//---------------------------输入流读取线程-----------------------------
class printInputThread extends Thread {
    public void run() {
        
        //只有该线程读取该流.
        InputStream in = CommandExecutor.in;
        StringBuilder inputStr = new StringBuilder();
        char ch;

        try {
            while (!isInterrupted()) {
                //可读取的字节数
                int canReadCount = in.available();
                System.out.println("read available:"+canReadCount);
                if(canReadCount>0){
                    for(int i=0;i<canReadCount;i++){
                        inputStr.append((char)in.read());
                    }
                    // 追加到结果区域
                    System.out.println("read available:"+inputStr.toString());
                    Start.mainFrame.appendResultText(inputStr.toString());
                    inputStr.delete(0, inputStr.length());
                }
                //读取一个字节，无数据则阻塞
                ch = (char)in.read();
                inputStr.append(ch);
                System.out.println("read one:"+ch);
            }
        
        } catch (IOException e) {
            //执行exit命令时，连接会被断开，报SocketException:Connection reset
            //点“断开连接”按钮，中断该线程时，执行in.read()时，有可能流已经被关闭，报socket closed
            //点“断开连接”按钮，中断该线程时，in.read()方法被中断时，抛出InterruptedIOException异常
            //如果正在执行in.available()，而流已经被关闭，报java.io.IOException: Stream closed
            //不能保证该线程的中断会在tc.disconnect()之前执行，即不能保证它在流关闭前被中断。
            
            //干脆，SocketException也不抓了，也不详细区分异常类型，一律作为断开连接处理。
            
            //断开tc的连接，切换界面状态
            Start.mainFrame.disconnect();

            //输出LOG以备查看
            e.printStackTrace();
        }
        
        System.out.println("printInputThread ended.");
    }
}