diff options
Diffstat (limited to 'ext/js/language/sandbox/japanese-util.js')
| -rw-r--r-- | ext/js/language/sandbox/japanese-util.js | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/ext/js/language/sandbox/japanese-util.js b/ext/js/language/sandbox/japanese-util.js index 9b58d255..a7542e79 100644 --- a/ext/js/language/sandbox/japanese-util.js +++ b/ext/js/language/sandbox/japanese-util.js @@ -297,20 +297,27 @@ const JapaneseUtil = (() => { return this._wanakana !== null; } - convertKatakanaToHiragana(text) { + convertKatakanaToHiragana(text, keepProlongedSoundMarks=false) { let result = ''; const offset = (HIRAGANA_CONVERSION_RANGE[0] - KATAKANA_CONVERSION_RANGE[0]); for (let char of text) { const codePoint = char.codePointAt(0); - if (codePoint === KATAKANA_SMALL_KA_CODE_POINT || codePoint === KATAKANA_SMALL_KE_CODE_POINT) { - // No change - } else if (codePoint === KANA_PROLONGED_SOUND_MARK_CODE_POINT) { - if (result.length > 0) { - const char2 = getProlongedHiragana(result[result.length - 1]); - if (char2 !== null) { char = char2; } - } - } else if (isCodePointInRange(codePoint, KATAKANA_CONVERSION_RANGE)) { - char = String.fromCodePoint(codePoint + offset); + switch (codePoint) { + case KATAKANA_SMALL_KA_CODE_POINT: + case KATAKANA_SMALL_KE_CODE_POINT: + // No change + break; + case KANA_PROLONGED_SOUND_MARK_CODE_POINT: + if (!keepProlongedSoundMarks && result.length > 0) { + const char2 = getProlongedHiragana(result[result.length - 1]); + if (char2 !== null) { char = char2; } + } + break; + default: + if (isCodePointInRange(codePoint, KATAKANA_CONVERSION_RANGE)) { + char = String.fromCodePoint(codePoint + offset); + } + break; } result += char; } |