Re: xsl transform flatfile to xml

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
    <xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>
    <xsl:key name="records" match="line" use="c"/>

add:
	<xsl:key name="o" match="o" use="concat(../c,.)"/>

   <xsl:template match="/">
        <results>
            <xsl:apply-templates select="output"/>
        </results>
    </xsl:template>
   <xsl:template match="output">
        <xsl:for-each
            select="line[generate-id() =
generate-id(key('records',c)[1])]">
            <xsl:variable name="pos" select="position()"/>
            <comp id="{$pos}">
                <c>
                    <xsl:value-of select="c"/>
                </c>
               <xsl:call-template name="L2Interface">
                    <xsl:with-param name="parentid" select="$pos"/>
                </xsl:call-template>
               <xsl:call-template name="OSInterface">
                    <xsl:with-param name="parentid" select="$pos"/>
                </xsl:call-template>
           </comp>
        </xsl:for-each>
    </xsl:template>
   <xsl:template name="OSInterface">
        <xsl:param name="parentid"/>
        <xsl:for-each select="key('records',c)[not(o = preceding::o)]">

            <xsl:variable name="index" select="position()"/>
           <o array="{$index}" parent="{$parentid}">
                <name>
                    <xsl:value-of select="o"/>
                </name>
           </o>
        </xsl:for-each>
    </xsl:template>
   <xsl:template name="L2Interface">
        <xsl:param name="parentid"/>
       <xsl:for-each select="key('records',c)[not(l = preceding::l)]">
           <xsl:variable name="index" select="position()"/>
               <l array="{$index}" parent="{$parentid}">
                    <name>
                        <xsl:value-of select="l"/>
                    </name>
               </l>
       </xsl:for-each>
   </xsl:template>
</xsl:stylesheet>