+ <func:result select='( $node/self::text() and normalize-text($node) )
+ or f:element-is-span($node)' />
+</func:function>
+
+<!-- Remove leading whitespace from a string -->
+<func:function name='f:strip-leading'>
+ <xsl:param name='str' select='.' />
+ <xsl:param name='curlen' select='string-length($str)' />
+
+ <xsl:variable name='a' select='substring($str, 1, $curlen)' />
+ <xsl:variable name='b' select='substring($str, 1+$curlen)' />
+
+ <xsl:choose>
+ <xsl:when test='2 > $curlen'>
+ <func:result select='concat(normalize-space($a), $b)' />
+ </xsl:when>
+ <xsl:when test='normalize-space($a) = ""'>
+ <func:result select='f:strip-leading($b)' />
+ </xsl:when>
+ <xsl:otherwise>
+ <func:result select='f:strip-leading($str, ceiling($curlen div 2))' />
+ </xsl:otherwise>
+ </xsl:choose>
+</func:function>
+
+<!-- Remove trailing whitespace from a string -->
+<func:function name='f:strip-trailing'>
+ <xsl:param name='str' select='.' />
+ <xsl:param name='curlen' select='string-length($str)' />
+
+ <xsl:variable name='split' select='string-length($str) - $curlen' />
+ <xsl:variable name='a' select='substring($str, 1, $split)' />
+ <xsl:variable name='b' select='substring($str, 1+$split)' />
+
+ <xsl:choose>
+ <xsl:when test='2 > $curlen'>
+ <func:result select='concat($a, normalize-space($b))' />
+ </xsl:when>
+ <xsl:when test='normalize-space($b) = ""'>
+ <func:result select='f:strip-trailing($a)' />
+ </xsl:when>
+ <xsl:otherwise>
+ <func:result select='f:strip-trailing($str, ceiling($curlen div 2))' />
+ </xsl:otherwise>
+ </xsl:choose>
+</func:function>
+
+<!--
+ Convert the given node to a string containing an XHTML listing for that node.
+-->
+<func:function name='f:xhtml-listing'>
+ <xsl:param name='nodeset' select='.' />
+ <xsl:variable name='node' select='$nodeset[1]' />
+
+ <func:result>
+ <xsl:choose>
+ <xsl:when test='$node/self::text()'>
+ <!-- text node -->
+ <xsl:value-of select='$node' />
+ </xsl:when>
+ <xsl:when test='$node/self::comment()'>
+ <!-- comment node -->
+ <xsl:value-of select='concat("<!--", $node, "-->")' />
+ </xsl:when>
+ <xsl:when test='$node/self::*'>
+ <!-- element node -->
+ <xsl:value-of select='concat("<", local-name($node))' />
+ <xsl:value-of select='f:xhtml-listing($node/@*)' />
+ <xsl:if test='not($node/node())'>/</xsl:if>
+ <xsl:value-of select='concat(">", f:xhtml-listing($node/node()))' />
+ <xsl:if test='$node/node()'>
+ <xsl:value-of select='concat("</", local-name($node), ">")' />
+ </xsl:if>
+ </xsl:when>
+ <xsl:when test='$node'>
+ <!-- attribute node -->
+ <xsl:value-of select='concat(" ", local-name($node), "=")' />
+ <xsl:value-of select='concat("'", $node, "'")' />
+ </xsl:when>
+ </xsl:choose>
+ <xsl:for-each select='$nodeset[position()>1]'>
+ <xsl:value-of select='f:xhtml-listing()' />
+ </xsl:for-each>
+ </func:result>