From 0f15cca2dff995218a52ff7066008da4cd414e3f Mon Sep 17 00:00:00 2001 From: toasted-nutbread Date: Wed, 11 Mar 2020 20:33:01 -0400 Subject: Convert Japanese utilities to a module-like style --- ext/bg/js/japanese.js | 770 ++++++++++++++++++++++++++------------------------ 1 file changed, 396 insertions(+), 374 deletions(-) (limited to 'ext/bg/js/japanese.js') diff --git a/ext/bg/js/japanese.js b/ext/bg/js/japanese.js index 3b37754d..182d5b98 100644 --- a/ext/bg/js/japanese.js +++ b/ext/bg/js/japanese.js @@ -20,439 +20,461 @@ * wanakana */ -const JP_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 JP_HIRAGANA_RANGE = [0x3040, 0x309f]; -const JP_KATAKANA_RANGE = [0x30a0, 0x30ff]; -const JP_KANA_RANGES = [JP_HIRAGANA_RANGE, JP_KATAKANA_RANGE]; - -const JP_CJK_COMMON_RANGE = [0x4e00, 0x9fff]; -const JP_CJK_RARE_RANGE = [0x3400, 0x4dbf]; -const JP_CJK_RANGES = [JP_CJK_COMMON_RANGE, JP_CJK_RARE_RANGE]; - -const JP_ITERATION_MARK_CHAR_CODE = 0x3005; - -// Japanese character ranges, roughly ordered in order of expected frequency -const JP_JAPANESE_RANGES = [ - JP_HIRAGANA_RANGE, - JP_KATAKANA_RANGE, - - JP_CJK_COMMON_RANGE, - JP_CJK_RARE_RANGE, - - [0xff66, 0xff9f], // Halfwidth katakana - - [0x30fb, 0x30fc], // Katakana punctuation - [0xff61, 0xff65], // Kana punctuation - [0x3000, 0x303f], // CJK punctuation - - [0xff10, 0xff19], // Fullwidth numbers - [0xff21, 0xff3a], // Fullwidth upper case Latin letters - [0xff41, 0xff5a], // Fullwidth lower case Latin letters - - [0xff01, 0xff0f], // Fullwidth punctuation 1 - [0xff1a, 0xff1f], // Fullwidth punctuation 2 - [0xff3b, 0xff3f], // Fullwidth punctuation 3 - [0xff5b, 0xff60], // Fullwidth punctuation 4 - [0xffe0, 0xffee] // Currency markers -]; - - -// Helper functions - -function _jpIsCodePointInRanges(codePoint, ranges) { - for (const [min, max] of ranges) { - if (codePoint >= min && codePoint <= max) { - return true; - } +const jp = (() => { + 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 HIRAGANA_RANGE = [0x3040, 0x309f]; + const KATAKANA_RANGE = [0x30a0, 0x30ff]; + const KANA_RANGES = [HIRAGANA_RANGE, KATAKANA_RANGE]; + + const CJK_COMMON_RANGE = [0x4e00, 0x9fff]; + const CJK_RARE_RANGE = [0x3400, 0x4dbf]; + const CJK_RANGES = [CJK_COMMON_RANGE, CJK_RARE_RANGE]; + + const ITERATION_MARK_CODE_POINT = 0x3005; + + // Japanese character ranges, roughly ordered in order of expected frequency + const JAPANESE_RANGES = [ + HIRAGANA_RANGE, + KATAKANA_RANGE, + + CJK_COMMON_RANGE, + CJK_RARE_RANGE, + + [0xff66, 0xff9f], // Halfwidth katakana + + [0x30fb, 0x30fc], // Katakana punctuation + [0xff61, 0xff65], // Kana punctuation + [0x3000, 0x303f], // CJK punctuation + + [0xff10, 0xff19], // Fullwidth numbers + [0xff21, 0xff3a], // Fullwidth upper case Latin letters + [0xff41, 0xff5a], // Fullwidth lower case Latin letters + + [0xff01, 0xff0f], // Fullwidth punctuation 1 + [0xff1a, 0xff1f], // Fullwidth punctuation 2 + [0xff3b, 0xff3f], // Fullwidth punctuation 3 + [0xff5b, 0xff60], // Fullwidth punctuation 4 + [0xffe0, 0xffee] // Currency markers + ]; + + + // Character code testing functions + + function isCodePointKanji(codePoint) { + return isCodePointInRanges(codePoint, CJK_RANGES); } - return false; -} - - -// Character code testing functions -function jpIsCodePointKanji(codePoint) { - return _jpIsCodePointInRanges(codePoint, JP_CJK_RANGES); -} + function isCodePointKana(codePoint) { + return isCodePointInRanges(codePoint, KANA_RANGES); + } -function jpIsCodePointKana(codePoint) { - return _jpIsCodePointInRanges(codePoint, JP_KANA_RANGES); -} + function isCodePointJapanese(codePoint) { + return isCodePointInRanges(codePoint, JAPANESE_RANGES); + } -function jpIsCodePointJapanese(codePoint) { - return _jpIsCodePointInRanges(codePoint, JP_JAPANESE_RANGES); -} + function isCodePointInRanges(codePoint, ranges) { + for (const [min, max] of ranges) { + if (codePoint >= min && codePoint <= max) { + return true; + } + } + return false; + } -// String testing functions + // String testing functions -function jpIsStringEntirelyKana(str) { - if (str.length === 0) { return false; } - for (const c of str) { - if (!jpIsCodePointKana(c.codePointAt(0))) { - return false; + function isStringEntirelyKana(str) { + if (str.length === 0) { return false; } + for (const c of str) { + if (!isCodePointKana(c.codePointAt(0))) { + return false; + } } + return true; } - return true; -} - -function jpIsStringPartiallyJapanese(str) { - if (str.length === 0) { return false; } - for (const c of str) { - if (jpIsCodePointJapanese(c.codePointAt(0))) { - return true; + + function isStringPartiallyJapanese(str) { + if (str.length === 0) { return false; } + for (const c of str) { + if (isCodePointJapanese(c.codePointAt(0))) { + return true; + } } + return false; } - return false; -} -// Conversion functions + // Conversion functions -function jpKatakanaToHiragana(text) { - let result = ''; - for (const c of text) { - if (wanakana.isKatakana(c)) { - result += wanakana.toHiragana(c); - } else { - result += c; + function convertKatakanaToHiragana(text) { + let result = ''; + for (const c of text) { + if (wanakana.isKatakana(c)) { + result += wanakana.toHiragana(c); + } else { + result += c; + } } - } - return result; -} - -function jpHiraganaToKatakana(text) { - let result = ''; - for (const c of text) { - if (wanakana.isHiragana(c)) { - result += wanakana.toKatakana(c); - } else { - result += c; - } + return result; } - return result; -} - -function jpToRomaji(text) { - return wanakana.toRomaji(text); -} - -function jpConvertReading(expressionFragment, readingFragment, readingMode) { - switch (readingMode) { - case 'hiragana': - return jpKatakanaToHiragana(readingFragment || ''); - case 'katakana': - return jpHiraganaToKatakana(readingFragment || ''); - case 'romaji': - if (readingFragment) { - return jpToRomaji(readingFragment); + function convertHiraganaToKatakana(text) { + let result = ''; + for (const c of text) { + if (wanakana.isHiragana(c)) { + result += wanakana.toKatakana(c); } else { - if (jpIsStringEntirelyKana(expressionFragment)) { - return jpToRomaji(expressionFragment); - } + result += c; } - return readingFragment; - case 'none': - return null; - default: - return readingFragment; + } + + return result; } -} -function jpDistributeFurigana(expression, reading) { - const fallback = [{furigana: reading, text: expression}]; - if (!reading) { - return fallback; + function convertToRomaji(text) { + return wanakana.toRomaji(text); } - let isAmbiguous = false; - const segmentize = (reading2, groups) => { - if (groups.length === 0 || isAmbiguous) { - return []; + function convertReading(expressionFragment, readingFragment, readingMode) { + switch (readingMode) { + case 'hiragana': + return convertKatakanaToHiragana(readingFragment || ''); + case 'katakana': + return convertHiraganaToKatakana(readingFragment || ''); + case 'romaji': + if (readingFragment) { + return convertToRomaji(readingFragment); + } else { + if (isStringEntirelyKana(expressionFragment)) { + return convertToRomaji(expressionFragment); + } + } + return readingFragment; + case 'none': + return null; + default: + return readingFragment; } + } - const group = groups[0]; - if (group.mode === 'kana') { - if (jpKatakanaToHiragana(reading2).startsWith(jpKatakanaToHiragana(group.text))) { - const readingLeft = reading2.substring(group.text.length); - const segs = segmentize(readingLeft, groups.splice(1)); - if (segs) { - return [{text: group.text}].concat(segs); - } + 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; } - } 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) { + } + return result; + } + + function convertHalfWidthKanaToFullWidth(text, sourceMapping) { + let result = ''; + const hasSourceMapping = Array.isArray(sourceMapping); + + // 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; } } - return foundSegments; - } - }; - const groups = []; - let modePrev = null; - for (const c of expression) { - const codePoint = c.codePointAt(0); - const modeCurr = jpIsCodePointKanji(codePoint) || codePoint === JP_ITERATION_MARK_CHAR_CODE ? 'kanji' : 'kana'; - if (modeCurr === modePrev) { - groups[groups.length - 1].text += c; - } else { - groups.push({mode: modeCurr, text: c}); - modePrev = modeCurr; + if (hasSourceMapping && index > 0) { + index = result.length; + const v = sourceMapping.splice(index + 1, 1)[0]; + sourceMapping[index] += v; + } + result += c2; } - } - - const segments = segmentize(reading, groups); - if (segments && !isAmbiguous) { - return segments; - } - return fallback; -} - -function jpDistributeFuriganaInflected(expression, reading, source) { - const output = []; - - let stemLength = 0; - const shortest = Math.min(source.length, expression.length); - const sourceHiragana = jpKatakanaToHiragana(source); - const expressionHiragana = jpKatakanaToHiragana(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 jpDistributeFurigana(stemExpression, stemReading)) { - output.push(segment); - } - if (stemLength !== source.length) { - output.push({text: source.substring(stemLength)}); + return result; } - return output; -} - -function jpConvertHalfWidthKanaToFullWidth(text, sourceMapping) { - let result = ''; - const hasSourceMapping = Array.isArray(sourceMapping); - - // 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 = JP_HALFWIDTH_KATAKANA_MAPPING.get(c); - if (typeof mapping !== 'string') { - result += c; - continue; - } + function convertAlphabeticToKana(text, sourceMapping) { + let part = ''; + let result = ''; + const ii = text.length; - let index = 0; - switch (text.charCodeAt(i + 1)) { - case 0xff9e: // dakuten - index = 1; - break; - case 0xff9f: // handakuten - index = 2; - break; + if (sourceMapping.length === ii) { + sourceMapping.length = ii; + sourceMapping.fill(1); } - let c2 = mapping[index]; - if (index > 0) { - if (c2 === '-') { // invalid - index = 0; - c2 = mapping[0]; + 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 { - ++i; + if (part.length > 0) { + result += convertAlphabeticPartToKana(part, sourceMapping, result.length); + part = ''; + } + result += char; + continue; } + part += String.fromCodePoint(c); } - if (hasSourceMapping && index > 0) { - index = result.length; - const v = sourceMapping.splice(index + 1, 1)[0]; - sourceMapping[index] += v; + if (part.length > 0) { + result += convertAlphabeticPartToKana(part, sourceMapping, result.length); } - result += c2; + return result; } - return result; -} - -function jpConvertNumericTofullWidth(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 convertAlphabeticPartToKana(text, sourceMapping, sourceMappingStart) { + const result = wanakana.toHiragana(text); + + // Generate source mapping + if (Array.isArray(sourceMapping)) { + if (typeof sourceMappingStart !== 'number') { sourceMappingStart = 0; } + 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; + } -function jpConvertAlphabeticToKana(text, sourceMapping) { - let part = ''; - let result = ''; - const ii = text.length; + // Merge characters + const removals = iNext - i - 1; + if (removals > 0) { + let sum = 0; + const vs = sourceMapping.splice(sourceMappingStart + 1, removals); + for (const v of vs) { sum += v; } + sourceMapping[sourceMappingStart] += sum; + } + ++sourceMappingStart; - if (sourceMapping.length === ii) { - sourceMapping.length = ii; - sourceMapping.fill(1); - } + // Empty elements + const additions = resultPosNext - resultPos - 1; + for (let j = 0; j < additions; ++j) { + sourceMapping.splice(sourceMappingStart, 0, 0); + ++sourceMappingStart; + } - 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 += jpToHiragana(part, sourceMapping, result.length); - part = ''; + i = iNext; + resultPos = resultPosNext; } - result += char; - continue; } - part += String.fromCodePoint(c); - } - if (part.length > 0) { - result += jpToHiragana(part, sourceMapping, result.length); + return result; } - return result; -} -function jpToHiragana(text, sourceMapping, sourceMappingStart) { - const result = wanakana.toHiragana(text); - // Generate source mapping - if (Array.isArray(sourceMapping)) { - if (typeof sourceMappingStart !== 'number') { sourceMappingStart = 0; } - 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; - } + // Furigana distribution - // Merge characters - const removals = iNext - i - 1; - if (removals > 0) { - let sum = 0; - const vs = sourceMapping.splice(sourceMappingStart + 1, removals); - for (const v of vs) { sum += v; } - sourceMapping[sourceMappingStart] += sum; + 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 []; } - ++sourceMappingStart; - // Empty elements - const additions = resultPosNext - resultPos - 1; - for (let j = 0; j < additions; ++j) { - sourceMapping.splice(sourceMappingStart, 0, 0); - ++sourceMappingStart; + 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}].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); + } - i = iNext; - resultPos = resultPosNext; + if (stemLength !== source.length) { + output.push({text: source.substring(stemLength)}); } + + return output; } - return result; -} + + // Exports + + return { + isCodePointKanji, + isCodePointKana, + isCodePointJapanese, + isStringEntirelyKana, + isStringPartiallyJapanese, + convertKatakanaToHiragana, + convertHiraganaToKatakana, + convertToRomaji, + convertReading, + convertNumericTofullWidth, + convertHalfWidthKanaToFullWidth, + convertAlphabeticToKana, + distributeFurigana, + distributeFuriganaInflected + }; +})(); -- cgit v1.2.3