54 lines
1.9 KiB
Java
54 lines
1.9 KiB
Java
/*
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* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.sufficientlysecure.keychain.util;
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import org.sufficientlysecure.keychain.LibConstants;
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import java.nio.ByteBuffer;
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import java.nio.charset.CharacterCodingException;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetDecoder;
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import java.nio.charset.CodingErrorAction;
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public class Utf8Util {
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public static boolean isValidUTF8(byte[] input) {
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CharsetDecoder cs = Charset.forName("UTF-8").newDecoder();
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try {
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cs.decode(ByteBuffer.wrap(input));
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return true;
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} catch (CharacterCodingException e) {
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return false;
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}
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}
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public static String fromUTF8ByteArrayReplaceBadEncoding(byte[] input) {
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final CharsetDecoder charsetDecoder = Charset.forName("UTF-8").newDecoder();
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charsetDecoder.onMalformedInput(CodingErrorAction.REPLACE);
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charsetDecoder.onUnmappableCharacter(CodingErrorAction.REPLACE);
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try {
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return charsetDecoder.decode(ByteBuffer.wrap(input)).toString();
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} catch (CharacterCodingException e) {
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LibLog.e(LibConstants.TAG, "Decoding failed!", e);
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return charsetDecoder.replacement();
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}
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}
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}
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