# Copyright 2014 Google Inc. All rights reserved.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

import ctypes

from . import number_types as N

from . import packer

from .compat import memoryview_type

def Get(packer_type, buf, head):

""" Get decodes a value at buf[head:] using `packer_type`. """

return packer_type.unpack_from(memoryview_type(buf), head)[0]

def Write(packer_type, buf, head, n):

""" Write encodes `n` at buf[head:] using `packer_type`. """

packer_type.pack_into(buf, head, n)