#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# module CBitSet
#
#    Copyright (C) 2019  AleaJactaEst
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

class CBitSet:
    def __init__(self, NL_BITLEN=32):
        self.NumBits = 0
        self.MaskLast = 0
        self.NL_BITLEN = NL_BITLEN
        self.data = self.resize(1024)

    def resize(self, numBits):
        self.data = [ 0 for _ in range(0, (numBits + self.NL_BITLEN - 1) // self.NL_BITLEN) ]
        self.NumBits = numBits
        nLastBits = self.NumBits & (self.NL_BITLEN-1)
        if nLastBits == 0:
            self.MaskLast = ~0
        else:
            self.MaskLast = (1 << nLastBits)-1
        self.clearAll()

    def clearData(self):
        self.data = []
        self.NumBits = 0
        self.MaskLast = 0

    def clearAll(self):
        for i in range(0, len(self.data)):
            self.data[i] = 0

    def set(self, bitNumber, value):
        #logging.getLogger('myLogger').debug("CBitSet::set %d %s" % (bitNumber, str(value)))
        mask = bitNumber & (self.NL_BITLEN-1)
        mask = 1 << mask
        if value:
            self.data[bitNumber >> 5] |= mask
        else:
            self.data[bitNumber >> 5] &= ~mask

    def get(self, bitNumber):
        mask= bitNumber&(self.NL_BITLEN-1);
        mask= 1<<mask;
        return self.data[bitNumber >> 5] & mask != 0

    def setBit(self, bitNumber):
        self.set(bitNumber, True)

    def clearBit(self, bitNumber):
        self.set(bitNumber, False)

    def __str__(self):
        return '.'.join([hex(x) for x in self.data])
    def writeSerial(self, msgout):
#        v = 0 # currentVersion
#        if v >= 0xff:
#            msgout.pushUint8(0xff)
#            msgout.pushUint8(v)
#        else:
#            msgout.pushUint8(v)

        #log = logging.getLogger('myLogger')
        #log.debug("CBitSet::writeSerial NumBits:%d len:%d" % (self.NumBits, len(self.data)))

        currentVersion = 0
        msgout.pushUint8(currentVersion)
        msgout.pushUint32(self.NumBits)
         # il est lié à 'self.NumBits' dommage que l'on envoie celui-la
        msgout.pushUint32(len(self.data))
        for x in self.data:
            msgout.pushUint32(x)

    def readSerial(self, msgin, name):
        _ = msgin.readSint8(name+':currentVersion')
        NumBits = msgin.readUint32(name+':NumBits')
        Size = msgin.readUint32(name+':Size')
        self.resize(NumBits)
        for i in range(0, Size):
            y = msgin.readUint32( name+':Data' )
            self.data[i] = y

def TestCBitSet():
    cBitSet = CBitSet()
    cBitSet.resize(1024)
    cBitSet.set(1, True)
    cBitSet.set(3, True)
    cBitSet.set(2, False)
    cBitSet.set(13, True)
    cBitSet.set(128, True)
    cBitSet.set(1023, True)
    print(cBitSet)
    print(cBitSet.get(3))
    cBitSet.set(3, False)
    print(cBitSet)
    print(cBitSet.get(3))