private int getAmountToReadFromByteBuffer()

in src/main/java/software/amazon/encryption/s3/internal/CipherSubscriber.java [102:117]

• 12 lines of code
• 3 McCabe index (conditional complexity)

    private int getAmountToReadFromByteBuffer(ByteBuffer byteBuffer) {
        // If content length is null, we should include everything in the cipher because the stream is essentially
        // unbounded.
        if (contentLength == null) {
            return byteBuffer.remaining();
        }

        long amountReadSoFar = contentRead.getAndAdd(byteBuffer.remaining());
        long amountRemaining = Math.max(0, contentLength - amountReadSoFar);

        if (amountRemaining > byteBuffer.remaining()) {
            return byteBuffer.remaining();
        } else {
            return Math.toIntExact(amountRemaining);
        }
    }