static idn_result_t
label_localmap(idn_resconf_t ctx, labellist_t label) {
const unsigned long *from;
const unsigned long *tld;
unsigned long *to = NULL;
size_t to_length;
idn_mapselector_t local_mapper;
idn_result_t r;
from = labellist_getname(label);
tld = labellist_gettldname(label);
TRACE(("res localmap(label=\"%s\", tld=\"%s\")\n",
idn__debug_ucs4xstring(from, 50),
idn__debug_ucs4xstring(tld, 50)));
local_mapper = idn_resconf_getlocalmapselector(ctx);
if (local_mapper == NULL) {
r = idn_success;
goto ret;
}
if (tld == from)
tld = idn_mapselector_getdefaulttld();
to_length = idn_ucs4_strlen(from) + 1 + 15; /* 15 for margin */
for (;;) {
unsigned long *new_buffer;
new_buffer = (unsigned long *)
realloc(to, sizeof(long) * to_length);
if (new_buffer == NULL) {
r = idn_nomemory;
goto ret;
}
to = new_buffer;
r = idn_mapselector_map2(local_mapper, from, tld, to,
to_length);
if (r == idn_success)
break;
else if (r != idn_buffer_overflow)
goto ret;
to_length *= 2;
}
r = labellist_setname(label, to);
ret:
if (r == idn_success) {
TRACE(("res localmap(): success (label=\"%s\")\n",
idn__debug_ucs4xstring(labellist_getname(label),
50)));
} else {
TRACE(("res localmap(): %s\n", idn_result_tostring(r)));
}
if (local_mapper != NULL)
idn_mapselector_destroy(local_mapper);
free(to);
return (r);
}
void
idn_resconf_setlocalmapselector(idn_resconf_t ctx,
idn_mapselector_t local_mapper) {
assert(ctx != NULL);
TRACE(("idn_resconf_setlocalmapselector()\n"));
if (ctx->local_mapper != NULL)
idn_mapselector_destroy(ctx->local_mapper);
ctx->local_mapper = local_mapper;
if (local_mapper != NULL)
idn_mapselector_incrref(ctx->local_mapper);
}
