cmd-respawn-pane.c

   1 /* $Id$ */
   2
   3 /*
   4  * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
   5  * Copyright (c) 2011 Marcel P. Partap <mpartap@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 <unistd.h>
  23
  24 #include "tmux.h"
  25
  26 /*
  27  * Respawn a pane (restart the command). Kill existing if -k given.
  28  */
  29
  30 int     cmd_respawn_pane_exec(struct cmd *, struct cmd_ctx *);
  31
  32 const struct cmd_entry cmd_respawn_pane_entry = {
  33         "respawn-pane", "respawnp",
  34         "kt:", 0, 1,
  35         "[-k] " CMD_TARGET_PANE_USAGE " [command]",
  36         0,
  37         NULL,
  38         NULL,
  39         cmd_respawn_pane_exec
  40 };
  41
  42 int
  43 cmd_respawn_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
  44 {
  45         struct args             *args = self->args;
  46         struct winlink          *wl;
  47         struct window           *w;
  48         struct window_pane      *wp;
  49         u_int                    hlimit;
  50         struct session          *s;
  51         struct environ           env;
  52         const char              *cmd;
  53         char                    *cause;
  54
  55         if ((wl = cmd_find_pane(ctx, args_get(args, 't'), &s, &wp)) == NULL)
  56                 return (-1);
  57         w = wl->window;
  58
  59         if (!args_has(self->args, 'k') && wp->fd != -1) {
  60                 ctx->error(ctx, "pane still active: %s:%u.%u",
  61                     s->name, wl->idx, window_pane_index(w, wp));
  62                 return (-1);
  63         }
  64
  65         environ_init(&env);
  66         environ_copy(&global_environ, &env);
  67         environ_copy(&s->environ, &env);
  68         server_fill_environ(s, &env);
  69
  70         window_pane_reset_mode(wp);
  71         screen_free(&wp->base);
  72         hlimit = options_get_number(&s->options, "history-limit");
  73         screen_init(&wp->base, wp->sx, wp->sy, hlimit);
  74         wp->screen = &wp->base;
  75         input_init(wp);
  76
  77         if (args->argc != 0)
  78                 cmd = args->argv[0];
  79         else
  80                 cmd = NULL;
  81         if (window_pane_spawn(wp, cmd, NULL, NULL, &env, s->tio, &cause) != 0) {
  82                 ctx->error(ctx, "respawn pane failed: %s", cause);
  83                 xfree(cause);
  84                 environ_free(&env);
  85                 return (-1);
  86         }
  87         wp->flags |= PANE_REDRAW;
  88         server_status_window(w);
  89
  90         environ_free(&env);
  91         return (0);
  92 }