cmd-respawn-window.c

   1 /* $OpenBSD$ */
   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
  30 enum cmd_retval  cmd_respawn_window_exec(struct cmd *, struct cmd_q *);
  31
  32 const struct cmd_entry cmd_respawn_window_entry = {
  33         "respawn-window", "respawnw",
  34         "kt:", 0, 1,
  35         "[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
  36         0,
  37         NULL,
  38         NULL,
  39         cmd_respawn_window_exec
  40 };
  41
  42 enum cmd_retval
  43 cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
  44 {
  45         struct args             *args = self->args;
  46         struct winlink          *wl;
  47         struct window           *w;
  48         struct window_pane      *wp;
  49         struct session          *s;
  50         struct environ           env;
  51         const char              *cmd;
  52         char                    *cause;
  53
  54         if ((wl = cmd_find_window(cmdq, args_get(args, 't'), &s)) == NULL)
  55                 return (CMD_RETURN_ERROR);
  56         w = wl->window;
  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,
  63                             "window still active: %s:%d", s->name, wl->idx);
  64                         return (CMD_RETURN_ERROR);
  65                 }
  66         }
  67
  68         environ_init(&env);
  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         if (args->argc != 0)
  80                 cmd = args->argv[0];
  81         else
  82                 cmd = NULL;
  83         if (window_pane_spawn(wp, cmd, NULL, NULL, &env, s->tio, &cause) != 0) {
  84                 cmdq_error(cmdq, "respawn window failed: %s", cause);
  85                 free(cause);
  86                 environ_free(&env);
  87                 server_destroy_pane(wp);
  88                 return (CMD_RETURN_ERROR);
  89         }
  90         layout_init(w, wp);
  91         window_pane_reset_mode(wp);
  92         screen_reinit(&wp->base);
  93         input_init(wp);
  94         window_set_active_pane(w, wp);
  95
  96         recalculate_sizes();
  97         server_redraw_window(w);
  98
  99         environ_free(&env);
 100         return (CMD_RETURN_NORMAL);
 101 }