int sha1_array_lookup(struct sha1_array *array, const unsigned char *sha1);
void sha1_array_clear(struct sha1_array *array);
+typedef void (*for_each_sha1_fn)(const unsigned char sha1[20],
+ void *data);
+void sha1_array_for_each_unique(struct sha1_array *array,
+ for_each_sha1_fn fn,
+ void *data);
+
#endif /* SHA1_ARRAY_H */