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Merge branch 'obsd-master'
[tmux.git] / status.c
blob9096dbec123f73ba7d4092aaa3d782cf091c59ae
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20 #include <sys/time.h>
21
22 #include <errno.h>
23 #include <limits.h>
24 #include <stdarg.h>
25 #include <stdlib.h>
26 #include <string.h>
27 #include <time.h>
28 #include <unistd.h>
29
30 #include "tmux.h"
31
32 static void status_message_callback(int, short, void *);
33 static void status_timer_callback(int, short, void *);
34
35 static char *status_prompt_find_history_file(void);
36 static const char *status_prompt_up_history(u_int *, u_int);
37 static const char *status_prompt_down_history(u_int *, u_int);
38 static void status_prompt_add_history(const char *, u_int);
39
40 static char *status_prompt_complete(struct client *, const char *, u_int);
41 static char *status_prompt_complete_window_menu(struct client *,
42 struct session *, const char *, u_int, char);
43
44 struct status_prompt_menu {
45 struct client *c;
46 u_int start;
47 u_int size;
48 char **list;
49 char flag;
50 };
51
52 static const char *prompt_type_strings[] = {
53 "command",
54 "search",
55 "target",
56 "window-target"
57 };
58
59 /* Status prompt history. */
60 char **status_prompt_hlist[PROMPT_NTYPES];
61 u_int status_prompt_hsize[PROMPT_NTYPES];
62
63 /* Find the history file to load/save from/to. */
64 static char *
65 status_prompt_find_history_file(void)
66 {
67 const char *home, *history_file;
68 char *path;
69
70 history_file = options_get_string(global_options, "history-file");
71 if (*history_file == '\0')
72 return (NULL);
73 if (*history_file == '/')
74 return (xstrdup(history_file));
75
76 if (history_file[0] != '~' || history_file[1] != '/')
77 return (NULL);
78 if ((home = find_home()) == NULL)
79 return (NULL);
80 xasprintf(&path, "%s%s", home, history_file + 1);
81 return (path);
82 }
83
84 /* Add loaded history item to the appropriate list. */
85 static void
86 status_prompt_add_typed_history(char *line)
87 {
88 char *typestr;
89 enum prompt_type type = PROMPT_TYPE_INVALID;
90
91 typestr = strsep(&line, ":");
92 if (line != NULL)
93 type = status_prompt_type(typestr);
94 if (type == PROMPT_TYPE_INVALID) {
95 /*
96 * Invalid types are not expected, but this provides backward
97 * compatibility with old history files.
98 */
99 if (line != NULL)
100 *(--line) = ':';
101 status_prompt_add_history(typestr, PROMPT_TYPE_COMMAND);
102 } else
103 status_prompt_add_history(line, type);
104 }
105
106 /* Load status prompt history from file. */
107 void
108 status_prompt_load_history(void)
109 {
110 FILE *f;
111 char *history_file, *line, *tmp;
112 size_t length;
113
114 if ((history_file = status_prompt_find_history_file()) == NULL)
115 return;
116 log_debug("loading history from %s", history_file);
117
118 f = fopen(history_file, "r");
119 if (f == NULL) {
120 log_debug("%s: %s", history_file, strerror(errno));
121 free(history_file);
122 return;
123 }
124 free(history_file);
125
126 for (;;) {
127 if ((line = fgetln(f, &length)) == NULL)
128 break;
129
130 if (length > 0) {
131 if (line[length - 1] == '\n') {
132 line[length - 1] = '\0';
133 status_prompt_add_typed_history(line);
134 } else {
135 tmp = xmalloc(length + 1);
136 memcpy(tmp, line, length);
137 tmp[length] = '\0';
138 status_prompt_add_typed_history(tmp);
139 free(tmp);
140 }
141 }
142 }
143 fclose(f);
144 }
145
146 /* Save status prompt history to file. */
147 void
148 status_prompt_save_history(void)
149 {
150 FILE *f;
151 u_int i, type;
152 char *history_file;
153
154 if ((history_file = status_prompt_find_history_file()) == NULL)
155 return;
156 log_debug("saving history to %s", history_file);
157
158 f = fopen(history_file, "w");
159 if (f == NULL) {
160 log_debug("%s: %s", history_file, strerror(errno));
161 free(history_file);
162 return;
163 }
164 free(history_file);
165
166 for (type = 0; type < PROMPT_NTYPES; type++) {
167 for (i = 0; i < status_prompt_hsize[type]; i++) {
168 fputs(prompt_type_strings[type], f);
169 fputc(':', f);
170 fputs(status_prompt_hlist[type][i], f);
171 fputc('\n', f);
172 }
173 }
174 fclose(f);
175
176 }
177
178 /* Status timer callback. */
179 static void
180 status_timer_callback(__unused int fd, __unused short events, void *arg)
181 {
182 struct client *c = arg;
183 struct session *s = c->session;
184 struct timeval tv;
185
186 evtimer_del(&c->status.timer);
187
188 if (s == NULL)
189 return;
190
191 if (c->message_string == NULL && c->prompt_string == NULL)
192 c->flags |= CLIENT_REDRAWSTATUS;
193
194 timerclear(&tv);
195 tv.tv_sec = options_get_number(s->options, "status-interval");
196
197 if (tv.tv_sec != 0)
198 evtimer_add(&c->status.timer, &tv);
199 log_debug("client %p, status interval %d", c, (int)tv.tv_sec);
200 }
201
202 /* Start status timer for client. */
203 void
204 status_timer_start(struct client *c)
205 {
206 struct session *s = c->session;
207
208 if (event_initialized(&c->status.timer))
209 evtimer_del(&c->status.timer);
210 else
211 evtimer_set(&c->status.timer, status_timer_callback, c);
212
213 if (s != NULL && options_get_number(s->options, "status"))
214 status_timer_callback(-1, 0, c);
215 }
216
217 /* Start status timer for all clients. */
218 void
219 status_timer_start_all(void)
220 {
221 struct client *c;
222
223 TAILQ_FOREACH(c, &clients, entry)
224 status_timer_start(c);
225 }
226
227 /* Update status cache. */
228 void
229 status_update_cache(struct session *s)
230 {
231 s->statuslines = options_get_number(s->options, "status");
232 if (s->statuslines == 0)
233 s->statusat = -1;
234 else if (options_get_number(s->options, "status-position") == 0)
235 s->statusat = 0;
236 else
237 s->statusat = 1;
238 }
239
240 /* Get screen line of status line. -1 means off. */
241 int
242 status_at_line(struct client *c)
243 {
244 struct session *s = c->session;
245
246 if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL))
247 return (-1);
248 if (s->statusat != 1)
249 return (s->statusat);
250 return (c->tty.sy - status_line_size(c));
251 }
252
253 /* Get size of status line for client's session. 0 means off. */
254 u_int
255 status_line_size(struct client *c)
256 {
257 struct session *s = c->session;
258
259 if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL))
260 return (0);
261 if (s == NULL)
262 return (options_get_number(global_s_options, "status"));
263 return (s->statuslines);
264 }
265
266 /* Get the prompt line number for client's session. 1 means at the bottom. */
267 static u_int
268 status_prompt_line_at(struct client *c)
269 {
270 struct session *s = c->session;
271
272 if (c->flags & (CLIENT_STATUSOFF|CLIENT_CONTROL))
273 return (1);
274 return (options_get_number(s->options, "message-line"));
275 }
276
277 /* Get window at window list position. */
278 struct style_range *
279 status_get_range(struct client *c, u_int x, u_int y)
280 {
281 struct status_line *sl = &c->status;
282 struct style_range *sr;
283
284 if (y >= nitems(sl->entries))
285 return (NULL);
286 TAILQ_FOREACH(sr, &sl->entries[y].ranges, entry) {
287 if (x >= sr->start && x < sr->end)
288 return (sr);
289 }
290 return (NULL);
291 }
292
293 /* Free all ranges. */
294 static void
295 status_free_ranges(struct style_ranges *srs)
296 {
297 struct style_range *sr, *sr1;
298
299 TAILQ_FOREACH_SAFE(sr, srs, entry, sr1) {
300 TAILQ_REMOVE(srs, sr, entry);
301 free(sr);
302 }
303 }
304
305 /* Save old status line. */
306 static void
307 status_push_screen(struct client *c)
308 {
309 struct status_line *sl = &c->status;
310
311 if (sl->active == &sl->screen) {
312 sl->active = xmalloc(sizeof *sl->active);
313 screen_init(sl->active, c->tty.sx, status_line_size(c), 0);
314 }
315 sl->references++;
316 }
317
318 /* Restore old status line. */
319 static void
320 status_pop_screen(struct client *c)
321 {
322 struct status_line *sl = &c->status;
323
324 if (--sl->references == 0) {
325 screen_free(sl->active);
326 free(sl->active);
327 sl->active = &sl->screen;
328 }
329 }
330
331 /* Initialize status line. */
332 void
333 status_init(struct client *c)
334 {
335 struct status_line *sl = &c->status;
336 u_int i;
337
338 for (i = 0; i < nitems(sl->entries); i++)
339 TAILQ_INIT(&sl->entries[i].ranges);
340
341 screen_init(&sl->screen, c->tty.sx, 1, 0);
342 sl->active = &sl->screen;
343 }
344
345 /* Free status line. */
346 void
347 status_free(struct client *c)
348 {
349 struct status_line *sl = &c->status;
350 u_int i;
351
352 for (i = 0; i < nitems(sl->entries); i++) {
353 status_free_ranges(&sl->entries[i].ranges);
354 free((void *)sl->entries[i].expanded);
355 }
356
357 if (event_initialized(&sl->timer))
358 evtimer_del(&sl->timer);
359
360 if (sl->active != &sl->screen) {
361 screen_free(sl->active);
362 free(sl->active);
363 }
364 screen_free(&sl->screen);
365 }
366
367 /* Draw status line for client. */
368 int
369 status_redraw(struct client *c)
370 {
371 struct status_line *sl = &c->status;
372 struct status_line_entry *sle;
373 struct session *s = c->session;
374 struct screen_write_ctx ctx;
375 struct grid_cell gc;
376 u_int lines, i, n, width = c->tty.sx;
377 int flags, force = 0, changed = 0, fg, bg;
378 struct options_entry *o;
379 union options_value *ov;
380 struct format_tree *ft;
381 char *expanded;
382
383 log_debug("%s enter", __func__);
384
385 /* Shouldn't get here if not the active screen. */
386 if (sl->active != &sl->screen)
387 fatalx("not the active screen");
388
389 /* No status line? */
390 lines = status_line_size(c);
391 if (c->tty.sy == 0 || lines == 0)
392 return (1);
393
394 /* Create format tree. */
395 flags = FORMAT_STATUS;
396 if (c->flags & CLIENT_STATUSFORCE)
397 flags |= FORMAT_FORCE;
398 ft = format_create(c, NULL, FORMAT_NONE, flags);
399 format_defaults(ft, c, NULL, NULL, NULL);
400
401 /* Set up default colour. */
402 style_apply(&gc, s->options, "status-style", ft);
403 fg = options_get_number(s->options, "status-fg");
404 if (!COLOUR_DEFAULT(fg))
405 gc.fg = fg;
406 bg = options_get_number(s->options, "status-bg");
407 if (!COLOUR_DEFAULT(bg))
408 gc.bg = bg;
409 if (!grid_cells_equal(&gc, &sl->style)) {
410 force = 1;
411 memcpy(&sl->style, &gc, sizeof sl->style);
412 }
413
414 /* Resize the target screen. */
415 if (screen_size_x(&sl->screen) != width ||
416 screen_size_y(&sl->screen) != lines) {
417 screen_resize(&sl->screen, width, lines, 0);
418 changed = force = 1;
419 }
420 screen_write_start(&ctx, &sl->screen);
421
422 /* Write the status lines. */
423 o = options_get(s->options, "status-format");
424 if (o == NULL) {
425 for (n = 0; n < width * lines; n++)
426 screen_write_putc(&ctx, &gc, ' ');
427 } else {
428 for (i = 0; i < lines; i++) {
429 screen_write_cursormove(&ctx, 0, i, 0);
430
431 ov = options_array_get(o, i);
432 if (ov == NULL) {
433 for (n = 0; n < width; n++)
434 screen_write_putc(&ctx, &gc, ' ');
435 continue;
436 }
437 sle = &sl->entries[i];
438
439 expanded = format_expand_time(ft, ov->string);
440 if (!force &&
441 sle->expanded != NULL &&
442 strcmp(expanded, sle->expanded) == 0) {
443 free(expanded);
444 continue;
445 }
446 changed = 1;
447
448 for (n = 0; n < width; n++)
449 screen_write_putc(&ctx, &gc, ' ');
450 screen_write_cursormove(&ctx, 0, i, 0);
451
452 status_free_ranges(&sle->ranges);
453 format_draw(&ctx, &gc, width, expanded, &sle->ranges,
454 0);
455
456 free(sle->expanded);
457 sle->expanded = expanded;
458 }
459 }
460 screen_write_stop(&ctx);
461
462 /* Free the format tree. */
463 format_free(ft);
464
465 /* Return if the status line has changed. */
466 log_debug("%s exit: force=%d, changed=%d", __func__, force, changed);
467 return (force || changed);
468 }
469
470 /* Set a status line message. */
471 void
472 status_message_set(struct client *c, int delay, int ignore_styles,
473 int ignore_keys, const char *fmt, ...)
474 {
475 struct timeval tv;
476 va_list ap;
477 char *s;
478
479 va_start(ap, fmt);
480 xvasprintf(&s, fmt, ap);
481 va_end(ap);
482
483 log_debug("%s: %s", __func__, s);
484
485 if (c == NULL) {
486 server_add_message("message: %s", s);
487 free(s);
488 return;
489 }
490
491 status_message_clear(c);
492 status_push_screen(c);
493 c->message_string = s;
494 server_add_message("%s message: %s", c->name, s);
495
496 /*
497 * With delay -1, the display-time option is used; zero means wait for
498 * key press; more than zero is the actual delay time in milliseconds.
499 */
500 if (delay == -1)
501 delay = options_get_number(c->session->options, "display-time");
502 if (delay > 0) {
503 tv.tv_sec = delay / 1000;
504 tv.tv_usec = (delay % 1000) * 1000L;
505
506 if (event_initialized(&c->message_timer))
507 evtimer_del(&c->message_timer);
508 evtimer_set(&c->message_timer, status_message_callback, c);
509
510 evtimer_add(&c->message_timer, &tv);
511 }
512
513 if (delay != 0)
514 c->message_ignore_keys = ignore_keys;
515 c->message_ignore_styles = ignore_styles;
516
517 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
518 c->flags |= CLIENT_REDRAWSTATUS;
519 }
520
521 /* Clear status line message. */
522 void
523 status_message_clear(struct client *c)
524 {
525 if (c->message_string == NULL)
526 return;
527
528 free(c->message_string);
529 c->message_string = NULL;
530
531 if (c->prompt_string == NULL)
532 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
533 c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */
534
535 status_pop_screen(c);
536 }
537
538 /* Clear status line message after timer expires. */
539 static void
540 status_message_callback(__unused int fd, __unused short event, void *data)
541 {
542 struct client *c = data;
543
544 status_message_clear(c);
545 }
546
547 /* Draw client message on status line of present else on last line. */
548 int
549 status_message_redraw(struct client *c)
550 {
551 struct status_line *sl = &c->status;
552 struct screen_write_ctx ctx;
553 struct session *s = c->session;
554 struct screen old_screen;
555 size_t len;
556 u_int lines, offset, messageline;
557 struct grid_cell gc;
558 struct format_tree *ft;
559
560 if (c->tty.sx == 0 || c->tty.sy == 0)
561 return (0);
562 memcpy(&old_screen, sl->active, sizeof old_screen);
563
564 lines = status_line_size(c);
565 if (lines <= 1)
566 lines = 1;
567 screen_init(sl->active, c->tty.sx, lines, 0);
568
569 messageline = status_prompt_line_at(c);
570 if (messageline > lines - 1)
571 messageline = lines - 1;
572
573 len = screen_write_strlen("%s", c->message_string);
574 if (len > c->tty.sx)
575 len = c->tty.sx;
576
577 ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
578 style_apply(&gc, s->options, "message-style", ft);
579 format_free(ft);
580
581 screen_write_start(&ctx, sl->active);
582 screen_write_fast_copy(&ctx, &sl->screen, 0, 0, c->tty.sx, lines);
583 screen_write_cursormove(&ctx, 0, messageline, 0);
584 for (offset = 0; offset < c->tty.sx; offset++)
585 screen_write_putc(&ctx, &gc, ' ');
586 screen_write_cursormove(&ctx, 0, messageline, 0);
587 if (c->message_ignore_styles)
588 screen_write_nputs(&ctx, len, &gc, "%s", c->message_string);
589 else
590 format_draw(&ctx, &gc, c->tty.sx, c->message_string, NULL, 0);
591 screen_write_stop(&ctx);
592
593 if (grid_compare(sl->active->grid, old_screen.grid) == 0) {
594 screen_free(&old_screen);
595 return (0);
596 }
597 screen_free(&old_screen);
598 return (1);
599 }
600
601 /* Enable status line prompt. */
602 void
603 status_prompt_set(struct client *c, struct cmd_find_state *fs,
604 const char *msg, const char *input, prompt_input_cb inputcb,
605 prompt_free_cb freecb, void *data, int flags, enum prompt_type prompt_type)
606 {
607 struct format_tree *ft;
608 char *tmp;
609
610 if (fs != NULL)
611 ft = format_create_from_state(NULL, c, fs);
612 else
613 ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
614
615 if (input == NULL)
616 input = "";
617 if (flags & PROMPT_NOFORMAT)
618 tmp = xstrdup(input);
619 else
620 tmp = format_expand_time(ft, input);
621
622 status_message_clear(c);
623 status_prompt_clear(c);
624 status_push_screen(c);
625
626 c->prompt_string = format_expand_time(ft, msg);
627
628 if (flags & PROMPT_INCREMENTAL) {
629 c->prompt_last = xstrdup(tmp);
630 c->prompt_buffer = utf8_fromcstr("");
631 } else {
632 c->prompt_last = NULL;
633 c->prompt_buffer = utf8_fromcstr(tmp);
634 }
635 c->prompt_index = utf8_strlen(c->prompt_buffer);
636
637 c->prompt_inputcb = inputcb;
638 c->prompt_freecb = freecb;
639 c->prompt_data = data;
640
641 memset(c->prompt_hindex, 0, sizeof c->prompt_hindex);
642
643 c->prompt_flags = flags;
644 c->prompt_type = prompt_type;
645 c->prompt_mode = PROMPT_ENTRY;
646
647 if (~flags & PROMPT_INCREMENTAL)
648 c->tty.flags |= (TTY_NOCURSOR|TTY_FREEZE);
649 c->flags |= CLIENT_REDRAWSTATUS;
650
651 if (flags & PROMPT_INCREMENTAL)
652 c->prompt_inputcb(c, c->prompt_data, "=", 0);
653
654 free(tmp);
655 format_free(ft);
656 }
657
658 /* Remove status line prompt. */
659 void
660 status_prompt_clear(struct client *c)
661 {
662 if (c->prompt_string == NULL)
663 return;
664
665 if (c->prompt_freecb != NULL && c->prompt_data != NULL)
666 c->prompt_freecb(c->prompt_data);
667
668 free(c->prompt_last);
669 c->prompt_last = NULL;
670
671 free(c->prompt_string);
672 c->prompt_string = NULL;
673
674 free(c->prompt_buffer);
675 c->prompt_buffer = NULL;
676
677 free(c->prompt_saved);
678 c->prompt_saved = NULL;
679
680 c->tty.flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
681 c->flags |= CLIENT_ALLREDRAWFLAGS; /* was frozen and may have changed */
682
683 status_pop_screen(c);
684 }
685
686 /* Update status line prompt with a new prompt string. */
687 void
688 status_prompt_update(struct client *c, const char *msg, const char *input)
689 {
690 struct format_tree *ft;
691 char *tmp;
692
693 ft = format_create(c, NULL, FORMAT_NONE, 0);
694 format_defaults(ft, c, NULL, NULL, NULL);
695
696 tmp = format_expand_time(ft, input);
697
698 free(c->prompt_string);
699 c->prompt_string = format_expand_time(ft, msg);
700
701 free(c->prompt_buffer);
702 c->prompt_buffer = utf8_fromcstr(tmp);
703 c->prompt_index = utf8_strlen(c->prompt_buffer);
704
705 memset(c->prompt_hindex, 0, sizeof c->prompt_hindex);
706
707 c->flags |= CLIENT_REDRAWSTATUS;
708
709 free(tmp);
710 format_free(ft);
711 }
712
713 /* Draw client prompt on status line of present else on last line. */
714 int
715 status_prompt_redraw(struct client *c)
716 {
717 struct status_line *sl = &c->status;
718 struct screen_write_ctx ctx;
719 struct session *s = c->session;
720 struct screen old_screen;
721 u_int i, lines, offset, left, start, width;
722 u_int pcursor, pwidth, promptline;
723 struct grid_cell gc, cursorgc;
724 struct format_tree *ft;
725
726 if (c->tty.sx == 0 || c->tty.sy == 0)
727 return (0);
728 memcpy(&old_screen, sl->active, sizeof old_screen);
729
730 lines = status_line_size(c);
731 if (lines <= 1)
732 lines = 1;
733 screen_init(sl->active, c->tty.sx, lines, 0);
734
735 promptline = status_prompt_line_at(c);
736 if (promptline > lines - 1)
737 promptline = lines - 1;
738
739 ft = format_create_defaults(NULL, c, NULL, NULL, NULL);
740 if (c->prompt_mode == PROMPT_COMMAND)
741 style_apply(&gc, s->options, "message-command-style", ft);
742 else
743 style_apply(&gc, s->options, "message-style", ft);
744 format_free(ft);
745
746 memcpy(&cursorgc, &gc, sizeof cursorgc);
747 cursorgc.attr ^= GRID_ATTR_REVERSE;
748
749 start = format_width(c->prompt_string);
750 if (start > c->tty.sx)
751 start = c->tty.sx;
752
753 screen_write_start(&ctx, sl->active);
754 screen_write_fast_copy(&ctx, &sl->screen, 0, 0, c->tty.sx, lines);
755 screen_write_cursormove(&ctx, 0, promptline, 0);
756 for (offset = 0; offset < c->tty.sx; offset++)
757 screen_write_putc(&ctx, &gc, ' ');
758 screen_write_cursormove(&ctx, 0, promptline, 0);
759 format_draw(&ctx, &gc, start, c->prompt_string, NULL, 0);
760 screen_write_cursormove(&ctx, start, promptline, 0);
761
762 left = c->tty.sx - start;
763 if (left == 0)
764 goto finished;
765
766 pcursor = utf8_strwidth(c->prompt_buffer, c->prompt_index);
767 pwidth = utf8_strwidth(c->prompt_buffer, -1);
768 if (pcursor >= left) {
769 /*
770 * The cursor would be outside the screen so start drawing
771 * with it on the right.
772 */
773 offset = (pcursor - left) + 1;
774 pwidth = left;
775 } else
776 offset = 0;
777 if (pwidth > left)
778 pwidth = left;
779 c->prompt_cursor = start + c->prompt_index - offset;
780
781 width = 0;
782 for (i = 0; c->prompt_buffer[i].size != 0; i++) {
783 if (width < offset) {
784 width += c->prompt_buffer[i].width;
785 continue;
786 }
787 if (width >= offset + pwidth)
788 break;
789 width += c->prompt_buffer[i].width;
790 if (width > offset + pwidth)
791 break;
792
793 if (i != c->prompt_index) {
794 utf8_copy(&gc.data, &c->prompt_buffer[i]);
795 screen_write_cell(&ctx, &gc);
796 } else {
797 utf8_copy(&cursorgc.data, &c->prompt_buffer[i]);
798 screen_write_cell(&ctx, &cursorgc);
799 }
800 }
801 if (sl->active->cx < screen_size_x(sl->active) && c->prompt_index >= i)
802 screen_write_putc(&ctx, &cursorgc, ' ');
803
804 finished:
805 screen_write_stop(&ctx);
806
807 if (grid_compare(sl->active->grid, old_screen.grid) == 0) {
808 screen_free(&old_screen);
809 return (0);
810 }
811 screen_free(&old_screen);
812 return (1);
813 }
814
815 /* Is this a separator? */
816 static int
817 status_prompt_in_list(const char *ws, const struct utf8_data *ud)
818 {
819 if (ud->size != 1 || ud->width != 1)
820 return (0);
821 return (strchr(ws, *ud->data) != NULL);
822 }
823
824 /* Is this a space? */
825 static int
826 status_prompt_space(const struct utf8_data *ud)
827 {
828 if (ud->size != 1 || ud->width != 1)
829 return (0);
830 return (*ud->data == ' ');
831 }
832
833 /*
834 * Translate key from vi to emacs. Return 0 to drop key, 1 to process the key
835 * as an emacs key; return 2 to append to the buffer.
836 */
837 static int
838 status_prompt_translate_key(struct client *c, key_code key, key_code *new_key)
839 {
840 if (c->prompt_mode == PROMPT_ENTRY) {
841 switch (key) {
842 case 'a'|KEYC_CTRL:
843 case 'c'|KEYC_CTRL:
844 case 'e'|KEYC_CTRL:
845 case 'g'|KEYC_CTRL:
846 case 'h'|KEYC_CTRL:
847 case '\011': /* Tab */
848 case 'k'|KEYC_CTRL:
849 case 'n'|KEYC_CTRL:
850 case 'p'|KEYC_CTRL:
851 case 't'|KEYC_CTRL:
852 case 'u'|KEYC_CTRL:
853 case 'w'|KEYC_CTRL:
854 case 'y'|KEYC_CTRL:
855 case '\n':
856 case '\r':
857 case KEYC_LEFT|KEYC_CTRL:
858 case KEYC_RIGHT|KEYC_CTRL:
859 case KEYC_BSPACE:
860 case KEYC_DC:
861 case KEYC_DOWN:
862 case KEYC_END:
863 case KEYC_HOME:
864 case KEYC_LEFT:
865 case KEYC_RIGHT:
866 case KEYC_UP:
867 *new_key = key;
868 return (1);
869 case '\033': /* Escape */
870 c->prompt_mode = PROMPT_COMMAND;
871 c->flags |= CLIENT_REDRAWSTATUS;
872 return (0);
873 }
874 *new_key = key;
875 return (2);
876 }
877
878 switch (key) {
879 case KEYC_BSPACE:
880 *new_key = KEYC_LEFT;
881 return (1);
882 case 'A':
883 case 'I':
884 case 'C':
885 case 's':
886 case 'a':
887 c->prompt_mode = PROMPT_ENTRY;
888 c->flags |= CLIENT_REDRAWSTATUS;
889 break; /* switch mode and... */
890 case 'S':
891 c->prompt_mode = PROMPT_ENTRY;
892 c->flags |= CLIENT_REDRAWSTATUS;
893 *new_key = 'u'|KEYC_CTRL;
894 return (1);
895 case 'i':
896 case '\033': /* Escape */
897 c->prompt_mode = PROMPT_ENTRY;
898 c->flags |= CLIENT_REDRAWSTATUS;
899 return (0);
900 }
901
902 switch (key) {
903 case 'A':
904 case '$':
905 *new_key = KEYC_END;
906 return (1);
907 case 'I':
908 case '0':
909 case '^':
910 *new_key = KEYC_HOME;
911 return (1);
912 case 'C':
913 case 'D':
914 *new_key = 'k'|KEYC_CTRL;
915 return (1);
916 case KEYC_BSPACE:
917 case 'X':
918 *new_key = KEYC_BSPACE;
919 return (1);
920 case 'b':
921 *new_key = 'b'|KEYC_META;
922 return (1);
923 case 'B':
924 *new_key = 'B'|KEYC_VI;
925 return (1);
926 case 'd':
927 *new_key = 'u'|KEYC_CTRL;
928 return (1);
929 case 'e':
930 *new_key = 'e'|KEYC_VI;
931 return (1);
932 case 'E':
933 *new_key = 'E'|KEYC_VI;
934 return (1);
935 case 'w':
936 *new_key = 'w'|KEYC_VI;
937 return (1);
938 case 'W':
939 *new_key = 'W'|KEYC_VI;
940 return (1);
941 case 'p':
942 *new_key = 'y'|KEYC_CTRL;
943 return (1);
944 case 'q':
945 *new_key = 'c'|KEYC_CTRL;
946 return (1);
947 case 's':
948 case KEYC_DC:
949 case 'x':
950 *new_key = KEYC_DC;
951 return (1);
952 case KEYC_DOWN:
953 case 'j':
954 *new_key = KEYC_DOWN;
955 return (1);
956 case KEYC_LEFT:
957 case 'h':
958 *new_key = KEYC_LEFT;
959 return (1);
960 case 'a':
961 case KEYC_RIGHT:
962 case 'l':
963 *new_key = KEYC_RIGHT;
964 return (1);
965 case KEYC_UP:
966 case 'k':
967 *new_key = KEYC_UP;
968 return (1);
969 case 'h'|KEYC_CTRL:
970 case 'c'|KEYC_CTRL:
971 case '\n':
972 case '\r':
973 return (1);
974 }
975 return (0);
976 }
977
978 /* Paste into prompt. */
979 static int
980 status_prompt_paste(struct client *c)
981 {
982 struct paste_buffer *pb;
983 const char *bufdata;
984 size_t size, n, bufsize;
985 u_int i;
986 struct utf8_data *ud, *udp;
987 enum utf8_state more;
988
989 size = utf8_strlen(c->prompt_buffer);
990 if (c->prompt_saved != NULL) {
991 ud = c->prompt_saved;
992 n = utf8_strlen(c->prompt_saved);
993 } else {
994 if ((pb = paste_get_top(NULL)) == NULL)
995 return (0);
996 bufdata = paste_buffer_data(pb, &bufsize);
997 ud = udp = xreallocarray(NULL, bufsize + 1, sizeof *ud);
998 for (i = 0; i != bufsize; /* nothing */) {
999 more = utf8_open(udp, bufdata[i]);
1000 if (more == UTF8_MORE) {
1001 while (++i != bufsize && more == UTF8_MORE)
1002 more = utf8_append(udp, bufdata[i]);
1003 if (more == UTF8_DONE) {
1004 udp++;
1005 continue;
1006 }
1007 i -= udp->have;
1008 }
1009 if (bufdata[i] <= 31 || bufdata[i] >= 127)
1010 break;
1011 utf8_set(udp, bufdata[i]);
1012 udp++;
1013 i++;
1014 }
1015 udp->size = 0;
1016 n = udp - ud;
1017 }
1018 if (n != 0) {
1019 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + n + 1,
1020 sizeof *c->prompt_buffer);
1021 if (c->prompt_index == size) {
1022 memcpy(c->prompt_buffer + c->prompt_index, ud,
1023 n * sizeof *c->prompt_buffer);
1024 c->prompt_index += n;
1025 c->prompt_buffer[c->prompt_index].size = 0;
1026 } else {
1027 memmove(c->prompt_buffer + c->prompt_index + n,
1028 c->prompt_buffer + c->prompt_index,
1029 (size + 1 - c->prompt_index) *
1030 sizeof *c->prompt_buffer);
1031 memcpy(c->prompt_buffer + c->prompt_index, ud,
1032 n * sizeof *c->prompt_buffer);
1033 c->prompt_index += n;
1034 }
1035 }
1036 if (ud != c->prompt_saved)
1037 free(ud);
1038 return (1);
1039 }
1040
1041 /* Finish completion. */
1042 static int
1043 status_prompt_replace_complete(struct client *c, const char *s)
1044 {
1045 char word[64], *allocated = NULL;
1046 size_t size, n, off, idx, used;
1047 struct utf8_data *first, *last, *ud;
1048
1049 /* Work out where the cursor currently is. */
1050 idx = c->prompt_index;
1051 if (idx != 0)
1052 idx--;
1053 size = utf8_strlen(c->prompt_buffer);
1054
1055 /* Find the word we are in. */
1056 first = &c->prompt_buffer[idx];
1057 while (first > c->prompt_buffer && !status_prompt_space(first))
1058 first--;
1059 while (first->size != 0 && status_prompt_space(first))
1060 first++;
1061 last = &c->prompt_buffer[idx];
1062 while (last->size != 0 && !status_prompt_space(last))
1063 last++;
1064 while (last > c->prompt_buffer && status_prompt_space(last))
1065 last--;
1066 if (last->size != 0)
1067 last++;
1068 if (last < first)
1069 return (0);
1070 if (s == NULL) {
1071 used = 0;
1072 for (ud = first; ud < last; ud++) {
1073 if (used + ud->size >= sizeof word)
1074 break;
1075 memcpy(word + used, ud->data, ud->size);
1076 used += ud->size;
1077 }
1078 if (ud != last)
1079 return (0);
1080 word[used] = '\0';
1081 }
1082
1083 /* Try to complete it. */
1084 if (s == NULL) {
1085 allocated = status_prompt_complete(c, word,
1086 first - c->prompt_buffer);
1087 if (allocated == NULL)
1088 return (0);
1089 s = allocated;
1090 }
1091
1092 /* Trim out word. */
1093 n = size - (last - c->prompt_buffer) + 1; /* with \0 */
1094 memmove(first, last, n * sizeof *c->prompt_buffer);
1095 size -= last - first;
1096
1097 /* Insert the new word. */
1098 size += strlen(s);
1099 off = first - c->prompt_buffer;
1100 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 1,
1101 sizeof *c->prompt_buffer);
1102 first = c->prompt_buffer + off;
1103 memmove(first + strlen(s), first, n * sizeof *c->prompt_buffer);
1104 for (idx = 0; idx < strlen(s); idx++)
1105 utf8_set(&first[idx], s[idx]);
1106 c->prompt_index = (first - c->prompt_buffer) + strlen(s);
1107
1108 free(allocated);
1109 return (1);
1110 }
1111
1112 /* Prompt forward to the next beginning of a word. */
1113 static void
1114 status_prompt_forward_word(struct client *c, size_t size, int vi,
1115 const char *separators)
1116 {
1117 size_t idx = c->prompt_index;
1118 int word_is_separators;
1119
1120 /* In emacs mode, skip until the first non-whitespace character. */
1121 if (!vi)
1122 while (idx != size &&
1123 status_prompt_space(&c->prompt_buffer[idx]))
1124 idx++;
1125
1126 /* Can't move forward if we're already at the end. */
1127 if (idx == size) {
1128 c->prompt_index = idx;
1129 return;
1130 }
1131
1132 /* Determine the current character class (separators or not). */
1133 word_is_separators = status_prompt_in_list(separators,
1134 &c->prompt_buffer[idx]) &&
1135 !status_prompt_space(&c->prompt_buffer[idx]);
1136
1137 /* Skip ahead until the first space or opposite character class. */
1138 do {
1139 idx++;
1140 if (status_prompt_space(&c->prompt_buffer[idx])) {
1141 /* In vi mode, go to the start of the next word. */
1142 if (vi)
1143 while (idx != size &&
1144 status_prompt_space(&c->prompt_buffer[idx]))
1145 idx++;
1146 break;
1147 }
1148 } while (idx != size && word_is_separators == status_prompt_in_list(
1149 separators, &c->prompt_buffer[idx]));
1150
1151 c->prompt_index = idx;
1152 }
1153
1154 /* Prompt forward to the next end of a word. */
1155 static void
1156 status_prompt_end_word(struct client *c, size_t size, const char *separators)
1157 {
1158 size_t idx = c->prompt_index;
1159 int word_is_separators;
1160
1161 /* Can't move forward if we're already at the end. */
1162 if (idx == size)
1163 return;
1164
1165 /* Find the next word. */
1166 do {
1167 idx++;
1168 if (idx == size) {
1169 c->prompt_index = idx;
1170 return;
1171 }
1172 } while (status_prompt_space(&c->prompt_buffer[idx]));
1173
1174 /* Determine the character class (separators or not). */
1175 word_is_separators = status_prompt_in_list(separators,
1176 &c->prompt_buffer[idx]);
1177
1178 /* Skip ahead until the next space or opposite character class. */
1179 do {
1180 idx++;
1181 if (idx == size)
1182 break;
1183 } while (!status_prompt_space(&c->prompt_buffer[idx]) &&
1184 word_is_separators == status_prompt_in_list(separators,
1185 &c->prompt_buffer[idx]));
1186
1187 /* Back up to the previous character to stop at the end of the word. */
1188 c->prompt_index = idx - 1;
1189 }
1190
1191 /* Prompt backward to the previous beginning of a word. */
1192 static void
1193 status_prompt_backward_word(struct client *c, const char *separators)
1194 {
1195 size_t idx = c->prompt_index;
1196 int word_is_separators;
1197
1198 /* Find non-whitespace. */
1199 while (idx != 0) {
1200 --idx;
1201 if (!status_prompt_space(&c->prompt_buffer[idx]))
1202 break;
1203 }
1204 word_is_separators = status_prompt_in_list(separators,
1205 &c->prompt_buffer[idx]);
1206
1207 /* Find the character before the beginning of the word. */
1208 while (idx != 0) {
1209 --idx;
1210 if (status_prompt_space(&c->prompt_buffer[idx]) ||
1211 word_is_separators != status_prompt_in_list(separators,
1212 &c->prompt_buffer[idx])) {
1213 /* Go back to the word. */
1214 idx++;
1215 break;
1216 }
1217 }
1218 c->prompt_index = idx;
1219 }
1220
1221 /* Handle keys in prompt. */
1222 int
1223 status_prompt_key(struct client *c, key_code key)
1224 {
1225 struct options *oo = c->session->options;
1226 char *s, *cp, prefix = '=';
1227 const char *histstr, *separators = NULL, *keystring;
1228 size_t size, idx;
1229 struct utf8_data tmp;
1230 int keys, word_is_separators;
1231
1232 if (c->prompt_flags & PROMPT_KEY) {
1233 keystring = key_string_lookup_key(key, 0);
1234 c->prompt_inputcb(c, c->prompt_data, keystring, 1);
1235 status_prompt_clear(c);
1236 return (0);
1237 }
1238 size = utf8_strlen(c->prompt_buffer);
1239
1240 if (c->prompt_flags & PROMPT_NUMERIC) {
1241 if (key >= '0' && key <= '9')
1242 goto append_key;
1243 s = utf8_tocstr(c->prompt_buffer);
1244 c->prompt_inputcb(c, c->prompt_data, s, 1);
1245 status_prompt_clear(c);
1246 free(s);
1247 return (1);
1248 }
1249 key &= ~KEYC_MASK_FLAGS;
1250
1251 keys = options_get_number(c->session->options, "status-keys");
1252 if (keys == MODEKEY_VI) {
1253 switch (status_prompt_translate_key(c, key, &key)) {
1254 case 1:
1255 goto process_key;
1256 case 2:
1257 goto append_key;
1258 default:
1259 return (0);
1260 }
1261 }
1262
1263 process_key:
1264 switch (key) {
1265 case KEYC_LEFT:
1266 case 'b'|KEYC_CTRL:
1267 if (c->prompt_index > 0) {
1268 c->prompt_index--;
1269 break;
1270 }
1271 break;
1272 case KEYC_RIGHT:
1273 case 'f'|KEYC_CTRL:
1274 if (c->prompt_index < size) {
1275 c->prompt_index++;
1276 break;
1277 }
1278 break;
1279 case KEYC_HOME:
1280 case 'a'|KEYC_CTRL:
1281 if (c->prompt_index != 0) {
1282 c->prompt_index = 0;
1283 break;
1284 }
1285 break;
1286 case KEYC_END:
1287 case 'e'|KEYC_CTRL:
1288 if (c->prompt_index != size) {
1289 c->prompt_index = size;
1290 break;
1291 }
1292 break;
1293 case '\011': /* Tab */
1294 if (status_prompt_replace_complete(c, NULL))
1295 goto changed;
1296 break;
1297 case KEYC_BSPACE:
1298 case 'h'|KEYC_CTRL:
1299 if (c->prompt_index != 0) {
1300 if (c->prompt_index == size)
1301 c->prompt_buffer[--c->prompt_index].size = 0;
1302 else {
1303 memmove(c->prompt_buffer + c->prompt_index - 1,
1304 c->prompt_buffer + c->prompt_index,
1305 (size + 1 - c->prompt_index) *
1306 sizeof *c->prompt_buffer);
1307 c->prompt_index--;
1308 }
1309 goto changed;
1310 }
1311 break;
1312 case KEYC_DC:
1313 case 'd'|KEYC_CTRL:
1314 if (c->prompt_index != size) {
1315 memmove(c->prompt_buffer + c->prompt_index,
1316 c->prompt_buffer + c->prompt_index + 1,
1317 (size + 1 - c->prompt_index) *
1318 sizeof *c->prompt_buffer);
1319 goto changed;
1320 }
1321 break;
1322 case 'u'|KEYC_CTRL:
1323 c->prompt_buffer[0].size = 0;
1324 c->prompt_index = 0;
1325 goto changed;
1326 case 'k'|KEYC_CTRL:
1327 if (c->prompt_index < size) {
1328 c->prompt_buffer[c->prompt_index].size = 0;
1329 goto changed;
1330 }
1331 break;
1332 case 'w'|KEYC_CTRL:
1333 separators = options_get_string(oo, "word-separators");
1334 idx = c->prompt_index;
1335
1336 /* Find non-whitespace. */
1337 while (idx != 0) {
1338 idx--;
1339 if (!status_prompt_space(&c->prompt_buffer[idx]))
1340 break;
1341 }
1342 word_is_separators = status_prompt_in_list(separators,
1343 &c->prompt_buffer[idx]);
1344
1345 /* Find the character before the beginning of the word. */
1346 while (idx != 0) {
1347 idx--;
1348 if (status_prompt_space(&c->prompt_buffer[idx]) ||
1349 word_is_separators != status_prompt_in_list(
1350 separators, &c->prompt_buffer[idx])) {
1351 /* Go back to the word. */
1352 idx++;
1353 break;
1354 }
1355 }
1356
1357 free(c->prompt_saved);
1358 c->prompt_saved = xcalloc(sizeof *c->prompt_buffer,
1359 (c->prompt_index - idx) + 1);
1360 memcpy(c->prompt_saved, c->prompt_buffer + idx,
1361 (c->prompt_index - idx) * sizeof *c->prompt_buffer);
1362
1363 memmove(c->prompt_buffer + idx,
1364 c->prompt_buffer + c->prompt_index,
1365 (size + 1 - c->prompt_index) *
1366 sizeof *c->prompt_buffer);
1367 memset(c->prompt_buffer + size - (c->prompt_index - idx),
1368 '\0', (c->prompt_index - idx) * sizeof *c->prompt_buffer);
1369 c->prompt_index = idx;
1370
1371 goto changed;
1372 case KEYC_RIGHT|KEYC_CTRL:
1373 case 'f'|KEYC_META:
1374 separators = options_get_string(oo, "word-separators");
1375 status_prompt_forward_word(c, size, 0, separators);
1376 goto changed;
1377 case 'E'|KEYC_VI:
1378 status_prompt_end_word(c, size, "");
1379 goto changed;
1380 case 'e'|KEYC_VI:
1381 separators = options_get_string(oo, "word-separators");
1382 status_prompt_end_word(c, size, separators);
1383 goto changed;
1384 case 'W'|KEYC_VI:
1385 status_prompt_forward_word(c, size, 1, "");
1386 goto changed;
1387 case 'w'|KEYC_VI:
1388 separators = options_get_string(oo, "word-separators");
1389 status_prompt_forward_word(c, size, 1, separators);
1390 goto changed;
1391 case 'B'|KEYC_VI:
1392 status_prompt_backward_word(c, "");
1393 goto changed;
1394 case KEYC_LEFT|KEYC_CTRL:
1395 case 'b'|KEYC_META:
1396 separators = options_get_string(oo, "word-separators");
1397 status_prompt_backward_word(c, separators);
1398 goto changed;
1399 case KEYC_UP:
1400 case 'p'|KEYC_CTRL:
1401 histstr = status_prompt_up_history(c->prompt_hindex,
1402 c->prompt_type);
1403 if (histstr == NULL)
1404 break;
1405 free(c->prompt_buffer);
1406 c->prompt_buffer = utf8_fromcstr(histstr);
1407 c->prompt_index = utf8_strlen(c->prompt_buffer);
1408 goto changed;
1409 case KEYC_DOWN:
1410 case 'n'|KEYC_CTRL:
1411 histstr = status_prompt_down_history(c->prompt_hindex,
1412 c->prompt_type);
1413 if (histstr == NULL)
1414 break;
1415 free(c->prompt_buffer);
1416 c->prompt_buffer = utf8_fromcstr(histstr);
1417 c->prompt_index = utf8_strlen(c->prompt_buffer);
1418 goto changed;
1419 case 'y'|KEYC_CTRL:
1420 if (status_prompt_paste(c))
1421 goto changed;
1422 break;
1423 case 't'|KEYC_CTRL:
1424 idx = c->prompt_index;
1425 if (idx < size)
1426 idx++;
1427 if (idx >= 2) {
1428 utf8_copy(&tmp, &c->prompt_buffer[idx - 2]);
1429 utf8_copy(&c->prompt_buffer[idx - 2],
1430 &c->prompt_buffer[idx - 1]);
1431 utf8_copy(&c->prompt_buffer[idx - 1], &tmp);
1432 c->prompt_index = idx;
1433 goto changed;
1434 }
1435 break;
1436 case '\r':
1437 case '\n':
1438 s = utf8_tocstr(c->prompt_buffer);
1439 if (*s != '\0')
1440 status_prompt_add_history(s, c->prompt_type);
1441 if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0)
1442 status_prompt_clear(c);
1443 free(s);
1444 break;
1445 case '\033': /* Escape */
1446 case 'c'|KEYC_CTRL:
1447 case 'g'|KEYC_CTRL:
1448 if (c->prompt_inputcb(c, c->prompt_data, NULL, 1) == 0)
1449 status_prompt_clear(c);
1450 break;
1451 case 'r'|KEYC_CTRL:
1452 if (~c->prompt_flags & PROMPT_INCREMENTAL)
1453 break;
1454 if (c->prompt_buffer[0].size == 0) {
1455 prefix = '=';
1456 free(c->prompt_buffer);
1457 c->prompt_buffer = utf8_fromcstr(c->prompt_last);
1458 c->prompt_index = utf8_strlen(c->prompt_buffer);
1459 } else
1460 prefix = '-';
1461 goto changed;
1462 case 's'|KEYC_CTRL:
1463 if (~c->prompt_flags & PROMPT_INCREMENTAL)
1464 break;
1465 if (c->prompt_buffer[0].size == 0) {
1466 prefix = '=';
1467 free(c->prompt_buffer);
1468 c->prompt_buffer = utf8_fromcstr(c->prompt_last);
1469 c->prompt_index = utf8_strlen(c->prompt_buffer);
1470 } else
1471 prefix = '+';
1472 goto changed;
1473 default:
1474 goto append_key;
1475 }
1476
1477 c->flags |= CLIENT_REDRAWSTATUS;
1478 return (0);
1479
1480 append_key:
1481 if (key <= 0x7f)
1482 utf8_set(&tmp, key);
1483 else if (KEYC_IS_UNICODE(key))
1484 utf8_to_data(key, &tmp);
1485 else
1486 return (0);
1487
1488 c->prompt_buffer = xreallocarray(c->prompt_buffer, size + 2,
1489 sizeof *c->prompt_buffer);
1490
1491 if (c->prompt_index == size) {
1492 utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp);
1493 c->prompt_index++;
1494 c->prompt_buffer[c->prompt_index].size = 0;
1495 } else {
1496 memmove(c->prompt_buffer + c->prompt_index + 1,
1497 c->prompt_buffer + c->prompt_index,
1498 (size + 1 - c->prompt_index) *
1499 sizeof *c->prompt_buffer);
1500 utf8_copy(&c->prompt_buffer[c->prompt_index], &tmp);
1501 c->prompt_index++;
1502 }
1503
1504 if (c->prompt_flags & PROMPT_SINGLE) {
1505 if (utf8_strlen(c->prompt_buffer) != 1)
1506 status_prompt_clear(c);
1507 else {
1508 s = utf8_tocstr(c->prompt_buffer);
1509 if (c->prompt_inputcb(c, c->prompt_data, s, 1) == 0)
1510 status_prompt_clear(c);
1511 free(s);
1512 }
1513 }
1514
1515 changed:
1516 c->flags |= CLIENT_REDRAWSTATUS;
1517 if (c->prompt_flags & PROMPT_INCREMENTAL) {
1518 s = utf8_tocstr(c->prompt_buffer);
1519 xasprintf(&cp, "%c%s", prefix, s);
1520 c->prompt_inputcb(c, c->prompt_data, cp, 0);
1521 free(cp);
1522 free(s);
1523 }
1524 return (0);
1525 }
1526
1527 /* Get previous line from the history. */
1528 static const char *
1529 status_prompt_up_history(u_int *idx, u_int type)
1530 {
1531 /*
1532 * History runs from 0 to size - 1. Index is from 0 to size. Zero is
1533 * empty.
1534 */
1535
1536 if (status_prompt_hsize[type] == 0 ||
1537 idx[type] == status_prompt_hsize[type])
1538 return (NULL);
1539 idx[type]++;
1540 return (status_prompt_hlist[type][status_prompt_hsize[type] - idx[type]]);
1541 }
1542
1543 /* Get next line from the history. */
1544 static const char *
1545 status_prompt_down_history(u_int *idx, u_int type)
1546 {
1547 if (status_prompt_hsize[type] == 0 || idx[type] == 0)
1548 return ("");
1549 idx[type]--;
1550 if (idx[type] == 0)
1551 return ("");
1552 return (status_prompt_hlist[type][status_prompt_hsize[type] - idx[type]]);
1553 }
1554
1555 /* Add line to the history. */
1556 static void
1557 status_prompt_add_history(const char *line, u_int type)
1558 {
1559 u_int i, oldsize, newsize, freecount, hlimit, new = 1;
1560 size_t movesize;
1561
1562 oldsize = status_prompt_hsize[type];
1563 if (oldsize > 0 &&
1564 strcmp(status_prompt_hlist[type][oldsize - 1], line) == 0)
1565 new = 0;
1566
1567 hlimit = options_get_number(global_options, "prompt-history-limit");
1568 if (hlimit > oldsize) {
1569 if (new == 0)
1570 return;
1571 newsize = oldsize + new;
1572 } else {
1573 newsize = hlimit;
1574 freecount = oldsize + new - newsize;
1575 if (freecount > oldsize)
1576 freecount = oldsize;
1577 if (freecount == 0)
1578 return;
1579 for (i = 0; i < freecount; i++)
1580 free(status_prompt_hlist[type][i]);
1581 movesize = (oldsize - freecount) *
1582 sizeof *status_prompt_hlist[type];
1583 if (movesize > 0) {
1584 memmove(&status_prompt_hlist[type][0],
1585 &status_prompt_hlist[type][freecount], movesize);
1586 }
1587 }
1588
1589 if (newsize == 0) {
1590 free(status_prompt_hlist[type]);
1591 status_prompt_hlist[type] = NULL;
1592 } else if (newsize != oldsize) {
1593 status_prompt_hlist[type] =
1594 xreallocarray(status_prompt_hlist[type], newsize,
1595 sizeof *status_prompt_hlist[type]);
1596 }
1597
1598 if (new == 1 && newsize > 0)
1599 status_prompt_hlist[type][newsize - 1] = xstrdup(line);
1600 status_prompt_hsize[type] = newsize;
1601 }
1602
1603 /* Add to completion list. */
1604 static void
1605 status_prompt_add_list(char ***list, u_int *size, const char *s)
1606 {
1607 u_int i;
1608
1609 for (i = 0; i < *size; i++) {
1610 if (strcmp((*list)[i], s) == 0)
1611 return;
1612 }
1613 *list = xreallocarray(*list, (*size) + 1, sizeof **list);
1614 (*list)[(*size)++] = xstrdup(s);
1615 }
1616
1617 /* Build completion list. */
1618 static char **
1619 status_prompt_complete_list(u_int *size, const char *s, int at_start)
1620 {
1621 char **list = NULL, *tmp;
1622 const char **layout, *value, *cp;
1623 const struct cmd_entry **cmdent;
1624 const struct options_table_entry *oe;
1625 size_t slen = strlen(s), valuelen;
1626 struct options_entry *o;
1627 struct options_array_item *a;
1628 const char *layouts[] = {
1629 "even-horizontal", "even-vertical",
1630 "main-horizontal", "main-horizontal-mirrored",
1631 "main-vertical", "main-vertical-mirrored", "tiled", NULL
1632 };
1633
1634 *size = 0;
1635 for (cmdent = cmd_table; *cmdent != NULL; cmdent++) {
1636 if (strncmp((*cmdent)->name, s, slen) == 0)
1637 status_prompt_add_list(&list, size, (*cmdent)->name);
1638 if ((*cmdent)->alias != NULL &&
1639 strncmp((*cmdent)->alias, s, slen) == 0)
1640 status_prompt_add_list(&list, size, (*cmdent)->alias);
1641 }
1642 o = options_get_only(global_options, "command-alias");
1643 if (o != NULL) {
1644 a = options_array_first(o);
1645 while (a != NULL) {
1646 value = options_array_item_value(a)->string;
1647 if ((cp = strchr(value, '=')) == NULL)
1648 goto next;
1649 valuelen = cp - value;
1650 if (slen > valuelen || strncmp(value, s, slen) != 0)
1651 goto next;
1652
1653 xasprintf(&tmp, "%.*s", (int)valuelen, value);
1654 status_prompt_add_list(&list, size, tmp);
1655 free(tmp);
1656
1657 next:
1658 a = options_array_next(a);
1659 }
1660 }
1661 if (at_start)
1662 return (list);
1663 for (oe = options_table; oe->name != NULL; oe++) {
1664 if (strncmp(oe->name, s, slen) == 0)
1665 status_prompt_add_list(&list, size, oe->name);
1666 }
1667 for (layout = layouts; *layout != NULL; layout++) {
1668 if (strncmp(*layout, s, slen) == 0)
1669 status_prompt_add_list(&list, size, *layout);
1670 }
1671 return (list);
1672 }
1673
1674 /* Find longest prefix. */
1675 static char *
1676 status_prompt_complete_prefix(char **list, u_int size)
1677 {
1678 char *out;
1679 u_int i;
1680 size_t j;
1681
1682 if (list == NULL || size == 0)
1683 return (NULL);
1684 out = xstrdup(list[0]);
1685 for (i = 1; i < size; i++) {
1686 j = strlen(list[i]);
1687 if (j > strlen(out))
1688 j = strlen(out);
1689 for (; j > 0; j--) {
1690 if (out[j - 1] != list[i][j - 1])
1691 out[j - 1] = '\0';
1692 }
1693 }
1694 return (out);
1695 }
1696
1697 /* Complete word menu callback. */
1698 static void
1699 status_prompt_menu_callback(__unused struct menu *menu, u_int idx, key_code key,
1700 void *data)
1701 {
1702 struct status_prompt_menu *spm = data;
1703 struct client *c = spm->c;
1704 u_int i;
1705 char *s;
1706
1707 if (key != KEYC_NONE) {
1708 idx += spm->start;
1709 if (spm->flag == '\0')
1710 s = xstrdup(spm->list[idx]);
1711 else
1712 xasprintf(&s, "-%c%s", spm->flag, spm->list[idx]);
1713 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
1714 free(c->prompt_buffer);
1715 c->prompt_buffer = utf8_fromcstr(s);
1716 c->prompt_index = utf8_strlen(c->prompt_buffer);
1717 c->flags |= CLIENT_REDRAWSTATUS;
1718 } else if (status_prompt_replace_complete(c, s))
1719 c->flags |= CLIENT_REDRAWSTATUS;
1720 free(s);
1721 }
1722
1723 for (i = 0; i < spm->size; i++)
1724 free(spm->list[i]);
1725 free(spm->list);
1726 }
1727
1728 /* Show complete word menu. */
1729 static int
1730 status_prompt_complete_list_menu(struct client *c, char **list, u_int size,
1731 u_int offset, char flag)
1732 {
1733 struct menu *menu;
1734 struct menu_item item;
1735 struct status_prompt_menu *spm;
1736 u_int lines = status_line_size(c), height, i;
1737 u_int py;
1738
1739 if (size <= 1)
1740 return (0);
1741 if (c->tty.sy - lines < 3)
1742 return (0);
1743
1744 spm = xmalloc(sizeof *spm);
1745 spm->c = c;
1746 spm->size = size;
1747 spm->list = list;
1748 spm->flag = flag;
1749
1750 height = c->tty.sy - lines - 2;
1751 if (height > 10)
1752 height = 10;
1753 if (height > size)
1754 height = size;
1755 spm->start = size - height;
1756
1757 menu = menu_create("");
1758 for (i = spm->start; i < size; i++) {
1759 item.name = list[i];
1760 item.key = '0' + (i - spm->start);
1761 item.command = NULL;
1762 menu_add_item(menu, &item, NULL, c, NULL);
1763 }
1764
1765 if (options_get_number(c->session->options, "status-position") == 0)
1766 py = lines;
1767 else
1768 py = c->tty.sy - 3 - height;
1769 offset += utf8_cstrwidth(c->prompt_string);
1770 if (offset > 2)
1771 offset -= 2;
1772 else
1773 offset = 0;
1774
1775 if (menu_display(menu, MENU_NOMOUSE|MENU_TAB, 0, NULL, offset, py, c,
1776 BOX_LINES_DEFAULT, NULL, NULL, NULL, NULL,
1777 status_prompt_menu_callback, spm) != 0) {
1778 menu_free(menu);
1779 free(spm);
1780 return (0);
1781 }
1782 return (1);
1783 }
1784
1785 /* Show complete word menu. */
1786 static char *
1787 status_prompt_complete_window_menu(struct client *c, struct session *s,
1788 const char *word, u_int offset, char flag)
1789 {
1790 struct menu *menu;
1791 struct menu_item item;
1792 struct status_prompt_menu *spm;
1793 struct winlink *wl;
1794 char **list = NULL, *tmp;
1795 u_int lines = status_line_size(c), height;
1796 u_int py, size = 0;
1797
1798 if (c->tty.sy - lines < 3)
1799 return (NULL);
1800
1801 spm = xmalloc(sizeof *spm);
1802 spm->c = c;
1803 spm->flag = flag;
1804
1805 height = c->tty.sy - lines - 2;
1806 if (height > 10)
1807 height = 10;
1808 spm->start = 0;
1809
1810 menu = menu_create("");
1811 RB_FOREACH(wl, winlinks, &s->windows) {
1812 if (word != NULL && *word != '\0') {
1813 xasprintf(&tmp, "%d", wl->idx);
1814 if (strncmp(tmp, word, strlen(word)) != 0) {
1815 free(tmp);
1816 continue;
1817 }
1818 free(tmp);
1819 }
1820
1821 list = xreallocarray(list, size + 1, sizeof *list);
1822 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
1823 xasprintf(&tmp, "%d (%s)", wl->idx, wl->window->name);
1824 xasprintf(&list[size++], "%d", wl->idx);
1825 } else {
1826 xasprintf(&tmp, "%s:%d (%s)", s->name, wl->idx,
1827 wl->window->name);
1828 xasprintf(&list[size++], "%s:%d", s->name, wl->idx);
1829 }
1830 item.name = tmp;
1831 item.key = '0' + size - 1;
1832 item.command = NULL;
1833 menu_add_item(menu, &item, NULL, c, NULL);
1834 free(tmp);
1835
1836 if (size == height)
1837 break;
1838 }
1839 if (size == 0) {
1840 menu_free(menu);
1841 free(spm);
1842 return (NULL);
1843 }
1844 if (size == 1) {
1845 menu_free(menu);
1846 if (flag != '\0') {
1847 xasprintf(&tmp, "-%c%s", flag, list[0]);
1848 free(list[0]);
1849 } else
1850 tmp = list[0];
1851 free(list);
1852 free(spm);
1853 return (tmp);
1854 }
1855 if (height > size)
1856 height = size;
1857
1858 spm->size = size;
1859 spm->list = list;
1860
1861 if (options_get_number(c->session->options, "status-position") == 0)
1862 py = lines;
1863 else
1864 py = c->tty.sy - 3 - height;
1865 offset += utf8_cstrwidth(c->prompt_string);
1866 if (offset > 2)
1867 offset -= 2;
1868 else
1869 offset = 0;
1870
1871 if (menu_display(menu, MENU_NOMOUSE|MENU_TAB, 0, NULL, offset, py, c,
1872 BOX_LINES_DEFAULT, NULL, NULL, NULL, NULL,
1873 status_prompt_menu_callback, spm) != 0) {
1874 menu_free(menu);
1875 free(spm);
1876 return (NULL);
1877 }
1878 return (NULL);
1879 }
1880
1881 /* Sort complete list. */
1882 static int
1883 status_prompt_complete_sort(const void *a, const void *b)
1884 {
1885 const char **aa = (const char **)a, **bb = (const char **)b;
1886
1887 return (strcmp(*aa, *bb));
1888 }
1889
1890 /* Complete a session. */
1891 static char *
1892 status_prompt_complete_session(char ***list, u_int *size, const char *s,
1893 char flag)
1894 {
1895 struct session *loop;
1896 char *out, *tmp, n[11];
1897
1898 RB_FOREACH(loop, sessions, &sessions) {
1899 if (*s == '\0' || strncmp(loop->name, s, strlen(s)) == 0) {
1900 *list = xreallocarray(*list, (*size) + 2,
1901 sizeof **list);
1902 xasprintf(&(*list)[(*size)++], "%s:", loop->name);
1903 } else if (*s == '$') {
1904 xsnprintf(n, sizeof n, "%u", loop->id);
1905 if (s[1] == '\0' ||
1906 strncmp(n, s + 1, strlen(s) - 1) == 0) {
1907 *list = xreallocarray(*list, (*size) + 2,
1908 sizeof **list);
1909 xasprintf(&(*list)[(*size)++], "$%s:", n);
1910 }
1911 }
1912 }
1913 out = status_prompt_complete_prefix(*list, *size);
1914 if (out != NULL && flag != '\0') {
1915 xasprintf(&tmp, "-%c%s", flag, out);
1916 free(out);
1917 out = tmp;
1918 }
1919 return (out);
1920 }
1921
1922 /* Complete word. */
1923 static char *
1924 status_prompt_complete(struct client *c, const char *word, u_int offset)
1925 {
1926 struct session *session;
1927 const char *s, *colon;
1928 char **list = NULL, *copy = NULL, *out = NULL;
1929 char flag = '\0';
1930 u_int size = 0, i;
1931
1932 if (*word == '\0' &&
1933 c->prompt_type != PROMPT_TYPE_TARGET &&
1934 c->prompt_type != PROMPT_TYPE_WINDOW_TARGET)
1935 return (NULL);
1936
1937 if (c->prompt_type != PROMPT_TYPE_TARGET &&
1938 c->prompt_type != PROMPT_TYPE_WINDOW_TARGET &&
1939 strncmp(word, "-t", 2) != 0 &&
1940 strncmp(word, "-s", 2) != 0) {
1941 list = status_prompt_complete_list(&size, word, offset == 0);
1942 if (size == 0)
1943 out = NULL;
1944 else if (size == 1)
1945 xasprintf(&out, "%s ", list[0]);
1946 else
1947 out = status_prompt_complete_prefix(list, size);
1948 goto found;
1949 }
1950
1951 if (c->prompt_type == PROMPT_TYPE_TARGET ||
1952 c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
1953 s = word;
1954 flag = '\0';
1955 } else {
1956 s = word + 2;
1957 flag = word[1];
1958 offset += 2;
1959 }
1960
1961 /* If this is a window completion, open the window menu. */
1962 if (c->prompt_type == PROMPT_TYPE_WINDOW_TARGET) {
1963 out = status_prompt_complete_window_menu(c, c->session, s,
1964 offset, '\0');
1965 goto found;
1966 }
1967 colon = strchr(s, ':');
1968
1969 /* If there is no colon, complete as a session. */
1970 if (colon == NULL) {
1971 out = status_prompt_complete_session(&list, &size, s, flag);
1972 goto found;
1973 }
1974
1975 /* If there is a colon but no period, find session and show a menu. */
1976 if (strchr(colon + 1, '.') == NULL) {
1977 if (*s == ':')
1978 session = c->session;
1979 else {
1980 copy = xstrdup(s);
1981 *strchr(copy, ':') = '\0';
1982 session = session_find(copy);
1983 free(copy);
1984 if (session == NULL)
1985 goto found;
1986 }
1987 out = status_prompt_complete_window_menu(c, session, colon + 1,
1988 offset, flag);
1989 if (out == NULL)
1990 return (NULL);
1991 }
1992
1993 found:
1994 if (size != 0) {
1995 qsort(list, size, sizeof *list, status_prompt_complete_sort);
1996 for (i = 0; i < size; i++)
1997 log_debug("complete %u: %s", i, list[i]);
1998 }
1999
2000 if (out != NULL && strcmp(word, out) == 0) {
2001 free(out);
2002 out = NULL;
2003 }
2004 if (out != NULL ||
2005 !status_prompt_complete_list_menu(c, list, size, offset, flag)) {
2006 for (i = 0; i < size; i++)
2007 free(list[i]);
2008 free(list);
2009 }
2010 return (out);
2011 }
2012
2013 /* Return the type of the prompt as an enum. */
2014 enum prompt_type
2015 status_prompt_type(const char *type)
2016 {
2017 u_int i;
2018
2019 for (i = 0; i < PROMPT_NTYPES; i++) {
2020 if (strcmp(type, status_prompt_type_string(i)) == 0)
2021 return (i);
2022 }
2023 return (PROMPT_TYPE_INVALID);
2024 }
2025
2026 /* Accessor for prompt_type_strings. */
2027 const char *
2028 status_prompt_type_string(u_int type)
2029 {
2030 if (type >= PROMPT_NTYPES)
2031 return ("invalid");
2032 return (prompt_type_strings[type]);
2033 }
tmux -- terminal multiplexer similar to GNU Screen