/*

 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). 

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Symbian Foundation License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".

 * 

 * Initial Contributors:

 * Nokia Corporation - Initial contribution

 * 

 * Contributors:

 * 

 * Description: This file is part of com.nokia.tools.variant.media.ui component.

 */

package com.nokia.tools.variant.internal.media.ui;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.Enumeration;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;

import org.eclipse.core.runtime.QualifiedName;

import org.eclipse.core.runtime.content.IContentDescriber;

import org.eclipse.core.runtime.content.IContentDescription;

import com.nokia.tools.variant.common.core.utils.FileUtils;

import com.nokia.tools.variant.media.ui.MediaUIPlugin;

public class ZipDescriber implements IContentDescriber {

	public ZipDescriber() {

		super();

	}

	public int describe(InputStream contents, IContentDescription description)

			throws IOException {

		int counter = 0;

		long length = -1;

		File temp = File.createTempFile("tempzip", ".zip");

		try {

			FileOutputStream fos = new FileOutputStream(temp);

			try {

				length = FileUtils.copyStream(contents, fos);

			} finally {

				FileUtils.closeStream(fos);

			}

			ZipFile zis = new ZipFile(temp);

			Enumeration<? extends ZipEntry> en = zis.entries();

			while (en.hasMoreElements()) {

				ZipEntry zipEntry = en.nextElement();

				if (!zipEntry.isDirectory()) {

					counter++;

				}

			}

		} finally {

			temp.delete();

		}

		if (description != null) {

			description.setProperty(MediaUIPlugin.SIZE, length);

			description.setProperty(MediaUIPlugin.EMBEDDED_FILE_COUNT, counter);

		}

		return INDETERMINATE;

	}

	public QualifiedName[] getSupportedOptions() {

		return new QualifiedName[] { MediaUIPlugin.SIZE,

				MediaUIPlugin.EMBEDDED_FILE_COUNT };

	}

}