ms/packages/i18n/src/index.ts

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/// <reference types="@ccms/nashorn" />
import * as yaml from 'js-yaml'
const File = Java.type("java.io.File")
const separatorChar = File.separatorChar
type TranslateParam = { [key: string]: any }
declare global {
interface Console {
i18n(name: string, param?: TranslateParam)
}
}
type TranslateContent = {
langMap: TranslateParam,
fallbackMap?: TranslateParam
}
export class Translate {
private root = '';
private langMap = {};
private fallbackMap = {};
constructor(root: string | TranslateContent) {
if (typeof root == 'string') {
this.root = root
} else {
this.langMap = root.langMap
this.fallbackMap = root.fallbackMap || {}
}
}
translate(name: string, param?: TranslateParam) {
let langText: string = this.langMap[name] || this.fallbackMap[name]
if (!langText) { return '[WARN] @ccms/i18n miss lang translate: ' + name }
for (const key in param) {
langText = langText.replace(new RegExp("{" + key + "}", 'gm'), param[key])
}
return langText
}
initialize(lang: string = 'zh_cn', fallback: string = 'zh_cn') {
this.langMap = this.readYamlFile(this.root, lang) || this.readYamlFile(this.concat(__dirname, '..'), lang)
this.fallbackMap = this.readYamlFile(this.root, fallback) || this.readYamlFile(this.concat(__dirname, '..'), fallback)
console.i18n = (name: string, param?: TranslateParam) => {
console.log(this.translate(name, param))
}
console.i18n('ms.i18n.completed')
}
readYamlFile(dir: string, name: string) {
let langFile = this.concat(dir, 'languages', name + '.yml')
return this.exists(langFile) && yaml.load(base.read(langFile))
}
concat(...args: string[]) {
return args.join(separatorChar)
}
exists(path: string) {
return new File(path).exists()
}
}
let systemTranslate = new Translate(root)
export default {
initialize: systemTranslate.initialize.bind(systemTranslate),
translate: systemTranslate.translate.bind(systemTranslate)
}