#define SHA1_ARRAY_INIT { NULL, 0, 0, 0 }
void sha1_array_append(struct sha1_array *array, const unsigned char *sha1);
-void sha1_array_sort(struct sha1_array *array);
int sha1_array_lookup(struct sha1_array *array, const unsigned char *sha1);
void sha1_array_clear(struct sha1_array *array);