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|
//go:build windows
// +build windows
package tools
import (
"golang.org/x/sys/windows"
)
func openSymlink(path string) (windows.Handle, error) {
p, err := windows.UTF16PtrFromString(path)
if err != nil {
return 0, err
}
attrs := uint32(windows.FILE_FLAG_BACKUP_SEMANTICS)
h, err := windows.CreateFile(p, 0, 0, nil, windows.OPEN_EXISTING, attrs, 0)
if err != nil {
return 0, err
}
return h, nil
}
func CanonicalizeSystemPath(path string) (string, error) {
h, err := openSymlink(path)
if err != nil {
return "", err
}
defer windows.CloseHandle(h)
buf := make([]uint16, 100)
for {
n, err := windows.GetFinalPathNameByHandle(h, &buf[0], uint32(len(buf)), 0)
if err != nil {
return "", err
}
if n < uint32(len(buf)) {
break
}
buf = make([]uint16, n)
}
s := windows.UTF16ToString(buf)
if len(s) > 4 && s[:4] == `\\?\` {
s = s[4:]
if len(s) > 3 && s[:3] == `UNC` {
// return path like \\server\share\...
return `\` + s[3:], nil
}
return s, nil
}
return s, nil
}
|
