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commands and allow a command to block execution of subsequent commands. This allows run-shell and if-shell to be synchronous which has been much requested. Each client has a default command queue and commands are consumed one at a time from it. A command may suspend execution from the queue by returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() - for example run-shell does this from the callback that is fired after the job is freed. When the command queue becomes empty, command clients are automatically exited (unless attaching). A callback is also fired - this is used for nested commands in, for example, if-shell which can block execution of the client's cmdq until a new cmdq becomes empty. Also merge all the old error/info/print functions together and lose the old curclient/cmdclient distinction - a cmdq is bound to one client (or none if in the configuration file), this is a command client if c->session is NULL otherwise an attached client.
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <stdlib.h>
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#include "tmux.h"
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/*
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* Attach existing session to the current terminal.
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*/
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enum cmd_retval cmd_attach_session_exec(struct cmd *, struct cmd_q *);
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const struct cmd_entry cmd_attach_session_entry = {
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"attach-session", "attach",
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"drt:", 0, 0,
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"[-dr] " CMD_TARGET_SESSION_USAGE,
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CMD_CANTNEST|CMD_STARTSERVER|CMD_SENDENVIRON,
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NULL,
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NULL,
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cmd_attach_session_exec
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};
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enum cmd_retval
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cmd_attach_session_exec(struct cmd *self, struct cmd_q *cmdq)
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{
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struct args *args = self->args;
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struct session *s;
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struct client *c;
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const char *update;
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char *cause;
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u_int i;
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if (RB_EMPTY(&sessions)) {
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cmdq_error(cmdq, "no sessions");
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return (CMD_RETURN_ERROR);
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}
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if ((s = cmd_find_session(cmdq, args_get(args, 't'), 1)) == NULL)
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return (CMD_RETURN_ERROR);
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if (cmdq->client == NULL)
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return (CMD_RETURN_NORMAL);
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if (cmdq->client->session != NULL) {
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if (args_has(self->args, 'd')) {
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/*
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* Can't use server_write_session in case attaching to
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* the same session as currently attached to.
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*/
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for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
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c = ARRAY_ITEM(&clients, i);
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if (c == NULL || c->session != s)
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continue;
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if (c == cmdq->client)
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continue;
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server_write_client(c, MSG_DETACH, NULL, 0);
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}
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}
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cmdq->client->session = s;
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notify_attached_session_changed(cmdq->client);
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session_update_activity(s);
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server_redraw_client(cmdq->client);
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s->curw->flags &= ~WINLINK_ALERTFLAGS;
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} else {
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if (server_client_open(cmdq->client, s, &cause) != 0) {
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cmdq_error(cmdq, "open terminal failed: %s", cause);
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free(cause);
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return (CMD_RETURN_ERROR);
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}
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if (args_has(self->args, 'r'))
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cmdq->client->flags |= CLIENT_READONLY;
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if (args_has(self->args, 'd'))
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server_write_session(s, MSG_DETACH, NULL, 0);
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update = options_get_string(&s->options, "update-environment");
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environ_update(update, &cmdq->client->environ, &s->environ);
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cmdq->client->session = s;
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notify_attached_session_changed(cmdq->client);
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session_update_activity(s);
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server_redraw_client(cmdq->client);
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s->curw->flags &= ~WINLINK_ALERTFLAGS;
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server_write_ready(cmdq->client);
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cmdq->client_exit = 0;
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}
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recalculate_sizes();
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server_update_socket();
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return (CMD_RETURN_NORMAL);
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}
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