1 /* $NetBSD: terminal.c,v 1.46 2023/02/04 14:34:28 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 1.46 2023/02/04 14:34:28 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 <sys/types.h>
50 #include <sys/ioctl.h>
51 #include <limits.h>
52 #include <signal.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <unistd.h>
57 #ifdef HAVE_TERMCAP_H
58 #include <termcap.h>
59 #endif
60 #ifdef HAVE_CURSES_H
61 #include <curses.h>
62 #elif HAVE_NCURSES_H
63 #include <ncurses.h>
64 #endif
65
66 /* Solaris's term.h does horrid things. */
67 #if defined(HAVE_TERM_H) && !defined(__sun) && !defined(HAVE_TERMCAP_H)
68 #include <term.h>
69 #endif
70
71 #if defined(__sun)
72 extern int tgetent(char *, const char *);
73 extern int tgetflag(char *);
74 extern int tgetnum(char *);
75 extern int tputs(const char *, int, int (*)(int));
76 extern char* tgoto(const char*, int, int);
77 extern char* tgetstr(char*, char**);
78 #endif
79
80 #ifdef _REENTRANT
81 #include <pthread.h>
82 #endif
83
84 #include "el.h"
85 #include "fcns.h"
86
87 /*
88 * IMPORTANT NOTE: these routines are allowed to look at the current screen
89 * and the current position assuming that it is correct. If this is not
90 * true, then the update will be WRONG! This is (should be) a valid
91 * assumption...
92 */
93
94 #define TC_BUFSIZE ((size_t)2048)
95
96 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \
97 el->el_terminal.t_str[a][0] != '\0')
98 #define Str(a) el->el_terminal.t_str[a]
99 #define Val(a) el->el_terminal.t_val[a]
100
101 static const struct termcapstr {
102 const char *name;
103 const char *long_name;
104 } tstr[] = {
105 #define T_al 0
106 { "al", "add new blank line" },
107 #define T_bl 1
108 { "bl", "audible bell" },
109 #define T_cd 2
110 { "cd", "clear to bottom" },
111 #define T_ce 3
112 { "ce", "clear to end of line" },
113 #define T_ch 4
114 { "ch", "cursor to horiz pos" },
115 #define T_cl 5
116 { "cl", "clear screen" },
117 #define T_dc 6
118 { "dc", "delete a character" },
119 #define T_dl 7
120 { "dl", "delete a line" },
121 #define T_dm 8
122 { "dm", "start delete mode" },
123 #define T_ed 9
124 { "ed", "end delete mode" },
125 #define T_ei 10
126 { "ei", "end insert mode" },
127 #define T_fs 11
128 { "fs", "cursor from status line" },
129 #define T_ho 12
130 { "ho", "home cursor" },
131 #define T_ic 13
132 { "ic", "insert character" },
133 #define T_im 14
134 { "im", "start insert mode" },
135 #define T_ip 15
136 { "ip", "insert padding" },
137 #define T_kd 16
138 { "kd", "sends cursor down" },
139 #define T_kl 17
140 { "kl", "sends cursor left" },
141 #define T_kr 18
142 { "kr", "sends cursor right" },
143 #define T_ku 19
144 { "ku", "sends cursor up" },
145 #define T_md 20
146 { "md", "begin bold" },
147 #define T_me 21
148 { "me", "end attributes" },
149 #define T_nd 22
150 { "nd", "non destructive space" },
151 #define T_se 23
152 { "se", "end standout" },
153 #define T_so 24
154 { "so", "begin standout" },
155 #define T_ts 25
156 { "ts", "cursor to status line" },
157 #define T_up 26
158 { "up", "cursor up one" },
159 #define T_us 27
160 { "us", "begin underline" },
161 #define T_ue 28
162 { "ue", "end underline" },
163 #define T_vb 29
164 { "vb", "visible bell" },
165 #define T_DC 30
166 { "DC", "delete multiple chars" },
167 #define T_DO 31
168 { "DO", "cursor down multiple" },
169 #define T_IC 32
170 { "IC", "insert multiple chars" },
171 #define T_LE 33
172 { "LE", "cursor left multiple" },
173 #define T_RI 34
174 { "RI", "cursor right multiple" },
175 #define T_UP 35
176 { "UP", "cursor up multiple" },
177 #define T_kh 36
178 { "kh", "send cursor home" },
179 #define T_at7 37
180 { "@7", "send cursor end" },
181 #define T_kD 38
182 { "kD", "send cursor delete" },
183 #define T_str 39
184 { NULL, NULL }
185 };
186
187 static const struct termcapval {
188 const char *name;
189 const char *long_name;
190 } tval[] = {
191 #define T_am 0
192 { "am", "has automatic margins" },
193 #define T_pt 1
194 { "pt", "has physical tabs" },
195 #define T_li 2
196 { "li", "Number of lines" },
197 #define T_co 3
198 { "co", "Number of columns" },
199 #define T_km 4
200 { "km", "Has meta key" },
201 #define T_xt 5
202 { "xt", "Tab chars destructive" },
203 #define T_xn 6
204 { "xn", "newline ignored at right margin" },
205 #define T_MT 7
206 { "MT", "Has meta key" }, /* XXX? */
207 #define T_val 8
208 { NULL, NULL, }
209 };
210 /* do two or more of the attributes use me */
211
212 static void terminal_setflags(EditLine *);
213 static int terminal_rebuffer_display(EditLine *);
214 static void terminal_free_display(EditLine *);
215 static int terminal_alloc_display(EditLine *);
216 static void terminal_alloc(EditLine *, const struct termcapstr *,
217 const char *);
218 static void terminal_init_arrow(EditLine *);
219 static void terminal_reset_arrow(EditLine *);
220 static int terminal_putc(int);
221 static void terminal_tputs(EditLine *, const char *, int);
222
223 #ifdef _REENTRANT
224 static pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER;
225 #endif
226 static FILE *terminal_outfile = NULL;
227
228
229 /* terminal_setflags():
230 * Set the terminal capability flags
231 */
232 static void
terminal_setflags(EditLine * el)233 terminal_setflags(EditLine *el)
234 {
235 EL_FLAGS = 0;
236 if (el->el_tty.t_tabs)
237 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
238
239 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
240 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
241 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
242 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
243 TERM_CAN_INSERT : 0;
244 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
245 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
246 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
247
248 if (GoodStr(T_me) && GoodStr(T_ue))
249 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
250 TERM_CAN_ME : 0;
251 else
252 EL_FLAGS &= ~TERM_CAN_ME;
253 if (GoodStr(T_me) && GoodStr(T_se))
254 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
255 TERM_CAN_ME : 0;
256
257
258 #ifdef DEBUG_SCREEN
259 if (!EL_CAN_UP) {
260 (void) fprintf(el->el_errfile,
261 "WARNING: Your terminal cannot move up.\n");
262 (void) fprintf(el->el_errfile,
263 "Editing may be odd for long lines.\n");
264 }
265 if (!EL_CAN_CEOL)
266 (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
267 if (!EL_CAN_DELETE)
268 (void) fprintf(el->el_errfile, "no delete char capability.\n");
269 if (!EL_CAN_INSERT)
270 (void) fprintf(el->el_errfile, "no insert char capability.\n");
271 #endif /* DEBUG_SCREEN */
272 }
273
274 /* terminal_init():
275 * Initialize the terminal stuff
276 */
277 libedit_private int
terminal_init(EditLine * el)278 terminal_init(EditLine *el)
279 {
280
281 el->el_terminal.t_buf = el_calloc(TC_BUFSIZE,
282 sizeof(*el->el_terminal.t_buf));
283 if (el->el_terminal.t_buf == NULL)
284 return -1;
285 el->el_terminal.t_cap = el_calloc(TC_BUFSIZE,
286 sizeof(*el->el_terminal.t_cap));
287 if (el->el_terminal.t_cap == NULL)
288 goto out;
289 el->el_terminal.t_fkey = el_calloc(A_K_NKEYS,
290 sizeof(*el->el_terminal.t_fkey));
291 if (el->el_terminal.t_fkey == NULL)
292 goto out;
293 el->el_terminal.t_loc = 0;
294 el->el_terminal.t_str = el_calloc(T_str,
295 sizeof(*el->el_terminal.t_str));
296 if (el->el_terminal.t_str == NULL)
297 goto out;
298 el->el_terminal.t_val = el_calloc(T_val,
299 sizeof(*el->el_terminal.t_val));
300 if (el->el_terminal.t_val == NULL)
301 goto out;
302 (void) terminal_set(el, NULL);
303 terminal_init_arrow(el);
304 return 0;
305 out:
306 terminal_end(el);
307 return -1;
308 }
309
310 /* terminal_end():
311 * Clean up the terminal stuff
312 */
313 libedit_private void
terminal_end(EditLine * el)314 terminal_end(EditLine *el)
315 {
316
317 el_free(el->el_terminal.t_buf);
318 el->el_terminal.t_buf = NULL;
319 el_free(el->el_terminal.t_cap);
320 el->el_terminal.t_cap = NULL;
321 el->el_terminal.t_loc = 0;
322 el_free(el->el_terminal.t_str);
323 el->el_terminal.t_str = NULL;
324 el_free(el->el_terminal.t_val);
325 el->el_terminal.t_val = NULL;
326 el_free(el->el_terminal.t_fkey);
327 el->el_terminal.t_fkey = NULL;
328 terminal_free_display(el);
329 }
330
331
332 /* terminal_alloc():
333 * Maintain a string pool for termcap strings
334 */
335 static void
terminal_alloc(EditLine * el,const struct termcapstr * t,const char * cap)336 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
337 {
338 char termbuf[TC_BUFSIZE];
339 size_t tlen, clen;
340 char **tlist = el->el_terminal.t_str;
341 char **tmp, **str = &tlist[t - tstr];
342
343 (void) memset(termbuf, 0, sizeof(termbuf));
344 if (cap == NULL || *cap == '\0') {
345 *str = NULL;
346 return;
347 } else
348 clen = strlen(cap);
349
350 tlen = *str == NULL ? 0 : strlen(*str);
351
352 /*
353 * New string is shorter; no need to allocate space
354 */
355 if (clen <= tlen) {
356 if (*str)
357 (void) strcpy(*str, cap); /* XXX strcpy is safe */
358 return;
359 }
360 /*
361 * New string is longer; see if we have enough space to append
362 */
363 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) {
364 /* XXX strcpy is safe */
365 (void) strcpy(*str = &el->el_terminal.t_buf[
366 el->el_terminal.t_loc], cap);
367 el->el_terminal.t_loc += clen + 1; /* one for \0 */
368 return;
369 }
370 /*
371 * Compact our buffer; no need to check compaction, cause we know it
372 * fits...
373 */
374 tlen = 0;
375 for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
376 if (*tmp != NULL && **tmp != '\0' && *tmp != *str) {
377 char *ptr;
378
379 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
380 continue;
381 termbuf[tlen++] = '\0';
382 }
383 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE);
384 el->el_terminal.t_loc = tlen;
385 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) {
386 (void) fprintf(el->el_errfile,
387 "Out of termcap string space.\n");
388 return;
389 }
390 /* XXX strcpy is safe */
391 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc],
392 cap);
393 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */
394 return;
395 }
396
397
398 /* terminal_rebuffer_display():
399 * Rebuffer the display after the screen changed size
400 */
401 static int
terminal_rebuffer_display(EditLine * el)402 terminal_rebuffer_display(EditLine *el)
403 {
404 coord_t *c = &el->el_terminal.t_size;
405
406 terminal_free_display(el);
407
408 c->h = Val(T_co);
409 c->v = Val(T_li);
410
411 if (terminal_alloc_display(el) == -1)
412 return -1;
413 return 0;
414 }
415
416 static wint_t **
terminal_alloc_buffer(EditLine * el)417 terminal_alloc_buffer(EditLine *el)
418 {
419 wint_t **b;
420 coord_t *c = &el->el_terminal.t_size;
421 int i;
422
423 b = el_calloc((size_t)(c->v + 1), sizeof(*b));
424 if (b == NULL)
425 return NULL;
426 for (i = 0; i < c->v; i++) {
427 b[i] = el_calloc((size_t)(c->h + 1), sizeof(**b));
428 if (b[i] == NULL) {
429 while (--i >= 0)
430 el_free(b[i]);
431 el_free(b);
432 return NULL;
433 }
434 }
435 b[c->v] = NULL;
436 return b;
437 }
438
439 static void
terminal_free_buffer(wint_t *** bp)440 terminal_free_buffer(wint_t ***bp)
441 {
442 wint_t **b;
443 wint_t **bufp;
444
445 if (*bp == NULL)
446 return;
447
448 b = *bp;
449 *bp = NULL;
450
451 for (bufp = b; *bufp != NULL; bufp++)
452 el_free(*bufp);
453 el_free(b);
454 }
455
456 /* terminal_alloc_display():
457 * Allocate a new display.
458 */
459 static int
terminal_alloc_display(EditLine * el)460 terminal_alloc_display(EditLine *el)
461 {
462 el->el_display = terminal_alloc_buffer(el);
463 if (el->el_display == NULL)
464 goto done;
465 el->el_vdisplay = terminal_alloc_buffer(el);
466 if (el->el_vdisplay == NULL)
467 goto done;
468 return 0;
469 done:
470 terminal_free_display(el);
471 return -1;
472 }
473
474
475 /* terminal_free_display():
476 * Free the display buffers
477 */
478 static void
terminal_free_display(EditLine * el)479 terminal_free_display(EditLine *el)
480 {
481 terminal_free_buffer(&el->el_display);
482 terminal_free_buffer(&el->el_vdisplay);
483 }
484
485
486 /* terminal_move_to_line():
487 * move to line <where> (first line == 0)
488 * as efficiently as possible
489 */
490 libedit_private void
terminal_move_to_line(EditLine * el,int where)491 terminal_move_to_line(EditLine *el, int where)
492 {
493 int del;
494
495 if (where == el->el_cursor.v)
496 return;
497
498 if (where >= el->el_terminal.t_size.v) {
499 #ifdef DEBUG_SCREEN
500 (void) fprintf(el->el_errfile,
501 "%s: where is ridiculous: %d\r\n", __func__, where);
502 #endif /* DEBUG_SCREEN */
503 return;
504 }
505 if ((del = where - el->el_cursor.v) > 0) {
506 /*
507 * We don't use DO here because some terminals are buggy
508 * if the destination is beyond bottom of the screen.
509 */
510 for (; del > 0; del--)
511 terminal__putc(el, '\n');
512 /* because the \n will become \r\n */
513 el->el_cursor.h = 0;
514 } else { /* del < 0 */
515 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
516 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del);
517 else {
518 if (GoodStr(T_up))
519 for (; del < 0; del++)
520 terminal_tputs(el, Str(T_up), 1);
521 }
522 }
523 el->el_cursor.v = where;/* now where is here */
524 }
525
526
527 /* terminal_move_to_char():
528 * Move to the character position specified
529 */
530 libedit_private void
terminal_move_to_char(EditLine * el,int where)531 terminal_move_to_char(EditLine *el, int where)
532 {
533 int del, i;
534
535 mc_again:
536 if (where == el->el_cursor.h)
537 return;
538
539 if (where > el->el_terminal.t_size.h) {
540 #ifdef DEBUG_SCREEN
541 (void) fprintf(el->el_errfile,
542 "%s: where is ridiculous: %d\r\n", __func__, where);
543 #endif /* DEBUG_SCREEN */
544 return;
545 }
546 if (!where) { /* if where is first column */
547 terminal__putc(el, '\r'); /* do a CR */
548 el->el_cursor.h = 0;
549 return;
550 }
551 del = where - el->el_cursor.h;
552
553 if ((del < -4 || del > 4) && GoodStr(T_ch))
554 /* go there directly */
555 terminal_tputs(el, tgoto(Str(T_ch), where, where), where);
556 else {
557 if (del > 0) { /* moving forward */
558 if ((del > 4) && GoodStr(T_RI))
559 terminal_tputs(el, tgoto(Str(T_RI), del, del),
560 del);
561 else {
562 /* if I can do tabs, use them */
563 if (EL_CAN_TAB) {
564 if ((el->el_cursor.h & 0370) !=
565 (where & ~0x7)
566 && (el->el_display[
567 el->el_cursor.v][where & 0370] !=
568 MB_FILL_CHAR)
569 ) {
570 /* if not within tab stop */
571 for (i =
572 (el->el_cursor.h & 0370);
573 i < (where & ~0x7);
574 i += 8)
575 terminal__putc(el,
576 '\t');
577 /* then tab over */
578 el->el_cursor.h = where & ~0x7;
579 }
580 }
581 /*
582 * it's usually cheaper to just write the
583 * chars, so we do.
584 */
585 /*
586 * NOTE THAT terminal_overwrite() WILL CHANGE
587 * el->el_cursor.h!!!
588 */
589 terminal_overwrite(el,
590 (wchar_t *)&el->el_display[
591 el->el_cursor.v][el->el_cursor.h],
592 (size_t)(where - el->el_cursor.h));
593
594 }
595 } else { /* del < 0 := moving backward */
596 if ((-del > 4) && GoodStr(T_LE))
597 terminal_tputs(el, tgoto(Str(T_LE), -del, -del),
598 -del);
599 else { /* can't go directly there */
600 /*
601 * if the "cost" is greater than the "cost"
602 * from col 0
603 */
604 if (EL_CAN_TAB ?
605 ((unsigned int)-del >
606 (((unsigned int) where >> 3) +
607 (where & 07)))
608 : (-del > where)) {
609 terminal__putc(el, '\r');/* do a CR */
610 el->el_cursor.h = 0;
611 goto mc_again; /* and try again */
612 }
613 for (i = 0; i < -del; i++)
614 terminal__putc(el, '\b');
615 }
616 }
617 }
618 el->el_cursor.h = where; /* now where is here */
619 }
620
621
622 /* terminal_overwrite():
623 * Overstrike num characters
624 * Assumes MB_FILL_CHARs are present to keep the column count correct
625 */
626 libedit_private void
terminal_overwrite(EditLine * el,const wchar_t * cp,size_t n)627 terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n)
628 {
629 if (n == 0)
630 return;
631
632 if (n > (size_t)el->el_terminal.t_size.h) {
633 #ifdef DEBUG_SCREEN
634 (void) fprintf(el->el_errfile,
635 "%s: n is ridiculous: %zu\r\n", __func__, n);
636 #endif /* DEBUG_SCREEN */
637 return;
638 }
639
640 do {
641 /* terminal__putc() ignores any MB_FILL_CHARs */
642 terminal__putc(el, *cp++);
643 el->el_cursor.h++;
644 } while (--n);
645
646 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */
647 if (EL_HAS_AUTO_MARGINS) { /* yes */
648 el->el_cursor.h = 0;
649 if (el->el_cursor.v + 1 < el->el_terminal.t_size.v)
650 el->el_cursor.v++;
651 if (EL_HAS_MAGIC_MARGINS) {
652 /* force the wrap to avoid the "magic"
653 * situation */
654 wchar_t c;
655 if ((c = el->el_display[el->el_cursor.v]
656 [el->el_cursor.h]) != '\0') {
657 terminal_overwrite(el, &c, (size_t)1);
658 while (el->el_display[el->el_cursor.v]
659 [el->el_cursor.h] == MB_FILL_CHAR)
660 el->el_cursor.h++;
661 } else {
662 terminal__putc(el, ' ');
663 el->el_cursor.h = 1;
664 }
665 }
666 } else /* no wrap, but cursor stays on screen */
667 el->el_cursor.h = el->el_terminal.t_size.h - 1;
668 }
669 }
670
671
672 /* terminal_deletechars():
673 * Delete num characters
674 */
675 libedit_private void
terminal_deletechars(EditLine * el,int num)676 terminal_deletechars(EditLine *el, int num)
677 {
678 if (num <= 0)
679 return;
680
681 if (!EL_CAN_DELETE) {
682 #ifdef DEBUG_EDIT
683 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
684 #endif /* DEBUG_EDIT */
685 return;
686 }
687 if (num > el->el_terminal.t_size.h) {
688 #ifdef DEBUG_SCREEN
689 (void) fprintf(el->el_errfile,
690 "%s: num is ridiculous: %d\r\n", __func__, num);
691 #endif /* DEBUG_SCREEN */
692 return;
693 }
694 if (GoodStr(T_DC)) /* if I have multiple delete */
695 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
696 * expen. */
697 terminal_tputs(el, tgoto(Str(T_DC), num, num), num);
698 return;
699 }
700 if (GoodStr(T_dm)) /* if I have delete mode */
701 terminal_tputs(el, Str(T_dm), 1);
702
703 if (GoodStr(T_dc)) /* else do one at a time */
704 while (num--)
705 terminal_tputs(el, Str(T_dc), 1);
706
707 if (GoodStr(T_ed)) /* if I have delete mode */
708 terminal_tputs(el, Str(T_ed), 1);
709 }
710
711
712 /* terminal_insertwrite():
713 * Puts terminal in insert character mode or inserts num
714 * characters in the line
715 * Assumes MB_FILL_CHARs are present to keep column count correct
716 */
717 libedit_private void
terminal_insertwrite(EditLine * el,wchar_t * cp,int num)718 terminal_insertwrite(EditLine *el, wchar_t *cp, int num)
719 {
720 if (num <= 0)
721 return;
722 if (!EL_CAN_INSERT) {
723 #ifdef DEBUG_EDIT
724 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
725 #endif /* DEBUG_EDIT */
726 return;
727 }
728 if (num > el->el_terminal.t_size.h) {
729 #ifdef DEBUG_SCREEN
730 (void) fprintf(el->el_errfile,
731 "%s: num is ridiculous: %d\r\n", __func__, num);
732 #endif /* DEBUG_SCREEN */
733 return;
734 }
735 if (GoodStr(T_IC)) /* if I have multiple insert */
736 if ((num > 1) || !GoodStr(T_ic)) {
737 /* if ic would be more expensive */
738 terminal_tputs(el, tgoto(Str(T_IC), num, num), num);
739 terminal_overwrite(el, cp, (size_t)num);
740 /* this updates el_cursor.h */
741 return;
742 }
743 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
744 terminal_tputs(el, Str(T_im), 1);
745
746 el->el_cursor.h += num;
747 do
748 terminal__putc(el, *cp++);
749 while (--num);
750
751 if (GoodStr(T_ip)) /* have to make num chars insert */
752 terminal_tputs(el, Str(T_ip), 1);
753
754 terminal_tputs(el, Str(T_ei), 1);
755 return;
756 }
757 do {
758 if (GoodStr(T_ic)) /* have to make num chars insert */
759 terminal_tputs(el, Str(T_ic), 1);
760
761 terminal__putc(el, *cp++);
762
763 el->el_cursor.h++;
764
765 if (GoodStr(T_ip)) /* have to make num chars insert */
766 terminal_tputs(el, Str(T_ip), 1);
767 /* pad the inserted char */
768
769 } while (--num);
770 }
771
772
773 /* terminal_clear_EOL():
774 * clear to end of line. There are num characters to clear
775 */
776 libedit_private void
terminal_clear_EOL(EditLine * el,int num)777 terminal_clear_EOL(EditLine *el, int num)
778 {
779 int i;
780
781 if (EL_CAN_CEOL && GoodStr(T_ce))
782 terminal_tputs(el, Str(T_ce), 1);
783 else {
784 for (i = 0; i < num; i++)
785 terminal__putc(el, ' ');
786 el->el_cursor.h += num; /* have written num spaces */
787 }
788 }
789
790
791 /* terminal_clear_screen():
792 * Clear the screen
793 */
794 libedit_private void
terminal_clear_screen(EditLine * el)795 terminal_clear_screen(EditLine *el)
796 { /* clear the whole screen and home */
797
798 if (GoodStr(T_cl))
799 /* send the clear screen code */
800 terminal_tputs(el, Str(T_cl), Val(T_li));
801 else if (GoodStr(T_ho) && GoodStr(T_cd)) {
802 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */
803 /* clear to bottom of screen */
804 terminal_tputs(el, Str(T_cd), Val(T_li));
805 } else {
806 terminal__putc(el, '\r');
807 terminal__putc(el, '\n');
808 }
809 }
810
811
812 /* terminal_beep():
813 * Beep the way the terminal wants us
814 */
815 libedit_private void
terminal_beep(EditLine * el)816 terminal_beep(EditLine *el)
817 {
818 if (GoodStr(T_bl))
819 /* what termcap says we should use */
820 terminal_tputs(el, Str(T_bl), 1);
821 else
822 terminal__putc(el, '\007'); /* an ASCII bell; ^G */
823 }
824
825
826 libedit_private void
terminal_get(EditLine * el,const char ** term)827 terminal_get(EditLine *el, const char **term)
828 {
829 *term = el->el_terminal.t_name;
830 }
831
832
833 /* terminal_set():
834 * Read in the terminal capabilities from the requested terminal
835 */
836 libedit_private int
terminal_set(EditLine * el,const char * term)837 terminal_set(EditLine *el, const char *term)
838 {
839 int i;
840 char buf[TC_BUFSIZE];
841 char *area;
842 const struct termcapstr *t;
843 sigset_t oset, nset;
844 int lins, cols;
845
846 (void) sigemptyset(&nset);
847 (void) sigaddset(&nset, SIGWINCH);
848 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
849
850 area = buf;
851
852
853 if (term == NULL)
854 term = getenv("TERM");
855
856 if (!term || !term[0])
857 term = "dumb";
858
859 if (strcmp(term, "emacs") == 0)
860 el->el_flags |= EDIT_DISABLED;
861
862 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE);
863
864 i = tgetent(el->el_terminal.t_cap, term);
865
866 if (i <= 0) {
867 if (i == -1)
868 (void) fprintf(el->el_errfile,
869 "Cannot read termcap database;\n");
870 else if (i == 0)
871 (void) fprintf(el->el_errfile,
872 "No entry for terminal type \"%s\";\n", term);
873 (void) fprintf(el->el_errfile,
874 "using dumb terminal settings.\n");
875 Val(T_co) = 80; /* do a dumb terminal */
876 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
877 Val(T_xt) = Val(T_MT);
878 for (t = tstr; t->name != NULL; t++)
879 terminal_alloc(el, t, NULL);
880 } else {
881 /* auto/magic margins */
882 Val(T_am) = tgetflag("am");
883 Val(T_xn) = tgetflag("xn");
884 /* Can we tab */
885 Val(T_pt) = tgetflag("pt");
886 Val(T_xt) = tgetflag("xt");
887 /* do we have a meta? */
888 Val(T_km) = tgetflag("km");
889 Val(T_MT) = tgetflag("MT");
890 /* Get the size */
891 Val(T_co) = tgetnum("co");
892 Val(T_li) = tgetnum("li");
893 for (t = tstr; t->name != NULL; t++) {
894 /* XXX: some systems' tgetstr needs non const */
895 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name),
896 &area));
897 }
898 }
899
900 if (Val(T_co) < 2)
901 Val(T_co) = 80; /* just in case */
902 if (Val(T_li) < 1)
903 Val(T_li) = 24;
904
905 el->el_terminal.t_size.v = Val(T_co);
906 el->el_terminal.t_size.h = Val(T_li);
907
908 terminal_setflags(el);
909
910 /* get the correct window size */
911 (void) terminal_get_size(el, &lins, &cols);
912 if (terminal_change_size(el, lins, cols) == -1)
913 return -1;
914 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
915 terminal_bind_arrow(el);
916 el->el_terminal.t_name = term;
917 return i <= 0 ? -1 : 0;
918 }
919
920
921 /* terminal_get_size():
922 * Return the new window size in lines and cols, and
923 * true if the size was changed.
924 */
925 libedit_private int
terminal_get_size(EditLine * el,int * lins,int * cols)926 terminal_get_size(EditLine *el, int *lins, int *cols)
927 {
928
929 *cols = Val(T_co);
930 *lins = Val(T_li);
931
932 #ifdef TIOCGWINSZ
933 {
934 struct winsize ws;
935 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) {
936 if (ws.ws_col)
937 *cols = ws.ws_col;
938 if (ws.ws_row)
939 *lins = ws.ws_row;
940 }
941 }
942 #endif
943 #ifdef TIOCGSIZE
944 {
945 struct ttysize ts;
946 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) {
947 if (ts.ts_cols)
948 *cols = ts.ts_cols;
949 if (ts.ts_lines)
950 *lins = ts.ts_lines;
951 }
952 }
953 #endif
954 return Val(T_co) != *cols || Val(T_li) != *lins;
955 }
956
957
958 /* terminal_change_size():
959 * Change the size of the terminal
960 */
961 libedit_private int
terminal_change_size(EditLine * el,int lins,int cols)962 terminal_change_size(EditLine *el, int lins, int cols)
963 {
964 coord_t cur = el->el_cursor;
965 /*
966 * Just in case
967 */
968 Val(T_co) = (cols < 2) ? 80 : cols;
969 Val(T_li) = (lins < 1) ? 24 : lins;
970
971 /* re-make display buffers */
972 if (terminal_rebuffer_display(el) == -1)
973 return -1;
974 re_clear_display(el);
975 el->el_cursor = cur;
976 return 0;
977 }
978
979
980 /* terminal_init_arrow():
981 * Initialize the arrow key bindings from termcap
982 */
983 static void
terminal_init_arrow(EditLine * el)984 terminal_init_arrow(EditLine *el)
985 {
986 funckey_t *arrow = el->el_terminal.t_fkey;
987
988 arrow[A_K_DN].name = L"down";
989 arrow[A_K_DN].key = T_kd;
990 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
991 arrow[A_K_DN].type = XK_CMD;
992
993 arrow[A_K_UP].name = L"up";
994 arrow[A_K_UP].key = T_ku;
995 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
996 arrow[A_K_UP].type = XK_CMD;
997
998 arrow[A_K_LT].name = L"left";
999 arrow[A_K_LT].key = T_kl;
1000 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1001 arrow[A_K_LT].type = XK_CMD;
1002
1003 arrow[A_K_RT].name = L"right";
1004 arrow[A_K_RT].key = T_kr;
1005 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1006 arrow[A_K_RT].type = XK_CMD;
1007
1008 arrow[A_K_HO].name = L"home";
1009 arrow[A_K_HO].key = T_kh;
1010 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1011 arrow[A_K_HO].type = XK_CMD;
1012
1013 arrow[A_K_EN].name = L"end";
1014 arrow[A_K_EN].key = T_at7;
1015 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1016 arrow[A_K_EN].type = XK_CMD;
1017
1018 arrow[A_K_DE].name = L"delete";
1019 arrow[A_K_DE].key = T_kD;
1020 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR;
1021 arrow[A_K_DE].type = XK_CMD;
1022 }
1023
1024
1025 /* terminal_reset_arrow():
1026 * Reset arrow key bindings
1027 */
1028 static void
terminal_reset_arrow(EditLine * el)1029 terminal_reset_arrow(EditLine *el)
1030 {
1031 funckey_t *arrow = el->el_terminal.t_fkey;
1032 static const wchar_t strA[] = L"\033[A";
1033 static const wchar_t strB[] = L"\033[B";
1034 static const wchar_t strC[] = L"\033[C";
1035 static const wchar_t strD[] = L"\033[D";
1036 static const wchar_t strH[] = L"\033[H";
1037 static const wchar_t strF[] = L"\033[F";
1038 static const wchar_t stOA[] = L"\033OA";
1039 static const wchar_t stOB[] = L"\033OB";
1040 static const wchar_t stOC[] = L"\033OC";
1041 static const wchar_t stOD[] = L"\033OD";
1042 static const wchar_t stOH[] = L"\033OH";
1043 static const wchar_t stOF[] = L"\033OF";
1044
1045 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1046 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1047 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1048 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1049 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1050 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1051 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1052 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1053 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1054 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1055 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1056 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1057
1058 if (el->el_map.type != MAP_VI)
1059 return;
1060 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1061 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1062 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1063 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1064 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1065 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1066 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1067 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1068 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1069 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1070 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1071 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1072 }
1073
1074
1075 /* terminal_set_arrow():
1076 * Set an arrow key binding
1077 */
1078 libedit_private int
terminal_set_arrow(EditLine * el,const wchar_t * name,keymacro_value_t * fun,int type)1079 terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun,
1080 int type)
1081 {
1082 funckey_t *arrow = el->el_terminal.t_fkey;
1083 int i;
1084
1085 for (i = 0; i < A_K_NKEYS; i++)
1086 if (wcscmp(name, arrow[i].name) == 0) {
1087 arrow[i].fun = *fun;
1088 arrow[i].type = type;
1089 return 0;
1090 }
1091 return -1;
1092 }
1093
1094
1095 /* terminal_clear_arrow():
1096 * Clear an arrow key binding
1097 */
1098 libedit_private int
terminal_clear_arrow(EditLine * el,const wchar_t * name)1099 terminal_clear_arrow(EditLine *el, const wchar_t *name)
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 (wcscmp(name, arrow[i].name) == 0) {
1106 arrow[i].type = XK_NOD;
1107 return 0;
1108 }
1109 return -1;
1110 }
1111
1112
1113 /* terminal_print_arrow():
1114 * Print the arrow key bindings
1115 */
1116 libedit_private void
terminal_print_arrow(EditLine * el,const wchar_t * name)1117 terminal_print_arrow(EditLine *el, const wchar_t *name)
1118 {
1119 int i;
1120 funckey_t *arrow = el->el_terminal.t_fkey;
1121
1122 for (i = 0; i < A_K_NKEYS; i++)
1123 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0)
1124 if (arrow[i].type != XK_NOD)
1125 keymacro_kprint(el, arrow[i].name,
1126 &arrow[i].fun, arrow[i].type);
1127 }
1128
1129
1130 /* terminal_bind_arrow():
1131 * Bind the arrow keys
1132 */
1133 libedit_private void
terminal_bind_arrow(EditLine * el)1134 terminal_bind_arrow(EditLine *el)
1135 {
1136 el_action_t *map;
1137 const el_action_t *dmap;
1138 int i, j;
1139 char *p;
1140 funckey_t *arrow = el->el_terminal.t_fkey;
1141
1142 /* Check if the components needed are initialized */
1143 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL)
1144 return;
1145
1146 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1147 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1148
1149 terminal_reset_arrow(el);
1150
1151 for (i = 0; i < A_K_NKEYS; i++) {
1152 wchar_t wt_str[VISUAL_WIDTH_MAX];
1153 wchar_t *px;
1154 size_t n;
1155
1156 p = el->el_terminal.t_str[arrow[i].key];
1157 if (!p || !*p)
1158 continue;
1159 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n)
1160 wt_str[n] = p[n];
1161 while (n < VISUAL_WIDTH_MAX)
1162 wt_str[n++] = '\0';
1163 px = wt_str;
1164 j = (unsigned char) *p;
1165 /*
1166 * Assign the arrow keys only if:
1167 *
1168 * 1. They are multi-character arrow keys and the user
1169 * has not re-assigned the leading character, or
1170 * has re-assigned the leading character to be
1171 * ED_SEQUENCE_LEAD_IN
1172 * 2. They are single arrow keys pointing to an
1173 * unassigned key.
1174 */
1175 if (arrow[i].type == XK_NOD)
1176 keymacro_clear(el, map, px);
1177 else {
1178 if (p[1] && (dmap[j] == map[j] ||
1179 map[j] == ED_SEQUENCE_LEAD_IN)) {
1180 keymacro_add(el, px, &arrow[i].fun,
1181 arrow[i].type);
1182 map[j] = ED_SEQUENCE_LEAD_IN;
1183 } else if (map[j] == ED_UNASSIGNED) {
1184 keymacro_clear(el, map, px);
1185 if (arrow[i].type == XK_CMD)
1186 map[j] = arrow[i].fun.cmd;
1187 else
1188 keymacro_add(el, px, &arrow[i].fun,
1189 arrow[i].type);
1190 }
1191 }
1192 }
1193 }
1194
1195 /* terminal_putc():
1196 * Add a character
1197 */
1198 static int
terminal_putc(int c)1199 terminal_putc(int c)
1200 {
1201 if (terminal_outfile == NULL)
1202 return -1;
1203 return fputc(c, terminal_outfile);
1204 }
1205
1206 static void
terminal_tputs(EditLine * el,const char * cap,int affcnt)1207 terminal_tputs(EditLine *el, const char *cap, int affcnt)
1208 {
1209 #ifdef _REENTRANT
1210 pthread_mutex_lock(&terminal_mutex);
1211 #endif
1212 terminal_outfile = el->el_outfile;
1213 (void)tputs(cap, affcnt, terminal_putc);
1214 #ifdef _REENTRANT
1215 pthread_mutex_unlock(&terminal_mutex);
1216 #endif
1217 }
1218
1219 /* terminal__putc():
1220 * Add a character
1221 */
1222 libedit_private int
terminal__putc(EditLine * el,wint_t c)1223 terminal__putc(EditLine *el, wint_t c)
1224 {
1225 char buf[MB_LEN_MAX +1];
1226 ssize_t i;
1227 if (c == MB_FILL_CHAR)
1228 return 0;
1229 if (c & EL_LITERAL)
1230 return fputs(literal_get(el, c), el->el_outfile);
1231 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c);
1232 if (i <= 0)
1233 return (int)i;
1234 buf[i] = '\0';
1235 return fputs(buf, el->el_outfile);
1236 }
1237
1238 /* terminal__flush():
1239 * Flush output
1240 */
1241 libedit_private void
terminal__flush(EditLine * el)1242 terminal__flush(EditLine *el)
1243 {
1244
1245 (void) fflush(el->el_outfile);
1246 }
1247
1248 /* terminal_writec():
1249 * Write the given character out, in a human readable form
1250 */
1251 libedit_private void
terminal_writec(EditLine * el,wint_t c)1252 terminal_writec(EditLine *el, wint_t c)
1253 {
1254 wchar_t visbuf[VISUAL_WIDTH_MAX +1];
1255 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c);
1256 if (vcnt < 0)
1257 vcnt = 0;
1258 visbuf[vcnt] = '\0';
1259 terminal_overwrite(el, visbuf, (size_t)vcnt);
1260 terminal__flush(el);
1261 }
1262
1263
1264 /* terminal_telltc():
1265 * Print the current termcap characteristics
1266 */
1267 libedit_private int
1268 /*ARGSUSED*/
terminal_telltc(EditLine * el,int argc,const wchar_t ** argv)1269 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)),
1270 const wchar_t **argv __attribute__((__unused__)))
1271 {
1272 const struct termcapstr *t;
1273 char **ts;
1274
1275 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1276 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1277 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1278 Val(T_co), Val(T_li));
1279 (void) fprintf(el->el_outfile,
1280 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1281 (void) fprintf(el->el_outfile,
1282 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1283 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1284 EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1285 if (EL_HAS_AUTO_MARGINS)
1286 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1287 EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1288
1289 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) {
1290 const char *ub;
1291 if (*ts && **ts) {
1292 ub = ct_encode_string(ct_visual_string(
1293 ct_decode_string(*ts, &el->el_scratch),
1294 &el->el_visual), &el->el_scratch);
1295 } else {
1296 ub = "(empty)";
1297 }
1298 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1299 t->long_name, t->name, ub);
1300 }
1301 (void) fputc('\n', el->el_outfile);
1302 return 0;
1303 }
1304
1305
1306 /* terminal_settc():
1307 * Change the current terminal characteristics
1308 */
1309 libedit_private int
1310 /*ARGSUSED*/
terminal_settc(EditLine * el,int argc,const wchar_t ** argv)1311 terminal_settc(EditLine *el, int argc __attribute__((__unused__)),
1312 const wchar_t **argv)
1313 {
1314 const struct termcapstr *ts;
1315 const struct termcapval *tv;
1316 char what[8], how[8];
1317 long i;
1318 char *ep;
1319
1320 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1321 return -1;
1322
1323 strlcpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what));
1324 strlcpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how));
1325
1326 /*
1327 * Do the strings first
1328 */
1329 for (ts = tstr; ts->name != NULL; ts++)
1330 if (strcmp(ts->name, what) == 0)
1331 break;
1332
1333 if (ts->name != NULL) {
1334 terminal_alloc(el, ts, how);
1335 terminal_setflags(el);
1336 return 0;
1337 }
1338 /*
1339 * Do the numeric ones second
1340 */
1341 for (tv = tval; tv->name != NULL; tv++)
1342 if (strcmp(tv->name, what) == 0)
1343 break;
1344
1345 if (tv->name == NULL) {
1346 (void) fprintf(el->el_errfile,
1347 "%ls: Bad capability `%s'.\n", argv[0], what);
1348 return -1;
1349 }
1350
1351 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1352 tv == &tval[T_am] || tv == &tval[T_xn]) {
1353 /*
1354 * Booleans
1355 */
1356 if (strcmp(how, "yes") == 0)
1357 el->el_terminal.t_val[tv - tval] = 1;
1358 else if (strcmp(how, "no") == 0)
1359 el->el_terminal.t_val[tv - tval] = 0;
1360 else {
1361 (void) fprintf(el->el_errfile,
1362 "%ls: Bad value `%s'.\n", argv[0], how);
1363 return -1;
1364 }
1365 terminal_setflags(el);
1366 return 0;
1367 }
1368
1369 /*
1370 * Numerics
1371 */
1372 i = strtol(how, &ep, 10);
1373 if (*ep != '\0') {
1374 (void) fprintf(el->el_errfile,
1375 "%ls: Bad value `%s'.\n", argv[0], how);
1376 return -1;
1377 }
1378 el->el_terminal.t_val[tv - tval] = (int) i;
1379 i = 0;
1380 if (tv == &tval[T_co]) {
1381 el->el_terminal.t_size.v = Val(T_co);
1382 i++;
1383 } else if (tv == &tval[T_li]) {
1384 el->el_terminal.t_size.h = Val(T_li);
1385 i++;
1386 }
1387 if (i && terminal_change_size(el, Val(T_li), Val(T_co)) == -1)
1388 return -1;
1389 return 0;
1390 }
1391
1392
1393 /* terminal_gettc():
1394 * Get the current terminal characteristics
1395 */
1396 libedit_private int
1397 /*ARGSUSED*/
terminal_gettc(EditLine * el,int argc,char ** argv)1398 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv)
1399 {
1400 const struct termcapstr *ts;
1401 const struct termcapval *tv;
1402 char *what;
1403 void *how;
1404
1405 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1406 return -1;
1407
1408 what = argv[1];
1409 how = argv[2];
1410
1411 /*
1412 * Do the strings first
1413 */
1414 for (ts = tstr; ts->name != NULL; ts++)
1415 if (strcmp(ts->name, what) == 0)
1416 break;
1417
1418 if (ts->name != NULL) {
1419 *(char **)how = el->el_terminal.t_str[ts - tstr];
1420 return 0;
1421 }
1422 /*
1423 * Do the numeric ones second
1424 */
1425 for (tv = tval; tv->name != NULL; tv++)
1426 if (strcmp(tv->name, what) == 0)
1427 break;
1428
1429 if (tv->name == NULL)
1430 return -1;
1431
1432 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1433 tv == &tval[T_am] || tv == &tval[T_xn]) {
1434 static char yes[] = "yes";
1435 static char no[] = "no";
1436 if (el->el_terminal.t_val[tv - tval])
1437 *(char **)how = yes;
1438 else
1439 *(char **)how = no;
1440 return 0;
1441 } else {
1442 *(int *)how = el->el_terminal.t_val[tv - tval];
1443 return 0;
1444 }
1445 }
1446
1447 /* terminal_echotc():
1448 * Print the termcap string out with variable substitution
1449 */
1450 libedit_private int
1451 /*ARGSUSED*/
terminal_echotc(EditLine * el,int argc,const wchar_t ** argv)1452 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)),
1453 const wchar_t **argv)
1454 {
1455 char *cap, *scap;
1456 wchar_t *ep;
1457 int arg_need, arg_cols, arg_rows;
1458 int verbose = 0, silent = 0;
1459 char *area;
1460 static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1461 const struct termcapstr *t;
1462 char buf[TC_BUFSIZE];
1463 long i;
1464
1465 area = buf;
1466
1467 if (argv == NULL || argv[1] == NULL)
1468 return -1;
1469 argv++;
1470
1471 if (argv[0][0] == '-') {
1472 switch (argv[0][1]) {
1473 case 'v':
1474 verbose = 1;
1475 break;
1476 case 's':
1477 silent = 1;
1478 break;
1479 default:
1480 /* stderror(ERR_NAME | ERR_TCUSAGE); */
1481 break;
1482 }
1483 argv++;
1484 }
1485 if (!*argv || *argv[0] == '\0')
1486 return 0;
1487 if (wcscmp(*argv, L"tabs") == 0) {
1488 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1489 return 0;
1490 } else if (wcscmp(*argv, L"meta") == 0) {
1491 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1492 return 0;
1493 } else if (wcscmp(*argv, L"xn") == 0) {
1494 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1495 "yes" : "no");
1496 return 0;
1497 } else if (wcscmp(*argv, L"am") == 0) {
1498 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1499 "yes" : "no");
1500 return 0;
1501 } else if (wcscmp(*argv, L"baud") == 0) {
1502 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
1503 return 0;
1504 } else if (wcscmp(*argv, L"rows") == 0 ||
1505 wcscmp(*argv, L"lines") == 0) {
1506 (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1507 return 0;
1508 } else if (wcscmp(*argv, L"cols") == 0) {
1509 (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1510 return 0;
1511 }
1512 /*
1513 * Try to use our local definition first
1514 */
1515 scap = NULL;
1516 for (t = tstr; t->name != NULL; t++)
1517 if (strcmp(t->name,
1518 ct_encode_string(*argv, &el->el_scratch)) == 0) {
1519 scap = el->el_terminal.t_str[t - tstr];
1520 break;
1521 }
1522 if (t->name == NULL) {
1523 /* XXX: some systems' tgetstr needs non const */
1524 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area);
1525 }
1526 if (!scap || scap[0] == '\0') {
1527 if (!silent)
1528 (void) fprintf(el->el_errfile,
1529 "echotc: Termcap parameter `%ls' not found.\n",
1530 *argv);
1531 return -1;
1532 }
1533 /*
1534 * Count home many values we need for this capability.
1535 */
1536 for (cap = scap, arg_need = 0; *cap; cap++)
1537 if (*cap == '%')
1538 switch (*++cap) {
1539 case 'd':
1540 case '2':
1541 case '3':
1542 case '.':
1543 case '+':
1544 arg_need++;
1545 break;
1546 case '%':
1547 case '>':
1548 case 'i':
1549 case 'r':
1550 case 'n':
1551 case 'B':
1552 case 'D':
1553 break;
1554 default:
1555 /*
1556 * hpux has lot's of them...
1557 */
1558 if (verbose)
1559 (void) fprintf(el->el_errfile,
1560 "echotc: Warning: unknown termcap %% `%c'.\n",
1561 *cap);
1562 /* This is bad, but I won't complain */
1563 break;
1564 }
1565
1566 switch (arg_need) {
1567 case 0:
1568 argv++;
1569 if (*argv && *argv[0]) {
1570 if (!silent)
1571 (void) fprintf(el->el_errfile,
1572 "echotc: Warning: Extra argument `%ls'.\n",
1573 *argv);
1574 return -1;
1575 }
1576 terminal_tputs(el, scap, 1);
1577 break;
1578 case 1:
1579 argv++;
1580 if (!*argv || *argv[0] == '\0') {
1581 if (!silent)
1582 (void) fprintf(el->el_errfile,
1583 "echotc: Warning: Missing argument.\n");
1584 return -1;
1585 }
1586 arg_cols = 0;
1587 i = wcstol(*argv, &ep, 10);
1588 if (*ep != '\0' || i < 0) {
1589 if (!silent)
1590 (void) fprintf(el->el_errfile,
1591 "echotc: Bad value `%ls' for rows.\n",
1592 *argv);
1593 return -1;
1594 }
1595 arg_rows = (int) i;
1596 argv++;
1597 if (*argv && *argv[0]) {
1598 if (!silent)
1599 (void) fprintf(el->el_errfile,
1600 "echotc: Warning: Extra argument `%ls"
1601 "'.\n", *argv);
1602 return -1;
1603 }
1604 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1);
1605 break;
1606 default:
1607 /* This is wrong, but I will ignore it... */
1608 if (verbose)
1609 (void) fprintf(el->el_errfile,
1610 "echotc: Warning: Too many required arguments (%d).\n",
1611 arg_need);
1612 /* FALLTHROUGH */
1613 case 2:
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 i = wcstol(*argv, &ep, 10);
1622 if (*ep != '\0' || i < 0) {
1623 if (!silent)
1624 (void) fprintf(el->el_errfile,
1625 "echotc: Bad value `%ls' for cols.\n",
1626 *argv);
1627 return -1;
1628 }
1629 arg_cols = (int) i;
1630 argv++;
1631 if (!*argv || *argv[0] == '\0') {
1632 if (!silent)
1633 (void) fprintf(el->el_errfile,
1634 "echotc: Warning: Missing argument.\n");
1635 return -1;
1636 }
1637 i = wcstol(*argv, &ep, 10);
1638 if (*ep != '\0' || i < 0) {
1639 if (!silent)
1640 (void) fprintf(el->el_errfile,
1641 "echotc: Bad value `%ls' for rows.\n",
1642 *argv);
1643 return -1;
1644 }
1645 arg_rows = (int) i;
1646 if (*ep != '\0') {
1647 if (!silent)
1648 (void) fprintf(el->el_errfile,
1649 "echotc: Bad value `%ls'.\n", *argv);
1650 return -1;
1651 }
1652 argv++;
1653 if (*argv && *argv[0]) {
1654 if (!silent)
1655 (void) fprintf(el->el_errfile,
1656 "echotc: Warning: Extra argument `%ls"
1657 "'.\n", *argv);
1658 return -1;
1659 }
1660 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows);
1661 break;
1662 }
1663 return 0;
1664 }
1665