1 /** $MirOS: src/lib/libedit/term.c,v 1.3 2005/04/19 19:30:35 tg Exp $ */
2 /* $OpenBSD: term.c,v 1.11 2003/10/31 08:42:24 otto Exp $ */
3 /* $NetBSD: term.c,v 1.40 2004/05/22 23:21:28 christos Exp $ */
4
5 /*-
6 * Copyright (c) 1992, 1993
7 * The Regents of the University of California. All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * Christos Zoulas of Cornell University.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #include "config.h"
38
39 /*
40 * term.c: Editor/termcap-curses interface
41 * We have to declare a static variable here, since the
42 * termcap putchar routine does not take an argument!
43 */
44 #include <stdio.h>
45 #include <signal.h>
46 #include <string.h>
47 #include <stdlib.h>
48 #include <unistd.h>
49 #ifdef HAVE_TERMCAP_H
50 #include <termcap.h>
51 #endif
52 #ifdef HAVE_CURSES_H
53 #include <curses.h>
54 #endif
55 #ifdef HAVE_NCURSES_H
56 #include <ncurses.h>
57 #endif
58 /* Solaris's term.h does horrid things. */
59 #if (defined(HAVE_TERM_H) && !defined(SUNOS))
60 #include <term.h>
61 #endif
62 #include <sys/types.h>
63 #include <sys/ioctl.h>
64
65 #include "el.h"
66
67 __SCCSID("@(#)term.c 8.2 (Berkeley) 4/30/95");
68 __RCSID("$MirOS: src/lib/libedit/term.c,v 1.3 2005/04/19 19:30:35 tg Exp $");
69
70 /*
71 * IMPORTANT NOTE: these routines are allowed to look at the current screen
72 * and the current possition assuming that it is correct. If this is not
73 * true, then the update will be WRONG! This is (should be) a valid
74 * assumption...
75 */
76
77 #define TC_BUFSIZE 2048
78
79 #define GoodStr(a) (el->el_term.t_str[a] != NULL && \
80 el->el_term.t_str[a][0] != '\0')
81 #define Str(a) el->el_term.t_str[a]
82 #define Val(a) el->el_term.t_val[a]
83
84 #ifdef notdef
85 private const struct {
86 const char *b_name;
87 int b_rate;
88 } baud_rate[] = {
89 #ifdef B0
90 { "0", B0 },
91 #endif
92 #ifdef B50
93 { "50", B50 },
94 #endif
95 #ifdef B75
96 { "75", B75 },
97 #endif
98 #ifdef B110
99 { "110", B110 },
100 #endif
101 #ifdef B134
102 { "134", B134 },
103 #endif
104 #ifdef B150
105 { "150", B150 },
106 #endif
107 #ifdef B200
108 { "200", B200 },
109 #endif
110 #ifdef B300
111 { "300", B300 },
112 #endif
113 #ifdef B600
114 { "600", B600 },
115 #endif
116 #ifdef B900
117 { "900", B900 },
118 #endif
119 #ifdef B1200
120 { "1200", B1200 },
121 #endif
122 #ifdef B1800
123 { "1800", B1800 },
124 #endif
125 #ifdef B2400
126 { "2400", B2400 },
127 #endif
128 #ifdef B3600
129 { "3600", B3600 },
130 #endif
131 #ifdef B4800
132 { "4800", B4800 },
133 #endif
134 #ifdef B7200
135 { "7200", B7200 },
136 #endif
137 #ifdef B9600
138 { "9600", B9600 },
139 #endif
140 #ifdef EXTA
141 { "19200", EXTA },
142 #endif
143 #ifdef B19200
144 { "19200", B19200 },
145 #endif
146 #ifdef EXTB
147 { "38400", EXTB },
148 #endif
149 #ifdef B38400
150 { "38400", B38400 },
151 #endif
152 { NULL, 0 }
153 };
154 #endif
155
156 private const struct termcapstr {
157 const char *name;
158 const char *long_name;
159 } tstr[] = {
160 #define T_al 0
161 { "al", "add new blank line" },
162 #define T_bl 1
163 { "bl", "audible bell" },
164 #define T_cd 2
165 { "cd", "clear to bottom" },
166 #define T_ce 3
167 { "ce", "clear to end of line" },
168 #define T_ch 4
169 { "ch", "cursor to horiz pos" },
170 #define T_cl 5
171 { "cl", "clear screen" },
172 #define T_dc 6
173 { "dc", "delete a character" },
174 #define T_dl 7
175 { "dl", "delete a line" },
176 #define T_dm 8
177 { "dm", "start delete mode" },
178 #define T_ed 9
179 { "ed", "end delete mode" },
180 #define T_ei 10
181 { "ei", "end insert mode" },
182 #define T_fs 11
183 { "fs", "cursor from status line" },
184 #define T_ho 12
185 { "ho", "home cursor" },
186 #define T_ic 13
187 { "ic", "insert character" },
188 #define T_im 14
189 { "im", "start insert mode" },
190 #define T_ip 15
191 { "ip", "insert padding" },
192 #define T_kd 16
193 { "kd", "sends cursor down" },
194 #define T_kl 17
195 { "kl", "sends cursor left" },
196 #define T_kr 18
197 { "kr", "sends cursor right" },
198 #define T_ku 19
199 { "ku", "sends cursor up" },
200 #define T_md 20
201 { "md", "begin bold" },
202 #define T_me 21
203 { "me", "end attributes" },
204 #define T_nd 22
205 { "nd", "non destructive space" },
206 #define T_se 23
207 { "se", "end standout" },
208 #define T_so 24
209 { "so", "begin standout" },
210 #define T_ts 25
211 { "ts", "cursor to status line" },
212 #define T_up 26
213 { "up", "cursor up one" },
214 #define T_us 27
215 { "us", "begin underline" },
216 #define T_ue 28
217 { "ue", "end underline" },
218 #define T_vb 29
219 { "vb", "visible bell" },
220 #define T_DC 30
221 { "DC", "delete multiple chars" },
222 #define T_DO 31
223 { "DO", "cursor down multiple" },
224 #define T_IC 32
225 { "IC", "insert multiple chars" },
226 #define T_LE 33
227 { "LE", "cursor left multiple" },
228 #define T_RI 34
229 { "RI", "cursor right multiple" },
230 #define T_UP 35
231 { "UP", "cursor up multiple" },
232 #define T_kh 36
233 { "kh", "send cursor home" },
234 #define T_at7 37
235 { "@7", "send cursor end" },
236 #define T_str 38
237 { NULL, NULL }
238 };
239
240 private const struct termcapval {
241 const char *name;
242 const char *long_name;
243 } tval[] = {
244 #define T_am 0
245 { "am", "has automatic margins" },
246 #define T_pt 1
247 { "pt", "has physical tabs" },
248 #define T_li 2
249 { "li", "Number of lines" },
250 #define T_co 3
251 { "co", "Number of columns" },
252 #define T_km 4
253 { "km", "Has meta key" },
254 #define T_xt 5
255 { "xt", "Tab chars destructive" },
256 #define T_xn 6
257 { "xn", "newline ignored at right margin" },
258 #define T_MT 7
259 { "MT", "Has meta key" }, /* XXX? */
260 #define T_val 8
261 { NULL, NULL, }
262 };
263 /* do two or more of the attributes use me */
264
265 private void term_setflags(EditLine *);
266 private int term_rebuffer_display(EditLine *);
267 private void term_free_display(EditLine *);
268 private int term_alloc_display(EditLine *);
269 private void term_alloc(EditLine *, const struct termcapstr *, const char *);
270 private void term_init_arrow(EditLine *);
271 private void term_reset_arrow(EditLine *);
272
273
274 private FILE *term_outfile = NULL; /* XXX: How do we fix that? */
275
276
277 /* term_setflags():
278 * Set the terminal capability flags
279 */
280 private void
term_setflags(EditLine * el)281 term_setflags(EditLine *el)
282 {
283 EL_FLAGS = 0;
284 if (el->el_tty.t_tabs)
285 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
286
287 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
288 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
289 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
290 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
291 TERM_CAN_INSERT : 0;
292 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
293 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
294 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
295
296 if (GoodStr(T_me) && GoodStr(T_ue))
297 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
298 TERM_CAN_ME : 0;
299 else
300 EL_FLAGS &= ~TERM_CAN_ME;
301 if (GoodStr(T_me) && GoodStr(T_se))
302 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
303 TERM_CAN_ME : 0;
304
305
306 #ifdef DEBUG_SCREEN
307 if (!EL_CAN_UP) {
308 (void) fprintf(el->el_errfile,
309 "WARNING: Your terminal cannot move up.\n");
310 (void) fprintf(el->el_errfile,
311 "Editing may be odd for long lines.\n");
312 }
313 if (!EL_CAN_CEOL)
314 (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
315 if (!EL_CAN_DELETE)
316 (void) fprintf(el->el_errfile, "no delete char capability.\n");
317 if (!EL_CAN_INSERT)
318 (void) fprintf(el->el_errfile, "no insert char capability.\n");
319 #endif /* DEBUG_SCREEN */
320 }
321
322
323 /* term_init():
324 * Initialize the terminal stuff
325 */
326 protected int
term_init(EditLine * el)327 term_init(EditLine *el)
328 {
329
330 el->el_term.t_buf = (char *) el_malloc(TC_BUFSIZE);
331 if (el->el_term.t_buf == NULL)
332 return (-1);
333 el->el_term.t_cap = (char *) el_malloc(TC_BUFSIZE);
334 if (el->el_term.t_cap == NULL)
335 return (-1);
336 el->el_term.t_fkey = (fkey_t *) el_malloc(A_K_NKEYS * sizeof(fkey_t));
337 if (el->el_term.t_fkey == NULL)
338 return (-1);
339 el->el_term.t_loc = 0;
340 el->el_term.t_str = (char **) el_malloc(T_str * sizeof(char *));
341 if (el->el_term.t_str == NULL)
342 return (-1);
343 (void) memset(el->el_term.t_str, 0, T_str * sizeof(char *));
344 el->el_term.t_val = (int *) el_malloc(T_val * sizeof(int));
345 if (el->el_term.t_val == NULL)
346 return (-1);
347 (void) memset(el->el_term.t_val, 0, T_val * sizeof(int));
348 term_outfile = el->el_outfile;
349 (void) term_set(el, NULL);
350 term_init_arrow(el);
351 return (0);
352 }
353
354 /* term_end():
355 * Clean up the terminal stuff
356 */
357 protected void
term_end(EditLine * el)358 term_end(EditLine *el)
359 {
360
361 el_free((ptr_t) el->el_term.t_buf);
362 el->el_term.t_buf = NULL;
363 el_free((ptr_t) el->el_term.t_cap);
364 el->el_term.t_cap = NULL;
365 el->el_term.t_loc = 0;
366 el_free((ptr_t) el->el_term.t_str);
367 el->el_term.t_str = NULL;
368 el_free((ptr_t) el->el_term.t_val);
369 el->el_term.t_val = NULL;
370 el_free((ptr_t) el->el_term.t_fkey);
371 el->el_term.t_fkey = NULL;
372 term_free_display(el);
373 }
374
375
376 /* term_alloc():
377 * Maintain a string pool for termcap strings
378 */
379 private void
term_alloc(EditLine * el,const struct termcapstr * t,const char * cap)380 term_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
381 {
382 char termbuf[TC_BUFSIZE];
383 int tlen, clen;
384 char **tlist = el->el_term.t_str;
385 char **tmp, **str = &tlist[t - tstr];
386
387 if (cap == NULL || *cap == '\0') {
388 *str = NULL;
389 return;
390 } else
391 clen = strlen(cap);
392
393 tlen = *str == NULL ? 0 : strlen(*str);
394
395 /*
396 * New string is shorter; no need to allocate space
397 */
398 if (clen <= tlen) {
399 (void) strlcpy(*str, cap, tlen + 1);
400 return;
401 }
402 /*
403 * New string is longer; see if we have enough space to append
404 */
405 if (el->el_term.t_loc + 3 < TC_BUFSIZE) {
406 tlen = TC_BUFSIZE - el->el_term.t_loc;
407 (void) strlcpy(*str = &el->el_term.t_buf[el->el_term.t_loc],
408 cap, tlen);
409 el->el_term.t_loc += clen + 1; /* one for \0 */
410 return;
411 }
412 /*
413 * Compact our buffer; no need to check compaction, cause we know it
414 * fits...
415 */
416 tlen = 0;
417 for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
418 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
419 char *ptr;
420
421 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
422 continue;
423 termbuf[tlen++] = '\0';
424 }
425 memcpy(el->el_term.t_buf, termbuf, TC_BUFSIZE);
426 el->el_term.t_loc = tlen;
427 if (el->el_term.t_loc + 3 >= TC_BUFSIZE) {
428 (void) fprintf(el->el_errfile,
429 "Out of termcap string space.\n");
430 return;
431 }
432 tlen = TC_BUFSIZE - el->el_term.t_loc;
433 (void) strlcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap, tlen);
434 el->el_term.t_loc += clen + 1; /* one for \0 */
435 return;
436 }
437
438
439 /* term_rebuffer_display():
440 * Rebuffer the display after the screen changed size
441 */
442 private int
term_rebuffer_display(EditLine * el)443 term_rebuffer_display(EditLine *el)
444 {
445 coord_t *c = &el->el_term.t_size;
446
447 term_free_display(el);
448
449 c->h = Val(T_co);
450 c->v = Val(T_li);
451
452 if (term_alloc_display(el) == -1)
453 return (-1);
454 return (0);
455 }
456
457
458 /* term_alloc_display():
459 * Allocate a new display.
460 */
461 private int
term_alloc_display(EditLine * el)462 term_alloc_display(EditLine *el)
463 {
464 int i;
465 char **b;
466 coord_t *c = &el->el_term.t_size;
467
468 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
469 if (b == NULL)
470 return (-1);
471 for (i = 0; i < c->v; i++) {
472 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
473 if (b[i] == NULL)
474 return (-1);
475 }
476 b[c->v] = NULL;
477 el->el_display = b;
478
479 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
480 if (b == NULL)
481 return (-1);
482 for (i = 0; i < c->v; i++) {
483 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
484 if (b[i] == NULL)
485 return (-1);
486 }
487 b[c->v] = NULL;
488 el->el_vdisplay = b;
489 return (0);
490 }
491
492
493 /* term_free_display():
494 * Free the display buffers
495 */
496 private void
term_free_display(EditLine * el)497 term_free_display(EditLine *el)
498 {
499 char **b;
500 char **bufp;
501
502 b = el->el_display;
503 el->el_display = NULL;
504 if (b != NULL) {
505 for (bufp = b; *bufp != NULL; bufp++)
506 el_free((ptr_t) * bufp);
507 el_free((ptr_t) b);
508 }
509 b = el->el_vdisplay;
510 el->el_vdisplay = NULL;
511 if (b != NULL) {
512 for (bufp = b; *bufp != NULL; bufp++)
513 el_free((ptr_t) * bufp);
514 el_free((ptr_t) b);
515 }
516 }
517
518
519 /* term_move_to_line():
520 * move to line <where> (first line == 0)
521 * as efficiently as possible
522 */
523 protected void
term_move_to_line(EditLine * el,int where)524 term_move_to_line(EditLine *el, int where)
525 {
526 int del;
527
528 if (where == el->el_cursor.v)
529 return;
530
531 if (where > el->el_term.t_size.v) {
532 #ifdef DEBUG_SCREEN
533 (void) fprintf(el->el_errfile,
534 "term_move_to_line: where is ridiculous: %d\r\n", where);
535 #endif /* DEBUG_SCREEN */
536 return;
537 }
538 if ((del = where - el->el_cursor.v) > 0) {
539 while (del > 0) {
540 if (EL_HAS_AUTO_MARGINS &&
541 el->el_display[el->el_cursor.v][0] != '\0') {
542 /* move without newline */
543 term_move_to_char(el, el->el_term.t_size.h - 1);
544 term_overwrite(el,
545 &el->el_display[el->el_cursor.v][el->el_cursor.h],
546 1);
547 /* updates Cursor */
548 del--;
549 } else {
550 if ((del > 1) && GoodStr(T_DO)) {
551 (void) tputs(tgoto(Str(T_DO), del, del),
552 del, term__putc);
553 del = 0;
554 } else {
555 for (; del > 0; del--)
556 term__putc('\n');
557 /* because the \n will become \r\n */
558 el->el_cursor.h = 0;
559 }
560 }
561 }
562 } else { /* del < 0 */
563 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
564 (void) tputs(tgoto(Str(T_UP), -del, -del), -del,
565 term__putc);
566 else {
567 if (GoodStr(T_up))
568 for (; del < 0; del++)
569 (void) tputs(Str(T_up), 1, term__putc);
570 }
571 }
572 el->el_cursor.v = where;/* now where is here */
573 }
574
575
576 /* term_move_to_char():
577 * Move to the character position specified
578 */
579 protected void
term_move_to_char(EditLine * el,int where)580 term_move_to_char(EditLine *el, int where)
581 {
582 int del, i;
583
584 mc_again:
585 if (where == el->el_cursor.h)
586 return;
587
588 if (where > el->el_term.t_size.h) {
589 #ifdef DEBUG_SCREEN
590 (void) fprintf(el->el_errfile,
591 "term_move_to_char: where is riduculous: %d\r\n", where);
592 #endif /* DEBUG_SCREEN */
593 return;
594 }
595 if (!where) { /* if where is first column */
596 term__putc('\r'); /* do a CR */
597 el->el_cursor.h = 0;
598 return;
599 }
600 del = where - el->el_cursor.h;
601
602 if ((del < -4 || del > 4) && GoodStr(T_ch))
603 /* go there directly */
604 (void) tputs(tgoto(Str(T_ch), where, where), where, term__putc);
605 else {
606 if (del > 0) { /* moving forward */
607 if ((del > 4) && GoodStr(T_RI))
608 (void) tputs(tgoto(Str(T_RI), del, del),
609 del, term__putc);
610 else {
611 /* if I can do tabs, use them */
612 if (EL_CAN_TAB) {
613 if ((el->el_cursor.h & 0370) !=
614 (where & 0370)) {
615 /* if not within tab stop */
616 for (i =
617 (el->el_cursor.h & 0370);
618 i < (where & 0370);
619 i += 8)
620 term__putc('\t');
621 /* then tab over */
622 el->el_cursor.h = where & 0370;
623 }
624 }
625 /*
626 * it's usually cheaper to just write the
627 * chars, so we do.
628 */
629 /*
630 * NOTE THAT term_overwrite() WILL CHANGE
631 * el->el_cursor.h!!!
632 */
633 term_overwrite(el,
634 &el->el_display[el->el_cursor.v][el->el_cursor.h],
635 where - el->el_cursor.h);
636
637 }
638 } else { /* del < 0 := moving backward */
639 if ((-del > 4) && GoodStr(T_LE))
640 (void) tputs(tgoto(Str(T_LE), -del, -del),
641 -del, term__putc);
642 else { /* can't go directly there */
643 /*
644 * if the "cost" is greater than the "cost"
645 * from col 0
646 */
647 if (EL_CAN_TAB ?
648 ((unsigned int)-del >
649 (((unsigned int) where >> 3) +
650 (where & 07)))
651 : (-del > where)) {
652 term__putc('\r'); /* do a CR */
653 el->el_cursor.h = 0;
654 goto mc_again; /* and try again */
655 }
656 for (i = 0; i < -del; i++)
657 term__putc('\b');
658 }
659 }
660 }
661 el->el_cursor.h = where; /* now where is here */
662 }
663
664
665 /* term_overwrite():
666 * Overstrike num characters
667 */
668 protected void
term_overwrite(EditLine * el,const char * cp,int n)669 term_overwrite(EditLine *el, const char *cp, int n)
670 {
671 if (n <= 0)
672 return; /* catch bugs */
673
674 if (n > el->el_term.t_size.h) {
675 #ifdef DEBUG_SCREEN
676 (void) fprintf(el->el_errfile,
677 "term_overwrite: n is riduculous: %d\r\n", n);
678 #endif /* DEBUG_SCREEN */
679 return;
680 }
681 do {
682 term__putc(*cp++);
683 el->el_cursor.h++;
684 } while (--n);
685
686 if (el->el_cursor.h >= el->el_term.t_size.h) { /* wrap? */
687 if (EL_HAS_AUTO_MARGINS) { /* yes */
688 el->el_cursor.h = 0;
689 el->el_cursor.v++;
690 if (EL_HAS_MAGIC_MARGINS) {
691 /* force the wrap to avoid the "magic"
692 * situation */
693 char c;
694 if ((c = el->el_display[el->el_cursor.v][el->el_cursor.h])
695 != '\0')
696 term_overwrite(el, &c, 1);
697 else
698 term__putc(' ');
699 el->el_cursor.h = 1;
700 }
701 } else /* no wrap, but cursor stays on screen */
702 el->el_cursor.h = el->el_term.t_size.h;
703 }
704 }
705
706
707 /* term_deletechars():
708 * Delete num characters
709 */
710 protected void
term_deletechars(EditLine * el,int num)711 term_deletechars(EditLine *el, int num)
712 {
713 if (num <= 0)
714 return;
715
716 if (!EL_CAN_DELETE) {
717 #ifdef DEBUG_EDIT
718 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
719 #endif /* DEBUG_EDIT */
720 return;
721 }
722 if (num > el->el_term.t_size.h) {
723 #ifdef DEBUG_SCREEN
724 (void) fprintf(el->el_errfile,
725 "term_deletechars: num is riduculous: %d\r\n", num);
726 #endif /* DEBUG_SCREEN */
727 return;
728 }
729 if (GoodStr(T_DC)) /* if I have multiple delete */
730 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
731 * expen. */
732 (void) tputs(tgoto(Str(T_DC), num, num),
733 num, term__putc);
734 return;
735 }
736 if (GoodStr(T_dm)) /* if I have delete mode */
737 (void) tputs(Str(T_dm), 1, term__putc);
738
739 if (GoodStr(T_dc)) /* else do one at a time */
740 while (num--)
741 (void) tputs(Str(T_dc), 1, term__putc);
742
743 if (GoodStr(T_ed)) /* if I have delete mode */
744 (void) tputs(Str(T_ed), 1, term__putc);
745 }
746
747
748 /* term_insertwrite():
749 * Puts terminal in insert character mode or inserts num
750 * characters in the line
751 */
752 protected void
term_insertwrite(EditLine * el,char * cp,int num)753 term_insertwrite(EditLine *el, char *cp, int num)
754 {
755 if (num <= 0)
756 return;
757 if (!EL_CAN_INSERT) {
758 #ifdef DEBUG_EDIT
759 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
760 #endif /* DEBUG_EDIT */
761 return;
762 }
763 if (num > el->el_term.t_size.h) {
764 #ifdef DEBUG_SCREEN
765 (void) fprintf(el->el_errfile,
766 "StartInsert: num is riduculous: %d\r\n", num);
767 #endif /* DEBUG_SCREEN */
768 return;
769 }
770 if (GoodStr(T_IC)) /* if I have multiple insert */
771 if ((num > 1) || !GoodStr(T_ic)) {
772 /* if ic would be more expensive */
773 (void) tputs(tgoto(Str(T_IC), num, num),
774 num, term__putc);
775 term_overwrite(el, cp, num);
776 /* this updates el_cursor.h */
777 return;
778 }
779 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
780 (void) tputs(Str(T_im), 1, term__putc);
781
782 el->el_cursor.h += num;
783 do
784 term__putc(*cp++);
785 while (--num);
786
787 if (GoodStr(T_ip)) /* have to make num chars insert */
788 (void) tputs(Str(T_ip), 1, term__putc);
789
790 (void) tputs(Str(T_ei), 1, term__putc);
791 return;
792 }
793 do {
794 if (GoodStr(T_ic)) /* have to make num chars insert */
795 (void) tputs(Str(T_ic), 1, term__putc);
796 /* insert a char */
797
798 term__putc(*cp++);
799
800 el->el_cursor.h++;
801
802 if (GoodStr(T_ip)) /* have to make num chars insert */
803 (void) tputs(Str(T_ip), 1, term__putc);
804 /* pad the inserted char */
805
806 } while (--num);
807 }
808
809
810 /* term_clear_EOL():
811 * clear to end of line. There are num characters to clear
812 */
813 protected void
term_clear_EOL(EditLine * el,int num)814 term_clear_EOL(EditLine *el, int num)
815 {
816 int i;
817
818 if (EL_CAN_CEOL && GoodStr(T_ce))
819 (void) tputs(Str(T_ce), 1, term__putc);
820 else {
821 for (i = 0; i < num; i++)
822 term__putc(' ');
823 el->el_cursor.h += num; /* have written num spaces */
824 }
825 }
826
827
828 /* term_clear_screen():
829 * Clear the screen
830 */
831 protected void
term_clear_screen(EditLine * el)832 term_clear_screen(EditLine *el)
833 { /* clear the whole screen and home */
834
835 if (GoodStr(T_cl))
836 /* send the clear screen code */
837 (void) tputs(Str(T_cl), Val(T_li), term__putc);
838 else if (GoodStr(T_ho) && GoodStr(T_cd)) {
839 (void) tputs(Str(T_ho), Val(T_li), term__putc); /* home */
840 /* clear to bottom of screen */
841 (void) tputs(Str(T_cd), Val(T_li), term__putc);
842 } else {
843 term__putc('\r');
844 term__putc('\n');
845 }
846 }
847
848
849 /* term_beep():
850 * Beep the way the terminal wants us
851 */
852 protected void
term_beep(EditLine * el)853 term_beep(EditLine *el)
854 {
855 if (GoodStr(T_bl))
856 /* what termcap says we should use */
857 (void) tputs(Str(T_bl), 1, term__putc);
858 else
859 term__putc('\007'); /* an ASCII bell; ^G */
860 }
861
862
863 #ifdef notdef
864 /* term_clear_to_bottom():
865 * Clear to the bottom of the screen
866 */
867 protected void
term_clear_to_bottom(EditLine * el)868 term_clear_to_bottom(EditLine *el)
869 {
870 if (GoodStr(T_cd))
871 (void) tputs(Str(T_cd), Val(T_li), term__putc);
872 else if (GoodStr(T_ce))
873 (void) tputs(Str(T_ce), Val(T_li), term__putc);
874 }
875 #endif
876
877 protected void
term_get(EditLine * el,const char ** term)878 term_get(EditLine *el, const char **term)
879 {
880 *term = el->el_term.t_name;
881 }
882
883
884 /* term_set():
885 * Read in the terminal capabilities from the requested terminal
886 */
887 protected int
term_set(EditLine * el,const char * term)888 term_set(EditLine *el, const char *term)
889 {
890 int i;
891 char buf[TC_BUFSIZE];
892 char *area;
893 const struct termcapstr *t;
894 sigset_t oset, nset;
895 int lins, cols;
896
897 (void) sigemptyset(&nset);
898 (void) sigaddset(&nset, SIGWINCH);
899 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
900
901 area = buf;
902
903
904 if (term == NULL)
905 term = getenv("TERM");
906
907 if (!term || !term[0])
908 term = "dumb";
909
910 if (strcmp(term, "emacs") == 0)
911 el->el_flags |= EDIT_DISABLED;
912
913 memset(el->el_term.t_cap, 0, TC_BUFSIZE);
914
915 i = tgetent(el->el_term.t_cap, term);
916
917 if (i <= 0) {
918 if (i == -1)
919 (void) fprintf(el->el_errfile,
920 "Cannot read termcap database;\n");
921 else if (i == 0)
922 (void) fprintf(el->el_errfile,
923 "No entry for terminal type \"%s\";\n", term);
924 (void) fprintf(el->el_errfile,
925 "using dumb terminal settings.\n");
926 Val(T_co) = 80; /* do a dumb terminal */
927 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
928 Val(T_xt) = Val(T_MT);
929 for (t = tstr; t->name != NULL; t++)
930 term_alloc(el, t, NULL);
931 } else {
932 /* auto/magic margins */
933 Val(T_am) = tgetflag("am");
934 Val(T_xn) = tgetflag("xn");
935 /* Can we tab */
936 Val(T_pt) = tgetflag("pt");
937 Val(T_xt) = tgetflag("xt");
938 /* do we have a meta? */
939 Val(T_km) = tgetflag("km");
940 Val(T_MT) = tgetflag("MT");
941 /* Get the size */
942 Val(T_co) = tgetnum("co");
943 Val(T_li) = tgetnum("li");
944 for (t = tstr; t->name != NULL; t++)
945 term_alloc(el, t, tgetstr((char *)t->name, &area));
946 }
947
948 if (Val(T_co) < 2)
949 Val(T_co) = 80; /* just in case */
950 if (Val(T_li) < 1)
951 Val(T_li) = 24;
952
953 el->el_term.t_size.v = Val(T_co);
954 el->el_term.t_size.h = Val(T_li);
955
956 term_setflags(el);
957
958 /* get the correct window size */
959 (void) term_get_size(el, &lins, &cols);
960 if (term_change_size(el, lins, cols) == -1)
961 return (-1);
962 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
963 term_bind_arrow(el);
964 el->el_term.t_name = term;
965 return (i <= 0 ? -1 : 0);
966 }
967
968
969 /* term_get_size():
970 * Return the new window size in lines and cols, and
971 * true if the size was changed.
972 */
973 protected int
term_get_size(EditLine * el,int * lins,int * cols)974 term_get_size(EditLine *el, int *lins, int *cols)
975 {
976
977 *cols = Val(T_co);
978 *lins = Val(T_li);
979
980 #ifdef TIOCGWINSZ
981 {
982 struct winsize ws;
983 if (ioctl(el->el_infd, TIOCGWINSZ, (ioctl_t) & ws) != -1) {
984 if (ws.ws_col)
985 *cols = ws.ws_col;
986 if (ws.ws_row)
987 *lins = ws.ws_row;
988 }
989 }
990 #endif
991 #ifdef TIOCGSIZE
992 {
993 struct ttysize ts;
994 if (ioctl(el->el_infd, TIOCGSIZE, (ioctl_t) & ts) != -1) {
995 if (ts.ts_cols)
996 *cols = ts.ts_cols;
997 if (ts.ts_lines)
998 *lins = ts.ts_lines;
999 }
1000 }
1001 #endif
1002 return (Val(T_co) != *cols || Val(T_li) != *lins);
1003 }
1004
1005
1006 /* term_change_size():
1007 * Change the size of the terminal
1008 */
1009 protected int
term_change_size(EditLine * el,int lins,int cols)1010 term_change_size(EditLine *el, int lins, int cols)
1011 {
1012 /*
1013 * Just in case
1014 */
1015 Val(T_co) = (cols < 2) ? 80 : cols;
1016 Val(T_li) = (lins < 1) ? 24 : lins;
1017
1018 /* re-make display buffers */
1019 if (term_rebuffer_display(el) == -1)
1020 return (-1);
1021 re_clear_display(el);
1022 return (0);
1023 }
1024
1025
1026 /* term_init_arrow():
1027 * Initialize the arrow key bindings from termcap
1028 */
1029 private void
term_init_arrow(EditLine * el)1030 term_init_arrow(EditLine *el)
1031 {
1032 fkey_t *arrow = el->el_term.t_fkey;
1033
1034 arrow[A_K_DN].name = "down";
1035 arrow[A_K_DN].key = T_kd;
1036 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
1037 arrow[A_K_DN].type = XK_CMD;
1038
1039 arrow[A_K_UP].name = "up";
1040 arrow[A_K_UP].key = T_ku;
1041 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
1042 arrow[A_K_UP].type = XK_CMD;
1043
1044 arrow[A_K_LT].name = "left";
1045 arrow[A_K_LT].key = T_kl;
1046 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1047 arrow[A_K_LT].type = XK_CMD;
1048
1049 arrow[A_K_RT].name = "right";
1050 arrow[A_K_RT].key = T_kr;
1051 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1052 arrow[A_K_RT].type = XK_CMD;
1053
1054 arrow[A_K_HO].name = "home";
1055 arrow[A_K_HO].key = T_kh;
1056 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1057 arrow[A_K_HO].type = XK_CMD;
1058
1059 arrow[A_K_EN].name = "end";
1060 arrow[A_K_EN].key = T_at7;
1061 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1062 arrow[A_K_EN].type = XK_CMD;
1063 }
1064
1065
1066 /* term_reset_arrow():
1067 * Reset arrow key bindings
1068 */
1069 private void
term_reset_arrow(EditLine * el)1070 term_reset_arrow(EditLine *el)
1071 {
1072 fkey_t *arrow = el->el_term.t_fkey;
1073 static const char strA[] = {033, '[', 'A', '\0'};
1074 static const char strB[] = {033, '[', 'B', '\0'};
1075 static const char strC[] = {033, '[', 'C', '\0'};
1076 static const char strD[] = {033, '[', 'D', '\0'};
1077 static const char strH[] = {033, '[', 'H', '\0'};
1078 static const char strF[] = {033, '[', 'F', '\0'};
1079 static const char stOA[] = {033, 'O', 'A', '\0'};
1080 static const char stOB[] = {033, 'O', 'B', '\0'};
1081 static const char stOC[] = {033, 'O', 'C', '\0'};
1082 static const char stOD[] = {033, 'O', 'D', '\0'};
1083 static const char stOH[] = {033, 'O', 'H', '\0'};
1084 static const char stOF[] = {033, 'O', 'F', '\0'};
1085
1086 key_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1087 key_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1088 key_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1089 key_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1090 key_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1091 key_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1092 key_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1093 key_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1094 key_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1095 key_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1096 key_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1097 key_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1098
1099 if (el->el_map.type == MAP_VI) {
1100 key_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1101 key_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1102 key_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1103 key_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1104 key_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1105 key_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1106 key_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1107 key_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1108 key_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1109 key_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1110 key_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1111 key_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1112 }
1113 }
1114
1115
1116 /* term_set_arrow():
1117 * Set an arrow key binding
1118 */
1119 protected int
term_set_arrow(EditLine * el,const char * name,key_value_t * fun,int type)1120 term_set_arrow(EditLine *el, const char *name, key_value_t *fun, int type)
1121 {
1122 fkey_t *arrow = el->el_term.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].fun = *fun;
1128 arrow[i].type = type;
1129 return (0);
1130 }
1131 return (-1);
1132 }
1133
1134
1135 /* term_clear_arrow():
1136 * Clear an arrow key binding
1137 */
1138 protected int
term_clear_arrow(EditLine * el,const char * name)1139 term_clear_arrow(EditLine *el, const char *name)
1140 {
1141 fkey_t *arrow = el->el_term.t_fkey;
1142 int i;
1143
1144 for (i = 0; i < A_K_NKEYS; i++)
1145 if (strcmp(name, arrow[i].name) == 0) {
1146 arrow[i].type = XK_NOD;
1147 return (0);
1148 }
1149 return (-1);
1150 }
1151
1152
1153 /* term_print_arrow():
1154 * Print the arrow key bindings
1155 */
1156 protected void
term_print_arrow(EditLine * el,const char * name)1157 term_print_arrow(EditLine *el, const char *name)
1158 {
1159 int i;
1160 fkey_t *arrow = el->el_term.t_fkey;
1161
1162 for (i = 0; i < A_K_NKEYS; i++)
1163 if (*name == '\0' || strcmp(name, arrow[i].name) == 0)
1164 if (arrow[i].type != XK_NOD)
1165 key_kprint(el, arrow[i].name, &arrow[i].fun,
1166 arrow[i].type);
1167 }
1168
1169
1170 /* term_bind_arrow():
1171 * Bind the arrow keys
1172 */
1173 protected void
term_bind_arrow(EditLine * el)1174 term_bind_arrow(EditLine *el)
1175 {
1176 el_action_t *map;
1177 const el_action_t *dmap;
1178 int i, j;
1179 char *p;
1180 fkey_t *arrow = el->el_term.t_fkey;
1181
1182 /* Check if the components needed are initialized */
1183 if (el->el_term.t_buf == NULL || el->el_map.key == NULL)
1184 return;
1185
1186 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1187 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1188
1189 term_reset_arrow(el);
1190
1191 for (i = 0; i < A_K_NKEYS; i++) {
1192 p = el->el_term.t_str[arrow[i].key];
1193 if (p && *p) {
1194 j = (unsigned char) *p;
1195 /*
1196 * Assign the arrow keys only if:
1197 *
1198 * 1. They are multi-character arrow keys and the user
1199 * has not re-assigned the leading character, or
1200 * has re-assigned the leading character to be
1201 * ED_SEQUENCE_LEAD_IN
1202 * 2. They are single arrow keys pointing to an
1203 * unassigned key.
1204 */
1205 if (arrow[i].type == XK_NOD)
1206 key_clear(el, map, p);
1207 else {
1208 if (p[1] && (dmap[j] == map[j] ||
1209 map[j] == ED_SEQUENCE_LEAD_IN)) {
1210 key_add(el, p, &arrow[i].fun,
1211 arrow[i].type);
1212 map[j] = ED_SEQUENCE_LEAD_IN;
1213 } else if (map[j] == ED_UNASSIGNED) {
1214 key_clear(el, map, p);
1215 if (arrow[i].type == XK_CMD)
1216 map[j] = arrow[i].fun.cmd;
1217 else
1218 key_add(el, p, &arrow[i].fun,
1219 arrow[i].type);
1220 }
1221 }
1222 }
1223 }
1224 }
1225
1226
1227 /* term__putc():
1228 * Add a character
1229 */
1230 protected int
term__putc(int c)1231 term__putc(int c)
1232 {
1233
1234 return (fputc(c, term_outfile));
1235 }
1236
1237
1238 /* term__flush():
1239 * Flush output
1240 */
1241 protected void
term__flush(void)1242 term__flush(void)
1243 {
1244
1245 (void) fflush(term_outfile);
1246 }
1247
1248
1249 /* term_telltc():
1250 * Print the current termcap characteristics
1251 */
1252 protected int
1253 /*ARGSUSED*/
term_telltc(EditLine * el,int argc,const char ** argv)1254 term_telltc(EditLine *el, int argc __attribute__((__unused__)),
1255 const char **argv __attribute__((__unused__)))
1256 {
1257 const struct termcapstr *t;
1258 char **ts;
1259 char upbuf[EL_BUFSIZ];
1260
1261 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1262 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1263 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1264 Val(T_co), Val(T_li));
1265 (void) fprintf(el->el_outfile,
1266 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1267 (void) fprintf(el->el_outfile,
1268 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1269 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1270 EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1271 if (EL_HAS_AUTO_MARGINS)
1272 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1273 EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1274
1275 for (t = tstr, ts = el->el_term.t_str; t->name != NULL; t++, ts++)
1276 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1277 t->long_name,
1278 t->name, *ts && **ts ?
1279 key__decode_str(*ts, upbuf, "") : "(empty)");
1280 (void) fputc('\n', el->el_outfile);
1281 return (0);
1282 }
1283
1284
1285 /* term_settc():
1286 * Change the current terminal characteristics
1287 */
1288 protected int
1289 /*ARGSUSED*/
term_settc(EditLine * el,int argc,const char ** argv)1290 term_settc(EditLine *el, int argc __attribute__((__unused__)),
1291 const char **argv)
1292 {
1293 const struct termcapstr *ts;
1294 const struct termcapval *tv;
1295 const char *what, *how;
1296
1297 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1298 return (-1);
1299
1300 what = argv[1];
1301 how = argv[2];
1302
1303 /*
1304 * Do the strings first
1305 */
1306 for (ts = tstr; ts->name != NULL; ts++)
1307 if (strcmp(ts->name, what) == 0)
1308 break;
1309
1310 if (ts->name != NULL) {
1311 term_alloc(el, ts, how);
1312 term_setflags(el);
1313 return (0);
1314 }
1315 /*
1316 * Do the numeric ones second
1317 */
1318 for (tv = tval; tv->name != NULL; tv++)
1319 if (strcmp(tv->name, what) == 0)
1320 break;
1321
1322 if (tv->name != NULL) {
1323 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1324 tv == &tval[T_am] || tv == &tval[T_xn]) {
1325 if (strcmp(how, "yes") == 0)
1326 el->el_term.t_val[tv - tval] = 1;
1327 else if (strcmp(how, "no") == 0)
1328 el->el_term.t_val[tv - tval] = 0;
1329 else {
1330 (void) fprintf(el->el_errfile,
1331 "settc: Bad value `%s'.\n", how);
1332 return (-1);
1333 }
1334 term_setflags(el);
1335 if (term_change_size(el, Val(T_li), Val(T_co)) == -1)
1336 return (-1);
1337 return (0);
1338 } else {
1339 long i;
1340 char *ep;
1341
1342 i = strtol(how, &ep, 10);
1343 if (*ep != '\0') {
1344 (void) fprintf(el->el_errfile,
1345 "settc: Bad value `%s'.\n", how);
1346 return (-1);
1347 }
1348 el->el_term.t_val[tv - tval] = (int) i;
1349 el->el_term.t_size.v = Val(T_co);
1350 el->el_term.t_size.h = Val(T_li);
1351 if (tv == &tval[T_co] || tv == &tval[T_li])
1352 if (term_change_size(el, Val(T_li), Val(T_co))
1353 == -1)
1354 return (-1);
1355 return (0);
1356 }
1357 }
1358 return (-1);
1359 }
1360
1361
1362 /* term_echotc():
1363 * Print the termcap string out with variable substitution
1364 */
1365 protected int
1366 /*ARGSUSED*/
term_echotc(EditLine * el,int argc,const char ** argv)1367 term_echotc(EditLine *el, int argc __attribute__((__unused__)),
1368 const char **argv)
1369 {
1370 char *cap, *scap, *ep;
1371 int arg_need, arg_cols, arg_rows;
1372 int verbose = 0, silent = 0;
1373 char *area;
1374 static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1375 const struct termcapstr *t;
1376 char buf[TC_BUFSIZE];
1377 long i;
1378
1379 area = buf;
1380
1381 if (argv == NULL || argv[1] == NULL)
1382 return (-1);
1383 argv++;
1384
1385 if (argv[0][0] == '-') {
1386 switch (argv[0][1]) {
1387 case 'v':
1388 verbose = 1;
1389 break;
1390 case 's':
1391 silent = 1;
1392 break;
1393 default:
1394 /* stderror(ERR_NAME | ERR_TCUSAGE); */
1395 break;
1396 }
1397 argv++;
1398 }
1399 if (!*argv || *argv[0] == '\0')
1400 return (0);
1401 if (strcmp(*argv, "tabs") == 0) {
1402 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1403 return (0);
1404 } else if (strcmp(*argv, "meta") == 0) {
1405 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1406 return (0);
1407 } else if (strcmp(*argv, "xn") == 0) {
1408 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1409 "yes" : "no");
1410 return (0);
1411 } else if (strcmp(*argv, "am") == 0) {
1412 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1413 "yes" : "no");
1414 return (0);
1415 } else if (strcmp(*argv, "baud") == 0) {
1416 #ifdef notdef
1417 int i;
1418
1419 for (i = 0; baud_rate[i].b_name != NULL; i++)
1420 if (el->el_tty.t_speed == baud_rate[i].b_rate) {
1421 (void) fprintf(el->el_outfile, fmts,
1422 baud_rate[i].b_name);
1423 return (0);
1424 }
1425 (void) fprintf(el->el_outfile, fmtd, 0);
1426 #else
1427 (void) fprintf(el->el_outfile, fmtd, el->el_tty.t_speed);
1428 #endif
1429 return (0);
1430 } else if (strcmp(*argv, "rows") == 0 || strcmp(*argv, "lines") == 0) {
1431 (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1432 return (0);
1433 } else if (strcmp(*argv, "cols") == 0) {
1434 (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1435 return (0);
1436 }
1437 /*
1438 * Try to use our local definition first
1439 */
1440 scap = NULL;
1441 for (t = tstr; t->name != NULL; t++)
1442 if (strcmp(t->name, *argv) == 0) {
1443 scap = el->el_term.t_str[t - tstr];
1444 break;
1445 }
1446 if (t->name == NULL)
1447 scap = tgetstr((char *)*argv, &area);
1448 if (!scap || scap[0] == '\0') {
1449 if (!silent)
1450 (void) fprintf(el->el_errfile,
1451 "echotc: Termcap parameter `%s' not found.\n",
1452 *argv);
1453 return (-1);
1454 }
1455 /*
1456 * Count home many values we need for this capability.
1457 */
1458 for (cap = scap, arg_need = 0; *cap; cap++)
1459 if (*cap == '%')
1460 switch (*++cap) {
1461 case 'd':
1462 case '2':
1463 case '3':
1464 case '.':
1465 case '+':
1466 arg_need++;
1467 break;
1468 case '%':
1469 case '>':
1470 case 'i':
1471 case 'r':
1472 case 'n':
1473 case 'B':
1474 case 'D':
1475 break;
1476 default:
1477 /*
1478 * hpux has lot's of them...
1479 */
1480 if (verbose)
1481 (void) fprintf(el->el_errfile,
1482 "echotc: Warning: unknown termcap %% `%c'.\n",
1483 *cap);
1484 /* This is bad, but I won't complain */
1485 break;
1486 }
1487
1488 switch (arg_need) {
1489 case 0:
1490 argv++;
1491 if (*argv && *argv[0]) {
1492 if (!silent)
1493 (void) fprintf(el->el_errfile,
1494 "echotc: Warning: Extra argument `%s'.\n",
1495 *argv);
1496 return (-1);
1497 }
1498 (void) tputs(scap, 1, term__putc);
1499 break;
1500 case 1:
1501 argv++;
1502 if (!*argv || *argv[0] == '\0') {
1503 if (!silent)
1504 (void) fprintf(el->el_errfile,
1505 "echotc: Warning: Missing argument.\n");
1506 return (-1);
1507 }
1508 arg_cols = 0;
1509 i = strtol(*argv, &ep, 10);
1510 if (*ep != '\0' || i < 0) {
1511 if (!silent)
1512 (void) fprintf(el->el_errfile,
1513 "echotc: Bad value `%s' for rows.\n",
1514 *argv);
1515 return (-1);
1516 }
1517 arg_rows = (int) i;
1518 argv++;
1519 if (*argv && *argv[0]) {
1520 if (!silent)
1521 (void) fprintf(el->el_errfile,
1522 "echotc: Warning: Extra argument `%s'.\n",
1523 *argv);
1524 return (-1);
1525 }
1526 (void) tputs(tgoto(scap, arg_cols, arg_rows), 1, term__putc);
1527 break;
1528 default:
1529 /* This is wrong, but I will ignore it... */
1530 if (verbose)
1531 (void) fprintf(el->el_errfile,
1532 "echotc: Warning: Too many required arguments (%d).\n",
1533 arg_need);
1534 /* FALLTHROUGH */
1535 case 2:
1536 argv++;
1537 if (!*argv || *argv[0] == '\0') {
1538 if (!silent)
1539 (void) fprintf(el->el_errfile,
1540 "echotc: Warning: Missing argument.\n");
1541 return (-1);
1542 }
1543 i = strtol(*argv, &ep, 10);
1544 if (*ep != '\0' || i < 0) {
1545 if (!silent)
1546 (void) fprintf(el->el_errfile,
1547 "echotc: Bad value `%s' for cols.\n",
1548 *argv);
1549 return (-1);
1550 }
1551 arg_cols = (int) i;
1552 argv++;
1553 if (!*argv || *argv[0] == '\0') {
1554 if (!silent)
1555 (void) fprintf(el->el_errfile,
1556 "echotc: Warning: Missing argument.\n");
1557 return (-1);
1558 }
1559 i = strtol(*argv, &ep, 10);
1560 if (*ep != '\0' || i < 0) {
1561 if (!silent)
1562 (void) fprintf(el->el_errfile,
1563 "echotc: Bad value `%s' for rows.\n",
1564 *argv);
1565 return (-1);
1566 }
1567 arg_rows = (int) i;
1568 if (*ep != '\0') {
1569 if (!silent)
1570 (void) fprintf(el->el_errfile,
1571 "echotc: Bad value `%s'.\n", *argv);
1572 return (-1);
1573 }
1574 argv++;
1575 if (*argv && *argv[0]) {
1576 if (!silent)
1577 (void) fprintf(el->el_errfile,
1578 "echotc: Warning: Extra argument `%s'.\n",
1579 *argv);
1580 return (-1);
1581 }
1582 (void) tputs(tgoto(scap, arg_cols, arg_rows), arg_rows,
1583 term__putc);
1584 break;
1585 }
1586 return (0);
1587 }
1588
1589 /* Internal Interface - for readline wrapper only */
1590
1591 void
_rl__term_get_size(EditLine * el,int * lines,int * columns)1592 _rl__term_get_size(EditLine *el, int *lines, int *columns)
1593 {
1594 (void) term_get_size(el, lines, columns);
1595 }
1596
1597 void
_rl__term_change_size(EditLine * el,int lines,int columns)1598 _rl__term_change_size(EditLine *el, int lines, int columns)
1599 {
1600 (void) term_change_size(el, lines, columns);
1601 }
1602