I'm trying to write some convenience wrapper funcs that base64
encodes and decodes byte slices. (Can't understand why this is not conveniently provided in the stdlib.)
However this code (in playground):
func b64encode(b []byte) []byte {
encodedData := &bytes.Buffer{}
encoder := base64.NewEncoder(base64.URLEncoding, encodedData)
defer encoder.Close()
encoder.Write(b)
return encodedData.Bytes()
}
func b64decode(b []byte) ([]byte, error) {
dec := base64.NewDecoder(base64.URLEncoding, bytes.NewReader(b))
buf := &bytes.Buffer{}
_, err := io.Copy(buf, dec)
if err != nil {
return nil, err
}
return buf.Bytes(), nil
}
func main() {
b := []byte("hello")
e := b64encode(b)
d, err := b64decode(e)
if err != nil {
log.Fatalf("could not decode: %s", err)
}
fmt.Println(string(d))
}
generates truncated output when I try to print it:
hel
What's going on?