decode.js (1243B)
1 /** 2 * @license Apache-2.0 3 * 4 * Copyright (c) 2018 The Stdlib Authors. 5 * 6 * Licensed under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 'use strict'; 20 21 // MODULES // 22 23 var string2buffer = require( '@stdlib/buffer/from-string' ); 24 25 26 // MAIN // 27 28 /** 29 * Re-decodes a UTF-8 string according to a specified encoding. 30 * 31 * @private 32 * @param {string} str - UTF-8 string to decode 33 * @param {string} enc - string encoding 34 * @returns {string} decoded string 35 */ 36 function decode( str, enc ) { 37 // Check if we need to re-decode the string to something other than 'utf8'... 38 if ( enc === 'utf8' || enc === 'buffer' ) { 39 return str; 40 } 41 str = string2buffer( str ); 42 if ( enc ) { 43 return str.toString( enc ); 44 } 45 return str.toString(); 46 } 47 48 49 // EXPORTS // 50 51 module.exports = decode;