# Path: dtformats/data_format.py
# class BinaryDataFormat(object):
# class BinaryDataFile(BinaryDataFormat):
#   _FABRIC = None
#   _DEFINITION_FILES_PATH = os.path.dirname(__file__)
#   _HEXDUMP_CHARACTER_MAP = [
#       '.' if byte < 0x20 or byte > 0x7e else chr(byte) for byte in range(256)]
#   def __init__(self, debug=False, output_writer=None):
#   def _DebugPrintData(self, description, data):
#   def _DebugPrintDecimalValue(self, description, value):
#   def _DebugPrintFiletimeValue(self, description, value):
#   def _DebugPrintStructureObject(self, structure_object, debug_info):
#   def _DebugPrintPosixTimeValue(self, description, value):
#   def _DebugPrintText(self, text):
#   def _DebugPrintValue(self, description, value):
#   def _FormatDataInHexadecimal(self, data):
#   def _FormatArrayOfIntegersAsDecimals(self, array_of_integers):
#   def _FormatArrayOfIntegersAsOffsets(self, array_of_integers):
#   def _FormatArrayOfIntegersAsIPv4Address(self, array_of_integers):
#   def _FormatArrayOfIntegersAsIPv6Address(self, array_of_integers):
#   def _FormatFloatingPoint(self, floating_point):
#   def _FormatIntegerAsDecimal(self, integer):
#   def _FormatIntegerAsFiletime(self, integer):
#   def _FormatIntegerAsHexadecimal2(self, integer):
#   def _FormatIntegerAsHexadecimal4(self, integer):
#   def _FormatIntegerAsHexadecimal8(self, integer):
#   def _FormatIntegerAsPosixTime(self, integer):
#   def _FormatIntegerAsPosixTimeInMicroseconds(self, integer):
#   def _FormatIntegerAsOffset(self, integer):
#   def _FormatPackedIPv4Address(self, packed_ip_address):
#   def _FormatPackedIPv6Address(self, packed_ip_address):
#   def _FormatString(self, string):
#   def _FormatStructureObject(self, structure_object, debug_info):
#   def _FormatUUIDAsString(self, uuid):
#   def _FormatValue(self, description, value):
#   def _GetDataTypeMap(self, name):
#   def _ReadData(self, file_object, file_offset, data_size, description):
#   def _ReadStructure(
#       self, file_object, file_offset, data_size, data_type_map, description):
#   def _ReadStructureFromByteStream(
#       self, byte_stream, file_offset, data_type_map, description, context=None):
#   def _ReadStructureFromFileObject(
#       self, file_object, file_offset, data_type_map, description):
#   def ReadDefinitionFile(cls, filename):
#   def __init__(self, debug=False, output_writer=None):
#   def Close(self):
#   def Open(self, path):
#   def ReadFileObject(self, file_object):
# 
# Path: dtformats/errors.py
# class ParseError(Exception):


from dtformats import data_format
from dtformats import errors

    Returns:
      str: decoded string.
    """
    try:
      string = byte_stream.decode(encoding)
    except UnicodeDecodeError:
      string = 'INVALID'

    return string.rstrip('\x00')

  def _ReadEntries(self, file_object):
    """Reads entries.

    Args:
      file_object (file): file-like object.

    Raises:
      ParseError: if the entries cannot be read.
    """
    file_offset = 0
    data_type_map = self._GetDataTypeMap('macosx_utmpx_entry')

    entry, entry_data_size = self._ReadStructureFromFileObject(
        file_object, file_offset, data_type_map, 'entry')

    if self._debug:
      self._DebugPrintEntry(entry)

    if not entry.username.startswith(b'utmpx-1.00\x00'):

# Path: dtformats/data_format.py
# class BinaryDataFormat(object):
# class BinaryDataFile(BinaryDataFormat):
#   _FABRIC = None
#   _DEFINITION_FILES_PATH = os.path.dirname(__file__)
#   _HEXDUMP_CHARACTER_MAP = [
#       '.' if byte < 0x20 or byte > 0x7e else chr(byte) for byte in range(256)]
#   def __init__(self, debug=False, output_writer=None):
#   def _DebugPrintData(self, description, data):
#   def _DebugPrintDecimalValue(self, description, value):
#   def _DebugPrintFiletimeValue(self, description, value):
#   def _DebugPrintStructureObject(self, structure_object, debug_info):
#   def _DebugPrintPosixTimeValue(self, description, value):
#   def _DebugPrintText(self, text):
#   def _DebugPrintValue(self, description, value):
#   def _FormatDataInHexadecimal(self, data):
#   def _FormatArrayOfIntegersAsDecimals(self, array_of_integers):
#   def _FormatArrayOfIntegersAsOffsets(self, array_of_integers):
#   def _FormatArrayOfIntegersAsIPv4Address(self, array_of_integers):
#   def _FormatArrayOfIntegersAsIPv6Address(self, array_of_integers):
#   def _FormatFloatingPoint(self, floating_point):
#   def _FormatIntegerAsDecimal(self, integer):
#   def _FormatIntegerAsFiletime(self, integer):
#   def _FormatIntegerAsHexadecimal2(self, integer):
#   def _FormatIntegerAsHexadecimal4(self, integer):
#   def _FormatIntegerAsHexadecimal8(self, integer):
#   def _FormatIntegerAsPosixTime(self, integer):
#   def _FormatIntegerAsPosixTimeInMicroseconds(self, integer):
#   def _FormatIntegerAsOffset(self, integer):
#   def _FormatPackedIPv4Address(self, packed_ip_address):
#   def _FormatPackedIPv6Address(self, packed_ip_address):
#   def _FormatString(self, string):
#   def _FormatStructureObject(self, structure_object, debug_info):
#   def _FormatUUIDAsString(self, uuid):
#   def _FormatValue(self, description, value):
#   def _GetDataTypeMap(self, name):
#   def _ReadData(self, file_object, file_offset, data_size, description):
#   def _ReadStructure(
#       self, file_object, file_offset, data_size, data_type_map, description):
#   def _ReadStructureFromByteStream(
#       self, byte_stream, file_offset, data_type_map, description, context=None):
#   def _ReadStructureFromFileObject(
#       self, file_object, file_offset, data_type_map, description):
#   def ReadDefinitionFile(cls, filename):
#   def __init__(self, debug=False, output_writer=None):
#   def Close(self):
#   def Open(self, path):
#   def ReadFileObject(self, file_object):
# 
# Path: dtformats/errors.py
# class ParseError(Exception):


# Path: dtformats/utmp.py
from dtformats import data_format
from dtformats import errors


    Returns:
      str: decoded string.
    """
    try:
      string = byte_stream.decode(encoding)
    except UnicodeDecodeError:
      string = 'INVALID'

    return string.rstrip('\x00')

  def _ReadEntries(self, file_object):
    """Reads entries.

    Args:
      file_object (file): file-like object.

    Raises:
      ParseError: if the entries cannot be read.
    """
    file_offset = 0
    data_type_map = self._GetDataTypeMap('macosx_utmpx_entry')

    entry, entry_data_size = self._ReadStructureFromFileObject(
        file_object, file_offset, data_type_map, 'entry')

    if self._debug:
      self._DebugPrintEntry(entry)

    if not entry.username.startswith(b'utmpx-1.00\x00'):

      raise errors.ParseError('Unsupported file header signature.')