Annotation of src/usr.bin/tmux/cmd.c, Revision 1.27
1.27 ! deraadt 1: /* $OpenBSD: cmd.c,v 1.26 2009/10/14 20:52:28 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,
1.15 nicm 34: &cmd_choose_client_entry,
1.1 nicm 35: &cmd_choose_session_entry,
36: &cmd_choose_window_entry,
37: &cmd_clear_history_entry,
38: &cmd_clock_mode_entry,
39: &cmd_command_prompt_entry,
40: &cmd_confirm_before_entry,
41: &cmd_copy_buffer_entry,
42: &cmd_copy_mode_entry,
43: &cmd_delete_buffer_entry,
44: &cmd_detach_client_entry,
1.7 nicm 45: &cmd_display_message_entry,
1.16 nicm 46: &cmd_display_panes_entry,
1.1 nicm 47: &cmd_down_pane_entry,
48: &cmd_find_window_entry,
49: &cmd_has_session_entry,
1.4 nicm 50: &cmd_if_shell_entry,
1.1 nicm 51: &cmd_kill_pane_entry,
52: &cmd_kill_server_entry,
53: &cmd_kill_session_entry,
54: &cmd_kill_window_entry,
55: &cmd_last_window_entry,
56: &cmd_link_window_entry,
57: &cmd_list_buffers_entry,
58: &cmd_list_clients_entry,
59: &cmd_list_commands_entry,
60: &cmd_list_keys_entry,
1.23 nicm 61: &cmd_list_panes_entry,
1.1 nicm 62: &cmd_list_sessions_entry,
63: &cmd_list_windows_entry,
64: &cmd_load_buffer_entry,
1.19 nicm 65: &cmd_lock_client_entry,
1.1 nicm 66: &cmd_lock_server_entry,
1.19 nicm 67: &cmd_lock_session_entry,
1.1 nicm 68: &cmd_move_window_entry,
69: &cmd_new_session_entry,
70: &cmd_new_window_entry,
71: &cmd_next_layout_entry,
72: &cmd_next_window_entry,
73: &cmd_paste_buffer_entry,
1.24 nicm 74: &cmd_pipe_pane_entry,
1.1 nicm 75: &cmd_previous_layout_entry,
76: &cmd_previous_window_entry,
77: &cmd_refresh_client_entry,
78: &cmd_rename_session_entry,
79: &cmd_rename_window_entry,
80: &cmd_resize_pane_entry,
81: &cmd_respawn_window_entry,
82: &cmd_rotate_window_entry,
1.17 nicm 83: &cmd_run_shell_entry,
1.1 nicm 84: &cmd_save_buffer_entry,
85: &cmd_select_layout_entry,
86: &cmd_select_pane_entry,
87: &cmd_select_prompt_entry,
88: &cmd_select_window_entry,
89: &cmd_send_keys_entry,
90: &cmd_send_prefix_entry,
91: &cmd_server_info_entry,
92: &cmd_set_buffer_entry,
1.13 nicm 93: &cmd_set_environment_entry,
1.1 nicm 94: &cmd_set_option_entry,
95: &cmd_set_window_option_entry,
96: &cmd_show_buffer_entry,
1.13 nicm 97: &cmd_show_environment_entry,
1.1 nicm 98: &cmd_show_options_entry,
99: &cmd_show_window_options_entry,
100: &cmd_source_file_entry,
101: &cmd_split_window_entry,
102: &cmd_start_server_entry,
103: &cmd_suspend_client_entry,
104: &cmd_swap_pane_entry,
105: &cmd_swap_window_entry,
106: &cmd_switch_client_entry,
107: &cmd_unbind_key_entry,
108: &cmd_unlink_window_entry,
109: &cmd_up_pane_entry,
110: NULL
111: };
112:
1.11 nicm 113: struct session *cmd_newest_session(struct sessions *);
1.20 nicm 114: struct client *cmd_newest_client(void);
1.5 nicm 115: struct client *cmd_lookup_client(const char *);
116: struct session *cmd_lookup_session(const char *, int *);
117: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 118: int cmd_lookup_index(struct session *, const char *, int *);
1.5 nicm 119:
1.10 nicm 120: int
121: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
122: {
123: size_t arglen;
124: int i;
125:
126: *buf = '\0';
127: for (i = 0; i < argc; i++) {
128: if (strlcpy(buf, argv[i], len) >= len)
129: return (-1);
130: arglen = strlen(argv[i]) + 1;
131: buf += arglen;
132: len -= arglen;
133: }
134:
135: return (0);
136: }
137:
138: int
139: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
140: {
141: int i;
142: size_t arglen;
143:
144: if (argc == 0)
145: return (0);
146: *argv = xcalloc(argc, sizeof **argv);
147:
148: buf[len - 1] = '\0';
149: for (i = 0; i < argc; i++) {
150: if (len == 0) {
151: cmd_free_argv(argc, *argv);
152: return (-1);
153: }
154:
155: arglen = strlen(buf) + 1;
156: (*argv)[i] = xstrdup(buf);
157: buf += arglen;
158: len -= arglen;
159: }
160:
161: return (0);
162: }
163:
164: void
165: cmd_free_argv(int argc, char **argv)
166: {
167: int i;
168:
169: if (argc == 0)
170: return;
171: for (i = 0; i < argc; i++) {
172: if (argv[i] != NULL)
173: xfree(argv[i]);
174: }
175: xfree(argv);
176: }
177:
1.1 nicm 178: struct cmd *
179: cmd_parse(int argc, char **argv, char **cause)
180: {
181: const struct cmd_entry **entryp, *entry;
1.27 ! deraadt 182: struct cmd *cmd;
1.1 nicm 183: char s[BUFSIZ];
1.3 nicm 184: int opt, ambiguous = 0;
1.1 nicm 185:
186: *cause = NULL;
1.2 nicm 187: if (argc == 0) {
188: xasprintf(cause, "no command");
1.1 nicm 189: return (NULL);
1.2 nicm 190: }
1.1 nicm 191:
192: entry = NULL;
193: for (entryp = cmd_table; *entryp != NULL; entryp++) {
194: if ((*entryp)->alias != NULL &&
195: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 196: ambiguous = 0;
1.1 nicm 197: entry = *entryp;
198: break;
199: }
200:
201: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
202: continue;
203: if (entry != NULL)
1.3 nicm 204: ambiguous = 1;
1.1 nicm 205: entry = *entryp;
206:
207: /* Bail now if an exact match. */
208: if (strcmp(entry->name, argv[0]) == 0)
209: break;
210: }
1.3 nicm 211: if (ambiguous)
212: goto ambiguous;
1.1 nicm 213: if (entry == NULL) {
214: xasprintf(cause, "unknown command: %s", argv[0]);
215: return (NULL);
216: }
217:
218: optreset = 1;
219: optind = 1;
220: if (entry->parse == NULL) {
221: while ((opt = getopt(argc, argv, "")) != -1) {
222: switch (opt) {
223: default:
224: goto usage;
225: }
226: }
227: argc -= optind;
228: argv += optind;
229: if (argc != 0)
230: goto usage;
231: }
232:
233: cmd = xmalloc(sizeof *cmd);
234: cmd->entry = entry;
235: cmd->data = NULL;
236: if (entry->parse != NULL) {
237: if (entry->parse(cmd, argc, argv, cause) != 0) {
238: xfree(cmd);
239: return (NULL);
240: }
241: }
242: return (cmd);
243:
244: ambiguous:
245: *s = '\0';
246: for (entryp = cmd_table; *entryp != NULL; entryp++) {
247: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
248: continue;
249: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
250: break;
251: if (strlcat(s, ", ", sizeof s) >= sizeof s)
252: break;
253: }
254: s[strlen(s) - 2] = '\0';
255: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
256: return (NULL);
257:
258: usage:
259: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
260: return (NULL);
261: }
262:
263: int
264: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
265: {
266: return (cmd->entry->exec(cmd, ctx));
267: }
268:
269: void
270: cmd_free(struct cmd *cmd)
271: {
272: if (cmd->data != NULL && cmd->entry->free != NULL)
273: cmd->entry->free(cmd);
274: xfree(cmd);
275: }
276:
277: size_t
278: cmd_print(struct cmd *cmd, char *buf, size_t len)
279: {
280: if (cmd->entry->print == NULL) {
281: return (xsnprintf(buf, len, "%s", cmd->entry->name));
282: }
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
1.11 nicm 288: * context has one; 2) the session containing the pty of the calling client, if
289: * any 3) the session specified in the TMUX variable from the environment (as
290: * passed from the client); 3) the newest session.
1.5 nicm 291: */
1.1 nicm 292: struct session *
293: cmd_current_session(struct cmd_ctx *ctx)
294: {
295: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 296: struct client *c = ctx->cmdclient;
1.5 nicm 297: struct session *s;
1.11 nicm 298: struct sessions ss;
299: struct winlink *wl;
300: struct window_pane *wp;
301: u_int i;
302: int found;
1.1 nicm 303:
1.14 nicm 304: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
305: return (ctx->curclient->session);
1.1 nicm 306:
1.11 nicm 307: /*
308: * If the name of the calling client's pty is know, build a list of the
309: * sessions that contain it and if any choose either the first or the
310: * newest.
311: */
312: if (c != NULL && c->tty.path != NULL) {
313: ARRAY_INIT(&ss);
314: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
315: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
316: continue;
317: found = 0;
318: RB_FOREACH(wl, winlinks, &s->windows) {
319: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
320: if (strcmp(wp->tty, c->tty.path) == 0) {
321: found = 1;
322: break;
323: }
324: }
325: if (found)
326: break;
327: }
328: if (found)
329: ARRAY_ADD(&ss, s);
330: }
331:
332: s = cmd_newest_session(&ss);
333: ARRAY_FREE(&ss);
334: if (s != NULL)
335: return (s);
336: }
337:
338: /* Use the session from the TMUX environment variable. */
1.1 nicm 339: if (data != NULL && data->pid != -1) {
1.5 nicm 340: if (data->pid != getpid())
1.1 nicm 341: return (NULL);
1.5 nicm 342: if (data->idx > ARRAY_LENGTH(&sessions))
1.1 nicm 343: return (NULL);
1.5 nicm 344: if ((s = ARRAY_ITEM(&sessions, data->idx)) == NULL)
1.1 nicm 345: return (NULL);
346: return (s);
347: }
348:
1.11 nicm 349: return (cmd_newest_session(&sessions));
1.5 nicm 350: }
351:
352: /* Find the newest session. */
353: struct session *
1.11 nicm 354: cmd_newest_session(struct sessions *ss)
1.5 nicm 355: {
356: struct session *s, *snewest;
357: struct timeval *tv = NULL;
358: u_int i;
359:
360: snewest = NULL;
1.11 nicm 361: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
362: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 363: continue;
364:
365: if (tv == NULL || timercmp(&s->tv, tv, >)) {
366: snewest = s;
1.1 nicm 367: tv = &s->tv;
368: }
369: }
1.5 nicm 370:
371: return (snewest);
1.1 nicm 372: }
373:
1.20 nicm 374: /* Find the newest client. */
375: struct client *
376: cmd_newest_client(void)
377: {
378: struct client *c, *cnewest;
379: struct timeval *tv = NULL;
380: u_int i;
381:
382: cnewest = NULL;
383: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
384: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
385: continue;
386: if (c->session == NULL)
387: continue;
388:
389: if (tv == NULL || timercmp(&c->tv, tv, >)) {
390: cnewest = c;
391: tv = &c->tv;
392: }
393: }
394:
395: return (cnewest);
396: }
397:
1.5 nicm 398: /* Find the target client or report an error and return NULL. */
1.1 nicm 399: struct client *
400: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
401: {
1.26 nicm 402: struct client *c, *lastc;
1.20 nicm 403: struct session *s;
1.5 nicm 404: char *tmparg;
405: size_t arglen;
1.20 nicm 406: u_int i;
1.1 nicm 407:
1.5 nicm 408: /* A NULL argument means the current client. */
1.20 nicm 409: if (arg == NULL) {
410: if (ctx->curclient != NULL)
411: return (ctx->curclient);
412: /*
413: * No current client set. Find the current session and see if
1.22 nicm 414: * it has only one client.
1.20 nicm 415: */
416: s = cmd_current_session(ctx);
417: if (s != NULL) {
1.26 nicm 418: lastc = NULL;
1.20 nicm 419: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.26 nicm 420: c = ARRAY_ITEM(&clients, i);
421: if (c != NULL && c->session == s) {
422: if (lastc != NULL)
1.20 nicm 423: break;
1.26 nicm 424: lastc = c;
1.20 nicm 425: }
426: }
1.26 nicm 427: if (i == ARRAY_LENGTH(&clients) && lastc != NULL)
428: return (lastc);
1.20 nicm 429: }
430: return (cmd_newest_client());
431: }
1.5 nicm 432: tmparg = xstrdup(arg);
433:
434: /* Trim a single trailing colon if any. */
435: arglen = strlen(tmparg);
436: if (arglen != 0 && tmparg[arglen - 1] == ':')
437: tmparg[arglen - 1] = '\0';
438:
439: /* Find the client, if any. */
440: c = cmd_lookup_client(tmparg);
441:
442: /* If no client found, report an error. */
443: if (c == NULL)
444: ctx->error(ctx, "client not found: %s", tmparg);
445:
446: xfree(tmparg);
447: return (c);
448: }
449:
450: /*
451: * Lookup a client by device path. Either of a full match and a match without a
452: * leading _PATH_DEV ("/dev/") is accepted.
453: */
454: struct client *
455: cmd_lookup_client(const char *name)
456: {
457: struct client *c;
458: const char *path;
459: u_int i;
460:
461: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25 nicm 462: c = ARRAY_ITEM(&clients, i);
463: if (c == NULL || c->session == NULL)
1.5 nicm 464: continue;
465: path = c->tty.path;
466:
467: /* Check for exact matches. */
468: if (strcmp(name, path) == 0)
469: return (c);
470:
471: /* Check without leading /dev if present. */
472: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
473: continue;
474: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
475: return (c);
476: }
477:
478: return (NULL);
479: }
480:
481: /* Lookup a session by name. If no session is found, NULL is returned. */
482: struct session *
483: cmd_lookup_session(const char *name, int *ambiguous)
484: {
485: struct session *s, *sfound;
486: u_int i;
487:
488: *ambiguous = 0;
489:
490: /*
491: * Look for matches. Session names must be unique so an exact match
492: * can't be ambigious and can just be returned.
493: */
494: sfound = NULL;
495: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
496: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
497: continue;
498:
499: /* Check for an exact match and return it if found. */
500: if (strcmp(name, s->name) == 0)
501: return (s);
502:
503: /* Then check for pattern matches. */
504: if (strncmp(name, s->name, strlen(name)) == 0 ||
505: fnmatch(name, s->name, 0) == 0) {
506: if (sfound != NULL) {
507: *ambiguous = 1;
508: return (NULL);
509: }
510: sfound = s;
511: }
512: }
513:
514: return (sfound);
515: }
516:
517: /*
1.8 nicm 518: * Lookup a window or return -1 if not found or ambigious. First try as an
519: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
520: * idx if the window index is a valid number but there is now window with that
521: * index.
1.5 nicm 522: */
523: struct winlink *
524: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
525: {
526: struct winlink *wl, *wlfound;
527: const char *errstr;
528: u_int idx;
529:
530: *ambiguous = 0;
531:
532: /* First see if this is a valid window index in this session. */
533: idx = strtonum(name, 0, INT_MAX, &errstr);
534: if (errstr == NULL) {
535: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
536: return (wl);
537: }
538:
539: /* Look for exact matches, error if more than one. */
540: wlfound = NULL;
541: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 542: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 543: if (wlfound != NULL) {
544: *ambiguous = 1;
545: return (NULL);
546: }
547: wlfound = wl;
1.1 nicm 548: }
549: }
1.5 nicm 550: if (wlfound != NULL)
551: return (wlfound);
552:
553: /* Now look for pattern matches, again error if multiple. */
554: wlfound = NULL;
555: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 556: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
557: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 558: if (wlfound != NULL) {
559: *ambiguous = 1;
560: return (NULL);
561: }
562: wlfound = wl;
563: }
564: }
565: if (wlfound != NULL)
566: return (wlfound);
567:
568: return (NULL);
1.1 nicm 569: }
570:
1.8 nicm 571: /*
572: * Find a window index - if the window doesn't exist, check if it is a
573: * potential index and return it anyway.
574: */
575: int
576: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
577: {
578: struct winlink *wl;
579: const char *errstr;
580: u_int idx;
581:
582: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
583: return (wl->idx);
584: if (*ambiguous)
585: return (-1);
586:
587: idx = strtonum(name, 0, INT_MAX, &errstr);
588: if (errstr == NULL)
589: return (idx);
590:
591: return (-1);
592: }
593:
1.5 nicm 594: /* Find the target session or report an error and return NULL. */
1.1 nicm 595: struct session *
596: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
597: {
598: struct session *s;
1.5 nicm 599: struct client *c;
600: char *tmparg;
601: size_t arglen;
602: int ambiguous;
1.1 nicm 603:
1.5 nicm 604: /* A NULL argument means the current session. */
1.1 nicm 605: if (arg == NULL)
1.5 nicm 606: return (cmd_current_session(ctx));
607: tmparg = xstrdup(arg);
608:
609: /* Trim a single trailing colon if any. */
610: arglen = strlen(tmparg);
611: if (arglen != 0 && tmparg[arglen - 1] == ':')
612: tmparg[arglen - 1] = '\0';
613:
614: /* Find the session, if any. */
615: s = cmd_lookup_session(tmparg, &ambiguous);
616:
617: /* If it doesn't, try to match it as a client. */
618: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
619: s = c->session;
620:
621: /* If no session found, report an error. */
622: if (s == NULL) {
623: if (ambiguous)
624: ctx->error(ctx, "more than one session: %s", tmparg);
625: else
626: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 627: }
1.5 nicm 628:
629: xfree(tmparg);
1.1 nicm 630: return (s);
631: }
632:
1.5 nicm 633: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 634: struct winlink *
635: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
636: {
637: struct session *s;
638: struct winlink *wl;
1.5 nicm 639: const char *winptr;
640: char *sessptr = NULL;
641: int ambiguous = 0;
642:
643: /*
644: * Find the current session. There must always be a current session, if
645: * it can't be found, report an error.
646: */
647: if ((s = cmd_current_session(ctx)) == NULL) {
648: ctx->error(ctx, "can't establish current session");
649: return (NULL);
650: }
651:
652: /* A NULL argument means the current session and window. */
653: if (arg == NULL) {
654: if (sp != NULL)
655: *sp = s;
656: return (s->curw);
657: }
658:
659: /* Time to look at the argument. If it is empty, that is an error. */
660: if (*arg == '\0')
661: goto not_found;
662:
1.8 nicm 663: /* Find the separating colon and split into window and session. */
1.5 nicm 664: winptr = strchr(arg, ':');
665: if (winptr == NULL)
1.8 nicm 666: goto no_colon;
667: winptr++; /* skip : */
668: sessptr = xstrdup(arg);
669: *strchr(sessptr, ':') = '\0';
1.5 nicm 670:
671: /* Try to lookup the session if present. */
1.8 nicm 672: if (*sessptr != '\0') {
673: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 674: goto no_session;
675: }
676: if (sp != NULL)
677: *sp = s;
678:
679: /*
680: * Then work out the window. An empty string is the current window,
681: * otherwise try to look it up in the session.
682: */
1.8 nicm 683: if (*winptr == '\0')
1.5 nicm 684: wl = s->curw;
685: else if ((wl = cmd_lookup_window(s, winptr, &ambiguous)) == NULL)
686: goto not_found;
687:
688: if (sessptr != NULL)
689: xfree(sessptr);
690: return (wl);
691:
1.8 nicm 692: no_colon:
693: /* No colon in the string, first try as a window then as a session. */
694: if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) {
695: if (ambiguous)
696: goto not_found;
697: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
698: goto no_session;
699: wl = s->curw;
700: }
701:
702: if (sp != NULL)
703: *sp = s;
704:
705: return (wl);
706:
1.5 nicm 707: no_session:
708: if (ambiguous)
1.8 nicm 709: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 710: else
1.8 nicm 711: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 712: if (sessptr != NULL)
713: xfree(sessptr);
714: return (NULL);
715:
716: not_found:
717: if (ambiguous)
718: ctx->error(ctx, "multiple windows: %s", arg);
719: else
720: ctx->error(ctx, "window not found: %s", arg);
721: if (sessptr != NULL)
722: xfree(sessptr);
723: return (NULL);
724: }
1.1 nicm 725:
1.5 nicm 726: /*
727: * Find the target session and window index, whether or not it exists in the
728: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 729: * used when parsing an argument for a window target that may not exist (for
730: * example if it is going to be created).
1.5 nicm 731: */
732: int
733: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
734: {
735: struct session *s;
1.8 nicm 736: const char *winptr;
1.5 nicm 737: char *sessptr = NULL;
738: int idx, ambiguous = 0;
739:
740: /*
741: * Find the current session. There must always be a current session, if
742: * it can't be found, report an error.
743: */
744: if ((s = cmd_current_session(ctx)) == NULL) {
745: ctx->error(ctx, "can't establish current session");
1.9 nicm 746: return (-2);
1.1 nicm 747: }
1.5 nicm 748:
749: /* A NULL argument means the current session and "no window" (-1). */
750: if (arg == NULL) {
751: if (sp != NULL)
752: *sp = s;
753: return (-1);
754: }
755:
756: /* Time to look at the argument. If it is empty, that is an error. */
757: if (*arg == '\0')
758: goto not_found;
759:
760: /* Find the separating colon. If none, assume the current session. */
761: winptr = strchr(arg, ':');
762: if (winptr == NULL)
1.8 nicm 763: goto no_colon;
764: winptr++; /* skip : */
765: sessptr = xstrdup(arg);
766: *strchr(sessptr, ':') = '\0';
1.5 nicm 767:
768: /* Try to lookup the session if present. */
769: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 770: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 771: goto no_session;
772: }
1.1 nicm 773: if (sp != NULL)
774: *sp = s;
775:
1.5 nicm 776: /*
1.8 nicm 777: * Then work out the window. An empty string is a new window otherwise
778: * try to look it up in the session.
1.5 nicm 779: */
1.8 nicm 780: if (*winptr == '\0')
781: idx = -1;
782: else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) {
1.5 nicm 783: if (ambiguous)
784: goto not_found;
1.8 nicm 785: ctx->error(ctx, "invalid index: %s", arg);
786: idx = -2;
787: }
1.5 nicm 788:
789: if (sessptr != NULL)
790: xfree(sessptr);
791: return (idx);
792:
1.8 nicm 793: no_colon:
794: /* No colon in the string, first try as a window then as a session. */
795: if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) {
796: if (ambiguous)
797: goto not_found;
798: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
799: goto no_session;
800: idx = -1;
801: }
802:
803: if (sp != NULL)
804: *sp = s;
805:
806: return (idx);
807:
1.5 nicm 808: no_session:
809: if (ambiguous)
1.8 nicm 810: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 811: else
1.8 nicm 812: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 813: if (sessptr != NULL)
814: xfree(sessptr);
815: return (-2);
816:
817: not_found:
818: if (ambiguous)
819: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 820: else
1.5 nicm 821: ctx->error(ctx, "window not found: %s", arg);
822: if (sessptr != NULL)
823: xfree(sessptr);
824: return (-2);
1.12 nicm 825: }
826:
827: /*
828: * Find the target session, window and pane number or report an error and
829: * return NULL. The pane number is separated from the session:window by a .,
830: * such as mysession:mywindow.0.
831: */
832: struct winlink *
833: cmd_find_pane(struct cmd_ctx *ctx,
834: const char *arg, struct session **sp, struct window_pane **wpp)
835: {
836: struct session *s;
837: struct winlink *wl;
838: const char *period;
839: char *winptr, *paneptr;
840: const char *errstr;
841: u_int idx;
842:
843: /* Get the current session. */
844: if ((s = cmd_current_session(ctx)) == NULL) {
1.27 ! deraadt 845: ctx->error(ctx, "can't establish current session");
1.12 nicm 846: return (NULL);
847: }
848: if (sp != NULL)
849: *sp = s;
850:
851: /* A NULL argument means the current session, window and pane. */
852: if (arg == NULL) {
853: *wpp = s->curw->window->active;
854: return (s->curw);
855: }
856:
857: /* Look for a separating period. */
858: if ((period = strrchr(arg, '.')) == NULL)
859: goto no_period;
860:
861: /* Pull out the window part and parse it. */
862: winptr = xstrdup(arg);
863: winptr[period - arg] = '\0';
864: if (*winptr == '\0')
865: wl = s->curw;
866: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
867: goto error;
868:
869: /* Find the pane section and look it up. */
870: paneptr = winptr + (period - arg) + 1;
871: if (*paneptr == '\0')
872: *wpp = wl->window->active;
873: else {
874: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
875: if (errstr != NULL) {
876: ctx->error(ctx, "pane %s: %s", errstr, paneptr);
877: goto error;
878: }
879: *wpp = window_pane_at_index(wl->window, idx);
880: if (*wpp == NULL) {
881: ctx->error(ctx, "no such pane: %u", idx);
882: goto error;
883: }
884: }
885:
886: xfree(winptr);
887: return (wl);
888:
889: no_period:
890: /* Try as a pane number alone. */
891: idx = strtonum(arg, 0, INT_MAX, &errstr);
892: if (errstr != NULL)
893: goto lookup_window;
894:
895: /* Try index in the current session and window. */
896: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
897: goto lookup_window;
898:
899: return (s->curw);
900:
901: lookup_window:
902: /* Try as a window and use the active pane. */
903: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
904: *wpp = wl->window->active;
905: return (wl);
906:
907: error:
908: xfree(winptr);
909: return (NULL);
1.15 nicm 910: }
911:
912: /* Replace the first %% or %idx in template by s. */
913: char *
914: cmd_template_replace(char *template, const char *s, int idx)
915: {
916: char ch;
917: char *buf, *ptr;
918: int replaced;
919: size_t len;
920:
921: if (strstr(template, "%") == NULL)
922: return (xstrdup(template));
923:
924: buf = xmalloc(1);
925: *buf = '\0';
926: len = 0;
927: replaced = 0;
928:
929: ptr = template;
930: while (*ptr != '\0') {
931: switch (ch = *ptr++) {
932: case '%':
933: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
934: if (*ptr != '%' || replaced)
935: break;
936: replaced = 1;
937: }
938: ptr++;
939:
940: len += strlen(s);
941: buf = xrealloc(buf, 1, len + 1);
942: strlcat(buf, s, len + 1);
943: continue;
944: }
945: buf = xrealloc(buf, 1, len + 2);
946: buf[len++] = ch;
947: buf[len] = '\0';
948: }
949:
950: return (buf);
1.1 nicm 951: }
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