qrcodenative.py

import math

#QRCode for Python
#
#Ported from the Javascript library by Sam Curren
#
#QRCode for Javascript
#http://d-project.googlecode.com/svn/trunk/misc/qrcode/js/qrcode.js
#
#Copyright (c) 2009 Kazuhiko Arase
#
#URL: http://www.d-project.com/
#
#Licensed under the MIT license:
#   http://www.opensource.org/licenses/mit-license.php
#
# The word "QR Code" is registered trademark of
# DENSO WAVE INCORPORATED
#   http://www.denso-wave.com/qrcode/faqpatent-e.html


class QR8bitByte:

   def __init__(self, data):
      self.mode = QRMode.MODE_8BIT_BYTE
      self.data = data

   def getLength(self):
      return len(self.data)

   def write(self, buffer):
      for i in range(len(self.data)):
         #// not JIS ...
         buffer.put(ord(self.data[i]), 8)
   def __repr__(self):
      return self.data

class QRCode:
   def __init__(self, typeNumber, errorCorrectLevel):
      self.typeNumber = typeNumber
      self.errorCorrectLevel = errorCorrectLevel
      self.modules = None
      self.moduleCount = 0
      self.dataCache = None
      self.dataList = []
   def addData(self, data):
      newData = QR8bitByte(data)
      self.dataList.append(newData)
      self.dataCache = None
   def isDark(self, row, col):
      if (row < 0 or self.moduleCount <= row or col < 0 or self.moduleCount <= col):
         raise Exception("%s,%s - %s" % (row, col, self.moduleCount))
      return self.modules[row][col]
   def getModuleCount(self):
      return self.moduleCount
   def make(self):
      self.makeImpl(False, self.getBestMaskPattern() )
   def makeImpl(self, test, maskPattern):

      self.moduleCount = self.typeNumber * 4 + 17
      self.modules = [None for x in range(self.moduleCount)]

      for row in range(self.moduleCount):

         self.modules[row] = [None for x in range(self.moduleCount)]

         for col in range(self.moduleCount):
            self.modules[row][col] = None #//(col + row) % 3;

      self.setupPositionProbePattern(0, 0)
      self.setupPositionProbePattern(self.moduleCount - 7, 0)
      self.setupPositionProbePattern(0, self.moduleCount - 7)
      self.setupPositionAdjustPattern()
      self.setupTimingPattern()
      self.setupTypeInfo(test, maskPattern)

      if (self.typeNumber >= 7):
         self.setupTypeNumber(test)

      if (self.dataCache == None):
         self.dataCache = QRCode.createData(self.typeNumber, self.errorCorrectLevel, self.dataList)
      self.mapData(self.dataCache, maskPattern)

   def setupPositionProbePattern(self, row, col):

      for r in range(-1, 8):

         if (row + r <= -1 or self.moduleCount <= row + r): continue

         for c in range(-1, 8):

            if (col + c <= -1 or self.moduleCount <= col + c): continue

            if ( (0 <= r and r <= 6 and (c == 0 or c == 6) )
                  or (0 <= c and c <= 6 and (r == 0 or r == 6) )
                  or (2 <= r and r <= 4 and 2 <= c and c <= 4) ):
               self.modules[row + r][col + c] = True;
            else:
               self.modules[row + r][col + c] = False;

   def getBestMaskPattern(self):

      minLostPoint = 0
      pattern = 0

      for i in range(8):

         self.makeImpl(True, i);

         lostPoint = QRUtil.getLostPoint(self);

         if (i == 0 or minLostPoint > lostPoint):
            minLostPoint = lostPoint
            pattern = i

      return pattern

   def createMovieClip(self):
      raise Exception("Method not relevant to Python port")

   def makeImage(self):
      pass
      #boxsize = 10 #pixels per box
      #offset = 4 #boxes as border
      #pixelsize = (self.getModuleCount() + offset + offset) * boxsize

      #im = Image.new("RGB", (pixelsize, pixelsize), "white")
      #d = ImageDraw.Draw(im)

      #for r in range(self.getModuleCount()):
         #for c in range(self.getModuleCount()):
            #if (self.isDark(r, c) ):
               #x = (c + offset) * boxsize
               #y = (r + offset) * boxsize
               #b = [(x,y),(x+boxsize,y+boxsize)]
               #d.rectangle(b,fill="black")
      #del d
      #return im

   def setupTimingPattern(self):

      for r in range(8, self.moduleCount - 8):
         if (self.modules[r][6] != None):
            continue
         self.modules[r][6] = (r % 2 == 0)

      for c in range(8, self.moduleCount - 8):
         if (self.modules[6][c] != None):
            continue
         self.modules[6][c] = (c % 2 == 0)

   def setupPositionAdjustPattern(self):

      pos = QRUtil.getPatternPosition(self.typeNumber)

      for i in range(len(pos)):

         for j in range(len(pos)):

            row = pos[i]
            col = pos[j]

            if (self.modules[row][col] != None):
               continue

            for r in range(-2, 3):

               for c in range(-2, 3):

                  if (r == -2 or r == 2 or c == -2 or c == 2 or (r == 0 and c == 0) ):
                     self.modules[row + r][col + c] = True
                  else:
                     self.modules[row + r][col + c] = False

   def setupTypeNumber(self, test):

      bits = QRUtil.getBCHTypeNumber(self.typeNumber)

      for i in range(18):
         mod = (not test and ( (bits >> i) & 1) == 1)
         self.modules[i // 3][i % 3 + self.moduleCount - 8 - 3] = mod;

      for i in range(18):
         mod = (not test and ( (bits >> i) & 1) == 1)
         self.modules[i % 3 + self.moduleCount - 8 - 3][i // 3] = mod;

   def setupTypeInfo(self, test, maskPattern):

      data = (self.errorCorrectLevel << 3) | maskPattern
      bits = QRUtil.getBCHTypeInfo(data)

      #// vertical
      for i in range(15):

         mod = (not test and ( (bits >> i) & 1) == 1)

         if (i < 6):
            self.modules[i][8] = mod
         elif (i < 8):
            self.modules[i + 1][8] = mod
         else:
            self.modules[self.moduleCount - 15 + i][8] = mod

      #// horizontal
      for i in range(15):

         mod = (not test and ( (bits >> i) & 1) == 1);

         if (i < 8):
            self.modules[8][self.moduleCount - i - 1] = mod
         elif (i < 9):
            self.modules[8][15 - i - 1 + 1] = mod
         else:
            self.modules[8][15 - i - 1] = mod

      #// fixed module
      self.modules[self.moduleCount - 8][8] = (not test)

   def mapData(self, data, maskPattern):

      inc = -1
      row = self.moduleCount - 1
      bitIndex = 7
      byteIndex = 0

      for col in range(self.moduleCount - 1, 0, -2):

         if (col == 6): col-=1

         while (True):

            for c in range(2):

               if (self.modules[row][col - c] == None):

                  dark = False

                  if (byteIndex < len(data)):
                     dark = ( ( (data[byteIndex] >> bitIndex) & 1) == 1)

                  mask = QRUtil.getMask(maskPattern, row, col - c)

                  if (mask):
                     dark = not dark

                  self.modules[row][col - c] = dark
                  bitIndex-=1

                  if (bitIndex == -1):
                     byteIndex+=1
                     bitIndex = 7

            row += inc

            if (row < 0 or self.moduleCount <= row):
               row -= inc
               inc = -inc
               break
   PAD0 = 0xEC
   PAD1 = 0x11

   @staticmethod
   def createData(typeNumber, errorCorrectLevel, dataList):

      rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel)

      buffer = QRBitBuffer();

      for i in range(len(dataList)):
         data = dataList[i]
         buffer.put(data.mode, 4)
         buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) )
         data.write(buffer)

      #// calc num max data.
      totalDataCount = 0;
      for i in range(len(rsBlocks)):
         totalDataCount += rsBlocks[i].dataCount

      if (buffer.getLengthInBits() > totalDataCount * 8):
         raise Exception("code length overflow. ("
            + buffer.getLengthInBits()
            + ">"
            +  totalDataCount * 8
            + ")")

      #// end code
      if (buffer.getLengthInBits() + 4 <= totalDataCount * 8):
         buffer.put(0, 4)

      #// padding
      while (buffer.getLengthInBits() % 8 != 0):
         buffer.putBit(False)

      #// padding
      while (True):

         if (buffer.getLengthInBits() >= totalDataCount * 8):
            break
         buffer.put(QRCode.PAD0, 8)

         if (buffer.getLengthInBits() >= totalDataCount * 8):
            break
         buffer.put(QRCode.PAD1, 8)

      return QRCode.createBytes(buffer, rsBlocks)

   @staticmethod
   def createBytes(buffer, rsBlocks):

      offset = 0

      maxDcCount = 0
      maxEcCount = 0

      dcdata = [0 for x in range(len(rsBlocks))]
      ecdata = [0 for x in range(len(rsBlocks))]

      for r in range(len(rsBlocks)):

         dcCount = rsBlocks[r].dataCount
         ecCount = rsBlocks[r].totalCount - dcCount

         maxDcCount = max(maxDcCount, dcCount)
         maxEcCount = max(maxEcCount, ecCount)

         dcdata[r] = [0 for x in range(dcCount)]

         for i in range(len(dcdata[r])):
            dcdata[r][i] = 0xff & buffer.buffer[i + offset]
         offset += dcCount

         rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount)
         rawPoly = QRPolynomial(dcdata[r], rsPoly.getLength() - 1)

         modPoly = rawPoly.mod(rsPoly)
         ecdata[r] = [0 for x in range(rsPoly.getLength()-1)]
         for i in range(len(ecdata[r])):
            modIndex = i + modPoly.getLength() - len(ecdata[r])
            if (modIndex >= 0):
               ecdata[r][i] = modPoly.get(modIndex)
            else:
               ecdata[r][i] = 0

      totalCodeCount = 0
      for i in range(len(rsBlocks)):
         totalCodeCount += rsBlocks[i].totalCount

      data = [None for x in range(totalCodeCount)]
      index = 0

      for i in range(maxDcCount):
         for r in range(len(rsBlocks)):
            if (i < len(dcdata[r])):
               data[index] = dcdata[r][i]
               index+=1

      for i in range(maxEcCount):
         for r in range(len(rsBlocks)):
            if (i < len(ecdata[r])):
               data[index] = ecdata[r][i]
               index+=1

      return data


class QRMode:
   MODE_NUMBER = 1 << 0
   MODE_ALPHA_NUM = 1 << 1
   MODE_8BIT_BYTE = 1 << 2
   MODE_KANJI = 1 << 3

class QRErrorCorrectLevel:
   L = 1
   M = 0
   Q = 3
   H = 2

class QRMaskPattern:
   PATTERN000 = 0
   PATTERN001 = 1
   PATTERN010 = 2
   PATTERN011 = 3
   PATTERN100 = 4
   PATTERN101 = 5
   PATTERN110 = 6
   PATTERN111 = 7

class QRUtil(object):
   PATTERN_POSITION_TABLE = [
      [],
      [6, 18],
      [6, 22],
      [6, 26],
      [6, 30],
      [6, 34],
      [6, 22, 38],
      [6, 24, 42],
      [6, 26, 46],
      [6, 28, 50],
      [6, 30, 54],
      [6, 32, 58],
      [6, 34, 62],
      [6, 26, 46, 66],
      [6, 26, 48, 70],
      [6, 26, 50, 74],
      [6, 30, 54, 78],
      [6, 30, 56, 82],
      [6, 30, 58, 86],
      [6, 34, 62, 90],
      [6, 28, 50, 72, 94],
      [6, 26, 50, 74, 98],
      [6, 30, 54, 78, 102],
      [6, 28, 54, 80, 106],
      [6, 32, 58, 84, 110],
      [6, 30, 58, 86, 114],
      [6, 34, 62, 90, 118],
      [6, 26, 50, 74, 98, 122],
      [6, 30, 54, 78, 102, 126],
      [6, 26, 52, 78, 104, 130],
      [6, 30, 56, 82, 108, 134],
      [6, 34, 60, 86, 112, 138],
      [6, 30, 58, 86, 114, 142],
      [6, 34, 62, 90, 118, 146],
      [6, 30, 54, 78, 102, 126, 150],
      [6, 24, 50, 76, 102, 128, 154],
      [6, 28, 54, 80, 106, 132, 158],
      [6, 32, 58, 84, 110, 136, 162],
      [6, 26, 54, 82, 110, 138, 166],
      [6, 30, 58, 86, 114, 142, 170]
   ]

   G15 = (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0)
   G18 = (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0)
   G15_MASK = (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1)

   @staticmethod
   def getBCHTypeInfo(data):
      d = data << 10;
      while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0):
         d ^= (QRUtil.G15 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) ) )

      return ( (data << 10) | d) ^ QRUtil.G15_MASK
   @staticmethod
   def getBCHTypeNumber(data):
      d = data << 12;
      while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0):
         d ^= (QRUtil.G18 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) ) )
      return (data << 12) | d
   @staticmethod
   def getBCHDigit(data):
      digit = 0;
      while (data != 0):
         digit += 1
         data >>= 1
      return digit
   @staticmethod
   def getPatternPosition(typeNumber):
      return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1]
   @staticmethod
   def getMask(maskPattern, i, j):
      if maskPattern == QRMaskPattern.PATTERN000 : return (i + j) % 2 == 0
      if maskPattern == QRMaskPattern.PATTERN001 : return i % 2 == 0
      if maskPattern == QRMaskPattern.PATTERN010 : return j % 3 == 0
      if maskPattern == QRMaskPattern.PATTERN011 : return (i + j) % 3 == 0
      if maskPattern == QRMaskPattern.PATTERN100 : return (math.floor(i / 2) + math.floor(j / 3) ) % 2 == 0
      if maskPattern == QRMaskPattern.PATTERN101 : return (i * j) % 2 + (i * j) % 3 == 0
      if maskPattern == QRMaskPattern.PATTERN110 : return ( (i * j) % 2 + (i * j) % 3) % 2 == 0
      if maskPattern == QRMaskPattern.PATTERN111 : return ( (i * j) % 3 + (i + j) % 2) % 2 == 0
      raise Exception("bad maskPattern:" + maskPattern);
   @staticmethod
   def getErrorCorrectPolynomial(errorCorrectLength):
      a = QRPolynomial([1], 0);
      for i in range(errorCorrectLength):
         a = a.multiply(QRPolynomial([1, QRMath.gexp(i)], 0) )
      return a
   @staticmethod
   def getLengthInBits(mode, type):

      if 1 <= type and type < 10:

         #// 1 - 9

         if mode == QRMode.MODE_NUMBER    : return 10
         if mode == QRMode.MODE_ALPHA_NUM    : return 9
         if mode == QRMode.MODE_8BIT_BYTE   : return 8
         if mode == QRMode.MODE_KANJI     : return 8
         raise Exception("mode:" + mode)

      elif (type < 27):

         #// 10 - 26

         if mode == QRMode.MODE_NUMBER    : return 12
         if mode == QRMode.MODE_ALPHA_NUM    : return 11
         if mode == QRMode.MODE_8BIT_BYTE   : return 16
         if mode == QRMode.MODE_KANJI     : return 10
         raise Exception("mode:" + mode)

      elif (type < 41):

         #// 27 - 40

         if mode == QRMode.MODE_NUMBER    : return 14
         if mode == QRMode.MODE_ALPHA_NUM   : return 13
         if mode == QRMode.MODE_8BIT_BYTE   : return 16
         if mode == QRMode.MODE_KANJI     : return 12
         raise Exception("mode:" + mode)

      else:
         raise Exception("type:" + type)
   @staticmethod
   def getLostPoint(qrCode):

      moduleCount = qrCode.getModuleCount();

      lostPoint = 0;

      #// LEVEL1

      for row in range(moduleCount):

         for col in range(moduleCount):

            sameCount = 0;
            dark = qrCode.isDark(row, col);

            for r in range(-1, 2):

               if (row + r < 0 or moduleCount <= row + r):
                  continue

               for c in range(-1, 2):

                  if (col + c < 0 or moduleCount <= col + c):
                     continue
                  if (r == 0 and c == 0):
                     continue

                  if (dark == qrCode.isDark(row + r, col + c) ):
                     sameCount+=1
            if (sameCount > 5):
               lostPoint += (3 + sameCount - 5)

      #// LEVEL2

      for row in range(moduleCount - 1):
         for col in range(moduleCount - 1):
            count = 0;
            if (qrCode.isDark(row,    col   ) ): count+=1
            if (qrCode.isDark(row + 1, col   ) ): count+=1
            if (qrCode.isDark(row,    col + 1) ): count+=1
            if (qrCode.isDark(row + 1, col + 1) ): count+=1
            if (count == 0 or count == 4):
               lostPoint += 3

      #// LEVEL3

      for row in range(moduleCount):
         for col in range(moduleCount - 6):
            if (qrCode.isDark(row, col)
                  and not qrCode.isDark(row, col + 1)
                  and  qrCode.isDark(row, col + 2)
                  and  qrCode.isDark(row, col + 3)
                  and  qrCode.isDark(row, col + 4)
                  and not qrCode.isDark(row, col + 5)
                  and  qrCode.isDark(row, col + 6) ):
               lostPoint += 40

      for col in range(moduleCount):
         for row in range(moduleCount - 6):
            if (qrCode.isDark(row, col)
                  and not qrCode.isDark(row + 1, col)
                  and  qrCode.isDark(row + 2, col)
                  and  qrCode.isDark(row + 3, col)
                  and  qrCode.isDark(row + 4, col)
                  and not qrCode.isDark(row + 5, col)
                  and  qrCode.isDark(row + 6, col) ):
               lostPoint += 40

      #// LEVEL4

      darkCount = 0;

      for col in range(moduleCount):
         for row in range(moduleCount):
            if (qrCode.isDark(row, col) ):
               darkCount+=1

      ratio = abs(100 * darkCount / moduleCount / moduleCount - 50) / 5
      lostPoint += ratio * 10

      return lostPoint

class QRMath:

   @staticmethod
   def glog(n):
      if (n < 1):
         raise Exception("glog(" + n + ")")
      return LOG_TABLE[n];
   @staticmethod
   def gexp(n):
      while n < 0:
         n += 255
      while n >= 256:
         n -= 255
      return EXP_TABLE[n];

EXP_TABLE = [x for x in range(256)]

LOG_TABLE = [x for x in range(256)]

for i in range(8):
   EXP_TABLE[i] = 1 << i;

for i in range(8, 256):
   EXP_TABLE[i] = EXP_TABLE[i - 4] ^ EXP_TABLE[i - 5] ^ EXP_TABLE[i - 6] ^ EXP_TABLE[i - 8]

for i in range(255):
   LOG_TABLE[EXP_TABLE[i] ] = i

class QRPolynomial:

   def __init__(self, num, shift):

      if (len(num) == 0):
         raise Exception(num.length + "/" + shift)

      offset = 0

      while offset < len(num) and num[offset] == 0:
         offset += 1

      self.num = [0 for x in range(len(num)-offset+shift)]
      for i in range(len(num) - offset):
         self.num[i] = num[i + offset]


   def get(self, index):
      return self.num[index]
   def getLength(self):
      return len(self.num)
   def multiply(self, e):
      num = [0 for x in range(self.getLength() + e.getLength() - 1)];

      for i in range(self.getLength()):
         for j in range(e.getLength()):
            num[i + j] ^= QRMath.gexp(QRMath.glog(self.get(i) ) + QRMath.glog(e.get(j) ) )

      return QRPolynomial(num, 0);
   def mod(self, e):

      if (self.getLength() - e.getLength() < 0):
         return self;

      ratio = QRMath.glog(self.get(0) ) - QRMath.glog(e.get(0) )

      num = [0 for x in range(self.getLength())]

      for i in range(self.getLength()):
         num[i] = self.get(i);

      for i in range(e.getLength()):
         num[i] ^= QRMath.gexp(QRMath.glog(e.get(i) ) + ratio)

      # recursive call
      return QRPolynomial(num, 0).mod(e);

class QRRSBlock:

   RS_BLOCK_TABLE = [

      #// L
      #// M
      #// Q
      #// H

      #// 1
      [1, 26, 19],
      [1, 26, 16],
      [1, 26, 13],
      [1, 26, 9],

      #// 2
      [1, 44, 34],
      [1, 44, 28],
      [1, 44, 22],
      [1, 44, 16],

      #// 3
      [1, 70, 55],
      [1, 70, 44],
      [2, 35, 17],
      [2, 35, 13],

      #// 4
      [1, 100, 80],
      [2, 50, 32],
      [2, 50, 24],
      [4, 25, 9],

      #// 5
      [1, 134, 108],
      [2, 67, 43],
      [2, 33, 15, 2, 34, 16],
      [2, 33, 11, 2, 34, 12],

      #// 6
      [2, 86, 68],
      [4, 43, 27],
      [4, 43, 19],
      [4, 43, 15],

      #// 7
      [2, 98, 78],
      [4, 49, 31],
      [2, 32, 14, 4, 33, 15],
      [4, 39, 13, 1, 40, 14],

      #// 8
      [2, 121, 97],
      [2, 60, 38, 2, 61, 39],
      [4, 40, 18, 2, 41, 19],
      [4, 40, 14, 2, 41, 15],

      #// 9
      [2, 146, 116],
      [3, 58, 36, 2, 59, 37],
      [4, 36, 16, 4, 37, 17],
      [4, 36, 12, 4, 37, 13],

      #// 10
      [2, 86, 68, 2, 87, 69],
      [4, 69, 43, 1, 70, 44],
      [6, 43, 19, 2, 44, 20],
      [6, 43, 15, 2, 44, 16],

     # 11
     [4, 101, 81],
     [1, 80, 50, 4, 81, 51],
     [4, 50, 22, 4, 51, 23],
     [3, 36, 12, 8, 37, 13],

     # 12
     [2, 116, 92, 2, 117, 93],
     [6, 58, 36, 2, 59, 37],
     [4, 46, 20, 6, 47, 21],
     [7, 42, 14, 4, 43, 15],

     # 13
     [4, 133, 107],
     [8, 59, 37, 1, 60, 38],
     [8, 44, 20, 4, 45, 21],
     [12, 33, 11, 4, 34, 12],

     # 14
     [3, 145, 115, 1, 146, 116],
     [4, 64, 40, 5, 65, 41],
     [11, 36, 16, 5, 37, 17],
     [11, 36, 12, 5, 37, 13],

     # 15
     [5, 109, 87, 1, 110, 88],
     [5, 65, 41, 5, 66, 42],
     [5, 54, 24, 7, 55, 25],
     [11, 36, 12],

     # 16
     [5, 122, 98, 1, 123, 99],
     [7, 73, 45, 3, 74, 46],
     [15, 43, 19, 2, 44, 20],
     [3, 45, 15, 13, 46, 16],

     # 17
     [1, 135, 107, 5, 136, 108],
     [10, 74, 46, 1, 75, 47],
     [1, 50, 22, 15, 51, 23],
     [2, 42, 14, 17, 43, 15],

     # 18
     [5, 150, 120, 1, 151, 121],
     [9, 69, 43, 4, 70, 44],
     [17, 50, 22, 1, 51, 23],
     [2, 42, 14, 19, 43, 15],

     # 19
     [3, 141, 113, 4, 142, 114],
     [3, 70, 44, 11, 71, 45],
     [17, 47, 21, 4, 48, 22],
     [9, 39, 13, 16, 40, 14],

     # 20
     [3, 135, 107, 5, 136, 108],
     [3, 67, 41, 13, 68, 42],
     [15, 54, 24, 5, 55, 25],
     [15, 43, 15, 10, 44, 16],

     # 21
     [4, 144, 116, 4, 145, 117],
     [17, 68, 42],
     [17, 50, 22, 6, 51, 23],
     [19, 46, 16, 6, 47, 17],

     # 22
     [2, 139, 111, 7, 140, 112],
     [17, 74, 46],
     [7, 54, 24, 16, 55, 25],
     [34, 37, 13],

     # 23
     [4, 151, 121, 5, 152, 122],
     [4, 75, 47, 14, 76, 48],
     [11, 54, 24, 14, 55, 25],
     [16, 45, 15, 14, 46, 16],

     # 24
     [6, 147, 117, 4, 148, 118],
     [6, 73, 45, 14, 74, 46],
     [11, 54, 24, 16, 55, 25],
     [30, 46, 16, 2, 47, 17],

     # 25
     [8, 132, 106, 4, 133, 107],
     [8, 75, 47, 13, 76, 48],
     [7, 54, 24, 22, 55, 25],
     [22, 45, 15, 13, 46, 16],

     # 26
     [10, 142, 114, 2, 143, 115],
     [19, 74, 46, 4, 75, 47],
     [28, 50, 22, 6, 51, 23],
     [33, 46, 16, 4, 47, 17],

     # 27
     [8, 152, 122, 4, 153, 123],
     [22, 73, 45, 3, 74, 46],
     [8, 53, 23, 26, 54, 24],
     [12, 45, 15, 28, 46, 16],

     # 28
     [3, 147, 117, 10, 148, 118],
     [3, 73, 45, 23, 74, 46],
     [4, 54, 24, 31, 55, 25],
     [11, 45, 15, 31, 46, 16],

     # 29
     [7, 146, 116, 7, 147, 117],
     [21, 73, 45, 7, 74, 46],
     [1, 53, 23, 37, 54, 24],
     [19, 45, 15, 26, 46, 16],

     # 30
     [5, 145, 115, 10, 146, 116],
     [19, 75, 47, 10, 76, 48],
     [15, 54, 24, 25, 55, 25],
     [23, 45, 15, 25, 46, 16],

     # 31
     [13, 145, 115, 3, 146, 116],
     [2, 74, 46, 29, 75, 47],
     [42, 54, 24, 1, 55, 25],
     [23, 45, 15, 28, 46, 16],

     # 32
     [17, 145, 115],
     [10, 74, 46, 23, 75, 47],
     [10, 54, 24, 35, 55, 25],
     [19, 45, 15, 35, 46, 16],

     # 33
     [17, 145, 115, 1, 146, 116],
     [14, 74, 46, 21, 75, 47],
     [29, 54, 24, 19, 55, 25],
     [11, 45, 15, 46, 46, 16],

     # 34
     [13, 145, 115, 6, 146, 116],
     [14, 74, 46, 23, 75, 47],
     [44, 54, 24, 7, 55, 25],
     [59, 46, 16, 1, 47, 17],

     # 35
     [12, 151, 121, 7, 152, 122],
     [12, 75, 47, 26, 76, 48],
     [39, 54, 24, 14, 55, 25],
     [22, 45, 15, 41, 46, 16],

     # 36
     [6, 151, 121, 14, 152, 122],
     [6, 75, 47, 34, 76, 48],
     [46, 54, 24, 10, 55, 25],
     [2, 45, 15, 64, 46, 16],

     # 37
     [17, 152, 122, 4, 153, 123],
     [29, 74, 46, 14, 75, 47],
     [49, 54, 24, 10, 55, 25],
     [24, 45, 15, 46, 46, 16],

     # 38
     [4, 152, 122, 18, 153, 123],
     [13, 74, 46, 32, 75, 47],
     [48, 54, 24, 14, 55, 25],
     [42, 45, 15, 32, 46, 16],

     # 39
     [20, 147, 117, 4, 148, 118],
     [40, 75, 47, 7, 76, 48],
     [43, 54, 24, 22, 55, 25],
     [10, 45, 15, 67, 46, 16],

     # 40
     [19, 148, 118, 6, 149, 119],
     [18, 75, 47, 31, 76, 48],
     [34, 54, 24, 34, 55, 25],
     [20, 45, 15, 61, 46, 16]

   ]

   def __init__(self, totalCount, dataCount):
      self.totalCount = totalCount
      self.dataCount = dataCount

   @staticmethod
   def getRSBlocks(typeNumber, errorCorrectLevel):
      rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
      if rsBlock == None:
         raise Exception("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel)

      length = len(rsBlock) / 3

      list = []

      for i in range(length):

         count = rsBlock[i * 3 + 0]
         totalCount = rsBlock[i * 3 + 1]
         dataCount  = rsBlock[i * 3 + 2]

         for j in range(count):
            list.append(QRRSBlock(totalCount, dataCount))

      return list;

   @staticmethod
   def getRsBlockTable(typeNumber, errorCorrectLevel):
      if errorCorrectLevel == QRErrorCorrectLevel.L:
         return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
      elif errorCorrectLevel == QRErrorCorrectLevel.M:
         return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
      elif errorCorrectLevel ==  QRErrorCorrectLevel.Q:
         return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
      elif errorCorrectLevel ==  QRErrorCorrectLevel.H:
         return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
      else:
         return None;

class QRBitBuffer:
   def __init__(self):
      self.buffer = []
      self.length = 0
   def __repr__(self):
      return ".".join([str(n) for n in self.buffer])
   def get(self, index):
      bufIndex = math.floor(index / 8)
      val = ( (self.buffer[bufIndex] >> (7 - index % 8) ) & 1) == 1
      print "get ", val
      return ( (self.buffer[bufIndex] >> (7 - index % 8) ) & 1) == 1
   def put(self, num, length):
      for i in range(length):
         self.putBit( ( (num >> (length - i - 1) ) & 1) == 1)
   def getLengthInBits(self):
      return self.length
   def putBit(self, bit):
      bufIndex = self.length // 8
      if len(self.buffer) <= bufIndex:
         self.buffer.append(0)
      if bit:
         self.buffer[bufIndex] |= (0x80 >> (self.length % 8) )
      self.length+=1