ResourceMapLister.java

/*******************************************************************************
 * Copyright (c) 2016
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *******************************************************************************/
package jsettlers.main.swing.resources;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.CodeSource;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import jsettlers.logic.map.loading.MapLoader;
import jsettlers.logic.map.loading.list.DirectoryMapLister;
import jsettlers.logic.map.loading.list.IMapLister;
import jsettlers.logic.map.loading.newmap.MapFileHeader;
import jsettlers.logic.map.loading.list.MapList.DefaultMapListFactory;
import jsettlers.logic.map.loading.list.MapList.ListedResourceMap;

public class ResourceMapLister implements IMapLister {

	public static ResourceMapLister getDefaultLister() {
		CodeSource source = ResourceMapLister.class.getProtectionDomain().getCodeSource();
		System.out.println("Source: " + source);
		if (source != null) {
			URL jar = source.getLocation();
			boolean hasJarExt = jar.getFile().endsWith(".jar");
			if (hasJarExt || "jar".equalsIgnoreCase(jar.getProtocol())) {
				return new ResourceMapLister(jar);
			}
		}
		return null;
	}

	private final URL jar;

	private ResourceMapLister(URL jar) {
		this.jar = jar;
	}

	@Override
	public void listMaps(IMapListerCallable callable) {
		try {
			ZipInputStream zip = new ZipInputStream(jar.openStream());
			while (true) {
				ZipEntry e = zip.getNextEntry();
				if (e == null) {
					break;
				}
				String path = "/" + e.getName();
				// System.out.println("Entry: " + path);
				if (path.startsWith("/jsettlers/resources/maps") && path.endsWith(MapLoader.MAP_EXTENSION)) {
					callable.foundMap(new ListedResourceMap(path));
				}
			}
		} catch (IOException e) {
			// currently silently ignored. TODO: Error management.
			System.out.println("Ignore map list error: " + e.getMessage());
		}
	}

	@Override
	public OutputStream getOutputStream(MapFileHeader header) throws IOException {
		throw new UnsupportedOperationException();
	}

}