source: vendor/3.6.23/source4/scripting/python/modules.c

/* 
   Unix SMB/CIFS implementation.
   Samba utility functions
   Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <Python.h>
#include "includes.h"
#include "scripting/python/modules.h"
#include "dynconfig/dynconfig.h"

static bool PySys_PathPrepend(PyObject *list, const char *path)
{
        PyObject *py_path = PyString_FromString(path);
        if (py_path == NULL)
                return false;

        return (PyList_Insert(list, 0, py_path) == 0);
}

bool py_update_path(void)
{
        PyObject *mod_sys, *py_path;

        mod_sys = PyImport_ImportModule("sys");
        if (mod_sys == NULL) {
                return false;
        }

        py_path = PyObject_GetAttrString(mod_sys, "path");
        if (py_path == NULL) {
                return false;
        }       

        if (!PyList_Check(py_path)) {
                return false;
        }

        if (!PySys_PathPrepend(py_path, dyn_PYTHONDIR)) {
                return false;
        }

        if (strcmp(dyn_PYTHONARCHDIR, dyn_PYTHONDIR) != 0) {
                if (!PySys_PathPrepend(py_path, dyn_PYTHONARCHDIR)) {
                        return false;
                }
        }

        return true;
}