| ContextReplace.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.util;
24
25 import com.liferay.portal.kernel.util.StringUtil;
26
27 import java.util.ArrayList;
28 import java.util.Iterator;
29 import java.util.LinkedHashMap;
30 import java.util.List;
31 import java.util.Map;
32
33 /**
34 * <a href="ContextReplace.java.html"><b><i>View Source</i></b></a>
35 *
36 * @author Brian Wing Shun Chan
37 *
38 */
39 public class ContextReplace implements Cloneable {
40
41 public ContextReplace() {
42 this(null);
43 }
44
45 public ContextReplace(Map<String, String> context) {
46 if (context != null) {
47 _context.putAll(context);
48
49 _updateArrays();
50 }
51 }
52
53 public void addValue(String key, String value) {
54 if ((key != null) && (value != null)) {
55 _context.put(key, value);
56
57 _updateArrays();
58 }
59 }
60
61 public String replace(String text) {
62 if (text == null) {
63 return null;
64 }
65
66 if (_keys.length == 0) {
67 return text;
68 }
69
70 return StringUtil.replace(text, _keys, _values);
71 }
72
73 public Object clone() {
74 return new ContextReplace(_context);
75 }
76
77 private void _updateArrays() {
78 List<String> keys = new ArrayList<String>();
79 List<String> values = new ArrayList<String>();
80
81 Iterator<Map.Entry<String, String>> itr =
82 _context.entrySet().iterator();
83
84 while (itr.hasNext()) {
85 Map.Entry<String, String> entry = itr.next();
86
87 String entryKey = entry.getKey();
88 String entryValue = entry.getValue();
89
90 keys.add("${" + entryKey + "}");
91 values.add(entryValue);
92 }
93
94 _keys = keys.toArray(new String[keys.size()]);
95 _values = values.toArray(new String[values.size()]);
96 }
97
98 private Map<String, String> _context = new LinkedHashMap<String, String>();
99 private String[] _keys = new String[0];
100 private String[] _values = new String[0];
101
102 }