Annotation of src/usr.bin/tmux/cmd.c, Revision 1.50
1.50 ! nicm 1: /* $OpenBSD: cmd.c,v 1.49 2011/01/04 00:42:47 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_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_find_window_entry,
49: &cmd_has_session_entry,
1.4 nicm 50: &cmd_if_shell_entry,
1.37 nicm 51: &cmd_join_pane_entry,
1.1 nicm 52: &cmd_kill_pane_entry,
53: &cmd_kill_server_entry,
54: &cmd_kill_session_entry,
55: &cmd_kill_window_entry,
1.45 nicm 56: &cmd_last_pane_entry,
1.1 nicm 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:
1.47 nicm 114: struct session *cmd_choose_session_list(struct sessionslist *);
115: struct session *cmd_choose_session(void);
1.31 nicm 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 *);
1.43 nicm 121: struct winlink *cmd_find_window_offset(const char *, struct session *, int *);
122: int cmd_find_index_offset(const char *, struct session *, int *);
123: struct window_pane *cmd_find_pane_offset(const char *, struct winlink *);
1.5 nicm 124:
1.10 nicm 125: int
126: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
127: {
128: size_t arglen;
129: int i;
130:
131: *buf = '\0';
132: for (i = 0; i < argc; i++) {
133: if (strlcpy(buf, argv[i], len) >= len)
134: return (-1);
135: arglen = strlen(argv[i]) + 1;
136: buf += arglen;
137: len -= arglen;
138: }
139:
140: return (0);
141: }
142:
143: int
144: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
145: {
146: int i;
147: size_t arglen;
148:
149: if (argc == 0)
150: return (0);
151: *argv = xcalloc(argc, sizeof **argv);
152:
153: buf[len - 1] = '\0';
154: for (i = 0; i < argc; i++) {
155: if (len == 0) {
156: cmd_free_argv(argc, *argv);
157: return (-1);
158: }
159:
160: arglen = strlen(buf) + 1;
161: (*argv)[i] = xstrdup(buf);
162: buf += arglen;
163: len -= arglen;
164: }
165:
166: return (0);
1.46 nicm 167: }
168:
169: char **
1.49 nicm 170: cmd_copy_argv(int argc, char *const *argv)
1.46 nicm 171: {
172: char **new_argv;
173: int i;
174:
175: if (argc == 0)
176: return (NULL);
177: new_argv = xcalloc(argc, sizeof *new_argv);
178: for (i = 0; i < argc; i++) {
179: if (argv[i] != NULL)
180: new_argv[i] = xstrdup(argv[i]);
181: }
182: return (new_argv);
1.10 nicm 183: }
184:
185: void
186: cmd_free_argv(int argc, char **argv)
187: {
188: int i;
189:
190: if (argc == 0)
1.35 nicm 191: return;
1.10 nicm 192: for (i = 0; i < argc; i++) {
193: if (argv[i] != NULL)
194: xfree(argv[i]);
195: }
196: xfree(argv);
197: }
198:
1.1 nicm 199: struct cmd *
200: cmd_parse(int argc, char **argv, char **cause)
201: {
202: const struct cmd_entry **entryp, *entry;
1.27 deraadt 203: struct cmd *cmd;
1.49 nicm 204: struct args *args;
1.1 nicm 205: char s[BUFSIZ];
1.49 nicm 206: int ambiguous = 0;
1.1 nicm 207:
208: *cause = NULL;
1.2 nicm 209: if (argc == 0) {
210: xasprintf(cause, "no command");
1.1 nicm 211: return (NULL);
1.2 nicm 212: }
1.1 nicm 213:
214: entry = NULL;
215: for (entryp = cmd_table; *entryp != NULL; entryp++) {
216: if ((*entryp)->alias != NULL &&
217: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 218: ambiguous = 0;
1.1 nicm 219: entry = *entryp;
220: break;
221: }
222:
223: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
224: continue;
225: if (entry != NULL)
1.3 nicm 226: ambiguous = 1;
1.1 nicm 227: entry = *entryp;
228:
229: /* Bail now if an exact match. */
230: if (strcmp(entry->name, argv[0]) == 0)
231: break;
232: }
1.3 nicm 233: if (ambiguous)
234: goto ambiguous;
1.1 nicm 235: if (entry == NULL) {
236: xasprintf(cause, "unknown command: %s", argv[0]);
237: return (NULL);
238: }
239:
1.49 nicm 240: args = args_parse(entry->args_template, argc, argv);
241: if (args == NULL)
242: goto usage;
243: if (entry->args_lower != -1 && args->argc < entry->args_lower)
244: goto usage;
245: if (entry->args_upper != -1 && args->argc > entry->args_upper)
246: goto usage;
247: if (entry->check != NULL && entry->check(args) != 0)
248: goto usage;
1.1 nicm 249:
250: cmd = xmalloc(sizeof *cmd);
251: cmd->entry = entry;
1.49 nicm 252: cmd->args = args;
1.1 nicm 253: return (cmd);
254:
255: ambiguous:
256: *s = '\0';
257: for (entryp = cmd_table; *entryp != NULL; entryp++) {
258: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
259: continue;
260: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
261: break;
262: if (strlcat(s, ", ", sizeof s) >= sizeof s)
263: break;
264: }
265: s[strlen(s) - 2] = '\0';
266: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
267: return (NULL);
268:
269: usage:
1.49 nicm 270: if (args != NULL)
271: args_free(args);
1.1 nicm 272: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
273: return (NULL);
274: }
275:
276: int
277: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
278: {
279: return (cmd->entry->exec(cmd, ctx));
280: }
281:
282: void
283: cmd_free(struct cmd *cmd)
284: {
1.49 nicm 285: if (cmd->args != NULL)
286: args_free(cmd->args);
1.1 nicm 287: xfree(cmd);
288: }
289:
290: size_t
291: cmd_print(struct cmd *cmd, char *buf, size_t len)
292: {
1.49 nicm 293: size_t off, used;
294:
295: off = xsnprintf(buf, len, "%s ", cmd->entry->name);
296: if (off < len) {
297: used = args_print(cmd->args, buf + off, len - off);
298: if (used == 0)
299: buf[off - 1] = '\0';
300: else {
301: off += used;
302: buf[off] = '\0';
303: }
304: }
305: return (off);
1.1 nicm 306: }
307:
1.5 nicm 308: /*
309: * Figure out the current session. Use: 1) the current session, if the command
1.31 nicm 310: * context has one; 2) the most recently used session containing the pty of the
311: * calling client, if any; 3) the session specified in the TMUX variable from
312: * the environment (as passed from the client); 4) the most recently used
313: * session from all sessions.
1.5 nicm 314: */
1.1 nicm 315: struct session *
316: cmd_current_session(struct cmd_ctx *ctx)
317: {
318: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 319: struct client *c = ctx->cmdclient;
1.5 nicm 320: struct session *s;
1.47 nicm 321: struct sessionslist ss;
1.11 nicm 322: struct winlink *wl;
323: struct window_pane *wp;
324: int found;
1.1 nicm 325:
1.14 nicm 326: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
327: return (ctx->curclient->session);
1.1 nicm 328:
1.11 nicm 329: /*
330: * If the name of the calling client's pty is know, build a list of the
331: * sessions that contain it and if any choose either the first or the
332: * newest.
333: */
334: if (c != NULL && c->tty.path != NULL) {
335: ARRAY_INIT(&ss);
1.47 nicm 336: RB_FOREACH(s, sessions, &sessions) {
1.11 nicm 337: found = 0;
338: RB_FOREACH(wl, winlinks, &s->windows) {
339: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
340: if (strcmp(wp->tty, c->tty.path) == 0) {
341: found = 1;
342: break;
343: }
344: }
345: if (found)
346: break;
347: }
348: if (found)
349: ARRAY_ADD(&ss, s);
350: }
351:
1.47 nicm 352: s = cmd_choose_session_list(&ss);
1.11 nicm 353: ARRAY_FREE(&ss);
354: if (s != NULL)
355: return (s);
356: }
357:
358: /* Use the session from the TMUX environment variable. */
1.50 ! nicm 359: if (data != NULL && data->pid == getpid() && data->idx != -1) {
1.47 nicm 360: s = session_find_by_index(data->idx);
361: if (s != NULL)
362: return (s);
363: }
364:
365: return (cmd_choose_session());
366: }
367:
368: /* Find the most recently used session. */
369: struct session *
370: cmd_choose_session(void)
371: {
372: struct session *s, *sbest;
373: struct timeval *tv = NULL;
374:
375: sbest = NULL;
376: RB_FOREACH(s, sessions, &sessions) {
377: if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
378: sbest = s;
379: tv = &s->activity_time;
380: }
381: }
1.1 nicm 382:
1.47 nicm 383: return (sbest);
1.5 nicm 384: }
385:
1.31 nicm 386: /* Find the most recently used session from a list. */
1.5 nicm 387: struct session *
1.47 nicm 388: cmd_choose_session_list(struct sessionslist *ss)
1.5 nicm 389: {
1.31 nicm 390: struct session *s, *sbest;
1.5 nicm 391: struct timeval *tv = NULL;
392: u_int i;
393:
1.31 nicm 394: sbest = NULL;
1.11 nicm 395: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
396: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 397: continue;
398:
1.31 nicm 399: if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
400: sbest = s;
401: tv = &s->activity_time;
1.1 nicm 402: }
403: }
1.5 nicm 404:
1.31 nicm 405: return (sbest);
1.1 nicm 406: }
407:
1.30 nicm 408: /*
409: * Find the current client. First try the current client if set, then pick the
1.31 nicm 410: * most recently used of the clients attached to the current session if any,
411: * then of all clients.
1.30 nicm 412: */
413: struct client *
414: cmd_current_client(struct cmd_ctx *ctx)
415: {
416: struct session *s;
417: struct client *c;
418: struct clients cc;
419: u_int i;
420:
421: if (ctx->curclient != NULL)
422: return (ctx->curclient);
423:
424: /*
425: * No current client set. Find the current session and return the
426: * newest of its clients.
427: */
428: s = cmd_current_session(ctx);
429: if (s != NULL && !(s->flags & SESSION_UNATTACHED)) {
430: ARRAY_INIT(&cc);
431: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
432: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
433: continue;
434: if (s == c->session)
435: ARRAY_ADD(&cc, c);
436: }
437:
1.31 nicm 438: c = cmd_choose_client(&cc);
1.30 nicm 439: ARRAY_FREE(&cc);
440: if (c != NULL)
441: return (c);
442: }
443:
1.31 nicm 444: return (cmd_choose_client(&clients));
1.30 nicm 445: }
446:
1.31 nicm 447: /* Choose the most recently used client from a list. */
1.20 nicm 448: struct client *
1.31 nicm 449: cmd_choose_client(struct clients *cc)
1.20 nicm 450: {
1.31 nicm 451: struct client *c, *cbest;
1.20 nicm 452: struct timeval *tv = NULL;
453: u_int i;
454:
1.31 nicm 455: cbest = NULL;
1.30 nicm 456: for (i = 0; i < ARRAY_LENGTH(cc); i++) {
457: if ((c = ARRAY_ITEM(cc, i)) == NULL)
1.20 nicm 458: continue;
459: if (c->session == NULL)
460: continue;
461:
1.31 nicm 462: if (tv == NULL || timercmp(&c->activity_time, tv, >)) {
463: cbest = c;
464: tv = &c->activity_time;
1.20 nicm 465: }
466: }
467:
1.31 nicm 468: return (cbest);
1.20 nicm 469: }
470:
1.5 nicm 471: /* Find the target client or report an error and return NULL. */
1.1 nicm 472: struct client *
473: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
474: {
1.30 nicm 475: struct client *c;
1.5 nicm 476: char *tmparg;
477: size_t arglen;
1.1 nicm 478:
1.5 nicm 479: /* A NULL argument means the current client. */
1.30 nicm 480: if (arg == NULL)
481: return (cmd_current_client(ctx));
1.5 nicm 482: tmparg = xstrdup(arg);
483:
484: /* Trim a single trailing colon if any. */
485: arglen = strlen(tmparg);
486: if (arglen != 0 && tmparg[arglen - 1] == ':')
487: tmparg[arglen - 1] = '\0';
488:
489: /* Find the client, if any. */
490: c = cmd_lookup_client(tmparg);
491:
492: /* If no client found, report an error. */
493: if (c == NULL)
494: ctx->error(ctx, "client not found: %s", tmparg);
495:
496: xfree(tmparg);
497: return (c);
498: }
499:
500: /*
501: * Lookup a client by device path. Either of a full match and a match without a
502: * leading _PATH_DEV ("/dev/") is accepted.
503: */
504: struct client *
505: cmd_lookup_client(const char *name)
506: {
507: struct client *c;
508: const char *path;
509: u_int i;
510:
511: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25 nicm 512: c = ARRAY_ITEM(&clients, i);
513: if (c == NULL || c->session == NULL)
1.5 nicm 514: continue;
515: path = c->tty.path;
516:
517: /* Check for exact matches. */
518: if (strcmp(name, path) == 0)
519: return (c);
520:
521: /* Check without leading /dev if present. */
522: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
523: continue;
524: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
525: return (c);
526: }
527:
528: return (NULL);
529: }
530:
531: /* Lookup a session by name. If no session is found, NULL is returned. */
532: struct session *
533: cmd_lookup_session(const char *name, int *ambiguous)
534: {
535: struct session *s, *sfound;
536:
537: *ambiguous = 0;
538:
539: /*
1.28 nicm 540: * Look for matches. First look for exact matches - session names must
541: * be unique so an exact match can't be ambigious and can just be
542: * returned.
1.5 nicm 543: */
1.47 nicm 544: if ((s = session_find(name)) != NULL)
545: return (s);
1.28 nicm 546:
547: /*
548: * Otherwise look for partial matches, returning early if it is found to
549: * be ambiguous.
550: */
551: sfound = NULL;
1.47 nicm 552: RB_FOREACH(s, sessions, &sessions) {
1.5 nicm 553: if (strncmp(name, s->name, strlen(name)) == 0 ||
554: fnmatch(name, s->name, 0) == 0) {
555: if (sfound != NULL) {
556: *ambiguous = 1;
557: return (NULL);
558: }
559: sfound = s;
560: }
561: }
1.35 nicm 562: return (sfound);
1.5 nicm 563: }
564:
565: /*
1.8 nicm 566: * Lookup a window or return -1 if not found or ambigious. First try as an
567: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
1.41 nicm 568: * idx if the window index is a valid number but there is no window with that
1.8 nicm 569: * index.
1.5 nicm 570: */
571: struct winlink *
572: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
573: {
574: struct winlink *wl, *wlfound;
575: const char *errstr;
576: u_int idx;
577:
578: *ambiguous = 0;
579:
580: /* First see if this is a valid window index in this session. */
581: idx = strtonum(name, 0, INT_MAX, &errstr);
582: if (errstr == NULL) {
583: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
584: return (wl);
585: }
1.35 nicm 586:
1.5 nicm 587: /* Look for exact matches, error if more than one. */
588: wlfound = NULL;
589: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 590: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 591: if (wlfound != NULL) {
592: *ambiguous = 1;
593: return (NULL);
594: }
595: wlfound = wl;
1.1 nicm 596: }
597: }
1.5 nicm 598: if (wlfound != NULL)
599: return (wlfound);
600:
601: /* Now look for pattern matches, again error if multiple. */
602: wlfound = NULL;
603: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 604: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
605: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 606: if (wlfound != NULL) {
607: *ambiguous = 1;
608: return (NULL);
609: }
610: wlfound = wl;
611: }
1.35 nicm 612: }
1.5 nicm 613: if (wlfound != NULL)
614: return (wlfound);
615:
616: return (NULL);
1.1 nicm 617: }
618:
1.8 nicm 619: /*
620: * Find a window index - if the window doesn't exist, check if it is a
621: * potential index and return it anyway.
622: */
623: int
624: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
625: {
626: struct winlink *wl;
627: const char *errstr;
628: u_int idx;
629:
630: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
631: return (wl->idx);
632: if (*ambiguous)
633: return (-1);
634:
635: idx = strtonum(name, 0, INT_MAX, &errstr);
636: if (errstr == NULL)
637: return (idx);
638:
639: return (-1);
640: }
641:
1.5 nicm 642: /* Find the target session or report an error and return NULL. */
1.1 nicm 643: struct session *
644: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
645: {
646: struct session *s;
1.5 nicm 647: struct client *c;
648: char *tmparg;
649: size_t arglen;
650: int ambiguous;
1.1 nicm 651:
1.5 nicm 652: /* A NULL argument means the current session. */
1.1 nicm 653: if (arg == NULL)
1.5 nicm 654: return (cmd_current_session(ctx));
655: tmparg = xstrdup(arg);
656:
657: /* Trim a single trailing colon if any. */
658: arglen = strlen(tmparg);
659: if (arglen != 0 && tmparg[arglen - 1] == ':')
660: tmparg[arglen - 1] = '\0';
661:
662: /* Find the session, if any. */
663: s = cmd_lookup_session(tmparg, &ambiguous);
664:
665: /* If it doesn't, try to match it as a client. */
666: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
667: s = c->session;
668:
669: /* If no session found, report an error. */
670: if (s == NULL) {
671: if (ambiguous)
672: ctx->error(ctx, "more than one session: %s", tmparg);
673: else
674: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 675: }
1.5 nicm 676:
677: xfree(tmparg);
1.1 nicm 678: return (s);
679: }
680:
1.5 nicm 681: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 682: struct winlink *
683: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
684: {
685: struct session *s;
686: struct winlink *wl;
1.5 nicm 687: const char *winptr;
688: char *sessptr = NULL;
689: int ambiguous = 0;
690:
691: /*
692: * Find the current session. There must always be a current session, if
693: * it can't be found, report an error.
694: */
695: if ((s = cmd_current_session(ctx)) == NULL) {
696: ctx->error(ctx, "can't establish current session");
697: return (NULL);
698: }
699:
700: /* A NULL argument means the current session and window. */
701: if (arg == NULL) {
702: if (sp != NULL)
703: *sp = s;
704: return (s->curw);
705: }
706:
707: /* Time to look at the argument. If it is empty, that is an error. */
708: if (*arg == '\0')
709: goto not_found;
710:
1.8 nicm 711: /* Find the separating colon and split into window and session. */
1.5 nicm 712: winptr = strchr(arg, ':');
713: if (winptr == NULL)
1.8 nicm 714: goto no_colon;
715: winptr++; /* skip : */
716: sessptr = xstrdup(arg);
717: *strchr(sessptr, ':') = '\0';
1.5 nicm 718:
719: /* Try to lookup the session if present. */
1.8 nicm 720: if (*sessptr != '\0') {
721: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 722: goto no_session;
723: }
724: if (sp != NULL)
725: *sp = s;
726:
727: /*
728: * Then work out the window. An empty string is the current window,
1.38 nicm 729: * otherwise try special cases then to look it up in the session.
1.5 nicm 730: */
1.8 nicm 731: if (*winptr == '\0')
1.5 nicm 732: wl = s->curw;
1.38 nicm 733: else if (winptr[0] == '!' && winptr[1] == '\0')
734: wl = TAILQ_FIRST(&s->lastw);
1.43 nicm 735: else if (winptr[0] == '+' || winptr[0] == '-')
736: wl = cmd_find_window_offset(winptr, s, &ambiguous);
737: else
1.38 nicm 738: wl = cmd_lookup_window(s, winptr, &ambiguous);
739: if (wl == NULL)
1.5 nicm 740: goto not_found;
1.35 nicm 741:
1.5 nicm 742: if (sessptr != NULL)
743: xfree(sessptr);
744: return (wl);
745:
1.8 nicm 746: no_colon:
1.38 nicm 747: /*
748: * No colon in the string, first try special cases, then as a window
749: * and lastly as a session.
750: */
751: if (arg[0] == '!' && arg[1] == '\0') {
752: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
753: goto not_found;
1.41 nicm 754: } else if (arg[0] == '+' || arg[0] == '-') {
1.43 nicm 755: if ((wl = cmd_find_window_offset(arg, s, &ambiguous)) == NULL)
1.41 nicm 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:
1.43 nicm 795: struct winlink *
796: cmd_find_window_offset(const char *winptr, struct session *s, int *ambiguous)
797: {
798: struct winlink *wl;
799: int offset = 1;
800:
801: if (winptr[1] != '\0')
802: offset = strtonum(winptr + 1, 1, INT_MAX, NULL);
803: if (offset == 0)
804: wl = cmd_lookup_window(s, winptr, ambiguous);
805: else {
806: if (winptr[0] == '+')
807: wl = winlink_next_by_number(s->curw, s, offset);
808: else
809: wl = winlink_previous_by_number(s->curw, s, offset);
810: }
811:
812: return (wl);
813: }
814:
1.5 nicm 815: /*
816: * Find the target session and window index, whether or not it exists in the
817: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 818: * used when parsing an argument for a window target that may not exist (for
819: * example if it is going to be created).
1.5 nicm 820: */
821: int
822: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
823: {
824: struct session *s;
1.38 nicm 825: struct winlink *wl;
1.8 nicm 826: const char *winptr;
1.5 nicm 827: char *sessptr = NULL;
828: int idx, ambiguous = 0;
829:
830: /*
831: * Find the current session. There must always be a current session, if
832: * it can't be found, report an error.
833: */
834: if ((s = cmd_current_session(ctx)) == NULL) {
835: ctx->error(ctx, "can't establish current session");
1.9 nicm 836: return (-2);
1.1 nicm 837: }
1.5 nicm 838:
839: /* A NULL argument means the current session and "no window" (-1). */
840: if (arg == NULL) {
841: if (sp != NULL)
842: *sp = s;
843: return (-1);
844: }
845:
846: /* Time to look at the argument. If it is empty, that is an error. */
847: if (*arg == '\0')
848: goto not_found;
849:
850: /* Find the separating colon. If none, assume the current session. */
851: winptr = strchr(arg, ':');
852: if (winptr == NULL)
1.8 nicm 853: goto no_colon;
854: winptr++; /* skip : */
855: sessptr = xstrdup(arg);
856: *strchr(sessptr, ':') = '\0';
1.5 nicm 857:
858: /* Try to lookup the session if present. */
859: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 860: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 861: goto no_session;
862: }
1.1 nicm 863: if (sp != NULL)
864: *sp = s;
865:
1.5 nicm 866: /*
1.8 nicm 867: * Then work out the window. An empty string is a new window otherwise
868: * try to look it up in the session.
1.5 nicm 869: */
1.8 nicm 870: if (*winptr == '\0')
1.38 nicm 871: idx = -1;
872: else if (winptr[0] == '!' && winptr[1] == '\0') {
873: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
874: goto not_found;
875: idx = wl->idx;
1.41 nicm 876: } else if (winptr[0] == '+' || winptr[0] == '-') {
1.43 nicm 877: if ((idx = cmd_find_index_offset(winptr, s, &ambiguous)) < 0)
1.41 nicm 878: goto invalid_index;
879: } else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1)
880: goto invalid_index;
1.35 nicm 881:
1.5 nicm 882: if (sessptr != NULL)
883: xfree(sessptr);
884: return (idx);
885:
1.8 nicm 886: no_colon:
1.38 nicm 887: /*
888: * No colon in the string, first try special cases, then as a window
889: * and lastly as a session.
890: */
891: if (arg[0] == '!' && arg[1] == '\0') {
892: if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
893: goto not_found;
894: idx = wl->idx;
1.41 nicm 895: } else if (arg[0] == '+' || arg[0] == '-') {
1.43 nicm 896: if ((idx = cmd_find_index_offset(arg, s, &ambiguous)) < 0)
1.41 nicm 897: goto lookup_session;
898: } else if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1)
899: goto lookup_session;
1.8 nicm 900:
901: if (sp != NULL)
902: *sp = s;
903:
904: return (idx);
905:
1.41 nicm 906: lookup_session:
907: if (ambiguous)
908: goto not_found;
909: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
910: goto no_session;
911:
912: if (sp != NULL)
913: *sp = s;
914:
915: return (-1);
916:
1.5 nicm 917: no_session:
918: if (ambiguous)
1.35 nicm 919: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 920: else
1.8 nicm 921: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 922: if (sessptr != NULL)
923: xfree(sessptr);
924: return (-2);
925:
1.41 nicm 926: invalid_index:
927: if (ambiguous)
928: goto not_found;
929: ctx->error(ctx, "invalid index: %s", arg);
930:
931: if (sessptr != NULL)
932: xfree(sessptr);
933: return (-2);
934:
1.5 nicm 935: not_found:
936: if (ambiguous)
937: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 938: else
1.5 nicm 939: ctx->error(ctx, "window not found: %s", arg);
940: if (sessptr != NULL)
941: xfree(sessptr);
942: return (-2);
1.12 nicm 943: }
944:
1.43 nicm 945: int
946: cmd_find_index_offset(const char *winptr, struct session *s, int *ambiguous)
947: {
948: int idx, offset = 1;
949:
950: if (winptr[1] != '\0')
951: offset = strtonum(winptr + 1, 1, INT_MAX, NULL);
952: if (offset == 0)
953: idx = cmd_lookup_index(s, winptr, ambiguous);
954: else {
955: if (winptr[0] == '+') {
956: if (s->curw->idx == INT_MAX)
957: idx = cmd_lookup_index(s, winptr, ambiguous);
958: else
959: idx = s->curw->idx + offset;
960: } else {
961: if (s->curw->idx == 0)
962: idx = cmd_lookup_index(s, winptr, ambiguous);
963: else
964: idx = s->curw->idx - offset;
965: }
966: }
967:
968: return (idx);
969: }
970:
1.12 nicm 971: /*
972: * Find the target session, window and pane number or report an error and
973: * return NULL. The pane number is separated from the session:window by a .,
974: * such as mysession:mywindow.0.
975: */
976: struct winlink *
977: cmd_find_pane(struct cmd_ctx *ctx,
978: const char *arg, struct session **sp, struct window_pane **wpp)
979: {
1.36 nicm 980: struct session *s;
981: struct winlink *wl;
982: struct layout_cell *lc;
983: const char *period, *errstr;
984: char *winptr, *paneptr;
1.43 nicm 985: u_int idx;
1.12 nicm 986:
987: /* Get the current session. */
988: if ((s = cmd_current_session(ctx)) == NULL) {
1.27 deraadt 989: ctx->error(ctx, "can't establish current session");
1.12 nicm 990: return (NULL);
991: }
992: if (sp != NULL)
993: *sp = s;
994:
995: /* A NULL argument means the current session, window and pane. */
996: if (arg == NULL) {
997: *wpp = s->curw->window->active;
998: return (s->curw);
999: }
1000:
1001: /* Look for a separating period. */
1002: if ((period = strrchr(arg, '.')) == NULL)
1003: goto no_period;
1004:
1005: /* Pull out the window part and parse it. */
1006: winptr = xstrdup(arg);
1007: winptr[period - arg] = '\0';
1008: if (*winptr == '\0')
1009: wl = s->curw;
1010: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
1011: goto error;
1012:
1013: /* Find the pane section and look it up. */
1014: paneptr = winptr + (period - arg) + 1;
1015: if (*paneptr == '\0')
1016: *wpp = wl->window->active;
1.43 nicm 1017: else if (paneptr[0] == '+' || paneptr[0] == '-')
1018: *wpp = cmd_find_pane_offset(paneptr, wl);
1019: else {
1.12 nicm 1020: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
1.36 nicm 1021: if (errstr != NULL)
1022: goto lookup_string;
1.12 nicm 1023: *wpp = window_pane_at_index(wl->window, idx);
1.36 nicm 1024: if (*wpp == NULL)
1025: goto lookup_string;
1.12 nicm 1026: }
1027:
1028: xfree(winptr);
1029: return (wl);
1030:
1.36 nicm 1031: lookup_string:
1032: /* Try pane string description. */
1.39 nicm 1033: if ((lc = layout_find_string(wl->window, paneptr)) == NULL) {
1.36 nicm 1034: ctx->error(ctx, "can't find pane: %s", paneptr);
1035: goto error;
1036: }
1037: *wpp = lc->wp;
1038:
1039: xfree(winptr);
1.39 nicm 1040: return (wl);
1.36 nicm 1041:
1.12 nicm 1042: no_period:
1043: /* Try as a pane number alone. */
1044: idx = strtonum(arg, 0, INT_MAX, &errstr);
1045: if (errstr != NULL)
1046: goto lookup_window;
1047:
1048: /* Try index in the current session and window. */
1049: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
1050: goto lookup_window;
1.35 nicm 1051:
1.12 nicm 1052: return (s->curw);
1053:
1054: lookup_window:
1.36 nicm 1055: /* Try pane string description. */
1056: if ((lc = layout_find_string(s->curw->window, arg)) != NULL) {
1057: *wpp = lc->wp;
1058: return (s->curw);
1059: }
1060:
1.12 nicm 1061: /* Try as a window and use the active pane. */
1062: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
1063: *wpp = wl->window->active;
1064: return (wl);
1.35 nicm 1065:
1.12 nicm 1066: error:
1067: xfree(winptr);
1068: return (NULL);
1.43 nicm 1069: }
1070:
1071: struct window_pane *
1072: cmd_find_pane_offset(const char *paneptr, struct winlink *wl)
1073: {
1074: struct window *w = wl->window;
1075: struct window_pane *wp = w->active;
1076: u_int offset = 1;
1077:
1078: if (paneptr[1] != '\0')
1079: offset = strtonum(paneptr + 1, 1, INT_MAX, NULL);
1080: if (offset > 0) {
1081: if (paneptr[0] == '+')
1082: wp = window_pane_next_by_number(w, wp, offset);
1083: else
1084: wp = window_pane_previous_by_number(w, wp, offset);
1085: }
1086:
1087: return (wp);
1.15 nicm 1088: }
1089:
1090: /* Replace the first %% or %idx in template by s. */
1091: char *
1092: cmd_template_replace(char *template, const char *s, int idx)
1093: {
1094: char ch;
1095: char *buf, *ptr;
1096: int replaced;
1097: size_t len;
1098:
1099: if (strstr(template, "%") == NULL)
1100: return (xstrdup(template));
1101:
1102: buf = xmalloc(1);
1103: *buf = '\0';
1104: len = 0;
1105: replaced = 0;
1106:
1107: ptr = template;
1108: while (*ptr != '\0') {
1109: switch (ch = *ptr++) {
1110: case '%':
1111: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
1112: if (*ptr != '%' || replaced)
1113: break;
1114: replaced = 1;
1115: }
1116: ptr++;
1117:
1118: len += strlen(s);
1119: buf = xrealloc(buf, 1, len + 1);
1120: strlcat(buf, s, len + 1);
1121: continue;
1122: }
1123: buf = xrealloc(buf, 1, len + 2);
1124: buf[len++] = ch;
1125: buf[len] = '\0';
1126: }
1127:
1128: return (buf);
1.1 nicm 1129: }
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