void BUF_MEM_free(BUF_MEM *a);
int BUF_MEM_grow(BUF_MEM *str, size_t len);
int BUF_MEM_grow_clean(BUF_MEM *str, size_t len);
+size_t BUF_strnlen(const char *str, size_t maxlen);
char * BUF_strdup(const char *str);
char * BUF_strndup(const char *str, size_t siz);
void * BUF_memdup(const void *data, size_t siz);