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• OutputUtil.java

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com.sun.xml.messaging.saaj.packaging.mime.util.OutputUtil Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2016 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
 * http://glassfish.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]"
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 * If you wish your version of this file to be governed by only the CDDL or
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 * 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
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 */

/*
 * @(#)OutputUtil.java  1.6 02/03/27
 */



package com.sun.xml.messaging.saaj.packaging.mime.util;

import java.io.OutputStream;
import java.io.IOException;

/**
 * This class is to support writing out Strings as a sequence of bytes
 * terminated by a CRLF sequence. The String must contain only US-ASCII
 * characters.

 *
 * The expected use is to write out RFC822 style headers to an output
 * stream. 

 *
 * @author Kohsuke Kawaguchi
 */
public abstract class OutputUtil {
    private static byte[] newline = {'\r','\n'};

    public static void writeln(String s,OutputStream out) throws IOException {
        writeAsAscii(s,out);
        writeln(out);
    }

    /**
     * Writes a string as ASCII string.
     *
     * @param s string.
     * @param out output stream.
     *
     * @throws IOException if an I/O error occurs.
     */
    public static void writeAsAscii(String s,OutputStream out) throws IOException {
        int len = s.length();
        for( int i=0; i