214 lines
7.6 KiB
HTML
214 lines
7.6 KiB
HTML
<?xml version="1.0"?>
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<xsl:stylesheet version="1.0"
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xmlns:ca="urn:ietf:params:xml:ns:pidf:geopriv10:civicAddr"
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xmlns:def="urn:ietf:params:xml:ns:pidf"
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xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model"
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xmlns:fn="http://www.w3.org/2005/xpath-functions"
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xmlns:gbp="urn:ietf:params:xml:ns:pidf:geopriv10:basicPolicy"
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xmlns:gml="http://www.opengis.net/gml"
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xmlns:gp="urn:ietf:params:xml:ns:pidf:geopriv10"
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xmlns:gs="http://www.opengis.net/pidflo/1.0"
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xmlns:con="urn:ietf:params:xml:ns:geopriv:conf"
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xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
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<!--
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The whole purpose of this stylesheet is to convert a PIDF-LO document into a simple,
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common XML document that is easily parsable by geoloc_eprofile into an eprofile.
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For example:
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<presence>
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<device>
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<location-info format="GML">shape="Point", crs="2d", pos="38.456 -105.678"</location-info>
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<usage-rules>retransmission-allowed=no</usage-rules>
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<method>GPS</method>
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</device>
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</presence>
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WARNING: Don't mess with this stylesheet before brushing up your
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XPath and XSLT expertise.
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-->
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<!--
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All of the namespaces that could be in the incoming PIDF-LO document
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have to be declared above. All matching is done based on the URI, not
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the prefix so we can use whatever prefixes we want. For instance,
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even if "urn:ietf:params:xml:ns:pidf:data-model" were declared with
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the "pdm" prefix in the incoming document and with "dm" here,
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"dm:device" would match "pdm:device" in the document.
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-->
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<xsl:output method="xml" indent="yes"/>
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<xsl:strip-space elements="*"/>
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<!--
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Even though the "presence", "tuple", and "status" elements won't have namespaces in the
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incoming PIDF document, we have to use the pseudo-namespace "def" here because of namespace
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processing quirks in libxml2 and libxslt. We don't use namespace prefixes in the output
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document at all.
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-->
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<xsl:template match="/def:presence">
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<xsl:element name="presence">
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<xsl:attribute name="entity"><xsl:value-of select="@entity"/></xsl:attribute>
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<!--
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We only want devices, tuples and persons (in that order) that
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have location-info elements.
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-->
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<xsl:apply-templates select="dm:device[./gp:geopriv/gp:location-info]"/>
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<xsl:apply-templates select="def:tuple[./def:status/gp:geopriv/gp:location-info]"/>
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<xsl:apply-templates select="dm:person[.//gp:geopriv/gp:location-info]"/>
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</xsl:element>
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</xsl:template>
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<xsl:template name="geopriv">
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<xsl:apply-templates select=".//gp:geopriv/gp:location-info"/>
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<xsl:apply-templates select=".//gp:geopriv/gp:usage-rules"/>
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<xsl:apply-templates select=".//gp:geopriv/gp:method"/>
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<xsl:apply-templates select=".//gp:geopriv/gp:note-well"/>
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</xsl:template>
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<xsl:template match="def:tuple">
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<xsl:element name="tuple">
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<xsl:attribute name="id"><xsl:value-of select="@id"/></xsl:attribute>
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<xsl:call-template name="geopriv"/>
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<xsl:apply-templates select="./def:timestamp"/>
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</xsl:element>
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</xsl:template>
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<xsl:template match="dm:device|dm:person">
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<xsl:element name="{local-name(.)}">
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<xsl:attribute name="id"><xsl:value-of select="@id"/></xsl:attribute>
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<xsl:call-template name="geopriv"/>
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<xsl:apply-templates select="./dm:timestamp"/>
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<!-- deviceID should only apply to devices -->
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<xsl:if test="./dm:deviceID">
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<deviceID>
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<xsl:value-of select="./dm:deviceID"/>
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</deviceID>
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</xsl:if>
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</xsl:element>
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</xsl:template>
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<xsl:template match="gp:geopriv/gp:location-info">
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<xsl:element name="location-info">
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<xsl:choose>
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<xsl:when test="ca:civicAddress">
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<xsl:attribute name="format">civicAddress</xsl:attribute>
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</xsl:when>
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<xsl:when test="gml:*">
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<xsl:attribute name="format">gml</xsl:attribute>
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</xsl:when>
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<xsl:when test="gs:*">
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<xsl:attribute name="format">gml</xsl:attribute>
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</xsl:when>
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</xsl:choose>
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<xsl:apply-templates/> <!-- Down we go! -->
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</xsl:element>
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</xsl:template>
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<!-- Civic Address -->
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<xsl:template match="gp:location-info/ca:civicAddress">
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<xsl:element name="civicAddress">
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<xsl:attribute name="lang"><xsl:value-of select="@xml:lang"/></xsl:attribute>
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<!-- The for-each seems to be slightly faster than applying another template -->
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<xsl:for-each select="./*">
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<xsl:call-template name="name-value" />
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</xsl:for-each>
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</xsl:element>
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</xsl:template>
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<!-- End of Civic Address. Back up to location-info. -->
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<!-- The GML shapes: gml:Point, gs:Circle, etc. -->
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<xsl:template match="gp:location-info/gml:*|gp:location-info/gs:*">
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<xsl:element name="{local-name(.)}">
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<xsl:choose>
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<xsl:when test="@srsName = 'urn:ogc:def:crs:EPSG::4326'">
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<xsl:attribute name="srsName">2d</xsl:attribute>
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</xsl:when>
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<xsl:when test="@srsName = 'urn:ogc:def:crs:EPSG::4979'">
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<xsl:attribute name="srsName">3d</xsl:attribute>
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</xsl:when>
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<xsl:otherwise>
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<xsl:attribute name="srsName">unknown</xsl:attribute>
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</xsl:otherwise>
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</xsl:choose>
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<xsl:apply-templates /> <!-- Down we go! -->
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</xsl:element>
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</xsl:template>
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<!-- The supported GML attributes -->
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<xsl:template match="gs:orientation"><xsl:call-template name="angle" /></xsl:template>
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<xsl:template match="gs:radius"><xsl:call-template name="length" /></xsl:template>
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<xsl:template match="gs:height"><xsl:call-template name="length" /></xsl:template>
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<xsl:template match="gs:semiMajorAxis"><xsl:call-template name="length" /></xsl:template>
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<xsl:template match="gs:semiMinorAxis"><xsl:call-template name="length" /></xsl:template>
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<xsl:template match="gs:verticalAxis"><xsl:call-template name="length" /></xsl:template>
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<xsl:template match="gs:innerRadius"><xsl:call-template name="length" /></xsl:template>
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<xsl:template match="gs:outerRadius"><xsl:call-template name="length" /></xsl:template>
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<xsl:template match="gs:startAngle"><xsl:call-template name="angle" /></xsl:template>
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<xsl:template match="gs:openingAngle"><xsl:call-template name="angle" /></xsl:template>
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<xsl:template match="gml:pos"><xsl:call-template name="name-value" /></xsl:template>
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<xsl:template match="gml:posList"><xsl:call-template name="name-value" /></xsl:template>
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<!-- The GML attribute types -->
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<xsl:template name="name-value">
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<xsl:element name="{local-name(.)}">
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<xsl:value-of select="normalize-space(.)"/>
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</xsl:element>
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</xsl:template>
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<xsl:template name="length"><xsl:call-template name="name-value" /></xsl:template>
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<xsl:template name="angle">
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<xsl:element name="{local-name(.)}">
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<xsl:choose>
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<xsl:when test="@uom = 'urn:ogc:def:uom:EPSG::9102'">
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<xsl:attribute name="uom">radians</xsl:attribute></xsl:when>
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<xsl:otherwise>
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<xsl:attribute name="uom">degrees</xsl:attribute></xsl:otherwise>
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</xsl:choose>
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<xsl:value-of select="normalize-space(.)"/>
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</xsl:element>
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</xsl:template>
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<!-- End of GML. Back up to location-info -->
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<xsl:template match="gp:location-info/con:confidence">
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<xsl:element name="{local-name(.)}">
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<xsl:attribute name="pdf"><xsl:value-of select="@pdf"/></xsl:attribute>
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<xsl:value-of select="normalize-space(.)" />
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</xsl:element>
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</xsl:template>
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<!-- End of location-info. Back up to geopriv -->
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<xsl:template match="gp:geopriv/gp:usage-rules">
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<xsl:element name="usage-rules">
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<xsl:for-each select="./*">
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<xsl:call-template name="name-value" />
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</xsl:for-each>
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</xsl:element>
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</xsl:template>
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<xsl:template match="gp:geopriv/gp:method">
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<xsl:call-template name="name-value" />
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</xsl:template>
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<xsl:template match="gp:geopriv/gp:note-well">
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<xsl:element name="note-well">
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<xsl:value-of select="." />
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</xsl:element>
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</xsl:template>
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<!-- End of geopriv. Back up to device/tuple/person -->
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<xsl:template match="def:timestamp|dm:timestamp">
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<xsl:call-template name="name-value" />
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</xsl:template>
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</xsl:stylesheet>
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