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cleaner.go
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cleaner.go
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package main
import (
"fmt"
"os"
. "github.com/logrusorgru/aurora"
)
type Cleaner struct {
outputer IOutputer
os OS
}
func NewCleaner(outputer IOutputer, os OS) Cleaner {
return Cleaner{
outputer: outputer,
os: os,
}
}
func (c *Cleaner) CleanDeadSymlinks(dirPath string) error {
dir, err := c.os.Open(dirPath)
if err != nil {
return err
}
defer func() {
dirCloseErr := dir.Close()
if err == nil {
err = dirCloseErr
}
}()
dirInfo, err := dir.Stat()
if err != nil {
return err
}
if !dirInfo.IsDir() {
return fmt.Errorf("Specified dirPath %s is not a directory", dirPath)
}
files, err := dir.Readdir(0)
if err != nil {
return err
}
return c.cleanFiles(dirPath, files)
}
// Checks each file, if it is a bad symlink - removes it.
func (c *Cleaner) cleanFiles(dirPath string, files []os.FileInfo) error {
removedAny := false
for _, fileInfo := range files {
if fileInfo.Mode()&os.ModeSymlink != os.ModeSymlink {
continue
}
filepath := dirPath + "/" + fileInfo.Name()
_, err := c.os.Stat(filepath)
if err == nil {
// symlink is correct
continue
}
if !os.IsNotExist(err) {
return err
}
// file not exists => bad symlink, remove it
if err := c.os.Remove(filepath); err != nil {
return err
}
if !removedAny {
removedAny = true
c.outputer.OutInfo("Cleaning dead symlinks...")
}
c.outputer.OutInfo(" %s %s has been removed (broken symlink)", Green("✓"), Brown(filepath))
}
return nil
}