v3-json-canvas-cli/lib/utils/utils.js

这是一个帮助你快速创建vue的可视化拖拽项目的CLI

const path  = require("path");
const fs  = require("fs");
const ejs  = require("ejs")
const program = require('commander')


// 编译ejs模板和数据，返回字符串
const compile = (template, data) => {
  const templatePath = path.resolve(__dirname, `../templates/${template}`)
  return new Promise((resolve, reject) => {
    ejs.renderFile(templatePath, {data}, {}, (err, res) => {
      if(err) {
        console.log(err);
        reject(err)
        return
      }
      resolve(res)
    })
  })
}

// 写入文件
const writeToFile = (path, content) => {
  if(fs.existsSync(path) && !program.opts().force) {
    return console.error('文件已经存在！无法再次创建。强制执行操作请运行：v3-json-canvas <command> <name> -f');
  }
  return fs.promises.writeFile(path, content)
}

// 创建文件夹(多层嵌套也可以创建)
const createDeepFolder = (dest) => {
  return new Promise((resolve, reject) => {
    try {
      const arr = dest.split("/")
      const resList = arr.map((item, i) => {
        return path.resolve(arr.slice(0, i+1).join('/'))
      })
      resList.forEach(item => {
        const info = fs.existsSync(item)
        if(info === false) fs.mkdirSync(item)
      })
      resolve()
    } catch (error) {
      reject(error)
    }
  })
}

module.exports = {
  compile,
  writeToFile,
  createDeepFolder
}