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Trim Template For XSLT
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Common Trim function for XSLT (as a template)
<xsl:template name="left-trim">
<xsl:param name="s" />
<xsl:choose>
<xsl:when test="substring($s, 1, 1) = ''">
<xsl:value-of select="$s"/>
</xsl:when>
<xsl:when test="normalize-space(substring($s, 1, 1)) = ''">
<xsl:call-template name="left-trim">
<xsl:with-param name="s" select="substring($s, 2)" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$s" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="right-trim">
<xsl:param name="s" />
<xsl:choose>
<xsl:when test="substring($s, 1, 1) = ''">
<xsl:value-of select="$s"/>
</xsl:when>
<xsl:when test="normalize-space(substring($s, string-length($s))) = ''">
<xsl:call-template name="right-trim">
<xsl:with-param name="s" select="substring($s, 1, string-length($s) - 1)" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$s" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="trim">
<xsl:param name="s" />
<xsl:call-template name="right-trim">
<xsl:with-param name="s">
<xsl:call-template name="left-trim">
<xsl:with-param name="s" select="$s" />
</xsl:call-template>
</xsl:with-param>
</xsl:call-template>
</xsl:template>
