framework/src/main/java/org/apache/felix/framework/util/Util.java [645:703]:
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    public static void encode(InputStream in, OutputStream out, int len)
        throws IOException
    {

        // Check that length is a multiple of 4 bytes
        if (len % 4 != 0)
        {
            throw new IllegalArgumentException("Length must be a multiple of 4");
        }

        // Read input stream until end of file
        int bits = 0;
        int nbits = 0;
        int nbytes = 0;
        int b;

        while ((b = in.read()) != -1)
        {
            bits = (bits << 8) | b;
            nbits += 8;
            while (nbits >= 6)
            {
                nbits -= 6;
                out.write(encTab[0x3f & (bits >> nbits)]);
                nbytes++;
                // New line
                if (len != 0 && nbytes >= len)
                {
                    out.write(0x0d);
                    out.write(0x0a);
                    nbytes -= len;
                }
            }
        }

        switch (nbits)
        {
            case 2:
                out.write(encTab[0x3f & (bits << 4)]);
                out.write(0x3d); // 0x3d = '='
                out.write(0x3d);
                break;
            case 4:
                out.write(encTab[0x3f & (bits << 2)]);
                out.write(0x3d);
                break;
        }

        if (len != 0)
        {
            if (nbytes != 0)
            {
                out.write(0x0d);
                out.write(0x0a);
            }
            out.write(0x0d);
            out.write(0x0a);
        }
    }
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bundlerepository/src/main/java/org/apache/felix/bundlerepository/impl/Base64Encoder.java [72:130]:
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    public static void encode(InputStream in, OutputStream out, int len)
        throws IOException
    {

        // Check that length is a multiple of 4 bytes
        if (len % 4 != 0)
        {
            throw new IllegalArgumentException("Length must be a multiple of 4");
        }

        // Read input stream until end of file
        int bits = 0;
        int nbits = 0;
        int nbytes = 0;
        int b;

        while ((b = in.read()) != -1)
        {
            bits = (bits << 8) | b;
            nbits += 8;
            while (nbits >= 6)
            {
                nbits -= 6;
                out.write(encTab[0x3f & (bits >> nbits)]);
                nbytes++;
                // New line
                if (len != 0 && nbytes >= len)
                {
                    out.write(0x0d);
                    out.write(0x0a);
                    nbytes -= len;
                }
            }
        }

        switch (nbits)
        {
            case 2:
                out.write(encTab[0x3f & (bits << 4)]);
                out.write(0x3d); // 0x3d = '='
                out.write(0x3d);
                break;
            case 4:
                out.write(encTab[0x3f & (bits << 2)]);
                out.write(0x3d);
                break;
        }

        if (len != 0)
        {
            if (nbytes != 0)
            {
                out.write(0x0d);
                out.write(0x0a);
            }
            out.write(0x0d);
            out.write(0x0a);
        }
    }
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connect/src/main/java/org/apache/felix/connect/felix/framework/util/Util.java [335:393]:
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    public static void encode(InputStream in, OutputStream out, int len)
            throws IOException
    {

        // Check that length is a multiple of 4 bytes
        if (len % 4 != 0)
        {
            throw new IllegalArgumentException("Length must be a multiple of 4");
        }

        // Read input stream until end of file
        int bits = 0;
        int nbits = 0;
        int nbytes = 0;
        int b;

        while ((b = in.read()) != -1)
        {
            bits = (bits << 8) | b;
            nbits += 8;
            while (nbits >= 6)
            {
                nbits -= 6;
                out.write(encTab[0x3f & (bits >> nbits)]);
                nbytes++;
                // New line
                if (len != 0 && nbytes >= len)
                {
                    out.write(0x0d);
                    out.write(0x0a);
                    nbytes -= len;
                }
            }
        }

        switch (nbits)
        {
        case 2:
            out.write(encTab[0x3f & (bits << 4)]);
            out.write(0x3d); // 0x3d = '='
            out.write(0x3d);
            break;
        case 4:
            out.write(encTab[0x3f & (bits << 2)]);
            out.write(0x3d);
            break;
        }

        if (len != 0)
        {
            if (nbytes != 0)
            {
                out.write(0x0d);
                out.write(0x0a);
            }
            out.write(0x0d);
            out.write(0x0a);
        }
    }
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