This app provides monitoring and information features for the common freifunk user and the technical stuff of a freifunk community.
Code base is taken from a TUM Practical Course project and added here to see if Freifunk Altdorf can use it.
https://www.freifunk-altdorf.de
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86 lines
2.3 KiB
86 lines
2.3 KiB
/*! |
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* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com> |
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* MIT Licensed |
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*/ |
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var fs = require('fs'); |
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function Options(defaults) { |
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var internalValues = {}; |
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var values = this.value = {}; |
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Object.keys(defaults).forEach(function(key) { |
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internalValues[key] = defaults[key]; |
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Object.defineProperty(values, key, { |
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get: function() { return internalValues[key]; }, |
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configurable: false, |
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enumerable: true |
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}); |
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}); |
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this.reset = function() { |
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Object.keys(defaults).forEach(function(key) { |
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internalValues[key] = defaults[key]; |
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}); |
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return this; |
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}; |
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this.merge = function(options, required) { |
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options = options || {}; |
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if (Object.prototype.toString.call(required) === '[object Array]') { |
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var missing = []; |
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for (var i = 0, l = required.length; i < l; ++i) { |
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var key = required[i]; |
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if (!(key in options)) { |
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missing.push(key); |
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} |
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} |
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if (missing.length > 0) { |
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if (missing.length > 1) { |
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throw new Error('options ' + |
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missing.slice(0, missing.length - 1).join(', ') + ' and ' + |
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missing[missing.length - 1] + ' must be defined'); |
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} |
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else throw new Error('option ' + missing[0] + ' must be defined'); |
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} |
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} |
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Object.keys(options).forEach(function(key) { |
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if (key in internalValues) { |
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internalValues[key] = options[key]; |
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} |
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}); |
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return this; |
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}; |
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this.copy = function(keys) { |
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var obj = {}; |
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Object.keys(defaults).forEach(function(key) { |
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if (keys.indexOf(key) !== -1) { |
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obj[key] = values[key]; |
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} |
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}); |
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return obj; |
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}; |
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this.read = function(filename, cb) { |
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if (typeof cb == 'function') { |
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var self = this; |
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fs.readFile(filename, function(error, data) { |
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if (error) return cb(error); |
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var conf = JSON.parse(data); |
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self.merge(conf); |
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cb(); |
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}); |
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} |
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else { |
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var conf = JSON.parse(fs.readFileSync(filename)); |
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this.merge(conf); |
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} |
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return this; |
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}; |
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this.isDefined = function(key) { |
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return typeof values[key] != 'undefined'; |
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}; |
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this.isDefinedAndNonNull = function(key) { |
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return typeof values[key] != 'undefined' && values[key] !== null; |
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}; |
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Object.freeze(values); |
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Object.freeze(this); |
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} |
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module.exports = Options;
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