Re: [xml] Getting line number of schema validation errors

[Daniel Veillard <veillard redhat com>]

On Mon, May 17, 2004 at 10:56:31AM -0500, Eric Haszlakiewicz wrote:
> > Date: Sun, 16 May 2004 15:10:40 -0400
> > From: Daniel Veillard <veillard redhat com>
> > Subject: Re: [xml] Getting line number of schema validation errors
> > On Sun, May 16, 2004 at 10:58:30AM +0200, Israel Ganor wrote:
> > >     xmlSchemaSetValidErrors(validSchema,
> > >            (xmlSchemaValidityErrorFunc)   ErrorCallback,
> > >            (xmlSchemaValidityWarningFunc) WarningCallback,
> > >            NULL);
> > >     xmlSchemaValidateDoc(validSchema, pDoc);
> > >
> > > However, in ErrorCallback and WarningCallback I only get general
> info about
> > > the failure, but without the line number. 
> > > It it's very helpful to tell the user that there is an error in
> <USER>
> > > element, when his XML file contains 100 such elements.
> > >
> > > Is there a way to tell the exact error line number?
>
> >  Obviously not with that API. Use the xmlSetStructuredErrorFunc()
> > from xmlerror.h to register a global structure error handler, then
> > you should get the node where the error was generated.
> > Daniel
>
>   oh, of course.  _obviously_ not.  No one would ever think that a
> schema
> validation error callback would be handed the line number.

  Come on ! Obviously with respect to the signature of the functions
registered i.e. xmlSchemaValidityErrorFunc and xmlSchemaValidityWarningFunc
they provide only a string interface to the error funtion as you noticed !

> I submitted a bug to improve
>
> the docs for the xmlSchemaSetValidErrors() function so it references
> the 
> more useful xmlSetStructuredErrorFunc(). (#142760)
>
>   If there a function that will take the xmlError structure and format
> a pretty error message?  Does the message field in the xmlError 
> contain the file and line number, or is that just the basic error
> info?

  they contain the node raising the error, then you can print
the file, line number associated or whatever contextual information
associated to the node provided.

Daniel

-- 
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