1 /* $NetBSD: terminal.c,v 1.14 2012/05/30 18:21:14 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 1.14 2012/05/30 18:21:14 christos Exp $");
41 #endif
42 #endif /* not lint && not SCCSID */
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
45
46 /*
47 * terminal.c: Editor/termcap-curses interface
48 * We have to declare a static variable here, since the
49 * termcap putchar routine does not take an argument!
50 */
51 #include <stdio.h>
52 #include <signal.h>
53 #include <string.h>
54 #include <stdlib.h>
55 #include <unistd.h>
56 #include <limits.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 #include <sys/types.h>
72 #include <sys/ioctl.h>
73
74 #ifdef _REENTRANT
75 #include <pthread.h>
76 #endif
77
78 #include "el.h"
79
80 /*
81 * IMPORTANT NOTE: these routines are allowed to look at the current screen
82 * and the current position assuming that it is correct. If this is not
83 * true, then the update will be WRONG! This is (should be) a valid
84 * assumption...
85 */
86
87 #define TC_BUFSIZE ((size_t)2048)
88
89 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \
90 el->el_terminal.t_str[a][0] != '\0')
91 #define Str(a) el->el_terminal.t_str[a]
92 #define Val(a) el->el_terminal.t_val[a]
93
94 private const struct termcapstr {
95 const char *name;
96 const char *long_name;
97 } tstr[] = {
98 #define T_al 0
99 { "al", "add new blank line" },
100 #define T_bl 1
101 { "bl", "audible bell" },
102 #define T_cd 2
103 { "cd", "clear to bottom" },
104 #define T_ce 3
105 { "ce", "clear to end of line" },
106 #define T_ch 4
107 { "ch", "cursor to horiz pos" },
108 #define T_cl 5
109 { "cl", "clear screen" },
110 #define T_dc 6
111 { "dc", "delete a character" },
112 #define T_dl 7
113 { "dl", "delete a line" },
114 #define T_dm 8
115 { "dm", "start delete mode" },
116 #define T_ed 9
117 { "ed", "end delete mode" },
118 #define T_ei 10
119 { "ei", "end insert mode" },
120 #define T_fs 11
121 { "fs", "cursor from status line" },
122 #define T_ho 12
123 { "ho", "home cursor" },
124 #define T_ic 13
125 { "ic", "insert character" },
126 #define T_im 14
127 { "im", "start insert mode" },
128 #define T_ip 15
129 { "ip", "insert padding" },
130 #define T_kd 16
131 { "kd", "sends cursor down" },
132 #define T_kl 17
133 { "kl", "sends cursor left" },
134 #define T_kr 18
135 { "kr", "sends cursor right" },
136 #define T_ku 19
137 { "ku", "sends cursor up" },
138 #define T_md 20
139 { "md", "begin bold" },
140 #define T_me 21
141 { "me", "end attributes" },
142 #define T_nd 22
143 { "nd", "non destructive space" },
144 #define T_se 23
145 { "se", "end standout" },
146 #define T_so 24
147 { "so", "begin standout" },
148 #define T_ts 25
149 { "ts", "cursor to status line" },
150 #define T_up 26
151 { "up", "cursor up one" },
152 #define T_us 27
153 { "us", "begin underline" },
154 #define T_ue 28
155 { "ue", "end underline" },
156 #define T_vb 29
157 { "vb", "visible bell" },
158 #define T_DC 30
159 { "DC", "delete multiple chars" },
160 #define T_DO 31
161 { "DO", "cursor down multiple" },
162 #define T_IC 32
163 { "IC", "insert multiple chars" },
164 #define T_LE 33
165 { "LE", "cursor left multiple" },
166 #define T_RI 34
167 { "RI", "cursor right multiple" },
168 #define T_UP 35
169 { "UP", "cursor up multiple" },
170 #define T_kh 36
171 { "kh", "send cursor home" },
172 #define T_at7 37
173 { "@7", "send cursor end" },
174 #define T_kD 38
175 { "kD", "send cursor delete" },
176 #define T_str 39
177 { NULL, NULL }
178 };
179
180 private const struct termcapval {
181 const char *name;
182 const char *long_name;
183 } tval[] = {
184 #define T_am 0
185 { "am", "has automatic margins" },
186 #define T_pt 1
187 { "pt", "has physical tabs" },
188 #define T_li 2
189 { "li", "Number of lines" },
190 #define T_co 3
191 { "co", "Number of columns" },
192 #define T_km 4
193 { "km", "Has meta key" },
194 #define T_xt 5
195 { "xt", "Tab chars destructive" },
196 #define T_xn 6
197 { "xn", "newline ignored at right margin" },
198 #define T_MT 7
199 { "MT", "Has meta key" }, /* XXX? */
200 #define T_val 8
201 { NULL, NULL, }
202 };
203 /* do two or more of the attributes use me */
204
205 private void terminal_setflags(EditLine *);
206 private int terminal_rebuffer_display(EditLine *);
207 private void terminal_free_display(EditLine *);
208 private int terminal_alloc_display(EditLine *);
209 private void terminal_alloc(EditLine *, const struct termcapstr *,
210 const char *);
211 private void terminal_init_arrow(EditLine *);
212 private void terminal_reset_arrow(EditLine *);
213 private int terminal_putc(int);
214 private void terminal_tputs(EditLine *, const char *, int);
215
216 #ifdef _REENTRANT
217 private pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER;
218 #endif
219 private FILE *terminal_outfile = NULL;
220
221
222 /* terminal_setflags():
223 * Set the terminal capability flags
224 */
225 private void
terminal_setflags(EditLine * el)226 terminal_setflags(EditLine *el)
227 {
228 EL_FLAGS = 0;
229 if (el->el_tty.t_tabs)
230 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
231
232 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
233 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
234 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
235 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
236 TERM_CAN_INSERT : 0;
237 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
238 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
239 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
240
241 if (GoodStr(T_me) && GoodStr(T_ue))
242 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
243 TERM_CAN_ME : 0;
244 else
245 EL_FLAGS &= ~TERM_CAN_ME;
246 if (GoodStr(T_me) && GoodStr(T_se))
247 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
248 TERM_CAN_ME : 0;
249
250
251 #ifdef DEBUG_SCREEN
252 if (!EL_CAN_UP) {
253 (void) fprintf(el->el_errfile,
254 "WARNING: Your terminal cannot move up.\n");
255 (void) fprintf(el->el_errfile,
256 "Editing may be odd for long lines.\n");
257 }
258 if (!EL_CAN_CEOL)
259 (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
260 if (!EL_CAN_DELETE)
261 (void) fprintf(el->el_errfile, "no delete char capability.\n");
262 if (!EL_CAN_INSERT)
263 (void) fprintf(el->el_errfile, "no insert char capability.\n");
264 #endif /* DEBUG_SCREEN */
265 }
266
267 /* terminal_init():
268 * Initialize the terminal stuff
269 */
270 protected int
terminal_init(EditLine * el)271 terminal_init(EditLine *el)
272 {
273
274 el->el_terminal.t_buf = el_malloc(TC_BUFSIZE *
275 sizeof(*el->el_terminal.t_buf));
276 if (el->el_terminal.t_buf == NULL)
277 return -1;
278 el->el_terminal.t_cap = el_malloc(TC_BUFSIZE *
279 sizeof(*el->el_terminal.t_cap));
280 if (el->el_terminal.t_cap == NULL)
281 return -1;
282 el->el_terminal.t_fkey = el_malloc(A_K_NKEYS *
283 sizeof(*el->el_terminal.t_fkey));
284 if (el->el_terminal.t_fkey == NULL)
285 return -1;
286 el->el_terminal.t_loc = 0;
287 el->el_terminal.t_str = el_malloc(T_str *
288 sizeof(*el->el_terminal.t_str));
289 if (el->el_terminal.t_str == NULL)
290 return -1;
291 (void) memset(el->el_terminal.t_str, 0, T_str *
292 sizeof(*el->el_terminal.t_str));
293 el->el_terminal.t_val = el_malloc(T_val *
294 sizeof(*el->el_terminal.t_val));
295 if (el->el_terminal.t_val == NULL)
296 return -1;
297 (void) memset(el->el_terminal.t_val, 0, T_val *
298 sizeof(*el->el_terminal.t_val));
299 (void) terminal_set(el, NULL);
300 terminal_init_arrow(el);
301 return 0;
302 }
303
304 /* terminal_end():
305 * Clean up the terminal stuff
306 */
307 protected void
terminal_end(EditLine * el)308 terminal_end(EditLine *el)
309 {
310
311 el_free(el->el_terminal.t_buf);
312 el->el_terminal.t_buf = NULL;
313 el_free(el->el_terminal.t_cap);
314 el->el_terminal.t_cap = NULL;
315 el->el_terminal.t_loc = 0;
316 el_free(el->el_terminal.t_str);
317 el->el_terminal.t_str = NULL;
318 el_free(el->el_terminal.t_val);
319 el->el_terminal.t_val = NULL;
320 el_free(el->el_terminal.t_fkey);
321 el->el_terminal.t_fkey = NULL;
322 terminal_free_display(el);
323 }
324
325
326 /* terminal_alloc():
327 * Maintain a string pool for termcap strings
328 */
329 private void
terminal_alloc(EditLine * el,const struct termcapstr * t,const char * cap)330 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
331 {
332 char termbuf[TC_BUFSIZE];
333 size_t tlen, clen;
334 char **tlist = el->el_terminal.t_str;
335 char **tmp, **str = &tlist[t - tstr];
336
337 (void) memset(termbuf, 0, sizeof(termbuf));
338 if (cap == NULL || *cap == '\0') {
339 *str = NULL;
340 return;
341 } else
342 clen = strlen(cap);
343
344 tlen = *str == NULL ? 0 : strlen(*str);
345
346 /*
347 * New string is shorter; no need to allocate space
348 */
349 if (clen <= tlen) {
350 if (*str)
351 (void) strcpy(*str, cap); /* XXX strcpy is safe */
352 return;
353 }
354 /*
355 * New string is longer; see if we have enough space to append
356 */
357 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) {
358 /* XXX strcpy is safe */
359 (void) strcpy(*str = &el->el_terminal.t_buf[
360 el->el_terminal.t_loc], cap);
361 el->el_terminal.t_loc += clen + 1; /* one for \0 */
362 return;
363 }
364 /*
365 * Compact our buffer; no need to check compaction, cause we know it
366 * fits...
367 */
368 tlen = 0;
369 for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
370 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
371 char *ptr;
372
373 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
374 continue;
375 termbuf[tlen++] = '\0';
376 }
377 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE);
378 el->el_terminal.t_loc = tlen;
379 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) {
380 (void) fprintf(el->el_errfile,
381 "Out of termcap string space.\n");
382 return;
383 }
384 /* XXX strcpy is safe */
385 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc],
386 cap);
387 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */
388 return;
389 }
390
391
392 /* terminal_rebuffer_display():
393 * Rebuffer the display after the screen changed size
394 */
395 private int
terminal_rebuffer_display(EditLine * el)396 terminal_rebuffer_display(EditLine *el)
397 {
398 coord_t *c = &el->el_terminal.t_size;
399
400 terminal_free_display(el);
401
402 c->h = Val(T_co);
403 c->v = Val(T_li);
404
405 if (terminal_alloc_display(el) == -1)
406 return -1;
407 return 0;
408 }
409
410
411 /* terminal_alloc_display():
412 * Allocate a new display.
413 */
414 private int
terminal_alloc_display(EditLine * el)415 terminal_alloc_display(EditLine *el)
416 {
417 int i;
418 Char **b;
419 coord_t *c = &el->el_terminal.t_size;
420
421 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
422 if (b == NULL)
423 return -1;
424 for (i = 0; i < c->v; i++) {
425 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
426 if (b[i] == NULL) {
427 while (--i >= 0)
428 el_free(b[i]);
429 el_free(b);
430 return -1;
431 }
432 }
433 b[c->v] = NULL;
434 el->el_display = b;
435
436 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
437 if (b == NULL)
438 return -1;
439 for (i = 0; i < c->v; i++) {
440 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
441 if (b[i] == NULL) {
442 while (--i >= 0)
443 el_free(b[i]);
444 el_free(b);
445 return -1;
446 }
447 }
448 b[c->v] = NULL;
449 el->el_vdisplay = b;
450 return 0;
451 }
452
453
454 /* terminal_free_display():
455 * Free the display buffers
456 */
457 private void
terminal_free_display(EditLine * el)458 terminal_free_display(EditLine *el)
459 {
460 Char **b;
461 Char **bufp;
462
463 b = el->el_display;
464 el->el_display = NULL;
465 if (b != NULL) {
466 for (bufp = b; *bufp != NULL; bufp++)
467 el_free(*bufp);
468 el_free(b);
469 }
470 b = el->el_vdisplay;
471 el->el_vdisplay = NULL;
472 if (b != NULL) {
473 for (bufp = b; *bufp != NULL; bufp++)
474 el_free(*bufp);
475 el_free(b);
476 }
477 }
478
479
480 /* terminal_move_to_line():
481 * move to line <where> (first line == 0)
482 * as efficiently as possible
483 */
484 protected void
terminal_move_to_line(EditLine * el,int where)485 terminal_move_to_line(EditLine *el, int where)
486 {
487 int del;
488
489 if (where == el->el_cursor.v)
490 return;
491
492 if (where > el->el_terminal.t_size.v) {
493 #ifdef DEBUG_SCREEN
494 (void) fprintf(el->el_errfile,
495 "terminal_move_to_line: where is ridiculous: %d\r\n",
496 where);
497 #endif /* DEBUG_SCREEN */
498 return;
499 }
500 if ((del = where - el->el_cursor.v) > 0) {
501 while (del > 0) {
502 if (EL_HAS_AUTO_MARGINS &&
503 el->el_display[el->el_cursor.v][0] != '\0') {
504 size_t h = (size_t)
505 (el->el_terminal.t_size.h - 1);
506 #ifdef WIDECHAR
507 for (; h > 0 &&
508 el->el_display[el->el_cursor.v][h] ==
509 MB_FILL_CHAR;
510 h--)
511 continue;
512 #endif
513 /* move without newline */
514 terminal_move_to_char(el, (int)h);
515 terminal_overwrite(el, &el->el_display
516 [el->el_cursor.v][el->el_cursor.h],
517 (size_t)(el->el_terminal.t_size.h -
518 el->el_cursor.h));
519 /* updates Cursor */
520 del--;
521 } else {
522 if ((del > 1) && GoodStr(T_DO)) {
523 terminal_tputs(el, tgoto(Str(T_DO), del,
524 del), del);
525 del = 0;
526 } else {
527 for (; del > 0; del--)
528 terminal__putc(el, '\n');
529 /* because the \n will become \r\n */
530 el->el_cursor.h = 0;
531 }
532 }
533 }
534 } else { /* del < 0 */
535 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
536 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del);
537 else {
538 if (GoodStr(T_up))
539 for (; del < 0; del++)
540 terminal_tputs(el, Str(T_up), 1);
541 }
542 }
543 el->el_cursor.v = where;/* now where is here */
544 }
545
546
547 /* terminal_move_to_char():
548 * Move to the character position specified
549 */
550 protected void
terminal_move_to_char(EditLine * el,int where)551 terminal_move_to_char(EditLine *el, int where)
552 {
553 int del, i;
554
555 mc_again:
556 if (where == el->el_cursor.h)
557 return;
558
559 if (where > el->el_terminal.t_size.h) {
560 #ifdef DEBUG_SCREEN
561 (void) fprintf(el->el_errfile,
562 "terminal_move_to_char: where is riduculous: %d\r\n",
563 where);
564 #endif /* DEBUG_SCREEN */
565 return;
566 }
567 if (!where) { /* if where is first column */
568 terminal__putc(el, '\r'); /* do a CR */
569 el->el_cursor.h = 0;
570 return;
571 }
572 del = where - el->el_cursor.h;
573
574 if ((del < -4 || del > 4) && GoodStr(T_ch))
575 /* go there directly */
576 terminal_tputs(el, tgoto(Str(T_ch), where, where), where);
577 else {
578 if (del > 0) { /* moving forward */
579 if ((del > 4) && GoodStr(T_RI))
580 terminal_tputs(el, tgoto(Str(T_RI), del, del),
581 del);
582 else {
583 /* if I can do tabs, use them */
584 if (EL_CAN_TAB) {
585 if ((el->el_cursor.h & 0370) !=
586 (where & ~0x7)
587 #ifdef WIDECHAR
588 && (el->el_display[
589 el->el_cursor.v][where & 0370] !=
590 MB_FILL_CHAR)
591 #endif
592 ) {
593 /* if not within tab stop */
594 for (i =
595 (el->el_cursor.h & 0370);
596 i < (where & ~0x7);
597 i += 8)
598 terminal__putc(el,
599 '\t');
600 /* then tab over */
601 el->el_cursor.h = where & ~0x7;
602 }
603 }
604 /*
605 * it's usually cheaper to just write the
606 * chars, so we do.
607 */
608 /*
609 * NOTE THAT terminal_overwrite() WILL CHANGE
610 * el->el_cursor.h!!!
611 */
612 terminal_overwrite(el, &el->el_display[
613 el->el_cursor.v][el->el_cursor.h],
614 (size_t)(where - el->el_cursor.h));
615
616 }
617 } else { /* del < 0 := moving backward */
618 if ((-del > 4) && GoodStr(T_LE))
619 terminal_tputs(el, tgoto(Str(T_LE), -del, -del),
620 -del);
621 else { /* can't go directly there */
622 /*
623 * if the "cost" is greater than the "cost"
624 * from col 0
625 */
626 if (EL_CAN_TAB ?
627 ((unsigned int)-del >
628 (((unsigned int) where >> 3) +
629 (where & 07)))
630 : (-del > where)) {
631 terminal__putc(el, '\r');/* do a CR */
632 el->el_cursor.h = 0;
633 goto mc_again; /* and try again */
634 }
635 for (i = 0; i < -del; i++)
636 terminal__putc(el, '\b');
637 }
638 }
639 }
640 el->el_cursor.h = where; /* now where is here */
641 }
642
643
644 /* terminal_overwrite():
645 * Overstrike num characters
646 * Assumes MB_FILL_CHARs are present to keep the column count correct
647 */
648 protected void
terminal_overwrite(EditLine * el,const Char * cp,size_t n)649 terminal_overwrite(EditLine *el, const Char *cp, size_t n)
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 /* terminal__putc() ignores any MB_FILL_CHARs */
664 terminal__putc(el, *cp++);
665 el->el_cursor.h++;
666 } while (--n);
667
668 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */
669 if (EL_HAS_AUTO_MARGINS) { /* yes */
670 el->el_cursor.h = 0;
671 el->el_cursor.v++;
672 if (EL_HAS_MAGIC_MARGINS) {
673 /* force the wrap to avoid the "magic"
674 * situation */
675 Char c;
676 if ((c = el->el_display[el->el_cursor.v]
677 [el->el_cursor.h]) != '\0') {
678 terminal_overwrite(el, &c, (size_t)1);
679 #ifdef WIDECHAR
680 while (el->el_display[el->el_cursor.v]
681 [el->el_cursor.h] == MB_FILL_CHAR)
682 el->el_cursor.h++;
683 #endif
684 } else {
685 terminal__putc(el, ' ');
686 el->el_cursor.h = 1;
687 }
688 }
689 } else /* no wrap, but cursor stays on screen */
690 el->el_cursor.h = el->el_terminal.t_size.h - 1;
691 }
692 }
693
694
695 /* terminal_deletechars():
696 * Delete num characters
697 */
698 protected void
terminal_deletechars(EditLine * el,int num)699 terminal_deletechars(EditLine *el, int num)
700 {
701 if (num <= 0)
702 return;
703
704 if (!EL_CAN_DELETE) {
705 #ifdef DEBUG_EDIT
706 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
707 #endif /* DEBUG_EDIT */
708 return;
709 }
710 if (num > el->el_terminal.t_size.h) {
711 #ifdef DEBUG_SCREEN
712 (void) fprintf(el->el_errfile,
713 "terminal_deletechars: num is riduculous: %d\r\n", num);
714 #endif /* DEBUG_SCREEN */
715 return;
716 }
717 if (GoodStr(T_DC)) /* if I have multiple delete */
718 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
719 * expen. */
720 terminal_tputs(el, tgoto(Str(T_DC), num, num), num);
721 return;
722 }
723 if (GoodStr(T_dm)) /* if I have delete mode */
724 terminal_tputs(el, Str(T_dm), 1);
725
726 if (GoodStr(T_dc)) /* else do one at a time */
727 while (num--)
728 terminal_tputs(el, Str(T_dc), 1);
729
730 if (GoodStr(T_ed)) /* if I have delete mode */
731 terminal_tputs(el, Str(T_ed), 1);
732 }
733
734
735 /* terminal_insertwrite():
736 * Puts terminal in insert character mode or inserts num
737 * characters in the line
738 * Assumes MB_FILL_CHARs are present to keep column count correct
739 */
740 protected void
terminal_insertwrite(EditLine * el,Char * cp,int num)741 terminal_insertwrite(EditLine *el, Char *cp, int num)
742 {
743 if (num <= 0)
744 return;
745 if (!EL_CAN_INSERT) {
746 #ifdef DEBUG_EDIT
747 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
748 #endif /* DEBUG_EDIT */
749 return;
750 }
751 if (num > el->el_terminal.t_size.h) {
752 #ifdef DEBUG_SCREEN
753 (void) fprintf(el->el_errfile,
754 "StartInsert: num is riduculous: %d\r\n", num);
755 #endif /* DEBUG_SCREEN */
756 return;
757 }
758 if (GoodStr(T_IC)) /* if I have multiple insert */
759 if ((num > 1) || !GoodStr(T_ic)) {
760 /* if ic would be more expensive */
761 terminal_tputs(el, tgoto(Str(T_IC), num, num), num);
762 terminal_overwrite(el, cp, (size_t)num);
763 /* this updates el_cursor.h */
764 return;
765 }
766 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
767 terminal_tputs(el, Str(T_im), 1);
768
769 el->el_cursor.h += num;
770 do
771 terminal__putc(el, *cp++);
772 while (--num);
773
774 if (GoodStr(T_ip)) /* have to make num chars insert */
775 terminal_tputs(el, Str(T_ip), 1);
776
777 terminal_tputs(el, Str(T_ei), 1);
778 return;
779 }
780 do {
781 if (GoodStr(T_ic)) /* have to make num chars insert */
782 terminal_tputs(el, Str(T_ic), 1);
783
784 terminal__putc(el, *cp++);
785
786 el->el_cursor.h++;
787
788 if (GoodStr(T_ip)) /* have to make num chars insert */
789 terminal_tputs(el, Str(T_ip), 1);
790 /* pad the inserted char */
791
792 } while (--num);
793 }
794
795
796 /* terminal_clear_EOL():
797 * clear to end of line. There are num characters to clear
798 */
799 protected void
terminal_clear_EOL(EditLine * el,int num)800 terminal_clear_EOL(EditLine *el, int num)
801 {
802 int i;
803
804 if (EL_CAN_CEOL && GoodStr(T_ce))
805 terminal_tputs(el, Str(T_ce), 1);
806 else {
807 for (i = 0; i < num; i++)
808 terminal__putc(el, ' ');
809 el->el_cursor.h += num; /* have written num spaces */
810 }
811 }
812
813
814 /* terminal_clear_screen():
815 * Clear the screen
816 */
817 protected void
terminal_clear_screen(EditLine * el)818 terminal_clear_screen(EditLine *el)
819 { /* clear the whole screen and home */
820
821 if (GoodStr(T_cl))
822 /* send the clear screen code */
823 terminal_tputs(el, Str(T_cl), Val(T_li));
824 else if (GoodStr(T_ho) && GoodStr(T_cd)) {
825 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */
826 /* clear to bottom of screen */
827 terminal_tputs(el, Str(T_cd), Val(T_li));
828 } else {
829 terminal__putc(el, '\r');
830 terminal__putc(el, '\n');
831 }
832 }
833
834
835 /* terminal_beep():
836 * Beep the way the terminal wants us
837 */
838 protected void
terminal_beep(EditLine * el)839 terminal_beep(EditLine *el)
840 {
841 if (GoodStr(T_bl))
842 /* what termcap says we should use */
843 terminal_tputs(el, Str(T_bl), 1);
844 else
845 terminal__putc(el, '\007'); /* an ASCII bell; ^G */
846 }
847
848
849 protected void
terminal_get(EditLine * el,const char ** term)850 terminal_get(EditLine *el, const char **term)
851 {
852 *term = el->el_terminal.t_name;
853 }
854
855
856 /* terminal_set():
857 * Read in the terminal capabilities from the requested terminal
858 */
859 protected int
terminal_set(EditLine * el,const char * term)860 terminal_set(EditLine *el, const char *term)
861 {
862 int i;
863 char buf[TC_BUFSIZE];
864 char *area;
865 const struct termcapstr *t;
866 sigset_t oset, nset;
867 int lins, cols;
868
869 (void) sigemptyset(&nset);
870 (void) sigaddset(&nset, SIGWINCH);
871 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
872
873 area = buf;
874
875
876 if (term == NULL)
877 term = getenv("TERM");
878
879 if (!term || !term[0])
880 term = "dumb";
881
882 if (strcmp(term, "emacs") == 0)
883 el->el_flags |= EDIT_DISABLED;
884
885 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE);
886
887 i = tgetent(el->el_terminal.t_cap, term);
888
889 if (i <= 0) {
890 if (i == -1)
891 (void) fprintf(el->el_errfile,
892 "Cannot read termcap database;\n");
893 else if (i == 0)
894 (void) fprintf(el->el_errfile,
895 "No entry for terminal type \"%s\";\n", term);
896 (void) fprintf(el->el_errfile,
897 "using dumb terminal settings.\n");
898 Val(T_co) = 80; /* do a dumb terminal */
899 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
900 Val(T_xt) = Val(T_MT);
901 for (t = tstr; t->name != NULL; t++)
902 terminal_alloc(el, t, NULL);
903 } else {
904 /* auto/magic margins */
905 Val(T_am) = tgetflag("am");
906 Val(T_xn) = tgetflag("xn");
907 /* Can we tab */
908 Val(T_pt) = tgetflag("pt");
909 Val(T_xt) = tgetflag("xt");
910 /* do we have a meta? */
911 Val(T_km) = tgetflag("km");
912 Val(T_MT) = tgetflag("MT");
913 /* Get the size */
914 Val(T_co) = tgetnum("co");
915 Val(T_li) = tgetnum("li");
916 for (t = tstr; t->name != NULL; t++) {
917 /* XXX: some systems' tgetstr needs non const */
918 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name),
919 &area));
920 }
921 }
922
923 if (Val(T_co) < 2)
924 Val(T_co) = 80; /* just in case */
925 if (Val(T_li) < 1)
926 Val(T_li) = 24;
927
928 el->el_terminal.t_size.v = Val(T_co);
929 el->el_terminal.t_size.h = Val(T_li);
930
931 terminal_setflags(el);
932
933 /* get the correct window size */
934 (void) terminal_get_size(el, &lins, &cols);
935 if (terminal_change_size(el, lins, cols) == -1)
936 return -1;
937 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
938 terminal_bind_arrow(el);
939 el->el_terminal.t_name = term;
940 return i <= 0 ? -1 : 0;
941 }
942
943
944 /* terminal_get_size():
945 * Return the new window size in lines and cols, and
946 * true if the size was changed.
947 */
948 protected int
terminal_get_size(EditLine * el,int * lins,int * cols)949 terminal_get_size(EditLine *el, int *lins, int *cols)
950 {
951
952 *cols = Val(T_co);
953 *lins = Val(T_li);
954
955 #ifdef TIOCGWINSZ
956 {
957 struct winsize ws;
958 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) {
959 if (ws.ws_col)
960 *cols = ws.ws_col;
961 if (ws.ws_row)
962 *lins = ws.ws_row;
963 }
964 }
965 #endif
966 #ifdef TIOCGSIZE
967 {
968 struct ttysize ts;
969 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) {
970 if (ts.ts_cols)
971 *cols = ts.ts_cols;
972 if (ts.ts_lines)
973 *lins = ts.ts_lines;
974 }
975 }
976 #endif
977 return Val(T_co) != *cols || Val(T_li) != *lins;
978 }
979
980
981 /* terminal_change_size():
982 * Change the size of the terminal
983 */
984 protected int
terminal_change_size(EditLine * el,int lins,int cols)985 terminal_change_size(EditLine *el, int lins, int cols)
986 {
987 /*
988 * Just in case
989 */
990 Val(T_co) = (cols < 2) ? 80 : cols;
991 Val(T_li) = (lins < 1) ? 24 : lins;
992
993 /* re-make display buffers */
994 if (terminal_rebuffer_display(el) == -1)
995 return -1;
996 re_clear_display(el);
997 return 0;
998 }
999
1000
1001 /* terminal_init_arrow():
1002 * Initialize the arrow key bindings from termcap
1003 */
1004 private void
terminal_init_arrow(EditLine * el)1005 terminal_init_arrow(EditLine *el)
1006 {
1007 funckey_t *arrow = el->el_terminal.t_fkey;
1008
1009 arrow[A_K_DN].name = STR("down");
1010 arrow[A_K_DN].key = T_kd;
1011 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
1012 arrow[A_K_DN].type = XK_CMD;
1013
1014 arrow[A_K_UP].name = STR("up");
1015 arrow[A_K_UP].key = T_ku;
1016 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
1017 arrow[A_K_UP].type = XK_CMD;
1018
1019 arrow[A_K_LT].name = STR("left");
1020 arrow[A_K_LT].key = T_kl;
1021 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1022 arrow[A_K_LT].type = XK_CMD;
1023
1024 arrow[A_K_RT].name = STR("right");
1025 arrow[A_K_RT].key = T_kr;
1026 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1027 arrow[A_K_RT].type = XK_CMD;
1028
1029 arrow[A_K_HO].name = STR("home");
1030 arrow[A_K_HO].key = T_kh;
1031 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1032 arrow[A_K_HO].type = XK_CMD;
1033
1034 arrow[A_K_EN].name = STR("end");
1035 arrow[A_K_EN].key = T_at7;
1036 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1037 arrow[A_K_EN].type = XK_CMD;
1038
1039 arrow[A_K_DE].name = STR("delete");
1040 arrow[A_K_DE].key = T_kD;
1041 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR;
1042 arrow[A_K_DE].type = XK_CMD;
1043 }
1044
1045
1046 /* terminal_reset_arrow():
1047 * Reset arrow key bindings
1048 */
1049 private void
terminal_reset_arrow(EditLine * el)1050 terminal_reset_arrow(EditLine *el)
1051 {
1052 funckey_t *arrow = el->el_terminal.t_fkey;
1053 static const Char strA[] = {033, '[', 'A', '\0'};
1054 static const Char strB[] = {033, '[', 'B', '\0'};
1055 static const Char strC[] = {033, '[', 'C', '\0'};
1056 static const Char strD[] = {033, '[', 'D', '\0'};
1057 static const Char strH[] = {033, '[', 'H', '\0'};
1058 static const Char strF[] = {033, '[', 'F', '\0'};
1059 static const Char stOA[] = {033, 'O', 'A', '\0'};
1060 static const Char stOB[] = {033, 'O', 'B', '\0'};
1061 static const Char stOC[] = {033, 'O', 'C', '\0'};
1062 static const Char stOD[] = {033, 'O', 'D', '\0'};
1063 static const Char stOH[] = {033, 'O', 'H', '\0'};
1064 static const Char stOF[] = {033, 'O', 'F', '\0'};
1065
1066 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1067 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1068 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1069 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1070 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1071 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1072 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1073 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1074 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1075 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1076 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1077 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1078
1079 if (el->el_map.type != MAP_VI)
1080 return;
1081 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1082 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1083 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1084 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1085 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1086 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1087 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1088 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1089 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1090 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1091 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1092 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1093 }
1094
1095
1096 /* terminal_set_arrow():
1097 * Set an arrow key binding
1098 */
1099 protected int
terminal_set_arrow(EditLine * el,const Char * name,keymacro_value_t * fun,int type)1100 terminal_set_arrow(EditLine *el, const Char *name, keymacro_value_t *fun,
1101 int type)
1102 {
1103 funckey_t *arrow = el->el_terminal.t_fkey;
1104 int i;
1105
1106 for (i = 0; i < A_K_NKEYS; i++)
1107 if (Strcmp(name, arrow[i].name) == 0) {
1108 arrow[i].fun = *fun;
1109 arrow[i].type = type;
1110 return 0;
1111 }
1112 return -1;
1113 }
1114
1115
1116 /* terminal_clear_arrow():
1117 * Clear an arrow key binding
1118 */
1119 protected int
terminal_clear_arrow(EditLine * el,const Char * name)1120 terminal_clear_arrow(EditLine *el, const Char *name)
1121 {
1122 funckey_t *arrow = el->el_terminal.t_fkey;
1123 int i;
1124
1125 for (i = 0; i < A_K_NKEYS; i++)
1126 if (Strcmp(name, arrow[i].name) == 0) {
1127 arrow[i].type = XK_NOD;
1128 return 0;
1129 }
1130 return -1;
1131 }
1132
1133
1134 /* terminal_print_arrow():
1135 * Print the arrow key bindings
1136 */
1137 protected void
terminal_print_arrow(EditLine * el,const Char * name)1138 terminal_print_arrow(EditLine *el, const Char *name)
1139 {
1140 int i;
1141 funckey_t *arrow = el->el_terminal.t_fkey;
1142
1143 for (i = 0; i < A_K_NKEYS; i++)
1144 if (*name == '\0' || Strcmp(name, arrow[i].name) == 0)
1145 if (arrow[i].type != XK_NOD)
1146 keymacro_kprint(el, arrow[i].name,
1147 &arrow[i].fun, arrow[i].type);
1148 }
1149
1150
1151 /* terminal_bind_arrow():
1152 * Bind the arrow keys
1153 */
1154 protected void
terminal_bind_arrow(EditLine * el)1155 terminal_bind_arrow(EditLine *el)
1156 {
1157 el_action_t *map;
1158 const el_action_t *dmap;
1159 int i, j;
1160 char *p;
1161 funckey_t *arrow = el->el_terminal.t_fkey;
1162
1163 /* Check if the components needed are initialized */
1164 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL)
1165 return;
1166
1167 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1168 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1169
1170 terminal_reset_arrow(el);
1171
1172 for (i = 0; i < A_K_NKEYS; i++) {
1173 Char wt_str[VISUAL_WIDTH_MAX];
1174 Char *px;
1175 size_t n;
1176
1177 p = el->el_terminal.t_str[arrow[i].key];
1178 if (!p || !*p)
1179 continue;
1180 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n)
1181 wt_str[n] = p[n];
1182 while (n < VISUAL_WIDTH_MAX)
1183 wt_str[n++] = '\0';
1184 px = wt_str;
1185 j = (unsigned char) *p;
1186 /*
1187 * Assign the arrow keys only if:
1188 *
1189 * 1. They are multi-character arrow keys and the user
1190 * has not re-assigned the leading character, or
1191 * has re-assigned the leading character to be
1192 * ED_SEQUENCE_LEAD_IN
1193 * 2. They are single arrow keys pointing to an
1194 * unassigned key.
1195 */
1196 if (arrow[i].type == XK_NOD)
1197 keymacro_clear(el, map, px);
1198 else {
1199 if (p[1] && (dmap[j] == map[j] ||
1200 map[j] == ED_SEQUENCE_LEAD_IN)) {
1201 keymacro_add(el, px, &arrow[i].fun,
1202 arrow[i].type);
1203 map[j] = ED_SEQUENCE_LEAD_IN;
1204 } else if (map[j] == ED_UNASSIGNED) {
1205 keymacro_clear(el, map, px);
1206 if (arrow[i].type == XK_CMD)
1207 map[j] = arrow[i].fun.cmd;
1208 else
1209 keymacro_add(el, px, &arrow[i].fun,
1210 arrow[i].type);
1211 }
1212 }
1213 }
1214 }
1215
1216 /* terminal_putc():
1217 * Add a character
1218 */
1219 private int
terminal_putc(int c)1220 terminal_putc(int c)
1221 {
1222 if (terminal_outfile == NULL)
1223 return -1;
1224 return fputc(c, terminal_outfile);
1225 }
1226
1227 private void
terminal_tputs(EditLine * el,const char * cap,int affcnt)1228 terminal_tputs(EditLine *el, const char *cap, int affcnt)
1229 {
1230 #ifdef _REENTRANT
1231 pthread_mutex_lock(&terminal_mutex);
1232 #endif
1233 terminal_outfile = el->el_outfile;
1234 (void)tputs(cap, affcnt, terminal_putc);
1235 #ifdef _REENTRANT
1236 pthread_mutex_unlock(&terminal_mutex);
1237 #endif
1238 }
1239
1240 /* terminal__putc():
1241 * Add a character
1242 */
1243 protected int
terminal__putc(EditLine * el,Int c)1244 terminal__putc(EditLine *el, Int c)
1245 {
1246 char buf[MB_LEN_MAX +1];
1247 ssize_t i;
1248 if (c == (Int)MB_FILL_CHAR)
1249 return 0;
1250 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c);
1251 if (i <= 0)
1252 return (int)i;
1253 buf[i] = '\0';
1254 return fputs(buf, el->el_outfile);
1255 }
1256
1257 /* terminal__flush():
1258 * Flush output
1259 */
1260 protected void
terminal__flush(EditLine * el)1261 terminal__flush(EditLine *el)
1262 {
1263
1264 (void) fflush(el->el_outfile);
1265 }
1266
1267 /* terminal_writec():
1268 * Write the given character out, in a human readable form
1269 */
1270 protected void
terminal_writec(EditLine * el,Int c)1271 terminal_writec(EditLine *el, Int c)
1272 {
1273 Char visbuf[VISUAL_WIDTH_MAX +1];
1274 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c);
1275 if (vcnt < 0)
1276 vcnt = 0;
1277 visbuf[vcnt] = '\0';
1278 terminal_overwrite(el, visbuf, (size_t)vcnt);
1279 terminal__flush(el);
1280 }
1281
1282
1283 /* terminal_telltc():
1284 * Print the current termcap characteristics
1285 */
1286 protected int
1287 /*ARGSUSED*/
terminal_telltc(EditLine * el,int argc,const Char ** argv)1288 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)),
1289 const Char **argv __attribute__((__unused__)))
1290 {
1291 const struct termcapstr *t;
1292 char **ts;
1293
1294 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1295 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1296 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1297 Val(T_co), Val(T_li));
1298 (void) fprintf(el->el_outfile,
1299 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1300 (void) fprintf(el->el_outfile,
1301 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1302 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1303 EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1304 if (EL_HAS_AUTO_MARGINS)
1305 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1306 EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1307
1308 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) {
1309 const char *ub;
1310 if (*ts && **ts) {
1311 ub = ct_encode_string(ct_visual_string(
1312 ct_decode_string(*ts, &el->el_scratch)),
1313 &el->el_scratch);
1314 } else {
1315 ub = "(empty)";
1316 }
1317 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1318 t->long_name, t->name, ub);
1319 }
1320 (void) fputc('\n', el->el_outfile);
1321 return 0;
1322 }
1323
1324
1325 /* terminal_settc():
1326 * Change the current terminal characteristics
1327 */
1328 protected int
1329 /*ARGSUSED*/
terminal_settc(EditLine * el,int argc,const Char ** argv)1330 terminal_settc(EditLine *el, int argc __attribute__((__unused__)),
1331 const Char **argv)
1332 {
1333 const struct termcapstr *ts;
1334 const struct termcapval *tv;
1335 char what[8], how[8];
1336
1337 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1338 return -1;
1339
1340 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what));
1341 what[sizeof(what) - 1] = '\0';
1342 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how));
1343 how[sizeof(how) - 1] = '\0';
1344
1345 /*
1346 * Do the strings first
1347 */
1348 for (ts = tstr; ts->name != NULL; ts++)
1349 if (strcmp(ts->name, what) == 0)
1350 break;
1351
1352 if (ts->name != NULL) {
1353 terminal_alloc(el, ts, how);
1354 terminal_setflags(el);
1355 return 0;
1356 }
1357 /*
1358 * Do the numeric ones second
1359 */
1360 for (tv = tval; tv->name != NULL; tv++)
1361 if (strcmp(tv->name, what) == 0)
1362 break;
1363
1364 if (tv->name != NULL)
1365 return -1;
1366
1367 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1368 tv == &tval[T_am] || tv == &tval[T_xn]) {
1369 if (strcmp(how, "yes") == 0)
1370 el->el_terminal.t_val[tv - tval] = 1;
1371 else if (strcmp(how, "no") == 0)
1372 el->el_terminal.t_val[tv - tval] = 0;
1373 else {
1374 (void) fprintf(el->el_errfile,
1375 "" FSTR ": Bad value `%s'.\n", argv[0], how);
1376 return -1;
1377 }
1378 terminal_setflags(el);
1379 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1)
1380 return -1;
1381 return 0;
1382 } else {
1383 long i;
1384 char *ep;
1385
1386 i = strtol(how, &ep, 10);
1387 if (*ep != '\0') {
1388 (void) fprintf(el->el_errfile,
1389 "" FSTR ": Bad value `%s'.\n", argv[0], how);
1390 return -1;
1391 }
1392 el->el_terminal.t_val[tv - tval] = (int) i;
1393 el->el_terminal.t_size.v = Val(T_co);
1394 el->el_terminal.t_size.h = Val(T_li);
1395 if (tv == &tval[T_co] || tv == &tval[T_li])
1396 if (terminal_change_size(el, Val(T_li), Val(T_co))
1397 == -1)
1398 return -1;
1399 return 0;
1400 }
1401 }
1402
1403
1404 /* terminal_gettc():
1405 * Get the current terminal characteristics
1406 */
1407 protected int
1408 /*ARGSUSED*/
terminal_gettc(EditLine * el,int argc,char ** argv)1409 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv)
1410 {
1411 const struct termcapstr *ts;
1412 const struct termcapval *tv;
1413 char *what;
1414 void *how;
1415
1416 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1417 return -1;
1418
1419 what = argv[1];
1420 how = argv[2];
1421
1422 /*
1423 * Do the strings first
1424 */
1425 for (ts = tstr; ts->name != NULL; ts++)
1426 if (strcmp(ts->name, what) == 0)
1427 break;
1428
1429 if (ts->name != NULL) {
1430 *(char **)how = el->el_terminal.t_str[ts - tstr];
1431 return 0;
1432 }
1433 /*
1434 * Do the numeric ones second
1435 */
1436 for (tv = tval; tv->name != NULL; tv++)
1437 if (strcmp(tv->name, what) == 0)
1438 break;
1439
1440 if (tv->name == NULL)
1441 return -1;
1442
1443 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1444 tv == &tval[T_am] || tv == &tval[T_xn]) {
1445 static char yes[] = "yes";
1446 static char no[] = "no";
1447 if (el->el_terminal.t_val[tv - tval])
1448 *(char **)how = yes;
1449 else
1450 *(char **)how = no;
1451 return 0;
1452 } else {
1453 *(int *)how = el->el_terminal.t_val[tv - tval];
1454 return 0;
1455 }
1456 }
1457
1458 /* terminal_echotc():
1459 * Print the termcap string out with variable substitution
1460 */
1461 protected int
1462 /*ARGSUSED*/
terminal_echotc(EditLine * el,int argc,const Char ** argv)1463 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)),
1464 const Char **argv)
1465 {
1466 char *cap, *scap;
1467 Char *ep;
1468 int arg_need, arg_cols, arg_rows;
1469 int verbose = 0, silent = 0;
1470 char *area;
1471 static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1472 const struct termcapstr *t;
1473 char buf[TC_BUFSIZE];
1474 long i;
1475
1476 area = buf;
1477
1478 if (argv == NULL || argv[1] == NULL)
1479 return -1;
1480 argv++;
1481
1482 if (argv[0][0] == '-') {
1483 switch (argv[0][1]) {
1484 case 'v':
1485 verbose = 1;
1486 break;
1487 case 's':
1488 silent = 1;
1489 break;
1490 default:
1491 /* stderror(ERR_NAME | ERR_TCUSAGE); */
1492 break;
1493 }
1494 argv++;
1495 }
1496 if (!*argv || *argv[0] == '\0')
1497 return 0;
1498 if (Strcmp(*argv, STR("tabs")) == 0) {
1499 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1500 return 0;
1501 } else if (Strcmp(*argv, STR("meta")) == 0) {
1502 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1503 return 0;
1504 } else if (Strcmp(*argv, STR("xn")) == 0) {
1505 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1506 "yes" : "no");
1507 return 0;
1508 } else if (Strcmp(*argv, STR("am")) == 0) {
1509 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1510 "yes" : "no");
1511 return 0;
1512 } else if (Strcmp(*argv, STR("baud")) == 0) {
1513 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
1514 return 0;
1515 } else if (Strcmp(*argv, STR("rows")) == 0 ||
1516 Strcmp(*argv, STR("lines")) == 0) {
1517 (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1518 return 0;
1519 } else if (Strcmp(*argv, STR("cols")) == 0) {
1520 (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1521 return 0;
1522 }
1523 /*
1524 * Try to use our local definition first
1525 */
1526 scap = NULL;
1527 for (t = tstr; t->name != NULL; t++)
1528 if (strcmp(t->name,
1529 ct_encode_string(*argv, &el->el_scratch)) == 0) {
1530 scap = el->el_terminal.t_str[t - tstr];
1531 break;
1532 }
1533 if (t->name == NULL) {
1534 /* XXX: some systems' tgetstr needs non const */
1535 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area);
1536 }
1537 if (!scap || scap[0] == '\0') {
1538 if (!silent)
1539 (void) fprintf(el->el_errfile,
1540 "echotc: Termcap parameter `" FSTR "' not found.\n",
1541 *argv);
1542 return -1;
1543 }
1544 /*
1545 * Count home many values we need for this capability.
1546 */
1547 for (cap = scap, arg_need = 0; *cap; cap++)
1548 if (*cap == '%')
1549 switch (*++cap) {
1550 case 'd':
1551 case '2':
1552 case '3':
1553 case '.':
1554 case '+':
1555 arg_need++;
1556 break;
1557 case '%':
1558 case '>':
1559 case 'i':
1560 case 'r':
1561 case 'n':
1562 case 'B':
1563 case 'D':
1564 break;
1565 default:
1566 /*
1567 * hpux has lot's of them...
1568 */
1569 if (verbose)
1570 (void) fprintf(el->el_errfile,
1571 "echotc: Warning: unknown termcap %% `%c'.\n",
1572 *cap);
1573 /* This is bad, but I won't complain */
1574 break;
1575 }
1576
1577 switch (arg_need) {
1578 case 0:
1579 argv++;
1580 if (*argv && *argv[0]) {
1581 if (!silent)
1582 (void) fprintf(el->el_errfile,
1583 "echotc: Warning: Extra argument `" FSTR "'.\n",
1584 *argv);
1585 return -1;
1586 }
1587 terminal_tputs(el, scap, 1);
1588 break;
1589 case 1:
1590 argv++;
1591 if (!*argv || *argv[0] == '\0') {
1592 if (!silent)
1593 (void) fprintf(el->el_errfile,
1594 "echotc: Warning: Missing argument.\n");
1595 return -1;
1596 }
1597 arg_cols = 0;
1598 i = Strtol(*argv, &ep, 10);
1599 if (*ep != '\0' || i < 0) {
1600 if (!silent)
1601 (void) fprintf(el->el_errfile,
1602 "echotc: Bad value `" FSTR "' for rows.\n",
1603 *argv);
1604 return -1;
1605 }
1606 arg_rows = (int) i;
1607 argv++;
1608 if (*argv && *argv[0]) {
1609 if (!silent)
1610 (void) fprintf(el->el_errfile,
1611 "echotc: Warning: Extra argument `" FSTR
1612 "'.\n", *argv);
1613 return -1;
1614 }
1615 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1);
1616 break;
1617 default:
1618 /* This is wrong, but I will ignore it... */
1619 if (verbose)
1620 (void) fprintf(el->el_errfile,
1621 "echotc: Warning: Too many required arguments (%d).\n",
1622 arg_need);
1623 /* FALLTHROUGH */
1624 case 2:
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 = Strtol(*argv, &ep, 10);
1633 if (*ep != '\0' || i < 0) {
1634 if (!silent)
1635 (void) fprintf(el->el_errfile,
1636 "echotc: Bad value `" FSTR "' for cols.\n",
1637 *argv);
1638 return -1;
1639 }
1640 arg_cols = (int) i;
1641 argv++;
1642 if (!*argv || *argv[0] == '\0') {
1643 if (!silent)
1644 (void) fprintf(el->el_errfile,
1645 "echotc: Warning: Missing argument.\n");
1646 return -1;
1647 }
1648 i = Strtol(*argv, &ep, 10);
1649 if (*ep != '\0' || i < 0) {
1650 if (!silent)
1651 (void) fprintf(el->el_errfile,
1652 "echotc: Bad value `" FSTR "' for rows.\n",
1653 *argv);
1654 return -1;
1655 }
1656 arg_rows = (int) i;
1657 if (*ep != '\0') {
1658 if (!silent)
1659 (void) fprintf(el->el_errfile,
1660 "echotc: Bad value `" FSTR "'.\n", *argv);
1661 return -1;
1662 }
1663 argv++;
1664 if (*argv && *argv[0]) {
1665 if (!silent)
1666 (void) fprintf(el->el_errfile,
1667 "echotc: Warning: Extra argument `" FSTR
1668 "'.\n", *argv);
1669 return -1;
1670 }
1671 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows);
1672 break;
1673 }
1674 return 0;
1675 }
1676