/*
* Copyright 2015 MovingBlocks
*
* 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 org.terasology.util.io;
import com.google.common.base.Preconditions;
import com.google.common.collect.Sets;
import com.google.common.io.Files;
import org.terasology.util.Varargs;
import java.nio.file.Path;
import java.nio.file.PathMatcher;
import java.util.Collection;
import java.util.Set;
/**
* A PathMatcher that matches files ending with one of a set of file extensions.
*
* @author Immortius
*/
public class FileExtensionPathMatcher implements PathMatcher {
private final Set<String> extensions;
/**
* @param extension One of the extensions that a file must have to match
* @param extensions Additional extensions that files must have to match
*/
public FileExtensionPathMatcher(String extension, String... extensions) {
this(Varargs.combineToSet(extension, extensions));
}
/**
* @param extensions The extensions that files must have to match. Must not be empty
*/
public FileExtensionPathMatcher(Collection<String> extensions) {
Preconditions.checkNotNull(extensions);
Preconditions.checkArgument(!extensions.isEmpty(), "At least one extension must be provided");
this.extensions = Sets.newHashSet(extensions);
}
@Override
public boolean matches(Path path) {
Path fileName = path.getFileName();
if (fileName != null) {
return extensions.contains(Files.getFileExtension(fileName.toString()));
}
return false;
}
}