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|
package fileop
import (
"crypto/sha256"
"fmt"
"io"
"os"
"path/filepath"
)
type WalkMode int
const (
Folder WalkMode = iota
File
FileFolder
)
func WalkFolder(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, _ := file.Stat()
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 CalculateSHA256(r io.Reader) (string, error) {
h := sha256.New()
if _, err := io.Copy(h, r); err != nil {
return "", err
}
shaString := fmt.Sprintf("%x", h.Sum(nil))
return shaString, nil
}
type MoveCommand struct {
Source string
Destination string
}
func Move() chan<- *MoveCommand {
c := make(chan *MoveCommand)
go func(chan *MoveCommand) {
for cmd := range c {
// TODO: add error handling
err := os.Rename(cmd.Source, cmd.Destination)
if err != nil {
fmt.Println(err.Error())
}
}
}(c)
return c
}
func IsEmpty(name string) (bool, error) {
f, err := os.Open(name)
if err != nil {
return false, err
}
defer f.Close()
_, err = f.Readdirnames(1)
if err == io.EOF {
return true, nil
}
return false, err
}
|
