on-error=warn means output a warning that the file is not valid XML, exclude
it from the collection, and then carry on to process other files; in the
end, collection() returns the subset of the files that are valid.
I think you will need an extension function for this. You could write a
CollectionURIResolver that returns the URIs of the files wrapped as XML
documents <text href="file://a/b/c/d.txt"/> and then use unparsed-text() to
read the file; but writing an extension function is no more work and equally
(non-)portable.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Yves Forkl [mailto:Y(_dot_)Forkl(_at_)srz(_dot_)de]
Sent: 01 October 2008 11:07
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] xslt2: Retrieving a directory's non-XML file names
Hi,
from a directory whose path is stored in $myDir I would like
to retrieve the names of all files with extension ".txt". Of
course that could be done easily using shell mecanisms, but I
want to do this using XSLT 2 (with Saxon) only.
That appears to be somewhat difficult, at least I couldn't
find the solution anywhere. Knowing that collection() allows
to access all of the XML documents in a given directory, I tried this:
<xsl:variable name="txt_files" as="xs:string*">
<xsl:for-each
select="collection(concat($myDir,
'?select=*.txt;on-error=warn'))/saxon:discard-document(.)">
<xsl:value-of select="unparsed-entity-uri(.)"/>
</xsl:for-each>
</xsl:variable>
This gives me
"Error SXXP0003: Error reported by XML parser: Premature end of file.
Transformation failed: Run-time errors were reported"
I guess the reason is that collection() is unable to return
the document node for any of these text files.
So how to obtain the list of .txt files from my directory in XSLT 2?
Yves
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