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Issue 6606493159784448: New JNI bindings (Closed)
Patch Set: Added missing empty lines after file comments Created April 2, 2014, 8:49 a.m.
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1 /*
2 * This file is part of Adblock Plus <http://adblockplus.org/>,
3 * Copyright (C) 2006-2014 Eyeo GmbH
4 *
5 * Adblock Plus is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 3 as
7 * published by the Free Software Foundation.
8 *
9 * Adblock Plus is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with Adblock Plus. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18 package org.adblockplus.android;
19
20 import java.io.IOException;
21 import java.io.Reader;
22
23 /**
24 * Wrapper for JS executor native code.
25 */
26 public class JSEngine
27 {
28 private long context;
29
30 public JSEngine(Object callback)
31 {
32 context = nativeInitialize(callback);
33 }
34
35 public void release()
36 {
37 nativeRelease(context);
38 }
39
40 public Object evaluate(String script)
41 {
42 if (script == null)
43 throw new IllegalArgumentException("empty script");
44 return nativeExecute(script, context);
45 }
46
47 public Object evaluate(Reader reader) throws IOException
48 {
49 return evaluate(readAll(reader));
50 }
51
52 private String readAll(Reader reader) throws IOException
53 {
54 StringBuilder sb = new StringBuilder();
55
56 char[] buffer = new char[8192];
57 int read;
58
59 while ((read = reader.read(buffer, 0, buffer.length)) > 0)
60 {
61 sb.append(buffer, 0, read);
62 }
63
64 return sb.toString();
65 }
66
67 public Object get(String name)
68 {
69 return nativeGet(name, context);
70 }
71
72 public void put(String name, Object value)
73 {
74 nativePut(name, value, context);
75 }
76
77 public long runCallbacks()
78 {
79 return nativeRunCallbacks(context);
80 }
81
82 public void callback(long callback, Object[] params)
83 {
84 nativeCallback(callback, params, context);
85 }
86
87 private native long nativeInitialize(Object callback);
88
89 private native void nativeRelease(long context);
90
91 private native Object nativeExecute(String script, long context);
92
93 private native Object nativeGet(String name, long context);
94
95 private native Object nativePut(String name, Object value, long context);
96
97 private native long nativeRunCallbacks(long context);
98
99 private native void nativeCallback(long callback, Object[] params, long contex t);
100
101 static
102 {
103 System.loadLibrary("jsEngine");
104 }
105 }
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