taitan/utils.js

小程序开发辅助工具

const fs = require('fs')
const path = require('path')
const utils = {
  readFileSync(fpath){
    let str = fs.readFileSync(fpath,{encoding:'utf-8'})
    let json = JSON.parse(str)
    return {
      str,
      json
    }
  },
  localData(key,payload){
    let localPath = path.resolve(__dirname,'./localData.json')
    if(!fs.existsSync(localPath)){
      fs.writeFileSync(localPath,JSON.stringify({}))
    }
    let localDataStr = fs.readFileSync(localPath,{encoding:'utf-8'})
    if(!key&&!payload){
      //获取全部的localData
      try {
        return JSON.parse(localDataStr)
      } catch (error) {
        return {}
      }
    }else if(!payload){
      try{
        return JSON.parse(localDataStr)[key]
      } catch (error) {
        return null
      }
    }else{
      try {
        let obj = JSON.parse(localDataStr)
        obj[key] = payload
        fs.writeFileSync(localPath,JSON.stringify(obj,null,'\t'))
      } catch (error) {}
    }
  }
}
module.exports = utils