github.com/gogo/protobuf@v1.3.2/gogoreplace/main.go (about)

     1  package main
     2  
     3  import (
     4  	"bytes"
     5  	"fmt"
     6  	"io/ioutil"
     7  	"os"
     8  )
     9  
    10  func main() {
    11  	args := os.Args
    12  	if len(args) != 4 {
    13  		fmt.Println("gogoreplace wants three arguments")
    14  		fmt.Println("	gogoreplace oldsubstring newsubstring filename")
    15  		os.Exit(1)
    16  	}
    17  	data, err := ioutil.ReadFile(args[3])
    18  	if err != nil {
    19  		panic(err)
    20  	}
    21  	data = bytes.Replace(data, []byte(args[1]), []byte(args[2]), -1)
    22  	if err := ioutil.WriteFile(args[3], data, 0666); err != nil {
    23  		panic(err)
    24  	}
    25  }