/
file.go
235 lines (198 loc) · 3.73 KB
/
file.go
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package output
import (
"encoding/json"
"errors"
"fmt"
"github.com/MickMake/GoUnify/Only"
"io"
"os"
)
// FileRead Retrieves data from a local file.
func FileRead(fn string, ref interface{}) error {
var err error
for range Only.Once {
if fn == "" {
err = errors.New("empty file")
break
}
var f *os.File
f, err = os.Open(fn)
if err != nil {
if os.IsNotExist(err) {
err = nil
}
break
}
//goland:noinspection GoUnhandledErrorResult,GoDeferInLoop
defer f.Close()
err = json.NewDecoder(f).Decode(&ref)
}
return err
}
// FileWrite Saves data to a file path.
func FileWrite(fn string, ref interface{}, perm os.FileMode) error {
var err error
for range Only.Once {
if fn == "" {
err = errors.New("empty file")
break
}
var f *os.File
f, err = os.OpenFile(fn, os.O_RDWR|os.O_CREATE|os.O_TRUNC, perm)
if err != nil {
err = errors.New(fmt.Sprintf("Unable to write to file %s - %v", fn, err))
break
}
//goland:noinspection GoUnhandledErrorResult,GoDeferInLoop
defer f.Close()
err = json.NewEncoder(f).Encode(ref)
}
return err
}
// PlainFileRead Retrieves data from a local file.
func PlainFileRead(fn string) ([]byte, error) {
var data []byte
var err error
for range Only.Once {
if fn == "" {
err = errors.New("empty file")
break
}
var f *os.File
f, err = os.Open(fn)
if err != nil {
if os.IsNotExist(err) {
err = nil
}
break
}
//goland:noinspection GoUnhandledErrorResult,GoDeferInLoop
defer f.Close()
data, err = io.ReadAll(f)
}
return data, err
}
// PlainFileWrite Saves data to a file path.
func PlainFileWrite(fn string, data []byte, perm os.FileMode) error {
var err error
for range Only.Once {
if fn == "" {
err = errors.New("empty file")
break
}
var f *os.File
f, err = os.OpenFile(fn, os.O_RDWR|os.O_CREATE|os.O_TRUNC, perm)
if err != nil {
err = errors.New(fmt.Sprintf("Unable to write to file %s - %v", fn, err))
break
}
//goland:noinspection GoUnhandledErrorResult,GoDeferInLoop
defer f.Close()
_, err = f.Write(data)
}
return err
}
// FileRemove Removes a file path.
func FileRemove(fn string) error {
var err error
for range Only.Once {
if fn == "" {
err = errors.New("empty file")
break
}
var f os.FileInfo
f, err = os.Stat(fn)
if os.IsNotExist(err) {
err = nil
break
}
if err != nil {
break
}
if f.IsDir() {
err = errors.New("file is a directory")
break
}
err = os.Remove(fn)
}
return err
}
// FileExists - Checks if a file exists.
func FileExists(fn string) bool {
var yes bool
for range Only.Once {
var err error
if fn == "" {
// err = errors.New("empty file")
break
}
var f os.FileInfo
f, err = os.Stat(fn)
if os.IsNotExist(err) {
break
}
if err != nil {
break
}
if f.IsDir() {
// err = errors.New("file is a directory")
break
}
yes = true
}
return yes
}
// DirExists - Checks if a directory exists.
func DirExists(fn string) bool {
var yes bool
for range Only.Once {
var err error
if fn == "" {
// err = errors.New("empty file")
break
}
var f os.FileInfo
f, err = os.Stat(fn)
if os.IsNotExist(err) {
break
}
if err != nil {
break
}
if !f.IsDir() {
// err = errors.New("file is a directory")
break
}
yes = true
}
return yes
}
// Mkdir - Create dir.
func Mkdir(fn string) bool {
var yes bool
for range Only.Once {
var err error
if fn == "" {
// err = errors.New("empty file")
break
}
var f os.FileInfo
f, err = os.Stat(fn)
if os.IsNotExist(err) {
err = os.MkdirAll(fn, 755)
if err != nil {
yes = true
}
break
}
if err != nil {
break
}
if !f.IsDir() {
// err = errors.New("file is a directory")
break
}
yes = true
}
return yes
}