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1
7
8 package com.ibm.icu.impl;
9
10 import java.io.InputStream  ;
11 import java.util.Enumeration ;
12 import java.util.MissingResourceException ;
13 import java.util.PropertyResourceBundle ;
14 import java.util.ResourceBundle ;
15 import java.util.Vector ;
16
17 import com.ibm.icu.util.ULocale;
18 import com.ibm.icu.util.UResourceBundle;
19
20
25 public class ResourceBundleWrapper extends UResourceBundle {
26 private ResourceBundle bundle = null;
27 private String localeID = null;
28 private String baseName = null;
29 private Vector keys=null;
30 private int loadingStatus = -1;
31
32 private ResourceBundleWrapper(ResourceBundle bundle){
33 this.bundle=bundle;
34 }
35
36 protected void setLoadingStatus(int newStatus){
37 loadingStatus = newStatus;
38 }
39
40 protected Object handleGetObject(String key){
41 ResourceBundleWrapper current = this;
42 Object obj = null;
43 while(current!=null){
44 try{
45 obj = current.bundle.getObject(key);
46 break;
47 }catch(MissingResourceException ex){
48 current = (ResourceBundleWrapper)current.getParent();
49 }
50 }
51 if (obj == null){
52 throw new MissingResourceException ("Can't find resource for bundle "
53 +baseName
54 +", key "+key,
55 this.getClass().getName(),
56 key);
57 }
58 return obj;
59 }
60
61 public Enumeration getKeys(){
62 return keys.elements();
63 }
64
65 private void initKeysVector(){
66 ResourceBundleWrapper current = this;
67 keys = new Vector ();
68 while(current!=null){
69 Enumeration e = current.bundle.getKeys();
70 while(e.hasMoreElements()){
71 String elem = (String )e.nextElement();
72 if(!keys.contains(elem)){
73 keys.add(elem);
74 }
75 }
76 current = (ResourceBundleWrapper)current.getParent();
77 }
78 }
79 protected String getLocaleID(){
80 return localeID;
81 }
82
83 protected String getBaseName(){
84 return bundle.getClass().getName().replace('.','/');
85 }
86
87 public ULocale getULocale(){
88 return new ULocale(localeID);
89 }
90
91 public UResourceBundle getParent(){
92 return (UResourceBundle)parent;
93 }
94
95 private static final boolean DEBUG = ICUDebug.enabled("resourceBundleWrapper");
97
98 public static UResourceBundle getBundleInstance(String baseName, String localeID,
100 ClassLoader root, boolean disableFallback){
101 UResourceBundle b = instantiateBundle(baseName, localeID, root, disableFallback);
102 if(b==null){
103 String separator ="_";
104 if(baseName.indexOf('/')>=0){
105 separator = "/";
106 }
107 throw new MissingResourceException ("Could not find the bundle "+ baseName+separator+ localeID,"","");
108 }
109 return b;
110 }
111 protected static synchronized UResourceBundle instantiateBundle(String baseName, String localeID,
113 ClassLoader root, boolean disableFallback) {
114 if (root == null) {
115 root = ClassLoader.getSystemClassLoader();
117 }
118 final ClassLoader cl = root;
119 String name = baseName;
120 ULocale defaultLocale = ULocale.getDefault();
121 if (localeID.length() != 0) {
122 name = name + "_" + localeID;
123 }
124
125 ResourceBundleWrapper b = (ResourceBundleWrapper)loadFromCache(cl, name, defaultLocale);
126 if(b==null){
127 ResourceBundleWrapper parent = null;
128 int i = localeID.lastIndexOf('_');
129
130 if (i != -1) {
131 String locName = localeID.substring(0, i);
132 parent = (ResourceBundleWrapper)loadFromCache(cl, baseName+"_"+locName,defaultLocale);
133 if(parent == null){
134 parent = (ResourceBundleWrapper)instantiateBundle(baseName, locName , cl, disableFallback);
135 }
136 }else if(localeID.length()>0){
137 parent = (ResourceBundleWrapper)loadFromCache(cl, baseName,defaultLocale);
138 if(parent==null){
139 parent = (ResourceBundleWrapper)instantiateBundle(baseName, "", cl, disableFallback);
140 }
141 }
142 try {
143 Class cls = cl.loadClass(name);
144 ResourceBundle bx = (ResourceBundle ) cls.newInstance();
145 b = new ResourceBundleWrapper(bx);
146 if (parent != null) {
147 b.setParent(parent);
148 }
149 b.baseName=baseName;
150 b.localeID = localeID;
151
152 } catch (ClassNotFoundException e) {
153
154 final String resName = name.replace('.', '/') + ".properties";
155 InputStream stream = (InputStream )java.security.AccessController.doPrivileged(
156 new java.security.PrivilegedAction () {
157 public Object run() {
158 if (cl != null) {
159 return cl.getResourceAsStream(resName);
160 } else {
161 return ClassLoader.getSystemResourceAsStream(resName);
162 }
163 }
164 }
165 );
166 if (stream != null) {
167 stream = new java.io.BufferedInputStream (stream);
169 try {
170 b = new ResourceBundleWrapper(new PropertyResourceBundle (stream));
171 if (parent != null) {
172 b.setParent(parent);
173 }
174 b.baseName=baseName;
175 b.localeID=localeID;
176 } catch (Exception ex) {
177 } finally {
179 try {
180 stream.close();
181 } catch (Exception ex) {
182 }
184 }
185 }
186
187 if (b==null) {
190 String defaultName = defaultLocale.toString();
191 if (localeID.length()>0 && localeID.indexOf('_')< 0 && defaultName.indexOf(localeID) == -1) {
192 b = (ResourceBundleWrapper)loadFromCache(cl,baseName+"_"+defaultName, defaultLocale);
193 if(b==null){
194 b = (ResourceBundleWrapper)instantiateBundle(baseName , defaultName, cl, disableFallback);
195 }
196 }
197 }
198 if(b==null){
200 b=parent;
201 }
202 } catch (Exception e) {
203 if (DEBUG)
204 System.out.println("failure");
205 if (DEBUG)
206 System.out.println(e);
207 }
208
209 addToCache(cl, name, defaultLocale, b);
210 }
211 if(b!=null){
212 b.initKeysVector();
213 }else{
214 if(DEBUG)System.out.println("Returning null for "+baseName+"_"+localeID);
215 }
216
217 return b;
218 }
219 }
220 |
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