avoid look-behind in nyaize - fixes 419

This commit is contained in:
dakkar 2024-02-20 20:00:22 +00:00 committed by Amelia Yukii
parent 15665d1533
commit b02ded29dd
2 changed files with 43 additions and 6 deletions

View file

@ -3,21 +3,26 @@
* SPDX-License-Identifier: AGPL-3.0-only
*/
const enRegex1 = /(?<=n)a/gi;
const enRegex2 = /(?<=morn)ing/gi;
const enRegex3 = /(?<=every)one/gi;
const koRegex1 = /[나-낳]/g;
const koRegex2 = /(다$)|(다(?=\.))|(다(?= ))|(다(?=!))|(다(?=\?))/gm;
const koRegex3 = /(야(?=\?))|(야$)|(야(?= ))/gm;
function ifAfter(prefix, fn) {
const preLen = prefix.length;
const regex = new RegExp(prefix,'i');
return (x,pos,string) => {
return pos > 0 && string.substring(pos-preLen,pos).match(regex) ? fn(x) : x;
};
}
export function nyaize(text: string): string {
return text
// ja-JP
.replaceAll('な', 'にゃ').replaceAll('ナ', 'ニャ').replaceAll('ナ', 'ニャ')
// en-US
.replace(enRegex1, x => x === 'A' ? 'YA' : 'ya')
.replace(enRegex2, x => x === 'ING' ? 'YAN' : 'yan')
.replace(enRegex3, x => x === 'ONE' ? 'NYAN' : 'nyan')
.replace(/a/gi, ifAfter('n', x => x === 'A' ? 'YA' : 'ya'))
.replace(/ing/gi, ifAfter('morn', x => x === 'ING' ? 'YAN' : 'yan'))
.replace(/one/gi, ifAfter('every', x => x === 'ONE' ? 'NYAN' : 'nyan'))
// ko-KR
.replace(koRegex1, match => String.fromCharCode(
match.charCodeAt(0)! + '냐'.charCodeAt(0) - '나'.charCodeAt(0),

View file

@ -0,0 +1,32 @@
import { describe, test, assert, afterEach } from 'vitest';
import { nyaize } from '@/scripts/nyaize.js';
function runTests(cases) {
for (const c of cases) {
const [input,expected] = c;
const got = nyaize(input);
assert.strictEqual(got, expected);
}
}
describe('nyaize', () => {
test('ja-JP', () => {
runTests([
['きれいな','きれいにゃ'],
['ナナナ', 'ニャニャニャ'],
['ナナ','ニャニャ'],
]);
});
test('en-US', () => {
runTests([
['bar','bar'],
['banana','banyanya'],
['booting','booting'],
['morning','mornyan'],
['mmmorning','mmmornyan'],
['someone','someone'],
['everyone','everynyan'],
['foreveryone','foreverynyan'],
]);
});
});