Datum
ltree_textadd(PG_FUNCTION_ARGS)
{
ltree *a = PG_GETARG_LTREE(1);
text *b = PG_GETARG_TEXT_P(0);
char *s;
ltree *r,
*tmp;
s = (char *) palloc(VARSIZE(b) - VARHDRSZ + 1);
memcpy(s, VARDATA(b), VARSIZE(b) - VARHDRSZ);
s[VARSIZE(b) - VARHDRSZ] = '\0';
tmp = (ltree *) DatumGetPointer(DirectFunctionCall1(
ltree_in,
PointerGetDatum(s)
));
pfree(s);
r = ltree_concat(tmp, a);
pfree(tmp);
PG_FREE_IF_COPY(a, 1);
PG_FREE_IF_COPY(b, 0);
PG_RETURN_POINTER(r);
}
Datum
ltree_addltree(PG_FUNCTION_ARGS)
{
ltree *a = PG_GETARG_LTREE(0);
ltree *b = PG_GETARG_LTREE(1);
ltree *r;
r = ltree_concat(a, b);
PG_FREE_IF_COPY(a, 0);
PG_FREE_IF_COPY(b, 1);
PG_RETURN_POINTER(r);
}
Datum
ltree_textadd(PG_FUNCTION_ARGS)
{
ltree *a = PG_GETARG_LTREE(1);
text *b = PG_GETARG_TEXT_PP(0);
char *s;
ltree *r,
*tmp;
s = text_to_cstring(b);
tmp = (ltree *) DatumGetPointer(DirectFunctionCall1(ltree_in,
PointerGetDatum(s)));
pfree(s);
r = ltree_concat(tmp, a);
pfree(tmp);
PG_FREE_IF_COPY(a, 1);
PG_FREE_IF_COPY(b, 0);
PG_RETURN_POINTER(r);
}