neo-go/_pkg.dev/wire/util/io/io.go
Roman Khimov ddd1d92ff1 pkg: hide it by moving to _pkg.dev
The idea here is to preserve the history of `dev` branch development and its
code when merging with the `master`. Later this code could be moved into the
masters code where appropriate.
2019-08-20 18:39:50 +03:00

17 lines
325 B
Go

package fileutils
import (
"os"
)
// UpdateFile appends a byte slice to a file
func UpdateFile(filename string, data []byte) error {
f, err := os.OpenFile(filename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
dataWNewline := append(data, []byte("\n")...)
_, err = f.Write(dataWNewline)
err = f.Close()
return err
}