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-rw-r--r--ext/bg/js/japanese.js770
1 files changed, 396 insertions, 374 deletions
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
+ };
+})();