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/*
* Copyright (c) 2017 TOYOTA MOTOR CORPORATION
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <search.h>
#include "af-steering-wheel-binding.h"
#include "bind_event.h"
#include "prop_search.h"
static void *bind_event_root = NULL;
static int compare(const void *pa, const void *pb)
{
struct bind_event_t *a = (struct bind_event_t *)pa;
struct bind_event_t *b = (struct bind_event_t *)pb;
return strcmp(a->name, b->name);
}
struct bind_event_t *get_event(const char *name)
{
struct bind_event_t key;
void *ent;
/*
* search subscribed event.
*/
key.name = name;
ent = tfind(&key, &bind_event_root, compare);
if (ent != NULL)
return *(struct bind_event_t **)ent; /* found */
return NULL; /* not found */
}
struct bind_event_t *register_event(const char *name)
{
struct bind_event_t *evt;
struct prop_info_t *property_info;
void *ent;
property_info = getProperty_dict(name);
if (property_info == NULL)
{
ERRMSG("NOT Supported property:\"%s\".", name);
return NULL;
}
evt = calloc(1, sizeof(*evt));
if (evt == NULL)
{
ERRMSG("not enough memory");
return NULL;
}
evt->event = afb_daemon_make_event(property_info->name);
if (!afb_event_is_valid(evt->event))
{
free(evt);
ERRMSG("afb_daemon_make_event failed");
return NULL;
}
evt->name = property_info->name;
evt->raw_info = property_info;
ent = tsearch(evt, &bind_event_root, compare);
if (ent == NULL)
{
ERRMSG("not enough memory");
afb_event_unref(evt->event);
free(evt);
return NULL;
}
#ifdef DEBUG /* double check */
if ((*(struct bind_event_t **)ent) != evt)
ERRMSG("event \"%s\" is duplicate?", property_info->name);
#endif
return evt;
}
int remove_event(const char *name)
{
struct bind_event_t *dnode;
struct bind_event_t key;
void *p;
key.name = name;
p = tfind(&key, &bind_event_root, compare);
if (p == NULL)
{
return 0;
}
dnode = *(struct bind_event_t **)p;
afb_event_unref(dnode->event);
tdelete(&key, &bind_event_root, compare);
free(dnode);
return 0;
}
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