readline-chunk

读取文件块，返回以换行为单位的buffer数组。此包的目的是读取完整具有换行结尾的数据，不读最后一行非换行数据。

install

npm install readline-chunk

test

cd test && npm run test

---

init

new linechunk(fd,[option])

option

• fd - 文件描述符
• option
  • chunkSize - 一次pop读取的文件二进制流大小 default:1024
  • beginPosition - readfile begin position

---

pop

从文件读取chunksize大小数据，返回buffer数组，数组成员为单行数据，buffer类型

---

close

所释放资源

example

const LineChunk =  require("readline-chunk");
const fs =require("fs");
const fd = fs.openSync("./test/examplefile/readme.txt","r"); 
const lineChunk = new LineChunk(fd,{chunkSize:10});
let data = lineChunk.pop(); 
if(data.length > 0){
  const bufferall = Buffer.from(data);
  console.log(bufferall.toString("utf-8"));
}