Transform an int to a char

Question

I'd like to write the alphabet with a link for each letter. So I used templates but I don't how to make this letter I tried that but I had a normal mistake : (A decimal representation must imediately follow the &# in a character reference).

<xsl:template name="alphabet">
    <xsl:param name="iLetter"/>
    <xsl:if test="$iLetter &lt; 91">
        <a><xsl:attribute name="href">req.html?X_letter=&#<xsl:value-of select="$iLetter"/>;</xsl:attribute>&#<xsl:value-of select="$iLetter"/>;</xsl:attribute></a>
        <xsl:call-template name="alphabet">
            <xsl:with-param name="iLetter" select="number($iLetter)+1"/>
        </xsl:call-template>
    </xsl:if>
</xsl:template>

And I call this template ilke that:

<xsl:call-template name="alphabet">
        <xsl:with-param name="iLetter" select="number(65)"/>
</xsl:call-template>

So, I'd like to obtain this result:

A B C D ..... X Y Z without ... of course :)

Answer 1

As Martin suggests it would be better to avoid using disable-output-escaping. You don't need it either, if you are would be satisfied with a plain ascii character instead of the numerical character reference. If so, you can use substring and a alphabet lookup-string like this:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:variable name="alphabet" select="'ABCDEFGHIJKLMNOPQRSTUVWXYZ'"/>

    <xsl:template name="alphabet"> 
        <xsl:param name="iLetter" select="65"/> 
        <xsl:if test="$iLetter &lt; 91"> 
            <a>
                <xsl:attribute name="href">req.html?X_letter=<xsl:value-of select="substring($alphabet, $iLetter - 64, 1)"/></xsl:attribute>
                <xsl:value-of select="substring($alphabet, $iLetter - 64, 1)"/>
            </a> 
            <xsl:call-template name="alphabet"> 
                <xsl:with-param name="iLetter" select="number($iLetter)+1"/> 
            </xsl:call-template> 
        </xsl:if> 
    </xsl:template> 

    <xsl:template match="/">
        <xsl:call-template name="alphabet"/> 
    </xsl:template>
</xsl:stylesheet> 

Cheers!