Re: Ctx & XML

[Hans Hagen <pragma@wxs.nl>]

On 12/10/2014 11:08 PM, Lukáš Procházka wrote:
> Hello,
>
> I'm having problem using LuaXml library with Ctx, both using Lua ver. 5.2.
>
> LuaXml works fine with Lua standalone programs/scripts;
> but something weird occurs when used from within Ctx (e.g. a .xml file
> can be read successfully from standalone Lua with LuaXml lib; but the
> same code doesn't give the desired result when used in combination with
> Ctx; a problem might be version mismatch - I'm still using both Lua 5.1
> and 5.2 including 3rd party modules in my scripts - but my latest tests
> with Ctx & LuaXml should have avoid this; or namespace mismatch...?).

I don't know (and as we have quite some code on-board I don't care too 
much either about clashes in namespaces).

> Anyway, does native Ctx XML API (has it its own namespace, like
> 'context.xml'?) provide a function to load a .xml file and to return its
> XML tree as a table, with nodes (as a table with node attributes as
> table members) in a proper sequence... something like LuaXml's
> 'xml.load("file.xml")' does?

I assume that you also want the content of elements, not just the 
attributes.

> Or how to achieve this in a best way under Ctx: XML file -> Lua table/tree?

It all depends on what kin dof table you want (if the content is an 
indexed table and attributes keys then you have the problem that the 
element cannot be a key too as it can clash) .. anyway, it's no big deal 
to provide a stupid table, so I can provide something because after all 
the loaded xml file is a table already.

local x = xml.load("file.xml")

local t = xml.totable(x)

where x is an index/hash mix plus _tag, _type and _namespace fields as 
well (after all I assume that you need to know that too).

(btw, I bet that you can do what you want with the existing 
functionality as well, so there is not much benefit in such a table)

Probably in the next upload,

Hans



-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________