1 /* 2 * Copyright (c) 2010, 2017, 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 import java.io.InputStreamReader; 25 import java.io.PrintStream; 26 import java.nio.charset.Charset; 27 import java.nio.charset.UnsupportedCharsetException; 28 import java.util.Iterator; 29 import java.util.SortedMap; 30 31 public class CharsetTest { 32 33 private static PrintStream out = System.err; 34 private static final SortedMap available = Charset.availableCharsets(); 35 36 private static void fail(String csn, String msg) { 37 throw new RuntimeException(csn + ": " + msg); 38 } 39 40 private static void testPositive(String csn) { 41 if (!Charset.isSupported(csn)) 42 fail(csn, "Not supported"); 43 44 Charset cs = Charset.forName(csn); 45 out.println(csn + " --> " + cs.getClass().getName()); 46 out.println(" " + cs.name() + " " + cs.aliases()); 47 48 if (!available.containsKey(cs.name())) 49 fail(csn, "Not in available charsets: " + available.keySet()); 50 if (!((Charset)available.get(cs.name())).equals(cs)) 51 fail(csn, "Available charset != looked-up charset"); 52 53 if (csn.equalsIgnoreCase("FOO")) { 54 if (!(cs instanceof FooCharset)) 55 fail(csn, "instanceof failed"); 56 } 57 } 58 59 private static void testNegative(String csn) { 60 if (Charset.isSupported(csn)) 61 fail(csn, "Supported"); 62 if (available.containsKey(csn)) 63 fail(csn, "Available"); 64 try { 65 Charset.forName(csn); 66 } catch (UnsupportedCharsetException x) { 67 out.println(csn + " not supported, as expected"); 68 return; 69 } 70 fail(csn, "Lookup succeeded"); 71 } 72 73 public static void main(String [] args) { 74 75 out.println("Default: " 76 + new InputStreamReader(System.in).getEncoding()); 77 78 out.print("Available:"); 79 for (Iterator i = available.keySet().iterator(); i.hasNext();) 80 out.print(" " + (String)i.next()); 81 out.println(); 82 83 for (int i = 0; i < args.length; i++) { 84 String a = args[i]; 85 boolean not = a.startsWith("!"); 86 String csn = (not ? a.substring(1) : a); 87 if (not) 88 testNegative(csn); 89 else 90 testPositive(csn); 91 } 92 } 93 94 }