jaroslav@106
|
1 |
/**
|
jaroslav@106
|
2 |
* Back 2 Browser Bytecode Translator
|
jaroslav@106
|
3 |
* Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
|
jaroslav@106
|
4 |
*
|
jaroslav@106
|
5 |
* This program is free software: you can redistribute it and/or modify
|
jaroslav@106
|
6 |
* it under the terms of the GNU General Public License as published by
|
jaroslav@106
|
7 |
* the Free Software Foundation, version 2 of the License.
|
jaroslav@106
|
8 |
*
|
jaroslav@106
|
9 |
* This program is distributed in the hope that it will be useful,
|
jaroslav@106
|
10 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
jaroslav@106
|
11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
jaroslav@106
|
12 |
* GNU General Public License for more details.
|
jaroslav@106
|
13 |
*
|
jaroslav@106
|
14 |
* You should have received a copy of the GNU General Public License
|
jaroslav@106
|
15 |
* along with this program. Look for COPYING file in the top folder.
|
jaroslav@106
|
16 |
* If not, see http://opensource.org/licenses/GPL-2.0.
|
jaroslav@106
|
17 |
*/
|
jaroslav@29
|
18 |
package org.apidesign.vm4brwsr;
|
jaroslav@29
|
19 |
|
jaroslav@29
|
20 |
import java.io.BufferedWriter;
|
jaroslav@1058
|
21 |
import java.io.File;
|
jaroslav@29
|
22 |
import java.io.FileWriter;
|
jaroslav@29
|
23 |
import java.io.IOException;
|
jaroslav@29
|
24 |
import java.io.Writer;
|
lubomir@1020
|
25 |
import java.net.URI;
|
lubomir@1020
|
26 |
import java.net.URISyntaxException;
|
lubomir@1020
|
27 |
import java.net.URL;
|
lubomir@1020
|
28 |
import java.util.Enumeration;
|
lubomir@1020
|
29 |
import java.util.jar.JarEntry;
|
lubomir@1020
|
30 |
import java.util.jar.JarFile;
|
jaroslav@29
|
31 |
|
jaroslav@136
|
32 |
/** Generator of JavaScript from bytecode of classes on classpath of the VM
|
jaroslav@136
|
33 |
* with a Main method.
|
jaroslav@29
|
34 |
*
|
jaroslav@29
|
35 |
* @author Jaroslav Tulach <jtulach@netbeans.org>
|
jaroslav@29
|
36 |
*/
|
jaroslav@136
|
37 |
final class Main {
|
jaroslav@136
|
38 |
private Main() {}
|
jaroslav@29
|
39 |
|
lubomir@1020
|
40 |
public static void main(String... args) throws IOException, URISyntaxException {
|
jaroslav@881
|
41 |
final String obfuscate = "--obfuscatelevel";
|
lubomir@1029
|
42 |
final String extension = "--createextension";
|
lubomir@1029
|
43 |
|
jaroslav@29
|
44 |
if (args.length < 2) {
|
jaroslav@298
|
45 |
System.err.println("Bck2Brwsr Translator from Java(tm) to JavaScript, (c) Jaroslav Tulach 2012");
|
lubomir@1029
|
46 |
System.err.print("Usage: java -cp ... -jar ... [");
|
jaroslav@881
|
47 |
System.err.print(obfuscate);
|
jaroslav@881
|
48 |
System.err.print(" [");
|
jaroslav@881
|
49 |
boolean first = true;
|
jaroslav@881
|
50 |
for (ObfuscationLevel l : ObfuscationLevel.values()) {
|
jaroslav@881
|
51 |
if (!first) {
|
jaroslav@881
|
52 |
System.err.print('|');
|
jaroslav@881
|
53 |
}
|
jaroslav@881
|
54 |
System.err.print(l.name());
|
jaroslav@881
|
55 |
first = false;
|
jaroslav@881
|
56 |
}
|
lubomir@1029
|
57 |
System.err.print("]] [");
|
lubomir@1029
|
58 |
System.err.print(extension);
|
jaroslav@881
|
59 |
System.err.println("] <file_to_generate_js_code_to> java/lang/Class org/your/App ...");
|
jaroslav@881
|
60 |
System.exit(9);
|
jaroslav@29
|
61 |
}
|
lubomir@1020
|
62 |
|
lubomir@1020
|
63 |
final ClassLoader mainClassLoader = Main.class.getClassLoader();
|
lubomir@1020
|
64 |
|
jaroslav@881
|
65 |
ObfuscationLevel obfLevel = ObfuscationLevel.NONE;
|
lubomir@1029
|
66 |
boolean createExtension = false;
|
jaroslav@881
|
67 |
StringArray classes = new StringArray();
|
jaroslav@881
|
68 |
String generateTo = null;
|
jaroslav@881
|
69 |
for (int i = 0; i < args.length; i++) {
|
jaroslav@881
|
70 |
if (obfuscate.equals(args[i])) { // NOI18N
|
jaroslav@881
|
71 |
i++;
|
jaroslav@881
|
72 |
try {
|
jaroslav@881
|
73 |
obfLevel = ObfuscationLevel.valueOf(args[i]);
|
jaroslav@881
|
74 |
} catch (Exception e) {
|
jaroslav@881
|
75 |
System.err.print(obfuscate);
|
jaroslav@881
|
76 |
System.err.print(" parameter needs to be followed by one of ");
|
jaroslav@881
|
77 |
boolean first = true;
|
jaroslav@881
|
78 |
for (ObfuscationLevel l : ObfuscationLevel.values()) {
|
jaroslav@881
|
79 |
if (!first) {
|
jaroslav@881
|
80 |
System.err.print(", ");
|
jaroslav@881
|
81 |
}
|
jaroslav@881
|
82 |
System.err.print(l.name());
|
jaroslav@881
|
83 |
first = false;
|
jaroslav@881
|
84 |
}
|
jaroslav@881
|
85 |
System.err.println();
|
jaroslav@881
|
86 |
System.exit(1);
|
jaroslav@881
|
87 |
}
|
jaroslav@881
|
88 |
continue;
|
jaroslav@881
|
89 |
}
|
lubomir@1029
|
90 |
if (extension.equals(args[i])) { // NOI18N
|
lubomir@1029
|
91 |
createExtension = true;
|
lubomir@1029
|
92 |
continue;
|
lubomir@1029
|
93 |
}
|
jaroslav@881
|
94 |
if (generateTo == null) {
|
jaroslav@881
|
95 |
generateTo = args[i];
|
jaroslav@881
|
96 |
} else {
|
lubomir@1020
|
97 |
collectClasses(classes, mainClassLoader, args[i]);
|
jaroslav@881
|
98 |
}
|
jaroslav@881
|
99 |
}
|
jaroslav@1058
|
100 |
|
jaroslav@1058
|
101 |
File gt = new File(generateTo);
|
jaroslav@1058
|
102 |
if (Boolean.getBoolean("skip.if.exists") && gt.isFile()) {
|
jaroslav@1058
|
103 |
System.err.println("Skipping as " + gt + " exists.");
|
jaroslav@1058
|
104 |
System.exit(0);
|
jaroslav@1058
|
105 |
}
|
jaroslav@1058
|
106 |
|
jaroslav@1058
|
107 |
try (Writer w = new BufferedWriter(new FileWriter(gt))) {
|
jaroslav@1604
|
108 |
Bck2Brwsr c = Bck2Brwsr.newCompiler().
|
jaroslav@881
|
109 |
obfuscation(obfLevel).
|
jaroslav@881
|
110 |
addRootClasses(classes.toArray()).
|
jaroslav@1604
|
111 |
resources(new LdrRsrcs(Main.class.getClassLoader(), true));
|
jaroslav@1604
|
112 |
|
jaroslav@1604
|
113 |
if (createExtension) {
|
jaroslav@1604
|
114 |
c = c.library();
|
jaroslav@1604
|
115 |
}
|
jaroslav@1604
|
116 |
|
jaroslav@1604
|
117 |
c.generate(w);
|
lubomir@281
|
118 |
}
|
jaroslav@29
|
119 |
}
|
lubomir@1020
|
120 |
|
lubomir@1020
|
121 |
private static void collectClasses(
|
lubomir@1020
|
122 |
final StringArray dest,
|
lubomir@1020
|
123 |
final ClassLoader cl, final String relativePath)
|
lubomir@1020
|
124 |
throws IOException, URISyntaxException {
|
lubomir@1020
|
125 |
final Enumeration<URL> urls = cl.getResources(relativePath);
|
lubomir@1020
|
126 |
if (!urls.hasMoreElements()) {
|
lubomir@1020
|
127 |
dest.add(relativePath);
|
lubomir@1020
|
128 |
return;
|
lubomir@1020
|
129 |
}
|
lubomir@1020
|
130 |
do {
|
lubomir@1020
|
131 |
final URL url = urls.nextElement();
|
lubomir@1020
|
132 |
switch (url.getProtocol()) {
|
lubomir@1020
|
133 |
case "file":
|
lubomir@1020
|
134 |
collectClasses(dest, relativePath,
|
lubomir@1020
|
135 |
new File(new URI(url.toString())));
|
lubomir@1020
|
136 |
continue;
|
lubomir@1020
|
137 |
case "jar":
|
lubomir@1020
|
138 |
final String fullPath = url.getPath();
|
lubomir@1020
|
139 |
final int sepIndex = fullPath.indexOf('!');
|
lubomir@1020
|
140 |
final String jarFilePath =
|
lubomir@1020
|
141 |
(sepIndex != -1) ? fullPath.substring(0, sepIndex)
|
lubomir@1020
|
142 |
: fullPath;
|
lubomir@1020
|
143 |
|
lubomir@1020
|
144 |
final URI jarUri = new URI(jarFilePath);
|
lubomir@1020
|
145 |
if (jarUri.getScheme().equals("file")) {
|
lubomir@1020
|
146 |
try (JarFile jarFile = new JarFile(new File(jarUri))) {
|
lubomir@1020
|
147 |
collectClasses(dest, relativePath, jarFile);
|
lubomir@1020
|
148 |
continue;
|
lubomir@1020
|
149 |
}
|
lubomir@1020
|
150 |
}
|
lubomir@1020
|
151 |
break;
|
lubomir@1020
|
152 |
}
|
lubomir@1020
|
153 |
|
lubomir@1020
|
154 |
dest.add(relativePath);
|
lubomir@1020
|
155 |
} while (urls.hasMoreElements());
|
lubomir@1020
|
156 |
}
|
lubomir@1020
|
157 |
|
lubomir@1020
|
158 |
private static void collectClasses(final StringArray dest,
|
lubomir@1020
|
159 |
final String relativePath,
|
lubomir@1020
|
160 |
final File file) {
|
lubomir@1020
|
161 |
if (file.isDirectory()) {
|
lubomir@1020
|
162 |
final File[] subFiles = file.listFiles();
|
lubomir@1020
|
163 |
for (final File subFile: subFiles) {
|
lubomir@1020
|
164 |
collectClasses(dest,
|
lubomir@1020
|
165 |
extendPath(relativePath, subFile.getName()),
|
lubomir@1020
|
166 |
subFile);
|
lubomir@1020
|
167 |
}
|
lubomir@1020
|
168 |
|
lubomir@1020
|
169 |
return;
|
lubomir@1020
|
170 |
}
|
lubomir@1020
|
171 |
|
lubomir@1020
|
172 |
final String filePath = file.getPath();
|
lubomir@1020
|
173 |
if (filePath.endsWith(".class")) {
|
lubomir@1020
|
174 |
validateAndAddClass(dest, relativePath);
|
lubomir@1020
|
175 |
}
|
lubomir@1020
|
176 |
}
|
lubomir@1020
|
177 |
|
lubomir@1020
|
178 |
private static void collectClasses(final StringArray dest,
|
lubomir@1020
|
179 |
final String relativePath,
|
lubomir@1020
|
180 |
final JarFile jarFile) {
|
lubomir@1020
|
181 |
if (relativePath.endsWith(".class")) {
|
lubomir@1020
|
182 |
if (jarFile.getJarEntry(relativePath) != null) {
|
lubomir@1020
|
183 |
validateAndAddClass(dest, relativePath);
|
lubomir@1020
|
184 |
}
|
lubomir@1020
|
185 |
|
lubomir@1020
|
186 |
return;
|
lubomir@1020
|
187 |
}
|
lubomir@1020
|
188 |
|
lubomir@1020
|
189 |
final String expectedPrefix =
|
lubomir@1020
|
190 |
relativePath.endsWith("/") ? relativePath
|
lubomir@1020
|
191 |
: relativePath + '/';
|
lubomir@1020
|
192 |
final Enumeration<JarEntry> entries = jarFile.entries();
|
lubomir@1020
|
193 |
while (entries.hasMoreElements()) {
|
lubomir@1020
|
194 |
final JarEntry entry = entries.nextElement();
|
lubomir@1020
|
195 |
if (!entry.isDirectory()) {
|
lubomir@1020
|
196 |
final String entryName = entry.getName();
|
lubomir@1020
|
197 |
if (entryName.startsWith(expectedPrefix)
|
lubomir@1020
|
198 |
&& entryName.endsWith(".class")) {
|
lubomir@1020
|
199 |
validateAndAddClass(dest, entryName);
|
lubomir@1020
|
200 |
}
|
lubomir@1020
|
201 |
}
|
lubomir@1020
|
202 |
}
|
lubomir@1020
|
203 |
}
|
lubomir@1020
|
204 |
|
lubomir@1020
|
205 |
private static String extendPath(final String relativePath,
|
lubomir@1020
|
206 |
final String fileName) {
|
lubomir@1020
|
207 |
return relativePath.endsWith("/") ? relativePath + fileName
|
lubomir@1020
|
208 |
: relativePath + '/' + fileName;
|
lubomir@1020
|
209 |
}
|
lubomir@1020
|
210 |
|
lubomir@1020
|
211 |
private static void validateAndAddClass(final StringArray dest,
|
lubomir@1020
|
212 |
final String relativePath) {
|
lubomir@1020
|
213 |
final String className =
|
lubomir@1020
|
214 |
relativePath.substring(0, relativePath.length() - 6);
|
lubomir@1020
|
215 |
if (!className.endsWith("package-info")) {
|
lubomir@1020
|
216 |
dest.add(className);
|
lubomir@1020
|
217 |
}
|
lubomir@1020
|
218 |
}
|
jaroslav@29
|
219 |
}
|