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1.6 ! nicm 1: /* $OpenBSD: cmd-find.c,v 1.5 2015/04/28 11:57:20 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++) {
1.3 nicm 128: if (clist[i]->session == NULL)
129: continue;
1.1 nicm 130: if (cmd_find_client_better(clist[i], c))
131: c = clist[i];
132: }
133: } else {
134: TAILQ_FOREACH(c_loop, &clients, entry) {
1.3 nicm 135: if (c_loop->session == NULL)
136: continue;
1.1 nicm 137: if (cmd_find_client_better(c_loop, c))
1.2 nicm 138: c = c_loop;
1.1 nicm 139: }
140: }
141: return (c);
142: }
143:
144: /* Is this session better? */
145: int
146: cmd_find_session_better(struct session *s, struct session *than, int flags)
147: {
148: int attached;
149:
150: if (than == NULL)
151: return (1);
152: if (flags & CMD_FIND_PREFER_UNATTACHED) {
153: attached = (~than->flags & SESSION_UNATTACHED);
154: if (attached && (s->flags & SESSION_UNATTACHED))
155: return (1);
156: else if (!attached && (~s->flags & SESSION_UNATTACHED))
157: return (0);
158: }
159: return (timercmp(&s->activity_time, &than->activity_time, >));
160: }
161:
162: /* Find best session from a list, or all if list is NULL. */
163: struct session *
164: cmd_find_best_session(struct session **slist, u_int ssize, int flags)
165: {
166: struct session *s_loop, *s;
167: u_int i;
168:
169: s = NULL;
170: if (slist != NULL) {
171: for (i = 0; i < ssize; i++) {
172: if (cmd_find_session_better(slist[i], s, flags))
173: s = slist[i];
174: }
175: } else {
176: RB_FOREACH(s_loop, sessions, &sessions) {
177: if (cmd_find_session_better(s_loop, s, flags))
178: s = s_loop;
179: }
180: }
181: return (s);
182: }
183:
184: /* Find best session and winlink for window. */
185: int
186: cmd_find_best_session_with_window(struct cmd_find_state *fs)
187: {
188: struct session **slist = NULL;
189: u_int ssize;
190: struct session *s;
191:
192: ssize = 0;
193: RB_FOREACH(s, sessions, &sessions) {
194: if (!session_has(s, fs->w))
195: continue;
196: slist = xreallocarray (slist, ssize + 1, sizeof *slist);
197: slist[ssize++] = s;
198: }
199: if (ssize == 0)
200: goto fail;
201: fs->s = cmd_find_best_session(slist, ssize, fs->flags);
202: if (fs->s == NULL)
203: goto fail;
204: free (slist);
205: return (cmd_find_best_winlink_with_window(fs));
206:
207: fail:
208: free(slist);
209: return (-1);
210: }
211:
212: /*
213: * Find the best winlink for a window (the current if it contains the pane,
214: * otherwise the first).
215: */
216: int
217: cmd_find_best_winlink_with_window(struct cmd_find_state *fs)
218: {
219: struct winlink *wl, *wl_loop;
220:
221: wl = NULL;
222: if (fs->s->curw->window == fs->w)
223: wl = fs->s->curw;
224: else {
225: RB_FOREACH(wl_loop, winlinks, &fs->s->windows) {
226: if (wl_loop->window == fs->w) {
227: wl = wl_loop;
228: break;
229: }
230: }
231: }
232: if (wl == NULL)
233: return (-1);
234: fs->wl = wl;
235: fs->idx = fs->wl->idx;
236: return (0);
237: }
238:
239: /* Find current session when we have an unattached client. */
240: int
241: cmd_find_current_session_with_client(struct cmd_find_state *fs)
242: {
243: struct window_pane *wp;
244:
245: /* If this is running in a pane, that's great. */
1.5 nicm 246: if (fs->cmdq->client->tty.path != NULL) {
247: RB_FOREACH(wp, window_pane_tree, &all_window_panes) {
248: if (strcmp(wp->tty, fs->cmdq->client->tty.path) == 0)
249: break;
250: }
251: } else
252: wp = NULL;
1.1 nicm 253:
254: /* Not running in a pane. We know nothing. Find the best session. */
255: if (wp == NULL) {
256: fs->s = cmd_find_best_session(NULL, 0, fs->flags);
257: if (fs->s == NULL)
258: return (-1);
259: fs->wl = fs->s->curw;
260: fs->idx = fs->wl->idx;
261: fs->w = fs->wl->window;
262: fs->wp = fs->w->active;
263: return (0);
264: }
265:
266: /* We now know the window and pane. */
267: fs->w = wp->window;
268: fs->wp = wp;
269:
270: /* Find the best session and winlink. */
271: if (cmd_find_best_session_with_window(fs) != 0)
272: return (-1);
273: return (0);
274: }
275:
276: /*
277: * Work out the best current state. If this function succeeds, the state is
278: * guaranteed to be completely filled in.
279: */
280: int
281: cmd_find_current_session(struct cmd_find_state *fs)
282: {
283: /* If we know the current client, use it. */
284: if (fs->cmdq->client != NULL) {
285: if (fs->cmdq->client->session == NULL)
286: return (cmd_find_current_session_with_client(fs));
287: fs->s = fs->cmdq->client->session;
288: fs->wl = fs->s->curw;
289: fs->idx = fs->wl->idx;
290: fs->w = fs->wl->window;
291: fs->wp = fs->w->active;
292: return (0);
293: }
294:
295: /* We know nothing, find the best session and client. */
296: fs->s = cmd_find_best_session(NULL, 0, fs->flags);
297: if (fs->s == NULL)
298: return (-1);
299: fs->wl = fs->s->curw;
300: fs->idx = fs->wl->idx;
301: fs->w = fs->wl->window;
302: fs->wp = fs->w->active;
303:
304: return (0);
305: }
306:
307: /* Work out the best current client. */
308: struct client *
309: cmd_find_current_client(struct cmd_q *cmdq)
310: {
311: struct cmd_find_state current;
312: struct session *s;
313: struct client *c, **clist = NULL;
314: u_int csize;
315:
316: /* If the queue client has a session, use it. */
317: if (cmdq->client != NULL && cmdq->client->session != NULL)
318: return (cmdq->client);
319:
320: /* Otherwise find the current session. */
321: cmd_find_clear_state(¤t, cmdq, 0);
322: if (cmd_find_current_session(¤t) != 0)
323: return (NULL);
324:
325: /* If it is attached, find the best of it's clients. */
326: s = current.s;
327: if (~s->flags & SESSION_UNATTACHED) {
328: csize = 0;
329: TAILQ_FOREACH(c, &clients, entry) {
330: if (c->session != s)
331: continue;
332: clist = xreallocarray (clist, csize + 1, sizeof *clist);
333: clist[csize++] = c;
334: }
335: if (csize != 0) {
336: c = cmd_find_best_client(clist, csize);
337: if (c != NULL) {
338: free(clist);
339: return (c);
340: }
341: }
342: free(clist);
343: }
344:
345: /* Otherwise pick best of all clients. */
346: return (cmd_find_best_client(NULL, 0));
347: }
348:
349: /* Maps string in table. */
350: const char *
351: cmd_find_map_table(const char *table[][2], const char *s)
352: {
353: u_int i;
354:
355: for (i = 0; table[i][0] != NULL; i++) {
356: if (strcmp(s, table[i][0]) == 0)
357: return (table[i][1]);
358: }
359: return (s);
360: }
361:
362: /* Find session from string. Fills in s. */
363: int
364: cmd_find_get_session(struct cmd_find_state *fs, const char *session)
365: {
366: struct session *s, *s_loop;
367:
368: log_debug("%s: %s", __func__, session);
369:
370: /* Check for session ids starting with $. */
371: if (*session == '$') {
372: fs->s = session_find_by_id_str(session);
373: if (fs->s == NULL)
374: return (-1);
375: return (0);
376: }
377:
378: /* Look for exactly this session. */
379: fs->s = session_find(session);
380: if (fs->s != NULL)
381: return (0);
382:
383: /* Otherwise look for prefix. */
384: s = NULL;
385: RB_FOREACH(s_loop, sessions, &sessions) {
386: if (strncmp(session, s_loop->name, strlen(session)) == 0) {
387: if (s != NULL)
388: return (-1);
389: s = s_loop;
390: }
391: }
392: if (s != NULL) {
393: fs->s = s;
394: return (0);
395: }
396:
397: /* Then as a pattern. */
398: s = NULL;
399: RB_FOREACH(s_loop, sessions, &sessions) {
400: if (fnmatch(session, s_loop->name, 0) == 0) {
401: if (s != NULL)
402: return (-1);
403: s = s_loop;
404: }
405: }
406: if (s != NULL) {
407: fs->s = s;
408: return (0);
409: }
410:
411: return (-1);
412: }
413:
414: /* Find window from string. Fills in s, wl, w. */
415: int
416: cmd_find_get_window(struct cmd_find_state *fs, const char *window)
417: {
418: log_debug("%s: %s", __func__, window);
419:
420: /* Check for window ids starting with @. */
421: if (*window == '@') {
422: fs->w = window_find_by_id_str(window);
423: if (fs->w == NULL)
424: return (-1);
425: return (cmd_find_best_session_with_window(fs));
426: }
427:
428: /* Not a window id, so use the current session. */
429: fs->s = fs->current->s;
430:
431: /* We now only need to find the winlink in this session. */
1.4 nicm 432: if (cmd_find_get_window_with_session(fs, window) == 0)
433: return (0);
434:
435: /* Otherwise try as a session itself. */
436: if (cmd_find_get_session(fs, window) == 0) {
1.6 ! nicm 437: if (~fs->flags & CMD_FIND_WINDOW_INDEX) {
! 438: fs->wl = fs->s->curw;
! 439: fs->w = fs->wl->window;
! 440: fs->idx = fs->wl->idx;
! 441: }
1.4 nicm 442: return (0);
443: }
444:
445: return (-1);
1.1 nicm 446: }
447:
448: /*
449: * Find window from string, assuming it is in given session. Needs s, fills in
450: * wl and w.
451: */
452: int
453: cmd_find_get_window_with_session(struct cmd_find_state *fs, const char *window)
454: {
455: struct winlink *wl;
456: const char *errstr;
457: int idx, n;
458: struct session *s;
459:
460: log_debug("%s: %s", __func__, window);
461:
462: /* Check for window ids starting with @. */
463: if (*window == '@') {
464: fs->w = window_find_by_id_str(window);
465: if (fs->w == NULL || !session_has(fs->s, fs->w))
466: return (-1);
467: return (cmd_find_best_winlink_with_window(fs));
468: }
469:
470: /* Try as an offset. */
471: if (window[0] == '+' || window[0] == '-') {
472: if (window[1] != '\0')
473: n = strtonum(window + 1, 1, INT_MAX, NULL);
474: else
475: n = 1;
476: s = fs->s;
477: if (fs->flags & CMD_FIND_WINDOW_INDEX) {
478: if (window[0] == '+') {
479: if (INT_MAX - s->curw->idx < n)
480: return (-1);
481: fs->idx = s->curw->idx + n;
482: } else {
483: if (n < s->curw->idx)
484: return (-1);
485: fs->idx = s->curw->idx - n;
486: }
487: return (0);
488: }
489: if (window[0] == '+')
490: fs->wl = winlink_next_by_number(s->curw, s, n);
491: else
492: fs->wl = winlink_previous_by_number(s->curw, s, n);
493: if (fs->wl != NULL) {
494: fs->idx = fs->wl->idx;
495: fs->w = fs->wl->window;
496: return (0);
497: }
498: }
499:
500: /* Try special characters. */
501: if (strcmp(window, "!") == 0) {
502: fs->wl = TAILQ_FIRST(&fs->s->lastw);
503: if (fs->wl == NULL)
504: return (-1);
505: fs->idx = fs->wl->idx;
506: fs->w = fs->wl->window;
507: return (0);
508: } else if (strcmp(window, "^") == 0) {
509: fs->wl = RB_MIN(winlinks, &fs->s->windows);
510: if (fs->wl == NULL)
511: return (-1);
512: fs->idx = fs->wl->idx;
513: fs->w = fs->wl->window;
514: return (0);
515: } else if (strcmp(window, "$") == 0) {
516: fs->wl = RB_MAX(winlinks, &fs->s->windows);
517: if (fs->wl == NULL)
518: return (-1);
519: fs->idx = fs->wl->idx;
520: fs->w = fs->wl->window;
521: return (0);
522: }
523:
524: /* First see if this is a valid window index in this session. */
525: idx = strtonum(window, 0, INT_MAX, &errstr);
526: if (errstr == NULL) {
527: if (fs->flags & CMD_FIND_WINDOW_INDEX) {
528: fs->idx = idx;
529: return (0);
530: }
531: fs->wl = winlink_find_by_index(&fs->s->windows, idx);
532: if (fs->wl != NULL) {
533: fs->w = fs->wl->window;
534: return (0);
535: }
536: }
537:
538: /* Look for exact matches, error if more than one. */
539: fs->wl = NULL;
540: RB_FOREACH(wl, winlinks, &fs->s->windows) {
541: if (strcmp(window, wl->window->name) == 0) {
542: if (fs->wl != NULL)
543: return (-1);
544: fs->wl = wl;
545: }
546: }
547: if (fs->wl != NULL) {
548: fs->idx = fs->wl->idx;
549: fs->w = fs->wl->window;
550: return (0);
551: }
552:
553: /* Try as the start of a window name, error if multiple. */
554: fs->wl = NULL;
555: RB_FOREACH(wl, winlinks, &fs->s->windows) {
556: if (strncmp(window, wl->window->name, strlen(window)) == 0) {
557: if (fs->wl != NULL)
558: return (-1);
559: fs->wl = wl;
560: }
561: }
562: if (fs->wl != NULL) {
563: fs->idx = fs->wl->idx;
564: fs->w = fs->wl->window;
565: return (0);
566: }
567:
568: /* Now look for pattern matches, again error if multiple. */
569: fs->wl = NULL;
570: RB_FOREACH(wl, winlinks, &fs->s->windows) {
571: if (fnmatch(window, wl->window->name, 0) == 0) {
572: if (fs->wl != NULL)
573: return (-1);
574: fs->wl = wl;
575: }
576: }
577: if (fs->wl != NULL) {
578: fs->idx = fs->wl->idx;
579: fs->w = fs->wl->window;
580: return (0);
581: }
582:
583: return (-1);
584: }
585:
586: /* Find window from given pane. Needs wp, fills in s and wl and w. */
587: int
588: cmd_find_get_window_with_pane(struct cmd_find_state *fs)
589: {
590: log_debug("%s", __func__);
591:
592: fs->w = fs->wp->window;
593: return (cmd_find_best_session_with_window(fs));
594: }
595:
596: /* Find pane from string. Fills in s, wl, w, wp. */
597: int
598: cmd_find_get_pane(struct cmd_find_state *fs, const char *pane)
599: {
600: log_debug("%s: %s", __func__, pane);
601:
602: /* Check for pane ids starting with %. */
603: if (*pane == '%') {
604: fs->wp = window_pane_find_by_id_str(pane);
605: if (fs->wp == NULL)
606: return (-1);
607: fs->w = fs->wp->window;
608: return (cmd_find_best_session_with_window(fs));
609: }
610:
1.4 nicm 611: /* Not a pane id, so try the current session and window. */
1.1 nicm 612: fs->s = fs->current->s;
613: fs->wl = fs->current->wl;
614: fs->idx = fs->current->idx;
615: fs->w = fs->current->w;
616:
617: /* We now only need to find the pane in this window. */
1.4 nicm 618: if (cmd_find_get_pane_with_window(fs, pane) == 0)
619: return (0);
620:
621: /* Otherwise try as a window itself (this will also try as session). */
622: if (cmd_find_get_window(fs, pane) == 0) {
623: fs->wp = fs->w->active;
624: return (0);
625: }
626:
627: return (-1);
1.1 nicm 628: }
629:
630: /*
631: * Find pane from string, assuming it is in given session. Needs s, fills in wl
632: * and w and wp.
633: */
634: int
635: cmd_find_get_pane_with_session(struct cmd_find_state *fs, const char *pane)
636: {
637: log_debug("%s: %s", __func__, pane);
638:
639: /* Check for pane ids starting with %. */
640: if (*pane == '%') {
641: fs->wp = window_pane_find_by_id_str(pane);
642: if (fs->wp == NULL)
643: return (-1);
644: fs->w = fs->wp->window;
645: return (cmd_find_best_winlink_with_window(fs));
646: }
647:
648: /* Otherwise use the current window. */
649: fs->wl = fs->s->curw;
650: fs->idx = fs->wl->idx;
651: fs->w = fs->wl->window;
652:
653: /* Now we just need to look up the pane. */
654: return (cmd_find_get_pane_with_window(fs, pane));
655: }
656:
657: /*
658: * Find pane from string, assuming it is in the given window. Needs w, fills in
659: * wp.
660: */
661: int
662: cmd_find_get_pane_with_window(struct cmd_find_state *fs, const char *pane)
663: {
664: const char *errstr;
665: int idx;
666: struct window_pane *wp;
667: u_int n;
668:
669: log_debug("%s: %s", __func__, pane);
670:
671: /* Check for pane ids starting with %. */
672: if (*pane == '%') {
673: fs->wp = window_pane_find_by_id_str(pane);
674: if (fs->wp == NULL || fs->wp->window != fs->w)
675: return (-1);
676: return (0);
677: }
678:
679: /* Try special characters. */
680: if (strcmp(pane, "!") == 0) {
681: if (fs->w->last == NULL)
682: return (-1);
683: fs->wp = fs->w->last;
684: return (0);
685: } else if (strcmp(pane, "{up}") == 0) {
686: fs->wp = window_pane_find_up(fs->w->active);
687: if (fs->wp == NULL)
688: return (-1);
689: return (0);
690: } else if (strcmp(pane, "{down}") == 0) {
691: fs->wp = window_pane_find_down(fs->w->active);
692: if (fs->wp == NULL)
693: return (-1);
694: return (0);
695: } else if (strcmp(pane, "{left}") == 0) {
696: fs->wp = window_pane_find_left(fs->w->active);
697: if (fs->wp == NULL)
698: return (-1);
699: return (0);
700: } else if (strcmp(pane, "{right}") == 0) {
701: fs->wp = window_pane_find_right(fs->w->active);
702: if (fs->wp == NULL)
703: return (-1);
704: return (0);
705: }
706:
707: /* Try as an offset. */
708: if (pane[0] == '+' || pane[0] == '-') {
709: if (pane[1] != '\0')
710: n = strtonum(pane + 1, 1, INT_MAX, NULL);
711: else
712: n = 1;
713: wp = fs->w->active;
714: if (pane[0] == '+')
715: fs->wp = window_pane_next_by_number(fs->w, wp, n);
716: else
717: fs->wp = window_pane_previous_by_number(fs->w, wp, n);
718: if (fs->wp != NULL)
719: return (0);
720: }
721:
722: /* Get pane by index. */
723: idx = strtonum(pane, 0, INT_MAX, &errstr);
724: if (errstr == NULL) {
725: fs->wp = window_pane_at_index(fs->w, idx);
726: if (fs->wp != NULL)
727: return (0);
728: }
729:
730: /* Try as a description. */
731: fs->wp = window_find_string(fs->w, pane);
732: if (fs->wp != NULL)
733: return (0);
734:
735: return (-1);
736: }
737:
738: /* Clear state. */
739: void
740: cmd_find_clear_state(struct cmd_find_state *fs, struct cmd_q *cmdq, int flags)
741: {
742: memset (fs, 0, sizeof *fs);
743:
744: fs->cmdq = cmdq;
745: fs->flags = flags;
746:
747: fs->idx = -1;
748: }
749:
750: /* Split target into pieces and resolve for the given type. */
751: struct cmd_find_state *
752: cmd_find_target(struct cmd_q *cmdq, const char *target, enum cmd_find_type type,
753: int flags)
754: {
755: static struct cmd_find_state fs, current;
756: struct mouse_event *m;
757: char *colon, *period, *copy = NULL;
758: const char *session, *window, *pane;
759:
760: /* Find current state. */
761: cmd_find_clear_state(¤t, cmdq, flags);
762: if (cmd_find_current_session(¤t) != 0) {
763: if (~flags & CMD_FIND_QUIET)
764: cmdq_error(cmdq, "no current session");
765: goto error;
766: }
767:
768: /* Clear new state. */
769: cmd_find_clear_state(&fs, cmdq, flags);
770: fs.current = ¤t;
771:
772: /* An empty or NULL target is the current. */
773: if (target == NULL || *target == '\0')
774: goto current;
775:
776: /* Mouse target is a plain = or {mouse}. */
777: if (strcmp(target, "=") == 0 || strcmp(target, "{mouse}") == 0) {
778: m = &cmdq->item->mouse;
779: switch (type) {
780: case CMD_FIND_PANE:
781: fs.wp = cmd_mouse_pane(m, &fs.s, &fs.wl);
782: if (fs.wp != NULL)
783: fs.w = fs.wl->window;
784: break;
785: case CMD_FIND_WINDOW:
786: case CMD_FIND_SESSION:
787: fs.wl = cmd_mouse_window(m, &fs.s);
788: if (fs.wl != NULL) {
789: fs.w = fs.wl->window;
790: fs.wp = fs.w->active;
791: }
792: break;
793: }
794: if (fs.wp == NULL) {
795: if (~flags & CMD_FIND_QUIET)
796: cmdq_error(cmdq, "no mouse target");
797: goto error;
798: }
799: return (&fs);
800: }
801: copy = xstrdup(target);
802:
803: /* Find separators if they exist. */
804: colon = strchr(copy, ':');
805: if (colon != NULL)
806: *colon++ = '\0';
807: if (colon == NULL)
808: period = strchr(copy, '.');
809: else
810: period = strchr(colon, '.');
811: if (period != NULL)
812: *period++ = '\0';
813:
814: /* Set session, window and pane parts. */
815: session = window = pane = NULL;
816: if (colon != NULL && period != NULL) {
817: session = copy;
818: window = colon;
819: pane = period;
820: } else if (colon != NULL && period == NULL) {
821: session = copy;
822: window = colon;
823: } else if (colon == NULL && period != NULL) {
824: window = copy;
825: pane = period;
826: } else {
827: if (*copy == '$')
828: session = copy;
829: else if (*copy == '@')
830: window = copy;
831: else if (*copy == '%')
832: pane = copy;
833: else {
834: switch (type) {
835: case CMD_FIND_SESSION:
836: session = copy;
837: break;
838: case CMD_FIND_WINDOW:
839: window = copy;
840: break;
841: case CMD_FIND_PANE:
842: pane = copy;
843: break;
844: }
845: }
846: }
847:
848: /* Empty is the same as NULL. */
849: if (session != NULL && *session == '\0')
850: session = NULL;
851: if (window != NULL && *window == '\0')
852: window = NULL;
853: if (pane != NULL && *pane == '\0')
854: pane = NULL;
855:
856: /* Map though conversion table. */
857: if (session != NULL)
858: session = cmd_find_map_table(cmd_find_session_table, session);
859: if (window != NULL)
860: window = cmd_find_map_table(cmd_find_window_table, window);
861: if (pane != NULL)
862: pane = cmd_find_map_table(cmd_find_pane_table, pane);
863:
864: log_debug("target %s (flags %#x): session=%s, window=%s, pane=%s",
865: target, flags, session == NULL ? "none" : session,
866: window == NULL ? "none" : window, pane == NULL ? "none" : pane);
867:
868: /* No pane is allowed if want an index. */
869: if (pane != NULL && (flags & CMD_FIND_WINDOW_INDEX)) {
870: if (~flags & CMD_FIND_QUIET)
871: cmdq_error(cmdq, "can't specify pane here");
872: goto error;
873: }
874:
875: /* If the session isn't NULL, look it up. */
876: if (session != NULL) {
877: /* This will fill in session. */
878: if (cmd_find_get_session(&fs, session) != 0)
879: goto no_session;
880:
881: /* If window and pane are NULL, use that session's current. */
882: if (window == NULL && pane == NULL) {
883: fs.wl = fs.s->curw;
884: fs.idx = -1;
885: fs.w = fs.wl->window;
886: fs.wp = fs.w->active;
887: goto found;
888: }
889:
890: /* If window is present but pane not, find window in session. */
891: if (window != NULL && pane == NULL) {
892: /* This will fill in winlink and window. */
893: if (cmd_find_get_window_with_session(&fs, window) != 0)
894: goto no_window;
895: if (~flags & CMD_FIND_WINDOW_INDEX)
896: fs.wp = fs.wl->window->active;
897: goto found;
898: }
899:
900: /* If pane is present but window not, find pane. */
901: if (window == NULL && pane != NULL) {
902: /* This will fill in winlink and window and pane. */
903: if (cmd_find_get_pane_with_session(&fs, pane) != 0)
904: goto no_pane;
905: goto found;
906: }
907:
908: /*
909: * If window and pane are present, find both in session. This
910: * will fill in winlink and window.
911: */
912: if (cmd_find_get_window_with_session(&fs, window) != 0)
913: goto no_window;
914: /* This will fill in pane. */
915: if (cmd_find_get_pane_with_window(&fs, pane) != 0)
916: goto no_pane;
917: goto found;
918: }
919:
920: /* No session. If window and pane, try them. */
921: if (window != NULL && pane != NULL) {
922: /* This will fill in session, winlink and window. */
923: if (cmd_find_get_window(&fs, window) != 0)
924: goto no_window;
925: /* This will fill in pane. */
926: if (cmd_find_get_pane_with_window(&fs, pane) != 0)
927: goto no_pane;
928: goto found;
929: }
930:
931: /* If just window is present, try it. */
932: if (window != NULL && pane == NULL) {
933: /* This will fill in session, winlink and window. */
934: if (cmd_find_get_window(&fs, window) != 0)
935: goto no_window;
936: if (~flags & CMD_FIND_WINDOW_INDEX)
937: fs.wp = fs.wl->window->active;
938: goto found;
939: }
940:
941: /* If just pane is present, try it. */
942: if (window == NULL && pane != NULL) {
943: /* This will fill in session, winlink, window and pane. */
944: if (cmd_find_get_pane(&fs, pane) != 0)
945: goto no_pane;
946: goto found;
947: }
948:
949: current:
950: /* None is the current session. */
951: free(copy);
952: if (flags & CMD_FIND_WINDOW_INDEX)
953: current.idx = -1;
954: return (¤t);
955:
956: error:
957: free(copy);
958: return (NULL);
959:
960: found:
961: free(copy);
962: return (&fs);
963:
964: no_session:
965: if (~flags & CMD_FIND_QUIET)
966: cmdq_error(cmdq, "can't find session %s", session);
967: goto error;
968:
969: no_window:
970: if (~flags & CMD_FIND_QUIET)
971: cmdq_error(cmdq, "can't find window %s", window);
972: goto error;
973:
974: no_pane:
975: if (~flags & CMD_FIND_QUIET)
976: cmdq_error(cmdq, "can't find pane %s", pane);
977: goto error;
978: }
979:
980: /* Log the result. */
981: void
982: cmd_find_log_state(const char *f, const char *target, struct cmd_find_state *fs)
983: {
984: log_debug("%s: target %s%s", f, target == NULL ? "none" : target,
985: fs != NULL ? "" : " (failed)");
986: if (fs == NULL)
987: return;
988: if (fs->s != NULL)
989: log_debug("\ts=$%u", fs->s->id);
990: else
991: log_debug("\ts=none");
992: if (fs->wl != NULL) {
993: log_debug("\twl=%u %d w=@%u %s", fs->wl->idx,
994: fs->wl->window == fs->w, fs->w->id, fs->w->name);
995: } else
996: log_debug("\twl=none");
997: if (fs->wp != NULL)
998: log_debug("\twp=%%%u", fs->wp->id);
999: else
1000: log_debug("\twp=none");
1001: if (fs->idx != -1)
1002: log_debug("\tidx=%d", fs->idx);
1003: else
1004: log_debug("\tidx=none");
1005: }
1006:
1007: /* Find the current session. */
1008: struct session *
1009: cmd_find_current(struct cmd_q *cmdq)
1010: {
1011: struct cmd_find_state *fs;
1012: int flags = CMD_FIND_QUIET;
1013:
1014: fs = cmd_find_target(cmdq, NULL, CMD_FIND_SESSION, flags);
1015: cmd_find_log_state(__func__, NULL, fs);
1016: if (fs == NULL)
1017: return (NULL);
1018:
1019: return (fs->s);
1020: }
1021:
1022: /* Find the target session or report an error and return NULL. */
1023: struct session *
1024: cmd_find_session(struct cmd_q *cmdq, const char *target, int prefer_unattached)
1025: {
1026: struct cmd_find_state *fs;
1027: int flags = 0;
1028:
1029: if (prefer_unattached)
1030: flags |= CMD_FIND_PREFER_UNATTACHED;
1031:
1032: fs = cmd_find_target(cmdq, target, CMD_FIND_SESSION, flags);
1033: cmd_find_log_state(__func__, target, fs);
1034: if (fs == NULL)
1035: return (NULL);
1036:
1037: return (fs->s);
1038: }
1039:
1040: /* Find the target window or report an error and return NULL. */
1041: struct winlink *
1042: cmd_find_window(struct cmd_q *cmdq, const char *target, struct session **sp)
1043: {
1044: struct cmd_find_state *fs;
1045:
1046: fs = cmd_find_target(cmdq, target, CMD_FIND_WINDOW, 0);
1047: cmd_find_log_state(__func__, target, fs);
1048: if (fs == NULL)
1049: return (NULL);
1050:
1051: if (sp != NULL)
1052: *sp = fs->s;
1053: return (fs->wl);
1054: }
1055:
1056: /* Find the target pane and report an error and return NULL. */
1057: struct winlink *
1058: cmd_find_pane(struct cmd_q *cmdq, const char *target, struct session **sp,
1059: struct window_pane **wpp)
1060: {
1061: struct cmd_find_state *fs;
1062:
1063: fs = cmd_find_target(cmdq, target, CMD_FIND_PANE, 0);
1064: cmd_find_log_state(__func__, target, fs);
1065: if (fs == NULL)
1066: return (NULL);
1067:
1068: if (sp != NULL)
1069: *sp = fs->s;
1070: if (wpp != NULL)
1071: *wpp = fs->wp;
1072: return (fs->wl);
1073: }
1074:
1075: /* Find the target client or report an error and return NULL. */
1076: struct client *
1077: cmd_find_client(struct cmd_q *cmdq, const char *target, int quiet)
1078: {
1079: struct client *c;
1080: char *copy;
1081: size_t size;
1082: const char *path;
1083:
1084: /* A NULL argument means the current client. */
1085: if (target == NULL) {
1086: c = cmd_find_current_client(cmdq);
1087: if (c == NULL && !quiet)
1088: cmdq_error(cmdq, "no current client");
1089: return (c);
1090: }
1091: copy = xstrdup(target);
1092:
1093: /* Trim a single trailing colon if any. */
1094: size = strlen(copy);
1095: if (size != 0 && copy[size - 1] == ':')
1096: copy[size - 1] = '\0';
1097:
1098: /* Check path of each client. */
1099: TAILQ_FOREACH(c, &clients, entry) {
1100: if (c->session == NULL || c->tty.path == NULL)
1101: continue;
1102: path = c->tty.path;
1103:
1104: /* Try for exact match. */
1105: if (strcmp(copy, path) == 0)
1106: break;
1107:
1108: /* Try without leading /dev. */
1109: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
1110: continue;
1111: if (strcmp(copy, path + (sizeof _PATH_DEV) - 1) == 0)
1112: break;
1113: }
1114:
1115: /* If no client found, report an error. */
1116: if (c == NULL && !quiet)
1117: cmdq_error(cmdq, "can't find client %s", copy);
1118:
1119: free(copy);
1120: return (c);
1121: }
1122:
1123: /*
1124: * Find the target session and window index, whether or not it exists in the
1125: * session. Return -2 on error or -1 if no window index is specified. This is
1126: * used when parsing an argument for a window target that may not exist (for
1127: * example if it is going to be created).
1128: */
1129: int
1130: cmd_find_index(struct cmd_q *cmdq, const char *target, struct session **sp)
1131: {
1132: struct cmd_find_state *fs;
1133: int flags = CMD_FIND_WINDOW_INDEX;
1134:
1135: fs = cmd_find_target(cmdq, target, CMD_FIND_WINDOW, flags);
1136: cmd_find_log_state(__func__, target, fs);
1137: if (fs == NULL)
1138: return (-2);
1139:
1140: if (sp != NULL)
1141: *sp = fs->s;
1142: return (fs->idx);
1143: }