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package chapter14;

import java.io.IOException;

import java.nio.file.*;

import java.nio.file.attribute.BasicFileAttributes;

import static java.lang.System.out;

import static java.nio.file.FileVisitResult.CONTINUE;

public class GlobVisitor extends SimpleFileVisitor<Path> {

private final PathMatcher matcher;

public GlobVisitor(String glob) {

matcher = FileSystems.getDefault().getPathMatcher("glob:" + glob);

}

@Override

public FileVisitResult preVisitDirectory(Path path, BasicFileAttributes attrs) throws IOException {

return CONTINUE;

}

@Override

public FileVisitResult visitFile(Path path, BasicFileAttributes attrs) throws IOException {

visitPath(path);

return CONTINUE;

}

@Override

public FileVisitResult visitFileFailed(Path path, IOException exc) {

return CONTINUE;

}

private void visitPath(Path visitPath) {

Path name = visitPath.getFileName();

if (name != null && matcher.matches(name)) {

out.println(visitPath);

}

}

}