Re: [Tclxml-users] newbie basic question using parser to extract Tag names and characterdata together...

[Steve B. <Ste...@ex...>]

Hi Anthony,

TclXML gives you a streaming interface, which means that your  
application must keep track of the state of the parser as it goes  
through the document structure.  So you have to use *both* the tags  
and data to make it all work together.

If you're worried about making that work, then consider using TclDOM  
instead.  With a DOM tree the context has already been built for you.

If you're feeling more adventurous, you could develop a solution that  
uses a combination of XSLT and Tcl, based on TclXSLT.  A lot of code  
that I write these days uses an XSL stylesheet to process the XML  
document, and the result of the stylesheet is a Tcl script that the  
Tcl application eval's.

Hope that helps,
Steve Ball

On 01/02/2007, at 10:33 AM, Anthony G wrote:

> Hello TCLXML experts :)
>
> I have been searching for a few days online for tutorials on how to  
> use TCLXML and I have a very basic task.  I want to be able to take  
> an xml file say like this
>
> <MY_STRUCTURE>
>  <TAG2> tag2 data </TAG2>
>  <TAG3> tag3 data </TAG3>
>  <TAG4>
>    <TAG5> tag5 data </TAG5>
>    <TAG6> tag6 data </TAG6>
>  </TAG4>
> </MY_STRUCTURE>
>
> and export the data above into a data structure, say a list or  
> maybe even a hastable (TCL ARRAY)
>
> for example I would want to create an array
>
> MYSTRUCTURE
>
> with the index's based on the TAGS that fall under it example
>
> set MYSTRUCTURE(TAG2) "tag2 data"
> set MYSTRUCTURE(TAG3) "tag3 data"
> set MYSTRUCTURE(TAG4,TAG5) "tag5 data"
> set MYSTRUCTURE(TAG4,TAG6) "tag6 data"
>
> or something like this... where the index indicates level...
>
> what I have seen so far is that I can use the xml::parser to pull  
> out tags and data, but none at the same time...
>
> set parser [::xml::parser -characterdatacommand cdata] <--- will  
> pull out data between tags
> set parser2 [::xml::parser -elementendcommand cdata2] <--- will  
> give me names of tags after END is hit...
>
> is there a way to combine the functionality of these so that I can  
> see what data falls under which tags?
>
> Thank you for your help and have a great day
>
>  -Anthony
>
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