55 lines
1.5 KiB
TypeScript
55 lines
1.5 KiB
TypeScript
// Adapted from Sharkey, licensed under AGPL-3.0-only
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// https://activitypub.software/TransFem-org/Sharkey/-/blob/develop/packages/misskey-js/src/nyaize.ts
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const koRegex1 = /[나-낳]/g;
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const koRegex2 = /(다$)|(다(?=\.))|(다(?= ))|(다(?=!))|(다(?=\?))/gm;
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const koRegex3 = /(야(?=\?))|(야$)|(야(?= ))/gm;
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const ifAfter = (prefix: string, fn: (x: string) => string) => {
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const preLen = prefix.length;
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const regex = new RegExp(prefix, 'i');
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return (x: string, pos: number, string: string) => {
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return pos > 0 && string.slice(pos - preLen, pos).match(regex) ? fn(x) : x;
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};
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};
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const nyaize = (text: string) =>
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text
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// ja-JP
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.replaceAll('な', 'にゃ')
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.replaceAll('ナ', 'ニャ')
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.replaceAll('ﾅ', 'ﾆｬ')
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// en-US
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.replaceAll(
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'a',
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ifAfter('n', (x) => (x === 'A' ? 'YA' : 'ya')),
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)
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.replaceAll(
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'ing',
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ifAfter('morn', (x) => (x === 'ING' ? 'YAN' : 'yan')),
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)
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.replaceAll(
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'one',
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ifAfter('every', (x) => (x === 'ONE' ? 'NYAN' : 'nyan')),
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)
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// pl-PL
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.replaceAll(
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'ł',
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ifAfter('mia', (x) => (x === 'Ł' ? 'U' : 'u')),
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)
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// ru-RU
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.replaceAll(
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'а',
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ifAfter('н', (x) => (x === 'А' ? 'Я' : 'я')),
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)
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// ko-KR
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.replace(koRegex1, (match) =>
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!isNaN(match.charCodeAt(0))
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? String.fromCharCode(match.charCodeAt(0) + '냐'.charCodeAt(0) - '나'.charCodeAt(0))
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: match,
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)
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.replace(koRegex2, '다냥')
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.replace(koRegex3, '냥');
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export default nyaize;
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