如何使用 Nodejs 将文件夹中的数据作为文件名写入 CSV 文件

Question

Anty body did write file names in a folder to the CSV file using javascript

my folder structure is

Data
 +IMG
    +test
       -1.png
       -2.png
    +train
       -3.png
       -4.png

an output CSV file will be like this

Data/IMG/test/1.png     Data/IMG/train/3.png
Data/IMG/test/2.png     Data/IMG/train/4.png

Answer 1

You just need to loop through all folders and find all files. You can refer to this answer to do this.

when you are finding all files' paths, you can write these paths in a string for the csv file:

const fs = require('fs');
const path = require('path');

let csvStr = "";

async function loop(startPath) {
    // Our starting point
    try {
        // Get the files as an array
        const files = await fs.promises.readdir(startPath);

        // Loop them all with the new for...of
        for (const file of files) {
            // Get the full paths
            const currentPath = path.join(startPath, file);

            // Stat the file to see if we have a file or dir
            const stat = await fs.promises.stat(currentPath);

            if (stat.isFile()) {
                console.log("'%s' is a file.", currentPath);
                // put the file into csv string
                csvStr += currentPath + ", "
            } else if (stat.isDirectory()) {
                console.log("'%s' is a directory.", currentPath);
                // enter the dictionary and loop
                await loop(currentPath);
            }

        } // End for...of
    } catch (e) {
        // Catch anything bad that happens
        console.error("We've thrown! Whoops!", e);
    }

}

// Make an async function that gets executed immediately
(async () => {
    // start loop from the path where you run node
    await loop("./");

    fs.writeFileSync("your.csv", csvStr);
})();