1 /* $NetBSD: terminal.c,v 1.41 2019/11/12 20:59:46 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 1.41 2019/11/12 20:59:46 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 #ifdef _REENTRANT
72 #include <pthread.h>
73 #endif
74
75 #include "el.h"
76 #include "fcns.h"
77
78 /*
79 * IMPORTANT NOTE: these routines are allowed to look at the current screen
80 * and the current position assuming that it is correct. If this is not
81 * true, then the update will be WRONG! This is (should be) a valid
82 * assumption...
83 */
84
85 #define TC_BUFSIZE ((size_t)2048)
86
87 #define GoodStr(a) (el->el_terminal.t_str[a] != NULL && \
88 el->el_terminal.t_str[a][0] != '\0')
89 #define Str(a) el->el_terminal.t_str[a]
90 #define Val(a) el->el_terminal.t_val[a]
91
92 static const struct termcapstr {
93 const char *name;
94 const char *long_name;
95 } tstr[] = {
96 #define T_al 0
97 { "al", "add new blank line" },
98 #define T_bl 1
99 { "bl", "audible bell" },
100 #define T_cd 2
101 { "cd", "clear to bottom" },
102 #define T_ce 3
103 { "ce", "clear to end of line" },
104 #define T_ch 4
105 { "ch", "cursor to horiz pos" },
106 #define T_cl 5
107 { "cl", "clear screen" },
108 #define T_dc 6
109 { "dc", "delete a character" },
110 #define T_dl 7
111 { "dl", "delete a line" },
112 #define T_dm 8
113 { "dm", "start delete mode" },
114 #define T_ed 9
115 { "ed", "end delete mode" },
116 #define T_ei 10
117 { "ei", "end insert mode" },
118 #define T_fs 11
119 { "fs", "cursor from status line" },
120 #define T_ho 12
121 { "ho", "home cursor" },
122 #define T_ic 13
123 { "ic", "insert character" },
124 #define T_im 14
125 { "im", "start insert mode" },
126 #define T_ip 15
127 { "ip", "insert padding" },
128 #define T_kd 16
129 { "kd", "sends cursor down" },
130 #define T_kl 17
131 { "kl", "sends cursor left" },
132 #define T_kr 18
133 { "kr", "sends cursor right" },
134 #define T_ku 19
135 { "ku", "sends cursor up" },
136 #define T_md 20
137 { "md", "begin bold" },
138 #define T_me 21
139 { "me", "end attributes" },
140 #define T_nd 22
141 { "nd", "non destructive space" },
142 #define T_se 23
143 { "se", "end standout" },
144 #define T_so 24
145 { "so", "begin standout" },
146 #define T_ts 25
147 { "ts", "cursor to status line" },
148 #define T_up 26
149 { "up", "cursor up one" },
150 #define T_us 27
151 { "us", "begin underline" },
152 #define T_ue 28
153 { "ue", "end underline" },
154 #define T_vb 29
155 { "vb", "visible bell" },
156 #define T_DC 30
157 { "DC", "delete multiple chars" },
158 #define T_DO 31
159 { "DO", "cursor down multiple" },
160 #define T_IC 32
161 { "IC", "insert multiple chars" },
162 #define T_LE 33
163 { "LE", "cursor left multiple" },
164 #define T_RI 34
165 { "RI", "cursor right multiple" },
166 #define T_UP 35
167 { "UP", "cursor up multiple" },
168 #define T_kh 36
169 { "kh", "send cursor home" },
170 #define T_at7 37
171 { "@7", "send cursor end" },
172 #define T_kD 38
173 { "kD", "send cursor delete" },
174 #define T_str 39
175 { NULL, NULL }
176 };
177
178 static const struct termcapval {
179 const char *name;
180 const char *long_name;
181 } tval[] = {
182 #define T_am 0
183 { "am", "has automatic margins" },
184 #define T_pt 1
185 { "pt", "has physical tabs" },
186 #define T_li 2
187 { "li", "Number of lines" },
188 #define T_co 3
189 { "co", "Number of columns" },
190 #define T_km 4
191 { "km", "Has meta key" },
192 #define T_xt 5
193 { "xt", "Tab chars destructive" },
194 #define T_xn 6
195 { "xn", "newline ignored at right margin" },
196 #define T_MT 7
197 { "MT", "Has meta key" }, /* XXX? */
198 #define T_val 8
199 { NULL, NULL, }
200 };
201 /* do two or more of the attributes use me */
202
203 static void terminal_setflags(EditLine *);
204 static int terminal_rebuffer_display(EditLine *);
205 static void terminal_free_display(EditLine *);
206 static int terminal_alloc_display(EditLine *);
207 static void terminal_alloc(EditLine *, const struct termcapstr *,
208 const char *);
209 static void terminal_init_arrow(EditLine *);
210 static void terminal_reset_arrow(EditLine *);
211 static int terminal_putc(int);
212 static void terminal_tputs(EditLine *, const char *, int);
213
214 #ifdef _REENTRANT
215 static pthread_mutex_t terminal_mutex = PTHREAD_MUTEX_INITIALIZER;
216 #endif
217 static FILE *terminal_outfile = NULL;
218
219
220 /* terminal_setflags():
221 * Set the terminal capability flags
222 */
223 static void
terminal_setflags(EditLine * el)224 terminal_setflags(EditLine *el)
225 {
226 EL_FLAGS = 0;
227 if (el->el_tty.t_tabs)
228 EL_FLAGS |= (Val(T_pt) && !Val(T_xt)) ? TERM_CAN_TAB : 0;
229
230 EL_FLAGS |= (Val(T_km) || Val(T_MT)) ? TERM_HAS_META : 0;
231 EL_FLAGS |= GoodStr(T_ce) ? TERM_CAN_CEOL : 0;
232 EL_FLAGS |= (GoodStr(T_dc) || GoodStr(T_DC)) ? TERM_CAN_DELETE : 0;
233 EL_FLAGS |= (GoodStr(T_im) || GoodStr(T_ic) || GoodStr(T_IC)) ?
234 TERM_CAN_INSERT : 0;
235 EL_FLAGS |= (GoodStr(T_up) || GoodStr(T_UP)) ? TERM_CAN_UP : 0;
236 EL_FLAGS |= Val(T_am) ? TERM_HAS_AUTO_MARGINS : 0;
237 EL_FLAGS |= Val(T_xn) ? TERM_HAS_MAGIC_MARGINS : 0;
238
239 if (GoodStr(T_me) && GoodStr(T_ue))
240 EL_FLAGS |= (strcmp(Str(T_me), Str(T_ue)) == 0) ?
241 TERM_CAN_ME : 0;
242 else
243 EL_FLAGS &= ~TERM_CAN_ME;
244 if (GoodStr(T_me) && GoodStr(T_se))
245 EL_FLAGS |= (strcmp(Str(T_me), Str(T_se)) == 0) ?
246 TERM_CAN_ME : 0;
247
248
249 #ifdef DEBUG_SCREEN
250 if (!EL_CAN_UP) {
251 (void) fprintf(el->el_errfile,
252 "WARNING: Your terminal cannot move up.\n");
253 (void) fprintf(el->el_errfile,
254 "Editing may be odd for long lines.\n");
255 }
256 if (!EL_CAN_CEOL)
257 (void) fprintf(el->el_errfile, "no clear EOL capability.\n");
258 if (!EL_CAN_DELETE)
259 (void) fprintf(el->el_errfile, "no delete char capability.\n");
260 if (!EL_CAN_INSERT)
261 (void) fprintf(el->el_errfile, "no insert char capability.\n");
262 #endif /* DEBUG_SCREEN */
263 }
264
265 /* terminal_init():
266 * Initialize the terminal stuff
267 */
268 libedit_private int
terminal_init(EditLine * el)269 terminal_init(EditLine *el)
270 {
271
272 el->el_terminal.t_buf = el_calloc(TC_BUFSIZE,
273 sizeof(*el->el_terminal.t_buf));
274 if (el->el_terminal.t_buf == NULL)
275 goto fail1;
276 el->el_terminal.t_cap = el_calloc(TC_BUFSIZE,
277 sizeof(*el->el_terminal.t_cap));
278 if (el->el_terminal.t_cap == NULL)
279 goto fail2;
280 el->el_terminal.t_fkey = el_calloc(A_K_NKEYS,
281 sizeof(*el->el_terminal.t_fkey));
282 if (el->el_terminal.t_fkey == NULL)
283 goto fail3;
284 el->el_terminal.t_loc = 0;
285 el->el_terminal.t_str = el_calloc(T_str,
286 sizeof(*el->el_terminal.t_str));
287 if (el->el_terminal.t_str == NULL)
288 goto fail4;
289 el->el_terminal.t_val = el_calloc(T_val,
290 sizeof(*el->el_terminal.t_val));
291 if (el->el_terminal.t_val == NULL)
292 goto fail5;
293 (void) terminal_set(el, NULL);
294 terminal_init_arrow(el);
295 return 0;
296 fail5:
297 free(el->el_terminal.t_str);
298 el->el_terminal.t_str = NULL;
299 fail4:
300 free(el->el_terminal.t_fkey);
301 el->el_terminal.t_fkey = NULL;
302 fail3:
303 free(el->el_terminal.t_cap);
304 el->el_terminal.t_cap = NULL;
305 fail2:
306 free(el->el_terminal.t_buf);
307 el->el_terminal.t_buf = NULL;
308 fail1:
309 return -1;
310 }
311
312 /* terminal_end():
313 * Clean up the terminal stuff
314 */
315 libedit_private void
terminal_end(EditLine * el)316 terminal_end(EditLine *el)
317 {
318
319 el_free(el->el_terminal.t_buf);
320 el->el_terminal.t_buf = NULL;
321 el_free(el->el_terminal.t_cap);
322 el->el_terminal.t_cap = NULL;
323 el->el_terminal.t_loc = 0;
324 el_free(el->el_terminal.t_str);
325 el->el_terminal.t_str = NULL;
326 el_free(el->el_terminal.t_val);
327 el->el_terminal.t_val = NULL;
328 el_free(el->el_terminal.t_fkey);
329 el->el_terminal.t_fkey = NULL;
330 terminal_free_display(el);
331 }
332
333
334 /* terminal_alloc():
335 * Maintain a string pool for termcap strings
336 */
337 static void
terminal_alloc(EditLine * el,const struct termcapstr * t,const char * cap)338 terminal_alloc(EditLine *el, const struct termcapstr *t, const char *cap)
339 {
340 char termbuf[TC_BUFSIZE];
341 size_t tlen, clen;
342 char **tlist = el->el_terminal.t_str;
343 char **tmp, **str = &tlist[t - tstr];
344
345 (void) memset(termbuf, 0, sizeof(termbuf));
346 if (cap == NULL || *cap == '\0') {
347 *str = NULL;
348 return;
349 } else
350 clen = strlen(cap);
351
352 tlen = *str == NULL ? 0 : strlen(*str);
353
354 /*
355 * New string is shorter; no need to allocate space
356 */
357 if (clen <= tlen) {
358 if (*str)
359 (void) strcpy(*str, cap); /* XXX strcpy is safe */
360 return;
361 }
362 /*
363 * New string is longer; see if we have enough space to append
364 */
365 if (el->el_terminal.t_loc + 3 < TC_BUFSIZE) {
366 /* XXX strcpy is safe */
367 (void) strcpy(*str = &el->el_terminal.t_buf[
368 el->el_terminal.t_loc], cap);
369 el->el_terminal.t_loc += clen + 1; /* one for \0 */
370 return;
371 }
372 /*
373 * Compact our buffer; no need to check compaction, cause we know it
374 * fits...
375 */
376 tlen = 0;
377 for (tmp = tlist; tmp < &tlist[T_str]; tmp++)
378 if (*tmp != NULL && **tmp != '\0' && *tmp != *str) {
379 char *ptr;
380
381 for (ptr = *tmp; *ptr != '\0'; termbuf[tlen++] = *ptr++)
382 continue;
383 termbuf[tlen++] = '\0';
384 }
385 memcpy(el->el_terminal.t_buf, termbuf, TC_BUFSIZE);
386 el->el_terminal.t_loc = tlen;
387 if (el->el_terminal.t_loc + 3 >= TC_BUFSIZE) {
388 (void) fprintf(el->el_errfile,
389 "Out of termcap string space.\n");
390 return;
391 }
392 /* XXX strcpy is safe */
393 (void) strcpy(*str = &el->el_terminal.t_buf[el->el_terminal.t_loc],
394 cap);
395 el->el_terminal.t_loc += (size_t)clen + 1; /* one for \0 */
396 return;
397 }
398
399
400 /* terminal_rebuffer_display():
401 * Rebuffer the display after the screen changed size
402 */
403 static int
terminal_rebuffer_display(EditLine * el)404 terminal_rebuffer_display(EditLine *el)
405 {
406 coord_t *c = &el->el_terminal.t_size;
407
408 terminal_free_display(el);
409
410 c->h = Val(T_co);
411 c->v = Val(T_li);
412
413 if (terminal_alloc_display(el) == -1)
414 return -1;
415 return 0;
416 }
417
418 static wint_t **
terminal_alloc_buffer(EditLine * el)419 terminal_alloc_buffer(EditLine *el)
420 {
421 wint_t **b;
422 coord_t *c = &el->el_terminal.t_size;
423 int i;
424
425 b = el_calloc((size_t)(c->v + 1), sizeof(*b));
426 if (b == NULL)
427 return NULL;
428 for (i = 0; i < c->v; i++) {
429 b[i] = el_calloc((size_t)(c->h + 1), sizeof(**b));
430 if (b[i] == NULL) {
431 while (--i >= 0)
432 el_free(b[i]);
433 el_free(b);
434 return NULL;
435 }
436 }
437 b[c->v] = NULL;
438 return b;
439 }
440
441 static void
terminal_free_buffer(wint_t *** bp)442 terminal_free_buffer(wint_t ***bp)
443 {
444 wint_t **b;
445 wint_t **bufp;
446
447 if (*bp == NULL)
448 return;
449
450 b = *bp;
451 *bp = NULL;
452
453 for (bufp = b; *bufp != NULL; bufp++)
454 el_free(*bufp);
455 el_free(b);
456 }
457
458 /* terminal_alloc_display():
459 * Allocate a new display.
460 */
461 static int
terminal_alloc_display(EditLine * el)462 terminal_alloc_display(EditLine *el)
463 {
464 el->el_display = terminal_alloc_buffer(el);
465 if (el->el_display == NULL)
466 goto done;
467 el->el_vdisplay = terminal_alloc_buffer(el);
468 if (el->el_vdisplay == NULL)
469 goto done;
470 return 0;
471 done:
472 terminal_free_display(el);
473 return -1;
474 }
475
476
477 /* terminal_free_display():
478 * Free the display buffers
479 */
480 static void
terminal_free_display(EditLine * el)481 terminal_free_display(EditLine *el)
482 {
483 terminal_free_buffer(&el->el_display);
484 terminal_free_buffer(&el->el_vdisplay);
485 }
486
487
488 /* terminal_move_to_line():
489 * move to line <where> (first line == 0)
490 * as efficiently as possible
491 */
492 libedit_private void
terminal_move_to_line(EditLine * el,int where)493 terminal_move_to_line(EditLine *el, int where)
494 {
495 int del;
496
497 if (where == el->el_cursor.v)
498 return;
499
500 if (where >= el->el_terminal.t_size.v) {
501 #ifdef DEBUG_SCREEN
502 (void) fprintf(el->el_errfile,
503 "%s: where is ridiculous: %d\r\n", __func__, where);
504 #endif /* DEBUG_SCREEN */
505 return;
506 }
507 if ((del = where - el->el_cursor.v) > 0) {
508 /*
509 * We don't use DO here because some terminals are buggy
510 * if the destination is beyond bottom of the screen.
511 */
512 for (; del > 0; del--)
513 terminal__putc(el, '\n');
514 /* because the \n will become \r\n */
515 el->el_cursor.h = 0;
516 } else { /* del < 0 */
517 if (GoodStr(T_UP) && (-del > 1 || !GoodStr(T_up)))
518 terminal_tputs(el, tgoto(Str(T_UP), -del, -del), -del);
519 else {
520 if (GoodStr(T_up))
521 for (; del < 0; del++)
522 terminal_tputs(el, Str(T_up), 1);
523 }
524 }
525 el->el_cursor.v = where;/* now where is here */
526 }
527
528
529 /* terminal_move_to_char():
530 * Move to the character position specified
531 */
532 libedit_private void
terminal_move_to_char(EditLine * el,int where)533 terminal_move_to_char(EditLine *el, int where)
534 {
535 int del, i;
536
537 mc_again:
538 if (where == el->el_cursor.h)
539 return;
540
541 if (where > el->el_terminal.t_size.h) {
542 #ifdef DEBUG_SCREEN
543 (void) fprintf(el->el_errfile,
544 "%s: where is ridiculous: %d\r\n", __func__, where);
545 #endif /* DEBUG_SCREEN */
546 return;
547 }
548 if (!where) { /* if where is first column */
549 terminal__putc(el, '\r'); /* do a CR */
550 el->el_cursor.h = 0;
551 return;
552 }
553 del = where - el->el_cursor.h;
554
555 if ((del < -4 || del > 4) && GoodStr(T_ch))
556 /* go there directly */
557 terminal_tputs(el, tgoto(Str(T_ch), where, where), where);
558 else {
559 if (del > 0) { /* moving forward */
560 if ((del > 4) && GoodStr(T_RI))
561 terminal_tputs(el, tgoto(Str(T_RI), del, del),
562 del);
563 else {
564 /* if I can do tabs, use them */
565 if (EL_CAN_TAB) {
566 if ((el->el_cursor.h & 0370) !=
567 (where & ~0x7)
568 && (el->el_display[
569 el->el_cursor.v][where & 0370] !=
570 MB_FILL_CHAR)
571 ) {
572 /* if not within tab stop */
573 for (i =
574 (el->el_cursor.h & 0370);
575 i < (where & ~0x7);
576 i += 8)
577 terminal__putc(el,
578 '\t');
579 /* then tab over */
580 el->el_cursor.h = where & ~0x7;
581 }
582 }
583 /*
584 * it's usually cheaper to just write the
585 * chars, so we do.
586 */
587 /*
588 * NOTE THAT terminal_overwrite() WILL CHANGE
589 * el->el_cursor.h!!!
590 */
591 terminal_overwrite(el, &el->el_display[
592 el->el_cursor.v][el->el_cursor.h],
593 (size_t)(where - el->el_cursor.h));
594
595 }
596 } else { /* del < 0 := moving backward */
597 if ((-del > 4) && GoodStr(T_LE))
598 terminal_tputs(el, tgoto(Str(T_LE), -del, -del),
599 -del);
600 else { /* can't go directly there */
601 /*
602 * if the "cost" is greater than the "cost"
603 * from col 0
604 */
605 if (EL_CAN_TAB ?
606 ((unsigned int)-del >
607 (((unsigned int) where >> 3) +
608 (where & 07)))
609 : (-del > where)) {
610 terminal__putc(el, '\r');/* do a CR */
611 el->el_cursor.h = 0;
612 goto mc_again; /* and try again */
613 }
614 for (i = 0; i < -del; i++)
615 terminal__putc(el, '\b');
616 }
617 }
618 }
619 el->el_cursor.h = where; /* now where is here */
620 }
621
622
623 /* terminal_overwrite():
624 * Overstrike num characters
625 * Assumes MB_FILL_CHARs are present to keep the column count correct
626 */
627 libedit_private void
terminal_overwrite(EditLine * el,const wchar_t * cp,size_t n)628 terminal_overwrite(EditLine *el, const wchar_t *cp, size_t n)
629 {
630 if (n == 0)
631 return;
632
633 if (n > (size_t)el->el_terminal.t_size.h) {
634 #ifdef DEBUG_SCREEN
635 (void) fprintf(el->el_errfile,
636 "%s: n is ridiculous: %zu\r\n", __func__, n);
637 #endif /* DEBUG_SCREEN */
638 return;
639 }
640
641 do {
642 /* terminal__putc() ignores any MB_FILL_CHARs */
643 terminal__putc(el, *cp++);
644 el->el_cursor.h++;
645 } while (--n);
646
647 if (el->el_cursor.h >= el->el_terminal.t_size.h) { /* wrap? */
648 if (EL_HAS_AUTO_MARGINS) { /* yes */
649 el->el_cursor.h = 0;
650 if (el->el_cursor.v + 1 < el->el_terminal.t_size.v)
651 el->el_cursor.v++;
652 if (EL_HAS_MAGIC_MARGINS) {
653 /* force the wrap to avoid the "magic"
654 * situation */
655 wchar_t c;
656 if ((c = el->el_display[el->el_cursor.v]
657 [el->el_cursor.h]) != '\0') {
658 terminal_overwrite(el, &c, (size_t)1);
659 while (el->el_display[el->el_cursor.v]
660 [el->el_cursor.h] == MB_FILL_CHAR)
661 el->el_cursor.h++;
662 } else {
663 terminal__putc(el, ' ');
664 el->el_cursor.h = 1;
665 }
666 }
667 } else /* no wrap, but cursor stays on screen */
668 el->el_cursor.h = el->el_terminal.t_size.h - 1;
669 }
670 }
671
672
673 /* terminal_deletechars():
674 * Delete num characters
675 */
676 libedit_private void
terminal_deletechars(EditLine * el,int num)677 terminal_deletechars(EditLine *el, int num)
678 {
679 if (num <= 0)
680 return;
681
682 if (!EL_CAN_DELETE) {
683 #ifdef DEBUG_EDIT
684 (void) fprintf(el->el_errfile, " ERROR: cannot delete \n");
685 #endif /* DEBUG_EDIT */
686 return;
687 }
688 if (num > el->el_terminal.t_size.h) {
689 #ifdef DEBUG_SCREEN
690 (void) fprintf(el->el_errfile,
691 "%s: num is ridiculous: %d\r\n", __func__, num);
692 #endif /* DEBUG_SCREEN */
693 return;
694 }
695 if (GoodStr(T_DC)) /* if I have multiple delete */
696 if ((num > 1) || !GoodStr(T_dc)) { /* if dc would be more
697 * expen. */
698 terminal_tputs(el, tgoto(Str(T_DC), num, num), num);
699 return;
700 }
701 if (GoodStr(T_dm)) /* if I have delete mode */
702 terminal_tputs(el, Str(T_dm), 1);
703
704 if (GoodStr(T_dc)) /* else do one at a time */
705 while (num--)
706 terminal_tputs(el, Str(T_dc), 1);
707
708 if (GoodStr(T_ed)) /* if I have delete mode */
709 terminal_tputs(el, Str(T_ed), 1);
710 }
711
712
713 /* terminal_insertwrite():
714 * Puts terminal in insert character mode or inserts num
715 * characters in the line
716 * Assumes MB_FILL_CHARs are present to keep column count correct
717 */
718 libedit_private void
terminal_insertwrite(EditLine * el,wchar_t * cp,int num)719 terminal_insertwrite(EditLine *el, wchar_t *cp, int num)
720 {
721 if (num <= 0)
722 return;
723 if (!EL_CAN_INSERT) {
724 #ifdef DEBUG_EDIT
725 (void) fprintf(el->el_errfile, " ERROR: cannot insert \n");
726 #endif /* DEBUG_EDIT */
727 return;
728 }
729 if (num > el->el_terminal.t_size.h) {
730 #ifdef DEBUG_SCREEN
731 (void) fprintf(el->el_errfile,
732 "%s: num is ridiculous: %d\r\n", __func__, num);
733 #endif /* DEBUG_SCREEN */
734 return;
735 }
736 if (GoodStr(T_IC)) /* if I have multiple insert */
737 if ((num > 1) || !GoodStr(T_ic)) {
738 /* if ic would be more expensive */
739 terminal_tputs(el, tgoto(Str(T_IC), num, num), num);
740 terminal_overwrite(el, cp, (size_t)num);
741 /* this updates el_cursor.h */
742 return;
743 }
744 if (GoodStr(T_im) && GoodStr(T_ei)) { /* if I have insert mode */
745 terminal_tputs(el, Str(T_im), 1);
746
747 el->el_cursor.h += num;
748 do
749 terminal__putc(el, *cp++);
750 while (--num);
751
752 if (GoodStr(T_ip)) /* have to make num chars insert */
753 terminal_tputs(el, Str(T_ip), 1);
754
755 terminal_tputs(el, Str(T_ei), 1);
756 return;
757 }
758 do {
759 if (GoodStr(T_ic)) /* have to make num chars insert */
760 terminal_tputs(el, Str(T_ic), 1);
761
762 terminal__putc(el, *cp++);
763
764 el->el_cursor.h++;
765
766 if (GoodStr(T_ip)) /* have to make num chars insert */
767 terminal_tputs(el, Str(T_ip), 1);
768 /* pad the inserted char */
769
770 } while (--num);
771 }
772
773
774 /* terminal_clear_EOL():
775 * clear to end of line. There are num characters to clear
776 */
777 libedit_private void
terminal_clear_EOL(EditLine * el,int num)778 terminal_clear_EOL(EditLine *el, int num)
779 {
780 int i;
781
782 if (EL_CAN_CEOL && GoodStr(T_ce))
783 terminal_tputs(el, Str(T_ce), 1);
784 else {
785 for (i = 0; i < num; i++)
786 terminal__putc(el, ' ');
787 el->el_cursor.h += num; /* have written num spaces */
788 }
789 }
790
791
792 /* terminal_clear_screen():
793 * Clear the screen
794 */
795 libedit_private void
terminal_clear_screen(EditLine * el)796 terminal_clear_screen(EditLine *el)
797 { /* clear the whole screen and home */
798
799 if (GoodStr(T_cl))
800 /* send the clear screen code */
801 terminal_tputs(el, Str(T_cl), Val(T_li));
802 else if (GoodStr(T_ho) && GoodStr(T_cd)) {
803 terminal_tputs(el, Str(T_ho), Val(T_li)); /* home */
804 /* clear to bottom of screen */
805 terminal_tputs(el, Str(T_cd), Val(T_li));
806 } else {
807 terminal__putc(el, '\r');
808 terminal__putc(el, '\n');
809 }
810 }
811
812
813 /* terminal_beep():
814 * Beep the way the terminal wants us
815 */
816 libedit_private void
terminal_beep(EditLine * el)817 terminal_beep(EditLine *el)
818 {
819 if (GoodStr(T_bl))
820 /* what termcap says we should use */
821 terminal_tputs(el, Str(T_bl), 1);
822 else
823 terminal__putc(el, '\007'); /* an ASCII bell; ^G */
824 }
825
826
827 libedit_private void
terminal_get(EditLine * el,const char ** term)828 terminal_get(EditLine *el, const char **term)
829 {
830 *term = el->el_terminal.t_name;
831 }
832
833
834 /* terminal_set():
835 * Read in the terminal capabilities from the requested terminal
836 */
837 libedit_private int
terminal_set(EditLine * el,const char * term)838 terminal_set(EditLine *el, const char *term)
839 {
840 int i;
841 char buf[TC_BUFSIZE];
842 char *area;
843 const struct termcapstr *t;
844 sigset_t oset, nset;
845 int lins, cols;
846
847 (void) sigemptyset(&nset);
848 (void) sigaddset(&nset, SIGWINCH);
849 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
850
851 area = buf;
852
853
854 if (term == NULL)
855 term = getenv("TERM");
856
857 if (!term || !term[0])
858 term = "dumb";
859
860 if (strcmp(term, "emacs") == 0)
861 el->el_flags |= EDIT_DISABLED;
862
863 (void) memset(el->el_terminal.t_cap, 0, TC_BUFSIZE);
864
865 i = tgetent(el->el_terminal.t_cap, term);
866
867 if (i <= 0) {
868 if (i == -1)
869 (void) fprintf(el->el_errfile,
870 "Cannot read termcap database;\n");
871 else if (i == 0)
872 (void) fprintf(el->el_errfile,
873 "No entry for terminal type \"%s\";\n", term);
874 (void) fprintf(el->el_errfile,
875 "using dumb terminal settings.\n");
876 Val(T_co) = 80; /* do a dumb terminal */
877 Val(T_pt) = Val(T_km) = Val(T_li) = 0;
878 Val(T_xt) = Val(T_MT);
879 for (t = tstr; t->name != NULL; t++)
880 terminal_alloc(el, t, NULL);
881 } else {
882 /* auto/magic margins */
883 Val(T_am) = tgetflag("am");
884 Val(T_xn) = tgetflag("xn");
885 /* Can we tab */
886 Val(T_pt) = tgetflag("pt");
887 Val(T_xt) = tgetflag("xt");
888 /* do we have a meta? */
889 Val(T_km) = tgetflag("km");
890 Val(T_MT) = tgetflag("MT");
891 /* Get the size */
892 Val(T_co) = tgetnum("co");
893 Val(T_li) = tgetnum("li");
894 for (t = tstr; t->name != NULL; t++) {
895 /* XXX: some systems' tgetstr needs non const */
896 terminal_alloc(el, t, tgetstr(strchr(t->name, *t->name),
897 &area));
898 }
899 }
900
901 if (Val(T_co) < 2)
902 Val(T_co) = 80; /* just in case */
903 if (Val(T_li) < 1)
904 Val(T_li) = 24;
905
906 el->el_terminal.t_size.v = Val(T_co);
907 el->el_terminal.t_size.h = Val(T_li);
908
909 terminal_setflags(el);
910
911 /* get the correct window size */
912 (void) terminal_get_size(el, &lins, &cols);
913 if (terminal_change_size(el, lins, cols) == -1)
914 return -1;
915 (void) sigprocmask(SIG_SETMASK, &oset, NULL);
916 terminal_bind_arrow(el);
917 el->el_terminal.t_name = term;
918 return i <= 0 ? -1 : 0;
919 }
920
921
922 /* terminal_get_size():
923 * Return the new window size in lines and cols, and
924 * true if the size was changed.
925 */
926 libedit_private int
terminal_get_size(EditLine * el,int * lins,int * cols)927 terminal_get_size(EditLine *el, int *lins, int *cols)
928 {
929
930 *cols = Val(T_co);
931 *lins = Val(T_li);
932
933 #ifdef TIOCGWINSZ
934 {
935 struct winsize ws;
936 if (ioctl(el->el_infd, TIOCGWINSZ, &ws) != -1) {
937 if (ws.ws_col)
938 *cols = ws.ws_col;
939 if (ws.ws_row)
940 *lins = ws.ws_row;
941 }
942 }
943 #endif
944 #ifdef TIOCGSIZE
945 {
946 struct ttysize ts;
947 if (ioctl(el->el_infd, TIOCGSIZE, &ts) != -1) {
948 if (ts.ts_cols)
949 *cols = ts.ts_cols;
950 if (ts.ts_lines)
951 *lins = ts.ts_lines;
952 }
953 }
954 #endif
955 return Val(T_co) != *cols || Val(T_li) != *lins;
956 }
957
958
959 /* terminal_change_size():
960 * Change the size of the terminal
961 */
962 libedit_private int
terminal_change_size(EditLine * el,int lins,int cols)963 terminal_change_size(EditLine *el, int lins, int cols)
964 {
965 coord_t cur = el->el_cursor;
966 /*
967 * Just in case
968 */
969 Val(T_co) = (cols < 2) ? 80 : cols;
970 Val(T_li) = (lins < 1) ? 24 : lins;
971
972 /* re-make display buffers */
973 if (terminal_rebuffer_display(el) == -1)
974 return -1;
975 re_clear_display(el);
976 el->el_cursor = cur;
977 return 0;
978 }
979
980
981 /* terminal_init_arrow():
982 * Initialize the arrow key bindings from termcap
983 */
984 static void
terminal_init_arrow(EditLine * el)985 terminal_init_arrow(EditLine *el)
986 {
987 funckey_t *arrow = el->el_terminal.t_fkey;
988
989 arrow[A_K_DN].name = L"down";
990 arrow[A_K_DN].key = T_kd;
991 arrow[A_K_DN].fun.cmd = ED_NEXT_HISTORY;
992 arrow[A_K_DN].type = XK_CMD;
993
994 arrow[A_K_UP].name = L"up";
995 arrow[A_K_UP].key = T_ku;
996 arrow[A_K_UP].fun.cmd = ED_PREV_HISTORY;
997 arrow[A_K_UP].type = XK_CMD;
998
999 arrow[A_K_LT].name = L"left";
1000 arrow[A_K_LT].key = T_kl;
1001 arrow[A_K_LT].fun.cmd = ED_PREV_CHAR;
1002 arrow[A_K_LT].type = XK_CMD;
1003
1004 arrow[A_K_RT].name = L"right";
1005 arrow[A_K_RT].key = T_kr;
1006 arrow[A_K_RT].fun.cmd = ED_NEXT_CHAR;
1007 arrow[A_K_RT].type = XK_CMD;
1008
1009 arrow[A_K_HO].name = L"home";
1010 arrow[A_K_HO].key = T_kh;
1011 arrow[A_K_HO].fun.cmd = ED_MOVE_TO_BEG;
1012 arrow[A_K_HO].type = XK_CMD;
1013
1014 arrow[A_K_EN].name = L"end";
1015 arrow[A_K_EN].key = T_at7;
1016 arrow[A_K_EN].fun.cmd = ED_MOVE_TO_END;
1017 arrow[A_K_EN].type = XK_CMD;
1018
1019 arrow[A_K_DE].name = L"delete";
1020 arrow[A_K_DE].key = T_kD;
1021 arrow[A_K_DE].fun.cmd = ED_DELETE_NEXT_CHAR;
1022 arrow[A_K_DE].type = XK_CMD;
1023 }
1024
1025
1026 /* terminal_reset_arrow():
1027 * Reset arrow key bindings
1028 */
1029 static void
terminal_reset_arrow(EditLine * el)1030 terminal_reset_arrow(EditLine *el)
1031 {
1032 funckey_t *arrow = el->el_terminal.t_fkey;
1033 static const wchar_t strA[] = L"\033[A";
1034 static const wchar_t strB[] = L"\033[B";
1035 static const wchar_t strC[] = L"\033[C";
1036 static const wchar_t strD[] = L"\033[D";
1037 static const wchar_t strH[] = L"\033[H";
1038 static const wchar_t strF[] = L"\033[F";
1039 static const wchar_t stOA[] = L"\033OA";
1040 static const wchar_t stOB[] = L"\033OB";
1041 static const wchar_t stOC[] = L"\033OC";
1042 static const wchar_t stOD[] = L"\033OD";
1043 static const wchar_t stOH[] = L"\033OH";
1044 static const wchar_t stOF[] = L"\033OF";
1045
1046 keymacro_add(el, strA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1047 keymacro_add(el, strB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1048 keymacro_add(el, strC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1049 keymacro_add(el, strD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1050 keymacro_add(el, strH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1051 keymacro_add(el, strF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1052 keymacro_add(el, stOA, &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1053 keymacro_add(el, stOB, &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1054 keymacro_add(el, stOC, &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1055 keymacro_add(el, stOD, &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1056 keymacro_add(el, stOH, &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1057 keymacro_add(el, stOF, &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1058
1059 if (el->el_map.type != MAP_VI)
1060 return;
1061 keymacro_add(el, &strA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1062 keymacro_add(el, &strB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1063 keymacro_add(el, &strC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1064 keymacro_add(el, &strD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1065 keymacro_add(el, &strH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1066 keymacro_add(el, &strF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1067 keymacro_add(el, &stOA[1], &arrow[A_K_UP].fun, arrow[A_K_UP].type);
1068 keymacro_add(el, &stOB[1], &arrow[A_K_DN].fun, arrow[A_K_DN].type);
1069 keymacro_add(el, &stOC[1], &arrow[A_K_RT].fun, arrow[A_K_RT].type);
1070 keymacro_add(el, &stOD[1], &arrow[A_K_LT].fun, arrow[A_K_LT].type);
1071 keymacro_add(el, &stOH[1], &arrow[A_K_HO].fun, arrow[A_K_HO].type);
1072 keymacro_add(el, &stOF[1], &arrow[A_K_EN].fun, arrow[A_K_EN].type);
1073 }
1074
1075
1076 /* terminal_set_arrow():
1077 * Set an arrow key binding
1078 */
1079 libedit_private int
terminal_set_arrow(EditLine * el,const wchar_t * name,keymacro_value_t * fun,int type)1080 terminal_set_arrow(EditLine *el, const wchar_t *name, keymacro_value_t *fun,
1081 int type)
1082 {
1083 funckey_t *arrow = el->el_terminal.t_fkey;
1084 int i;
1085
1086 for (i = 0; i < A_K_NKEYS; i++)
1087 if (wcscmp(name, arrow[i].name) == 0) {
1088 arrow[i].fun = *fun;
1089 arrow[i].type = type;
1090 return 0;
1091 }
1092 return -1;
1093 }
1094
1095
1096 /* terminal_clear_arrow():
1097 * Clear an arrow key binding
1098 */
1099 libedit_private int
terminal_clear_arrow(EditLine * el,const wchar_t * name)1100 terminal_clear_arrow(EditLine *el, const wchar_t *name)
1101 {
1102 funckey_t *arrow = el->el_terminal.t_fkey;
1103 int i;
1104
1105 for (i = 0; i < A_K_NKEYS; i++)
1106 if (wcscmp(name, arrow[i].name) == 0) {
1107 arrow[i].type = XK_NOD;
1108 return 0;
1109 }
1110 return -1;
1111 }
1112
1113
1114 /* terminal_print_arrow():
1115 * Print the arrow key bindings
1116 */
1117 libedit_private void
terminal_print_arrow(EditLine * el,const wchar_t * name)1118 terminal_print_arrow(EditLine *el, const wchar_t *name)
1119 {
1120 int i;
1121 funckey_t *arrow = el->el_terminal.t_fkey;
1122
1123 for (i = 0; i < A_K_NKEYS; i++)
1124 if (*name == '\0' || wcscmp(name, arrow[i].name) == 0)
1125 if (arrow[i].type != XK_NOD)
1126 keymacro_kprint(el, arrow[i].name,
1127 &arrow[i].fun, arrow[i].type);
1128 }
1129
1130
1131 /* terminal_bind_arrow():
1132 * Bind the arrow keys
1133 */
1134 libedit_private void
terminal_bind_arrow(EditLine * el)1135 terminal_bind_arrow(EditLine *el)
1136 {
1137 el_action_t *map;
1138 const el_action_t *dmap;
1139 int i, j;
1140 char *p;
1141 funckey_t *arrow = el->el_terminal.t_fkey;
1142
1143 /* Check if the components needed are initialized */
1144 if (el->el_terminal.t_buf == NULL || el->el_map.key == NULL)
1145 return;
1146
1147 map = el->el_map.type == MAP_VI ? el->el_map.alt : el->el_map.key;
1148 dmap = el->el_map.type == MAP_VI ? el->el_map.vic : el->el_map.emacs;
1149
1150 terminal_reset_arrow(el);
1151
1152 for (i = 0; i < A_K_NKEYS; i++) {
1153 wchar_t wt_str[VISUAL_WIDTH_MAX];
1154 wchar_t *px;
1155 size_t n;
1156
1157 p = el->el_terminal.t_str[arrow[i].key];
1158 if (!p || !*p)
1159 continue;
1160 for (n = 0; n < VISUAL_WIDTH_MAX && p[n]; ++n)
1161 wt_str[n] = p[n];
1162 while (n < VISUAL_WIDTH_MAX)
1163 wt_str[n++] = '\0';
1164 px = wt_str;
1165 j = (unsigned char) *p;
1166 /*
1167 * Assign the arrow keys only if:
1168 *
1169 * 1. They are multi-character arrow keys and the user
1170 * has not re-assigned the leading character, or
1171 * has re-assigned the leading character to be
1172 * ED_SEQUENCE_LEAD_IN
1173 * 2. They are single arrow keys pointing to an
1174 * unassigned key.
1175 */
1176 if (arrow[i].type == XK_NOD)
1177 keymacro_clear(el, map, px);
1178 else {
1179 if (p[1] && (dmap[j] == map[j] ||
1180 map[j] == ED_SEQUENCE_LEAD_IN)) {
1181 keymacro_add(el, px, &arrow[i].fun,
1182 arrow[i].type);
1183 map[j] = ED_SEQUENCE_LEAD_IN;
1184 } else if (map[j] == ED_UNASSIGNED) {
1185 keymacro_clear(el, map, px);
1186 if (arrow[i].type == XK_CMD)
1187 map[j] = arrow[i].fun.cmd;
1188 else
1189 keymacro_add(el, px, &arrow[i].fun,
1190 arrow[i].type);
1191 }
1192 }
1193 }
1194 }
1195
1196 /* terminal_putc():
1197 * Add a character
1198 */
1199 static int
terminal_putc(int c)1200 terminal_putc(int c)
1201 {
1202 if (terminal_outfile == NULL)
1203 return -1;
1204 return fputc(c, terminal_outfile);
1205 }
1206
1207 static void
terminal_tputs(EditLine * el,const char * cap,int affcnt)1208 terminal_tputs(EditLine *el, const char *cap, int affcnt)
1209 {
1210 #ifdef _REENTRANT
1211 pthread_mutex_lock(&terminal_mutex);
1212 #endif
1213 terminal_outfile = el->el_outfile;
1214 (void)tputs(cap, affcnt, terminal_putc);
1215 #ifdef _REENTRANT
1216 pthread_mutex_unlock(&terminal_mutex);
1217 #endif
1218 }
1219
1220 /* terminal__putc():
1221 * Add a character
1222 */
1223 libedit_private int
terminal__putc(EditLine * el,wint_t c)1224 terminal__putc(EditLine *el, wint_t c)
1225 {
1226 char buf[MB_LEN_MAX +1];
1227 ssize_t i;
1228 if (c == MB_FILL_CHAR)
1229 return 0;
1230 if (c & EL_LITERAL)
1231 return fputs(literal_get(el, c), el->el_outfile);
1232 i = ct_encode_char(buf, (size_t)MB_LEN_MAX, c);
1233 if (i <= 0)
1234 return (int)i;
1235 buf[i] = '\0';
1236 return fputs(buf, el->el_outfile);
1237 }
1238
1239 /* terminal__flush():
1240 * Flush output
1241 */
1242 libedit_private void
terminal__flush(EditLine * el)1243 terminal__flush(EditLine *el)
1244 {
1245
1246 (void) fflush(el->el_outfile);
1247 }
1248
1249 /* terminal_writec():
1250 * Write the given character out, in a human readable form
1251 */
1252 libedit_private void
terminal_writec(EditLine * el,wint_t c)1253 terminal_writec(EditLine *el, wint_t c)
1254 {
1255 wchar_t visbuf[VISUAL_WIDTH_MAX +1];
1256 ssize_t vcnt = ct_visual_char(visbuf, VISUAL_WIDTH_MAX, c);
1257 if (vcnt < 0)
1258 vcnt = 0;
1259 visbuf[vcnt] = '\0';
1260 terminal_overwrite(el, visbuf, (size_t)vcnt);
1261 terminal__flush(el);
1262 }
1263
1264
1265 /* terminal_telltc():
1266 * Print the current termcap characteristics
1267 */
1268 libedit_private int
1269 /*ARGSUSED*/
terminal_telltc(EditLine * el,int argc,const wchar_t ** argv)1270 terminal_telltc(EditLine *el, int argc __attribute__((__unused__)),
1271 const wchar_t **argv __attribute__((__unused__)))
1272 {
1273 const struct termcapstr *t;
1274 char **ts;
1275
1276 (void) fprintf(el->el_outfile, "\n\tYour terminal has the\n");
1277 (void) fprintf(el->el_outfile, "\tfollowing characteristics:\n\n");
1278 (void) fprintf(el->el_outfile, "\tIt has %d columns and %d lines\n",
1279 Val(T_co), Val(T_li));
1280 (void) fprintf(el->el_outfile,
1281 "\tIt has %s meta key\n", EL_HAS_META ? "a" : "no");
1282 (void) fprintf(el->el_outfile,
1283 "\tIt can%suse tabs\n", EL_CAN_TAB ? " " : "not ");
1284 (void) fprintf(el->el_outfile, "\tIt %s automatic margins\n",
1285 EL_HAS_AUTO_MARGINS ? "has" : "does not have");
1286 if (EL_HAS_AUTO_MARGINS)
1287 (void) fprintf(el->el_outfile, "\tIt %s magic margins\n",
1288 EL_HAS_MAGIC_MARGINS ? "has" : "does not have");
1289
1290 for (t = tstr, ts = el->el_terminal.t_str; t->name != NULL; t++, ts++) {
1291 const char *ub;
1292 if (*ts && **ts) {
1293 ub = ct_encode_string(ct_visual_string(
1294 ct_decode_string(*ts, &el->el_scratch),
1295 &el->el_visual), &el->el_scratch);
1296 } else {
1297 ub = "(empty)";
1298 }
1299 (void) fprintf(el->el_outfile, "\t%25s (%s) == %s\n",
1300 t->long_name, t->name, ub);
1301 }
1302 (void) fputc('\n', el->el_outfile);
1303 return 0;
1304 }
1305
1306
1307 /* terminal_settc():
1308 * Change the current terminal characteristics
1309 */
1310 libedit_private int
1311 /*ARGSUSED*/
terminal_settc(EditLine * el,int argc,const wchar_t ** argv)1312 terminal_settc(EditLine *el, int argc __attribute__((__unused__)),
1313 const wchar_t **argv)
1314 {
1315 const struct termcapstr *ts;
1316 const struct termcapval *tv;
1317 char what[8], how[8];
1318
1319 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1320 return -1;
1321
1322 strncpy(what, ct_encode_string(argv[1], &el->el_scratch), sizeof(what));
1323 what[sizeof(what) - 1] = '\0';
1324 strncpy(how, ct_encode_string(argv[2], &el->el_scratch), sizeof(how));
1325 how[sizeof(how) - 1] = '\0';
1326
1327 /*
1328 * Do the strings first
1329 */
1330 for (ts = tstr; ts->name != NULL; ts++)
1331 if (strcmp(ts->name, what) == 0)
1332 break;
1333
1334 if (ts->name != NULL) {
1335 terminal_alloc(el, ts, how);
1336 terminal_setflags(el);
1337 return 0;
1338 }
1339 /*
1340 * Do the numeric ones second
1341 */
1342 for (tv = tval; tv->name != NULL; tv++)
1343 if (strcmp(tv->name, what) == 0)
1344 break;
1345
1346 if (tv->name != NULL)
1347 return -1;
1348
1349 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1350 tv == &tval[T_am] || tv == &tval[T_xn]) {
1351 if (strcmp(how, "yes") == 0)
1352 el->el_terminal.t_val[tv - tval] = 1;
1353 else if (strcmp(how, "no") == 0)
1354 el->el_terminal.t_val[tv - tval] = 0;
1355 else {
1356 (void) fprintf(el->el_errfile,
1357 "%ls: Bad value `%s'.\n", argv[0], how);
1358 return -1;
1359 }
1360 terminal_setflags(el);
1361 if (terminal_change_size(el, Val(T_li), Val(T_co)) == -1)
1362 return -1;
1363 return 0;
1364 } else {
1365 long i;
1366 char *ep;
1367
1368 i = strtol(how, &ep, 10);
1369 if (*ep != '\0') {
1370 (void) fprintf(el->el_errfile,
1371 "%ls: Bad value `%s'.\n", argv[0], how);
1372 return -1;
1373 }
1374 el->el_terminal.t_val[tv - tval] = (int) i;
1375 el->el_terminal.t_size.v = Val(T_co);
1376 el->el_terminal.t_size.h = Val(T_li);
1377 if (tv == &tval[T_co] || tv == &tval[T_li])
1378 if (terminal_change_size(el, Val(T_li), Val(T_co))
1379 == -1)
1380 return -1;
1381 return 0;
1382 }
1383 }
1384
1385
1386 /* terminal_gettc():
1387 * Get the current terminal characteristics
1388 */
1389 libedit_private int
1390 /*ARGSUSED*/
terminal_gettc(EditLine * el,int argc,char ** argv)1391 terminal_gettc(EditLine *el, int argc __attribute__((__unused__)), char **argv)
1392 {
1393 const struct termcapstr *ts;
1394 const struct termcapval *tv;
1395 char *what;
1396 void *how;
1397
1398 if (argv == NULL || argv[1] == NULL || argv[2] == NULL)
1399 return -1;
1400
1401 what = argv[1];
1402 how = argv[2];
1403
1404 /*
1405 * Do the strings first
1406 */
1407 for (ts = tstr; ts->name != NULL; ts++)
1408 if (strcmp(ts->name, what) == 0)
1409 break;
1410
1411 if (ts->name != NULL) {
1412 *(char **)how = el->el_terminal.t_str[ts - tstr];
1413 return 0;
1414 }
1415 /*
1416 * Do the numeric ones second
1417 */
1418 for (tv = tval; tv->name != NULL; tv++)
1419 if (strcmp(tv->name, what) == 0)
1420 break;
1421
1422 if (tv->name == NULL)
1423 return -1;
1424
1425 if (tv == &tval[T_pt] || tv == &tval[T_km] ||
1426 tv == &tval[T_am] || tv == &tval[T_xn]) {
1427 static char yes[] = "yes";
1428 static char no[] = "no";
1429 if (el->el_terminal.t_val[tv - tval])
1430 *(char **)how = yes;
1431 else
1432 *(char **)how = no;
1433 return 0;
1434 } else {
1435 *(int *)how = el->el_terminal.t_val[tv - tval];
1436 return 0;
1437 }
1438 }
1439
1440 /* terminal_echotc():
1441 * Print the termcap string out with variable substitution
1442 */
1443 libedit_private int
1444 /*ARGSUSED*/
terminal_echotc(EditLine * el,int argc,const wchar_t ** argv)1445 terminal_echotc(EditLine *el, int argc __attribute__((__unused__)),
1446 const wchar_t **argv)
1447 {
1448 char *cap, *scap;
1449 wchar_t *ep;
1450 int arg_need, arg_cols, arg_rows;
1451 int verbose = 0, silent = 0;
1452 char *area;
1453 static const char fmts[] = "%s\n", fmtd[] = "%d\n";
1454 const struct termcapstr *t;
1455 char buf[TC_BUFSIZE];
1456 long i;
1457
1458 area = buf;
1459
1460 if (argv == NULL || argv[1] == NULL)
1461 return -1;
1462 argv++;
1463
1464 if (argv[0][0] == '-') {
1465 switch (argv[0][1]) {
1466 case 'v':
1467 verbose = 1;
1468 break;
1469 case 's':
1470 silent = 1;
1471 break;
1472 default:
1473 /* stderror(ERR_NAME | ERR_TCUSAGE); */
1474 break;
1475 }
1476 argv++;
1477 }
1478 if (!*argv || *argv[0] == '\0')
1479 return 0;
1480 if (wcscmp(*argv, L"tabs") == 0) {
1481 (void) fprintf(el->el_outfile, fmts, EL_CAN_TAB ? "yes" : "no");
1482 return 0;
1483 } else if (wcscmp(*argv, L"meta") == 0) {
1484 (void) fprintf(el->el_outfile, fmts, Val(T_km) ? "yes" : "no");
1485 return 0;
1486 } else if (wcscmp(*argv, L"xn") == 0) {
1487 (void) fprintf(el->el_outfile, fmts, EL_HAS_MAGIC_MARGINS ?
1488 "yes" : "no");
1489 return 0;
1490 } else if (wcscmp(*argv, L"am") == 0) {
1491 (void) fprintf(el->el_outfile, fmts, EL_HAS_AUTO_MARGINS ?
1492 "yes" : "no");
1493 return 0;
1494 } else if (wcscmp(*argv, L"baud") == 0) {
1495 (void) fprintf(el->el_outfile, fmtd, (int)el->el_tty.t_speed);
1496 return 0;
1497 } else if (wcscmp(*argv, L"rows") == 0 ||
1498 wcscmp(*argv, L"lines") == 0) {
1499 (void) fprintf(el->el_outfile, fmtd, Val(T_li));
1500 return 0;
1501 } else if (wcscmp(*argv, L"cols") == 0) {
1502 (void) fprintf(el->el_outfile, fmtd, Val(T_co));
1503 return 0;
1504 }
1505 /*
1506 * Try to use our local definition first
1507 */
1508 scap = NULL;
1509 for (t = tstr; t->name != NULL; t++)
1510 if (strcmp(t->name,
1511 ct_encode_string(*argv, &el->el_scratch)) == 0) {
1512 scap = el->el_terminal.t_str[t - tstr];
1513 break;
1514 }
1515 if (t->name == NULL) {
1516 /* XXX: some systems' tgetstr needs non const */
1517 scap = tgetstr(ct_encode_string(*argv, &el->el_scratch), &area);
1518 }
1519 if (!scap || scap[0] == '\0') {
1520 if (!silent)
1521 (void) fprintf(el->el_errfile,
1522 "echotc: Termcap parameter `%ls' not found.\n",
1523 *argv);
1524 return -1;
1525 }
1526 /*
1527 * Count home many values we need for this capability.
1528 */
1529 for (cap = scap, arg_need = 0; *cap; cap++)
1530 if (*cap == '%')
1531 switch (*++cap) {
1532 case 'd':
1533 case '2':
1534 case '3':
1535 case '.':
1536 case '+':
1537 arg_need++;
1538 break;
1539 case '%':
1540 case '>':
1541 case 'i':
1542 case 'r':
1543 case 'n':
1544 case 'B':
1545 case 'D':
1546 break;
1547 default:
1548 /*
1549 * hpux has lot's of them...
1550 */
1551 if (verbose)
1552 (void) fprintf(el->el_errfile,
1553 "echotc: Warning: unknown termcap %% `%c'.\n",
1554 *cap);
1555 /* This is bad, but I won't complain */
1556 break;
1557 }
1558
1559 switch (arg_need) {
1560 case 0:
1561 argv++;
1562 if (*argv && *argv[0]) {
1563 if (!silent)
1564 (void) fprintf(el->el_errfile,
1565 "echotc: Warning: Extra argument `%ls'.\n",
1566 *argv);
1567 return -1;
1568 }
1569 terminal_tputs(el, scap, 1);
1570 break;
1571 case 1:
1572 argv++;
1573 if (!*argv || *argv[0] == '\0') {
1574 if (!silent)
1575 (void) fprintf(el->el_errfile,
1576 "echotc: Warning: Missing argument.\n");
1577 return -1;
1578 }
1579 arg_cols = 0;
1580 i = wcstol(*argv, &ep, 10);
1581 if (*ep != '\0' || i < 0) {
1582 if (!silent)
1583 (void) fprintf(el->el_errfile,
1584 "echotc: Bad value `%ls' for rows.\n",
1585 *argv);
1586 return -1;
1587 }
1588 arg_rows = (int) i;
1589 argv++;
1590 if (*argv && *argv[0]) {
1591 if (!silent)
1592 (void) fprintf(el->el_errfile,
1593 "echotc: Warning: Extra argument `%ls"
1594 "'.\n", *argv);
1595 return -1;
1596 }
1597 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), 1);
1598 break;
1599 default:
1600 /* This is wrong, but I will ignore it... */
1601 if (verbose)
1602 (void) fprintf(el->el_errfile,
1603 "echotc: Warning: Too many required arguments (%d).\n",
1604 arg_need);
1605 /* FALLTHROUGH */
1606 case 2:
1607 argv++;
1608 if (!*argv || *argv[0] == '\0') {
1609 if (!silent)
1610 (void) fprintf(el->el_errfile,
1611 "echotc: Warning: Missing argument.\n");
1612 return -1;
1613 }
1614 i = wcstol(*argv, &ep, 10);
1615 if (*ep != '\0' || i < 0) {
1616 if (!silent)
1617 (void) fprintf(el->el_errfile,
1618 "echotc: Bad value `%ls' for cols.\n",
1619 *argv);
1620 return -1;
1621 }
1622 arg_cols = (int) i;
1623 argv++;
1624 if (!*argv || *argv[0] == '\0') {
1625 if (!silent)
1626 (void) fprintf(el->el_errfile,
1627 "echotc: Warning: Missing argument.\n");
1628 return -1;
1629 }
1630 i = wcstol(*argv, &ep, 10);
1631 if (*ep != '\0' || i < 0) {
1632 if (!silent)
1633 (void) fprintf(el->el_errfile,
1634 "echotc: Bad value `%ls' for rows.\n",
1635 *argv);
1636 return -1;
1637 }
1638 arg_rows = (int) i;
1639 if (*ep != '\0') {
1640 if (!silent)
1641 (void) fprintf(el->el_errfile,
1642 "echotc: Bad value `%ls'.\n", *argv);
1643 return -1;
1644 }
1645 argv++;
1646 if (*argv && *argv[0]) {
1647 if (!silent)
1648 (void) fprintf(el->el_errfile,
1649 "echotc: Warning: Extra argument `%ls"
1650 "'.\n", *argv);
1651 return -1;
1652 }
1653 terminal_tputs(el, tgoto(scap, arg_cols, arg_rows), arg_rows);
1654 break;
1655 }
1656 return 0;
1657 }
1658