Dear Ken,
Thank you for the prompt reply! I cannot use the "intersect" operator
because it is XPath 2.0, but your suggestion made me look into how I can
get the intersection of two node sets with XPath 1.0, and so I found out
that there is the so-called Kaysian method for that, namely:
$node_set_1[count(. | $node_set_2) = count($node_set_2)]
Hence, in my case the solution is:
<xsl:variable name="node_set_1" select="following-sibling::foo"/>
<xsl:variable name="node_set_2"
select="following-sibling::*[not(self::foo)][1]/preceding-sibling::foo "/>
<xsl:copy-of select="$node_set_1[count(. | $node_set_2) =
count($node_set_2)]"/>
Thanks again!
Wolfhart
On 17-02-21 23:12, G. Ken Holman g(_dot_)ken(_dot_)holman(_at_)gmail(_dot_)com
wrote:
Would something like the following work for you?
following-sibling::foo intersect
following-sibling::*[not(self::foo)][1]/preceding-sibling::foo
. . . . . . . Ken
At 2021-02-18 01:32 +0000, Wolfhart Totschnig
wolfhart(_dot_)totschnig(_at_)mail(_dot_)udp(_dot_)cl wrote:
Content-Transfer-Encoding: 8bit
Dear list,
I am facing an XPath problem for which I cannot find the solution. I
want to select all following sibling elements of name "foo" up to the
first non-"foo" element. So, in the following case, the first two
<foo> elements should be selected:
<foo/>
<foo/>
<bar/>
<foo/>
In the following case, all three <foo> elements should be selected:
<foo/>
<foo/>
<foo/>
And in the following case, nothing should be selected:
<bar/>
<foo/>
<foo/>
I came up with the following non-working approach:
<xsl:choose>
<xsl:when
test="not(following-sibling::*[not(self::foo)])">
<xsl:value-of select="following-sibling::*"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of
select="following-sibling::*[not(self::source)][1]/preceding-sibling::*[self::source][preceding-sibling::current()]"/>
</xsl:otherwise>
</xsl:choose>
That is, test whether there are non-"foo" following siblings. If
there are none, take all following siblings. If there are, go forward
to the first non-"foo" sibling, and from there go backwards, taking
all the "foo" siblings up to the current node.
But this does not work. Apparently, the expression
"preceding-sibling::current()" is not a valid construct. So what is
the correct way to do what I have in mind (or a simpler solution, if
there is one). Please note that this stylesheet needs to be executed
by a web browser, and so the solution has to remain within XPath 1.0.
Thanks in advance for your help!
Wolfhart
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