/* $OpenBSD: cmd-list-windows.c,v 1.50 2026/02/27 08:25:12 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 <unistd.h>

#include "tmux.h"

/*
 * List windows on given session.
 */

#define LIST_WINDOWS_TEMPLATE                                   \
        "#{window_index}: #{window_name}#{window_raw_flags} "   \
        "(#{window_panes} panes) "                              \
        "[#{window_width}x#{window_height}] "                   \
        "[layout #{window_layout}] #{window_id}"                \
        "#{?window_active, (active),}";
#define LIST_WINDOWS_WITH_SESSION_TEMPLATE                      \
        "#{session_name}:"                                      \
        "#{window_index}: #{window_name}#{window_raw_flags} "   \
        "(#{window_panes} panes) "                              \
        "[#{window_width}x#{window_height}] "

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

const struct cmd_entry cmd_list_windows_entry = {
        .name = "list-windows",
        .alias = "lsw",

        .args = { "aF:f:O:rt:", 0, 0, NULL },
        .usage = "[-ar] [-F format] [-f filter] [-O order]"
                 CMD_TARGET_SESSION_USAGE,

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

        .flags = CMD_AFTERHOOK,
        .exec = cmd_list_windows_exec
};

static enum cmd_retval
cmd_list_windows_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, **l;
        struct session          *s;
        u_int                    i, n;
        struct format_tree      *ft;
        const char              *template, *filter;
        char                    *line, *expanded;
        int                      flag;
        struct sort_criteria     sort_crit;

        template = args_get(args, 'F');
        filter = args_get(args, 'f');

        sort_crit.order = sort_order_from_string(args_get(args, 'O'));
        if (sort_crit.order == SORT_END && args_has(args, 'O')) {
                cmdq_error(item, "invalid sort order");
                return (CMD_RETURN_ERROR);
        }
        sort_crit.reversed = args_has(args, 'r');

        if (args_has(args, 'a')) {
                l = sort_get_winlinks(&n, &sort_crit);
                if (template == NULL)
                        template = LIST_WINDOWS_WITH_SESSION_TEMPLATE;
        } else {
                l = sort_get_winlinks_session(target->s, &n, &sort_crit);
                if (template == NULL)
                        template = LIST_WINDOWS_TEMPLATE;
        }

        for (i = 0; i < n; i++) {
                wl = l[i];
                s = wl->session;
                ft = format_create(cmdq_get_client(item), item, FORMAT_NONE, 0);
                format_add(ft, "line", "%u", n);
                format_defaults(ft, NULL, s, wl, NULL);

                if (filter != NULL) {
                        expanded = format_expand(ft, filter);
                        flag = format_true(expanded);
                        free(expanded);
                } else
                        flag = 1;
                if (flag) {
                        line = format_expand(ft, template);
                        cmdq_print(item, "%s", line);
                        free(line);
                }

                format_free(ft);
        }

        return (CMD_RETURN_NORMAL);
}