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11 package org.eclipse.osgi.framework.internal.core;
12
13 import java.io.IOException  ;
14 import java.io.InputStream ;
15 import java.net.URL ;
16 import java.util.*;
17 import org.eclipse.osgi.framework.util.Headers;
18 import org.osgi.framework.Bundle;
19 import org.osgi.framework.Constants;
20
21
24 public class ManifestLocalization {
25 private AbstractBundle bundle = null;
26 private Dictionary rawHeaders = null;
27 private Dictionary defaultLocaleHeaders = null;
28 private Hashtable cache = new Hashtable(5);
29
30 public ManifestLocalization(AbstractBundle bundle, Dictionary rawHeaders) {
31 this.bundle = bundle;
32 this.rawHeaders = rawHeaders;
33 }
34
35 protected Dictionary getHeaders(String localeString) {
36 if (localeString.length() == 0)
37 return (rawHeaders);
38 boolean isDefaultLocale = false;
39 String defaultLocale = Locale.getDefault().toString();
40 if (localeString.equals(defaultLocale)) {
41 if (defaultLocaleHeaders != null)
42 return (defaultLocaleHeaders);
43 isDefaultLocale = true;
44 }
45 try {
46 bundle.checkValid();
47 } catch (IllegalStateException ex) {
48 if (defaultLocaleHeaders != null)
50 return defaultLocaleHeaders;
51 return (rawHeaders);
52 }
53 ResourceBundle localeProperties = getResourceBundle(localeString);
54 if (localeProperties == null && !isDefaultLocale)
55 localeProperties = getResourceBundle(defaultLocale);
57 Enumeration e = this.rawHeaders.keys();
58 Headers localeHeaders = new Headers(this.rawHeaders.size());
59 while (e.hasMoreElements()) {
60 String key = (String ) e.nextElement();
61 String value = (String ) this.rawHeaders.get(key);
62 if (value.startsWith("%") && (value.length() > 1)) { String propertiesKey = value.substring(1);
64 try {
65 value = localeProperties == null ? propertiesKey : (String ) localeProperties.getObject(propertiesKey);
66 } catch (MissingResourceException ex) {
67 value = propertiesKey;
68 }
69 }
70 localeHeaders.set(key, value);
71 }
72 localeHeaders.setReadOnly();
73 if (isDefaultLocale) {
74 defaultLocaleHeaders = localeHeaders;
75 }
76 return (localeHeaders);
77 }
78
79 private String [] buildNLVariants(String nl) {
80 ArrayList result = new ArrayList();
81 int lastSeparator;
82 while ((lastSeparator = nl.lastIndexOf('_')) != -1) {
83 result.add(nl);
84 if (lastSeparator != -1) {
85 nl = nl.substring(0, lastSeparator);
86 }
87 }
88 result.add(nl);
89 result.add(""); return (String []) result.toArray(new String [result.size()]);
92 }
93
94
98 protected ResourceBundle getResourceBundle(String localeString) {
99 String propertiesLocation = (String ) rawHeaders.get(Constants.BUNDLE_LOCALIZATION);
100 if (propertiesLocation == null) {
101 propertiesLocation = Constants.BUNDLE_LOCALIZATION_DEFAULT_BASENAME;
102 }
103
104 BundleResourceBundle result = (BundleResourceBundle) cache.get(localeString);
105 if (result != null)
106 return (ResourceBundle) (result.isEmpty() ? null : result);
107 String [] nlVarients = buildNLVariants(localeString);
108 BundleResourceBundle parent = null;
109 for (int i = nlVarients.length - 1; i >= 0; i--) {
110 BundleResourceBundle varientBundle = null;
111 URL varientURL = findResource(propertiesLocation + (nlVarients[i].equals("") ? nlVarients[i] : '_' + nlVarients[i]) + ".properties"); if (varientURL == null) {
113 varientBundle = (BundleResourceBundle) cache.get(nlVarients[i]);
114 } else {
115 InputStream resourceStream = null;
116 try {
117 resourceStream = varientURL.openStream();
118 varientBundle = new LocalizationResourceBundle(resourceStream);
119 } catch (IOException e) {
120 } finally {
122 if (resourceStream != null) {
123 try {
124 resourceStream.close();
125 } catch (IOException e3) {
126 }
128 }
129 }
130 }
131
132 if (varientBundle == null) {
133 varientBundle = new EmptyResouceBundle();
134 }
135 if (parent != null)
136 varientBundle.setParent((ResourceBundle) parent);
137 cache.put(nlVarients[i], varientBundle);
138 parent = varientBundle;
139 }
140 result = (BundleResourceBundle) cache.get(localeString);
141 return (ResourceBundle) (result.isEmpty() ? null : result);
142 }
143
144 private URL findResource(String resource) {
145 AbstractBundle searchBundle = bundle;
146 if (bundle.isResolved()) {
147 if (bundle.isFragment() && bundle.getHosts() != null) {
148 searchBundle = bundle.getHosts()[0].getBundleHost();
150 if (searchBundle.getState() == Bundle.UNINSTALLED)
151 searchBundle = bundle;
152 }
153 return findInResolved(resource, searchBundle);
154 }
155 return findInBundle(resource, searchBundle);
156 }
157
158 private URL findInResolved(String filePath, AbstractBundle bundleHost) {
159
160 URL result = findInBundle(filePath, bundleHost);
161 if (result != null)
162 return result;
163 return findInFragments(filePath, bundleHost);
164 }
165
166 private URL findInBundle(String filePath, AbstractBundle searchBundle) {
167 return searchBundle.getEntry(filePath);
168 }
169
170 private URL findInFragments(String filePath, AbstractBundle searchBundle) {
171 org.osgi.framework.Bundle[] fragments = searchBundle.getFragments();
172 URL fileURL = null;
173 for (int i = 0; fragments != null && i < fragments.length && fileURL == null; i++) {
174 if (fragments[i].getState() != Bundle.UNINSTALLED)
175 fileURL = fragments[i].getEntry(filePath);
176 }
177 return fileURL;
178 }
179
180 private abstract interface BundleResourceBundle {
181 void setParent(ResourceBundle parent);
182
183 boolean isEmpty();
184 }
185
186 private class LocalizationResourceBundle extends PropertyResourceBundle implements BundleResourceBundle {
187 public LocalizationResourceBundle(InputStream in) throws IOException {
188 super(in);
189 }
190
191 public void setParent(ResourceBundle parent) {
192 super.setParent(parent);
193 }
194
195 public boolean isEmpty() {
196 return false;
197 }
198 }
199
200 private class EmptyResouceBundle extends ResourceBundle implements BundleResourceBundle {
201 public Enumeration getKeys() {
202 return null;
203 }
204
205 protected Object handleGetObject(String arg0) throws MissingResourceException {
206 return null;
207 }
208
209 public void setParent(ResourceBundle parent) {
210 super.setParent(parent);
211 }
212
213 public boolean isEmpty() {
214 if (parent == null)
215 return true;
216 return ((BundleResourceBundle) parent).isEmpty();
217 }
218 }
219 }
220 |
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