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 * @key randomness
29 */
30
31 import java.util.*;
32 import java.nio.*;
33 import java.nio.charset.*;
34
35 public class TestStringCodingUTF8 {
36 public static void main(String[] args) throws Throwable {
37 test("UTF-8");
38 test("CESU-8");
39 // security manager on
40 System.setSecurityManager(new PermissiveSecurityManger());
41 test("UTF-8");
42 test("CESU-8");
43 }
44
45 static void test(String csn) throws Throwable {
46 Charset cs = Charset.forName(csn);
47 char[] bmp = new char[0x10000];
48 for (int i = 0; i < 0x10000; i++) {
49 bmp[i] = (char)i;
50 }
51 test(cs, bmp, 0, bmp.length);
52
53 ArrayList<Integer> list = new ArrayList<>(0x20000);
54 for (int i = 0; i < 0x20000; i++) {
55 list.add(i, i);
56 }
57 Collections.shuffle(list);
58 int j = 0;
59 char[] bmpsupp = new char[0x30000];
60 for (int i = 0; i < 0x20000; i++) {
61 j += Character.toChars(list.get(i), bmpsupp, j);
62 }
63 assert (j == bmpsupp.length);
64 test(cs, bmpsupp, 0, bmpsupp.length);
65
66 // randomed "off" and "len" on shuffled data
67 Random rnd = new Random();
68 int maxlen = 1000;
69 int itr = 5000;
70 for (int i = 0; i < itr; i++) {
71 int off = rnd.nextInt(bmpsupp.length - maxlen);
72 int len = rnd.nextInt(maxlen);
73 test(cs, bmpsupp, off, len);
74 }
75
76 // random length of bytes, test the edge corner case
77 for (int i = 0; i < itr; i++) {
78 byte[] ba = new byte[rnd.nextInt(maxlen)];
79 rnd.nextBytes(ba);
80 //new String(csn);
81 if (!new String(ba, cs.name()).equals(
82 new String(decode(cs, ba, 0, ba.length))))
83 throw new RuntimeException("new String(csn) failed");
84 //new String(cs);
85 if (!new String(ba, cs).equals(
86 new String(decode(cs, ba, 0, ba.length))))
87 throw new RuntimeException("new String(cs) failed");
88 }
89 System.out.println("done!");
90 }
91
92 static void test(Charset cs, char[] ca, int off, int len) throws Throwable {
93 String str = new String(ca, off, len);
94 byte[] ba = encode(cs, ca, off, len);
95
96 //getBytes(csn);
97 byte[] baStr = str.getBytes(cs.name());
98 if (!Arrays.equals(ba, baStr))
99 throw new RuntimeException("getBytes(csn) failed");
100
101 //getBytes(cs);
102 baStr = str.getBytes(cs);
103 if (!Arrays.equals(ba, baStr))
104 throw new RuntimeException("getBytes(cs) failed");
105
106 //new String(csn);
107 if (!new String(ba, cs.name()).equals(new String(decode(cs, ba, 0, ba.length))))
108 throw new RuntimeException("new String(csn) failed");
109
110 //new String(cs);
111 if (!new String(ba, cs).equals(new String(decode(cs, ba, 0, ba.length))))
112 throw new RuntimeException("new String(cs) failed");
113 }
114
115 // copy/paste of the StringCoding.decode()
116 static char[] decode(Charset cs, byte[] ba, int off, int len) {
117 CharsetDecoder cd = cs.newDecoder();
118 int en = (int)(len * cd.maxCharsPerByte());
119 char[] ca = new char[en];
120 if (len == 0)
121 return ca;
122 cd.onMalformedInput(CodingErrorAction.REPLACE)
123 .onUnmappableCharacter(CodingErrorAction.REPLACE)
124 .reset();
125
126 ByteBuffer bb = ByteBuffer.wrap(ba, off, len);
127 CharBuffer cb = CharBuffer.wrap(ca);
128 try {
129 CoderResult cr = cd.decode(bb, cb, true);
130 if (!cr.isUnderflow())
131 cr.throwException();
132 cr = cd.flush(cb);
133 if (!cr.isUnderflow())
134 cr.throwException();
135 } catch (CharacterCodingException x) {
136 throw new Error(x);
137 }
138 return Arrays.copyOf(ca, cb.position());
139 }
140
141 // copy/paste of the StringCoding.encode()
142 static byte[] encode(Charset cs, char[] ca, int off, int len) {
143 CharsetEncoder ce = cs.newEncoder();
144 int en = (int)(len * ce.maxBytesPerChar());
145 byte[] ba = new byte[en];
146 if (len == 0)
147 return ba;
148 ce.onMalformedInput(CodingErrorAction.REPLACE)
149 .onUnmappableCharacter(CodingErrorAction.REPLACE)
150 .reset();
151 ByteBuffer bb = ByteBuffer.wrap(ba);
152 CharBuffer cb = CharBuffer.wrap(ca, off, len);
153 try {
154 CoderResult cr = ce.encode(cb, bb, true);
155 if (!cr.isUnderflow())
156 cr.throwException();
157 cr = ce.flush(bb);
158 if (!cr.isUnderflow())
159 cr.throwException();
160 } catch (CharacterCodingException x) {
161 throw new Error(x);
162 }
163 return Arrays.copyOf(ba, bb.position());
164 }
165
166 static class PermissiveSecurityManger extends SecurityManager {
167 @Override public void checkPermission(java.security.Permission p) {}
168 }
169 }