Annotation of src/usr.bin/tmux/cmd.c, Revision 1.42
1.42 ! nicm 1: /* $OpenBSD: cmd.c,v 1.41 2010/06/21 01:46:36 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,
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:
1.31 nicm 114: struct session *cmd_choose_session(struct sessions *);
115: struct client *cmd_choose_client(struct clients *);
1.5 nicm 116: struct client *cmd_lookup_client(const char *);
117: struct session *cmd_lookup_session(const char *, int *);
118: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 119: int cmd_lookup_index(struct session *, const char *, int *);
1.5 nicm 120:
1.10 nicm 121: int
122: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
123: {
124: size_t arglen;
125: int i;
126:
127: *buf = '\0';
128: for (i = 0; i < argc; i++) {
129: if (strlcpy(buf, argv[i], len) >= len)
130: return (-1);
131: arglen = strlen(argv[i]) + 1;
132: buf += arglen;
133: len -= arglen;
134: }
135:
136: return (0);
137: }
138:
139: int
140: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
141: {
142: int i;
143: size_t arglen;
144:
145: if (argc == 0)
146: return (0);
147: *argv = xcalloc(argc, sizeof **argv);
148:
149: buf[len - 1] = '\0';
150: for (i = 0; i < argc; i++) {
151: if (len == 0) {
152: cmd_free_argv(argc, *argv);
153: return (-1);
154: }
155:
156: arglen = strlen(buf) + 1;
157: (*argv)[i] = xstrdup(buf);
158: buf += arglen;
159: len -= arglen;
160: }
161:
162: return (0);
163: }
164:
165: void
166: cmd_free_argv(int argc, char **argv)
167: {
168: int i;
169:
170: if (argc == 0)
1.35 nicm 171: return;
1.10 nicm 172: for (i = 0; i < argc; i++) {
173: if (argv[i] != NULL)
174: xfree(argv[i]);
175: }
176: xfree(argv);
177: }
178:
1.1 nicm 179: struct cmd *
180: cmd_parse(int argc, char **argv, char **cause)
181: {
182: const struct cmd_entry **entryp, *entry;
1.27 deraadt 183: struct cmd *cmd;
1.1 nicm 184: char s[BUFSIZ];
1.3 nicm 185: int opt, ambiguous = 0;
1.1 nicm 186:
187: *cause = NULL;
1.2 nicm 188: if (argc == 0) {
189: xasprintf(cause, "no command");
1.1 nicm 190: return (NULL);
1.2 nicm 191: }
1.1 nicm 192:
193: entry = NULL;
194: for (entryp = cmd_table; *entryp != NULL; entryp++) {
195: if ((*entryp)->alias != NULL &&
196: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 197: ambiguous = 0;
1.1 nicm 198: entry = *entryp;
199: break;
200: }
201:
202: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
203: continue;
204: if (entry != NULL)
1.3 nicm 205: ambiguous = 1;
1.1 nicm 206: entry = *entryp;
207:
208: /* Bail now if an exact match. */
209: if (strcmp(entry->name, argv[0]) == 0)
210: break;
211: }
1.3 nicm 212: if (ambiguous)
213: goto ambiguous;
1.1 nicm 214: if (entry == NULL) {
215: xasprintf(cause, "unknown command: %s", argv[0]);
216: return (NULL);
217: }
218:
219: optreset = 1;
220: optind = 1;
221: if (entry->parse == NULL) {
222: while ((opt = getopt(argc, argv, "")) != -1) {
223: switch (opt) {
224: default:
225: goto usage;
226: }
227: }
228: argc -= optind;
229: argv += optind;
230: if (argc != 0)
231: goto usage;
232: }
233:
234: cmd = xmalloc(sizeof *cmd);
235: cmd->entry = entry;
236: cmd->data = NULL;
237: if (entry->parse != NULL) {
238: if (entry->parse(cmd, argc, argv, cause) != 0) {
239: xfree(cmd);
240: return (NULL);
241: }
242: }
243: return (cmd);
244:
245: ambiguous:
246: *s = '\0';
247: for (entryp = cmd_table; *entryp != NULL; entryp++) {
248: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
249: continue;
250: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
251: break;
252: if (strlcat(s, ", ", sizeof s) >= sizeof s)
253: break;
254: }
255: s[strlen(s) - 2] = '\0';
256: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
257: return (NULL);
258:
259: usage:
260: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
261: return (NULL);
262: }
263:
264: int
265: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
266: {
267: return (cmd->entry->exec(cmd, ctx));
268: }
269:
270: void
271: cmd_free(struct cmd *cmd)
272: {
273: if (cmd->data != NULL && cmd->entry->free != NULL)
274: cmd->entry->free(cmd);
275: xfree(cmd);
276: }
277:
278: size_t
279: cmd_print(struct cmd *cmd, char *buf, size_t len)
280: {
1.33 nicm 281: if (cmd->entry->print == NULL)
1.1 nicm 282: return (xsnprintf(buf, len, "%s", cmd->entry->name));
283: return (cmd->entry->print(cmd, buf, len));
284: }
285:
1.5 nicm 286: /*
287: * Figure out the current session. Use: 1) the current session, if the command
1.31 nicm 288: * context has one; 2) the most recently used session containing the pty of the
289: * calling client, if any; 3) the session specified in the TMUX variable from
290: * the environment (as passed from the client); 4) the most recently used
291: * session from all sessions.
1.5 nicm 292: */
1.1 nicm 293: struct session *
294: cmd_current_session(struct cmd_ctx *ctx)
295: {
296: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 297: struct client *c = ctx->cmdclient;
1.5 nicm 298: struct session *s;
1.11 nicm 299: struct sessions ss;
300: struct winlink *wl;
301: struct window_pane *wp;
302: u_int i;
303: int found;
1.1 nicm 304:
1.14 nicm 305: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
306: return (ctx->curclient->session);
1.1 nicm 307:
1.11 nicm 308: /*
309: * If the name of the calling client's pty is know, build a list of the
310: * sessions that contain it and if any choose either the first or the
311: * newest.
312: */
313: if (c != NULL && c->tty.path != NULL) {
314: ARRAY_INIT(&ss);
315: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
316: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
317: continue;
318: found = 0;
319: RB_FOREACH(wl, winlinks, &s->windows) {
320: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
321: if (strcmp(wp->tty, c->tty.path) == 0) {
322: found = 1;
323: break;
324: }
325: }
326: if (found)
327: break;
328: }
329: if (found)
330: ARRAY_ADD(&ss, s);
331: }
332:
1.31 nicm 333: s = cmd_choose_session(&ss);
1.11 nicm 334: ARRAY_FREE(&ss);
335: if (s != NULL)
336: return (s);
337: }
338:
339: /* Use the session from the TMUX environment variable. */
1.1 nicm 340: if (data != NULL && data->pid != -1) {
1.5 nicm 341: if (data->pid != getpid())
1.1 nicm 342: return (NULL);
1.5 nicm 343: if (data->idx > ARRAY_LENGTH(&sessions))
1.1 nicm 344: return (NULL);
1.5 nicm 345: if ((s = ARRAY_ITEM(&sessions, data->idx)) == NULL)
1.1 nicm 346: return (NULL);
347: return (s);
348: }
349:
1.31 nicm 350: return (cmd_choose_session(&sessions));
1.5 nicm 351: }
352:
1.31 nicm 353: /* Find the most recently used session from a list. */
1.5 nicm 354: struct session *
1.31 nicm 355: cmd_choose_session(struct sessions *ss)
1.5 nicm 356: {
1.31 nicm 357: struct session *s, *sbest;
1.5 nicm 358: struct timeval *tv = NULL;
359: u_int i;
360:
1.31 nicm 361: sbest = NULL;
1.11 nicm 362: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
363: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 364: continue;
365:
1.31 nicm 366: if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
367: sbest = s;
368: tv = &s->activity_time;
1.1 nicm 369: }
370: }
1.5 nicm 371:
1.31 nicm 372: return (sbest);
1.1 nicm 373: }
374:
1.30 nicm 375: /*
376: * Find the current client. First try the current client if set, then pick the
1.31 nicm 377: * most recently used of the clients attached to the current session if any,
378: * then of all clients.
1.30 nicm 379: */
380: struct client *
381: cmd_current_client(struct cmd_ctx *ctx)
382: {
383: struct session *s;
384: struct client *c;
385: struct clients cc;
386: u_int i;
387:
388: if (ctx->curclient != NULL)
389: return (ctx->curclient);
390:
391: /*
392: * No current client set. Find the current session and return the
393: * newest of its clients.
394: */
395: s = cmd_current_session(ctx);
396: if (s != NULL && !(s->flags & SESSION_UNATTACHED)) {
397: ARRAY_INIT(&cc);
398: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
399: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
400: continue;
401: if (s == c->session)
402: ARRAY_ADD(&cc, c);
403: }
404:
1.31 nicm 405: c = cmd_choose_client(&cc);
1.30 nicm 406: ARRAY_FREE(&cc);
407: if (c != NULL)
408: return (c);
409: }
410:
1.31 nicm 411: return (cmd_choose_client(&clients));
1.30 nicm 412: }
413:
1.31 nicm 414: /* Choose the most recently used client from a list. */
1.20 nicm 415: struct client *
1.31 nicm 416: cmd_choose_client(struct clients *cc)
1.20 nicm 417: {
1.31 nicm 418: struct client *c, *cbest;
1.20 nicm 419: struct timeval *tv = NULL;
420: u_int i;
421:
1.31 nicm 422: cbest = NULL;
1.30 nicm 423: for (i = 0; i < ARRAY_LENGTH(cc); i++) {
424: if ((c = ARRAY_ITEM(cc, i)) == NULL)
1.20 nicm 425: continue;
426: if (c->session == NULL)
427: continue;
428:
1.31 nicm 429: if (tv == NULL || timercmp(&c->activity_time, tv, >)) {
430: cbest = c;
431: tv = &c->activity_time;
1.20 nicm 432: }
433: }
434:
1.31 nicm 435: return (cbest);
1.20 nicm 436: }
437:
1.5 nicm 438: /* Find the target client or report an error and return NULL. */
1.1 nicm 439: struct client *
440: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
441: {
1.30 nicm 442: struct client *c;
1.5 nicm 443: char *tmparg;
444: size_t arglen;
1.1 nicm 445:
1.5 nicm 446: /* A NULL argument means the current client. */
1.30 nicm 447: if (arg == NULL)
448: return (cmd_current_client(ctx));
1.5 nicm 449: tmparg = xstrdup(arg);
450:
451: /* Trim a single trailing colon if any. */
452: arglen = strlen(tmparg);
453: if (arglen != 0 && tmparg[arglen - 1] == ':')
454: tmparg[arglen - 1] = '\0';
455:
456: /* Find the client, if any. */
457: c = cmd_lookup_client(tmparg);
458:
459: /* If no client found, report an error. */
460: if (c == NULL)
461: ctx->error(ctx, "client not found: %s", tmparg);
462:
463: xfree(tmparg);
464: return (c);
465: }
466:
467: /*
468: * Lookup a client by device path. Either of a full match and a match without a
469: * leading _PATH_DEV ("/dev/") is accepted.
470: */
471: struct client *
472: cmd_lookup_client(const char *name)
473: {
474: struct client *c;
475: const char *path;
476: u_int i;
477:
478: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25 nicm 479: c = ARRAY_ITEM(&clients, i);
480: if (c == NULL || c->session == NULL)
1.5 nicm 481: continue;
482: path = c->tty.path;
483:
484: /* Check for exact matches. */
485: if (strcmp(name, path) == 0)
486: return (c);
487:
488: /* Check without leading /dev if present. */
489: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
490: continue;
491: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
492: return (c);
493: }
494:
495: return (NULL);
496: }
497:
498: /* Lookup a session by name. If no session is found, NULL is returned. */
499: struct session *
500: cmd_lookup_session(const char *name, int *ambiguous)
501: {
502: struct session *s, *sfound;
503: u_int i;
504:
505: *ambiguous = 0;
506:
507: /*
1.28 nicm 508: * Look for matches. First look for exact matches - session names must
509: * be unique so an exact match can't be ambigious and can just be
510: * returned.
1.5 nicm 511: */
1.35 nicm 512: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
1.5 nicm 513: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
514: continue;
515: if (strcmp(name, s->name) == 0)
516: return (s);
1.28 nicm 517: }
518:
519: /*
520: * Otherwise look for partial matches, returning early if it is found to
521: * be ambiguous.
522: */
523: sfound = NULL;
1.35 nicm 524: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
1.28 nicm 525: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
526: continue;
1.5 nicm 527: if (strncmp(name, s->name, strlen(name)) == 0 ||
528: fnmatch(name, s->name, 0) == 0) {
529: if (sfound != NULL) {
530: *ambiguous = 1;
531: return (NULL);
532: }
533: sfound = s;
534: }
535: }
1.35 nicm 536: return (sfound);
1.5 nicm 537: }
538:
539: /*
1.8 nicm 540: * Lookup a window or return -1 if not found or ambigious. First try as an
541: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
1.41 nicm 542: * idx if the window index is a valid number but there is no window with that
1.8 nicm 543: * index.
1.5 nicm 544: */
545: struct winlink *
546: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
547: {
548: struct winlink *wl, *wlfound;
549: const char *errstr;
550: u_int idx;
551:
552: *ambiguous = 0;
553:
554: /* First see if this is a valid window index in this session. */
555: idx = strtonum(name, 0, INT_MAX, &errstr);
556: if (errstr == NULL) {
557: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
558: return (wl);
559: }
1.35 nicm 560:
1.5 nicm 561: /* Look for exact matches, error if more than one. */
562: wlfound = NULL;
563: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 564: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 565: if (wlfound != NULL) {
566: *ambiguous = 1;
567: return (NULL);
568: }
569: wlfound = wl;
1.1 nicm 570: }
571: }
1.5 nicm 572: if (wlfound != NULL)
573: return (wlfound);
574:
575: /* Now look for pattern matches, again error if multiple. */
576: wlfound = NULL;
577: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 578: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
579: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 580: if (wlfound != NULL) {
581: *ambiguous = 1;
582: return (NULL);
583: }
584: wlfound = wl;
585: }
1.35 nicm 586: }
1.5 nicm 587: if (wlfound != NULL)
588: return (wlfound);
589:
590: return (NULL);
1.1 nicm 591: }
592:
1.8 nicm 593: /*
594: * Find a window index - if the window doesn't exist, check if it is a
595: * potential index and return it anyway.
596: */
597: int
598: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
599: {
600: struct winlink *wl;
601: const char *errstr;
602: u_int idx;
603:
604: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
605: return (wl->idx);
606: if (*ambiguous)
607: return (-1);
608:
609: idx = strtonum(name, 0, INT_MAX, &errstr);
610: if (errstr == NULL)
611: return (idx);
612:
613: return (-1);
614: }
615:
1.5 nicm 616: /* Find the target session or report an error and return NULL. */
1.1 nicm 617: struct session *
618: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
619: {
620: struct session *s;
1.5 nicm 621: struct client *c;
622: char *tmparg;
623: size_t arglen;
624: int ambiguous;
1.1 nicm 625:
1.5 nicm 626: /* A NULL argument means the current session. */
1.1 nicm 627: if (arg == NULL)
1.5 nicm 628: return (cmd_current_session(ctx));
629: tmparg = xstrdup(arg);
630:
631: /* Trim a single trailing colon if any. */
632: arglen = strlen(tmparg);
633: if (arglen != 0 && tmparg[arglen - 1] == ':')
634: tmparg[arglen - 1] = '\0';
635:
636: /* Find the session, if any. */
637: s = cmd_lookup_session(tmparg, &ambiguous);
638:
639: /* If it doesn't, try to match it as a client. */
640: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
641: s = c->session;
642:
643: /* If no session found, report an error. */
644: if (s == NULL) {
645: if (ambiguous)
646: ctx->error(ctx, "more than one session: %s", tmparg);
647: else
648: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 649: }
1.5 nicm 650:
651: xfree(tmparg);
1.1 nicm 652: return (s);
653: }
654:
1.5 nicm 655: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 656: struct winlink *
657: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
658: {
659: struct session *s;
660: struct winlink *wl;
1.5 nicm 661: const char *winptr;
662: char *sessptr = NULL;
663: int ambiguous = 0;
1.41 nicm 664: int n = 1;
1.5 nicm 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,
1.38 nicm 704: * otherwise try special cases then to look it up in the session.
1.5 nicm 705: */
1.8 nicm 706: if (*winptr == '\0')
1.5 nicm 707: wl = s->curw;
1.38 nicm 708: else if (winptr[0] == '!' && winptr[1] == '\0')
709: wl = TAILQ_FIRST(&s->lastw);
1.41 nicm 710: else if (winptr[0] == '+' || winptr[0] == '-') {
711: if (winptr[1] != '\0')
712: n = strtonum(winptr + 1, 1, INT_MAX, NULL);
713: if (n == 0)
714: wl = cmd_lookup_window(s, winptr, &ambiguous);
715: else {
716: if (winptr[0] == '+')
717: wl = winlink_next_by_number(s->curw, n);
718: else
719: wl = winlink_previous_by_number(s->curw, n);
720: /* Search by name before giving up. */
721: if (wl == NULL)
722: wl = cmd_lookup_window(s, winptr, &ambiguous);
723: }
724: } else
1.38 nicm 725: wl = cmd_lookup_window(s, winptr, &ambiguous);
726: if (wl == NULL)
1.5 nicm 727: goto not_found;
1.35 nicm 728:
1.5 nicm 729: if (sessptr != NULL)
730: xfree(sessptr);
731: return (wl);
732:
1.8 nicm 733: no_colon:
1.38 nicm 734: /*
735: * No colon in the string, first try special cases, then as a window
736: * and lastly as a session.
737: */
738: if (arg[0] == '!' && arg[1] == '\0') {
739: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
740: goto not_found;
1.41 nicm 741: } else if (arg[0] == '+' || arg[0] == '-') {
742: if (arg[1] != '\0')
743: n = strtonum(arg + 1, 1, INT_MAX, NULL);
744: if (n == 0)
745: wl = cmd_lookup_window(s, arg, &ambiguous);
746: else {
747: if (arg[0] == '+')
748: wl = winlink_next_by_number(s->curw, n);
749: else
750: wl = winlink_previous_by_number(s->curw, n);
751: /* Search by name before giving up. */
752: if (wl == NULL)
753: wl = cmd_lookup_window(s, arg, &ambiguous);
754: }
755: if (wl == NULL)
756: goto lookup_session;
757: } else if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL)
758: goto lookup_session;
1.8 nicm 759:
760: if (sp != NULL)
761: *sp = s;
762:
763: return (wl);
764:
1.41 nicm 765: lookup_session:
766: if (ambiguous)
767: goto not_found;
768: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
769: goto no_session;
770:
771: if (sp != NULL)
772: *sp = s;
773:
774: return (s->curw);
775:
1.5 nicm 776: no_session:
777: if (ambiguous)
1.8 nicm 778: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 779: else
1.8 nicm 780: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 781: if (sessptr != NULL)
782: xfree(sessptr);
783: return (NULL);
784:
785: not_found:
786: if (ambiguous)
787: ctx->error(ctx, "multiple windows: %s", arg);
788: else
789: ctx->error(ctx, "window not found: %s", arg);
790: if (sessptr != NULL)
791: xfree(sessptr);
792: return (NULL);
793: }
1.1 nicm 794:
1.5 nicm 795: /*
796: * Find the target session and window index, whether or not it exists in the
797: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 798: * used when parsing an argument for a window target that may not exist (for
799: * example if it is going to be created).
1.5 nicm 800: */
801: int
802: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
803: {
804: struct session *s;
1.38 nicm 805: struct winlink *wl;
1.8 nicm 806: const char *winptr;
1.5 nicm 807: char *sessptr = NULL;
808: int idx, ambiguous = 0;
1.41 nicm 809: int n = 1;
1.5 nicm 810:
811: /*
812: * Find the current session. There must always be a current session, if
813: * it can't be found, report an error.
814: */
815: if ((s = cmd_current_session(ctx)) == NULL) {
816: ctx->error(ctx, "can't establish current session");
1.9 nicm 817: return (-2);
1.1 nicm 818: }
1.5 nicm 819:
820: /* A NULL argument means the current session and "no window" (-1). */
821: if (arg == NULL) {
822: if (sp != NULL)
823: *sp = s;
824: return (-1);
825: }
826:
827: /* Time to look at the argument. If it is empty, that is an error. */
828: if (*arg == '\0')
829: goto not_found;
830:
831: /* Find the separating colon. If none, assume the current session. */
832: winptr = strchr(arg, ':');
833: if (winptr == NULL)
1.8 nicm 834: goto no_colon;
835: winptr++; /* skip : */
836: sessptr = xstrdup(arg);
837: *strchr(sessptr, ':') = '\0';
1.5 nicm 838:
839: /* Try to lookup the session if present. */
840: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 841: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 842: goto no_session;
843: }
1.1 nicm 844: if (sp != NULL)
845: *sp = s;
846:
1.5 nicm 847: /*
1.8 nicm 848: * Then work out the window. An empty string is a new window otherwise
849: * try to look it up in the session.
1.5 nicm 850: */
1.8 nicm 851: if (*winptr == '\0')
1.38 nicm 852: idx = -1;
853: else if (winptr[0] == '!' && winptr[1] == '\0') {
854: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
855: goto not_found;
856: idx = wl->idx;
1.41 nicm 857: } else if (winptr[0] == '+' || winptr[0] == '-') {
858: if (winptr[1] != '\0')
859: n = strtonum(winptr + 1, 1, INT_MAX, NULL);
860: if (winptr[0] == '+' && s->curw->idx == INT_MAX)
861: idx = cmd_lookup_index(s, winptr, &ambiguous);
862: else if (winptr[0] == '-' && s->curw->idx == 0)
863: idx = cmd_lookup_index(s, winptr, &ambiguous);
864: else if (n == 0)
865: idx = cmd_lookup_index(s, winptr, &ambiguous);
866: else if (winptr[0] == '+')
867: idx = s->curw->idx + n;
868: else
869: idx = s->curw->idx - n;
870: if (idx < 0)
871: goto invalid_index;
872: } else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1)
873: goto invalid_index;
1.35 nicm 874:
1.5 nicm 875: if (sessptr != NULL)
876: xfree(sessptr);
877: return (idx);
878:
1.8 nicm 879: no_colon:
1.38 nicm 880: /*
881: * No colon in the string, first try special cases, then as a window
882: * and lastly as a session.
883: */
884: if (arg[0] == '!' && arg[1] == '\0') {
885: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
886: goto not_found;
887: idx = wl->idx;
1.41 nicm 888: } else if (arg[0] == '+' || arg[0] == '-') {
889: if (arg[1] != '\0')
890: n = strtonum(arg + 1, 1, INT_MAX, NULL);
891: if (arg[0] == '+' && s->curw->idx == INT_MAX)
892: idx = cmd_lookup_index(s, arg, &ambiguous);
893: else if (arg[0] == '-' && s->curw->idx == 0)
894: idx = cmd_lookup_index(s, arg, &ambiguous);
895: else if (n == 0)
896: idx = cmd_lookup_index(s, arg, &ambiguous);
897: else if (arg[0] == '+')
898: idx = s->curw->idx + n;
899: else
900: idx = s->curw->idx - n;
901: if (idx < 0)
902: goto lookup_session;
903: } else if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1)
904: goto lookup_session;
1.8 nicm 905:
906: if (sp != NULL)
907: *sp = s;
908:
909: return (idx);
910:
1.41 nicm 911: lookup_session:
912: if (ambiguous)
913: goto not_found;
914: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
915: goto no_session;
916:
917: if (sp != NULL)
918: *sp = s;
919:
920: return (-1);
921:
1.5 nicm 922: no_session:
923: if (ambiguous)
1.35 nicm 924: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 925: else
1.8 nicm 926: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 927: if (sessptr != NULL)
928: xfree(sessptr);
929: return (-2);
930:
1.41 nicm 931: invalid_index:
932: if (ambiguous)
933: goto not_found;
934: ctx->error(ctx, "invalid index: %s", arg);
935:
936: if (sessptr != NULL)
937: xfree(sessptr);
938: return (-2);
939:
1.5 nicm 940: not_found:
941: if (ambiguous)
942: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 943: else
1.5 nicm 944: ctx->error(ctx, "window not found: %s", arg);
945: if (sessptr != NULL)
946: xfree(sessptr);
947: return (-2);
1.12 nicm 948: }
949:
950: /*
951: * Find the target session, window and pane number or report an error and
952: * return NULL. The pane number is separated from the session:window by a .,
953: * such as mysession:mywindow.0.
954: */
955: struct winlink *
956: cmd_find_pane(struct cmd_ctx *ctx,
957: const char *arg, struct session **sp, struct window_pane **wpp)
958: {
1.36 nicm 959: struct session *s;
960: struct winlink *wl;
961: struct layout_cell *lc;
962: const char *period, *errstr;
963: char *winptr, *paneptr;
1.41 nicm 964: u_int idx, n = 1;
1.12 nicm 965:
966: /* Get the current session. */
967: if ((s = cmd_current_session(ctx)) == NULL) {
1.27 deraadt 968: ctx->error(ctx, "can't establish current session");
1.12 nicm 969: return (NULL);
970: }
971: if (sp != NULL)
972: *sp = s;
973:
974: /* A NULL argument means the current session, window and pane. */
975: if (arg == NULL) {
976: *wpp = s->curw->window->active;
977: return (s->curw);
978: }
979:
980: /* Look for a separating period. */
981: if ((period = strrchr(arg, '.')) == NULL)
982: goto no_period;
983:
984: /* Pull out the window part and parse it. */
985: winptr = xstrdup(arg);
986: winptr[period - arg] = '\0';
987: if (*winptr == '\0')
988: wl = s->curw;
989: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
990: goto error;
991:
992: /* Find the pane section and look it up. */
993: paneptr = winptr + (period - arg) + 1;
994: if (*paneptr == '\0')
995: *wpp = wl->window->active;
1.41 nicm 996: else if (paneptr[0] == '+' || paneptr[0] == '-') {
997: if (paneptr[1] != '\0')
998: n = strtonum(paneptr + 1, 1, INT_MAX, NULL);
999: idx = window_pane_index(wl->window, wl->window->active);
1000: if (paneptr[0] == '+' && idx == INT_MAX)
1001: *wpp = TAILQ_FIRST(&wl->window->panes);
1002: else if (paneptr[0] == '-' && idx == 0)
1003: *wpp = TAILQ_LAST(&wl->window->panes, window_panes);
1004: else if (n == 0)
1005: *wpp = wl->window->active;
1006: else if (paneptr[0] == '+')
1007: *wpp = window_pane_at_index(wl->window, idx + n);
1008: else
1009: *wpp = window_pane_at_index(wl->window, idx - n);
1010: if (paneptr[0] == '+' && *wpp == NULL)
1011: *wpp = TAILQ_FIRST(&wl->window->panes);
1012: else if (paneptr[0] == '-' && *wpp == NULL)
1013: *wpp = TAILQ_LAST(&wl->window->panes, window_panes);
1014: else if (*wpp == NULL)
1015: goto error;
1016: } else {
1.12 nicm 1017: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
1.36 nicm 1018: if (errstr != NULL)
1019: goto lookup_string;
1.12 nicm 1020: *wpp = window_pane_at_index(wl->window, idx);
1.36 nicm 1021: if (*wpp == NULL)
1022: goto lookup_string;
1.12 nicm 1023: }
1024:
1025: xfree(winptr);
1026: return (wl);
1027:
1.36 nicm 1028: lookup_string:
1029: /* Try pane string description. */
1.39 nicm 1030: if ((lc = layout_find_string(wl->window, paneptr)) == NULL) {
1.36 nicm 1031: ctx->error(ctx, "can't find pane: %s", paneptr);
1032: goto error;
1033: }
1034: *wpp = lc->wp;
1035:
1036: xfree(winptr);
1.39 nicm 1037: return (wl);
1.36 nicm 1038:
1.12 nicm 1039: no_period:
1040: /* Try as a pane number alone. */
1041: idx = strtonum(arg, 0, INT_MAX, &errstr);
1042: if (errstr != NULL)
1043: goto lookup_window;
1044:
1045: /* Try index in the current session and window. */
1046: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
1047: goto lookup_window;
1.35 nicm 1048:
1.12 nicm 1049: return (s->curw);
1050:
1051: lookup_window:
1.36 nicm 1052: /* Try pane string description. */
1053: if ((lc = layout_find_string(s->curw->window, arg)) != NULL) {
1054: *wpp = lc->wp;
1055: return (s->curw);
1056: }
1057:
1.12 nicm 1058: /* Try as a window and use the active pane. */
1059: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
1060: *wpp = wl->window->active;
1061: return (wl);
1.35 nicm 1062:
1.12 nicm 1063: error:
1064: xfree(winptr);
1065: return (NULL);
1.15 nicm 1066: }
1067:
1068: /* Replace the first %% or %idx in template by s. */
1069: char *
1070: cmd_template_replace(char *template, const char *s, int idx)
1071: {
1072: char ch;
1073: char *buf, *ptr;
1074: int replaced;
1075: size_t len;
1076:
1077: if (strstr(template, "%") == NULL)
1078: return (xstrdup(template));
1079:
1080: buf = xmalloc(1);
1081: *buf = '\0';
1082: len = 0;
1083: replaced = 0;
1084:
1085: ptr = template;
1086: while (*ptr != '\0') {
1087: switch (ch = *ptr++) {
1088: case '%':
1089: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
1090: if (*ptr != '%' || replaced)
1091: break;
1092: replaced = 1;
1093: }
1094: ptr++;
1095:
1096: len += strlen(s);
1097: buf = xrealloc(buf, 1, len + 1);
1098: strlcat(buf, s, len + 1);
1099: continue;
1100: }
1101: buf = xrealloc(buf, 1, len + 2);
1102: buf[len++] = ch;
1103: buf[len] = '\0';
1104: }
1105:
1106: return (buf);
1.1 nicm 1107: }
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