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|
package storage
import (
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"porg/pipe"
)
type FileSystem struct {
}
func NewFileSystem() *FileSystem {
return &FileSystem{}
}
func (fs *FileSystem) Get(path string) (io.Reader, error) {
return os.Open(path)
}
func (fs *FileSystem) Walk(folder string, walkMode WalkMode) <-chan string {
c := make(chan string)
go func(folder string, c chan string) {
filepath.Walk(folder, func(path string, info os.FileInfo, err error) error {
file, _ := os.Open(path)
defer file.Close()
fileInfo, err := file.Stat()
if err != nil {
fmt.Println("@@@@ ", err.Error())
return nil
}
switch walkMode {
case Folder:
if fileInfo.IsDir() {
c <- path
}
case File:
if !fileInfo.IsDir() {
c <- path
}
case FileFolder:
c <- path
}
return nil
})
close(c)
}(folder, c)
return c
}
func (fs *FileSystem) Put(path string, f io.Reader) error {
fo, err := os.Create(path)
if err != nil {
return err
}
if _, err := io.Copy(fo, f); err != nil {
return err
}
return nil
}
func (fs *FileSystem) List(path string) ([]string, error) {
files, err := ioutil.ReadDir(path)
if err != err {
return nil, err
}
findPath := func(f os.FileInfo) string {
return path + "/" + f.Name()
}
return pipe.Map(findPath, files), nil
}
func (fs *FileSystem) Move(src string, dst string) error {
return os.Rename(src, dst)
}
func (fs *FileSystem) Copy(src string, dst string) error {
in, err := os.Open(src)
if err != nil {
return err
}
defer in.Close()
out, err := os.Create(dst)
if err != nil {
return err
}
defer out.Close()
_, err = io.Copy(out, in)
if err != nil {
return err
}
return out.Close()
}
func (fs *FileSystem) Exists(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if errors.Is(err, os.ErrNotExist) {
return false, nil
}
return false, err
}
func (fs *FileSystem) Mkdir(path string) error {
return os.MkdirAll(path, 0777)
}
|
