Annotation of src/usr.bin/tmux/cmd.c, Revision 1.19
1.19 ! nicm 1: /* $OpenBSD: cmd.c,v 1.18 2009/09/23 06:18:47 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,
1.15 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 *);
1.5 nicm 113: struct client *cmd_lookup_client(const char *);
114: struct session *cmd_lookup_session(const char *, int *);
115: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8 nicm 116: int cmd_lookup_index(struct session *, const char *, int *);
1.5 nicm 117:
1.10 nicm 118: int
119: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
120: {
121: size_t arglen;
122: int i;
123:
124: *buf = '\0';
125: for (i = 0; i < argc; i++) {
126: if (strlcpy(buf, argv[i], len) >= len)
127: return (-1);
128: arglen = strlen(argv[i]) + 1;
129: buf += arglen;
130: len -= arglen;
131: }
132:
133: return (0);
134: }
135:
136: int
137: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
138: {
139: int i;
140: size_t arglen;
141:
142: if (argc == 0)
143: return (0);
144: *argv = xcalloc(argc, sizeof **argv);
145:
146: buf[len - 1] = '\0';
147: for (i = 0; i < argc; i++) {
148: if (len == 0) {
149: cmd_free_argv(argc, *argv);
150: return (-1);
151: }
152:
153: arglen = strlen(buf) + 1;
154: (*argv)[i] = xstrdup(buf);
155: buf += arglen;
156: len -= arglen;
157: }
158:
159: return (0);
160: }
161:
162: void
163: cmd_free_argv(int argc, char **argv)
164: {
165: int i;
166:
167: if (argc == 0)
168: return;
169: for (i = 0; i < argc; i++) {
170: if (argv[i] != NULL)
171: xfree(argv[i]);
172: }
173: xfree(argv);
174: }
175:
1.1 nicm 176: struct cmd *
177: cmd_parse(int argc, char **argv, char **cause)
178: {
179: const struct cmd_entry **entryp, *entry;
180: struct cmd *cmd;
181: char s[BUFSIZ];
1.3 nicm 182: int opt, ambiguous = 0;
1.1 nicm 183:
184: *cause = NULL;
1.2 nicm 185: if (argc == 0) {
186: xasprintf(cause, "no command");
1.1 nicm 187: return (NULL);
1.2 nicm 188: }
1.1 nicm 189:
190: entry = NULL;
191: for (entryp = cmd_table; *entryp != NULL; entryp++) {
192: if ((*entryp)->alias != NULL &&
193: strcmp((*entryp)->alias, argv[0]) == 0) {
1.3 nicm 194: ambiguous = 0;
1.1 nicm 195: entry = *entryp;
196: break;
197: }
198:
199: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
200: continue;
201: if (entry != NULL)
1.3 nicm 202: ambiguous = 1;
1.1 nicm 203: entry = *entryp;
204:
205: /* Bail now if an exact match. */
206: if (strcmp(entry->name, argv[0]) == 0)
207: break;
208: }
1.3 nicm 209: if (ambiguous)
210: goto ambiguous;
1.1 nicm 211: if (entry == NULL) {
212: xasprintf(cause, "unknown command: %s", argv[0]);
213: return (NULL);
214: }
215:
216: optreset = 1;
217: optind = 1;
218: if (entry->parse == NULL) {
219: while ((opt = getopt(argc, argv, "")) != -1) {
220: switch (opt) {
221: default:
222: goto usage;
223: }
224: }
225: argc -= optind;
226: argv += optind;
227: if (argc != 0)
228: goto usage;
229: }
230:
231: cmd = xmalloc(sizeof *cmd);
232: cmd->entry = entry;
233: cmd->data = NULL;
234: if (entry->parse != NULL) {
235: if (entry->parse(cmd, argc, argv, cause) != 0) {
236: xfree(cmd);
237: return (NULL);
238: }
239: }
240: return (cmd);
241:
242: ambiguous:
243: *s = '\0';
244: for (entryp = cmd_table; *entryp != NULL; entryp++) {
245: if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
246: continue;
247: if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
248: break;
249: if (strlcat(s, ", ", sizeof s) >= sizeof s)
250: break;
251: }
252: s[strlen(s) - 2] = '\0';
253: xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
254: return (NULL);
255:
256: usage:
257: xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
258: return (NULL);
259: }
260:
261: int
262: cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
263: {
264: return (cmd->entry->exec(cmd, ctx));
265: }
266:
267: void
268: cmd_free(struct cmd *cmd)
269: {
270: if (cmd->data != NULL && cmd->entry->free != NULL)
271: cmd->entry->free(cmd);
272: xfree(cmd);
273: }
274:
275: size_t
276: cmd_print(struct cmd *cmd, char *buf, size_t len)
277: {
278: if (cmd->entry->print == NULL) {
279: return (xsnprintf(buf, len, "%s", cmd->entry->name));
280: }
281: return (cmd->entry->print(cmd, buf, len));
282: }
283:
1.5 nicm 284: /*
285: * Figure out the current session. Use: 1) the current session, if the command
1.11 nicm 286: * context has one; 2) the session containing the pty of the calling client, if
287: * any 3) the session specified in the TMUX variable from the environment (as
288: * passed from the client); 3) the newest session.
1.5 nicm 289: */
1.1 nicm 290: struct session *
291: cmd_current_session(struct cmd_ctx *ctx)
292: {
293: struct msg_command_data *data = ctx->msgdata;
1.11 nicm 294: struct client *c = ctx->cmdclient;
1.5 nicm 295: struct session *s;
1.11 nicm 296: struct sessions ss;
297: struct winlink *wl;
298: struct window_pane *wp;
299: u_int i;
300: int found;
1.1 nicm 301:
1.14 nicm 302: if (ctx->curclient != NULL && ctx->curclient->session != NULL)
303: return (ctx->curclient->session);
1.1 nicm 304:
1.11 nicm 305: /*
306: * If the name of the calling client's pty is know, build a list of the
307: * sessions that contain it and if any choose either the first or the
308: * newest.
309: */
310: if (c != NULL && c->tty.path != NULL) {
311: ARRAY_INIT(&ss);
312: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
313: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
314: continue;
315: found = 0;
316: RB_FOREACH(wl, winlinks, &s->windows) {
317: TAILQ_FOREACH(wp, &wl->window->panes, entry) {
318: if (strcmp(wp->tty, c->tty.path) == 0) {
319: found = 1;
320: break;
321: }
322: }
323: if (found)
324: break;
325: }
326: if (found)
327: ARRAY_ADD(&ss, s);
328: }
329:
330: s = cmd_newest_session(&ss);
331: ARRAY_FREE(&ss);
332: if (s != NULL)
333: return (s);
334: }
335:
336: /* Use the session from the TMUX environment variable. */
1.1 nicm 337: if (data != NULL && data->pid != -1) {
1.5 nicm 338: if (data->pid != getpid())
1.1 nicm 339: return (NULL);
1.5 nicm 340: if (data->idx > ARRAY_LENGTH(&sessions))
1.1 nicm 341: return (NULL);
1.5 nicm 342: if ((s = ARRAY_ITEM(&sessions, data->idx)) == NULL)
1.1 nicm 343: return (NULL);
344: return (s);
345: }
346:
1.11 nicm 347: return (cmd_newest_session(&sessions));
1.5 nicm 348: }
349:
350: /* Find the newest session. */
351: struct session *
1.11 nicm 352: cmd_newest_session(struct sessions *ss)
1.5 nicm 353: {
354: struct session *s, *snewest;
355: struct timeval *tv = NULL;
356: u_int i;
357:
358: snewest = NULL;
1.11 nicm 359: for (i = 0; i < ARRAY_LENGTH(ss); i++) {
360: if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5 nicm 361: continue;
362:
363: if (tv == NULL || timercmp(&s->tv, tv, >)) {
364: snewest = s;
1.1 nicm 365: tv = &s->tv;
366: }
367: }
1.5 nicm 368:
369: return (snewest);
1.1 nicm 370: }
371:
1.5 nicm 372: /* Find the target client or report an error and return NULL. */
1.1 nicm 373: struct client *
374: cmd_find_client(struct cmd_ctx *ctx, const char *arg)
375: {
376: struct client *c;
1.5 nicm 377: char *tmparg;
378: size_t arglen;
1.1 nicm 379:
1.5 nicm 380: /* A NULL argument means the current client. */
1.1 nicm 381: if (arg == NULL)
1.5 nicm 382: return (ctx->curclient);
383: tmparg = xstrdup(arg);
384:
385: /* Trim a single trailing colon if any. */
386: arglen = strlen(tmparg);
387: if (arglen != 0 && tmparg[arglen - 1] == ':')
388: tmparg[arglen - 1] = '\0';
389:
390: /* Find the client, if any. */
391: c = cmd_lookup_client(tmparg);
392:
393: /* If no client found, report an error. */
394: if (c == NULL)
395: ctx->error(ctx, "client not found: %s", tmparg);
396:
397: xfree(tmparg);
398: return (c);
399: }
400:
401: /*
402: * Lookup a client by device path. Either of a full match and a match without a
403: * leading _PATH_DEV ("/dev/") is accepted.
404: */
405: struct client *
406: cmd_lookup_client(const char *name)
407: {
408: struct client *c;
409: const char *path;
410: u_int i;
411:
412: for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
413: if ((c = ARRAY_ITEM(&clients, i)) == NULL)
414: continue;
415: path = c->tty.path;
416:
417: /* Check for exact matches. */
418: if (strcmp(name, path) == 0)
419: return (c);
420:
421: /* Check without leading /dev if present. */
422: if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
423: continue;
424: if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
425: return (c);
426: }
427:
428: return (NULL);
429: }
430:
431: /* Lookup a session by name. If no session is found, NULL is returned. */
432: struct session *
433: cmd_lookup_session(const char *name, int *ambiguous)
434: {
435: struct session *s, *sfound;
436: u_int i;
437:
438: *ambiguous = 0;
439:
440: /*
441: * Look for matches. Session names must be unique so an exact match
442: * can't be ambigious and can just be returned.
443: */
444: sfound = NULL;
445: for (i = 0; i < ARRAY_LENGTH(&sessions); i++) {
446: if ((s = ARRAY_ITEM(&sessions, i)) == NULL)
447: continue;
448:
449: /* Check for an exact match and return it if found. */
450: if (strcmp(name, s->name) == 0)
451: return (s);
452:
453: /* Then check for pattern matches. */
454: if (strncmp(name, s->name, strlen(name)) == 0 ||
455: fnmatch(name, s->name, 0) == 0) {
456: if (sfound != NULL) {
457: *ambiguous = 1;
458: return (NULL);
459: }
460: sfound = s;
461: }
462: }
463:
464: return (sfound);
465: }
466:
467: /*
1.8 nicm 468: * Lookup a window or return -1 if not found or ambigious. First try as an
469: * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
470: * idx if the window index is a valid number but there is now window with that
471: * index.
1.5 nicm 472: */
473: struct winlink *
474: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
475: {
476: struct winlink *wl, *wlfound;
477: const char *errstr;
478: u_int idx;
479:
480: *ambiguous = 0;
481:
482: /* First see if this is a valid window index in this session. */
483: idx = strtonum(name, 0, INT_MAX, &errstr);
484: if (errstr == NULL) {
485: if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
486: return (wl);
487: }
488:
489: /* Look for exact matches, error if more than one. */
490: wlfound = NULL;
491: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 492: if (strcmp(name, wl->window->name) == 0) {
1.5 nicm 493: if (wlfound != NULL) {
494: *ambiguous = 1;
495: return (NULL);
496: }
497: wlfound = wl;
1.1 nicm 498: }
499: }
1.5 nicm 500: if (wlfound != NULL)
501: return (wlfound);
502:
503: /* Now look for pattern matches, again error if multiple. */
504: wlfound = NULL;
505: RB_FOREACH(wl, winlinks, &s->windows) {
1.8 nicm 506: if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
507: fnmatch(name, wl->window->name, 0) == 0) {
1.5 nicm 508: if (wlfound != NULL) {
509: *ambiguous = 1;
510: return (NULL);
511: }
512: wlfound = wl;
513: }
514: }
515: if (wlfound != NULL)
516: return (wlfound);
517:
518: return (NULL);
1.1 nicm 519: }
520:
1.8 nicm 521: /*
522: * Find a window index - if the window doesn't exist, check if it is a
523: * potential index and return it anyway.
524: */
525: int
526: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
527: {
528: struct winlink *wl;
529: const char *errstr;
530: u_int idx;
531:
532: if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
533: return (wl->idx);
534: if (*ambiguous)
535: return (-1);
536:
537: idx = strtonum(name, 0, INT_MAX, &errstr);
538: if (errstr == NULL)
539: return (idx);
540:
541: return (-1);
542: }
543:
1.5 nicm 544: /* Find the target session or report an error and return NULL. */
1.1 nicm 545: struct session *
546: cmd_find_session(struct cmd_ctx *ctx, const char *arg)
547: {
548: struct session *s;
1.5 nicm 549: struct client *c;
550: char *tmparg;
551: size_t arglen;
552: int ambiguous;
1.1 nicm 553:
1.5 nicm 554: /* A NULL argument means the current session. */
1.1 nicm 555: if (arg == NULL)
1.5 nicm 556: return (cmd_current_session(ctx));
557: tmparg = xstrdup(arg);
558:
559: /* Trim a single trailing colon if any. */
560: arglen = strlen(tmparg);
561: if (arglen != 0 && tmparg[arglen - 1] == ':')
562: tmparg[arglen - 1] = '\0';
563:
564: /* Find the session, if any. */
565: s = cmd_lookup_session(tmparg, &ambiguous);
566:
567: /* If it doesn't, try to match it as a client. */
568: if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
569: s = c->session;
570:
571: /* If no session found, report an error. */
572: if (s == NULL) {
573: if (ambiguous)
574: ctx->error(ctx, "more than one session: %s", tmparg);
575: else
576: ctx->error(ctx, "session not found: %s", tmparg);
1.1 nicm 577: }
1.5 nicm 578:
579: xfree(tmparg);
1.1 nicm 580: return (s);
581: }
582:
1.5 nicm 583: /* Find the target session and window or report an error and return NULL. */
1.1 nicm 584: struct winlink *
585: cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
586: {
587: struct session *s;
588: struct winlink *wl;
1.5 nicm 589: const char *winptr;
590: char *sessptr = NULL;
591: int ambiguous = 0;
592:
593: /*
594: * Find the current session. There must always be a current session, if
595: * it can't be found, report an error.
596: */
597: if ((s = cmd_current_session(ctx)) == NULL) {
598: ctx->error(ctx, "can't establish current session");
599: return (NULL);
600: }
601:
602: /* A NULL argument means the current session and window. */
603: if (arg == NULL) {
604: if (sp != NULL)
605: *sp = s;
606: return (s->curw);
607: }
608:
609: /* Time to look at the argument. If it is empty, that is an error. */
610: if (*arg == '\0')
611: goto not_found;
612:
1.8 nicm 613: /* Find the separating colon and split into window and session. */
1.5 nicm 614: winptr = strchr(arg, ':');
615: if (winptr == NULL)
1.8 nicm 616: goto no_colon;
617: winptr++; /* skip : */
618: sessptr = xstrdup(arg);
619: *strchr(sessptr, ':') = '\0';
1.5 nicm 620:
621: /* Try to lookup the session if present. */
1.8 nicm 622: if (*sessptr != '\0') {
623: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 624: goto no_session;
625: }
626: if (sp != NULL)
627: *sp = s;
628:
629: /*
630: * Then work out the window. An empty string is the current window,
631: * otherwise try to look it up in the session.
632: */
1.8 nicm 633: if (*winptr == '\0')
1.5 nicm 634: wl = s->curw;
635: else if ((wl = cmd_lookup_window(s, winptr, &ambiguous)) == NULL)
636: goto not_found;
637:
638: if (sessptr != NULL)
639: xfree(sessptr);
640: return (wl);
641:
1.8 nicm 642: no_colon:
643: /* No colon in the string, first try as a window then as a session. */
644: if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL) {
645: if (ambiguous)
646: goto not_found;
647: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
648: goto no_session;
649: wl = s->curw;
650: }
651:
652: if (sp != NULL)
653: *sp = s;
654:
655: return (wl);
656:
1.5 nicm 657: no_session:
658: if (ambiguous)
1.8 nicm 659: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 660: else
1.8 nicm 661: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 662: if (sessptr != NULL)
663: xfree(sessptr);
664: return (NULL);
665:
666: not_found:
667: if (ambiguous)
668: ctx->error(ctx, "multiple windows: %s", arg);
669: else
670: ctx->error(ctx, "window not found: %s", arg);
671: if (sessptr != NULL)
672: xfree(sessptr);
673: return (NULL);
674: }
1.1 nicm 675:
1.5 nicm 676: /*
677: * Find the target session and window index, whether or not it exists in the
678: * session. Return -2 on error or -1 if no window index is specified. This is
1.8 nicm 679: * used when parsing an argument for a window target that may not exist (for
680: * example if it is going to be created).
1.5 nicm 681: */
682: int
683: cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
684: {
685: struct session *s;
1.8 nicm 686: const char *winptr;
1.5 nicm 687: char *sessptr = NULL;
688: int idx, ambiguous = 0;
689:
690: /*
691: * Find the current session. There must always be a current session, if
692: * it can't be found, report an error.
693: */
694: if ((s = cmd_current_session(ctx)) == NULL) {
695: ctx->error(ctx, "can't establish current session");
1.9 nicm 696: return (-2);
1.1 nicm 697: }
1.5 nicm 698:
699: /* A NULL argument means the current session and "no window" (-1). */
700: if (arg == NULL) {
701: if (sp != NULL)
702: *sp = s;
703: return (-1);
704: }
705:
706: /* Time to look at the argument. If it is empty, that is an error. */
707: if (*arg == '\0')
708: goto not_found;
709:
710: /* Find the separating colon. If none, assume the current session. */
711: winptr = strchr(arg, ':');
712: if (winptr == NULL)
1.8 nicm 713: goto no_colon;
714: winptr++; /* skip : */
715: sessptr = xstrdup(arg);
716: *strchr(sessptr, ':') = '\0';
1.5 nicm 717:
718: /* Try to lookup the session if present. */
719: if (sessptr != NULL && *sessptr != '\0') {
1.8 nicm 720: if ((s = cmd_lookup_session(sessptr, &ambiguous)) == NULL)
1.5 nicm 721: goto no_session;
722: }
1.1 nicm 723: if (sp != NULL)
724: *sp = s;
725:
1.5 nicm 726: /*
1.8 nicm 727: * Then work out the window. An empty string is a new window otherwise
728: * try to look it up in the session.
1.5 nicm 729: */
1.8 nicm 730: if (*winptr == '\0')
731: idx = -1;
732: else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1) {
1.5 nicm 733: if (ambiguous)
734: goto not_found;
1.8 nicm 735: ctx->error(ctx, "invalid index: %s", arg);
736: idx = -2;
737: }
1.5 nicm 738:
739: if (sessptr != NULL)
740: xfree(sessptr);
741: return (idx);
742:
1.8 nicm 743: no_colon:
744: /* No colon in the string, first try as a window then as a session. */
745: if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1) {
746: if (ambiguous)
747: goto not_found;
748: if ((s = cmd_lookup_session(arg, &ambiguous)) == NULL)
749: goto no_session;
750: idx = -1;
751: }
752:
753: if (sp != NULL)
754: *sp = s;
755:
756: return (idx);
757:
1.5 nicm 758: no_session:
759: if (ambiguous)
1.8 nicm 760: ctx->error(ctx, "multiple sessions: %s", arg);
1.5 nicm 761: else
1.8 nicm 762: ctx->error(ctx, "session not found: %s", arg);
1.5 nicm 763: if (sessptr != NULL)
764: xfree(sessptr);
765: return (-2);
766:
767: not_found:
768: if (ambiguous)
769: ctx->error(ctx, "multiple windows: %s", arg);
1.1 nicm 770: else
1.5 nicm 771: ctx->error(ctx, "window not found: %s", arg);
772: if (sessptr != NULL)
773: xfree(sessptr);
774: return (-2);
1.12 nicm 775: }
776:
777: /*
778: * Find the target session, window and pane number or report an error and
779: * return NULL. The pane number is separated from the session:window by a .,
780: * such as mysession:mywindow.0.
781: */
782: struct winlink *
783: cmd_find_pane(struct cmd_ctx *ctx,
784: const char *arg, struct session **sp, struct window_pane **wpp)
785: {
786: struct session *s;
787: struct winlink *wl;
788: const char *period;
789: char *winptr, *paneptr;
790: const char *errstr;
791: u_int idx;
792:
793: /* Get the current session. */
794: if ((s = cmd_current_session(ctx)) == NULL) {
795: ctx->error(ctx, "can't establish current session");
796: return (NULL);
797: }
798: if (sp != NULL)
799: *sp = s;
800:
801: /* A NULL argument means the current session, window and pane. */
802: if (arg == NULL) {
803: *wpp = s->curw->window->active;
804: return (s->curw);
805: }
806:
807: /* Look for a separating period. */
808: if ((period = strrchr(arg, '.')) == NULL)
809: goto no_period;
810:
811: /* Pull out the window part and parse it. */
812: winptr = xstrdup(arg);
813: winptr[period - arg] = '\0';
814: if (*winptr == '\0')
815: wl = s->curw;
816: else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
817: goto error;
818:
819: /* Find the pane section and look it up. */
820: paneptr = winptr + (period - arg) + 1;
821: if (*paneptr == '\0')
822: *wpp = wl->window->active;
823: else {
824: idx = strtonum(paneptr, 0, INT_MAX, &errstr);
825: if (errstr != NULL) {
826: ctx->error(ctx, "pane %s: %s", errstr, paneptr);
827: goto error;
828: }
829: *wpp = window_pane_at_index(wl->window, idx);
830: if (*wpp == NULL) {
831: ctx->error(ctx, "no such pane: %u", idx);
832: goto error;
833: }
834: }
835:
836: xfree(winptr);
837: return (wl);
838:
839: no_period:
840: /* Try as a pane number alone. */
841: idx = strtonum(arg, 0, INT_MAX, &errstr);
842: if (errstr != NULL)
843: goto lookup_window;
844:
845: /* Try index in the current session and window. */
846: if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
847: goto lookup_window;
848:
849: return (s->curw);
850:
851: lookup_window:
852: /* Try as a window and use the active pane. */
853: if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
854: *wpp = wl->window->active;
855: return (wl);
856:
857: error:
858: xfree(winptr);
859: return (NULL);
1.15 nicm 860: }
861:
862: /* Replace the first %% or %idx in template by s. */
863: char *
864: cmd_template_replace(char *template, const char *s, int idx)
865: {
866: char ch;
867: char *buf, *ptr;
868: int replaced;
869: size_t len;
870:
871: if (strstr(template, "%") == NULL)
872: return (xstrdup(template));
873:
874: buf = xmalloc(1);
875: *buf = '\0';
876: len = 0;
877: replaced = 0;
878:
879: ptr = template;
880: while (*ptr != '\0') {
881: switch (ch = *ptr++) {
882: case '%':
883: if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
884: if (*ptr != '%' || replaced)
885: break;
886: replaced = 1;
887: }
888: ptr++;
889:
890: len += strlen(s);
891: buf = xrealloc(buf, 1, len + 1);
892: strlcat(buf, s, len + 1);
893: continue;
894: }
895: buf = xrealloc(buf, 1, len + 2);
896: buf[len++] = ch;
897: buf[len] = '\0';
898: }
899:
900: return (buf);
1.1 nicm 901: }
![[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