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Annotation of src/usr.bin/tmux/cmd-respawn-window.c, Revision 1.21

1.21    ! nicm        1: /* $OpenBSD: cmd-respawn-window.c,v 1.20 2013/10/10 12:29:53 nicm Exp $ */
1.1       nicm        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:
1.15      nicm       21: #include <stdlib.h>
1.1       nicm       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:
1.17      nicm       30: enum cmd_retval         cmd_respawn_window_exec(struct cmd *, struct cmd_q *);
1.1       nicm       31:
                     32: const struct cmd_entry cmd_respawn_window_entry = {
                     33:        "respawn-window", "respawnw",
1.13      nicm       34:        "kt:", 0, 1,
1.1       nicm       35:        "[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
1.13      nicm       36:        0,
                     37:        NULL,
                     38:        cmd_respawn_window_exec
1.1       nicm       39: };
                     40:
1.16      nicm       41: enum cmd_retval
1.17      nicm       42: cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
1.1       nicm       43: {
1.13      nicm       44:        struct args             *args = self->args;
1.1       nicm       45:        struct winlink          *wl;
                     46:        struct window           *w;
                     47:        struct window_pane      *wp;
                     48:        struct session          *s;
1.6       nicm       49:        struct environ           env;
1.21    ! nicm       50:        const char              *cmd, *path;
1.1       nicm       51:        char                    *cause;
1.21    ! nicm       52:        struct environ_entry    *envent;
1.1       nicm       53:
1.17      nicm       54:        if ((wl = cmd_find_window(cmdq, args_get(args, 't'), &s)) == NULL)
1.16      nicm       55:                return (CMD_RETURN_ERROR);
1.1       nicm       56:        w = wl->window;
                     57:
1.13      nicm       58:        if (!args_has(self->args, 'k')) {
1.1       nicm       59:                TAILQ_FOREACH(wp, &w->panes, entry) {
                     60:                        if (wp->fd == -1)
                     61:                                continue;
1.17      nicm       62:                        cmdq_error(cmdq,
1.1       nicm       63:                            "window still active: %s:%d", s->name, wl->idx);
1.16      nicm       64:                        return (CMD_RETURN_ERROR);
1.1       nicm       65:                }
                     66:        }
                     67:
1.6       nicm       68:        environ_init(&env);
                     69:        environ_copy(&global_environ, &env);
                     70:        environ_copy(&s->environ, &env);
                     71:        server_fill_environ(s, &env);
1.1       nicm       72:
                     73:        wp = TAILQ_FIRST(&w->panes);
                     74:        TAILQ_REMOVE(&w->panes, wp, entry);
1.3       nicm       75:        layout_free(w);
1.12      nicm       76:        window_destroy_panes(w);
1.1       nicm       77:        TAILQ_INSERT_HEAD(&w->panes, wp, entry);
                     78:        window_pane_resize(wp, w->sx, w->sy);
1.13      nicm       79:        if (args->argc != 0)
                     80:                cmd = args->argv[0];
                     81:        else
                     82:                cmd = NULL;
1.21    ! nicm       83:
        !            84:        path = NULL;
        !            85:        if (cmdq->client != NULL && cmdq->client->session == NULL)
        !            86:                envent = environ_find(&cmdq->client->environ, "PATH");
        !            87:        else
        !            88:                envent = environ_find(&s->environ, "PATH");
        !            89:        if (envent != NULL)
        !            90:                path = envent->value;
        !            91:
        !            92:        if (window_pane_spawn(wp, cmd, path, NULL, -1, &env, s->tio,
        !            93:            &cause) != 0) {
1.17      nicm       94:                cmdq_error(cmdq, "respawn window failed: %s", cause);
1.15      nicm       95:                free(cause);
1.6       nicm       96:                environ_free(&env);
1.10      nicm       97:                server_destroy_pane(wp);
1.16      nicm       98:                return (CMD_RETURN_ERROR);
1.1       nicm       99:        }
1.18      nicm      100:        layout_init(w, wp);
1.14      nicm      101:        window_pane_reset_mode(wp);
1.1       nicm      102:        screen_reinit(&wp->base);
1.14      nicm      103:        input_init(wp);
1.4       nicm      104:        window_set_active_pane(w, wp);
1.1       nicm      105:
                    106:        recalculate_sizes();
                    107:        server_redraw_window(w);
                    108:
1.6       nicm      109:        environ_free(&env);
1.16      nicm      110:        return (CMD_RETURN_NORMAL);
1.1       nicm      111: }