/* $OpenBSD: cmd-kill-window.c,v 1.30 2026/06/09 12:57:40 nicm Exp $ */

/*
 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * 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 "tmux.h"

/*
 * Destroy window.
 */

static enum cmd_retval  cmd_kill_window_exec(struct cmd *, struct cmdq_item *);
static enum cmd_retval  cmd_kill_window_all(struct cmdq_item *, const char *);
static int              cmd_kill_window_filter(struct cmdq_item *,
                            struct session *, struct winlink *, const char *);

const struct cmd_entry cmd_kill_window_entry = {
        .name = "kill-window",
        .alias = "killw",

        .args = { "af:t:", 0, 0, NULL },
        .usage = "[-a] [-f filter] " CMD_TARGET_WINDOW_USAGE,

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

        .flags = 0,
        .exec = cmd_kill_window_exec
};

const struct cmd_entry cmd_unlink_window_entry = {
        .name = "unlink-window",
        .alias = "unlinkw",

        .args = { "kt:", 0, 0, NULL },
        .usage = "[-k] " CMD_TARGET_WINDOW_USAGE,

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

        .flags = 0,
        .exec = cmd_kill_window_exec
};

static enum cmd_retval
cmd_kill_window_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 winlink          *wl = target->wl;
        struct window           *w = wl->window;
        struct session          *s = target->s;
        const char              *filter = args_get(args, 'f');

        if (filter != NULL && !args_has(args, 'a')) {
                cmdq_error(item, "-f only valid with -a");
                return (CMD_RETURN_ERROR);
        }

        if (cmd_get_entry(self) == &cmd_unlink_window_entry) {
                if (!args_has(args, 'k') && !session_is_linked(s, w)) {
                        cmdq_error(item, "window only linked to one session");
                        return (CMD_RETURN_ERROR);
                }
                server_unlink_window(s, wl);
                recalculate_sizes();
                return (CMD_RETURN_NORMAL);
        }

        if (args_has(args, 'a'))
                return (cmd_kill_window_all(item, filter));

        server_kill_window(wl->window, 1);
        return (CMD_RETURN_NORMAL);
}

static enum cmd_retval
cmd_kill_window_all(struct cmdq_item *item, const char *filter)
{
        struct cmd_find_state   *target = cmdq_get_target(item);
        struct session          *s = target->s;
        struct winlink          *wl = target->wl;
        struct winlink  *loop;
        u_int            found, kill_current;

        if (RB_PREV(winlinks, &s->windows, wl) == NULL &&
            RB_NEXT(winlinks, &s->windows, wl) == NULL)
                return (CMD_RETURN_NORMAL);

        /* Kill all windows except the current one. */
        do {
                found = 0;
                RB_FOREACH(loop, winlinks, &s->windows) {
                        if (loop->window != wl->window &&
                            cmd_kill_window_filter(item, s, loop, filter)) {
                                server_kill_window(loop->window, 0);
                                found++;
                                break;
                        }
                }
        } while (found != 0);

        /*
         * If the current window appears in the session more than once, kill it
         * as well if it matches the filter.
         */
        found = kill_current = 0;
        RB_FOREACH(loop, winlinks, &s->windows) {
                if (loop->window == wl->window) {
                        found++;
                        if (cmd_kill_window_filter(item, s, loop, filter))
                                kill_current = 1;
                }
        }
        if (kill_current && found > 1)
                server_kill_window(wl->window, 0);

        server_renumber_all();
        return (CMD_RETURN_NORMAL);
}

static int
cmd_kill_window_filter(struct cmdq_item *item, struct session *s,
    struct winlink *wl, const char *filter)
{
        struct format_tree      *ft;
        char                    *expanded;
        int                      flag;

        if (filter == NULL)
                return (1);

        ft = format_create(cmdq_get_client(item), item, FORMAT_NONE, 0);
        format_defaults(ft, NULL, s, wl, NULL);

        expanded = format_expand(ft, filter);
        flag = format_true(expanded);
        free(expanded);

        format_free(ft);
        return (flag);
}