292 lines
12 KiB
Java
292 lines
12 KiB
Java
/*
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* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4831163 5053096 5056440 8022224
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* @summary NIO charset basic verification of JISAutodetect decoder
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* @modules jdk.charsets
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* @author Martin Buchholz
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*/
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import java.io.*;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetDecoder;
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import java.nio.charset.CoderResult;
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import static java.lang.System.*;
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public class NIOJISAutoDetectTest {
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private static int failures = 0;
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private static void fail(String failureMsg) {
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System.out.println(failureMsg);
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failures++;
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}
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private static void check(boolean cond, String msg) {
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if (!cond) {
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fail("test failed: " + msg);
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new Exception().printStackTrace();
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}
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}
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private static String SJISName() throws Exception {
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return detectingCharset(new byte[] {(byte)0xbb, (byte)0xdd,
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(byte)0xcf, (byte)0xb2});
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}
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private static String EUCJName() throws Exception {
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return detectingCharset(new byte[] {(byte)0xa4, (byte)0xd2,
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(byte)0xa4, (byte)0xe9});
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}
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private static String detectingCharset(byte[] bytes) throws Exception {
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//----------------------------------------------------------------
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// Test special public methods of CharsetDecoder while we're here
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//----------------------------------------------------------------
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CharsetDecoder cd = Charset.forName("JISAutodetect").newDecoder();
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check(cd.isAutoDetecting(), "isAutodecting()");
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check(! cd.isCharsetDetected(), "isCharsetDetected");
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cd.decode(ByteBuffer.wrap(new byte[] {(byte)'A'}));
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check(! cd.isCharsetDetected(), "isCharsetDetected");
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try {
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cd.detectedCharset();
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fail("no IllegalStateException");
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} catch (IllegalStateException e) {}
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cd.decode(ByteBuffer.wrap(bytes));
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check(cd.isCharsetDetected(), "isCharsetDetected");
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Charset cs = cd.detectedCharset();
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check(cs != null, "cs != null");
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check(! cs.newDecoder().isAutoDetecting(), "isAutodetecting()");
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return cs.name();
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}
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public static void main(String[] argv) throws Exception {
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//----------------------------------------------------------------
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// Used to throw BufferOverflowException
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//----------------------------------------------------------------
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out.println(new String(new byte[] {0x61}, "JISAutoDetect"));
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//----------------------------------------------------------------
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// InputStreamReader(...JISAutoDetect) used to infloop
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//----------------------------------------------------------------
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{
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byte[] bytes = "ABCD\n".getBytes();
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ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
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InputStreamReader isr = new InputStreamReader(bais, "JISAutoDetect");
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BufferedReader reader = new BufferedReader(isr);
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check (reader.readLine().equals("ABCD"), "first read gets text");
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// used to return "ABCD" on second and subsequent reads
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check (reader.readLine() == null, "second read gets null");
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}
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//----------------------------------------------------------------
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// Check all Japanese chars for sanity
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//----------------------------------------------------------------
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String SJIS = SJISName();
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String EUCJ = EUCJName();
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out.printf("SJIS charset is %s%n", SJIS);
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out.printf("EUCJ charset is %s%n", EUCJ);
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int cnt2022 = 0;
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int cnteucj = 0;
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int cntsjis = 0;
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int cntBAD = 0;
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for (char c = '\u0000'; c < '\uffff'; c++) {
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if (c == '\u001b' || // ESC
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c == '\u2014') // Em-Dash?
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continue;
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String s = new String (new char[] {c});
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//----------------------------------------------------------------
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// JISAutoDetect can handle all chars that EUC-JP can,
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// unless there is an ambiguity with SJIS.
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//----------------------------------------------------------------
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byte[] beucj = s.getBytes(EUCJ);
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String seucj = new String(beucj, EUCJ);
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if (seucj.equals(s)) {
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cnteucj++;
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String sauto = new String(beucj, "JISAutoDetect");
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if (! sauto.equals(seucj)) {
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cntBAD++;
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String ssjis = new String(beucj, SJIS);
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if (! sauto.equals(ssjis)) {
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fail("Autodetection agrees with neither EUC nor SJIS");
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}
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}
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} else
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continue; // Optimization
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//----------------------------------------------------------------
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// JISAutoDetect can handle all chars that ISO-2022-JP can.
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//----------------------------------------------------------------
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byte[] b2022 = s.getBytes("ISO-2022-JP");
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if (new String(b2022, "ISO-2022-JP").equals(s)) {
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cnt2022++;
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check(new String(b2022,"JISAutoDetect").equals(s),
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"ISO2022 autodetection");
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}
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//----------------------------------------------------------------
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// JISAutoDetect can handle almost all chars that SJIS can.
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//----------------------------------------------------------------
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byte[] bsjis = s.getBytes(SJIS);
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if (new String(bsjis, SJIS).equals(s)) {
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cntsjis++;
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check(new String(bsjis,"JISAutoDetect").equals(s),
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"SJIS autodetection");
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}
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}
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out.printf("There are %d ISO-2022-JP-encodable characters.%n", cnt2022);
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out.printf("There are %d SJIS-encodable characters.%n", cntsjis);
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out.printf("There are %d EUC-JP-encodable characters.%n", cnteucj);
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out.printf("There are %d characters that are " +
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"misdetected as SJIS after being EUC-encoded.%n", cntBAD);
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//----------------------------------------------------------------
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// tests for specific byte sequences
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//----------------------------------------------------------------
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test("ISO-2022-JP", new byte[] {'A', 'B', 'C'});
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test("EUC-JP", new byte[] {'A', 'B', 'C'});
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test("SJIS", new byte[] {'A', 'B', 'C'});
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test("SJIS",
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new byte[] { 'C', 'o', 'p', 'y', 'r', 'i', 'g', 'h', 't',
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' ', (byte)0xa9, ' ', '1', '9', '9', '8' });
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test("SJIS",
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new byte[] { (byte)0xbb, (byte)0xdd, (byte)0xcf, (byte)0xb2,
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(byte)0xb8, (byte)0xdb, (byte)0xbc, (byte)0xbd,
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(byte)0xc3, (byte)0xd1, (byte)0xbd, (byte)0xde,
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(byte)0x82, (byte)0xc5, (byte)0x82, (byte)0xb7 });
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test("EUC-JP",
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new byte[] { (byte)0xa4, (byte)0xd2, (byte)0xa4, (byte)0xe9,
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(byte)0xa4, (byte)0xac, (byte)0xa4, (byte)0xca });
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test("SJIS",
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new byte[] { (byte)0xbb, (byte)0xdd, (byte)0xcf, (byte)0xb2,
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(byte)0xb8, (byte)0xdb, (byte)0xbc, (byte)0xbd,
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(byte)0xc3, (byte)0xd1, (byte)0xbd, (byte)0xde});
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test("SJIS",
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new byte[] { (byte)0xbb, (byte)0xdd, (byte)0xcf, (byte)0xb2,
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(byte)0xb8, (byte)0xdb, (byte)0xbc, (byte)0xbd,
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(byte)0xc3, (byte)0xd1, (byte)0xbd });
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test("SJIS",
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new byte[] { (byte)0x8f, (byte)0xa1, (byte)0xaa });
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test("EUC-JP",
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new byte[] { (byte)0x8f, (byte)0xc5, (byte)0xe0, (byte)0x20});
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test("EUC-JP",
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new byte[] { (byte)0xbb, (byte)0xdd, (byte)0xcf, (byte)0xb2,
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(byte)0xb8, (byte)0xdb, (byte)0xbc, (byte)0xbd,
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(byte)0xc3, (byte)0xd1, (byte)0xbd, (byte)0xde,
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(byte)0xa4, (byte)0xc7, (byte)0xa4, (byte)0xb9 });
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test("ISO-2022-JP",
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new byte[] { 0x1b, '$', 'B', '#', '4', '$', '5', 0x1b, '(', 'B' });
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//----------------------------------------------------------------
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// Check handling of ambiguous end-of-input in middle of first char
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//----------------------------------------------------------------
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{
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CharsetDecoder dc = Charset.forName("x-JISAutoDetect").newDecoder();
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ByteBuffer bb = ByteBuffer.allocate(128);
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CharBuffer cb = CharBuffer.allocate(128);
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bb.put((byte)'A').put((byte)0x8f);
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bb.flip();
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CoderResult res = dc.decode(bb,cb,false);
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check(res.isUnderflow(), "isUnderflow");
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check(bb.position() == 1, "bb.position()");
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check(cb.position() == 1, "cb.position()");
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res = dc.decode(bb,cb,false);
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check(res.isUnderflow(), "isUnderflow");
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check(bb.position() == 1, "bb.position()");
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check(cb.position() == 1, "cb.position()");
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bb.compact();
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bb.put((byte)0xa1);
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bb.flip();
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res = dc.decode(bb,cb,true);
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check(res.isUnderflow(), "isUnderflow");
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check(bb.position() == 2, "bb.position()");
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check(cb.position() == 2, "cb.position()");
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}
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// test #8022224
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Charset cs = Charset.forName("x-JISAutoDetect");
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ByteBuffer bb = ByteBuffer.wrap(new byte[] { 'a', 0x1b, 0x24, 0x40 });
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CharBuffer cb = CharBuffer.wrap(new char[10]);
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CoderResult cr = cs.newDecoder().decode(bb, cb, false);
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bb.rewind();
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cb.clear().limit(1);
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check(cr == cs.newDecoder().decode(bb, cb, false), "#8022224");
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if (failures > 0)
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throw new RuntimeException(failures + " tests failed");
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}
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static void checkCoderResult(CoderResult result) {
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check(result.isUnderflow(),
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"Unexpected coder result: " + result);
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}
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static void test(String expectedCharset, byte[] input) throws Exception {
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Charset cs = Charset.forName("x-JISAutoDetect");
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CharsetDecoder autoDetect = cs.newDecoder();
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Charset cs2 = Charset.forName(expectedCharset);
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CharsetDecoder decoder = cs2.newDecoder();
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ByteBuffer bb = ByteBuffer.allocate(128);
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CharBuffer charOutput = CharBuffer.allocate(128);
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CharBuffer charExpected = CharBuffer.allocate(128);
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bb.put(input);
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bb.flip();
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bb.mark();
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CoderResult result = autoDetect.decode(bb, charOutput, true);
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checkCoderResult(result);
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charOutput.flip();
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String actual = charOutput.toString();
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bb.reset();
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result = decoder.decode(bb, charExpected, true);
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checkCoderResult(result);
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charExpected.flip();
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String expected = charExpected.toString();
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check(actual.equals(expected),
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String.format("actual=%s expected=%s", actual, expected));
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}
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}
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