1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
/*
* Copyright (c) 1999, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 4085160 4139951 5005831
* @summary Test that required character encodings are supported
*/
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.charset.Charset;
import java.nio.charset.UnsupportedCharsetException;
public class Encodings {
static boolean equals(byte[] a, byte[] b) {
if (a.length != b.length) return false;
for (int i = 0; i < a.length; i++)
if (a[i] != b[i]) return false;
return true;
}
static void go(String enc, String str, final byte[] bytes, boolean bidir)
throws Exception
{
final Charset charset = Charset.forName(enc);
/* String(byte[] bs, String enc) */
if (!(new String(bytes, enc).equals(str)))
throw new Exception(enc + ": String constructor failed");
/* String(byte[] bs, Charset charset) */
if (!(new String(bytes, charset).equals(str)))
throw new Exception(charset + ": String constructor failed");
/* String(byte[] bs, int off, int len, Charset charset) */
String start = str.substring(0, 2);
String end = str.substring(2);
if (enc.equals("UTF-16BE") || enc.equals("UTF-16LE")) {
if (!(new String(bytes, 0, 4, charset).equals(start)))
throw new Exception(charset + ": String constructor failed");
if (!(new String(bytes, 4, bytes.length - 4, charset).equals(end)))
throw new Exception(charset + ": String constructor failed");
} else if (enc.equals("UTF-16")) {
if (!(new String(bytes, 0, 6, charset).equals(start)))
throw new Exception(charset + ": String constructor failed");
} else {
if (!(new String(bytes, 0, 2, charset).equals(start)))
throw new Exception(charset + ": String constructor failed");
if (!(new String(bytes, 2, bytes.length - 2, charset).equals(end)))
throw new Exception(charset + ": String constructor failed");
}
/* InputStreamReader */
ByteArrayInputStream bi = new ByteArrayInputStream(bytes);
InputStreamReader r = new InputStreamReader(bi, enc);
String inEnc = r.getEncoding();
int n = str.length();
char[] cs = new char[n];
for (int i = 0; i < n;) {
int m;
if ((m = r.read(cs, i, n - i)) < 0)
throw new Exception(enc + ": EOF on InputStreamReader");
i += m;
}
if (!(new String(cs).equals(str)))
throw new Exception(enc + ": InputStreamReader failed");
if (!bidir) {
System.err.println(enc + " --> " + inEnc);
return;
}
/* String.getBytes(String enc) */
byte[] bs = str.getBytes(enc);
if (!equals(bs, bytes))
throw new Exception(enc + ": String.getBytes failed");
/* String.getBytes(Charset charset) */
bs = str.getBytes(charset);
if (!equals(bs, bytes))
throw new Exception(charset + ": String.getBytes failed");
// Calls to String.getBytes(Charset) shouldn't automatically
// use the cached thread-local encoder.
if (charset.name().equals("UTF-16BE")) {
String s = new String(bytes, charset);
// Replace the thread-local encoder with this one.
byte[] bb = s.getBytes(Charset.forName("UTF-16LE"));
if (bytes.length != bb.length) {
// Incidental test.
throw new RuntimeException("unequal length: "
+ bytes.length + " != "
+ bb.length);
} else {
boolean diff = false;
// Expect different byte[] between UTF-16LE and UTF-16BE
// even though encoder was previously cached by last call
// to getBytes().
for (int i = 0; i < bytes.length; i++) {
if (bytes[i] != bb[i])
diff = true;
}
if (!diff)
throw new RuntimeException("byte arrays equal");
}
}
/* OutputStreamWriter */
ByteArrayOutputStream bo = new ByteArrayOutputStream();
OutputStreamWriter w = new OutputStreamWriter(bo, enc);
String outEnc = w.getEncoding();
w.write(str);
w.close();
bs = bo.toByteArray();
if (!equals(bs, bytes))
throw new Exception(enc + ": OutputStreamWriter failed");
System.err.println(enc + " --> " + inEnc + " / " + outEnc);
}
static void go(String enc, String str, byte[] bytes) throws Exception {
go(enc, str, bytes, true);
}
public static void main(String[] args) throws Exception {
go("US-ASCII", "abc", new byte[] { 'a', 'b', 'c' });
go("us-ascii", "abc", new byte[] { 'a', 'b', 'c' });
go("ISO646-US", "abc", new byte[] { 'a', 'b', 'c' });
go("ISO-8859-1", "ab\u00c7", new byte[] { 'a', 'b', (byte)'\u00c7' });
go("UTF-8", "ab\u1e09",
new byte[] { 'a', 'b',
(byte)(0xe0 | (0x0f & (0x1e09 >> 12))),
(byte)(0x80 | (0x3f & (0x1e09 >> 6))),
(byte)(0x80 | (0x3f & 0x1e09)) });
go("UTF-16BE", "ab\u1e09",
new byte[] { 0, 'a', 0, 'b', 0x1e, 0x09 });
go("UTF-16LE", "ab\u1e09",
new byte[] { 'a', 0, 'b', 0, 0x09, 0x1e });
/* UTF-16 accepts both byte orders on input but always uses big-endian
* on output, so test all three cases
*/
go("UTF-16", "ab\u1e09",
new byte[] { (byte)0xfe, (byte)0xff, 0, 'a', 0, 'b', 0x1e, 0x09 });
go("UTF-16", "ab\u1e09",
new byte[] { (byte)0xff, (byte)0xfe, 'a', 0, 'b', 0, 0x09, 0x1e },
false);
}
}
|
