Annotation of src/usr.bin/tmux/cmd.c, Revision 1.18
1.18 ! nicm 1: /* $OpenBSD: cmd.c,v 1.17 2009/09/20 19:15:01 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,
64: &cmd_lock_server_entry,
65: &cmd_move_window_entry,
66: &cmd_new_session_entry,
67: &cmd_new_window_entry,
68: &cmd_next_layout_entry,
69: &cmd_next_window_entry,
70: &cmd_paste_buffer_entry,
71: &cmd_previous_layout_entry,
72: &cmd_previous_window_entry,
73: &cmd_refresh_client_entry,
74: &cmd_rename_session_entry,
75: &cmd_rename_window_entry,
76: &cmd_resize_pane_entry,
77: &cmd_respawn_window_entry,
78: &cmd_rotate_window_entry,
1.17 nicm 79: &cmd_run_shell_entry,
1.1 nicm 80: &cmd_save_buffer_entry,
81: &cmd_scroll_mode_entry,
82: &cmd_select_layout_entry,
83: &cmd_select_pane_entry,
84: &cmd_select_prompt_entry,
85: &cmd_select_window_entry,
86: &cmd_send_keys_entry,
87: &cmd_send_prefix_entry,
88: &cmd_server_info_entry,
89: &cmd_set_buffer_entry,
1.13 nicm 90: &cmd_set_environment_entry,
1.1 nicm 91: &cmd_set_option_entry,
92: &cmd_set_window_option_entry,
93: &cmd_show_buffer_entry,
1.13 nicm 94: &cmd_show_environment_entry,
1.1 nicm 95: &cmd_show_options_entry,
96: &cmd_show_window_options_entry,
97: &cmd_source_file_entry,
98: &cmd_split_window_entry,
99: &cmd_start_server_entry,
100: &cmd_suspend_client_entry,
101: &cmd_swap_pane_entry,
102: &cmd_swap_window_entry,
103: &cmd_switch_client_entry,
104: &cmd_unbind_key_entry,
105: &cmd_unlink_window_entry,
106: &cmd_up_pane_entry,
107: NULL
108: };
109:
1.11 nicm 110: struct session *cmd_newest_session(struct sessions *);
1.5 nicm 111: struct client *cmd_lookup_client(const char *);
112: struct session *cmd_lookup_session(const char *, int *);
113: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 114: int cmd_lookup_index(struct session *, const char *, int *);
1.5 nicm 115:
1.10 nicm 116: int
117: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
118: {
119: size_t arglen;
120: int i;
121:
122: *buf = '\0';
123: for (i = 0; i < argc; i++) {
124: if (strlcpy(buf, argv[i], len) >= len)
125: return (-1);
126: arglen = strlen(argv[i]) + 1;
127: buf += arglen;
128: len -= arglen;
129: }
130:
131: return (0);
132: }
133:
134: int
135: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
136: {
137: int i;
138: size_t arglen;
139:
140: if (argc == 0)
141: return (0);
142: *argv = xcalloc(argc, sizeof **argv);
143:
144: buf[len - 1] = '\0';
145: for (i = 0; i < argc; i++) {
146: if (len == 0) {
147: cmd_free_argv(argc, *argv);
148: return (-1);
149: }
150:
151: arglen = strlen(buf) + 1;
152: (*argv)[i] = xstrdup(buf);
153: buf += arglen;
154: len -= arglen;
155: }
156:
157: return (0);
158: }
159:
160: void
161: cmd_free_argv(int argc, char **argv)
162: {
163: int i;
164:
165: if (argc == 0)
166: return;
167: for (i = 0; i < argc; i++) {
168: if (argv[i] != NULL)
169: xfree(argv[i]);
170: }
171: xfree(argv);
172: }
173:
1.1 nicm 174: struct cmd *
175: cmd_parse(int argc, char **argv, char **cause)
176: {
177: const struct cmd_entry **entryp, *entry;
178: struct cmd *cmd;
179: char s[BUFSIZ];
1.3 nicm 180: int opt, ambiguous = 0;
1.1 nicm 181:
182: *cause = NULL;
1.2 nicm 183: if (argc == 0) {
184: xasprintf(cause, "no command");
1.1 nicm 185: return (NULL);
1.2 nicm 186: }
1.1 nicm 187:
188: entry = NULL;
189: for (entryp = cmd_table; *entryp != NULL; entryp++) {
190: if ((*entryp)->alias != NULL &&
191: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 192: ambiguous = 0;
1.1 nicm 193: entry = *entryp;
194: break;
195: }
196:
197: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
198: continue;
199: if (entry != NULL)
1.3 nicm 200: ambiguous = 1;
1.1 nicm 201: entry = *entryp;
202:
203: /* Bail now if an exact match. */
204: if (strcmp(entry->name, argv[0]) == 0)
205: break;
206: }
1.3 nicm 207: if (ambiguous)
208: goto ambiguous;
1.1 nicm 209: if (entry == NULL) {
210: xasprintf(cause, "unknown command: %s", argv[0]);
211: return (NULL);
212: }
213:
214: optreset = 1;
215: optind = 1;
216: if (entry->parse == NULL) {
217: while ((opt = getopt(argc, argv, "")) != -1) {
218: switch (opt) {
219: default:
220: goto usage;
221: }
222: }
223: argc -= optind;
224: argv += optind;
225: if (argc != 0)
226: goto usage;
227: }
228:
229: cmd = xmalloc(sizeof *cmd);
230: cmd->entry = entry;
231: cmd->data = NULL;
232: if (entry->parse != NULL) {
233: if (entry->parse(cmd, argc, argv, cause) != 0) {
234: xfree(cmd);
235: return (NULL);
236: }
237: }
238: return (cmd);
239:
240: ambiguous:
241: *s = '\0';
242: for (entryp = cmd_table; *entryp != NULL; entryp++) {
243: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
244: continue;
245: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
246: break;
247: if (strlcat(s, ", ", sizeof s) >= sizeof s)
248: break;
249: }
250: s[strlen(s) - 2] = '\0';
251: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
252: return (NULL);
253:
254: usage:
255: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
256: return (NULL);
257: }
258:
259: int
260: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
261: {
262: return (cmd->entry->exec(cmd, ctx));
263: }
264:
265: void
266: cmd_free(struct cmd *cmd)
267: {
268: if (cmd->data != NULL && cmd->entry->free != NULL)
269: cmd->entry->free(cmd);
270: xfree(cmd);
271: }
272:
273: size_t
274: cmd_print(struct cmd *cmd, char *buf, size_t len)
275: {
276: if (cmd->entry->print == NULL) {
277: return (xsnprintf(buf, len, "%s", cmd->entry->name));
278: }
279: return (cmd->entry->print(cmd, buf, len));
280: }
281:
1.5 nicm 282: /*
283: * Figure out the current session. Use: 1) the current session, if the command
1.11 nicm 284: * context has one; 2) the session containing the pty of the calling client, if
285: * any 3) the session specified in the TMUX variable from the environment (as
286: * passed from the client); 3) the newest session.
1.5 nicm 287: */
1.1 nicm 288: struct session *
289: cmd_current_session(struct cmd_ctx *ctx)
290: {
291: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 292: struct client *c = ctx->cmdclient;
1.5 nicm 293: struct session *s;
1.11 nicm 294: struct sessions ss;
295: struct winlink *wl;
296: struct window_pane *wp;
297: u_int i;
298: int found;
1.1 nicm 299:
1.14 nicm 300: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
301: return (ctx->curclient->session);
1.1 nicm 302:
1.11 nicm 303: /*
304: * If the name of the calling client's pty is know, build a list of the
305: * sessions that contain it and if any choose either the first or the
306: * newest.
307: */
308: if (c != NULL && c->tty.path != NULL) {
309: ARRAY_INIT(&ss);
310: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
311: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
312: continue;
313: found = 0;
314: RB_FOREACH(wl, winlinks, &s->windows) {
315: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
316: if (strcmp(wp->tty, c->tty.path) == 0) {
317: found = 1;
318: break;
319: }
320: }
321: if (found)
322: break;
323: }
324: if (found)
325: ARRAY_ADD(&ss, s);
326: }
327:
328: s = cmd_newest_session(&ss);
329: ARRAY_FREE(&ss);
330: if (s != NULL)
331: return (s);
332: }
333:
334: /* Use the session from the TMUX environment variable. */
1.1 nicm 335: if (data != NULL && data->pid != -1) {
1.5 nicm 336: if (data->pid != getpid())
1.1 nicm 337: return (NULL);
1.5 nicm 338: if (data->idx > ARRAY_LENGTH(&sessions))
1.1 nicm 339: return (NULL);
1.5 nicm 340: if ((s = ARRAY_ITEM(&sessions, data->idx)) == NULL)
1.1 nicm 341: return (NULL);
342: return (s);
343: }
344:
1.11 nicm 345: return (cmd_newest_session(&sessions));
1.5 nicm 346: }
347:
348: /* Find the newest session. */
349: struct session *
1.11 nicm 350: cmd_newest_session(struct sessions *ss)
1.5 nicm 351: {
352: struct session *s, *snewest;
353: struct timeval *tv = NULL;
354: u_int i;
355:
356: snewest = NULL;
1.11 nicm 357: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
358: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 359: continue;
360:
361: if (tv == NULL || timercmp(&s->tv, tv, >)) {
362: snewest = s;
1.1 nicm 363: tv = &s->tv;
364: }
365: }
1.5 nicm 366:
367: return (snewest);
1.1 nicm 368: }
369:
1.5 nicm 370: /* Find the target client or report an error and return NULL. */
1.1 nicm 371: struct client *
372: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
373: {
374: struct client *c;
1.5 nicm 375: char *tmparg;
376: size_t arglen;
1.1 nicm 377:
1.5 nicm 378: /* A NULL argument means the current client. */
1.1 nicm 379: if (arg == NULL)
1.5 nicm 380: return (ctx->curclient);
381: tmparg = xstrdup(arg);
382:
383: /* Trim a single trailing colon if any. */
384: arglen = strlen(tmparg);
385: if (arglen != 0 && tmparg[arglen - 1] == ':')
386: tmparg[arglen - 1] = '\0';
387:
388: /* Find the client, if any. */
389: c = cmd_lookup_client(tmparg);
390:
391: /* If no client found, report an error. */
392: if (c == NULL)
393: ctx->error(ctx, "client not found: %s", tmparg);
394:
395: xfree(tmparg);
396: return (c);
397: }
398:
399: /*
400: * Lookup a client by device path. Either of a full match and a match without a
401: * leading _PATH_DEV ("/dev/") is accepted.
402: */
403: struct client *
404: cmd_lookup_client(const char *name)
405: {
406: struct client *c;
407: const char *path;
408: u_int i;
409:
410: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
411: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
412: continue;
413: path = c->tty.path;
414:
415: /* Check for exact matches. */
416: if (strcmp(name, path) == 0)
417: return (c);
418:
419: /* Check without leading /dev if present. */
420: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
421: continue;
422: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
423: return (c);
424: }
425:
426: return (NULL);
427: }
428:
429: /* Lookup a session by name. If no session is found, NULL is returned. */
430: struct session *
431: cmd_lookup_session(const char *name, int *ambiguous)
432: {
433: struct session *s, *sfound;
434: u_int i;
435:
436: *ambiguous = 0;
437:
438: /*
439: * Look for matches. Session names must be unique so an exact match
440: * can't be ambigious and can just be returned.
441: */
442: sfound = NULL;
443: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
444: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
445: continue;
446:
447: /* Check for an exact match and return it if found. */
448: if (strcmp(name, s->name) == 0)
449: return (s);
450:
451: /* Then check for pattern matches. */
452: if (strncmp(name, s->name, strlen(name)) == 0 ||
453: fnmatch(name, s->name, 0) == 0) {
454: if (sfound != NULL) {
455: *ambiguous = 1;
456: return (NULL);
457: }
458: sfound = s;
459: }
460: }
461:
462: return (sfound);
463: }
464:
465: /*
1.8 nicm 466: * Lookup a window or return -1 if not found or ambigious. First try as an
467: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
468: * idx if the window index is a valid number but there is now window with that
469: * index.
1.5 nicm 470: */
471: struct winlink *
472: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
473: {
474: struct winlink *wl, *wlfound;
475: const char *errstr;
476: u_int idx;
477:
478: *ambiguous = 0;
479:
480: /* First see if this is a valid window index in this session. */
481: idx = strtonum(name, 0, INT_MAX, &errstr);
482: if (errstr == NULL) {
483: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
484: return (wl);
485: }
486:
487: /* Look for exact matches, error if more than one. */
488: wlfound = NULL;
489: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 490: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 491: if (wlfound != NULL) {
492: *ambiguous = 1;
493: return (NULL);
494: }
495: wlfound = wl;
1.1 nicm 496: }
497: }
1.5 nicm 498: if (wlfound != NULL)
499: return (wlfound);
500:
501: /* Now look for pattern matches, again error if multiple. */
502: wlfound = NULL;
503: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 504: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
505: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 506: if (wlfound != NULL) {
507: *ambiguous = 1;
508: return (NULL);
509: }
510: wlfound = wl;
511: }
512: }
513: if (wlfound != NULL)
514: return (wlfound);
515:
516: return (NULL);
1.1 nicm 517: }
518:
1.8 nicm 519: /*
520: * Find a window index - if the window doesn't exist, check if it is a
521: * potential index and return it anyway.
522: */
523: int
524: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
525: {
526: struct winlink *wl;
527: const char *errstr;
528: u_int idx;
529:
530: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
531: return (wl->idx);
532: if (*ambiguous)
533: return (-1);
534:
535: idx = strtonum(name, 0, INT_MAX, &errstr);
536: if (errstr == NULL)
537: return (idx);
538:
539: return (-1);
540: }
541:
1.5 nicm 542: /* Find the target session or report an error and return NULL. */
1.1 nicm 543: struct session *
544: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
545: {
546: struct session *s;
1.5 nicm 547: struct client *c;
548: char *tmparg;
549: size_t arglen;
550: int ambiguous;
1.1 nicm 551:
1.5 nicm 552: /* A NULL argument means the current session. */
1.1 nicm 553: if (arg == NULL)
1.5 nicm 554: return (cmd_current_session(ctx));
555: tmparg = xstrdup(arg);
556:
557: /* Trim a single trailing colon if any. */
558: arglen = strlen(tmparg);
559: if (arglen != 0 && tmparg[arglen - 1] == ':')
560: tmparg[arglen - 1] = '\0';
561:
562: /* Find the session, if any. */
563: s = cmd_lookup_session(tmparg, &ambiguous);
564:
565: /* If it doesn't, try to match it as a client. */
566: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
567: s = c->session;
568:
569: /* If no session found, report an error. */
570: if (s == NULL) {
571: if (ambiguous)
572: ctx->error(ctx, "more than one session: %s", tmparg);
573: else
574: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 575: }
1.5 nicm 576:
577: xfree(tmparg);
1.1 nicm 578: return (s);
579: }
580:
1.5 nicm 581: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 582: struct winlink *
583: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
584: {
585: struct session *s;
586: struct winlink *wl;
1.5 nicm 587: const char *winptr;
588: char *sessptr = NULL;
589: int ambiguous = 0;
590:
591: /*
592: * Find the current session. There must always be a current session, if
593: * it can't be found, report an error.
594: */
595: if ((s = cmd_current_session(ctx)) == NULL) {
596: ctx->error(ctx, "can't establish current session");
597: return (NULL);
598: }
599:
600: /* A NULL argument means the current session and window. */
601: if (arg == NULL) {
602: if (sp != NULL)
603: *sp = s;
604: return (s->curw);
605: }
606:
607: /* Time to look at the argument. If it is empty, that is an error. */
608: if (*arg == '\0')
609: goto not_found;
610:
1.8 nicm 611: /* Find the separating colon and split into window and session. */
1.5 nicm 612: winptr = strchr(arg, ':');
613: if (winptr == NULL)
1.8 nicm 614: goto no_colon;
615: winptr++; /* skip : */
616: sessptr = xstrdup(arg);
617: *strchr(sessptr, ':') = '\0';
1.5 nicm 618:
619: /* Try to lookup the session if present. */
1.8 nicm 620: if (*sessptr != '\0') {
621: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 622: goto no_session;
623: }
624: if (sp != NULL)
625: *sp = s;
626:
627: /*
628: * Then work out the window. An empty string is the current window,
629: * otherwise try to look it up in the session.
630: */
1.8 nicm 631: if (*winptr == '\0')
1.5 nicm 632: wl = s->curw;
633: else if ((wl = cmd_lookup_window(s, winptr, &ambiguous)) == NULL)
634: goto not_found;
635:
636: if (sessptr != NULL)
637: xfree(sessptr);
638: return (wl);
639:
1.8 nicm 640: no_colon:
641: /* No colon in the string, first try as a window then as a session. */
642: if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) {
643: if (ambiguous)
644: goto not_found;
645: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
646: goto no_session;
647: wl = s->curw;
648: }
649:
650: if (sp != NULL)
651: *sp = s;
652:
653: return (wl);
654:
1.5 nicm 655: no_session:
656: if (ambiguous)
1.8 nicm 657: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 658: else
1.8 nicm 659: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 660: if (sessptr != NULL)
661: xfree(sessptr);
662: return (NULL);
663:
664: not_found:
665: if (ambiguous)
666: ctx->error(ctx, "multiple windows: %s", arg);
667: else
668: ctx->error(ctx, "window not found: %s", arg);
669: if (sessptr != NULL)
670: xfree(sessptr);
671: return (NULL);
672: }
1.1 nicm 673:
1.5 nicm 674: /*
675: * Find the target session and window index, whether or not it exists in the
676: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 677: * used when parsing an argument for a window target that may not exist (for
678: * example if it is going to be created).
1.5 nicm 679: */
680: int
681: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
682: {
683: struct session *s;
1.8 nicm 684: const char *winptr;
1.5 nicm 685: char *sessptr = NULL;
686: int idx, ambiguous = 0;
687:
688: /*
689: * Find the current session. There must always be a current session, if
690: * it can't be found, report an error.
691: */
692: if ((s = cmd_current_session(ctx)) == NULL) {
693: ctx->error(ctx, "can't establish current session");
1.9 nicm 694: return (-2);
1.1 nicm 695: }
1.5 nicm 696:
697: /* A NULL argument means the current session and "no window" (-1). */
698: if (arg == NULL) {
699: if (sp != NULL)
700: *sp = s;
701: return (-1);
702: }
703:
704: /* Time to look at the argument. If it is empty, that is an error. */
705: if (*arg == '\0')
706: goto not_found;
707:
708: /* Find the separating colon. If none, assume the current session. */
709: winptr = strchr(arg, ':');
710: if (winptr == NULL)
1.8 nicm 711: goto no_colon;
712: winptr++; /* skip : */
713: sessptr = xstrdup(arg);
714: *strchr(sessptr, ':') = '\0';
1.5 nicm 715:
716: /* Try to lookup the session if present. */
717: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 718: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 719: goto no_session;
720: }
1.1 nicm 721: if (sp != NULL)
722: *sp = s;
723:
1.5 nicm 724: /*
1.8 nicm 725: * Then work out the window. An empty string is a new window otherwise
726: * try to look it up in the session.
1.5 nicm 727: */
1.8 nicm 728: if (*winptr == '\0')
729: idx = -1;
730: else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) {
1.5 nicm 731: if (ambiguous)
732: goto not_found;
1.8 nicm 733: ctx->error(ctx, "invalid index: %s", arg);
734: idx = -2;
735: }
1.5 nicm 736:
737: if (sessptr != NULL)
738: xfree(sessptr);
739: return (idx);
740:
1.8 nicm 741: no_colon:
742: /* No colon in the string, first try as a window then as a session. */
743: if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) {
744: if (ambiguous)
745: goto not_found;
746: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
747: goto no_session;
748: idx = -1;
749: }
750:
751: if (sp != NULL)
752: *sp = s;
753:
754: return (idx);
755:
1.5 nicm 756: no_session:
757: if (ambiguous)
1.8 nicm 758: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 759: else
1.8 nicm 760: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 761: if (sessptr != NULL)
762: xfree(sessptr);
763: return (-2);
764:
765: not_found:
766: if (ambiguous)
767: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 768: else
1.5 nicm 769: ctx->error(ctx, "window not found: %s", arg);
770: if (sessptr != NULL)
771: xfree(sessptr);
772: return (-2);
1.12 nicm 773: }
774:
775: /*
776: * Find the target session, window and pane number or report an error and
777: * return NULL. The pane number is separated from the session:window by a .,
778: * such as mysession:mywindow.0.
779: */
780: struct winlink *
781: cmd_find_pane(struct cmd_ctx *ctx,
782: const char *arg, struct session **sp, struct window_pane **wpp)
783: {
784: struct session *s;
785: struct winlink *wl;
786: const char *period;
787: char *winptr, *paneptr;
788: const char *errstr;
789: u_int idx;
790:
791: /* Get the current session. */
792: if ((s = cmd_current_session(ctx)) == NULL) {
793: ctx->error(ctx, "can't establish current session");
794: return (NULL);
795: }
796: if (sp != NULL)
797: *sp = s;
798:
799: /* A NULL argument means the current session, window and pane. */
800: if (arg == NULL) {
801: *wpp = s->curw->window->active;
802: return (s->curw);
803: }
804:
805: /* Look for a separating period. */
806: if ((period = strrchr(arg, '.')) == NULL)
807: goto no_period;
808:
809: /* Pull out the window part and parse it. */
810: winptr = xstrdup(arg);
811: winptr[period - arg] = '\0';
812: if (*winptr == '\0')
813: wl = s->curw;
814: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
815: goto error;
816:
817: /* Find the pane section and look it up. */
818: paneptr = winptr + (period - arg) + 1;
819: if (*paneptr == '\0')
820: *wpp = wl->window->active;
821: else {
822: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
823: if (errstr != NULL) {
824: ctx->error(ctx, "pane %s: %s", errstr, paneptr);
825: goto error;
826: }
827: *wpp = window_pane_at_index(wl->window, idx);
828: if (*wpp == NULL) {
829: ctx->error(ctx, "no such pane: %u", idx);
830: goto error;
831: }
832: }
833:
834: xfree(winptr);
835: return (wl);
836:
837: no_period:
838: /* Try as a pane number alone. */
839: idx = strtonum(arg, 0, INT_MAX, &errstr);
840: if (errstr != NULL)
841: goto lookup_window;
842:
843: /* Try index in the current session and window. */
844: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
845: goto lookup_window;
846:
847: return (s->curw);
848:
849: lookup_window:
850: /* Try as a window and use the active pane. */
851: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
852: *wpp = wl->window->active;
853: return (wl);
854:
855: error:
856: xfree(winptr);
857: return (NULL);
1.15 nicm 858: }
859:
860: /* Replace the first %% or %idx in template by s. */
861: char *
862: cmd_template_replace(char *template, const char *s, int idx)
863: {
864: char ch;
865: char *buf, *ptr;
866: int replaced;
867: size_t len;
868:
869: if (strstr(template, "%") == NULL)
870: return (xstrdup(template));
871:
872: buf = xmalloc(1);
873: *buf = '\0';
874: len = 0;
875: replaced = 0;
876:
877: ptr = template;
878: while (*ptr != '\0') {
879: switch (ch = *ptr++) {
880: case '%':
881: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
882: if (*ptr != '%' || replaced)
883: break;
884: replaced = 1;
885: }
886: ptr++;
887:
888: len += strlen(s);
889: buf = xrealloc(buf, 1, len + 1);
890: strlcat(buf, s, len + 1);
891: continue;
892: }
893: buf = xrealloc(buf, 1, len + 2);
894: buf[len++] = ch;
895: buf[len] = '\0';
896: }
897:
898: return (buf);
1.1 nicm 899: }
![[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