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package ber
import (
"bytes"
"strconv"
"strings"
)
type OID []int
func MarshalOID(obj OID) []byte {
if len(obj) < 2 || obj[0] > 2 {
return nil
}
if obj[0] < 2 && obj[1] > 39 {
return nil
}
buf := bytes.NewBuffer(base128(obj[0]*40 + obj[1]))
for _, o := range obj[2:] {
buf.Write(base128(o))
}
return buf.Bytes()
}
func (o OID) Marshal() ([]byte, error) {
return MarshalOID(o), nil
}
func UnmarshalOID(b []byte) (o OID) {
if len(b) < 1 {
return
}
v, n := debase128(b)
if v < 80 {
o = OID{v / 40, v % 40}
} else {
o = OID{2, v - 80}
}
for i := n; i < len(b); i += n {
v, n = debase128(b[i:])
o = append(o, v)
}
return
}
func (o OID) String() string {
s := make([]string, len(o))
for i, v := range o {
s[i] = strconv.Itoa(v)
}
return strings.Join(s, ".")
}
func (o OID) Equal(a OID) bool {
if len(o) != len(a) {
return false
}
for i := 0; i < len(o); i++ {
if o[i] != a[i] {
return false
}
}
return true
}
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