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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
}
func (osv OSVersion) ToString() string {
return fmt.Sprintf("%d.%d.%d", osv.MajorVersion, osv.MinorVersion, osv.Build)
}
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