/* $OpenBSD$ */

/*
* Copyright (c) 2007 Nicholas Marriott <[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/

#include <sys/types.h>

#include <stdlib.h>
#include <string.h>

#include "tmux.h"

/*
* Switch client to a different session.
*/

static enum cmd_retval  cmd_switch_client_exec(struct cmd *,
                           struct cmdq_item *);

const struct cmd_entry cmd_switch_client_entry = {
       .name = "switch-client",
       .alias = "switchc",

       .args = { "lc:EFnpt:rT:Z", 0, 0, NULL },
       .usage = "[-ElnprZ] [-c target-client] [-t target-session] "
                "[-T key-table]",

       /* -t is special */

       .flags = CMD_READONLY|CMD_CLIENT_CFLAG,
       .exec = cmd_switch_client_exec
};

static enum cmd_retval
cmd_switch_client_exec(struct cmd *self, struct cmdq_item *item)
{
       struct args             *args = cmd_get_args(self);
       struct cmd_find_state   *current = cmdq_get_current(item);
       struct cmd_find_state    target;
       const char              *tflag = args_get(args, 't');
       enum cmd_find_type       type;
       int                      flags;
       struct client           *tc = cmdq_get_target_client(item);
       struct session          *s;
       struct winlink          *wl;
       struct window           *w;
       struct window_pane      *wp;
       const char              *tablename;
       struct key_table        *table;

       if (tflag != NULL && tflag[strcspn(tflag, ":.%")] != '\0') {
               type = CMD_FIND_PANE;
               flags = 0;
       } else {
               type = CMD_FIND_SESSION;
               flags = CMD_FIND_PREFER_UNATTACHED;
       }
       if (cmd_find_target(&target, item, tflag, type, flags) != 0)
               return (CMD_RETURN_ERROR);
       s = target.s;
       wl = target.wl;
       wp = target.wp;

       if (args_has(args, 'r')) {
               if (tc->flags & CLIENT_READONLY)
                       tc->flags &= ~(CLIENT_READONLY|CLIENT_IGNORESIZE);
               else
                       tc->flags |= (CLIENT_READONLY|CLIENT_IGNORESIZE);
       }

       tablename = args_get(args, 'T');
       if (tablename != NULL) {
               table = key_bindings_get_table(tablename, 0);
               if (table == NULL) {
                       cmdq_error(item, "table %s doesn't exist", tablename);
                       return (CMD_RETURN_ERROR);
               }
               table->references++;
               key_bindings_unref_table(tc->keytable);
               tc->keytable = table;
               return (CMD_RETURN_NORMAL);
       }

       if (args_has(args, 'n')) {
               if ((s = session_next_session(tc->session)) == NULL) {
                       cmdq_error(item, "can't find next session");
                       return (CMD_RETURN_ERROR);
               }
       } else if (args_has(args, 'p')) {
               if ((s = session_previous_session(tc->session)) == NULL) {
                       cmdq_error(item, "can't find previous session");
                       return (CMD_RETURN_ERROR);
               }
       } else if (args_has(args, 'l')) {
               if (tc->last_session != NULL && session_alive(tc->last_session))
                       s = tc->last_session;
               else
                       s = NULL;
               if (s == NULL) {
                       cmdq_error(item, "can't find last session");
                       return (CMD_RETURN_ERROR);
               }
       } else {
               if (cmdq_get_client(item) == NULL)
                       return (CMD_RETURN_NORMAL);
               if (wl != NULL && wp != NULL && wp != wl->window->active) {
                       w = wl->window;
                       if (window_push_zoom(w, 0, args_has(args, 'Z')))
                               server_redraw_window(w);
                       window_redraw_active_switch(w, wp);
                       window_set_active_pane(w, wp, 1);
                       if (window_pop_zoom(w))
                               server_redraw_window(w);
               }
               if (wl != NULL) {
                       session_set_current(s, wl);
                       cmd_find_from_session(current, s, 0);
               }
       }

       if (!args_has(args, 'E'))
               environ_update(s->options, tc->environ, s->environ);

       server_client_set_session(tc, s);
       if (~cmdq_get_flags(item) & CMDQ_STATE_REPEAT)
               server_client_set_key_table(tc, NULL);

       return (CMD_RETURN_NORMAL);
}

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