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file_system.go
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file_system.go
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// Copyright 2022 Clivern. All rights reserved.
// Use of this source code is governed by the MIT
// license that can be found in the LICENSE file.
package service
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
)
// FileSystem struct
type FileSystem struct {
}
// NewFileSystem creates a new instance
func NewFileSystem() *FileSystem {
return &FileSystem{}
}
// FileExists reports whether the named file exists
func (fs *FileSystem) FileExists(path string) bool {
if fi, err := os.Stat(path); err == nil {
if fi.Mode().IsRegular() {
return true
}
}
return false
}
// DirExists reports whether the dir exists
func (fs *FileSystem) DirExists(path string) bool {
if fi, err := os.Stat(path); err == nil {
if fi.Mode().IsDir() {
return true
}
}
return false
}
// EnsureDir ensures that directory exists
func (fs *FileSystem) EnsureDir(dirName string, mode int) error {
err := os.MkdirAll(dirName, os.FileMode(mode))
if err == nil || os.IsExist(err) {
return nil
}
return err
}
// DeleteDir deletes a dir
func (fs *FileSystem) DeleteDir(dir string) error {
err := os.RemoveAll(dir)
if err != nil {
return err
}
return nil
}
// EnsureTrailingSlash ensure there is a trailing slash
func (fs *FileSystem) EnsureTrailingSlash(dir string) string {
return fmt.Sprintf(
"%s%s",
strings.TrimRight(dir, string(os.PathSeparator)),
string(os.PathSeparator),
)
}
// RemoveTrailingSlash removes any trailing slash
func (fs *FileSystem) RemoveTrailingSlash(dir string) string {
return strings.TrimRight(dir, string(os.PathSeparator))
}
// RemoveStartingSlash removes any starting slash
func (fs *FileSystem) RemoveStartingSlash(dir string) string {
return strings.TrimLeft(dir, string(os.PathSeparator))
}
// ClearDir removes all files and sub dirs
func (fs *FileSystem) ClearDir(dir string) error {
files, err := filepath.Glob(filepath.Join(dir, "*"))
if err != nil {
return err
}
for _, file := range files {
err = os.RemoveAll(file)
if err != nil {
return err
}
}
return nil
}
// StoreFile stores a file content
func (fs *FileSystem) StoreFile(path, content string) error {
dir := filepath.Dir(path)
err := os.MkdirAll(dir, 0775)
if err != nil {
return err
}
f, err := os.Create(path)
if err != nil {
return err
}
defer f.Close()
_, err = f.WriteString(content)
return err
}
// PathExists reports whether the path exists
func (fs *FileSystem) PathExists(path string) bool {
if _, err := os.Stat(path); os.IsNotExist(err) {
return false
}
return true
}
// DeleteFile deletes a file
func (fs *FileSystem) DeleteFile(path string) error {
return os.Remove(path)
}
// ReadFile get the file content
func (fs *FileSystem) ReadFile(path string) (string, error) {
data, err := ioutil.ReadFile(path)
if err != nil {
return "", err
}
return string(data), nil
}
// Rename rename a dir or a file
func (fs *FileSystem) Rename(old, new string) error {
return os.Rename(old, new)
}
// GetSubDirectoriesNames gets a list of sub directories
func (fs *FileSystem) GetSubDirectoriesNames(path string) ([]string, error) {
result := []string{}
files, err := ioutil.ReadDir(path)
if err != nil {
return result, err
}
for _, fileInfo := range files {
if fileInfo.IsDir() {
result = append(result, fileInfo.Name())
}
}
return result, nil
}
// GetDirectoryFileNames get a list of files inside a directory
func (fs *FileSystem) GetDirectoryFileNames(path string) ([]string, error) {
result := []string{}
files, err := ioutil.ReadDir(path)
if err != nil {
return result, err
}
for _, fileInfo := range files {
if !fileInfo.IsDir() {
result = append(result, fileInfo.Name())
}
}
return result, nil
}
// ChangePermission changes the file permission
func (fs *FileSystem) ChangePermission(path string, permisson os.FileMode) {
os.Chmod(path, permisson)
}