Module lib.tools.useful

# Distributed under Pycameresp License
# Copyright (c) 2023 Remi BERTHOLET
# pylint:disable=consider-using-f-string
""" Miscellaneous utility functions """
import sys
import io
import tools.logger
import tools.filesystem

def run(filename):
        """ Import and execute python file """
        result = None
        path, file = tools.filesystem.split(filename)
        module_name, _ = tools.filesystem.splitext(file)

        if path not in sys.path:
                sys.path.append(path)

        try:
                del sys.modules[module_name]
        except:
                pass

        try:
                exec("import %s"%module_name)
                for fct in dir(sys.modules[module_name]):
                        if fct == "main":
                                print("Execute main function")
                                sys.modules[module_name].main()
                                break
        except Exception as err:
                if tools.filesystem.ismicropython():
                        out = io.StringIO()
                        # pylint: disable=no-member
                        sys.print_exception(err, out)
                        try:
                                line_err = out.getvalue().split("\n")[-3]
                                result = int((line_err.split(',')[1]).split(" ")[-1])
                        except:
                                pass
                tools.logger.syslog(err)
        except KeyboardInterrupt as err:
                tools.logger.syslog(err)
        return result