Method align

src/bin/zip/ZipMaker.java:384–391

(int alignment, byte[] extra, long extraDataOffset)

    }

    private byte[] align(int alignment, byte[] extra, long extraDataOffset) throws IOException {
        if (isAligned(extraDataOffset + extra.length, alignment)) {
            return extra;
        }
        extra = ExtraDataRecord.trim(extra);
        int padding = getAlignedPadding(extraDataOffset + extra.length, alignment);
        return Arrays.copyOf(extra, extra.length + padding);
    }

    private static boolean isAligned(long pos, int alignTo) {
        return (pos % alignTo) == 0;