#

# Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# This component and the accompanying materials are made available

# under the terms of "Eclipse Public License v1.0"

# which accompanies this distribution, and is available

# at the URL "http://www.eclipse.org/legal/epl-v10.html".

#

# Initial Contributors:

# Nokia Corporation - initial contribution.

#

# Contributors:

#

# Description: 

#

import os, zipfile, shutil

def unzip_file(file, dir, delete_if_exists=False):

    if os.path.exists(dir):

        if delete_if_exists == True:

            shutil.rmtree(dir)

        else:

            raise RuntimeError("Directory '%s' already exists" % dir)

    if not os.path.exists(file):

        raise RuntimeError("File '%s' does not exist" % file)

    os.makedirs(dir)

    zf = zipfile.ZipFile(file)

    try:

        for name in zf.namelist():

            if name.endswith('/'):

                path = os.path.join(dir, name)

                if not os.path.exists(path):

                    os.makedirs(path)

            else:

                path = os.path.join(dir, name)

                dirname = os.path.dirname(path)

                if dirname != '' and not os.path.exists(dirname):

                    os.makedirs(dirname)

                f = open(path, 'wb')

                try:        f.write(zf.read(name))

                finally:    f.close()

    finally:

        zf.close()

def unzip_file_if_newer(file, dir):

    if not os.path.exists(file):

        raise RuntimeError("File '%s' does not exist" % file)

    if not os.path.exists(dir) or os.stat(file)[8] > os.stat(dir)[8]:

        unzip_file(file, dir, True)