Java Shell Command runCommand(String[] args)

Description

run Command

License

Open Source License

Declaration

public static int runCommand(String[] args) throws IOException 

Method Source Code

//package com.java2s;
/* ***** BEGIN LICENSE BLOCK *****
 *
 * This file is part of Weave./* w  ww .  jav  a  2  s .c o m*/
 *
 * The Initial Developer of Weave is the Institute for Visualization
 * and Perception Research at the University of Massachusetts Lowell.
 * Portions created by the Initial Developer are Copyright (C) 2008-2015
 * the Initial Developer. All Rights Reserved.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
 * You can obtain one at http://mozilla.org/MPL/2.0/.
 * 
 * ***** END LICENSE BLOCK ***** */

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static int runCommand(String[] args) throws IOException {
        return runCommand(args, null, null, false);
    }

    public static int runCommand(String[] args, boolean debug)
            throws IOException {
        return runCommand(args, null, null, debug);
    }

    public static int runCommand(String[] args, String[] envp, File dir)
            throws IOException {
        return runCommand(args, envp, dir, false);
    }

    public static int runCommand(String[] args, String[] envp, File dir,
            boolean debug) throws IOException {
        Runtime run = Runtime.getRuntime();
        Process proc = null;
        proc = run.exec(args, envp, dir);
        BufferedReader stdout = new BufferedReader(new InputStreamReader(
                proc.getInputStream()));
        BufferedReader stderr = new BufferedReader(new InputStreamReader(
                proc.getErrorStream()));
        while (true) {
            String line = null;
            try {
                // check both streams for new data
                if (stdout.ready()) {
                    if (debug)
                        line = stdout.readLine();
                    else
                        stdout.skip(Long.MAX_VALUE);
                } else if (stderr.ready()) {
                    if (debug)
                        line = stderr.readLine();
                    else
                        stderr.skip(Long.MAX_VALUE);
                }

                // print out data from stream
                if (line != null) {
                    System.out.println(line);
                    continue;
                }
            } catch (IOException ioe) {
                // stream error, get the return value of the process and return from this function
                try {
                    return proc.exitValue();
                } catch (IllegalThreadStateException itse) {
                    return -Integer.MAX_VALUE;
                }
            }
            try {
                // if process finished, return
                return proc.exitValue();
            } catch (IllegalThreadStateException itse) {
                // process is still running, continue
            }
        }
    }
}

Related

1. runCommand(String command)
2. runCommand(String command, String args, String file)
3. runCommand(String command[])
4. runCommand(String program, ArrayList args)
5. runCommand(String s)
6. runCommand(String[] args)
7. runCommand(String[] cmdArray, String extraPath, String libPath)
8. runCommand(String[] command)
9. runCommand(String[] command)