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javascript - 仅使用 NodeJS 递归地列出路径中的目录

问题描述

我正在尝试一种优雅的方式来递归地列出其中的所有目录和文件。我想列出每个目录/子目录下的文件，以便它们可以区分。并且目录路径必须由用户提供。我的努力如下，代码是完全可重现的，但我不断得到空目录并且文件被多次列出。有什么更好的方法来完成这里的列表？

//server.js
"use strict";
const fs = require("fs");
const rlp = require("readline");
const path = require("path");
const filesReadService = require("./filesReadService");
const handleFolders = require("./handleFolders");
//   var basePath = "C:\\Users\\My Computer\\Videos\\Captures";
const rl = rlp.createInterface({
  input: process.stdin,
  output: process.stdout
});

function directoryInput() {
  return new Promise((resolve, reject) => {
    rl.question("Please enter a valid directory: ", input => resolve(input));
  });
}

directoryInput().then(async userInput => {
  rl.close();
  let filesAndFolders = await handleFolders(userInput);
  await filesReadService(userInput, filesAndFolders);
});

...

//handleFolders.js
const fs = require("fs");

const handleFolders = (directory, isRecursive) => {
  return new Promise((resolve, reject) => {
    fs.readdir(directory, (err, files) => {
      if (err) {
        reject(err);
        return;
      }
      resolve(files);
    });
  });
};

module.exports = handleFolders;

...

//filesReadService.js
"use strict";
const fs = require("fs");
const path = require("path");
const handleFolders = require("./handleFolders");

const filesReadService = async (directoryPath, files) => {
  let fullPath;
  let obj = {};
  var promises = files.map(file => {
    fullPath = path.join(directoryPath, file);
    return new Promise((resolve, reject) => {
      fs.stat(fullPath, (err, stat) => {
        if (err) {
          reject(err);
          return;
        }
        if (stat.isFile()) {
          obj = {
            file,
            isFile: true
          };
        } else if (stat.isDirectory()) {
          obj = {
            file,
            isFolder: true
          };
        }

        resolve(obj);
      });
    });
  });

  Promise.all(promises).then(
    values => {
      console.log("The files in this directory:");
      values
        .filter(value => value.isFile)
        .forEach(value => console.log(value.file));
      console.log("\nThe folders in this directory:");

      values
        .filter(value => value.isFolder === true)
        .forEach(async value => {
          let folderPath = path.join(directoryPath, value.file);
          let foldersAndFiles = await handleFolders(folderPath, true);
          console.log(value.file, ":\t", foldersAndFiles);
          await filesReadService(folderPath, foldersAndFiles);
        });
    },
    err => {
      console.log(err);
    }
  );
};

module.exports = filesReadService;

标签： javascriptnode.jsecmascript-6es6-promisefs

解决方案

const fs = require("fs"), path = require("path");
function recursivelyListDir(dir, callback) {
  fs.readdirSync(dir).forEach(f => {
    let dirPath = path.join(dir, f);
    let isDirectory = fs.statSync(dirPath).isDirectory();
    isDirectory
      ? recursivelyListDir(dirPath, callback)
      : callback(path.join(dir, f));
  });
}

// Function Usage.

recursivelyListDir(__dirname, function(filePath) {
  const fileContents = fs.readFileSync(filePath, "utf8");
  console.log(filePath);
});

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