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

1.1     ! misho       1: /* $OpenBSD$ */
        !             2: 
        !             3: /*
        !             4:  * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
        !             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: static enum cmd_retval cmd_respawn_window_exec(struct cmd *,
        !            31:                            struct cmdq_item *);
        !            32: 
        !            33: const struct cmd_entry cmd_respawn_window_entry = {
        !            34:        .name = "respawn-window",
        !            35:        .alias = "respawnw",
        !            36: 
        !            37:        .args = { "kt:", 0, -1 },
        !            38:        .usage = "[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
        !            39: 
        !            40:        .tflag = CMD_WINDOW,
        !            41: 
        !            42:        .flags = 0,
        !            43:        .exec = cmd_respawn_window_exec
        !            44: };
        !            45: 
        !            46: static enum cmd_retval
        !            47: cmd_respawn_window_exec(struct cmd *self, struct cmdq_item *item)
        !            48: {
        !            49:        struct args             *args = self->args;
        !            50:        struct session          *s = item->state.tflag.s;
        !            51:        struct winlink          *wl = item->state.tflag.wl;
        !            52:        struct window           *w = wl->window;
        !            53:        struct window_pane      *wp;
        !            54:        struct environ          *env;
        !            55:        const char              *path;
        !            56:        char                    *cause;
        !            57:        struct environ_entry    *envent;
        !            58: 
        !            59:        if (!args_has(self->args, 'k')) {
        !            60:                TAILQ_FOREACH(wp, &w->panes, entry) {
        !            61:                        if (wp->fd == -1)
        !            62:                                continue;
        !            63:                        cmdq_error(item, "window still active: %s:%d", s->name,
        !            64:                            wl->idx);
        !            65:                        return (CMD_RETURN_ERROR);
        !            66:                }
        !            67:        }
        !            68: 
        !            69:        wp = TAILQ_FIRST(&w->panes);
        !            70:        TAILQ_REMOVE(&w->panes, wp, entry);
        !            71:        layout_free(w);
        !            72:        window_destroy_panes(w);
        !            73:        TAILQ_INSERT_HEAD(&w->panes, wp, entry);
        !            74:        window_pane_resize(wp, w->sx, w->sy);
        !            75: 
        !            76:        path = NULL;
        !            77:        if (item->client != NULL && item->client->session == NULL)
        !            78:                envent = environ_find(item->client->environ, "PATH");
        !            79:        else
        !            80:                envent = environ_find(s->environ, "PATH");
        !            81:        if (envent != NULL)
        !            82:                path = envent->value;
        !            83: 
        !            84:        env = environ_for_session(s);
        !            85:        if (window_pane_spawn(wp, args->argc, args->argv, path, NULL, NULL, env,
        !            86:            s->tio, &cause) != 0) {
        !            87:                cmdq_error(item, "respawn window failed: %s", cause);
        !            88:                free(cause);
        !            89:                environ_free(env);
        !            90:                server_destroy_pane(wp, 0);
        !            91:                return (CMD_RETURN_ERROR);
        !            92:        }
        !            93:        environ_free(env);
        !            94:        layout_init(w, wp);
        !            95:        window_pane_reset_mode(wp);
        !            96:        screen_reinit(&wp->base);
        !            97:        input_init(wp);
        !            98:        window_set_active_pane(w, wp);
        !            99: 
        !           100:        recalculate_sizes();
        !           101:        server_redraw_window(w);
        !           102: 
        !           103:        return (CMD_RETURN_NORMAL);
        !           104: }