/* $OpenBSD: cmd-respawn-pane.c,v 1.39 2025/04/09 07:03:04 nicm Exp $ */

/*
 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
 * Copyright (c) 2011 Marcel P. Partap <mpartap@gmx.net>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>

#include <stdlib.h>
#include <string.h>

#include "tmux.h"

/*
 * Respawn a pane (restart the command). Kill existing if -k given.
 */

static enum cmd_retval  cmd_respawn_pane_exec(struct cmd *, struct cmdq_item *);

const struct cmd_entry cmd_respawn_pane_entry = {
        .name = "respawn-pane",
        .alias = "respawnp",

        .args = { "c:e:kt:", 0, -1, NULL },
        .usage = "[-k] [-c start-directory] [-e environment] "
                 CMD_TARGET_PANE_USAGE " [shell-command [argument ...]]",

        .target = { 't', CMD_FIND_PANE, 0 },

        .flags = 0,
        .exec = cmd_respawn_pane_exec
};

static enum cmd_retval
cmd_respawn_pane_exec(struct cmd *self, struct cmdq_item *item)
{
        struct args             *args = cmd_get_args(self);
        struct cmd_find_state   *target = cmdq_get_target(item);
        struct spawn_context     sc = { 0 };
        struct session          *s = target->s;
        struct winlink          *wl = target->wl;
        struct window_pane      *wp = target->wp;
        char                    *cause = NULL;
        struct args_value       *av;

        sc.item = item;
        sc.s = s;
        sc.wl = wl;

        sc.wp0 = wp;

        args_to_vector(args, &sc.argc, &sc.argv);
        sc.environ = environ_create();

        av = args_first_value(args, 'e');
        while (av != NULL) {
                environ_put(sc.environ, av->string, 0);
                av = args_next_value(av);
        }

        sc.idx = -1;
        sc.cwd = args_get(args, 'c');

        sc.flags = SPAWN_RESPAWN;
        if (args_has(args, 'k'))
                sc.flags |= SPAWN_KILL;

        if (spawn_pane(&sc, &cause) == NULL) {
                cmdq_error(item, "respawn pane failed: %s", cause);
                free(cause);
                if (sc.argv != NULL)
                        cmd_free_argv(sc.argc, sc.argv);
                environ_free(sc.environ);
                return (CMD_RETURN_ERROR);
        }

        wp->flags |= PANE_REDRAW;
        server_redraw_window_borders(wp->window);
        server_status_window(wp->window);

        if (sc.argv != NULL)
                cmd_free_argv(sc.argc, sc.argv);
        environ_free(sc.environ);
        return (CMD_RETURN_NORMAL);
}