Annotation of src/usr.bin/tmux/cmd.c, Revision 1.47
1.47 ! nicm 1: /* $OpenBSD: cmd.c,v 1.46 2010/10/29 20:11:57 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_buffer_entry,
44: &cmd_copy_mode_entry,
45: &cmd_delete_buffer_entry,
46: &cmd_detach_client_entry,
1.7 nicm 47: &cmd_display_message_entry,
1.16 nicm 48: &cmd_display_panes_entry,
1.1 nicm 49: &cmd_find_window_entry,
50: &cmd_has_session_entry,
1.4 nicm 51: &cmd_if_shell_entry,
1.37 nicm 52: &cmd_join_pane_entry,
1.1 nicm 53: &cmd_kill_pane_entry,
54: &cmd_kill_server_entry,
55: &cmd_kill_session_entry,
56: &cmd_kill_window_entry,
1.45 nicm 57: &cmd_last_pane_entry,
1.1 nicm 58: &cmd_last_window_entry,
59: &cmd_link_window_entry,
60: &cmd_list_buffers_entry,
61: &cmd_list_clients_entry,
62: &cmd_list_commands_entry,
63: &cmd_list_keys_entry,
1.23 nicm 64: &cmd_list_panes_entry,
1.1 nicm 65: &cmd_list_sessions_entry,
66: &cmd_list_windows_entry,
67: &cmd_load_buffer_entry,
1.19 nicm 68: &cmd_lock_client_entry,
1.1 nicm 69: &cmd_lock_server_entry,
1.19 nicm 70: &cmd_lock_session_entry,
1.1 nicm 71: &cmd_move_window_entry,
72: &cmd_new_session_entry,
73: &cmd_new_window_entry,
74: &cmd_next_layout_entry,
75: &cmd_next_window_entry,
76: &cmd_paste_buffer_entry,
1.24 nicm 77: &cmd_pipe_pane_entry,
1.1 nicm 78: &cmd_previous_layout_entry,
79: &cmd_previous_window_entry,
80: &cmd_refresh_client_entry,
81: &cmd_rename_session_entry,
82: &cmd_rename_window_entry,
83: &cmd_resize_pane_entry,
84: &cmd_respawn_window_entry,
85: &cmd_rotate_window_entry,
1.17 nicm 86: &cmd_run_shell_entry,
1.1 nicm 87: &cmd_save_buffer_entry,
88: &cmd_select_layout_entry,
89: &cmd_select_pane_entry,
90: &cmd_select_window_entry,
91: &cmd_send_keys_entry,
92: &cmd_send_prefix_entry,
93: &cmd_server_info_entry,
94: &cmd_set_buffer_entry,
1.13 nicm 95: &cmd_set_environment_entry,
1.1 nicm 96: &cmd_set_option_entry,
97: &cmd_set_window_option_entry,
98: &cmd_show_buffer_entry,
1.13 nicm 99: &cmd_show_environment_entry,
1.32 nicm 100: &cmd_show_messages_entry,
1.1 nicm 101: &cmd_show_options_entry,
102: &cmd_show_window_options_entry,
103: &cmd_source_file_entry,
104: &cmd_split_window_entry,
105: &cmd_start_server_entry,
106: &cmd_suspend_client_entry,
107: &cmd_swap_pane_entry,
108: &cmd_swap_window_entry,
109: &cmd_switch_client_entry,
110: &cmd_unbind_key_entry,
111: &cmd_unlink_window_entry,
112: NULL
113: };
114:
1.47 ! nicm 115: struct session *cmd_choose_session_list(struct sessionslist *);
! 116: struct session *cmd_choose_session(void);
1.31 nicm 117: struct client *cmd_choose_client(struct clients *);
1.5 nicm 118: struct client *cmd_lookup_client(const char *);
119: struct session *cmd_lookup_session(const char *, int *);
120: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 121: int cmd_lookup_index(struct session *, const char *, int *);
1.43 nicm 122: struct winlink *cmd_find_window_offset(const char *, struct session *, int *);
123: int cmd_find_index_offset(const char *, struct session *, int *);
124: struct window_pane *cmd_find_pane_offset(const char *, struct winlink *);
1.5 nicm 125:
1.10 nicm 126: int
127: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
128: {
129: size_t arglen;
130: int i;
131:
132: *buf = '\0';
133: for (i = 0; i < argc; i++) {
134: if (strlcpy(buf, argv[i], len) >= len)
135: return (-1);
136: arglen = strlen(argv[i]) + 1;
137: buf += arglen;
138: len -= arglen;
139: }
140:
141: return (0);
142: }
143:
144: int
145: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
146: {
147: int i;
148: size_t arglen;
149:
150: if (argc == 0)
151: return (0);
152: *argv = xcalloc(argc, sizeof **argv);
153:
154: buf[len - 1] = '\0';
155: for (i = 0; i < argc; i++) {
156: if (len == 0) {
157: cmd_free_argv(argc, *argv);
158: return (-1);
159: }
160:
161: arglen = strlen(buf) + 1;
162: (*argv)[i] = xstrdup(buf);
163: buf += arglen;
164: len -= arglen;
165: }
166:
167: return (0);
1.46 nicm 168: }
169:
170: char **
171: cmd_copy_argv(int argc, char **argv)
172: {
173: char **new_argv;
174: int i;
175:
176: if (argc == 0)
177: return (NULL);
178: new_argv = xcalloc(argc, sizeof *new_argv);
179: for (i = 0; i < argc; i++) {
180: if (argv[i] != NULL)
181: new_argv[i] = xstrdup(argv[i]);
182: }
183: return (new_argv);
1.10 nicm 184: }
185:
186: void
187: cmd_free_argv(int argc, char **argv)
188: {
189: int i;
190:
191: if (argc == 0)
1.35 nicm 192: return;
1.10 nicm 193: for (i = 0; i < argc; i++) {
194: if (argv[i] != NULL)
195: xfree(argv[i]);
196: }
197: xfree(argv);
198: }
199:
1.1 nicm 200: struct cmd *
201: cmd_parse(int argc, char **argv, char **cause)
202: {
203: const struct cmd_entry **entryp, *entry;
1.27 deraadt 204: struct cmd *cmd;
1.1 nicm 205: char s[BUFSIZ];
1.3 nicm 206: int opt, ambiguous = 0;
1.1 nicm 207:
208: *cause = NULL;
1.2 nicm 209: if (argc == 0) {
210: xasprintf(cause, "no command");
1.1 nicm 211: return (NULL);
1.2 nicm 212: }
1.1 nicm 213:
214: entry = NULL;
215: for (entryp = cmd_table; *entryp != NULL; entryp++) {
216: if ((*entryp)->alias != NULL &&
217: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 218: ambiguous = 0;
1.1 nicm 219: entry = *entryp;
220: break;
221: }
222:
223: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
224: continue;
225: if (entry != NULL)
1.3 nicm 226: ambiguous = 1;
1.1 nicm 227: entry = *entryp;
228:
229: /* Bail now if an exact match. */
230: if (strcmp(entry->name, argv[0]) == 0)
231: break;
232: }
1.3 nicm 233: if (ambiguous)
234: goto ambiguous;
1.1 nicm 235: if (entry == NULL) {
236: xasprintf(cause, "unknown command: %s", argv[0]);
237: return (NULL);
238: }
239:
240: optreset = 1;
241: optind = 1;
242: if (entry->parse == NULL) {
243: while ((opt = getopt(argc, argv, "")) != -1) {
244: switch (opt) {
245: default:
246: goto usage;
247: }
248: }
249: argc -= optind;
250: argv += optind;
251: if (argc != 0)
252: goto usage;
253: }
254:
255: cmd = xmalloc(sizeof *cmd);
256: cmd->entry = entry;
257: cmd->data = NULL;
258: if (entry->parse != NULL) {
259: if (entry->parse(cmd, argc, argv, cause) != 0) {
260: xfree(cmd);
261: return (NULL);
262: }
263: }
264: return (cmd);
265:
266: ambiguous:
267: *s = '\0';
268: for (entryp = cmd_table; *entryp != NULL; entryp++) {
269: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
270: continue;
271: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
272: break;
273: if (strlcat(s, ", ", sizeof s) >= sizeof s)
274: break;
275: }
276: s[strlen(s) - 2] = '\0';
277: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
278: return (NULL);
279:
280: usage:
281: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
282: return (NULL);
283: }
284:
285: int
286: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
287: {
288: return (cmd->entry->exec(cmd, ctx));
289: }
290:
291: void
292: cmd_free(struct cmd *cmd)
293: {
294: if (cmd->data != NULL && cmd->entry->free != NULL)
295: cmd->entry->free(cmd);
296: xfree(cmd);
297: }
298:
299: size_t
300: cmd_print(struct cmd *cmd, char *buf, size_t len)
301: {
1.33 nicm 302: if (cmd->entry->print == NULL)
1.1 nicm 303: return (xsnprintf(buf, len, "%s", cmd->entry->name));
304: return (cmd->entry->print(cmd, buf, len));
305: }
306:
1.5 nicm 307: /*
308: * Figure out the current session. Use: 1) the current session, if the command
1.31 nicm 309: * context has one; 2) the most recently used session containing the pty of the
310: * calling client, if any; 3) the session specified in the TMUX variable from
311: * the environment (as passed from the client); 4) the most recently used
312: * session from all sessions.
1.5 nicm 313: */
1.1 nicm 314: struct session *
315: cmd_current_session(struct cmd_ctx *ctx)
316: {
317: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 318: struct client *c = ctx->cmdclient;
1.5 nicm 319: struct session *s;
1.47 ! nicm 320: struct sessionslist ss;
1.11 nicm 321: struct winlink *wl;
322: struct window_pane *wp;
323: int found;
1.1 nicm 324:
1.14 nicm 325: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
326: return (ctx->curclient->session);
1.1 nicm 327:
1.11 nicm 328: /*
329: * If the name of the calling client's pty is know, build a list of the
330: * sessions that contain it and if any choose either the first or the
331: * newest.
332: */
333: if (c != NULL && c->tty.path != NULL) {
334: ARRAY_INIT(&ss);
1.47 ! nicm 335: RB_FOREACH(s, sessions, &sessions) {
1.11 nicm 336: found = 0;
337: RB_FOREACH(wl, winlinks, &s->windows) {
338: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
339: if (strcmp(wp->tty, c->tty.path) == 0) {
340: found = 1;
341: break;
342: }
343: }
344: if (found)
345: break;
346: }
347: if (found)
348: ARRAY_ADD(&ss, s);
349: }
350:
1.47 ! nicm 351: s = cmd_choose_session_list(&ss);
1.11 nicm 352: ARRAY_FREE(&ss);
353: if (s != NULL)
354: return (s);
355: }
356:
357: /* Use the session from the TMUX environment variable. */
1.47 ! nicm 358: if (data != NULL && data->pid == getpid()) {
! 359: s = session_find_by_index(data->idx);
! 360: if (s != NULL)
! 361: return (s);
! 362: }
! 363:
! 364: return (cmd_choose_session());
! 365: }
! 366:
! 367: /* Find the most recently used session. */
! 368: struct session *
! 369: cmd_choose_session(void)
! 370: {
! 371: struct session *s, *sbest;
! 372: struct timeval *tv = NULL;
! 373:
! 374: sbest = NULL;
! 375: RB_FOREACH(s, sessions, &sessions) {
! 376: if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
! 377: sbest = s;
! 378: tv = &s->activity_time;
! 379: }
! 380: }
1.1 nicm 381:
1.47 ! nicm 382: return (sbest);
1.5 nicm 383: }
384:
1.31 nicm 385: /* Find the most recently used session from a list. */
1.5 nicm 386: struct session *
1.47 ! nicm 387: cmd_choose_session_list(struct sessionslist *ss)
1.5 nicm 388: {
1.31 nicm 389: struct session *s, *sbest;
1.5 nicm 390: struct timeval *tv = NULL;
391: u_int i;
392:
1.31 nicm 393: sbest = NULL;
1.11 nicm 394: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
395: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 396: continue;
397:
1.31 nicm 398: if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
399: sbest = s;
400: tv = &s->activity_time;
1.1 nicm 401: }
402: }
1.5 nicm 403:
1.31 nicm 404: return (sbest);
1.1 nicm 405: }
406:
1.30 nicm 407: /*
408: * Find the current client. First try the current client if set, then pick the
1.31 nicm 409: * most recently used of the clients attached to the current session if any,
410: * then of all clients.
1.30 nicm 411: */
412: struct client *
413: cmd_current_client(struct cmd_ctx *ctx)
414: {
415: struct session *s;
416: struct client *c;
417: struct clients cc;
418: u_int i;
419:
420: if (ctx->curclient != NULL)
421: return (ctx->curclient);
422:
423: /*
424: * No current client set. Find the current session and return the
425: * newest of its clients.
426: */
427: s = cmd_current_session(ctx);
428: if (s != NULL && !(s->flags & SESSION_UNATTACHED)) {
429: ARRAY_INIT(&cc);
430: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
431: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
432: continue;
433: if (s == c->session)
434: ARRAY_ADD(&cc, c);
435: }
436:
1.31 nicm 437: c = cmd_choose_client(&cc);
1.30 nicm 438: ARRAY_FREE(&cc);
439: if (c != NULL)
440: return (c);
441: }
442:
1.31 nicm 443: return (cmd_choose_client(&clients));
1.30 nicm 444: }
445:
1.31 nicm 446: /* Choose the most recently used client from a list. */
1.20 nicm 447: struct client *
1.31 nicm 448: cmd_choose_client(struct clients *cc)
1.20 nicm 449: {
1.31 nicm 450: struct client *c, *cbest;
1.20 nicm 451: struct timeval *tv = NULL;
452: u_int i;
453:
1.31 nicm 454: cbest = NULL;
1.30 nicm 455: for (i = 0; i < ARRAY_LENGTH(cc); i++) {
456: if ((c = ARRAY_ITEM(cc, i)) == NULL)
1.20 nicm 457: continue;
458: if (c->session == NULL)
459: continue;
460:
1.31 nicm 461: if (tv == NULL || timercmp(&c->activity_time, tv, >)) {
462: cbest = c;
463: tv = &c->activity_time;
1.20 nicm 464: }
465: }
466:
1.31 nicm 467: return (cbest);
1.20 nicm 468: }
469:
1.5 nicm 470: /* Find the target client or report an error and return NULL. */
1.1 nicm 471: struct client *
472: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
473: {
1.30 nicm 474: struct client *c;
1.5 nicm 475: char *tmparg;
476: size_t arglen;
1.1 nicm 477:
1.5 nicm 478: /* A NULL argument means the current client. */
1.30 nicm 479: if (arg == NULL)
480: return (cmd_current_client(ctx));
1.5 nicm 481: tmparg = xstrdup(arg);
482:
483: /* Trim a single trailing colon if any. */
484: arglen = strlen(tmparg);
485: if (arglen != 0 && tmparg[arglen - 1] == ':')
486: tmparg[arglen - 1] = '\0';
487:
488: /* Find the client, if any. */
489: c = cmd_lookup_client(tmparg);
490:
491: /* If no client found, report an error. */
492: if (c == NULL)
493: ctx->error(ctx, "client not found: %s", tmparg);
494:
495: xfree(tmparg);
496: return (c);
497: }
498:
499: /*
500: * Lookup a client by device path. Either of a full match and a match without a
501: * leading _PATH_DEV ("/dev/") is accepted.
502: */
503: struct client *
504: cmd_lookup_client(const char *name)
505: {
506: struct client *c;
507: const char *path;
508: u_int i;
509:
510: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25 nicm 511: c = ARRAY_ITEM(&clients, i);
512: if (c == NULL || c->session == NULL)
1.5 nicm 513: continue;
514: path = c->tty.path;
515:
516: /* Check for exact matches. */
517: if (strcmp(name, path) == 0)
518: return (c);
519:
520: /* Check without leading /dev if present. */
521: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
522: continue;
523: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
524: return (c);
525: }
526:
527: return (NULL);
528: }
529:
530: /* Lookup a session by name. If no session is found, NULL is returned. */
531: struct session *
532: cmd_lookup_session(const char *name, int *ambiguous)
533: {
534: struct session *s, *sfound;
535:
536: *ambiguous = 0;
537:
538: /*
1.28 nicm 539: * Look for matches. First look for exact matches - session names must
540: * be unique so an exact match can't be ambigious and can just be
541: * returned.
1.5 nicm 542: */
1.47 ! nicm 543: if ((s = session_find(name)) != NULL)
! 544: return (s);
1.28 nicm 545:
546: /*
547: * Otherwise look for partial matches, returning early if it is found to
548: * be ambiguous.
549: */
550: sfound = NULL;
1.47 ! nicm 551: RB_FOREACH(s, sessions, &sessions) {
1.5 nicm 552: if (strncmp(name, s->name, strlen(name)) == 0 ||
553: fnmatch(name, s->name, 0) == 0) {
554: if (sfound != NULL) {
555: *ambiguous = 1;
556: return (NULL);
557: }
558: sfound = s;
559: }
560: }
1.35 nicm 561: return (sfound);
1.5 nicm 562: }
563:
564: /*
1.8 nicm 565: * Lookup a window or return -1 if not found or ambigious. First try as an
566: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
1.41 nicm 567: * idx if the window index is a valid number but there is no window with that
1.8 nicm 568: * index.
1.5 nicm 569: */
570: struct winlink *
571: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
572: {
573: struct winlink *wl, *wlfound;
574: const char *errstr;
575: u_int idx;
576:
577: *ambiguous = 0;
578:
579: /* First see if this is a valid window index in this session. */
580: idx = strtonum(name, 0, INT_MAX, &errstr);
581: if (errstr == NULL) {
582: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
583: return (wl);
584: }
1.35 nicm 585:
1.5 nicm 586: /* Look for exact matches, error if more than one. */
587: wlfound = NULL;
588: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 589: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 590: if (wlfound != NULL) {
591: *ambiguous = 1;
592: return (NULL);
593: }
594: wlfound = wl;
1.1 nicm 595: }
596: }
1.5 nicm 597: if (wlfound != NULL)
598: return (wlfound);
599:
600: /* Now look for pattern matches, again error if multiple. */
601: wlfound = NULL;
602: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 603: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
604: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 605: if (wlfound != NULL) {
606: *ambiguous = 1;
607: return (NULL);
608: }
609: wlfound = wl;
610: }
1.35 nicm 611: }
1.5 nicm 612: if (wlfound != NULL)
613: return (wlfound);
614:
615: return (NULL);
1.1 nicm 616: }
617:
1.8 nicm 618: /*
619: * Find a window index - if the window doesn't exist, check if it is a
620: * potential index and return it anyway.
621: */
622: int
623: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
624: {
625: struct winlink *wl;
626: const char *errstr;
627: u_int idx;
628:
629: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
630: return (wl->idx);
631: if (*ambiguous)
632: return (-1);
633:
634: idx = strtonum(name, 0, INT_MAX, &errstr);
635: if (errstr == NULL)
636: return (idx);
637:
638: return (-1);
639: }
640:
1.5 nicm 641: /* Find the target session or report an error and return NULL. */
1.1 nicm 642: struct session *
643: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
644: {
645: struct session *s;
1.5 nicm 646: struct client *c;
647: char *tmparg;
648: size_t arglen;
649: int ambiguous;
1.1 nicm 650:
1.5 nicm 651: /* A NULL argument means the current session. */
1.1 nicm 652: if (arg == NULL)
1.5 nicm 653: return (cmd_current_session(ctx));
654: tmparg = xstrdup(arg);
655:
656: /* Trim a single trailing colon if any. */
657: arglen = strlen(tmparg);
658: if (arglen != 0 && tmparg[arglen - 1] == ':')
659: tmparg[arglen - 1] = '\0';
660:
661: /* Find the session, if any. */
662: s = cmd_lookup_session(tmparg, &ambiguous);
663:
664: /* If it doesn't, try to match it as a client. */
665: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
666: s = c->session;
667:
668: /* If no session found, report an error. */
669: if (s == NULL) {
670: if (ambiguous)
671: ctx->error(ctx, "more than one session: %s", tmparg);
672: else
673: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 674: }
1.5 nicm 675:
676: xfree(tmparg);
1.1 nicm 677: return (s);
678: }
679:
1.5 nicm 680: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 681: struct winlink *
682: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
683: {
684: struct session *s;
685: struct winlink *wl;
1.5 nicm 686: const char *winptr;
687: char *sessptr = NULL;
688: int ambiguous = 0;
689:
690: /*
691: * Find the current session. There must always be a current session, if
692: * it can't be found, report an error.
693: */
694: if ((s = cmd_current_session(ctx)) == NULL) {
695: ctx->error(ctx, "can't establish current session");
696: return (NULL);
697: }
698:
699: /* A NULL argument means the current session and window. */
700: if (arg == NULL) {
701: if (sp != NULL)
702: *sp = s;
703: return (s->curw);
704: }
705:
706: /* Time to look at the argument. If it is empty, that is an error. */
707: if (*arg == '\0')
708: goto not_found;
709:
1.8 nicm 710: /* Find the separating colon and split into window and session. */
1.5 nicm 711: winptr = strchr(arg, ':');
712: if (winptr == NULL)
1.8 nicm 713: goto no_colon;
714: winptr++; /* skip : */
715: sessptr = xstrdup(arg);
716: *strchr(sessptr, ':') = '\0';
1.5 nicm 717:
718: /* Try to lookup the session if present. */
1.8 nicm 719: if (*sessptr != '\0') {
720: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 721: goto no_session;
722: }
723: if (sp != NULL)
724: *sp = s;
725:
726: /*
727: * Then work out the window. An empty string is the current window,
1.38 nicm 728: * otherwise try special cases then to look it up in the session.
1.5 nicm 729: */
1.8 nicm 730: if (*winptr == '\0')
1.5 nicm 731: wl = s->curw;
1.38 nicm 732: else if (winptr[0] == '!' && winptr[1] == '\0')
733: wl = TAILQ_FIRST(&s->lastw);
1.43 nicm 734: else if (winptr[0] == '+' || winptr[0] == '-')
735: wl = cmd_find_window_offset(winptr, s, &ambiguous);
736: else
1.38 nicm 737: wl = cmd_lookup_window(s, winptr, &ambiguous);
738: if (wl == NULL)
1.5 nicm 739: goto not_found;
1.35 nicm 740:
1.5 nicm 741: if (sessptr != NULL)
742: xfree(sessptr);
743: return (wl);
744:
1.8 nicm 745: no_colon:
1.38 nicm 746: /*
747: * No colon in the string, first try special cases, then as a window
748: * and lastly as a session.
749: */
750: if (arg[0] == '!' && arg[1] == '\0') {
751: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
752: goto not_found;
1.41 nicm 753: } else if (arg[0] == '+' || arg[0] == '-') {
1.43 nicm 754: if ((wl = cmd_find_window_offset(arg, s, &ambiguous)) == NULL)
1.41 nicm 755: goto lookup_session;
756: } else if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL)
757: goto lookup_session;
1.8 nicm 758:
759: if (sp != NULL)
760: *sp = s;
761:
762: return (wl);
763:
1.41 nicm 764: lookup_session:
765: if (ambiguous)
766: goto not_found;
767: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
768: goto no_session;
769:
770: if (sp != NULL)
771: *sp = s;
772:
773: return (s->curw);
774:
1.5 nicm 775: no_session:
776: if (ambiguous)
1.8 nicm 777: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 778: else
1.8 nicm 779: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 780: if (sessptr != NULL)
781: xfree(sessptr);
782: return (NULL);
783:
784: not_found:
785: if (ambiguous)
786: ctx->error(ctx, "multiple windows: %s", arg);
787: else
788: ctx->error(ctx, "window not found: %s", arg);
789: if (sessptr != NULL)
790: xfree(sessptr);
791: return (NULL);
792: }
1.1 nicm 793:
1.43 nicm 794: struct winlink *
795: cmd_find_window_offset(const char *winptr, struct session *s, int *ambiguous)
796: {
797: struct winlink *wl;
798: int offset = 1;
799:
800: if (winptr[1] != '\0')
801: offset = strtonum(winptr + 1, 1, INT_MAX, NULL);
802: if (offset == 0)
803: wl = cmd_lookup_window(s, winptr, ambiguous);
804: else {
805: if (winptr[0] == '+')
806: wl = winlink_next_by_number(s->curw, s, offset);
807: else
808: wl = winlink_previous_by_number(s->curw, s, offset);
809: }
810:
811: return (wl);
812: }
813:
1.5 nicm 814: /*
815: * Find the target session and window index, whether or not it exists in the
816: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 817: * used when parsing an argument for a window target that may not exist (for
818: * example if it is going to be created).
1.5 nicm 819: */
820: int
821: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
822: {
823: struct session *s;
1.38 nicm 824: struct winlink *wl;
1.8 nicm 825: const char *winptr;
1.5 nicm 826: char *sessptr = NULL;
827: int idx, ambiguous = 0;
828:
829: /*
830: * Find the current session. There must always be a current session, if
831: * it can't be found, report an error.
832: */
833: if ((s = cmd_current_session(ctx)) == NULL) {
834: ctx->error(ctx, "can't establish current session");
1.9 nicm 835: return (-2);
1.1 nicm 836: }
1.5 nicm 837:
838: /* A NULL argument means the current session and "no window" (-1). */
839: if (arg == NULL) {
840: if (sp != NULL)
841: *sp = s;
842: return (-1);
843: }
844:
845: /* Time to look at the argument. If it is empty, that is an error. */
846: if (*arg == '\0')
847: goto not_found;
848:
849: /* Find the separating colon. If none, assume the current session. */
850: winptr = strchr(arg, ':');
851: if (winptr == NULL)
1.8 nicm 852: goto no_colon;
853: winptr++; /* skip : */
854: sessptr = xstrdup(arg);
855: *strchr(sessptr, ':') = '\0';
1.5 nicm 856:
857: /* Try to lookup the session if present. */
858: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 859: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 860: goto no_session;
861: }
1.1 nicm 862: if (sp != NULL)
863: *sp = s;
864:
1.5 nicm 865: /*
1.8 nicm 866: * Then work out the window. An empty string is a new window otherwise
867: * try to look it up in the session.
1.5 nicm 868: */
1.8 nicm 869: if (*winptr == '\0')
1.38 nicm 870: idx = -1;
871: else if (winptr[0] == '!' && winptr[1] == '\0') {
872: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
873: goto not_found;
874: idx = wl->idx;
1.41 nicm 875: } else if (winptr[0] == '+' || winptr[0] == '-') {
1.43 nicm 876: if ((idx = cmd_find_index_offset(winptr, s, &ambiguous)) < 0)
1.41 nicm 877: goto invalid_index;
878: } else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1)
879: goto invalid_index;
1.35 nicm 880:
1.5 nicm 881: if (sessptr != NULL)
882: xfree(sessptr);
883: return (idx);
884:
1.8 nicm 885: no_colon:
1.38 nicm 886: /*
887: * No colon in the string, first try special cases, then as a window
888: * and lastly as a session.
889: */
890: if (arg[0] == '!' && arg[1] == '\0') {
891: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
892: goto not_found;
893: idx = wl->idx;
1.41 nicm 894: } else if (arg[0] == '+' || arg[0] == '-') {
1.43 nicm 895: if ((idx = cmd_find_index_offset(arg, s, &ambiguous)) < 0)
1.41 nicm 896: goto lookup_session;
897: } else if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1)
898: goto lookup_session;
1.8 nicm 899:
900: if (sp != NULL)
901: *sp = s;
902:
903: return (idx);
904:
1.41 nicm 905: lookup_session:
906: if (ambiguous)
907: goto not_found;
908: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
909: goto no_session;
910:
911: if (sp != NULL)
912: *sp = s;
913:
914: return (-1);
915:
1.5 nicm 916: no_session:
917: if (ambiguous)
1.35 nicm 918: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 919: else
1.8 nicm 920: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 921: if (sessptr != NULL)
922: xfree(sessptr);
923: return (-2);
924:
1.41 nicm 925: invalid_index:
926: if (ambiguous)
927: goto not_found;
928: ctx->error(ctx, "invalid index: %s", arg);
929:
930: if (sessptr != NULL)
931: xfree(sessptr);
932: return (-2);
933:
1.5 nicm 934: not_found:
935: if (ambiguous)
936: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 937: else
1.5 nicm 938: ctx->error(ctx, "window not found: %s", arg);
939: if (sessptr != NULL)
940: xfree(sessptr);
941: return (-2);
1.12 nicm 942: }
943:
1.43 nicm 944: int
945: cmd_find_index_offset(const char *winptr, struct session *s, int *ambiguous)
946: {
947: int idx, offset = 1;
948:
949: if (winptr[1] != '\0')
950: offset = strtonum(winptr + 1, 1, INT_MAX, NULL);
951: if (offset == 0)
952: idx = cmd_lookup_index(s, winptr, ambiguous);
953: else {
954: if (winptr[0] == '+') {
955: if (s->curw->idx == INT_MAX)
956: idx = cmd_lookup_index(s, winptr, ambiguous);
957: else
958: idx = s->curw->idx + offset;
959: } else {
960: if (s->curw->idx == 0)
961: idx = cmd_lookup_index(s, winptr, ambiguous);
962: else
963: idx = s->curw->idx - offset;
964: }
965: }
966:
967: return (idx);
968: }
969:
1.12 nicm 970: /*
971: * Find the target session, window and pane number or report an error and
972: * return NULL. The pane number is separated from the session:window by a .,
973: * such as mysession:mywindow.0.
974: */
975: struct winlink *
976: cmd_find_pane(struct cmd_ctx *ctx,
977: const char *arg, struct session **sp, struct window_pane **wpp)
978: {
1.36 nicm 979: struct session *s;
980: struct winlink *wl;
981: struct layout_cell *lc;
982: const char *period, *errstr;
983: char *winptr, *paneptr;
1.43 nicm 984: u_int idx;
1.12 nicm 985:
986: /* Get the current session. */
987: if ((s = cmd_current_session(ctx)) == NULL) {
1.27 deraadt 988: ctx->error(ctx, "can't establish current session");
1.12 nicm 989: return (NULL);
990: }
991: if (sp != NULL)
992: *sp = s;
993:
994: /* A NULL argument means the current session, window and pane. */
995: if (arg == NULL) {
996: *wpp = s->curw->window->active;
997: return (s->curw);
998: }
999:
1000: /* Look for a separating period. */
1001: if ((period = strrchr(arg, '.')) == NULL)
1002: goto no_period;
1003:
1004: /* Pull out the window part and parse it. */
1005: winptr = xstrdup(arg);
1006: winptr[period - arg] = '\0';
1007: if (*winptr == '\0')
1008: wl = s->curw;
1009: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
1010: goto error;
1011:
1012: /* Find the pane section and look it up. */
1013: paneptr = winptr + (period - arg) + 1;
1014: if (*paneptr == '\0')
1015: *wpp = wl->window->active;
1.43 nicm 1016: else if (paneptr[0] == '+' || paneptr[0] == '-')
1017: *wpp = cmd_find_pane_offset(paneptr, wl);
1018: else {
1.12 nicm 1019: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
1.36 nicm 1020: if (errstr != NULL)
1021: goto lookup_string;
1.12 nicm 1022: *wpp = window_pane_at_index(wl->window, idx);
1.36 nicm 1023: if (*wpp == NULL)
1024: goto lookup_string;
1.12 nicm 1025: }
1026:
1027: xfree(winptr);
1028: return (wl);
1029:
1.36 nicm 1030: lookup_string:
1031: /* Try pane string description. */
1.39 nicm 1032: if ((lc = layout_find_string(wl->window, paneptr)) == NULL) {
1.36 nicm 1033: ctx->error(ctx, "can't find pane: %s", paneptr);
1034: goto error;
1035: }
1036: *wpp = lc->wp;
1037:
1038: xfree(winptr);
1.39 nicm 1039: return (wl);
1.36 nicm 1040:
1.12 nicm 1041: no_period:
1042: /* Try as a pane number alone. */
1043: idx = strtonum(arg, 0, INT_MAX, &errstr);
1044: if (errstr != NULL)
1045: goto lookup_window;
1046:
1047: /* Try index in the current session and window. */
1048: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
1049: goto lookup_window;
1.35 nicm 1050:
1.12 nicm 1051: return (s->curw);
1052:
1053: lookup_window:
1.36 nicm 1054: /* Try pane string description. */
1055: if ((lc = layout_find_string(s->curw->window, arg)) != NULL) {
1056: *wpp = lc->wp;
1057: return (s->curw);
1058: }
1059:
1.12 nicm 1060: /* Try as a window and use the active pane. */
1061: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
1062: *wpp = wl->window->active;
1063: return (wl);
1.35 nicm 1064:
1.12 nicm 1065: error:
1066: xfree(winptr);
1067: return (NULL);
1.43 nicm 1068: }
1069:
1070: struct window_pane *
1071: cmd_find_pane_offset(const char *paneptr, struct winlink *wl)
1072: {
1073: struct window *w = wl->window;
1074: struct window_pane *wp = w->active;
1075: u_int offset = 1;
1076:
1077: if (paneptr[1] != '\0')
1078: offset = strtonum(paneptr + 1, 1, INT_MAX, NULL);
1079: if (offset > 0) {
1080: if (paneptr[0] == '+')
1081: wp = window_pane_next_by_number(w, wp, offset);
1082: else
1083: wp = window_pane_previous_by_number(w, wp, offset);
1084: }
1085:
1086: return (wp);
1.15 nicm 1087: }
1088:
1089: /* Replace the first %% or %idx in template by s. */
1090: char *
1091: cmd_template_replace(char *template, const char *s, int idx)
1092: {
1093: char ch;
1094: char *buf, *ptr;
1095: int replaced;
1096: size_t len;
1097:
1098: if (strstr(template, "%") == NULL)
1099: return (xstrdup(template));
1100:
1101: buf = xmalloc(1);
1102: *buf = '\0';
1103: len = 0;
1104: replaced = 0;
1105:
1106: ptr = template;
1107: while (*ptr != '\0') {
1108: switch (ch = *ptr++) {
1109: case '%':
1110: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
1111: if (*ptr != '%' || replaced)
1112: break;
1113: replaced = 1;
1114: }
1115: ptr++;
1116:
1117: len += strlen(s);
1118: buf = xrealloc(buf, 1, len + 1);
1119: strlcat(buf, s, len + 1);
1120: continue;
1121: }
1122: buf = xrealloc(buf, 1, len + 2);
1123: buf[len++] = ch;
1124: buf[len] = '\0';
1125: }
1126:
1127: return (buf);
1.1 nicm 1128: }
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