runners: jlink: win32: search for valid `JLink.exe`

'''Runner for debugging with J-Link.'''

import argparse

import glob

import ipaddress

import logging

import os

except ImportError:

    MISSING_REQUIREMENTS = True

DEFAULT_JLINK_EXE = 'JLink.exe' if sys.platform == 'win32' else 'JLinkExe'

if sys.platform == 'win32':

    # JLink.exe can collide with the JDK executable of the same name

    # Look in the usual locations before falling back to $PATH

    for root in [os.environ["ProgramFiles"], os.environ["ProgramFiles(x86)"], str(Path.home())]: # noqa SIM112

        # SEGGER folder can contain a single "JLink" folder

        _direct = Path(root) / "SEGGER" / "JLink" / "JLink.exe"

        if _direct.exists():

            DEFAULT_JLINK_EXE = str(_direct)

            del _direct

        else:

            # SEGGER folder can contain multiple versions such as:

            #   JLink_V796b

            #   JLink_V796t

            #   JLink_V798c

            # Find the latest version

            _versions = glob.glob(str(Path(root) / "SEGGER" / "JLink_V*"))

            if len(_versions) == 0:

                continue

            _expected_jlink = Path(_versions[-1]) / "JLink.exe"

            if not _expected_jlink.exists():

                continue

            DEFAULT_JLINK_EXE = str(_expected_jlink)

            # Cleanup variables

            del _versions

            del _expected_jlink

        break

    else:

        # Not found in the normal locations, hope that $PATH is correct

        DEFAULT_JLINK_EXE = "JLink.exe"

else:

    DEFAULT_JLINK_EXE = "JLinkExe"

DEFAULT_JLINK_GDB_PORT = 2331

DEFAULT_JLINK_RTT_PORT = 19021