From 7b205fe6e9fc28b664ea2402931a15f0f8b2a9b1 Mon Sep 17 00:00:00 2001
From: Pieter Sheth-Voss <pieter@protobi.com>
Date: Wed, 13 Jun 2018 23:48:21 -0400
Subject: [PATCH] Add script to compile, add roundtrip test

---
 lib/bom.js            |  2 +-
 lib/processors.js     |  2 +-
 lib/xml2js.js         | 29 ++++++++++++++++++++++++-----
 package.json          |  1 +
 test/roundtrip.coffee | 38 ++++++++++++++++++++++++++++++++++++++
 5 files changed, 65 insertions(+), 7 deletions(-)
 create mode 100644 test/roundtrip.coffee

diff --git a/lib/bom.js b/lib/bom.js
index 0f6be316..210b7128 100644
--- a/lib/bom.js
+++ b/lib/bom.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 1.10.0
+// Generated by CoffeeScript 1.12.7
 (function() {
   "use strict";
   var xml2js;
diff --git a/lib/processors.js b/lib/processors.js
index 31ccde28..89aa85f2 100644
--- a/lib/processors.js
+++ b/lib/processors.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 1.10.0
+// Generated by CoffeeScript 1.12.7
 (function() {
   "use strict";
   var prefixMatch;
diff --git a/lib/xml2js.js b/lib/xml2js.js
index f9b403ba..df7b4bc1 100644
--- a/lib/xml2js.js
+++ b/lib/xml2js.js
@@ -1,4 +1,4 @@
-// Generated by CoffeeScript 1.10.0
+// Generated by CoffeeScript 1.12.7
 (function() {
   "use strict";
   var bom, builder, escapeCDATA, events, isEmpty, processName, processors, requiresCDATA, sax, setImmediate, wrapCDATA,
@@ -152,17 +152,36 @@
       }
       render = (function(_this) {
         return function(element, obj) {
-          var attr, child, entry, index, key, value;
+          var attr, child, entry, index, key, ref, value;
           if (typeof obj !== 'object') {
             if (_this.options.cdata && requiresCDATA(obj)) {
               element.raw(wrapCDATA(obj));
             } else {
               element.txt(obj);
             }
+          } else if ((_this.options.preserveChildrenOrder != null) && ((obj != null ? obj[_this.options.childkey] : void 0) != null)) {
+            ref = obj[_this.options.childkey];
+            for (index in ref) {
+              if (!hasProp.call(ref, index)) continue;
+              entry = ref[index];
+              key = entry["#name"];
+              if (typeof entry === 'string') {
+                if (_this.options.cdata && requiresCDATA(entry)) {
+                  element = element.ele(key).raw(wrapCDATA(entry)).up();
+                } else {
+                  element = element.ele(key, entry).up();
+                }
+              } else {
+                element = render(element.ele(key), entry).up();
+              }
+            }
           } else {
             for (key in obj) {
               if (!hasProp.call(obj, key)) continue;
               child = obj[key];
+              if ((_this.options.preserveChildrenOrder != null) && key === "#name") {
+                continue;
+              }
               if (key === attrkey) {
                 if (typeof child === "object") {
                   for (attr in child) {
@@ -254,7 +273,7 @@
     }
 
     Parser.prototype.processAsync = function() {
-      var chunk, err, error1;
+      var chunk, err;
       try {
         if (this.remaining.length <= this.options.chunkSize) {
           chunk = this.remaining;
@@ -356,7 +375,7 @@
       })(this);
       this.saxParser.onclosetag = (function(_this) {
         return function() {
-          var cdata, emptyStr, err, error1, key, node, nodeName, obj, objClone, old, s, xpath;
+          var cdata, emptyStr, err, key, node, nodeName, obj, objClone, old, s, xpath;
           obj = stack.pop();
           nodeName = obj["#name"];
           if (!_this.options.explicitChildren || !_this.options.preserveChildrenOrder) {
@@ -476,7 +495,7 @@
     };
 
     Parser.prototype.parseString = function(str, cb) {
-      var err, error1;
+      var err;
       if ((cb != null) && typeof cb === "function") {
         this.on("end", function(result) {
           this.reset();
diff --git a/package.json b/package.json
index 0adc52cd..bdaa3f3d 100644
--- a/package.json
+++ b/package.json
@@ -59,6 +59,7 @@
     "lib": "./lib"
   },
   "scripts": {
+    "compile": "coffee --compile --output lib/ src",
     "test": "zap",
     "coverage": "nyc npm test && nyc report",
     "coveralls": "nyc npm test && nyc report --reporter=text-lcov | coveralls"
diff --git a/test/roundtrip.coffee b/test/roundtrip.coffee
new file mode 100644
index 00000000..95a53e1b
--- /dev/null
+++ b/test/roundtrip.coffee
@@ -0,0 +1,38 @@
+xml2js = require '../lib/xml2js'
+assert = require 'assert'
+equ = assert.equal
+
+module.exports =
+  'xml to js to xml': (test) ->
+
+    xml = """
+    <groceries>
+       <dairy>milk</dairy>
+       <produce>celery</produce>
+       <dairy>eggs</dairy>
+       <produce>apples</produce>
+       <dairy>butter</dairy>
+       <produce>eggplant</produce>
+    </groceries>
+    """
+    console.log xml
+
+    options =
+      explicitChildren: true
+      preserveChildrenOrder:true
+      headless: true
+      renderOpts:
+        pretty: true
+
+    xml2js.parseString xml, options, (err, js) ->
+      if err
+        throw err
+      else
+        console.log js
+        builder = new xml2js.Builder options
+        xml2 = builder.buildObject js
+        console.log xml2
+
+        # compare ignore whitespace
+        equ (xml.replace /\s+/g, " "), (xml2.replace /\s+/g, " ")
+        test.done()