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node-red/red/ui.js

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/**
* Copyright 2013 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.
**/
var express = require('express');
var util = require('util');
var crypto = require('crypto');
var fs = require("fs");
var app = express();
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var events = require("./events");
var path = require("path");
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var icon_paths = [path.resolve(__dirname + '/../public/icons')];
events.on("node-icon-dir",function(dir) {
icon_paths.push(path.resolve(dir));
});
// TODO: nothing here uses settings... so does this need to be a function?
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function setupUI(settings) {
// Need to ensure the url ends with a '/' so the static serving works
// with relative paths
app.get("/",function(req,res) {
if (req.originalUrl.slice(-1) != "/") {
res.redirect(req.originalUrl+"/");
} else {
req.next();
}
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});
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app.get("/icons/:icon",function(req,res) {
for (var p in icon_paths) {
if (fs.existsSync(icon_paths[p]+'/'+req.params.icon)) {
res.sendfile(icon_paths[p]+'/'+req.params.icon);
return;
}
}
//TODO: create a default icon
res.sendfile(path.resolve(__dirname + '/../public/icons/arrow-in.png'));
});
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app.use("/",express.static(__dirname + '/../public'));
return app;
}
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module.exports = setupUI;