private boolean stranger(String myName) {
// tty.println("=+= " + (myName.getBytes()[0])+" =" );
// tty.println("=+= " + Character.isISOControl(myName.charAt(0)));
if (Character.isISOControl(myName.charAt(0))) myName = "QUIT";
if (myName.equals("QUIT")) {
writeLine("! Thank you for coming!");
}
if (myName == null || myName.equals("QUIT")) {
tty.println(" --- from " + remoteAddr + " at " + now.toString());
return true;
} // "QUIT" is not allowed as a nick name
if (myName.equals(SECRET_NAME)) {
tty.println("GiGi from " + remoteAddr + " at " + now.toString());
doList();
return true;
}
return false; // a usual user name
}
public void run() {
now = new Date();
try {
remoteAddr = mySock.getInetAddress().getHostAddress();
// 然後取得InputStream並包成 BufferedReader 方便 readLine()
in = new BufferedReader(new InputStreamReader(mySock.getInputStream()));
// 再取得 OutputStream 並包成 PrintWriter
out = new PrintWriter(new OutputStreamWriter(mySock.getOutputStream()), true);
// 接著, 要求連線者輸入 nickname
myName = askNickname();
// 若輸入怪異的nickname例如Control_C 則終止連線
if (stranger(myName)) {
close();
return;
}
// 廣播給所有聊天室的人
doBcast("CHAT *** " + myName + " is coming in ***");
// 並在 console 上顯示 (tty == System.out)
tty.println(myName + "@" + remoteAddr + " enters the Chat Room " + now.toString());
// writeLine(msg) 會把 msg 寫到目前連線者終端機
writeLine("CHAT *** Welcome 歡迎 " + myName + " 進入聊天室 ***");
writeLine("You can type '/help' for help");
String cmd, msg;
int mode;
FOO:
while ((cmd = in.readLine()) != null) {
StringTokenizer stkn = new StringTokenizer(cmd, " \t");
String command = " ";
if (stkn.countTokens() >= 1) command = stkn.nextToken();
msg = " ";
if (stkn.hasMoreTokens()) msg = stkn.nextToken("\n");
mode = parseCommand(command.toUpperCase());
switch (mode) {
case CMD_MSG:
doMsg(msg);
break;
case CMD_LIST:
doList();
break;
case CMD_QUERY:
doQuery(cmd.substring(6));
break;
case CMD_NICK:
doNick(msg);
break;
case CMD_HELP:
doHelp();
break;
case CMD_QUIT:
now = new Date();
tty.println(myName + " said BYE at " + now.toString());
doBcast("[" + myName + " saied Bye Bye! ]");
break FOO;
case CMD_DATA:
doBcast("[" + myName + "] " + cmd);
tty.println(myName + ": " + cmd);
break;
} // switch
} // while FOO:
} catch (Exception e) {
tty.println(e.toString());
}
now = new Date();
tty.println(now.toString() + " one thread stop");
close();
}
