Re: [xml] XPath with default namespace

[Wai-Sun Chia <waisun chia compaq com>]

Daniel Veillard wrote:

>    xmlXPathRegisterNs(xpathCtxt, "svg", "http://www.w3.org/Graphics/SVG";);
>
> and query for //svg:desc (check the real URI for SVG Namespace, I invented it).
> The good point is that this will work whether the given namespace is
> the default one, or mapped to any other prefix. The XPath engine will do
> the matching on the URI resolved using the prefix declared in the XPath
> context and will ignore the actual prefix used in the instance.


But how do I dynamically get the URI out from the doc, so that I can put it in

xmlXPathRegisterNs()?


Hardcoding of the namespace "svg" and the URI 
"http://www.w3.org/Graphics/SVG"; is not a very good idea for generic 
components...





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Wai-Sun "Squidster" Chia
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