RE: [xml] In-memory catalog

["Daniel Gehriger" <gehriger linkcad com>]

Never mind... It works like a charm if the memory buffer contains a
valid DTD...

My second questions stays, though: I would like to pass some information
to the entity loader using the xmlParserCtxtPtr. Since I load the XML
file using xmlParseFile(), I can't see a way to pass some context
information.

Merci mille fois pour ton travail excellent !

Daniel


> -----Original Message-----
> From: xml-admin gnome org [mailto:xml-admin gnome org] On 
> Behalf Of Daniel Gehriger
> Sent: Saturday, 06 April, 2002 23:49
> To: veillard redhat com
> Cc: xml gnome org
> Subject: RE: [xml] In-memory catalog
>
>
> Daniel,
>
> Thanks for the information. I tried your approach, and use
> xmlParserInputBufferCreateMem() (see below) in my custom 
> entity loader. But xmlParseFile() always returns NULL if I do 
> that. Can't I use
> xmlParserInputBufferCreateMem() for this ?
> Also, is there a way to pass some information in the 
> xmlParserCtxtPtr to the entity loader (the doc says it's SAX only).
>
> - Daniel
>
> ...
> // redirect external entity loader
> defaultLoader = xmlGetExternalEntityLoader(); 
> xmlSetExternalEntityLoader(externalEntityLoader);
> ...
>
> xmlParserInputPtr externalEntityLoader(const char* url, 
>                                        const char* id, 
>                                        xmlParserCtxtPtr ctxt)
> {
>   if (url && stricmp(url, "http://myhost/DTD/1.0/mydtd.dtd";) == 0) {
>     xmlParserInputPtr input = xmlNewInputStream(ctxt);
>     input->filename = NULL;
>     input->directory = NULL;
>     input->buf = xmlParserInputBufferCreateMem(g_dtd, 
> g_dtdLen, XML_CHAR_ENCODING_ASCII);
>     input->base = input->buf->buffer->content;
>     input->cur = input->buf->buffer->content;
>     input->end = 
> &input->buf->buffer->content[input->buf->buffer->use];
>     return input;
>   }
>   else
>     return (*defaultLoader)(url, id, ctxt);
> }
>
>
>
> > -----Original Message-----
> > From: xml-admin gnome org [mailto:xml-admin gnome org] On
> > Behalf Of Daniel Veillard
> > Sent: Friday, 05 April, 2002 19:50
> > To: Daniel Gehriger
> > Cc: xml gnome org
> > Subject: Re: [xml] In-memory catalog
> >
> >
> > On Fri, Apr 05, 2002 at 07:21:01PM +0200, Daniel Gehriger wrote:
> > > Hello,
> > >
> > > I'm defining a XML doctype to be used only by one of my
> > applications.
> > > I would like to use the DOCTYPE as an external subset in the XML
> > > files:
> > >
> > > ...
> > > <!DOCTYPE FXML SYSTEM "http://myhost/DTD/1.0/mydtd.dtd";>
> > > ...
> > >
> > > While I can (and will) store the DTD at the specified URL, I would
> > > like my applications to use a local copy of it. That's what 
> > catalogs
> > > are for, right ? Ok, but I don't want to install a 
> catalog file, as
> > > this adds one more file that will break the application if it is 
> > > missing. Rather, I
> >
> >   Then simply override the default entity loader to make it point
> > to your in-memory resource:
> >     http://xmlsoft.org/xmlio.html#entities
> >
> > Daniel
> >
> > -- 
> > Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
> > veillard redhat com  | libxml GNOME XML XSLT toolkit
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