Wireshark · Wireshark-dev: Re: [Wireshark-dev] How to retrieve/modify a tree string

[Ulf Lamping <ulf.lamping@xxxxxx>]

Guy Harris wrote:
> Unfortunately, there's currently no way to do that - and there's no 
> proto_tree_add_item_format() for that; you could use the other 
> proto_tree_add_XXX_format() routines.
>
> This sort of thing is - "arrays" or sequences of entries of the same 
> type - is, I suspect, common enough that we might want to have a 
> mechanism to add an item and have a "subscript" added to it.
>   
Sound like a good idea.
> That might be a variant of the proto_tree_add_XXX routines that takes a 
> subscript value, and adds the subscript value after the field name - for 
> example, proto_tree_add_XXX_array_element() or 
> proto_tree_add_XXX_sequence_element().
>   
I've implemented something similar (a subroutine in the DCOM/CBA 
dissector) and I've named it "xxx_indexed",
but array_element would be ok too IMHO (the term sequence might be 
leading to a wrong direction).
> If we did that, would we want the format of the subscript to be wired in 
> (e.g., "Field[n]" or "Field n"), would we want it to be a property of 
> the field (in the hf[] entry), or would we want it to be an additional 
> argument to the proto_tree_add_XXX_... routine?
>   
Without thinking too much about it, I would guess that there are a lot 
of variants (leading zeroes, hex or dec, ...), so we might need a format 
string - but I'm not sure about that.

Regards, ULFL