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Annotation of src/usr.bin/tmux/cmd-respawn-window.c, Revision 1.36

1.36    ! nicm        1: /* $OpenBSD: cmd-respawn-window.c,v 1.35 2017/04/25 15:35:10 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.30      nicm        4:  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        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:
1.15      nicm       21: #include <stdlib.h>
1.1       nicm       22: #include <unistd.h>
                     23:
                     24: #include "tmux.h"
                     25:
                     26: /*
                     27:  * Respawn a window (restart the command). Kill existing if -k given.
                     28:  */
                     29:
1.32      nicm       30: static enum cmd_retval cmd_respawn_window_exec(struct cmd *,
                     31:                            struct cmdq_item *);
1.1       nicm       32:
                     33: const struct cmd_entry cmd_respawn_window_entry = {
1.27      nicm       34:        .name = "respawn-window",
                     35:        .alias = "respawnw",
                     36:
1.36    ! nicm       37:        .args = { "c:kt:", 0, -1 },
        !            38:        .usage = "[-c start-directory] [-k] " CMD_TARGET_WINDOW_USAGE
        !            39:                 " [command]",
1.27      nicm       40:
1.34      nicm       41:        .target = { 't', CMD_FIND_WINDOW, 0 },
1.28      nicm       42:
                     43:        .flags = 0,
1.27      nicm       44:        .exec = cmd_respawn_window_exec
1.1       nicm       45: };
                     46:
1.31      nicm       47: static enum cmd_retval
1.32      nicm       48: cmd_respawn_window_exec(struct cmd *self, struct cmdq_item *item)
1.1       nicm       49: {
1.13      nicm       50:        struct args             *args = self->args;
1.34      nicm       51:        struct session          *s = item->target.s;
                     52:        struct winlink          *wl = item->target.wl;
1.26      nicm       53:        struct window           *w = wl->window;
1.1       nicm       54:        struct window_pane      *wp;
1.36    ! nicm       55:        struct client           *c = cmd_find_client(item, NULL, 1);
1.24      nicm       56:        struct environ          *env;
1.36    ! nicm       57:        const char              *path = NULL, *cp;
        !            58:        char                    *cause, *cwd = NULL;
1.21      nicm       59:        struct environ_entry    *envent;
1.1       nicm       60:
1.13      nicm       61:        if (!args_has(self->args, 'k')) {
1.1       nicm       62:                TAILQ_FOREACH(wp, &w->panes, entry) {
                     63:                        if (wp->fd == -1)
                     64:                                continue;
1.32      nicm       65:                        cmdq_error(item, "window still active: %s:%d", s->name,
1.26      nicm       66:                            wl->idx);
1.16      nicm       67:                        return (CMD_RETURN_ERROR);
1.1       nicm       68:                }
                     69:        }
                     70:
                     71:        wp = TAILQ_FIRST(&w->panes);
                     72:        TAILQ_REMOVE(&w->panes, wp, entry);
1.3       nicm       73:        layout_free(w);
1.12      nicm       74:        window_destroy_panes(w);
1.1       nicm       75:        TAILQ_INSERT_HEAD(&w->panes, wp, entry);
                     76:        window_pane_resize(wp, w->sx, w->sy);
1.21      nicm       77:
1.32      nicm       78:        if (item->client != NULL && item->client->session == NULL)
                     79:                envent = environ_find(item->client->environ, "PATH");
1.21      nicm       80:        else
1.24      nicm       81:                envent = environ_find(s->environ, "PATH");
1.21      nicm       82:        if (envent != NULL)
                     83:                path = envent->value;
                     84:
1.36    ! nicm       85:        if ((cp = args_get(args, 'c')) != NULL)
        !            86:                cwd = format_single(item, cp, c, s, NULL, NULL);
        !            87:
1.35      nicm       88:        env = environ_for_session(s, 0);
1.36    ! nicm       89:        if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, cwd, env,
1.22      nicm       90:            s->tio, &cause) != 0) {
1.32      nicm       91:                cmdq_error(item, "respawn window failed: %s", cause);
1.15      nicm       92:                free(cause);
1.24      nicm       93:                environ_free(env);
1.36    ! nicm       94:                free(cwd);
1.29      nicm       95:                server_destroy_pane(wp, 0);
1.16      nicm       96:                return (CMD_RETURN_ERROR);
1.1       nicm       97:        }
1.33      nicm       98:        environ_free(env);
1.36    ! nicm       99:        free(cwd);
        !           100:
1.18      nicm      101:        layout_init(w, wp);
1.14      nicm      102:        window_pane_reset_mode(wp);
1.1       nicm      103:        screen_reinit(&wp->base);
1.14      nicm      104:        input_init(wp);
1.4       nicm      105:        window_set_active_pane(w, wp);
1.1       nicm      106:
                    107:        recalculate_sizes();
                    108:        server_redraw_window(w);
                    109:
1.16      nicm      110:        return (CMD_RETURN_NORMAL);
1.1       nicm      111: }