| /* |
| * 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); |
| } |
| |
| } |