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Annotation of embedaddon/tmux/cmd-respawn-pane.c, revision 1.1

1.1     ! misho       1: /* $OpenBSD$ */
        !             2: 
        !             3: /*
        !             4:  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
        !             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 <stdlib.h>
        !            23: #include <unistd.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 = { "kt:", 0, -1 },
        !            38:        .usage = "[-k] " CMD_TARGET_PANE_USAGE " [command]",
        !            39: 
        !            40:        .tflag = CMD_PANE,
        !            41: 
        !            42:        .flags = 0,
        !            43:        .exec = cmd_respawn_pane_exec
        !            44: };
        !            45: 
        !            46: static enum cmd_retval
        !            47: cmd_respawn_pane_exec(struct cmd *self, struct cmdq_item *item)
        !            48: {
        !            49:        struct args             *args = self->args;
        !            50:        struct winlink          *wl = item->state.tflag.wl;
        !            51:        struct window           *w = wl->window;
        !            52:        struct window_pane      *wp = item->state.tflag.wp;
        !            53:        struct session          *s = item->state.tflag.s;
        !            54:        struct environ          *env;
        !            55:        const char              *path;
        !            56:        char                    *cause;
        !            57:        u_int                    idx;
        !            58:        struct environ_entry    *envent;
        !            59: 
        !            60:        if (!args_has(self->args, 'k') && wp->fd != -1) {
        !            61:                if (window_pane_index(wp, &idx) != 0)
        !            62:                        fatalx("index not found");
        !            63:                cmdq_error(item, "pane still active: %s:%d.%u",
        !            64:                    s->name, wl->idx, idx);
        !            65:                return (CMD_RETURN_ERROR);
        !            66:        }
        !            67: 
        !            68:        window_pane_reset_mode(wp);
        !            69:        screen_reinit(&wp->base);
        !            70:        input_init(wp);
        !            71: 
        !            72:        path = NULL;
        !            73:        if (item->client != NULL && item->client->session == NULL)
        !            74:                envent = environ_find(item->client->environ, "PATH");
        !            75:        else
        !            76:                envent = environ_find(s->environ, "PATH");
        !            77:        if (envent != NULL)
        !            78:                path = envent->value;
        !            79: 
        !            80:        env = environ_for_session(s);
        !            81:        if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, NULL, env,
        !            82:            s->tio, &cause) != 0) {
        !            83:                cmdq_error(item, "respawn pane failed: %s", cause);
        !            84:                free(cause);
        !            85:                environ_free(env);
        !            86:                return (CMD_RETURN_ERROR);
        !            87:        }
        !            88:        environ_free(env);
        !            89: 
        !            90:        wp->flags |= PANE_REDRAW;
        !            91:        server_status_window(w);
        !            92: 
        !            93:        return (CMD_RETURN_NORMAL);
        !            94: }