permissionsetfactory.java

来自「cqME :java framework for TCK test.」· Java 代码 · 共 117 行

/*
 * $Id$
 *
 * Copyright 1996-2007 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions.
 *
 */

package com.sun.tck.midp.policy;

import java.util.StringTokenizer;

import com.sun.javatest.TestDescription;
import com.sun.javatest.TestEnvironment;
import com.sun.javatest.util.I18NResourceBundle;

/**
 * Convenient factory that produces PermissionSets.
 */
public final class PermissionSetFactory {

    // This is a static utility class.
    private PermissionSetFactory() {
        super();
    }

    /**
     * Returns a PermissionSet with permissions specified in the test
     * description, in "grant" and "deny" fields. May return an empty
     * PermissionSet if no permissions are specified.
     * <p>
     * Note: Values provided in "grant" and "deny" fields are resolved against
     * the Test Environment.
     * 
     * @param td
     *            The test.
     * @param env
     *            The test environment.
     * @return A PermissionSet with specified permissions to be granted and
     *         denied, as provided by the test description.
     * @throws IllegalArgumentException
     *             in case of any errors.
     */
    public static PermissionSet fromTest(
            TestDescription td, TestEnvironment env) {

        PermissionSet ps = new PermissionSet();
        String granted = td.getParameter("grant");
        if (granted != null) {
            granted = resolve(granted, env);
            StringTokenizer st = new StringTokenizer(granted, " \t\n\r\f,");
            while (st.hasMoreTokens()) {
                if (!ps.grant(st.nextToken())) {
                    throw new IllegalArgumentException(
                            i18n.getString("tf.ContradictoryPermissions",
                            td.getRootRelativeURL()));
                }
            }

        }
        String denied = td.getParameter("deny");
        if (denied != null) {
            denied = resolve(denied, env);
            StringTokenizer st = new StringTokenizer(denied, " \t\n\r\f,");
            while (st.hasMoreTokens()) {
                if (!ps.deny(st.nextToken())) {
                    throw new IllegalArgumentException(
                            i18n.getString("tf.ContradictoryPermissions",
                            td.getRootRelativeURL()));
                }
            }
        }

        return ps;
    }

    private static String resolve(String s, TestEnvironment env) {
        try {
            String[] ss = env.resolve(s);
            if (ss.length == 0) {
                return "";
            }
            StringBuffer buf = new StringBuffer(ss[0]);
            for (int i = 1; i < ss.length; i++) {
                buf.append(" ").append(ss[i]);
            }
            return buf.toString();
        } catch (TestEnvironment.Fault e) {
            throw new IllegalArgumentException(i18n.getString("tf.ErrorResolving", 
                                               s));

        }
    }

    private static final I18NResourceBundle i18n =
            I18NResourceBundle.getBundleForClass(PermissionSetFactory.class);
}