[xsl] Conditional String Substitution

[Nathan Potter <ndp@xxxxxxxxxxxxxxxxxxxx>]

Greetings,

I need to do some string manipulation of an attribute value using XSLT.

I need to look at the value of the attribute "href" and determine if  
it ends in the suffix ".xml"

If so then I need to replace the ".xml" suffix with a ".html" suffix.

I got it to work using a pretty convoluted set of XPath expressions  
in conjunction with xsl:if but I think that I am missing something...

Is there a more straight forward way of accomplishing this?


Example(s):

    <xsl:template match="thredds:catalogRef">

        <xsl:variable name="href" select="./@xlink:href" />
        <xsl:variable name="linkSuffix" select="substring 
($href,string-length($href) - 3)" />
        <xsl:variable name="linkBody" select="substring($href, 
1,string-length($href) - 4)" />

        <xsl:if test="$linkSuffix='.xml'">
            <xsl:value-of select="$indent"/><a href="{concat 
($linkBody,'.html')}" ><xsl:value-of select="./@xlink:title"/> /</a>
        </xsl:if>

        <xsl:if test="not($linkSuffix='.xml')">
            <xsl:value-of select="$indent"/><a href="{$href}"  
><xsl:value-of select="./@xlink:title"/> /</a>
        </xsl:if>

    </xsl:template>



I used a bunch of variables in the example simply to make it more  
readable, the example could be condensed to:

    <xsl:template match="thredds:catalogRef">

        <xsl:if test="substring(./@xlink:href,string-length(./ 
@xlink:href) - 3)='.xml'">
            <a href="{concat(substring(./@xlink:href,1,string-length 
(./@xlink:href) - 4),'.html')}" ><xsl:value-of select="./ 
@xlink:title"/> /</a>
        </xsl:if>

        <xsl:if test="not(substring(./@xlink:href,string-length(./ 
@xlink:href) - 3))">
            <a href="{./@xlink:href}" ><xsl:value-of select="./ 
@xlink:title"/> /</a>
        </xsl:if>
        <br/>

    </xsl:template>

Thanks!

Nathan






============================================================
Nathan Potter                 Oregon State University, COAS
ndp at coas.oregonstate.edu   104 Ocean. Admin. Bldg.
541 737 2293 voice            Corvallis, OR   97331-5503
541 737 2064 fax