cmd-respawn-window.c revision 1.27 
1/* $OpenBSD: cmd-respawn-window.c,v 1.27 2015/12/13 21:53:57 nicm Exp $ */
2
3/*
4 * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
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
30enum cmd_retval	 cmd_respawn_window_exec(struct cmd *, struct cmd_q *);
31
32const struct cmd_entry cmd_respawn_window_entry = {
33	.name = "respawn-window",
34	.alias = "respawnw",
35
36	.args = { "kt:", 0, -1 },
37	.usage = "[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
38
39	.flags = CMD_WINDOW_T,
40	.exec = cmd_respawn_window_exec
41};
42
43enum cmd_retval
44cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
45{
46	struct args		*args = self->args;
47	struct session		*s = cmdq->state.tflag.s;
48	struct winlink		*wl = cmdq->state.tflag.wl;
49	struct window		*w = wl->window;
50	struct window_pane	*wp;
51	struct environ		*env;
52	const char		*path;
53	char		 	*cause;
54	struct environ_entry	*envent;
55
56	if (!args_has(self->args, 'k')) {
57		TAILQ_FOREACH(wp, &w->panes, entry) {
58			if (wp->fd == -1)
59				continue;
60			cmdq_error(cmdq, "window still active: %s:%d", s->name,
61			    wl->idx);
62			return (CMD_RETURN_ERROR);
63		}
64	}
65
66	env = environ_create();
67	environ_copy(global_environ, env);
68	environ_copy(s->environ, env);
69	server_fill_environ(s, env);
70
71	wp = TAILQ_FIRST(&w->panes);
72	TAILQ_REMOVE(&w->panes, wp, entry);
73	layout_free(w);
74	window_destroy_panes(w);
75	TAILQ_INSERT_HEAD(&w->panes, wp, entry);
76	window_pane_resize(wp, w->sx, w->sy);
77
78	path = NULL;
79	if (cmdq->client != NULL && cmdq->client->session == NULL)
80		envent = environ_find(cmdq->client->environ, "PATH");
81	else
82		envent = environ_find(s->environ, "PATH");
83	if (envent != NULL)
84		path = envent->value;
85
86	if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, NULL, env,
87	    s->tio, &cause) != 0) {
88		cmdq_error(cmdq, "respawn window failed: %s", cause);
89		free(cause);
90		environ_free(env);
91		server_destroy_pane(wp);
92		return (CMD_RETURN_ERROR);
93	}
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	environ_free(env);
104	return (CMD_RETURN_NORMAL);
105}
106