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1.2 ! nicm 1: /* $OpenBSD: cmd-find.c,v 1.1 2015/04/27 16:25:57 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2015 Nicholas Marriott <nicm@users.sourceforge.net>
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 <paths.h>
26:
27: #include "tmux.h"
28:
29: #define CMD_FIND_PREFER_UNATTACHED 0x1
30: #define CMD_FIND_QUIET 0x2
31: #define CMD_FIND_WINDOW_INDEX 0x4
32:
33: enum cmd_find_type {
34: CMD_FIND_PANE,
35: CMD_FIND_WINDOW,
36: CMD_FIND_SESSION,
37: };
38:
39: struct cmd_find_state {
40: struct cmd_q *cmdq;
41: int flags;
42: struct cmd_find_state *current;
43:
44: struct session *s;
45: struct winlink *wl;
46: struct window *w;
47: struct window_pane *wp;
48: int idx;
49: };
50:
51: int cmd_find_client_better(struct client *, struct client *);
52: struct client *cmd_find_best_client(struct client **, u_int);
53: int cmd_find_session_better(struct session *, struct session *,
54: int);
55: struct session *cmd_find_best_session(struct session **, u_int, int);
56: int cmd_find_best_session_with_window(struct cmd_find_state *);
57: int cmd_find_best_winlink_with_window(struct cmd_find_state *);
58:
59: int cmd_find_current_session_with_client(struct cmd_find_state *);
60: int cmd_find_current_session(struct cmd_find_state *);
61: struct client *cmd_find_current_client(struct cmd_q *);
62:
63: const char *cmd_find_map_table(const char *[][2], const char *);
64:
65: int cmd_find_get_session(struct cmd_find_state *, const char *);
66: int cmd_find_get_window(struct cmd_find_state *, const char *);
67: int cmd_find_get_window_with_session(struct cmd_find_state *, const char *);
68: int cmd_find_get_window_with_pane(struct cmd_find_state *);
69: int cmd_find_get_pane(struct cmd_find_state *, const char *);
70: int cmd_find_get_pane_with_session(struct cmd_find_state *, const char *);
71: int cmd_find_get_pane_with_window(struct cmd_find_state *, const char *);
72:
73: void cmd_find_clear_state(struct cmd_find_state *, struct cmd_q *, int);
74: void cmd_find_log_state(const char *, const char *, struct cmd_find_state *);
75:
76: struct cmd_find_state *cmd_find_target(struct cmd_q *, const char *,
77: enum cmd_find_type, int);
78:
79: const char *cmd_find_session_table[][2] = {
80: { NULL, NULL }
81: };
82: const char *cmd_find_window_table[][2] = {
83: { "{start}", "^" },
84: { "{last}", "!" },
85: { "{end}", "$" },
86: { "{next}", "+" },
87: { "{previous}", "-" },
88: { NULL, NULL }
89: };
90: const char *cmd_find_pane_table[][2] = {
91: { "{last}", "!" },
92: { "{next}", "+" },
93: { "{previous}", "-" },
94: { "{top}", "top" },
95: { "{bottom}", "bottom" },
96: { "{left}", "left" },
97: { "{right}", "right" },
98: { "{top-left}", "top-left" },
99: { "{top-right}", "top-right" },
100: { "{bottom-left}", "bottom-left" },
101: { "{bottom-right}", "bottom-right" },
102: { "{up}", "{up}" },
103: { "{down}", "{down}" },
104: { "{left}", "{left}" },
105: { "{right}", "{right}" },
106: { NULL, NULL }
107: };
108:
109: /* Is this client better? */
110: int
111: cmd_find_client_better(struct client *c, struct client *than)
112: {
113: if (than == NULL)
114: return (1);
115: return (timercmp(&c->activity_time, &than->activity_time, >));
116: }
117:
118: /* Find best client from a list, or all if list is NULL. */
119: struct client *
120: cmd_find_best_client(struct client **clist, u_int csize)
121: {
122: struct client *c_loop, *c;
123: u_int i;
124:
125: c = NULL;
126: if (clist != NULL) {
127: for (i = 0; i < csize; i++) {
128: if (cmd_find_client_better(clist[i], c))
129: c = clist[i];
130: }
131: } else {
132: TAILQ_FOREACH(c_loop, &clients, entry) {
133: if (cmd_find_client_better(c_loop, c))
1.2 ! nicm 134: c = c_loop;
1.1 nicm 135: }
136: }
137: return (c);
138: }
139:
140: /* Is this session better? */
141: int
142: cmd_find_session_better(struct session *s, struct session *than, int flags)
143: {
144: int attached;
145:
146: if (than == NULL)
147: return (1);
148: if (flags & CMD_FIND_PREFER_UNATTACHED) {
149: attached = (~than->flags & SESSION_UNATTACHED);
150: if (attached && (s->flags & SESSION_UNATTACHED))
151: return (1);
152: else if (!attached && (~s->flags & SESSION_UNATTACHED))
153: return (0);
154: }
155: return (timercmp(&s->activity_time, &than->activity_time, >));
156: }
157:
158: /* Find best session from a list, or all if list is NULL. */
159: struct session *
160: cmd_find_best_session(struct session **slist, u_int ssize, int flags)
161: {
162: struct session *s_loop, *s;
163: u_int i;
164:
165: s = NULL;
166: if (slist != NULL) {
167: for (i = 0; i < ssize; i++) {
168: if (cmd_find_session_better(slist[i], s, flags))
169: s = slist[i];
170: }
171: } else {
172: RB_FOREACH(s_loop, sessions, &sessions) {
173: if (cmd_find_session_better(s_loop, s, flags))
174: s = s_loop;
175: }
176: }
177: return (s);
178: }
179:
180: /* Find best session and winlink for window. */
181: int
182: cmd_find_best_session_with_window(struct cmd_find_state *fs)
183: {
184: struct session **slist = NULL;
185: u_int ssize;
186: struct session *s;
187:
188: ssize = 0;
189: RB_FOREACH(s, sessions, &sessions) {
190: if (!session_has(s, fs->w))
191: continue;
192: slist = xreallocarray (slist, ssize + 1, sizeof *slist);
193: slist[ssize++] = s;
194: }
195: if (ssize == 0)
196: goto fail;
197: fs->s = cmd_find_best_session(slist, ssize, fs->flags);
198: if (fs->s == NULL)
199: goto fail;
200: free (slist);
201: return (cmd_find_best_winlink_with_window(fs));
202:
203: fail:
204: free(slist);
205: return (-1);
206: }
207:
208: /*
209: * Find the best winlink for a window (the current if it contains the pane,
210: * otherwise the first).
211: */
212: int
213: cmd_find_best_winlink_with_window(struct cmd_find_state *fs)
214: {
215: struct winlink *wl, *wl_loop;
216:
217: wl = NULL;
218: if (fs->s->curw->window == fs->w)
219: wl = fs->s->curw;
220: else {
221: RB_FOREACH(wl_loop, winlinks, &fs->s->windows) {
222: if (wl_loop->window == fs->w) {
223: wl = wl_loop;
224: break;
225: }
226: }
227: }
228: if (wl == NULL)
229: return (-1);
230: fs->wl = wl;
231: fs->idx = fs->wl->idx;
232: return (0);
233: }
234:
235: /* Find current session when we have an unattached client. */
236: int
237: cmd_find_current_session_with_client(struct cmd_find_state *fs)
238: {
239: struct window_pane *wp;
240:
241: /* If this is running in a pane, that's great. */
242: RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
243: if (strcmp(wp->tty, fs->cmdq->client->tty.path) == 0)
244: break;
245: }
246:
247: /* Not running in a pane. We know nothing. Find the best session. */
248: if (wp == NULL) {
249: fs->s = cmd_find_best_session(NULL, 0, fs->flags);
250: if (fs->s == NULL)
251: return (-1);
252: fs->wl = fs->s->curw;
253: fs->idx = fs->wl->idx;
254: fs->w = fs->wl->window;
255: fs->wp = fs->w->active;
256: return (0);
257: }
258:
259: /* We now know the window and pane. */
260: fs->w = wp->window;
261: fs->wp = wp;
262:
263: /* Find the best session and winlink. */
264: if (cmd_find_best_session_with_window(fs) != 0)
265: return (-1);
266: return (0);
267: }
268:
269: /*
270: * Work out the best current state. If this function succeeds, the state is
271: * guaranteed to be completely filled in.
272: */
273: int
274: cmd_find_current_session(struct cmd_find_state *fs)
275: {
276: /* If we know the current client, use it. */
277: if (fs->cmdq->client != NULL) {
278: if (fs->cmdq->client->session == NULL)
279: return (cmd_find_current_session_with_client(fs));
280: fs->s = fs->cmdq->client->session;
281: fs->wl = fs->s->curw;
282: fs->idx = fs->wl->idx;
283: fs->w = fs->wl->window;
284: fs->wp = fs->w->active;
285: return (0);
286: }
287:
288: /* We know nothing, find the best session and client. */
289: fs->s = cmd_find_best_session(NULL, 0, fs->flags);
290: if (fs->s == NULL)
291: return (-1);
292: fs->wl = fs->s->curw;
293: fs->idx = fs->wl->idx;
294: fs->w = fs->wl->window;
295: fs->wp = fs->w->active;
296:
297: return (0);
298: }
299:
300: /* Work out the best current client. */
301: struct client *
302: cmd_find_current_client(struct cmd_q *cmdq)
303: {
304: struct cmd_find_state current;
305: struct session *s;
306: struct client *c, **clist = NULL;
307: u_int csize;
308:
309: /* If the queue client has a session, use it. */
310: if (cmdq->client != NULL && cmdq->client->session != NULL)
311: return (cmdq->client);
312:
313: /* Otherwise find the current session. */
314: cmd_find_clear_state(¤t, cmdq, 0);
315: if (cmd_find_current_session(¤t) != 0)
316: return (NULL);
317:
318: /* If it is attached, find the best of it's clients. */
319: s = current.s;
320: if (~s->flags & SESSION_UNATTACHED) {
321: csize = 0;
322: TAILQ_FOREACH(c, &clients, entry) {
323: if (c->session != s)
324: continue;
325: clist = xreallocarray (clist, csize + 1, sizeof *clist);
326: clist[csize++] = c;
327: }
328: if (csize != 0) {
329: c = cmd_find_best_client(clist, csize);
330: if (c != NULL) {
331: free(clist);
332: return (c);
333: }
334: }
335: free(clist);
336: }
337:
338: /* Otherwise pick best of all clients. */
339: return (cmd_find_best_client(NULL, 0));
340: }
341:
342: /* Maps string in table. */
343: const char *
344: cmd_find_map_table(const char *table[][2], const char *s)
345: {
346: u_int i;
347:
348: for (i = 0; table[i][0] != NULL; i++) {
349: if (strcmp(s, table[i][0]) == 0)
350: return (table[i][1]);
351: }
352: return (s);
353: }
354:
355: /* Find session from string. Fills in s. */
356: int
357: cmd_find_get_session(struct cmd_find_state *fs, const char *session)
358: {
359: struct session *s, *s_loop;
360:
361: log_debug("%s: %s", __func__, session);
362:
363: /* Check for session ids starting with $. */
364: if (*session == '$') {
365: fs->s = session_find_by_id_str(session);
366: if (fs->s == NULL)
367: return (-1);
368: return (0);
369: }
370:
371: /* Look for exactly this session. */
372: fs->s = session_find(session);
373: if (fs->s != NULL)
374: return (0);
375:
376: /* Otherwise look for prefix. */
377: s = NULL;
378: RB_FOREACH(s_loop, sessions, &sessions) {
379: if (strncmp(session, s_loop->name, strlen(session)) == 0) {
380: if (s != NULL)
381: return (-1);
382: s = s_loop;
383: }
384: }
385: if (s != NULL) {
386: fs->s = s;
387: return (0);
388: }
389:
390: /* Then as a pattern. */
391: s = NULL;
392: RB_FOREACH(s_loop, sessions, &sessions) {
393: if (fnmatch(session, s_loop->name, 0) == 0) {
394: if (s != NULL)
395: return (-1);
396: s = s_loop;
397: }
398: }
399: if (s != NULL) {
400: fs->s = s;
401: return (0);
402: }
403:
404: return (-1);
405: }
406:
407: /* Find window from string. Fills in s, wl, w. */
408: int
409: cmd_find_get_window(struct cmd_find_state *fs, const char *window)
410: {
411: log_debug("%s: %s", __func__, window);
412:
413: /* Check for window ids starting with @. */
414: if (*window == '@') {
415: fs->w = window_find_by_id_str(window);
416: if (fs->w == NULL)
417: return (-1);
418: return (cmd_find_best_session_with_window(fs));
419: }
420:
421: /* Not a window id, so use the current session. */
422: fs->s = fs->current->s;
423:
424: /* We now only need to find the winlink in this session. */
425: return (cmd_find_get_window_with_session(fs, window));
426: }
427:
428: /*
429: * Find window from string, assuming it is in given session. Needs s, fills in
430: * wl and w.
431: */
432: int
433: cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
434: {
435: struct winlink *wl;
436: const char *errstr;
437: int idx, n;
438: struct session *s;
439:
440: log_debug("%s: %s", __func__, window);
441:
442: /* Check for window ids starting with @. */
443: if (*window == '@') {
444: fs->w = window_find_by_id_str(window);
445: if (fs->w == NULL || !session_has(fs->s, fs->w))
446: return (-1);
447: return (cmd_find_best_winlink_with_window(fs));
448: }
449:
450: /* Try as an offset. */
451: if (window[0] == '+' || window[0] == '-') {
452: if (window[1] != '\0')
453: n = strtonum(window + 1, 1, INT_MAX, NULL);
454: else
455: n = 1;
456: s = fs->s;
457: if (fs->flags & CMD_FIND_WINDOW_INDEX) {
458: if (window[0] == '+') {
459: if (INT_MAX - s->curw->idx < n)
460: return (-1);
461: fs->idx = s->curw->idx + n;
462: } else {
463: if (n < s->curw->idx)
464: return (-1);
465: fs->idx = s->curw->idx - n;
466: }
467: return (0);
468: }
469: if (window[0] == '+')
470: fs->wl = winlink_next_by_number(s->curw, s, n);
471: else
472: fs->wl = winlink_previous_by_number(s->curw, s, n);
473: if (fs->wl != NULL) {
474: fs->idx = fs->wl->idx;
475: fs->w = fs->wl->window;
476: return (0);
477: }
478: }
479:
480: /* Try special characters. */
481: if (strcmp(window, "!") == 0) {
482: fs->wl = TAILQ_FIRST(&fs->s->lastw);
483: if (fs->wl == NULL)
484: return (-1);
485: fs->idx = fs->wl->idx;
486: fs->w = fs->wl->window;
487: return (0);
488: } else if (strcmp(window, "^") == 0) {
489: fs->wl = RB_MIN(winlinks, &fs->s->windows);
490: if (fs->wl == NULL)
491: return (-1);
492: fs->idx = fs->wl->idx;
493: fs->w = fs->wl->window;
494: return (0);
495: } else if (strcmp(window, "$") == 0) {
496: fs->wl = RB_MAX(winlinks, &fs->s->windows);
497: if (fs->wl == NULL)
498: return (-1);
499: fs->idx = fs->wl->idx;
500: fs->w = fs->wl->window;
501: return (0);
502: }
503:
504: /* First see if this is a valid window index in this session. */
505: idx = strtonum(window, 0, INT_MAX, &errstr);
506: if (errstr == NULL) {
507: if (fs->flags & CMD_FIND_WINDOW_INDEX) {
508: fs->idx = idx;
509: return (0);
510: }
511: fs->wl = winlink_find_by_index(&fs->s->windows, idx);
512: if (fs->wl != NULL) {
513: fs->w = fs->wl->window;
514: return (0);
515: }
516: }
517:
518: /* Look for exact matches, error if more than one. */
519: fs->wl = NULL;
520: RB_FOREACH(wl, winlinks, &fs->s->windows) {
521: if (strcmp(window, wl->window->name) == 0) {
522: if (fs->wl != NULL)
523: return (-1);
524: fs->wl = wl;
525: }
526: }
527: if (fs->wl != NULL) {
528: fs->idx = fs->wl->idx;
529: fs->w = fs->wl->window;
530: return (0);
531: }
532:
533: /* Try as the start of a window name, error if multiple. */
534: fs->wl = NULL;
535: RB_FOREACH(wl, winlinks, &fs->s->windows) {
536: if (strncmp(window, wl->window->name, strlen(window)) == 0) {
537: if (fs->wl != NULL)
538: return (-1);
539: fs->wl = wl;
540: }
541: }
542: if (fs->wl != NULL) {
543: fs->idx = fs->wl->idx;
544: fs->w = fs->wl->window;
545: return (0);
546: }
547:
548: /* Now look for pattern matches, again error if multiple. */
549: fs->wl = NULL;
550: RB_FOREACH(wl, winlinks, &fs->s->windows) {
551: if (fnmatch(window, wl->window->name, 0) == 0) {
552: if (fs->wl != NULL)
553: return (-1);
554: fs->wl = wl;
555: }
556: }
557: if (fs->wl != NULL) {
558: fs->idx = fs->wl->idx;
559: fs->w = fs->wl->window;
560: return (0);
561: }
562:
563: return (-1);
564: }
565:
566: /* Find window from given pane. Needs wp, fills in s and wl and w. */
567: int
568: cmd_find_get_window_with_pane(struct cmd_find_state *fs)
569: {
570: log_debug("%s", __func__);
571:
572: fs->w = fs->wp->window;
573: return (cmd_find_best_session_with_window(fs));
574: }
575:
576: /* Find pane from string. Fills in s, wl, w, wp. */
577: int
578: cmd_find_get_pane(struct cmd_find_state *fs, const char *pane)
579: {
580: log_debug("%s: %s", __func__, pane);
581:
582: /* Check for pane ids starting with %. */
583: if (*pane == '%') {
584: fs->wp = window_pane_find_by_id_str(pane);
585: if (fs->wp == NULL)
586: return (-1);
587: fs->w = fs->wp->window;
588: return (cmd_find_best_session_with_window(fs));
589: }
590:
591: /* Not a pane id, so use the current session and window. */
592: fs->s = fs->current->s;
593: fs->wl = fs->current->wl;
594: fs->idx = fs->current->idx;
595: fs->w = fs->current->w;
596:
597: /* We now only need to find the pane in this window. */
598: return (cmd_find_get_pane_with_window(fs, pane));
599: }
600:
601: /*
602: * Find pane from string, assuming it is in given session. Needs s, fills in wl
603: * and w and wp.
604: */
605: int
606: cmd_find_get_pane_with_session(struct cmd_find_state *fs, const char *pane)
607: {
608: log_debug("%s: %s", __func__, pane);
609:
610: /* Check for pane ids starting with %. */
611: if (*pane == '%') {
612: fs->wp = window_pane_find_by_id_str(pane);
613: if (fs->wp == NULL)
614: return (-1);
615: fs->w = fs->wp->window;
616: return (cmd_find_best_winlink_with_window(fs));
617: }
618:
619: /* Otherwise use the current window. */
620: fs->wl = fs->s->curw;
621: fs->idx = fs->wl->idx;
622: fs->w = fs->wl->window;
623:
624: /* Now we just need to look up the pane. */
625: return (cmd_find_get_pane_with_window(fs, pane));
626: }
627:
628: /*
629: * Find pane from string, assuming it is in the given window. Needs w, fills in
630: * wp.
631: */
632: int
633: cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane)
634: {
635: const char *errstr;
636: int idx;
637: struct window_pane *wp;
638: u_int n;
639:
640: log_debug("%s: %s", __func__, pane);
641:
642: /* Check for pane ids starting with %. */
643: if (*pane == '%') {
644: fs->wp = window_pane_find_by_id_str(pane);
645: if (fs->wp == NULL || fs->wp->window != fs->w)
646: return (-1);
647: return (0);
648: }
649:
650: /* Try special characters. */
651: if (strcmp(pane, "!") == 0) {
652: if (fs->w->last == NULL)
653: return (-1);
654: fs->wp = fs->w->last;
655: return (0);
656: } else if (strcmp(pane, "{up}") == 0) {
657: fs->wp = window_pane_find_up(fs->w->active);
658: if (fs->wp == NULL)
659: return (-1);
660: return (0);
661: } else if (strcmp(pane, "{down}") == 0) {
662: fs->wp = window_pane_find_down(fs->w->active);
663: if (fs->wp == NULL)
664: return (-1);
665: return (0);
666: } else if (strcmp(pane, "{left}") == 0) {
667: fs->wp = window_pane_find_left(fs->w->active);
668: if (fs->wp == NULL)
669: return (-1);
670: return (0);
671: } else if (strcmp(pane, "{right}") == 0) {
672: fs->wp = window_pane_find_right(fs->w->active);
673: if (fs->wp == NULL)
674: return (-1);
675: return (0);
676: }
677:
678: /* Try as an offset. */
679: if (pane[0] == '+' || pane[0] == '-') {
680: if (pane[1] != '\0')
681: n = strtonum(pane + 1, 1, INT_MAX, NULL);
682: else
683: n = 1;
684: wp = fs->w->active;
685: if (pane[0] == '+')
686: fs->wp = window_pane_next_by_number(fs->w, wp, n);
687: else
688: fs->wp = window_pane_previous_by_number(fs->w, wp, n);
689: if (fs->wp != NULL)
690: return (0);
691: }
692:
693: /* Get pane by index. */
694: idx = strtonum(pane, 0, INT_MAX, &errstr);
695: if (errstr == NULL) {
696: fs->wp = window_pane_at_index(fs->w, idx);
697: if (fs->wp != NULL)
698: return (0);
699: }
700:
701: /* Try as a description. */
702: fs->wp = window_find_string(fs->w, pane);
703: if (fs->wp != NULL)
704: return (0);
705:
706: return (-1);
707: }
708:
709: /* Clear state. */
710: void
711: cmd_find_clear_state(struct cmd_find_state *fs, struct cmd_q *cmdq, int flags)
712: {
713: memset (fs, 0, sizeof *fs);
714:
715: fs->cmdq = cmdq;
716: fs->flags = flags;
717:
718: fs->idx = -1;
719: }
720:
721: /* Split target into pieces and resolve for the given type. */
722: struct cmd_find_state *
723: cmd_find_target(struct cmd_q *cmdq, const char *target, enum cmd_find_type type,
724: int flags)
725: {
726: static struct cmd_find_state fs, current;
727: struct mouse_event *m;
728: char *colon, *period, *copy = NULL;
729: const char *session, *window, *pane;
730:
731: /* Find current state. */
732: cmd_find_clear_state(¤t, cmdq, flags);
733: if (cmd_find_current_session(¤t) != 0) {
734: if (~flags & CMD_FIND_QUIET)
735: cmdq_error(cmdq, "no current session");
736: goto error;
737: }
738:
739: /* Clear new state. */
740: cmd_find_clear_state(&fs, cmdq, flags);
741: fs.current = ¤t;
742:
743: /* An empty or NULL target is the current. */
744: if (target == NULL || *target == '\0')
745: goto current;
746:
747: /* Mouse target is a plain = or {mouse}. */
748: if (strcmp(target, "=") == 0 || strcmp(target, "{mouse}") == 0) {
749: m = &cmdq->item->mouse;
750: switch (type) {
751: case CMD_FIND_PANE:
752: fs.wp = cmd_mouse_pane(m, &fs.s, &fs.wl);
753: if (fs.wp != NULL)
754: fs.w = fs.wl->window;
755: break;
756: case CMD_FIND_WINDOW:
757: case CMD_FIND_SESSION:
758: fs.wl = cmd_mouse_window(m, &fs.s);
759: if (fs.wl != NULL) {
760: fs.w = fs.wl->window;
761: fs.wp = fs.w->active;
762: }
763: break;
764: }
765: if (fs.wp == NULL) {
766: if (~flags & CMD_FIND_QUIET)
767: cmdq_error(cmdq, "no mouse target");
768: goto error;
769: }
770: return (&fs);
771: }
772: copy = xstrdup(target);
773:
774: /* Find separators if they exist. */
775: colon = strchr(copy, ':');
776: if (colon != NULL)
777: *colon++ = '\0';
778: if (colon == NULL)
779: period = strchr(copy, '.');
780: else
781: period = strchr(colon, '.');
782: if (period != NULL)
783: *period++ = '\0';
784:
785: /* Set session, window and pane parts. */
786: session = window = pane = NULL;
787: if (colon != NULL && period != NULL) {
788: session = copy;
789: window = colon;
790: pane = period;
791: } else if (colon != NULL && period == NULL) {
792: session = copy;
793: window = colon;
794: } else if (colon == NULL && period != NULL) {
795: window = copy;
796: pane = period;
797: } else {
798: if (*copy == '$')
799: session = copy;
800: else if (*copy == '@')
801: window = copy;
802: else if (*copy == '%')
803: pane = copy;
804: else {
805: switch (type) {
806: case CMD_FIND_SESSION:
807: session = copy;
808: break;
809: case CMD_FIND_WINDOW:
810: window = copy;
811: break;
812: case CMD_FIND_PANE:
813: pane = copy;
814: break;
815: }
816: }
817: }
818:
819: /* Empty is the same as NULL. */
820: if (session != NULL && *session == '\0')
821: session = NULL;
822: if (window != NULL && *window == '\0')
823: window = NULL;
824: if (pane != NULL && *pane == '\0')
825: pane = NULL;
826:
827: /* Map though conversion table. */
828: if (session != NULL)
829: session = cmd_find_map_table(cmd_find_session_table, session);
830: if (window != NULL)
831: window = cmd_find_map_table(cmd_find_window_table, window);
832: if (pane != NULL)
833: pane = cmd_find_map_table(cmd_find_pane_table, pane);
834:
835: log_debug("target %s (flags %#x): session=%s, window=%s, pane=%s",
836: target, flags, session == NULL ? "none" : session,
837: window == NULL ? "none" : window, pane == NULL ? "none" : pane);
838:
839: /* No pane is allowed if want an index. */
840: if (pane != NULL && (flags & CMD_FIND_WINDOW_INDEX)) {
841: if (~flags & CMD_FIND_QUIET)
842: cmdq_error(cmdq, "can't specify pane here");
843: goto error;
844: }
845:
846: /* If the session isn't NULL, look it up. */
847: if (session != NULL) {
848: /* This will fill in session. */
849: if (cmd_find_get_session(&fs, session) != 0)
850: goto no_session;
851:
852: /* If window and pane are NULL, use that session's current. */
853: if (window == NULL && pane == NULL) {
854: fs.wl = fs.s->curw;
855: fs.idx = -1;
856: fs.w = fs.wl->window;
857: fs.wp = fs.w->active;
858: goto found;
859: }
860:
861: /* If window is present but pane not, find window in session. */
862: if (window != NULL && pane == NULL) {
863: /* This will fill in winlink and window. */
864: if (cmd_find_get_window_with_session(&fs, window) != 0)
865: goto no_window;
866: if (~flags & CMD_FIND_WINDOW_INDEX)
867: fs.wp = fs.wl->window->active;
868: goto found;
869: }
870:
871: /* If pane is present but window not, find pane. */
872: if (window == NULL && pane != NULL) {
873: /* This will fill in winlink and window and pane. */
874: if (cmd_find_get_pane_with_session(&fs, pane) != 0)
875: goto no_pane;
876: goto found;
877: }
878:
879: /*
880: * If window and pane are present, find both in session. This
881: * will fill in winlink and window.
882: */
883: if (cmd_find_get_window_with_session(&fs, window) != 0)
884: goto no_window;
885: /* This will fill in pane. */
886: if (cmd_find_get_pane_with_window(&fs, pane) != 0)
887: goto no_pane;
888: goto found;
889: }
890:
891: /* No session. If window and pane, try them. */
892: if (window != NULL && pane != NULL) {
893: /* This will fill in session, winlink and window. */
894: if (cmd_find_get_window(&fs, window) != 0)
895: goto no_window;
896: /* This will fill in pane. */
897: if (cmd_find_get_pane_with_window(&fs, pane) != 0)
898: goto no_pane;
899: goto found;
900: }
901:
902: /* If just window is present, try it. */
903: if (window != NULL && pane == NULL) {
904: /* This will fill in session, winlink and window. */
905: if (cmd_find_get_window(&fs, window) != 0)
906: goto no_window;
907: if (~flags & CMD_FIND_WINDOW_INDEX)
908: fs.wp = fs.wl->window->active;
909: goto found;
910: }
911:
912: /* If just pane is present, try it. */
913: if (window == NULL && pane != NULL) {
914: /* This will fill in session, winlink, window and pane. */
915: if (cmd_find_get_pane(&fs, pane) != 0)
916: goto no_pane;
917: goto found;
918: }
919:
920: current:
921: /* None is the current session. */
922: free(copy);
923: if (flags & CMD_FIND_WINDOW_INDEX)
924: current.idx = -1;
925: return (¤t);
926:
927: error:
928: free(copy);
929: return (NULL);
930:
931: found:
932: free(copy);
933: return (&fs);
934:
935: no_session:
936: if (~flags & CMD_FIND_QUIET)
937: cmdq_error(cmdq, "can't find session %s", session);
938: goto error;
939:
940: no_window:
941: if (~flags & CMD_FIND_QUIET)
942: cmdq_error(cmdq, "can't find window %s", window);
943: goto error;
944:
945: no_pane:
946: if (~flags & CMD_FIND_QUIET)
947: cmdq_error(cmdq, "can't find pane %s", pane);
948: goto error;
949: }
950:
951: /* Log the result. */
952: void
953: cmd_find_log_state(const char *f, const char *target, struct cmd_find_state *fs)
954: {
955: log_debug("%s: target %s%s", f, target == NULL ? "none" : target,
956: fs != NULL ? "" : " (failed)");
957: if (fs == NULL)
958: return;
959: if (fs->s != NULL)
960: log_debug("\ts=$%u", fs->s->id);
961: else
962: log_debug("\ts=none");
963: if (fs->wl != NULL) {
964: log_debug("\twl=%u %d w=@%u %s", fs->wl->idx,
965: fs->wl->window == fs->w, fs->w->id, fs->w->name);
966: } else
967: log_debug("\twl=none");
968: if (fs->wp != NULL)
969: log_debug("\twp=%%%u", fs->wp->id);
970: else
971: log_debug("\twp=none");
972: if (fs->idx != -1)
973: log_debug("\tidx=%d", fs->idx);
974: else
975: log_debug("\tidx=none");
976: }
977:
978: /* Find the current session. */
979: struct session *
980: cmd_find_current(struct cmd_q *cmdq)
981: {
982: struct cmd_find_state *fs;
983: int flags = CMD_FIND_QUIET;
984:
985: fs = cmd_find_target(cmdq, NULL, CMD_FIND_SESSION, flags);
986: cmd_find_log_state(__func__, NULL, fs);
987: if (fs == NULL)
988: return (NULL);
989:
990: return (fs->s);
991: }
992:
993: /* Find the target session or report an error and return NULL. */
994: struct session *
995: cmd_find_session(struct cmd_q *cmdq, const char *target, int prefer_unattached)
996: {
997: struct cmd_find_state *fs;
998: int flags = 0;
999:
1000: if (prefer_unattached)
1001: flags |= CMD_FIND_PREFER_UNATTACHED;
1002:
1003: fs = cmd_find_target(cmdq, target, CMD_FIND_SESSION, flags);
1004: cmd_find_log_state(__func__, target, fs);
1005: if (fs == NULL)
1006: return (NULL);
1007:
1008: return (fs->s);
1009: }
1010:
1011: /* Find the target window or report an error and return NULL. */
1012: struct winlink *
1013: cmd_find_window(struct cmd_q *cmdq, const char *target, struct session **sp)
1014: {
1015: struct cmd_find_state *fs;
1016:
1017: fs = cmd_find_target(cmdq, target, CMD_FIND_WINDOW, 0);
1018: cmd_find_log_state(__func__, target, fs);
1019: if (fs == NULL)
1020: return (NULL);
1021:
1022: if (sp != NULL)
1023: *sp = fs->s;
1024: return (fs->wl);
1025: }
1026:
1027: /* Find the target pane and report an error and return NULL. */
1028: struct winlink *
1029: cmd_find_pane(struct cmd_q *cmdq, const char *target, struct session **sp,
1030: struct window_pane **wpp)
1031: {
1032: struct cmd_find_state *fs;
1033:
1034: fs = cmd_find_target(cmdq, target, CMD_FIND_PANE, 0);
1035: cmd_find_log_state(__func__, target, fs);
1036: if (fs == NULL)
1037: return (NULL);
1038:
1039: if (sp != NULL)
1040: *sp = fs->s;
1041: if (wpp != NULL)
1042: *wpp = fs->wp;
1043: return (fs->wl);
1044: }
1045:
1046: /* Find the target client or report an error and return NULL. */
1047: struct client *
1048: cmd_find_client(struct cmd_q *cmdq, const char *target, int quiet)
1049: {
1050: struct client *c;
1051: char *copy;
1052: size_t size;
1053: const char *path;
1054:
1055: /* A NULL argument means the current client. */
1056: if (target == NULL) {
1057: c = cmd_find_current_client(cmdq);
1058: if (c == NULL && !quiet)
1059: cmdq_error(cmdq, "no current client");
1060: return (c);
1061: }
1062: copy = xstrdup(target);
1063:
1064: /* Trim a single trailing colon if any. */
1065: size = strlen(copy);
1066: if (size != 0 && copy[size - 1] == ':')
1067: copy[size - 1] = '\0';
1068:
1069: /* Check path of each client. */
1070: TAILQ_FOREACH(c, &clients, entry) {
1071: if (c->session == NULL || c->tty.path == NULL)
1072: continue;
1073: path = c->tty.path;
1074:
1075: /* Try for exact match. */
1076: if (strcmp(copy, path) == 0)
1077: break;
1078:
1079: /* Try without leading /dev. */
1080: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
1081: continue;
1082: if (strcmp(copy, path + (sizeof _PATH_DEV) - 1) == 0)
1083: break;
1084: }
1085:
1086: /* If no client found, report an error. */
1087: if (c == NULL && !quiet)
1088: cmdq_error(cmdq, "can't find client %s", copy);
1089:
1090: free(copy);
1091: return (c);
1092: }
1093:
1094: /*
1095: * Find the target session and window index, whether or not it exists in the
1096: * session. Return -2 on error or -1 if no window index is specified. This is
1097: * used when parsing an argument for a window target that may not exist (for
1098: * example if it is going to be created).
1099: */
1100: int
1101: cmd_find_index(struct cmd_q *cmdq, const char *target, struct session **sp)
1102: {
1103: struct cmd_find_state *fs;
1104: int flags = CMD_FIND_WINDOW_INDEX;
1105:
1106: fs = cmd_find_target(cmdq, target, CMD_FIND_WINDOW, flags);
1107: cmd_find_log_state(__func__, target, fs);
1108: if (fs == NULL)
1109: return (-2);
1110:
1111: if (sp != NULL)
1112: *sp = fs->s;
1113: return (fs->idx);
1114: }