int sampgdk_callback_register(const char *name,
sampgdk_callback handler) {
int error;
int i;
struct _sampgdk_callback_info callback;
struct _sampgdk_callback_info *ptr;
assert(name != NULL);
ptr = _sampgdk_callback_find(name);
if (ptr != NULL) {
return sampgdk_array_get_index(&_sampgdk_callbacks, ptr);
}
callback.name = malloc(strlen(name) + 1);
if (callback.name == NULL) {
return -ENOMEM;
}
callback.handler = handler;
strcpy(callback.name, name);
/* Keep callbacks ordered by name.
* This allows us to use binary search in sampgdk_callback_find().
*/
for (i = 0; i < _sampgdk_callbacks.count - 1; i++) {
ptr = sampgdk_array_get(&_sampgdk_callbacks, i);
if (strcmp(name, ptr->name) <= 0) {
break;
}
}
error = sampgdk_array_insert(&_sampgdk_callbacks, i, 1, &callback);
if (error < 0) {
free(callback.name);
return error;
}
return error; /* index */
}
int sampgdk_array_insert_single(struct sampgdk_array *a, int index,
void *elem) {
assert(a != NULL);
assert(elem != NULL);
return sampgdk_array_insert(a, index, 1, elem);
}