utils.py 文件源码

def multihash_ref(ref):
    if isinstance(ref, MultihashReference):
        return ref

    try:
        ref = ref.reference
    except AttributeError:
        pass
    try:
        ref = ref['@link']
    except (TypeError, KeyError):
        pass

    try:
        ref = base58.b58decode(ref)
    except ValueError:
        pass
    return MultihashReference(multihash=ref)