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package main
import (
"fmt"
"os"
"strings"
)
// FileHandler handles list file.
type FileHandler struct {
file string
}
// NewFileHandler returns initialized *FileHandler
func NewFileHandler(file string) (*FileHandler, error) {
info, err := os.Stat(file)
if err == nil && info.IsDir() {
return nil, fmt.Errorf("'%s' is dir, please set file path", file)
return &FileHandler{
file: file,
}, nil
// WriteAll writes lines into file
func (f *FileHandler) WriteAll(lines []string) error {
fp, err := os.Create(f.file)
if err != nil {
return err
defer fp.Close()
if _, err := fp.WriteString(strings.Join(lines, "\n")); err != nil {
return fp.Sync()
evalphobia /
minfraud-api-go
