1/* 2 * Copyright (c) 2008, 2014, 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 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 5058133 6233345 6381699 6381702 6381705 6381706 27 * @summary Check that all one-char sequences can be encoded by all charsets 28 * @run main/timeout=1200 FindOneCharEncoderBugs 29 * @author Martin Buchholz 30 */ 31 32import java.util.*; 33import java.nio.*; 34import java.nio.charset.*; 35 36public class FindOneCharEncoderBugs { 37 final static String[] brokenCharsets = { 38 // Delete the following lines when these charsets are fixed! 39 "x-IBM970", 40 "x-COMPOUND_TEXT", // Direct buffers not supported 41 }; 42 43 private static boolean equals(byte[] ba, ByteBuffer bb) { 44 if (ba.length != bb.limit()) 45 return false; 46 for (int i = 0; i < ba.length; i++) 47 if (ba[i] != bb.get(i)) 48 return false; 49 return true; 50 } 51 52 private static String toString(byte[] bytes) { 53 final StringBuilder sb = new StringBuilder(); 54 for (byte b : bytes) { 55 if (sb.length() != 0) sb.append(' '); 56 sb.append(String.format("%02x", (int)b)); 57 } 58 return sb.toString(); 59 } 60 61 private static String toString(ByteBuffer bb) { 62 final StringBuilder sb = new StringBuilder(); 63 for (int i = 0; i < bb.limit(); i++) { 64 if (sb.length() != 0) sb.append(' '); 65 sb.append(String.format("%02x", (int)bb.get(i))); 66 } 67 return sb.toString(); 68 } 69 70 private static ByteBuffer convert(Charset cs, char c, CharBuffer cb) throws Throwable { 71 cb.clear(); cb.put(c); cb.flip(); 72 return cs.newEncoder() 73 .onUnmappableCharacter(CodingErrorAction.REPLACE) 74 .onMalformedInput(CodingErrorAction.REPLACE) 75 .encode(cb); 76 } 77 78 /** Returns a direct CharBuffer with the same capacity as ordinary CharBuffer ocb */ 79 private static CharBuffer directCharBuffer(CharBuffer ocb) { 80 final CharBuffer dcb = 81 ByteBuffer.allocateDirect(ocb.capacity() * Character.SIZE / Byte.SIZE) 82 .asCharBuffer(); 83 check(! ocb.isDirect()); 84 check( dcb.isDirect()); 85 equal(ocb.capacity(), dcb.capacity()); 86 return dcb; 87 } 88 89 private static void testChar(byte[] expected, CharBuffer cb, Charset cs, char c) { 90 try { 91 final ByteBuffer bb = convert(cs, c, cb); 92 if (! equals(expected, bb)) 93 fail("bytes differ charset=%s direct=%s char=\\u%04x%n%s%n%s", 94 cs, cb.isDirect(), (int)c, 95 toString(expected), toString(bb)); 96 } catch (Throwable t) { 97 System.out.printf("Unexpected exception charset=%s direct=%s char=\\u%04x%n", 98 cs, cb.isDirect(), (int)c); 99 unexpected(t); 100 failed++; 101 } 102 } 103 104 private static void testCharset(Charset cs) throws Throwable { 105 if (! cs.canEncode()) 106 return; 107 108 final String csn = cs.name(); 109 110 for (String n : brokenCharsets) 111 if (csn.equals(n)) { 112 System.out.printf("Skipping possibly broken charset %s%n", csn); 113 return; 114 } 115 System.out.println(csn); 116 117 final char[] theChar = new char[1]; 118 final CharBuffer ocb = CharBuffer.allocate(1); 119 final CharBuffer dcb = directCharBuffer(ocb); 120 final int maxFailuresPerCharset = 5; 121 final int failed0 = failed; 122 123 for (char c = '\u0000'; 124 (c+1 != 0x10000) && (failed - failed0 < maxFailuresPerCharset); 125 c++) { 126 theChar[0] = c; 127 byte[] bytes = new String(theChar).getBytes(csn); 128 if (bytes.length == 0) 129 fail("Empty output?! charset=%s char=\\u%04x", cs, (int)c); 130 testChar(bytes, ocb, cs, c); 131 testChar(bytes, dcb, cs, c); 132 } 133 } 134 135 private static void realMain(String[] args) { 136 for (Charset cs : Charset.availableCharsets().values()) { 137 try { testCharset(cs); } 138 catch (Throwable t) { unexpected(t); } 139 } 140 } 141 142 //--------------------- Infrastructure --------------------------- 143 static volatile int passed = 0, failed = 0; 144 static void pass() {passed++;} 145 static void fail() {failed++; Thread.dumpStack();} 146 static void fail(String format, Object... args) { 147 System.out.println(String.format(format, args)); failed++;} 148 static void fail(String msg) {System.out.println(msg); fail();} 149 static void unexpected(Throwable t) {failed++; t.printStackTrace();} 150 static void check(boolean cond) {if (cond) pass(); else fail();} 151 static void equal(Object x, Object y) { 152 if (x == null ? y == null : x.equals(y)) pass(); 153 else fail(x + " not equal to " + y);} 154 public static void main(String[] args) throws Throwable { 155 try {realMain(args);} catch (Throwable t) {unexpected(t);} 156 System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); 157 if (failed > 0) throw new AssertionError("Some tests failed");} 158 private static abstract class CheckedThread extends Thread { 159 abstract void realRun() throws Throwable; 160 public void run() { 161 try {realRun();} catch (Throwable t) {unexpected(t);}}} 162} 163