locutus
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Locutus other languages' standard libraries to JavaScript for fun and educational purposes
77 lines (76 loc) • 3.12 kB
JavaScript
const asArray = (value) => (Array.isArray(value) ? [...value] : [value]);
export function str_replace(search, replace, subject, countObj) {
// discuss at: https://locutus.io/php/str_replace/
// original by: Kevin van Zonneveld (https://kvz.io)
// improved by: Gabriel Paderni
// improved by: Philip Peterson
// improved by: Simon Willison (https://simonwillison.net)
// improved by: Kevin van Zonneveld (https://kvz.io)
// improved by: Onno Marsman (https://twitter.com/onnomarsman)
// improved by: Brett Zamir (https://brett-zamir.me)
// revised by: Jonas Raoni Soares Silva (https://www.jsfromhell.com)
// bugfixed by: Anton Ongson
// bugfixed by: Kevin van Zonneveld (https://kvz.io)
// bugfixed by: Oleg Eremeev
// bugfixed by: Glen Arason (https://CanadianDomainRegistry.ca)
// bugfixed by: Glen Arason (https://CanadianDomainRegistry.ca)
// bugfixed by: Mahmoud Saeed
// input by: Onno Marsman (https://twitter.com/onnomarsman)
// input by: Brett Zamir (https://brett-zamir.me)
// input by: Oleg Eremeev
// note 1: The countObj parameter (optional) if used must be passed in as a
// note 1: object. The count will then be written by reference into it's `value` property
// example 1: str_replace(' ', '.', 'Kevin van Zonneveld')
// returns 1: 'Kevin.van.Zonneveld'
// example 2: str_replace(['{name}', 'l'], ['hello', 'm'], '{name}, lars')
// returns 2: 'hemmo, mars'
// example 3: str_replace(Array('S','F'),'x','ASDFASDF')
// returns 3: 'AxDxAxDx'
// example 4: var countObj = {}
// example 4: str_replace(['A','D'], ['x','y'] , 'ASDFASDF' , countObj)
// example 4: var $result = countObj.value
// returns 4: 4
// example 5: str_replace('', '.', 'aaa')
// returns 5: 'aaa'
let i = 0;
let j = 0;
let temp = '';
let repl = '';
let sl = 0;
let fl = 0;
const f = asArray(search);
let r = asArray(replace);
const s = asArray(subject);
const sa = Array.isArray(subject);
if (Array.isArray(search) && typeof replace === 'string') {
temp = replace;
const replaceArr = [];
for (i = 0; i < search.length; i += 1) {
replaceArr[i] = temp;
}
temp = '';
r = [...replaceArr];
}
if (typeof countObj !== 'undefined') {
countObj.value = 0;
}
for (i = 0, sl = s.length; i < sl; i++) {
if (s[i] === undefined || s[i] === '') {
continue;
}
for (j = 0, fl = f.length; j < fl; j++) {
const findValue = f[j];
if (findValue === undefined || findValue === '') {
continue;
}
temp = (s[i] ?? '') + '';
const replacement = r[j];
repl = replacement ?? '';
s[i] = temp.replaceAll(findValue, repl);
if (typeof countObj !== 'undefined') {
countObj.value = (countObj.value ?? 0) + temp.split(findValue).length - 1;
}
}
}
return sa ? s : (s[0] ?? '');
}