/*

 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

 * 

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 * 

 *   - Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 * 

 *   - Neither the name of Oracle nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 * 

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/**

 * This is a simple shell tool in JavaScript.

 *

 * Runs any operating system command using Java "exec". When "eval" command is

 * used, evaluates argument(s) as JavaScript code.

 */

var imports = new JavaImporter(java.io, java.lang, java.util);

function prompt() {

    java.lang.System.out.print(">");

}

with (imports) {

    var reader = new BufferedReader(new InputStreamReader(System["in"]));

    var line = null;

    prompt();

    while ((line = reader.readLine()) != null) {

        if (line != "") {

            var args = line.split(" ");

            try {

                if (args[0] == "eval") {

                    var code = line.substring("eval".length);

                    var res = eval(code);

                    if (res != undefined) {

                        print(res);

                    }

                } else {

                    var argList = new ArrayList();

                    for (i in args) { argList.add(args[i]); }                

                    var procBuilder = new ProcessBuilder(argList);

                    procBuilder.redirectErrorStream();

                    var proc = procBuilder.start();

                    var out = new BufferedReader(new InputStreamReader(proc.getInputStream()));

                    var line = null;

                    while ((line = out.readLine()) != null) {

                        System.out.println(line);

                    }

                    proc.waitFor();

                }

            } catch (e) {

                print(e);

            }

        }

        prompt();

    }

}