package sms;

import gnu.io.SerialPortEvent;
import gnu.io.SerialPortEventListener;

import java.io.IOException;
import java.io.InputStream;


/*
 * 短信發送AT指令可能有返回值，本事件監聽器專門監聽返回值
 * 但是由于本CDMA正常工作時沒有返回值，僅在出現狀態錯誤的時候出現，因此本監聽器可以看做是用來
 * 捕獲系統錯誤的類
 */
public class SMSReturnEventListener implements SerialPortEventListener {

	private InputStream inputStream;

	@Override
	public void serialEvent(SerialPortEvent event) {
		
		/*now I don't want to insert some programme into this block ,because
		 * I can't be sure that the super block would work well
		 */
		InputStream inputStream=null;
		
		switch (event.getEventType()) {
		   case SerialPortEvent.BI:
		   case SerialPortEvent.OE:
		   case SerialPortEvent.FE:
		   case SerialPortEvent.PE:
		   case SerialPortEvent.CD:
		   case SerialPortEvent.CTS:
		   case SerialPortEvent.DSR:
		   case SerialPortEvent.RI:
		   case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
		    break;
		   case SerialPortEvent.DATA_AVAILABLE://當有可用數據時讀取數據,并且給串口返回數據
			   {System.out.println("得到了一些返回值");
		    byte[] readBuffer = new byte[1024];
		    try {
		     while (inputStream.available() > 0) {//下一次可以不受阻塞而讀取的字節數
		      int numBytes = inputStream.read(readBuffer);//從輸入流中讀取一定數量的字節，并將其存儲在緩沖區數組readBuffer中。以整數形式返回實際讀取的字節數。
		     }
//		     System.out.println(numBytes);//
		    } catch (IOException e){
		    }finally{
		    	try {
					inputStream.close();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
		    }}
		    break;
		   }
	}
	
	public void setInputStream(InputStream inputStream){
		this.inputStream=inputStream;
	}

}