I am using the XSLT processor available in PHP to transform an XML file. When my XML file is a sample file everything is ok but when I try to process a file with something like 1000 lines I have this error:
Warning: XSLTProcessor::transformToXml(): xsltApplyXSLTTemplate: A potential infinite template recursion was detected. You can adjust xsltMaxDepth (--maxdepth) in order to raise the maximum number of nested template calls and variables/params (currently set to 3000)
My xml file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<TEI xmlns="http://ift.tt/1dDT9n4">
<teiHeader xml:lang="en" />
<text>
<body>
<div type="chapter" n="1">
<p>
<s xml:id="e_1">In my younger and more vulnerable years my father gave me some advice that I've been turning over in my mind ever since.</s>
</p>
<p>
<s xml:id="e_2">"Whenever you feel like criticizing any one," he told me, "just remember that all the people in this world haven't had the advantages that you've had."</s>
</p>
</body>
</text>
</TEI>
and my XSLT treatment is:
<xsl:stylesheet version="1.0"
xmlns:xsl="http://ift.tt/tCZ8VR"
xmlns:exsl="http://exslt.org/common"
xmlns:set="http://exslt.org/sets"
xmlns:tei="http://ift.tt/1dDT9n4"
extension-element-prefixes="exsl set">
<xsl:output method="xml" version="1.0" encoding="utf-8" indent="yes"/>
<xsl:strip-space elements="*"/>
<!-- identity transform -->
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<xsl:template match="tei:div">
<xsl:call-template name="split-chapter">
<xsl:with-param name="nodes" select="tei:p/tei:s"/>
</xsl:call-template>
</xsl:template>
<xsl:template name="split-chapter">
<xsl:param name="nodes"/>
<xsl:param name="limit" select="300"/>
<xsl:param name="remaining-nodes" select="dummy-node"/>
<!-- 1. Calculate the total length of nodes -->
<xsl:variable name="lengths">
<xsl:for-each select="$nodes">
<length>
<xsl:value-of select="string-length()" />
</length>
</xsl:for-each>
</xsl:variable>
<xsl:variable name="total-length" select="sum(exsl:node-set($lengths)/length)" />
<!-- 2. Process the chapter: -->
<xsl:choose>
<!-- If chapter is too long and can be shortened ... -->
<xsl:when test="$total-length > $limit and count($nodes) > 1">
<!-- ... try again with one node less. -->
<xsl:call-template name="split-chapter">
<xsl:with-param name="nodes" select="$nodes[not(position()=last())]"/>
<xsl:with-param name="remaining-nodes" select="$remaining-nodes | $nodes[last()]"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<!-- Otherwise create a chapter with the current nodes ... -->
<div type="chapter" n="{@n}" length="{$total-length}" >
<!-- ... list the paras participating in this chapter ... -->
<xsl:for-each select="$nodes/parent::tei:p">
<p>
<!-- ... and process the nodes still left in each para. -->
<xsl:apply-templates select="set:intersection(tei:s, $nodes)"/>
</p>
</xsl:for-each>
</div>
<!-- Then process any remaining nodes. -->
<xsl:if test="$remaining-nodes">
<xsl:call-template name="split-chapter">
<xsl:with-param name="nodes" select="$remaining-nodes"/>
</xsl:call-template>
</xsl:if>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
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