1 /*
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 @bug 7040220
26 @summary Test if StringCoding and NIO result have the same de/encoding result for UTF-8
27 * @run main/othervm/timeout=2000 TestStringCodingUTF8
28 */
29
30 import java.util.*;
31 import java.nio.*;
32 import java.nio.charset.*;
33
34 public class TestStringCodingUTF8 {
35 public static void main(String[] args) throws Throwable {
36 test();
37 // security manager on
38 System.setSecurityManager(new PermissiveSecurityManger());
39 test();
40 }
41
42 static void test() throws Throwable {
43 Charset cs = Charset.forName("UTF-8");
44 char[] bmp = new char[0x10000];
45 for (int i = 0; i < 0x10000; i++) {
46 bmp[i] = (char)i;
47 }
48 test(cs, bmp, 0, bmp.length);
49
50 ArrayList<Integer> list = new ArrayList<>(0x20000);
51 for (int i = 0; i < 0x20000; i++) {
52 list.add(i, i);
53 }
54 Collections.shuffle(list);
55 int j = 0;
56 char[] bmpsupp = new char[0x30000];
57 for (int i = 0; i < 0x20000; i++) {
58 j += Character.toChars(list.get(i), bmpsupp, j);
59 }
60 assert (j == bmpsupp.length);
61 test(cs, bmpsupp, 0, bmpsupp.length);
62
63 // randomed "off" and "len" on shuffled data
64 Random rnd = new Random();
65 int maxlen = 1000;
66 int itr = 5000;
67 for (int i = 0; i < itr; i++) {
68 int off = rnd.nextInt(bmpsupp.length - maxlen);
69 int len = rnd.nextInt(maxlen);
70 test(cs, bmpsupp, off, len);
71 }
72
73 // random length of bytes, test the edge corner case
74 for (int i = 0; i < itr; i++) {
75 byte[] ba = new byte[rnd.nextInt(maxlen)];
76 rnd.nextBytes(ba);
77 //new String(csn);
78 if (!new String(ba, cs.name()).equals(
79 new String(decode(cs, ba, 0, ba.length))))
80 throw new RuntimeException("new String(csn) failed");
81 //new String(cs);
82 if (!new String(ba, cs).equals(
83 new String(decode(cs, ba, 0, ba.length))))
84 throw new RuntimeException("new String(cs) failed");
85 }
86 System.out.println("done!");
87 }
88
89 static void test(Charset cs, char[] ca, int off, int len) throws Throwable {
90 String str = new String(ca, off, len);
91 byte[] ba = encode(cs, ca, off, len);
92
93 //getBytes(csn);
94 byte[] baStr = str.getBytes(cs.name());
95 if (!Arrays.equals(ba, baStr))
96 throw new RuntimeException("getBytes(csn) failed");
97
98 //getBytes(cs);
99 baStr = str.getBytes(cs);
100 if (!Arrays.equals(ba, baStr))
101 throw new RuntimeException("getBytes(cs) failed");
102
103 //new String(csn);
104 if (!new String(ba, cs.name()).equals(new String(decode(cs, ba, 0, ba.length))))
105 throw new RuntimeException("new String(csn) failed");
106
107 //new String(cs);
108 if (!new String(ba, cs).equals(new String(decode(cs, ba, 0, ba.length))))
109 throw new RuntimeException("new String(cs) failed");
110 }
111
112 // copy/paste of the StringCoding.decode()
113 static char[] decode(Charset cs, byte[] ba, int off, int len) {
114 CharsetDecoder cd = cs.newDecoder();
115 int en = (int)(len * cd.maxCharsPerByte());
116 char[] ca = new char[en];
117 if (len == 0)
118 return ca;
119 cd.onMalformedInput(CodingErrorAction.REPLACE)
120 .onUnmappableCharacter(CodingErrorAction.REPLACE)
121 .reset();
122
123 ByteBuffer bb = ByteBuffer.wrap(ba, off, len);
124 CharBuffer cb = CharBuffer.wrap(ca);
125 try {
126 CoderResult cr = cd.decode(bb, cb, true);
127 if (!cr.isUnderflow())
128 cr.throwException();
129 cr = cd.flush(cb);
130 if (!cr.isUnderflow())
131 cr.throwException();
132 } catch (CharacterCodingException x) {
133 throw new Error(x);
134 }
135 return Arrays.copyOf(ca, cb.position());
136 }
137
138 // copy/paste of the StringCoding.encode()
139 static byte[] encode(Charset cs, char[] ca, int off, int len) {
140 CharsetEncoder ce = cs.newEncoder();
141 int en = (int)(len * ce.maxBytesPerChar());
142 byte[] ba = new byte[en];
143 if (len == 0)
144 return ba;
145 ce.onMalformedInput(CodingErrorAction.REPLACE)
146 .onUnmappableCharacter(CodingErrorAction.REPLACE)
147 .reset();
148 ByteBuffer bb = ByteBuffer.wrap(ba);
149 CharBuffer cb = CharBuffer.wrap(ca, off, len);
150 try {
151 CoderResult cr = ce.encode(cb, bb, true);
152 if (!cr.isUnderflow())
153 cr.throwException();
154 cr = ce.flush(bb);
155 if (!cr.isUnderflow())
156 cr.throwException();
157 } catch (CharacterCodingException x) {
158 throw new Error(x);
159 }
160 return Arrays.copyOf(ba, bb.position());
161 }
162
163 static class PermissiveSecurityManger extends SecurityManager {
164 @Override public void checkPermission(java.security.Permission p) {}
165 }
166 }