package osversion import ( "fmt" "sync" "golang.org/x/sys/windows" ) // OSVersion is a wrapper for Windows version information // https://msdn.microsoft.com/en-us/library/windows/desktop/ms724439(v=vs.85).aspx type OSVersion struct { Version uint32 MajorVersion uint8 MinorVersion uint8 Build uint16 } var ( osv OSVersion once sync.Once ) // Get gets the operating system version on Windows. // The calling application must be manifested to get the correct version information. func Get() OSVersion { once.Do(func() { var err error osv = OSVersion{} osv.Version, err = windows.GetVersion() if err != nil { // GetVersion never fails. panic(err) } osv.MajorVersion = uint8(osv.Version & 0xFF) osv.MinorVersion = uint8(osv.Version >> 8 & 0xFF) osv.Build = uint16(osv.Version >> 16) }) return osv } // Build gets the build-number on Windows // The calling application must be manifested to get the correct version information. func Build() uint16 { return Get().Build } // String returns the OSVersion formatted as a string. It implements the // [fmt.Stringer] interface. func (osv OSVersion) String() string { return fmt.Sprintf("%d.%d.%d", osv.MajorVersion, osv.MinorVersion, osv.Build) } // ToString returns the OSVersion formatted as a string. // // Deprecated: use [OSVersion.String]. func (osv OSVersion) ToString() string { return osv.String() }