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Commit 902a833

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test files.walkFileTree
1 parent 32c5335 commit 902a833

File tree

2 files changed

+136
-2
lines changed

2 files changed

+136
-2
lines changed

‎javademo/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>org.javademo</groupId>
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<version>25.1-jre</version>
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</dependency>
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<!-- jgit -->
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<dependency>
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<groupId>org.eclipse.jgit</groupId>
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<artifactId>org.eclipse.jgit</artifactId>
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<version>5.3.0.201903130848-r</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/org.mockito/mockito-core -->
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<dependency>
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<groupId>org.mockito</groupId>
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package nio.file;
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import java.io.File;
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import java.io.IOException;
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import java.nio.file.FileVisitResult;
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import java.nio.file.FileVisitor;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.nio.file.attribute.BasicFileAttributes;
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import java.util.function.Consumer;
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import metrics.Temp;
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import org.eclipse.jgit.api.Git;
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import org.eclipse.jgit.errors.RepositoryNotFoundException;
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import org.junit.Test;
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/**
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* @GitHub : https://github.com/zacscoding
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*/
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public class FilesBasicTest {
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@Test
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public void walkFileTree() throws IOException {
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/*
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D:\temp
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-- AA
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-- AAA
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-- a.txt
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-- BB
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-- BBB
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--- BBBB
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--- bbb.txt
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*/
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/*
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preVisitDirectory :: file:///D:/temp/
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preVisitDirectory :: file:///D:/temp/AA/
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visitFile :: file:///D:/temp/AA/a.txt
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preVisitDirectory :: file:///D:/temp/AA/AAA/
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postVisitDirectory :: file:///D:/temp/AA/AAA/
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postVisitDirectory :: file:///D:/temp/AA/
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preVisitDirectory :: file:///D:/temp/BB/
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preVisitDirectory :: file:///D:/temp/BB/BBB/
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visitFile :: file:///D:/temp/BB/BBB/bbb.txt
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preVisitDirectory :: file:///D:/temp/BB/BBB/BBBB/
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postVisitDirectory :: file:///D:/temp/BB/BBB/BBBB/
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postVisitDirectory :: file:///D:/temp/BB/BBB/
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postVisitDirectory :: file:///D:/temp/BB/
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postVisitDirectory :: file:///D:/temp/
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*/
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Path root = new File("D:\\temp").toPath();
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Files.walkFileTree(root, new FileVisitor<Path>() {
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@Override
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public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
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return FileVisitResult.CONTINUE;
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}
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@Override
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public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
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System.out.println("visitFile :: " + file.toUri().toString());
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return FileVisitResult.CONTINUE;
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}
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@Override
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public FileVisitResult visitFileFailed(Path file, IOException exc) throws IOException {
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System.out.println("visitFileFailed :: " + file.toUri().toString());
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return FileVisitResult.CONTINUE;
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}
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@Override
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public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
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System.out.println("postVisitDirectory :: " + dir.toUri().toString());
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return FileVisitResult.CONTINUE;
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}
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});
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}
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@Test
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public void findGitDirectory() throws IOException {
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Path start = Paths.get("C:\\git\\zaccoding");
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Consumer<Path> gitDirectoryConsumer = path -> System.out.println("Found git dir : " + path.toString());
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GitDirectoryVisitor visitor = new GitDirectoryVisitor(start, gitDirectoryConsumer);
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Files.walkFileTree(start, visitor);
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}
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private static class GitDirectoryVisitor implements FileVisitor<Path> {
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private Path root;
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private Consumer<Path> gitDirectoryConsumer;
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public GitDirectoryVisitor(Path root, Consumer<Path> gitDirectoryConsumer) {
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this.root = root;
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this.gitDirectoryConsumer = gitDirectoryConsumer;
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}
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@Override
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public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
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if (root == dir) {
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return FileVisitResult.CONTINUE;
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}
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try (Git git = Git.open(dir.toFile())) {
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gitDirectoryConsumer.accept(dir);
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return FileVisitResult.SKIP_SUBTREE;
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} catch (RepositoryNotFoundException e) {
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return FileVisitResult.CONTINUE;
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} catch (Exception e) {
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return FileVisitResult.CONTINUE;
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}
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}
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@Override
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public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
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return FileVisitResult.CONTINUE;
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}
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@Override
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public FileVisitResult visitFileFailed(Path file, IOException exc) throws IOException {
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return FileVisitResult.CONTINUE;
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}
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@Override
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public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
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return FileVisitResult.CONTINUE;
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}
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}
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}

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