Fwd: Re: [xml] xml help

[Michael Picheca <pichecma mcmaster ca>]

Is there any way of checking that the dtd that is referenced in the xml file
exists and if so, can we check that the dtd is valid.

Thanks

Mike
--
Michael Picheca, pichecma mcmaster ca on 12/13/2001


--- Original Message ---
From: "Daniel Veillard" <veillard redhat com>
To: Michael Picheca <pichecma mcmaster ca>
Cc: <xml gnome org>
Sent: Mon, 10 Dec 2001 11:35:12 -0500
Subject: Re: [xml] xml help

>On Mon, Dec 10, 2001 at 11:26:34AM -0800, Michael Picheca wrote:
>> I tried using the xmlDoValidityCheckingDefaultValue =1 that you
>>suggested and
>> I
>> need to be able to halt the program after the validation with the
>>dtd listed
>> within the xml file fails. How do I do that? Is there a return
>>value or
>> something that I can use to invoke a halt? WHen I was using
>>xmlValidateDtd it
>> would return 0 if it failed and I would halt the program at this
>>point.
>>
>
> The problem is taht interfaces like xmlParseFile don't allow you
>to do this !
> You need to use more advanced interfaces like the ones used in
>xmllint.c
>where you create your own parser context:
> Look at xmllint.c code, somethings like the following should work:
>
>  xmlParserCtxtPtr ctxt;
>
>  xmlDoValidityCheckingDefaultValue =1;
>  ctxt = xmlCreateFileParserCtxt(filename);
>
>  xmlParseDocument(ctxt);
>  ret = ctxt->wellFormed;
>  valid = ctxt->valid;
>  doc = ctxt->myDoc;
>  xmlFreeParserCtxt(ctxt);
>  if (!ret) {
>    xmlFreeDoc(doc);
>    doc = NULL;
>  }
>
>Daniel
>