public boolean peek()

in src/main/java/org/apache/commons/io/input/buffer/CircularByteBuffer.java [185:206]

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

    public boolean peek(final byte[] sourceBuffer, final int offset, final int length) {
        Objects.requireNonNull(sourceBuffer, "Buffer");
        if (offset < 0 || offset >= sourceBuffer.length) {
            throw new IllegalArgumentException("Illegal offset: " + offset);
        }
        if (length < 0 || length > buffer.length) {
            throw new IllegalArgumentException("Illegal length: " + length);
        }
        if (length < currentNumberOfBytes) {
            return false;
        }
        int localOffset = startOffset;
        for (int i = 0; i < length; i++) {
            if (buffer[localOffset] != sourceBuffer[i + offset]) {
                return false;
            }
            if (++localOffset == buffer.length) {
                localOffset = 0;
            }
        }
        return true;
    }