/*
* Copyright 2002-2012 Drew Noakes
*
* Licensed 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.
*
* More information about this project is available at:
*
* http://drewnoakes.com/code/exif/
* http://code.google.com/p/metadata-extractor/
*/
package com.almalence.util.exifreader.metadata.jpeg;
import com.almalence.util.exifreader.lang.BufferBoundsException;
import com.almalence.util.exifreader.lang.BufferReader;
import com.almalence.util.exifreader.lang.annotations.NotNull;
import com.almalence.util.exifreader.metadata.Metadata;
import com.almalence.util.exifreader.metadata.MetadataReader;
/**
* Decodes the comment stored within Jpeg files, populating a <code>Metadata</code> object with tag values in a
* <code>JpegCommentDirectory</code>.
*
* @author Drew Noakes http://drewnoakes.com
*/
public class JpegCommentReader implements MetadataReader
{
/**
* Performs the Jpeg data extraction, adding found values to the specified
* instance of <code>Metadata</code>.
*/
public void extract(@NotNull final BufferReader reader, @NotNull Metadata metadata)
{
JpegCommentDirectory directory = metadata.getOrCreateDirectory(JpegCommentDirectory.class);
try {
directory.setString(JpegCommentDirectory.TAG_JPEG_COMMENT, reader.getString(0, (int)reader.getLength()));
} catch (BufferBoundsException e) {
directory.addError("Exception reading JPEG comment string");
}
}
}