let split of objects use key to set another property (e.g. topic)

and add tests
and update messages

nodes/core/locales/en-US/messages.json

@@ -758,7 +758,9 @@
             "action": "Action",
             "addnewline": "Add newline (\\n) to each payload?",
             "createdir": "Create directory if it doesn't exist?",
-            "outputas": "Output as",
+            "outputas": "Output",
+            "breakchunks": "Break into chunks",
+            "breaklines": "Break into lines",
             "filelabel": "file",
             "deletelabel": "delete __file__"
         },
@@ -768,8 +770,10 @@
             "delete": "delete file"
         },
         "output": {
-            "utf8": "a utf8 string",
+            "utf8": "a single utf8 string",
-            "buffer": "a Buffer"
+            "buffer": "a single Buffer object",
+            "lines": "a msg per line",
+            "stream": "a stream of Buffers"
         },
         "status": {
             "wrotefile": "wrote to file: __file__",
@@ -792,9 +796,10 @@
         "objectSend":"Send a message for each key/value pair",
         "strBuff":"<b>String</b> / <b>Buffer</b>",
         "array":"<b>Array</b>",
-        "splitUsing": "Split using",
+        "splitUsing":"Split using",
-        "splitLength": "Fixed length of",
+        "splitLength":"Fixed length of",
-        "stream":"Handle as a stream of messages"
+        "stream":"Handle as a stream of messages",
+        "addname":" Copy key to "
     },
     "join":{
         "mode":{

nodes/core/logic/17-split.html

@@ -16,24 +16,29 @@
 
 <script type="text/x-red" data-template-name="split">
     <div class="form-row"><span data-i18n="[html]split.intro"></span></div>
-    <div class="form-row"><span data-i18n="[html]split.object"></span></div>
-    <div class="form-row" style="padding-left: 10px"><span data-i18n="[html]split.objectSend"></span></div>
     <div class="form-row"><span data-i18n="[html]split.strBuff"></span></div>
     <div class="form-row">
-        <label for="node-input-splt" style="padding-left: 10px;margin-right: -10px;" data-i18n="split.splitUsing"></label>
+        <label for="node-input-splt" style="padding-left:10px; margin-right:-10px;" data-i18n="split.splitUsing"></label>
-        <input type="text" id="node-input-splt" style="width: 70%">
+        <input type="text" id="node-input-splt" style="width:70%">
         <input type="hidden" id="node-input-spltType">
     </div>
     <div class="form-row">
-        <input type="checkbox" id="node-input-stream" style="margin-left: 10px; vertical-align:top; width: auto;">
+        <input type="checkbox" id="node-input-stream" style="margin-left:10px; vertical-align:top; width:auto;">
         <label for="node-input-stream" style="width:auto;" data-i18n="split.stream"></label>
     </div>
     <div class="form-row"><span data-i18n="[html]split.array"></span></div>
     <div class="form-row">
-        <label for="node-input-arraySplt" style="padding-left: 10px;margin-right: -10px;" data-i18n="split.splitUsing"></label>
+        <label for="node-input-arraySplt" style="padding-left:10px; margin-right:-10px;" data-i18n="split.splitUsing"></label>
-        <input type="text" id="node-input-arraySplt" style="width: 70%">
+        <input type="text" id="node-input-arraySplt" style="width:70%">
         <input type="hidden" id="node-input-arraySpltType">
     </div>
+    <div class="form-row"><span data-i18n="[html]split.object"></span></div>
+    <div class="form-row" style="padding-left: 10px"><span data-i18n="[html]split.objectSend"></span></div>
+    <div class="form-row">
+        <input type="checkbox" id="node-input-addname" style="margin-left:10px; vertical-align:baseline; width:auto;">
+        <label for="node-input-addname" style="width:auto;" data-i18n="split.addname"></label>
+        <input type="text" id="node-input-addfname" style="width:70%">
+    </div>
     <hr/>
     <div class="form-row">
         <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
@@ -73,7 +78,9 @@
             spltType: {value:"str"},
             arraySplt: {value:1},
             arraySpltType: {value:"len"},
-            stream: {value: false}
+            stream: {value:false},
+            addname: {value:false},
+            addfname: {value:"topic"}
         },
         inputs:1,
         outputs:1,
@@ -104,10 +111,15 @@
                     {value:"len", label:RED._("node-red:split.splitLength"),validate:/^\d+$/}
                 ]
             });
+            $("#node-input-addfname").typedInput({
+                typeField: $("#node-input-fnameType"),
+                types:['msg']
+            });
         }
     });
 </script>
 
+
 <script type="text/x-red" data-template-name="join">
     <div class="form-row">
         <label data-i18n="join.mode.mode"></label>

nodes/core/logic/17-split.js

@@ -39,6 +39,8 @@ module.exports = function(RED) {
         var node = this;
         node.stream = n.stream;
         node.spltType = n.spltType || "str";
+        node.addname = n.addname || false;
+        node.addfname = n.addfname;
         try {
             if (node.spltType === "str") {
                 this.splt = (n.splt || "\\n").replace(/\\n/,"\n").replace(/\\r/,"\r").replace(/\\t/,"\t").replace(/\\e/,"\e").replace(/\\f/,"\f").replace(/\\0/,"\0");
@@ -147,6 +149,7 @@ module.exports = function(RED) {
                     for (var p in pay) {
                         if (pay.hasOwnProperty(p)) {
                             msg.payload = pay[p];
+                            if (node.addname === true) { msg[node.addfname] = p; }
                             msg.parts.key = p;
                             msg.parts.index = j;
                             msg.parts.count = l;

test/nodes/core/logic/17-split_spec.js

@@ -91,11 +91,34 @@ describe('SPLIT node', function() {
                 msg.parts.should.have.property("key");
                 msg.parts.should.have.property("count");
                 msg.parts.should.have.property("index");
+                msg.topic.should.equal("foo");
                 if (msg.parts.index === 0) { msg.payload.should.equal(1); }
                 if (msg.parts.index === 1) { msg.payload.should.equal("2"); }
                 if (msg.parts.index === 2) { msg.payload.should.equal(true); done(); }
             });
-            sn1.receive({payload:{a:1,b:"2",c:true}});
+            sn1.receive({topic:"foo",payload:{a:1,b:"2",c:true}});
+        });
+    });
+
+    it('should split an object into pieces and overwrite their topics', function(done) {
+        var flow = [{id:"sn1", type:"split", addname:true, addfname:"topic", wires:[["sn2"]]},
+                    {id:"sn2", type:"helper"}];
+        helper.load(splitNode, flow, function() {
+            var sn1 = helper.getNode("sn1");
+            var sn2 = helper.getNode("sn2");
+            var count = 0;
+            sn2.on("input", function(msg) {
+                msg.should.have.property("payload");
+                msg.should.have.property("parts");
+                msg.parts.should.have.property("type","object");
+                msg.parts.should.have.property("key");
+                msg.parts.should.have.property("count");
+                msg.parts.should.have.property("index");
+                if (msg.parts.index === 0) { msg.payload.should.equal(1); msg.topic.should.equal("a"); }
+                if (msg.parts.index === 1) { msg.payload.should.equal("2"); msg.topic.should.equal("b"); }
+                if (msg.parts.index === 2) { msg.payload.should.equal(true); msg.topic.should.equal("c"); done(); }
+            });
+            sn1.receive({topic:"foo",payload:{a:1,b:"2",c:true}});
         });
     });