| /* |
| * Copyright (c) 2015, 2016, 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. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * 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. |
| */ |
| |
| package sun.util; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.CharBuffer; |
| import java.nio.charset.Charset; |
| import java.nio.charset.CharsetDecoder; |
| import java.nio.charset.CharsetEncoder; |
| import java.nio.charset.CoderResult; |
| import java.nio.charset.CodingErrorAction; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Objects; |
| |
| /** |
| * A Charset implementation for reading PropertyResourceBundle, in order |
| * for loading properties files. This first tries to load the properties |
| * file with UTF-8 encoding). If it fails, then load the file with ISO-8859-1 |
| */ |
| public class PropertyResourceBundleCharset extends Charset { |
| |
| private boolean strictUTF8 = false; |
| |
| public PropertyResourceBundleCharset(boolean strictUTF8) { |
| this(PropertyResourceBundleCharset.class.getCanonicalName(), null); |
| this.strictUTF8 = strictUTF8; |
| } |
| |
| public PropertyResourceBundleCharset(String canonicalName, String[] aliases) { |
| super(canonicalName, aliases); |
| } |
| |
| @Override |
| public boolean contains(Charset cs) { |
| return false; |
| } |
| |
| @Override |
| public CharsetDecoder newDecoder() { |
| return new PropertiesFileDecoder(this, 1.0f, 1.0f); |
| } |
| |
| @Override |
| public CharsetEncoder newEncoder() { |
| throw new UnsupportedOperationException("Encoding is not supported"); |
| } |
| |
| private final class PropertiesFileDecoder extends CharsetDecoder { |
| |
| private CharsetDecoder cdUTF_8 = StandardCharsets.UTF_8.newDecoder() |
| .onMalformedInput(CodingErrorAction.REPORT) |
| .onUnmappableCharacter(CodingErrorAction.REPORT); |
| private CharsetDecoder cdISO_8859_1 = null; |
| |
| protected PropertiesFileDecoder(Charset cs, |
| float averageCharsPerByte, float maxCharsPerByte) { |
| super(cs, averageCharsPerByte, maxCharsPerByte); |
| } |
| |
| protected CoderResult decodeLoop(ByteBuffer in, CharBuffer out) { |
| if (Objects.nonNull(cdISO_8859_1)) { |
| return cdISO_8859_1.decode(in, out, false); |
| } |
| in.mark(); |
| out.mark(); |
| |
| CoderResult cr = cdUTF_8.decode(in, out, false); |
| if (cr.isUnderflow() || cr.isOverflow() || |
| PropertyResourceBundleCharset.this.strictUTF8) { |
| return cr; |
| } |
| |
| // Invalid or unmappable UTF-8 sequence detected. |
| // Switching to the ISO 8859-1 decorder. |
| assert cr.isMalformed() || cr.isUnmappable(); |
| in.reset(); |
| out.reset(); |
| cdISO_8859_1 = StandardCharsets.ISO_8859_1.newDecoder(); |
| return cdISO_8859_1.decode(in, out, false); |
| } |
| } |
| } |