gnunet/__init__.py


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import gnunet.strings as strings


class GNUNetDaemonError(Exception):
    pass


class _Key:
    def __init__(self, arg, subtype, bits):
        if isinstance(arg, subtype):
            self._data = arg._data
        elif isinstance(arg, str):
            self._data = strings.string_to_data(arg)
        else:
            try:
                self._data = bytearray(arg)
            except:
                raise TypeError("'arg' must be a " + type(subtype).__name__ + ", a string or an array of bytes. Not a '" + type(arg).__name__ + "'.")

        if len(self._data) * 8 != bits:
            raise ValueError("'arg' must be a " + bits + " bit hash. Got " + len(self._data) + " bits.")

    def __str__(self):
        return strings.data_to_string(self._data)


class HashCode(_Key):
    def __init__(self, arg):
        _Key.__init__(self, arg, HashCode, 512)

    def __repr__(self):
        return "gnunet.HashCode('" + str(self) + "')"