jaroslav@644
|
1 |
/**
|
jaroslav@644
|
2 |
* Back 2 Browser Bytecode Translator
|
jaroslav@1787
|
3 |
* Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
|
jaroslav@644
|
4 |
*
|
jaroslav@644
|
5 |
* This program is free software: you can redistribute it and/or modify
|
jaroslav@644
|
6 |
* it under the terms of the GNU General Public License as published by
|
jaroslav@644
|
7 |
* the Free Software Foundation, version 2 of the License.
|
jaroslav@644
|
8 |
*
|
jaroslav@644
|
9 |
* This program is distributed in the hope that it will be useful,
|
jaroslav@644
|
10 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
jaroslav@644
|
11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
jaroslav@644
|
12 |
* GNU General Public License for more details.
|
jaroslav@644
|
13 |
*
|
jaroslav@644
|
14 |
* You should have received a copy of the GNU General Public License
|
jaroslav@644
|
15 |
* along with this program. Look for COPYING file in the top folder.
|
jaroslav@644
|
16 |
* If not, see http://opensource.org/licenses/GPL-2.0.
|
jaroslav@644
|
17 |
*/
|
jaroslav@644
|
18 |
package org.apidesign.vm4brwsr;
|
jaroslav@644
|
19 |
|
jaroslav@672
|
20 |
import java.io.ByteArrayInputStream;
|
jaroslav@644
|
21 |
import java.io.IOException;
|
jaroslav@1551
|
22 |
import java.io.InputStream;
|
jaroslav@644
|
23 |
import java.net.URL;
|
jaroslav@1575
|
24 |
import org.apidesign.bck2brwsr.core.Exported;
|
jaroslav@644
|
25 |
import org.apidesign.bck2brwsr.core.JavaScriptBody;
|
jaroslav@644
|
26 |
|
jaroslav@644
|
27 |
/** Conversion from classpath to load function.
|
jaroslav@644
|
28 |
*
|
jaroslav@644
|
29 |
* @author Jaroslav Tulach <jtulach@netbeans.org>
|
jaroslav@644
|
30 |
*/
|
jaroslav@1942
|
31 |
@Exported
|
jaroslav@1550
|
32 |
final class ClassPath {
|
jaroslav@1550
|
33 |
private ClassPath() {
|
jaroslav@644
|
34 |
}
|
jaroslav@644
|
35 |
|
jaroslav@644
|
36 |
public static void init() {
|
jaroslav@644
|
37 |
}
|
jaroslav@729
|
38 |
@JavaScriptBody(args = { "arr" }, body = "return arr.length;")
|
jaroslav@729
|
39 |
private static native int length(Object arr);
|
jaroslav@729
|
40 |
@JavaScriptBody(args = { "arr", "index" }, body = "return arr[index];")
|
jaroslav@729
|
41 |
private static native Object at(Object arr, int index);
|
jaroslav@729
|
42 |
@JavaScriptBody(args = { "arr", "index", "value" }, body = "arr[index] = value; return value;")
|
jaroslav@729
|
43 |
private static native Object set(Object arr, int index, Object value);
|
jaroslav@644
|
44 |
|
jaroslav@1554
|
45 |
private static boolean doingToZip;
|
jaroslav@1575
|
46 |
|
jaroslav@1581
|
47 |
static byte[] loadBytes(String resource, Object classpath, int skip)
|
jaroslav@729
|
48 |
throws IOException, ClassNotFoundException {
|
jaroslav@729
|
49 |
for (int i = 0; i < length(classpath); i++) {
|
jaroslav@1581
|
50 |
byte[] arr = loadBytes(resource, classpath, i, skip);
|
jaroslav@1581
|
51 |
if (arr != null) {
|
jaroslav@1581
|
52 |
return arr;
|
jaroslav@1581
|
53 |
}
|
jaroslav@1581
|
54 |
}
|
jaroslav@1581
|
55 |
return null;
|
jaroslav@1581
|
56 |
}
|
jaroslav@1581
|
57 |
@Exported static byte[] loadBytes(String resource, Object classpath, int i, int skip)
|
jaroslav@1581
|
58 |
throws IOException, ClassNotFoundException {
|
jaroslav@1581
|
59 |
Object c = at(classpath, i);
|
jaroslav@1581
|
60 |
if (c instanceof String && !doingToZip) {
|
jaroslav@1581
|
61 |
try {
|
jaroslav@1581
|
62 |
doingToZip = true;
|
jaroslav@1581
|
63 |
String url = (String)c;
|
jaroslav@1581
|
64 |
final Bck2Brwsr.Resources z = toZip(url);
|
jaroslav@1581
|
65 |
c = set(classpath, i, z);
|
jaroslav@1581
|
66 |
final byte[] man = readBytes(z, "META-INF/MANIFEST.MF");
|
jaroslav@1581
|
67 |
if (man != null) {
|
jaroslav@1581
|
68 |
String mainClass = processClassPathAttr(man, url, classpath);
|
jaroslav@743
|
69 |
// if (mainClass != null) {
|
jaroslav@743
|
70 |
// Class.forName(mainClass);
|
jaroslav@743
|
71 |
// }
|
jaroslav@644
|
72 |
}
|
jaroslav@1581
|
73 |
} catch (IOException ex) {
|
jaroslav@1581
|
74 |
set(classpath, i, ex);
|
jaroslav@1581
|
75 |
log("Cannot load " + c + " - " + ex.getClass().getName() + ":" + ex.getMessage());
|
jaroslav@1581
|
76 |
} finally {
|
jaroslav@1581
|
77 |
doingToZip = false;
|
jaroslav@644
|
78 |
}
|
jaroslav@1581
|
79 |
}
|
jaroslav@1581
|
80 |
if (resource != null) {
|
jaroslav@1581
|
81 |
byte[] checkRes;
|
jaroslav@1581
|
82 |
if (c instanceof Bck2Brwsr.Resources) {
|
jaroslav@1581
|
83 |
checkRes = readBytes((Bck2Brwsr.Resources)c, resource);
|
jaroslav@1581
|
84 |
if (checkRes != null && --skip < 0) {
|
jaroslav@1581
|
85 |
return checkRes;
|
jaroslav@1581
|
86 |
}
|
jaroslav@1581
|
87 |
} else {
|
jaroslav@1581
|
88 |
checkRes = callFunction(c, resource, skip);
|
jaroslav@1581
|
89 |
if (checkRes != null) {
|
jaroslav@1581
|
90 |
return checkRes;
|
jaroslav@644
|
91 |
}
|
jaroslav@644
|
92 |
}
|
jaroslav@644
|
93 |
}
|
jaroslav@644
|
94 |
return null;
|
jaroslav@644
|
95 |
}
|
jaroslav@706
|
96 |
|
jaroslav@1375
|
97 |
@JavaScriptBody(args = { "fn", "res", "skip" }, body =
|
jaroslav@1375
|
98 |
"if (typeof fn === 'function') return fn(res, skip);\n"
|
jaroslav@729
|
99 |
+ "return null;"
|
jaroslav@729
|
100 |
)
|
jaroslav@1375
|
101 |
private static native byte[] callFunction(Object fn, String res, int skip);
|
jaroslav@729
|
102 |
|
jaroslav@1358
|
103 |
@JavaScriptBody(args = { "msg" }, body = "if (typeof console !== 'undefined') console.log(msg.toString());")
|
jaroslav@706
|
104 |
private static native void log(String msg);
|
jaroslav@706
|
105 |
|
jaroslav@729
|
106 |
private static String processClassPathAttr(final byte[] man, String url, Object classpath) throws IOException {
|
jaroslav@702
|
107 |
try (ParseMan is = new ParseMan(new ByteArrayInputStream(man))) {
|
jaroslav@672
|
108 |
String cp = is.toString();
|
jaroslav@702
|
109 |
if (cp != null) {
|
jaroslav@702
|
110 |
cp = cp.trim();
|
jaroslav@702
|
111 |
for (int p = 0; p < cp.length();) {
|
jaroslav@702
|
112 |
int n = cp.indexOf(' ', p);
|
jaroslav@702
|
113 |
if (n == -1) {
|
jaroslav@702
|
114 |
n = cp.length();
|
jaroslav@702
|
115 |
}
|
jaroslav@702
|
116 |
String el = cp.substring(p, n);
|
jaroslav@702
|
117 |
URL u = new URL(new URL(url), el);
|
jaroslav@702
|
118 |
classpath = addToArray(classpath, u.toString());
|
jaroslav@702
|
119 |
p = n + 1;
|
jaroslav@702
|
120 |
}
|
jaroslav@672
|
121 |
}
|
jaroslav@702
|
122 |
return is.getMainClass();
|
jaroslav@672
|
123 |
}
|
jaroslav@672
|
124 |
}
|
jaroslav@672
|
125 |
|
jaroslav@729
|
126 |
private static Object addToArray(Object arr, String value) {
|
jaroslav@729
|
127 |
final int last = length(arr);
|
jaroslav@729
|
128 |
Object ret = enlargeArray(arr, last + 1);
|
jaroslav@729
|
129 |
set(ret, last, value);
|
jaroslav@672
|
130 |
return ret;
|
jaroslav@672
|
131 |
}
|
jaroslav@672
|
132 |
|
jaroslav@729
|
133 |
@JavaScriptBody(args = { "arr", "len" }, body = "while (arr.length < len) arr.push(null); return arr;")
|
jaroslav@729
|
134 |
private static native Object enlargeArray(Object arr, int len);
|
jaroslav@1554
|
135 |
|
jaroslav@1551
|
136 |
private static Bck2Brwsr.Resources toZip(String path) throws IOException {
|
jaroslav@1551
|
137 |
URL u = new URL(path);
|
jaroslav@1551
|
138 |
byte[] zipData = (byte[]) u.getContent(new Class[]{byte[].class});
|
jaroslav@1551
|
139 |
Bck2Brwsr.Resources r;
|
jaroslav@1551
|
140 |
try {
|
jaroslav@1551
|
141 |
Class<?> fastJar = Class.forName("org.apidesign.bck2brwsr.vmzip.ZipResources");
|
jaroslav@1551
|
142 |
return (Bck2Brwsr.Resources) fastJar.getConstructor(byte[].class).newInstance(zipData);
|
jaroslav@1551
|
143 |
} catch (Exception ex) {
|
jaroslav@1551
|
144 |
log("Reading JARs is only possible with enum.zip module included: " + ex.getMessage());
|
jaroslav@1551
|
145 |
ex.printStackTrace();
|
jaroslav@1551
|
146 |
throw new IOException(ex);
|
jaroslav@1551
|
147 |
}
|
jaroslav@1551
|
148 |
}
|
jaroslav@1551
|
149 |
|
jaroslav@1551
|
150 |
private static byte[] readBytes(Bck2Brwsr.Resources r, String res) throws IOException {
|
jaroslav@1551
|
151 |
InputStream is = r.get(res);
|
jaroslav@1551
|
152 |
if (is == null) {
|
jaroslav@1551
|
153 |
return null;
|
jaroslav@1551
|
154 |
}
|
jaroslav@1551
|
155 |
byte[] arr = new byte[is.available()];
|
jaroslav@1551
|
156 |
int off = 0;
|
jaroslav@1551
|
157 |
for (;;) {
|
jaroslav@1551
|
158 |
int len = is.read(arr, off, arr.length - off);
|
jaroslav@1551
|
159 |
if (len == -1) {
|
jaroslav@1551
|
160 |
break;
|
jaroslav@1551
|
161 |
}
|
jaroslav@1551
|
162 |
off += len;
|
jaroslav@1551
|
163 |
}
|
jaroslav@1551
|
164 |
is.close();
|
jaroslav@1551
|
165 |
return arr;
|
jaroslav@1551
|
166 |
}
|
jaroslav@644
|
167 |
}
|