Annotation of src/usr.bin/tmux/cmd.c, Revision 1.55
1.55 ! nicm 1: /* $OpenBSD: cmd.c,v 1.54 2011/05/08 20:35:58 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 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: #include <sys/time.h>
21:
1.5 nicm 22: #include <fnmatch.h>
23: #include <paths.h>
1.1 nicm 24: #include <stdlib.h>
25: #include <string.h>
26: #include <unistd.h>
27:
28: #include "tmux.h"
29:
30: const struct cmd_entry *cmd_table[] = {
31: &cmd_attach_session_entry,
32: &cmd_bind_key_entry,
33: &cmd_break_pane_entry,
1.34 nicm 34: &cmd_capture_pane_entry,
1.42 nicm 35: &cmd_choose_buffer_entry,
1.15 nicm 36: &cmd_choose_client_entry,
1.1 nicm 37: &cmd_choose_session_entry,
38: &cmd_choose_window_entry,
39: &cmd_clear_history_entry,
40: &cmd_clock_mode_entry,
41: &cmd_command_prompt_entry,
42: &cmd_confirm_before_entry,
43: &cmd_copy_mode_entry,
44: &cmd_delete_buffer_entry,
45: &cmd_detach_client_entry,
1.7 nicm 46: &cmd_display_message_entry,
1.16 nicm 47: &cmd_display_panes_entry,
1.1 nicm 48: &cmd_find_window_entry,
49: &cmd_has_session_entry,
1.4 nicm 50: &cmd_if_shell_entry,
1.37 nicm 51: &cmd_join_pane_entry,
1.1 nicm 52: &cmd_kill_pane_entry,
53: &cmd_kill_server_entry,
54: &cmd_kill_session_entry,
55: &cmd_kill_window_entry,
1.45 nicm 56: &cmd_last_pane_entry,
1.1 nicm 57: &cmd_last_window_entry,
58: &cmd_link_window_entry,
59: &cmd_list_buffers_entry,
60: &cmd_list_clients_entry,
61: &cmd_list_commands_entry,
62: &cmd_list_keys_entry,
1.23 nicm 63: &cmd_list_panes_entry,
1.1 nicm 64: &cmd_list_sessions_entry,
65: &cmd_list_windows_entry,
66: &cmd_load_buffer_entry,
1.19 nicm 67: &cmd_lock_client_entry,
1.1 nicm 68: &cmd_lock_server_entry,
1.19 nicm 69: &cmd_lock_session_entry,
1.1 nicm 70: &cmd_move_window_entry,
71: &cmd_new_session_entry,
72: &cmd_new_window_entry,
73: &cmd_next_layout_entry,
74: &cmd_next_window_entry,
75: &cmd_paste_buffer_entry,
1.24 nicm 76: &cmd_pipe_pane_entry,
1.1 nicm 77: &cmd_previous_layout_entry,
78: &cmd_previous_window_entry,
79: &cmd_refresh_client_entry,
80: &cmd_rename_session_entry,
81: &cmd_rename_window_entry,
82: &cmd_resize_pane_entry,
83: &cmd_respawn_window_entry,
84: &cmd_rotate_window_entry,
1.17 nicm 85: &cmd_run_shell_entry,
1.1 nicm 86: &cmd_save_buffer_entry,
87: &cmd_select_layout_entry,
88: &cmd_select_pane_entry,
89: &cmd_select_window_entry,
90: &cmd_send_keys_entry,
91: &cmd_send_prefix_entry,
92: &cmd_server_info_entry,
93: &cmd_set_buffer_entry,
1.13 nicm 94: &cmd_set_environment_entry,
1.1 nicm 95: &cmd_set_option_entry,
96: &cmd_set_window_option_entry,
97: &cmd_show_buffer_entry,
1.13 nicm 98: &cmd_show_environment_entry,
1.32 nicm 99: &cmd_show_messages_entry,
1.1 nicm 100: &cmd_show_options_entry,
101: &cmd_show_window_options_entry,
102: &cmd_source_file_entry,
103: &cmd_split_window_entry,
104: &cmd_start_server_entry,
105: &cmd_suspend_client_entry,
106: &cmd_swap_pane_entry,
107: &cmd_swap_window_entry,
108: &cmd_switch_client_entry,
109: &cmd_unbind_key_entry,
110: &cmd_unlink_window_entry,
111: NULL
112: };
113:
1.47 nicm 114: struct session *cmd_choose_session_list(struct sessionslist *);
1.52 nicm 115: struct session *cmd_choose_session(int);
1.31 nicm 116: struct client *cmd_choose_client(struct clients *);
1.5 nicm 117: struct client *cmd_lookup_client(const char *);
118: struct session *cmd_lookup_session(const char *, int *);
119: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 120: int cmd_lookup_index(struct session *, const char *, int *);
1.51 nicm 121: struct window_pane *cmd_lookup_paneid(const char *);
122: struct session *cmd_pane_session(struct cmd_ctx *,
123: struct window_pane *, struct winlink **);
1.43 nicm 124: struct winlink *cmd_find_window_offset(const char *, struct session *, int *);
125: int cmd_find_index_offset(const char *, struct session *, int *);
1.51 nicm 126: struct window_pane *cmd_find_pane_offset(const char *, struct winlink *);
1.5 nicm 127:
1.10 nicm 128: int
129: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
130: {
131: size_t arglen;
132: int i;
133:
134: *buf = '\0';
135: for (i = 0; i < argc; i++) {
136: if (strlcpy(buf, argv[i], len) >= len)
137: return (-1);
138: arglen = strlen(argv[i]) + 1;
139: buf += arglen;
140: len -= arglen;
141: }
142:
143: return (0);
144: }
145:
146: int
147: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
148: {
149: int i;
150: size_t arglen;
151:
152: if (argc == 0)
153: return (0);
154: *argv = xcalloc(argc, sizeof **argv);
155:
156: buf[len - 1] = '\0';
157: for (i = 0; i < argc; i++) {
158: if (len == 0) {
159: cmd_free_argv(argc, *argv);
160: return (-1);
161: }
162:
163: arglen = strlen(buf) + 1;
164: (*argv)[i] = xstrdup(buf);
165: buf += arglen;
166: len -= arglen;
167: }
168:
169: return (0);
1.46 nicm 170: }
171:
172: char **
1.49 nicm 173: cmd_copy_argv(int argc, char *const *argv)
1.46 nicm 174: {
175: char **new_argv;
176: int i;
177:
178: if (argc == 0)
179: return (NULL);
180: new_argv = xcalloc(argc, sizeof *new_argv);
181: for (i = 0; i < argc; i++) {
182: if (argv[i] != NULL)
183: new_argv[i] = xstrdup(argv[i]);
184: }
185: return (new_argv);
1.10 nicm 186: }
187:
188: void
189: cmd_free_argv(int argc, char **argv)
190: {
191: int i;
192:
193: if (argc == 0)
1.35 nicm 194: return;
1.10 nicm 195: for (i = 0; i < argc; i++) {
196: if (argv[i] != NULL)
197: xfree(argv[i]);
198: }
199: xfree(argv);
200: }
201:
1.1 nicm 202: struct cmd *
203: cmd_parse(int argc, char **argv, char **cause)
204: {
205: const struct cmd_entry **entryp, *entry;
1.27 deraadt 206: struct cmd *cmd;
1.49 nicm 207: struct args *args;
1.1 nicm 208: char s[BUFSIZ];
1.49 nicm 209: int ambiguous = 0;
1.1 nicm 210:
211: *cause = NULL;
1.2 nicm 212: if (argc == 0) {
213: xasprintf(cause, "no command");
1.1 nicm 214: return (NULL);
1.2 nicm 215: }
1.1 nicm 216:
217: entry = NULL;
218: for (entryp = cmd_table; *entryp != NULL; entryp++) {
219: if ((*entryp)->alias != NULL &&
220: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 221: ambiguous = 0;
1.1 nicm 222: entry = *entryp;
223: break;
224: }
225:
226: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
227: continue;
228: if (entry != NULL)
1.3 nicm 229: ambiguous = 1;
1.1 nicm 230: entry = *entryp;
231:
232: /* Bail now if an exact match. */
233: if (strcmp(entry->name, argv[0]) == 0)
234: break;
235: }
1.3 nicm 236: if (ambiguous)
237: goto ambiguous;
1.1 nicm 238: if (entry == NULL) {
239: xasprintf(cause, "unknown command: %s", argv[0]);
240: return (NULL);
241: }
242:
1.49 nicm 243: args = args_parse(entry->args_template, argc, argv);
244: if (args == NULL)
245: goto usage;
246: if (entry->args_lower != -1 && args->argc < entry->args_lower)
247: goto usage;
248: if (entry->args_upper != -1 && args->argc > entry->args_upper)
249: goto usage;
250: if (entry->check != NULL && entry->check(args) != 0)
251: goto usage;
1.1 nicm 252:
253: cmd = xmalloc(sizeof *cmd);
254: cmd->entry = entry;
1.49 nicm 255: cmd->args = args;
1.1 nicm 256: return (cmd);
257:
258: ambiguous:
259: *s = '\0';
260: for (entryp = cmd_table; *entryp != NULL; entryp++) {
261: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
262: continue;
263: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
264: break;
265: if (strlcat(s, ", ", sizeof s) >= sizeof s)
266: break;
267: }
268: s[strlen(s) - 2] = '\0';
269: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
270: return (NULL);
271:
272: usage:
1.49 nicm 273: if (args != NULL)
274: args_free(args);
1.1 nicm 275: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
276: return (NULL);
277: }
278:
279: int
280: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
281: {
282: return (cmd->entry->exec(cmd, ctx));
283: }
284:
285: void
286: cmd_free(struct cmd *cmd)
287: {
1.49 nicm 288: if (cmd->args != NULL)
289: args_free(cmd->args);
1.1 nicm 290: xfree(cmd);
291: }
292:
293: size_t
294: cmd_print(struct cmd *cmd, char *buf, size_t len)
295: {
1.49 nicm 296: size_t off, used;
297:
298: off = xsnprintf(buf, len, "%s ", cmd->entry->name);
299: if (off < len) {
300: used = args_print(cmd->args, buf + off, len - off);
301: if (used == 0)
302: buf[off - 1] = '\0';
303: else {
304: off += used;
305: buf[off] = '\0';
306: }
307: }
308: return (off);
1.1 nicm 309: }
310:
1.5 nicm 311: /*
312: * Figure out the current session. Use: 1) the current session, if the command
1.31 nicm 313: * context has one; 2) the most recently used session containing the pty of the
314: * calling client, if any; 3) the session specified in the TMUX variable from
315: * the environment (as passed from the client); 4) the most recently used
316: * session from all sessions.
1.5 nicm 317: */
1.1 nicm 318: struct session *
1.52 nicm 319: cmd_current_session(struct cmd_ctx *ctx, int prefer_unattached)
1.1 nicm 320: {
321: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 322: struct client *c = ctx->cmdclient;
1.5 nicm 323: struct session *s;
1.47 nicm 324: struct sessionslist ss;
1.11 nicm 325: struct winlink *wl;
326: struct window_pane *wp;
327: int found;
1.1 nicm 328:
1.14 nicm 329: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
330: return (ctx->curclient->session);
1.1 nicm 331:
1.11 nicm 332: /*
333: * If the name of the calling client's pty is know, build a list of the
334: * sessions that contain it and if any choose either the first or the
335: * newest.
336: */
337: if (c != NULL && c->tty.path != NULL) {
338: ARRAY_INIT(&ss);
1.47 nicm 339: RB_FOREACH(s, sessions, &sessions) {
1.11 nicm 340: found = 0;
341: RB_FOREACH(wl, winlinks, &s->windows) {
342: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
343: if (strcmp(wp->tty, c->tty.path) == 0) {
344: found = 1;
345: break;
346: }
347: }
348: if (found)
349: break;
350: }
351: if (found)
352: ARRAY_ADD(&ss, s);
353: }
354:
1.47 nicm 355: s = cmd_choose_session_list(&ss);
1.11 nicm 356: ARRAY_FREE(&ss);
357: if (s != NULL)
358: return (s);
359: }
360:
361: /* Use the session from the TMUX environment variable. */
1.50 nicm 362: if (data != NULL && data->pid == getpid() && data->idx != -1) {
1.47 nicm 363: s = session_find_by_index(data->idx);
364: if (s != NULL)
365: return (s);
366: }
367:
1.52 nicm 368: return (cmd_choose_session(prefer_unattached));
1.47 nicm 369: }
370:
1.52 nicm 371: /*
372: * Find the most recently used session, preferring unattached if the flag is
373: * set.
374: */
1.47 nicm 375: struct session *
1.52 nicm 376: cmd_choose_session(int prefer_unattached)
1.47 nicm 377: {
378: struct session *s, *sbest;
379: struct timeval *tv = NULL;
380:
381: sbest = NULL;
382: RB_FOREACH(s, sessions, &sessions) {
1.52 nicm 383: if (tv == NULL || timercmp(&s->activity_time, tv, >) ||
384: (prefer_unattached &&
385: !(sbest->flags & SESSION_UNATTACHED) &&
386: (s->flags & SESSION_UNATTACHED))) {
1.47 nicm 387: sbest = s;
388: tv = &s->activity_time;
389: }
390: }
1.1 nicm 391:
1.47 nicm 392: return (sbest);
1.5 nicm 393: }
394:
1.31 nicm 395: /* Find the most recently used session from a list. */
1.5 nicm 396: struct session *
1.47 nicm 397: cmd_choose_session_list(struct sessionslist *ss)
1.5 nicm 398: {
1.31 nicm 399: struct session *s, *sbest;
1.5 nicm 400: struct timeval *tv = NULL;
401: u_int i;
402:
1.31 nicm 403: sbest = NULL;
1.11 nicm 404: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
405: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 406: continue;
407:
1.31 nicm 408: if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
409: sbest = s;
410: tv = &s->activity_time;
1.1 nicm 411: }
412: }
1.5 nicm 413:
1.31 nicm 414: return (sbest);
1.1 nicm 415: }
416:
1.30 nicm 417: /*
418: * Find the current client. First try the current client if set, then pick the
1.31 nicm 419: * most recently used of the clients attached to the current session if any,
420: * then of all clients.
1.30 nicm 421: */
422: struct client *
423: cmd_current_client(struct cmd_ctx *ctx)
424: {
425: struct session *s;
426: struct client *c;
427: struct clients cc;
428: u_int i;
429:
430: if (ctx->curclient != NULL)
431: return (ctx->curclient);
432:
433: /*
434: * No current client set. Find the current session and return the
435: * newest of its clients.
436: */
1.52 nicm 437: s = cmd_current_session(ctx, 0);
1.30 nicm 438: if (s != NULL && !(s->flags & SESSION_UNATTACHED)) {
439: ARRAY_INIT(&cc);
440: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
441: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
442: continue;
443: if (s == c->session)
444: ARRAY_ADD(&cc, c);
445: }
446:
1.31 nicm 447: c = cmd_choose_client(&cc);
1.30 nicm 448: ARRAY_FREE(&cc);
449: if (c != NULL)
450: return (c);
451: }
452:
1.31 nicm 453: return (cmd_choose_client(&clients));
1.30 nicm 454: }
455:
1.31 nicm 456: /* Choose the most recently used client from a list. */
1.20 nicm 457: struct client *
1.31 nicm 458: cmd_choose_client(struct clients *cc)
1.20 nicm 459: {
1.31 nicm 460: struct client *c, *cbest;
1.20 nicm 461: struct timeval *tv = NULL;
462: u_int i;
463:
1.31 nicm 464: cbest = NULL;
1.30 nicm 465: for (i = 0; i < ARRAY_LENGTH(cc); i++) {
466: if ((c = ARRAY_ITEM(cc, i)) == NULL)
1.20 nicm 467: continue;
468: if (c->session == NULL)
469: continue;
470:
1.31 nicm 471: if (tv == NULL || timercmp(&c->activity_time, tv, >)) {
472: cbest = c;
473: tv = &c->activity_time;
1.20 nicm 474: }
475: }
476:
1.31 nicm 477: return (cbest);
1.20 nicm 478: }
479:
1.5 nicm 480: /* Find the target client or report an error and return NULL. */
1.1 nicm 481: struct client *
482: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
483: {
1.30 nicm 484: struct client *c;
1.5 nicm 485: char *tmparg;
486: size_t arglen;
1.1 nicm 487:
1.5 nicm 488: /* A NULL argument means the current client. */
1.30 nicm 489: if (arg == NULL)
490: return (cmd_current_client(ctx));
1.5 nicm 491: tmparg = xstrdup(arg);
492:
493: /* Trim a single trailing colon if any. */
494: arglen = strlen(tmparg);
495: if (arglen != 0 && tmparg[arglen - 1] == ':')
496: tmparg[arglen - 1] = '\0';
497:
498: /* Find the client, if any. */
499: c = cmd_lookup_client(tmparg);
500:
501: /* If no client found, report an error. */
502: if (c == NULL)
503: ctx->error(ctx, "client not found: %s", tmparg);
504:
505: xfree(tmparg);
506: return (c);
507: }
508:
509: /*
510: * Lookup a client by device path. Either of a full match and a match without a
511: * leading _PATH_DEV ("/dev/") is accepted.
512: */
513: struct client *
514: cmd_lookup_client(const char *name)
515: {
516: struct client *c;
517: const char *path;
518: u_int i;
519:
520: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25 nicm 521: c = ARRAY_ITEM(&clients, i);
522: if (c == NULL || c->session == NULL)
1.5 nicm 523: continue;
524: path = c->tty.path;
525:
526: /* Check for exact matches. */
527: if (strcmp(name, path) == 0)
528: return (c);
529:
530: /* Check without leading /dev if present. */
531: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
532: continue;
533: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
534: return (c);
535: }
536:
537: return (NULL);
538: }
539:
540: /* Lookup a session by name. If no session is found, NULL is returned. */
541: struct session *
542: cmd_lookup_session(const char *name, int *ambiguous)
543: {
544: struct session *s, *sfound;
545:
546: *ambiguous = 0;
547:
548: /*
1.28 nicm 549: * Look for matches. First look for exact matches - session names must
550: * be unique so an exact match can't be ambigious and can just be
551: * returned.
1.5 nicm 552: */
1.47 nicm 553: if ((s = session_find(name)) != NULL)
554: return (s);
1.28 nicm 555:
556: /*
557: * Otherwise look for partial matches, returning early if it is found to
558: * be ambiguous.
559: */
560: sfound = NULL;
1.47 nicm 561: RB_FOREACH(s, sessions, &sessions) {
1.5 nicm 562: if (strncmp(name, s->name, strlen(name)) == 0 ||
563: fnmatch(name, s->name, 0) == 0) {
564: if (sfound != NULL) {
565: *ambiguous = 1;
566: return (NULL);
567: }
568: sfound = s;
569: }
570: }
1.35 nicm 571: return (sfound);
1.5 nicm 572: }
573:
574: /*
1.8 nicm 575: * Lookup a window or return -1 if not found or ambigious. First try as an
576: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
1.41 nicm 577: * idx if the window index is a valid number but there is no window with that
1.8 nicm 578: * index.
1.5 nicm 579: */
580: struct winlink *
581: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
582: {
583: struct winlink *wl, *wlfound;
584: const char *errstr;
585: u_int idx;
586:
587: *ambiguous = 0;
588:
589: /* First see if this is a valid window index in this session. */
590: idx = strtonum(name, 0, INT_MAX, &errstr);
591: if (errstr == NULL) {
592: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
593: return (wl);
594: }
1.35 nicm 595:
1.5 nicm 596: /* Look for exact matches, error if more than one. */
597: wlfound = NULL;
598: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 599: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 600: if (wlfound != NULL) {
601: *ambiguous = 1;
602: return (NULL);
603: }
604: wlfound = wl;
1.1 nicm 605: }
606: }
1.5 nicm 607: if (wlfound != NULL)
608: return (wlfound);
609:
610: /* Now look for pattern matches, again error if multiple. */
611: wlfound = NULL;
612: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 613: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
614: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 615: if (wlfound != NULL) {
616: *ambiguous = 1;
617: return (NULL);
618: }
619: wlfound = wl;
620: }
1.35 nicm 621: }
1.5 nicm 622: if (wlfound != NULL)
623: return (wlfound);
624:
625: return (NULL);
1.1 nicm 626: }
627:
1.8 nicm 628: /*
629: * Find a window index - if the window doesn't exist, check if it is a
630: * potential index and return it anyway.
631: */
632: int
633: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
634: {
635: struct winlink *wl;
636: const char *errstr;
637: u_int idx;
638:
639: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
640: return (wl->idx);
641: if (*ambiguous)
642: return (-1);
643:
644: idx = strtonum(name, 0, INT_MAX, &errstr);
645: if (errstr == NULL)
646: return (idx);
647:
648: return (-1);
649: }
650:
1.51 nicm 651: /*
652: * Lookup pane id. An initial % means a pane id. sp must already point to the
653: * current session.
654: */
655: struct window_pane *
656: cmd_lookup_paneid(const char *arg)
657: {
658: const char *errstr;
659: u_int paneid;
660:
661: if (*arg != '%')
662: return (NULL);
663:
664: paneid = strtonum(arg + 1, 0, UINT_MAX, &errstr);
665: if (errstr != NULL)
666: return (NULL);
667: return (window_pane_find_by_id(paneid));
668: }
669:
670: /* Find session and winlink for pane. */
671: struct session *
672: cmd_pane_session(struct cmd_ctx *ctx, struct window_pane *wp,
673: struct winlink **wlp)
674: {
675: struct session *s;
676: struct sessionslist ss;
677: struct winlink *wl;
678:
679: /* If this pane is in the current session, return that winlink. */
1.52 nicm 680: s = cmd_current_session(ctx, 0);
1.51 nicm 681: if (s != NULL) {
682: wl = winlink_find_by_window(&s->windows, wp->window);
683: if (wl != NULL) {
684: if (wlp != NULL)
685: *wlp = wl;
686: return (s);
687: }
688: }
689:
690: /* Otherwise choose from all sessions with this pane. */
691: ARRAY_INIT(&ss);
692: RB_FOREACH(s, sessions, &sessions) {
693: if (winlink_find_by_window(&s->windows, wp->window) != NULL)
694: ARRAY_ADD(&ss, s);
695: }
696: s = cmd_choose_session_list(&ss);
697: ARRAY_FREE(&ss);
698: if (wlp != NULL)
699: *wlp = winlink_find_by_window(&s->windows, wp->window);
700: return (s);
701: }
702:
1.5 nicm 703: /* Find the target session or report an error and return NULL. */
1.1 nicm 704: struct session *
1.52 nicm 705: cmd_find_session(struct cmd_ctx *ctx, const char *arg, int prefer_unattached)
1.1 nicm 706: {
1.51 nicm 707: struct session *s;
708: struct window_pane *wp;
709: struct client *c;
710: char *tmparg;
711: size_t arglen;
712: int ambiguous;
1.1 nicm 713:
1.5 nicm 714: /* A NULL argument means the current session. */
1.1 nicm 715: if (arg == NULL)
1.52 nicm 716: return (cmd_current_session(ctx, prefer_unattached));
1.5 nicm 717:
1.51 nicm 718: /* Lookup as pane id. */
719: if ((wp = cmd_lookup_paneid(arg)) != NULL)
720: return (cmd_pane_session(ctx, wp, NULL));
721:
1.5 nicm 722: /* Trim a single trailing colon if any. */
1.54 nicm 723: tmparg = xstrdup(arg);
1.5 nicm 724: arglen = strlen(tmparg);
725: if (arglen != 0 && tmparg[arglen - 1] == ':')
726: tmparg[arglen - 1] = '\0';
727:
1.53 nicm 728: /* An empty session name is the current session. */
729: if (*tmparg == '\0') {
1.54 nicm 730: xfree(tmparg);
1.53 nicm 731: return (cmd_current_session(ctx, prefer_unattached));
732: }
733:
1.5 nicm 734: /* Find the session, if any. */
735: s = cmd_lookup_session(tmparg, &ambiguous);
736:
737: /* If it doesn't, try to match it as a client. */
738: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
739: s = c->session;
740:
741: /* If no session found, report an error. */
742: if (s == NULL) {
743: if (ambiguous)
744: ctx->error(ctx, "more than one session: %s", tmparg);
745: else
746: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 747: }
1.5 nicm 748:
749: xfree(tmparg);
1.1 nicm 750: return (s);
751: }
752:
1.5 nicm 753: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 754: struct winlink *
755: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
756: {
1.51 nicm 757: struct session *s;
758: struct winlink *wl;
759: struct window_pane *wp;
760: const char *winptr;
761: char *sessptr = NULL;
762: int ambiguous = 0;
1.5 nicm 763:
764: /*
765: * Find the current session. There must always be a current session, if
766: * it can't be found, report an error.
767: */
1.52 nicm 768: if ((s = cmd_current_session(ctx, 0)) == NULL) {
1.5 nicm 769: ctx->error(ctx, "can't establish current session");
770: return (NULL);
771: }
772:
773: /* A NULL argument means the current session and window. */
774: if (arg == NULL) {
775: if (sp != NULL)
776: *sp = s;
777: return (s->curw);
778: }
779:
1.51 nicm 780: /* Lookup as pane id. */
781: if ((wp = cmd_lookup_paneid(arg)) != NULL) {
782: s = cmd_pane_session(ctx, wp, &wl);
783: if (sp != NULL)
784: *sp = s;
785: return (wl);
786: }
787:
1.5 nicm 788: /* Time to look at the argument. If it is empty, that is an error. */
789: if (*arg == '\0')
790: goto not_found;
791:
1.8 nicm 792: /* Find the separating colon and split into window and session. */
1.5 nicm 793: winptr = strchr(arg, ':');
794: if (winptr == NULL)
1.8 nicm 795: goto no_colon;
796: winptr++; /* skip : */
797: sessptr = xstrdup(arg);
798: *strchr(sessptr, ':') = '\0';
1.5 nicm 799:
800: /* Try to lookup the session if present. */
1.8 nicm 801: if (*sessptr != '\0') {
802: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 803: goto no_session;
804: }
805: if (sp != NULL)
806: *sp = s;
807:
808: /*
809: * Then work out the window. An empty string is the current window,
1.38 nicm 810: * otherwise try special cases then to look it up in the session.
1.5 nicm 811: */
1.8 nicm 812: if (*winptr == '\0')
1.5 nicm 813: wl = s->curw;
1.38 nicm 814: else if (winptr[0] == '!' && winptr[1] == '\0')
815: wl = TAILQ_FIRST(&s->lastw);
1.43 nicm 816: else if (winptr[0] == '+' || winptr[0] == '-')
817: wl = cmd_find_window_offset(winptr, s, &ambiguous);
818: else
1.38 nicm 819: wl = cmd_lookup_window(s, winptr, &ambiguous);
820: if (wl == NULL)
1.5 nicm 821: goto not_found;
1.35 nicm 822:
1.5 nicm 823: if (sessptr != NULL)
824: xfree(sessptr);
825: return (wl);
826:
1.8 nicm 827: no_colon:
1.38 nicm 828: /*
829: * No colon in the string, first try special cases, then as a window
830: * and lastly as a session.
831: */
832: if (arg[0] == '!' && arg[1] == '\0') {
833: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
834: goto not_found;
1.41 nicm 835: } else if (arg[0] == '+' || arg[0] == '-') {
1.43 nicm 836: if ((wl = cmd_find_window_offset(arg, s, &ambiguous)) == NULL)
1.41 nicm 837: goto lookup_session;
838: } else if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL)
839: goto lookup_session;
1.8 nicm 840:
841: if (sp != NULL)
842: *sp = s;
843:
844: return (wl);
845:
1.41 nicm 846: lookup_session:
847: if (ambiguous)
848: goto not_found;
1.53 nicm 849: if (*arg != '\0' && (s = cmd_lookup_session(arg, &ambiguous)) == NULL)
1.41 nicm 850: goto no_session;
851:
852: if (sp != NULL)
853: *sp = s;
854:
855: return (s->curw);
856:
1.5 nicm 857: no_session:
858: if (ambiguous)
1.8 nicm 859: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 860: else
1.8 nicm 861: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 862: if (sessptr != NULL)
863: xfree(sessptr);
864: return (NULL);
865:
866: not_found:
867: if (ambiguous)
868: ctx->error(ctx, "multiple windows: %s", arg);
869: else
870: ctx->error(ctx, "window not found: %s", arg);
871: if (sessptr != NULL)
872: xfree(sessptr);
873: return (NULL);
874: }
1.1 nicm 875:
1.43 nicm 876: struct winlink *
877: cmd_find_window_offset(const char *winptr, struct session *s, int *ambiguous)
878: {
879: struct winlink *wl;
880: int offset = 1;
881:
882: if (winptr[1] != '\0')
883: offset = strtonum(winptr + 1, 1, INT_MAX, NULL);
884: if (offset == 0)
885: wl = cmd_lookup_window(s, winptr, ambiguous);
886: else {
887: if (winptr[0] == '+')
888: wl = winlink_next_by_number(s->curw, s, offset);
889: else
890: wl = winlink_previous_by_number(s->curw, s, offset);
891: }
892:
893: return (wl);
894: }
895:
1.5 nicm 896: /*
897: * Find the target session and window index, whether or not it exists in the
898: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 899: * used when parsing an argument for a window target that may not exist (for
900: * example if it is going to be created).
1.5 nicm 901: */
902: int
903: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
904: {
905: struct session *s;
1.38 nicm 906: struct winlink *wl;
1.8 nicm 907: const char *winptr;
1.5 nicm 908: char *sessptr = NULL;
909: int idx, ambiguous = 0;
910:
911: /*
912: * Find the current session. There must always be a current session, if
913: * it can't be found, report an error.
914: */
1.52 nicm 915: if ((s = cmd_current_session(ctx, 0)) == NULL) {
1.5 nicm 916: ctx->error(ctx, "can't establish current session");
1.9 nicm 917: return (-2);
1.1 nicm 918: }
1.5 nicm 919:
920: /* A NULL argument means the current session and "no window" (-1). */
921: if (arg == NULL) {
922: if (sp != NULL)
923: *sp = s;
924: return (-1);
925: }
926:
927: /* Time to look at the argument. If it is empty, that is an error. */
928: if (*arg == '\0')
929: goto not_found;
930:
931: /* Find the separating colon. If none, assume the current session. */
932: winptr = strchr(arg, ':');
933: if (winptr == NULL)
1.8 nicm 934: goto no_colon;
935: winptr++; /* skip : */
936: sessptr = xstrdup(arg);
937: *strchr(sessptr, ':') = '\0';
1.5 nicm 938:
939: /* Try to lookup the session if present. */
940: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 941: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 942: goto no_session;
943: }
1.1 nicm 944: if (sp != NULL)
945: *sp = s;
946:
1.5 nicm 947: /*
1.8 nicm 948: * Then work out the window. An empty string is a new window otherwise
949: * try to look it up in the session.
1.5 nicm 950: */
1.8 nicm 951: if (*winptr == '\0')
1.38 nicm 952: idx = -1;
953: else if (winptr[0] == '!' && winptr[1] == '\0') {
954: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
955: goto not_found;
956: idx = wl->idx;
1.41 nicm 957: } else if (winptr[0] == '+' || winptr[0] == '-') {
1.43 nicm 958: if ((idx = cmd_find_index_offset(winptr, s, &ambiguous)) < 0)
1.41 nicm 959: goto invalid_index;
960: } else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1)
961: goto invalid_index;
1.35 nicm 962:
1.5 nicm 963: if (sessptr != NULL)
964: xfree(sessptr);
965: return (idx);
966:
1.8 nicm 967: no_colon:
1.38 nicm 968: /*
969: * No colon in the string, first try special cases, then as a window
970: * and lastly as a session.
971: */
972: if (arg[0] == '!' && arg[1] == '\0') {
973: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
974: goto not_found;
975: idx = wl->idx;
1.41 nicm 976: } else if (arg[0] == '+' || arg[0] == '-') {
1.43 nicm 977: if ((idx = cmd_find_index_offset(arg, s, &ambiguous)) < 0)
1.41 nicm 978: goto lookup_session;
979: } else if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1)
980: goto lookup_session;
1.8 nicm 981:
982: if (sp != NULL)
983: *sp = s;
984:
985: return (idx);
986:
1.41 nicm 987: lookup_session:
988: if (ambiguous)
989: goto not_found;
1.53 nicm 990: if (*arg != '\0' && (s = cmd_lookup_session(arg, &ambiguous)) == NULL)
1.41 nicm 991: goto no_session;
992:
993: if (sp != NULL)
994: *sp = s;
995:
996: return (-1);
997:
1.5 nicm 998: no_session:
999: if (ambiguous)
1.35 nicm 1000: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 1001: else
1.8 nicm 1002: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 1003: if (sessptr != NULL)
1004: xfree(sessptr);
1005: return (-2);
1006:
1.41 nicm 1007: invalid_index:
1008: if (ambiguous)
1009: goto not_found;
1010: ctx->error(ctx, "invalid index: %s", arg);
1011:
1012: if (sessptr != NULL)
1013: xfree(sessptr);
1014: return (-2);
1015:
1.5 nicm 1016: not_found:
1017: if (ambiguous)
1018: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 1019: else
1.5 nicm 1020: ctx->error(ctx, "window not found: %s", arg);
1021: if (sessptr != NULL)
1022: xfree(sessptr);
1023: return (-2);
1.12 nicm 1024: }
1025:
1.43 nicm 1026: int
1027: cmd_find_index_offset(const char *winptr, struct session *s, int *ambiguous)
1028: {
1029: int idx, offset = 1;
1030:
1031: if (winptr[1] != '\0')
1032: offset = strtonum(winptr + 1, 1, INT_MAX, NULL);
1033: if (offset == 0)
1034: idx = cmd_lookup_index(s, winptr, ambiguous);
1035: else {
1036: if (winptr[0] == '+') {
1037: if (s->curw->idx == INT_MAX)
1038: idx = cmd_lookup_index(s, winptr, ambiguous);
1039: else
1040: idx = s->curw->idx + offset;
1041: } else {
1042: if (s->curw->idx == 0)
1043: idx = cmd_lookup_index(s, winptr, ambiguous);
1044: else
1045: idx = s->curw->idx - offset;
1046: }
1047: }
1048:
1049: return (idx);
1050: }
1051:
1.12 nicm 1052: /*
1053: * Find the target session, window and pane number or report an error and
1054: * return NULL. The pane number is separated from the session:window by a .,
1055: * such as mysession:mywindow.0.
1056: */
1057: struct winlink *
1058: cmd_find_pane(struct cmd_ctx *ctx,
1059: const char *arg, struct session **sp, struct window_pane **wpp)
1060: {
1.55 ! nicm 1061: struct session *s;
! 1062: struct winlink *wl;
! 1063: const char *period, *errstr;
! 1064: char *winptr, *paneptr;
! 1065: u_int idx;
1.12 nicm 1066:
1067: /* Get the current session. */
1.52 nicm 1068: if ((s = cmd_current_session(ctx, 0)) == NULL) {
1.27 deraadt 1069: ctx->error(ctx, "can't establish current session");
1.12 nicm 1070: return (NULL);
1071: }
1072: if (sp != NULL)
1073: *sp = s;
1074:
1075: /* A NULL argument means the current session, window and pane. */
1076: if (arg == NULL) {
1077: *wpp = s->curw->window->active;
1078: return (s->curw);
1.51 nicm 1079: }
1080:
1081: /* Lookup as pane id. */
1082: if ((*wpp = cmd_lookup_paneid(arg)) != NULL) {
1083: s = cmd_pane_session(ctx, *wpp, &wl);
1084: if (sp != NULL)
1085: *sp = s;
1086: return (wl);
1.12 nicm 1087: }
1088:
1089: /* Look for a separating period. */
1090: if ((period = strrchr(arg, '.')) == NULL)
1091: goto no_period;
1092:
1093: /* Pull out the window part and parse it. */
1094: winptr = xstrdup(arg);
1095: winptr[period - arg] = '\0';
1096: if (*winptr == '\0')
1097: wl = s->curw;
1098: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
1099: goto error;
1100:
1101: /* Find the pane section and look it up. */
1102: paneptr = winptr + (period - arg) + 1;
1103: if (*paneptr == '\0')
1104: *wpp = wl->window->active;
1.43 nicm 1105: else if (paneptr[0] == '+' || paneptr[0] == '-')
1106: *wpp = cmd_find_pane_offset(paneptr, wl);
1107: else {
1.12 nicm 1108: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
1.36 nicm 1109: if (errstr != NULL)
1110: goto lookup_string;
1.12 nicm 1111: *wpp = window_pane_at_index(wl->window, idx);
1.36 nicm 1112: if (*wpp == NULL)
1113: goto lookup_string;
1.12 nicm 1114: }
1115:
1116: xfree(winptr);
1117: return (wl);
1118:
1.36 nicm 1119: lookup_string:
1120: /* Try pane string description. */
1.55 ! nicm 1121: if ((*wpp = window_find_string(wl->window, paneptr)) == NULL) {
1.36 nicm 1122: ctx->error(ctx, "can't find pane: %s", paneptr);
1123: goto error;
1124: }
1125:
1126: xfree(winptr);
1.39 nicm 1127: return (wl);
1.36 nicm 1128:
1.12 nicm 1129: no_period:
1130: /* Try as a pane number alone. */
1131: idx = strtonum(arg, 0, INT_MAX, &errstr);
1132: if (errstr != NULL)
1133: goto lookup_window;
1134:
1135: /* Try index in the current session and window. */
1136: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
1137: goto lookup_window;
1.35 nicm 1138:
1.12 nicm 1139: return (s->curw);
1140:
1141: lookup_window:
1.36 nicm 1142: /* Try pane string description. */
1.55 ! nicm 1143: if ((*wpp = window_find_string(s->curw->window, arg)) != NULL)
1.36 nicm 1144: return (s->curw);
1145:
1.12 nicm 1146: /* Try as a window and use the active pane. */
1147: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
1148: *wpp = wl->window->active;
1149: return (wl);
1.35 nicm 1150:
1.12 nicm 1151: error:
1152: xfree(winptr);
1153: return (NULL);
1.43 nicm 1154: }
1155:
1156: struct window_pane *
1157: cmd_find_pane_offset(const char *paneptr, struct winlink *wl)
1158: {
1159: struct window *w = wl->window;
1160: struct window_pane *wp = w->active;
1161: u_int offset = 1;
1162:
1163: if (paneptr[1] != '\0')
1164: offset = strtonum(paneptr + 1, 1, INT_MAX, NULL);
1165: if (offset > 0) {
1166: if (paneptr[0] == '+')
1167: wp = window_pane_next_by_number(w, wp, offset);
1168: else
1169: wp = window_pane_previous_by_number(w, wp, offset);
1170: }
1171:
1172: return (wp);
1.15 nicm 1173: }
1174:
1175: /* Replace the first %% or %idx in template by s. */
1176: char *
1177: cmd_template_replace(char *template, const char *s, int idx)
1178: {
1179: char ch;
1180: char *buf, *ptr;
1181: int replaced;
1182: size_t len;
1183:
1184: if (strstr(template, "%") == NULL)
1185: return (xstrdup(template));
1186:
1187: buf = xmalloc(1);
1188: *buf = '\0';
1189: len = 0;
1190: replaced = 0;
1191:
1192: ptr = template;
1193: while (*ptr != '\0') {
1194: switch (ch = *ptr++) {
1195: case '%':
1196: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
1197: if (*ptr != '%' || replaced)
1198: break;
1199: replaced = 1;
1200: }
1201: ptr++;
1202:
1203: len += strlen(s);
1204: buf = xrealloc(buf, 1, len + 1);
1205: strlcat(buf, s, len + 1);
1206: continue;
1207: }
1208: buf = xrealloc(buf, 1, len + 2);
1209: buf[len++] = ch;
1210: buf[len] = '\0';
1211: }
1212:
1213: return (buf);
1.1 nicm 1214: }
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