Use different read-line library

lib/obj.js

@@ -1,8 +1,8 @@
 "use strict";
 var async = require('async');
+var byline = require('byline');
 var fs = require('fs-extra');
 var path = require('path');
-var readline = require('readline');
 var loadImage = require('./image');
 var Material = require('./mtl');
 var Cesium = require('cesium');
@@ -163,12 +163,8 @@ function processObj(objFile, info, materials, images, done) {
     // f vertex//normal vertex//normal vertex//normal ...
     var facePattern4 = /f( +(-?\d+)\/\/(-?\d+))( +(-?\d+)\/\/(-?\d+))( +(-?\d+)\/\/(-?\d+))( +(-?\d+)\/\/(-?\d+))?/;
 
-    var stream = fs.createReadStream(objFile, 'utf8');
-    var reader = readline.createInterface({
-        input : stream
-    });
-
-    reader.on('line', function(line) {
+    var stream = byline(fs.createReadStream(objFile, {encoding: 'utf8'}));
+    stream.on('data', function(line) {
         line = line.trim();
         var result;
         if ((line.length === 0) || (line.charAt(0) === '#')) {
@@ -224,7 +220,7 @@ function processObj(objFile, info, materials, images, done) {
         }
     });
 
-    reader.on('close', function() {
+    stream.on('end', function() {
         done({
             vertexCount : vertexCount,
             vertexArray : vertexArray,
@@ -301,12 +297,8 @@ function getObjInfo(objFile, inputPath, done) {
     var hasNormals = false;
     var hasUVs = false;
 
-    var stream = fs.createReadStream(objFile, 'utf8');
-    var reader = readline.createInterface({
-        input : stream
-    });
-
-    reader.on('line', function(line) {
+    var stream = byline(fs.createReadStream(objFile, {encoding: 'utf8'}));
+    stream.on('data', function(line) {
         if (!defined(mtlPath)) {
             var mtllibMatches = line.match(/^mtllib.*/gm);
             if (mtllibMatches !== null) {
@@ -331,7 +323,7 @@ function getObjInfo(objFile, inputPath, done) {
         }
     });
 
-    reader.on('close', function() {
+    stream.on('end', function() {
         if (!hasPositions) {
             throw new Error('Could not process OBJ file, no positions.');
         }

package.json

@@ -25,6 +25,7 @@
   },
   "dependencies": {
     "async": "^1.4.2",
+    "byline": "^4.2.1",
     "cesium": "^1.22.0",
     "fs-extra": "^0.30.0",
     "gltf-pipeline": "git://github.com/AnalyticalGraphicsInc/gltf-pipeline.git",