Node.js Download File Using Content Disposition as Filename

Question

I\'m using the Request module to download files, but I\'m not quite sure how to pipe the response to an output stream when the filename must come from the \'Content-Disposition\

Answer 1

Question has been around a while, but I today faced the same problem and solved it differently:

var Request = require( 'request' ),
    Fs = require( 'fs' );

// RegExp to extract the filename from Content-Disposition
var regexp = /filename=\"(.*)\"/gi;

// initiate the download
var req = Request.get( 'url.to/somewhere' )
                 .on( 'response', function( res ){

                    // extract filename
                    var filename = regexp.exec( res.headers['content-disposition'] )[1];

                    // create file write stream
                    var fws = Fs.createWriteStream( '/some/path/' + filename );

                    // setup piping
                    res.pipe( fws );

                    res.on( 'end', function(){
                      // go on with processing
                    });
                 });