DockerCLI/vendor/github.com/Microsoft/hcsshim/internal/longpath/longpath.go

25 lines
496 B
Go

package longpath
import (
"path/filepath"
"strings"
)
// LongAbs makes a path absolute and returns it in NT long path form.
func LongAbs(path string) (string, error) {
if strings.HasPrefix(path, `\\?\`) || strings.HasPrefix(path, `\\.\`) {
return path, nil
}
if !filepath.IsAbs(path) {
absPath, err := filepath.Abs(path)
if err != nil {
return "", err
}
path = absPath
}
if strings.HasPrefix(path, `\\`) {
return `\\?\UNC\` + path[2:], nil
}
return `\\?\` + path, nil
}