Re: [xml] Differences in DOM parsing on Windows and UNIX?

["Ed Day" <eday obj-sys com>]

Hi Stephane,

As far as I know, I only have a main thread in my program.  It is not
multi-threaded.  But "xmlKeepBlanksDefault(0)" did not turn off blanks in
the main thread.

Regards,

Ed Day

----- Original Message -----
From: "Stéphane Bidoul" <stephane bidoul softwareag com>
To: "'Ed Day'" <eday obj-sys com>
Cc: <xml gnome org>
Sent: Monday, October 06, 2003 5:48 PM
Subject: RE: [xml] Differences in DOM parsing on Windows and UNIX?


> > In investigating this further, I found we built the Windows
> > version without
> > thread support and the UNIX version with thread support.  I
> > also found we
> > were intentionally trying to turn blank text nodes off by
> > making a call to
> > "xmlKeepBlanksDefault(0)" to make the DOM tree easier to work with.
> > Apparently this does not work in multi-threaded mode.  There
> > appears to be
> > another call - "xmlThrDefKeepBlanksDefault" - that must be
> > used in this
> > case.  But, this seems to be compiled out if threads are not
> > enabled.  We
> > therefore ended up with the following initialization logic in
> > our main code:
> >
> > #ifdef LIBXML_THREAD_ENABLED
> >          xmlThrDefKeepBlanksDefaultValue(0);
> > #else
> >          xmlKeepBlanksDefault(0);
> > #endif
> >
> > Kind of messy.  It would seem this could be kept under the
> > covers somewhere
> > (or perhaps it is and we missed it).
>
> Globals are per threads when libxml2 is compiled --with-threads.
> xmlThrDefKeepBlanksDefaultValue sets the value for new threads
> that will be created later. xmlKeepBlanksDefault sets the value
> for the current thread only. Assuming you are doing that at
> program initialization, you should do
>
> #ifdef LIBXML_THREAD_ENABLED
>          xmlKeepBlanksDefault(0); /* for the "main" thread */
>          xmlThrDefKeepBlanksDefaultValue(0); /* for other threads yet to
be
> created */
> #else
>          xmlKeepBlanksDefault(0);
> #endif
>
> You can also avoid global defaults in most cases.
> I think you can set keepBlanks on the parser context.
>
> -sbi
>
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