01: /*
02: * @(#)$Id: MinimumEscapeHandler.java,v 1.2.6.1 2007/05/31 21:58:55 ofung Exp $
03: */
04:
05: /*
06: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
07: *
08: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
09: *
10: * The contents of this file are subject to the terms of either the GNU
11: * General Public License Version 2 only ("GPL") or the Common Development
12: * and Distribution License("CDDL") (collectively, the "License"). You
13: * may not use this file except in compliance with the License. You can obtain
14: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
15: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
16: * language governing permissions and limitations under the License.
17: *
18: * When distributing the software, include this License Header Notice in each
19: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
20: * Sun designates this particular file as subject to the "Classpath" exception
21: * as provided by Sun in the GPL Version 2 section of the License file that
22: * accompanied this code. If applicable, add the following below the License
23: * Header, with the fields enclosed by brackets [] replaced by your own
24: * identifying information: "Portions Copyrighted [year]
25: * [name of copyright owner]"
26: *
27: * Contributor(s):
28: *
29: * If you wish your version of this file to be governed by only the CDDL or
30: * only the GPL Version 2, indicate your decision by adding "[Contributor]
31: * elects to include this software in this distribution under the [CDDL or GPL
32: * Version 2] license." If you don't indicate a single choice of license, a
33: * recipient has the option to distribute your version of this file under
34: * either the CDDL, the GPL Version 2 or to extend the choice of license to
35: * its licensees as provided above. However, if you add GPL Version 2 code
36: * and therefore, elected the GPL Version 2 license, then the option applies
37: * only if the new code is made subject to such option by the copyright
38: * holder.
39: */
40: package com.sun.xml.bind.marshaller;
41:
42: import java.io.IOException;
43: import java.io.Writer;
44:
45: /**
46: * Performs no character escaping. Usable only when the output encoding
47: * is UTF, but this handler gives the maximum performance.
48: *
49: * @author
50: * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
51: */
52: public class MinimumEscapeHandler implements CharacterEscapeHandler {
53:
54: private MinimumEscapeHandler() {
55: } // no instanciation please
56:
57: public static final CharacterEscapeHandler theInstance = new MinimumEscapeHandler();
58:
59: public void escape(char[] ch, int start, int length,
60: boolean isAttVal, Writer out) throws IOException {
61: // avoid calling the Writerwrite method too much by assuming
62: // that the escaping occurs rarely.
63: // profiling revealed that this is faster than the naive code.
64: int limit = start + length;
65: for (int i = start; i < limit; i++) {
66: char c = ch[i];
67: if (c == '&' || c == '<' || c == '>'
68: || (c == '\"' && isAttVal)) {
69: if (i != start)
70: out.write(ch, start, i - start);
71: start = i + 1;
72: switch (ch[i]) {
73: case '&':
74: out.write("&");
75: break;
76: case '<':
77: out.write("<");
78: break;
79: case '>':
80: out.write(">");
81: break;
82: case '\"':
83: out.write(""");
84: break;
85: }
86: }
87: }
88:
89: if (start != limit)
90: out.write(ch, start, limit - start);
91: }
92:
93: }
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