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portable: fixup merge
[tmux.git] / cmd-find.c
blob8a3499a113a48b289f2a30162b574889ca300a21
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2015 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
21 #include <fnmatch.h>
22 #include <limits.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <unistd.h>
26
27 #include "tmux.h"
28
29 static int cmd_find_session_better(struct session *, struct session *,
30 int);
31 static struct session *cmd_find_best_session(struct session **, u_int, int);
32 static int cmd_find_best_session_with_window(struct cmd_find_state *);
33 static int cmd_find_best_winlink_with_window(struct cmd_find_state *);
34
35 static const char *cmd_find_map_table(const char *[][2], const char *);
36
37 static void cmd_find_log_state(const char *, struct cmd_find_state *);
38 static int cmd_find_get_session(struct cmd_find_state *, const char *);
39 static int cmd_find_get_window(struct cmd_find_state *, const char *, int);
40 static int cmd_find_get_window_with_session(struct cmd_find_state *,
41 const char *);
42 static int cmd_find_get_pane(struct cmd_find_state *, const char *, int);
43 static int cmd_find_get_pane_with_session(struct cmd_find_state *,
44 const char *);
45 static int cmd_find_get_pane_with_window(struct cmd_find_state *,
46 const char *);
47
48 static const char *cmd_find_session_table[][2] = {
49 { NULL, NULL }
50 };
51 static const char *cmd_find_window_table[][2] = {
52 { "{start}", "^" },
53 { "{last}", "!" },
54 { "{end}", "$" },
55 { "{next}", "+" },
56 { "{previous}", "-" },
57 { NULL, NULL }
58 };
59 static const char *cmd_find_pane_table[][2] = {
60 { "{last}", "!" },
61 { "{next}", "+" },
62 { "{previous}", "-" },
63 { "{top}", "top" },
64 { "{bottom}", "bottom" },
65 { "{left}", "left" },
66 { "{right}", "right" },
67 { "{top-left}", "top-left" },
68 { "{top-right}", "top-right" },
69 { "{bottom-left}", "bottom-left" },
70 { "{bottom-right}", "bottom-right" },
71 { "{up-of}", "{up-of}" },
72 { "{down-of}", "{down-of}" },
73 { "{left-of}", "{left-of}" },
74 { "{right-of}", "{right-of}" },
75 { NULL, NULL }
76 };
77
78 /* Find pane containing client if any. */
79 static struct window_pane *
80 cmd_find_inside_pane(struct client *c)
81 {
82 struct window_pane *wp;
83 struct environ_entry *envent;
84
85 if (c == NULL)
86 return (NULL);
87
88 RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
89 if (wp->fd != -1 && strcmp(wp->tty, c->ttyname) == 0)
90 break;
91 }
92 if (wp == NULL) {
93 envent = environ_find(c->environ, "TMUX_PANE");
94 if (envent != NULL)
95 wp = window_pane_find_by_id_str(envent->value);
96 }
97 if (wp != NULL)
98 log_debug("%s: got pane %%%u (%s)", __func__, wp->id, wp->tty);
99 return (wp);
100 }
101
102 /* Is this client better? */
103 static int
104 cmd_find_client_better(struct client *c, struct client *than)
105 {
106 if (than == NULL)
107 return (1);
108 return (timercmp(&c->activity_time, &than->activity_time, >));
109 }
110
111 /* Find best client for session. */
112 struct client *
113 cmd_find_best_client(struct session *s)
114 {
115 struct client *c_loop, *c;
116
117 if (s->attached == 0)
118 s = NULL;
119
120 c = NULL;
121 TAILQ_FOREACH(c_loop, &clients, entry) {
122 if (c_loop->session == NULL)
123 continue;
124 if (s != NULL && c_loop->session != s)
125 continue;
126 if (cmd_find_client_better(c_loop, c))
127 c = c_loop;
128 }
129 return (c);
130 }
131
132 /* Is this session better? */
133 static int
134 cmd_find_session_better(struct session *s, struct session *than, int flags)
135 {
136 int attached;
137
138 if (than == NULL)
139 return (1);
140 if (flags & CMD_FIND_PREFER_UNATTACHED) {
141 attached = (than->attached != 0);
142 if (attached && s->attached == 0)
143 return (1);
144 else if (!attached && s->attached != 0)
145 return (0);
146 }
147 return (timercmp(&s->activity_time, &than->activity_time, >));
148 }
149
150 /* Find best session from a list, or all if list is NULL. */
151 static struct session *
152 cmd_find_best_session(struct session **slist, u_int ssize, int flags)
153 {
154 struct session *s_loop, *s;
155 u_int i;
156
157 log_debug("%s: %u sessions to try", __func__, ssize);
158
159 s = NULL;
160 if (slist != NULL) {
161 for (i = 0; i < ssize; i++) {
162 if (cmd_find_session_better(slist[i], s, flags))
163 s = slist[i];
164 }
165 } else {
166 RB_FOREACH(s_loop, sessions, &sessions) {
167 if (cmd_find_session_better(s_loop, s, flags))
168 s = s_loop;
169 }
170 }
171 return (s);
172 }
173
174 /* Find best session and winlink for window. */
175 static int
176 cmd_find_best_session_with_window(struct cmd_find_state *fs)
177 {
178 struct session **slist = NULL;
179 u_int ssize;
180 struct session *s;
181
182 log_debug("%s: window is @%u", __func__, fs->w->id);
183
184 ssize = 0;
185 RB_FOREACH(s, sessions, &sessions) {
186 if (!session_has(s, fs->w))
187 continue;
188 slist = xreallocarray(slist, ssize + 1, sizeof *slist);
189 slist[ssize++] = s;
190 }
191 if (ssize == 0)
192 goto fail;
193 fs->s = cmd_find_best_session(slist, ssize, fs->flags);
194 if (fs->s == NULL)
195 goto fail;
196 free(slist);
197 return (cmd_find_best_winlink_with_window(fs));
198
199 fail:
200 free(slist);
201 return (-1);
202 }
203
204 /*
205 * Find the best winlink for a window (the current if it contains the window,
206 * otherwise the first).
207 */
208 static int
209 cmd_find_best_winlink_with_window(struct cmd_find_state *fs)
210 {
211 struct winlink *wl, *wl_loop;
212
213 log_debug("%s: window is @%u", __func__, fs->w->id);
214
215 wl = NULL;
216 if (fs->s->curw != NULL && fs->s->curw->window == fs->w)
217 wl = fs->s->curw;
218 else {
219 RB_FOREACH(wl_loop, winlinks, &fs->s->windows) {
220 if (wl_loop->window == fs->w) {
221 wl = wl_loop;
222 break;
223 }
224 }
225 }
226 if (wl == NULL)
227 return (-1);
228 fs->wl = wl;
229 fs->idx = fs->wl->idx;
230 return (0);
231 }
232
233 /* Maps string in table. */
234 static const char *
235 cmd_find_map_table(const char *table[][2], const char *s)
236 {
237 u_int i;
238
239 for (i = 0; table[i][0] != NULL; i++) {
240 if (strcmp(s, table[i][0]) == 0)
241 return (table[i][1]);
242 }
243 return (s);
244 }
245
246 /* Find session from string. Fills in s. */
247 static int
248 cmd_find_get_session(struct cmd_find_state *fs, const char *session)
249 {
250 struct session *s, *s_loop;
251 struct client *c;
252
253 log_debug("%s: %s", __func__, session);
254
255 /* Check for session ids starting with $. */
256 if (*session == '$') {
257 fs->s = session_find_by_id_str(session);
258 if (fs->s == NULL)
259 return (-1);
260 return (0);
261 }
262
263 /* Look for exactly this session. */
264 fs->s = session_find(session);
265 if (fs->s != NULL)
266 return (0);
267
268 /* Look for as a client. */
269 c = cmd_find_client(NULL, session, 1);
270 if (c != NULL && c->session != NULL) {
271 fs->s = c->session;
272 return (0);
273 }
274
275 /* Stop now if exact only. */
276 if (fs->flags & CMD_FIND_EXACT_SESSION)
277 return (-1);
278
279 /* Otherwise look for prefix. */
280 s = NULL;
281 RB_FOREACH(s_loop, sessions, &sessions) {
282 if (strncmp(session, s_loop->name, strlen(session)) == 0) {
283 if (s != NULL)
284 return (-1);
285 s = s_loop;
286 }
287 }
288 if (s != NULL) {
289 fs->s = s;
290 return (0);
291 }
292
293 /* Then as a pattern. */
294 s = NULL;
295 RB_FOREACH(s_loop, sessions, &sessions) {
296 if (fnmatch(session, s_loop->name, 0) == 0) {
297 if (s != NULL)
298 return (-1);
299 s = s_loop;
300 }
301 }
302 if (s != NULL) {
303 fs->s = s;
304 return (0);
305 }
306
307 return (-1);
308 }
309
310 /* Find window from string. Fills in s, wl, w. */
311 static int
312 cmd_find_get_window(struct cmd_find_state *fs, const char *window, int only)
313 {
314 log_debug("%s: %s", __func__, window);
315
316 /* Check for window ids starting with @. */
317 if (*window == '@') {
318 fs->w = window_find_by_id_str(window);
319 if (fs->w == NULL)
320 return (-1);
321 return (cmd_find_best_session_with_window(fs));
322 }
323
324 /* Not a window id, so use the current session. */
325 fs->s = fs->current->s;
326
327 /* We now only need to find the winlink in this session. */
328 if (cmd_find_get_window_with_session(fs, window) == 0)
329 return (0);
330
331 /* Otherwise try as a session itself. */
332 if (!only && cmd_find_get_session(fs, window) == 0) {
333 fs->wl = fs->s->curw;
334 fs->w = fs->wl->window;
335 if (~fs->flags & CMD_FIND_WINDOW_INDEX)
336 fs->idx = fs->wl->idx;
337 return (0);
338 }
339
340 return (-1);
341 }
342
343 /*
344 * Find window from string, assuming it is in given session. Needs s, fills in
345 * wl and w.
346 */
347 static int
348 cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
349 {
350 struct winlink *wl;
351 const char *errstr;
352 int idx, n, exact;
353 struct session *s;
354
355 log_debug("%s: %s", __func__, window);
356 exact = (fs->flags & CMD_FIND_EXACT_WINDOW);
357
358 /*
359 * Start with the current window as the default. So if only an index is
360 * found, the window will be the current.
361 */
362 fs->wl = fs->s->curw;
363 fs->w = fs->wl->window;
364
365 /* Check for window ids starting with @. */
366 if (*window == '@') {
367 fs->w = window_find_by_id_str(window);
368 if (fs->w == NULL || !session_has(fs->s, fs->w))
369 return (-1);
370 return (cmd_find_best_winlink_with_window(fs));
371 }
372
373 /* Try as an offset. */
374 if (!exact && (window[0] == '+' || window[0] == '-')) {
375 if (window[1] != '\0')
376 n = strtonum(window + 1, 1, INT_MAX, NULL);
377 else
378 n = 1;
379 s = fs->s;
380 if (fs->flags & CMD_FIND_WINDOW_INDEX) {
381 if (window[0] == '+') {
382 if (INT_MAX - s->curw->idx < n)
383 return (-1);
384 fs->idx = s->curw->idx + n;
385 } else {
386 if (n > s->curw->idx)
387 return (-1);
388 fs->idx = s->curw->idx - n;
389 }
390 return (0);
391 }
392 if (window[0] == '+')
393 fs->wl = winlink_next_by_number(s->curw, s, n);
394 else
395 fs->wl = winlink_previous_by_number(s->curw, s, n);
396 if (fs->wl != NULL) {
397 fs->idx = fs->wl->idx;
398 fs->w = fs->wl->window;
399 return (0);
400 }
401 }
402
403 /* Try special characters. */
404 if (!exact) {
405 if (strcmp(window, "!") == 0) {
406 fs->wl = TAILQ_FIRST(&fs->s->lastw);
407 if (fs->wl == NULL)
408 return (-1);
409 fs->idx = fs->wl->idx;
410 fs->w = fs->wl->window;
411 return (0);
412 } else if (strcmp(window, "^") == 0) {
413 fs->wl = RB_MIN(winlinks, &fs->s->windows);
414 if (fs->wl == NULL)
415 return (-1);
416 fs->idx = fs->wl->idx;
417 fs->w = fs->wl->window;
418 return (0);
419 } else if (strcmp(window, "$") == 0) {
420 fs->wl = RB_MAX(winlinks, &fs->s->windows);
421 if (fs->wl == NULL)
422 return (-1);
423 fs->idx = fs->wl->idx;
424 fs->w = fs->wl->window;
425 return (0);
426 }
427 }
428
429 /* First see if this is a valid window index in this session. */
430 if (window[0] != '+' && window[0] != '-') {
431 idx = strtonum(window, 0, INT_MAX, &errstr);
432 if (errstr == NULL) {
433 fs->wl = winlink_find_by_index(&fs->s->windows, idx);
434 if (fs->wl != NULL) {
435 fs->idx = fs->wl->idx;
436 fs->w = fs->wl->window;
437 return (0);
438 }
439 if (fs->flags & CMD_FIND_WINDOW_INDEX) {
440 fs->idx = idx;
441 return (0);
442 }
443 }
444 }
445
446 /* Look for exact matches, error if more than one. */
447 fs->wl = NULL;
448 RB_FOREACH(wl, winlinks, &fs->s->windows) {
449 if (strcmp(window, wl->window->name) == 0) {
450 if (fs->wl != NULL)
451 return (-1);
452 fs->wl = wl;
453 }
454 }
455 if (fs->wl != NULL) {
456 fs->idx = fs->wl->idx;
457 fs->w = fs->wl->window;
458 return (0);
459 }
460
461 /* Stop now if exact only. */
462 if (exact)
463 return (-1);
464
465 /* Try as the start of a window name, error if multiple. */
466 fs->wl = NULL;
467 RB_FOREACH(wl, winlinks, &fs->s->windows) {
468 if (strncmp(window, wl->window->name, strlen(window)) == 0) {
469 if (fs->wl != NULL)
470 return (-1);
471 fs->wl = wl;
472 }
473 }
474 if (fs->wl != NULL) {
475 fs->idx = fs->wl->idx;
476 fs->w = fs->wl->window;
477 return (0);
478 }
479
480 /* Now look for pattern matches, again error if multiple. */
481 fs->wl = NULL;
482 RB_FOREACH(wl, winlinks, &fs->s->windows) {
483 if (fnmatch(window, wl->window->name, 0) == 0) {
484 if (fs->wl != NULL)
485 return (-1);
486 fs->wl = wl;
487 }
488 }
489 if (fs->wl != NULL) {
490 fs->idx = fs->wl->idx;
491 fs->w = fs->wl->window;
492 return (0);
493 }
494
495 return (-1);
496 }
497
498 /* Find pane from string. Fills in s, wl, w, wp. */
499 static int
500 cmd_find_get_pane(struct cmd_find_state *fs, const char *pane, int only)
501 {
502 log_debug("%s: %s", __func__, pane);
503
504 /* Check for pane ids starting with %. */
505 if (*pane == '%') {
506 fs->wp = window_pane_find_by_id_str(pane);
507 if (fs->wp == NULL)
508 return (-1);
509 fs->w = fs->wp->window;
510 return (cmd_find_best_session_with_window(fs));
511 }
512
513 /* Not a pane id, so try the current session and window. */
514 fs->s = fs->current->s;
515 fs->wl = fs->current->wl;
516 fs->idx = fs->current->idx;
517 fs->w = fs->current->w;
518
519 /* We now only need to find the pane in this window. */
520 if (cmd_find_get_pane_with_window(fs, pane) == 0)
521 return (0);
522
523 /* Otherwise try as a window itself (this will also try as session). */
524 if (!only && cmd_find_get_window(fs, pane, 0) == 0) {
525 fs->wp = fs->w->active;
526 return (0);
527 }
528
529 return (-1);
530 }
531
532 /*
533 * Find pane from string, assuming it is in given session. Needs s, fills in wl
534 * and w and wp.
535 */
536 static int
537 cmd_find_get_pane_with_session(struct cmd_find_state *fs, const char *pane)
538 {
539 log_debug("%s: %s", __func__, pane);
540
541 /* Check for pane ids starting with %. */
542 if (*pane == '%') {
543 fs->wp = window_pane_find_by_id_str(pane);
544 if (fs->wp == NULL)
545 return (-1);
546 fs->w = fs->wp->window;
547 return (cmd_find_best_winlink_with_window(fs));
548 }
549
550 /* Otherwise use the current window. */
551 fs->wl = fs->s->curw;
552 fs->idx = fs->wl->idx;
553 fs->w = fs->wl->window;
554
555 /* Now we just need to look up the pane. */
556 return (cmd_find_get_pane_with_window(fs, pane));
557 }
558
559 /*
560 * Find pane from string, assuming it is in the given window. Needs w, fills in
561 * wp.
562 */
563 static int
564 cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane)
565 {
566 const char *errstr;
567 int idx;
568 struct window_pane *wp;
569 u_int n;
570
571 log_debug("%s: %s", __func__, pane);
572
573 /* Check for pane ids starting with %. */
574 if (*pane == '%') {
575 fs->wp = window_pane_find_by_id_str(pane);
576 if (fs->wp == NULL)
577 return (-1);
578 if (fs->wp->window != fs->w)
579 return (-1);
580 return (0);
581 }
582
583 /* Try special characters. */
584 if (strcmp(pane, "!") == 0) {
585 fs->wp = TAILQ_FIRST(&fs->w->last_panes);
586 if (fs->wp == NULL)
587 return (-1);
588 return (0);
589 } else if (strcmp(pane, "{up-of}") == 0) {
590 fs->wp = window_pane_find_up(fs->w->active);
591 if (fs->wp == NULL)
592 return (-1);
593 return (0);
594 } else if (strcmp(pane, "{down-of}") == 0) {
595 fs->wp = window_pane_find_down(fs->w->active);
596 if (fs->wp == NULL)
597 return (-1);
598 return (0);
599 } else if (strcmp(pane, "{left-of}") == 0) {
600 fs->wp = window_pane_find_left(fs->w->active);
601 if (fs->wp == NULL)
602 return (-1);
603 return (0);
604 } else if (strcmp(pane, "{right-of}") == 0) {
605 fs->wp = window_pane_find_right(fs->w->active);
606 if (fs->wp == NULL)
607 return (-1);
608 return (0);
609 }
610
611 /* Try as an offset. */
612 if (pane[0] == '+' || pane[0] == '-') {
613 if (pane[1] != '\0')
614 n = strtonum(pane + 1, 1, INT_MAX, NULL);
615 else
616 n = 1;
617 wp = fs->w->active;
618 if (pane[0] == '+')
619 fs->wp = window_pane_next_by_number(fs->w, wp, n);
620 else
621 fs->wp = window_pane_previous_by_number(fs->w, wp, n);
622 if (fs->wp != NULL)
623 return (0);
624 }
625
626 /* Get pane by index. */
627 idx = strtonum(pane, 0, INT_MAX, &errstr);
628 if (errstr == NULL) {
629 fs->wp = window_pane_at_index(fs->w, idx);
630 if (fs->wp != NULL)
631 return (0);
632 }
633
634 /* Try as a description. */
635 fs->wp = window_find_string(fs->w, pane);
636 if (fs->wp != NULL)
637 return (0);
638
639 return (-1);
640 }
641
642 /* Clear state. */
643 void
644 cmd_find_clear_state(struct cmd_find_state *fs, int flags)
645 {
646 memset(fs, 0, sizeof *fs);
647
648 fs->flags = flags;
649
650 fs->idx = -1;
651 }
652
653 /* Check if state is empty. */
654 int
655 cmd_find_empty_state(struct cmd_find_state *fs)
656 {
657 if (fs->s == NULL && fs->wl == NULL && fs->w == NULL && fs->wp == NULL)
658 return (1);
659 return (0);
660 }
661
662 /* Check if a state if valid. */
663 int
664 cmd_find_valid_state(struct cmd_find_state *fs)
665 {
666 struct winlink *wl;
667
668 if (fs->s == NULL || fs->wl == NULL || fs->w == NULL || fs->wp == NULL)
669 return (0);
670
671 if (!session_alive(fs->s))
672 return (0);
673
674 RB_FOREACH(wl, winlinks, &fs->s->windows) {
675 if (wl->window == fs->w && wl == fs->wl)
676 break;
677 }
678 if (wl == NULL)
679 return (0);
680
681 if (fs->w != fs->wl->window)
682 return (0);
683
684 return (window_has_pane(fs->w, fs->wp));
685 }
686
687 /* Copy a state. */
688 void
689 cmd_find_copy_state(struct cmd_find_state *dst, struct cmd_find_state *src)
690 {
691 dst->s = src->s;
692 dst->wl = src->wl;
693 dst->idx = src->idx;
694 dst->w = src->w;
695 dst->wp = src->wp;
696 }
697
698 /* Log the result. */
699 static void
700 cmd_find_log_state(const char *prefix, struct cmd_find_state *fs)
701 {
702 if (fs->s != NULL)
703 log_debug("%s: s=$%u %s", prefix, fs->s->id, fs->s->name);
704 else
705 log_debug("%s: s=none", prefix);
706 if (fs->wl != NULL) {
707 log_debug("%s: wl=%u %d w=@%u %s", prefix, fs->wl->idx,
708 fs->wl->window == fs->w, fs->w->id, fs->w->name);
709 } else
710 log_debug("%s: wl=none", prefix);
711 if (fs->wp != NULL)
712 log_debug("%s: wp=%%%u", prefix, fs->wp->id);
713 else
714 log_debug("%s: wp=none", prefix);
715 if (fs->idx != -1)
716 log_debug("%s: idx=%d", prefix, fs->idx);
717 else
718 log_debug("%s: idx=none", prefix);
719 }
720
721 /* Find state from a session. */
722 void
723 cmd_find_from_session(struct cmd_find_state *fs, struct session *s, int flags)
724 {
725 cmd_find_clear_state(fs, flags);
726
727 fs->s = s;
728 fs->wl = fs->s->curw;
729 fs->w = fs->wl->window;
730 fs->wp = fs->w->active;
731
732 cmd_find_log_state(__func__, fs);
733 }
734
735 /* Find state from a winlink. */
736 void
737 cmd_find_from_winlink(struct cmd_find_state *fs, struct winlink *wl, int flags)
738 {
739 cmd_find_clear_state(fs, flags);
740
741 fs->s = wl->session;
742 fs->wl = wl;
743 fs->w = wl->window;
744 fs->wp = wl->window->active;
745
746 cmd_find_log_state(__func__, fs);
747 }
748
749 /* Find state from a session and window. */
750 int
751 cmd_find_from_session_window(struct cmd_find_state *fs, struct session *s,
752 struct window *w, int flags)
753 {
754 cmd_find_clear_state(fs, flags);
755
756 fs->s = s;
757 fs->w = w;
758 if (cmd_find_best_winlink_with_window(fs) != 0) {
759 cmd_find_clear_state(fs, flags);
760 return (-1);
761 }
762 fs->wp = fs->w->active;
763
764 cmd_find_log_state(__func__, fs);
765 return (0);
766 }
767
768 /* Find state from a window. */
769 int
770 cmd_find_from_window(struct cmd_find_state *fs, struct window *w, int flags)
771 {
772 cmd_find_clear_state(fs, flags);
773
774 fs->w = w;
775 if (cmd_find_best_session_with_window(fs) != 0) {
776 cmd_find_clear_state(fs, flags);
777 return (-1);
778 }
779 if (cmd_find_best_winlink_with_window(fs) != 0) {
780 cmd_find_clear_state(fs, flags);
781 return (-1);
782 }
783 fs->wp = fs->w->active;
784
785 cmd_find_log_state(__func__, fs);
786 return (0);
787 }
788
789 /* Find state from a winlink and pane. */
790 void
791 cmd_find_from_winlink_pane(struct cmd_find_state *fs, struct winlink *wl,
792 struct window_pane *wp, int flags)
793 {
794 cmd_find_clear_state(fs, flags);
795
796 fs->s = wl->session;
797 fs->wl = wl;
798 fs->idx = fs->wl->idx;
799 fs->w = fs->wl->window;
800 fs->wp = wp;
801
802 cmd_find_log_state(__func__, fs);
803 }
804
805 /* Find state from a pane. */
806 int
807 cmd_find_from_pane(struct cmd_find_state *fs, struct window_pane *wp, int flags)
808 {
809 if (cmd_find_from_window(fs, wp->window, flags) != 0)
810 return (-1);
811 fs->wp = wp;
812
813 cmd_find_log_state(__func__, fs);
814 return (0);
815 }
816
817 /* Find state from nothing. */
818 int
819 cmd_find_from_nothing(struct cmd_find_state *fs, int flags)
820 {
821 cmd_find_clear_state(fs, flags);
822
823 fs->s = cmd_find_best_session(NULL, 0, flags);
824 if (fs->s == NULL) {
825 cmd_find_clear_state(fs, flags);
826 return (-1);
827 }
828 fs->wl = fs->s->curw;
829 fs->idx = fs->wl->idx;
830 fs->w = fs->wl->window;
831 fs->wp = fs->w->active;
832
833 cmd_find_log_state(__func__, fs);
834 return (0);
835 }
836
837 /* Find state from mouse. */
838 int
839 cmd_find_from_mouse(struct cmd_find_state *fs, struct mouse_event *m, int flags)
840 {
841 cmd_find_clear_state(fs, flags);
842
843 if (!m->valid)
844 return (-1);
845
846 fs->wp = cmd_mouse_pane(m, &fs->s, &fs->wl);
847 if (fs->wp == NULL) {
848 cmd_find_clear_state(fs, flags);
849 return (-1);
850 }
851 fs->w = fs->wl->window;
852
853 cmd_find_log_state(__func__, fs);
854 return (0);
855 }
856
857 /* Find state from client. */
858 int
859 cmd_find_from_client(struct cmd_find_state *fs, struct client *c, int flags)
860 {
861 struct window_pane *wp;
862
863 /* If no client, treat as from nothing. */
864 if (c == NULL)
865 return (cmd_find_from_nothing(fs, flags));
866
867 /* If this is an attached client, all done. */
868 if (c->session != NULL) {
869 cmd_find_clear_state(fs, flags);
870
871 fs->wp = server_client_get_pane(c);
872 if (fs->wp == NULL) {
873 cmd_find_from_session(fs, c->session, flags);
874 return (0);
875 }
876 fs->s = c->session;
877 fs->wl = fs->s->curw;
878 fs->w = fs->wl->window;
879
880 cmd_find_log_state(__func__, fs);
881 return (0);
882 }
883 cmd_find_clear_state(fs, flags);
884
885 /*
886 * If this is an unattached client running in a pane, we can use that
887 * to limit the list of sessions to those containing that pane.
888 */
889 wp = cmd_find_inside_pane(c);
890 if (wp == NULL)
891 goto unknown_pane;
892
893 /*
894 * Don't have a session, or it doesn't have this pane. Try all
895 * sessions.
896 */
897 fs->w = wp->window;
898 if (cmd_find_best_session_with_window(fs) != 0) {
899 /*
900 * The window may have been destroyed but the pane
901 * still on all_window_panes due to something else
902 * holding a reference.
903 */
904 goto unknown_pane;
905 }
906 fs->wl = fs->s->curw;
907 fs->w = fs->wl->window;
908 fs->wp = fs->w->active; /* use active pane */
909
910 cmd_find_log_state(__func__, fs);
911 return (0);
912
913 unknown_pane:
914 /* We can't find the pane so need to guess. */
915 return (cmd_find_from_nothing(fs, flags));
916 }
917
918 /*
919 * Split target into pieces and resolve for the given type. Fills in the given
920 * state. Returns 0 on success or -1 on error.
921 */
922 int
923 cmd_find_target(struct cmd_find_state *fs, struct cmdq_item *item,
924 const char *target, enum cmd_find_type type, int flags)
925 {
926 struct mouse_event *m;
927 struct cmd_find_state current;
928 char *colon, *period, *copy = NULL, tmp[256];
929 const char *session, *window, *pane, *s;
930 int window_only = 0, pane_only = 0;
931
932 /* Can fail flag implies quiet. */
933 if (flags & CMD_FIND_CANFAIL)
934 flags |= CMD_FIND_QUIET;
935
936 /* Log the arguments. */
937 if (type == CMD_FIND_PANE)
938 s = "pane";
939 else if (type == CMD_FIND_WINDOW)
940 s = "window";
941 else if (type == CMD_FIND_SESSION)
942 s = "session";
943 else
944 s = "unknown";
945 *tmp = '\0';
946 if (flags & CMD_FIND_PREFER_UNATTACHED)
947 strlcat(tmp, "PREFER_UNATTACHED,", sizeof tmp);
948 if (flags & CMD_FIND_QUIET)
949 strlcat(tmp, "QUIET,", sizeof tmp);
950 if (flags & CMD_FIND_WINDOW_INDEX)
951 strlcat(tmp, "WINDOW_INDEX,", sizeof tmp);
952 if (flags & CMD_FIND_DEFAULT_MARKED)
953 strlcat(tmp, "DEFAULT_MARKED,", sizeof tmp);
954 if (flags & CMD_FIND_EXACT_SESSION)
955 strlcat(tmp, "EXACT_SESSION,", sizeof tmp);
956 if (flags & CMD_FIND_EXACT_WINDOW)
957 strlcat(tmp, "EXACT_WINDOW,", sizeof tmp);
958 if (flags & CMD_FIND_CANFAIL)
959 strlcat(tmp, "CANFAIL,", sizeof tmp);
960 if (*tmp != '\0')
961 tmp[strlen(tmp) - 1] = '\0';
962 else
963 strlcat(tmp, "NONE", sizeof tmp);
964 log_debug("%s: target %s, type %s, item %p, flags %s", __func__,
965 target == NULL ? "none" : target, s, item, tmp);
966
967 /* Clear new state. */
968 cmd_find_clear_state(fs, flags);
969
970 /* Find current state. */
971 if (server_check_marked() && (flags & CMD_FIND_DEFAULT_MARKED)) {
972 fs->current = &marked_pane;
973 log_debug("%s: current is marked pane", __func__);
974 } else if (cmd_find_valid_state(cmdq_get_current(item))) {
975 fs->current = cmdq_get_current(item);
976 log_debug("%s: current is from queue", __func__);
977 } else if (cmd_find_from_client(&current, cmdq_get_client(item),
978 flags) == 0) {
979 fs->current = &current;
980 log_debug("%s: current is from client", __func__);
981 } else {
982 if (~flags & CMD_FIND_QUIET)
983 cmdq_error(item, "no current target");
984 goto error;
985 }
986 if (!cmd_find_valid_state(fs->current))
987 fatalx("invalid current find state");
988
989 /* An empty or NULL target is the current. */
990 if (target == NULL || *target == '\0')
991 goto current;
992
993 /* Mouse target is a plain = or {mouse}. */
994 if (strcmp(target, "=") == 0 || strcmp(target, "{mouse}") == 0) {
995 m = &cmdq_get_event(item)->m;
996 switch (type) {
997 case CMD_FIND_PANE:
998 fs->wp = cmd_mouse_pane(m, &fs->s, &fs->wl);
999 if (fs->wp != NULL) {
1000 fs->w = fs->wl->window;
1001 break;
1002 }
1003 /* FALLTHROUGH */
1004 case CMD_FIND_WINDOW:
1005 case CMD_FIND_SESSION:
1006 fs->wl = cmd_mouse_window(m, &fs->s);
1007 if (fs->wl == NULL && fs->s != NULL)
1008 fs->wl = fs->s->curw;
1009 if (fs->wl != NULL) {
1010 fs->w = fs->wl->window;
1011 fs->wp = fs->w->active;
1012 }
1013 break;
1014 }
1015 if (fs->wp == NULL) {
1016 if (~flags & CMD_FIND_QUIET)
1017 cmdq_error(item, "no mouse target");
1018 goto error;
1019 }
1020 goto found;
1021 }
1022
1023 /* Marked target is a plain ~ or {marked}. */
1024 if (strcmp(target, "~") == 0 || strcmp(target, "{marked}") == 0) {
1025 if (!server_check_marked()) {
1026 if (~flags & CMD_FIND_QUIET)
1027 cmdq_error(item, "no marked target");
1028 goto error;
1029 }
1030 cmd_find_copy_state(fs, &marked_pane);
1031 goto found;
1032 }
1033
1034 /* Find separators if they exist. */
1035 copy = xstrdup(target);
1036 colon = strchr(copy, ':');
1037 if (colon != NULL)
1038 *colon++ = '\0';
1039 if (colon == NULL)
1040 period = strchr(copy, '.');
1041 else
1042 period = strchr(colon, '.');
1043 if (period != NULL)
1044 *period++ = '\0';
1045
1046 /* Set session, window and pane parts. */
1047 session = window = pane = NULL;
1048 if (colon != NULL && period != NULL) {
1049 session = copy;
1050 window = colon;
1051 window_only = 1;
1052 pane = period;
1053 pane_only = 1;
1054 } else if (colon != NULL && period == NULL) {
1055 session = copy;
1056 window = colon;
1057 window_only = 1;
1058 } else if (colon == NULL && period != NULL) {
1059 window = copy;
1060 pane = period;
1061 pane_only = 1;
1062 } else {
1063 if (*copy == '$')
1064 session = copy;
1065 else if (*copy == '@')
1066 window = copy;
1067 else if (*copy == '%')
1068 pane = copy;
1069 else {
1070 switch (type) {
1071 case CMD_FIND_SESSION:
1072 session = copy;
1073 break;
1074 case CMD_FIND_WINDOW:
1075 window = copy;
1076 break;
1077 case CMD_FIND_PANE:
1078 pane = copy;
1079 break;
1080 }
1081 }
1082 }
1083
1084 /* Set exact match flags. */
1085 if (session != NULL && *session == '=') {
1086 session++;
1087 fs->flags |= CMD_FIND_EXACT_SESSION;
1088 }
1089 if (window != NULL && *window == '=') {
1090 window++;
1091 fs->flags |= CMD_FIND_EXACT_WINDOW;
1092 }
1093
1094 /* Empty is the same as NULL. */
1095 if (session != NULL && *session == '\0')
1096 session = NULL;
1097 if (window != NULL && *window == '\0')
1098 window = NULL;
1099 if (pane != NULL && *pane == '\0')
1100 pane = NULL;
1101
1102 /* Map though conversion table. */
1103 if (session != NULL)
1104 session = cmd_find_map_table(cmd_find_session_table, session);
1105 if (window != NULL)
1106 window = cmd_find_map_table(cmd_find_window_table, window);
1107 if (pane != NULL)
1108 pane = cmd_find_map_table(cmd_find_pane_table, pane);
1109
1110 if (session != NULL || window != NULL || pane != NULL) {
1111 log_debug("%s: target %s is %s%s%s%s%s%s",
1112 __func__, target,
1113 session == NULL ? "" : "session ",
1114 session == NULL ? "" : session,
1115 window == NULL ? "" : "window ",
1116 window == NULL ? "" : window,
1117 pane == NULL ? "" : "pane ",
1118 pane == NULL ? "" : pane);
1119 }
1120
1121 /* No pane is allowed if want an index. */
1122 if (pane != NULL && (flags & CMD_FIND_WINDOW_INDEX)) {
1123 if (~flags & CMD_FIND_QUIET)
1124 cmdq_error(item, "can't specify pane here");
1125 goto error;
1126 }
1127
1128 /* If the session isn't NULL, look it up. */
1129 if (session != NULL) {
1130 /* This will fill in session. */
1131 if (cmd_find_get_session(fs, session) != 0)
1132 goto no_session;
1133
1134 /* If window and pane are NULL, use that session's current. */
1135 if (window == NULL && pane == NULL) {
1136 fs->wl = fs->s->curw;
1137 fs->idx = -1;
1138 fs->w = fs->wl->window;
1139 fs->wp = fs->w->active;
1140 goto found;
1141 }
1142
1143 /* If window is present but pane not, find window in session. */
1144 if (window != NULL && pane == NULL) {
1145 /* This will fill in winlink and window. */
1146 if (cmd_find_get_window_with_session(fs, window) != 0)
1147 goto no_window;
1148 if (fs->wl != NULL) /* can be NULL if index only */
1149 fs->wp = fs->wl->window->active;
1150 goto found;
1151 }
1152
1153 /* If pane is present but window not, find pane. */
1154 if (window == NULL && pane != NULL) {
1155 /* This will fill in winlink and window and pane. */
1156 if (cmd_find_get_pane_with_session(fs, pane) != 0)
1157 goto no_pane;
1158 goto found;
1159 }
1160
1161 /*
1162 * If window and pane are present, find both in session. This
1163 * will fill in winlink and window.
1164 */
1165 if (cmd_find_get_window_with_session(fs, window) != 0)
1166 goto no_window;
1167 /* This will fill in pane. */
1168 if (cmd_find_get_pane_with_window(fs, pane) != 0)
1169 goto no_pane;
1170 goto found;
1171 }
1172
1173 /* No session. If window and pane, try them. */
1174 if (window != NULL && pane != NULL) {
1175 /* This will fill in session, winlink and window. */
1176 if (cmd_find_get_window(fs, window, window_only) != 0)
1177 goto no_window;
1178 /* This will fill in pane. */
1179 if (cmd_find_get_pane_with_window(fs, pane) != 0)
1180 goto no_pane;
1181 goto found;
1182 }
1183
1184 /* If just window is present, try it. */
1185 if (window != NULL && pane == NULL) {
1186 /* This will fill in session, winlink and window. */
1187 if (cmd_find_get_window(fs, window, window_only) != 0)
1188 goto no_window;
1189 if (fs->wl != NULL) /* can be NULL if index only */
1190 fs->wp = fs->wl->window->active;
1191 goto found;
1192 }
1193
1194 /* If just pane is present, try it. */
1195 if (window == NULL && pane != NULL) {
1196 /* This will fill in session, winlink, window and pane. */
1197 if (cmd_find_get_pane(fs, pane, pane_only) != 0)
1198 goto no_pane;
1199 goto found;
1200 }
1201
1202 current:
1203 /* Use the current session. */
1204 cmd_find_copy_state(fs, fs->current);
1205 if (flags & CMD_FIND_WINDOW_INDEX)
1206 fs->idx = -1;
1207 goto found;
1208
1209 error:
1210 fs->current = NULL;
1211 log_debug("%s: error", __func__);
1212
1213 free(copy);
1214 if (flags & CMD_FIND_CANFAIL)
1215 return (0);
1216 return (-1);
1217
1218 found:
1219 fs->current = NULL;
1220 cmd_find_log_state(__func__, fs);
1221
1222 free(copy);
1223 return (0);
1224
1225 no_session:
1226 if (~flags & CMD_FIND_QUIET)
1227 cmdq_error(item, "can't find session: %s", session);
1228 goto error;
1229
1230 no_window:
1231 if (~flags & CMD_FIND_QUIET)
1232 cmdq_error(item, "can't find window: %s", window);
1233 goto error;
1234
1235 no_pane:
1236 if (~flags & CMD_FIND_QUIET)
1237 cmdq_error(item, "can't find pane: %s", pane);
1238 goto error;
1239 }
1240
1241 /* Find the current client. */
1242 static struct client *
1243 cmd_find_current_client(struct cmdq_item *item, int quiet)
1244 {
1245 struct client *c = NULL, *found;
1246 struct session *s;
1247 struct window_pane *wp;
1248 struct cmd_find_state fs;
1249
1250 if (item != NULL)
1251 c = cmdq_get_client(item);
1252 if (c != NULL && c->session != NULL)
1253 return (c);
1254
1255 found = NULL;
1256 if (c != NULL && (wp = cmd_find_inside_pane(c)) != NULL) {
1257 cmd_find_clear_state(&fs, CMD_FIND_QUIET);
1258 fs.w = wp->window;
1259 if (cmd_find_best_session_with_window(&fs) == 0)
1260 found = cmd_find_best_client(fs.s);
1261 } else {
1262 s = cmd_find_best_session(NULL, 0, CMD_FIND_QUIET);
1263 if (s != NULL)
1264 found = cmd_find_best_client(s);
1265 }
1266 if (found == NULL && item != NULL && !quiet)
1267 cmdq_error(item, "no current client");
1268 log_debug("%s: no target, return %p", __func__, found);
1269 return (found);
1270 }
1271
1272 /* Find the target client or report an error and return NULL. */
1273 struct client *
1274 cmd_find_client(struct cmdq_item *item, const char *target, int quiet)
1275 {
1276 struct client *c;
1277 char *copy;
1278 size_t size;
1279
1280 /* A NULL argument means the current client. */
1281 if (target == NULL)
1282 return (cmd_find_current_client(item, quiet));
1283 copy = xstrdup(target);
1284
1285 /* Trim a single trailing colon if any. */
1286 size = strlen(copy);
1287 if (size != 0 && copy[size - 1] == ':')
1288 copy[size - 1] = '\0';
1289
1290 /* Check name and path of each client. */
1291 TAILQ_FOREACH(c, &clients, entry) {
1292 if (c->session == NULL)
1293 continue;
1294 if (strcmp(copy, c->name) == 0)
1295 break;
1296
1297 if (*c->ttyname == '\0')
1298 continue;
1299 if (strcmp(copy, c->ttyname) == 0)
1300 break;
1301 if (strncmp(c->ttyname, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
1302 continue;
1303 if (strcmp(copy, c->ttyname + (sizeof _PATH_DEV) - 1) == 0)
1304 break;
1305 }
1306
1307 /* If no client found, report an error. */
1308 if (c == NULL && !quiet)
1309 cmdq_error(item, "can't find client: %s", copy);
1310
1311 free(copy);
1312 log_debug("%s: target %s, return %p", __func__, target, c);
1313 return (c);
1314 }
tmux -- terminal multiplexer similar to GNU Screen