# (c) 2025 by Stephan Menzel
# Licensed under the Apache License, Version 2.0.
# See attached file LICENSE for full details

import contextlib
import os
from pathlib import Path

from build_functions.build_utils import file_and_console_log


@contextlib.contextmanager
def pushd(new_dir):
    """temporarily go into subdir - https://stackoverflow.com/questions/6194499/pushd-through-os-system
    """

    previous_dir = os.getcwd()
    os.chdir(new_dir)
    try:
        yield
    finally:
        os.chdir(previous_dir)


def get_local_prefix(prefix: Path | str) -> Path:
    p = Path(prefix) / Path.cwd().name
    if os.name == 'posix':
        if not "PKG_CONFIG_PATH" in os.environ:
            os.environ["PKG_CONFIG_PATH"] = ''
        os.environ["PKG_CONFIG_PATH"] += p / 'lib' / 'pkg_config'
        file_and_console_log("PKG_CONFIG_PATH = " + os.environ["PKG_CONFIG_PATH"])
    return p