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nostrdb: add ndb_filter_eq

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filter equality testing. this works because field elements are sorted

Changelog-Added: Add ndb_filter_eq for filter equality testing
Signed-off-by: William Casarin <jb55@jb55.com>
This commit is contained in:
William Casarin
2024-11-03 07:18:28 -08:00
committed by Daniel D’Aquino
parent 1fdf234c46
commit 44ab702792
2 changed files with 83 additions and 0 deletions
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4
nostrdb/src/nostrdb.h
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@@ -257,6 +257,9 @@ struct ndb_filter {
int current;
// struct ndb_filter_elements offsets into elem_buf
//
// TODO(jb55): this should probably be called fields. elements are
// the things within fields
int elements[NDB_NUM_FILTERS];
};
@@ -494,6 +497,7 @@ int ndb_filter_init(struct ndb_filter *);
int ndb_filter_add_id_element(struct ndb_filter *, const unsigned char *id);
int ndb_filter_add_int_element(struct ndb_filter *, uint64_t integer);
int ndb_filter_add_str_element(struct ndb_filter *, const char *str);
int ndb_filter_eq(struct ndb_filter *, struct ndb_filter *);
// filters from json
int ndb_filter_from_json(const char *, int len, struct ndb_filter *filter, unsigned char *buf, int bufsize);