def _findStatic(berTLVArray, bTLVOff, berTagArray, bTagOff):
tlv = BERTLV.getInstance(berTLVArray, bTLVOff)
firstOff = bTLVOff + tlv.getTag().size() + getLengthLen(tlv.getLength())
if berTagArray is None:
if tlv.getLength() > 0:
# return the first one
return firstOff
else:
return -1
offset = tlv._find(BERTag.getInstance(berTagArray, bTagOff))
if offset == -1:
return -1
return firstOff + offset
def getInstance(bArray, bOff, bLen = None):
if bLen is None:
# This is a trick of mine, the JC framework will anyway always
# call it will three arguments
bLen = BERTLV.getLength(bArray, bOff)
tag = BERTag.getInstance(bArray, bOff)
if tag.isConstructed():
tlv = ConstructedBERTLV(0)
else:
tlv = PrimitiveBERTLV(0)
bOff += tag.size()
l, length = _getLength(bArray[bOff:])
# this calls the init method of the child class, not BERTLV
tlv.init(tag, bArray, bOff + l, bLen - tag.size() - l)
return tlv
def _findNextStatic(berTLVArray, bTLVOff, startOffset, berTagArray, bTagOff):
tlv = BERTLV.getInstance(berTLVArray, bTLVOff)
firstOff = bTLVOff + tlv.getTag().size() + getLengthLen(tlv.getLength())
# startOffset dos not has to be right on it ...
correctStartOff = 0
while firstOff + correctStartOff < startOffset:
correctStartOff = tlv._find(None, correctStartOff)
if correctStartOff == -1:
return -1
startOffset = correctStartOff
nextOff = tlv._find(None, startOff)
if berTagArray is None:
return firstOff + nextOff
offset = tlv._find(BERTag.getInstance(berTagArray, bTagOff), nextOff)
if offset == -1:
return -1
return firstOff + offset
def _getLengthStatic(berTLVArray, bOff):
tag = BERTag.getInstance(berTLVArray, bOff)
lenOff = bOff + tag.size()
(llen, length) = _getLength(berTLVArray[lenOff:])
return tag.size() + llen + length
