hop-2012/experiments/cmsg/meta.c

55 lines
1.5 KiB
C

/* Copyright 2010, 2011, 2012 Tony Garnock-Jones <tonygarnockjones@gmail.com>.
*
* This file is part of Hop.
*
* Hop is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Hop is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Hop. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <stddef.h>
#include <assert.h>
#include "cmsg_private.h"
#include "ref.h"
#include "sexp.h"
#include "hashtable.h"
#include "node.h"
#include "meta.h"
#include "messages.h"
void init_meta(void) {
sexp_t *args;
args = INCREF(sexp_cons(sexp_cstring("meta"), NULL));
new_node(lookup_node_class(cmsg_cstring_bytes("direct")), args, NULL);
DECREF(args, sexp_destructor);
}
void announce_subscription(sexp_t *source,
sexp_t *filter,
sexp_t *sink,
sexp_t *name,
int onoff)
{
post_node(cmsg_cstring_bytes("meta"),
sexp_data(source),
onoff
? message_subscribed(source, filter, sink, name)
: message_unsubscribed(source, filter, sink, name),
NULL);
}