[lxml-dev] Validation against an external DTD

[Stefan Behnel]

Hi,

Lee Brown wrote:
> I do not know if lxml can load a DTD from an external file.  And the docinfo
> attributes on the etree instance are read-only, so there's no help there.

lxml does not currently have support for adding/updating DTD subsets, though
we already had a couple of requests to make this work - patches are very welcome.


> As a workaround, though, you might be able to prepend a DOCTYPE string to the
> beginning of the file before you parse it.

No guarantee, but that should generally work.

Stefan


> -----Original Message-----
> From: lxml-dev-bounces at codespeak.net [mailto:lxml-dev-bounces at codespeak.net] On
> Behalf Of Michael Guntsche
> Sent: Tuesday, February 06, 2007 4:21 PM
> To: lxml-dev at codespeak.net
> Subject: Re: [lxml-dev] Validation against an external DTD
> 
> On Feb 6, 2007, at 9:52 PM, Lee Brown wrote:
> 
> 
>> class XMLParser(_BaseParser)
>>  |  The XML parser.  Parsers can be supplied as additional argument to  
>> |  various parse functions of the lxml API.  A default parser is 
>> always  |  available and can be replaced by a call to the global 
>> function  |  'set_default_parser'.  New parsers can be created at any 
>> time without a  |  major run-time overhead.
> 
> I had a look at this as well, but I do not understand, how I specify the DTD
> that should be used for validation. I unterstand that the Parser validates
> against a DTD if it is specified in the XML file and found by the parser during
> execution. But in my case I need something like this
> 
> PyXML example:
> 
> dtd = xmldtd.load_dtd("my dtd file")
> parser = xmlproc.XMLProcessor()
> parser.set_application(xmlval.ValidationApp(dtd, parser)) ....
> parser.parse_file("my xml file that needs to be validated")
> 
> 
> Kind regards,
> Michael
> 
> 
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