1 /* $NetBSD: terminal.c,v 1.35 2019/02/15 23:20:35 christos Exp $ */
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
38 static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95";
39 #else
40 __RCSID("$NetBSD: terminal.c,v 1.35 2019/02/15 23:20:35 christos Exp $");
41 #endif
42 #endif /* not lint && not SCCSID */
43
44 /*
45 * terminal.c: Editor/termcap-curses interface
46 * We have to declare a static variable here, since the
47 * termcap putchar routine does not take an argument!
48 */
49 #include <sys/types.h>
50 #include <sys/ioctl.h>
51 #include <limits.h>
52 #include <signal.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <unistd.h>
57 #ifdef HAVE_TERMCAP_H
58 #include <termcap.h>
59 #endif
60 #ifdef HAVE_CURSES_H
61 #include <curses.h>
62 #elif HAVE_NCURSES_H
63 #include <ncurses.h>
64 #endif
65
66 /* Solaris's term.h does horrid things. */
67 #if defined(HAVE_TERM_H) && !defined(__sun) && !defined(HAVE_TERMCAP_H)
68 #include <term.h>
69 #endif
70
71 #ifdef _REENTRANT
72 #include <pthread.h>
73 #endif
74
75 #include "el.h"
76 #include "fcns.h"
77
78 /*
79 * IMPORTANT NOTE: these routines are allowed to look at the current screen
80 * and the current position assuming that it is correct. If this is not
81 * true, then the update will be WRONG! This is (should be) a valid
82 * assumption...
83 */
84
85 #define TC_BUFSIZE ((size_t)2048)
86
87 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \
88 el->el_terminal.t_str[a][0] != '\0')
89 #define Str(a) el->el_terminal.t_str[a]
90 #define Val(a) el->el_terminal.t_val[a]
91
92 static const struct termcapstr {
93 const char *name;
94 const char *long_name;
95 } tstr[] = {
96 #define T_al 0
97 { "al", "add new blank line" },
98 #define T_bl 1
99 { "bl", "audible bell" },
100 #define T_cd 2
101 { "cd", "clear to bottom" },
102 #define T_ce 3
103 { "ce", "clear to end of line" },
104 #define T_ch 4
105 { "ch", "cursor to horiz pos" },
106 #define T_cl 5
107 { "cl", "clear screen" },
108 #define T_dc 6
109 { "dc", "delete a character" },
110 #define T_dl 7
111 { "dl", "delete a line" },
112 #define T_dm 8
113 { "dm", "start delete mode" },
114 #define T_ed 9
115 { "ed", "end delete mode" },
116 #define T_ei 10
117 { "ei", "end insert mode" },
118 #define T_fs 11
119 { "fs", "cursor from status line" },
120 #define T_ho 12
121 { "ho", "home cursor" },
122 #define T_ic 13
123 { "ic", "insert character" },
124 #define T_im 14
125 { "im", "start insert mode" },
126 #define T_ip 15
127 { "ip", "insert padding" },
128 #define T_kd 16
129 { "kd", "sends cursor down" },
130 #define T_kl 17
131 { "kl", "sends cursor left" },
132 #define T_kr 18
133 { "kr", "sends cursor right" },
134 #define T_ku 19
135 { "ku", "sends cursor up" },
136 #define T_md 20
137 { "md", "begin bold" },
138 #define T_me 21
139 { "me", "end attributes" },
140 #define T_nd 22
141 { "nd", "non destructive space" },
142 #define T_se 23
143 { "se", "end standout" },
144 #define T_so 24
145 { "so", "begin standout" },
146 #define T_ts 25
147 { "ts", "cursor to status line" },
148 #define T_up 26
149 { "up", "cursor up one" },
150 #define T_us 27
151 { "us", "begin underline" },
152 #define T_ue 28
153 { "ue", "end underline" },
154 #define T_vb 29
155 { "vb", "visible bell" },
156 #define T_DC 30
157 { "DC", "delete multiple chars" },
158 #define T_DO 31
159 { "DO", "cursor down multiple" },
160 #define T_IC 32
161 { "IC", "insert multiple chars" },
162 #define T_LE 33
163 { "LE", "cursor left multiple" },
164 #define T_RI 34
165 { "RI", "cursor right multiple" },
166 #define T_UP 35
167 { "UP", "cursor up multiple" },
168 #define T_kh 36
169 { "kh", "send cursor home" },
170 #define T_at7 37
171 { "@7", "send cursor end" },
172 #define T_kD 38
173 { "kD", "send cursor delete" },
174 #define T_str 39
175 { NULL, NULL }
176 };
177
178 static const struct termcapval {
179 const char *name;
180 const char *long_name;
181 } tval[] = {
182 #define T_am 0
183 { "am", "has automatic margins" },
184 #define T_pt 1
185 { "pt", "has physical tabs" },
186 #define T_li 2
187 { "li", "Number of lines" },
188 #define T_co 3
189 { "co", "Number of columns" },
190 #define T_km 4
191 { "km", "Has meta key" },
192 #define T_xt 5
193 { "xt", "Tab chars destructive" },
194 #define T_xn 6
195 { "xn", "newline ignored at right margin" },
196 #define T_MT 7
197 { "MT", "Has meta key" }, /* XXX? */
198 #define T_val 8
199 { NULL, NULL, }
200 };
201 /* do two or more of the attributes use me */
202
203 static void terminal_setflags(EditLine *);
204 static int terminal_rebuffer_display(EditLine *);
205 static void terminal_free_display(EditLine *);
206 static int terminal_alloc_display(EditLine *);
207 static void terminal_alloc(EditLine *, const struct termcapstr *,
208 const char *);
209 static void terminal_init_arrow(EditLine *);
210 static void terminal_reset_arrow(EditLine *);
211 static int terminal_putc(int);
212 static void terminal_tputs(EditLine *, const char *, int);
213
214 #ifdef _REENTRANT
215 static pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER;
216 #endif
217 static FILE *terminal_outfile = NULL;
218
219
220 /* terminal_setflags():
221 * Set the terminal capability flags
222 */
223 static void
terminal_setflags(EditLine * el)224 terminal_setflags(EditLine *el)
225 {
226 EL_FLAGS = 0;
227 if (el->el_tty.t_tabs)
228 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
229
230 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
231 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
232 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
233 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
234 TERM_CAN_INSERT : 0;
235 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
236 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
237 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
238
239 if (GoodStr(T_me) && GoodStr(T_ue))
240 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
241 TERM_CAN_ME : 0;
242 else
243 EL_FLAGS &= ~TERM_CAN_ME;
244 if (GoodStr(T_me) && GoodStr(T_se))
245 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
246 TERM_CAN_ME : 0;
247
248
249 #ifdef DEBUG_SCREEN
250 if (!EL_CAN_UP) {
251 (void) fprintf(el->el_errfile,
252 "WARNING: Your terminal cannot move up.\n");
253 (void) fprintf(el->el_errfile,
254 "Editing may be odd for long lines.\n");
255 }
256 if (!EL_CAN_CEOL)
257 (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
258 if (!EL_CAN_DELETE)
259 (void) fprintf(el->el_errfile, "no delete char capability.\n");
260 if (!EL_CAN_INSERT)
261 (void) fprintf(el->el_errfile, "no insert char capability.\n");
262 #endif /* DEBUG_SCREEN */
263 }
264
265 /* terminal_init():
266 * Initialize the terminal stuff
267 */
268 libedit_private int
terminal_init(EditLine * el)269 terminal_init(EditLine *el)
270 {
271
272 el->el_terminal.t_buf = el_malloc(TC_BUFSIZE *
273 sizeof(*el->el_terminal.t_buf));
274 if (el->el_terminal.t_buf == NULL)
275 goto fail1;
276 el->el_terminal.t_cap = el_malloc(TC_BUFSIZE *
277 sizeof(*el->el_terminal.t_cap));
278 if (el->el_terminal.t_cap == NULL)
279 goto fail2;
280 el->el_terminal.t_fkey = el_malloc(A_K_NKEYS *
281 sizeof(*el->el_terminal.t_fkey));
282 if (el->el_terminal.t_fkey == NULL)
283 goto fail3;
284 el->el_terminal.t_loc = 0;
285 el->el_terminal.t_str = el_malloc(T_str *
286 sizeof(*el->el_terminal.t_str));
287 if (el->el_terminal.t_str == NULL)
288 goto fail4;
289 (void) memset(el->el_terminal.t_str, 0, T_str *
290 sizeof(*el->el_terminal.t_str));
291 el->el_terminal.t_val = el_malloc(T_val *
292 sizeof(*el->el_terminal.t_val));
293 if (el->el_terminal.t_val == NULL)
294 goto fail5;
295 (void) memset(el->el_terminal.t_val, 0, T_val *
296 sizeof(*el->el_terminal.t_val));
297 (void) terminal_set(el, NULL);
298 terminal_init_arrow(el);
299 return 0;
300 fail5:
301 free(el->el_terminal.t_str);
302 el->el_terminal.t_str = NULL;
303 fail4:
304 free(el->el_terminal.t_fkey);
305 el->el_terminal.t_fkey = NULL;
306 fail3:
307 free(el->el_terminal.t_cap);
308 el->el_terminal.t_cap = NULL;
309 fail2:
310 free(el->el_terminal.t_buf);
311 el->el_terminal.t_buf = NULL;
312 fail1:
313 return -1;
314 }
315
316 /* terminal_end():
317 * Clean up the terminal stuff
318 */
319 libedit_private void
terminal_end(EditLine * el)320 terminal_end(EditLine *el)
321 {
322
323 el_free(el->el_terminal.t_buf);
324 el->el_terminal.t_buf = NULL;
325 el_free(el->el_terminal.t_cap);
326 el->el_terminal.t_cap = NULL;
327 el->el_terminal.t_loc = 0;
328 el_free(el->el_terminal.t_str);
329 el->el_terminal.t_str = NULL;
330 el_free(el->el_terminal.t_val);
331 el->el_terminal.t_val = NULL;
332 el_free(el->el_terminal.t_fkey);
333 el->el_terminal.t_fkey = NULL;
334 terminal_free_display(el);
335 }
336
337
338 /* terminal_alloc():
339 * Maintain a string pool for termcap strings
340 */
341 static void
terminal_alloc(EditLine * el,const struct termcapstr * t,const char * cap)342 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
343 {
344 char termbuf[TC_BUFSIZE];
345 size_t tlen, clen;
346 char **tlist = el->el_terminal.t_str;
347 char **tmp, **str = &tlist[t - tstr];
348
349 (void) memset(termbuf, 0, sizeof(termbuf));
350 if (cap == NULL || *cap == '\0') {
351 *str = NULL;
352 return;
353 } else
354 clen = strlen(cap);
355
356 tlen = *str == NULL ? 0 : strlen(*str);
357
358 /*
359 * New string is shorter; no need to allocate space
360 */
361 if (clen <= tlen) {
362 if (*str)
363 (void) strcpy(*str, cap); /* XXX strcpy is safe */
364 return;
365 }
366 /*
367 * New string is longer; see if we have enough space to append
368 */
369 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) {
370 /* XXX strcpy is safe */
371 (void) strcpy(*str = &el->el_terminal.t_buf[
372 el->el_terminal.t_loc], cap);
373 el->el_terminal.t_loc += clen + 1; /* one for \0 */
374 return;
375 }
376 /*
377 * Compact our buffer; no need to check compaction, cause we know it
378 * fits...
379 */
380 tlen = 0;
381 for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
382 if (*tmp != NULL && **tmp != '\0' && *tmp != *str) {
383 char *ptr;
384
385 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
386 continue;
387 termbuf[tlen++] = '\0';
388 }
389 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE);
390 el->el_terminal.t_loc = tlen;
391 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) {
392 (void) fprintf(el->el_errfile,
393 "Out of termcap string space.\n");
394 return;
395 }
396 /* XXX strcpy is safe */
397 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc],
398 cap);
399 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */
400 return;
401 }
402
403
404 /* terminal_rebuffer_display():
405 * Rebuffer the display after the screen changed size
406 */
407 static int
terminal_rebuffer_display(EditLine * el)408 terminal_rebuffer_display(EditLine *el)
409 {
410 coord_t *c = &el->el_terminal.t_size;
411
412 terminal_free_display(el);
413
414 c->h = Val(T_co);
415 c->v = Val(T_li);
416
417 if (terminal_alloc_display(el) == -1)
418 return -1;
419 return 0;
420 }
421
422 static wint_t **
terminal_alloc_buffer(EditLine * el)423 terminal_alloc_buffer(EditLine *el)
424 {
425 wint_t **b;
426 coord_t *c = &el->el_terminal.t_size;
427 int i;
428
429 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
430 if (b == NULL)
431 return NULL;
432 for (i = 0; i < c->v; i++) {
433 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
434 if (b[i] == NULL) {
435 while (--i >= 0)
436 el_free(b[i]);
437 el_free(b);
438 return NULL;
439 }
440 }
441 b[c->v] = NULL;
442 return b;
443 }
444
445 static void
terminal_free_buffer(wint_t *** bp)446 terminal_free_buffer(wint_t ***bp)
447 {
448 wint_t **b;
449 wint_t **bufp;
450
451 if (*bp == NULL)
452 return;
453
454 b = *bp;
455 *bp = NULL;
456
457 for (bufp = b; *bufp != NULL; bufp++)
458 el_free(*bufp);
459 el_free(b);
460 }
461
462 /* terminal_alloc_display():
463 * Allocate a new display.
464 */
465 static int
terminal_alloc_display(EditLine * el)466 terminal_alloc_display(EditLine *el)
467 {
468 el->el_display = terminal_alloc_buffer(el);
469 if (el->el_display == NULL)
470 goto done;
471 el->el_vdisplay = terminal_alloc_buffer(el);
472 if (el->el_vdisplay == NULL)
473 goto done;
474 return 0;
475 done:
476 terminal_free_display(el);
477 return -1;
478 }
479
480
481 /* terminal_free_display():
482 * Free the display buffers
483 */
484 static void
terminal_free_display(EditLine * el)485 terminal_free_display(EditLine *el)
486 {
487 terminal_free_buffer(&el->el_display);
488 terminal_free_buffer(&el->el_vdisplay);
489 }
490
491
492 /* terminal_move_to_line():
493 * move to line <where> (first line == 0)
494 * as efficiently as possible
495 */
496 libedit_private void
terminal_move_to_line(EditLine * el,int where)497 terminal_move_to_line(EditLine *el, int where)
498 {
499 int del;
500
501 if (where == el->el_cursor.v)
502 return;
503
504 if (where > el->el_terminal.t_size.v) {
505 #ifdef DEBUG_SCREEN
506 (void) fprintf(el->el_errfile,
507 "%s: where is ridiculous: %d\r\n", __func__, where);
508 #endif /* DEBUG_SCREEN */
509 return;
510 }
511 if ((del = where - el->el_cursor.v) > 0) {
512 if ((del > 1) && GoodStr(T_DO)) {
513 terminal_tputs(el, tgoto(Str(T_DO), del, del), del);
514 del = 0;
515 } else {
516 for (; del > 0; del--)
517 terminal__putc(el, '\n');
518 /* because the \n will become \r\n */
519 el->el_cursor.h = 0;
520 }
521 } else { /* del < 0 */
522 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
523 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del);
524 else {
525 if (GoodStr(T_up))
526 for (; del < 0; del++)
527 terminal_tputs(el, Str(T_up), 1);
528 }
529 }
530 el->el_cursor.v = where;/* now where is here */
531 }
532
533
534 /* terminal_move_to_char():
535 * Move to the character position specified
536 */
537 libedit_private void
terminal_move_to_char(EditLine * el,int where)538 terminal_move_to_char(EditLine *el, int where)
539 {
540 int del, i;
541
542 mc_again:
543 if (where == el->el_cursor.h)
544 return;
545
546 if (where > el->el_terminal.t_size.h) {
547 #ifdef DEBUG_SCREEN
548 (void) fprintf(el->el_errfile,
549 "%s: where is ridiculous: %d\r\n", __func__, where);
550 #endif /* DEBUG_SCREEN */
551 return;
552 }
553 if (!where) { /* if where is first column */
554 terminal__putc(el, '\r'); /* do a CR */
555 el->el_cursor.h = 0;
556 return;
557 }
558 del = where - el->el_cursor.h;
559
560 if ((del < -4 || del > 4) && GoodStr(T_ch))
561 /* go there directly */
562 terminal_tputs(el, tgoto(Str(T_ch), where, where), where);
563 else {
564 if (del > 0) { /* moving forward */
565 if ((del > 4) && GoodStr(T_RI))
566 terminal_tputs(el, tgoto(Str(T_RI), del, del),
567 del);
568 else {
569 /* if I can do tabs, use them */
570 if (EL_CAN_TAB) {
571 if ((el->el_cursor.h & 0370) !=
572 (where & ~0x7)
573 && (el->el_display[
574 el->el_cursor.v][where & 0370] !=
575 MB_FILL_CHAR)
576 ) {
577 /* if not within tab stop */
578 for (i =
579 (el->el_cursor.h & 0370);
580 i < (where & ~0x7);
581 i += 8)
582 terminal__putc(el,
583 '\t');
584 /* then tab over */
585 el->el_cursor.h = where & ~0x7;
586 }
587 }
588 /*
589 * it's usually cheaper to just write the
590 * chars, so we do.
591 */
592 /*
593 * NOTE THAT terminal_overwrite() WILL CHANGE
594 * el->el_cursor.h!!!
595 */
596 terminal_overwrite(el, &el->el_display[
597 el->el_cursor.v][el->el_cursor.h],
598 (size_t)(where - el->el_cursor.h));
599
600 }
601 } else { /* del < 0 := moving backward */
602 if ((-del > 4) && GoodStr(T_LE))
603 terminal_tputs(el, tgoto(Str(T_LE), -del, -del),
604 -del);
605 else { /* can't go directly there */
606 /*
607 * if the "cost" is greater than the "cost"
608 * from col 0
609 */
610 if (EL_CAN_TAB ?
611 ((unsigned int)-del >
612 (((unsigned int) where >> 3) +
613 (where & 07)))
614 : (-del > where)) {
615 terminal__putc(el, '\r');/* do a CR */
616 el->el_cursor.h = 0;
617 goto mc_again; /* and try again */
618 }
619 for (i = 0; i < -del; i++)
620 terminal__putc(el, '\b');
621 }
622 }
623 }
624 el->el_cursor.h = where; /* now where is here */
625 }
626
627
628 /* terminal_overwrite():
629 * Overstrike num characters
630 * Assumes MB_FILL_CHARs are present to keep the column count correct
631 */
632 libedit_private void
terminal_overwrite(EditLine * el,const wchar_t * cp,size_t n)633 terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n)
634 {
635 if (n == 0)
636 return;
637
638 if (n > (size_t)el->el_terminal.t_size.h) {
639 #ifdef DEBUG_SCREEN
640 (void) fprintf(el->el_errfile,
641 "%s: n is ridiculous: %zu\r\n", __func__, n);
642 #endif /* DEBUG_SCREEN */
643 return;
644 }
645
646 do {
647 /* terminal__putc() ignores any MB_FILL_CHARs */
648 terminal__putc(el, *cp++);
649 el->el_cursor.h++;
650 } while (--n);
651
652 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */
653 if (EL_HAS_AUTO_MARGINS) { /* yes */
654 el->el_cursor.h = 0;
655 el->el_cursor.v++;
656 if (EL_HAS_MAGIC_MARGINS) {
657 /* force the wrap to avoid the "magic"
658 * situation */
659 wchar_t c;
660 if ((c = el->el_display[el->el_cursor.v]
661 [el->el_cursor.h]) != '\0') {
662 terminal_overwrite(el, &c, (size_t)1);
663 while (el->el_display[el->el_cursor.v]
664 [el->el_cursor.h] == MB_FILL_CHAR)
665 el->el_cursor.h++;
666 } else {
667 terminal__putc(el, ' ');
668 el->el_cursor.h = 1;
669 }
670 }
671 } else /* no wrap, but cursor stays on screen */
672 el->el_cursor.h = el->el_terminal.t_size.h - 1;
673 }
674 }
675
676
677 /* terminal_deletechars():
678 * Delete num characters
679 */
680 libedit_private void
terminal_deletechars(EditLine * el,int num)681 terminal_deletechars(EditLine *el, int num)
682 {
683 if (num <= 0)
684 return;
685
686 if (!EL_CAN_DELETE) {
687 #ifdef DEBUG_EDIT
688 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
689 #endif /* DEBUG_EDIT */
690 return;
691 }
692 if (num > el->el_terminal.t_size.h) {
693 #ifdef DEBUG_SCREEN
694 (void) fprintf(el->el_errfile,
695 "%s: num is ridiculous: %d\r\n", __func__, num);
696 #endif /* DEBUG_SCREEN */
697 return;
698 }
699 if (GoodStr(T_DC)) /* if I have multiple delete */
700 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
701 * expen. */
702 terminal_tputs(el, tgoto(Str(T_DC), num, num), num);
703 return;
704 }
705 if (GoodStr(T_dm)) /* if I have delete mode */
706 terminal_tputs(el, Str(T_dm), 1);
707
708 if (GoodStr(T_dc)) /* else do one at a time */
709 while (num--)
710 terminal_tputs(el, Str(T_dc), 1);
711
712 if (GoodStr(T_ed)) /* if I have delete mode */
713 terminal_tputs(el, Str(T_ed), 1);
714 }
715
716
717 /* terminal_insertwrite():
718 * Puts terminal in insert character mode or inserts num
719 * characters in the line
720 * Assumes MB_FILL_CHARs are present to keep column count correct
721 */
722 libedit_private void
terminal_insertwrite(EditLine * el,wchar_t * cp,int num)723 terminal_insertwrite(EditLine *el, wchar_t *cp, int num)
724 {
725 if (num <= 0)
726 return;
727 if (!EL_CAN_INSERT) {
728 #ifdef DEBUG_EDIT
729 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
730 #endif /* DEBUG_EDIT */
731 return;
732 }
733 if (num > el->el_terminal.t_size.h) {
734 #ifdef DEBUG_SCREEN
735 (void) fprintf(el->el_errfile,
736 "%s: num is ridiculous: %d\r\n", __func__, num);
737 #endif /* DEBUG_SCREEN */
738 return;
739 }
740 if (GoodStr(T_IC)) /* if I have multiple insert */
741 if ((num > 1) || !GoodStr(T_ic)) {
742 /* if ic would be more expensive */
743 terminal_tputs(el, tgoto(Str(T_IC), num, num), num);
744 terminal_overwrite(el, cp, (size_t)num);
745 /* this updates el_cursor.h */
746 return;
747 }
748 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
749 terminal_tputs(el, Str(T_im), 1);
750
751 el->el_cursor.h += num;
752 do
753 terminal__putc(el, *cp++);
754 while (--num);
755
756 if (GoodStr(T_ip)) /* have to make num chars insert */
757 terminal_tputs(el, Str(T_ip), 1);
758
759 terminal_tputs(el, Str(T_ei), 1);
760 return;
761 }
762 do {
763 if (GoodStr(T_ic)) /* have to make num chars insert */
764 terminal_tputs(el, Str(T_ic), 1);
765
766 terminal__putc(el, *cp++);
767
768 el->el_cursor.h++;
769
770 if (GoodStr(T_ip)) /* have to make num chars insert */
771 terminal_tputs(el, Str(T_ip), 1);
772 /* pad the inserted char */
773
774 } while (--num);
775 }
776
777
778 /* terminal_clear_EOL():
779 * clear to end of line. There are num characters to clear
780 */
781 libedit_private void
terminal_clear_EOL(EditLine * el,int num)782 terminal_clear_EOL(EditLine *el, int num)
783 {
784 int i;
785
786 if (EL_CAN_CEOL && GoodStr(T_ce))
787 terminal_tputs(el, Str(T_ce), 1);
788 else {
789 for (i = 0; i < num; i++)
790 terminal__putc(el, ' ');
791 el->el_cursor.h += num; /* have written num spaces */
792 }
793 }
794
795
796 /* terminal_clear_screen():
797 * Clear the screen
798 */
799 libedit_private void
terminal_clear_screen(EditLine * el)800 terminal_clear_screen(EditLine *el)
801 { /* clear the whole screen and home */
802
803 if (GoodStr(T_cl))
804 /* send the clear screen code */
805 terminal_tputs(el, Str(T_cl), Val(T_li));
806 else if (GoodStr(T_ho) && GoodStr(T_cd)) {
807 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */
808 /* clear to bottom of screen */
809 terminal_tputs(el, Str(T_cd), Val(T_li));
810 } else {
811 terminal__putc(el, '\r');
812 terminal__putc(el, '\n');
813 }
814 }
815
816
817 /* terminal_beep():
818 * Beep the way the terminal wants us
819 */
820 libedit_private void
terminal_beep(EditLine * el)821 terminal_beep(EditLine *el)
822 {
823 if (GoodStr(T_bl))
824 /* what termcap says we should use */
825 terminal_tputs(el, Str(T_bl), 1);
826 else
827 terminal__putc(el, '\007'); /* an ASCII bell; ^G */
828 }
829
830
831 libedit_private void
terminal_get(EditLine * el,const char ** term)832 terminal_get(EditLine *el, const char **term)
833 {
834 *term = el->el_terminal.t_name;
835 }
836
837
838 /* terminal_set():
839 * Read in the terminal capabilities from the requested terminal
840 */
841 libedit_private int
terminal_set(EditLine * el,const char * term)842 terminal_set(EditLine *el, const char *term)
843 {
844 int i;
845 char buf[TC_BUFSIZE];
846 char *area;
847 const struct termcapstr *t;
848 sigset_t oset, nset;
849 int lins, cols;
850
851 (void) sigemptyset(&nset);
852 (void) sigaddset(&nset, SIGWINCH);
853 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
854
855 area = buf;
856
857
858 if (term == NULL)
859 term = getenv("TERM");
860
861 if (!term || !term[0])
862 term = "dumb";
863
864 if (strcmp(term, "emacs") == 0)
865 el->el_flags |= EDIT_DISABLED;
866
867 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE);
868
869 i = tgetent(el->el_terminal.t_cap, term);
870
871 if (i <= 0) {
872 if (i == -1)
873 (void) fprintf(el->el_errfile,
874 "Cannot read termcap database;\n");
875 else if (i == 0)
876 (void) fprintf(el->el_errfile,
877 "No entry for terminal type \"%s\";\n", term);
878 (void) fprintf(el->el_errfile,
879 "using dumb terminal settings.\n");
880 Val(T_co) = 80; /* do a dumb terminal */
881 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
882 Val(T_xt) = Val(T_MT);
883 for (t = tstr; t->name != NULL; t++)
884 terminal_alloc(el, t, NULL);
885 } else {
886 /* auto/magic margins */
887 Val(T_am) = tgetflag("am");
888 Val(T_xn) = tgetflag("xn");
889 /* Can we tab */
890 Val(T_pt) = tgetflag("pt");
891 Val(T_xt) = tgetflag("xt");
892 /* do we have a meta? */
893 Val(T_km) = tgetflag("km");
894 Val(T_MT) = tgetflag("MT");
895 /* Get the size */
896 Val(T_co) = tgetnum("co");
897 Val(T_li) = tgetnum("li");
898 for (t = tstr; t->name != NULL; t++) {
899 /* XXX: some systems' tgetstr needs non const */
900 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name),
901 &area));
902 }
903 }
904
905 if (Val(T_co) < 2)
906 Val(T_co) = 80; /* just in case */
907 if (Val(T_li) < 1)
908 Val(T_li) = 24;
909
910 el->el_terminal.t_size.v = Val(T_co);
911 el->el_terminal.t_size.h = Val(T_li);
912
913 terminal_setflags(el);
914
915 /* get the correct window size */
916 (void) terminal_get_size(el, &lins, &cols);
917 if (terminal_change_size(el, lins, cols) == -1)
918 return -1;
919 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
920 terminal_bind_arrow(el);
921 el->el_terminal.t_name = term;
922 return i <= 0 ? -1 : 0;
923 }
924
925
926 /* terminal_get_size():
927 * Return the new window size in lines and cols, and
928 * true if the size was changed.
929 */
930 libedit_private int
terminal_get_size(EditLine * el,int * lins,int * cols)931 terminal_get_size(EditLine *el, int *lins, int *cols)
932 {
933
934 *cols = Val(T_co);
935 *lins = Val(T_li);
936
937 #ifdef TIOCGWINSZ
938 {
939 struct winsize ws;
940 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) {
941 if (ws.ws_col)
942 *cols = ws.ws_col;
943 if (ws.ws_row)
944 *lins = ws.ws_row;
945 }
946 }
947 #endif
948 #ifdef TIOCGSIZE
949 {
950 struct ttysize ts;
951 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) {
952 if (ts.ts_cols)
953 *cols = ts.ts_cols;
954 if (ts.ts_lines)
955 *lins = ts.ts_lines;
956 }
957 }
958 #endif
959 return Val(T_co) != *cols || Val(T_li) != *lins;
960 }
961
962
963 /* terminal_change_size():
964 * Change the size of the terminal
965 */
966 libedit_private int
terminal_change_size(EditLine * el,int lins,int cols)967 terminal_change_size(EditLine *el, int lins, int cols)
968 {
969 /*
970 * Just in case
971 */
972 Val(T_co) = (cols < 2) ? 80 : cols;
973 Val(T_li) = (lins < 1) ? 24 : lins;
974
975 /* re-make display buffers */
976 if (terminal_rebuffer_display(el) == -1)
977 return -1;
978 re_clear_display(el);
979 return 0;
980 }
981
982
983 /* terminal_init_arrow():
984 * Initialize the arrow key bindings from termcap
985 */
986 static void
terminal_init_arrow(EditLine * el)987 terminal_init_arrow(EditLine *el)
988 {
989 funckey_t *arrow = el->el_terminal.t_fkey;
990
991 arrow[A_K_DN].name = L"down";
992 arrow[A_K_DN].key = T_kd;
993 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
994 arrow[A_K_DN].type = XK_CMD;
995
996 arrow[A_K_UP].name = L"up";
997 arrow[A_K_UP].key = T_ku;
998 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
999 arrow[A_K_UP].type = XK_CMD;
1000
1001 arrow[A_K_LT].name = L"left";
1002 arrow[A_K_LT].key = T_kl;
1003 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1004 arrow[A_K_LT].type = XK_CMD;
1005
1006 arrow[A_K_RT].name = L"right";
1007 arrow[A_K_RT].key = T_kr;
1008 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1009 arrow[A_K_RT].type = XK_CMD;
1010
1011 arrow[A_K_HO].name = L"home";
1012 arrow[A_K_HO].key = T_kh;
1013 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1014 arrow[A_K_HO].type = XK_CMD;
1015
1016 arrow[A_K_EN].name = L"end";
1017 arrow[A_K_EN].key = T_at7;
1018 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1019 arrow[A_K_EN].type = XK_CMD;
1020
1021 arrow[A_K_DE].name = L"delete";
1022 arrow[A_K_DE].key = T_kD;
1023 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR;
1024 arrow[A_K_DE].type = XK_CMD;
1025 }
1026
1027
1028 /* terminal_reset_arrow():
1029 * Reset arrow key bindings
1030 */
1031 static void
terminal_reset_arrow(EditLine * el)1032 terminal_reset_arrow(EditLine *el)
1033 {
1034 funckey_t *arrow = el->el_terminal.t_fkey;
1035 static const wchar_t strA[] = L"\033[A";
1036 static const wchar_t strB[] = L"\033[B";
1037 static const wchar_t strC[] = L"\033[C";
1038 static const wchar_t strD[] = L"\033[D";
1039 static const wchar_t strH[] = L"\033[H";
1040 static const wchar_t strF[] = L"\033[F";
1041 static const wchar_t stOA[] = L"\033OA";
1042 static const wchar_t stOB[] = L"\033OB";
1043 static const wchar_t stOC[] = L"\033OC";
1044 static const wchar_t stOD[] = L"\033OD";
1045 static const wchar_t stOH[] = L"\033OH";
1046 static const wchar_t stOF[] = L"\033OF";
1047
1048 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1049 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1050 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1051 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1052 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1053 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1054 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1055 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1056 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1057 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1058 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1059 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1060
1061 if (el->el_map.type != MAP_VI)
1062 return;
1063 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1064 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1065 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1066 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1067 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1068 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1069 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1070 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1071 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1072 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1073 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1074 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1075 }
1076
1077
1078 /* terminal_set_arrow():
1079 * Set an arrow key binding
1080 */
1081 libedit_private int
terminal_set_arrow(EditLine * el,const wchar_t * name,keymacro_value_t * fun,int type)1082 terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun,
1083 int type)
1084 {
1085 funckey_t *arrow = el->el_terminal.t_fkey;
1086 int i;
1087
1088 for (i = 0; i < A_K_NKEYS; i++)
1089 if (wcscmp(name, arrow[i].name) == 0) {
1090 arrow[i].fun = *fun;
1091 arrow[i].type = type;
1092 return 0;
1093 }
1094 return -1;
1095 }
1096
1097
1098 /* terminal_clear_arrow():
1099 * Clear an arrow key binding
1100 */
1101 libedit_private int
terminal_clear_arrow(EditLine * el,const wchar_t * name)1102 terminal_clear_arrow(EditLine *el, const wchar_t *name)
1103 {
1104 funckey_t *arrow = el->el_terminal.t_fkey;
1105 int i;
1106
1107 for (i = 0; i < A_K_NKEYS; i++)
1108 if (wcscmp(name, arrow[i].name) == 0) {
1109 arrow[i].type = XK_NOD;
1110 return 0;
1111 }
1112 return -1;
1113 }
1114
1115
1116 /* terminal_print_arrow():
1117 * Print the arrow key bindings
1118 */
1119 libedit_private void
terminal_print_arrow(EditLine * el,const wchar_t * name)1120 terminal_print_arrow(EditLine *el, const wchar_t *name)
1121 {
1122 int i;
1123 funckey_t *arrow = el->el_terminal.t_fkey;
1124
1125 for (i = 0; i < A_K_NKEYS; i++)
1126 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0)
1127 if (arrow[i].type != XK_NOD)
1128 keymacro_kprint(el, arrow[i].name,
1129 &arrow[i].fun, arrow[i].type);
1130 }
1131
1132
1133 /* terminal_bind_arrow():
1134 * Bind the arrow keys
1135 */
1136 libedit_private void
terminal_bind_arrow(EditLine * el)1137 terminal_bind_arrow(EditLine *el)
1138 {
1139 el_action_t *map;
1140 const el_action_t *dmap;
1141 int i, j;
1142 char *p;
1143 funckey_t *arrow = el->el_terminal.t_fkey;
1144
1145 /* Check if the components needed are initialized */
1146 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL)
1147 return;
1148
1149 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1150 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1151
1152 terminal_reset_arrow(el);
1153
1154 for (i = 0; i < A_K_NKEYS; i++) {
1155 wchar_t wt_str[VISUAL_WIDTH_MAX];
1156 wchar_t *px;
1157 size_t n;
1158
1159 p = el->el_terminal.t_str[arrow[i].key];
1160 if (!p || !*p)
1161 continue;
1162 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n)
1163 wt_str[n] = p[n];
1164 while (n < VISUAL_WIDTH_MAX)
1165 wt_str[n++] = '\0';
1166 px = wt_str;
1167 j = (unsigned char) *p;
1168 /*
1169 * Assign the arrow keys only if:
1170 *
1171 * 1. They are multi-character arrow keys and the user
1172 * has not re-assigned the leading character, or
1173 * has re-assigned the leading character to be
1174 * ED_SEQUENCE_LEAD_IN
1175 * 2. They are single arrow keys pointing to an
1176 * unassigned key.
1177 */
1178 if (arrow[i].type == XK_NOD)
1179 keymacro_clear(el, map, px);
1180 else {
1181 if (p[1] && (dmap[j] == map[j] ||
1182 map[j] == ED_SEQUENCE_LEAD_IN)) {
1183 keymacro_add(el, px, &arrow[i].fun,
1184 arrow[i].type);
1185 map[j] = ED_SEQUENCE_LEAD_IN;
1186 } else if (map[j] == ED_UNASSIGNED) {
1187 keymacro_clear(el, map, px);
1188 if (arrow[i].type == XK_CMD)
1189 map[j] = arrow[i].fun.cmd;
1190 else
1191 keymacro_add(el, px, &arrow[i].fun,
1192 arrow[i].type);
1193 }
1194 }
1195 }
1196 }
1197
1198 /* terminal_putc():
1199 * Add a character
1200 */
1201 static int
terminal_putc(int c)1202 terminal_putc(int c)
1203 {
1204 if (terminal_outfile == NULL)
1205 return -1;
1206 return fputc(c, terminal_outfile);
1207 }
1208
1209 static void
terminal_tputs(EditLine * el,const char * cap,int affcnt)1210 terminal_tputs(EditLine *el, const char *cap, int affcnt)
1211 {
1212 #ifdef _REENTRANT
1213 pthread_mutex_lock(&terminal_mutex);
1214 #endif
1215 terminal_outfile = el->el_outfile;
1216 (void)tputs(cap, affcnt, terminal_putc);
1217 #ifdef _REENTRANT
1218 pthread_mutex_unlock(&terminal_mutex);
1219 #endif
1220 }
1221
1222 /* terminal__putc():
1223 * Add a character
1224 */
1225 libedit_private int
terminal__putc(EditLine * el,wint_t c)1226 terminal__putc(EditLine *el, wint_t c)
1227 {
1228 char buf[MB_LEN_MAX +1];
1229 ssize_t i;
1230 if (c == (wint_t)MB_FILL_CHAR)
1231 return 0;
1232 if (c & EL_LITERAL)
1233 return fputs(literal_get(el, c), el->el_outfile);
1234 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c);
1235 if (i <= 0)
1236 return (int)i;
1237 buf[i] = '\0';
1238 return fputs(buf, el->el_outfile);
1239 }
1240
1241 /* terminal__flush():
1242 * Flush output
1243 */
1244 libedit_private void
terminal__flush(EditLine * el)1245 terminal__flush(EditLine *el)
1246 {
1247
1248 (void) fflush(el->el_outfile);
1249 }
1250
1251 /* terminal_writec():
1252 * Write the given character out, in a human readable form
1253 */
1254 libedit_private void
terminal_writec(EditLine * el,wint_t c)1255 terminal_writec(EditLine *el, wint_t c)
1256 {
1257 wchar_t visbuf[VISUAL_WIDTH_MAX +1];
1258 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c);
1259 if (vcnt < 0)
1260 vcnt = 0;
1261 visbuf[vcnt] = '\0';
1262 terminal_overwrite(el, visbuf, (size_t)vcnt);
1263 terminal__flush(el);
1264 }
1265
1266
1267 /* terminal_telltc():
1268 * Print the current termcap characteristics
1269 */
1270 libedit_private int
1271 /*ARGSUSED*/
terminal_telltc(EditLine * el,int argc,const wchar_t ** argv)1272 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)),
1273 const wchar_t **argv __attribute__((__unused__)))
1274 {
1275 const struct termcapstr *t;
1276 char **ts;
1277
1278 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1279 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1280 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1281 Val(T_co), Val(T_li));
1282 (void) fprintf(el->el_outfile,
1283 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1284 (void) fprintf(el->el_outfile,
1285 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1286 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1287 EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1288 if (EL_HAS_AUTO_MARGINS)
1289 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1290 EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1291
1292 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) {
1293 const char *ub;
1294 if (*ts && **ts) {
1295 ub = ct_encode_string(ct_visual_string(
1296 ct_decode_string(*ts, &el->el_scratch),
1297 &el->el_visual), &el->el_scratch);
1298 } else {
1299 ub = "(empty)";
1300 }
1301 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1302 t->long_name, t->name, ub);
1303 }
1304 (void) fputc('\n', el->el_outfile);
1305 return 0;
1306 }
1307
1308
1309 /* terminal_settc():
1310 * Change the current terminal characteristics
1311 */
1312 libedit_private int
1313 /*ARGSUSED*/
terminal_settc(EditLine * el,int argc,const wchar_t ** argv)1314 terminal_settc(EditLine *el, int argc __attribute__((__unused__)),
1315 const wchar_t **argv)
1316 {
1317 const struct termcapstr *ts;
1318 const struct termcapval *tv;
1319 char what[8], how[8];
1320
1321 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1322 return -1;
1323
1324 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what));
1325 what[sizeof(what) - 1] = '\0';
1326 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how));
1327 how[sizeof(how) - 1] = '\0';
1328
1329 /*
1330 * Do the strings first
1331 */
1332 for (ts = tstr; ts->name != NULL; ts++)
1333 if (strcmp(ts->name, what) == 0)
1334 break;
1335
1336 if (ts->name != NULL) {
1337 terminal_alloc(el, ts, how);
1338 terminal_setflags(el);
1339 return 0;
1340 }
1341 /*
1342 * Do the numeric ones second
1343 */
1344 for (tv = tval; tv->name != NULL; tv++)
1345 if (strcmp(tv->name, what) == 0)
1346 break;
1347
1348 if (tv->name != NULL)
1349 return -1;
1350
1351 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1352 tv == &tval[T_am] || tv == &tval[T_xn]) {
1353 if (strcmp(how, "yes") == 0)
1354 el->el_terminal.t_val[tv - tval] = 1;
1355 else if (strcmp(how, "no") == 0)
1356 el->el_terminal.t_val[tv - tval] = 0;
1357 else {
1358 (void) fprintf(el->el_errfile,
1359 "%ls: Bad value `%s'.\n", argv[0], how);
1360 return -1;
1361 }
1362 terminal_setflags(el);
1363 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1)
1364 return -1;
1365 return 0;
1366 } else {
1367 long i;
1368 char *ep;
1369
1370 i = strtol(how, &ep, 10);
1371 if (*ep != '\0') {
1372 (void) fprintf(el->el_errfile,
1373 "%ls: Bad value `%s'.\n", argv[0], how);
1374 return -1;
1375 }
1376 el->el_terminal.t_val[tv - tval] = (int) i;
1377 el->el_terminal.t_size.v = Val(T_co);
1378 el->el_terminal.t_size.h = Val(T_li);
1379 if (tv == &tval[T_co] || tv == &tval[T_li])
1380 if (terminal_change_size(el, Val(T_li), Val(T_co))
1381 == -1)
1382 return -1;
1383 return 0;
1384 }
1385 }
1386
1387
1388 /* terminal_gettc():
1389 * Get the current terminal characteristics
1390 */
1391 libedit_private int
1392 /*ARGSUSED*/
terminal_gettc(EditLine * el,int argc,char ** argv)1393 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv)
1394 {
1395 const struct termcapstr *ts;
1396 const struct termcapval *tv;
1397 char *what;
1398 void *how;
1399
1400 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1401 return -1;
1402
1403 what = argv[1];
1404 how = argv[2];
1405
1406 /*
1407 * Do the strings first
1408 */
1409 for (ts = tstr; ts->name != NULL; ts++)
1410 if (strcmp(ts->name, what) == 0)
1411 break;
1412
1413 if (ts->name != NULL) {
1414 *(char **)how = el->el_terminal.t_str[ts - tstr];
1415 return 0;
1416 }
1417 /*
1418 * Do the numeric ones second
1419 */
1420 for (tv = tval; tv->name != NULL; tv++)
1421 if (strcmp(tv->name, what) == 0)
1422 break;
1423
1424 if (tv->name == NULL)
1425 return -1;
1426
1427 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1428 tv == &tval[T_am] || tv == &tval[T_xn]) {
1429 static char yes[] = "yes";
1430 static char no[] = "no";
1431 if (el->el_terminal.t_val[tv - tval])
1432 *(char **)how = yes;
1433 else
1434 *(char **)how = no;
1435 return 0;
1436 } else {
1437 *(int *)how = el->el_terminal.t_val[tv - tval];
1438 return 0;
1439 }
1440 }
1441
1442 /* terminal_echotc():
1443 * Print the termcap string out with variable substitution
1444 */
1445 libedit_private int
1446 /*ARGSUSED*/
terminal_echotc(EditLine * el,int argc,const wchar_t ** argv)1447 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)),
1448 const wchar_t **argv)
1449 {
1450 char *cap, *scap;
1451 wchar_t *ep;
1452 int arg_need, arg_cols, arg_rows;
1453 int verbose = 0, silent = 0;
1454 char *area;
1455 static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1456 const struct termcapstr *t;
1457 char buf[TC_BUFSIZE];
1458 long i;
1459
1460 area = buf;
1461
1462 if (argv == NULL || argv[1] == NULL)
1463 return -1;
1464 argv++;
1465
1466 if (argv[0][0] == '-') {
1467 switch (argv[0][1]) {
1468 case 'v':
1469 verbose = 1;
1470 break;
1471 case 's':
1472 silent = 1;
1473 break;
1474 default:
1475 /* stderror(ERR_NAME | ERR_TCUSAGE); */
1476 break;
1477 }
1478 argv++;
1479 }
1480 if (!*argv || *argv[0] == '\0')
1481 return 0;
1482 if (wcscmp(*argv, L"tabs") == 0) {
1483 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1484 return 0;
1485 } else if (wcscmp(*argv, L"meta") == 0) {
1486 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1487 return 0;
1488 } else if (wcscmp(*argv, L"xn") == 0) {
1489 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1490 "yes" : "no");
1491 return 0;
1492 } else if (wcscmp(*argv, L"am") == 0) {
1493 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1494 "yes" : "no");
1495 return 0;
1496 } else if (wcscmp(*argv, L"baud") == 0) {
1497 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
1498 return 0;
1499 } else if (wcscmp(*argv, L"rows") == 0 ||
1500 wcscmp(*argv, L"lines") == 0) {
1501 (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1502 return 0;
1503 } else if (wcscmp(*argv, L"cols") == 0) {
1504 (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1505 return 0;
1506 }
1507 /*
1508 * Try to use our local definition first
1509 */
1510 scap = NULL;
1511 for (t = tstr; t->name != NULL; t++)
1512 if (strcmp(t->name,
1513 ct_encode_string(*argv, &el->el_scratch)) == 0) {
1514 scap = el->el_terminal.t_str[t - tstr];
1515 break;
1516 }
1517 if (t->name == NULL) {
1518 /* XXX: some systems' tgetstr needs non const */
1519 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area);
1520 }
1521 if (!scap || scap[0] == '\0') {
1522 if (!silent)
1523 (void) fprintf(el->el_errfile,
1524 "echotc: Termcap parameter `%ls' not found.\n",
1525 *argv);
1526 return -1;
1527 }
1528 /*
1529 * Count home many values we need for this capability.
1530 */
1531 for (cap = scap, arg_need = 0; *cap; cap++)
1532 if (*cap == '%')
1533 switch (*++cap) {
1534 case 'd':
1535 case '2':
1536 case '3':
1537 case '.':
1538 case '+':
1539 arg_need++;
1540 break;
1541 case '%':
1542 case '>':
1543 case 'i':
1544 case 'r':
1545 case 'n':
1546 case 'B':
1547 case 'D':
1548 break;
1549 default:
1550 /*
1551 * hpux has lot's of them...
1552 */
1553 if (verbose)
1554 (void) fprintf(el->el_errfile,
1555 "echotc: Warning: unknown termcap %% `%c'.\n",
1556 *cap);
1557 /* This is bad, but I won't complain */
1558 break;
1559 }
1560
1561 switch (arg_need) {
1562 case 0:
1563 argv++;
1564 if (*argv && *argv[0]) {
1565 if (!silent)
1566 (void) fprintf(el->el_errfile,
1567 "echotc: Warning: Extra argument `%ls'.\n",
1568 *argv);
1569 return -1;
1570 }
1571 terminal_tputs(el, scap, 1);
1572 break;
1573 case 1:
1574 argv++;
1575 if (!*argv || *argv[0] == '\0') {
1576 if (!silent)
1577 (void) fprintf(el->el_errfile,
1578 "echotc: Warning: Missing argument.\n");
1579 return -1;
1580 }
1581 arg_cols = 0;
1582 i = wcstol(*argv, &ep, 10);
1583 if (*ep != '\0' || i < 0) {
1584 if (!silent)
1585 (void) fprintf(el->el_errfile,
1586 "echotc: Bad value `%ls' for rows.\n",
1587 *argv);
1588 return -1;
1589 }
1590 arg_rows = (int) i;
1591 argv++;
1592 if (*argv && *argv[0]) {
1593 if (!silent)
1594 (void) fprintf(el->el_errfile,
1595 "echotc: Warning: Extra argument `%ls"
1596 "'.\n", *argv);
1597 return -1;
1598 }
1599 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1);
1600 break;
1601 default:
1602 /* This is wrong, but I will ignore it... */
1603 if (verbose)
1604 (void) fprintf(el->el_errfile,
1605 "echotc: Warning: Too many required arguments (%d).\n",
1606 arg_need);
1607 /* FALLTHROUGH */
1608 case 2:
1609 argv++;
1610 if (!*argv || *argv[0] == '\0') {
1611 if (!silent)
1612 (void) fprintf(el->el_errfile,
1613 "echotc: Warning: Missing argument.\n");
1614 return -1;
1615 }
1616 i = wcstol(*argv, &ep, 10);
1617 if (*ep != '\0' || i < 0) {
1618 if (!silent)
1619 (void) fprintf(el->el_errfile,
1620 "echotc: Bad value `%ls' for cols.\n",
1621 *argv);
1622 return -1;
1623 }
1624 arg_cols = (int) i;
1625 argv++;
1626 if (!*argv || *argv[0] == '\0') {
1627 if (!silent)
1628 (void) fprintf(el->el_errfile,
1629 "echotc: Warning: Missing argument.\n");
1630 return -1;
1631 }
1632 i = wcstol(*argv, &ep, 10);
1633 if (*ep != '\0' || i < 0) {
1634 if (!silent)
1635 (void) fprintf(el->el_errfile,
1636 "echotc: Bad value `%ls' for rows.\n",
1637 *argv);
1638 return -1;
1639 }
1640 arg_rows = (int) i;
1641 if (*ep != '\0') {
1642 if (!silent)
1643 (void) fprintf(el->el_errfile,
1644 "echotc: Bad value `%ls'.\n", *argv);
1645 return -1;
1646 }
1647 argv++;
1648 if (*argv && *argv[0]) {
1649 if (!silent)
1650 (void) fprintf(el->el_errfile,
1651 "echotc: Warning: Extra argument `%ls"
1652 "'.\n", *argv);
1653 return -1;
1654 }
1655 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows);
1656 break;
1657 }
1658 return 0;
1659 }
1660