-
Notifications
You must be signed in to change notification settings - Fork 9
/
scanner.go
39 lines (34 loc) · 953 Bytes
/
scanner.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
package rtcm3
import (
"bufio"
"io"
)
// Scanner is used for parsing RTCM3 Messages from a Reader
type Scanner struct {
Reader *bufio.Reader
}
func NewScanner(r io.Reader) Scanner {
return Scanner{bufio.NewReader(r)}
}
// NextMessage reads from Scanner until a Message is found
func (scanner Scanner) NextMessage() (message Message, err error) {
frame, err := scanner.NextFrame()
if err != nil {
return nil, err
}
return DeserializeMessage(frame.Payload), err // DeserializeMessage should return err
}
// NextFrame reads from Scanner until a valid Frame is found
func (scanner Scanner) NextFrame() (frame Frame, err error) {
for {
frame, err := DeserializeFrame(scanner.Reader)
if err != nil {
if err.Error() == "invalid preamble" || err.Error() == "invalid CRC" {
// Continue reading from next byte if a valid Frame was not found
// TODO: return byte array of skipped bytes
continue
}
}
return frame, err
}
}