com.github.triceo.robozonky.app.util.FileUtils Maven / Gradle / Ivy
/*
* Copyright 2017 Lukáš Petrovický
*
* 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
*
* http://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 com.github.triceo.robozonky.app.util;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Collection;
import java.util.Collections;
import java.util.Objects;
import java.util.Optional;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FileUtils {
private static final Logger LOGGER = LoggerFactory.getLogger(FileUtils.class);
public static Optional findFolder(final String folderName) {
final File rootFolder = new File(folderName);
if (rootFolder.isDirectory()) {
return Optional.of(rootFolder);
} else {
try {
return Files.walk(new File(System.getProperty("user.dir")).toPath())
.map(Path::toFile)
.filter(File::isDirectory)
.filter(f -> Objects.equals(f.getName(), folderName))
.findFirst();
} catch (final IOException ex) {
FileUtils.LOGGER.warn("Exception while walking file tree.", ex);
return Optional.empty();
}
}
}
public static Collection filesToUrls(final File... jars) {
if (jars == null) {
return Collections.emptySet();
}
return Stream.of(jars)
.map(f -> {
try {
return Optional.of(f.toURI().toURL());
} catch (final MalformedURLException e) {
FileUtils.LOGGER.debug("Skipping extension: '{}'.", f, e);
return Optional.empty();
}
}).flatMap(o -> o.map(u -> Stream.of((URL)u)).orElse(Stream.empty()))
.peek(u -> FileUtils.LOGGER.debug("Loading extension: '{}'.", u))
.collect(Collectors.toSet());
}
}