1 /*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Christos Zoulas of Cornell University.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $NetBSD: term.c,v 1.56 2009/12/28 21:54:21 christos Exp $
33 */
34
35 #if !defined(lint) && !defined(SCCSID)
36 static char sccsid[] = "@(#)term.c 8.2 (Berkeley) 4/30/95";
37 #endif /* not lint && not SCCSID */
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD: stable/9/lib/libedit/term.c 237738 2012-06-29 03:01:38Z pfg $");
40
41 /*
42 * term.c: Editor/termcap-curses interface
43 * We have to declare a static variable here, since the
44 * termcap putchar routine does not take an argument!
45 */
46 #include <stdio.h>
47 #include <signal.h>
48 #include <string.h>
49 #include <stdlib.h>
50 #include <unistd.h>
51 #include <termcap.h>
52 #include <curses.h>
53 #include <ncurses.h>
54 #include <term.h>
55 #include <sys/types.h>
56 #include <sys/ioctl.h>
57
58 #include "el.h"
59
60 /*
61 * IMPORTANT NOTE: these routines are allowed to look at the current screen
62 * and the current possition assuming that it is correct. If this is not
63 * true, then the update will be WRONG! This is (should be) a valid
64 * assumption...
65 */
66
67 #define TC_BUFSIZE 2048
68
69 #define GoodStr(a) (el->el_term.t_str[a] != NULL && \
70 el->el_term.t_str[a][0] != '\0')
71 #define Str(a) el->el_term.t_str[a]
72 #define Val(a) el->el_term.t_val[a]
73
74 #ifdef notdef
75 private const struct {
76 const char *b_name;
77 int b_rate;
78 } baud_rate[] = {
79 #ifdef B0
80 { "0", B0 },
81 #endif
82 #ifdef B50
83 { "50", B50 },
84 #endif
85 #ifdef B75
86 { "75", B75 },
87 #endif
88 #ifdef B110
89 { "110", B110 },
90 #endif
91 #ifdef B134
92 { "134", B134 },
93 #endif
94 #ifdef B150
95 { "150", B150 },
96 #endif
97 #ifdef B200
98 { "200", B200 },
99 #endif
100 #ifdef B300
101 { "300", B300 },
102 #endif
103 #ifdef B600
104 { "600", B600 },
105 #endif
106 #ifdef B900
107 { "900", B900 },
108 #endif
109 #ifdef B1200
110 { "1200", B1200 },
111 #endif
112 #ifdef B1800
113 { "1800", B1800 },
114 #endif
115 #ifdef B2400
116 { "2400", B2400 },
117 #endif
118 #ifdef B3600
119 { "3600", B3600 },
120 #endif
121 #ifdef B4800
122 { "4800", B4800 },
123 #endif
124 #ifdef B7200
125 { "7200", B7200 },
126 #endif
127 #ifdef B9600
128 { "9600", B9600 },
129 #endif
130 #ifdef EXTA
131 { "19200", EXTA },
132 #endif
133 #ifdef B19200
134 { "19200", B19200 },
135 #endif
136 #ifdef EXTB
137 { "38400", EXTB },
138 #endif
139 #ifdef B38400
140 { "38400", B38400 },
141 #endif
142 { NULL, 0 }
143 };
144 #endif
145
146 private const struct termcapstr {
147 const char *name;
148 const char *long_name;
149 } tstr[] = {
150 #define T_al 0
151 { "al", "add new blank line" },
152 #define T_bl 1
153 { "bl", "audible bell" },
154 #define T_cd 2
155 { "cd", "clear to bottom" },
156 #define T_ce 3
157 { "ce", "clear to end of line" },
158 #define T_ch 4
159 { "ch", "cursor to horiz pos" },
160 #define T_cl 5
161 { "cl", "clear screen" },
162 #define T_dc 6
163 { "dc", "delete a character" },
164 #define T_dl 7
165 { "dl", "delete a line" },
166 #define T_dm 8
167 { "dm", "start delete mode" },
168 #define T_ed 9
169 { "ed", "end delete mode" },
170 #define T_ei 10
171 { "ei", "end insert mode" },
172 #define T_fs 11
173 { "fs", "cursor from status line" },
174 #define T_ho 12
175 { "ho", "home cursor" },
176 #define T_ic 13
177 { "ic", "insert character" },
178 #define T_im 14
179 { "im", "start insert mode" },
180 #define T_ip 15
181 { "ip", "insert padding" },
182 #define T_kd 16
183 { "kd", "sends cursor down" },
184 #define T_kl 17
185 { "kl", "sends cursor left" },
186 #define T_kr 18
187 { "kr", "sends cursor right" },
188 #define T_ku 19
189 { "ku", "sends cursor up" },
190 #define T_md 20
191 { "md", "begin bold" },
192 #define T_me 21
193 { "me", "end attributes" },
194 #define T_nd 22
195 { "nd", "non destructive space" },
196 #define T_se 23
197 { "se", "end standout" },
198 #define T_so 24
199 { "so", "begin standout" },
200 #define T_ts 25
201 { "ts", "cursor to status line" },
202 #define T_up 26
203 { "up", "cursor up one" },
204 #define T_us 27
205 { "us", "begin underline" },
206 #define T_ue 28
207 { "ue", "end underline" },
208 #define T_vb 29
209 { "vb", "visible bell" },
210 #define T_DC 30
211 { "DC", "delete multiple chars" },
212 #define T_DO 31
213 { "DO", "cursor down multiple" },
214 #define T_IC 32
215 { "IC", "insert multiple chars" },
216 #define T_LE 33
217 { "LE", "cursor left multiple" },
218 #define T_RI 34
219 { "RI", "cursor right multiple" },
220 #define T_UP 35
221 { "UP", "cursor up multiple" },
222 #define T_kh 36
223 { "kh", "send cursor home" },
224 #define T_at7 37
225 { "@7", "send cursor end" },
226 #define T_kD 38
227 { "kD", "send cursor delete" },
228 #define T_str 39
229 { NULL, NULL }
230 };
231
232 private const struct termcapval {
233 const char *name;
234 const char *long_name;
235 } tval[] = {
236 #define T_am 0
237 { "am", "has automatic margins" },
238 #define T_pt 1
239 { "pt", "has physical tabs" },
240 #define T_li 2
241 { "li", "Number of lines" },
242 #define T_co 3
243 { "co", "Number of columns" },
244 #define T_km 4
245 { "km", "Has meta key" },
246 #define T_xt 5
247 { "xt", "Tab chars destructive" },
248 #define T_xn 6
249 { "xn", "newline ignored at right margin" },
250 #define T_MT 7
251 { "MT", "Has meta key" }, /* XXX? */
252 #define T_val 8
253 { NULL, NULL, }
254 };
255 /* do two or more of the attributes use me */
256
257 private void term_setflags(EditLine *);
258 private int term_rebuffer_display(EditLine *);
259 private void term_free_display(EditLine *);
260 private int term_alloc_display(EditLine *);
261 private void term_alloc(EditLine *, const struct termcapstr *, const char *);
262 private void term_init_arrow(EditLine *);
263 private void term_reset_arrow(EditLine *);
264 private int term_putc(int);
265 private void term_tputs(EditLine *, const char *, int);
266
267 #ifdef _REENTRANT
268 private pthread_mutex_t term_mutex = PTHREAD_MUTEX_INITIALIZER;
269 #endif
270 private FILE *term_outfile = NULL;
271
272
273 /* term_setflags():
274 * Set the terminal capability flags
275 */
276 private void
term_setflags(EditLine * el)277 term_setflags(EditLine *el)
278 {
279 EL_FLAGS = 0;
280 if (el->el_tty.t_tabs)
281 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
282
283 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
284 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
285 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
286 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
287 TERM_CAN_INSERT : 0;
288 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
289 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
290 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
291
292 if (GoodStr(T_me) && GoodStr(T_ue))
293 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
294 TERM_CAN_ME : 0;
295 else
296 EL_FLAGS &= ~TERM_CAN_ME;
297 if (GoodStr(T_me) && GoodStr(T_se))
298 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
299 TERM_CAN_ME : 0;
300
301
302 #ifdef DEBUG_SCREEN
303 if (!EL_CAN_UP) {
304 (void) fprintf(el->el_errfile,
305 "WARNING: Your terminal cannot move up.\n");
306 (void) fprintf(el->el_errfile,
307 "Editing may be odd for long lines.\n");
308 }
309 if (!EL_CAN_CEOL)
310 (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
311 if (!EL_CAN_DELETE)
312 (void) fprintf(el->el_errfile, "no delete char capability.\n");
313 if (!EL_CAN_INSERT)
314 (void) fprintf(el->el_errfile, "no insert char capability.\n");
315 #endif /* DEBUG_SCREEN */
316 }
317
318 /* term_init():
319 * Initialize the terminal stuff
320 */
321 protected int
term_init(EditLine * el)322 term_init(EditLine *el)
323 {
324
325 el->el_term.t_buf = (char *) el_malloc(TC_BUFSIZE);
326 if (el->el_term.t_buf == NULL)
327 return (-1);
328 el->el_term.t_cap = (char *) el_malloc(TC_BUFSIZE);
329 if (el->el_term.t_cap == NULL)
330 return (-1);
331 el->el_term.t_fkey = (fkey_t *) el_malloc(A_K_NKEYS * sizeof(fkey_t));
332 if (el->el_term.t_fkey == NULL)
333 return (-1);
334 el->el_term.t_loc = 0;
335 el->el_term.t_str = (char **) el_malloc(T_str * sizeof(char *));
336 if (el->el_term.t_str == NULL)
337 return (-1);
338 (void) memset(el->el_term.t_str, 0, T_str * sizeof(char *));
339 el->el_term.t_val = (int *) el_malloc(T_val * sizeof(int));
340 if (el->el_term.t_val == NULL)
341 return (-1);
342 (void) memset(el->el_term.t_val, 0, T_val * sizeof(int));
343 term_init_arrow(el);
344 (void) term_set(el, NULL);
345 return (0);
346 }
347
348 /* term_end():
349 * Clean up the terminal stuff
350 */
351 protected void
term_end(EditLine * el)352 term_end(EditLine *el)
353 {
354
355 el_free((ptr_t) el->el_term.t_buf);
356 el->el_term.t_buf = NULL;
357 el_free((ptr_t) el->el_term.t_cap);
358 el->el_term.t_cap = NULL;
359 el->el_term.t_loc = 0;
360 el_free((ptr_t) el->el_term.t_str);
361 el->el_term.t_str = NULL;
362 el_free((ptr_t) el->el_term.t_val);
363 el->el_term.t_val = NULL;
364 el_free((ptr_t) el->el_term.t_fkey);
365 el->el_term.t_fkey = NULL;
366 term_free_display(el);
367 }
368
369
370 /* term_alloc():
371 * Maintain a string pool for termcap strings
372 */
373 private void
term_alloc(EditLine * el,const struct termcapstr * t,const char * cap)374 term_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
375 {
376 char termbuf[TC_BUFSIZE];
377 size_t tlen, clen;
378 char **tlist = el->el_term.t_str;
379 char **tmp, **str = &tlist[t - tstr];
380
381 if (cap == NULL || *cap == '\0') {
382 *str = NULL;
383 return;
384 } else
385 clen = strlen(cap);
386
387 tlen = *str == NULL ? 0 : strlen(*str);
388
389 /*
390 * New string is shorter; no need to allocate space
391 */
392 if (clen <= tlen) {
393 if (*str)
394 (void) strcpy(*str, cap); /* XXX strcpy is safe */
395 return;
396 }
397 /*
398 * New string is longer; see if we have enough space to append
399 */
400 if (el->el_term.t_loc + 3 < TC_BUFSIZE) {
401 /* XXX strcpy is safe */
402 (void) strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc],
403 cap);
404 el->el_term.t_loc += (int)clen + 1; /* one for \0 */
405 return;
406 }
407 /*
408 * Compact our buffer; no need to check compaction, cause we know it
409 * fits...
410 */
411 tlen = 0;
412 for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
413 if (*tmp != NULL && *tmp != '\0' && *tmp != *str) {
414 char *ptr;
415
416 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
417 continue;
418 termbuf[tlen++] = '\0';
419 }
420 memcpy(el->el_term.t_buf, termbuf, TC_BUFSIZE);
421 el->el_term.t_loc = (int)tlen;
422 if (el->el_term.t_loc + 3 >= TC_BUFSIZE) {
423 (void) fprintf(el->el_errfile,
424 "Out of termcap string space.\n");
425 return;
426 }
427 /* XXX strcpy is safe */
428 (void) strcpy(*str = &el->el_term.t_buf[el->el_term.t_loc], cap);
429 el->el_term.t_loc += (int)clen + 1; /* one for \0 */
430 return;
431 }
432
433
434 /* term_rebuffer_display():
435 * Rebuffer the display after the screen changed size
436 */
437 private int
term_rebuffer_display(EditLine * el)438 term_rebuffer_display(EditLine *el)
439 {
440 coord_t *c = &el->el_term.t_size;
441
442 term_free_display(el);
443
444 c->h = Val(T_co);
445 c->v = Val(T_li);
446
447 if (term_alloc_display(el) == -1)
448 return (-1);
449 return (0);
450 }
451
452
453 /* term_alloc_display():
454 * Allocate a new display.
455 */
456 private int
term_alloc_display(EditLine * el)457 term_alloc_display(EditLine *el)
458 {
459 int i;
460 char **b;
461 coord_t *c = &el->el_term.t_size;
462
463 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
464 if (b == NULL)
465 return (-1);
466 for (i = 0; i < c->v; i++) {
467 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
468 if (b[i] == NULL) {
469 while (--i >= 0)
470 el_free((ptr_t) b[i]);
471 el_free((ptr_t) b);
472 return (-1);
473 }
474 }
475 b[c->v] = NULL;
476 el->el_display = b;
477
478 b = (char **) el_malloc((size_t) (sizeof(char *) * (c->v + 1)));
479 if (b == NULL)
480 return (-1);
481 for (i = 0; i < c->v; i++) {
482 b[i] = (char *) el_malloc((size_t) (sizeof(char) * (c->h + 1)));
483 if (b[i] == NULL) {
484 while (--i >= 0)
485 el_free((ptr_t) b[i]);
486 el_free((ptr_t) b);
487 return (-1);
488 }
489 }
490 b[c->v] = NULL;
491 el->el_vdisplay = b;
492 return (0);
493 }
494
495
496 /* term_free_display():
497 * Free the display buffers
498 */
499 private void
term_free_display(EditLine * el)500 term_free_display(EditLine *el)
501 {
502 char **b;
503 char **bufp;
504
505 b = el->el_display;
506 el->el_display = NULL;
507 if (b != NULL) {
508 for (bufp = b; *bufp != NULL; bufp++)
509 el_free((ptr_t) * bufp);
510 el_free((ptr_t) b);
511 }
512 b = el->el_vdisplay;
513 el->el_vdisplay = NULL;
514 if (b != NULL) {
515 for (bufp = b; *bufp != NULL; bufp++)
516 el_free((ptr_t) * bufp);
517 el_free((ptr_t) b);
518 }
519 }
520
521
522 /* term_move_to_line():
523 * move to line <where> (first line == 0)
524 * as efficiently as possible
525 */
526 protected void
term_move_to_line(EditLine * el,int where)527 term_move_to_line(EditLine *el, int where)
528 {
529 int del;
530
531 if (where == el->el_cursor.v)
532 return;
533
534 if (where > el->el_term.t_size.v) {
535 #ifdef DEBUG_SCREEN
536 (void) fprintf(el->el_errfile,
537 "term_move_to_line: where is ridiculous: %d\r\n", where);
538 #endif /* DEBUG_SCREEN */
539 return;
540 }
541 if ((del = where - el->el_cursor.v) > 0) {
542 while (del > 0) {
543 if (EL_HAS_AUTO_MARGINS &&
544 el->el_display[el->el_cursor.v][0] != '\0') {
545 /* move without newline */
546 term_move_to_char(el, el->el_term.t_size.h - 1);
547 term_overwrite(el, &el->el_display
548 [el->el_cursor.v][el->el_cursor.h],
549 (size_t)(el->el_term.t_size.h -
550 el->el_cursor.h));
551 /* updates Cursor */
552 del--;
553 } else {
554 if ((del > 1) && GoodStr(T_DO)) {
555 term_tputs(el, tgoto(Str(T_DO), del,
556 del), del);
557 del = 0;
558 } else {
559 for (; del > 0; del--)
560 term__putc(el, '\n');
561 /* because the \n will become \r\n */
562 el->el_cursor.h = 0;
563 }
564 }
565 }
566 } else { /* del < 0 */
567 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
568 term_tputs(el, tgoto(Str(T_UP), -del, -del), -del);
569 else {
570 if (GoodStr(T_up))
571 for (; del < 0; del++)
572 term_tputs(el, Str(T_up), 1);
573 }
574 }
575 el->el_cursor.v = where;/* now where is here */
576 }
577
578
579 /* term_move_to_char():
580 * Move to the character position specified
581 */
582 protected void
term_move_to_char(EditLine * el,int where)583 term_move_to_char(EditLine *el, int where)
584 {
585 int del, i;
586
587 mc_again:
588 if (where == el->el_cursor.h)
589 return;
590
591 if (where > el->el_term.t_size.h) {
592 #ifdef DEBUG_SCREEN
593 (void) fprintf(el->el_errfile,
594 "term_move_to_char: where is riduculous: %d\r\n", where);
595 #endif /* DEBUG_SCREEN */
596 return;
597 }
598 if (!where) { /* if where is first column */
599 term__putc(el, '\r'); /* do a CR */
600 el->el_cursor.h = 0;
601 return;
602 }
603 del = where - el->el_cursor.h;
604
605 if ((del < -4 || del > 4) && GoodStr(T_ch))
606 /* go there directly */
607 term_tputs(el, tgoto(Str(T_ch), where, where), where);
608 else {
609 if (del > 0) { /* moving forward */
610 if ((del > 4) && GoodStr(T_RI))
611 term_tputs(el, tgoto(Str(T_RI), del, del), del);
612 else {
613 /* if I can do tabs, use them */
614 if (EL_CAN_TAB) {
615 if ((el->el_cursor.h & 0370) !=
616 (where & ~0x7)) {
617 /* if not within tab stop */
618 for (i =
619 (el->el_cursor.h & 0370);
620 i < (where & ~0x7);
621 i += 8)
622 term__putc(el, '\t');
623 /* then tab over */
624 el->el_cursor.h = where & ~0x7;
625 }
626 }
627 /*
628 * it's usually cheaper to just write the
629 * chars, so we do.
630 */
631 /*
632 * NOTE THAT term_overwrite() WILL CHANGE
633 * el->el_cursor.h!!!
634 */
635 term_overwrite(el, &el->el_display[
636 el->el_cursor.v][el->el_cursor.h],
637 (size_t)(where - el->el_cursor.h));
638
639 }
640 } else { /* del < 0 := moving backward */
641 if ((-del > 4) && GoodStr(T_LE))
642 term_tputs(el, tgoto(Str(T_LE), -del, -del),
643 -del);
644 else { /* can't go directly there */
645 /*
646 * if the "cost" is greater than the "cost"
647 * from col 0
648 */
649 if (EL_CAN_TAB ?
650 ((unsigned int)-del >
651 (((unsigned int) where >> 3) +
652 (where & 07)))
653 : (-del > where)) {
654 term__putc(el, '\r'); /* do a CR */
655 el->el_cursor.h = 0;
656 goto mc_again; /* and try again */
657 }
658 for (i = 0; i < -del; i++)
659 term__putc(el, '\b');
660 }
661 }
662 }
663 el->el_cursor.h = where; /* now where is here */
664 }
665
666
667 /* term_overwrite():
668 * Overstrike num characters
669 */
670 protected void
term_overwrite(EditLine * el,const char * cp,size_t n)671 term_overwrite(EditLine *el, const char *cp, size_t n)
672 {
673 if (n == 0)
674 return;
675
676 if (n > (size_t)el->el_term.t_size.h) {
677 #ifdef DEBUG_SCREEN
678 (void) fprintf(el->el_errfile,
679 "term_overwrite: n is riduculous: %d\r\n", n);
680 #endif /* DEBUG_SCREEN */
681 return;
682 }
683
684 do {
685 term__putc(el, *cp++);
686 el->el_cursor.h++;
687 } while (--n);
688
689 if (el->el_cursor.h >= el->el_term.t_size.h) { /* wrap? */
690 if (EL_HAS_AUTO_MARGINS) { /* yes */
691 el->el_cursor.h = 0;
692 el->el_cursor.v++;
693 if (EL_HAS_MAGIC_MARGINS) {
694 /* force the wrap to avoid the "magic"
695 * situation */
696 char c;
697 if ((c = el->el_display[el->el_cursor.v][el->el_cursor.h])
698 != '\0')
699 term_overwrite(el, &c, 1);
700 else {
701 term__putc(el, ' ');
702 el->el_cursor.h = 1;
703 }
704 }
705 } else /* no wrap, but cursor stays on screen */
706 el->el_cursor.h = el->el_term.t_size.h - 1;
707 }
708 }
709
710
711 /* term_deletechars():
712 * Delete num characters
713 */
714 protected void
term_deletechars(EditLine * el,int num)715 term_deletechars(EditLine *el, int num)
716 {
717 if (num <= 0)
718 return;
719
720 if (!EL_CAN_DELETE) {
721 #ifdef DEBUG_EDIT
722 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
723 #endif /* DEBUG_EDIT */
724 return;
725 }
726 if (num > el->el_term.t_size.h) {
727 #ifdef DEBUG_SCREEN
728 (void) fprintf(el->el_errfile,
729 "term_deletechars: num is riduculous: %d\r\n", num);
730 #endif /* DEBUG_SCREEN */
731 return;
732 }
733 if (GoodStr(T_DC)) /* if I have multiple delete */
734 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
735 * expen. */
736 term_tputs(el, tgoto(Str(T_DC), num, num), num);
737 return;
738 }
739 if (GoodStr(T_dm)) /* if I have delete mode */
740 term_tputs(el, Str(T_dm), 1);
741
742 if (GoodStr(T_dc)) /* else do one at a time */
743 while (num--)
744 term_tputs(el, Str(T_dc), 1);
745
746 if (GoodStr(T_ed)) /* if I have delete mode */
747 term_tputs(el, Str(T_ed), 1);
748 }
749
750
751 /* term_insertwrite():
752 * Puts terminal in insert character mode or inserts num
753 * characters in the line
754 */
755 protected void
term_insertwrite(EditLine * el,char * cp,int num)756 term_insertwrite(EditLine *el, char *cp, int num)
757 {
758 if (num <= 0)
759 return;
760 if (!EL_CAN_INSERT) {
761 #ifdef DEBUG_EDIT
762 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
763 #endif /* DEBUG_EDIT */
764 return;
765 }
766 if (num > el->el_term.t_size.h) {
767 #ifdef DEBUG_SCREEN
768 (void) fprintf(el->el_errfile,
769 "StartInsert: num is riduculous: %d\r\n", num);
770 #endif /* DEBUG_SCREEN */
771 return;
772 }
773 if (GoodStr(T_IC)) /* if I have multiple insert */
774 if ((num > 1) || !GoodStr(T_ic)) {
775 /* if ic would be more expensive */
776 term_tputs(el, tgoto(Str(T_IC), num, num), num);
777 term_overwrite(el, cp, (size_t)num);
778 /* this updates el_cursor.h */
779 return;
780 }
781 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
782 term_tputs(el, Str(T_im), 1);
783
784 el->el_cursor.h += num;
785 do
786 term__putc(el, *cp++);
787 while (--num);
788
789 if (GoodStr(T_ip)) /* have to make num chars insert */
790 term_tputs(el, Str(T_ip), 1);
791
792 term_tputs(el, Str(T_ei), 1);
793 return;
794 }
795 do {
796 if (GoodStr(T_ic)) /* have to make num chars insert */
797 term_tputs(el, Str(T_ic), 1);
798
799 term__putc(el, *cp++);
800
801 el->el_cursor.h++;
802
803 if (GoodStr(T_ip)) /* have to make num chars insert */
804 term_tputs(el, Str(T_ip), 1);
805 /* pad the inserted char */
806
807 } while (--num);
808 }
809
810
811 /* term_clear_EOL():
812 * clear to end of line. There are num characters to clear
813 */
814 protected void
term_clear_EOL(EditLine * el,int num)815 term_clear_EOL(EditLine *el, int num)
816 {
817 int i;
818
819 if (EL_CAN_CEOL && GoodStr(T_ce))
820 term_tputs(el, Str(T_ce), 1);
821 else {
822 for (i = 0; i < num; i++)
823 term__putc(el, ' ');
824 el->el_cursor.h += num; /* have written num spaces */
825 }
826 }
827
828
829 /* term_clear_screen():
830 * Clear the screen
831 */
832 protected void
term_clear_screen(EditLine * el)833 term_clear_screen(EditLine *el)
834 { /* clear the whole screen and home */
835
836 if (GoodStr(T_cl))
837 /* send the clear screen code */
838 term_tputs(el, Str(T_cl), Val(T_li));
839 else if (GoodStr(T_ho) && GoodStr(T_cd)) {
840 term_tputs(el, Str(T_ho), Val(T_li)); /* home */
841 /* clear to bottom of screen */
842 term_tputs(el, Str(T_cd), Val(T_li));
843 } else {
844 term__putc(el, '\r');
845 term__putc(el, '\n');
846 }
847 }
848
849
850 /* term_beep():
851 * Beep the way the terminal wants us
852 */
853 protected void
term_beep(EditLine * el)854 term_beep(EditLine *el)
855 {
856 if (GoodStr(T_bl))
857 /* what termcap says we should use */
858 term_tputs(el, Str(T_bl), 1);
859 else
860 term__putc(el, '\007'); /* an ASCII bell; ^G */
861 }
862
863
864 #ifdef notdef
865 /* term_clear_to_bottom():
866 * Clear to the bottom of the screen
867 */
868 protected void
term_clear_to_bottom(EditLine * el)869 term_clear_to_bottom(EditLine *el)
870 {
871 if (GoodStr(T_cd))
872 term_tputs(el, Str(T_cd), Val(T_li));
873 else if (GoodStr(T_ce))
874 term_tputs(el, Str(T_ce), Val(T_li));
875 }
876 #endif
877
878 protected void
term_get(EditLine * el,const char ** term)879 term_get(EditLine *el, const char **term)
880 {
881 *term = el->el_term.t_name;
882 }
883
884
885 /* term_set():
886 * Read in the terminal capabilities from the requested terminal
887 */
888 protected int
term_set(EditLine * el,const char * term)889 term_set(EditLine *el, const char *term)
890 {
891 int i;
892 char buf[TC_BUFSIZE];
893 char *area;
894 const struct termcapstr *t;
895 sigset_t oset, nset;
896 int lins, cols;
897
898 (void) sigemptyset(&nset);
899 (void) sigaddset(&nset, SIGWINCH);
900 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
901
902 area = buf;
903
904
905 if (term == NULL)
906 term = getenv("TERM");
907
908 if (!term || !term[0])
909 term = "dumb";
910
911 if (strcmp(term, "emacs") == 0)
912 el->el_flags |= EDIT_DISABLED;
913
914 memset(el->el_term.t_cap, 0, TC_BUFSIZE);
915
916 i = tgetent(el->el_term.t_cap, term);
917
918 if (i <= 0) {
919 if (i == -1)
920 (void) fprintf(el->el_errfile,
921 "Cannot read termcap database;\n");
922 else if (i == 0)
923 (void) fprintf(el->el_errfile,
924 "No entry for terminal type \"%s\";\n", term);
925 (void) fprintf(el->el_errfile,
926 "using dumb terminal settings.\n");
927 Val(T_co) = 80; /* do a dumb terminal */
928 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
929 Val(T_xt) = Val(T_MT);
930 for (t = tstr; t->name != NULL; t++)
931 term_alloc(el, t, NULL);
932 } else {
933 /* auto/magic margins */
934 Val(T_am) = tgetflag("am");
935 Val(T_xn) = tgetflag("xn");
936 /* Can we tab */
937 Val(T_pt) = tgetflag("pt");
938 Val(T_xt) = tgetflag("xt");
939 /* do we have a meta? */
940 Val(T_km) = tgetflag("km");
941 Val(T_MT) = tgetflag("MT");
942 /* Get the size */
943 Val(T_co) = tgetnum("co");
944 Val(T_li) = tgetnum("li");
945 for (t = tstr; t->name != NULL; t++) {
946 /* XXX: some systems' tgetstr needs non const */
947 term_alloc(el, t, tgetstr(strchr(t->name, *t->name),
948 &area));
949 }
950 }
951
952 if (Val(T_co) < 2)
953 Val(T_co) = 80; /* just in case */
954 if (Val(T_li) < 1)
955 Val(T_li) = 24;
956
957 el->el_term.t_size.v = Val(T_co);
958 el->el_term.t_size.h = Val(T_li);
959
960 term_setflags(el);
961
962 /* get the correct window size */
963 (void) term_get_size(el, &lins, &cols);
964 if (term_change_size(el, lins, cols) == -1)
965 return (-1);
966 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
967 term_bind_arrow(el);
968 el->el_term.t_name = term;
969 return (i <= 0 ? -1 : 0);
970 }
971
972
973 /* term_get_size():
974 * Return the new window size in lines and cols, and
975 * true if the size was changed.
976 */
977 protected int
term_get_size(EditLine * el,int * lins,int * cols)978 term_get_size(EditLine *el, int *lins, int *cols)
979 {
980
981 *cols = Val(T_co);
982 *lins = Val(T_li);
983
984 #ifdef TIOCGWINSZ
985 {
986 struct winsize ws;
987 if (ioctl(el->el_infd, TIOCGWINSZ, (ioctl_t) & ws) != -1) {
988 if (ws.ws_col)
989 *cols = ws.ws_col;
990 if (ws.ws_row)
991 *lins = ws.ws_row;
992 }
993 }
994 #endif
995 #ifdef TIOCGSIZE
996 {
997 struct ttysize ts;
998 if (ioctl(el->el_infd, TIOCGSIZE, (ioctl_t) & ts) != -1) {
999 if (ts.ts_cols)
1000 *cols = ts.ts_cols;
1001 if (ts.ts_lines)
1002 *lins = ts.ts_lines;
1003 }
1004 }
1005 #endif
1006 return (Val(T_co) != *cols || Val(T_li) != *lins);
1007 }
1008
1009
1010 /* term_change_size():
1011 * Change the size of the terminal
1012 */
1013 protected int
term_change_size(EditLine * el,int lins,int cols)1014 term_change_size(EditLine *el, int lins, int cols)
1015 {
1016 /*
1017 * Just in case
1018 */
1019 Val(T_co) = (cols < 2) ? 80 : cols;
1020 Val(T_li) = (lins < 1) ? 24 : lins;
1021
1022 /* re-make display buffers */
1023 if (term_rebuffer_display(el) == -1)
1024 return (-1);
1025 re_clear_display(el);
1026 return (0);
1027 }
1028
1029
1030 /* term_init_arrow():
1031 * Initialize the arrow key bindings from termcap
1032 */
1033 private void
term_init_arrow(EditLine * el)1034 term_init_arrow(EditLine *el)
1035 {
1036 fkey_t *arrow = el->el_term.t_fkey;
1037
1038 arrow[A_K_DN].name = "down";
1039 arrow[A_K_DN].key = T_kd;
1040 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
1041 arrow[A_K_DN].type = XK_CMD;
1042
1043 arrow[A_K_UP].name = "up";
1044 arrow[A_K_UP].key = T_ku;
1045 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
1046 arrow[A_K_UP].type = XK_CMD;
1047
1048 arrow[A_K_LT].name = "left";
1049 arrow[A_K_LT].key = T_kl;
1050 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1051 arrow[A_K_LT].type = XK_CMD;
1052
1053 arrow[A_K_RT].name = "right";
1054 arrow[A_K_RT].key = T_kr;
1055 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1056 arrow[A_K_RT].type = XK_CMD;
1057
1058 arrow[A_K_HO].name = "home";
1059 arrow[A_K_HO].key = T_kh;
1060 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1061 arrow[A_K_HO].type = XK_CMD;
1062
1063 arrow[A_K_EN].name = "end";
1064 arrow[A_K_EN].key = T_at7;
1065 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1066 arrow[A_K_EN].type = XK_CMD;
1067
1068 arrow[A_K_DE].name = "delete";
1069 arrow[A_K_DE].key = T_kD;
1070 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR;
1071 arrow[A_K_DE].type = XK_CMD;
1072 }
1073
1074
1075 /* term_reset_arrow():
1076 * Reset arrow key bindings
1077 */
1078 private void
term_reset_arrow(EditLine * el)1079 term_reset_arrow(EditLine *el)
1080 {
1081 fkey_t *arrow = el->el_term.t_fkey;
1082 static const char strA[] = {033, '[', 'A', '\0'};
1083 static const char strB[] = {033, '[', 'B', '\0'};
1084 static const char strC[] = {033, '[', 'C', '\0'};
1085 static const char strD[] = {033, '[', 'D', '\0'};
1086 static const char strH[] = {033, '[', 'H', '\0'};
1087 static const char strF[] = {033, '[', 'F', '\0'};
1088 static const char str1[] = {033, '[', '1', '~', '\0'};
1089 static const char str4[] = {033, '[', '4', '~', '\0'};
1090 static const char stOA[] = {033, 'O', 'A', '\0'};
1091 static const char stOB[] = {033, 'O', 'B', '\0'};
1092 static const char stOC[] = {033, 'O', 'C', '\0'};
1093 static const char stOD[] = {033, 'O', 'D', '\0'};
1094 static const char stOH[] = {033, 'O', 'H', '\0'};
1095 static const char stOF[] = {033, 'O', 'F', '\0'};
1096
1097 key_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1098 key_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1099 key_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1100 key_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1101 key_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1102 key_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1103 key_add(el, str1, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1104 key_add(el, str4, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1105 key_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1106 key_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1107 key_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1108 key_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1109 key_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1110 key_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1111
1112 if (el->el_map.type == MAP_VI) {
1113 key_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1114 key_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1115 key_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1116 key_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1117 key_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1118 key_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1119 key_add(el, &str1[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1120 key_add(el, &str4[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1121 key_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1122 key_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1123 key_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1124 key_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1125 key_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1126 key_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1127 }
1128 }
1129
1130
1131 /* term_set_arrow():
1132 * Set an arrow key binding
1133 */
1134 protected int
term_set_arrow(EditLine * el,const char * name,key_value_t * fun,int type)1135 term_set_arrow(EditLine *el, const char *name, key_value_t *fun, int type)
1136 {
1137 fkey_t *arrow = el->el_term.t_fkey;
1138 int i;
1139
1140 for (i = 0; i < A_K_NKEYS; i++)
1141 if (strcmp(name, arrow[i].name) == 0) {
1142 arrow[i].fun = *fun;
1143 arrow[i].type = type;
1144 return (0);
1145 }
1146 return (-1);
1147 }
1148
1149
1150 /* term_clear_arrow():
1151 * Clear an arrow key binding
1152 */
1153 protected int
term_clear_arrow(EditLine * el,const char * name)1154 term_clear_arrow(EditLine *el, const char *name)
1155 {
1156 fkey_t *arrow = el->el_term.t_fkey;
1157 int i;
1158
1159 for (i = 0; i < A_K_NKEYS; i++)
1160 if (strcmp(name, arrow[i].name) == 0) {
1161 arrow[i].type = XK_NOD;
1162 return (0);
1163 }
1164 return (-1);
1165 }
1166
1167
1168 /* term_print_arrow():
1169 * Print the arrow key bindings
1170 */
1171 protected void
term_print_arrow(EditLine * el,const char * name)1172 term_print_arrow(EditLine *el, const char *name)
1173 {
1174 int i;
1175 fkey_t *arrow = el->el_term.t_fkey;
1176
1177 for (i = 0; i < A_K_NKEYS; i++)
1178 if (*name == '\0' || strcmp(name, arrow[i].name) == 0)
1179 if (arrow[i].type != XK_NOD)
1180 key_kprint(el, arrow[i].name, &arrow[i].fun,
1181 arrow[i].type);
1182 }
1183
1184
1185 /* term_bind_arrow():
1186 * Bind the arrow keys
1187 */
1188 protected void
term_bind_arrow(EditLine * el)1189 term_bind_arrow(EditLine *el)
1190 {
1191 el_action_t *map;
1192 const el_action_t *dmap;
1193 int i, j;
1194 char *p;
1195 fkey_t *arrow = el->el_term.t_fkey;
1196
1197 /* Check if the components needed are initialized */
1198 if (el->el_term.t_buf == NULL || el->el_map.key == NULL)
1199 return;
1200
1201 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1202 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1203
1204 term_reset_arrow(el);
1205
1206 for (i = 0; i < A_K_NKEYS; i++) {
1207 p = el->el_term.t_str[arrow[i].key];
1208 if (p && *p) {
1209 j = (unsigned char) *p;
1210 /*
1211 * Assign the arrow keys only if:
1212 *
1213 * 1. They are multi-character arrow keys and the user
1214 * has not re-assigned the leading character, or
1215 * has re-assigned the leading character to be
1216 * ED_SEQUENCE_LEAD_IN
1217 * 2. They are single arrow keys pointing to an
1218 * unassigned key.
1219 */
1220 if (arrow[i].type == XK_NOD)
1221 key_clear(el, map, p);
1222 else {
1223 if (p[1] && (dmap[j] == map[j] ||
1224 map[j] == ED_SEQUENCE_LEAD_IN)) {
1225 key_add(el, p, &arrow[i].fun,
1226 arrow[i].type);
1227 map[j] = ED_SEQUENCE_LEAD_IN;
1228 } else if (map[j] == ED_UNASSIGNED) {
1229 key_clear(el, map, p);
1230 if (arrow[i].type == XK_CMD)
1231 map[j] = arrow[i].fun.cmd;
1232 else
1233 key_add(el, p, &arrow[i].fun,
1234 arrow[i].type);
1235 }
1236 }
1237 }
1238 }
1239 }
1240
1241 /* term_putc():
1242 * Add a character
1243 */
1244 private int
term_putc(int c)1245 term_putc(int c)
1246 {
1247
1248 if (term_outfile == NULL)
1249 return -1;
1250 return fputc(c, term_outfile);
1251 }
1252
1253 private void
term_tputs(EditLine * el,const char * cap,int affcnt)1254 term_tputs(EditLine *el, const char *cap, int affcnt)
1255 {
1256 #ifdef _REENTRANT
1257 pthread_mutex_lock(&term_mutex);
1258 #endif
1259 term_outfile = el->el_outfile;
1260 (void)tputs(cap, affcnt, term_putc);
1261 #ifdef _REENTRANT
1262 pthread_mutex_unlock(&term_mutex);
1263 #endif
1264 }
1265
1266 /* term__putc():
1267 * Add a character
1268 */
1269 protected int
term__putc(EditLine * el,int c)1270 term__putc(EditLine *el, int c)
1271 {
1272
1273 return fputc(c, el->el_outfile);
1274 }
1275
1276 /* term__flush():
1277 * Flush output
1278 */
1279 protected void
term__flush(EditLine * el)1280 term__flush(EditLine *el)
1281 {
1282
1283 (void) fflush(el->el_outfile);
1284 }
1285
1286 /* term_writec():
1287 * Write the given character out, in a human readable form
1288 */
1289 protected void
term_writec(EditLine * el,int c)1290 term_writec(EditLine *el, int c)
1291 {
1292 char buf[8];
1293 size_t cnt = key__decode_char(buf, sizeof(buf), 0, c);
1294 buf[cnt] = '\0';
1295 term_overwrite(el, buf, (size_t)cnt);
1296 term__flush(el);
1297 }
1298
1299
1300 /* term_telltc():
1301 * Print the current termcap characteristics
1302 */
1303 protected int
1304 /*ARGSUSED*/
term_telltc(EditLine * el,int argc __unused,const char ** argv __unused)1305 term_telltc(EditLine *el, int argc __unused,
1306 const char **argv __unused)
1307 {
1308 const struct termcapstr *t;
1309 char **ts;
1310 char upbuf[EL_BUFSIZ];
1311
1312 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1313 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1314 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1315 Val(T_co), Val(T_li));
1316 (void) fprintf(el->el_outfile,
1317 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1318 (void) fprintf(el->el_outfile,
1319 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1320 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1321 EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1322 if (EL_HAS_AUTO_MARGINS)
1323 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1324 EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1325
1326 for (t = tstr, ts = el->el_term.t_str; t->name != NULL; t++, ts++) {
1327 const char *ub;
1328 if (*ts && **ts) {
1329 (void) key__decode_str(*ts, upbuf, sizeof(upbuf), "");
1330 ub = upbuf;
1331 } else {
1332 ub = "(empty)";
1333 }
1334 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1335 t->long_name, t->name, ub);
1336 }
1337 (void) fputc('\n', el->el_outfile);
1338 return (0);
1339 }
1340
1341
1342 /* term_settc():
1343 * Change the current terminal characteristics
1344 */
1345 protected int
1346 /*ARGSUSED*/
term_settc(EditLine * el,int argc __unused,const char ** argv)1347 term_settc(EditLine *el, int argc __unused,
1348 const char **argv)
1349 {
1350 const struct termcapstr *ts;
1351 const struct termcapval *tv;
1352 const char *what, *how;
1353
1354 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1355 return -1;
1356
1357 what = argv[1];
1358 how = argv[2];
1359
1360 /*
1361 * Do the strings first
1362 */
1363 for (ts = tstr; ts->name != NULL; ts++)
1364 if (strcmp(ts->name, what) == 0)
1365 break;
1366
1367 if (ts->name != NULL) {
1368 term_alloc(el, ts, how);
1369 term_setflags(el);
1370 return 0;
1371 }
1372 /*
1373 * Do the numeric ones second
1374 */
1375 for (tv = tval; tv->name != NULL; tv++)
1376 if (strcmp(tv->name, what) == 0)
1377 break;
1378
1379 if (tv->name != NULL)
1380 return -1;
1381
1382 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1383 tv == &tval[T_am] || tv == &tval[T_xn]) {
1384 if (strcmp(how, "yes") == 0)
1385 el->el_term.t_val[tv - tval] = 1;
1386 else if (strcmp(how, "no") == 0)
1387 el->el_term.t_val[tv - tval] = 0;
1388 else {
1389 (void) fprintf(el->el_errfile,
1390 "%s: Bad value `%s'.\n", argv[0], how);
1391 return -1;
1392 }
1393 term_setflags(el);
1394 if (term_change_size(el, Val(T_li), Val(T_co)) == -1)
1395 return -1;
1396 return 0;
1397 } else {
1398 long i;
1399 char *ep;
1400
1401 i = strtol(how, &ep, 10);
1402 if (*ep != '\0') {
1403 (void) fprintf(el->el_errfile,
1404 "%s: Bad value `%s'.\n", argv[0], how);
1405 return -1;
1406 }
1407 el->el_term.t_val[tv - tval] = (int) i;
1408 el->el_term.t_size.v = Val(T_co);
1409 el->el_term.t_size.h = Val(T_li);
1410 if (tv == &tval[T_co] || tv == &tval[T_li])
1411 if (term_change_size(el, Val(T_li), Val(T_co))
1412 == -1)
1413 return -1;
1414 return 0;
1415 }
1416 }
1417
1418
1419 /* term_gettc():
1420 * Get the current terminal characteristics
1421 */
1422 protected int
1423 /*ARGSUSED*/
term_gettc(EditLine * el,int argc __unused,char ** argv)1424 term_gettc(EditLine *el, int argc __unused, char **argv)
1425 {
1426 const struct termcapstr *ts;
1427 const struct termcapval *tv;
1428 char *what;
1429 void *how;
1430
1431 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1432 return (-1);
1433
1434 what = argv[1];
1435 how = argv[2];
1436
1437 /*
1438 * Do the strings first
1439 */
1440 for (ts = tstr; ts->name != NULL; ts++)
1441 if (strcmp(ts->name, what) == 0)
1442 break;
1443
1444 if (ts->name != NULL) {
1445 *(char **)how = el->el_term.t_str[ts - tstr];
1446 return 0;
1447 }
1448 /*
1449 * Do the numeric ones second
1450 */
1451 for (tv = tval; tv->name != NULL; tv++)
1452 if (strcmp(tv->name, what) == 0)
1453 break;
1454
1455 if (tv->name == NULL)
1456 return -1;
1457
1458 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1459 tv == &tval[T_am] || tv == &tval[T_xn]) {
1460 static char yes[] = "yes";
1461 static char no[] = "no";
1462 if (el->el_term.t_val[tv - tval])
1463 *(char **)how = yes;
1464 else
1465 *(char **)how = no;
1466 return 0;
1467 } else {
1468 *(int *)how = el->el_term.t_val[tv - tval];
1469 return 0;
1470 }
1471 }
1472
1473 /* term_echotc():
1474 * Print the termcap string out with variable substitution
1475 */
1476 protected int
1477 /*ARGSUSED*/
term_echotc(EditLine * el,int argc __unused,const char ** argv)1478 term_echotc(EditLine *el, int argc __unused,
1479 const char **argv)
1480 {
1481 char *cap, *scap, *ep;
1482 int arg_need, arg_cols, arg_rows;
1483 int verbose = 0, silent = 0;
1484 char *area;
1485 static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1486 const struct termcapstr *t;
1487 char buf[TC_BUFSIZE];
1488 long i;
1489
1490 area = buf;
1491
1492 if (argv == NULL || argv[1] == NULL)
1493 return (-1);
1494 argv++;
1495
1496 if (argv[0][0] == '-') {
1497 switch (argv[0][1]) {
1498 case 'v':
1499 verbose = 1;
1500 break;
1501 case 's':
1502 silent = 1;
1503 break;
1504 default:
1505 /* stderror(ERR_NAME | ERR_TCUSAGE); */
1506 break;
1507 }
1508 argv++;
1509 }
1510 if (!*argv || *argv[0] == '\0')
1511 return (0);
1512 if (strcmp(*argv, "tabs") == 0) {
1513 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1514 return (0);
1515 } else if (strcmp(*argv, "meta") == 0) {
1516 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1517 return (0);
1518 } else if (strcmp(*argv, "xn") == 0) {
1519 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1520 "yes" : "no");
1521 return (0);
1522 } else if (strcmp(*argv, "am") == 0) {
1523 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1524 "yes" : "no");
1525 return (0);
1526 } else if (strcmp(*argv, "baud") == 0) {
1527 #ifdef notdef
1528 int i;
1529
1530 for (i = 0; baud_rate[i].b_name != NULL; i++)
1531 if (el->el_tty.t_speed == baud_rate[i].b_rate) {
1532 (void) fprintf(el->el_outfile, fmts,
1533 baud_rate[i].b_name);
1534 return (0);
1535 }
1536 (void) fprintf(el->el_outfile, fmtd, 0);
1537 #else
1538 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
1539 #endif
1540 return (0);
1541 } else if (strcmp(*argv, "rows") == 0 || strcmp(*argv, "lines") == 0) {
1542 (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1543 return (0);
1544 } else if (strcmp(*argv, "cols") == 0) {
1545 (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1546 return (0);
1547 }
1548 /*
1549 * Try to use our local definition first
1550 */
1551 scap = NULL;
1552 for (t = tstr; t->name != NULL; t++)
1553 if (strcmp(t->name, *argv) == 0) {
1554 scap = el->el_term.t_str[t - tstr];
1555 break;
1556 }
1557 if (t->name == NULL) {
1558 /* XXX: some systems' tgetstr needs non const */
1559 scap = tgetstr(strchr(*argv, **argv), &area);
1560 }
1561 if (!scap || scap[0] == '\0') {
1562 if (!silent)
1563 (void) fprintf(el->el_errfile,
1564 "echotc: Termcap parameter `%s' not found.\n",
1565 *argv);
1566 return (-1);
1567 }
1568 /*
1569 * Count home many values we need for this capability.
1570 */
1571 for (cap = scap, arg_need = 0; *cap; cap++)
1572 if (*cap == '%')
1573 switch (*++cap) {
1574 case 'd':
1575 case '2':
1576 case '3':
1577 case '.':
1578 case '+':
1579 arg_need++;
1580 break;
1581 case '%':
1582 case '>':
1583 case 'i':
1584 case 'r':
1585 case 'n':
1586 case 'B':
1587 case 'D':
1588 break;
1589 default:
1590 /*
1591 * hpux has lot's of them...
1592 */
1593 if (verbose)
1594 (void) fprintf(el->el_errfile,
1595 "echotc: Warning: unknown termcap %% `%c'.\n",
1596 *cap);
1597 /* This is bad, but I won't complain */
1598 break;
1599 }
1600
1601 switch (arg_need) {
1602 case 0:
1603 argv++;
1604 if (*argv && *argv[0]) {
1605 if (!silent)
1606 (void) fprintf(el->el_errfile,
1607 "echotc: Warning: Extra argument `%s'.\n",
1608 *argv);
1609 return (-1);
1610 }
1611 term_tputs(el, scap, 1);
1612 break;
1613 case 1:
1614 argv++;
1615 if (!*argv || *argv[0] == '\0') {
1616 if (!silent)
1617 (void) fprintf(el->el_errfile,
1618 "echotc: Warning: Missing argument.\n");
1619 return (-1);
1620 }
1621 arg_cols = 0;
1622 i = strtol(*argv, &ep, 10);
1623 if (*ep != '\0' || i < 0) {
1624 if (!silent)
1625 (void) fprintf(el->el_errfile,
1626 "echotc: Bad value `%s' for rows.\n",
1627 *argv);
1628 return (-1);
1629 }
1630 arg_rows = (int) i;
1631 argv++;
1632 if (*argv && *argv[0]) {
1633 if (!silent)
1634 (void) fprintf(el->el_errfile,
1635 "echotc: Warning: Extra argument `%s'.\n",
1636 *argv);
1637 return (-1);
1638 }
1639 term_tputs(el, tgoto(scap, arg_cols, arg_rows), 1);
1640 break;
1641 default:
1642 /* This is wrong, but I will ignore it... */
1643 if (verbose)
1644 (void) fprintf(el->el_errfile,
1645 "echotc: Warning: Too many required arguments (%d).\n",
1646 arg_need);
1647 /* FALLTHROUGH */
1648 case 2:
1649 argv++;
1650 if (!*argv || *argv[0] == '\0') {
1651 if (!silent)
1652 (void) fprintf(el->el_errfile,
1653 "echotc: Warning: Missing argument.\n");
1654 return (-1);
1655 }
1656 i = strtol(*argv, &ep, 10);
1657 if (*ep != '\0' || i < 0) {
1658 if (!silent)
1659 (void) fprintf(el->el_errfile,
1660 "echotc: Bad value `%s' for cols.\n",
1661 *argv);
1662 return (-1);
1663 }
1664 arg_cols = (int) i;
1665 argv++;
1666 if (!*argv || *argv[0] == '\0') {
1667 if (!silent)
1668 (void) fprintf(el->el_errfile,
1669 "echotc: Warning: Missing argument.\n");
1670 return (-1);
1671 }
1672 i = strtol(*argv, &ep, 10);
1673 if (*ep != '\0' || i < 0) {
1674 if (!silent)
1675 (void) fprintf(el->el_errfile,
1676 "echotc: Bad value `%s' for rows.\n",
1677 *argv);
1678 return (-1);
1679 }
1680 arg_rows = (int) i;
1681 if (*ep != '\0') {
1682 if (!silent)
1683 (void) fprintf(el->el_errfile,
1684 "echotc: Bad value `%s'.\n", *argv);
1685 return (-1);
1686 }
1687 argv++;
1688 if (*argv && *argv[0]) {
1689 if (!silent)
1690 (void) fprintf(el->el_errfile,
1691 "echotc: Warning: Extra argument `%s'.\n",
1692 *argv);
1693 return (-1);
1694 }
1695 term_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows);
1696 break;
1697 }
1698 return (0);
1699 }
1700