com.wavemaker.commons.util.FilePatternMatchVisitor Maven / Gradle / Ivy
/**
* Copyright (C) 2020 WaveMaker, Inc.
*
* 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.wavemaker.commons.util;
import java.nio.file.FileSystems;
import java.nio.file.FileVisitResult;
import java.nio.file.Path;
import java.nio.file.PathMatcher;
import java.nio.file.Paths;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import static java.nio.file.FileVisitResult.CONTINUE;
/**
* Created by kishorer on 9/5/16.
*/
public class FilePatternMatchVisitor extends SimpleFileVisitor {
private final PathMatcher matcher;
private List matchedPaths = new ArrayList<>();
private Path basePath;
public FilePatternMatchVisitor(String pattern, String basePath) {
matcher = FileSystems.getDefault().getPathMatcher("glob:" + pattern);
this.basePath = Paths.get(basePath);
}
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
addToListIfMatching(file);
return CONTINUE;
}
@Override
public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
addToListIfMatching(dir);
return CONTINUE;
}
public Collection getMatchedPaths() {
return matchedPaths;
}
private void addToListIfMatching(Path file) {
Path name = basePath.relativize(file);
if (name != null && matcher.matches(name)) {
matchedPaths.add(name);
}
}
}