/*
 * Copyright 2012-2020 the original author or authors.
 *
 * 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
 *
 *      https://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.
 */

package org.springframework.boot.devtools.classpath;

import java.io.File;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.core.log.LogMessage;
import org.springframework.util.ResourceUtils;

Provides access to entries on the classpath that refer to directories.
Author:Phillip Webb
Since:2.3.0
/** * Provides access to entries on the classpath that refer to directories. * * @author Phillip Webb * @since 2.3.0 */
public class ClassPathDirectories implements Iterable<File> { private static final Log logger = LogFactory.getLog(ClassPathDirectories.class); private final List<File> directories = new ArrayList<>(); public ClassPathDirectories(URL[] urls) { if (urls != null) { addUrls(urls); } } private void addUrls(URL[] urls) { for (URL url : urls) { addUrl(url); } } private void addUrl(URL url) { if (url.getProtocol().equals("file") && url.getPath().endsWith("/")) { try { this.directories.add(ResourceUtils.getFile(url)); } catch (Exception ex) { logger.warn(LogMessage.format("Unable to get classpath URL %s", url)); logger.trace(LogMessage.format("Unable to get classpath URL %s", url), ex); } } } @Override public Iterator<File> iterator() { return Collections.unmodifiableList(this.directories).iterator(); } }