cmd-respawn-window.c revision 1.33 
1/* $OpenBSD: cmd-respawn-window.c,v 1.33 2017/03/09 17:02:38 nicm Exp $ */
2
3/*
4 * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
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
21#include <stdlib.h>
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
30static enum cmd_retval	cmd_respawn_window_exec(struct cmd *,
31			    struct cmdq_item *);
32
33const struct cmd_entry cmd_respawn_window_entry = {
34	.name = "respawn-window",
35	.alias = "respawnw",
36
37	.args = { "kt:", 0, -1 },
38	.usage = "[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
39
40	.tflag = CMD_WINDOW,
41
42	.flags = 0,
43	.exec = cmd_respawn_window_exec
44};
45
46static enum cmd_retval
47cmd_respawn_window_exec(struct cmd *self, struct cmdq_item *item)
48{
49	struct args		*args = self->args;
50	struct session		*s = item->state.tflag.s;
51	struct winlink		*wl = item->state.tflag.wl;
52	struct window		*w = wl->window;
53	struct window_pane	*wp;
54	struct environ		*env;
55	const char		*path;
56	char		 	*cause;
57	struct environ_entry	*envent;
58
59	if (!args_has(self->args, 'k')) {
60		TAILQ_FOREACH(wp, &w->panes, entry) {
61			if (wp->fd == -1)
62				continue;
63			cmdq_error(item, "window still active: %s:%d", s->name,
64			    wl->idx);
65			return (CMD_RETURN_ERROR);
66		}
67	}
68
69	wp = TAILQ_FIRST(&w->panes);
70	TAILQ_REMOVE(&w->panes, wp, entry);
71	layout_free(w);
72	window_destroy_panes(w);
73	TAILQ_INSERT_HEAD(&w->panes, wp, entry);
74	window_pane_resize(wp, w->sx, w->sy);
75
76	path = NULL;
77	if (item->client != NULL && item->client->session == NULL)
78		envent = environ_find(item->client->environ, "PATH");
79	else
80		envent = environ_find(s->environ, "PATH");
81	if (envent != NULL)
82		path = envent->value;
83
84	env = environ_for_session(s);
85	if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, NULL, env,
86	    s->tio, &cause) != 0) {
87		cmdq_error(item, "respawn window failed: %s", cause);
88		free(cause);
89		environ_free(env);
90		server_destroy_pane(wp, 0);
91		return (CMD_RETURN_ERROR);
92	}
93	environ_free(env);
94	layout_init(w, wp);
95	window_pane_reset_mode(wp);
96	screen_reinit(&wp->base);
97	input_init(wp);
98	window_set_active_pane(w, wp);
99
100	recalculate_sizes();
101	server_redraw_window(w);
102
103	return (CMD_RETURN_NORMAL);
104}
105