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lang.js
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lang.js
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import BLOG from '@/blog.config'
import { getQueryVariable, isBrowser, mergeDeep } from '@/lib/utils'
import enUS from './lang/en-US'
import frFR from './lang/fr-FR'
import jaJP from './lang/ja-JP'
import trTR from './lang/tr-TR'
import zhCN from './lang/zh-CN'
import zhHK from './lang/zh-HK'
import zhTW from './lang/zh-TW'
import { extractLangPrefix } from './utils/pageId'
/**
* 在这里配置所有支持的语言
* 国家-地区
*/
const LANGS = {
'en-US': enUS,
'zh-CN': zhCN,
'zh-HK': zhHK,
'zh-TW': zhTW,
'fr-FR': frFR,
'tr-TR': trTR,
'ja-JP': jaJP
}
export default LANGS
/**
* 获取当前语言字典
* 如果匹配到完整的“国家-地区”语言,则显示国家的语言
* @returns 不同语言对应字典
*/
export function generateLocaleDict(langString) {
const supportedLocales = Object.keys(LANGS)
let userLocale
// 将语言字符串拆分为语言和地区代码,例如将 "zh-CN" 拆分为 "zh" 和 "CN"
const [language, region] = langString?.split(/[-_]/)
// 优先匹配语言和地区都匹配的情况
const specificLocale = `${language}-${region}`
if (supportedLocales.includes(specificLocale)) {
userLocale = LANGS[specificLocale]
}
// 然后尝试匹配只有语言匹配的情况
if (!userLocale) {
const languageOnlyLocales = supportedLocales.filter(locale =>
locale.startsWith(language)
)
if (languageOnlyLocales.length > 0) {
userLocale = LANGS[languageOnlyLocales[0]]
}
}
// 如果还没匹配到,则返回最接近的语言包
if (!userLocale) {
const fallbackLocale = supportedLocales.find(locale =>
locale.startsWith('en')
)
userLocale = LANGS[fallbackLocale]
}
return mergeDeep({}, LANGS['en-US'], userLocale)
}
/**
* 站点翻译
* 借助router中的locale机制,根据locale自动切换对应的语言
*/
export function initLocale(locale, changeLang, updateLocale) {
if (isBrowser) {
// 根据router中的locale对象判断当前语言:表现为前缀中包含 zh、en 等。
let pathLocaleLang = null
if (locale === 'en' || locale === 'zh') {
pathLocaleLang = locale === 'en' ? 'en-US' : 'zh-CN'
}
// 如果有query参数切换语言则优先
const queryLang =
getQueryVariable('locale') || getQueryVariable('lang') || pathLocaleLang
if (queryLang) {
const match = queryLang.match(/[a-zA-Z]{2}(?:-[a-zA-Z]{2})?/)
if (match) {
const targetLang = match[0]
changeLang(targetLang)
const targetLocale = generateLocaleDict(targetLang)
updateLocale(targetLocale)
}
}
}
}
/**
* 读取语言
* @returns {*}
*/
export const loadLangFromLocalStorage = () => {
return localStorage.getItem('lang')
}
/**
* 保存语言
* @param newTheme
*/
export const saveLangToLocalStorage = lang => {
localStorage.setItem('lang', lang)
}
/**
* 检测用户的预研偏好,跳转至对应的多语言网站
* @param {*} lang
* @param {*} pageId
*
*/
export const redirectUserLang = (lang, pageId) => {
if (!isBrowser) {
return
}
// 只在首页处理跳转
if (!window.location.pathname === '/') {
return
}
// 没有开启多语言
if (BLOG.NOTION_PAGE_ID.indexOf(',') < 0) {
return
}
const userLang =
getQueryVariable('locale') ||
getQueryVariable('lang') ||
window?.navigator?.language
const siteIds = pageId?.split(',') || []
// 默认是进首页; 如果检测到有一个多语言匹配了用户浏览器,则自动跳转过去
for (let index = 0; index < siteIds.length; index++) {
const siteId = siteIds[index]
const prefix = extractLangPrefix(siteId)
if (prefix === userLang) {
if (window.location.pathname.indexOf(prefix) < 0) {
window.location.href = '/' + prefix
}
}
}
}