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
44 /*
45 * terminal.c: Editor/termcap-curses interface
46 * We have to declare a static variable here, since the
47 * termcap putchar routine does not take an argument!
48 */
49 #include <stdio.h>
50 #include <signal.h>
51 #include <string.h>
52 #include <stdlib.h>
53 #include <unistd.h>
54 #include <limits.h>
55 #ifdef HAVE_TERMCAP_H
56 #include <termcap.h>
57 #endif
58 #ifdef HAVE_CURSES_H
59 #include <curses.h>
60 #elif HAVE_NCURSES_H
61 #include <ncurses.h>
62 #endif
63
64 /* Solaris's term.h does horrid things. */
65 #if defined(HAVE_TERM_H) && !defined(__sun) && !defined(HAVE_TERMCAP_H)
66 #include <term.h>
67 #endif
68
69 #include <sys/types.h>
70 #include <sys/ioctl.h>
71
72 #ifdef _REENTRANT
73 #include <pthread.h>
74 #endif
75
76 #include "el.h"
77
78 /*
79 * IMPORTANT NOTE: these routines are allowed to look at the current screen
80 * and the current position assuming that it is correct. If this is not
81 * true, then the update will be WRONG! This is (should be) a valid
82 * assumption...
83 */
84
85 #define TC_BUFSIZE ((size_t)2048)
86
87 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \
88 el->el_terminal.t_str[a][0] != '\0')
89 #define Str(a) el->el_terminal.t_str[a]
90 #define Val(a) el->el_terminal.t_val[a]
91
92 private const struct termcapstr {
93 const char *name;
94 const char *long_name;
95 } tstr[] = {
96 #define T_al 0
97 { "al", "add new blank line" },
98 #define T_bl 1
99 { "bl", "audible bell" },
100 #define T_cd 2
101 { "cd", "clear to bottom" },
102 #define T_ce 3
103 { "ce", "clear to end of line" },
104 #define T_ch 4
105 { "ch", "cursor to horiz pos" },
106 #define T_cl 5
107 { "cl", "clear screen" },
108 #define T_dc 6
109 { "dc", "delete a character" },
110 #define T_dl 7
111 { "dl", "delete a line" },
112 #define T_dm 8
113 { "dm", "start delete mode" },
114 #define T_ed 9
115 { "ed", "end delete mode" },
116 #define T_ei 10
117 { "ei", "end insert mode" },
118 #define T_fs 11
119 { "fs", "cursor from status line" },
120 #define T_ho 12
121 { "ho", "home cursor" },
122 #define T_ic 13
123 { "ic", "insert character" },
124 #define T_im 14
125 { "im", "start insert mode" },
126 #define T_ip 15
127 { "ip", "insert padding" },
128 #define T_kd 16
129 { "kd", "sends cursor down" },
130 #define T_kl 17
131 { "kl", "sends cursor left" },
132 #define T_kr 18
133 { "kr", "sends cursor right" },
134 #define T_ku 19
135 { "ku", "sends cursor up" },
136 #define T_md 20
137 { "md", "begin bold" },
138 #define T_me 21
139 { "me", "end attributes" },
140 #define T_nd 22
141 { "nd", "non destructive space" },
142 #define T_se 23
143 { "se", "end standout" },
144 #define T_so 24
145 { "so", "begin standout" },
146 #define T_ts 25
147 { "ts", "cursor to status line" },
148 #define T_up 26
149 { "up", "cursor up one" },
150 #define T_us 27
151 { "us", "begin underline" },
152 #define T_ue 28
153 { "ue", "end underline" },
154 #define T_vb 29
155 { "vb", "visible bell" },
156 #define T_DC 30
157 { "DC", "delete multiple chars" },
158 #define T_DO 31
159 { "DO", "cursor down multiple" },
160 #define T_IC 32
161 { "IC", "insert multiple chars" },
162 #define T_LE 33
163 { "LE", "cursor left multiple" },
164 #define T_RI 34
165 { "RI", "cursor right multiple" },
166 #define T_UP 35
167 { "UP", "cursor up multiple" },
168 #define T_kh 36
169 { "kh", "send cursor home" },
170 #define T_at7 37
171 { "@7", "send cursor end" },
172 #define T_kD 38
173 { "kD", "send cursor delete" },
174 #define T_str 39
175 { NULL, NULL }
176 };
177
178 private const struct termcapval {
179 const char *name;
180 const char *long_name;
181 } tval[] = {
182 #define T_am 0
183 { "am", "has automatic margins" },
184 #define T_pt 1
185 { "pt", "has physical tabs" },
186 #define T_li 2
187 { "li", "Number of lines" },
188 #define T_co 3
189 { "co", "Number of columns" },
190 #define T_km 4
191 { "km", "Has meta key" },
192 #define T_xt 5
193 { "xt", "Tab chars destructive" },
194 #define T_xn 6
195 { "xn", "newline ignored at right margin" },
196 #define T_MT 7
197 { "MT", "Has meta key" }, /* XXX? */
198 #define T_val 8
199 { NULL, NULL, }
200 };
201 /* do two or more of the attributes use me */
202
203 private void terminal_setflags(EditLine *);
204 private int terminal_rebuffer_display(EditLine *);
205 private void terminal_free_display(EditLine *);
206 private int terminal_alloc_display(EditLine *);
207 private void terminal_alloc(EditLine *, const struct termcapstr *,
208 const char *);
209 private void terminal_init_arrow(EditLine *);
210 private void terminal_reset_arrow(EditLine *);
211 private int terminal_putc(int);
212 private void terminal_tputs(EditLine *, const char *, int);
213
214 #ifdef _REENTRANT
215 private pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER;
216 #endif
217 private FILE *terminal_outfile = NULL;
218
219
220 /* terminal_setflags():
221 * Set the terminal capability flags
222 */
223 private void
terminal_setflags(EditLine * el)224 terminal_setflags(EditLine *el)
225 {
226 EL_FLAGS = 0;
227 if (el->el_tty.t_tabs)
228 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
229
230 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
231 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
232 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
233 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
234 TERM_CAN_INSERT : 0;
235 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
236 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
237 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
238
239 if (GoodStr(T_me) && GoodStr(T_ue))
240 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
241 TERM_CAN_ME : 0;
242 else
243 EL_FLAGS &= ~TERM_CAN_ME;
244 if (GoodStr(T_me) && GoodStr(T_se))
245 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
246 TERM_CAN_ME : 0;
247
248
249 #ifdef DEBUG_SCREEN
250 if (!EL_CAN_UP) {
251 (void) fprintf(el->el_errfile,
252 "WARNING: Your terminal cannot move up.\n");
253 (void) fprintf(el->el_errfile,
254 "Editing may be odd for long lines.\n");
255 }
256 if (!EL_CAN_CEOL)
257 (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
258 if (!EL_CAN_DELETE)
259 (void) fprintf(el->el_errfile, "no delete char capability.\n");
260 if (!EL_CAN_INSERT)
261 (void) fprintf(el->el_errfile, "no insert char capability.\n");
262 #endif /* DEBUG_SCREEN */
263 }
264
265 /* terminal_init():
266 * Initialize the terminal stuff
267 */
268 protected int
terminal_init(EditLine * el)269 terminal_init(EditLine *el)
270 {
271
272 el->el_terminal.t_buf = el_malloc(TC_BUFSIZE *
273 sizeof(*el->el_terminal.t_buf));
274 if (el->el_terminal.t_buf == NULL)
275 return -1;
276 el->el_terminal.t_cap = el_malloc(TC_BUFSIZE *
277 sizeof(*el->el_terminal.t_cap));
278 if (el->el_terminal.t_cap == NULL)
279 return -1;
280 el->el_terminal.t_fkey = el_malloc(A_K_NKEYS *
281 sizeof(*el->el_terminal.t_fkey));
282 if (el->el_terminal.t_fkey == NULL)
283 return -1;
284 el->el_terminal.t_loc = 0;
285 el->el_terminal.t_str = el_malloc(T_str *
286 sizeof(*el->el_terminal.t_str));
287 if (el->el_terminal.t_str == NULL)
288 return -1;
289 (void) memset(el->el_terminal.t_str, 0, T_str *
290 sizeof(*el->el_terminal.t_str));
291 el->el_terminal.t_val = el_malloc(T_val *
292 sizeof(*el->el_terminal.t_val));
293 if (el->el_terminal.t_val == NULL)
294 return -1;
295 (void) memset(el->el_terminal.t_val, 0, T_val *
296 sizeof(*el->el_terminal.t_val));
297 (void) terminal_set(el, NULL);
298 terminal_init_arrow(el);
299 return 0;
300 }
301
302 /* terminal_end():
303 * Clean up the terminal stuff
304 */
305 protected void
terminal_end(EditLine * el)306 terminal_end(EditLine *el)
307 {
308
309 el_free(el->el_terminal.t_buf);
310 el->el_terminal.t_buf = NULL;
311 el_free(el->el_terminal.t_cap);
312 el->el_terminal.t_cap = NULL;
313 el->el_terminal.t_loc = 0;
314 el_free(el->el_terminal.t_str);
315 el->el_terminal.t_str = NULL;
316 el_free(el->el_terminal.t_val);
317 el->el_terminal.t_val = NULL;
318 el_free(el->el_terminal.t_fkey);
319 el->el_terminal.t_fkey = NULL;
320 terminal_free_display(el);
321 }
322
323
324 /* terminal_alloc():
325 * Maintain a string pool for termcap strings
326 */
327 private void
terminal_alloc(EditLine * el,const struct termcapstr * t,const char * cap)328 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
329 {
330 char termbuf[TC_BUFSIZE];
331 size_t tlen, clen;
332 char **tlist = el->el_terminal.t_str;
333 char **tmp, **str = &tlist[t - tstr];
334
335 (void) memset(termbuf, 0, sizeof(termbuf));
336 if (cap == NULL || *cap == '\0') {
337 *str = NULL;
338 return;
339 } else
340 clen = strlen(cap);
341
342 tlen = *str == NULL ? 0 : strlen(*str);
343
344 /*
345 * New string is shorter; no need to allocate space
346 */
347 if (clen <= tlen) {
348 if (*str)
349 (void) strcpy(*str, cap); /* XXX strcpy is safe */
350 return;
351 }
352 /*
353 * New string is longer; see if we have enough space to append
354 */
355 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) {
356 /* XXX strcpy is safe */
357 (void) strcpy(*str = &el->el_terminal.t_buf[
358 el->el_terminal.t_loc], cap);
359 el->el_terminal.t_loc += clen + 1; /* one for \0 */
360 return;
361 }
362 /*
363 * Compact our buffer; no need to check compaction, cause we know it
364 * fits...
365 */
366 tlen = 0;
367 for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
368 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
369 char *ptr;
370
371 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
372 continue;
373 termbuf[tlen++] = '\0';
374 }
375 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE);
376 el->el_terminal.t_loc = tlen;
377 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) {
378 (void) fprintf(el->el_errfile,
379 "Out of termcap string space.\n");
380 return;
381 }
382 /* XXX strcpy is safe */
383 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc],
384 cap);
385 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */
386 return;
387 }
388
389
390 /* terminal_rebuffer_display():
391 * Rebuffer the display after the screen changed size
392 */
393 private int
terminal_rebuffer_display(EditLine * el)394 terminal_rebuffer_display(EditLine *el)
395 {
396 coord_t *c = &el->el_terminal.t_size;
397
398 terminal_free_display(el);
399
400 c->h = Val(T_co);
401 c->v = Val(T_li);
402
403 if (terminal_alloc_display(el) == -1)
404 return -1;
405 return 0;
406 }
407
408
409 /* terminal_alloc_display():
410 * Allocate a new display.
411 */
412 private int
terminal_alloc_display(EditLine * el)413 terminal_alloc_display(EditLine *el)
414 {
415 int i;
416 Char **b;
417 coord_t *c = &el->el_terminal.t_size;
418
419 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
420 if (b == NULL)
421 return -1;
422 for (i = 0; i < c->v; i++) {
423 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
424 if (b[i] == NULL) {
425 while (--i >= 0)
426 el_free(b[i]);
427 el_free(b);
428 return -1;
429 }
430 }
431 b[c->v] = NULL;
432 el->el_display = b;
433
434 b = el_malloc(sizeof(*b) * (size_t)(c->v + 1));
435 if (b == NULL)
436 return -1;
437 for (i = 0; i < c->v; i++) {
438 b[i] = el_malloc(sizeof(**b) * (size_t)(c->h + 1));
439 if (b[i] == NULL) {
440 while (--i >= 0)
441 el_free(b[i]);
442 el_free(b);
443 return -1;
444 }
445 }
446 b[c->v] = NULL;
447 el->el_vdisplay = b;
448 return 0;
449 }
450
451
452 /* terminal_free_display():
453 * Free the display buffers
454 */
455 private void
terminal_free_display(EditLine * el)456 terminal_free_display(EditLine *el)
457 {
458 Char **b;
459 Char **bufp;
460
461 b = el->el_display;
462 el->el_display = NULL;
463 if (b != NULL) {
464 for (bufp = b; *bufp != NULL; bufp++)
465 el_free(*bufp);
466 el_free(b);
467 }
468 b = el->el_vdisplay;
469 el->el_vdisplay = NULL;
470 if (b != NULL) {
471 for (bufp = b; *bufp != NULL; bufp++)
472 el_free(*bufp);
473 el_free(b);
474 }
475 }
476
477
478 /* terminal_move_to_line():
479 * move to line <where> (first line == 0)
480 * as efficiently as possible
481 */
482 protected void
terminal_move_to_line(EditLine * el,int where)483 terminal_move_to_line(EditLine *el, int where)
484 {
485 int del;
486
487 if (where == el->el_cursor.v)
488 return;
489
490 if (where > el->el_terminal.t_size.v) {
491 #ifdef DEBUG_SCREEN
492 (void) fprintf(el->el_errfile,
493 "terminal_move_to_line: where is ridiculous: %d\r\n",
494 where);
495 #endif /* DEBUG_SCREEN */
496 return;
497 }
498 if ((del = where - el->el_cursor.v) > 0) {
499 while (del > 0) {
500 if (EL_HAS_AUTO_MARGINS &&
501 el->el_display[el->el_cursor.v][0] != '\0') {
502 size_t h = (size_t)
503 (el->el_terminal.t_size.h - 1);
504 #ifdef WIDECHAR
505 for (; h > 0 &&
506 el->el_display[el->el_cursor.v][h] ==
507 MB_FILL_CHAR;
508 h--)
509 continue;
510 #endif
511 /* move without newline */
512 terminal_move_to_char(el, (int)h);
513 terminal_overwrite(el, &el->el_display
514 [el->el_cursor.v][el->el_cursor.h],
515 (size_t)(el->el_terminal.t_size.h -
516 el->el_cursor.h));
517 /* updates Cursor */
518 del--;
519 } else {
520 if ((del > 1) && GoodStr(T_DO)) {
521 terminal_tputs(el, tgoto(Str(T_DO), del,
522 del), del);
523 del = 0;
524 } else {
525 for (; del > 0; del--)
526 terminal__putc(el, '\n');
527 /* because the \n will become \r\n */
528 el->el_cursor.h = 0;
529 }
530 }
531 }
532 } else { /* del < 0 */
533 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
534 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del);
535 else {
536 if (GoodStr(T_up))
537 for (; del < 0; del++)
538 terminal_tputs(el, Str(T_up), 1);
539 }
540 }
541 el->el_cursor.v = where;/* now where is here */
542 }
543
544
545 /* terminal_move_to_char():
546 * Move to the character position specified
547 */
548 protected void
terminal_move_to_char(EditLine * el,int where)549 terminal_move_to_char(EditLine *el, int where)
550 {
551 int del, i;
552
553 mc_again:
554 if (where == el->el_cursor.h)
555 return;
556
557 if (where > el->el_terminal.t_size.h) {
558 #ifdef DEBUG_SCREEN
559 (void) fprintf(el->el_errfile,
560 "terminal_move_to_char: where is riduculous: %d\r\n",
561 where);
562 #endif /* DEBUG_SCREEN */
563 return;
564 }
565 if (!where) { /* if where is first column */
566 terminal__putc(el, '\r'); /* do a CR */
567 el->el_cursor.h = 0;
568 return;
569 }
570 del = where - el->el_cursor.h;
571
572 if ((del < -4 || del > 4) && GoodStr(T_ch))
573 /* go there directly */
574 terminal_tputs(el, tgoto(Str(T_ch), where, where), where);
575 else {
576 if (del > 0) { /* moving forward */
577 if ((del > 4) && GoodStr(T_RI))
578 terminal_tputs(el, tgoto(Str(T_RI), del, del),
579 del);
580 else {
581 /* if I can do tabs, use them */
582 if (EL_CAN_TAB) {
583 if ((el->el_cursor.h & 0370) !=
584 (where & ~0x7)
585 #ifdef WIDECHAR
586 && (el->el_display[
587 el->el_cursor.v][where & 0370] !=
588 MB_FILL_CHAR)
589 #endif
590 ) {
591 /* if not within tab stop */
592 for (i =
593 (el->el_cursor.h & 0370);
594 i < (where & ~0x7);
595 i += 8)
596 terminal__putc(el,
597 '\t');
598 /* then tab over */
599 el->el_cursor.h = where & ~0x7;
600 }
601 }
602 /*
603 * it's usually cheaper to just write the
604 * chars, so we do.
605 */
606 /*
607 * NOTE THAT terminal_overwrite() WILL CHANGE
608 * el->el_cursor.h!!!
609 */
610 terminal_overwrite(el, &el->el_display[
611 el->el_cursor.v][el->el_cursor.h],
612 (size_t)(where - el->el_cursor.h));
613
614 }
615 } else { /* del < 0 := moving backward */
616 if ((-del > 4) && GoodStr(T_LE))
617 terminal_tputs(el, tgoto(Str(T_LE), -del, -del),
618 -del);
619 else { /* can't go directly there */
620 /*
621 * if the "cost" is greater than the "cost"
622 * from col 0
623 */
624 if (EL_CAN_TAB ?
625 ((unsigned int)-del >
626 (((unsigned int) where >> 3) +
627 (where & 07)))
628 : (-del > where)) {
629 terminal__putc(el, '\r');/* do a CR */
630 el->el_cursor.h = 0;
631 goto mc_again; /* and try again */
632 }
633 for (i = 0; i < -del; i++)
634 terminal__putc(el, '\b');
635 }
636 }
637 }
638 el->el_cursor.h = where; /* now where is here */
639 }
640
641
642 /* terminal_overwrite():
643 * Overstrike num characters
644 * Assumes MB_FILL_CHARs are present to keep the column count correct
645 */
646 protected void
terminal_overwrite(EditLine * el,const Char * cp,size_t n)647 terminal_overwrite(EditLine *el, const Char *cp, size_t n)
648 {
649 if (n == 0)
650 return;
651
652 if (n > (size_t)el->el_terminal.t_size.h) {
653 #ifdef DEBUG_SCREEN
654 (void) fprintf(el->el_errfile,
655 "terminal_overwrite: n is riduculous: %d\r\n", n);
656 #endif /* DEBUG_SCREEN */
657 return;
658 }
659
660 do {
661 /* terminal__putc() ignores any MB_FILL_CHARs */
662 terminal__putc(el, *cp++);
663 el->el_cursor.h++;
664 } while (--n);
665
666 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */
667 if (EL_HAS_AUTO_MARGINS) { /* yes */
668 el->el_cursor.h = 0;
669 el->el_cursor.v++;
670 if (EL_HAS_MAGIC_MARGINS) {
671 /* force the wrap to avoid the "magic"
672 * situation */
673 Char c;
674 if ((c = el->el_display[el->el_cursor.v]
675 [el->el_cursor.h]) != '\0') {
676 terminal_overwrite(el, &c, (size_t)1);
677 #ifdef WIDECHAR
678 while (el->el_display[el->el_cursor.v]
679 [el->el_cursor.h] == MB_FILL_CHAR)
680 el->el_cursor.h++;
681 #endif
682 } else {
683 terminal__putc(el, ' ');
684 el->el_cursor.h = 1;
685 }
686 }
687 } else /* no wrap, but cursor stays on screen */
688 el->el_cursor.h = el->el_terminal.t_size.h - 1;
689 }
690 }
691
692
693 /* terminal_deletechars():
694 * Delete num characters
695 */
696 protected void
terminal_deletechars(EditLine * el,int num)697 terminal_deletechars(EditLine *el, int num)
698 {
699 if (num <= 0)
700 return;
701
702 if (!EL_CAN_DELETE) {
703 #ifdef DEBUG_EDIT
704 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
705 #endif /* DEBUG_EDIT */
706 return;
707 }
708 if (num > el->el_terminal.t_size.h) {
709 #ifdef DEBUG_SCREEN
710 (void) fprintf(el->el_errfile,
711 "terminal_deletechars: num is riduculous: %d\r\n", num);
712 #endif /* DEBUG_SCREEN */
713 return;
714 }
715 if (GoodStr(T_DC)) /* if I have multiple delete */
716 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
717 * expen. */
718 terminal_tputs(el, tgoto(Str(T_DC), num, num), num);
719 return;
720 }
721 if (GoodStr(T_dm)) /* if I have delete mode */
722 terminal_tputs(el, Str(T_dm), 1);
723
724 if (GoodStr(T_dc)) /* else do one at a time */
725 while (num--)
726 terminal_tputs(el, Str(T_dc), 1);
727
728 if (GoodStr(T_ed)) /* if I have delete mode */
729 terminal_tputs(el, Str(T_ed), 1);
730 }
731
732
733 /* terminal_insertwrite():
734 * Puts terminal in insert character mode or inserts num
735 * characters in the line
736 * Assumes MB_FILL_CHARs are present to keep column count correct
737 */
738 protected void
terminal_insertwrite(EditLine * el,Char * cp,int num)739 terminal_insertwrite(EditLine *el, Char *cp, int num)
740 {
741 if (num <= 0)
742 return;
743 if (!EL_CAN_INSERT) {
744 #ifdef DEBUG_EDIT
745 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
746 #endif /* DEBUG_EDIT */
747 return;
748 }
749 if (num > el->el_terminal.t_size.h) {
750 #ifdef DEBUG_SCREEN
751 (void) fprintf(el->el_errfile,
752 "StartInsert: num is riduculous: %d\r\n", num);
753 #endif /* DEBUG_SCREEN */
754 return;
755 }
756 if (GoodStr(T_IC)) /* if I have multiple insert */
757 if ((num > 1) || !GoodStr(T_ic)) {
758 /* if ic would be more expensive */
759 terminal_tputs(el, tgoto(Str(T_IC), num, num), num);
760 terminal_overwrite(el, cp, (size_t)num);
761 /* this updates el_cursor.h */
762 return;
763 }
764 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
765 terminal_tputs(el, Str(T_im), 1);
766
767 el->el_cursor.h += num;
768 do
769 terminal__putc(el, *cp++);
770 while (--num);
771
772 if (GoodStr(T_ip)) /* have to make num chars insert */
773 terminal_tputs(el, Str(T_ip), 1);
774
775 terminal_tputs(el, Str(T_ei), 1);
776 return;
777 }
778 do {
779 if (GoodStr(T_ic)) /* have to make num chars insert */
780 terminal_tputs(el, Str(T_ic), 1);
781
782 terminal__putc(el, *cp++);
783
784 el->el_cursor.h++;
785
786 if (GoodStr(T_ip)) /* have to make num chars insert */
787 terminal_tputs(el, Str(T_ip), 1);
788 /* pad the inserted char */
789
790 } while (--num);
791 }
792
793
794 /* terminal_clear_EOL():
795 * clear to end of line. There are num characters to clear
796 */
797 protected void
terminal_clear_EOL(EditLine * el,int num)798 terminal_clear_EOL(EditLine *el, int num)
799 {
800 int i;
801
802 if (EL_CAN_CEOL && GoodStr(T_ce))
803 terminal_tputs(el, Str(T_ce), 1);
804 else {
805 for (i = 0; i < num; i++)
806 terminal__putc(el, ' ');
807 el->el_cursor.h += num; /* have written num spaces */
808 }
809 }
810
811
812 /* terminal_clear_screen():
813 * Clear the screen
814 */
815 protected void
terminal_clear_screen(EditLine * el)816 terminal_clear_screen(EditLine *el)
817 { /* clear the whole screen and home */
818
819 if (GoodStr(T_cl))
820 /* send the clear screen code */
821 terminal_tputs(el, Str(T_cl), Val(T_li));
822 else if (GoodStr(T_ho) && GoodStr(T_cd)) {
823 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */
824 /* clear to bottom of screen */
825 terminal_tputs(el, Str(T_cd), Val(T_li));
826 } else {
827 terminal__putc(el, '\r');
828 terminal__putc(el, '\n');
829 }
830 }
831
832
833 /* terminal_beep():
834 * Beep the way the terminal wants us
835 */
836 protected void
terminal_beep(EditLine * el)837 terminal_beep(EditLine *el)
838 {
839 if (GoodStr(T_bl))
840 /* what termcap says we should use */
841 terminal_tputs(el, Str(T_bl), 1);
842 else
843 terminal__putc(el, '\007'); /* an ASCII bell; ^G */
844 }
845
846
847 protected void
terminal_get(EditLine * el,const char ** term)848 terminal_get(EditLine *el, const char **term)
849 {
850 *term = el->el_terminal.t_name;
851 }
852
853
854 /* terminal_set():
855 * Read in the terminal capabilities from the requested terminal
856 */
857 protected int
terminal_set(EditLine * el,const char * term)858 terminal_set(EditLine *el, const char *term)
859 {
860 int i;
861 char buf[TC_BUFSIZE];
862 char *area;
863 const struct termcapstr *t;
864 sigset_t oset, nset;
865 int lins, cols;
866
867 (void) sigemptyset(&nset);
868 (void) sigaddset(&nset, SIGWINCH);
869 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
870
871 area = buf;
872
873
874 if (term == NULL)
875 term = getenv("TERM");
876
877 if (!term || !term[0])
878 term = "dumb";
879
880 if (strcmp(term, "emacs") == 0)
881 el->el_flags |= EDIT_DISABLED;
882
883 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE);
884
885 i = tgetent(el->el_terminal.t_cap, term);
886
887 if (i <= 0) {
888 if (i == -1)
889 (void) fprintf(el->el_errfile,
890 "Cannot read termcap database;\n");
891 else if (i == 0)
892 (void) fprintf(el->el_errfile,
893 "No entry for terminal type \"%s\";\n", term);
894 (void) fprintf(el->el_errfile,
895 "using dumb terminal settings.\n");
896 Val(T_co) = 80; /* do a dumb terminal */
897 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
898 Val(T_xt) = Val(T_MT);
899 for (t = tstr; t->name != NULL; t++)
900 terminal_alloc(el, t, NULL);
901 } else {
902 /* auto/magic margins */
903 Val(T_am) = tgetflag("am");
904 Val(T_xn) = tgetflag("xn");
905 /* Can we tab */
906 Val(T_pt) = tgetflag("pt");
907 Val(T_xt) = tgetflag("xt");
908 /* do we have a meta? */
909 Val(T_km) = tgetflag("km");
910 Val(T_MT) = tgetflag("MT");
911 /* Get the size */
912 Val(T_co) = tgetnum("co");
913 Val(T_li) = tgetnum("li");
914 for (t = tstr; t->name != NULL; t++) {
915 /* XXX: some systems' tgetstr needs non const */
916 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name),
917 &area));
918 }
919 }
920
921 if (Val(T_co) < 2)
922 Val(T_co) = 80; /* just in case */
923 if (Val(T_li) < 1)
924 Val(T_li) = 24;
925
926 el->el_terminal.t_size.v = Val(T_co);
927 el->el_terminal.t_size.h = Val(T_li);
928
929 terminal_setflags(el);
930
931 /* get the correct window size */
932 (void) terminal_get_size(el, &lins, &cols);
933 if (terminal_change_size(el, lins, cols) == -1)
934 return -1;
935 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
936 terminal_bind_arrow(el);
937 el->el_terminal.t_name = term;
938 return i <= 0 ? -1 : 0;
939 }
940
941
942 /* terminal_get_size():
943 * Return the new window size in lines and cols, and
944 * true if the size was changed.
945 */
946 protected int
terminal_get_size(EditLine * el,int * lins,int * cols)947 terminal_get_size(EditLine *el, int *lins, int *cols)
948 {
949
950 *cols = Val(T_co);
951 *lins = Val(T_li);
952
953 #ifdef TIOCGWINSZ
954 {
955 struct winsize ws;
956 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) {
957 if (ws.ws_col)
958 *cols = ws.ws_col;
959 if (ws.ws_row)
960 *lins = ws.ws_row;
961 }
962 }
963 #endif
964 #ifdef TIOCGSIZE
965 {
966 struct ttysize ts;
967 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) {
968 if (ts.ts_cols)
969 *cols = ts.ts_cols;
970 if (ts.ts_lines)
971 *lins = ts.ts_lines;
972 }
973 }
974 #endif
975 return Val(T_co) != *cols || Val(T_li) != *lins;
976 }
977
978
979 /* terminal_change_size():
980 * Change the size of the terminal
981 */
982 protected int
terminal_change_size(EditLine * el,int lins,int cols)983 terminal_change_size(EditLine *el, int lins, int cols)
984 {
985 /*
986 * Just in case
987 */
988 Val(T_co) = (cols < 2) ? 80 : cols;
989 Val(T_li) = (lins < 1) ? 24 : lins;
990
991 /* re-make display buffers */
992 if (terminal_rebuffer_display(el) == -1)
993 return -1;
994 re_clear_display(el);
995 return 0;
996 }
997
998
999 /* terminal_init_arrow():
1000 * Initialize the arrow key bindings from termcap
1001 */
1002 private void
terminal_init_arrow(EditLine * el)1003 terminal_init_arrow(EditLine *el)
1004 {
1005 funckey_t *arrow = el->el_terminal.t_fkey;
1006
1007 arrow[A_K_DN].name = STR("down");
1008 arrow[A_K_DN].key = T_kd;
1009 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
1010 arrow[A_K_DN].type = XK_CMD;
1011
1012 arrow[A_K_UP].name = STR("up");
1013 arrow[A_K_UP].key = T_ku;
1014 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
1015 arrow[A_K_UP].type = XK_CMD;
1016
1017 arrow[A_K_LT].name = STR("left");
1018 arrow[A_K_LT].key = T_kl;
1019 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1020 arrow[A_K_LT].type = XK_CMD;
1021
1022 arrow[A_K_RT].name = STR("right");
1023 arrow[A_K_RT].key = T_kr;
1024 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1025 arrow[A_K_RT].type = XK_CMD;
1026
1027 arrow[A_K_HO].name = STR("home");
1028 arrow[A_K_HO].key = T_kh;
1029 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1030 arrow[A_K_HO].type = XK_CMD;
1031
1032 arrow[A_K_EN].name = STR("end");
1033 arrow[A_K_EN].key = T_at7;
1034 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1035 arrow[A_K_EN].type = XK_CMD;
1036
1037 arrow[A_K_DE].name = STR("delete");
1038 arrow[A_K_DE].key = T_kD;
1039 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR;
1040 arrow[A_K_DE].type = XK_CMD;
1041 }
1042
1043
1044 /* terminal_reset_arrow():
1045 * Reset arrow key bindings
1046 */
1047 private void
terminal_reset_arrow(EditLine * el)1048 terminal_reset_arrow(EditLine *el)
1049 {
1050 funckey_t *arrow = el->el_terminal.t_fkey;
1051 static const Char strA[] = {033, '[', 'A', '\0'};
1052 static const Char strB[] = {033, '[', 'B', '\0'};
1053 static const Char strC[] = {033, '[', 'C', '\0'};
1054 static const Char strD[] = {033, '[', 'D', '\0'};
1055 static const Char strH[] = {033, '[', 'H', '\0'};
1056 static const Char strF[] = {033, '[', 'F', '\0'};
1057 static const Char stOA[] = {033, 'O', 'A', '\0'};
1058 static const Char stOB[] = {033, 'O', 'B', '\0'};
1059 static const Char stOC[] = {033, 'O', 'C', '\0'};
1060 static const Char stOD[] = {033, 'O', 'D', '\0'};
1061 static const Char stOH[] = {033, 'O', 'H', '\0'};
1062 static const Char stOF[] = {033, 'O', 'F', '\0'};
1063
1064 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1065 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1066 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1067 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1068 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1069 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1070 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1071 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1072 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1073 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1074 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1075 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1076
1077 if (el->el_map.type != MAP_VI)
1078 return;
1079 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1080 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1081 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1082 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1083 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1084 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1085 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1086 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1087 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1088 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1089 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1090 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1091 }
1092
1093
1094 /* terminal_set_arrow():
1095 * Set an arrow key binding
1096 */
1097 protected int
terminal_set_arrow(EditLine * el,const Char * name,keymacro_value_t * fun,int type)1098 terminal_set_arrow(EditLine *el, const Char *name, keymacro_value_t *fun,
1099 int type)
1100 {
1101 funckey_t *arrow = el->el_terminal.t_fkey;
1102 int i;
1103
1104 for (i = 0; i < A_K_NKEYS; i++)
1105 if (Strcmp(name, arrow[i].name) == 0) {
1106 arrow[i].fun = *fun;
1107 arrow[i].type = type;
1108 return 0;
1109 }
1110 return -1;
1111 }
1112
1113
1114 /* terminal_clear_arrow():
1115 * Clear an arrow key binding
1116 */
1117 protected int
terminal_clear_arrow(EditLine * el,const Char * name)1118 terminal_clear_arrow(EditLine *el, const Char *name)
1119 {
1120 funckey_t *arrow = el->el_terminal.t_fkey;
1121 int i;
1122
1123 for (i = 0; i < A_K_NKEYS; i++)
1124 if (Strcmp(name, arrow[i].name) == 0) {
1125 arrow[i].type = XK_NOD;
1126 return 0;
1127 }
1128 return -1;
1129 }
1130
1131
1132 /* terminal_print_arrow():
1133 * Print the arrow key bindings
1134 */
1135 protected void
terminal_print_arrow(EditLine * el,const Char * name)1136 terminal_print_arrow(EditLine *el, const Char *name)
1137 {
1138 int i;
1139 funckey_t *arrow = el->el_terminal.t_fkey;
1140
1141 for (i = 0; i < A_K_NKEYS; i++)
1142 if (*name == '\0' || Strcmp(name, arrow[i].name) == 0)
1143 if (arrow[i].type != XK_NOD)
1144 keymacro_kprint(el, arrow[i].name,
1145 &arrow[i].fun, arrow[i].type);
1146 }
1147
1148
1149 /* terminal_bind_arrow():
1150 * Bind the arrow keys
1151 */
1152 protected void
terminal_bind_arrow(EditLine * el)1153 terminal_bind_arrow(EditLine *el)
1154 {
1155 el_action_t *map;
1156 const el_action_t *dmap;
1157 int i, j;
1158 char *p;
1159 funckey_t *arrow = el->el_terminal.t_fkey;
1160
1161 /* Check if the components needed are initialized */
1162 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL)
1163 return;
1164
1165 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1166 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1167
1168 terminal_reset_arrow(el);
1169
1170 for (i = 0; i < A_K_NKEYS; i++) {
1171 Char wt_str[VISUAL_WIDTH_MAX];
1172 Char *px;
1173 size_t n;
1174
1175 p = el->el_terminal.t_str[arrow[i].key];
1176 if (!p || !*p)
1177 continue;
1178 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n)
1179 wt_str[n] = p[n];
1180 while (n < VISUAL_WIDTH_MAX)
1181 wt_str[n++] = '\0';
1182 px = wt_str;
1183 j = (unsigned char) *p;
1184 /*
1185 * Assign the arrow keys only if:
1186 *
1187 * 1. They are multi-character arrow keys and the user
1188 * has not re-assigned the leading character, or
1189 * has re-assigned the leading character to be
1190 * ED_SEQUENCE_LEAD_IN
1191 * 2. They are single arrow keys pointing to an
1192 * unassigned key.
1193 */
1194 if (arrow[i].type == XK_NOD)
1195 keymacro_clear(el, map, px);
1196 else {
1197 if (p[1] && (dmap[j] == map[j] ||
1198 map[j] == ED_SEQUENCE_LEAD_IN)) {
1199 keymacro_add(el, px, &arrow[i].fun,
1200 arrow[i].type);
1201 map[j] = ED_SEQUENCE_LEAD_IN;
1202 } else if (map[j] == ED_UNASSIGNED) {
1203 keymacro_clear(el, map, px);
1204 if (arrow[i].type == XK_CMD)
1205 map[j] = arrow[i].fun.cmd;
1206 else
1207 keymacro_add(el, px, &arrow[i].fun,
1208 arrow[i].type);
1209 }
1210 }
1211 }
1212 }
1213
1214 /* terminal_putc():
1215 * Add a character
1216 */
1217 private int
terminal_putc(int c)1218 terminal_putc(int c)
1219 {
1220 if (terminal_outfile == NULL)
1221 return -1;
1222 return fputc(c, terminal_outfile);
1223 }
1224
1225 private void
terminal_tputs(EditLine * el,const char * cap,int affcnt)1226 terminal_tputs(EditLine *el, const char *cap, int affcnt)
1227 {
1228 #ifdef _REENTRANT
1229 pthread_mutex_lock(&terminal_mutex);
1230 #endif
1231 terminal_outfile = el->el_outfile;
1232 (void)tputs(cap, affcnt, terminal_putc);
1233 #ifdef _REENTRANT
1234 pthread_mutex_unlock(&terminal_mutex);
1235 #endif
1236 }
1237
1238 /* terminal__putc():
1239 * Add a character
1240 */
1241 protected int
terminal__putc(EditLine * el,Int c)1242 terminal__putc(EditLine *el, Int c)
1243 {
1244 char buf[MB_LEN_MAX +1];
1245 ssize_t i;
1246 if (c == (Int)MB_FILL_CHAR)
1247 return 0;
1248 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c);
1249 if (i <= 0)
1250 return (int)i;
1251 buf[i] = '\0';
1252 return fputs(buf, el->el_outfile);
1253 }
1254
1255 /* terminal__flush():
1256 * Flush output
1257 */
1258 protected void
terminal__flush(EditLine * el)1259 terminal__flush(EditLine *el)
1260 {
1261
1262 (void) fflush(el->el_outfile);
1263 }
1264
1265 /* terminal_writec():
1266 * Write the given character out, in a human readable form
1267 */
1268 protected void
terminal_writec(EditLine * el,Int c)1269 terminal_writec(EditLine *el, Int c)
1270 {
1271 Char visbuf[VISUAL_WIDTH_MAX +1];
1272 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c);
1273 if (vcnt < 0)
1274 vcnt = 0;
1275 visbuf[vcnt] = '\0';
1276 terminal_overwrite(el, visbuf, (size_t)vcnt);
1277 terminal__flush(el);
1278 }
1279
1280
1281 /* terminal_telltc():
1282 * Print the current termcap characteristics
1283 */
1284 protected int
1285 /*ARGSUSED*/
terminal_telltc(EditLine * el,int argc,const Char ** argv)1286 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)),
1287 const Char **argv __attribute__((__unused__)))
1288 {
1289 const struct termcapstr *t;
1290 char **ts;
1291
1292 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1293 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1294 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1295 Val(T_co), Val(T_li));
1296 (void) fprintf(el->el_outfile,
1297 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1298 (void) fprintf(el->el_outfile,
1299 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1300 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1301 EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1302 if (EL_HAS_AUTO_MARGINS)
1303 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1304 EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1305
1306 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) {
1307 const char *ub;
1308 if (*ts && **ts) {
1309 ub = ct_encode_string(ct_visual_string(
1310 ct_decode_string(*ts, &el->el_scratch)),
1311 &el->el_scratch);
1312 } else {
1313 ub = "(empty)";
1314 }
1315 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1316 t->long_name, t->name, ub);
1317 }
1318 (void) fputc('\n', el->el_outfile);
1319 return 0;
1320 }
1321
1322
1323 /* terminal_settc():
1324 * Change the current terminal characteristics
1325 */
1326 protected int
1327 /*ARGSUSED*/
terminal_settc(EditLine * el,int argc,const Char ** argv)1328 terminal_settc(EditLine *el, int argc __attribute__((__unused__)),
1329 const Char **argv)
1330 {
1331 const struct termcapstr *ts;
1332 const struct termcapval *tv;
1333 char what[8], how[8];
1334
1335 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1336 return -1;
1337
1338 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what));
1339 what[sizeof(what) - 1] = '\0';
1340 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how));
1341 how[sizeof(how) - 1] = '\0';
1342
1343 /*
1344 * Do the strings first
1345 */
1346 for (ts = tstr; ts->name != NULL; ts++)
1347 if (strcmp(ts->name, what) == 0)
1348 break;
1349
1350 if (ts->name != NULL) {
1351 terminal_alloc(el, ts, how);
1352 terminal_setflags(el);
1353 return 0;
1354 }
1355 /*
1356 * Do the numeric ones second
1357 */
1358 for (tv = tval; tv->name != NULL; tv++)
1359 if (strcmp(tv->name, what) == 0)
1360 break;
1361
1362 if (tv->name != NULL)
1363 return -1;
1364
1365 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1366 tv == &tval[T_am] || tv == &tval[T_xn]) {
1367 if (strcmp(how, "yes") == 0)
1368 el->el_terminal.t_val[tv - tval] = 1;
1369 else if (strcmp(how, "no") == 0)
1370 el->el_terminal.t_val[tv - tval] = 0;
1371 else {
1372 (void) fprintf(el->el_errfile,
1373 "" FSTR ": Bad value `%s'.\n", argv[0], how);
1374 return -1;
1375 }
1376 terminal_setflags(el);
1377 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1)
1378 return -1;
1379 return 0;
1380 } else {
1381 long i;
1382 char *ep;
1383
1384 i = strtol(how, &ep, 10);
1385 if (*ep != '\0') {
1386 (void) fprintf(el->el_errfile,
1387 "" FSTR ": Bad value `%s'.\n", argv[0], how);
1388 return -1;
1389 }
1390 el->el_terminal.t_val[tv - tval] = (int) i;
1391 el->el_terminal.t_size.v = Val(T_co);
1392 el->el_terminal.t_size.h = Val(T_li);
1393 if (tv == &tval[T_co] || tv == &tval[T_li])
1394 if (terminal_change_size(el, Val(T_li), Val(T_co))
1395 == -1)
1396 return -1;
1397 return 0;
1398 }
1399 }
1400
1401
1402 /* terminal_gettc():
1403 * Get the current terminal characteristics
1404 */
1405 protected int
1406 /*ARGSUSED*/
terminal_gettc(EditLine * el,int argc,char ** argv)1407 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv)
1408 {
1409 const struct termcapstr *ts;
1410 const struct termcapval *tv;
1411 char *what;
1412 void *how;
1413
1414 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1415 return -1;
1416
1417 what = argv[1];
1418 how = argv[2];
1419
1420 /*
1421 * Do the strings first
1422 */
1423 for (ts = tstr; ts->name != NULL; ts++)
1424 if (strcmp(ts->name, what) == 0)
1425 break;
1426
1427 if (ts->name != NULL) {
1428 *(char **)how = el->el_terminal.t_str[ts - tstr];
1429 return 0;
1430 }
1431 /*
1432 * Do the numeric ones second
1433 */
1434 for (tv = tval; tv->name != NULL; tv++)
1435 if (strcmp(tv->name, what) == 0)
1436 break;
1437
1438 if (tv->name == NULL)
1439 return -1;
1440
1441 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1442 tv == &tval[T_am] || tv == &tval[T_xn]) {
1443 static char yes[] = "yes";
1444 static char no[] = "no";
1445 if (el->el_terminal.t_val[tv - tval])
1446 *(char **)how = yes;
1447 else
1448 *(char **)how = no;
1449 return 0;
1450 } else {
1451 *(int *)how = el->el_terminal.t_val[tv - tval];
1452 return 0;
1453 }
1454 }
1455
1456 /* terminal_echotc():
1457 * Print the termcap string out with variable substitution
1458 */
1459 protected int
1460 /*ARGSUSED*/
terminal_echotc(EditLine * el,int argc,const Char ** argv)1461 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)),
1462 const Char **argv)
1463 {
1464 char *cap, *scap;
1465 Char *ep;
1466 int arg_need, arg_cols, arg_rows;
1467 int verbose = 0, silent = 0;
1468 char *area;
1469 static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1470 const struct termcapstr *t;
1471 char buf[TC_BUFSIZE];
1472 long i;
1473
1474 area = buf;
1475
1476 if (argv == NULL || argv[1] == NULL)
1477 return -1;
1478 argv++;
1479
1480 if (argv[0][0] == '-') {
1481 switch (argv[0][1]) {
1482 case 'v':
1483 verbose = 1;
1484 break;
1485 case 's':
1486 silent = 1;
1487 break;
1488 default:
1489 /* stderror(ERR_NAME | ERR_TCUSAGE); */
1490 break;
1491 }
1492 argv++;
1493 }
1494 if (!*argv || *argv[0] == '\0')
1495 return 0;
1496 if (Strcmp(*argv, STR("tabs")) == 0) {
1497 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1498 return 0;
1499 } else if (Strcmp(*argv, STR("meta")) == 0) {
1500 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1501 return 0;
1502 } else if (Strcmp(*argv, STR("xn")) == 0) {
1503 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1504 "yes" : "no");
1505 return 0;
1506 } else if (Strcmp(*argv, STR("am")) == 0) {
1507 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1508 "yes" : "no");
1509 return 0;
1510 } else if (Strcmp(*argv, STR("baud")) == 0) {
1511 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
1512 return 0;
1513 } else if (Strcmp(*argv, STR("rows")) == 0 ||
1514 Strcmp(*argv, STR("lines")) == 0) {
1515 (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1516 return 0;
1517 } else if (Strcmp(*argv, STR("cols")) == 0) {
1518 (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1519 return 0;
1520 }
1521 /*
1522 * Try to use our local definition first
1523 */
1524 scap = NULL;
1525 for (t = tstr; t->name != NULL; t++)
1526 if (strcmp(t->name,
1527 ct_encode_string(*argv, &el->el_scratch)) == 0) {
1528 scap = el->el_terminal.t_str[t - tstr];
1529 break;
1530 }
1531 if (t->name == NULL) {
1532 /* XXX: some systems' tgetstr needs non const */
1533 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area);
1534 }
1535 if (!scap || scap[0] == '\0') {
1536 if (!silent)
1537 (void) fprintf(el->el_errfile,
1538 "echotc: Termcap parameter `" FSTR "' not found.\n",
1539 *argv);
1540 return -1;
1541 }
1542 /*
1543 * Count home many values we need for this capability.
1544 */
1545 for (cap = scap, arg_need = 0; *cap; cap++)
1546 if (*cap == '%')
1547 switch (*++cap) {
1548 case 'd':
1549 case '2':
1550 case '3':
1551 case '.':
1552 case '+':
1553 arg_need++;
1554 break;
1555 case '%':
1556 case '>':
1557 case 'i':
1558 case 'r':
1559 case 'n':
1560 case 'B':
1561 case 'D':
1562 break;
1563 default:
1564 /*
1565 * hpux has lot's of them...
1566 */
1567 if (verbose)
1568 (void) fprintf(el->el_errfile,
1569 "echotc: Warning: unknown termcap %% `%c'.\n",
1570 *cap);
1571 /* This is bad, but I won't complain */
1572 break;
1573 }
1574
1575 switch (arg_need) {
1576 case 0:
1577 argv++;
1578 if (*argv && *argv[0]) {
1579 if (!silent)
1580 (void) fprintf(el->el_errfile,
1581 "echotc: Warning: Extra argument `" FSTR "'.\n",
1582 *argv);
1583 return -1;
1584 }
1585 terminal_tputs(el, scap, 1);
1586 break;
1587 case 1:
1588 argv++;
1589 if (!*argv || *argv[0] == '\0') {
1590 if (!silent)
1591 (void) fprintf(el->el_errfile,
1592 "echotc: Warning: Missing argument.\n");
1593 return -1;
1594 }
1595 arg_cols = 0;
1596 i = Strtol(*argv, &ep, 10);
1597 if (*ep != '\0' || i < 0) {
1598 if (!silent)
1599 (void) fprintf(el->el_errfile,
1600 "echotc: Bad value `" FSTR "' for rows.\n",
1601 *argv);
1602 return -1;
1603 }
1604 arg_rows = (int) i;
1605 argv++;
1606 if (*argv && *argv[0]) {
1607 if (!silent)
1608 (void) fprintf(el->el_errfile,
1609 "echotc: Warning: Extra argument `" FSTR
1610 "'.\n", *argv);
1611 return -1;
1612 }
1613 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1);
1614 break;
1615 default:
1616 /* This is wrong, but I will ignore it... */
1617 if (verbose)
1618 (void) fprintf(el->el_errfile,
1619 "echotc: Warning: Too many required arguments (%d).\n",
1620 arg_need);
1621 /* FALLTHROUGH */
1622 case 2:
1623 argv++;
1624 if (!*argv || *argv[0] == '\0') {
1625 if (!silent)
1626 (void) fprintf(el->el_errfile,
1627 "echotc: Warning: Missing argument.\n");
1628 return -1;
1629 }
1630 i = Strtol(*argv, &ep, 10);
1631 if (*ep != '\0' || i < 0) {
1632 if (!silent)
1633 (void) fprintf(el->el_errfile,
1634 "echotc: Bad value `" FSTR "' for cols.\n",
1635 *argv);
1636 return -1;
1637 }
1638 arg_cols = (int) i;
1639 argv++;
1640 if (!*argv || *argv[0] == '\0') {
1641 if (!silent)
1642 (void) fprintf(el->el_errfile,
1643 "echotc: Warning: Missing argument.\n");
1644 return -1;
1645 }
1646 i = Strtol(*argv, &ep, 10);
1647 if (*ep != '\0' || i < 0) {
1648 if (!silent)
1649 (void) fprintf(el->el_errfile,
1650 "echotc: Bad value `" FSTR "' for rows.\n",
1651 *argv);
1652 return -1;
1653 }
1654 arg_rows = (int) i;
1655 if (*ep != '\0') {
1656 if (!silent)
1657 (void) fprintf(el->el_errfile,
1658 "echotc: Bad value `" FSTR "'.\n", *argv);
1659 return -1;
1660 }
1661 argv++;
1662 if (*argv && *argv[0]) {
1663 if (!silent)
1664 (void) fprintf(el->el_errfile,
1665 "echotc: Warning: Extra argument `" FSTR
1666 "'.\n", *argv);
1667 return -1;
1668 }
1669 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows);
1670 break;
1671 }
1672 return 0;
1673 }
1674