#!/usr/bin/env python

import math, sys
import inkex
from simpletransform import computePointInNode

#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/
#
# Copyright (c) 2010 buliabyak@gmail.com:
#       adapting for Inkscape extension, SVG output, Auto mode
#
#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):

        if self.typeNumber == 0:
            self.typeNumber = QRCode.autoNumber(self.errorCorrectLevel, self.dataList)
        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 makeSVG(self, grp, boxsize):
        margin = 4
        pixelsize = (self.getModuleCount() + 2*margin) * boxsize #self.getModuleCount() * boxsize

        # white background providing margin:
        rect = inkex.etree.SubElement(grp, inkex.addNS('rect', 'svg'))
        rect.set('x', '0')
        rect.set('y', '0')
        rect.set('width', str(pixelsize))
        rect.set('height', str(pixelsize))
        rect.set('style', 'fill:white;stroke:none')
        
        for r in range(self.getModuleCount()):
            for c in range(self.getModuleCount()):
                if (self.isDark(r, c) ):
                    x = (c + margin) * boxsize
                    y = (r + margin) * boxsize
                    rect = inkex.etree.SubElement(grp, inkex.addNS('rect', 'svg'))
                    rect.set('x', str(x))
                    rect.set('y', str(y))
                    rect.set('width', str(boxsize))
                    rect.set('height', str(boxsize))
                    rect.set('style', 'fill:black;stroke:none')

    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 autoNumber(errorCorrectLevel, dataList):

        for tn in range (1, 40):
            
            rsBlocks = QRRSBlock.getRSBlocks(tn, 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, tn) )
                data.write(buffer)

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

            if (buffer.getLengthInBits() <= totalDataCount * 8):
                return tn

        inkex.errormsg("Even the largest size won't take this much data ("
            + str(buffer.getLengthInBits())
            + ">"
            +  str(totalDataCount * 8)
            + ")")
        sys.exit()
        


    @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):
            inkex.errormsg("Text is too long for this size ("
                + str(buffer.getLengthInBits())
                + ">"
                +  str(totalDataCount * 8)
                + ")")
            sys.exit()

        #// 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

class QRCodeInkscape(inkex.Effect):
    def __init__(self):
        inkex.Effect.__init__(self)
        
        #PARSE OPTIONS
        self.OptionParser.add_option("--text",
            action="store", type="string",
            dest="TEXT", default='www.inkscape.org')
        self.OptionParser.add_option("--typenumber",
            action="store", type="string",
            dest="TYPENUMBER", default="0")
        self.OptionParser.add_option("--correctionlevel",
            action="store", type="string",
            dest="CORRECTIONLEVEL", default="0")
        self.OptionParser.add_option("--encoding",
            action="store", type="string",
            dest="input_encode", default="latin_1")
        self.OptionParser.add_option("--modulesize",
            action="store", type="float",
            dest="MODULESIZE", default=10)
            
    def effect(self):
        
        scale = self.unittouu('1px')    # convert to document units
        so = self.options
        
        if so.TEXT == '':  #abort if converting blank text
            inkex.errormsg(_('Please enter an input text'))
        else:
        
            #INKSCAPE GROUP TO CONTAIN EVERYTHING
            
            so.TEXT = unicode(so.TEXT, so.input_encode)
            centre = tuple(computePointInNode(list(self.view_center), self.current_layer))   #Put in in the centre of the current view
            grp_transform = 'translate' + str( centre ) + ' scale(%f)' % scale
            grp_name = 'QR Code: '+so.TEXT
            grp_attribs = {inkex.addNS('label','inkscape'):grp_name,
                           'transform':grp_transform }
            grp = inkex.etree.SubElement(self.current_layer, 'g', grp_attribs) #the group to put everything in
            
            #GENERATE THE QRCODE
            qr = QRCode(int(so.TYPENUMBER), int(so.CORRECTIONLEVEL))
            qr.addData(so.TEXT)
            qr.make()
            qr.makeSVG(grp, so.MODULESIZE)
            
if __name__ == '__main__':
    e = QRCodeInkscape()
    e.affect()

# vim: expandtab shiftwidth=4 tabstop=8 softtabstop=4 fileencoding=utf-8 textwidth=99
