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node-red/red/api/ui.js

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/**
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* Copyright 2013, 2014 IBM Corp.
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*
* 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.
**/
var express = require('express');
var fs = require("fs");
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var path = require("path");
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var events = require("../events");
var settings = require("../settings");
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var icon_paths = [path.resolve(__dirname + '/../../public/icons')];
var iconCache = {};
//TODO: create a default icon
var defaultIcon = path.resolve(__dirname + '/../../public/icons/arrow-in.png');
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events.on("node-icon-dir",function(dir) {
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icon_paths.push(path.resolve(dir));
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});
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module.exports = {
ensureSlash: function(req,res,next) {
var parts = req.originalUrl.split("?");
if (parts[0].slice(-1) != "/") {
parts[0] += "/";
var redirect = parts.join("?");
res.redirect(301,redirect);
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} else {
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next();
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}
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},
icon: function(req,res) {
if (iconCache[req.params.icon]) {
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res.sendfile(iconCache[req.params.icon]); // if not found, express prints this to the console and serves 404
} else {
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for (var p=0;p<icon_paths.length;p++) {
var iconPath = path.join(icon_paths[p],req.params.icon);
if (fs.existsSync(iconPath)) {
res.sendfile(iconPath);
iconCache[req.params.icon] = iconPath;
return;
}
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}
res.sendfile(defaultIcon);
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}
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},
editor: function(req,res) {
res.sendfile(path.resolve(__dirname + '/../../public/index.html'));
},
editorResources: express.static(__dirname + '/../../public')
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};