public final int read()

in src/main/java/com/fazecast/jSerialComm/SerialPort.java [2288:2305]

• 15 lines of code
• 8 McCabe index (conditional complexity)

		public final int read(byte[] b, int off, int len) throws NullPointerException, IndexOutOfBoundsException, SerialPortIOException, SerialPortTimeoutException
		{
			// Perform error checking
			if (b == null)
				throw new NullPointerException("A null pointer was passed in for the read buffer.");
			if ((len < 0) || (off < 0) || (len > (b.length - off)))
				throw new IndexOutOfBoundsException("The specified read offset plus length extends past the end of the specified buffer.");
			if (portHandle == 0)
				throw new SerialPortIOException("This port appears to have been shutdown or disconnected.");
			if ((b.length == 0) || (len == 0))
				return 0;

			// Read from the serial port
			int numRead = readBytes(b, len, off);
			if ((numRead == 0) && !timeoutExceptionsSuppressed)
				throw new SerialPortTimeoutException("The read operation timed out before any data was returned.");
			return numRead;
		}