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#
# This file is part of pyasn1 software.
#
# Copyright (c) 2005-2017, Ilya Etingof <etingof@gmail.com>
# License: http://pyasn1.sf.net/license.html
#
from pyasn1.type import univ
from pyasn1.codec.cer import encoder
__all__ = ['encode']
class SetOfEncoder(encoder.SetOfEncoder):
@staticmethod
def _sortComponents(components):
# sort by tags depending on the actual Choice value (dynamic sort)
return sorted(components, key=lambda x: isinstance(x, univ.Choice) and x.getComponent().tagSet or x.tagSet)
tagMap = encoder.tagMap.copy()
tagMap.update({
# Set & SetOf have same tags
univ.SetOf.tagSet: SetOfEncoder()
})
typeMap = encoder.typeMap.copy()
typeMap.update({
# Set & SetOf have same tags
univ.Set.typeId: SetOfEncoder(),
univ.SetOf.typeId: SetOfEncoder()
})
class Encoder(encoder.Encoder):
fixedDefLengthMode = True
fixedChunkSize = 0
#: Turns ASN.1 object into DER octet stream.
#:
#: Takes any ASN.1 object (e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative)
#: walks all its components recursively and produces a DER octet stream.
#:
#: Parameters
#: ----------
# value: any pyasn1 object (e.g. :py:class:`~pyasn1.type.base.PyAsn1Item` derivative)
#: A pyasn1 object to encode
#:
#: defMode: :py:class:`bool`
#: If `False`, produces indefinite length encoding
#:
#: maxChunkSize: :py:class:`int`
#: Maximum chunk size in chunked encoding mode (0 denotes unlimited chunk size)
#:
#: Returns
#: -------
#: : :py:class:`bytes` (Python 3) or :py:class:`str` (Python 2)
#: Given ASN.1 object encoded into BER octetstream
#:
#: Raises
#: ------
#: : :py:class:`pyasn1.error.PyAsn1Error`
#: On encoding errors
encode = Encoder(tagMap, typeMap)