forked from actframework/actframework
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathJars.java
More file actions
239 lines (217 loc) · 8.55 KB
/
Jars.java
File metadata and controls
239 lines (217 loc) · 8.55 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
package act.util;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import act.conf.ConfLoader;
import org.osgl.$;
import org.osgl.exception.NotAppliedException;
import org.osgl.logging.L;
import org.osgl.logging.Logger;
import org.osgl.util.E;
import org.osgl.util.FastStr;
import org.osgl.util.IO;
import org.osgl.util.S;
import java.io.*;
import java.net.URL;
import java.util.*;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
/**
* Provides utilities manipulating jar files
*/
public enum Jars {
;
private static Logger logger = L.get(Jars.class);
public static Map<String, byte[]> buildClassNameIndex(File dir) {
return buildClassNameIndex(dir, $.F.FALSE);
}
public static Map<String, byte[]> buildClassNameIndex(File dir, final $.Function<String, Boolean> ignoredClassNames) {
final Map<String, byte[]> idx = new HashMap<>();
F.JarEntryVisitor visitor = F.classNameIndexBuilder(idx, ignoredClassNames);
scanDir(dir, visitor);
return idx;
}
public static Map<String, byte[]> buildClassNameIndex(List<File> jars) {
return buildClassNameIndex(jars, $.F.FALSE);
}
public static Map<String, byte[]> buildClassNameIndex(List<File> jars, final $.Func1<String, Boolean> ignoredClassNames) {
final Map<String, byte[]> idx = new HashMap<>();
F.JarEntryVisitor visitor = F.classNameIndexBuilder(idx, ignoredClassNames);
scanList(jars, visitor);
return idx;
}
/**
* If the class is loaded from a Jar file, then return that file. Otherwise
* return {@code null}
*/
public static File probeJarFile(Class<?> clazz) {
String fileName = ClassNames.classNameToClassFileName(clazz.getName());
URL url = clazz.getClassLoader().getResource(fileName);
if (null != url && "jar".equals(url.getProtocol())) {
String path = url.getPath();
String file = S.str(path).afterFirst("file:").beforeFirst(".jar!").append(".jar").toString();
return new File(file);
} else {
return null;
}
}
public static void scan(File file, F.JarEntryVisitor... visitors) {
file = file.getAbsoluteFile();
if (file.isDirectory()) {
scanDir(file, visitors);
} else {
try {
scanFile(file, visitors);
} catch (IOException e) {
logger.warn(e, "Error scanning jar file: %s", file.getName());
}
}
}
private static void scanList(List<File> jars, F.JarEntryVisitor visitor) {
for (int i = 0, j = jars.size(); i < j; ++i) {
File jar = jars.get(i);
try {
scanFile(jar, visitor);
} catch (IOException e) {
logger.warn(e, "Error scanning jar file: %s", jar.getName());
}
}
}
private static void scanDir(File jarDir, F.JarEntryVisitor... visitors) {
File[] jars = jarDir.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return name.endsWith(".jar");
}
});
int n = jars.length;
for (int i = 0; i < n; ++i) {
File file = jars[i];
try {
scanFile(file, visitors);
} catch (IOException e) {
logger.warn(e, "Error scanning jar file: %s", file.getName());
}
}
}
private static void scanFile(File file, F.JarEntryVisitor... visitors) throws IOException {
try {
JarFile jar = new JarFile(file);
try {
Enumeration<JarEntry> entries = jar.entries();
while (entries.hasMoreElements()) {
JarEntry entry = entries.nextElement();
String name = entry.getName();
if (entry.isDirectory()) {
continue;
}
for (F.JarEntryVisitor visitor : visitors) {
if (name.endsWith(visitor.suffixRequired())) {
visitor.apply(jar, entry);
}
}
}
} finally {
jar.close();
}
} catch (IOException e) {
logger.error(e, "error scan file: %s", file.getAbsolutePath());
}
}
public static byte[] getBytes(JarFile jar, JarEntry entry) {
try {
InputStream is = jar.getInputStream(entry);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
IO.copy(is, baos);
return baos.toByteArray();
} catch (IOException e) {
throw E.ioException(e);
}
}
public static String readContent(JarFile jar, JarEntry entry) {
try {
InputStream is = jar.getInputStream(entry);
return IO.readContentAsString(is);
} catch (IOException e) {
throw E.ioException(e);
}
}
public enum F {
;
public static abstract class JarEntryVisitor extends $.F2<JarFile, JarEntry, Void> {
public String suffixRequired() {
return ".class";
}
}
public static JarEntryVisitor classNameIndexBuilder(final Map<String, byte[]> map, final $.Function<String, Boolean> ignoredClassNames) {
return new F.JarEntryVisitor() {
@Override
public Void apply(JarFile jarFile, JarEntry entry) throws NotAppliedException, $.Break {
String className = ClassNames.classFileNameToClassName(entry.getName());
if (!ignoredClassNames.apply(className)) {
map.put(className, getBytes(jarFile, entry));
}
return null;
}
};
}
/**
* Visit properties files in Jar file and add the file content to map indexed by env tag.
* For example, a jar entry named "conf/dev/abc.properties", the content will be loaded into a properties
* instance and then put into an existing properties indexed by "dev" tag. If no env tag found
* then the properties will be loaded into a properties instance indexed by "common"
*
* @param map the map stores the properties mapped to a configure tag (e.g. common, dev, uat etc)
* @return the visitor
*/
public static JarEntryVisitor appConfigFileIndexBuilder(final Map<String, Properties> map) {
return new F.JarEntryVisitor() {
@Override
public String suffixRequired() {
return ".properties";
}
@Override
public Void apply(JarFile jarFile, JarEntry jarEntry) throws NotAppliedException, $.Break {
try {
String fileName = jarEntry.getName();
if (fileName.startsWith("conf/")) {
FastStr fs = FastStr.of(fileName).afterFirst('/');
String env = ConfLoader.common();
if (fs.contains('/')) {
env = fs.beforeFirst('/').intern();
}
Properties p = map.get(env);
if (null == p) {
p = new Properties();
map.put(env, p);
}
InputStream is = jarFile.getInputStream(jarEntry);
Properties p2 = new Properties();
p2.load(is);
p.putAll(p2);
}
} catch (IOException e) {
logger.warn(e, "Unable to load properties file from jar entry %s", jarEntry.getName());
}
return null;
}
};
}
}
}