Adding upstream version 1.0.2.upstream/1.0.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1081 insertions, 0 deletions

diff --git a/share/extensions/render_barcode_qrcode.py b/share/extensions/render_barcode_qrcode.py
new file mode 100755
index 0000000..955465f
--- /dev/null
+++ b/share/extensions/render_barcode_qrcode.py
@@ -0,0 +1,1081 @@
+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2009 Kazuhiko Arase (http://www.d-project.com/)
+#               2010 Bulia Byak <buliabyak@gmail.com>
+#               2018 Kirill Okhotnikov <kirill.okhotnikov@gmail.com>
+#
+# 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 2 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA.
+#
+"""
+Provide the QR Code rendering.
+"""
+
+from __future__ import print_function
+
+from itertools import product
+
+import sys
+import inkex
+from inkex import Group, Rectangle, Use, PathElement
+
+
+class QRCode(object):
+    PAD0 = 0xEC
+    PAD1 = 0x11
+
+    def __init__(self, correction):
+        self.typeNumber = 1
+        self.errorCorrectLevel = correction
+        self.qrDataList = []
+        self.modules = []
+        self.moduleCount = 0
+
+    def getTypeNumber(self):
+        return self.typeNumber
+
+    def setTypeNumber(self, typeNumber):
+        self.typeNumber = typeNumber
+
+    def clearData(self):
+        self.qrDataList = []
+
+    def addData(self, data):
+        self.qrDataList.append(QR8BitByte(data))
+
+    def getDataCount(self):
+        return len(self.qrDataList)
+
+    def getData(self, index):
+        return self.qrDataList[index]
+
+    def isDark(self, row, col):
+        return (self.modules[row][col] if self.modules[row][col] is not None
+                else False)
+
+    def getModuleCount(self):
+        return self.moduleCount
+
+    def make(self):
+        self._make(False, self._getBestMaskPattern())
+
+    def _getBestMaskPattern(self):
+        minLostPoint = 0
+        pattern = 0
+        for i in range(8):
+            self._make(True, i)
+            lostPoint = QRUtil.getLostPoint(self)
+            if i == 0 or minLostPoint > lostPoint:
+                minLostPoint = lostPoint
+                pattern = i
+        return pattern
+
+    def _make(self, test, maskPattern):
+
+        self.moduleCount = self.typeNumber * 4 + 17
+        self.modules = [[None] * self.moduleCount
+                        for i in range(self.moduleCount)]
+
+        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)
+
+        data = QRCode._createData(
+                self.typeNumber,
+                self.errorCorrectLevel,
+                self.qrDataList)
+
+        self._mapData(data, maskPattern)
+
+    def _mapData(self, data, maskPattern):
+
+        rows = list(range(self.moduleCount))
+        cols = [col - 1 if col <= 6 else col
+                for col in range(self.moduleCount - 1, 0, -2)]
+        maskFunc = QRUtil.getMaskFunction(maskPattern)
+
+        byteIndex = 0
+        bitIndex = 7
+
+        for col in cols:
+            rows.reverse()
+            for row in rows:
+                for c in range(2):
+                    if self.modules[row][col - c] is None:
+
+                        dark = False
+                        if byteIndex < len(data):
+                            dark = ((data[byteIndex] >> bitIndex) & 1) == 1
+                        if maskFunc(row, col - c):
+                            dark = not dark
+                        self.modules[row][col - c] = dark
+
+                        bitIndex -= 1
+                        if bitIndex == -1:
+                            byteIndex += 1
+                            bitIndex = 7
+
+    def _setupPositionAdjustPattern(self):
+        pos = QRUtil.getPatternPosition(self.typeNumber)
+        for row in pos:
+            for col in pos:
+                if self.modules[row][col] is not None:
+                    continue
+                for r in range(-2, 3):
+                    for c in range(-2, 3):
+                        self.modules[row + r][col + c] = (
+                                r == -2 or r == 2 or c == -2 or c == 2
+                                or (r == 0 and c == 0))
+
+    def _setupPositionProbePattern(self, row, col):
+        for r in range(-1, 8):
+            for c in range(-1, 8):
+                if (row + r <= -1 or self.moduleCount <= row + r
+                        or col + c <= -1 or self.moduleCount <= col + c):
+                    continue
+                self.modules[row + r][col + c] = (
+                        (0 <= r <= 6 and (c == 0 or c == 6))
+                        or (0 <= c <= 6 and (r == 0 or r == 6))
+                        or (2 <= r <= 4 and 2 <= c <= 4))
+
+    def _setupTimingPattern(self):
+        for r in range(8, self.moduleCount - 8):
+            if self.modules[r][6] is not None:
+                continue
+            self.modules[r][6] = r % 2 == 0
+        for c in range(8, self.moduleCount - 8):
+            if self.modules[6][c] is not None:
+                continue
+            self.modules[6][c] = c % 2 == 0
+
+    def _setupTypeNumber(self, test):
+        bits = QRUtil.getBCHTypeNumber(self.typeNumber)
+        for i in range(18):
+            self.modules[i // 3][i % 3 + self.moduleCount - 8 - 3] = (
+                    not test and ((bits >> i) & 1) == 1)
+        for i in range(18):
+            self.modules[i % 3 + self.moduleCount - 8 - 3][i // 3] = (
+                    not test and ((bits >> i) & 1) == 1)
+
+    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
+        self.modules[self.moduleCount - 8][8] = not test
+
+    @staticmethod
+    def _createData(typeNumber, errorCorrectLevel, dataArray):
+
+        rsBlocks = RSBlock.getRSBlocks(typeNumber, errorCorrectLevel)
+
+        buffer = BitBuffer()
+
+        for data in dataArray:
+            buffer.put(data.getMode(), 4)
+            buffer.put(data.getLength(), data.getLengthInBits(typeNumber))
+            data.write(buffer)
+
+        totalDataCount = sum(rsBlock.getDataCount()
+                             for rsBlock in rsBlocks)
+
+        if buffer.getLengthInBits() > totalDataCount * 8:
+            raise Exception('code length overflow. (%s>%s)' %
+                            (buffer.getLengthInBits(), totalDataCount * 8))
+
+        # end code
+        if buffer.getLengthInBits() + 4 <= totalDataCount * 8:
+            buffer.put(0, 4)
+
+        # padding
+        while buffer.getLengthInBits() % 8 != 0:
+            buffer.put(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 = [None] * len(rsBlocks)
+        ecdata = [None] * len(rsBlocks)
+
+        for r in range(len(rsBlocks)):
+
+            dcCount = rsBlocks[r].getDataCount()
+            ecCount = rsBlocks[r].getTotalCount() - dcCount
+
+            maxDcCount = max(maxDcCount, dcCount)
+            maxEcCount = max(maxEcCount, ecCount)
+
+            dcdata[r] = [0] * dcCount
+            for i in range(len(dcdata[r])):
+                dcdata[r][i] = 0xff & buffer.getBuffer()[i + offset]
+            offset += dcCount
+
+            rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount)
+            rawPoly = Polynomial(dcdata[r], rsPoly.getLength() - 1)
+
+            modPoly = rawPoly.mod(rsPoly)
+            ecdata[r] = [0] * (rsPoly.getLength() - 1)
+            for i in range(len(ecdata[r])):
+                modIndex = i + modPoly.getLength() - len(ecdata[r])
+                ecdata[r][i] = modPoly.get(modIndex) if modIndex >= 0 else 0
+
+        totalCodeCount = sum(rsBlock.getTotalCount()
+                             for rsBlock in rsBlocks)
+
+        data = [0] * 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
+
+    @staticmethod
+    def getMinimumQRCode(data, errorCorrectLevel):
+        mode = Mode.MODE_8BIT_BYTE  # fixed to 8bit byte
+        qr = QRCode(correction=errorCorrectLevel)
+        qr.addData(data)
+        length = qr.getData(0).getLength()
+        for typeNumber in range(1, 11):
+            if length <= QRUtil.getMaxLength(
+                    typeNumber, mode, errorCorrectLevel):
+                qr.setTypeNumber(typeNumber)
+                break
+        qr.make()
+        return qr
+
+
+class Mode(object):
+    MODE_NUMBER = 1 << 0
+    MODE_ALPHA_NUM = 1 << 1
+    MODE_8BIT_BYTE = 1 << 2
+    MODE_KANJI = 1 << 3
+
+
+class MaskPattern(object):
+    PATTERN000 = 0
+    PATTERN001 = 1
+    PATTERN010 = 2
+    PATTERN011 = 3
+    PATTERN100 = 4
+    PATTERN101 = 5
+    PATTERN110 = 6
+    PATTERN111 = 7
+
+
+class QRUtil(object):
+    @staticmethod
+    def getPatternPosition(typeNumber):
+        return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1]
+
+    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]
+    ]
+
+    MAX_LENGTH = [
+        [[41, 25, 17, 10], [34, 20, 14, 8], [27, 16, 11, 7], [17, 10, 7, 4]],
+        [[77, 47, 32, 20], [63, 38, 26, 16], [48, 29, 20, 12], [34, 20, 14, 8]],
+        [[127, 77, 53, 32], [101, 61, 42, 26], [77, 47, 32, 20], [58, 35, 24, 15]],
+        [[187, 114, 78, 48], [149, 90, 62, 38], [111, 67, 46, 28], [82, 50, 34, 21]],
+        [[255, 154, 106, 65], [202, 122, 84, 52], [144, 87, 60, 37], [106, 64, 44, 27]],
+        [[322, 195, 134, 82], [255, 154, 106, 65], [178, 108, 74, 45], [139, 84, 58, 36]],
+        [[370, 224, 154, 95], [293, 178, 122, 75], [207, 125, 86, 53], [154, 93, 64, 39]],
+        [[461, 279, 192, 118], [365, 221, 152, 93], [259, 157, 108, 66], [202, 122, 84, 52]],
+        [[552, 335, 230, 141], [432, 262, 180, 111], [312, 189, 130, 80], [235, 143, 98, 60]],
+        [[652, 395, 271, 167], [513, 311, 213, 131], [364, 221, 151, 93], [288, 174, 119, 74]]
+    ]
+
+    @staticmethod
+    def getMaxLength(typeNumber, mode, errorCorrectLevel):
+        e = {1: 0, 0: 1, 3: 2, 2: 3}[errorCorrectLevel]
+        m = {
+            Mode.MODE_NUMBER: 0,
+            Mode.MODE_ALPHA_NUM: 1,
+            Mode.MODE_8BIT_BYTE: 2,
+            Mode.MODE_KANJI: 3
+        }[mode]
+        return QRUtil.MAX_LENGTH[typeNumber - 1][e][m]
+
+    @staticmethod
+    def getErrorCorrectPolynomial(errorCorrectLength):
+        a = Polynomial([1])
+        for i in range(errorCorrectLength):
+            a = a.multiply(Polynomial([1, QRMath.gexp(i)]))
+        return a
+
+    @staticmethod
+    def getMaskFunction(maskPattern):
+        return {
+            MaskPattern.PATTERN000:
+                lambda i, j: (i + j) % 2 == 0,
+            MaskPattern.PATTERN001:
+                lambda i, j: i % 2 == 0,
+            MaskPattern.PATTERN010:
+                lambda i, j: j % 3 == 0,
+            MaskPattern.PATTERN011:
+                lambda i, j: (i + j) % 3 == 0,
+            MaskPattern.PATTERN100:
+                lambda i, j: (i // 2 + j // 3) % 2 == 0,
+            MaskPattern.PATTERN101:
+                lambda i, j: (i * j) % 2 + (i * j) % 3 == 0,
+            MaskPattern.PATTERN110:
+                lambda i, j: ((i * j) % 2 + (i * j) % 3) % 2 == 0,
+            MaskPattern.PATTERN111:
+                lambda i, j: ((i * j) % 3 + (i + j) % 2) % 2 == 0
+        }[maskPattern]
+
+    @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
+
+    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 stringToBytes(s):
+        return [ord(c) & 0xff for c in s]
+
+
+class QR8BitByte(object):
+
+    def __init__(self, data):
+        self.mode = Mode.MODE_8BIT_BYTE
+        self.data = data
+
+    def getMode(self):
+        return self.mode
+
+    def getData(self):
+        return self.data
+
+    '''
+    def write(self, buffer): raise Exception('not implemented.')
+    def getLength(self): raise Exception('not implemented.')
+    '''
+
+    def write(self, buffer):
+        data = QRUtil.stringToBytes(self.getData())
+        for d in data:
+            buffer.put(d, 8)
+
+    def getLength(self):
+        return len(QRUtil.stringToBytes(self.getData()))
+
+    def getLengthInBits(self, type):
+        if 1 <= type < 10:  # 1 - 9
+            return {
+                Mode.MODE_NUMBER: 10,
+                Mode.MODE_ALPHA_NUM: 9,
+                Mode.MODE_8BIT_BYTE: 8,
+                Mode.MODE_KANJI: 8
+            }[self.mode]
+
+        elif type < 27:  # 10 - 26
+            return {
+                Mode.MODE_NUMBER: 12,
+                Mode.MODE_ALPHA_NUM: 11,
+                Mode.MODE_8BIT_BYTE: 16,
+                Mode.MODE_KANJI: 10
+            }[self.mode]
+
+        elif type < 41:  # 27 - 40
+            return {
+                Mode.MODE_NUMBER: 14,
+                Mode.MODE_ALPHA_NUM: 13,
+                Mode.MODE_8BIT_BYTE: 16,
+                Mode.MODE_KANJI: 12
+            }[self.mode]
+
+        else:
+            raise Exception('type:%s' % type)
+
+
+class QRMath(object):
+    EXP_TABLE = None
+    LOG_TABLE = None
+
+    @staticmethod
+    def _init():
+
+        QRMath.EXP_TABLE = [0] * 256
+        for i in range(256):
+            QRMath.EXP_TABLE[i] = (1 << i if i < 8 else
+                                   QRMath.EXP_TABLE[i - 4] ^ QRMath.EXP_TABLE[i - 5] ^
+                                   QRMath.EXP_TABLE[i - 6] ^ QRMath.EXP_TABLE[i - 8])
+
+        QRMath.LOG_TABLE = [0] * 256
+        for i in range(255):
+            QRMath.LOG_TABLE[QRMath.EXP_TABLE[i]] = i
+
+    @staticmethod
+    def glog(n):
+        if n < 1:
+            raise Exception('log(%s)' % n)
+        return QRMath.LOG_TABLE[n]
+
+    @staticmethod
+    def gexp(n):
+        while n < 0:
+            n += 255
+        while n >= 256:
+            n -= 255
+        return QRMath.EXP_TABLE[n]
+
+
+# initialize statics
+QRMath._init()
+
+
+class Polynomial(object):
+    def __init__(self, num, shift=0):
+        offset = 0
+        length = len(num)
+        while offset < length and num[offset] == 0:
+            offset += 1
+        self.num = num[offset:] + [0] * shift
+
+    def get(self, index):
+        return self.num[index]
+
+    def getLength(self):
+        return len(self.num)
+
+    def __repr__(self):
+        return ','.join([str(self.get(i))
+                         for i in range(self.getLength())])
+
+    def toLogString(self):
+        return ','.join([str(QRMath.glog(self.get(i)))
+                         for i in range(self.getLength())])
+
+    def multiply(self, e):
+        num = [0] * (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 Polynomial(num)
+
+    def mod(self, e):
+        if self.getLength() - e.getLength() < 0:
+            return self
+        ratio = QRMath.glog(self.get(0)) - QRMath.glog(e.get(0))
+        num = self.num[:]
+        for i in range(e.getLength()):
+            num[i] ^= QRMath.gexp(QRMath.glog(e.get(i)) + ratio)
+        return Polynomial(num).mod(e)
+
+
+class RSBlock(object):
+    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]
+    ]
+
+    def __init__(self, totalCount, dataCount):
+        self.totalCount = totalCount
+        self.dataCount = dataCount
+
+    def getDataCount(self):
+        return self.dataCount
+
+    def getTotalCount(self):
+        return self.totalCount
+
+    def __repr__(self):
+        return '(total=%s,data=%s)' % (self.totalCount, self.dataCount)
+
+    @staticmethod
+    def getRSBlocks(typeNumber, errorCorrectLevel):
+        rsBlock = RSBlock.getRsBlockTable(typeNumber, 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]
+            list += [RSBlock(totalCount, dataCount)] * count
+        return list
+
+    @staticmethod
+    def getRsBlockTable(typeNumber, errorCorrectLevel):
+        return {
+            1: RSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0],
+            0: RSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1],
+            3: RSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2],
+            2: RSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3]
+        }[errorCorrectLevel]
+
+
+class BitBuffer(object):
+    def __init__(self, inclements=32):
+        self.inclements = inclements
+        self.buffer = [0] * self.inclements
+        self.length = 0
+
+    def getBuffer(self):
+        return self.buffer
+
+    def getLengthInBits(self):
+        return self.length
+
+    def get(self, index):
+        return ((self.buffer[index // 8] >> (7 - index % 8)) & 1) == 1
+
+    def putBit(self, bit):
+        if self.length == len(self.buffer) * 8:
+            self.buffer += [0] * self.inclements
+        if bit:
+            self.buffer[self.length // 8] |= (0x80 >> (self.length % 8))
+        self.length += 1
+
+    def put(self, num, length):
+        for i in range(length):
+            self.putBit(((num >> (length - i - 1)) & 1) == 1)
+
+    def __repr__(self):
+        return ''.join('1' if self.get(i) else '0'
+                       for i in range(self.getLengthInBits()))
+
+
+class GridDrawer(object):
+    """Mechanism to draw grids of boxes"""
+    def __init__(self, invert_code, smooth_factor):
+        self.invert_code = invert_code
+        self.smoothFactor = smooth_factor
+        self.grid = None
+
+    def set_grid(self, grid):
+        if len({len(g) for g in grid}) != 1:
+            raise Exception("The array is not rectangular")
+        else:
+            self.grid = grid
+
+    def row_count(self):
+        return len(self.grid) if self.grid is not None else 0
+
+    def col_count(self):
+        return len(self.grid[0]) if self.row_count() > 0 else 0
+
+    def isDark(self, col, row):
+        inside = col >= 0 and 0 <= row < self.row_count() and col < self.col_count()
+        return False if not inside else self.grid[row][col] != self.invert_code
+
+    @staticmethod
+    def moveByDirection(xyd):
+        dm = {0: (1, 0), 1: (0, -1), 2: (-1, 0), 3: (0, 1)}
+        return xyd[0] + dm[xyd[2]][0], xyd[1] + dm[xyd[2]][1]
+
+    @staticmethod
+    def makeDirectionsTable():
+        result = []
+        for cfg in product(range(2), repeat=4):
+            result.append([])
+            for d in range(4):
+                if cfg[3 - d] == 0 and cfg[3 - (d - 1) % 4] != 0:
+                    result[-1].append(d)
+        return result
+
+    def createVertexesForAdvDrawer(self):
+        dirTable = self.makeDirectionsTable()
+        result = []
+        # Create vertex
+        for row in range(self.row_count() + 1):
+            for col in range(self.col_count() + 1):
+                indx = (2 ** 0 if self.isDark(col - 0, row - 1) else 0) + \
+                       (2 ** 1 if self.isDark(col - 1, row - 1) else 0) + \
+                       (2 ** 2 if self.isDark(col - 1, row - 0) else 0) + \
+                       (2 ** 3 if self.isDark(col - 0, row - 0) else 0)
+
+                for d in dirTable[indx]:
+                    result.append((col, row, d, len(dirTable[indx]) > 1))
+
+        return result
+
+    def getSmoothPosition(self, v, extraSmoothFactor=1.0):
+        vn = self.moveByDirection(v)
+        sc = extraSmoothFactor * self.smoothFactor / 2.0
+        sc1 = 1.0 - sc
+        return (v[0] * sc1 + vn[0] * sc, v[1] * sc1 + vn[1] * sc), (v[0] * sc + vn[0] * sc1, v[1] * sc + vn[1] * sc1)
+
+
+class QrCode(inkex.GenerateExtension):
+    """Generate QR Code Extension"""
+    def add_arguments(self, pars):
+        pars.add_argument("--text", default='www.inkscape.org')
+        pars.add_argument("--typenumber", type=int, default=0)
+        pars.add_argument("--correctionlevel", type=int, default=0)
+        pars.add_argument("--encoding", default="latin_1")
+        pars.add_argument("--modulesize", type=float, default=10.0)
+        pars.add_argument("--invert", type=inkex.Boolean, default="false")
+        pars.add_argument("--drawtype", default="greedy")
+        pars.add_argument("--smoothval", type=float, default=0.2)
+        pars.add_argument("--symbolid", default='')
+        pars.add_argument("--groupid", default='')
+
+    def generate(self):
+
+        scale = self.svg.unittouu('1px')  # convert to document units
+        opt = self.options
+
+        if not opt.text:
+            raise inkex.AbortExtension('Please enter an input text')
+        elif opt.drawtype == "symbol" and opt.symbolid == "":
+            raise inkex.AbortExtension('Please enter symbol id')
+
+        if sys.version_info >= (3, 0, 0):
+            # for Python 3 ugly hack to represent bytes as str for Python2 compatibility
+            text_bytes = bytes(opt.text, opt.encoding).decode("latin_1")
+            text_str = str(opt.text)
+        else:
+            text_bytes = opt.text
+            text_str = opt.text.decode('utf-8')
+
+        grp = Group()
+        grp.set('inkscape:label', 'QR Code: ' + text_str)
+        if opt.groupid:
+            grp.set('id', opt.groupid)
+        pos_x, pos_y = self.svg.namedview.center
+        grp.transform.add_translate(pos_x, pos_y)
+        if scale:
+            grp.transform.add_scale(scale)
+
+        # GENERATE THE QRCODE
+        if opt.typenumber == 0:
+            # Automatic QR code size`
+            code = QRCode.getMinimumQRCode(text_bytes, opt.correctionlevel)
+        else:
+            # Manual QR code size
+            code = QRCode(correction=opt.correctionlevel)
+            code.setTypeNumber(int(opt.typenumber))
+            code.addData(text_bytes)
+            code.make()
+
+        self.boxsize = opt.modulesize
+        self.invert_code = opt.invert
+        self.margin = 4
+        self.draw = GridDrawer(opt.invert, opt.smoothval)
+        self.draw.set_grid(code.modules)
+        self.render_svg(grp, opt.drawtype)
+        return grp
+
+    def render_adv(self, greedy):
+
+        verts = self.draw.createVertexesForAdvDrawer()
+        qrPathStr = ""
+        while len(verts) > 0:
+            vertsIndexStart = len(verts) - 1
+            vertsIndexCur = vertsIndexStart
+            ringIndexes = []
+            while True:
+                ringIndexes.append(vertsIndexCur)
+                nextPos = self.draw.moveByDirection(verts[vertsIndexCur])
+                nextIndexes = [i for i, x in enumerate(verts) if x[0] == nextPos[0] and x[1] == nextPos[1]]
+                if len(nextIndexes) == 0 or len(nextIndexes) > 2:
+                    raise Exception("Vertex " + str(next_c) + " has no connections")
+                elif len(nextIndexes) == 1:
+                    vertsIndexNext = nextIndexes[0]
+                else:
+                    if {verts[nextIndexes[0]][2], verts[nextIndexes[1]][2]} != {(verts[vertsIndexCur][2] - 1) % 4, (verts[vertsIndexCur][2] + 1) % 4}:
+                        raise Exception("Bad next vertex directions " + str(verts[nextIndexes[0]]) + str(verts[nextIndexes[1]]))
+
+                    # Greedy - CCW turn, proud and neutral CW turn
+                    vertsIndexNext = nextIndexes[0] if (greedy == "g") == (verts[nextIndexes[0]][2] == (verts[vertsIndexCur][2] + 1) % 4) else nextIndexes[1]
+
+                if vertsIndexNext == vertsIndexStart:
+                    break
+
+                vertsIndexCur = vertsIndexNext
+
+            posStart, _ = self.draw.getSmoothPosition(verts[ringIndexes[0]])
+            qrPathStr += "M %f,%f " % self.get_svg_pos(posStart[0], posStart[1])
+            for ri in range(len(ringIndexes)):
+                vc = verts[ringIndexes[ri]]
+                vn = verts[ringIndexes[(ri + 1) % len(ringIndexes)]]
+                if vn[2] != vc[2]:
+                    if (greedy != "n") or not vn[3]:
+                        # Add bezier
+                        # Opt length http://spencermortensen.com/articles/bezier-circle/
+                        # c = 0.552284749
+                        ex = 1 - 0.552284749
+                        _, bs = self.draw.getSmoothPosition(vc)
+                        _, bp1 = self.draw.getSmoothPosition(vc, ex)
+                        bp2, _ = self.draw.getSmoothPosition(vn, ex)
+                        bf, _ = self.draw.getSmoothPosition(vn)
+                        qrPathStr += "L %f,%f " % self.get_svg_pos(bs[0], bs[1])
+                        qrPathStr += "C %f,%f %f,%f %f,%f " \
+                                     % (self.get_svg_pos(bp1[0], bp1[1]) + self.get_svg_pos(bp2[0], bp2[1]) +
+                                        self.get_svg_pos(bf[0], bf[1]))
+                    else:
+                        # Add straight
+                        qrPathStr += "L %f,%f " % self.get_svg_pos(vn[0], vn[1])
+
+            qrPathStr += "z "
+
+            # Delete already processed vertex
+            for i in sorted(ringIndexes, reverse=True):
+                del verts[i]
+
+        path = PathElement()
+        path.set('d', qrPathStr)
+        return path
+
+    def render_obsolete(self):
+        for row in range(self.draw.row_count()):
+            for col in range(self.draw.col_count()):
+                if self.draw.isDark(col, row):
+                    x, y = self.get_svg_pos(col, row)
+                    return Rectangle.new(x, y, self.boxsize, self.boxsize)
+
+    def render_path(self, pointStr):
+        singlePath = self.get_icon_path_str(pointStr)
+        pathStr = ""
+        for row in range(self.draw.row_count()):
+            for col in range(self.draw.col_count()):
+                if self.draw.isDark(col, row):
+                    x, y = self.get_svg_pos(col, row)
+                    pathStr += "M %f,%f " % (x, y) + singlePath + " z "
+
+        path = PathElement()
+        path.set('d', pathStr)
+        return path
+
+    def render_symbol(self):
+        symbol = self.svg.getElementById(self.options.symbolid)
+        if symbol is None:
+            raise inkex.AbortExtension("Can't find symbol " + self.options.symbolid)
+        bbox = symbol.path.bounding_box()
+        transform = inkex.Transform(scale=(
+            float(self.boxsize) / bbox.width,
+            float(self.boxsize) / bbox.height,
+        ))
+        for row in range(self.draw.row_count()):
+            for col in range(self.draw.col_count()):
+                if self.draw.isDark(col, row):
+                    x, y = self.get_svg_pos(col, row)
+                    # Inkscape doesn't support width/height on use tags
+                    return Use.new(symbol, x, y, transform=transform)
+
+    render_pathcustom = lambda self: self.render_path(self.options.symbolid)
+    render_neutral = lambda self: self.render_adv("n")
+    render_greedy = lambda self: self.render_adv("g")
+    render_proud = lambda self: self.render_adv("p")
+    render_simple = lambda self: self.render_path("h 1 v 1 h -1")
+
+    def render_circle(self):
+        s = 'm 0.5,0.5 ' \
+            'c 0.2761423745,0 0.5,0.2238576255 0.5,0.5 ' \
+            'c 0,0.2761423745 -0.2238576255,0.5 -0.5,0.5 ' \
+            'c -0.2761423745,0 -0.5,-0.2238576255 -0.5,-0.5 ' \
+            'c 0,-0.2761423745 0.2238576255,-0.5 0.5,-0.5'
+        return self.render_path(s)
+
+    def render_svg(self, grp, drawtype):
+        """Render to svg"""
+        drawer = getattr(self, "render_" + drawtype, self.render_obsolete)
+        if drawer is None:
+            raise Exception("Unknown draw type: " + drawtype)
+
+        canvas_width = (self.draw.col_count() + 2 * self.margin) * self.boxsize
+        canvas_height = (self.draw.row_count() + 2 * self.margin) * self.boxsize
+
+        # white background providing margin:
+        rect = grp.add(Rectangle.new(0, 0, canvas_width, canvas_height))
+        rect.style['stroke'] = 'none'
+        rect.style['fill'] = "black" if self.invert_code else "white"
+
+        qrg = grp.add(Group())
+        qrg.style['stroke'] = 'none'
+        qrg.style['fill'] = "white" if self.invert_code else "black"
+        qrg.add(drawer())
+
+    def get_svg_pos(self, col, row):
+        return (col + self.margin) * self.boxsize, (row + self.margin) * self.boxsize
+
+    def get_icon_path_str(self, pointStr):
+        result = ""
+        digBuffer = ""
+        for c in pointStr:
+            if c.isdigit() or c == "-" or c == '.':
+                digBuffer += c
+            else:
+                if len(digBuffer) > 0:
+                    result += str(float(digBuffer) * self.boxsize)
+                    digBuffer = ""
+                result += c
+
+        if len(digBuffer) > 0:
+            result += str(float(digBuffer) * self.boxsize)
+
+        return result
+
+
+
+if __name__ == '__main__':
+    QrCode().run()