how to force the return value of xsl:function to be a string

apollo13 · September 3rd, 2010, 09:57 AM

Hi,

I am trying to use <xsl:value-of select="my_func()"/>, but I get spaces in the output. This happens cause the return value is a sequence (I guess); how can I force it to be a string?

I am currently using a wrapper function, which does string-join, like this: http://paste.pocoo.org/show/258039/ I guess there is an easier way, but I don't know of one.

Thx,
apollo13

Martin Honnen · September 3rd, 2010, 10:04 AM

Well you can fix the xsl:value-of

Code:

<xsl:value-of select="my_func()" separator=""/>

or you can fix the function e.g.

Code:

<xsl:function name="bap:to_csv_internal" as="xs:string">
  <xsl:param name="data" as="xs:string+"/>
  <xsl:sequence select="string-join((bap:quote_for_csv($data[1]), $data[position() gt 1]), '')"/>
</xsl:function>

samjudson · September 3rd, 2010, 10:06 AM

Converting a sequence to a string will by default add spaces between the sequence items.

If you use <xsl:value-of select="sequence" separator =""/> then the separator will be empty string.

However, you don't show us your function, so it might be that the conversion from sequence to string might already have happened in the function, so changing the value on this <xsl:value-of> instruction might make no difference.

apollo13 · September 3rd, 2010, 10:17 AM

right, stupid me, I am using:

Code:

<xsl:function name="bap:to_csv" as="xs:string">
  <xsl:param name="data" as="xs:string+"/>
  <xsl:value-of select="string-join((for $i in $data return bap:quote_for_csv($i)), $csv_delimiter)"/>
</xsl:function>

now.

thx for the quick reply,
Florian

apollo13 · September 3rd, 2010, 10:20 AM

Quote:

Originally Posted by samjudson

However, you don't show us your function, so it might be that the conversion from sequence to string might already have happened in the function, so changing the value on this <xsl:value-of> instruction might make no difference.

The function in question is in the linked paste (bap:to_csv), but thx, I already solved it.