76 lines
1.4 KiB
JavaScript
76 lines
1.4 KiB
JavaScript
/*
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* Copyright (C) Sapphirecode - All Rights Reserved
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* This file is part of Utilities which is released under MIT.
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* See file 'LICENSE' for full license details.
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* Created by Timo Hocker <timo@scode.ovh>, March 2020
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*/
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'use strict';
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/**
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* truncates a floating point number
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*
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* @param {number} num number to truncate
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* @param {number} len length to truncate to
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* @returns {number} truncated number
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*/
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function truncate_decimal (num, len) {
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return Math.round (num * (10 ** len)) / (10 ** len);
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}
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/**
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* parse json and catch invalid strings
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*
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* @param {string} text input
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* @returns {any} parsed
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*/
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function try_parse_json (text) {
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try {
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return JSON.parse (text);
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}
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catch (e) {
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// noop
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}
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return null;
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}
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/**
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* copy an object to prevent modification to the original
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*
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* @param {object} obj object to copy
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* @returns {object} copy
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*/
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function copy_object (obj) {
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return JSON.parse (JSON.stringify (obj));
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}
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/**
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* run a regular expression and callback for every result
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*
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* @param {any} regex regular expression
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* @param {any} data data to run on
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* @param {any} func function to execute
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*/
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function run_regex (regex, data, func) {
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if (!regex.global) {
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const result = regex.exec (data);
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if (result)
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func (result);
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return;
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}
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let res = regex.exec (data);
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while (res) {
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func (res);
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res = regex.exec (data);
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}
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}
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module.exports = {
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truncate_decimal,
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try_parse_json,
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copy_object,
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run_regex
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};
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