// copyFile copies the contents of the file named src to the file named
// by dst. The file will be created if it does not already exist. If the
// destination file exists, all it's contents will be replaced by the contents
// of the source file. The file mode will be copied from the source and
// the copied data is synced/flushed to stable storage.
copyFile copies the contents of the file named src to the file named
by dst. The file will be created if it does not already exist. If the
destination file exists, all it's contents will be replaced by the contents
of the source file. The file mode will be copied from the source and
the copied data is synced/flushed to stable storage.
// copyFile copies the contents of the file named src to the file named // by dst . The file will be created if it does not already exist . If the // destination file exists all it ' s contents will be replaced by the contents // of the source file . The file mode will be copied from the source and // the copied data is synced / flushed to stable storage .
func copyFile(dst, src string) (err error) {
	in, err := os.Open(src)
	if err != nil {
		return
	}
	defer in.Close()
	out, err := os.Create(dst)
	if err != nil {
		return
	}
	defer func() {
		if e := out.Close(); e != nil {
			err = e
		}
	}()
	_, err = io.Copy(out, in)
	if err != nil {
		return
	}
	err = out.Sync()
	if err != nil {
		return
	}
	si, err := os.Stat(src)
	if err != nil {
		return
	}
	err = os.Chmod(dst, si.Mode())
	if err != nil {
		return
	}
	return
}
func copyFile ( dst , src string ) ( err error ) { in , err := os . Open ( src ) if err != nil { return } defer in . Close ( ) out , err := os . Create ( dst ) if err != nil { return } defer func ( ) { if e := out . Close ( ) ; e != nil { err = e } } ( ) _ , err = io . Copy ( out , in ) if err != nil { return } err = out . Sync ( ) if err != nil { return } si , err := os . Stat ( src ) if err != nil { return } err = os . Chmod ( dst , si . Mode ( ) ) if err != nil { return } return }
copyFile copies the contents of the file named src to the file named
by dst.
copyFile copies the contents of the file named src to the file named by dst .