Annotation of src/usr.bin/tmux/cmd.c, Revision 1.35
1.35 ! nicm 1: /* $OpenBSD: cmd.c,v 1.34 2009/12/01 18:42:38 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,
1.15 nicm 35: &cmd_choose_client_entry,
1.1 nicm 36: &cmd_choose_session_entry,
37: &cmd_choose_window_entry,
38: &cmd_clear_history_entry,
39: &cmd_clock_mode_entry,
40: &cmd_command_prompt_entry,
41: &cmd_confirm_before_entry,
42: &cmd_copy_buffer_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_down_pane_entry,
49: &cmd_find_window_entry,
50: &cmd_has_session_entry,
1.4 nicm 51: &cmd_if_shell_entry,
1.1 nicm 52: &cmd_kill_pane_entry,
53: &cmd_kill_server_entry,
54: &cmd_kill_session_entry,
55: &cmd_kill_window_entry,
56: &cmd_last_window_entry,
57: &cmd_link_window_entry,
58: &cmd_list_buffers_entry,
59: &cmd_list_clients_entry,
60: &cmd_list_commands_entry,
61: &cmd_list_keys_entry,
1.23 nicm 62: &cmd_list_panes_entry,
1.1 nicm 63: &cmd_list_sessions_entry,
64: &cmd_list_windows_entry,
65: &cmd_load_buffer_entry,
1.19 nicm 66: &cmd_lock_client_entry,
1.1 nicm 67: &cmd_lock_server_entry,
1.19 nicm 68: &cmd_lock_session_entry,
1.1 nicm 69: &cmd_move_window_entry,
70: &cmd_new_session_entry,
71: &cmd_new_window_entry,
72: &cmd_next_layout_entry,
73: &cmd_next_window_entry,
74: &cmd_paste_buffer_entry,
1.24 nicm 75: &cmd_pipe_pane_entry,
1.1 nicm 76: &cmd_previous_layout_entry,
77: &cmd_previous_window_entry,
78: &cmd_refresh_client_entry,
79: &cmd_rename_session_entry,
80: &cmd_rename_window_entry,
81: &cmd_resize_pane_entry,
82: &cmd_respawn_window_entry,
83: &cmd_rotate_window_entry,
1.17 nicm 84: &cmd_run_shell_entry,
1.1 nicm 85: &cmd_save_buffer_entry,
86: &cmd_select_layout_entry,
87: &cmd_select_pane_entry,
88: &cmd_select_prompt_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: &cmd_up_pane_entry,
112: NULL
113: };
114:
1.31 nicm 115: struct session *cmd_choose_session(struct sessions *);
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 *);
1.5 nicm 121:
1.10 nicm 122: int
123: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
124: {
125: size_t arglen;
126: int i;
127:
128: *buf = '\0';
129: for (i = 0; i < argc; i++) {
130: if (strlcpy(buf, argv[i], len) >= len)
131: return (-1);
132: arglen = strlen(argv[i]) + 1;
133: buf += arglen;
134: len -= arglen;
135: }
136:
137: return (0);
138: }
139:
140: int
141: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
142: {
143: int i;
144: size_t arglen;
145:
146: if (argc == 0)
147: return (0);
148: *argv = xcalloc(argc, sizeof **argv);
149:
150: buf[len - 1] = '\0';
151: for (i = 0; i < argc; i++) {
152: if (len == 0) {
153: cmd_free_argv(argc, *argv);
154: return (-1);
155: }
156:
157: arglen = strlen(buf) + 1;
158: (*argv)[i] = xstrdup(buf);
159: buf += arglen;
160: len -= arglen;
161: }
162:
163: return (0);
164: }
165:
166: void
167: cmd_free_argv(int argc, char **argv)
168: {
169: int i;
170:
171: if (argc == 0)
1.35 ! nicm 172: return;
1.10 nicm 173: for (i = 0; i < argc; i++) {
174: if (argv[i] != NULL)
175: xfree(argv[i]);
176: }
177: xfree(argv);
178: }
179:
1.1 nicm 180: struct cmd *
181: cmd_parse(int argc, char **argv, char **cause)
182: {
183: const struct cmd_entry **entryp, *entry;
1.27 deraadt 184: struct cmd *cmd;
1.1 nicm 185: char s[BUFSIZ];
1.3 nicm 186: int opt, ambiguous = 0;
1.1 nicm 187:
188: *cause = NULL;
1.2 nicm 189: if (argc == 0) {
190: xasprintf(cause, "no command");
1.1 nicm 191: return (NULL);
1.2 nicm 192: }
1.1 nicm 193:
194: entry = NULL;
195: for (entryp = cmd_table; *entryp != NULL; entryp++) {
196: if ((*entryp)->alias != NULL &&
197: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 198: ambiguous = 0;
1.1 nicm 199: entry = *entryp;
200: break;
201: }
202:
203: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
204: continue;
205: if (entry != NULL)
1.3 nicm 206: ambiguous = 1;
1.1 nicm 207: entry = *entryp;
208:
209: /* Bail now if an exact match. */
210: if (strcmp(entry->name, argv[0]) == 0)
211: break;
212: }
1.3 nicm 213: if (ambiguous)
214: goto ambiguous;
1.1 nicm 215: if (entry == NULL) {
216: xasprintf(cause, "unknown command: %s", argv[0]);
217: return (NULL);
218: }
219:
220: optreset = 1;
221: optind = 1;
222: if (entry->parse == NULL) {
223: while ((opt = getopt(argc, argv, "")) != -1) {
224: switch (opt) {
225: default:
226: goto usage;
227: }
228: }
229: argc -= optind;
230: argv += optind;
231: if (argc != 0)
232: goto usage;
233: }
234:
235: cmd = xmalloc(sizeof *cmd);
236: cmd->entry = entry;
237: cmd->data = NULL;
238: if (entry->parse != NULL) {
239: if (entry->parse(cmd, argc, argv, cause) != 0) {
240: xfree(cmd);
241: return (NULL);
242: }
243: }
244: return (cmd);
245:
246: ambiguous:
247: *s = '\0';
248: for (entryp = cmd_table; *entryp != NULL; entryp++) {
249: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
250: continue;
251: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
252: break;
253: if (strlcat(s, ", ", sizeof s) >= sizeof s)
254: break;
255: }
256: s[strlen(s) - 2] = '\0';
257: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
258: return (NULL);
259:
260: usage:
261: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
262: return (NULL);
263: }
264:
265: int
266: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
267: {
268: return (cmd->entry->exec(cmd, ctx));
269: }
270:
271: void
272: cmd_free(struct cmd *cmd)
273: {
274: if (cmd->data != NULL && cmd->entry->free != NULL)
275: cmd->entry->free(cmd);
276: xfree(cmd);
277: }
278:
279: size_t
280: cmd_print(struct cmd *cmd, char *buf, size_t len)
281: {
1.33 nicm 282: if (cmd->entry->print == NULL)
1.1 nicm 283: return (xsnprintf(buf, len, "%s", cmd->entry->name));
284: return (cmd->entry->print(cmd, buf, len));
285: }
286:
1.5 nicm 287: /*
288: * Figure out the current session. Use: 1) the current session, if the command
1.31 nicm 289: * context has one; 2) the most recently used session containing the pty of the
290: * calling client, if any; 3) the session specified in the TMUX variable from
291: * the environment (as passed from the client); 4) the most recently used
292: * session from all sessions.
1.5 nicm 293: */
1.1 nicm 294: struct session *
295: cmd_current_session(struct cmd_ctx *ctx)
296: {
297: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 298: struct client *c = ctx->cmdclient;
1.5 nicm 299: struct session *s;
1.11 nicm 300: struct sessions ss;
301: struct winlink *wl;
302: struct window_pane *wp;
303: u_int i;
304: int found;
1.1 nicm 305:
1.14 nicm 306: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
307: return (ctx->curclient->session);
1.1 nicm 308:
1.11 nicm 309: /*
310: * If the name of the calling client's pty is know, build a list of the
311: * sessions that contain it and if any choose either the first or the
312: * newest.
313: */
314: if (c != NULL && c->tty.path != NULL) {
315: ARRAY_INIT(&ss);
316: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
317: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
318: continue;
319: found = 0;
320: RB_FOREACH(wl, winlinks, &s->windows) {
321: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
322: if (strcmp(wp->tty, c->tty.path) == 0) {
323: found = 1;
324: break;
325: }
326: }
327: if (found)
328: break;
329: }
330: if (found)
331: ARRAY_ADD(&ss, s);
332: }
333:
1.31 nicm 334: s = cmd_choose_session(&ss);
1.11 nicm 335: ARRAY_FREE(&ss);
336: if (s != NULL)
337: return (s);
338: }
339:
340: /* Use the session from the TMUX environment variable. */
1.1 nicm 341: if (data != NULL && data->pid != -1) {
1.5 nicm 342: if (data->pid != getpid())
1.1 nicm 343: return (NULL);
1.5 nicm 344: if (data->idx > ARRAY_LENGTH(&sessions))
1.1 nicm 345: return (NULL);
1.5 nicm 346: if ((s = ARRAY_ITEM(&sessions, data->idx)) == NULL)
1.1 nicm 347: return (NULL);
348: return (s);
349: }
350:
1.31 nicm 351: return (cmd_choose_session(&sessions));
1.5 nicm 352: }
353:
1.31 nicm 354: /* Find the most recently used session from a list. */
1.5 nicm 355: struct session *
1.31 nicm 356: cmd_choose_session(struct sessions *ss)
1.5 nicm 357: {
1.31 nicm 358: struct session *s, *sbest;
1.5 nicm 359: struct timeval *tv = NULL;
360: u_int i;
361:
1.31 nicm 362: sbest = NULL;
1.11 nicm 363: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
364: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 365: continue;
366:
1.31 nicm 367: if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
368: sbest = s;
369: tv = &s->activity_time;
1.1 nicm 370: }
371: }
1.5 nicm 372:
1.31 nicm 373: return (sbest);
1.1 nicm 374: }
375:
1.30 nicm 376: /*
377: * Find the current client. First try the current client if set, then pick the
1.31 nicm 378: * most recently used of the clients attached to the current session if any,
379: * then of all clients.
1.30 nicm 380: */
381: struct client *
382: cmd_current_client(struct cmd_ctx *ctx)
383: {
384: struct session *s;
385: struct client *c;
386: struct clients cc;
387: u_int i;
388:
389: if (ctx->curclient != NULL)
390: return (ctx->curclient);
391:
392: /*
393: * No current client set. Find the current session and return the
394: * newest of its clients.
395: */
396: s = cmd_current_session(ctx);
397: if (s != NULL && !(s->flags & SESSION_UNATTACHED)) {
398: ARRAY_INIT(&cc);
399: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
400: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
401: continue;
402: if (s == c->session)
403: ARRAY_ADD(&cc, c);
404: }
405:
1.31 nicm 406: c = cmd_choose_client(&cc);
1.30 nicm 407: ARRAY_FREE(&cc);
408: if (c != NULL)
409: return (c);
410: }
411:
1.31 nicm 412: return (cmd_choose_client(&clients));
1.30 nicm 413: }
414:
1.31 nicm 415: /* Choose the most recently used client from a list. */
1.20 nicm 416: struct client *
1.31 nicm 417: cmd_choose_client(struct clients *cc)
1.20 nicm 418: {
1.31 nicm 419: struct client *c, *cbest;
1.20 nicm 420: struct timeval *tv = NULL;
421: u_int i;
422:
1.31 nicm 423: cbest = NULL;
1.30 nicm 424: for (i = 0; i < ARRAY_LENGTH(cc); i++) {
425: if ((c = ARRAY_ITEM(cc, i)) == NULL)
1.20 nicm 426: continue;
427: if (c->session == NULL)
428: continue;
429:
1.31 nicm 430: if (tv == NULL || timercmp(&c->activity_time, tv, >)) {
431: cbest = c;
432: tv = &c->activity_time;
1.20 nicm 433: }
434: }
435:
1.31 nicm 436: return (cbest);
1.20 nicm 437: }
438:
1.5 nicm 439: /* Find the target client or report an error and return NULL. */
1.1 nicm 440: struct client *
441: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
442: {
1.30 nicm 443: struct client *c;
1.5 nicm 444: char *tmparg;
445: size_t arglen;
1.1 nicm 446:
1.5 nicm 447: /* A NULL argument means the current client. */
1.30 nicm 448: if (arg == NULL)
449: return (cmd_current_client(ctx));
1.5 nicm 450: tmparg = xstrdup(arg);
451:
452: /* Trim a single trailing colon if any. */
453: arglen = strlen(tmparg);
454: if (arglen != 0 && tmparg[arglen - 1] == ':')
455: tmparg[arglen - 1] = '\0';
456:
457: /* Find the client, if any. */
458: c = cmd_lookup_client(tmparg);
459:
460: /* If no client found, report an error. */
461: if (c == NULL)
462: ctx->error(ctx, "client not found: %s", tmparg);
463:
464: xfree(tmparg);
465: return (c);
466: }
467:
468: /*
469: * Lookup a client by device path. Either of a full match and a match without a
470: * leading _PATH_DEV ("/dev/") is accepted.
471: */
472: struct client *
473: cmd_lookup_client(const char *name)
474: {
475: struct client *c;
476: const char *path;
477: u_int i;
478:
479: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25 nicm 480: c = ARRAY_ITEM(&clients, i);
481: if (c == NULL || c->session == NULL)
1.5 nicm 482: continue;
483: path = c->tty.path;
484:
485: /* Check for exact matches. */
486: if (strcmp(name, path) == 0)
487: return (c);
488:
489: /* Check without leading /dev if present. */
490: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
491: continue;
492: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
493: return (c);
494: }
495:
496: return (NULL);
497: }
498:
499: /* Lookup a session by name. If no session is found, NULL is returned. */
500: struct session *
501: cmd_lookup_session(const char *name, int *ambiguous)
502: {
503: struct session *s, *sfound;
504: u_int i;
505:
506: *ambiguous = 0;
507:
508: /*
1.28 nicm 509: * Look for matches. First look for exact matches - session names must
510: * be unique so an exact match can't be ambigious and can just be
511: * returned.
1.5 nicm 512: */
1.35 ! nicm 513: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
1.5 nicm 514: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
515: continue;
516: if (strcmp(name, s->name) == 0)
517: return (s);
1.28 nicm 518: }
519:
520: /*
521: * Otherwise look for partial matches, returning early if it is found to
522: * be ambiguous.
523: */
524: sfound = NULL;
1.35 ! nicm 525: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
1.28 nicm 526: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
527: continue;
1.5 nicm 528: if (strncmp(name, s->name, strlen(name)) == 0 ||
529: fnmatch(name, s->name, 0) == 0) {
530: if (sfound != NULL) {
531: *ambiguous = 1;
532: return (NULL);
533: }
534: sfound = s;
535: }
536: }
1.35 ! nicm 537: return (sfound);
1.5 nicm 538: }
539:
540: /*
1.8 nicm 541: * Lookup a window or return -1 if not found or ambigious. First try as an
542: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
543: * idx if the window index is a valid number but there is now window with that
544: * index.
1.5 nicm 545: */
546: struct winlink *
547: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
548: {
549: struct winlink *wl, *wlfound;
550: const char *errstr;
551: u_int idx;
552:
553: *ambiguous = 0;
554:
555: /* First see if this is a valid window index in this session. */
556: idx = strtonum(name, 0, INT_MAX, &errstr);
557: if (errstr == NULL) {
558: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
559: return (wl);
560: }
1.35 ! nicm 561:
1.5 nicm 562: /* Look for exact matches, error if more than one. */
563: wlfound = NULL;
564: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 565: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 566: if (wlfound != NULL) {
567: *ambiguous = 1;
568: return (NULL);
569: }
570: wlfound = wl;
1.1 nicm 571: }
572: }
1.5 nicm 573: if (wlfound != NULL)
574: return (wlfound);
575:
576: /* Now look for pattern matches, again error if multiple. */
577: wlfound = NULL;
578: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 579: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
580: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 581: if (wlfound != NULL) {
582: *ambiguous = 1;
583: return (NULL);
584: }
585: wlfound = wl;
586: }
1.35 ! nicm 587: }
1.5 nicm 588: if (wlfound != NULL)
589: return (wlfound);
590:
591: return (NULL);
1.1 nicm 592: }
593:
1.8 nicm 594: /*
595: * Find a window index - if the window doesn't exist, check if it is a
596: * potential index and return it anyway.
597: */
598: int
599: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
600: {
601: struct winlink *wl;
602: const char *errstr;
603: u_int idx;
604:
605: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
606: return (wl->idx);
607: if (*ambiguous)
608: return (-1);
609:
610: idx = strtonum(name, 0, INT_MAX, &errstr);
611: if (errstr == NULL)
612: return (idx);
613:
614: return (-1);
615: }
616:
1.5 nicm 617: /* Find the target session or report an error and return NULL. */
1.1 nicm 618: struct session *
619: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
620: {
621: struct session *s;
1.5 nicm 622: struct client *c;
623: char *tmparg;
624: size_t arglen;
625: int ambiguous;
1.1 nicm 626:
1.5 nicm 627: /* A NULL argument means the current session. */
1.1 nicm 628: if (arg == NULL)
1.5 nicm 629: return (cmd_current_session(ctx));
630: tmparg = xstrdup(arg);
631:
632: /* Trim a single trailing colon if any. */
633: arglen = strlen(tmparg);
634: if (arglen != 0 && tmparg[arglen - 1] == ':')
635: tmparg[arglen - 1] = '\0';
636:
637: /* Find the session, if any. */
638: s = cmd_lookup_session(tmparg, &ambiguous);
639:
640: /* If it doesn't, try to match it as a client. */
641: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
642: s = c->session;
643:
644: /* If no session found, report an error. */
645: if (s == NULL) {
646: if (ambiguous)
647: ctx->error(ctx, "more than one session: %s", tmparg);
648: else
649: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 650: }
1.5 nicm 651:
652: xfree(tmparg);
1.1 nicm 653: return (s);
654: }
655:
1.5 nicm 656: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 657: struct winlink *
658: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
659: {
660: struct session *s;
661: struct winlink *wl;
1.5 nicm 662: const char *winptr;
663: char *sessptr = NULL;
664: int ambiguous = 0;
665:
666: /*
667: * Find the current session. There must always be a current session, if
668: * it can't be found, report an error.
669: */
670: if ((s = cmd_current_session(ctx)) == NULL) {
671: ctx->error(ctx, "can't establish current session");
672: return (NULL);
673: }
674:
675: /* A NULL argument means the current session and window. */
676: if (arg == NULL) {
677: if (sp != NULL)
678: *sp = s;
679: return (s->curw);
680: }
681:
682: /* Time to look at the argument. If it is empty, that is an error. */
683: if (*arg == '\0')
684: goto not_found;
685:
1.8 nicm 686: /* Find the separating colon and split into window and session. */
1.5 nicm 687: winptr = strchr(arg, ':');
688: if (winptr == NULL)
1.8 nicm 689: goto no_colon;
690: winptr++; /* skip : */
691: sessptr = xstrdup(arg);
692: *strchr(sessptr, ':') = '\0';
1.5 nicm 693:
694: /* Try to lookup the session if present. */
1.8 nicm 695: if (*sessptr != '\0') {
696: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 697: goto no_session;
698: }
699: if (sp != NULL)
700: *sp = s;
701:
702: /*
703: * Then work out the window. An empty string is the current window,
704: * otherwise try to look it up in the session.
705: */
1.8 nicm 706: if (*winptr == '\0')
1.5 nicm 707: wl = s->curw;
708: else if ((wl = cmd_lookup_window(s, winptr, &ambiguous)) == NULL)
709: goto not_found;
1.35 ! nicm 710:
1.5 nicm 711: if (sessptr != NULL)
712: xfree(sessptr);
713: return (wl);
714:
1.8 nicm 715: no_colon:
716: /* No colon in the string, first try as a window then as a session. */
717: if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) {
718: if (ambiguous)
719: goto not_found;
720: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
721: goto no_session;
722: wl = s->curw;
723: }
724:
725: if (sp != NULL)
726: *sp = s;
727:
728: return (wl);
729:
1.5 nicm 730: no_session:
731: if (ambiguous)
1.8 nicm 732: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 733: else
1.8 nicm 734: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 735: if (sessptr != NULL)
736: xfree(sessptr);
737: return (NULL);
738:
739: not_found:
740: if (ambiguous)
741: ctx->error(ctx, "multiple windows: %s", arg);
742: else
743: ctx->error(ctx, "window not found: %s", arg);
744: if (sessptr != NULL)
745: xfree(sessptr);
746: return (NULL);
747: }
1.1 nicm 748:
1.5 nicm 749: /*
750: * Find the target session and window index, whether or not it exists in the
751: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 752: * used when parsing an argument for a window target that may not exist (for
753: * example if it is going to be created).
1.5 nicm 754: */
755: int
756: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
757: {
758: struct session *s;
1.8 nicm 759: const char *winptr;
1.5 nicm 760: char *sessptr = NULL;
761: int idx, ambiguous = 0;
762:
763: /*
764: * Find the current session. There must always be a current session, if
765: * it can't be found, report an error.
766: */
767: if ((s = cmd_current_session(ctx)) == NULL) {
768: ctx->error(ctx, "can't establish current session");
1.9 nicm 769: return (-2);
1.1 nicm 770: }
1.5 nicm 771:
772: /* A NULL argument means the current session and "no window" (-1). */
773: if (arg == NULL) {
774: if (sp != NULL)
775: *sp = s;
776: return (-1);
777: }
778:
779: /* Time to look at the argument. If it is empty, that is an error. */
780: if (*arg == '\0')
781: goto not_found;
782:
783: /* Find the separating colon. If none, assume the current session. */
784: winptr = strchr(arg, ':');
785: if (winptr == NULL)
1.8 nicm 786: goto no_colon;
787: winptr++; /* skip : */
788: sessptr = xstrdup(arg);
789: *strchr(sessptr, ':') = '\0';
1.5 nicm 790:
791: /* Try to lookup the session if present. */
792: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 793: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 794: goto no_session;
795: }
1.1 nicm 796: if (sp != NULL)
797: *sp = s;
798:
1.5 nicm 799: /*
1.8 nicm 800: * Then work out the window. An empty string is a new window otherwise
801: * try to look it up in the session.
1.5 nicm 802: */
1.8 nicm 803: if (*winptr == '\0')
804: idx = -1;
805: else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) {
1.5 nicm 806: if (ambiguous)
807: goto not_found;
1.8 nicm 808: ctx->error(ctx, "invalid index: %s", arg);
809: idx = -2;
810: }
1.35 ! nicm 811:
1.5 nicm 812: if (sessptr != NULL)
813: xfree(sessptr);
814: return (idx);
815:
1.8 nicm 816: no_colon:
817: /* No colon in the string, first try as a window then as a session. */
818: if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) {
819: if (ambiguous)
820: goto not_found;
821: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
822: goto no_session;
823: idx = -1;
824: }
825:
826: if (sp != NULL)
827: *sp = s;
828:
829: return (idx);
830:
1.5 nicm 831: no_session:
832: if (ambiguous)
1.35 ! nicm 833: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 834: else
1.8 nicm 835: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 836: if (sessptr != NULL)
837: xfree(sessptr);
838: return (-2);
839:
840: not_found:
841: if (ambiguous)
842: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 843: else
1.5 nicm 844: ctx->error(ctx, "window not found: %s", arg);
845: if (sessptr != NULL)
846: xfree(sessptr);
847: return (-2);
1.12 nicm 848: }
849:
850: /*
851: * Find the target session, window and pane number or report an error and
852: * return NULL. The pane number is separated from the session:window by a .,
853: * such as mysession:mywindow.0.
854: */
855: struct winlink *
856: cmd_find_pane(struct cmd_ctx *ctx,
857: const char *arg, struct session **sp, struct window_pane **wpp)
858: {
859: struct session *s;
860: struct winlink *wl;
861: const char *period;
862: char *winptr, *paneptr;
863: const char *errstr;
864: u_int idx;
865:
866: /* Get the current session. */
867: if ((s = cmd_current_session(ctx)) == NULL) {
1.27 deraadt 868: ctx->error(ctx, "can't establish current session");
1.12 nicm 869: return (NULL);
870: }
871: if (sp != NULL)
872: *sp = s;
873:
874: /* A NULL argument means the current session, window and pane. */
875: if (arg == NULL) {
876: *wpp = s->curw->window->active;
877: return (s->curw);
878: }
879:
880: /* Look for a separating period. */
881: if ((period = strrchr(arg, '.')) == NULL)
882: goto no_period;
883:
884: /* Pull out the window part and parse it. */
885: winptr = xstrdup(arg);
886: winptr[period - arg] = '\0';
887: if (*winptr == '\0')
888: wl = s->curw;
889: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
890: goto error;
891:
892: /* Find the pane section and look it up. */
893: paneptr = winptr + (period - arg) + 1;
894: if (*paneptr == '\0')
895: *wpp = wl->window->active;
896: else {
897: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
898: if (errstr != NULL) {
899: ctx->error(ctx, "pane %s: %s", errstr, paneptr);
900: goto error;
901: }
902: *wpp = window_pane_at_index(wl->window, idx);
903: if (*wpp == NULL) {
904: ctx->error(ctx, "no such pane: %u", idx);
905: goto error;
906: }
907: }
908:
909: xfree(winptr);
910: return (wl);
911:
912: no_period:
913: /* Try as a pane number alone. */
914: idx = strtonum(arg, 0, INT_MAX, &errstr);
915: if (errstr != NULL)
916: goto lookup_window;
917:
918: /* Try index in the current session and window. */
919: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
920: goto lookup_window;
1.35 ! nicm 921:
1.12 nicm 922: return (s->curw);
923:
924: lookup_window:
925: /* Try as a window and use the active pane. */
926: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
927: *wpp = wl->window->active;
928: return (wl);
1.35 ! nicm 929:
1.12 nicm 930: error:
931: xfree(winptr);
932: return (NULL);
1.15 nicm 933: }
934:
935: /* Replace the first %% or %idx in template by s. */
936: char *
937: cmd_template_replace(char *template, const char *s, int idx)
938: {
939: char ch;
940: char *buf, *ptr;
941: int replaced;
942: size_t len;
943:
944: if (strstr(template, "%") == NULL)
945: return (xstrdup(template));
946:
947: buf = xmalloc(1);
948: *buf = '\0';
949: len = 0;
950: replaced = 0;
951:
952: ptr = template;
953: while (*ptr != '\0') {
954: switch (ch = *ptr++) {
955: case '%':
956: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
957: if (*ptr != '%' || replaced)
958: break;
959: replaced = 1;
960: }
961: ptr++;
962:
963: len += strlen(s);
964: buf = xrealloc(buf, 1, len + 1);
965: strlcat(buf, s, len + 1);
966: continue;
967: }
968: buf = xrealloc(buf, 1, len + 2);
969: buf[len++] = ch;
970: buf[len] = '\0';
971: }
972:
973: return (buf);
1.1 nicm 974: }
![[BACK]](/icons/back.gif){kind=icon}
Return to cmd.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux