Json Deserialized example

TinyCLR OS
68

@mcalsyn Thank you for your quick response. With your guidance I was able to do exactly what I was looking to do. :smiley:

I do have a couple of follow-up questions.

  1. Looking at the Json Deserialize code it looks like the ‘JsonConverter.Deserialize()’ can return ‘JObject’ or an ‘JArray’ object. I could not figure out what in the Json string would make it return a ‘JArray’ as the top level object. Right now I’m assuming it will only return a ‘JObject’ in the root of the object. Is this a safe assumption?
  2. I notice that string values have quotes ("") around them. Can I remove these with JsonConvert somehow? If not, I can build a function to detect and parse them out.
  3. Any other feedback is welcome.

Output

object1:property2:1 = 3
object1:property2:5 = 7
object1:property1 = "value1"
object1:property2:0 = 2
object1:property2:4 = 6
object1:property2:3 = 5
object1:property2:2 = 4
key2 = "value2"
key1 = 1

Code

internal sealed class JsonConfigurationParser
{
    private readonly Hashtable _data = new Hashtable();

    public static Hashtable Parse(Stream input)
        => new JsonConfigurationParser().ParseStream(input);

    private Hashtable ParseStream(Stream input)
    {
        try
        {
            JToken token = JsonConverter.Deserialize(input);

            if (token is JObject jobj)
            {
                foreach (JProperty member in jobj.Members)
                {                        
                    foreach (DictionaryEntry pair in GetNode(member))
                    {
                        _data.Add(
                                pair.Key.ToString().ToLower(), 
                                pair.Value.ToString().Trim('"').TrimEnd('"')
                            );
                    }
                }
            }

            if (token is JArray jarray)
            {
                for (int i = 0; i < jarray.Length; i++)
                {
                    var property = new JProperty($"root{i}", jarray[i]);
                    
                    foreach (DictionaryEntry pair in GetNode(property))
                    {
                        _data.Add(
                                pair.Key.ToString().ToLower(),
                                pair.Value.ToString().Trim('"').TrimEnd('"')
                            );
                    }
                }
            }
        }
        catch
        {
            throw new FormatException();
        }

        return _data;
    }

    private static Hashtable GetNode(JProperty node)
    {
        var items = new Hashtable();

        if (node.Value is JObject jobj)
        {
            foreach (JProperty member in jobj.Members)
            {
                var key = string.Concat(node.Name, ":", member.Name);
                var values = GetNode(new JProperty(key, member.Value));

                foreach (DictionaryEntry pair in values)
                {
                    items.Add(pair.Key, pair.Value);
                }
            }

            return items;
        }

        if (node.Value is JArray jarray)
        {
            for (int i = 0; i < jarray.Length; i++)
            {
                var key = string.Concat(node.Name, ":", i);
                var values = GetNode(new JProperty(key, jarray[i]));

                foreach (DictionaryEntry pair in values)
                {
                    items.Add(pair.Key, pair.Value);
                }
            }

            return items;
        }

        items.Add(node.Name, node.Value);

        return items;
    }
}
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