example_helpers.py 文件源码

def do_cd(self, line):
        '''
        Pseudo Command: cd

        Description:
        Change the psuedo current working directory

        Note: The shell keeps a pseudo working directory
        that allows the user to change directory without
        changing the directory of the working process on sensor.

        Args:
        cd <Directory>
        '''
        self._needs_attached()

        path = self._file_path_fixup(line)
        path = ntpath.abspath(path)
        type = self._stat(path)
        if (type != "dir"):
            print("Error: Path %s does not exist" % path)
            return
        else:
            self.cwd = path

        # cwd never has a trailing \
        if self.cwd[-1:] == '\\':
            self.cwd = self.cwd[:-1]

        log.info("Changed directory to {0}".format(self.cwd))