#!/usr/bin/env python
# Copyright 1999-2020 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

"""Run pylint with the right settings."""

import os
import sys


def find_all_modules(source_root):
    """Locate all python modules in the tree for scanning"""
    ret = []

    for root, _dirs, files in os.walk(source_root, topdown=False):
        # Add all of the .py modules in the tree.
        ret += [os.path.join(root, x) for x in files if x.endswith(".py")]

    # Add the main scripts that don't end in .py.
    ret += [os.path.join(source_root, x) for x in ("pylint",)]

    return ret


def main(argv):
    """The main entry point"""
    source_root = os.path.dirname(os.path.realpath(__file__))

    if not argv:
        argv = find_all_modules(source_root)

    pympath = source_root
    pythonpath = os.environ.get("PYTHONPATH")
    if pythonpath is None:
        pythonpath = pympath
    else:
        pythonpath = pympath + ":" + pythonpath
    os.environ["PYTHONPATH"] = pythonpath

    pylintrc = os.path.join(source_root, ".pylintrc")
    cmd = ["pylint", "--rcfile", pylintrc]
    os.execvp(cmd[0], cmd + argv)


if __name__ == "__main__":
    sys.exit(main(sys.argv[1:]))