LogIt!

I've assembled the following hack after gathering some ideas from the net. It allows to have a copy of the source tree in the output, but unlike <xsl:copy>, it outputs the copy as text with XML escaping. Limitation is that it only supports elements, text nodes and attributes. But this can easily be extended if need arises.

   <!-- the hack below outputs escaped copy of the current node set -->
    <xsl:template match="*|@*" mode="verb">
        <xsl:variable name="node-type">
            <xsl:call-template name="node-type"/>
        </xsl:variable>
        <xsl:choose>
            <xsl:when test="$node-type='element'"> <!-- element -->
                <xsl:text>&lt;</xsl:text>
                <xsl:value-of select="name()"/>
                <xsl:apply-templates select="@*" mode="verb"/>
                <xsl:text>&gt;</xsl:text>
                <xsl:apply-templates mode="verb"/>
                <xsl:text>&lt;/</xsl:text>
                <xsl:value-of select="name()"/>
                <xsl:text>&gt;</xsl:text>
            </xsl:when>
            <xsl:when test="$node-type='text'"> <!-- text -->
                <xsl:value-of select="self::text()"/>
            </xsl:when>
            <xsl:when test="$node-type='attribute'"> <!--any attribute-->
                <xsl:text> </xsl:text>
                <xsl:value-of select="name()"/>
                <xsl:text>="</xsl:text>
                <xsl:value-of select="."/>
                <xsl:text>"</xsl:text>
            </xsl:when>
        </xsl:choose>
    </xsl:template>

    <xsl:template name="node-type">
        <xsl:param name="node" select="."/>
        <xsl:apply-templates mode="nodetype" select="$node"/>
    </xsl:template>
    <xsl:template mode="nodetype" match="*">element</xsl:template>
    <xsl:template mode="nodetype" match="@*">attribute</xsl:template>
    <xsl:template mode="nodetype" match="text()">text</xsl:template>

Labels: xml xsl xslt programming