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72 lines
1.9 KiB
JavaScript
72 lines
1.9 KiB
JavaScript
6 years ago
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/**
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* A Series of utility functions
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*/
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const fs = require('fs');
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function noOp() {}
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let sysdataPath = './res/data/sys.json';
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let sysData = {};
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/**
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* returns the extension of a file for the given filename.
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* @param {String} filename The name of the file.
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* @return {String} A string that represents the file-extension.
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*/
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exports.getExtension = function (filename) {
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if (!filename) return null;
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try {
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let exts = filename.match(/\.[a-z]+/g); // get the extension by using regex
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if (exts) return exts[exts.length - 1]; // return the found extension
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else return null; // return null if no extension could be found
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} catch (error) {
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console.error(error);
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return null;
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}
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};
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/**
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* lets you define a cleanup for your program exit
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* @param {Function} callback the cleanup function
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* @constructor
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* @author CanyonCasa & Pier-Luc Gendreau on StackOverflow
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*/
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exports.Cleanup = function Cleanup(callback) {
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// attach user callback to the process event emitter
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// if no callback, it will still exit gracefully on Ctrl-C
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callback = callback || noOp;
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process.on('cleanup',callback);
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// do app specific cleaning before exiting
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process.on('exit', function () {
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process.emit('cleanup');
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});
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// catch ctrl+c event and exit normally
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process.on('SIGINT', function () {
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console.log('Ctrl-C...');
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process.exit(2);
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});
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//catch uncaught exceptions, trace, then exit normally
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process.on('uncaughtException', function(e) {
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console.log('Uncaught Exception...');
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console.log(e.stack);
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process.exit(99);
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});
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};
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/* FS */
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exports.dirExistence = function(path, callback) {
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fs.exists(path, (exist) => {
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if (!exist) {
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fs.mkdir(path, (err) => {
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if (!err)
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callback();
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});
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} else {
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callback();
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}
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})
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};
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