Annotation of src/usr.bin/tmux/cmd.c, Revision 1.25
1.25 ! nicm 1: /* $OpenBSD: cmd.c,v 1.24 2009/10/11 10:04:27 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;
182: struct cmd *cmd;
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: {
402: struct client *c;
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) {
418: c = NULL;
419: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
420: if (ARRAY_ITEM(&clients, i)->session == s) {
421: if (c != NULL)
422: break;
423: c = ARRAY_ITEM(&clients, i);
424: }
425: }
426: if (i == ARRAY_LENGTH(&clients) && c != NULL)
427: return (c);
428: }
429: return (cmd_newest_client());
430: }
1.5 nicm 431: tmparg = xstrdup(arg);
432:
433: /* Trim a single trailing colon if any. */
434: arglen = strlen(tmparg);
435: if (arglen != 0 && tmparg[arglen - 1] == ':')
436: tmparg[arglen - 1] = '\0';
437:
438: /* Find the client, if any. */
439: c = cmd_lookup_client(tmparg);
440:
441: /* If no client found, report an error. */
442: if (c == NULL)
443: ctx->error(ctx, "client not found: %s", tmparg);
444:
445: xfree(tmparg);
446: return (c);
447: }
448:
449: /*
450: * Lookup a client by device path. Either of a full match and a match without a
451: * leading _PATH_DEV ("/dev/") is accepted.
452: */
453: struct client *
454: cmd_lookup_client(const char *name)
455: {
456: struct client *c;
457: const char *path;
458: u_int i;
459:
460: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25 ! nicm 461: c = ARRAY_ITEM(&clients, i);
! 462: if (c == NULL || c->session == NULL)
1.5 nicm 463: continue;
464: path = c->tty.path;
465:
466: /* Check for exact matches. */
467: if (strcmp(name, path) == 0)
468: return (c);
469:
470: /* Check without leading /dev if present. */
471: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
472: continue;
473: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
474: return (c);
475: }
476:
477: return (NULL);
478: }
479:
480: /* Lookup a session by name. If no session is found, NULL is returned. */
481: struct session *
482: cmd_lookup_session(const char *name, int *ambiguous)
483: {
484: struct session *s, *sfound;
485: u_int i;
486:
487: *ambiguous = 0;
488:
489: /*
490: * Look for matches. Session names must be unique so an exact match
491: * can't be ambigious and can just be returned.
492: */
493: sfound = NULL;
494: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
495: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
496: continue;
497:
498: /* Check for an exact match and return it if found. */
499: if (strcmp(name, s->name) == 0)
500: return (s);
501:
502: /* Then check for pattern matches. */
503: if (strncmp(name, s->name, strlen(name)) == 0 ||
504: fnmatch(name, s->name, 0) == 0) {
505: if (sfound != NULL) {
506: *ambiguous = 1;
507: return (NULL);
508: }
509: sfound = s;
510: }
511: }
512:
513: return (sfound);
514: }
515:
516: /*
1.8 nicm 517: * Lookup a window or return -1 if not found or ambigious. First try as an
518: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
519: * idx if the window index is a valid number but there is now window with that
520: * index.
1.5 nicm 521: */
522: struct winlink *
523: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
524: {
525: struct winlink *wl, *wlfound;
526: const char *errstr;
527: u_int idx;
528:
529: *ambiguous = 0;
530:
531: /* First see if this is a valid window index in this session. */
532: idx = strtonum(name, 0, INT_MAX, &errstr);
533: if (errstr == NULL) {
534: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
535: return (wl);
536: }
537:
538: /* Look for exact matches, error if more than one. */
539: wlfound = NULL;
540: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 541: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 542: if (wlfound != NULL) {
543: *ambiguous = 1;
544: return (NULL);
545: }
546: wlfound = wl;
1.1 nicm 547: }
548: }
1.5 nicm 549: if (wlfound != NULL)
550: return (wlfound);
551:
552: /* Now look for pattern matches, again error if multiple. */
553: wlfound = NULL;
554: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 555: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
556: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 557: if (wlfound != NULL) {
558: *ambiguous = 1;
559: return (NULL);
560: }
561: wlfound = wl;
562: }
563: }
564: if (wlfound != NULL)
565: return (wlfound);
566:
567: return (NULL);
1.1 nicm 568: }
569:
1.8 nicm 570: /*
571: * Find a window index - if the window doesn't exist, check if it is a
572: * potential index and return it anyway.
573: */
574: int
575: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
576: {
577: struct winlink *wl;
578: const char *errstr;
579: u_int idx;
580:
581: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
582: return (wl->idx);
583: if (*ambiguous)
584: return (-1);
585:
586: idx = strtonum(name, 0, INT_MAX, &errstr);
587: if (errstr == NULL)
588: return (idx);
589:
590: return (-1);
591: }
592:
1.5 nicm 593: /* Find the target session or report an error and return NULL. */
1.1 nicm 594: struct session *
595: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
596: {
597: struct session *s;
1.5 nicm 598: struct client *c;
599: char *tmparg;
600: size_t arglen;
601: int ambiguous;
1.1 nicm 602:
1.5 nicm 603: /* A NULL argument means the current session. */
1.1 nicm 604: if (arg == NULL)
1.5 nicm 605: return (cmd_current_session(ctx));
606: tmparg = xstrdup(arg);
607:
608: /* Trim a single trailing colon if any. */
609: arglen = strlen(tmparg);
610: if (arglen != 0 && tmparg[arglen - 1] == ':')
611: tmparg[arglen - 1] = '\0';
612:
613: /* Find the session, if any. */
614: s = cmd_lookup_session(tmparg, &ambiguous);
615:
616: /* If it doesn't, try to match it as a client. */
617: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
618: s = c->session;
619:
620: /* If no session found, report an error. */
621: if (s == NULL) {
622: if (ambiguous)
623: ctx->error(ctx, "more than one session: %s", tmparg);
624: else
625: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 626: }
1.5 nicm 627:
628: xfree(tmparg);
1.1 nicm 629: return (s);
630: }
631:
1.5 nicm 632: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 633: struct winlink *
634: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
635: {
636: struct session *s;
637: struct winlink *wl;
1.5 nicm 638: const char *winptr;
639: char *sessptr = NULL;
640: int ambiguous = 0;
641:
642: /*
643: * Find the current session. There must always be a current session, if
644: * it can't be found, report an error.
645: */
646: if ((s = cmd_current_session(ctx)) == NULL) {
647: ctx->error(ctx, "can't establish current session");
648: return (NULL);
649: }
650:
651: /* A NULL argument means the current session and window. */
652: if (arg == NULL) {
653: if (sp != NULL)
654: *sp = s;
655: return (s->curw);
656: }
657:
658: /* Time to look at the argument. If it is empty, that is an error. */
659: if (*arg == '\0')
660: goto not_found;
661:
1.8 nicm 662: /* Find the separating colon and split into window and session. */
1.5 nicm 663: winptr = strchr(arg, ':');
664: if (winptr == NULL)
1.8 nicm 665: goto no_colon;
666: winptr++; /* skip : */
667: sessptr = xstrdup(arg);
668: *strchr(sessptr, ':') = '\0';
1.5 nicm 669:
670: /* Try to lookup the session if present. */
1.8 nicm 671: if (*sessptr != '\0') {
672: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 673: goto no_session;
674: }
675: if (sp != NULL)
676: *sp = s;
677:
678: /*
679: * Then work out the window. An empty string is the current window,
680: * otherwise try to look it up in the session.
681: */
1.8 nicm 682: if (*winptr == '\0')
1.5 nicm 683: wl = s->curw;
684: else if ((wl = cmd_lookup_window(s, winptr, &ambiguous)) == NULL)
685: goto not_found;
686:
687: if (sessptr != NULL)
688: xfree(sessptr);
689: return (wl);
690:
1.8 nicm 691: no_colon:
692: /* No colon in the string, first try as a window then as a session. */
693: if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) {
694: if (ambiguous)
695: goto not_found;
696: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
697: goto no_session;
698: wl = s->curw;
699: }
700:
701: if (sp != NULL)
702: *sp = s;
703:
704: return (wl);
705:
1.5 nicm 706: no_session:
707: if (ambiguous)
1.8 nicm 708: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 709: else
1.8 nicm 710: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 711: if (sessptr != NULL)
712: xfree(sessptr);
713: return (NULL);
714:
715: not_found:
716: if (ambiguous)
717: ctx->error(ctx, "multiple windows: %s", arg);
718: else
719: ctx->error(ctx, "window not found: %s", arg);
720: if (sessptr != NULL)
721: xfree(sessptr);
722: return (NULL);
723: }
1.1 nicm 724:
1.5 nicm 725: /*
726: * Find the target session and window index, whether or not it exists in the
727: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 728: * used when parsing an argument for a window target that may not exist (for
729: * example if it is going to be created).
1.5 nicm 730: */
731: int
732: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
733: {
734: struct session *s;
1.8 nicm 735: const char *winptr;
1.5 nicm 736: char *sessptr = NULL;
737: int idx, ambiguous = 0;
738:
739: /*
740: * Find the current session. There must always be a current session, if
741: * it can't be found, report an error.
742: */
743: if ((s = cmd_current_session(ctx)) == NULL) {
744: ctx->error(ctx, "can't establish current session");
1.9 nicm 745: return (-2);
1.1 nicm 746: }
1.5 nicm 747:
748: /* A NULL argument means the current session and "no window" (-1). */
749: if (arg == NULL) {
750: if (sp != NULL)
751: *sp = s;
752: return (-1);
753: }
754:
755: /* Time to look at the argument. If it is empty, that is an error. */
756: if (*arg == '\0')
757: goto not_found;
758:
759: /* Find the separating colon. If none, assume the current session. */
760: winptr = strchr(arg, ':');
761: if (winptr == NULL)
1.8 nicm 762: goto no_colon;
763: winptr++; /* skip : */
764: sessptr = xstrdup(arg);
765: *strchr(sessptr, ':') = '\0';
1.5 nicm 766:
767: /* Try to lookup the session if present. */
768: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 769: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 770: goto no_session;
771: }
1.1 nicm 772: if (sp != NULL)
773: *sp = s;
774:
1.5 nicm 775: /*
1.8 nicm 776: * Then work out the window. An empty string is a new window otherwise
777: * try to look it up in the session.
1.5 nicm 778: */
1.8 nicm 779: if (*winptr == '\0')
780: idx = -1;
781: else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) {
1.5 nicm 782: if (ambiguous)
783: goto not_found;
1.8 nicm 784: ctx->error(ctx, "invalid index: %s", arg);
785: idx = -2;
786: }
1.5 nicm 787:
788: if (sessptr != NULL)
789: xfree(sessptr);
790: return (idx);
791:
1.8 nicm 792: no_colon:
793: /* No colon in the string, first try as a window then as a session. */
794: if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) {
795: if (ambiguous)
796: goto not_found;
797: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
798: goto no_session;
799: idx = -1;
800: }
801:
802: if (sp != NULL)
803: *sp = s;
804:
805: return (idx);
806:
1.5 nicm 807: no_session:
808: if (ambiguous)
1.8 nicm 809: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 810: else
1.8 nicm 811: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 812: if (sessptr != NULL)
813: xfree(sessptr);
814: return (-2);
815:
816: not_found:
817: if (ambiguous)
818: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 819: else
1.5 nicm 820: ctx->error(ctx, "window not found: %s", arg);
821: if (sessptr != NULL)
822: xfree(sessptr);
823: return (-2);
1.12 nicm 824: }
825:
826: /*
827: * Find the target session, window and pane number or report an error and
828: * return NULL. The pane number is separated from the session:window by a .,
829: * such as mysession:mywindow.0.
830: */
831: struct winlink *
832: cmd_find_pane(struct cmd_ctx *ctx,
833: const char *arg, struct session **sp, struct window_pane **wpp)
834: {
835: struct session *s;
836: struct winlink *wl;
837: const char *period;
838: char *winptr, *paneptr;
839: const char *errstr;
840: u_int idx;
841:
842: /* Get the current session. */
843: if ((s = cmd_current_session(ctx)) == NULL) {
844: ctx->error(ctx, "can't establish current session");
845: return (NULL);
846: }
847: if (sp != NULL)
848: *sp = s;
849:
850: /* A NULL argument means the current session, window and pane. */
851: if (arg == NULL) {
852: *wpp = s->curw->window->active;
853: return (s->curw);
854: }
855:
856: /* Look for a separating period. */
857: if ((period = strrchr(arg, '.')) == NULL)
858: goto no_period;
859:
860: /* Pull out the window part and parse it. */
861: winptr = xstrdup(arg);
862: winptr[period - arg] = '\0';
863: if (*winptr == '\0')
864: wl = s->curw;
865: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
866: goto error;
867:
868: /* Find the pane section and look it up. */
869: paneptr = winptr + (period - arg) + 1;
870: if (*paneptr == '\0')
871: *wpp = wl->window->active;
872: else {
873: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
874: if (errstr != NULL) {
875: ctx->error(ctx, "pane %s: %s", errstr, paneptr);
876: goto error;
877: }
878: *wpp = window_pane_at_index(wl->window, idx);
879: if (*wpp == NULL) {
880: ctx->error(ctx, "no such pane: %u", idx);
881: goto error;
882: }
883: }
884:
885: xfree(winptr);
886: return (wl);
887:
888: no_period:
889: /* Try as a pane number alone. */
890: idx = strtonum(arg, 0, INT_MAX, &errstr);
891: if (errstr != NULL)
892: goto lookup_window;
893:
894: /* Try index in the current session and window. */
895: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
896: goto lookup_window;
897:
898: return (s->curw);
899:
900: lookup_window:
901: /* Try as a window and use the active pane. */
902: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
903: *wpp = wl->window->active;
904: return (wl);
905:
906: error:
907: xfree(winptr);
908: return (NULL);
1.15 nicm 909: }
910:
911: /* Replace the first %% or %idx in template by s. */
912: char *
913: cmd_template_replace(char *template, const char *s, int idx)
914: {
915: char ch;
916: char *buf, *ptr;
917: int replaced;
918: size_t len;
919:
920: if (strstr(template, "%") == NULL)
921: return (xstrdup(template));
922:
923: buf = xmalloc(1);
924: *buf = '\0';
925: len = 0;
926: replaced = 0;
927:
928: ptr = template;
929: while (*ptr != '\0') {
930: switch (ch = *ptr++) {
931: case '%':
932: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
933: if (*ptr != '%' || replaced)
934: break;
935: replaced = 1;
936: }
937: ptr++;
938:
939: len += strlen(s);
940: buf = xrealloc(buf, 1, len + 1);
941: strlcat(buf, s, len + 1);
942: continue;
943: }
944: buf = xrealloc(buf, 1, len + 2);
945: buf[len++] = ch;
946: buf[len] = '\0';
947: }
948:
949: return (buf);
1.1 nicm 950: }
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