180 lines
6.9 KiB
Java
180 lines
6.9 KiB
Java
/*
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* Copyright (c) 1999, 2006, 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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/* @test
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* @bug 4085160 4139951 5005831
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* @summary Test that required character encodings are supported
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*/
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import java.io.InputStreamReader;
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import java.io.OutputStreamWriter;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.nio.charset.Charset;
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import java.nio.charset.UnsupportedCharsetException;
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public class Encodings {
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static boolean equals(byte[] a, byte[] b) {
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if (a.length != b.length) return false;
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for (int i = 0; i < a.length; i++)
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if (a[i] != b[i]) return false;
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return true;
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}
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static void go(String enc, String str, final byte[] bytes, boolean bidir)
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throws Exception
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{
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final Charset charset = Charset.forName(enc);
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/* String(byte[] bs, String enc) */
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if (!(new String(bytes, enc).equals(str)))
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throw new Exception(enc + ": String constructor failed");
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/* String(byte[] bs, Charset charset) */
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if (!(new String(bytes, charset).equals(str)))
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throw new Exception(charset + ": String constructor failed");
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/* String(byte[] bs, int off, int len, Charset charset) */
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String start = str.substring(0, 2);
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String end = str.substring(2);
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if (enc.equals("UTF-16BE") || enc.equals("UTF-16LE")) {
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if (!(new String(bytes, 0, 4, charset).equals(start)))
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throw new Exception(charset + ": String constructor failed");
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if (!(new String(bytes, 4, bytes.length - 4, charset).equals(end)))
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throw new Exception(charset + ": String constructor failed");
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} else if (enc.equals("UTF-16")) {
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if (!(new String(bytes, 0, 6, charset).equals(start)))
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throw new Exception(charset + ": String constructor failed");
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} else {
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if (!(new String(bytes, 0, 2, charset).equals(start)))
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throw new Exception(charset + ": String constructor failed");
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if (!(new String(bytes, 2, bytes.length - 2, charset).equals(end)))
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throw new Exception(charset + ": String constructor failed");
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}
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/* InputStreamReader */
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ByteArrayInputStream bi = new ByteArrayInputStream(bytes);
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InputStreamReader r = new InputStreamReader(bi, enc);
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String inEnc = r.getEncoding();
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int n = str.length();
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char[] cs = new char[n];
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for (int i = 0; i < n;) {
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int m;
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if ((m = r.read(cs, i, n - i)) < 0)
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throw new Exception(enc + ": EOF on InputStreamReader");
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i += m;
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}
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if (!(new String(cs).equals(str)))
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throw new Exception(enc + ": InputStreamReader failed");
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if (!bidir) {
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System.err.println(enc + " --> " + inEnc);
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return;
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}
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/* String.getBytes(String enc) */
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byte[] bs = str.getBytes(enc);
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if (!equals(bs, bytes))
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throw new Exception(enc + ": String.getBytes failed");
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/* String.getBytes(Charset charset) */
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bs = str.getBytes(charset);
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if (!equals(bs, bytes))
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throw new Exception(charset + ": String.getBytes failed");
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// Calls to String.getBytes(Charset) shouldn't automatically
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// use the cached thread-local encoder.
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if (charset.name().equals("UTF-16BE")) {
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String s = new String(bytes, charset);
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// Replace the thread-local encoder with this one.
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byte[] bb = s.getBytes(Charset.forName("UTF-16LE"));
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if (bytes.length != bb.length) {
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// Incidental test.
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throw new RuntimeException("unequal length: "
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+ bytes.length + " != "
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+ bb.length);
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} else {
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boolean diff = false;
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// Expect different byte[] between UTF-16LE and UTF-16BE
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// even though encoder was previously cached by last call
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// to getBytes().
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for (int i = 0; i < bytes.length; i++) {
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if (bytes[i] != bb[i])
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diff = true;
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}
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if (!diff)
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throw new RuntimeException("byte arrays equal");
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}
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}
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/* OutputStreamWriter */
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ByteArrayOutputStream bo = new ByteArrayOutputStream();
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OutputStreamWriter w = new OutputStreamWriter(bo, enc);
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String outEnc = w.getEncoding();
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w.write(str);
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w.close();
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bs = bo.toByteArray();
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if (!equals(bs, bytes))
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throw new Exception(enc + ": OutputStreamWriter failed");
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System.err.println(enc + " --> " + inEnc + " / " + outEnc);
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}
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static void go(String enc, String str, byte[] bytes) throws Exception {
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go(enc, str, bytes, true);
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}
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public static void main(String[] args) throws Exception {
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go("US-ASCII", "abc", new byte[] { 'a', 'b', 'c' });
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go("us-ascii", "abc", new byte[] { 'a', 'b', 'c' });
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go("ISO646-US", "abc", new byte[] { 'a', 'b', 'c' });
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go("ISO-8859-1", "ab\u00c7", new byte[] { 'a', 'b', (byte)'\u00c7' });
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go("UTF-8", "ab\u1e09",
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new byte[] { 'a', 'b',
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(byte)(0xe0 | (0x0f & (0x1e09 >> 12))),
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(byte)(0x80 | (0x3f & (0x1e09 >> 6))),
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(byte)(0x80 | (0x3f & 0x1e09)) });
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go("UTF-16BE", "ab\u1e09",
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new byte[] { 0, 'a', 0, 'b', 0x1e, 0x09 });
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go("UTF-16LE", "ab\u1e09",
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new byte[] { 'a', 0, 'b', 0, 0x09, 0x1e });
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/* UTF-16 accepts both byte orders on input but always uses big-endian
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* on output, so test all three cases
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*/
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go("UTF-16", "ab\u1e09",
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new byte[] { (byte)0xfe, (byte)0xff, 0, 'a', 0, 'b', 0x1e, 0x09 });
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go("UTF-16", "ab\u1e09",
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new byte[] { (byte)0xff, (byte)0xfe, 'a', 0, 'b', 0, 0x09, 0x1e },
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false);
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}
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}
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