// string hash table
void *bcf_build_refhash(bcf_hdr_t *h);
void bcf_str2id_destroy(void *_hash);
+ void bcf_str2id_thorough_destroy(void *_hash);
int bcf_str2id_add(void *_hash, const char *str);
int bcf_str2id(void *_hash, const char *str);
void *bcf_str2id_init();