Add new HTML (cheerio/jquery like) parser node ...

nodes/core/parsers/70-HTML.js

@@ -0,0 +1,59 @@
+/**
+ * Copyright 2014 IBM Corp.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ **/
+
+module.exports = function(RED) {
+    var cheerio = require('cheerio');
+
+    function CheerioNode(n) {
+        RED.nodes.createNode(this,n);
+        this.tag = n.tag || "h1";
+        this.ret = n.ret || "html";
+        this.as = n.as || "single";
+        var node = this;
+        this.on("input", function(msg) {
+            try {
+                var $ = cheerio.load(msg.payload);
+                var pay = [];
+                $(node.tag).each(function() {
+                    if (node.as === "multi") {
+                        var pay2 = null;
+                        if (node.ret === "html") { pay2 = $(this).html(); }
+                        if (node.ret === "text") { pay2 = $(this).text(); }
+                        //if (node.ret === "attr") { pay2 = $(this)[0]["attribs"]; }
+                        //if (node.ret === "val")  { pay2 = $(this).val(); }
+                        if (pay2) {
+                            msg.payload = pay2;
+                            node.send(msg);
+                        }
+                    }
+                    if (node.as === "single") {
+                        if (node.ret === "html") { pay.push( $(this).html() ); }
+                        if (node.ret === "text") { pay.push( $(this).text() ); }
+                        //if (node.ret === "attr") { pay.push( $(this)[0]["attribs"] ); }
+                        //if (node.ret === "val")  { pay.push( $(this).val() ); }
+                    }
+                });
+                if ((node.as === "single") && (pay.length != 0)) {
+                    msg.payload = pay;
+                    node.send(msg);
+                }
+            } catch (error) {
+                node.log('Error: '+error.message);
+            }
+        });
+    }
+    RED.nodes.registerType("html",CheerioNode);
+}