EpubContentDescriber.java

/*******************************************************************************
 * Copyright (c) 2012 Torkild U. Resheim.
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: 
 *     Torkild U. Resheim - initial API and implementation
 *******************************************************************************/
package no.resheim.elibrarium.epub.core;

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

import org.eclipse.core.runtime.QualifiedName;
import org.eclipse.core.runtime.content.IContentDescriber;
import org.eclipse.core.runtime.content.IContentDescription;
import org.eclipse.mylyn.docs.epub.core.EPUB;

/**
 * Used to verify whether or not the given input stream is an EPUB that can be
 * opened by the EPUB reader.
 * 
 * @author Torkild U. Resheim
 */
public class EpubContentDescriber implements IContentDescriber {

	@Override
	public int describe(InputStream contents, IContentDescription description) throws IOException {
		if (EPUB.isEPUB(contents)) {
			return VALID;
		} else {
			return INVALID;
		}
	}

	@Override
	public QualifiedName[] getSupportedOptions() {
		return new QualifiedName[0];
	}

}