81 lines
1.6 KiB
JavaScript
81 lines
1.6 KiB
JavaScript
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/**
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* nodeJS 模板引擎(依赖doJS框架)
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* @authors yutent (yutent@doui.cc)
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* @date 2015-12-28 13:57:12
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*
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*/
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'use strict'
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require('es.shim')
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const Tool = require('./lib/tool')
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const md5 = require('./lib/md5')
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class Smarty {
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constructor(opt) {
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this.opt = { cache: true }
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if (opt) {
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Object.assign(this.opt, opt)
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}
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this.tool = new Tool(this.opt)
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this.data = {} // 预定义的变量储存
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this.cache = {} // 模块缓存
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}
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config(key, val) {
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this.tool.config(key, val)
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}
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/**
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* 定义变量
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* @param {Str} key 变量名
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* @param {any} val 值
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*/
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assign(key, val) {
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key += ''
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if (!key) {
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return this
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}
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this.data[key] = val
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return this
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}
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/**
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* [render 模板渲染]
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* @param {String} tpl 模板路径
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* @param {String} uuid 唯一标识
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* @return {Promise} 返回一个Promise对象
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*/
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render(tpl = '', uuid = '') {
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if (!this.tool.opt.path) {
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console.log(this.tool)
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throw new Error('Smarty engine must define path option')
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}
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if (!tpl) {
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return Promise.reject('argument[tpl] can not be empty')
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}
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if (!/\.tpl$/.test(tpl)) {
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tpl += '.tpl'
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}
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let cacheId = md5(tpl + uuid)
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if (this.opt.cache && this.cache[cacheId]) {
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return Promise.resolve(this.cache[cacheId])
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}
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this.cache[cacheId] = this.tool.__tpl__(tpl)
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try {
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this.cache[cacheId] = this.tool.parse(this.cache[cacheId], this.data)
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return Promise.resolve(this.cache[cacheId])
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} catch (err) {
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return Promise.reject(err)
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}
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}
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}
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module.exports = Smarty
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