public int read()

in src/main/java/org/apache/commons/crypto/stream/CryptoInputStream.java [500:530]

• 26 lines of code
• 6 McCabe index (conditional complexity)

    public int read(final byte[] array, final int off, final int len) throws IOException {
        checkStream();
        Objects.requireNonNull(array, "array");
        if (off < 0 || len < 0 || len > array.length - off) {
            throw new IndexOutOfBoundsException();
        }
        if (len == 0) {
            return 0;
        }

        final int remaining = outBuffer.remaining();
        if (remaining > 0) {
            // Satisfy the read with the existing data
            final int n = Math.min(len, remaining);
            outBuffer.get(array, off, n);
            return n;
        }
        // No data in the out buffer, try read new data and decrypt it
        // we loop for new data
        int nd = 0;
        while (nd == 0) {
            nd = decryptMore();
        }
        if (nd < 0) {
            return nd;
        }

        final int n = Math.min(len, outBuffer.remaining());
        outBuffer.get(array, off, n);
        return n;
    }