How can I count the number of files in a directory using nodejs
with just plain JavaScript or packages? I want to do something like this:
How to count the n
Here the simple code,
import RNFS from 'react-native-fs';
RNFS.readDir(dirPath)
.then((result) => {
console.log(result.length);
});
Using fs, I found retrieving the directory file count to be straightforward.
const fs = require('fs');
const dir = './directory';
fs.readdir(dir, (err, files) => {
console.log(files.length);
});
const fs = require('fs')
const length = fs.readdirSync('/home/directory').length
const readdir = (path) => {
return new Promise((resolve, reject) => {
fs.readdir(path, (error, files) => {
error ? reject(error) : resolve(files);
});
});
};s
readdir("---path to directory---").then((files) => {
console.log(files.length);
});
Okay, I got a bash script like approach for this:
const shell = require('shelljs')
const path = require('path')
module.exports.count = () => shell.exec(`cd ${path.join('path', 'to', 'folder')} || exit; ls -d -- */ | grep 'page-*' | wc -l`, { silent:true }).output
That's it.
Alternative solution without external module, maybe not the most efficient code, but will do the trick without external dependency:
var fs = require('fs');
function sortDirectory(path, files, callback, i, dir) {
if (!i) {i = 0;} //Init
if (!dir) {dir = [];}
if(i < files.length) { //For all files
fs.lstat(path + '\\' + files[i], function (err, stat) { //Get stats of the file
if(err) {
console.log(err);
}
if(stat.isDirectory()) { //Check if directory
dir.push(files[i]); //If so, ad it to the list
}
sortDirectory(callback, i + 1, dir); //Iterate
});
} else {
callback(dir); //Once all files have been tested, return
}
}
function listDirectory(path, callback) {
fs.readdir(path, function (err, files) { //List all files in the target directory
if(err) {
callback(err); //Abort if error
} else {
sortDirectory(path, files, function (dir) { //Get only directory
callback(dir);
});
}
})
}
listDirectory('C:\\My\\Test\\Directory', function (dir) {
console.log('There is ' + dir.length + ' directories: ' + dir);
});