Re: [xml] Uuugly warnings - repost

[Daniel Veillard <veillard redhat com>]

On Mon, Aug 26, 2002 at 10:52:52AM -0700, Gianni Mariani wrote:
> I'm sorry if I persist but I have no good answer to this question.  I've 
> looked through the code, I've read the docs, I have no idea why this 
> does not work or the correct way to make this work.
>
> An RTFM pointer would be fine.
>
> My objective is to remove all output from the xml library.  In this 
> case, the non-existance of the file being parsed is not considered an 
> error yet the `warning: failed to load external entity 
> "system_config.xml"' warning persists.  It seems as though the 
> xmlParseFile API is inadequate for this.  What would be more appropriate ?
>
> TIA.
>
> - original post....
>
> So, I get the following output when I try to open a file using 
> xmlParseFile.
>
> warning: failed to load external entity "system_config.xml"
>
> This is the code chunk
>
>  warningSAXFunc        l_warning = xmlDefaultSAXHandler.warning;
>  errorSAXFunc          l_error = xmlDefaultSAXHandler.error;
>
>  xmlDefaultSAXHandler.error = 0;
>  xmlDefaultSAXHandler.warning = 0;
>
>  doc = xmlParseFile(_filename.c_str());
>
>  xmlDefaultSAXHandler.error = l_error;
>  xmlDefaultSAXHandler.warning = l_warning;
>
> So what's the Right(TM) way to send all warnings/errors to the bit bucket ?

  Okay, my guess is the following:
   - the library ain't initialized when you overwrite the default handlers
     (purist viewpoint you should use NULL, not 0)
   - then you call xmlParseFile()
   - the library notes it's not initialized, then call xmlInitParser();
   - and the default xmlDefaultSAXHandler.error and warning get overwritten

try to call xmlInitParser() before resetting the xmlDefaultSAXHandler fields.

  Another way is to reset the default error callback to your own
routine with xmlSetGenericErrorFunc() and make that routine do nothing 
(usually trivial ;-)

Daniel

-- 
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