processing multiline / segmented messages

[metemaad]

I could not find an example for processing AIS 5 message here. This type of message has more than one line for example:

\g:1-2-3730,s:43576,c:1654340281,t:165434038119!AIVDM,2,1,7,,569EH`8000009aGUB20IF1UD4r1UF3OK7>22220N4PT38t0000000000,042

\g:2-2-37305A!AIVDM,2,2,7,,000000000000000,262

Is there any way to process such cases?

[nilsmagnus]

Same here, I am not able to parse AIS 5 messages of this kind

[nilsmagnus]

Since this issue is solved in the master branch, could you add a new tag?

[icholy]

cc @adrianmo

[kimgr]

Since this issue is solved in the master branch, could you add a new tag?

@nilsmagnus Could you point me to where this is solved? I haven't found any facilities in go-nmea for multiline reassembly, and I'm curious if I've just been looking in the wrong places. Thanks!

[aldas]

Try this

func TestName(t *testing.T) {
    var tagBlocks []TagBlock
    p := SentenceParser{
        OnTagBlock: func(tb TagBlock) error { // one way
            tagBlocks = append(tagBlocks, tb)
            return nil
        },
    }
    m, err := p.Parse("\\g:1-2-73874,n:157036,s:r003669945,c:1241544035*4A\\!AIVDM,1,1,,B,15N4cJ`005Jrek0H@9n`DW5608EP,0*13")
    if err != nil {
        t.Fatal(err)
    }
    bs, ok := m.(BaseSentence) // another way
    if ok {
        fmt.Printf("Tagblock: %+v\n", bs.TagBlock)
    }

    fmt.Printf("Tagblocks: %+v\n", tagBlocks)
}

This should output that single parsed tag block as

[{Time:1241544035 RelativeTime:0 Destination: Grouping:1-2-73874 LineCount:157036 Source:r003669945 Text:}]

assembly is up to you to implement.

[kimgr]

@aldas Thanks --

assembly is up to you to implement.

Ah, yeah, then I hadn't missed anything. I got the impression from above that there was reassembly support built in somewhere. Thanks for clarifying.