|
1
5
6 package org.exoplatform.commons.utils;
7
8 import java.util.Enumeration  ;
9 import java.util.HashMap ;
10 import java.util.Iterator ;
11 import java.util.Locale ;
12 import java.util.Map ;
13 import java.util.ResourceBundle ;
14 import java.util.Set ;
15 import java.util.Vector ;
16 import java.util.regex.Matcher ;
17 import java.util.regex.Pattern ;
18
19
23 public class MapResourceBundle extends ResourceBundle {
24
25 private final static String REGEXP = "#\\{.*\\}";
26
27 private Map props = new HashMap ();
28 private ResourceBundle rB;
29 private Locale locale;
30
31 public MapResourceBundle(Locale l) {
32 this.locale = l;
33 }
34
35 public MapResourceBundle(ResourceBundle rB, Locale l) {
36 this.locale = l;
37 this.rB = rB;
38 initMap();
39 }
40
41 private void initMap() {
42 Enumeration e = rB.getKeys();
43 while (e.hasMoreElements()) {
44 String s = (String ) e.nextElement();
45 Object value = rB.getObject(s);
46 try {
47 String [] newArray = rB.getStringArray(s);
48 if (props.get(s) == null) {
49 props.put(s, newArray);
50 }
51 } catch (ClassCastException ex) {
52 props.put(s, value);
53 }
54 }
55 }
56
57 protected Object handleGetObject(String key) {
58 return props.get(key);
59 }
60
61 public Enumeration getKeys() {
62 return new Vector (props.keySet()).elements();
63 }
64
65 public Locale getLocale() {
66 return this.locale;
67 }
68
69 public void add(String key, Object value){
70 props.put(key, value);
71 }
72
73 public void remove(String key){
74 props.remove(key);
75 }
76
77 public void merge(ResourceBundle bundle){
78 Enumeration e = bundle.getKeys();
79 while (e.hasMoreElements()) {
80 String s = (String ) e.nextElement();
81 Object value = bundle.getObject(s);
82 try {
83 String [] newArray = bundle.getStringArray(s);
84 if (props.get(s) == null) {
85 props.put(s, newArray);
86 }
87 } catch (ClassCastException ex) {
88 props.put(s, value);
89 }
90 }
91 }
92
93 public void resolveDependencies(){
94 Map tempMap = new HashMap ();
95 Set keys = props.keySet();
96 Pattern pattern = Pattern.compile(REGEXP);
97 for (Iterator iter = keys.iterator(); iter.hasNext();) {
98 String element = (String ) iter.next();
99 String value = lookupKey(element, pattern);
100 tempMap.put(element, value);
101 }
102 props = tempMap;
103 }
104
105 private String lookupKey(String key, Pattern pattern){
106 String s = (String ) props.get(key);
107 if(s == null) return key;
108 Matcher matcher = pattern.matcher(s);
109 if(matcher.find()){
110 return recursivedResolving(s, pattern);
111 }
112 return s;
113 }
114
115 private String recursivedResolving(String key, Pattern pattern){
116 String resolved = key;
117 StringBuffer sB = new StringBuffer ();
118 while(resolved.indexOf('#') != -1){
119 sB.setLength(0) ;
120 int firstIndex = resolved.indexOf('#');
121 int lastIndex = resolved.indexOf('}', firstIndex);
122 String realKey = resolved.substring(firstIndex + 2, lastIndex);
123 sB.append(resolved.substring(0, firstIndex));
124 sB.append(lookupKey(realKey, pattern));
125 sB.append(resolved.substring(lastIndex + 1));
126 resolved = sB.toString();
127 }
128 return resolved;
129 }
130 } |
Popular Tags |
Java API By Example, From Geeks To Geeks.