import os
from os.path import join, abspath, dirname, split


def process():
    """Read in zope.conf configuration file.

    This is a hack but there doesn't seem to be a better way.
    """
    _prefix = os.environ.get('INSTANCE_HOME')
    if not _prefix:
        try:
            __file__
        except NameError:
            # Test was called directly, so no __file__ global exists.
            _prefix = abspath(os.curdir)
        else:
            # Test was called by another test.
            _prefix = abspath(dirname(__file__))
        _prefix = join(_prefix, '..', '..', '..')

    from Zope.Startup.run import configure
    configure(join(_prefix, 'etc', 'zope.conf'))