1/*
2 * Copyright (c) 2008, 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
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22 */
23
24/* @test
25   @bug 4867457
26   @summary Check for correct byte buffer underflow handling in EUC-JP
27 */
28
29import java.io.*;
30import java.nio.*;
31import java.nio.charset.*;
32
33public class EUCJPUnderflowDecodeTest {
34    public static void main(String[] args) throws Exception{
35
36        ByteBuffer bb = ByteBuffer.allocateDirect(255);
37        CharBuffer cc = CharBuffer.allocate(255);
38
39
40        // Test both regular EUC-JP and Linux variant
41
42        String[] charsetNames = { "EUC_JP", "EUC-JP-LINUX" };
43
44        for (int i = 0 ; i < charsetNames.length; i++) {
45            Charset cs = Charset.forName(charsetNames[i]);
46            CharsetDecoder decoder = cs.newDecoder();
47            bb.clear();
48            cc.clear();
49
50            // Fakes a partial 3 byte EUC_JP (JIS-X-0212 range)
51            // encoded character/byte sequence
52            bb.put((byte)0x8f);
53            bb.put((byte)0xa2);
54            bb.flip();
55            // Now decode with endOfInput method param set to
56            // indicate to decoder that there is more encoded
57            // data to follow in a subsequent invocation
58
59            CoderResult result = decoder.decode(bb, cc, false);
60
61            // java.nio.charset.CharsetDecoder spec specifies
62            // that the coder ought to return CoderResult.UNDERFLOW
63            // when insufficient bytes have been supplied to complete
64            // the decoding operation
65
66            if (result != CoderResult.UNDERFLOW) {
67                throw new Exception("test failed - UNDERFLOW not returned");
68            }
69
70            // Repeat the test with the lead byte (minus its pursuing
71            // trail byte) for the EUC-JP 2 byte (JIS208) range
72            decoder.reset();
73            bb.clear();
74            cc.clear();
75            bb.put((byte)0xa1);
76            bb.flip();
77            result = decoder.decode(bb, cc, false);
78            if (result != CoderResult.UNDERFLOW) {
79                throw new Exception("test failed");
80            }
81
82            // finally ensure that a valid JIS208 range EUC-JP
83            // 2 byte value is correctly decoded when it is presented
84            // at the trailing bounds of a ByteBuffer in the case where
85            // charset decoder expects (endOfInput ==false) more
86            //input to follow
87
88            decoder.reset();
89            bb.clear();
90            cc.clear();
91            bb.put((byte)0xa1);
92            bb.put((byte)0xc0);
93            bb.flip();
94
95            result = decoder.decode(bb, cc, false);
96
97            cc.flip();
98
99            if (result != CoderResult.UNDERFLOW && cc.get() != '\uFF3c') {
100                throw new Exception("test failed to decode EUC-JP (0xA1C0)");
101            }
102        }
103    }
104}
105