Method read_file

recipes/Python/492212_dal4py/recipe-492212.py:115–127

(self, block)

    # Read From File
    def read_file(self, block):
        assert type(block) is int and 1 <= block <= self.__blocks
        assert self.is_file(block)
        data = self.__disk.read_file(block)
        size = ord(data[2])
        stream_length = (ord(data[size+3]) << 24) + (ord(data[size+4]) << 16)
        stream_length += (ord(data[size+5]) << 8) + ord(data[size+6])
        contents = data[size+3+4:]
        pointers = [(ord(contents[index*2]) << 8) + ord(contents[index*2+1]) \
                    for index in range(len(contents) / 2)]
        stream = ''.join([self.__disk.read_block(pointer) \
                          for pointer in pointers])
        return stream[:stream_length]

    # Write To File
    def write_file(self, block, data):