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      1 /* $OpenBSD$ */
      2 
      3 /*
      4  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott (at) gmail.com>
      5  * Copyright (c) 2011 Marcel P. Partap <mpartap (at) gmx.net>
      6  *
      7  * Permission to use, copy, modify, and distribute this software for any
      8  * purpose with or without fee is hereby granted, provided that the above
      9  * copyright notice and this permission notice appear in all copies.
     10  *
     11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     15  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
     16  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
     17  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     18  */
     19 
     20 #include <sys/types.h>
     21 
     22 #include <stdlib.h>
     23 #include <string.h>
     24 
     25 #include "tmux.h"
     26 
     27 /*
     28  * Respawn a pane (restart the command). Kill existing if -k given.
     29  */
     30 
     31 static enum cmd_retval	cmd_respawn_pane_exec(struct cmd *, struct cmdq_item *);
     32 
     33 const struct cmd_entry cmd_respawn_pane_entry = {
     34 	.name = "respawn-pane",
     35 	.alias = "respawnp",
     36 
     37 	.args = { "c:e:kt:", 0, -1, NULL },
     38 	.usage = "[-k] [-c start-directory] [-e environment] "
     39 		 CMD_TARGET_PANE_USAGE " [shell-command [argument ...]]",
     40 
     41 	.target = { 't', CMD_FIND_PANE, 0 },
     42 
     43 	.flags = 0,
     44 	.exec = cmd_respawn_pane_exec
     45 };
     46 
     47 static enum cmd_retval
     48 cmd_respawn_pane_exec(struct cmd *self, struct cmdq_item *item)
     49 {
     50 	struct args		*args = cmd_get_args(self);
     51 	struct cmd_find_state	*target = cmdq_get_target(item);
     52 	struct spawn_context	 sc = { 0 };
     53 	struct session		*s = target->s;
     54 	struct winlink		*wl = target->wl;
     55 	struct window_pane	*wp = target->wp;
     56 	char			*cause = NULL;
     57 	struct args_value	*av;
     58 
     59 	sc.item = item;
     60 	sc.s = s;
     61 	sc.wl = wl;
     62 
     63 	sc.wp0 = wp;
     64 
     65 	args_to_vector(args, &sc.argc, &sc.argv);
     66 	sc.environ = environ_create();
     67 
     68 	av = args_first_value(args, 'e');
     69 	while (av != NULL) {
     70 		environ_put(sc.environ, av->string, 0);
     71 		av = args_next_value(av);
     72 	}
     73 
     74 	sc.idx = -1;
     75 	sc.cwd = args_get(args, 'c');
     76 
     77 	sc.flags = SPAWN_RESPAWN;
     78 	if (args_has(args, 'k'))
     79 		sc.flags |= SPAWN_KILL;
     80 
     81 	if (spawn_pane(&sc, &cause) == NULL) {
     82 		cmdq_error(item, "respawn pane failed: %s", cause);
     83 		free(cause);
     84 		if (sc.argv != NULL)
     85 			cmd_free_argv(sc.argc, sc.argv);
     86 		environ_free(sc.environ);
     87 		return (CMD_RETURN_ERROR);
     88 	}
     89 
     90 	wp->flags |= PANE_REDRAW;
     91 	server_redraw_window_borders(wp->window);
     92 	server_status_window(wp->window);
     93 
     94 	if (sc.argv != NULL)
     95 		cmd_free_argv(sc.argc, sc.argv);
     96 	environ_free(sc.environ);
     97 	return (CMD_RETURN_NORMAL);
     98 }
     99