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Rhino is an open-source implementation of JavaScript written entirely in Java. It is typically embedded into Java applications to provide scripting to end users.

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/* 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/. */

package org.mozilla.javascript.drivers;

import java.io.*;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import java.util.Arrays;

import org.mozilla.javascript.ContextFactory;

public class TestUtils {
    private static ContextFactory.GlobalSetter globalSetter;

    public static void grabContextFactoryGlobalSetter() {
        if (globalSetter == null) {
            globalSetter = ContextFactory.getGlobalSetter();
        }
    }

    public static void setGlobalContextFactory(ContextFactory factory) {
        grabContextFactoryGlobalSetter();
        globalSetter.setContextFactoryGlobal(factory);
    }

    public static File[] recursiveListFiles(File dir, FileFilter filter) {
        if (!dir.isDirectory())
            throw new IllegalArgumentException(dir + " is not a directory");
        List fileList = new ArrayList();
        recursiveListFilesHelper(dir, filter, fileList);
        return fileList.toArray(new File[fileList.size()]);
    }

    public static void recursiveListFilesHelper(File dir, FileFilter filter,
                                                List fileList)
    {
        for (File f: dir.listFiles()) {
            if (f.isDirectory()) {
                recursiveListFilesHelper(f, filter, fileList);
            } else {
                if (filter.accept(f))
                    fileList.add(f);
            }
        }
    }

    public static void addTestsFromFile(String filename, List list)
            throws IOException {
        addTestsFromStream(new FileInputStream(new File(filename)), list);
    }

    public static void addTestsFromStream(InputStream in, List list)
            throws IOException {
        Properties props = new Properties();
        props.load(in);
        for (Object obj: props.keySet()) {
            list.add(obj.toString());
        }
    }

    public static String[] loadTestsFromResource(String resource, String[] inherited)
            throws IOException {
        List list = inherited == null ?
                new ArrayList() :
                new ArrayList(Arrays.asList(inherited));
        InputStream in = StandardTests.class.getResourceAsStream(resource);
        if (in != null)
            addTestsFromStream(in, list);
        return list.toArray(new String[0]);
    }

    public static boolean matches(String[] patterns, String path) {
        for (int i=0; i