externalize zxing lib, fix gradle build

1 files changed, 0 insertions, 524 deletions

diff --git a/OpenPGP-Keychain/src/com/google/zxing/qrcode/encoder/MatrixUtil.java b/OpenPGP-Keychain/src/com/google/zxing/qrcode/encoder/MatrixUtil.java
deleted file mode 100644
index 3d434e675..000000000
--- a/OpenPGP-Keychain/src/com/google/zxing/qrcode/encoder/MatrixUtil.java
+++ /dev/null
@@ -1,524 +0,0 @@
-/*
- * Copyright 2008 ZXing authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.google.zxing.qrcode.encoder;
-
-import com.google.zxing.WriterException;
-import com.google.zxing.common.BitArray;
-import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
-
-/**
- * @author satorux@google.com (Satoru Takabayashi) - creator
- * @author dswitkin@google.com (Daniel Switkin) - ported from C++
- */
-public final class MatrixUtil {
-
-  private MatrixUtil() {
-    // do nothing
-  }
-
-  private static final int[][] POSITION_DETECTION_PATTERN =  {
-      {1, 1, 1, 1, 1, 1, 1},
-      {1, 0, 0, 0, 0, 0, 1},
-      {1, 0, 1, 1, 1, 0, 1},
-      {1, 0, 1, 1, 1, 0, 1},
-      {1, 0, 1, 1, 1, 0, 1},
-      {1, 0, 0, 0, 0, 0, 1},
-      {1, 1, 1, 1, 1, 1, 1},
-  };
-
-  private static final int[][] HORIZONTAL_SEPARATION_PATTERN = {
-      {0, 0, 0, 0, 0, 0, 0, 0},
-  };
-
-  private static final int[][] VERTICAL_SEPARATION_PATTERN = {
-      {0}, {0}, {0}, {0}, {0}, {0}, {0},
-  };
-
-  private static final int[][] POSITION_ADJUSTMENT_PATTERN = {
-      {1, 1, 1, 1, 1},
-      {1, 0, 0, 0, 1},
-      {1, 0, 1, 0, 1},
-      {1, 0, 0, 0, 1},
-      {1, 1, 1, 1, 1},
-  };
-
-  // From Appendix E. Table 1, JIS0510X:2004 (p 71). The table was double-checked by komatsu.
-  private static final int[][] POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE = {
-      {-1, -1, -1, -1,  -1,  -1,  -1},  // Version 1
-      { 6, 18, -1, -1,  -1,  -1,  -1},  // Version 2
-      { 6, 22, -1, -1,  -1,  -1,  -1},  // Version 3
-      { 6, 26, -1, -1,  -1,  -1,  -1},  // Version 4
-      { 6, 30, -1, -1,  -1,  -1,  -1},  // Version 5
-      { 6, 34, -1, -1,  -1,  -1,  -1},  // Version 6
-      { 6, 22, 38, -1,  -1,  -1,  -1},  // Version 7
-      { 6, 24, 42, -1,  -1,  -1,  -1},  // Version 8
-      { 6, 26, 46, -1,  -1,  -1,  -1},  // Version 9
-      { 6, 28, 50, -1,  -1,  -1,  -1},  // Version 10
-      { 6, 30, 54, -1,  -1,  -1,  -1},  // Version 11
-      { 6, 32, 58, -1,  -1,  -1,  -1},  // Version 12
-      { 6, 34, 62, -1,  -1,  -1,  -1},  // Version 13
-      { 6, 26, 46, 66,  -1,  -1,  -1},  // Version 14
-      { 6, 26, 48, 70,  -1,  -1,  -1},  // Version 15
-      { 6, 26, 50, 74,  -1,  -1,  -1},  // Version 16
-      { 6, 30, 54, 78,  -1,  -1,  -1},  // Version 17
-      { 6, 30, 56, 82,  -1,  -1,  -1},  // Version 18
-      { 6, 30, 58, 86,  -1,  -1,  -1},  // Version 19
-      { 6, 34, 62, 90,  -1,  -1,  -1},  // Version 20
-      { 6, 28, 50, 72,  94,  -1,  -1},  // Version 21
-      { 6, 26, 50, 74,  98,  -1,  -1},  // Version 22
-      { 6, 30, 54, 78, 102,  -1,  -1},  // Version 23
-      { 6, 28, 54, 80, 106,  -1,  -1},  // Version 24
-      { 6, 32, 58, 84, 110,  -1,  -1},  // Version 25
-      { 6, 30, 58, 86, 114,  -1,  -1},  // Version 26
-      { 6, 34, 62, 90, 118,  -1,  -1},  // Version 27
-      { 6, 26, 50, 74,  98, 122,  -1},  // Version 28
-      { 6, 30, 54, 78, 102, 126,  -1},  // Version 29
-      { 6, 26, 52, 78, 104, 130,  -1},  // Version 30
-      { 6, 30, 56, 82, 108, 134,  -1},  // Version 31
-      { 6, 34, 60, 86, 112, 138,  -1},  // Version 32
-      { 6, 30, 58, 86, 114, 142,  -1},  // Version 33
-      { 6, 34, 62, 90, 118, 146,  -1},  // Version 34
-      { 6, 30, 54, 78, 102, 126, 150},  // Version 35
-      { 6, 24, 50, 76, 102, 128, 154},  // Version 36
-      { 6, 28, 54, 80, 106, 132, 158},  // Version 37
-      { 6, 32, 58, 84, 110, 136, 162},  // Version 38
-      { 6, 26, 54, 82, 110, 138, 166},  // Version 39
-      { 6, 30, 58, 86, 114, 142, 170},  // Version 40
-  };
-
-  // Type info cells at the left top corner.
-  private static final int[][] TYPE_INFO_COORDINATES = {
-      {8, 0},
-      {8, 1},
-      {8, 2},
-      {8, 3},
-      {8, 4},
-      {8, 5},
-      {8, 7},
-      {8, 8},
-      {7, 8},
-      {5, 8},
-      {4, 8},
-      {3, 8},
-      {2, 8},
-      {1, 8},
-      {0, 8},
-  };
-
-  // From Appendix D in JISX0510:2004 (p. 67)
-  private static final int VERSION_INFO_POLY = 0x1f25;  // 1 1111 0010 0101
-
-  // From Appendix C in JISX0510:2004 (p.65).
-  private static final int TYPE_INFO_POLY = 0x537;
-  private static final int TYPE_INFO_MASK_PATTERN = 0x5412;
-
-  // Set all cells to -1.  -1 means that the cell is empty (not set yet).
-  //
-  // JAVAPORT: We shouldn't need to do this at all. The code should be rewritten to begin encoding
-  // with the ByteMatrix initialized all to zero.
-  public static void clearMatrix(ByteMatrix matrix) {
-    matrix.clear((byte) -1);
-  }
-
-  // Build 2D matrix of QR Code from "dataBits" with "ecLevel", "version" and "getMaskPattern". On
-  // success, store the result in "matrix" and return true.
-  public static void buildMatrix(BitArray dataBits, ErrorCorrectionLevel ecLevel, int version,
-      int maskPattern, ByteMatrix matrix) throws WriterException {
-    clearMatrix(matrix);
-    embedBasicPatterns(version, matrix);
-    // Type information appear with any version.
-    embedTypeInfo(ecLevel, maskPattern, matrix);
-    // Version info appear if version >= 7.
-    maybeEmbedVersionInfo(version, matrix);
-    // Data should be embedded at end.
-    embedDataBits(dataBits, maskPattern, matrix);
-  }
-
-  // Embed basic patterns. On success, modify the matrix and return true.
-  // The basic patterns are:
-  // - Position detection patterns
-  // - Timing patterns
-  // - Dark dot at the left bottom corner
-  // - Position adjustment patterns, if need be
-  public static void embedBasicPatterns(int version, ByteMatrix matrix) throws WriterException {
-    // Let's get started with embedding big squares at corners.
-    embedPositionDetectionPatternsAndSeparators(matrix);
-    // Then, embed the dark dot at the left bottom corner.
-    embedDarkDotAtLeftBottomCorner(matrix);
-
-    // Position adjustment patterns appear if version >= 2.
-    maybeEmbedPositionAdjustmentPatterns(version, matrix);
-    // Timing patterns should be embedded after position adj. patterns.
-    embedTimingPatterns(matrix);
-  }
-
-  // Embed type information. On success, modify the matrix.
-  public static void embedTypeInfo(ErrorCorrectionLevel ecLevel, int maskPattern, ByteMatrix matrix)
-      throws WriterException {
-    BitArray typeInfoBits = new BitArray();
-    makeTypeInfoBits(ecLevel, maskPattern, typeInfoBits);
-
-    for (int i = 0; i < typeInfoBits.getSize(); ++i) {
-      // Place bits in LSB to MSB order.  LSB (least significant bit) is the last value in
-      // "typeInfoBits".
-      boolean bit = typeInfoBits.get(typeInfoBits.getSize() - 1 - i);
-
-      // Type info bits at the left top corner. See 8.9 of JISX0510:2004 (p.46).
-      int x1 = TYPE_INFO_COORDINATES[i][0];
-      int y1 = TYPE_INFO_COORDINATES[i][1];
-      matrix.set(x1, y1, bit);
-
-      if (i < 8) {
-        // Right top corner.
-        int x2 = matrix.getWidth() - i - 1;
-        int y2 = 8;
-        matrix.set(x2, y2, bit);
-      } else {
-        // Left bottom corner.
-        int x2 = 8;
-        int y2 = matrix.getHeight() - 7 + (i - 8);
-        matrix.set(x2, y2, bit);
-      }
-    }
-  }
-
-  // Embed version information if need be. On success, modify the matrix and return true.
-  // See 8.10 of JISX0510:2004 (p.47) for how to embed version information.
-  public static void maybeEmbedVersionInfo(int version, ByteMatrix matrix) throws WriterException {
-    if (version < 7) {  // Version info is necessary if version >= 7.
-      return;  // Don't need version info.
-    }
-    BitArray versionInfoBits = new BitArray();
-    makeVersionInfoBits(version, versionInfoBits);
-
-    int bitIndex = 6 * 3 - 1;  // It will decrease from 17 to 0.
-    for (int i = 0; i < 6; ++i) {
-      for (int j = 0; j < 3; ++j) {
-        // Place bits in LSB (least significant bit) to MSB order.
-        boolean bit = versionInfoBits.get(bitIndex);
-        bitIndex--;
-        // Left bottom corner.
-        matrix.set(i, matrix.getHeight() - 11 + j, bit);
-        // Right bottom corner.
-        matrix.set(matrix.getHeight() - 11 + j, i, bit);
-      }
-    }
-  }
-
-  // Embed "dataBits" using "getMaskPattern". On success, modify the matrix and return true.
-  // For debugging purposes, it skips masking process if "getMaskPattern" is -1.
-  // See 8.7 of JISX0510:2004 (p.38) for how to embed data bits.
-  public static void embedDataBits(BitArray dataBits, int maskPattern, ByteMatrix matrix)
-      throws WriterException {
-    int bitIndex = 0;
-    int direction = -1;
-    // Start from the right bottom cell.
-    int x = matrix.getWidth() - 1;
-    int y = matrix.getHeight() - 1;
-    while (x > 0) {
-      // Skip the vertical timing pattern.
-      if (x == 6) {
-        x -= 1;
-      }
-      while (y >= 0 && y < matrix.getHeight()) {
-        for (int i = 0; i < 2; ++i) {
-          int xx = x - i;
-          // Skip the cell if it's not empty.
-          if (!isEmpty(matrix.get(xx, y))) {
-            continue;
-          }
-          boolean bit;
-          if (bitIndex < dataBits.getSize()) {
-            bit = dataBits.get(bitIndex);
-            ++bitIndex;
-          } else {
-            // Padding bit. If there is no bit left, we'll fill the left cells with 0, as described
-            // in 8.4.9 of JISX0510:2004 (p. 24).
-            bit = false;
-          }
-
-          // Skip masking if mask_pattern is -1.
-          if (maskPattern != -1) {
-            if (MaskUtil.getDataMaskBit(maskPattern, xx, y)) {
-              bit = !bit;
-            }
-          }
-          matrix.set(xx, y, bit);
-        }
-        y += direction;
-      }
-      direction = -direction;  // Reverse the direction.
-      y += direction;
-      x -= 2;  // Move to the left.
-    }
-    // All bits should be consumed.
-    if (bitIndex != dataBits.getSize()) {
-      throw new WriterException("Not all bits consumed: " + bitIndex + '/' + dataBits.getSize());
-    }
-  }
-
-  // Return the position of the most significant bit set (to one) in the "value". The most
-  // significant bit is position 32. If there is no bit set, return 0. Examples:
-  // - findMSBSet(0) => 0
-  // - findMSBSet(1) => 1
-  // - findMSBSet(255) => 8
-  public static int findMSBSet(int value) {
-    int numDigits = 0;
-    while (value != 0) {
-      value >>>= 1;
-      ++numDigits;
-    }
-    return numDigits;
-  }
-
-  // Calculate BCH (Bose-Chaudhuri-Hocquenghem) code for "value" using polynomial "poly". The BCH
-  // code is used for encoding type information and version information.
-  // Example: Calculation of version information of 7.
-  // f(x) is created from 7.
-  //   - 7 = 000111 in 6 bits
-  //   - f(x) = x^2 + x^1 + x^0
-  // g(x) is given by the standard (p. 67)
-  //   - g(x) = x^12 + x^11 + x^10 + x^9 + x^8 + x^5 + x^2 + 1
-  // Multiply f(x) by x^(18 - 6)
-  //   - f'(x) = f(x) * x^(18 - 6)
-  //   - f'(x) = x^14 + x^13 + x^12
-  // Calculate the remainder of f'(x) / g(x)
-  //         x^2
-  //         __________________________________________________
-  //   g(x) )x^14 + x^13 + x^12
-  //         x^14 + x^13 + x^12 + x^11 + x^10 + x^7 + x^4 + x^2
-  //         --------------------------------------------------
-  //                              x^11 + x^10 + x^7 + x^4 + x^2
-  //
-  // The remainder is x^11 + x^10 + x^7 + x^4 + x^2
-  // Encode it in binary: 110010010100
-  // The return value is 0xc94 (1100 1001 0100)
-  //
-  // Since all coefficients in the polynomials are 1 or 0, we can do the calculation by bit
-  // operations. We don't care if cofficients are positive or negative.
-  public static int calculateBCHCode(int value, int poly) {
-    // If poly is "1 1111 0010 0101" (version info poly), msbSetInPoly is 13. We'll subtract 1
-    // from 13 to make it 12.
-    int msbSetInPoly = findMSBSet(poly);
-    value <<= msbSetInPoly - 1;
-    // Do the division business using exclusive-or operations.
-    while (findMSBSet(value) >= msbSetInPoly) {
-      value ^= poly << (findMSBSet(value) - msbSetInPoly);
-    }
-    // Now the "value" is the remainder (i.e. the BCH code)
-    return value;
-  }
-
-  // Make bit vector of type information. On success, store the result in "bits" and return true.
-  // Encode error correction level and mask pattern. See 8.9 of
-  // JISX0510:2004 (p.45) for details.
-  public static void makeTypeInfoBits(ErrorCorrectionLevel ecLevel, int maskPattern, BitArray bits)
-      throws WriterException {
-    if (!QRCode.isValidMaskPattern(maskPattern)) {
-      throw new WriterException("Invalid mask pattern");
-    }
-    int typeInfo = (ecLevel.getBits() << 3) | maskPattern;
-    bits.appendBits(typeInfo, 5);
-
-    int bchCode = calculateBCHCode(typeInfo, TYPE_INFO_POLY);
-    bits.appendBits(bchCode, 10);
-
-    BitArray maskBits = new BitArray();
-    maskBits.appendBits(TYPE_INFO_MASK_PATTERN, 15);
-    bits.xor(maskBits);
-
-    if (bits.getSize() != 15) {  // Just in case.
-      throw new WriterException("should not happen but we got: " + bits.getSize());
-    }
-  }
-
-  // Make bit vector of version information. On success, store the result in "bits" and return true.
-  // See 8.10 of JISX0510:2004 (p.45) for details.
-  public static void makeVersionInfoBits(int version, BitArray bits) throws WriterException {
-    bits.appendBits(version, 6);
-    int bchCode = calculateBCHCode(version, VERSION_INFO_POLY);
-    bits.appendBits(bchCode, 12);
-
-    if (bits.getSize() != 18) {  // Just in case.
-      throw new WriterException("should not happen but we got: " + bits.getSize());
-    }
-  }
-
-  // Check if "value" is empty.
-  private static boolean isEmpty(int value) {
-    return value == -1;
-  }
-
-  // Check if "value" is valid.
-  private static boolean isValidValue(int value) {
-    return value == -1 ||  // Empty.
-        value == 0 ||  // Light (white).
-        value == 1;  // Dark (black).
-  }
-
-  private static void embedTimingPatterns(ByteMatrix matrix) throws WriterException {
-    // -8 is for skipping position detection patterns (size 7), and two horizontal/vertical
-    // separation patterns (size 1). Thus, 8 = 7 + 1.
-    for (int i = 8; i < matrix.getWidth() - 8; ++i) {
-      int bit = (i + 1) % 2;
-      // Horizontal line.
-      if (!isValidValue(matrix.get(i, 6))) {
-        throw new WriterException();
-      }
-      if (isEmpty(matrix.get(i, 6))) {
-        matrix.set(i, 6, bit);
-      }
-      // Vertical line.
-      if (!isValidValue(matrix.get(6, i))) {
-        throw new WriterException();
-      }
-      if (isEmpty(matrix.get(6, i))) {
-        matrix.set(6, i, bit);
-      }
-    }
-  }
-
-  // Embed the lonely dark dot at left bottom corner. JISX0510:2004 (p.46)
-  private static void embedDarkDotAtLeftBottomCorner(ByteMatrix matrix) throws WriterException {
-    if (matrix.get(8, matrix.getHeight() - 8) == 0) {
-      throw new WriterException();
-    }
-    matrix.set(8, matrix.getHeight() - 8, 1);
-  }
-
-  private static void embedHorizontalSeparationPattern(int xStart, int yStart,
-      ByteMatrix matrix) throws WriterException {
-    // We know the width and height.
-    if (HORIZONTAL_SEPARATION_PATTERN[0].length != 8 || HORIZONTAL_SEPARATION_PATTERN.length != 1) {
-      throw new WriterException("Bad horizontal separation pattern");
-    }
-    for (int x = 0; x < 8; ++x) {
-      if (!isEmpty(matrix.get(xStart + x, yStart))) {
-        throw new WriterException();
-      }
-      matrix.set(xStart + x, yStart, HORIZONTAL_SEPARATION_PATTERN[0][x]);
-    }
-  }
-
-  private static void embedVerticalSeparationPattern(int xStart, int yStart,
-      ByteMatrix matrix) throws WriterException {
-    // We know the width and height.
-    if (VERTICAL_SEPARATION_PATTERN[0].length != 1 || VERTICAL_SEPARATION_PATTERN.length != 7) {
-      throw new WriterException("Bad vertical separation pattern");
-    }
-    for (int y = 0; y < 7; ++y) {
-      if (!isEmpty(matrix.get(xStart, yStart + y))) {
-        throw new WriterException();
-      }
-      matrix.set(xStart, yStart + y, VERTICAL_SEPARATION_PATTERN[y][0]);
-    }
-  }
-
-  // Note that we cannot unify the function with embedPositionDetectionPattern() despite they are
-  // almost identical, since we cannot write a function that takes 2D arrays in different sizes in
-  // C/C++. We should live with the fact.
-  private static void embedPositionAdjustmentPattern(int xStart, int yStart,
-      ByteMatrix matrix) throws WriterException {
-    // We know the width and height.
-    if (POSITION_ADJUSTMENT_PATTERN[0].length != 5 || POSITION_ADJUSTMENT_PATTERN.length != 5) {
-      throw new WriterException("Bad position adjustment");
-    }
-    for (int y = 0; y < 5; ++y) {
-      for (int x = 0; x < 5; ++x) {
-        if (!isEmpty(matrix.get(xStart + x, yStart + y))) {
-          throw new WriterException();
-        }
-        matrix.set(xStart + x, yStart + y, POSITION_ADJUSTMENT_PATTERN[y][x]);
-      }
-    }
-  }
-
-  private static void embedPositionDetectionPattern(int xStart, int yStart,
-      ByteMatrix matrix) throws WriterException {
-    // We know the width and height.
-    if (POSITION_DETECTION_PATTERN[0].length != 7 || POSITION_DETECTION_PATTERN.length != 7) {
-      throw new WriterException("Bad position detection pattern");
-    }
-    for (int y = 0; y < 7; ++y) {
-      for (int x = 0; x < 7; ++x) {
-        if (!isEmpty(matrix.get(xStart + x, yStart + y))) {
-          throw new WriterException();
-        }
-        matrix.set(xStart + x, yStart + y, POSITION_DETECTION_PATTERN[y][x]);
-      }
-    }
-  }
-
-  // Embed position detection patterns and surrounding vertical/horizontal separators.
-  private static void embedPositionDetectionPatternsAndSeparators(ByteMatrix matrix) throws WriterException {
-    // Embed three big squares at corners.
-    int pdpWidth = POSITION_DETECTION_PATTERN[0].length;
-    // Left top corner.
-    embedPositionDetectionPattern(0, 0, matrix);
-    // Right top corner.
-    embedPositionDetectionPattern(matrix.getWidth() - pdpWidth, 0, matrix);
-    // Left bottom corner.
-    embedPositionDetectionPattern(0, matrix.getWidth() - pdpWidth, matrix);
-
-    // Embed horizontal separation patterns around the squares.
-    int hspWidth = HORIZONTAL_SEPARATION_PATTERN[0].length;
-    // Left top corner.
-    embedHorizontalSeparationPattern(0, hspWidth - 1, matrix);
-    // Right top corner.
-    embedHorizontalSeparationPattern(matrix.getWidth() - hspWidth,
-        hspWidth - 1, matrix);
-    // Left bottom corner.
-    embedHorizontalSeparationPattern(0, matrix.getWidth() - hspWidth, matrix);
-
-    // Embed vertical separation patterns around the squares.
-    int vspSize = VERTICAL_SEPARATION_PATTERN.length;
-    // Left top corner.
-    embedVerticalSeparationPattern(vspSize, 0, matrix);
-    // Right top corner.
-    embedVerticalSeparationPattern(matrix.getHeight() - vspSize - 1, 0, matrix);
-    // Left bottom corner.
-    embedVerticalSeparationPattern(vspSize, matrix.getHeight() - vspSize,
-        matrix);
-  }
-
-  // Embed position adjustment patterns if need be.
-  private static void maybeEmbedPositionAdjustmentPatterns(int version, ByteMatrix matrix)
-      throws WriterException {
-    if (version < 2) {  // The patterns appear if version >= 2
-      return;
-    }
-    int index = version - 1;
-    int[] coordinates = POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE[index];
-    int numCoordinates = POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE[index].length;
-    for (int i = 0; i < numCoordinates; ++i) {
-      for (int j = 0; j < numCoordinates; ++j) {
-        int y = coordinates[i];
-        int x = coordinates[j];
-        if (x == -1 || y == -1) {
-          continue;
-        }
-        // If the cell is unset, we embed the position adjustment pattern here.
-        if (isEmpty(matrix.get(x, y))) {
-          // -2 is necessary since the x/y coordinates point to the center of the pattern, not the
-          // left top corner.
-          embedPositionAdjustmentPattern(x - 2, y - 2, matrix);
-        }
-      }
-    }
-  }
-
-}