def readline()

in azure/datalake/store/core.py [0:0]

• 18 lines of code
• 10 McCabe index (conditional complexity)

    def readline(self, length=-1):
        """
        Read and return a line from the stream.

        If length is specified, at most size bytes will be read.
        """
        if length < 0:
            length = self.size

        line = b""
        while True:

            # if cache has last bytes of file and its read, return line and exit loop
            if self.end >= self.size and self.loc >= self.end:
                return line

            self._read_blocksize()

            found = self.cache[self.loc - self.start:].find(b'\n') + 1
            if found:
                partialLine = self.cache[
                              self.loc - self.start: min(self.loc - self.start + found, self.loc - self.start + length)]
            else:
                partialLine = self.cache[self.loc - self.start:]

            self.loc += len(partialLine)
            line += partialLine

            if found:
                return line