public Base64()

in src/main/java/org/apache/commons/codec/binary/Base64.java [586:613]
26 lines of code
6 McCabe index (conditional complexity)

    public Base64(final int lineLength, final byte[] lineSeparator, final boolean urlSafe,
                  final CodecPolicy decodingPolicy) {
        super(BYTES_PER_UNENCODED_BLOCK, BYTES_PER_ENCODED_BLOCK,
                lineLength,
                lineSeparator == null ? 0 : lineSeparator.length,
                PAD_DEFAULT,
                decodingPolicy);
        // TODO could be simplified if there is no requirement to reject invalid line sep when length <=0
        // @see test case Base64Test.testConstructors()
        if (lineSeparator != null) {
            if (containsAlphabetOrPad(lineSeparator)) {
                final String sep = StringUtils.newStringUtf8(lineSeparator);
                throw new IllegalArgumentException("lineSeparator must not contain base64 characters: [" + sep + "]");
            }
            if (lineLength > 0){ // null line-sep forces no chunking rather than throwing IAE
                this.encodeSize = BYTES_PER_ENCODED_BLOCK + lineSeparator.length;
                this.lineSeparator = lineSeparator.clone();
            } else {
                this.encodeSize = BYTES_PER_ENCODED_BLOCK;
                this.lineSeparator = null;
            }
        } else {
            this.encodeSize = BYTES_PER_ENCODED_BLOCK;
            this.lineSeparator = null;
        }
        this.decodeSize = this.encodeSize - 1;
        this.encodeTable = urlSafe ? URL_SAFE_ENCODE_TABLE : STANDARD_ENCODE_TABLE;
    }