From f361139d744e58a6c33841cee227d13d1970bb98 Mon Sep 17 00:00:00 2001 From: toasted-nutbread Date: Wed, 6 May 2020 19:37:36 -0400 Subject: Japanese util refactor (#510) * Convert mixed japanese.js to utility class * Copy functions from bg/js/japanese.js into mixed/js/japanese.js * Remove bg/js/japanese.js * Make wanakana dependency optional * Update tests --- ext/bg/js/japanese.js | 426 -------------------------------------------------- 1 file changed, 426 deletions(-) delete mode 100644 ext/bg/js/japanese.js (limited to 'ext/bg/js') diff --git a/ext/bg/js/japanese.js b/ext/bg/js/japanese.js deleted file mode 100644 index ac81acb5..00000000 --- a/ext/bg/js/japanese.js +++ /dev/null @@ -1,426 +0,0 @@ -/* - * Copyright (C) 2016-2020 Yomichan Authors - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -/* global - * jp - * wanakana - */ - -(() => { - const HALFWIDTH_KATAKANA_MAPPING = new Map([ - ['ｦ', 'ヲヺ-'], - ['ｧ', 'ァ--'], - ['ｨ', 'ィ--'], - ['ｩ', 'ゥ--'], - ['ｪ', 'ェ--'], - ['ｫ', 'ォ--'], - ['ｬ', 'ャ--'], - ['ｭ', 'ュ--'], - ['ｮ', 'ョ--'], - ['ｯ', 'ッ--'], - ['ｰ', 'ー--'], - ['ｱ', 'ア--'], - ['ｲ', 'イ--'], - ['ｳ', 'ウヴ-'], - ['ｴ', 'エ--'], - ['ｵ', 'オ--'], - ['ｶ', 'カガ-'], - ['ｷ', 'キギ-'], - ['ｸ', 'クグ-'], - ['ｹ', 'ケゲ-'], - ['ｺ', 'コゴ-'], - ['ｻ', 'サザ-'], - ['ｼ', 'シジ-'], - ['ｽ', 'スズ-'], - ['ｾ', 'セゼ-'], - ['ｿ', 'ソゾ-'], - ['ﾀ', 'タダ-'], - ['ﾁ', 'チヂ-'], - ['ﾂ', 'ツヅ-'], - ['ﾃ', 'テデ-'], - ['ﾄ', 'トド-'], - ['ﾅ', 'ナ--'], - ['ﾆ', 'ニ--'], - ['ﾇ', 'ヌ--'], - ['ﾈ', 'ネ--'], - ['ﾉ', 'ノ--'], - ['ﾊ', 'ハバパ'], - ['ﾋ', 'ヒビピ'], - ['ﾌ', 'フブプ'], - ['ﾍ', 'ヘベペ'], - ['ﾎ', 'ホボポ'], - ['ﾏ', 'マ--'], - ['ﾐ', 'ミ--'], - ['ﾑ', 'ム--'], - ['ﾒ', 'メ--'], - ['ﾓ', 'モ--'], - ['ﾔ', 'ヤ--'], - ['ﾕ', 'ユ--'], - ['ﾖ', 'ヨ--'], - ['ﾗ', 'ラ--'], - ['ﾘ', 'リ--'], - ['ﾙ', 'ル--'], - ['ﾚ', 'レ--'], - ['ﾛ', 'ロ--'], - ['ﾜ', 'ワ--'], - ['ﾝ', 'ン--'] - ]); - - const ITERATION_MARK_CODE_POINT = 0x3005; - - const HIRAGANA_SMALL_TSU_CODE_POINT = 0x3063; - const KATAKANA_SMALL_TSU_CODE_POINT = 0x30c3; - const KANA_PROLONGED_SOUND_MARK_CODE_POINT = 0x30fc; - - // Existing functions - - const isCodePointKanji = jp.isCodePointKanji; - const isStringEntirelyKana = jp.isStringEntirelyKana; - - - // Conversion functions - - function convertKatakanaToHiragana(text) { - let result = ''; - for (const c of text) { - if (wanakana.isKatakana(c)) { - result += wanakana.toHiragana(c); - } else { - result += c; - } - } - - return result; - } - - function convertHiraganaToKatakana(text) { - let result = ''; - for (const c of text) { - if (wanakana.isHiragana(c)) { - result += wanakana.toKatakana(c); - } else { - result += c; - } - } - - return result; - } - - function convertToRomaji(text) { - return wanakana.toRomaji(text); - } - - function convertReading(expression, reading, readingMode) { - switch (readingMode) { - case 'hiragana': - return convertKatakanaToHiragana(reading); - case 'katakana': - return convertHiraganaToKatakana(reading); - case 'romaji': - if (reading) { - return convertToRomaji(reading); - } else { - if (isStringEntirelyKana(expression)) { - return convertToRomaji(expression); - } - } - return reading; - case 'none': - return ''; - default: - return reading; - } - } - - function convertNumericToFullWidth(text) { - let result = ''; - for (const char of text) { - let c = char.codePointAt(0); - if (c >= 0x30 && c <= 0x39) { // ['0', '9'] - c += 0xff10 - 0x30; // 0xff10 = '0' full width - result += String.fromCodePoint(c); - } else { - result += char; - } - } - return result; - } - - function convertHalfWidthKanaToFullWidth(text, sourceMap=null) { - let result = ''; - - // This function is safe to use charCodeAt instead of codePointAt, since all - // the relevant characters are represented with a single UTF-16 character code. - for (let i = 0, ii = text.length; i < ii; ++i) { - const c = text[i]; - const mapping = HALFWIDTH_KATAKANA_MAPPING.get(c); - if (typeof mapping !== 'string') { - result += c; - continue; - } - - let index = 0; - switch (text.charCodeAt(i + 1)) { - case 0xff9e: // dakuten - index = 1; - break; - case 0xff9f: // handakuten - index = 2; - break; - } - - let c2 = mapping[index]; - if (index > 0) { - if (c2 === '-') { // invalid - index = 0; - c2 = mapping[0]; - } else { - ++i; - } - } - - if (sourceMap !== null && index > 0) { - sourceMap.combine(result.length, 1); - } - result += c2; - } - - return result; - } - - function convertAlphabeticToKana(text, sourceMap=null) { - let part = ''; - let result = ''; - - for (const char of text) { - // Note: 0x61 is the character code for 'a' - let c = char.codePointAt(0); - if (c >= 0x41 && c <= 0x5a) { // ['A', 'Z'] - c += (0x61 - 0x41); - } else if (c >= 0x61 && c <= 0x7a) { // ['a', 'z'] - // NOP; c += (0x61 - 0x61); - } else if (c >= 0xff21 && c <= 0xff3a) { // ['A', 'Z'] fullwidth - c += (0x61 - 0xff21); - } else if (c >= 0xff41 && c <= 0xff5a) { // ['a', 'z'] fullwidth - c += (0x61 - 0xff41); - } else if (c === 0x2d || c === 0xff0d) { // '-' or fullwidth dash - c = 0x2d; // '-' - } else { - if (part.length > 0) { - result += convertAlphabeticPartToKana(part, sourceMap, result.length); - part = ''; - } - result += char; - continue; - } - part += String.fromCodePoint(c); - } - - if (part.length > 0) { - result += convertAlphabeticPartToKana(part, sourceMap, result.length); - } - return result; - } - - function convertAlphabeticPartToKana(text, sourceMap, sourceMapStart) { - const result = wanakana.toHiragana(text); - - // Generate source mapping - if (sourceMap !== null) { - let i = 0; - let resultPos = 0; - const ii = text.length; - while (i < ii) { - // Find smallest matching substring - let iNext = i + 1; - let resultPosNext = result.length; - while (iNext < ii) { - const t = wanakana.toHiragana(text.substring(0, iNext)); - if (t === result.substring(0, t.length)) { - resultPosNext = t.length; - break; - } - ++iNext; - } - - // Merge characters - const removals = iNext - i - 1; - if (removals > 0) { - sourceMap.combine(sourceMapStart, removals); - } - ++sourceMapStart; - - // Empty elements - const additions = resultPosNext - resultPos - 1; - for (let j = 0; j < additions; ++j) { - sourceMap.insert(sourceMapStart, 0); - ++sourceMapStart; - } - - i = iNext; - resultPos = resultPosNext; - } - } - - return result; - } - - - // Furigana distribution - - function distributeFurigana(expression, reading) { - const fallback = [{furigana: reading, text: expression}]; - if (!reading) { - return fallback; - } - - let isAmbiguous = false; - const segmentize = (reading2, groups) => { - if (groups.length === 0 || isAmbiguous) { - return []; - } - - const group = groups[0]; - if (group.mode === 'kana') { - if (convertKatakanaToHiragana(reading2).startsWith(convertKatakanaToHiragana(group.text))) { - const readingLeft = reading2.substring(group.text.length); - const segs = segmentize(readingLeft, groups.splice(1)); - if (segs) { - return [{text: group.text, furigana: ''}].concat(segs); - } - } - } else { - let foundSegments = null; - for (let i = reading2.length; i >= group.text.length; --i) { - const readingUsed = reading2.substring(0, i); - const readingLeft = reading2.substring(i); - const segs = segmentize(readingLeft, groups.slice(1)); - if (segs) { - if (foundSegments !== null) { - // more than one way to segmentize the tail, mark as ambiguous - isAmbiguous = true; - return null; - } - foundSegments = [{text: group.text, furigana: readingUsed}].concat(segs); - } - // there is only one way to segmentize the last non-kana group - if (groups.length === 1) { - break; - } - } - return foundSegments; - } - }; - - const groups = []; - let modePrev = null; - for (const c of expression) { - const codePoint = c.codePointAt(0); - const modeCurr = isCodePointKanji(codePoint) || codePoint === ITERATION_MARK_CODE_POINT ? 'kanji' : 'kana'; - if (modeCurr === modePrev) { - groups[groups.length - 1].text += c; - } else { - groups.push({mode: modeCurr, text: c}); - modePrev = modeCurr; - } - } - - const segments = segmentize(reading, groups); - if (segments && !isAmbiguous) { - return segments; - } - return fallback; - } - - function distributeFuriganaInflected(expression, reading, source) { - const output = []; - - let stemLength = 0; - const shortest = Math.min(source.length, expression.length); - const sourceHiragana = convertKatakanaToHiragana(source); - const expressionHiragana = convertKatakanaToHiragana(expression); - while (stemLength < shortest && sourceHiragana[stemLength] === expressionHiragana[stemLength]) { - ++stemLength; - } - const offset = source.length - stemLength; - - const stemExpression = source.substring(0, source.length - offset); - const stemReading = reading.substring( - 0, - offset === 0 ? reading.length : reading.length - expression.length + stemLength - ); - for (const segment of distributeFurigana(stemExpression, stemReading)) { - output.push(segment); - } - - if (stemLength !== source.length) { - output.push({text: source.substring(stemLength), furigana: ''}); - } - - return output; - } - - - // Miscellaneous - - function collapseEmphaticSequences(text, fullCollapse, sourceMap=null) { - let result = ''; - let collapseCodePoint = -1; - const hasSourceMap = (sourceMap !== null); - for (const char of text) { - const c = char.codePointAt(0); - if ( - c === HIRAGANA_SMALL_TSU_CODE_POINT || - c === KATAKANA_SMALL_TSU_CODE_POINT || - c === KANA_PROLONGED_SOUND_MARK_CODE_POINT - ) { - if (collapseCodePoint !== c) { - collapseCodePoint = c; - if (!fullCollapse) { - result += char; - continue; - } - } - } else { - collapseCodePoint = -1; - result += char; - continue; - } - - if (hasSourceMap) { - sourceMap.combine(Math.max(0, result.length - 1), 1); - } - } - return result; - } - - - // Exports - - Object.assign(jp, { - convertKatakanaToHiragana, - convertHiraganaToKatakana, - convertToRomaji, - convertReading, - convertNumericToFullWidth, - convertHalfWidthKanaToFullWidth, - convertAlphabeticToKana, - distributeFurigana, - distributeFuriganaInflected, - collapseEmphaticSequences - }); -})(); -- cgit v1.2.3