179 lines
7.3 KiB
JavaScript
179 lines
7.3 KiB
JavaScript
/**
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* 将extract插件扫描的文件编译为语言文件
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*
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* 编译后的语言文件用于运行环境使用
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*
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* 编译原理如下：
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*
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*
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* 编译后会在目标文件夹输出:
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*
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* - languages
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* translates
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* - en.json
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* - cn.json
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* - ...
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* idMap.js // id映射列表
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* settings.js // 配置文件
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* cn.js // 中文语言包
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* en.js // 英文语言包
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* [lang].js // 其他语言包
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* package.json // 包信息，用来指定包类型，以便在nodejs中能够正确加载
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*
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* @param {*} opts
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*/
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const readJson = require("readjson")
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const glob = require("glob")
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const createLogger = require("logsets")
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const path = require("path")
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const { t,importModule,findModuleType,getCurrentPackageJson} = require("./utils")
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const fs = require("fs")
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const logger = createLogger()
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const artTemplate = require("art-template")
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function normalizeCompileOptions(opts={}) {
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let options = Object.assign({
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moduleType:"auto" // 指定编译后的语言文件的模块类型，取值common,cjs,esm,es
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}, opts)
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if(options.moduleType==="es") options.moduleType = "esm"
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if(options.moduleType==="cjs") options.moduleType = "commonjs"
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if(!["auto","commonjs","cjs","esm","es"].includes(options.moduleType)) options.moduleType = "esm"
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return options;
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}
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module.exports =async function compile(langFolder,opts={}){
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const options = normalizeCompileOptions(opts);
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let { moduleType } = options;
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if(moduleType==="auto"){
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moduleType = findModuleType(langFolder)
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}
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const projectPackageJson = getCurrentPackageJson(langFolder)
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// 加载多语言配置文件
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const settingsFile = path.join(langFolder,"settings.js")
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try{
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// 读取多语言配置文件
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const langSettings = await importModule(settingsFile)
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let { languages,defaultLanguage,activeLanguage,namespaces } = langSettings
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logger.log(t("支持的语言\t: {}"),languages.map(item=>`${item.title}(${item.name})`).join(","))
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logger.log(t("默认语言\t: {}"),defaultLanguage)
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logger.log(t("激活语言\t: {}"),activeLanguage)
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logger.log(t("名称空间\t: {}"),Object.keys(namespaces).join(","))
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logger.log(t("模块类型\t: {}"),moduleType)
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logger.log("")
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logger.log(t("编译结果输出至：{}"),langFolder)
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// 1. 合并生成最终的语言文件
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let messages = {} ,msgId =1
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glob.sync(path.join(langFolder,"translates/*.json")).forEach(file=>{
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try{
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let msg = readJson.sync(file)
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Object.entries(msg).forEach(([msg,langs])=>{
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if(msg in messages){
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Object.assign(messages[msg],langs)
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}else{
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messages[msg] = langs
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}
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})
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}catch(e){
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logger.log(t("读取语言文件{}失败:{}"),file,e.message)
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}
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})
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logger.log(t(" - 共合成{}条语言包文本"),Object.keys(messages).length)
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// 2. 为每一个文本内容生成一个唯一的id
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let messageIds = {}
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Object.entries(messages).forEach(([msg,langs])=>{
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langs.$id = msgId++
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messageIds[msg] = langs.$id
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})
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// 3. 为每一个语言生成对应的语言文件
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languages.forEach(lang=>{
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let langMessages = {}
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Object.entries(messages).forEach(([message,translatedMsgs])=>{
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langMessages[translatedMsgs.$id] = lang.name in translatedMsgs ? translatedMsgs[lang.name] : message
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})
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const langFile = path.join(langFolder,`${lang.name}.js`)
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// 为每一种语言生成一个语言文件
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if(moduleType==="esm"){
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fs.writeFileSync(langFile,`export default ${JSON.stringify(langMessages,null,4)}`)
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}else{
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fs.writeFileSync(langFile,`module.exports = ${JSON.stringify(langMessages,null,4)}`)
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}
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logger.log(t(" - 语言包文件: {}"),path.basename(langFile))
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})
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// 4. 生成id映射文件
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const idMapFile = path.join(langFolder,"idMap.js")
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if(moduleType==="esm"){
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fs.writeFileSync(idMapFile,`export default ${JSON.stringify(messageIds,null,4)}`)
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}else{
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fs.writeFileSync(idMapFile,`module.exports = ${JSON.stringify(messageIds,null,4)}`)
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}
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logger.log(t(" - idMap文件: {}"),path.basename(idMapFile))
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const templateContext = {
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scopeId:projectPackageJson.name,
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languages,
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defaultLanguage,
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activeLanguage,
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namespaces,
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moduleType,
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JSON
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}
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// 5 . 生成编译后的格式化函数文件
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const formattersFile = path.join(langFolder,"formatters.js")
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if(!fs.existsSync(formattersFile)){
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const formattersContent = artTemplate(path.join(__dirname,"templates","formatters.js"), templateContext )
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fs.writeFileSync(formattersFile,formattersContent)
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logger.log(t(" - 格式化器:{}"),path.basename(formattersFile))
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}else{ // 格式化器如果存在，则需要更改对应的模块类型
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let formattersContent = fs.readFileSync(formattersFile,"utf8").toString()
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if(moduleType == "esm"){
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formattersContent = formattersContent.replaceAll(/\s*module.exports\s*\=/g,"export default ")
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formattersContent = formattersContent.replaceAll(/\s*module.exports\./g,"export ")
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}else{
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formattersContent = formattersContent.replaceAll(/^\s*export\s*default\s*/g,"module.exports = ")
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formattersContent = formattersContent.replaceAll(/^\s*export\s*/g,"module.exports.")
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}
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fs.writeFileSync(formattersFile,formattersContent)
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logger.log(t(" - 更新格式化器:{}"),path.basename(formattersFile))
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}
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// 6. 生成编译后的访问入口文件
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const entryFile = path.join(langFolder,"index.js")
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const entryContent = artTemplate(path.join(__dirname,"templates","entry.js"), templateContext )
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fs.writeFileSync(entryFile,entryContent)
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logger.log(t(" - 访问入口文件: {}"),path.basename(entryFile))
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// 7. 重新生成settings ,需要确保settings.js匹配模块类型
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if(moduleType==="esm"){
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fs.writeFileSync(settingsFile,`export default ${JSON.stringify(langSettings,null,4)}`)
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}else{
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fs.writeFileSync(settingsFile,`module.exports = ${JSON.stringify(langSettings,null,4)}`)
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}
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// 8. 生成package.json
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const packageJsonFile = path.join(langFolder,"package.json")
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let packageJson = {}
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if(moduleType==="esm"){
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packageJson = {
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license:"MIT",
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type:"module",
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}
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}else{
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packageJson = {
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license:"MIT",
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}
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}
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fs.writeFileSync(packageJsonFile,JSON.stringify(packageJson,null,4))
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}catch(e){
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logger.log(t("加载多语言配置文件<{}>失败: {} "),settingsFile,e.message)
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}
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} |