fold.ts
· 511 B · TypeScript
Raw
export const fold = (str: string, len?: number) => {
len = len !== undefined ? len - 1 : 79;
const split = str.split(" ");
let strarr = [];
let strlen = 0;
do {
let w = split.shift(), wlen = w.length;
if (strlen + wlen > len) {
strarr.push('\n' + w);
strlen = wlen;
continue;
} else if (strlen + wlen == len) {
strarr.push(w + '\n');
strlen = wlen;
continue;
} else {
strarr.push(w);
strlen += wlen + 1;
}
} while (split.length > 0);
return strarr.join(" ");
}
| 1 | export const fold = (str: string, len?: number) => { |
| 2 | len = len !== undefined ? len - 1 : 79; |
| 3 | const split = str.split(" "); |
| 4 | let strarr = []; |
| 5 | let strlen = 0; |
| 6 | do { |
| 7 | let w = split.shift(), wlen = w.length; |
| 8 | if (strlen + wlen > len) { |
| 9 | strarr.push('\n' + w); |
| 10 | strlen = wlen; |
| 11 | continue; |
| 12 | } else if (strlen + wlen == len) { |
| 13 | strarr.push(w + '\n'); |
| 14 | strlen = wlen; |
| 15 | continue; |
| 16 | } else { |
| 17 | strarr.push(w); |
| 18 | strlen += wlen + 1; |
| 19 | } |
| 20 | } while (split.length > 0); |
| 21 | return strarr.join(" "); |
| 22 | } |