2018-08-31 08:24:07 +00:00
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// Utilities for Japanese
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const kanaMap: string[][] = [
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2018-09-02 14:40:03 +00:00
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['ガ', 'ｶﾞ'], ['ギ', 'ｷﾞ'], ['グ', 'ｸﾞ'], ['ゲ', 'ｹﾞ'], ['ゴ', 'ｺﾞ'],
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['ザ', 'ｻﾞ'], ['ジ', 'ｼﾞ'], ['ズ', 'ｽﾞ'], ['ゼ', 'ｾﾞ'], ['ゾ', 'ｿﾞ'],
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['ダ', 'ﾀﾞ'], ['ヂ', 'ﾁﾞ'], ['ヅ', 'ﾂﾞ'], ['デ', 'ﾃﾞ'], ['ド', 'ﾄﾞ'],
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['バ', 'ﾊﾞ'], ['ビ', 'ﾋﾞ'], ['ブ', 'ﾌﾞ'], ['ベ', 'ﾍﾞ'], ['ボ', 'ﾎﾞ'],
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['パ', 'ﾊﾟ'], ['ピ', 'ﾋﾟ'], ['プ', 'ﾌﾟ'], ['ペ', 'ﾍﾟ'], ['ポ', 'ﾎﾟ'],
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['ヴ', 'ｳﾞ'], ['ヷ', 'ﾜﾞ'], ['ヺ', 'ｦﾞ'],
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2018-08-31 08:24:07 +00:00
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['ア', 'ｱ'], ['イ', 'ｲ'], ['ウ', 'ｳ'], ['エ', 'ｴ'], ['オ', 'ｵ'],
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['カ', 'ｶ'], ['キ', 'ｷ'], ['ク', 'ｸ'], ['ケ', 'ｹ'], ['コ', 'ｺ'],
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['サ', 'ｻ'], ['シ', 'ｼ'], ['ス', 'ｽ'], ['セ', 'ｾ'], ['ソ', 'ｿ'],
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['タ', 'ﾀ'], ['チ', 'ﾁ'], ['ツ', 'ﾂ'], ['テ', 'ﾃ'], ['ト', 'ﾄ'],
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['ナ', 'ﾅ'], ['ニ', 'ﾆ'], ['ヌ', 'ﾇ'], ['ネ', 'ﾈ'], ['ノ', 'ﾉ'],
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['ハ', 'ﾊ'], ['ヒ', 'ﾋ'], ['フ', 'ﾌ'], ['ヘ', 'ﾍ'], ['ホ', 'ﾎ'],
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['マ', 'ﾏ'], ['ミ', 'ﾐ'], ['ム', 'ﾑ'], ['メ', 'ﾒ'], ['モ', 'ﾓ'],
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['ヤ', 'ﾔ'], ['ユ', 'ﾕ'], ['ヨ', 'ﾖ'],
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['ラ', 'ﾗ'], ['リ', 'ﾘ'], ['ル', 'ﾙ'], ['レ', 'ﾚ'], ['ロ', 'ﾛ'],
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['ワ', 'ﾜ'], ['ヲ', 'ｦ'], ['ン', 'ﾝ'],
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['ァ', 'ｧ'], ['ィ', 'ｨ'], ['ゥ', 'ｩ'], ['ェ', 'ｪ'], ['ォ', 'ｫ'],
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['ッ', 'ｯ'], ['ャ', 'ｬ'], ['ュ', 'ｭ'], ['ョ', 'ｮ'],
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['ー', 'ｰ']
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];
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/**
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* カタカナをひらがなに変換します
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* @param str カタカナ
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* @returns ひらがな
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*/
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export function katakanaToHiragana(str: string): string {
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return str.replace(/[\u30a1-\u30f6]/g, match => {
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const char = match.charCodeAt(0) - 0x60;
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return String.fromCharCode(char);
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});
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}
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/**
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* ひらがなをカタカナに変換します
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* @param str ひらがな
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* @returns カタカナ
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*/
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export function hiraganaToKatagana(str: string): string {
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return str.replace(/[\u3041-\u3096]/g, match => {
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const char = match.charCodeAt(0) + 0x60;
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return String.fromCharCode(char);
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});
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}
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/**
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* 全角カタカナを半角カタカナに変換します
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* @param str 全角カタカナ
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* @returns 半角カタカナ
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*/
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export function zenkakuToHankaku(str: string): string {
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const reg = new RegExp('(' + kanaMap.map(x => x[0]).join('|') + ')', 'g');
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return str
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.replace(reg, match =>
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kanaMap.find(x => x[0] == match)[1]
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)
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.replace(/゛/g, 'ﾞ')
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.replace(/゜/g, 'ﾟ');
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};
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/**
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* 半角カタカナを全角カタカナに変換します
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* @param str 半角カタカナ
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* @returns 全角カタカナ
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*/
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export function hankakuToZenkaku(str: string): string {
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const reg = new RegExp('(' + kanaMap.map(x => x[1]).join('|') + ')', 'g');
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return str
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.replace(reg, match =>
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kanaMap.find(x => x[1] == match)[0]
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)
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.replace(/ﾞ/g, '゛')
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.replace(/ﾟ/g, '゜');
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};
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