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On 21/08/16 02:50 PM, Marc Balmer wrote:

Am 22.08.2016 um 05:38 schrieb Martin <eden_martin_fuhrspam@gmx.de>:



On 16-08-21 07:45 AM, Marc Balmer wrote:

I am working on code to easily create XML trees from Lua tables.  What would,
in your opinion, be a comfortable Lua table notation of XML trees, expressed
as Lua tables?


For me for structure like

<data>
  <el attr1="value1", attr2="value2">
    el_data
  </el>
  <el attr1="value1", attr2="value2">
    el_data
  </el>
</data>

expressions "xml.data.el[1].value" or
"xml.data.el[#xml.data.el].attrs['attr2']" looks convenient.


I don't want to access XML from Lua, I want to represent data as Lua tables,
which can then be converted to XML.  I want to _PRODUCE_ xml, not parse
it.



Treat tables as lists.
You may want the first element to be a tag name. Alternatively you may want the element [0] to be a tag name. 

For attributes, treat them as string keys.
Namespaces are a pain. I'm not sure how to handle them personally. Last time I played with "XML" I couldn't figure out how to handle attribute namespaces, but for tag namespaces you can just use [0] = {tag=tagname, ns=tagns}. (Or alternatively, use plain old [0] = "ns:tag". The thing with my XML-like thingy is that it allows anything in names and namespaces so I can't use a string representation. But you can!) 

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