PngChunkText.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.imaging.formats.png.chunks;
import java.nio.charset.StandardCharsets;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.imaging.ImagingException;
import org.apache.commons.imaging.common.BinaryFunctions;
import org.apache.commons.imaging.formats.png.AbstractPngText;
public class PngChunkText extends AbstractPngTextChunk {
private static final Logger LOGGER = Logger.getLogger(PngChunkText.class.getName());
private final String keyword;
private final String text;
public PngChunkText(final int length, final int chunkType, final int crc, final byte[] bytes) throws ImagingException {
super(length, chunkType, crc, bytes);
final int index = BinaryFunctions.findNull(bytes, "PNG tEXt chunk keyword is not terminated.");
keyword = new String(bytes, 0, index, StandardCharsets.ISO_8859_1);
final int textLength = bytes.length - (index + 1);
text = new String(bytes, index + 1, textLength, StandardCharsets.ISO_8859_1);
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.finest("Keyword: " + keyword);
LOGGER.finest("Text: " + text);
}
}
@Override
public AbstractPngText getContents() {
return new AbstractPngText.Text(keyword, text);
}
/**
* @return Returns the keyword.
*/
@Override
public String getKeyword() {
return keyword;
}
/**
* @return Returns the text.
*/
@Override
public String getText() {
return text;
}
}