Re: [xsl] Inserting a separator only between non-empty strings (XSLT 2)

[mozer <xmlizer@xxxxxxxxx>]

and what about that ?

<xsl:variable name="concat">
<xsl:sequence>
 <xsl:value-of select="$a"/>
 <xsl:value-of select="$b"/>
 <xsl:value-of select="$c"/>
</xsl:sequence>
</xsl:variable>
<xsl:value-of separator="|" select="$concat[string-length(.) gt 0]"/>


Xmlizer

On 5/18/07, Yves Forkl <Y.Forkl@xxxxxx> wrote:
> Hi,
>
> I am kindly asking for help with the following problem. It looks like a
> FAQ, but I couldn't find it in Dave Pawson's XSLT 2 FAQ section.
>
> I am declaring 3 variables named a, b, c which must receive their values
> not from the "select" attribute of xsl:variable, but from its element
> contents which contain each zero, one or more instances of xsl:text,
> xsl:value-of or xsl:sequence. All 3 variables are meant to convey
> strings only - but I suppose, as a consequence of the way they are
> declared, they actually carry text nodes.
>
> Which is the easiest way to join these 3 values into the value of a new
> variable named result (just a string), given that only those values
> which evaluate to non-empty strings should be separated by "|"?
>
> Do I need explicit testing on each value for the empty string or can I
> use a more concise technique?
>
> I tried
>
> <xsl:variable name="result">
>   <xsl:value-of separator="|">
>     <xsl:value-of select="$a"/>
>     <xsl:value-of select="$b"/>
>     <xsl:value-of select="$c"/>
>   </xsl:value-of>
> </xsl:variable>
>
> but this does never insert a separator. Replacing xsl:value-of with
> xsl:sequence for the variable references always inserts the separator,
> even near empty strings which is what I want to avoid.
>
>   Yves