mirror of
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74 lines
2.5 KiB
JavaScript
74 lines
2.5 KiB
JavaScript
/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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var RED = require(process.env.NODE_RED_HOME + "/red/red");
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var operators = {
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'eq': function(a, b) { return a == b; },
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'neq': function(a, b) { return a != b; },
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'lt': function(a, b) { return a < b; },
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'lte': function(a, b) { return a <= b; },
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'gt': function(a, b) { return a > b; },
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'gte': function(a, b) { return a >= b; },
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'btwn': function(a, b, c) { return a >= b && a <= c; },
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'cont': function(a, b) { return (a + "").indexOf(b) != -1; },
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'regex': function(a, b) { return (a + "").match(new RegExp(b)); },
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'true': function(a) { return a === true; },
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'false': function(a) { return a === false; },
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'null': function(a) { return typeof a == "undefined"; },
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'nnull': function(a) { return typeof a != "undefined"; },
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'else': function(a) { return a === true; }
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};
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function SwitchNode(n) {
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RED.nodes.createNode(this, n);
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this.rules = n.rules;
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this.property = n.property;
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this.checkall = n.checkall || "true";
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var propertyParts = n.property.split("."),
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node = this;
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for (var i=0; i<this.rules.length; i+=1) {
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var rule = this.rules[i];
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if (!isNaN(Number(rule.v))) {
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rule.v = Number(rule.v);
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rule.v2 = Number(rule.v2);
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}
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}
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this.on('input', function (msg) {
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var onward = [];
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var prop = propertyParts.reduce(function (obj, i) {
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return obj[i]
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}, msg);
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var elseflag = true;
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for (var i=0; i<node.rules.length; i+=1) {
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var rule = node.rules[i];
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var test = prop;
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if (rule.t == "else") { test = elseflag; elseflag = true; }
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if (operators[rule.t](test,rule.v, rule.v2)) {
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onward.push(msg);
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elseflag = false;
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if (node.checkall == "false") { break; }
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} else {
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onward.push(null);
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}
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}
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this.send(onward);
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});
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}
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RED.nodes.registerType("switch", SwitchNode);
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