cmd-respawn-window.c revision 1.31 
1/* $OpenBSD: cmd-respawn-window.c,v 1.31 2016/10/10 21:51:39 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 *, 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	.tflag = CMD_WINDOW,
40
41	.flags = 0,
42	.exec = cmd_respawn_window_exec
43};
44
45static enum cmd_retval
46cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
47{
48	struct args		*args = self->args;
49	struct session		*s = cmdq->state.tflag.s;
50	struct winlink		*wl = cmdq->state.tflag.wl;
51	struct window		*w = wl->window;
52	struct window_pane	*wp;
53	struct environ		*env;
54	const char		*path;
55	char		 	*cause;
56	struct environ_entry	*envent;
57
58	if (!args_has(self->args, 'k')) {
59		TAILQ_FOREACH(wp, &w->panes, entry) {
60			if (wp->fd == -1)
61				continue;
62			cmdq_error(cmdq, "window still active: %s:%d", s->name,
63			    wl->idx);
64			return (CMD_RETURN_ERROR);
65		}
66	}
67
68	env = environ_create();
69	environ_copy(global_environ, env);
70	environ_copy(s->environ, env);
71	server_fill_environ(s, env);
72
73	wp = TAILQ_FIRST(&w->panes);
74	TAILQ_REMOVE(&w->panes, wp, entry);
75	layout_free(w);
76	window_destroy_panes(w);
77	TAILQ_INSERT_HEAD(&w->panes, wp, entry);
78	window_pane_resize(wp, w->sx, w->sy);
79
80	path = NULL;
81	if (cmdq->client != NULL && cmdq->client->session == NULL)
82		envent = environ_find(cmdq->client->environ, "PATH");
83	else
84		envent = environ_find(s->environ, "PATH");
85	if (envent != NULL)
86		path = envent->value;
87
88	if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, NULL, env,
89	    s->tio, &cause) != 0) {
90		cmdq_error(cmdq, "respawn window failed: %s", cause);
91		free(cause);
92		environ_free(env);
93		server_destroy_pane(wp, 0);
94		return (CMD_RETURN_ERROR);
95	}
96	layout_init(w, wp);
97	window_pane_reset_mode(wp);
98	screen_reinit(&wp->base);
99	input_init(wp);
100	window_set_active_pane(w, wp);
101
102	recalculate_sizes();
103	server_redraw_window(w);
104
105	environ_free(env);
106	return (CMD_RETURN_NORMAL);
107}
108