text: const fs = require("fs");
  const path = require("path");
  exports.read_file_ut8= function(src,func){
      fs.readFile(src, "utf8",function(err,data_s){
          let  ref_data = {
              is_file_exists : false,
              data : "",
              file_name:src
          }
         
          if(err == null){
              let  ref_data = {
                  is_file_exists : true,
                  data : data_s,
                  file_name:src
              }
              func(ref_data)
          }else{
              func(ref_data)
          }
              
          
          
      });
  }
  exports.readStream= function(src,func){
      
      try{
          var list_content = [];
          var data_readstream = fs.createReadStream(src);
                      
          data_readstream.on('data', function (chunk) {
              list_content.push(chunk);
              func({"per_line_data":chunk.toString()});
          });
          data_readstream.on("end",function(){
  
              func({"complete_data":list_content.join().toString()});
          })
      }
      catch(e){
          func({"error":e});
      }
      
  }