locutus/esm/php/ctype/ctype_cntrl.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

import { getCtypePattern } from "../_helpers/_ctypePattern.js";
import { setlocale } from "../strings/setlocale.js";
export function ctype_cntrl(text) {
    //      discuss at: https://locutus.io/php/ctype_cntrl/
    // parity verified: PHP 8.3
    //     original by: Brett Zamir (https://brett-zamir.me)
    //       example 1: ctype_cntrl('\u0020')
    //       returns 1: false
    //       example 2: ctype_cntrl('\u001F')
    //       returns 2: true
    if (typeof text !== 'string') {
        return false;
    }
    setlocale('LC_ALL', 0);
    const pattern = getCtypePattern('ct');
    return pattern instanceof RegExp ? pattern.test(text) : false;
}