49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
package system // import "github.com/docker/docker/pkg/system"
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import (
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"fmt"
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"path/filepath"
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"strings"
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"golang.org/x/sys/windows"
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)
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// GetLongPathName converts Windows short pathnames to full pathnames.
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// For example C:\Users\ADMIN~1 --> C:\Users\Administrator.
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// It is a no-op on non-Windows platforms
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func GetLongPathName(path string) (string, error) {
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// See https://groups.google.com/forum/#!topic/golang-dev/1tufzkruoTg
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p, err := windows.UTF16FromString(path)
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if err != nil {
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return "", err
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}
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b := p // GetLongPathName says we can reuse buffer
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n, err := windows.GetLongPathName(&p[0], &b[0], uint32(len(b)))
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if err != nil {
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return "", err
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}
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if n > uint32(len(b)) {
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b = make([]uint16, n)
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_, err = windows.GetLongPathName(&p[0], &b[0], uint32(len(b)))
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if err != nil {
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return "", err
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}
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}
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return windows.UTF16ToString(b), nil
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}
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// checkSystemDriveAndRemoveDriveLetter is the Windows implementation
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// of CheckSystemDriveAndRemoveDriveLetter
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func checkSystemDriveAndRemoveDriveLetter(path string) (string, error) {
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if len(path) == 2 && string(path[1]) == ":" {
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return "", fmt.Errorf("No relative path specified in %q", path)
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}
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if !filepath.IsAbs(path) || len(path) < 2 {
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return filepath.FromSlash(path), nil
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}
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if string(path[1]) == ":" && !strings.EqualFold(string(path[0]), "c") {
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return "", fmt.Errorf("The specified path is not on the system drive (C:)")
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}
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return filepath.FromSlash(path[2:]), nil
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}
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