/
utils.go
177 lines (145 loc) · 2.93 KB
/
utils.go
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package main
import (
"bufio"
"encoding/json"
"io/ioutil"
"os"
"path/filepath"
"io"
"fmt"
"path"
errors "github.com/joaosoft/errors"
)
func GetEnv() string {
env := os.Getenv("env")
if env == "" {
env = "local"
}
return env
}
func Exists(file string) bool {
if _, err := os.Stat(file); err != nil {
if os.IsNotExist(err) {
return false
}
}
return true
}
func ReadFile(file string, obj interface{}) ([]byte, error) {
var err error
if !Exists(file) {
return nil, errors.New(errors.LevelError, 0, "file don't exist")
}
f, err := os.Open(file)
if err != nil {
return nil, err
}
data, err := ioutil.ReadAll(f)
if err != nil {
return nil, err
}
if obj != nil {
if err := json.Unmarshal(data, obj); err != nil {
return nil, err
}
}
return data, nil
}
func ReadFileLines(file string) ([]string, error) {
lines := make([]string, 0)
if !Exists(file) {
return nil, errors.New(errors.LevelError, 0, "file don't exist")
}
f, err := os.Open(file)
if err != nil {
return nil, err
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
lines = append(lines, scanner.Text())
}
if err := scanner.Err(); err != nil {
return nil, err
}
return lines, nil
}
func WriteFile(file string, obj interface{}) error {
if !Exists(file) {
return errors.New(errors.LevelError, 0, "file don't exist")
}
jsonBytes, _ := json.MarshalIndent(obj, "", " ")
if err := ioutil.WriteFile(file, jsonBytes, 0644); err != nil {
return err
}
return nil
}
// CopyFile copies a single file from src to dst
func CopyFile(src, dst string) error {
var err error
var srcfd *os.File
var dstfd *os.File
var srcinfo os.FileInfo
if srcfd, err = os.Open(src); err != nil {
return err
}
defer srcfd.Close()
if dstfd, err = os.Create(dst); err != nil {
return err
}
defer dstfd.Close()
if _, err = io.Copy(dstfd, srcfd); err != nil {
return err
}
if srcinfo, err = os.Stat(src); err != nil {
return err
}
return os.Chmod(dst, srcinfo.Mode())
}
// CopyDir copies a whole directory recursively
func CopyDir(src string, dst string) error {
var err error
var fds []os.FileInfo
var srcinfo os.FileInfo
if srcinfo, err = os.Stat(src); err != nil {
return err
}
if err = os.MkdirAll(dst, srcinfo.Mode()); err != nil {
return err
}
if fds, err = ioutil.ReadDir(src); err != nil {
return err
}
for _, fd := range fds {
srcfp := path.Join(src, fd.Name())
dstfp := path.Join(dst, fd.Name())
if fd.IsDir() {
if err = CopyDir(srcfp, dstfp); err != nil {
fmt.Println(err)
}
} else {
if err = CopyFile(srcfp, dstfp); err != nil {
fmt.Println(err)
}
}
}
return nil
}
func RemoveAll(dir string) error {
d, err := os.Open(dir)
if err != nil {
return err
}
defer d.Close()
names, err := d.Readdirnames(-1)
if err != nil {
return err
}
for _, name := range names {
err = RemoveAll(filepath.Join(dir, name))
if err != nil {
return err
}
}
return nil
}