On Tue, Jul 10, 2007 at 12:45:25PM +0100, Sebastian Rahtz wrote:
> I want to load an external file if it exists, otherwise load another
> file, and so on.
>
> So in my XSL I do this:
>
> <xsl:choose>
> <xsl:when test="boolean(document('sidebar.xml',/))">
> <xsl:message>found at .</xsl:message>
> </xsl:when>
> <xsl:when test="boolean(document('../sidebar.xml',/))">
> <xsl:message>found at ..</xsl:message>
> </xsl:when>
> <xsl:when test="boolean(document('../../sidebar.xml',/))">
> <xsl:message>found at ../..</xsl:message>
> </xsl:when>
> </xsl:choose>
>
> which works fine, but of course the side effect of the
> first <when> is a message:
>
> warning: failed to load external entity "sidebar.xml"
>
> which is not very nice. Is there any way of avoiding it?
you need to catch the error message, which should be quite easy
if you code at the C level and at the xsltproc level a --nowarning
option similar to xmllint one should be close to trivial using the
C API.
> or a better method to check if a file exists before
> reading it?
Not that I can think of, and that's reasonnable, such an XSLT function
would turn into an horrible security hole I'm afraid :-)
> Alternatively, how can I get libxslt to do XInclude processing
> on the XSL itself (as opposed to the input XML)?
xsltproc does this (--xinclude option), and at the API level
that obviously possible too since xsltproc use the API :-)
Daniel
--
Red Hat Virtualization group http://redhat.com/virtualization/
Daniel Veillard | virtualization library http://libvirt.org/
[EMAIL PROTECTED] | libxml GNOME XML XSLT toolkit http://xmlsoft.org/
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