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

  See also : Golang : Read file with ioutil





By Adam Ng

IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.


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