aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.xml.internal.bind.marshaller;
aoqi@0: 
aoqi@0: import java.io.IOException;
aoqi@0: import java.io.Writer;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Performs no character escaping. Usable only when the output encoding
aoqi@0:  * is UTF, but this handler gives the maximum performance.
aoqi@0:  *
aoqi@0:  * @author
aoqi@0:  *     Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
aoqi@0:  */
aoqi@0: public class MinimumEscapeHandler implements CharacterEscapeHandler {
aoqi@0: 
aoqi@0:     private MinimumEscapeHandler() {}  // no instanciation please
aoqi@0: 
aoqi@0:     public static final CharacterEscapeHandler theInstance = new MinimumEscapeHandler();
aoqi@0: 
aoqi@0:     public void escape(char[] ch, int start, int length, boolean isAttVal, Writer out) throws IOException {
aoqi@0:         // avoid calling the Writerwrite method too much by assuming
aoqi@0:         // that the escaping occurs rarely.
aoqi@0:         // profiling revealed that this is faster than the naive code.
aoqi@0:         int limit = start+length;
aoqi@0:         for (int i = start; i < limit; i++) {
aoqi@0:             char c = ch[i];
aoqi@0:                 if(c == '&' || c == '<' || c == '>' || c == '\r' || (c == '\"' && isAttVal) ) {
aoqi@0:                 if(i!=start)
aoqi@0:                     out.write(ch,start,i-start);
aoqi@0:                 start = i+1;
aoqi@0:                 switch (ch[i]) {
aoqi@0:                     case '&':
aoqi@0:                         out.write("&amp;");
aoqi@0:                         break;
aoqi@0:                     case '<':
aoqi@0:                         out.write("&lt;");
aoqi@0:                         break;
aoqi@0:                     case '>':
aoqi@0:                         out.write("&gt;");
aoqi@0:                         break;
aoqi@0:                     case '\"':
aoqi@0:                         out.write("&quot;");
aoqi@0:                         break;
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0: 
aoqi@0:         if( start!=limit )
aoqi@0:             out.write(ch,start,limit-start);
aoqi@0:     }
aoqi@0: 
aoqi@0: }