Getting actual downloaded file name.

Author: NayanKhedkar

lib/RepositoryDownloader.js

@@ -20,13 +20,15 @@ RepositoryDownloader.prototype.fetch = function(destination) {
         download = require('download'),
         totalSize,
         receivedSize,
-        previousPercent = 0;
+        previousPercent = 0,
+        fileName = '';
 
     download(this.url, destination, {
         extract: true
     })
     .on('response', function (response) {
         totalSize = Number(response.headers['content-length']);
+        fileName = getFileName(response.headers['content-disposition']);
         receivedSize = 0;
     })
     .on('data', function(data) {
@@ -46,11 +48,23 @@ RepositoryDownloader.prototype.fetch = function(destination) {
         deferred.reject(err);
     })
     .then(function() {
-        deferred.resolve(destination);
+        deferred.resolve(fileName);
     });
 
     return deferred.promise;
 };
 
+function getFileName(disposition) {
+    var fileName = "";
+    if (disposition && disposition.indexOf('attachment') !== -1) {
+        var regex = /filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/;
+        var matches = regex.exec(disposition);
+        if (matches != null && matches[1]) {
+            fileName = matches[1].replace(/['"]/g, '');
+        }
+    }
+    return fileName;
+}
+
 module.exports = RepositoryDownloader;