Thanks David, thanks Gerrit. At the moment, your solutions both works on my test
cases (I need only to change
<xsl:template match="body" name="x"> <-------------- match body element
<xsl:param name="level" select="1"/> <-------------- default level=1
<xsl:param name="content" select="*"/>
in David solution).
I've correct my xslt and it seems to work too, but it is not so nice and compact
as yours (I've a lot to learn :-) ):
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; version="2.0">
<xsl:output method="xhtml" indent="yes"/>
<!-- IT: identità -->
<!-- EN: identity -->
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
<!-- IT: body del documento html -->
<!-- EN: body of html document -->
<xsl:template match="body">
<!-- IT: selezione primi gruppi e innesco della ricorsione -->
<!-- EN: first groups selection and starting of recursion -->
<body>
<xsl:for-each-group select="*"
group-starting-with="*[local-name()='h1'
or (local-name()='h2' and count(preceding-sibling::h1)=0)
or (local-name()='h3' and count(preceding-sibling::h1
| preceding-sibling::h2 )=0)
or (local-name()='h4' and count(preceding-sibling::h1
| preceding-sibling::h2 | preceding-sibling::h3 )=0)
or (local-name()='h5' and count(preceding-sibling::h1
| preceding-sibling::h2 | preceding-sibling::h3 | preceding-sibling::h4 )=0)
or (local-name()='h6' and count(preceding-sibling::h1 |
preceding-sibling::h2 | preceding-sibling::h3 | preceding-sibling::h4 |
preceding-sibling::h5 )=0)
]">
<xsl:call-template name="gruppo"/>
</xsl:for-each-group>
</body>
</xsl:template>
<!-- IT: template che processa il singolo gruppo, ricorsivo -->
<!-- EN: template processing a single group, recursive -->
<xsl:template name="gruppo">
<xsl:variable name="inizio" select="."/>
<xsl:choose>
<!-- IT: l'elemento iniziale è un header, quindi
devo creare il div -->
<!-- EN: the first element in group is a header,
thus a div must be inserted -->
<xsl:when
test="local-name()='h1' or local-name()='h2' or
local-name()='h3' or local-name()='h4' or
local-name()='h5' or local-name()='h6'">
<xsl:element name="div">
<!-- IT: attributo class del div pari al
nome dell'header -->
<!-- EN: div class attribute, value equal to header
local-name -->
<xsl:attribute name="class">
<xsl:value-of select="local-name()"/>
</xsl:attribute>
<!-- IT: ricopiamo il tag dell'header -->
<!-- EN: recreate the header -->
<xsl:element name="{local-name()}">
<xsl:apply-templates select="@*|node()"/>
</xsl:element>
<!-- IT: processiamo il gruppo corrente, a meno del primo
elemento che abbiamo appena inserito -->
<!-- EN: current group processing, with first element
exclusion -->
<xsl:for-each-group select="current-group() except ."
group-starting-with="*[ (local-name()='h1'
or (local-name()='h2' and
count(preceding-sibling::h1[.>>$inizio])=0)
or (local-name()='h3' and
count((preceding-sibling::h1[.>>$inizio]) |
(preceding-sibling::h2[.>>$inizio]) )=0)
or (local-name()='h4' and
count((preceding-sibling::h1[.>>$inizio]) |
(preceding-sibling::h2[.>>$inizio]) |
(preceding-sibling::h3[.>>$inizio]) )=0)
or (local-name()='h5' and
count((preceding-sibling::h1[.>>$inizio]) |
(preceding-sibling::h2[.>>$inizio]) |
(preceding-sibling::h3[.>>$inizio]) |
(preceding-sibling::h4[.>>$inizio]) )=0)
or (local-name()='h6' and
count((preceding-sibling::h1[.>>$inizio]) |
(preceding-sibling::h2[.>>$inizio]) |
(preceding-sibling::h3[.>>$inizio]) |
(preceding-sibling::h4[.>>$inizio]) |
(preceding-sibling::h5[.>>$inizio]) )=0) )
]">
<xsl:call-template name="gruppo"/>
</xsl:for-each-group>
</xsl:element>
</xsl:when>
<!-- IT: il gruppo corrente non inizia con un header, quindi non va
inserito un div -->
<!-- EN: the current group first element is not a header, thus no
div is required -->
<xsl:otherwise>
<xsl:choose>
<!-- IT: se non ci sono header, ricopiamo gli elementi del gruppo -->
<!-- EN: if not header in the group, copy the current-group elements -->
<xsl:when
test="count(current-group()[self::h1 | self::h2 |
self::h3 | self::h4 | self::h5 | self::h6])=0">
<xsl:for-each select="current-group()">
<xsl:apply-templates select="current()"/>
</xsl:for-each>
</xsl:when>
<!-- IT: se ci sono header, allora occorre continuare con la ricorsione -->
<!-- EN: if there are headers, thus the recursion must proceed -->
<xsl:otherwise>
<!-- IT: ricopiamo il tag del primo elemento -->
<!-- EN: the first element must be copied -->
<xsl:element name="{local-name()}">
<xsl:apply-templates select="@*|node()"/>
</xsl:element>
<!-- IT: processiamo il gruppo corrente, a meno del
primo elemento che abbiamo appena inserito -->
<!-- EN: current group processing, with first element exclusion -->
<xsl:for-each-group select="current-group() except ."
group-starting-with="*[
(local-name()='h1' or (local-name()='h2' and
count(preceding-sibling::h1[.>>$inizio])=0)
or (local-name()='h3' and
count((preceding-sibling::h1[.>>$inizio]) |
(preceding-sibling::h2[.>>$inizio]) )=0)
or (local-name()='h4' and
count((preceding-sibling::h1[.>>$inizio]) |
(preceding-sibling::h2[.>>$inizio]) |
(preceding-sibling::h3[.>>$inizio]) )=0)
or (local-name()='h5' and
count((preceding-sibling::h1[.>>$inizio]) |
(preceding-sibling::h2[.>>$inizio]) |
(preceding-sibling::h3[.>>$inizio]) |
(preceding-sibling::h4[.>>$inizio]) )=0)
or (local-name()='h6' and
count((preceding-sibling::h1[.>>$inizio]) |
(preceding-sibling::h2[.>>$inizio]) |
(preceding-sibling::h3[.>>$inizio]) |
(preceding-sibling::h4[.>>$inizio]) |
(preceding-sibling::h5[.>>$inizio]) )=0) )
]">
<xsl:call-template name="gruppo"/>
</xsl:for-each-group>
</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- IT: processiamo l'header html per inserire lo stile prima
di processare il resto -->
<!-- EN: processing html header to place some CSS for debug -->
<xsl:template match="head">
<head>
<xsl:message>
<xsl:text>head</xsl:text>
</xsl:message>
<style type="text/css">
div.h1{
border-width:1;
border:solid;
background-color:#FFFF33;
width:95%;
}
div.h2{
border-width:1;
border:solid;
background-color:#FF9933;
width:95%;
}
div.h3{
border-width:1;
border:solid;
background-color:#FF0033;
width:95%;
}
div.h4{
border-width:1;
border:solid;
background-color:#99FFFF;
width:95%;
}
div.h5{
border-width:1;
border:solid;
background-color:#9999FF;
width:95%;
}
div.h6{
border-width:1;
border:solid;
background-color:#9933FF;
width:95%;
}</style>
<xsl:apply-templates/>
</head>
</xsl:template>
</xsl:stylesheet>
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