In Saxon, just use xsl:for-each
select="unparsed-text-lines(...)".
IIRC the Saxon 9.5
implementation is streamed, but its definition of "lines" is
based on Java readLine() which has some subtle differences from the
definition in the XPath spec as to exactly what counts as a line
ending.
xsl:stream is only for use with XML input.
Michael
Kay
Saxonica
Hi Folks,
In Abel Braaksma's XML London paper he writes:
This paper discusses streaming of XML, but XPath 3.0
introduces a new function, fn:unparsed-text-lines,
which takes an external resource as input and parses it
line by line. The original intent of that function was to
allow unparsed data to be streamed; however, the
Working Group at some point decided to not formalize
this requirement. But, the specification leaves
enough room for implementers to allow streamed
processing of data read through this function. When
your intention is to do streaming of unparsed input, you
should check the capabilities of your processor to find
out whether it can do streaming using this function.
Neat!
So, I have two questions:
1. Do any XSLT processors support streaming of non-XML text using
unparsed-text-lines( )?
2. Suppose the XSLT processor is streaming the strings returned
from
calling unparsed-text-lines( ), how would I construct the XSLT
program?
Example: Here is a non-XML text file:
Six Great Ideas/Mortimer J. Adler/1981/0-02-072020-3/Macmillan
Publishing
Company
Illusions/Richard Bach/1977/0-440-34319-4/Dell Publishing Co.
The First and Last Freedom/J. Krishnamurti/1954/0-06-064831-7/Harper
&
Row
I want to stream-process it. I want to count the number of lines.
Below is
my attempt at an XSLT program to implement this. I am not sure that
the
code even makes sense. Does it? What is the right way to do it?
/Roger
-----------------------------------------------------
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="3.0">
<xsl:output method="xml" />
<xsl:template match="/">
<xsl:stream
href="unparsed-text-lines('BookCatalogue.txt')">
<count>
<xsl:value-of select="count(tokenize(., '\n'))" />
</count>
</xsl:stream>
</xsl:template>
</xsl:stylesheet>
-----------------------------------------------------
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