CODEWITHSUNDEEP
java
Ercksen
Ercksen

Reputation: 669

Getting the output stream of "cmd.exe" in Java

I wanted to create something like a remote control for the command line in Windows.

For this I am using a scanner, but...

The problem is, when I read the whole line with nextLine() from the stream, the prompt will be missing (becouse is is printed, but not in a line) - and when I read the next word with next(), the line break is missing and you will lose the overview. However, some information is even missing.

package com;

import java.io.IOException;
import java.util.Scanner;

public class StdinCmd extends Thread {
    public void run() {
        try {
            execute();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    public void execute() throws IOException {
        Scanner reader = new Scanner(MainClient.getProcess().getInputStream()); // <- getting the stream
        StdoutSocket stdoutSocket = new StdoutSocket();
        while (true) {
            while (reader.hasNext()) {
                stdoutSocket.executeNext(reader.next()); // <- send it to the socket (the controller). This is what will be displayed at the end.
            }
        }
    }
}

I attached a screenshot of how it should look like, and how it looks at the end:

http://www.mediafire.com/?jma31ezg8ansfal

I hope you can help me and I gave you enough information!

Upvotes: 1

Views: 1667

Answers (2)

Max
Max

Reputation: 801

Personally I really don't like scanner so much. If you want to read input line's from a user and send it through a socket.. Who not then just use a BufferedReader with System.in? Read a line and send it through the socket.

BufferedReader br = new BUfferedReader(new InputStreamReader(System.in));
String line = null;
while((line = br.readLine()) != null){
    OutSocket.send(line); // or how you send it..
}

~Foorack

Upvotes: 1

MadProgrammer
MadProgrammer

Reputation: 347204

Don't use Scanner or BufferedReader, but instead read directly from the InputStream...

InputStream is = null;
try {
    is = MainClient.getProcess().getInputStream();
    int in = -1;
    while ((in = is.read()) != -1) {
        System.out.print(((char)in));
    }
} catch (IOException exp) {
    exp.printStackTrace();
} finally {
    try {
        is.close();
    } catch (Exception exp) {
    }
}

Upvotes: 1

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