META-INF.modules.java.base.classes.sun.util.PropertyResourceBundleCharset Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of java.base Show documentation
Show all versions of java.base Show documentation
Bytecoder java.base Module
/*
* 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);
}
}
}