func traverse(gFolder *gdrive.File, lFolder *local.File) error {
var gFiles []*gdrive.File
var err error
for {
gFiles, err = gFolder.GetFiles()
if err != nil {
err = askRetry(err)
if err != nil {
return err
}
} else {
break
}
}
lFiles, err := lFolder.GetFiles()
if err != nil {
return err
}
gMap := makeGDriveNameMap(gFiles)
lMap := makeLocalNameMap(lFiles)
for _, lFile := range lFiles {
gFile, ok := gMap[lFile.Name()]
if ok {
matched, err := diffFile(gFile, lFile)
if err != nil {
return err
}
if !matched {
fmt.Printf("+-:%s:%s\n", gFile.Path, lFile.Path)
}
if lFile.IsDir() {
err = traverse(gFile, lFile)
if err != nil {
return err
}
}
} else {
fmt.Printf("+ :%s:%s\n", gFolder.Join(lFile.Name()), lFile.Path)
}
}
for _, gFile := range gFiles {
_, ok := lMap[gFile.Name]
if !ok {
fmt.Printf(" -:%s:%s\n", gFile.Path, lFolder.Join(gFile.Name))
}
}
return nil
}
func diffFile(gFile *gdrive.File, lFile *local.File) (bool, error) {
if gFile.IsFolder() != lFile.IsDir() {
return false, nil
}
if lFile.IsDir() {
return true, nil
}
md5Checksum, err := lFile.Md5Checksum()
if err != nil {
return false, err
}
return md5Checksum == gFile.Md5Checksum, nil
}