Apache Commons logo Commons Codec
Apache Commons Codec ™
  • Last Published: 23 Jan 2026
  • |
  • Version: 1.21.0

CPD Results

The following document contains the results of PMD's CPD 7.20.0.

Duplications

File Line
org/apache/commons/codec/language/Caverphone1.java 70
org/apache/commons/codec/language/Caverphone2.java 73
txt = txt.replaceAll("^enough", "enou2f");
        txt = txt.replaceAll("^gn", "2n");

        // End
        txt = txt.replaceAll("mb$", "m2");

        // 4. Handle replacements
        txt = txt.replace("cq", "2q");
        txt = txt.replace("ci", "si");
        txt = txt.replace("ce", "se");
        txt = txt.replace("cy", "sy");
        txt = txt.replace("tch", "2ch");
        txt = txt.replace("c", "k");
        txt = txt.replace("q", "k");
        txt = txt.replace("x", "k");
        txt = txt.replace("v", "f");
        txt = txt.replace("dg", "2g");
        txt = txt.replace("tio", "sio");
        txt = txt.replace("tia", "sia");
        txt = txt.replace("d", "t");
        txt = txt.replace("ph", "fh");
        txt = txt.replace("b", "p");
        txt = txt.replace("sh", "s2");
        txt = txt.replace("z", "s");
        txt = txt.replaceAll("^[aeiou]", "A");
        // 3 is a temporary placeholder marking a vowel
        txt = txt.replaceAll("[aeiou]", "3");
        txt = txt.replace("3gh3", "3kh3");
File Line
org/apache/commons/codec/binary/Base16.java 114
org/apache/commons/codec/binary/Base32.java 187
private static final byte[] UPPER_CASE_DECODE_TABLE = {
            //  0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
             0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, // 30-3f 0-9
            -1, 10, 11, 12, 13, 14, 15                                      // 40-46 A-F
File Line
org/apache/commons/codec/binary/Base16.java 114
org/apache/commons/codec/binary/Base16.java 135
org/apache/commons/codec/binary/Base32.java 187
private static final byte[] UPPER_CASE_DECODE_TABLE = {
            //  0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
             0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, // 30-3f 0-9
            -1, 10, 11, 12, 13, 14, 15                                      // 40-46 A-F
File Line
org/apache/commons/codec/binary/Base64.java 260
org/apache/commons/codec/binary/Base64.java 297
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, 62, -1, 63, // 20-2f + - /
            52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, // 30-3f 0-9
            -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, // 40-4f A-O
            15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, 63, // 50-5f P-Z _
            -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, // 60-6f a-o
            41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51                      // 70-7a p-z
    };

    /**
     * This array is a lookup table that translates Unicode characters drawn from the "Base64 Alphabet" (as specified in
     * <a href="https://www.ietf.org/rfc/rfc2045#:~:text=Table%201%3A%20The%20Base64%20Alphabet">RFC 2045 Table 1: The Base64 Alphabet</a>) into their 6-bit
     * positive integer equivalents. Characters that are not in the Base64 alphabet but fall within the bounds of the array are translated to -1. This decoding
     * table handles only the standard base64 characters, such as '+' and '/'. The "url-safe" characters such as '-' and '_' are not supported by the table.
     */
    private static final byte[] STANDARD_DECODE_TABLE = {
File Line
org/apache/commons/codec/binary/Base16.java 114
org/apache/commons/codec/binary/Base32.java 154
org/apache/commons/codec/binary/Base32.java 187
private static final byte[] UPPER_CASE_DECODE_TABLE = {
            //  0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 116
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 137
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 116
org/apache/commons/codec/binary/Base16.java 137
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 189
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 137
org/apache/commons/codec/binary/Base32.java 189
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base32.java 154
org/apache/commons/codec/binary/Base64.java 256
private static final byte[] DECODE_TABLE = {
         //  0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 114
org/apache/commons/codec/binary/Base64.java 293
private static final byte[] UPPER_CASE_DECODE_TABLE = {
            //  0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base64.java 276
org/apache/commons/codec/binary/Base64.java 295
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, // 20-2f + /
File Line
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 295
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, 62, -1, 63, // 20-2f + - /
File Line
org/apache/commons/codec/binary/Base16.java 116
org/apache/commons/codec/binary/Base64.java 295
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 137
org/apache/commons/codec/binary/Base64.java 295
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 114
org/apache/commons/codec/binary/Base64.java 256
org/apache/commons/codec/binary/Base64.java 274
org/apache/commons/codec/binary/Base64.java 293
private static final byte[] UPPER_CASE_DECODE_TABLE = {
            //  0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 295
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, 62, -1, 63, // 20-2f + - /
File Line
org/apache/commons/codec/binary/Base16.java 137
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 276
org/apache/commons/codec/binary/Base64.java 295
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 276
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base64.java 221
org/apache/commons/codec/binary/Base64.java 234
private static final byte[] STANDARD_ENCODE_TABLE = {
            'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
            'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
            'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
            'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
            '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/'
File Line
org/apache/commons/codec/digest/MurmurHash3.java 570
org/apache/commons/codec/digest/MurmurHash3.java 1071
case 7:
            k1 ^= ((long) data[index + 6] & 0xff) << 48;
            // falls-through
        case 6:
            k1 ^= ((long) data[index + 5] & 0xff) << 40;
            // falls-through
        case 5:
            k1 ^= ((long) data[index + 4] & 0xff) << 32;
            // falls-through
        case 4:
            k1 ^= ((long) data[index + 3] & 0xff) << 24;
            // falls-through
        case 3:
            k1 ^= ((long) data[index + 2] & 0xff) << 16;
            // falls-through
        case 2:
            k1 ^= ((long) data[index + 1] & 0xff) << 8;
            // falls-through
        case 1:
            k1 ^= data[index] & 0xff;
File Line
org/apache/commons/codec/language/Caverphone1.java 96
org/apache/commons/codec/language/Caverphone2.java 103
txt = txt.replaceAll("[aeiou]", "3");
        txt = txt.replace("3gh3", "3kh3");
        txt = txt.replace("gh", "22");
        txt = txt.replace("g", "k");
        txt = txt.replaceAll("s+", "S");
        txt = txt.replaceAll("t+", "T");
        txt = txt.replaceAll("p+", "P");
        txt = txt.replaceAll("k+", "K");
        txt = txt.replaceAll("f+", "F");
        txt = txt.replaceAll("m+", "M");
        txt = txt.replaceAll("n+", "N");
        txt = txt.replace("w3", "W3");
        txt = txt.replace("wy", "Wy"); // 1.0 only
File Line
org/apache/commons/codec/binary/Base16.java 116
org/apache/commons/codec/binary/Base16.java 140
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 276
org/apache/commons/codec/binary/Base64.java 276
org/apache/commons/codec/binary/Base64.java 276
org/apache/commons/codec/binary/Base64.java 276
org/apache/commons/codec/binary/Base64.java 295
org/apache/commons/codec/binary/Base64.java 295
org/apache/commons/codec/binary/Base64.java 295
org/apache/commons/codec/binary/Base64.java 295
org/apache/commons/codec/binary/Base64.java 295
org/apache/commons/codec/binary/Base64.java 295
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 137
org/apache/commons/codec/binary/Base16.java 140
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base16.java 137
org/apache/commons/codec/binary/Base16.java 140
org/apache/commons/codec/binary/Base32.java 156
org/apache/commons/codec/binary/Base32.java 189
org/apache/commons/codec/binary/Base64.java 258
org/apache/commons/codec/binary/Base64.java 276
org/apache/commons/codec/binary/Base64.java 295
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 00-0f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 10-1f
            -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, // 20-2f
File Line
org/apache/commons/codec/binary/Base64.java 260
org/apache/commons/codec/binary/Base64.java 278
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, 62, -1, 63, // 20-2f + - /
            52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, // 30-3f 0-9
            -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, // 40-4f A-O
            15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, 63, // 50-5f P-Z _
File Line
org/apache/commons/codec/binary/Base32.java 685
org/apache/commons/codec/binary/Base64.java 1101
break;
            default:
                throw new IllegalStateException("Impossible modulus " + context.modulus);
            }
            context.currentLinePos += context.pos - savedPos; // keep track of current line position
            // if currentPos == 0 we are at the start of a line, so don't add CRLF
            if (lineLength > 0 && context.currentLinePos > 0) { // add chunk separator if required
                System.arraycopy(lineSeparator, 0, buffer, context.pos, lineSeparator.length);
                context.pos += lineSeparator.length;
            }
        } else {
            for (int i = 0; i < inAvail; i++) {
                final byte[] buffer = ensureBufferSize(encodeSize, context);
                context.modulus = (context.modulus + 1) % BYTES_PER_UNENCODED_BLOCK;
                int b = input[inPos++];
File Line
org/apache/commons/codec/binary/Base64.java 278
org/apache/commons/codec/binary/Base64.java 297
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, // 20-2f + /
            52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, // 30-3f 0-9
            -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, // 40-4f A-O
            15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, // 50-5f P-Z
File Line
org/apache/commons/codec/digest/MurmurHash3.java 712
org/apache/commons/codec/digest/MurmurHash3.java 912
public static int hash32(final byte[] data, final int offset, final int length, final int seed) {
        int hash = seed;
        final int nblocks = length >> 2;
        // body
        for (int i = 0; i < nblocks; i++) {
            final int index = offset + (i << 2);
            final int k = MurmurHash.getLittleEndianInt(data, index);
            hash = mix32(k, hash);
        }
        // tail
        // Note: This fails to apply masking using 0xff to the 3 remaining bytes.
        final int index = offset + (nblocks << 2);
        int k1 = 0;
        switch (offset + length - index) {
        case 3:
            k1 ^= data[index + 2] << 16;

Copyright © 2002-2026 The Apache Software Foundation. All Rights Reserved.

Apache Commons, Apache Commons Codec, Apache, the Apache logo, and the Apache Commons project logos are trademarks of The Apache Software Foundation. All other marks mentioned may be trademarks or registered trademarks of their respective owners.