1 /* $NetBSD: terminal.c,v 1.10 2011/10/04 15:27:04 christos Exp $ */
2
3 /*-
4 * Copyright (c) 1992, 2015
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 #endif
41 #endif /* not lint && not SCCSID */
42
43 /*
44 * terminal.c: Editor/termcap-curses interface
45 * We have to declare a static variable here, since the
46 * termcap putchar routine does not take an argument!
47 */
48 #include <stdio.h>
49 #include <signal.h>
50 #include <string.h>
51 #include <stdlib.h>
52 #include <unistd.h>
53 #include <limits.h>
54 #if 0 /* TODO: do we need this */
55 #ifdef HAVE_TERMCAP_H
56 #include <termcap.h>
57 #endif
58 #endif
59 #ifdef HAVE_CURSES_H
60 #include <curses.h>
61 #elif HAVE_NCURSES_H
62 #include <ncurses.h>
63 #endif
64
65 /* Solaris's term.h does horrid things. */
66 #if defined(HAVE_TERM_H) && !defined(__sun)
67 #include <term.h>
68 #endif
69
70 #include <sys/types.h>
71 #include <sys/ioctl.h>
72
73 #ifdef _REENTRANT
74 #include <pthread.h>
75 #endif
76
77 #include "el.h"
78
79 /*
80 * IMPORTANT NOTE: these routines are allowed to look at the current screen
81 * and the current position assuming that it is correct. If this is not
82 * true, then the update will be WRONG! This is (should be) a valid
83 * assumption...
84 */
85
86 #define TC_BUFSIZE ((size_t)2048)
87
88 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \
89 el->el_terminal.t_str[a][0] != '\0')
90 #define Str(a) el->el_terminal.t_str[a]
91 #define Val(a) el->el_terminal.t_val[a]
92
93 private const struct termcapstr {
94 const char *name;
95 const char *long_name;
96 } tstr[] = {
97 #define T_al 0
98 { "al", "add new blank line" },
99 #define T_bl 1
100 { "bl", "audible bell" },
101 #define T_cd 2
102 { "cd", "clear to bottom" },
103 #define T_ce 3
104 { "ce", "clear to end of line" },
105 #define T_ch 4
106 { "ch", "cursor to horiz pos" },
107 #define T_cl 5
108 { "cl", "clear screen" },
109 #define T_dc 6
110 { "dc", "delete a character" },
111 #define T_dl 7
112 { "dl", "delete a line" },
113 #define T_dm 8
114 { "dm", "start delete mode" },
115 #define T_ed 9
116 { "ed", "end delete mode" },
117 #define T_ei 10
118 { "ei", "end insert mode" },
119 #define T_fs 11
120 { "fs", "cursor from status line" },
121 #define T_ho 12
122 { "ho", "home cursor" },
123 #define T_ic 13
124 { "ic", "insert character" },
125 #define T_im 14
126 { "im", "start insert mode" },
127 #define T_ip 15
128 { "ip", "insert padding" },
129 #define T_kd 16
130 { "kd", "sends cursor down" },
131 #define T_kl 17
132 { "kl", "sends cursor left" },
133 #define T_kr 18
134 { "kr", "sends cursor right" },
135 #define T_ku 19
136 { "ku", "sends cursor up" },
137 #define T_md 20
138 { "md", "begin bold" },
139 #define T_me 21
140 { "me", "end attributes" },
141 #define T_nd 22
142 { "nd", "non destructive space" },
143 #define T_se 23
144 { "se", "end standout" },
145 #define T_so 24
146 { "so", "begin standout" },
147 #define T_ts 25
148 { "ts", "cursor to status line" },
149 #define T_up 26
150 { "up", "cursor up one" },
151 #define T_us 27
152 { "us", "begin underline" },
153 #define T_ue 28
154 { "ue", "end underline" },
155 #define T_vb 29
156 { "vb", "visible bell" },
157 #define T_DC 30
158 { "DC", "delete multiple chars" },
159 #define T_DO 31
160 { "DO", "cursor down multiple" },
161 #define T_IC 32
162 { "IC", "insert multiple chars" },
163 #define T_LE 33
164 { "LE", "cursor left multiple" },
165 #define T_RI 34
166 { "RI", "cursor right multiple" },
167 #define T_UP 35
168 { "UP", "cursor up multiple" },
169 #define T_kh 36
170 { "kh", "send cursor home" },
171 #define T_at7 37
172 { "@7", "send cursor end" },
173 #define T_str 38
174 { NULL, NULL }
175 };
176
177 private const struct termcapval {
178 const char *name;
179 const char *long_name;
180 } tval[] = {
181 #define T_am 0
182 { "am", "has automatic margins" },
183 #define T_pt 1
184 { "pt", "has physical tabs" },
185 #define T_li 2
186 { "li", "Number of lines" },
187 #define T_co 3
188 { "co", "Number of columns" },
189 #define T_km 4
190 { "km", "Has meta key" },
191 #define T_xt 5
192 { "xt", "Tab chars destructive" },
193 #define T_xn 6
194 { "xn", "newline ignored at right margin" },
195 #define T_MT 7
196 { "MT", "Has meta key" }, /* XXX? */
197 #define T_val 8
198 { NULL, NULL, }
199 };
200 /* do two or more of the attributes use me */
201
202 private void terminal_setflags(EditLine *);
203 private int terminal_rebuffer_display(EditLine *);
204 private void terminal_free_display(EditLine *);
205 private int terminal_alloc_display(EditLine *);
206 private void terminal_alloc(EditLine *, const struct termcapstr *,
207 const char *);
208 private void terminal_init_arrow(EditLine *);
209 private void terminal_reset_arrow(EditLine *);
210 private int terminal_putc(int);
211 private void terminal_tputs(EditLine *, const char *, int);
212
213 #ifdef _REENTRANT
214 private pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER;
215 #endif
216 private FILE *terminal_outfile = NULL;
217
218
219 /* terminal_setflags():
220 * Set the terminal capability flags
221 */
222 private void
terminal_setflags(EditLine * el)223 terminal_setflags(EditLine *el)
224 {
225 EL_FLAGS = 0;
226 if (el->el_tty.t_tabs)
227 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
228
229 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
230 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
231 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
232 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
233 TERM_CAN_INSERT : 0;
234 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
235 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
236 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
237
238 if (GoodStr(T_me) && GoodStr(T_ue))
239 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
240 TERM_CAN_ME : 0;
241 else
242 EL_FLAGS &= ~TERM_CAN_ME;
243 if (GoodStr(T_me) && GoodStr(T_se))
244 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
245 TERM_CAN_ME : 0;
246
247
248 #ifdef DEBUG_SCREEN
249 if (!EL_CAN_UP) {
250 (void) fprintf(el->el_errfile,
251 "WARNING: Your terminal cannot move up.\n");
252 (void) fprintf(el->el_errfile,
253 "Editing may be odd for long lines.\n");
254 }
255 if (!EL_CAN_CEOL)
256 (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
257 if (!EL_CAN_DELETE)
258 (void) fprintf(el->el_errfile, "no delete char capability.\n");
259 if (!EL_CAN_INSERT)
260 (void) fprintf(el->el_errfile, "no insert char capability.\n");
261 #endif /* DEBUG_SCREEN */
262 }
263
264 /* terminal_init():
265 * Initialize the terminal stuff
266 */
267 protected int
terminal_init(EditLine * el)268 terminal_init(EditLine *el)
269 {
270
271 el->el_terminal.t_buf = el_malloc(TC_BUFSIZE *
272 sizeof(*el->el_terminal.t_buf));
273 if (el->el_terminal.t_buf == NULL)
274 return -1;
275 el->el_terminal.t_cap = el_malloc(TC_BUFSIZE *
276 sizeof(*el->el_terminal.t_cap));
277 if (el->el_terminal.t_cap == NULL)
278 return -1;
279 el->el_terminal.t_fkey = el_malloc(A_K_NKEYS *
280 sizeof(*el->el_terminal.t_fkey));
281 if (el->el_terminal.t_fkey == NULL)
282 return -1;
283 el->el_terminal.t_loc = 0;
284 el->el_terminal.t_str = el_malloc(T_str *
285 sizeof(*el->el_terminal.t_str));
286 if (el->el_terminal.t_str == NULL)
287 return -1;
288 (void) memset(el->el_terminal.t_str, 0, T_str *
289 sizeof(*el->el_terminal.t_str));
290 el->el_terminal.t_val = el_malloc(T_val *
291 sizeof(*el->el_terminal.t_val));
292 if (el->el_terminal.t_val == NULL)
293 return -1;
294 (void) memset(el->el_terminal.t_val, 0, T_val *
295 sizeof(*el->el_terminal.t_val));
296 (void) terminal_set(el, NULL);
297 terminal_init_arrow(el);
298 return 0;
299 }
300
301 /* terminal_end():
302 * Clean up the terminal stuff
303 */
304 protected void
terminal_end(EditLine * el)305 terminal_end(EditLine *el)
306 {
307
308 el_free(el->el_terminal.t_buf);
309 el->el_terminal.t_buf = NULL;
310 el_free(el->el_terminal.t_cap);
311 el->el_terminal.t_cap = NULL;
312 el->el_terminal.t_loc = 0;
313 el_free(el->el_terminal.t_str);
314 el->el_terminal.t_str = NULL;
315 el_free(el->el_terminal.t_val);
316 el->el_terminal.t_val = NULL;
317 el_free(el->el_terminal.t_fkey);
318 el->el_terminal.t_fkey = NULL;
319 terminal_free_display(el);
320 }
321
322
323 /* terminal_alloc():
324 * Maintain a string pool for termcap strings
325 */
326 private void
terminal_alloc(EditLine * el,const struct termcapstr * t,const char * cap)327 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
328 {
329 char termbuf[TC_BUFSIZE];
330 size_t tlen, clen;
331 char **tlist = el->el_terminal.t_str;
332 char **tmp, **str = &tlist[t - tstr];
333
334 if (cap == NULL || *cap == '\0') {
335 *str = NULL;
336 return;
337 } else
338 clen = strlen(cap);
339
340 tlen = *str == NULL ? 0 : strlen(*str);
341
342 /*
343 * New string is shorter; no need to allocate space
344 */
345 if (clen <= tlen) {
346 if (*str)
347 (void) strcpy(*str, cap); /* XXX strcpy is safe */
348 return;
349 }
350 /*
351 * New string is longer; see if we have enough space to append
352 */
353 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) {
354 /* XXX strcpy is safe */
355 (void) strcpy(*str = &el->el_terminal.t_buf[
356 el->el_terminal.t_loc], cap);
357 el->el_terminal.t_loc += clen + 1; /* one for \0 */
358 return;
359 }
360 /*
361 * Compact our buffer; no need to check compaction, cause we know it
362 * fits...
363 */
364 tlen = 0;
365 for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
366 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
367 char *ptr;
368
369 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
370 continue;
371 termbuf[tlen++] = '\0';
372 }
373 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE);
374 el->el_terminal.t_loc = tlen;
375 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) {
376 (void) fprintf(el->el_errfile,
377 "Out of termcap string space.\n");
378 return;
379 }
380 /* XXX strcpy is safe */
381 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc],
382 cap);
383 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */
384 return;
385 }
386
387
388 /* terminal_rebuffer_display():
389 * Rebuffer the display after the screen changed size
390 */
391 private int
terminal_rebuffer_display(EditLine * el)392 terminal_rebuffer_display(EditLine *el)
393 {
394 coord_t *c = &el->el_terminal.t_size;
395
396 terminal_free_display(el);
397
398 c->h = Val(T_co);
399 c->v = Val(T_li);
400
401 if (terminal_alloc_display(el) == -1)
402 return -1;
403 return 0;
404 }
405
406
407 /* terminal_alloc_display():
408 * Allocate a new display.
409 */
410 private int
terminal_alloc_display(EditLine * el)411 terminal_alloc_display(EditLine *el)
412 {
413 int i;
414 Char **b;
415 coord_t *c = &el->el_terminal.t_size;
416
417 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
418 if (b == NULL)
419 return -1;
420 for (i = 0; i < c->v; i++) {
421 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
422 if (b[i] == NULL) {
423 while (--i >= 0)
424 el_free(b[i]);
425 el_free(b);
426 return -1;
427 }
428 }
429 b[c->v] = NULL;
430 el->el_display = b;
431
432 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
433 if (b == NULL)
434 return -1;
435 for (i = 0; i < c->v; i++) {
436 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
437 if (b[i] == NULL) {
438 while (--i >= 0)
439 el_free(b[i]);
440 el_free(b);
441 return -1;
442 }
443 }
444 b[c->v] = NULL;
445 el->el_vdisplay = b;
446 return 0;
447 }
448
449
450 /* terminal_free_display():
451 * Free the display buffers
452 */
453 private void
terminal_free_display(EditLine * el)454 terminal_free_display(EditLine *el)
455 {
456 Char **b;
457 Char **bufp;
458
459 b = el->el_display;
460 el->el_display = NULL;
461 if (b != NULL) {
462 for (bufp = b; *bufp != NULL; bufp++)
463 el_free(*bufp);
464 el_free(b);
465 }
466 b = el->el_vdisplay;
467 el->el_vdisplay = NULL;
468 if (b != NULL) {
469 for (bufp = b; *bufp != NULL; bufp++)
470 el_free(*bufp);
471 el_free(b);
472 }
473 }
474
475
476 /* terminal_move_to_line():
477 * move to line <where> (first line == 0)
478 * as efficiently as possible
479 */
480 protected void
terminal_move_to_line(EditLine * el,int where)481 terminal_move_to_line(EditLine *el, int where)
482 {
483 int del;
484
485 if (where == el->el_cursor.v)
486 return;
487
488 if (where > el->el_terminal.t_size.v) {
489 #ifdef DEBUG_SCREEN
490 (void) fprintf(el->el_errfile,
491 "terminal_move_to_line: where is ridiculous: %d\r\n",
492 where);
493 #endif /* DEBUG_SCREEN */
494 return;
495 }
496 if ((del = where - el->el_cursor.v) > 0) {
497 while (del > 0) {
498 if (EL_HAS_AUTO_MARGINS &&
499 el->el_display[el->el_cursor.v][0] != '\0') {
500 size_t h = (size_t)
501 (el->el_terminal.t_size.h - 1);
502 #ifdef WIDECHAR
503 for (; h > 0 &&
504 el->el_display[el->el_cursor.v][h] ==
505 MB_FILL_CHAR;
506 h--)
507 continue;
508 #endif
509 /* move without newline */
510 terminal_move_to_char(el, (int)h);
511 terminal_overwrite(el, &el->el_display
512 [el->el_cursor.v][el->el_cursor.h],
513 (size_t)(el->el_terminal.t_size.h -
514 el->el_cursor.h));
515 /* updates Cursor */
516 del--;
517 } else {
518 if ((del > 1) && GoodStr(T_DO)) {
519 terminal_tputs(el, tgoto(Str(T_DO), del,
520 del), del);
521 del = 0;
522 } else {
523 for (; del > 0; del--)
524 terminal__putc(el, '\n');
525 /* because the \n will become \r\n */
526 el->el_cursor.h = 0;
527 }
528 }
529 }
530 } else { /* del < 0 */
531 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
532 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del);
533 else {
534 if (GoodStr(T_up))
535 for (; del < 0; del++)
536 terminal_tputs(el, Str(T_up), 1);
537 }
538 }
539 el->el_cursor.v = where;/* now where is here */
540 }
541
542
543 /* terminal_move_to_char():
544 * Move to the character position specified
545 */
546 protected void
terminal_move_to_char(EditLine * el,int where)547 terminal_move_to_char(EditLine *el, int where)
548 {
549 int del, i;
550
551 mc_again:
552 if (where == el->el_cursor.h)
553 return;
554
555 if (where > el->el_terminal.t_size.h) {
556 #ifdef DEBUG_SCREEN
557 (void) fprintf(el->el_errfile,
558 "terminal_move_to_char: where is riduculous: %d\r\n",
559 where);
560 #endif /* DEBUG_SCREEN */
561 return;
562 }
563 if (!where) { /* if where is first column */
564 terminal__putc(el, '\r'); /* do a CR */
565 el->el_cursor.h = 0;
566 return;
567 }
568 del = where - el->el_cursor.h;
569
570 if ((del < -4 || del > 4) && GoodStr(T_ch))
571 /* go there directly */
572 terminal_tputs(el, tgoto(Str(T_ch), where, where), where);
573 else {
574 if (del > 0) { /* moving forward */
575 if ((del > 4) && GoodStr(T_RI))
576 terminal_tputs(el, tgoto(Str(T_RI), del, del),
577 del);
578 else {
579 /* if I can do tabs, use them */
580 if (EL_CAN_TAB) {
581 if ((el->el_cursor.h & 0370) !=
582 (where & ~0x7)
583 #ifdef WIDECHAR
584 && (el->el_display[
585 el->el_cursor.v][where & 0370] !=
586 MB_FILL_CHAR)
587 #endif
588 ) {
589 /* if not within tab stop */
590 for (i =
591 (el->el_cursor.h & 0370);
592 i < (where & ~0x7);
593 i += 8)
594 terminal__putc(el,
595 '\t');
596 /* then tab over */
597 el->el_cursor.h = where & ~0x7;
598 }
599 }
600 /*
601 * it's usually cheaper to just write the
602 * chars, so we do.
603 */
604 /*
605 * NOTE THAT terminal_overwrite() WILL CHANGE
606 * el->el_cursor.h!!!
607 */
608 terminal_overwrite(el, &el->el_display[
609 el->el_cursor.v][el->el_cursor.h],
610 (size_t)(where - el->el_cursor.h));
611
612 }
613 } else { /* del < 0 := moving backward */
614 if ((-del > 4) && GoodStr(T_LE))
615 terminal_tputs(el, tgoto(Str(T_LE), -del, -del),
616 -del);
617 else { /* can't go directly there */
618 /*
619 * if the "cost" is greater than the "cost"
620 * from col 0
621 */
622 if (EL_CAN_TAB ?
623 ((unsigned int)-del >
624 (((unsigned int) where >> 3) +
625 (where & 07)))
626 : (-del > where)) {
627 terminal__putc(el, '\r');/* do a CR */
628 el->el_cursor.h = 0;
629 goto mc_again; /* and try again */
630 }
631 for (i = 0; i < -del; i++)
632 terminal__putc(el, '\b');
633 }
634 }
635 }
636 el->el_cursor.h = where; /* now where is here */
637 }
638
639
640 /* terminal_overwrite():
641 * Overstrike num characters
642 * Assumes MB_FILL_CHARs are present to keep the column count correct
643 */
644 protected void
terminal_overwrite(EditLine * el,const Char * cp,size_t n)645 terminal_overwrite(EditLine *el, const Char *cp, size_t n)
646 {
647 #ifdef WIDECHAR
648 int width;
649 #endif
650
651 if (n == 0)
652 return;
653
654 if (n > (size_t)el->el_terminal.t_size.h) {
655 #ifdef DEBUG_SCREEN
656 (void) fprintf(el->el_errfile,
657 "terminal_overwrite: n is riduculous: %d\r\n", n);
658 #endif /* DEBUG_SCREEN */
659 return;
660 }
661
662 do {
663 #ifdef WIDECHAR
664 width = wcwidth(*cp); /* Returns -1 for faux character. */
665 if (width != -1)
666 el->el_cursor.h += width;
667 #else
668 el->el_cursor.h++;
669 #endif
670 /* terminal__putc() ignores any MB_FILL_CHARs */
671 terminal__putc(el, *cp++);
672 } while (--n);
673
674 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */
675 if (EL_HAS_AUTO_MARGINS) { /* yes */
676 el->el_cursor.h = 0;
677 el->el_cursor.v++;
678 if (EL_HAS_MAGIC_MARGINS) {
679 /* force the wrap to avoid the "magic"
680 * situation */
681 Char c;
682 if ((c = el->el_display[el->el_cursor.v]
683 [el->el_cursor.h]) != '\0') {
684 terminal_overwrite(el, &c, (size_t)1);
685 #ifdef WIDECHAR
686 while (el->el_display[el->el_cursor.v]
687 [el->el_cursor.h] == MB_FILL_CHAR)
688 el->el_cursor.h++;
689 #endif
690 } else {
691 terminal__putc(el, ' ');
692 el->el_cursor.h = 1;
693 }
694 }
695 } else /* no wrap, but cursor stays on screen */
696 el->el_cursor.h = el->el_terminal.t_size.h - 1;
697 }
698 }
699
700
701 /* terminal_deletechars():
702 * Delete num characters
703 */
704 protected void
terminal_deletechars(EditLine * el,int num)705 terminal_deletechars(EditLine *el, int num)
706 {
707 if (num <= 0)
708 return;
709
710 if (!EL_CAN_DELETE) {
711 #ifdef DEBUG_EDIT
712 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
713 #endif /* DEBUG_EDIT */
714 return;
715 }
716 if (num > el->el_terminal.t_size.h) {
717 #ifdef DEBUG_SCREEN
718 (void) fprintf(el->el_errfile,
719 "terminal_deletechars: num is riduculous: %d\r\n", num);
720 #endif /* DEBUG_SCREEN */
721 return;
722 }
723 if (GoodStr(T_DC)) /* if I have multiple delete */
724 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
725 * expen. */
726 terminal_tputs(el, tgoto(Str(T_DC), num, num), num);
727 return;
728 }
729 if (GoodStr(T_dm)) /* if I have delete mode */
730 terminal_tputs(el, Str(T_dm), 1);
731
732 if (GoodStr(T_dc)) /* else do one at a time */
733 while (num--)
734 terminal_tputs(el, Str(T_dc), 1);
735
736 if (GoodStr(T_ed)) /* if I have delete mode */
737 terminal_tputs(el, Str(T_ed), 1);
738 }
739
740
741 /* terminal_insertwrite():
742 * Puts terminal in insert character mode or inserts num
743 * characters in the line
744 * Assumes MB_FILL_CHARs are present to keep column count correct
745 */
746 protected void
terminal_insertwrite(EditLine * el,Char * cp,int num)747 terminal_insertwrite(EditLine *el, Char *cp, int num)
748 {
749 if (num <= 0)
750 return;
751 if (!EL_CAN_INSERT) {
752 #ifdef DEBUG_EDIT
753 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
754 #endif /* DEBUG_EDIT */
755 return;
756 }
757 if (num > el->el_terminal.t_size.h) {
758 #ifdef DEBUG_SCREEN
759 (void) fprintf(el->el_errfile,
760 "StartInsert: num is riduculous: %d\r\n", num);
761 #endif /* DEBUG_SCREEN */
762 return;
763 }
764 if (GoodStr(T_IC)) /* if I have multiple insert */
765 if ((num > 1) || !GoodStr(T_ic)) {
766 /* if ic would be more expensive */
767 terminal_tputs(el, tgoto(Str(T_IC), num, num), num);
768 terminal_overwrite(el, cp, (size_t)num);
769 /* this updates el_cursor.h */
770 return;
771 }
772 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
773 terminal_tputs(el, Str(T_im), 1);
774
775 el->el_cursor.h += num;
776 do
777 terminal__putc(el, *cp++);
778 while (--num);
779
780 if (GoodStr(T_ip)) /* have to make num chars insert */
781 terminal_tputs(el, Str(T_ip), 1);
782
783 terminal_tputs(el, Str(T_ei), 1);
784 return;
785 }
786 do {
787 if (GoodStr(T_ic)) /* have to make num chars insert */
788 terminal_tputs(el, Str(T_ic), 1);
789
790 terminal__putc(el, *cp++);
791
792 el->el_cursor.h++;
793
794 if (GoodStr(T_ip)) /* have to make num chars insert */
795 terminal_tputs(el, Str(T_ip), 1);
796 /* pad the inserted char */
797
798 } while (--num);
799 }
800
801
802 /* terminal_clear_EOL():
803 * clear to end of line. There are num characters to clear
804 */
805 protected void
terminal_clear_EOL(EditLine * el,int num)806 terminal_clear_EOL(EditLine *el, int num)
807 {
808 int i;
809
810 if (EL_CAN_CEOL && GoodStr(T_ce))
811 terminal_tputs(el, Str(T_ce), 1);
812 else {
813 for (i = 0; i < num; i++)
814 terminal__putc(el, ' ');
815 el->el_cursor.h += num; /* have written num spaces */
816 }
817 }
818
819
820 /* terminal_clear_screen():
821 * Clear the screen
822 */
823 protected void
terminal_clear_screen(EditLine * el)824 terminal_clear_screen(EditLine *el)
825 { /* clear the whole screen and home */
826
827 if (GoodStr(T_cl))
828 /* send the clear screen code */
829 terminal_tputs(el, Str(T_cl), Val(T_li));
830 else if (GoodStr(T_ho) && GoodStr(T_cd)) {
831 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */
832 /* clear to bottom of screen */
833 terminal_tputs(el, Str(T_cd), Val(T_li));
834 } else {
835 terminal__putc(el, '\r');
836 terminal__putc(el, '\n');
837 }
838 }
839
840
841 /* terminal_beep():
842 * Beep the way the terminal wants us
843 */
844 protected void
terminal_beep(EditLine * el)845 terminal_beep(EditLine *el)
846 {
847 if (GoodStr(T_bl))
848 /* what termcap says we should use */
849 terminal_tputs(el, Str(T_bl), 1);
850 else
851 terminal__putc(el, '\007'); /* an ASCII bell; ^G */
852 }
853
854
855 protected void
terminal_get(EditLine * el,const char ** term)856 terminal_get(EditLine *el, const char **term)
857 {
858 *term = el->el_terminal.t_name;
859 }
860
861
862 /* terminal_set():
863 * Read in the terminal capabilities from the requested terminal
864 */
865 protected int
terminal_set(EditLine * el,const char * term)866 terminal_set(EditLine *el, const char *term)
867 {
868 int i;
869 char buf[TC_BUFSIZE];
870 char *area;
871 const struct termcapstr *t;
872 sigset_t oset, nset;
873 int lins, cols;
874
875 (void) sigemptyset(&nset);
876 (void) sigaddset(&nset, SIGWINCH);
877 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
878
879 area = buf;
880
881
882 if (term == NULL)
883 term = getenv("TERM");
884
885 if (!term || !term[0])
886 term = "dumb";
887
888 if (strcmp(term, "emacs") == 0)
889 el->el_flags |= EDIT_DISABLED;
890
891 memset(el->el_terminal.t_cap, 0, TC_BUFSIZE);
892
893 i = tgetent(el->el_terminal.t_cap, term);
894
895 if (i <= 0) {
896 if (i == -1)
897 (void) fprintf(el->el_errfile,
898 "Cannot read termcap database;\n");
899 else if (i == 0)
900 (void) fprintf(el->el_errfile,
901 "No entry for terminal type \"%s\";\n", term);
902 (void) fprintf(el->el_errfile,
903 "using dumb terminal settings.\n");
904 Val(T_co) = 80; /* do a dumb terminal */
905 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
906 Val(T_xt) = Val(T_MT);
907 for (t = tstr; t->name != NULL; t++)
908 terminal_alloc(el, t, NULL);
909 } else {
910 /* auto/magic margins */
911 Val(T_am) = tgetflag("am");
912 Val(T_xn) = tgetflag("xn");
913 /* Can we tab */
914 Val(T_pt) = tgetflag("pt");
915 Val(T_xt) = tgetflag("xt");
916 /* do we have a meta? */
917 Val(T_km) = tgetflag("km");
918 Val(T_MT) = tgetflag("MT");
919 /* Get the size */
920 Val(T_co) = tgetnum("co");
921 Val(T_li) = tgetnum("li");
922 for (t = tstr; t->name != NULL; t++) {
923 /* XXX: some systems' tgetstr needs non const */
924 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name),
925 &area));
926 }
927 }
928
929 if (Val(T_co) < 2)
930 Val(T_co) = 80; /* just in case */
931 if (Val(T_li) < 1)
932 Val(T_li) = 24;
933
934 el->el_terminal.t_size.v = Val(T_co);
935 el->el_terminal.t_size.h = Val(T_li);
936
937 terminal_setflags(el);
938
939 /* get the correct window size */
940 (void) terminal_get_size(el, &lins, &cols);
941 if (terminal_change_size(el, lins, cols) == -1)
942 return -1;
943 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
944 terminal_bind_arrow(el);
945 el->el_terminal.t_name = term;
946 return i <= 0 ? -1 : 0;
947 }
948
949
950 /* terminal_get_size():
951 * Return the new window size in lines and cols, and
952 * true if the size was changed.
953 */
954 protected int
terminal_get_size(EditLine * el,int * lins,int * cols)955 terminal_get_size(EditLine *el, int *lins, int *cols)
956 {
957
958 *cols = Val(T_co);
959 *lins = Val(T_li);
960
961 #ifdef TIOCGWINSZ
962 {
963 struct winsize ws;
964 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) {
965 if (ws.ws_col)
966 *cols = ws.ws_col;
967 if (ws.ws_row)
968 *lins = ws.ws_row;
969 }
970 }
971 #endif
972 #ifdef TIOCGSIZE
973 {
974 struct ttysize ts;
975 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) {
976 if (ts.ts_cols)
977 *cols = ts.ts_cols;
978 if (ts.ts_lines)
979 *lins = ts.ts_lines;
980 }
981 }
982 #endif
983 return Val(T_co) != *cols || Val(T_li) != *lins;
984 }
985
986
987 /* terminal_change_size():
988 * Change the size of the terminal
989 */
990 protected int
terminal_change_size(EditLine * el,int lins,int cols)991 terminal_change_size(EditLine *el, int lins, int cols)
992 {
993 /*
994 * Just in case
995 */
996 Val(T_co) = (cols < 2) ? 80 : cols;
997 Val(T_li) = (lins < 1) ? 24 : lins;
998
999 /* re-make display buffers */
1000 if (terminal_rebuffer_display(el) == -1)
1001 return -1;
1002 re_clear_display(el);
1003 return 0;
1004 }
1005
1006
1007 /* terminal_init_arrow():
1008 * Initialize the arrow key bindings from termcap
1009 */
1010 private void
terminal_init_arrow(EditLine * el)1011 terminal_init_arrow(EditLine *el)
1012 {
1013 funckey_t *arrow = el->el_terminal.t_fkey;
1014
1015 arrow[A_K_DN].name = STR("down");
1016 arrow[A_K_DN].key = T_kd;
1017 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
1018 arrow[A_K_DN].type = XK_CMD;
1019
1020 arrow[A_K_UP].name = STR("up");
1021 arrow[A_K_UP].key = T_ku;
1022 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
1023 arrow[A_K_UP].type = XK_CMD;
1024
1025 arrow[A_K_LT].name = STR("left");
1026 arrow[A_K_LT].key = T_kl;
1027 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1028 arrow[A_K_LT].type = XK_CMD;
1029
1030 arrow[A_K_RT].name = STR("right");
1031 arrow[A_K_RT].key = T_kr;
1032 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1033 arrow[A_K_RT].type = XK_CMD;
1034
1035 arrow[A_K_HO].name = STR("home");
1036 arrow[A_K_HO].key = T_kh;
1037 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1038 arrow[A_K_HO].type = XK_CMD;
1039
1040 arrow[A_K_EN].name = STR("end");
1041 arrow[A_K_EN].key = T_at7;
1042 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1043 arrow[A_K_EN].type = XK_CMD;
1044 }
1045
1046
1047 /* terminal_reset_arrow():
1048 * Reset arrow key bindings
1049 */
1050 private void
terminal_reset_arrow(EditLine * el)1051 terminal_reset_arrow(EditLine *el)
1052 {
1053 funckey_t *arrow = el->el_terminal.t_fkey;
1054 static const Char strA[] = {033, '[', 'A', '\0'};
1055 static const Char strB[] = {033, '[', 'B', '\0'};
1056 static const Char strC[] = {033, '[', 'C', '\0'};
1057 static const Char strD[] = {033, '[', 'D', '\0'};
1058 static const Char strH[] = {033, '[', 'H', '\0'};
1059 static const Char strF[] = {033, '[', 'F', '\0'};
1060 static const Char stOA[] = {033, 'O', 'A', '\0'};
1061 static const Char stOB[] = {033, 'O', 'B', '\0'};
1062 static const Char stOC[] = {033, 'O', 'C', '\0'};
1063 static const Char stOD[] = {033, 'O', 'D', '\0'};
1064 static const Char stOH[] = {033, 'O', 'H', '\0'};
1065 static const Char stOF[] = {033, 'O', 'F', '\0'};
1066
1067 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1068 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1069 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1070 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1071 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1072 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1073 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1074 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1075 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1076 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1077 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1078 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1079
1080 if (el->el_map.type != MAP_VI)
1081 return;
1082 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1083 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1084 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1085 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1086 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1087 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1088 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1089 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1090 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1091 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1092 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1093 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1094 }
1095
1096
1097 /* terminal_set_arrow():
1098 * Set an arrow key binding
1099 */
1100 protected int
terminal_set_arrow(EditLine * el,const Char * name,keymacro_value_t * fun,int type)1101 terminal_set_arrow(EditLine *el, const Char *name, keymacro_value_t *fun,
1102 int type)
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 (Strcmp(name, arrow[i].name) == 0) {
1109 arrow[i].fun = *fun;
1110 arrow[i].type = type;
1111 return 0;
1112 }
1113 return -1;
1114 }
1115
1116
1117 /* terminal_clear_arrow():
1118 * Clear an arrow key binding
1119 */
1120 protected int
terminal_clear_arrow(EditLine * el,const Char * name)1121 terminal_clear_arrow(EditLine *el, const Char *name)
1122 {
1123 funckey_t *arrow = el->el_terminal.t_fkey;
1124 int i;
1125
1126 for (i = 0; i < A_K_NKEYS; i++)
1127 if (Strcmp(name, arrow[i].name) == 0) {
1128 arrow[i].type = XK_NOD;
1129 return 0;
1130 }
1131 return -1;
1132 }
1133
1134
1135 /* terminal_print_arrow():
1136 * Print the arrow key bindings
1137 */
1138 protected void
terminal_print_arrow(EditLine * el,const Char * name)1139 terminal_print_arrow(EditLine *el, const Char *name)
1140 {
1141 int i;
1142 funckey_t *arrow = el->el_terminal.t_fkey;
1143
1144 for (i = 0; i < A_K_NKEYS; i++)
1145 if (*name == '\0' || Strcmp(name, arrow[i].name) == 0)
1146 if (arrow[i].type != XK_NOD)
1147 keymacro_kprint(el, arrow[i].name,
1148 &arrow[i].fun, arrow[i].type);
1149 }
1150
1151
1152 /* terminal_bind_arrow():
1153 * Bind the arrow keys
1154 */
1155 protected void
terminal_bind_arrow(EditLine * el)1156 terminal_bind_arrow(EditLine *el)
1157 {
1158 el_action_t *map;
1159 const el_action_t *dmap;
1160 int i, j;
1161 char *p;
1162 funckey_t *arrow = el->el_terminal.t_fkey;
1163
1164 /* Check if the components needed are initialized */
1165 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL)
1166 return;
1167
1168 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1169 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1170
1171 terminal_reset_arrow(el);
1172
1173 for (i = 0; i < A_K_NKEYS; i++) {
1174 Char wt_str[VISUAL_WIDTH_MAX];
1175 Char *px;
1176 size_t n;
1177
1178 p = el->el_terminal.t_str[arrow[i].key];
1179 if (!p || !*p)
1180 continue;
1181 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n)
1182 wt_str[n] = p[n];
1183 while (n < VISUAL_WIDTH_MAX)
1184 wt_str[n++] = '\0';
1185 px = wt_str;
1186 j = (unsigned char) *p;
1187 /*
1188 * Assign the arrow keys only if:
1189 *
1190 * 1. They are multi-character arrow keys and the user
1191 * has not re-assigned the leading character, or
1192 * has re-assigned the leading character to be
1193 * ED_SEQUENCE_LEAD_IN
1194 * 2. They are single arrow keys pointing to an
1195 * unassigned key.
1196 */
1197 if (arrow[i].type == XK_NOD)
1198 keymacro_clear(el, map, px);
1199 else {
1200 if (p[1] && (dmap[j] == map[j] ||
1201 map[j] == ED_SEQUENCE_LEAD_IN)) {
1202 keymacro_add(el, px, &arrow[i].fun,
1203 arrow[i].type);
1204 map[j] = ED_SEQUENCE_LEAD_IN;
1205 } else if (map[j] == ED_UNASSIGNED) {
1206 keymacro_clear(el, map, px);
1207 if (arrow[i].type == XK_CMD)
1208 map[j] = arrow[i].fun.cmd;
1209 else
1210 keymacro_add(el, px, &arrow[i].fun,
1211 arrow[i].type);
1212 }
1213 }
1214 }
1215 }
1216
1217 /* terminal_putc():
1218 * Add a character
1219 */
1220 private int
terminal_putc(int c)1221 terminal_putc(int c)
1222 {
1223 if (terminal_outfile == NULL)
1224 return -1;
1225 return fputc(c, terminal_outfile);
1226 }
1227
1228 private void
terminal_tputs(EditLine * el,const char * cap,int affcnt)1229 terminal_tputs(EditLine *el, const char *cap, int affcnt)
1230 {
1231 #ifdef _REENTRANT
1232 pthread_mutex_lock(&terminal_mutex);
1233 #endif
1234 terminal_outfile = el->el_outfile;
1235 (void)tputs(cap, affcnt, terminal_putc);
1236 #ifdef _REENTRANT
1237 pthread_mutex_unlock(&terminal_mutex);
1238 #endif
1239 }
1240
1241 /* terminal__putc():
1242 * Add a character
1243 */
1244 protected int
terminal__putc(EditLine * el,Int c)1245 terminal__putc(EditLine *el, Int c)
1246 {
1247 char buf[MB_LEN_MAX +1];
1248 ssize_t i;
1249 mbstate_t state;
1250
1251 memset(&state, 0, sizeof(mbstate_t));
1252 if (c == (Int)MB_FILL_CHAR)
1253 return 0;
1254 i = ct_encode_char(buf, (size_t)MB_CUR_MAX, c, &state);
1255 if (i <= 0)
1256 return (int)i;
1257 buf[i] = '\0';
1258 return fputs(buf, el->el_outfile);
1259 }
1260
1261 /* terminal__flush():
1262 * Flush output
1263 */
1264 protected void
terminal__flush(EditLine * el)1265 terminal__flush(EditLine *el)
1266 {
1267
1268 (void) fflush(el->el_outfile);
1269 }
1270
1271 /* terminal_writec():
1272 * Write the given character out, in a human readable form
1273 */
1274 protected int
terminal_writec(EditLine * el,Int c)1275 terminal_writec(EditLine *el, Int c)
1276 {
1277 Char visbuf[VISUAL_WIDTH_MAX +1];
1278 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c);
1279 if(vcnt == -1)
1280 return 1; /* Error due to insufficient space */
1281 else {
1282 visbuf[vcnt] = '\0';
1283 terminal_overwrite(el, visbuf, (size_t)vcnt);
1284 terminal__flush(el);
1285 return 0;
1286 }
1287 }
1288
1289
1290 /* terminal_telltc():
1291 * Print the current termcap characteristics
1292 */
1293 protected int
1294 /*ARGSUSED*/
terminal_telltc(EditLine * el,int argc,const Char ** argv)1295 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)),
1296 const Char **argv __attribute__((__unused__)))
1297 {
1298 const struct termcapstr *t;
1299 char **ts;
1300
1301 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1302 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1303 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1304 Val(T_co), Val(T_li));
1305 (void) fprintf(el->el_outfile,
1306 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1307 (void) fprintf(el->el_outfile,
1308 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1309 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1310 EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1311 if (EL_HAS_AUTO_MARGINS)
1312 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1313 EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1314
1315 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) {
1316 const char *ub;
1317 if (*ts && **ts) {
1318 ub = ct_encode_string(ct_visual_string(
1319 ct_decode_string(*ts, &el->el_scratch)),
1320 &el->el_scratch);
1321 } else {
1322 ub = "(empty)";
1323 }
1324 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1325 t->long_name, t->name, ub);
1326 }
1327 (void) fputc('\n', el->el_outfile);
1328 return 0;
1329 }
1330
1331
1332 /* terminal_settc():
1333 * Change the current terminal characteristics
1334 */
1335 protected int
1336 /*ARGSUSED*/
terminal_settc(EditLine * el,int argc,const Char ** argv)1337 terminal_settc(EditLine *el, int argc __attribute__((__unused__)),
1338 const Char **argv)
1339 {
1340 const struct termcapstr *ts;
1341 const struct termcapval *tv;
1342 char what[8], how[8];
1343
1344 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1345 return -1;
1346
1347 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what));
1348 what[sizeof(what) - 1] = '\0';
1349 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how));
1350 how[sizeof(how) - 1] = '\0';
1351
1352 /*
1353 * Do the strings first
1354 */
1355 for (ts = tstr; ts->name != NULL; ts++)
1356 if (strcmp(ts->name, what) == 0)
1357 break;
1358
1359 if (ts->name != NULL) {
1360 terminal_alloc(el, ts, how);
1361 terminal_setflags(el);
1362 return 0;
1363 }
1364 /*
1365 * Do the numeric ones second
1366 */
1367 for (tv = tval; tv->name != NULL; tv++)
1368 if (strcmp(tv->name, what) == 0)
1369 break;
1370
1371 if (tv->name != NULL)
1372 return -1;
1373
1374 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1375 tv == &tval[T_am] || tv == &tval[T_xn]) {
1376 if (strcmp(how, "yes") == 0)
1377 el->el_terminal.t_val[tv - tval] = 1;
1378 else if (strcmp(how, "no") == 0)
1379 el->el_terminal.t_val[tv - tval] = 0;
1380 else {
1381 (void) fprintf(el->el_errfile,
1382 "" FSTR ": Bad value `%s'.\n", argv[0], how);
1383 return -1;
1384 }
1385 terminal_setflags(el);
1386 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1)
1387 return -1;
1388 return 0;
1389 } else {
1390 long i;
1391 char *ep;
1392
1393 i = strtol(how, &ep, 10);
1394 if (*ep != '\0') {
1395 (void) fprintf(el->el_errfile,
1396 "" FSTR ": Bad value `%s'.\n", argv[0], how);
1397 return -1;
1398 }
1399 el->el_terminal.t_val[tv - tval] = (int) i;
1400 el->el_terminal.t_size.v = Val(T_co);
1401 el->el_terminal.t_size.h = Val(T_li);
1402 if (tv == &tval[T_co] || tv == &tval[T_li])
1403 if (terminal_change_size(el, Val(T_li), Val(T_co))
1404 == -1)
1405 return -1;
1406 return 0;
1407 }
1408 }
1409
1410
1411 /* terminal_gettc():
1412 * Get the current terminal characteristics
1413 */
1414 protected int
1415 /*ARGSUSED*/
terminal_gettc(EditLine * el,int argc,char ** argv)1416 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv)
1417 {
1418 const struct termcapstr *ts;
1419 const struct termcapval *tv;
1420 char *what;
1421 void *how;
1422
1423 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1424 return -1;
1425
1426 what = argv[1];
1427 how = argv[2];
1428
1429 /*
1430 * Do the strings first
1431 */
1432 for (ts = tstr; ts->name != NULL; ts++)
1433 if (strcmp(ts->name, what) == 0)
1434 break;
1435
1436 if (ts->name != NULL) {
1437 *(char **)how = el->el_terminal.t_str[ts - tstr];
1438 return 0;
1439 }
1440 /*
1441 * Do the numeric ones second
1442 */
1443 for (tv = tval; tv->name != NULL; tv++)
1444 if (strcmp(tv->name, what) == 0)
1445 break;
1446
1447 if (tv->name == NULL)
1448 return -1;
1449
1450 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1451 tv == &tval[T_am] || tv == &tval[T_xn]) {
1452 static char yes[] = "yes";
1453 static char no[] = "no";
1454 if (el->el_terminal.t_val[tv - tval])
1455 *(char **)how = yes;
1456 else
1457 *(char **)how = no;
1458 return 0;
1459 } else {
1460 *(int *)how = el->el_terminal.t_val[tv - tval];
1461 return 0;
1462 }
1463 }
1464
1465 /* terminal_echotc():
1466 * Print the termcap string out with variable substitution
1467 */
1468 protected int
1469 /*ARGSUSED*/
terminal_echotc(EditLine * el,int argc,const Char ** argv)1470 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)),
1471 const Char **argv)
1472 {
1473 char *cap, *scap;
1474 Char *ep;
1475 int arg_need, arg_cols, arg_rows;
1476 int verbose = 0, silent = 0;
1477 char *area;
1478 static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1479 const struct termcapstr *t;
1480 char buf[TC_BUFSIZE];
1481 long i;
1482
1483 area = buf;
1484
1485 if (argv == NULL || argv[1] == NULL)
1486 return -1;
1487 argv++;
1488
1489 if (argv[0][0] == '-') {
1490 switch (argv[0][1]) {
1491 case 'v':
1492 verbose = 1;
1493 break;
1494 case 's':
1495 silent = 1;
1496 break;
1497 default:
1498 /* stderror(ERR_NAME | ERR_TCUSAGE); */
1499 break;
1500 }
1501 argv++;
1502 }
1503 if (!*argv || *argv[0] == '\0')
1504 return 0;
1505 if (Strcmp(*argv, STR("tabs")) == 0) {
1506 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1507 return 0;
1508 } else if (Strcmp(*argv, STR("meta")) == 0) {
1509 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1510 return 0;
1511 } else if (Strcmp(*argv, STR("xn")) == 0) {
1512 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1513 "yes" : "no");
1514 return 0;
1515 } else if (Strcmp(*argv, STR("am")) == 0) {
1516 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1517 "yes" : "no");
1518 return 0;
1519 } else if (Strcmp(*argv, STR("baud")) == 0) {
1520 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
1521 return 0;
1522 } else if (Strcmp(*argv, STR("rows")) == 0 ||
1523 Strcmp(*argv, STR("lines")) == 0) {
1524 (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1525 return 0;
1526 } else if (Strcmp(*argv, STR("cols")) == 0) {
1527 (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1528 return 0;
1529 }
1530 /*
1531 * Try to use our local definition first
1532 */
1533 scap = NULL;
1534 for (t = tstr; t->name != NULL; t++)
1535 if (strcmp(t->name,
1536 ct_encode_string(*argv, &el->el_scratch)) == 0) {
1537 scap = el->el_terminal.t_str[t - tstr];
1538 break;
1539 }
1540 if (t->name == NULL) {
1541 /* XXX: some systems' tgetstr needs non const */
1542 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area);
1543 }
1544 if (!scap || scap[0] == '\0') {
1545 if (!silent)
1546 (void) fprintf(el->el_errfile,
1547 "echotc: Termcap parameter `" FSTR "' not found.\n",
1548 *argv);
1549 return -1;
1550 }
1551 /*
1552 * Count home many values we need for this capability.
1553 */
1554 for (cap = scap, arg_need = 0; *cap; cap++)
1555 if (*cap == '%')
1556 switch (*++cap) {
1557 case 'd':
1558 case '2':
1559 case '3':
1560 case '.':
1561 case '+':
1562 arg_need++;
1563 break;
1564 case '%':
1565 case '>':
1566 case 'i':
1567 case 'r':
1568 case 'n':
1569 case 'B':
1570 case 'D':
1571 break;
1572 default:
1573 /*
1574 * hpux has lot's of them...
1575 */
1576 if (verbose)
1577 (void) fprintf(el->el_errfile,
1578 "echotc: Warning: unknown termcap %% `%c'.\n",
1579 *cap);
1580 /* This is bad, but I won't complain */
1581 break;
1582 }
1583
1584 switch (arg_need) {
1585 case 0:
1586 argv++;
1587 if (*argv && *argv[0]) {
1588 if (!silent)
1589 (void) fprintf(el->el_errfile,
1590 "echotc: Warning: Extra argument `" FSTR "'.\n",
1591 *argv);
1592 return -1;
1593 }
1594 terminal_tputs(el, scap, 1);
1595 break;
1596 case 1:
1597 argv++;
1598 if (!*argv || *argv[0] == '\0') {
1599 if (!silent)
1600 (void) fprintf(el->el_errfile,
1601 "echotc: Warning: Missing argument.\n");
1602 return -1;
1603 }
1604 arg_cols = 0;
1605 i = Strtol(*argv, &ep, 10);
1606 if (*ep != '\0' || i < 0) {
1607 if (!silent)
1608 (void) fprintf(el->el_errfile,
1609 "echotc: Bad value `" FSTR "' for rows.\n",
1610 *argv);
1611 return -1;
1612 }
1613 arg_rows = (int) i;
1614 argv++;
1615 if (*argv && *argv[0]) {
1616 if (!silent)
1617 (void) fprintf(el->el_errfile,
1618 "echotc: Warning: Extra argument `" FSTR
1619 "'.\n", *argv);
1620 return -1;
1621 }
1622 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1);
1623 break;
1624 default:
1625 /* This is wrong, but I will ignore it... */
1626 if (verbose)
1627 (void) fprintf(el->el_errfile,
1628 "echotc: Warning: Too many required arguments (%d).\n",
1629 arg_need);
1630 /* FALLTHROUGH */
1631 case 2:
1632 argv++;
1633 if (!*argv || *argv[0] == '\0') {
1634 if (!silent)
1635 (void) fprintf(el->el_errfile,
1636 "echotc: Warning: Missing argument.\n");
1637 return -1;
1638 }
1639 i = Strtol(*argv, &ep, 10);
1640 if (*ep != '\0' || i < 0) {
1641 if (!silent)
1642 (void) fprintf(el->el_errfile,
1643 "echotc: Bad value `" FSTR "' for cols.\n",
1644 *argv);
1645 return -1;
1646 }
1647 arg_cols = (int) i;
1648 argv++;
1649 if (!*argv || *argv[0] == '\0') {
1650 if (!silent)
1651 (void) fprintf(el->el_errfile,
1652 "echotc: Warning: Missing argument.\n");
1653 return -1;
1654 }
1655 i = Strtol(*argv, &ep, 10);
1656 if (*ep != '\0' || i < 0) {
1657 if (!silent)
1658 (void) fprintf(el->el_errfile,
1659 "echotc: Bad value `" FSTR "' for rows.\n",
1660 *argv);
1661 return -1;
1662 }
1663 arg_rows = (int) i;
1664 if (*ep != '\0') {
1665 if (!silent)
1666 (void) fprintf(el->el_errfile,
1667 "echotc: Bad value `" FSTR "'.\n", *argv);
1668 return -1;
1669 }
1670 argv++;
1671 if (*argv && *argv[0]) {
1672 if (!silent)
1673 (void) fprintf(el->el_errfile,
1674 "echotc: Warning: Extra argument `" FSTR
1675 "'.\n", *argv);
1676 return -1;
1677 }
1678 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows);
1679 break;
1680 }
1681 return 0;
1682 }
1683