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/*
* Copyright (c) 2008, 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 5066863 5066867 5066874 5066879 5066884 5066887 5065777 6730652
@summary canEncode() false iff encode() throws CharacterCodingException
@run main/timeout=1200 FindCanEncodeBugs
@author Martin Buchholz
*/
import java.util.*;
import java.nio.charset.*;
import java.nio.*;
public class FindCanEncodeBugs {
static boolean encodable1(CharsetEncoder enc, char c) {
enc.reset();
return enc.canEncode(c);
}
static boolean encodable2(CharsetEncoder enc, char c) {
enc.reset();
try { enc.encode(CharBuffer.wrap(new char[]{c})); return true; }
catch (CharacterCodingException e) { return false; }
}
public static void main(String[] args) throws Exception {
int failures = 0;
for (Map.Entry<String,Charset> e
: Charset.availableCharsets().entrySet()) {
String csn = e.getKey();
Charset cs = e.getValue();
if (! cs.canEncode() || csn.matches("x-COMPOUND_TEXT"))
continue;
//System.out.println(csn);
CharsetEncoder enc = cs.newEncoder();
for (int i = Character.MIN_VALUE; i <= Character.MAX_VALUE; i++) {
boolean encodable1 = encodable1(enc, (char)i);
boolean encodable2 = encodable2(enc, (char)i);
if (encodable1 != encodable2) {
int start = i;
int end = i;
for (int j = i;
j <= '\uffff' &&
encodable1(enc, (char)j) == encodable1 &&
encodable2(enc, (char)j) == encodable2;
j++)
end = j;
System.out.printf("charset=%-18s canEncode=%-5b ",
csn, encodable1);
if (start == end)
System.out.printf("\'\\u%04x\'%n", start);
else
System.out.printf("\'\\u%04x\' - \'\\u%04x\'%n",
start, end);
i = end;
failures++;
}
}
}
if (failures > 0)
throw new Exception(failures + " failures");
}
}
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