MimeTypeHelper.java

package eu.europeana.cloud.util;


import org.apache.tika.config.TikaConfig;
import org.apache.tika.metadata.Metadata;
import org.apache.tika.mime.MediaType;
import org.apache.tika.mime.MimeType;
import org.apache.tika.mime.MimeTypeException;

import java.io.IOException;
import java.io.InputStream;

/**
 * Utility for extension-related services
 */
public class MimeTypeHelper {
    private static final TikaConfig CONFIG = TikaConfig.getDefaultConfig();

    /**
     * Gets the extension based on a media type
     *
     * @param mediaType MediaType
     * @return the extension .
     * @throws MimeTypeException thrown if MimeType wasn't detected
     */
    public static String getExtension(MediaType mediaType) throws MimeTypeException {
        MimeType mimeType = CONFIG.getMimeRepository().forName(mediaType.toString());
        return mimeType.getExtension();

    }

    /**
     * Gets Media Type based on a stream
     *
     * @param stream
     * @return the mediaType .
     * @throws MimeTypeException thrown if MimeType wasn't detected
     * @throws IOException
     */
    public static MediaType getMediaTypeFromStream(InputStream stream) throws MimeTypeException, IOException {
        return CONFIG.getMimeRepository().detect(stream, new Metadata());

    }

}