Golang : Read binary file into memory

Reading a binary file content into memory for further manipulation is easy with Go. In this tutorial, we will show how to read a binary file into buffer(memory). Go has a standard library package (http://golang.org/pkg/bufio/) to handle this kind of requirement.

The code below will just show you how to read the file content into memory. What you want to do next with the file content is up to you.

readbinaryfile.go

 package main

  import (
 "os"
 "bufio"
  )

  func main() {

 file, err := os.Open("binary.dat")

 if err != nil {
 fmt.Println(err)
 return
 }

 defer file.Close()

 info, err := file.Stat()
 if err != nil {
 return nil, err
 }

 // calculate the bytes size
 var size int64 = info.Size()
 bytes := make([]byte, size)

 // read into buffer
 buffer := bufio.NewReader(file)
 _,err = buffer.Read(bytes)
 }

Reference :

https://www.socketloop.com/tutorials/golang-read-file