CODEWITHSUNDEEP
javascriptnode.jsarchiverarwinrar
Florian Ludewig
Florian Ludewig

Reputation: 6002

Read All File Names from a .rar File in Node.js

I have an express route, that uploads files, that are sent to the server via formData.

Supposing the file is a .rar file, my goal is to extract all file names, that are inside this archive or it's subfolders.

This is how my express route currently looks like:

module.exports = async (req, res) => {
    try {
        const busboy = new Busboy({ headers: req.headers })
        busboy.on('finish', async () => {
            const fileData = req.files.file
            console.log(fileData)
            // upload file
            // send back response
        })
        req.pipe(busboy)
    } catch (err) { return response.error(req, res, err, 'uploadProductFile_unexpected') }
}

Here is what the console.log(fileData) looks like:

{
    data:
        <Buffer 52 61 72 21 1a 07 01 00 56 0c 22 93 0c 01 05 08 00 07 01 01 8d d6 8d 80 00 85 76 33 e4 49 02 03 0b fc d4 0d 04 b1 8c 1e 20 bc 86 da 2e 80 13
    00 2b 66 ... >,
    name: 'filename.rar',
    encoding: '7bit',
    mimetype: 'application/octet-stream',
    truncated: false,
    size: 224136
}

Inside filename.rar are a few files like texture.png and info.txt. And my goal is to fetch those names.

Upvotes: 2

Views: 1915

Answers (4)

Alireza
Alireza

Reputation: 104870

Steps could be:

npm install -g node-rar

or 

npm install node-rar

and

node-rar --version

in your file:

var rar = require('node-rar');

/// list archive entries
rar.list('path/to/file.rar', 'optional password');
// => [entries]

/// test archive entries
rar.test('path/to/file.rar', 'dir/to/test', 'optional password');
// => [entries]

/// extract archive entries
rar.extract('path/to/file.rar', 'dir/to/extract', 'optional password');
// => [entries]

Upvotes: 0

Florian Ludewig
Florian Ludewig

Reputation: 6002

I eventually found an solution using node-unrar-js:

const unrar = require('node-unrar-js')

module.exports = async (req, res) => {
    try {
        const busboy = new Busboy({ headers: req.headers })
        busboy.on('finish', async () => {

            const fileData = req.files.file
            const extractor = unrar.createExtractorFromData(fileData.data)
            const list = extractor.getFileList()
            if (list[0].state === 'SUCCESS')
                //  Here I have the file names
                const fileNmes = list[1].fileHeaders.map(header => header.name)
                // ...

        })
        req.pipe(busboy)
    } catch (err) { return response.error(req, res, err, 'uploadProductFile_unexpected') }
}

Upvotes: 5

r0hitsharma
r0hitsharma

Reputation: 1762

You can use decompress which accepts Buffer as an argument:

const Busboy = require('busboy');
const decompress = require('decompress');

module.exports = async (req, res) => {
    try {
        const busboy = new Busboy({ headers: req.headers })
        busboy.on('finish', async () => {
            const fileData = req.files.file
            console.log(fileData)
            // upload file
            // send back response

            decompress(fileData, 'dist').then(files => {
                req.send(files.map(f => f.path))
            });
        })
        req.pipe(busboy)
    } catch (err) { return response.error(req, res, err, 'uploadProductFile_unexpected') }
}

Upvotes: 0

sausage
sausage

Reputation: 101

Use: npm i node-rar

const rar = require('node-rar')

rar.list('path/to/file.rar', 'optional password')

Reference: https://www.npmjs.com/package/node-rar

Upvotes: 0

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