| import { detectLanguage, getLanguageInfo, isSameLang, isValidLang } from '@/utils/lang'; |
| import type { Transformer } from './types'; |
|
|
| export const languageTransformer: Transformer = { |
| name: 'language', |
|
|
| transform: async (ctx) => { |
| const primaryLanguage = ctx.primaryLanguage; |
| let result = ctx.content; |
| const attrsMatch = result.match(/<html\b([^>]*)>/i); |
| if (attrsMatch) { |
| let attrs = attrsMatch[1] || ''; |
| const langRegex = / lang="([^"]*)"/i; |
| const xmlLangRegex = / xml:lang="([^"]*)"/i; |
| const xmlLangMatch = attrs.match(xmlLangRegex); |
| const langMatch = attrs.match(langRegex); |
| const docLang = langMatch?.[1] || xmlLangMatch?.[1]; |
| if (!isValidLang(docLang) || !isSameLang(docLang, primaryLanguage)) { |
| const mainContent = result.replace(/<[^>]+>/g, ' '); |
| const lang = |
| isValidLang(primaryLanguage) && primaryLanguage !== 'en' |
| ? primaryLanguage |
| : detectLanguage(mainContent); |
| const languageInfo = getLanguageInfo(lang || ''); |
| const newLangAttr = ` lang="${lang}"`; |
| const newXmlLangAttr = ` xml:lang="${lang}"`; |
| const dirAttr = languageInfo?.direction === 'rtl' ? ' dir="rtl"' : ''; |
| attrs = langMatch ? attrs.replace(langRegex, newLangAttr) : attrs + newLangAttr + dirAttr; |
| attrs = xmlLangMatch |
| ? attrs.replace(xmlLangRegex, newXmlLangAttr) |
| : attrs + newXmlLangAttr + dirAttr; |
| result = result.replace(attrsMatch[0], `<html${attrs}>`); |
| } |
| } else { |
| const lang = |
| isValidLang(primaryLanguage) && primaryLanguage !== 'en' |
| ? primaryLanguage |
| : detectLanguage(result.replace(/<[^>]+>/g, ' ')); |
| const languageInfo = getLanguageInfo(lang || ''); |
| const dirAttr = languageInfo?.direction === 'rtl' ? ' dir="rtl"' : ''; |
| const newAttrs = ` lang="${lang}" xml:lang="${lang}" ${dirAttr}`; |
| result = result.replace(/<html>/i, `<html${newAttrs}>`); |
| } |
| return result; |
| }, |
| }; |
|
|
