List files with antInclude

FileUtils.java

package org.tiqwab.util;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

import org.apache.commons.io.FilenameUtils;

public class FileUtils {
	
	private static final String PATH_SEPARATOR = "/";
	
	/**
	 * List files from path containing wild card such as '*' and '?' <br>
	 * For example, if there are three files, 'a/b/c/d.txt', 'a/b/d.txt', and 'a/b/c/d.bmp': <br>
	 * antInclude: 'a/b/c/*.txt' -> 'a/b/c/d.txt' <br>
	 * antInclude: 'a/b/c/?.*'   -> 'a/b/c/d.txt', 'a/b/c/d.bmp' <br>
	 * @param antInclude
	 * @return files matching the specified pattern
	 */
	public static File[] listFiles(String antInclude) {
		Objects.requireNonNull(antInclude, "antInclude must not be null");
		
		String includeNormalized = FilenameUtils.separatorsToUnix(antInclude);
		PathInfo pathInfo = separatePath(includeNormalized);
		
		return listFiles(new File(pathInfo.getPathToBaseDir()), pathInfo.getPattern());
	}
	
	private static File[] listFiles(File baseDir, String pattern) {
		List<File> fileList = new ArrayList<>();
		for (File file : baseDir.listFiles()) {
			if (file.isFile()) {
				if (FilenameUtils.wildcardMatchOnSystem(file.getName(), pattern)) {
					fileList.add(file);
				}
			}
		}
		return fileList.toArray(new File[0]);
	}
	
	private static PathInfo separatePath(String pattern) {
		int indexSep = pattern.lastIndexOf(PATH_SEPARATOR);
		return (indexSep < 0) 
				? new PathInfo(".", pattern) 
				: new PathInfo(pattern.substring(0, indexSep), pattern.substring(indexSep+1));
	}
	
	private static class PathInfo {
		private String pathToBaseDir;
		private String pattern;
		
		PathInfo(String pathToBaseDir, String pattern) {
			this.pathToBaseDir = pathToBaseDir;
			this.pattern = pattern;
		}
		
		public String getPathToBaseDir() {
			return this.pathToBaseDir;
		}
		
		public String getPattern() {
			return this.pattern;
		}
	}
	
}

Depends on commons-io