Annotation of src/usr.bin/tmux/cmd.c, Revision 1.15
1.15 ! nicm 1: /* $OpenBSD: cmd.c,v 1.14 2009/08/23 16:45:00 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,
1.1 nicm 46: &cmd_down_pane_entry,
47: &cmd_find_window_entry,
48: &cmd_has_session_entry,
1.4 nicm 49: &cmd_if_shell_entry,
1.1 nicm 50: &cmd_kill_pane_entry,
51: &cmd_kill_server_entry,
52: &cmd_kill_session_entry,
53: &cmd_kill_window_entry,
54: &cmd_last_window_entry,
55: &cmd_link_window_entry,
56: &cmd_list_buffers_entry,
57: &cmd_list_clients_entry,
58: &cmd_list_commands_entry,
59: &cmd_list_keys_entry,
60: &cmd_list_sessions_entry,
61: &cmd_list_windows_entry,
62: &cmd_load_buffer_entry,
63: &cmd_lock_server_entry,
64: &cmd_move_window_entry,
65: &cmd_new_session_entry,
66: &cmd_new_window_entry,
67: &cmd_next_layout_entry,
68: &cmd_next_window_entry,
69: &cmd_paste_buffer_entry,
70: &cmd_previous_layout_entry,
71: &cmd_previous_window_entry,
72: &cmd_refresh_client_entry,
73: &cmd_rename_session_entry,
74: &cmd_rename_window_entry,
75: &cmd_resize_pane_entry,
76: &cmd_respawn_window_entry,
77: &cmd_rotate_window_entry,
78: &cmd_save_buffer_entry,
79: &cmd_scroll_mode_entry,
80: &cmd_select_layout_entry,
81: &cmd_select_pane_entry,
82: &cmd_select_prompt_entry,
83: &cmd_select_window_entry,
84: &cmd_send_keys_entry,
85: &cmd_send_prefix_entry,
86: &cmd_server_info_entry,
87: &cmd_set_buffer_entry,
1.13 nicm 88: &cmd_set_environment_entry,
1.1 nicm 89: &cmd_set_option_entry,
90: &cmd_set_password_entry,
91: &cmd_set_window_option_entry,
92: &cmd_show_buffer_entry,
1.13 nicm 93: &cmd_show_environment_entry,
1.1 nicm 94: &cmd_show_options_entry,
95: &cmd_show_window_options_entry,
96: &cmd_source_file_entry,
97: &cmd_split_window_entry,
98: &cmd_start_server_entry,
99: &cmd_suspend_client_entry,
100: &cmd_swap_pane_entry,
101: &cmd_swap_window_entry,
102: &cmd_switch_client_entry,
103: &cmd_unbind_key_entry,
104: &cmd_unlink_window_entry,
105: &cmd_up_pane_entry,
106: NULL
107: };
108:
1.11 nicm 109: struct session *cmd_newest_session(struct sessions *);
1.5 nicm 110: struct client *cmd_lookup_client(const char *);
111: struct session *cmd_lookup_session(const char *, int *);
112: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 113: int cmd_lookup_index(struct session *, const char *, int *);
1.5 nicm 114:
1.10 nicm 115: int
116: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
117: {
118: size_t arglen;
119: int i;
120:
121: *buf = '\0';
122: for (i = 0; i < argc; i++) {
123: if (strlcpy(buf, argv[i], len) >= len)
124: return (-1);
125: arglen = strlen(argv[i]) + 1;
126: buf += arglen;
127: len -= arglen;
128: }
129:
130: return (0);
131: }
132:
133: int
134: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
135: {
136: int i;
137: size_t arglen;
138:
139: if (argc == 0)
140: return (0);
141: *argv = xcalloc(argc, sizeof **argv);
142:
143: buf[len - 1] = '\0';
144: for (i = 0; i < argc; i++) {
145: if (len == 0) {
146: cmd_free_argv(argc, *argv);
147: return (-1);
148: }
149:
150: arglen = strlen(buf) + 1;
151: (*argv)[i] = xstrdup(buf);
152: buf += arglen;
153: len -= arglen;
154: }
155:
156: return (0);
157: }
158:
159: void
160: cmd_free_argv(int argc, char **argv)
161: {
162: int i;
163:
164: if (argc == 0)
165: return;
166: for (i = 0; i < argc; i++) {
167: if (argv[i] != NULL)
168: xfree(argv[i]);
169: }
170: xfree(argv);
171: }
172:
1.1 nicm 173: struct cmd *
174: cmd_parse(int argc, char **argv, char **cause)
175: {
176: const struct cmd_entry **entryp, *entry;
177: struct cmd *cmd;
178: char s[BUFSIZ];
1.3 nicm 179: int opt, ambiguous = 0;
1.1 nicm 180:
181: *cause = NULL;
1.2 nicm 182: if (argc == 0) {
183: xasprintf(cause, "no command");
1.1 nicm 184: return (NULL);
1.2 nicm 185: }
1.1 nicm 186:
187: entry = NULL;
188: for (entryp = cmd_table; *entryp != NULL; entryp++) {
189: if ((*entryp)->alias != NULL &&
190: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 191: ambiguous = 0;
1.1 nicm 192: entry = *entryp;
193: break;
194: }
195:
196: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
197: continue;
198: if (entry != NULL)
1.3 nicm 199: ambiguous = 1;
1.1 nicm 200: entry = *entryp;
201:
202: /* Bail now if an exact match. */
203: if (strcmp(entry->name, argv[0]) == 0)
204: break;
205: }
1.3 nicm 206: if (ambiguous)
207: goto ambiguous;
1.1 nicm 208: if (entry == NULL) {
209: xasprintf(cause, "unknown command: %s", argv[0]);
210: return (NULL);
211: }
212:
213: optreset = 1;
214: optind = 1;
215: if (entry->parse == NULL) {
216: while ((opt = getopt(argc, argv, "")) != -1) {
217: switch (opt) {
218: default:
219: goto usage;
220: }
221: }
222: argc -= optind;
223: argv += optind;
224: if (argc != 0)
225: goto usage;
226: }
227:
228: cmd = xmalloc(sizeof *cmd);
229: cmd->entry = entry;
230: cmd->data = NULL;
231: if (entry->parse != NULL) {
232: if (entry->parse(cmd, argc, argv, cause) != 0) {
233: xfree(cmd);
234: return (NULL);
235: }
236: }
237: return (cmd);
238:
239: ambiguous:
240: *s = '\0';
241: for (entryp = cmd_table; *entryp != NULL; entryp++) {
242: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
243: continue;
244: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
245: break;
246: if (strlcat(s, ", ", sizeof s) >= sizeof s)
247: break;
248: }
249: s[strlen(s) - 2] = '\0';
250: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
251: return (NULL);
252:
253: usage:
254: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
255: return (NULL);
256: }
257:
258: int
259: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
260: {
261: if (server_locked) {
262: ctx->error(ctx, "server is locked");
263: return (-1);
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:
1.5 nicm 373: /* Find the target client or report an error and return NULL. */
1.1 nicm 374: struct client *
375: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
376: {
377: struct client *c;
1.5 nicm 378: char *tmparg;
379: size_t arglen;
1.1 nicm 380:
1.5 nicm 381: /* A NULL argument means the current client. */
1.1 nicm 382: if (arg == NULL)
1.5 nicm 383: return (ctx->curclient);
384: tmparg = xstrdup(arg);
385:
386: /* Trim a single trailing colon if any. */
387: arglen = strlen(tmparg);
388: if (arglen != 0 && tmparg[arglen - 1] == ':')
389: tmparg[arglen - 1] = '\0';
390:
391: /* Find the client, if any. */
392: c = cmd_lookup_client(tmparg);
393:
394: /* If no client found, report an error. */
395: if (c == NULL)
396: ctx->error(ctx, "client not found: %s", tmparg);
397:
398: xfree(tmparg);
399: return (c);
400: }
401:
402: /*
403: * Lookup a client by device path. Either of a full match and a match without a
404: * leading _PATH_DEV ("/dev/") is accepted.
405: */
406: struct client *
407: cmd_lookup_client(const char *name)
408: {
409: struct client *c;
410: const char *path;
411: u_int i;
412:
413: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
414: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
415: continue;
416: path = c->tty.path;
417:
418: /* Check for exact matches. */
419: if (strcmp(name, path) == 0)
420: return (c);
421:
422: /* Check without leading /dev if present. */
423: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
424: continue;
425: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
426: return (c);
427: }
428:
429: return (NULL);
430: }
431:
432: /* Lookup a session by name. If no session is found, NULL is returned. */
433: struct session *
434: cmd_lookup_session(const char *name, int *ambiguous)
435: {
436: struct session *s, *sfound;
437: u_int i;
438:
439: *ambiguous = 0;
440:
441: /*
442: * Look for matches. Session names must be unique so an exact match
443: * can't be ambigious and can just be returned.
444: */
445: sfound = NULL;
446: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
447: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
448: continue;
449:
450: /* Check for an exact match and return it if found. */
451: if (strcmp(name, s->name) == 0)
452: return (s);
453:
454: /* Then check for pattern matches. */
455: if (strncmp(name, s->name, strlen(name)) == 0 ||
456: fnmatch(name, s->name, 0) == 0) {
457: if (sfound != NULL) {
458: *ambiguous = 1;
459: return (NULL);
460: }
461: sfound = s;
462: }
463: }
464:
465: return (sfound);
466: }
467:
468: /*
1.8 nicm 469: * Lookup a window or return -1 if not found or ambigious. First try as an
470: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
471: * idx if the window index is a valid number but there is now window with that
472: * index.
1.5 nicm 473: */
474: struct winlink *
475: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
476: {
477: struct winlink *wl, *wlfound;
478: const char *errstr;
479: u_int idx;
480:
481: *ambiguous = 0;
482:
483: /* First see if this is a valid window index in this session. */
484: idx = strtonum(name, 0, INT_MAX, &errstr);
485: if (errstr == NULL) {
486: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
487: return (wl);
488: }
489:
490: /* Look for exact matches, error if more than one. */
491: wlfound = NULL;
492: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 493: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 494: if (wlfound != NULL) {
495: *ambiguous = 1;
496: return (NULL);
497: }
498: wlfound = wl;
1.1 nicm 499: }
500: }
1.5 nicm 501: if (wlfound != NULL)
502: return (wlfound);
503:
504: /* Now look for pattern matches, again error if multiple. */
505: wlfound = NULL;
506: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 507: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
508: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 509: if (wlfound != NULL) {
510: *ambiguous = 1;
511: return (NULL);
512: }
513: wlfound = wl;
514: }
515: }
516: if (wlfound != NULL)
517: return (wlfound);
518:
519: return (NULL);
1.1 nicm 520: }
521:
1.8 nicm 522: /*
523: * Find a window index - if the window doesn't exist, check if it is a
524: * potential index and return it anyway.
525: */
526: int
527: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
528: {
529: struct winlink *wl;
530: const char *errstr;
531: u_int idx;
532:
533: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
534: return (wl->idx);
535: if (*ambiguous)
536: return (-1);
537:
538: idx = strtonum(name, 0, INT_MAX, &errstr);
539: if (errstr == NULL)
540: return (idx);
541:
542: return (-1);
543: }
544:
1.5 nicm 545: /* Find the target session or report an error and return NULL. */
1.1 nicm 546: struct session *
547: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
548: {
549: struct session *s;
1.5 nicm 550: struct client *c;
551: char *tmparg;
552: size_t arglen;
553: int ambiguous;
1.1 nicm 554:
1.5 nicm 555: /* A NULL argument means the current session. */
1.1 nicm 556: if (arg == NULL)
1.5 nicm 557: return (cmd_current_session(ctx));
558: tmparg = xstrdup(arg);
559:
560: /* Trim a single trailing colon if any. */
561: arglen = strlen(tmparg);
562: if (arglen != 0 && tmparg[arglen - 1] == ':')
563: tmparg[arglen - 1] = '\0';
564:
565: /* Find the session, if any. */
566: s = cmd_lookup_session(tmparg, &ambiguous);
567:
568: /* If it doesn't, try to match it as a client. */
569: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
570: s = c->session;
571:
572: /* If no session found, report an error. */
573: if (s == NULL) {
574: if (ambiguous)
575: ctx->error(ctx, "more than one session: %s", tmparg);
576: else
577: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 578: }
1.5 nicm 579:
580: xfree(tmparg);
1.1 nicm 581: return (s);
582: }
583:
1.5 nicm 584: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 585: struct winlink *
586: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
587: {
588: struct session *s;
589: struct winlink *wl;
1.5 nicm 590: const char *winptr;
591: char *sessptr = NULL;
592: int ambiguous = 0;
593:
594: /*
595: * Find the current session. There must always be a current session, if
596: * it can't be found, report an error.
597: */
598: if ((s = cmd_current_session(ctx)) == NULL) {
599: ctx->error(ctx, "can't establish current session");
600: return (NULL);
601: }
602:
603: /* A NULL argument means the current session and window. */
604: if (arg == NULL) {
605: if (sp != NULL)
606: *sp = s;
607: return (s->curw);
608: }
609:
610: /* Time to look at the argument. If it is empty, that is an error. */
611: if (*arg == '\0')
612: goto not_found;
613:
1.8 nicm 614: /* Find the separating colon and split into window and session. */
1.5 nicm 615: winptr = strchr(arg, ':');
616: if (winptr == NULL)
1.8 nicm 617: goto no_colon;
618: winptr++; /* skip : */
619: sessptr = xstrdup(arg);
620: *strchr(sessptr, ':') = '\0';
1.5 nicm 621:
622: /* Try to lookup the session if present. */
1.8 nicm 623: if (*sessptr != '\0') {
624: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 625: goto no_session;
626: }
627: if (sp != NULL)
628: *sp = s;
629:
630: /*
631: * Then work out the window. An empty string is the current window,
632: * otherwise try to look it up in the session.
633: */
1.8 nicm 634: if (*winptr == '\0')
1.5 nicm 635: wl = s->curw;
636: else if ((wl = cmd_lookup_window(s, winptr, &ambiguous)) == NULL)
637: goto not_found;
638:
639: if (sessptr != NULL)
640: xfree(sessptr);
641: return (wl);
642:
1.8 nicm 643: no_colon:
644: /* No colon in the string, first try as a window then as a session. */
645: if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) {
646: if (ambiguous)
647: goto not_found;
648: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
649: goto no_session;
650: wl = s->curw;
651: }
652:
653: if (sp != NULL)
654: *sp = s;
655:
656: return (wl);
657:
1.5 nicm 658: no_session:
659: if (ambiguous)
1.8 nicm 660: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 661: else
1.8 nicm 662: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 663: if (sessptr != NULL)
664: xfree(sessptr);
665: return (NULL);
666:
667: not_found:
668: if (ambiguous)
669: ctx->error(ctx, "multiple windows: %s", arg);
670: else
671: ctx->error(ctx, "window not found: %s", arg);
672: if (sessptr != NULL)
673: xfree(sessptr);
674: return (NULL);
675: }
1.1 nicm 676:
1.5 nicm 677: /*
678: * Find the target session and window index, whether or not it exists in the
679: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 680: * used when parsing an argument for a window target that may not exist (for
681: * example if it is going to be created).
1.5 nicm 682: */
683: int
684: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
685: {
686: struct session *s;
1.8 nicm 687: const char *winptr;
1.5 nicm 688: char *sessptr = NULL;
689: int idx, 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");
1.9 nicm 697: return (-2);
1.1 nicm 698: }
1.5 nicm 699:
700: /* A NULL argument means the current session and "no window" (-1). */
701: if (arg == NULL) {
702: if (sp != NULL)
703: *sp = s;
704: return (-1);
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:
711: /* Find the separating colon. If none, assume the current session. */
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. */
720: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 721: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 722: goto no_session;
723: }
1.1 nicm 724: if (sp != NULL)
725: *sp = s;
726:
1.5 nicm 727: /*
1.8 nicm 728: * Then work out the window. An empty string is a new window otherwise
729: * try to look it up in the session.
1.5 nicm 730: */
1.8 nicm 731: if (*winptr == '\0')
732: idx = -1;
733: else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) {
1.5 nicm 734: if (ambiguous)
735: goto not_found;
1.8 nicm 736: ctx->error(ctx, "invalid index: %s", arg);
737: idx = -2;
738: }
1.5 nicm 739:
740: if (sessptr != NULL)
741: xfree(sessptr);
742: return (idx);
743:
1.8 nicm 744: no_colon:
745: /* No colon in the string, first try as a window then as a session. */
746: if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) {
747: if (ambiguous)
748: goto not_found;
749: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
750: goto no_session;
751: idx = -1;
752: }
753:
754: if (sp != NULL)
755: *sp = s;
756:
757: return (idx);
758:
1.5 nicm 759: no_session:
760: if (ambiguous)
1.8 nicm 761: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 762: else
1.8 nicm 763: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 764: if (sessptr != NULL)
765: xfree(sessptr);
766: return (-2);
767:
768: not_found:
769: if (ambiguous)
770: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 771: else
1.5 nicm 772: ctx->error(ctx, "window not found: %s", arg);
773: if (sessptr != NULL)
774: xfree(sessptr);
775: return (-2);
1.12 nicm 776: }
777:
778: /*
779: * Find the target session, window and pane number or report an error and
780: * return NULL. The pane number is separated from the session:window by a .,
781: * such as mysession:mywindow.0.
782: */
783: struct winlink *
784: cmd_find_pane(struct cmd_ctx *ctx,
785: const char *arg, struct session **sp, struct window_pane **wpp)
786: {
787: struct session *s;
788: struct winlink *wl;
789: const char *period;
790: char *winptr, *paneptr;
791: const char *errstr;
792: u_int idx;
793:
794: /* Get the current session. */
795: if ((s = cmd_current_session(ctx)) == NULL) {
796: ctx->error(ctx, "can't establish current session");
797: return (NULL);
798: }
799: if (sp != NULL)
800: *sp = s;
801:
802: /* A NULL argument means the current session, window and pane. */
803: if (arg == NULL) {
804: *wpp = s->curw->window->active;
805: return (s->curw);
806: }
807:
808: /* Look for a separating period. */
809: if ((period = strrchr(arg, '.')) == NULL)
810: goto no_period;
811:
812: /* Pull out the window part and parse it. */
813: winptr = xstrdup(arg);
814: winptr[period - arg] = '\0';
815: if (*winptr == '\0')
816: wl = s->curw;
817: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
818: goto error;
819:
820: /* Find the pane section and look it up. */
821: paneptr = winptr + (period - arg) + 1;
822: if (*paneptr == '\0')
823: *wpp = wl->window->active;
824: else {
825: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
826: if (errstr != NULL) {
827: ctx->error(ctx, "pane %s: %s", errstr, paneptr);
828: goto error;
829: }
830: *wpp = window_pane_at_index(wl->window, idx);
831: if (*wpp == NULL) {
832: ctx->error(ctx, "no such pane: %u", idx);
833: goto error;
834: }
835: }
836:
837: xfree(winptr);
838: return (wl);
839:
840: no_period:
841: /* Try as a pane number alone. */
842: idx = strtonum(arg, 0, INT_MAX, &errstr);
843: if (errstr != NULL)
844: goto lookup_window;
845:
846: /* Try index in the current session and window. */
847: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
848: goto lookup_window;
849:
850: return (s->curw);
851:
852: lookup_window:
853: /* Try as a window and use the active pane. */
854: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
855: *wpp = wl->window->active;
856: return (wl);
857:
858: error:
859: xfree(winptr);
860: return (NULL);
1.15 ! nicm 861: }
! 862:
! 863: /* Replace the first %% or %idx in template by s. */
! 864: char *
! 865: cmd_template_replace(char *template, const char *s, int idx)
! 866: {
! 867: char ch;
! 868: char *buf, *ptr;
! 869: int replaced;
! 870: size_t len;
! 871:
! 872: if (strstr(template, "%") == NULL)
! 873: return (xstrdup(template));
! 874:
! 875: buf = xmalloc(1);
! 876: *buf = '\0';
! 877: len = 0;
! 878: replaced = 0;
! 879:
! 880: ptr = template;
! 881: while (*ptr != '\0') {
! 882: switch (ch = *ptr++) {
! 883: case '%':
! 884: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
! 885: if (*ptr != '%' || replaced)
! 886: break;
! 887: replaced = 1;
! 888: }
! 889: ptr++;
! 890:
! 891: len += strlen(s);
! 892: buf = xrealloc(buf, 1, len + 1);
! 893: strlcat(buf, s, len + 1);
! 894: continue;
! 895: }
! 896: buf = xrealloc(buf, 1, len + 2);
! 897: buf[len++] = ch;
! 898: buf[len] = '\0';
! 899: }
! 900:
! 901: return (buf);
1.1 nicm 902: }
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