public ByteOrderMark getBOM()

in src/main/java/org/apache/commons/io/input/BOMInputStream.java [298:323]

• 23 lines of code
• 7 McCabe index (conditional complexity)

    public ByteOrderMark getBOM() throws IOException {
        if (firstBytes == null) {
            fbLength = 0;
            // BOMs are sorted from longest to shortest
            final int maxBomSize = boms.get(0).length();
            firstBytes = new int[maxBomSize];
            // Read first maxBomSize bytes
            for (int i = 0; i < firstBytes.length; i++) {
                firstBytes[i] = in.read();
                fbLength++;
                if (firstBytes[i] < 0) {
                    break;
                }
            }
            // match BOM in firstBytes
            byteOrderMark = find();
            if (byteOrderMark != null && !include) {
                if (byteOrderMark.length() < firstBytes.length) {
                    fbIndex = byteOrderMark.length();
                } else {
                    fbLength = 0;
                }
            }
        }
        return byteOrderMark;
    }