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Annotation of src/usr.bin/tmux/cmd.c, Revision 1.99

1.99    ! nicm        1: /* $OpenBSD: cmd.c,v 1.98 2014/10/08 17:35:58 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>
1.61      nicm       24: #include <pwd.h>
1.1       nicm       25: #include <stdlib.h>
                     26: #include <string.h>
                     27: #include <unistd.h>
                     28:
                     29: #include "tmux.h"
                     30:
                     31: const struct cmd_entry *cmd_table[] = {
                     32:        &cmd_attach_session_entry,
                     33:        &cmd_bind_key_entry,
                     34:        &cmd_break_pane_entry,
1.34      nicm       35:        &cmd_capture_pane_entry,
1.42      nicm       36:        &cmd_choose_buffer_entry,
1.15      nicm       37:        &cmd_choose_client_entry,
1.1       nicm       38:        &cmd_choose_session_entry,
1.67      nicm       39:        &cmd_choose_tree_entry,
1.1       nicm       40:        &cmd_choose_window_entry,
                     41:        &cmd_clear_history_entry,
                     42:        &cmd_clock_mode_entry,
                     43:        &cmd_command_prompt_entry,
                     44:        &cmd_confirm_before_entry,
                     45:        &cmd_copy_mode_entry,
                     46:        &cmd_delete_buffer_entry,
                     47:        &cmd_detach_client_entry,
1.7       nicm       48:        &cmd_display_message_entry,
1.16      nicm       49:        &cmd_display_panes_entry,
1.1       nicm       50:        &cmd_find_window_entry,
                     51:        &cmd_has_session_entry,
1.4       nicm       52:        &cmd_if_shell_entry,
1.37      nicm       53:        &cmd_join_pane_entry,
1.1       nicm       54:        &cmd_kill_pane_entry,
                     55:        &cmd_kill_server_entry,
                     56:        &cmd_kill_session_entry,
                     57:        &cmd_kill_window_entry,
1.45      nicm       58:        &cmd_last_pane_entry,
1.1       nicm       59:        &cmd_last_window_entry,
                     60:        &cmd_link_window_entry,
                     61:        &cmd_list_buffers_entry,
                     62:        &cmd_list_clients_entry,
                     63:        &cmd_list_commands_entry,
                     64:        &cmd_list_keys_entry,
1.23      nicm       65:        &cmd_list_panes_entry,
1.1       nicm       66:        &cmd_list_sessions_entry,
                     67:        &cmd_list_windows_entry,
                     68:        &cmd_load_buffer_entry,
1.19      nicm       69:        &cmd_lock_client_entry,
1.1       nicm       70:        &cmd_lock_server_entry,
1.19      nicm       71:        &cmd_lock_session_entry,
1.63      nicm       72:        &cmd_move_pane_entry,
1.1       nicm       73:        &cmd_move_window_entry,
                     74:        &cmd_new_session_entry,
                     75:        &cmd_new_window_entry,
                     76:        &cmd_next_layout_entry,
                     77:        &cmd_next_window_entry,
                     78:        &cmd_paste_buffer_entry,
1.24      nicm       79:        &cmd_pipe_pane_entry,
1.1       nicm       80:        &cmd_previous_layout_entry,
                     81:        &cmd_previous_window_entry,
                     82:        &cmd_refresh_client_entry,
                     83:        &cmd_rename_session_entry,
                     84:        &cmd_rename_window_entry,
                     85:        &cmd_resize_pane_entry,
1.56      nicm       86:        &cmd_respawn_pane_entry,
1.1       nicm       87:        &cmd_respawn_window_entry,
                     88:        &cmd_rotate_window_entry,
1.17      nicm       89:        &cmd_run_shell_entry,
1.1       nicm       90:        &cmd_save_buffer_entry,
                     91:        &cmd_select_layout_entry,
                     92:        &cmd_select_pane_entry,
                     93:        &cmd_select_window_entry,
                     94:        &cmd_send_keys_entry,
                     95:        &cmd_send_prefix_entry,
                     96:        &cmd_server_info_entry,
                     97:        &cmd_set_buffer_entry,
1.13      nicm       98:        &cmd_set_environment_entry,
1.1       nicm       99:        &cmd_set_option_entry,
                    100:        &cmd_set_window_option_entry,
                    101:        &cmd_show_buffer_entry,
1.13      nicm      102:        &cmd_show_environment_entry,
1.32      nicm      103:        &cmd_show_messages_entry,
1.1       nicm      104:        &cmd_show_options_entry,
                    105:        &cmd_show_window_options_entry,
                    106:        &cmd_source_file_entry,
                    107:        &cmd_split_window_entry,
                    108:        &cmd_start_server_entry,
                    109:        &cmd_suspend_client_entry,
                    110:        &cmd_swap_pane_entry,
                    111:        &cmd_swap_window_entry,
                    112:        &cmd_switch_client_entry,
                    113:        &cmd_unbind_key_entry,
                    114:        &cmd_unlink_window_entry,
1.82      nicm      115:        &cmd_wait_for_entry,
1.1       nicm      116:        NULL
                    117: };
                    118:
1.72      nicm      119: int             cmd_session_better(struct session *, struct session *, int);
1.47      nicm      120: struct session *cmd_choose_session_list(struct sessionslist *);
1.52      nicm      121: struct session *cmd_choose_session(int);
1.31      nicm      122: struct client  *cmd_choose_client(struct clients *);
1.5       nicm      123: struct client  *cmd_lookup_client(const char *);
1.97      nicm      124: struct session *cmd_lookup_session(struct cmd_q *, const char *, int *);
1.83      nicm      125: struct session *cmd_lookup_session_id(const char *);
1.5       nicm      126: struct winlink *cmd_lookup_window(struct session *, const char *, int *);
1.8       nicm      127: int             cmd_lookup_index(struct session *, const char *, int *);
1.60      nicm      128: struct winlink *cmd_lookup_winlink_windowid(struct session *, const char *);
1.80      nicm      129: struct session *cmd_window_session(struct cmd_q *, struct window *,
                    130:                    struct winlink **);
1.43      nicm      131: struct winlink *cmd_find_window_offset(const char *, struct session *, int *);
                    132: int             cmd_find_index_offset(const char *, struct session *, int *);
1.51      nicm      133: struct window_pane *cmd_find_pane_offset(const char *, struct winlink *);
1.5       nicm      134:
1.10      nicm      135: int
                    136: cmd_pack_argv(int argc, char **argv, char *buf, size_t len)
                    137: {
                    138:        size_t  arglen;
                    139:        int     i;
1.91      nicm      140:
                    141:        if (argc == 0)
                    142:                return (0);
1.10      nicm      143:
                    144:        *buf = '\0';
                    145:        for (i = 0; i < argc; i++) {
                    146:                if (strlcpy(buf, argv[i], len) >= len)
                    147:                        return (-1);
                    148:                arglen = strlen(argv[i]) + 1;
                    149:                buf += arglen;
                    150:                len -= arglen;
                    151:        }
                    152:
                    153:        return (0);
                    154: }
                    155:
                    156: int
                    157: cmd_unpack_argv(char *buf, size_t len, int argc, char ***argv)
                    158: {
                    159:        int     i;
                    160:        size_t  arglen;
                    161:
                    162:        if (argc == 0)
                    163:                return (0);
                    164:        *argv = xcalloc(argc, sizeof **argv);
                    165:
                    166:        buf[len - 1] = '\0';
                    167:        for (i = 0; i < argc; i++) {
                    168:                if (len == 0) {
                    169:                        cmd_free_argv(argc, *argv);
                    170:                        return (-1);
                    171:                }
                    172:
                    173:                arglen = strlen(buf) + 1;
                    174:                (*argv)[i] = xstrdup(buf);
                    175:                buf += arglen;
                    176:                len -= arglen;
                    177:        }
                    178:
                    179:        return (0);
1.46      nicm      180: }
                    181:
                    182: char **
1.93      nicm      183: cmd_copy_argv(int argc, char **argv)
1.46      nicm      184: {
                    185:        char    **new_argv;
                    186:        int       i;
                    187:
                    188:        if (argc == 0)
                    189:                return (NULL);
1.94      nicm      190:        new_argv = xcalloc(argc + 1, sizeof *new_argv);
1.46      nicm      191:        for (i = 0; i < argc; i++) {
                    192:                if (argv[i] != NULL)
                    193:                        new_argv[i] = xstrdup(argv[i]);
                    194:        }
                    195:        return (new_argv);
1.10      nicm      196: }
                    197:
                    198: void
                    199: cmd_free_argv(int argc, char **argv)
                    200: {
                    201:        int     i;
                    202:
                    203:        if (argc == 0)
1.35      nicm      204:                return;
1.68      nicm      205:        for (i = 0; i < argc; i++)
                    206:                free(argv[i]);
                    207:        free(argv);
1.94      nicm      208: }
                    209:
                    210: char *
                    211: cmd_stringify_argv(int argc, char **argv)
                    212: {
                    213:        char    *buf;
                    214:        int      i;
                    215:        size_t   len;
                    216:
                    217:        if (argc == 0)
                    218:                return (xstrdup(""));
                    219:
                    220:        len = 0;
                    221:        buf = NULL;
                    222:
                    223:        for (i = 0; i < argc; i++) {
                    224:                len += strlen(argv[i]) + 1;
1.98      nicm      225:                buf = xrealloc(buf, len);
1.94      nicm      226:
                    227:                if (i == 0)
                    228:                        *buf = '\0';
                    229:                else
                    230:                        strlcat(buf, " ", len);
                    231:                strlcat(buf, argv[i], len);
                    232:        }
                    233:        return (buf);
1.10      nicm      234: }
                    235:
1.1       nicm      236: struct cmd *
1.80      nicm      237: cmd_parse(int argc, char **argv, const char *file, u_int line, char **cause)
1.1       nicm      238: {
                    239:        const struct cmd_entry **entryp, *entry;
1.27      deraadt   240:        struct cmd              *cmd;
1.49      nicm      241:        struct args             *args;
1.1       nicm      242:        char                     s[BUFSIZ];
1.49      nicm      243:        int                      ambiguous = 0;
1.1       nicm      244:
                    245:        *cause = NULL;
1.2       nicm      246:        if (argc == 0) {
                    247:                xasprintf(cause, "no command");
1.1       nicm      248:                return (NULL);
1.2       nicm      249:        }
1.1       nicm      250:
                    251:        entry = NULL;
                    252:        for (entryp = cmd_table; *entryp != NULL; entryp++) {
                    253:                if ((*entryp)->alias != NULL &&
                    254:                    strcmp((*entryp)->alias, argv[0]) == 0) {
1.3       nicm      255:                        ambiguous = 0;
1.1       nicm      256:                        entry = *entryp;
                    257:                        break;
                    258:                }
                    259:
                    260:                if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
                    261:                        continue;
                    262:                if (entry != NULL)
1.3       nicm      263:                        ambiguous = 1;
1.1       nicm      264:                entry = *entryp;
                    265:
                    266:                /* Bail now if an exact match. */
                    267:                if (strcmp(entry->name, argv[0]) == 0)
                    268:                        break;
                    269:        }
1.3       nicm      270:        if (ambiguous)
                    271:                goto ambiguous;
1.1       nicm      272:        if (entry == NULL) {
                    273:                xasprintf(cause, "unknown command: %s", argv[0]);
                    274:                return (NULL);
                    275:        }
                    276:
1.49      nicm      277:        args = args_parse(entry->args_template, argc, argv);
                    278:        if (args == NULL)
                    279:                goto usage;
                    280:        if (entry->args_lower != -1 && args->argc < entry->args_lower)
                    281:                goto usage;
                    282:        if (entry->args_upper != -1 && args->argc > entry->args_upper)
                    283:                goto usage;
1.1       nicm      284:
1.80      nicm      285:        cmd = xcalloc(1, sizeof *cmd);
1.1       nicm      286:        cmd->entry = entry;
1.49      nicm      287:        cmd->args = args;
1.80      nicm      288:
                    289:        if (file != NULL)
                    290:                cmd->file = xstrdup(file);
                    291:        cmd->line = line;
                    292:
1.1       nicm      293:        return (cmd);
                    294:
                    295: ambiguous:
                    296:        *s = '\0';
                    297:        for (entryp = cmd_table; *entryp != NULL; entryp++) {
                    298:                if (strncmp((*entryp)->name, argv[0], strlen(argv[0])) != 0)
                    299:                        continue;
                    300:                if (strlcat(s, (*entryp)->name, sizeof s) >= sizeof s)
                    301:                        break;
                    302:                if (strlcat(s, ", ", sizeof s) >= sizeof s)
                    303:                        break;
                    304:        }
                    305:        s[strlen(s) - 2] = '\0';
                    306:        xasprintf(cause, "ambiguous command: %s, could be: %s", argv[0], s);
                    307:        return (NULL);
                    308:
                    309: usage:
1.49      nicm      310:        if (args != NULL)
                    311:                args_free(args);
1.1       nicm      312:        xasprintf(cause, "usage: %s %s", entry->name, entry->usage);
                    313:        return (NULL);
                    314: }
                    315:
                    316: size_t
                    317: cmd_print(struct cmd *cmd, char *buf, size_t len)
                    318: {
1.49      nicm      319:        size_t  off, used;
                    320:
                    321:        off = xsnprintf(buf, len, "%s ", cmd->entry->name);
1.85      nicm      322:        if (off + 1 < len) {
                    323:                used = args_print(cmd->args, buf + off, len - off - 1);
1.49      nicm      324:                if (used == 0)
1.64      nicm      325:                        off--;
                    326:                else
1.49      nicm      327:                        off += used;
1.64      nicm      328:                buf[off] = '\0';
1.49      nicm      329:        }
                    330:        return (off);
1.1       nicm      331: }
                    332:
1.5       nicm      333: /*
                    334:  * Figure out the current session. Use: 1) the current session, if the command
1.31      nicm      335:  * context has one; 2) the most recently used session containing the pty of the
                    336:  * calling client, if any; 3) the session specified in the TMUX variable from
                    337:  * the environment (as passed from the client); 4) the most recently used
                    338:  * session from all sessions.
1.5       nicm      339:  */
1.1       nicm      340: struct session *
1.80      nicm      341: cmd_current_session(struct cmd_q *cmdq, int prefer_unattached)
1.1       nicm      342: {
1.80      nicm      343:        struct client           *c = cmdq->client;
1.5       nicm      344:        struct session          *s;
1.47      nicm      345:        struct sessionslist      ss;
1.11      nicm      346:        struct winlink          *wl;
                    347:        struct window_pane      *wp;
1.80      nicm      348:        const char              *path;
1.11      nicm      349:        int                      found;
1.1       nicm      350:
1.99    ! nicm      351:        /* Try the queue session. */
1.80      nicm      352:        if (c != NULL && c->session != NULL)
                    353:                return (c->session);
1.1       nicm      354:
1.11      nicm      355:        /*
1.81      nicm      356:         * If the name of the calling client's pty is known, build a list of
                    357:         * the sessions that contain it and if any choose either the first or
                    358:         * the newest.
1.11      nicm      359:         */
1.80      nicm      360:        path = c == NULL ? NULL : c->tty.path;
                    361:        if (path != NULL) {
1.11      nicm      362:                ARRAY_INIT(&ss);
1.47      nicm      363:                RB_FOREACH(s, sessions, &sessions) {
1.11      nicm      364:                        found = 0;
                    365:                        RB_FOREACH(wl, winlinks, &s->windows) {
                    366:                                TAILQ_FOREACH(wp, &wl->window->panes, entry) {
1.80      nicm      367:                                        if (strcmp(wp->tty, path) == 0) {
1.11      nicm      368:                                                found = 1;
                    369:                                                break;
                    370:                                        }
                    371:                                }
                    372:                                if (found)
                    373:                                        break;
                    374:                        }
                    375:                        if (found)
                    376:                                ARRAY_ADD(&ss, s);
                    377:                }
                    378:
1.47      nicm      379:                s = cmd_choose_session_list(&ss);
1.11      nicm      380:                ARRAY_FREE(&ss);
1.47      nicm      381:                if (s != NULL)
                    382:                        return (s);
                    383:        }
                    384:
1.52      nicm      385:        return (cmd_choose_session(prefer_unattached));
1.47      nicm      386: }
                    387:
1.72      nicm      388: /* Is this session better? */
                    389: int
                    390: cmd_session_better(struct session *s, struct session *best,
                    391:     int prefer_unattached)
                    392: {
                    393:        if (best == NULL)
1.74      nicm      394:                return (1);
1.72      nicm      395:        if (prefer_unattached) {
                    396:                if (!(best->flags & SESSION_UNATTACHED) &&
                    397:                    (s->flags & SESSION_UNATTACHED))
1.74      nicm      398:                        return (1);
1.72      nicm      399:                else if ((best->flags & SESSION_UNATTACHED) &&
                    400:                    !(s->flags & SESSION_UNATTACHED))
1.74      nicm      401:                        return (0);
1.72      nicm      402:        }
                    403:        return (timercmp(&s->activity_time, &best->activity_time, >));
                    404: }
                    405:
1.52      nicm      406: /*
                    407:  * Find the most recently used session, preferring unattached if the flag is
                    408:  * set.
                    409:  */
1.47      nicm      410: struct session *
1.52      nicm      411: cmd_choose_session(int prefer_unattached)
1.47      nicm      412: {
1.72      nicm      413:        struct session  *s, *best;
1.47      nicm      414:
1.72      nicm      415:        best = NULL;
1.47      nicm      416:        RB_FOREACH(s, sessions, &sessions) {
1.72      nicm      417:                if (cmd_session_better(s, best, prefer_unattached))
                    418:                        best = s;
1.47      nicm      419:        }
1.72      nicm      420:        return (best);
1.5       nicm      421: }
                    422:
1.31      nicm      423: /* Find the most recently used session from a list. */
1.5       nicm      424: struct session *
1.47      nicm      425: cmd_choose_session_list(struct sessionslist *ss)
1.5       nicm      426: {
1.31      nicm      427:        struct session  *s, *sbest;
1.5       nicm      428:        struct timeval  *tv = NULL;
                    429:        u_int            i;
                    430:
1.31      nicm      431:        sbest = NULL;
1.11      nicm      432:        for (i = 0; i < ARRAY_LENGTH(ss); i++) {
                    433:                if ((s = ARRAY_ITEM(ss, i)) == NULL)
1.5       nicm      434:                        continue;
                    435:
1.31      nicm      436:                if (tv == NULL || timercmp(&s->activity_time, tv, >)) {
                    437:                        sbest = s;
                    438:                        tv = &s->activity_time;
1.1       nicm      439:                }
                    440:        }
1.5       nicm      441:
1.31      nicm      442:        return (sbest);
1.1       nicm      443: }
                    444:
1.30      nicm      445: /*
                    446:  * Find the current client. First try the current client if set, then pick the
1.31      nicm      447:  * most recently used of the clients attached to the current session if any,
                    448:  * then of all clients.
1.30      nicm      449:  */
                    450: struct client *
1.80      nicm      451: cmd_current_client(struct cmd_q *cmdq)
1.30      nicm      452: {
                    453:        struct session          *s;
                    454:        struct client           *c;
                    455:        struct clients           cc;
                    456:        u_int                    i;
                    457:
1.80      nicm      458:        if (cmdq->client != NULL && cmdq->client->session != NULL)
                    459:                return (cmdq->client);
1.30      nicm      460:
                    461:        /*
                    462:         * No current client set. Find the current session and return the
                    463:         * newest of its clients.
                    464:         */
1.80      nicm      465:        s = cmd_current_session(cmdq, 0);
1.30      nicm      466:        if (s != NULL && !(s->flags & SESSION_UNATTACHED)) {
                    467:                ARRAY_INIT(&cc);
                    468:                for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
                    469:                        if ((c = ARRAY_ITEM(&clients, i)) == NULL)
                    470:                                continue;
                    471:                        if (s == c->session)
                    472:                                ARRAY_ADD(&cc, c);
                    473:                }
                    474:
1.31      nicm      475:                c = cmd_choose_client(&cc);
1.30      nicm      476:                ARRAY_FREE(&cc);
                    477:                if (c != NULL)
                    478:                        return (c);
                    479:        }
                    480:
1.31      nicm      481:        return (cmd_choose_client(&clients));
1.30      nicm      482: }
                    483:
1.31      nicm      484: /* Choose the most recently used client from a list. */
1.20      nicm      485: struct client *
1.31      nicm      486: cmd_choose_client(struct clients *cc)
1.20      nicm      487: {
1.31      nicm      488:        struct client   *c, *cbest;
1.20      nicm      489:        struct timeval  *tv = NULL;
                    490:        u_int            i;
                    491:
1.31      nicm      492:        cbest = NULL;
1.30      nicm      493:        for (i = 0; i < ARRAY_LENGTH(cc); i++) {
                    494:                if ((c = ARRAY_ITEM(cc, i)) == NULL)
1.20      nicm      495:                        continue;
                    496:                if (c->session == NULL)
                    497:                        continue;
                    498:
1.31      nicm      499:                if (tv == NULL || timercmp(&c->activity_time, tv, >)) {
                    500:                        cbest = c;
                    501:                        tv = &c->activity_time;
1.20      nicm      502:                }
                    503:        }
                    504:
1.31      nicm      505:        return (cbest);
1.20      nicm      506: }
                    507:
1.99    ! nicm      508: /* Adjust current mouse position for a pane. */
        !           509: int
        !           510: cmd_mouse_at(struct window_pane *wp, struct mouse_event *m, u_int *xp,
        !           511:     u_int *yp, int last)
        !           512: {
        !           513:        u_int   x, y;
        !           514:
        !           515:        if (last) {
        !           516:                x = m->lx;
        !           517:                y = m->ly;
        !           518:        } else {
        !           519:                x = m->x;
        !           520:                y = m->y;
        !           521:        }
        !           522:
        !           523:        if (m->statusat == 0 && y > 0)
        !           524:                y--;
        !           525:        else if (m->statusat > 0 && y >= (u_int)m->statusat)
        !           526:                y = m->statusat - 1;
        !           527:
        !           528:        if (x < wp->xoff || x >= wp->xoff + wp->sx)
        !           529:                return (-1);
        !           530:        if (y < wp->yoff || y >= wp->yoff + wp->sy)
        !           531:                return (-1);
        !           532:
        !           533:        *xp = x - wp->xoff;
        !           534:        *yp = y - wp->yoff;
        !           535:        return (0);
        !           536: }
        !           537:
        !           538: /* Get current mouse window if any. */
        !           539: struct winlink *
        !           540: cmd_mouse_window(struct mouse_event *m, struct session **sp)
        !           541: {
        !           542:        struct session  *s;
        !           543:        struct window   *w;
        !           544:
        !           545:        if (!m->valid || m->s == -1 || m->w == -1)
        !           546:                return (NULL);
        !           547:        if ((s = session_find_by_id(m->s)) == NULL)
        !           548:                return (NULL);
        !           549:        if ((w = window_find_by_id(m->w)) == NULL)
        !           550:                return (NULL);
        !           551:
        !           552:        if (sp != NULL)
        !           553:                *sp = s;
        !           554:        return (winlink_find_by_window(&s->windows, w));
        !           555: }
        !           556:
        !           557: /* Get current mouse pane if any. */
        !           558: struct window_pane *
        !           559: cmd_mouse_pane(struct mouse_event *m, struct session **sp, struct winlink **wlp)
        !           560: {
        !           561:        struct winlink          *wl;
        !           562:        struct window_pane      *wp;
        !           563:
        !           564:        if ((wl = cmd_mouse_window(m, sp)) == NULL)
        !           565:                return (NULL);
        !           566:        if ((wp = window_pane_find_by_id(m->wp)) == NULL)
        !           567:                return (NULL);
        !           568:        if (!window_has_pane(wl->window, wp))
        !           569:                return (NULL);
        !           570:
        !           571:        if (wlp != NULL)
        !           572:                *wlp = wl;
        !           573:        return (wp);
        !           574: }
        !           575:
1.5       nicm      576: /* Find the target client or report an error and return NULL. */
1.1       nicm      577: struct client *
1.80      nicm      578: cmd_find_client(struct cmd_q *cmdq, const char *arg, int quiet)
1.1       nicm      579: {
1.30      nicm      580:        struct client   *c;
1.5       nicm      581:        char            *tmparg;
                    582:        size_t           arglen;
1.1       nicm      583:
1.5       nicm      584:        /* A NULL argument means the current client. */
1.79      nicm      585:        if (arg == NULL) {
1.80      nicm      586:                c = cmd_current_client(cmdq);
1.79      nicm      587:                if (c == NULL && !quiet)
1.80      nicm      588:                        cmdq_error(cmdq, "no clients");
1.79      nicm      589:                return (c);
                    590:        }
1.5       nicm      591:        tmparg = xstrdup(arg);
                    592:
                    593:        /* Trim a single trailing colon if any. */
                    594:        arglen = strlen(tmparg);
                    595:        if (arglen != 0 && tmparg[arglen - 1] == ':')
                    596:                tmparg[arglen - 1] = '\0';
                    597:
                    598:        /* Find the client, if any. */
                    599:        c = cmd_lookup_client(tmparg);
                    600:
                    601:        /* If no client found, report an error. */
1.79      nicm      602:        if (c == NULL && !quiet)
1.80      nicm      603:                cmdq_error(cmdq, "client not found: %s", tmparg);
1.5       nicm      604:
1.68      nicm      605:        free(tmparg);
1.5       nicm      606:        return (c);
                    607: }
                    608:
                    609: /*
                    610:  * Lookup a client by device path. Either of a full match and a match without a
                    611:  * leading _PATH_DEV ("/dev/") is accepted.
                    612:  */
                    613: struct client *
                    614: cmd_lookup_client(const char *name)
                    615: {
                    616:        struct client   *c;
                    617:        const char      *path;
                    618:        u_int            i;
                    619:
                    620:        for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
1.25      nicm      621:                c = ARRAY_ITEM(&clients, i);
1.81      nicm      622:                if (c == NULL || c->session == NULL || c->tty.path == NULL)
1.5       nicm      623:                        continue;
                    624:                path = c->tty.path;
                    625:
                    626:                /* Check for exact matches. */
                    627:                if (strcmp(name, path) == 0)
                    628:                        return (c);
                    629:
                    630:                /* Check without leading /dev if present. */
                    631:                if (strncmp(path, _PATH_DEV, (sizeof _PATH_DEV) - 1) != 0)
                    632:                        continue;
                    633:                if (strcmp(name, path + (sizeof _PATH_DEV) - 1) == 0)
                    634:                        return (c);
                    635:        }
                    636:
                    637:        return (NULL);
                    638: }
                    639:
1.83      nicm      640: /* Find the target session or report an error and return NULL. */
                    641: struct session *
                    642: cmd_lookup_session_id(const char *arg)
                    643: {
                    644:        char    *endptr;
                    645:        long     id;
                    646:
                    647:        if (arg[0] != '$')
                    648:                return (NULL);
                    649:        id = strtol(arg + 1, &endptr, 10);
                    650:        if (arg[1] != '\0' && *endptr == '\0')
                    651:                return (session_find_by_id(id));
                    652:        return (NULL);
                    653: }
                    654:
1.5       nicm      655: /* Lookup a session by name. If no session is found, NULL is returned. */
                    656: struct session *
1.97      nicm      657: cmd_lookup_session(struct cmd_q *cmdq, const char *name, int *ambiguous)
1.5       nicm      658: {
1.97      nicm      659:        struct session          *s, *sfound;
                    660:        struct window           *w;
                    661:        struct window_pane      *wp;
1.5       nicm      662:
                    663:        *ambiguous = 0;
1.83      nicm      664:
                    665:        /* Look for $id first. */
                    666:        if ((s = cmd_lookup_session_id(name)) != NULL)
                    667:                return (s);
1.5       nicm      668:
1.97      nicm      669:        /* Try as pane or window id. */
                    670:        if ((wp = cmd_lookup_paneid(name)) != NULL)
                    671:                return (cmd_window_session(cmdq, wp->window, NULL));
                    672:        if ((w = cmd_lookup_windowid(name)) != NULL)
                    673:                return (cmd_window_session(cmdq, w, NULL));
                    674:
1.5       nicm      675:        /*
1.28      nicm      676:         * Look for matches. First look for exact matches - session names must
                    677:         * be unique so an exact match can't be ambigious and can just be
                    678:         * returned.
1.5       nicm      679:         */
1.47      nicm      680:        if ((s = session_find(name)) != NULL)
                    681:                return (s);
1.28      nicm      682:
                    683:        /*
                    684:         * Otherwise look for partial matches, returning early if it is found to
                    685:         * be ambiguous.
                    686:         */
                    687:        sfound = NULL;
1.47      nicm      688:        RB_FOREACH(s, sessions, &sessions) {
1.5       nicm      689:                if (strncmp(name, s->name, strlen(name)) == 0 ||
                    690:                    fnmatch(name, s->name, 0) == 0) {
                    691:                        if (sfound != NULL) {
                    692:                                *ambiguous = 1;
                    693:                                return (NULL);
                    694:                        }
                    695:                        sfound = s;
                    696:                }
                    697:        }
1.35      nicm      698:        return (sfound);
1.5       nicm      699: }
                    700:
                    701: /*
1.8       nicm      702:  * Lookup a window or return -1 if not found or ambigious. First try as an
                    703:  * index and if invalid, use fnmatch or leading prefix. Return NULL but fill in
1.41      nicm      704:  * idx if the window index is a valid number but there is no window with that
1.8       nicm      705:  * index.
1.5       nicm      706:  */
                    707: struct winlink *
                    708: cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
                    709: {
1.97      nicm      710:        struct winlink          *wl, *wlfound;
                    711:        struct window           *w;
                    712:        struct window_pane      *wp;
                    713:        const char              *errstr;
                    714:        u_int                    idx;
1.5       nicm      715:
                    716:        *ambiguous = 0;
                    717:
1.97      nicm      718:        /* Try as pane or window id. */
1.60      nicm      719:        if ((wl = cmd_lookup_winlink_windowid(s, name)) != NULL)
                    720:            return (wl);
                    721:
1.97      nicm      722:        /* Lookup as pane or window id. */
                    723:        if ((wp = cmd_lookup_paneid(name)) != NULL) {
                    724:                wl = winlink_find_by_window(&s->windows, wp->window);
                    725:                if (wl != NULL)
                    726:                        return (wl);
                    727:        }
                    728:        if ((w = cmd_lookup_windowid(name)) != NULL) {
                    729:                wl = winlink_find_by_window(&s->windows, w);
                    730:                if (wl != NULL)
                    731:                        return (wl);
                    732:        }
                    733:
1.5       nicm      734:        /* First see if this is a valid window index in this session. */
                    735:        idx = strtonum(name, 0, INT_MAX, &errstr);
                    736:        if (errstr == NULL) {
                    737:                if ((wl = winlink_find_by_index(&s->windows, idx)) != NULL)
                    738:                        return (wl);
                    739:        }
1.35      nicm      740:
1.5       nicm      741:        /* Look for exact matches, error if more than one. */
                    742:        wlfound = NULL;
                    743:        RB_FOREACH(wl, winlinks, &s->windows) {
1.8       nicm      744:                if (strcmp(name, wl->window->name) == 0) {
1.5       nicm      745:                        if (wlfound != NULL) {
                    746:                                *ambiguous = 1;
                    747:                                return (NULL);
                    748:                        }
                    749:                        wlfound = wl;
1.1       nicm      750:                }
                    751:        }
1.5       nicm      752:        if (wlfound != NULL)
                    753:                return (wlfound);
                    754:
                    755:        /* Now look for pattern matches, again error if multiple. */
                    756:        wlfound = NULL;
                    757:        RB_FOREACH(wl, winlinks, &s->windows) {
1.8       nicm      758:                if (strncmp(name, wl->window->name, strlen(name)) == 0 ||
                    759:                    fnmatch(name, wl->window->name, 0) == 0) {
1.5       nicm      760:                        if (wlfound != NULL) {
                    761:                                *ambiguous = 1;
                    762:                                return (NULL);
                    763:                        }
                    764:                        wlfound = wl;
                    765:                }
1.35      nicm      766:        }
1.5       nicm      767:        if (wlfound != NULL)
                    768:                return (wlfound);
                    769:
                    770:        return (NULL);
1.1       nicm      771: }
                    772:
1.8       nicm      773: /*
                    774:  * Find a window index - if the window doesn't exist, check if it is a
                    775:  * potential index and return it anyway.
                    776:  */
                    777: int
                    778: cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
                    779: {
                    780:        struct winlink  *wl;
                    781:        const char      *errstr;
                    782:        u_int            idx;
                    783:
                    784:        if ((wl = cmd_lookup_window(s, name, ambiguous)) != NULL)
                    785:                return (wl->idx);
                    786:        if (*ambiguous)
                    787:                return (-1);
                    788:
                    789:        idx = strtonum(name, 0, INT_MAX, &errstr);
                    790:        if (errstr == NULL)
                    791:                return (idx);
                    792:
                    793:        return (-1);
                    794: }
                    795:
1.60      nicm      796: /* Lookup pane id. An initial % means a pane id. */
1.51      nicm      797: struct window_pane *
                    798: cmd_lookup_paneid(const char *arg)
                    799: {
                    800:        const char      *errstr;
                    801:        u_int            paneid;
                    802:
                    803:        if (*arg != '%')
                    804:                return (NULL);
                    805:
                    806:        paneid = strtonum(arg + 1, 0, UINT_MAX, &errstr);
                    807:        if (errstr != NULL)
                    808:                return (NULL);
                    809:        return (window_pane_find_by_id(paneid));
                    810: }
                    811:
1.60      nicm      812: /* Lookup window id in a session. An initial @ means a window id. */
                    813: struct winlink *
                    814: cmd_lookup_winlink_windowid(struct session *s, const char *arg)
                    815: {
                    816:        const char      *errstr;
                    817:        u_int            windowid;
                    818:
                    819:        if (*arg != '@')
                    820:                return (NULL);
                    821:
                    822:        windowid = strtonum(arg + 1, 0, UINT_MAX, &errstr);
                    823:        if (errstr != NULL)
                    824:                return (NULL);
                    825:        return (winlink_find_by_window_id(&s->windows, windowid));
                    826: }
                    827:
                    828: /* Lookup window id. An initial @ means a window id. */
                    829: struct window *
                    830: cmd_lookup_windowid(const char *arg)
                    831: {
                    832:        const char      *errstr;
                    833:        u_int            windowid;
                    834:
                    835:        if (*arg != '@')
                    836:                return (NULL);
                    837:
                    838:        windowid = strtonum(arg + 1, 0, UINT_MAX, &errstr);
                    839:        if (errstr != NULL)
                    840:                return (NULL);
                    841:        return (window_find_by_id(windowid));
                    842: }
                    843:
                    844: /* Find session and winlink for window. */
1.51      nicm      845: struct session *
1.80      nicm      846: cmd_window_session(struct cmd_q *cmdq, struct window *w, struct winlink **wlp)
1.51      nicm      847: {
                    848:        struct session          *s;
                    849:        struct sessionslist      ss;
                    850:        struct winlink          *wl;
                    851:
1.60      nicm      852:        /* If this window is in the current session, return that winlink. */
1.80      nicm      853:        s = cmd_current_session(cmdq, 0);
1.51      nicm      854:        if (s != NULL) {
1.60      nicm      855:                wl = winlink_find_by_window(&s->windows, w);
1.51      nicm      856:                if (wl != NULL) {
                    857:                        if (wlp != NULL)
                    858:                                *wlp = wl;
                    859:                        return (s);
                    860:                }
                    861:        }
                    862:
1.60      nicm      863:        /* Otherwise choose from all sessions with this window. */
1.51      nicm      864:        ARRAY_INIT(&ss);
                    865:        RB_FOREACH(s, sessions, &sessions) {
1.60      nicm      866:                if (winlink_find_by_window(&s->windows, w) != NULL)
1.51      nicm      867:                        ARRAY_ADD(&ss, s);
                    868:        }
                    869:        s = cmd_choose_session_list(&ss);
                    870:        ARRAY_FREE(&ss);
                    871:        if (wlp != NULL)
1.60      nicm      872:                *wlp = winlink_find_by_window(&s->windows, w);
1.51      nicm      873:        return (s);
                    874: }
                    875:
1.5       nicm      876: /* Find the target session or report an error and return NULL. */
1.1       nicm      877: struct session *
1.80      nicm      878: cmd_find_session(struct cmd_q *cmdq, const char *arg, int prefer_unattached)
1.1       nicm      879: {
1.97      nicm      880:        struct session  *s;
                    881:        struct client   *c;
                    882:        char            *tmparg;
                    883:        size_t           arglen;
                    884:        int              ambiguous;
1.1       nicm      885:
1.5       nicm      886:        /* A NULL argument means the current session. */
1.95      nicm      887:        if (arg == NULL) {
                    888:                if ((s = cmd_current_session(cmdq, prefer_unattached)) == NULL)
                    889:                        cmdq_error(cmdq, "can't establish current session");
                    890:                return (s);
                    891:        }
1.5       nicm      892:
                    893:        /* Trim a single trailing colon if any. */
1.54      nicm      894:        tmparg = xstrdup(arg);
1.5       nicm      895:        arglen = strlen(tmparg);
                    896:        if (arglen != 0 && tmparg[arglen - 1] == ':')
                    897:                tmparg[arglen - 1] = '\0';
                    898:
1.53      nicm      899:        /* An empty session name is the current session. */
                    900:        if (*tmparg == '\0') {
1.68      nicm      901:                free(tmparg);
1.95      nicm      902:                if ((s = cmd_current_session(cmdq, prefer_unattached)) == NULL)
                    903:                        cmdq_error(cmdq, "can't establish current session");
                    904:                return (s);
1.53      nicm      905:        }
                    906:
1.5       nicm      907:        /* Find the session, if any. */
1.97      nicm      908:        s = cmd_lookup_session(cmdq, tmparg, &ambiguous);
1.5       nicm      909:
                    910:        /* If it doesn't, try to match it as a client. */
                    911:        if (s == NULL && (c = cmd_lookup_client(tmparg)) != NULL)
                    912:                s = c->session;
                    913:
                    914:        /* If no session found, report an error. */
                    915:        if (s == NULL) {
                    916:                if (ambiguous)
1.80      nicm      917:                        cmdq_error(cmdq, "more than one session: %s", tmparg);
1.5       nicm      918:                else
1.80      nicm      919:                        cmdq_error(cmdq, "session not found: %s", tmparg);
1.1       nicm      920:        }
1.5       nicm      921:
1.68      nicm      922:        free(tmparg);
1.1       nicm      923:        return (s);
                    924: }
                    925:
1.5       nicm      926: /* Find the target session and window or report an error and return NULL. */
1.1       nicm      927: struct winlink *
1.80      nicm      928: cmd_find_window(struct cmd_q *cmdq, const char *arg, struct session **sp)
1.1       nicm      929: {
1.97      nicm      930:        struct session  *s;
                    931:        struct winlink  *wl;
                    932:        const char      *winptr;
                    933:        char            *sessptr = NULL;
                    934:        int              ambiguous = 0;
1.5       nicm      935:
                    936:        /*
                    937:         * Find the current session. There must always be a current session, if
                    938:         * it can't be found, report an error.
                    939:         */
1.80      nicm      940:        if ((s = cmd_current_session(cmdq, 0)) == NULL) {
                    941:                cmdq_error(cmdq, "can't establish current session");
1.5       nicm      942:                return (NULL);
                    943:        }
                    944:
                    945:        /* A NULL argument means the current session and window. */
                    946:        if (arg == NULL) {
                    947:                if (sp != NULL)
                    948:                        *sp = s;
                    949:                return (s->curw);
                    950:        }
                    951:
                    952:        /* Time to look at the argument. If it is empty, that is an error. */
                    953:        if (*arg == '\0')
                    954:                goto not_found;
                    955:
1.8       nicm      956:        /* Find the separating colon and split into window and session. */
1.5       nicm      957:        winptr = strchr(arg, ':');
                    958:        if (winptr == NULL)
1.8       nicm      959:                goto no_colon;
                    960:        winptr++;       /* skip : */
                    961:        sessptr = xstrdup(arg);
                    962:        *strchr(sessptr, ':') = '\0';
1.5       nicm      963:
                    964:        /* Try to lookup the session if present. */
1.8       nicm      965:        if (*sessptr != '\0') {
1.97      nicm      966:                if ((s = cmd_lookup_session(cmdq, sessptr, &ambiguous)) == NULL)
1.5       nicm      967:                        goto no_session;
                    968:        }
                    969:        if (sp != NULL)
                    970:                *sp = s;
                    971:
                    972:        /*
                    973:         * Then work out the window. An empty string is the current window,
1.38      nicm      974:         * otherwise try special cases then to look it up in the session.
1.5       nicm      975:         */
1.8       nicm      976:        if (*winptr == '\0')
1.5       nicm      977:                wl = s->curw;
1.38      nicm      978:        else if (winptr[0] == '!' && winptr[1] == '\0')
                    979:                wl = TAILQ_FIRST(&s->lastw);
1.73      nicm      980:        else if (winptr[0] == '^' && winptr[1] == '\0')
                    981:                wl = RB_MIN(winlinks, &s->windows);
                    982:        else if (winptr[0] == '$' && winptr[1] == '\0')
                    983:                wl = RB_MAX(winlinks, &s->windows);
1.43      nicm      984:        else if (winptr[0] == '+' || winptr[0] == '-')
                    985:                wl = cmd_find_window_offset(winptr, s, &ambiguous);
                    986:        else
1.38      nicm      987:                wl = cmd_lookup_window(s, winptr, &ambiguous);
                    988:        if (wl == NULL)
1.5       nicm      989:                goto not_found;
1.35      nicm      990:
1.5       nicm      991:        if (sessptr != NULL)
1.68      nicm      992:                free(sessptr);
1.5       nicm      993:        return (wl);
                    994:
1.8       nicm      995: no_colon:
1.38      nicm      996:        /*
                    997:         * No colon in the string, first try special cases, then as a window
                    998:         * and lastly as a session.
                    999:         */
1.99    ! nicm     1000:        if (arg[0] == '=' && arg[1] == '\0') {
        !          1001:                if ((wl = cmd_mouse_window(&cmdq->item->mouse, &s)) == NULL) {
        !          1002:                        cmdq_error(cmdq, "no mouse target");
        !          1003:                        goto error;
        !          1004:                }
        !          1005:        } else if (arg[0] == '!' && arg[1] == '\0') {
1.38      nicm     1006:                if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
                   1007:                        goto not_found;
1.41      nicm     1008:        } else if (arg[0] == '+' || arg[0] == '-') {
1.43      nicm     1009:                if ((wl = cmd_find_window_offset(arg, s, &ambiguous)) == NULL)
1.41      nicm     1010:                        goto lookup_session;
                   1011:        } else if ((wl = cmd_lookup_window(s, arg, &ambiguous)) == NULL)
                   1012:                goto lookup_session;
1.8       nicm     1013:
                   1014:        if (sp != NULL)
                   1015:                *sp = s;
                   1016:
                   1017:        return (wl);
                   1018:
1.41      nicm     1019: lookup_session:
                   1020:        if (ambiguous)
                   1021:                goto not_found;
1.97      nicm     1022:        if (*arg != '\0' &&
                   1023:            (s = cmd_lookup_session(cmdq, arg, &ambiguous)) == NULL)
1.41      nicm     1024:                goto no_session;
                   1025:
                   1026:        if (sp != NULL)
                   1027:                *sp = s;
                   1028:
                   1029:        return (s->curw);
                   1030:
1.5       nicm     1031: no_session:
                   1032:        if (ambiguous)
1.80      nicm     1033:                cmdq_error(cmdq, "multiple sessions: %s", arg);
1.5       nicm     1034:        else
1.80      nicm     1035:                cmdq_error(cmdq, "session not found: %s", arg);
1.99    ! nicm     1036:        goto error;
1.5       nicm     1037:
                   1038: not_found:
                   1039:        if (ambiguous)
1.80      nicm     1040:                cmdq_error(cmdq, "multiple windows: %s", arg);
1.5       nicm     1041:        else
1.80      nicm     1042:                cmdq_error(cmdq, "window not found: %s", arg);
1.99    ! nicm     1043:        goto error;
        !          1044:
        !          1045: error:
1.68      nicm     1046:        free(sessptr);
1.5       nicm     1047:        return (NULL);
                   1048: }
1.1       nicm     1049:
1.43      nicm     1050: struct winlink *
                   1051: cmd_find_window_offset(const char *winptr, struct session *s, int *ambiguous)
                   1052: {
                   1053:        struct winlink  *wl;
                   1054:        int              offset = 1;
                   1055:
                   1056:        if (winptr[1] != '\0')
                   1057:                offset = strtonum(winptr + 1, 1, INT_MAX, NULL);
                   1058:        if (offset == 0)
                   1059:                wl = cmd_lookup_window(s, winptr, ambiguous);
                   1060:        else {
                   1061:                if (winptr[0] == '+')
                   1062:                        wl = winlink_next_by_number(s->curw, s, offset);
                   1063:                else
                   1064:                        wl = winlink_previous_by_number(s->curw, s, offset);
                   1065:        }
                   1066:
                   1067:        return (wl);
                   1068: }
                   1069:
1.5       nicm     1070: /*
                   1071:  * Find the target session and window index, whether or not it exists in the
                   1072:  * session. Return -2 on error or -1 if no window index is specified. This is
1.8       nicm     1073:  * used when parsing an argument for a window target that may not exist (for
                   1074:  * example if it is going to be created).
1.5       nicm     1075:  */
                   1076: int
1.80      nicm     1077: cmd_find_index(struct cmd_q *cmdq, const char *arg, struct session **sp)
1.5       nicm     1078: {
                   1079:        struct session  *s;
1.38      nicm     1080:        struct winlink  *wl;
1.8       nicm     1081:        const char      *winptr;
1.5       nicm     1082:        char            *sessptr = NULL;
                   1083:        int              idx, ambiguous = 0;
                   1084:
                   1085:        /*
                   1086:         * Find the current session. There must always be a current session, if
                   1087:         * it can't be found, report an error.
                   1088:         */
1.80      nicm     1089:        if ((s = cmd_current_session(cmdq, 0)) == NULL) {
                   1090:                cmdq_error(cmdq, "can't establish current session");
1.9       nicm     1091:                return (-2);
1.1       nicm     1092:        }
1.5       nicm     1093:
                   1094:        /* A NULL argument means the current session and "no window" (-1). */
                   1095:        if (arg == NULL) {
                   1096:                if (sp != NULL)
                   1097:                        *sp = s;
                   1098:                return (-1);
                   1099:        }
                   1100:
                   1101:        /* Time to look at the argument. If it is empty, that is an error. */
                   1102:        if (*arg == '\0')
                   1103:                goto not_found;
                   1104:
                   1105:        /* Find the separating colon. If none, assume the current session. */
                   1106:        winptr = strchr(arg, ':');
                   1107:        if (winptr == NULL)
1.8       nicm     1108:                goto no_colon;
                   1109:        winptr++;       /* skip : */
                   1110:        sessptr = xstrdup(arg);
                   1111:        *strchr(sessptr, ':') = '\0';
1.5       nicm     1112:
                   1113:        /* Try to lookup the session if present. */
                   1114:        if (sessptr != NULL && *sessptr != '\0') {
1.97      nicm     1115:                if ((s = cmd_lookup_session(cmdq, sessptr, &ambiguous)) == NULL)
1.5       nicm     1116:                        goto no_session;
                   1117:        }
1.1       nicm     1118:        if (sp != NULL)
                   1119:                *sp = s;
                   1120:
1.5       nicm     1121:        /*
1.8       nicm     1122:         * Then work out the window. An empty string is a new window otherwise
                   1123:         * try to look it up in the session.
1.5       nicm     1124:         */
1.8       nicm     1125:        if (*winptr == '\0')
1.38      nicm     1126:                idx = -1;
                   1127:        else if (winptr[0] == '!' && winptr[1] == '\0') {
                   1128:                if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
                   1129:                        goto not_found;
                   1130:                idx = wl->idx;
1.41      nicm     1131:        } else if (winptr[0] == '+' || winptr[0] == '-') {
1.43      nicm     1132:                if ((idx = cmd_find_index_offset(winptr, s, &ambiguous)) < 0)
1.41      nicm     1133:                        goto invalid_index;
                   1134:        } else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1)
                   1135:                goto invalid_index;
1.35      nicm     1136:
1.68      nicm     1137:        free(sessptr);
1.5       nicm     1138:        return (idx);
                   1139:
1.8       nicm     1140: no_colon:
1.38      nicm     1141:        /*
                   1142:         * No colon in the string, first try special cases, then as a window
                   1143:         * and lastly as a session.
                   1144:         */
                   1145:        if (arg[0] == '!' && arg[1] == '\0') {
                   1146:                if ((wl = TAILQ_FIRST(&s->lastw)) == NULL)
                   1147:                        goto not_found;
                   1148:                idx = wl->idx;
1.41      nicm     1149:        } else if (arg[0] == '+' || arg[0] == '-') {
1.43      nicm     1150:                if ((idx = cmd_find_index_offset(arg, s, &ambiguous)) < 0)
1.41      nicm     1151:                        goto lookup_session;
                   1152:        } else if ((idx = cmd_lookup_index(s, arg, &ambiguous)) == -1)
                   1153:                goto lookup_session;
1.8       nicm     1154:
                   1155:        if (sp != NULL)
                   1156:                *sp = s;
                   1157:
                   1158:        return (idx);
                   1159:
1.41      nicm     1160: lookup_session:
                   1161:        if (ambiguous)
                   1162:                goto not_found;
1.97      nicm     1163:        if (*arg != '\0' &&
                   1164:            (s = cmd_lookup_session(cmdq, arg, &ambiguous)) == NULL)
1.41      nicm     1165:                goto no_session;
                   1166:
                   1167:        if (sp != NULL)
                   1168:                *sp = s;
                   1169:
                   1170:        return (-1);
                   1171:
1.5       nicm     1172: no_session:
                   1173:        if (ambiguous)
1.80      nicm     1174:                cmdq_error(cmdq, "multiple sessions: %s", arg);
1.5       nicm     1175:        else
1.80      nicm     1176:                cmdq_error(cmdq, "session not found: %s", arg);
1.68      nicm     1177:        free(sessptr);
1.5       nicm     1178:        return (-2);
                   1179:
1.41      nicm     1180: invalid_index:
                   1181:        if (ambiguous)
                   1182:                goto not_found;
1.80      nicm     1183:        cmdq_error(cmdq, "invalid index: %s", arg);
1.41      nicm     1184:
1.68      nicm     1185:        free(sessptr);
1.41      nicm     1186:        return (-2);
                   1187:
1.5       nicm     1188: not_found:
                   1189:        if (ambiguous)
1.80      nicm     1190:                cmdq_error(cmdq, "multiple windows: %s", arg);
1.1       nicm     1191:        else
1.80      nicm     1192:                cmdq_error(cmdq, "window not found: %s", arg);
1.68      nicm     1193:        free(sessptr);
1.5       nicm     1194:        return (-2);
1.12      nicm     1195: }
                   1196:
1.43      nicm     1197: int
                   1198: cmd_find_index_offset(const char *winptr, struct session *s, int *ambiguous)
                   1199: {
                   1200:        int     idx, offset = 1;
                   1201:
                   1202:        if (winptr[1] != '\0')
                   1203:                offset = strtonum(winptr + 1, 1, INT_MAX, NULL);
                   1204:        if (offset == 0)
                   1205:                idx = cmd_lookup_index(s, winptr, ambiguous);
                   1206:        else {
                   1207:                if (winptr[0] == '+') {
                   1208:                        if (s->curw->idx == INT_MAX)
                   1209:                                idx = cmd_lookup_index(s, winptr, ambiguous);
                   1210:                        else
                   1211:                                idx = s->curw->idx + offset;
                   1212:                } else {
                   1213:                        if (s->curw->idx == 0)
                   1214:                                idx = cmd_lookup_index(s, winptr, ambiguous);
                   1215:                        else
                   1216:                                idx = s->curw->idx - offset;
                   1217:                }
                   1218:        }
                   1219:
                   1220:        return (idx);
                   1221: }
                   1222:
1.12      nicm     1223: /*
                   1224:  * Find the target session, window and pane number or report an error and
                   1225:  * return NULL. The pane number is separated from the session:window by a .,
                   1226:  * such as mysession:mywindow.0.
                   1227:  */
                   1228: struct winlink *
1.80      nicm     1229: cmd_find_pane(struct cmd_q *cmdq,
1.12      nicm     1230:     const char *arg, struct session **sp, struct window_pane **wpp)
                   1231: {
1.55      nicm     1232:        struct session  *s;
                   1233:        struct winlink  *wl;
                   1234:        const char      *period, *errstr;
                   1235:        char            *winptr, *paneptr;
                   1236:        u_int            idx;
1.12      nicm     1237:
                   1238:        /* Get the current session. */
1.80      nicm     1239:        if ((s = cmd_current_session(cmdq, 0)) == NULL) {
                   1240:                cmdq_error(cmdq, "can't establish current session");
1.12      nicm     1241:                return (NULL);
                   1242:        }
                   1243:        if (sp != NULL)
                   1244:                *sp = s;
                   1245:
                   1246:        /* A NULL argument means the current session, window and pane. */
                   1247:        if (arg == NULL) {
                   1248:                *wpp = s->curw->window->active;
                   1249:                return (s->curw);
1.51      nicm     1250:        }
                   1251:
                   1252:        /* Lookup as pane id. */
                   1253:        if ((*wpp = cmd_lookup_paneid(arg)) != NULL) {
1.80      nicm     1254:                s = cmd_window_session(cmdq, (*wpp)->window, &wl);
1.51      nicm     1255:                if (sp != NULL)
                   1256:                        *sp = s;
                   1257:                return (wl);
1.12      nicm     1258:        }
                   1259:
                   1260:        /* Look for a separating period. */
                   1261:        if ((period = strrchr(arg, '.')) == NULL)
                   1262:                goto no_period;
                   1263:
                   1264:        /* Pull out the window part and parse it. */
                   1265:        winptr = xstrdup(arg);
                   1266:        winptr[period - arg] = '\0';
                   1267:        if (*winptr == '\0')
                   1268:                wl = s->curw;
1.80      nicm     1269:        else if ((wl = cmd_find_window(cmdq, winptr, sp)) == NULL)
1.12      nicm     1270:                goto error;
                   1271:
                   1272:        /* Find the pane section and look it up. */
                   1273:        paneptr = winptr + (period - arg) + 1;
                   1274:        if (*paneptr == '\0')
                   1275:                *wpp = wl->window->active;
1.43      nicm     1276:        else if (paneptr[0] == '+' || paneptr[0] == '-')
                   1277:                *wpp = cmd_find_pane_offset(paneptr, wl);
1.96      nicm     1278:        else if (paneptr[0] == '!' && paneptr[1] == '\0') {
                   1279:                if (wl->window->last == NULL) {
                   1280:                        cmdq_error(cmdq, "no last pane");
                   1281:                        goto error;
                   1282:                }
                   1283:                *wpp = wl->window->last;
                   1284:        } else {
1.12      nicm     1285:                idx = strtonum(paneptr, 0, INT_MAX, &errstr);
1.36      nicm     1286:                if (errstr != NULL)
                   1287:                        goto lookup_string;
1.12      nicm     1288:                *wpp = window_pane_at_index(wl->window, idx);
1.36      nicm     1289:                if (*wpp == NULL)
                   1290:                        goto lookup_string;
1.12      nicm     1291:        }
                   1292:
1.68      nicm     1293:        free(winptr);
1.12      nicm     1294:        return (wl);
                   1295:
1.36      nicm     1296: lookup_string:
                   1297:        /* Try pane string description. */
1.55      nicm     1298:        if ((*wpp = window_find_string(wl->window, paneptr)) == NULL) {
1.80      nicm     1299:                cmdq_error(cmdq, "can't find pane: %s", paneptr);
1.36      nicm     1300:                goto error;
                   1301:        }
                   1302:
1.68      nicm     1303:        free(winptr);
1.39      nicm     1304:        return (wl);
1.36      nicm     1305:
1.12      nicm     1306: no_period:
1.99    ! nicm     1307:        /* Check mouse event. */
        !          1308:        if (arg[0] == '=' && arg[1] == '\0') {
        !          1309:                *wpp = cmd_mouse_pane(&cmdq->item->mouse, &s, &wl);
        !          1310:                if (*wpp == NULL) {
        !          1311:                        cmdq_error(cmdq, "no mouse target");
        !          1312:                        return (NULL);
        !          1313:                }
        !          1314:                if (sp != NULL)
        !          1315:                        *sp = s;
        !          1316:                return (wl);
        !          1317:        }
        !          1318:
1.12      nicm     1319:        /* Try as a pane number alone. */
                   1320:        idx = strtonum(arg, 0, INT_MAX, &errstr);
                   1321:        if (errstr != NULL)
                   1322:                goto lookup_window;
                   1323:
                   1324:        /* Try index in the current session and window. */
                   1325:        if ((*wpp = window_pane_at_index(s->curw->window, idx)) == NULL)
                   1326:                goto lookup_window;
1.35      nicm     1327:
1.12      nicm     1328:        return (s->curw);
                   1329:
                   1330: lookup_window:
1.36      nicm     1331:        /* Try pane string description. */
1.55      nicm     1332:        if ((*wpp = window_find_string(s->curw->window, arg)) != NULL)
1.36      nicm     1333:                return (s->curw);
                   1334:
1.12      nicm     1335:        /* Try as a window and use the active pane. */
1.80      nicm     1336:        if ((wl = cmd_find_window(cmdq, arg, sp)) != NULL)
1.12      nicm     1337:                *wpp = wl->window->active;
                   1338:        return (wl);
1.35      nicm     1339:
1.12      nicm     1340: error:
1.68      nicm     1341:        free(winptr);
1.12      nicm     1342:        return (NULL);
1.43      nicm     1343: }
                   1344:
                   1345: struct window_pane *
                   1346: cmd_find_pane_offset(const char *paneptr, struct winlink *wl)
                   1347: {
                   1348:        struct window           *w = wl->window;
                   1349:        struct window_pane      *wp = w->active;
                   1350:        u_int                    offset = 1;
                   1351:
                   1352:        if (paneptr[1] != '\0')
                   1353:                offset = strtonum(paneptr + 1, 1, INT_MAX, NULL);
                   1354:        if (offset > 0) {
                   1355:                if (paneptr[0] == '+')
                   1356:                        wp = window_pane_next_by_number(w, wp, offset);
                   1357:                else
                   1358:                        wp = window_pane_previous_by_number(w, wp, offset);
                   1359:        }
                   1360:
                   1361:        return (wp);
1.15      nicm     1362: }
                   1363:
                   1364: /* Replace the first %% or %idx in template by s. */
                   1365: char *
1.75      nicm     1366: cmd_template_replace(const char *template, const char *s, int idx)
1.15      nicm     1367: {
1.75      nicm     1368:        char             ch, *buf;
                   1369:        const char      *ptr;
1.84      nicm     1370:        int              replaced;
                   1371:        size_t           len;
1.15      nicm     1372:
1.76      nicm     1373:        if (strchr(template, '%') == NULL)
1.15      nicm     1374:                return (xstrdup(template));
                   1375:
                   1376:        buf = xmalloc(1);
                   1377:        *buf = '\0';
                   1378:        len = 0;
                   1379:        replaced = 0;
                   1380:
                   1381:        ptr = template;
                   1382:        while (*ptr != '\0') {
                   1383:                switch (ch = *ptr++) {
                   1384:                case '%':
                   1385:                        if (*ptr < '1' || *ptr > '9' || *ptr - '0' != idx) {
                   1386:                                if (*ptr != '%' || replaced)
                   1387:                                        break;
                   1388:                                replaced = 1;
                   1389:                        }
                   1390:                        ptr++;
                   1391:
                   1392:                        len += strlen(s);
1.98      nicm     1393:                        buf = xrealloc(buf, len + 1);
1.15      nicm     1394:                        strlcat(buf, s, len + 1);
                   1395:                        continue;
                   1396:                }
1.98      nicm     1397:                buf = xrealloc(buf, len + 2);
1.15      nicm     1398:                buf[len++] = ch;
                   1399:                buf[len] = '\0';
                   1400:        }
                   1401:
                   1402:        return (buf);
1.1       nicm     1403: }