diff --git a/libbsm.go b/libbsm.go
index 9067dda..838db5b 100644
--- a/libbsm.go
+++ b/libbsm.go
@@ -156,7 +156,7 @@ type Record interface {
 	GetType() uint8
 	//	Length()
 	LoadFromBinary(rdr *bufio.Reader) error
-	Print(*os.File, string, int)
+	Print(*bufio.Writer, string, int)
 }
 
 type Header32 struct {
@@ -605,7 +605,7 @@ func (h *Header32) LoadFromBinary(rdr *bufio.Reader) error {
 static void
 print_header32_tok(FILE *fp, tokenstr_t *tok, char *del, int oflags)
 */
-func (h *Header32) Print(file *os.File, delimiter string, flags int) {
+func (h *Header32) Print(file *bufio.Writer, delimiter string, flags int) {
 	var timeval string
 	if PRT_TIMESYSLOG23 == flags&PRT_TIMESYSLOG23 {
 		timeval = time.Unix((int64)(h.S), 0).Add(time.Millisecond * (time.Duration)(h.Msec)).Format("2006-01-02T15:04:05.000Z07:00")
@@ -704,7 +704,7 @@ func (e *ExecArg) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (e *ExecArg) Print(file *os.File, delimiter string, flags int) {
+func (e *ExecArg) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		// We don't need no count, bc we reconstiture command line
 		printable := struct {
@@ -770,7 +770,7 @@ func (p *Path) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (p *Path) Print(file *os.File, delimiter string, flags int) {
+func (p *Path) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		// We don't need no length
 		printable := struct {
@@ -847,7 +847,7 @@ func (a *Attribute32) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (a *Attribute32) Print(file *os.File, delimiter string, flags int) {
+func (a *Attribute32) Print(file *bufio.Writer, delimiter string, flags int) {
 	var user string
 	var group string
 
@@ -952,7 +952,7 @@ func (a *Attribute64) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (a *Attribute64) Print(file *os.File, delimiter string, flags int) {
+func (a *Attribute64) Print(file *bufio.Writer, delimiter string, flags int) {
 	var user string
 	var group string
 	// TODO : resolve Uid and Gid (also support domain accounts)
@@ -1082,7 +1082,7 @@ func (s *Subject32) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (s *Subject32) Print(file *os.File, delimiter string, flags int) {
+func (s *Subject32) Print(file *bufio.Writer, delimiter string, flags int) {
 	var auser string
 	var euser string
 	var egroup string
@@ -1225,7 +1225,7 @@ func (p *Process32) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (p *Process32) Print(file *os.File, delimiter string, flags int) {
+func (p *Process32) Print(file *bufio.Writer, delimiter string, flags int) {
 	var auser string
 	var euser string
 	var egroup string
@@ -1386,7 +1386,7 @@ func (s *Subject32Ex) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (s *Subject32Ex) Print(file *os.File, delimiter string, flags int) {
+func (s *Subject32Ex) Print(file *bufio.Writer, delimiter string, flags int) {
 	var auser string
 	var euser string
 	var egroup string
@@ -1558,7 +1558,7 @@ func (p *Process32Ex) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (p *Process32Ex) Print(file *os.File, delimiter string, flags int) {
+func (p *Process32Ex) Print(file *bufio.Writer, delimiter string, flags int) {
 	var auser string
 	var euser string
 	var egroup string
@@ -1714,7 +1714,7 @@ func (s *Subject64) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (s *Subject64) Print(file *os.File, delimiter string, flags int) {
+func (s *Subject64) Print(file *bufio.Writer, delimiter string, flags int) {
 	var auser string
 	var euser string
 	var egroup string
@@ -1857,7 +1857,7 @@ func (p *Process64) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (p *Process64) Print(file *os.File, delimiter string, flags int) {
+func (p *Process64) Print(file *bufio.Writer, delimiter string, flags int) {
 	var auser string
 	var euser string
 	var egroup string
@@ -2017,7 +2017,7 @@ func (s *Subject64Ex) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (s *Subject64Ex) Print(file *os.File, delimiter string, flags int) {
+func (s *Subject64Ex) Print(file *bufio.Writer, delimiter string, flags int) {
 	var auser string
 	var euser string
 	var egroup string
@@ -2189,7 +2189,7 @@ func (p *Process64Ex) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (p *Process64Ex) Print(file *os.File, delimiter string, flags int) {
+func (p *Process64Ex) Print(file *bufio.Writer, delimiter string, flags int) {
 	var auser string
 	var euser string
 	var egroup string
@@ -2308,7 +2308,7 @@ func (r *Return32) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (r *Return32) Print(file *os.File, delimiter string, flags int) {
+func (r *Return32) Print(file *bufio.Writer, delimiter string, flags int) {
 	var errMsg string
 	errNo, err := lookupErrno(r.Status)
 	if err == nil {
@@ -2369,7 +2369,7 @@ func (r *Return64) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (r *Return64) Print(file *os.File, delimiter string, flags int) {
+func (r *Return64) Print(file *bufio.Writer, delimiter string, flags int) {
 	var errMsg string
 	errNo, err := lookupErrno(r.Status)
 	if err == nil {
@@ -2430,7 +2430,7 @@ func (t *Trailer) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (t *Trailer) Print(file *os.File, delimiter string, flags int) {
+func (t *Trailer) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		printable := struct {
 			Count uint32 `json:"length"` // Effective user ID
@@ -2493,7 +2493,7 @@ func (a *Arg32) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (a *Arg32) Print(file *os.File, delimiter string, flags int) {
+func (a *Arg32) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		printable := struct {
 			Count uint32 `json:"count"` // Effective user ID
@@ -2563,7 +2563,7 @@ func (a *Arg64) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (a *Arg64) Print(file *os.File, delimiter string, flags int) {
+func (a *Arg64) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		printable := struct {
 			Count uint32 `json:"count"` // Effective user ID
@@ -2667,7 +2667,7 @@ func (s *SocketEx) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (s *SocketEx) Print(file *os.File, delimiter string, flags int) {
+func (s *SocketEx) Print(file *bufio.Writer, delimiter string, flags int) {
 	var lip string
 	var rip string
 	if s.AddrType == ISIPV4 {
@@ -2732,7 +2732,7 @@ func (s *SockInet32) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (s *SockInet32) Print(file *os.File, delimiter string, flags int) {
+func (s *SockInet32) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		printable := struct {
 			Family uint16 `json:"family"`
@@ -2794,7 +2794,7 @@ func (s *SockInet128) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (s *SockInet128) Print(file *os.File, delimiter string, flags int) {
+func (s *SockInet128) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		printable := struct {
 			Family uint16 `json:"family"`
@@ -2852,7 +2852,7 @@ func (s *SockUnix) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (s *SockUnix) Print(file *os.File, delimiter string, flags int) {
+func (s *SockUnix) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		printable := struct {
 			Family uint16 `json:"family"`
@@ -2905,7 +2905,7 @@ func (e *Exit) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (e *Exit) Print(file *os.File, delimiter string, flags int) {
+func (e *Exit) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		j, err := json.Marshal(e)
 		if err != nil {
@@ -2953,7 +2953,7 @@ func (t *Text) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (t *Text) Print(file *os.File, delimiter string, flags int) {
+func (t *Text) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		j, err := json.Marshal(t)
 		if err != nil {
@@ -3001,7 +3001,7 @@ func (z *ZoneName) LoadFromBinary(rdr *bufio.Reader) error {
 	return nil
 }
 
-func (z *ZoneName) Print(file *os.File, delimiter string, flags int) {
+func (z *ZoneName) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		printable := struct {
 			Name   string `json:"name"`
@@ -3103,7 +3103,7 @@ func (c *Capabilities) MarshalJSON() ([]byte, error) {
 	return json.Marshal(cJSON)
 }
 
-func (r *Rights) Print(file *os.File, delimiter string, flags int) {
+func (r *Rights) Print(file *bufio.Writer, delimiter string, flags int) {
 	if flags&PRT_JSON == PRT_JSON {
 		// Do not print Rights.Length, only capabilities array
 		j, err := json.Marshal(r.Rights)