How to extract a single file from a large ZIP archive

Question

How to extract one file from zipped directory? Zlib doesn't have any file browsing features, neither does extract-zip So I don't know what to use.

Answer 1

You can use EvanOxfeld/node-unzip parse zip file contents:

var fs = require('fs')
var unzip = require('unzip')
var path = require('path')
var mkdir = require('mkdirp')

fs.createReadStream('./archive.zip')
  .pipe(unzip.Parse())
  .on('entry', function (entry) {

    var fileName = entry.path
    var type = entry.type

    if (type==='File' && fileName === 'dir/fileInsideDir.txt') {

      var fullPath = __dirname + '/output/' + path.dirname( fileName )
      fileName = path.basename( fileName )
      mkdir.sync(fullPath)
      entry.pipe(fs.createWriteStream( fullPath + '/' + fileName ))

    } else {
      entry.autodrain()
    }

  })

[ Example archive ]