int
pdict_add_persistent_change_listener(pdict_t *pd, const char *kpat,
pdl_notify_func_t notify, void *arg)
{
pdict_persistent_listener_t *pl;
static int lid = 1;
if (!(pl = malloc(sizeof (*pl))))
return 0;
memset(pl, 0, sizeof (*pl));
pl->pdpl_l.pdl_notify = notify;
pl->pdpl_l.pdl_arg = arg;
if (regcomp(&pl->pdpl_regex, kpat, REG_EXTENDED | REG_NOSUB) != 0) {
// XXX todo: communicate error context is not libc
free(pl); pl = NULL;
pu_log(PUL_WARN, 0, "Failed regcomp in pdict_add_persistent_change_listener.");
return 0;
}
plist_add((void *)(size_t)lid, pl, &pd->pd_persistent_listeners);
pl->pdpl_new = 1;
if (!_pdict_walk_int(pd,
pdict_ent_add_persistent_change_listener_dcb, pl)) {
_pdict_walk_int(pd,
pdict_ent_remove_persistent_change_listener_dcb, pl);
plist_remove((void *)(size_t)lid, &pd->pd_persistent_listeners, NULL);
regfree(&pl->pdpl_regex);
free(pl); pl = NULL;
pu_log(PUL_WARN, 0, "Failed _pdict_walk_int in pdict_add_persistent_change_listener.");
return 0;
}
pl->pdpl_new = 0;
return lid++;
}
static
Clause extract_given_clause(Plist *lst)
{
Clause c = first_lightest(*lst);
*lst = plist_remove(*lst, c);
return c;
} /* extract_given_clause */
static int
_pdict_ent_remove_change_listener(pdict_ent_t *pde, pdl_notify_func_t notify,
void *a)
{
void *arg[3];
arg[0] = (void *)notify;
arg[1] = a;
arg[2] = NULL;
plist_walk(pde->pde_listeners, pdict_ent_remove_change_listener_cb, arg);
if (arg[2]) {
plist_remove(arg[2], &pde->pde_listeners, NULL);
free(arg[2]); arg[2] = NULL;
return 1;
}
return 0;
}
int
pdict_remove_persistent_change_listener(pdict_t *pd, int id)
{
pdict_persistent_listener_t *pdpl;
if (!plist_remove((void *)(size_t)id, &pd->pd_persistent_listeners, (void **)&pdpl) || !pdpl)
{
pu_log(PUL_WARN, 0, "Failed plist_remove in pdict_remove_persistent_change_listener.");
return 0;
}
if (!_pdict_walk_int(pd, pdict_ent_remove_persistent_change_listener_dcb, pdpl))
{
pu_log(PUL_WARN, 0, "Failed _pdict_walk_int in pdict_remove_persistent_change_listener.");
return 0;
}
regfree(&pdpl->pdpl_regex);
free(pdpl); pdpl = NULL;
return 1;
}