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17 package org.mevenide.idea;
18
19 import java.io.IOException;
20 import java.io.InputStream;
21 import java.text.MessageFormat;
22 import java.util.*;
23 import org.apache.commons.io.IOUtils;
24 import org.apache.commons.lang.StringUtils;
25 import org.apache.commons.logging.Log;
26 import org.apache.commons.logging.LogFactory;
27
28 /***
29 * Loads UTF-8 resources from resource bundles.
30 *
31 * <p>This is an enhancement over the standard java.util.ResourceBundle class which allows
32 * providing additional properties to the message (for inline place holders) as well as
33 * supporting hierarchical bundles.</p>
34 *
35 * @author Arik
36 */
37 public final class Res {
38 private static final Object LOCK = new Object();
39 private static final Log LOG = LogFactory.getLog(Res.class);
40 private static final String UNKNOWN_KEY = "(unknown resource key)";
41
42 private static final Map<String, Res> cache = Collections.synchronizedMap(new HashMap<String, Res>(
43 10));
44
45 privateong> final String packageName;
46 private final String bundleName;
47 private final Res parent;
48 private final ResourceBundle bundle;
49 private static final String DEFAULT_BUNDLE_NAME = "res";
50
51 private Res(final String pPackageName,
52 final String pBundleName,
53 final Res pParent,
54 final ResourceBundle pBundle) {
55 if (pPackageName != null && pPackageName.trim().length() == 0)
56 packageName = null;
57 else
58 packageName = pPackageName;
59 bundleName = pBundleName;
60 bundle = pBundle;
61 parent = pParent;
62 }
63
64 public String getPackageName() {
65 return</strong> packageName;
66 }
67
68 public String getBundleName() {
69 return bundleName;
70 }
71
72 public String getName() {
73 return</strong> buildBundleName(packageName, bundleName);
74 }
75
76 public Res getParent() {
77 return parent;
78 }
79
80 public ResourceBundle getBundle() {
81 return bundle;
82 }
83
84 public String getResource(final String pResourceName) {
85 final String res;
86 if</strong> (packageName != null) {
87 String lPackageName = packageName.replace('.', '/');
88 if (!lPackageName.endsWith("/"))
89 lPackageName = lPackageName + "/";
90 res = lPackageName + pResourceName;
91 }
92 else
93 res = pResourceName;
94
95 final ClassLoader cl = Thread.currentThread().getContextClassLoader();
96 final InputStream is = cl.getResourceAsStream(res);
97 if (is == null)
98 throw new MissingResourceException(
99 "Can't find resource '" + res + "'", "", "");
100
101 try {
102 return IOUtils.toString(is, "UTF-8");
103 }
104 catch (IOException e) {
105 final MissingResourceException exc = new MissingResourceException(
106 "Error reading resource '" + res + "'", "", "");
107 throw (MissingResourceException) exc.initCause(e);
108 }
109 finally {
110 IOUtils.closeQuietly(is);
111 }
112 }
113
114 public String get(final String pKey, final Object... pArguments) {
115 if (pKey == null) {
116 LOG.warn("null key has been passed for bundle '" + bundleName + "'");
117 return UNKNOWN_KEY;
118 }
119
120 try {
121 String msg = bundle.getString(pKey);
122 if (msg == null || msg.trim().length() == 0)
123 return "";
124 else {
125 msg = StringUtils.replace(msg, "${", "'${'");
126 msg = StringUtils.replace(msg, "'", "''");
127 return MessageFormat.format(msg, pArguments);
128 }
129 }
130 catch (MissingResourceException e) {
131 if (parent == null)
132 throw e;
133 return parent.get(pKey, pArguments);
134 }
135 }
136
137 public Map getAll() {
138 final Enumeration<String> keys = bundle.getKeys();
139 final Map<String, String> all = new HashMap<String, String>();
140
141 while (keys.hasMoreElements()) {
142 final String key = keys.nextElement();
143 all.put(key, get(key));
144 }
145
146 return all;
147 }
148
149 public static Res getInstance(final Class pClass) {
150 return getInstance(pClass, DEFAULT_BUNDLE_NAME);
151 }
152
153 public static Res getInstance(final Class pClass, final String pBundleName) {
154 return getInstance(pClass.getPackage().getName(), pBundleName);
155 }
156
157 public static Res getInstance(final String pPackageName) {
158 return getInstance(pPackageName, DEFAULT_BUNDLE_NAME);
159 }
160
161 public static Res getInstance(final String pPackageName,
162 final String pBundleName) {
163
164 synchronized (LOCK) {
165 return getRes(pPackageName, pBundleName);
166 }
167 }
168
169 static Res getRes(final String pPackageName,
170 final String pBundleName) {
171
172
173
174 String packageName = pPackageName;
175 String baseName;
176 baseName = buildBundleName(packageName, pBundleName);
177
178
179 final Res cachedRes = cache.get(baseName);
180 if (cachedRes != null)
181 return cachedRes;
182
183
184 ResourceBundle bundle = null;
185 while (bundle == null) {
186 try {
187 bundle = ResourceBundle.getBundle(baseName);
188 }
189 catch (MissingResourceException e) {
190 rong>if (packageName == null || packageName.trim().length() == 0)
191 break;
192
193 g>final int lastDotIndex = packageName.lastIndexOf('.');
194 if (lastDotIndex < 0) {
195 packageName = null;
196 baseName = pBundleName;
197 }
198 else {
199 packageName = packageName.substring(0, lastDotIndex);
200 baseName = packageName + "." + pBundleName;
201 }
202 }
203 }
204
205 if (bundle == null) {
206 throw new MissingResourceException(
207 "Can't find bundle for base bundleName '" + baseName + "'",
208 baseName,
209 "");
210 }
211
212 Res parent = null;
213 if (packageName != null && packageName.trim().length() > 0) {
214 int lastDotIndex = packageName.lastIndexOf('.');
215
216
217
218
219 while (parent == null && lastDotIndex > 0) {
220 final String parentPackageName = pPackageName.substring(0, lastDotIndex);
221 try {
222 parent = getInstance(parentPackageName, pBundleName);
223 }
224 catch (MissingResourceException e) {
225 lastDotIndex = pPackageName.lastIndexOf('.', lastDotIndex - 1);
226 }
227 }
228 }
229
230 final<Res res = new Res(packageName, pBundleName, parent, bundle)/package-summary.html">/strong> Res res = new Res(packageName, pBundleName, parent, bundle);
231
232
233 cache.put(baseName, res);
234
235 return res;
236 }
237
238 protected static String buildBundleName(final String pPackageName,
239 final String pBundleName) {
240 final String baseName;
241 if (pPackageName == null || pPackageName.trim().length() == 0)
242 baseName = pBundleName;
243 else
244 baseName = pPackageName + "." + pBundleName;
245 return baseName;
246 }
247 }