPT:
421 case EL_RPROMPT: {
422 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
423 rv = prompt_get(el, p, 0, op);
424 break;
425 }
426 case EL_PROMPT_ESC:
427 case EL_RPROMPT_ESC: {
428 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
429 Char *c = va_arg(ap, Char *);
430
431 rv = prompt_get(el, p, c, op);
432 break;
433 }
434
435 case EL_EDITOR:
436 rv = map_get_editor(el, va_arg(ap, const Char **));
437 break;
438
439 case EL_SIGNAL:
440 *va_arg(ap, int *) = (el->el_flags & HANDLE_SIGNALS);
441 rv = 0;
442 break;
443
444 case EL_EDITMODE:
445 *va_arg(ap, int *) = !(el->el_flags & EDIT_DISABLED);
446 rv = 0;
447 break;
448
449 case EL_TERMINAL:
450 terminal_get(el, va_arg(ap, const char **));
451 rv = 0;
452 break;
453
454 case EL_GETTC:
455 {
456 static char name[] = "gettc";
457 char *argv[20];
458 int i;
459
460 for (i = 1; i < (int)__arraycount(argv); i++)
461 if ((argv[i] = va_arg(ap, char *)) == NULL)
462 break;
463
464 argv[0] = name;
465 rv = terminal_gettc(el, i, argv);
466 break;
467 }
468
469 case EL_GETCFN:
470 *va_arg(ap, el_rfunc_t *) = el_read_getfn(el);
471 rv = 0;
472 break;
473
474 case EL_CLIENTDATA:
475 *va_arg(ap, void **) = el->el_data;
476 rv = 0;
477 break;
478
479 case EL_UNBUFFERED:
c8e4d2bf 480 *va_arg(ap, int *) = (el->el_flags & UNBUFFERED) != 0;
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481 rv = 0;
482 break;
483
484 case EL_GETFP:
485 {
486 int what;
487 FILE **fpp;
488
489 what = va_arg(ap, int);
490 fpp = va_arg(ap, FILE **);
491 rv = 0;
492 switch (what) {
493 case 0:
494 *fpp = el->el_infile;
495 break;
496 case 1:
497 *fpp = el->el_outfile;
498 break;
499 case 2:
500 *fpp = el->el_errfile;
501 break;
502 default:
503 rv = -1;
504 break;
505 }
506 break;
507 }
508 default:
509 rv = -1;
510 break;
511 }
512 va_end(ap);
513
514 return rv;
515}
516
517
518/* el_line():
519 * Return editing info
520 */
521public const TYPE(LineInfo) *
522FUN(el,line)(EditLine *el)
523{
524
525 return (const TYPE(LineInfo) *)(void *)&el->el_line;
526}
527
528
529/* el_source():
530 * Source a file
531 */
532public int
533el_source(EditLine *el, const char *fname)
534{
535 FILE *fp;
536 size_t len;
537 char *ptr;
538 char *path = NULL;
539 const Char *dptr;
540 int error = 0;
541
542 fp = NULL;
543 if (fname == NULL) {
544 static const char elpath[] = "/.editrc";
545 size_t plen = sizeof(elpath);
546
84b940c1 547 if ((ptr = secure_getenv("HOME")) == NULL)
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548 return -1;
549 plen += strlen(ptr);
550 if ((path = el_malloc(plen * sizeof(*path))) == NULL)
551 return -1;
552 (void)snprintf(path, plen, "%s%s", ptr, elpath);
553 fname = path;
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554 }
555 if (fp == NULL)
556 fp = fopen(fname, "r");
557 if (fp == NULL) {
558 el_free(path);
559 return -1;
560 }
561
562 while ((ptr = fgetln(fp, &len)) != NULL) {
563 if (*ptr == '\n')
564 continue; /* Empty line. */
565 dptr = ct_decode_string(ptr, &el->el_scratch);
566 if (!dptr)
567 continue;
568 if (len > 0 && dptr[len - 1] == '\n')
569 --len;
570
571 /* loop until first non-space char or EOL */
572 while (*dptr != '\0' && Isspace(*dptr))
573 dptr++;
574 if (*dptr == '#')
575 continue; /* ignore, this is a comment line */
576 if ((error = parse_line(el, dptr)) == -1)
577 break;
578 }
579
580 el_free(path);
581 (void) fclose(fp);
582 return error;
583}
584
585
586/* el_resize():
587 * Called from program when terminal is resized
588 */
589public void
590el_resize(EditLine *el)
591{
592 int lins, cols;
593 sigset_t oset, nset;
594
595 (void) sigemptyset(&nset);
596 (void) sigaddset(&nset, SIGWINCH);
597 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
598
599 /* get the correct window size */
600 if (terminal_get_size(el, &lins, &cols))
601 terminal_change_size(el, lins, cols);
602
603 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
604}
605
606
607/* el_beep():
608 * Called from the program to beep
609 */
610public void
611el_beep(EditLine *el)
612{
613
614 terminal_beep(el);
615}
616
617
618/* el_editmode()
619 * Set the state of EDIT_DISABLED from the `edit' command.
620 */
621protected int
622/*ARGSUSED*/
623el_editmode(EditLine *el, int argc, const Char **argv)
624{
625 const Char *how;
626
627 if (argv == NULL || argc != 2 || argv[1] == NULL)
628 return -1;
629
630 how = argv[1];
631 if (Strcmp(how, STR("on")) == 0) {
632 el->el_flags &= ~EDIT_DISABLED;
633 tty_rawmode(el);
634 } else if (Strcmp(how, STR("off")) == 0) {
635 tty_cookedmode(el);
636 el->el_flags |= EDIT_DISABLED;
637 }
638 else {
639 (void) fprintf(el->el_errfile, "edit: Bad value `" FSTR "'.\n",
640 how);
641 return -1;
642 }
643 return 0;
644}