# -*- coding: iso-8859-1 -*-
# vi:ts=4:et
# $Id: util.py,v 1.4 2003/04/21 18:46:11 mfx Exp $

import os, sys

#
# prepare sys.path in case we are still in the build directory
# see also: distutils/command/build.py (build_platlib)
#

def get_sys_path(p=None):
    if p is None: p = sys.path
    p = p[:]
    try:
        from distutils.util import get_platform
    except ImportError:
        return p
    p0 = ""
    if p: p0 = p[0]
    #
    plat = get_platform()
    plat_specifier = "%s-%s" % (plat, sys.version[:3])
    ##print plat, plat_specifier
    #
    for prefix in (p0, os.curdir, os.pardir,):
        if not prefix:
            continue
        d = os.path.join(prefix, "build")
        for subdir in ("lib", "lib." + plat_specifier, "lib." + plat):
            dir = os.path.normpath(os.path.join(d, subdir))
            if os.path.isdir(dir):
                if dir not in p:
                    p.insert(1, dir)
    #
    return p