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RunScript.java

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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

*

* 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/. */

import org.mozilla.javascript.Context;

import org.mozilla.javascript.Scriptable;

/**

* RunScript: simplest example of controlling execution of Rhino.

*

* Collects its arguments from the command line, executes the

* script, and prints the result.

*

* @author Norris Boyd

*/

public class RunScript {

public static void main(String args[])

{

// Creates and enters a Context. The Context stores information

// about the execution environment of a script.

Context cx = Context.enter();

try {

// Initialize the standard objects (Object, Function, etc.)

// This must be done before scripts can be executed. Returns

// a scope object that we use in later calls.

Scriptable scope = cx.initStandardObjects();

// Collect the arguments into a single string.

String s = "";

for (int i=0; i < args.length; i++) {

s += args[i];

}

// Now evaluate the string we've colected.

Object result = cx.evaluateString(scope, s, "<cmd>", 1, null);

// Convert the result to a string and print it.

System.err.println(Context.toString(result));

} finally {

// Exit from the context.

Context.exit();

}

}

}