32 lines
1.1 KiB
TypeScript
32 lines
1.1 KiB
TypeScript
/*
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* SPDX-FileCopyrightText: syuilo and misskey-project
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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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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function 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.substring(pos - preLen, pos).match(regex) ? fn(x) : x;
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};
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}
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export function nyaize(text: string): string {
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return text
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// ja-JP
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.replaceAll('な', 'にゃ').replaceAll('ナ', 'ニャ').replaceAll('ﾅ', 'ﾆｬ')
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// en-US
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.replace(/a/gi, ifAfter('n', x => x === 'A' ? 'YA' : 'ya'))
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.replace(/ing/gi, ifAfter('morn', x => x === 'ING' ? 'YAN' : 'yan'))
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.replace(/one/gi, ifAfter('every', x => x === 'ONE' ? 'NYAN' : 'nyan'))
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// ko-KR
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.replace(koRegex1, match => !isNaN(match.charCodeAt(0)) ? String.fromCharCode(
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match.charCodeAt(0) + '냐'.charCodeAt(0) - '나'.charCodeAt(0),
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) : match)
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.replace(koRegex2, '다냥')
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.replace(koRegex3, '냥');
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}
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