Annotation of src/usr.bin/tmux/cmd.c, Revision 1.20
1.20 ! nicm 1: /* $OpenBSD: cmd.c,v 1.19 2009/09/24 14:17:09 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,
61: &cmd_list_sessions_entry,
62: &cmd_list_windows_entry,
63: &cmd_load_buffer_entry,
1.19 nicm 64: &cmd_lock_client_entry,
1.1 nicm 65: &cmd_lock_server_entry,
1.19 nicm 66: &cmd_lock_session_entry,
1.1 nicm 67: &cmd_move_window_entry,
68: &cmd_new_session_entry,
69: &cmd_new_window_entry,
70: &cmd_next_layout_entry,
71: &cmd_next_window_entry,
72: &cmd_paste_buffer_entry,
73: &cmd_previous_layout_entry,
74: &cmd_previous_window_entry,
75: &cmd_refresh_client_entry,
76: &cmd_rename_session_entry,
77: &cmd_rename_window_entry,
78: &cmd_resize_pane_entry,
79: &cmd_respawn_window_entry,
80: &cmd_rotate_window_entry,
1.17 nicm 81: &cmd_run_shell_entry,
1.1 nicm 82: &cmd_save_buffer_entry,
83: &cmd_scroll_mode_entry,
84: &cmd_select_layout_entry,
85: &cmd_select_pane_entry,
86: &cmd_select_prompt_entry,
87: &cmd_select_window_entry,
88: &cmd_send_keys_entry,
89: &cmd_send_prefix_entry,
90: &cmd_server_info_entry,
91: &cmd_set_buffer_entry,
1.13 nicm 92: &cmd_set_environment_entry,
1.1 nicm 93: &cmd_set_option_entry,
94: &cmd_set_window_option_entry,
95: &cmd_show_buffer_entry,
1.13 nicm 96: &cmd_show_environment_entry,
1.1 nicm 97: &cmd_show_options_entry,
98: &cmd_show_window_options_entry,
99: &cmd_source_file_entry,
100: &cmd_split_window_entry,
101: &cmd_start_server_entry,
102: &cmd_suspend_client_entry,
103: &cmd_swap_pane_entry,
104: &cmd_swap_window_entry,
105: &cmd_switch_client_entry,
106: &cmd_unbind_key_entry,
107: &cmd_unlink_window_entry,
108: &cmd_up_pane_entry,
109: NULL
110: };
111:
1.11 nicm 112: struct session *cmd_newest_session(struct sessions *);
1.20 ! nicm 113: struct client *cmd_newest_client(void);
1.5 nicm 114: struct client *cmd_lookup_client(const char *);
115: struct session *cmd_lookup_session(const char *, int *);
116: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 117: int cmd_lookup_index(struct session *, const char *, int *);
1.5 nicm 118:
1.10 nicm 119: int
120: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
121: {
122: size_t arglen;
123: int i;
124:
125: *buf = '\0';
126: for (i = 0; i < argc; i++) {
127: if (strlcpy(buf, argv[i], len) >= len)
128: return (-1);
129: arglen = strlen(argv[i]) + 1;
130: buf += arglen;
131: len -= arglen;
132: }
133:
134: return (0);
135: }
136:
137: int
138: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
139: {
140: int i;
141: size_t arglen;
142:
143: if (argc == 0)
144: return (0);
145: *argv = xcalloc(argc, sizeof **argv);
146:
147: buf[len - 1] = '\0';
148: for (i = 0; i < argc; i++) {
149: if (len == 0) {
150: cmd_free_argv(argc, *argv);
151: return (-1);
152: }
153:
154: arglen = strlen(buf) + 1;
155: (*argv)[i] = xstrdup(buf);
156: buf += arglen;
157: len -= arglen;
158: }
159:
160: return (0);
161: }
162:
163: void
164: cmd_free_argv(int argc, char **argv)
165: {
166: int i;
167:
168: if (argc == 0)
169: return;
170: for (i = 0; i < argc; i++) {
171: if (argv[i] != NULL)
172: xfree(argv[i]);
173: }
174: xfree(argv);
175: }
176:
1.1 nicm 177: struct cmd *
178: cmd_parse(int argc, char **argv, char **cause)
179: {
180: const struct cmd_entry **entryp, *entry;
181: struct cmd *cmd;
182: char s[BUFSIZ];
1.3 nicm 183: int opt, ambiguous = 0;
1.1 nicm 184:
185: *cause = NULL;
1.2 nicm 186: if (argc == 0) {
187: xasprintf(cause, "no command");
1.1 nicm 188: return (NULL);
1.2 nicm 189: }
1.1 nicm 190:
191: entry = NULL;
192: for (entryp = cmd_table; *entryp != NULL; entryp++) {
193: if ((*entryp)->alias != NULL &&
194: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 195: ambiguous = 0;
1.1 nicm 196: entry = *entryp;
197: break;
198: }
199:
200: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
201: continue;
202: if (entry != NULL)
1.3 nicm 203: ambiguous = 1;
1.1 nicm 204: entry = *entryp;
205:
206: /* Bail now if an exact match. */
207: if (strcmp(entry->name, argv[0]) == 0)
208: break;
209: }
1.3 nicm 210: if (ambiguous)
211: goto ambiguous;
1.1 nicm 212: if (entry == NULL) {
213: xasprintf(cause, "unknown command: %s", argv[0]);
214: return (NULL);
215: }
216:
217: optreset = 1;
218: optind = 1;
219: if (entry->parse == NULL) {
220: while ((opt = getopt(argc, argv, "")) != -1) {
221: switch (opt) {
222: default:
223: goto usage;
224: }
225: }
226: argc -= optind;
227: argv += optind;
228: if (argc != 0)
229: goto usage;
230: }
231:
232: cmd = xmalloc(sizeof *cmd);
233: cmd->entry = entry;
234: cmd->data = NULL;
235: if (entry->parse != NULL) {
236: if (entry->parse(cmd, argc, argv, cause) != 0) {
237: xfree(cmd);
238: return (NULL);
239: }
240: }
241: return (cmd);
242:
243: ambiguous:
244: *s = '\0';
245: for (entryp = cmd_table; *entryp != NULL; entryp++) {
246: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
247: continue;
248: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
249: break;
250: if (strlcat(s, ", ", sizeof s) >= sizeof s)
251: break;
252: }
253: s[strlen(s) - 2] = '\0';
254: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
255: return (NULL);
256:
257: usage:
258: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
259: return (NULL);
260: }
261:
262: int
263: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
264: {
265: return (cmd->entry->exec(cmd, ctx));
266: }
267:
268: void
269: cmd_free(struct cmd *cmd)
270: {
271: if (cmd->data != NULL && cmd->entry->free != NULL)
272: cmd->entry->free(cmd);
273: xfree(cmd);
274: }
275:
276: size_t
277: cmd_print(struct cmd *cmd, char *buf, size_t len)
278: {
279: if (cmd->entry->print == NULL) {
280: return (xsnprintf(buf, len, "%s", cmd->entry->name));
281: }
282: return (cmd->entry->print(cmd, buf, len));
283: }
284:
1.5 nicm 285: /*
286: * Figure out the current session. Use: 1) the current session, if the command
1.11 nicm 287: * context has one; 2) the session containing the pty of the calling client, if
288: * any 3) the session specified in the TMUX variable from the environment (as
289: * passed from the client); 3) the newest session.
1.5 nicm 290: */
1.1 nicm 291: struct session *
292: cmd_current_session(struct cmd_ctx *ctx)
293: {
294: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 295: struct client *c = ctx->cmdclient;
1.5 nicm 296: struct session *s;
1.11 nicm 297: struct sessions ss;
298: struct winlink *wl;
299: struct window_pane *wp;
300: u_int i;
301: int found;
1.1 nicm 302:
1.14 nicm 303: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
304: return (ctx->curclient->session);
1.1 nicm 305:
1.11 nicm 306: /*
307: * If the name of the calling client's pty is know, build a list of the
308: * sessions that contain it and if any choose either the first or the
309: * newest.
310: */
311: if (c != NULL && c->tty.path != NULL) {
312: ARRAY_INIT(&ss);
313: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
314: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
315: continue;
316: found = 0;
317: RB_FOREACH(wl, winlinks, &s->windows) {
318: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
319: if (strcmp(wp->tty, c->tty.path) == 0) {
320: found = 1;
321: break;
322: }
323: }
324: if (found)
325: break;
326: }
327: if (found)
328: ARRAY_ADD(&ss, s);
329: }
330:
331: s = cmd_newest_session(&ss);
332: ARRAY_FREE(&ss);
333: if (s != NULL)
334: return (s);
335: }
336:
337: /* Use the session from the TMUX environment variable. */
1.1 nicm 338: if (data != NULL && data->pid != -1) {
1.5 nicm 339: if (data->pid != getpid())
1.1 nicm 340: return (NULL);
1.5 nicm 341: if (data->idx > ARRAY_LENGTH(&sessions))
1.1 nicm 342: return (NULL);
1.5 nicm 343: if ((s = ARRAY_ITEM(&sessions, data->idx)) == NULL)
1.1 nicm 344: return (NULL);
345: return (s);
346: }
347:
1.11 nicm 348: return (cmd_newest_session(&sessions));
1.5 nicm 349: }
350:
351: /* Find the newest session. */
352: struct session *
1.11 nicm 353: cmd_newest_session(struct sessions *ss)
1.5 nicm 354: {
355: struct session *s, *snewest;
356: struct timeval *tv = NULL;
357: u_int i;
358:
359: snewest = NULL;
1.11 nicm 360: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
361: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 362: continue;
363:
364: if (tv == NULL || timercmp(&s->tv, tv, >)) {
365: snewest = s;
1.1 nicm 366: tv = &s->tv;
367: }
368: }
1.5 nicm 369:
370: return (snewest);
1.1 nicm 371: }
372:
1.20 ! nicm 373: /* Find the newest client. */
! 374: struct client *
! 375: cmd_newest_client(void)
! 376: {
! 377: struct client *c, *cnewest;
! 378: struct timeval *tv = NULL;
! 379: u_int i;
! 380:
! 381: cnewest = NULL;
! 382: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
! 383: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
! 384: continue;
! 385: if (c->session == NULL)
! 386: continue;
! 387:
! 388: if (tv == NULL || timercmp(&c->tv, tv, >)) {
! 389: cnewest = c;
! 390: tv = &c->tv;
! 391: }
! 392: }
! 393:
! 394: return (cnewest);
! 395: }
! 396:
1.5 nicm 397: /* Find the target client or report an error and return NULL. */
1.1 nicm 398: struct client *
399: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
400: {
401: struct client *c;
1.20 ! nicm 402: struct session *s;
1.5 nicm 403: char *tmparg;
404: size_t arglen;
1.20 ! nicm 405: u_int i;
1.1 nicm 406:
1.5 nicm 407: /* A NULL argument means the current client. */
1.20 ! nicm 408: if (arg == NULL) {
! 409: if (ctx->curclient != NULL)
! 410: return (ctx->curclient);
! 411: /*
! 412: * No current client set. Find the current session and see if
! 413: * it has only has one client.
! 414: */
! 415: s = cmd_current_session(ctx);
! 416: if (s != NULL) {
! 417: c = NULL;
! 418: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
! 419: if (ARRAY_ITEM(&clients, i)->session == s) {
! 420: if (c != NULL)
! 421: break;
! 422: c = ARRAY_ITEM(&clients, i);
! 423: }
! 424: }
! 425: if (i == ARRAY_LENGTH(&clients) && c != NULL)
! 426: return (c);
! 427: }
! 428: return (cmd_newest_client());
! 429: }
1.5 nicm 430: tmparg = xstrdup(arg);
431:
432: /* Trim a single trailing colon if any. */
433: arglen = strlen(tmparg);
434: if (arglen != 0 && tmparg[arglen - 1] == ':')
435: tmparg[arglen - 1] = '\0';
436:
437: /* Find the client, if any. */
438: c = cmd_lookup_client(tmparg);
439:
440: /* If no client found, report an error. */
441: if (c == NULL)
442: ctx->error(ctx, "client not found: %s", tmparg);
443:
444: xfree(tmparg);
445: return (c);
446: }
447:
448: /*
449: * Lookup a client by device path. Either of a full match and a match without a
450: * leading _PATH_DEV ("/dev/") is accepted.
451: */
452: struct client *
453: cmd_lookup_client(const char *name)
454: {
455: struct client *c;
456: const char *path;
457: u_int i;
458:
459: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
460: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
461: continue;
462: path = c->tty.path;
463:
464: /* Check for exact matches. */
465: if (strcmp(name, path) == 0)
466: return (c);
467:
468: /* Check without leading /dev if present. */
469: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
470: continue;
471: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
472: return (c);
473: }
474:
475: return (NULL);
476: }
477:
478: /* Lookup a session by name. If no session is found, NULL is returned. */
479: struct session *
480: cmd_lookup_session(const char *name, int *ambiguous)
481: {
482: struct session *s, *sfound;
483: u_int i;
484:
485: *ambiguous = 0;
486:
487: /*
488: * Look for matches. Session names must be unique so an exact match
489: * can't be ambigious and can just be returned.
490: */
491: sfound = NULL;
492: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
493: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
494: continue;
495:
496: /* Check for an exact match and return it if found. */
497: if (strcmp(name, s->name) == 0)
498: return (s);
499:
500: /* Then check for pattern matches. */
501: if (strncmp(name, s->name, strlen(name)) == 0 ||
502: fnmatch(name, s->name, 0) == 0) {
503: if (sfound != NULL) {
504: *ambiguous = 1;
505: return (NULL);
506: }
507: sfound = s;
508: }
509: }
510:
511: return (sfound);
512: }
513:
514: /*
1.8 nicm 515: * Lookup a window or return -1 if not found or ambigious. First try as an
516: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
517: * idx if the window index is a valid number but there is now window with that
518: * index.
1.5 nicm 519: */
520: struct winlink *
521: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
522: {
523: struct winlink *wl, *wlfound;
524: const char *errstr;
525: u_int idx;
526:
527: *ambiguous = 0;
528:
529: /* First see if this is a valid window index in this session. */
530: idx = strtonum(name, 0, INT_MAX, &errstr);
531: if (errstr == NULL) {
532: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
533: return (wl);
534: }
535:
536: /* Look for exact matches, error if more than one. */
537: wlfound = NULL;
538: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 539: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 540: if (wlfound != NULL) {
541: *ambiguous = 1;
542: return (NULL);
543: }
544: wlfound = wl;
1.1 nicm 545: }
546: }
1.5 nicm 547: if (wlfound != NULL)
548: return (wlfound);
549:
550: /* Now look for pattern matches, again error if multiple. */
551: wlfound = NULL;
552: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 553: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
554: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 555: if (wlfound != NULL) {
556: *ambiguous = 1;
557: return (NULL);
558: }
559: wlfound = wl;
560: }
561: }
562: if (wlfound != NULL)
563: return (wlfound);
564:
565: return (NULL);
1.1 nicm 566: }
567:
1.8 nicm 568: /*
569: * Find a window index - if the window doesn't exist, check if it is a
570: * potential index and return it anyway.
571: */
572: int
573: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
574: {
575: struct winlink *wl;
576: const char *errstr;
577: u_int idx;
578:
579: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
580: return (wl->idx);
581: if (*ambiguous)
582: return (-1);
583:
584: idx = strtonum(name, 0, INT_MAX, &errstr);
585: if (errstr == NULL)
586: return (idx);
587:
588: return (-1);
589: }
590:
1.5 nicm 591: /* Find the target session or report an error and return NULL. */
1.1 nicm 592: struct session *
593: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
594: {
595: struct session *s;
1.5 nicm 596: struct client *c;
597: char *tmparg;
598: size_t arglen;
599: int ambiguous;
1.1 nicm 600:
1.5 nicm 601: /* A NULL argument means the current session. */
1.1 nicm 602: if (arg == NULL)
1.5 nicm 603: return (cmd_current_session(ctx));
604: tmparg = xstrdup(arg);
605:
606: /* Trim a single trailing colon if any. */
607: arglen = strlen(tmparg);
608: if (arglen != 0 && tmparg[arglen - 1] == ':')
609: tmparg[arglen - 1] = '\0';
610:
611: /* Find the session, if any. */
612: s = cmd_lookup_session(tmparg, &ambiguous);
613:
614: /* If it doesn't, try to match it as a client. */
615: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
616: s = c->session;
617:
618: /* If no session found, report an error. */
619: if (s == NULL) {
620: if (ambiguous)
621: ctx->error(ctx, "more than one session: %s", tmparg);
622: else
623: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 624: }
1.5 nicm 625:
626: xfree(tmparg);
1.1 nicm 627: return (s);
628: }
629:
1.5 nicm 630: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 631: struct winlink *
632: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
633: {
634: struct session *s;
635: struct winlink *wl;
1.5 nicm 636: const char *winptr;
637: char *sessptr = NULL;
638: int ambiguous = 0;
639:
640: /*
641: * Find the current session. There must always be a current session, if
642: * it can't be found, report an error.
643: */
644: if ((s = cmd_current_session(ctx)) == NULL) {
645: ctx->error(ctx, "can't establish current session");
646: return (NULL);
647: }
648:
649: /* A NULL argument means the current session and window. */
650: if (arg == NULL) {
651: if (sp != NULL)
652: *sp = s;
653: return (s->curw);
654: }
655:
656: /* Time to look at the argument. If it is empty, that is an error. */
657: if (*arg == '\0')
658: goto not_found;
659:
1.8 nicm 660: /* Find the separating colon and split into window and session. */
1.5 nicm 661: winptr = strchr(arg, ':');
662: if (winptr == NULL)
1.8 nicm 663: goto no_colon;
664: winptr++; /* skip : */
665: sessptr = xstrdup(arg);
666: *strchr(sessptr, ':') = '\0';
1.5 nicm 667:
668: /* Try to lookup the session if present. */
1.8 nicm 669: if (*sessptr != '\0') {
670: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 671: goto no_session;
672: }
673: if (sp != NULL)
674: *sp = s;
675:
676: /*
677: * Then work out the window. An empty string is the current window,
678: * otherwise try to look it up in the session.
679: */
1.8 nicm 680: if (*winptr == '\0')
1.5 nicm 681: wl = s->curw;
682: else if ((wl = cmd_lookup_window(s, winptr, &ambiguous)) == NULL)
683: goto not_found;
684:
685: if (sessptr != NULL)
686: xfree(sessptr);
687: return (wl);
688:
1.8 nicm 689: no_colon:
690: /* No colon in the string, first try as a window then as a session. */
691: if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) {
692: if (ambiguous)
693: goto not_found;
694: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
695: goto no_session;
696: wl = s->curw;
697: }
698:
699: if (sp != NULL)
700: *sp = s;
701:
702: return (wl);
703:
1.5 nicm 704: no_session:
705: if (ambiguous)
1.8 nicm 706: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 707: else
1.8 nicm 708: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 709: if (sessptr != NULL)
710: xfree(sessptr);
711: return (NULL);
712:
713: not_found:
714: if (ambiguous)
715: ctx->error(ctx, "multiple windows: %s", arg);
716: else
717: ctx->error(ctx, "window not found: %s", arg);
718: if (sessptr != NULL)
719: xfree(sessptr);
720: return (NULL);
721: }
1.1 nicm 722:
1.5 nicm 723: /*
724: * Find the target session and window index, whether or not it exists in the
725: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 726: * used when parsing an argument for a window target that may not exist (for
727: * example if it is going to be created).
1.5 nicm 728: */
729: int
730: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
731: {
732: struct session *s;
1.8 nicm 733: const char *winptr;
1.5 nicm 734: char *sessptr = NULL;
735: int idx, ambiguous = 0;
736:
737: /*
738: * Find the current session. There must always be a current session, if
739: * it can't be found, report an error.
740: */
741: if ((s = cmd_current_session(ctx)) == NULL) {
742: ctx->error(ctx, "can't establish current session");
1.9 nicm 743: return (-2);
1.1 nicm 744: }
1.5 nicm 745:
746: /* A NULL argument means the current session and "no window" (-1). */
747: if (arg == NULL) {
748: if (sp != NULL)
749: *sp = s;
750: return (-1);
751: }
752:
753: /* Time to look at the argument. If it is empty, that is an error. */
754: if (*arg == '\0')
755: goto not_found;
756:
757: /* Find the separating colon. If none, assume the current session. */
758: winptr = strchr(arg, ':');
759: if (winptr == NULL)
1.8 nicm 760: goto no_colon;
761: winptr++; /* skip : */
762: sessptr = xstrdup(arg);
763: *strchr(sessptr, ':') = '\0';
1.5 nicm 764:
765: /* Try to lookup the session if present. */
766: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 767: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 768: goto no_session;
769: }
1.1 nicm 770: if (sp != NULL)
771: *sp = s;
772:
1.5 nicm 773: /*
1.8 nicm 774: * Then work out the window. An empty string is a new window otherwise
775: * try to look it up in the session.
1.5 nicm 776: */
1.8 nicm 777: if (*winptr == '\0')
778: idx = -1;
779: else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) {
1.5 nicm 780: if (ambiguous)
781: goto not_found;
1.8 nicm 782: ctx->error(ctx, "invalid index: %s", arg);
783: idx = -2;
784: }
1.5 nicm 785:
786: if (sessptr != NULL)
787: xfree(sessptr);
788: return (idx);
789:
1.8 nicm 790: no_colon:
791: /* No colon in the string, first try as a window then as a session. */
792: if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) {
793: if (ambiguous)
794: goto not_found;
795: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
796: goto no_session;
797: idx = -1;
798: }
799:
800: if (sp != NULL)
801: *sp = s;
802:
803: return (idx);
804:
1.5 nicm 805: no_session:
806: if (ambiguous)
1.8 nicm 807: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 808: else
1.8 nicm 809: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 810: if (sessptr != NULL)
811: xfree(sessptr);
812: return (-2);
813:
814: not_found:
815: if (ambiguous)
816: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 817: else
1.5 nicm 818: ctx->error(ctx, "window not found: %s", arg);
819: if (sessptr != NULL)
820: xfree(sessptr);
821: return (-2);
1.12 nicm 822: }
823:
824: /*
825: * Find the target session, window and pane number or report an error and
826: * return NULL. The pane number is separated from the session:window by a .,
827: * such as mysession:mywindow.0.
828: */
829: struct winlink *
830: cmd_find_pane(struct cmd_ctx *ctx,
831: const char *arg, struct session **sp, struct window_pane **wpp)
832: {
833: struct session *s;
834: struct winlink *wl;
835: const char *period;
836: char *winptr, *paneptr;
837: const char *errstr;
838: u_int idx;
839:
840: /* Get the current session. */
841: if ((s = cmd_current_session(ctx)) == NULL) {
842: ctx->error(ctx, "can't establish current session");
843: return (NULL);
844: }
845: if (sp != NULL)
846: *sp = s;
847:
848: /* A NULL argument means the current session, window and pane. */
849: if (arg == NULL) {
850: *wpp = s->curw->window->active;
851: return (s->curw);
852: }
853:
854: /* Look for a separating period. */
855: if ((period = strrchr(arg, '.')) == NULL)
856: goto no_period;
857:
858: /* Pull out the window part and parse it. */
859: winptr = xstrdup(arg);
860: winptr[period - arg] = '\0';
861: if (*winptr == '\0')
862: wl = s->curw;
863: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
864: goto error;
865:
866: /* Find the pane section and look it up. */
867: paneptr = winptr + (period - arg) + 1;
868: if (*paneptr == '\0')
869: *wpp = wl->window->active;
870: else {
871: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
872: if (errstr != NULL) {
873: ctx->error(ctx, "pane %s: %s", errstr, paneptr);
874: goto error;
875: }
876: *wpp = window_pane_at_index(wl->window, idx);
877: if (*wpp == NULL) {
878: ctx->error(ctx, "no such pane: %u", idx);
879: goto error;
880: }
881: }
882:
883: xfree(winptr);
884: return (wl);
885:
886: no_period:
887: /* Try as a pane number alone. */
888: idx = strtonum(arg, 0, INT_MAX, &errstr);
889: if (errstr != NULL)
890: goto lookup_window;
891:
892: /* Try index in the current session and window. */
893: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
894: goto lookup_window;
895:
896: return (s->curw);
897:
898: lookup_window:
899: /* Try as a window and use the active pane. */
900: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
901: *wpp = wl->window->active;
902: return (wl);
903:
904: error:
905: xfree(winptr);
906: return (NULL);
1.15 nicm 907: }
908:
909: /* Replace the first %% or %idx in template by s. */
910: char *
911: cmd_template_replace(char *template, const char *s, int idx)
912: {
913: char ch;
914: char *buf, *ptr;
915: int replaced;
916: size_t len;
917:
918: if (strstr(template, "%") == NULL)
919: return (xstrdup(template));
920:
921: buf = xmalloc(1);
922: *buf = '\0';
923: len = 0;
924: replaced = 0;
925:
926: ptr = template;
927: while (*ptr != '\0') {
928: switch (ch = *ptr++) {
929: case '%':
930: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
931: if (*ptr != '%' || replaced)
932: break;
933: replaced = 1;
934: }
935: ptr++;
936:
937: len += strlen(s);
938: buf = xrealloc(buf, 1, len + 1);
939: strlcat(buf, s, len + 1);
940: continue;
941: }
942: buf = xrealloc(buf, 1, len + 2);
943: buf[len++] = ch;
944: buf[len] = '\0';
945: }
946:
947: return (buf);
1.1 nicm 948: }
![[BACK]](/icons/back.gif){kind=icon}
Return to cmd.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux