All Downloads are FREE. Search and download functionalities are using the official Maven repository.

com.sun.xml.ws.util.StreamUtils Maven / Gradle / Ivy

There is a newer version: 4.0.3
Show newest version
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.xml.ws.util;

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;

/**
 * @author Jitendra Kotamraju
 */
public class StreamUtils {

    /*
     * Finds if the stream has some content or not
     *
     * @return null if there is no data
     *         else stream to be used
     */
    public static InputStream hasSomeData(InputStream in) {
        if (in != null) {
            try {
                if (in.available() < 1) {
                    if (!in.markSupported()) {
                        in = new BufferedInputStream(in);
                    }
                    in.mark(1);
                    if (in.read() != -1) {
                        in.reset();
                    } else {
                        in = null;          // No data
                    }
                }
            } catch(IOException ioe) {
                in = null;
            }
        }
        return in;
    }

}




© 2015 - 2024 Weber Informatics LLC | Privacy Policy