# Copyright(c) 2017, Intel Corporation

#

# Redistribution  and  use  in source  and  binary  forms,  with  or  without

# modification, are permitted provided that the following conditions are met:

#

# * Redistributions of  source code  must retain the  above copyright notice,

#  this list of conditions and the following disclaimer.

# * Redistributions in binary form must reproduce the above copyright notice,

#  this list of conditions and the following disclaimer in the documentation

#   and/or other materials provided with the distribution.

# * Neither the name  of Intel Corporation  nor the names of its contributors

#   may be used to  endorse or promote  products derived  from this  software

#   without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT NOT LIMITED TO,  THE

# IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

# ARE DISCLAIMED.  IN NO EVENT  SHALL THE COPYRIGHT OWNER  OR CONTRIBUTORS BE

# LIABLE  FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL,  SPECIAL,  EXEMPLARY,  OR

# CONSEQUENTIAL  DAMAGES  (INCLUDING,  BUT  NOT LIMITED  TO,  PROCUREMENT  OF

# SUBSTITUTE GOODS OR SERVICES;  LOSS OF USE,  DATA, OR PROFITS;  OR BUSINESS

# INTERRUPTION)  HOWEVER CAUSED  AND ON ANY THEORY  OF LIABILITY,  WHETHER IN

# CONTRACT,  STRICT LIABILITY,  OR TORT  (INCLUDING NEGLIGENCE  OR OTHERWISE)

# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,  EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

import shutil

import tempfile

import collections

__work_dir__ = None

def get_work_dir():

    global __work_dir__

    if not __work_dir__:

        __work_dir__ = tempfile.mkdtemp(prefix="packager_work_", dir=".")

    return __work_dir__

def delete_work_dir():

    global __work_dir__

    if __work_dir__:

        shutil.rmtree(__work_dir__)

"""

Utility function to convert input to a native type

"""

def convert_to_native_type(val):

    try:

        if isinstance(val, str) and val.startswith('0x'):

            val = int(val, 16)

        else:

            val = int(val)

        return val

    except ValueError:

        pass

    try:

        val = float(val)

        return val

    except ValueError:

        pass

    try:

        val = str(val)

        return val

    except ValueError:

        raise Exception("Cannot convert passed argument to native type!")