custom serialization/deserialization using JSON .net

Question

My application receives SMS in following format:

STA:000000,000;L:310;TM:090516195102;D:1;T:01;C:25;A00:0.166;A01:00000;A02:0.578;A03:00 000;A04:00000;A05:00000;A06:00000;A07:00000;A08:00000;A09:00000;A10:00000;A11:00000;A1 2:00000;A13:31.00;A14:30.93;P01:00000000;P02:00000000;P03:00000000;P04:00000000;P05:000 00000;P06:00000000;K01:13333330000000000;O01:0000;8F

I want to deserialize this string to an object. I already have read about JSON tool, but I don't know if I serialize and deserialize in this format. That is, can I change the default delimiter(,) and class({}) and array notations([])?

That isn't json - why do you want to use a json serializer? It would be better to simply tell us what the rules are for that format, so we can offer guidance. But my guidance: forget json - that isn't json. — Marc Gravell
– Marc Gravell, Commented Feb 13, 2011 at 9:07
The format looks just like delimited key-value pairs, but it is hard to see what you want that to look like as an object... Do you have an example interpretation? i.e. What does that data represent? — Marc Gravell
– Marc Gravell, Commented Feb 13, 2011 at 9:10
tanks for your comments. these pair-value are output of a gprs data logger that sent via sms. considering the structure of string is not consistent (i.e some pair/values are omitted some times), what is the best way to read such a string to object (deserialize)? tanks — r.zarei
– r.zarei, Commented Feb 13, 2011 at 19:14

CodesInChaos · Accepted Answer · 2011-02-13 13:38:12Z

1

This looks like a ; separated list of key-value pairs to me, where key and value are separated by :. The following code parses is as such. I don't see what this has to do with JSON.

const string testInput="STA:000000,000;L:310;TM:090516195102;D:1;T:01;C:25;A00:0.166;A01:00000;A02:0.578;A03:00"+
        "000;A04:00000;A05:00000;A06:00000;A07:00000;A08:00000;A09:00000;A10:00000;A11:00000;A1"+
        "2:00000;A13:31.00;A14:30.93;P01:00000000;P02:00000000;P03:00000000;P04:00000000;P05:000"+
        "00000;P06:00000000;K01:13333330000000000;O01:0000";

IEnumerable<KeyValuePair<string,string>> ParseList(string input)
{
    string[] lines=input.Split(';');
    foreach(string line in lines)
    {
        string[] parts=line.Split(':');
        if(parts.Length!=2)
            throw new InvalidDataException(line);
        yield return new KeyValuePair<string,string>(parts[0],parts[1]);
    }
}

void Main()
{
     ParseList(testInput).Dump();       
}

It doesn't handle the last ;8F but I assume that's only an artifact of a truncated message.

answered Feb 13, 2011 at 13:38

CodesInChaos

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1 Comment

r.zarei Over a year ago

tanks for your reply, assume that i have a class with STA, L, TM , D ,... properties. and i know some times in above string some of pair values are omitted, know what is the best practice to read such a string to class?

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