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tmux 2.4

/* $OpenBSD$ */

/*
 * Copyright (c) 2009 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"

/*
 * List panes on given window.
 */

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

static void	cmd_list_panes_server(struct cmd *, struct cmdq_item *);
static void	cmd_list_panes_session(struct cmd *, struct session *,
		    struct cmdq_item *, int);
static void	cmd_list_panes_window(struct cmd *, struct session *,
		    struct winlink *, struct cmdq_item *, int);

const struct cmd_entry cmd_list_panes_entry = {
	.name = "list-panes",
	.alias = "lsp",

	.args = { "asF:t:", 0, 0 },
	.usage = "[-as] [-F format] " CMD_TARGET_WINDOW_USAGE,

	.tflag = CMD_WINDOW,

	.flags = CMD_AFTERHOOK,
	.exec = cmd_list_panes_exec
};

static enum cmd_retval
cmd_list_panes_exec(struct cmd *self, struct cmdq_item *item)
{
	struct args	*args = self->args;
	struct session	*s = item->state.tflag.s;
	struct winlink	*wl = item->state.tflag.wl;

	if (args_has(args, 'a'))
		cmd_list_panes_server(self, item);
	else if (args_has(args, 's'))
		cmd_list_panes_session(self, s, item, 1);
	else
		cmd_list_panes_window(self, s, wl, item, 0);

	return (CMD_RETURN_NORMAL);
}

static void
cmd_list_panes_server(struct cmd *self, struct cmdq_item *item)
{
	struct session	*s;

	RB_FOREACH(s, sessions, &sessions)
		cmd_list_panes_session(self, s, item, 2);
}

static void
cmd_list_panes_session(struct cmd *self, struct session *s,
    struct cmdq_item *item, int type)
{
	struct winlink	*wl;

	RB_FOREACH(wl, winlinks, &s->windows)
		cmd_list_panes_window(self, s, wl, item, type);
}

static void
cmd_list_panes_window(struct cmd *self, struct session *s, struct winlink *wl,
    struct cmdq_item *item, int type)
{
	struct args		*args = self->args;
	struct window_pane	*wp;
	u_int			 n;
	struct format_tree	*ft;
	const char		*template;
	char			*line;

	template = args_get(args, 'F');
	if (template == NULL) {
		switch (type) {
		case 0:
			template = "#{pane_index}: "
			    "[#{pane_width}x#{pane_height}] [history "
			    "#{history_size}/#{history_limit}, "
			    "#{history_bytes} bytes] #{pane_id}"
			    "#{?pane_active, (active),}#{?pane_dead, (dead),}";
			break;
		case 1:
			template = "#{window_index}.#{pane_index}: "
			    "[#{pane_width}x#{pane_height}] [history "
			    "#{history_size}/#{history_limit}, "
			    "#{history_bytes} bytes] #{pane_id}"
			    "#{?pane_active, (active),}#{?pane_dead, (dead),}";
			break;
		case 2:
			template = "#{session_name}:#{window_index}."
			    "#{pane_index}: [#{pane_width}x#{pane_height}] "
			    "[history #{history_size}/#{history_limit}, "
			    "#{history_bytes} bytes] #{pane_id}"
			    "#{?pane_active, (active),}#{?pane_dead, (dead),}";
			break;
		}
	}

	n = 0;
	TAILQ_FOREACH(wp, &wl->window->panes, entry) {
		ft = format_create(item, FORMAT_NONE, 0);
		format_add(ft, "line", "%u", n);
		format_defaults(ft, NULL, s, wl, wp);

		line = format_expand(ft, template);
		cmdq_print(item, "%s", line);
		free(line);

		format_free(ft);
		n++;
	}
}