77 lines
2.1 KiB
XML
77 lines
2.1 KiB
XML
<?xml version='1.0' encoding='UTF-8' ?>
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<!--
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Normalize an XML document to make it easier to compare whether 2 documents will
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be seen as "equal" to an XML processor.
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The normalization is similiar, in spirit, to {@link https://www.w3.org/TR/xml-c14n11/ Canonical XML},
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but without some aspects of C14N that make the kinds of assertions we need difficult.
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For example, the following XML documents will be interpreted the same by an XML processor,
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even though a string comparison of them would show differences:
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<root xmlns='urn:example'>
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<ns0:child xmlns:ns0='urn:another-example'>this is a test</ns0:child>
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</root>
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<ns0:root xmlns:ns0='urn:example'>
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<child xmlns='urn:another-example'>this is a test</child>
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</ns0:root>
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-->
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<xsl:transform
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xmlns:xsl='http://www.w3.org/1999/XSL/Transform'
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version='1.0'
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>
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<!--
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Output UTF-8 XML, no indendation and all CDATA sections replaced with their character content.
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-->
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<xsl:output
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method='xml'
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indent='no'
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cdata-section-elements=''
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encoding='UTF-8' />
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<!--
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Strip insignificant white space.
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-->
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<xsl:strip-space elements='*' />
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<!--
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Noramlize elements by not relying on the prefix used in the input document
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and ordering attributes first by namespace-uri and then by local-name.
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-->
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<xsl:template match='*' priority='10'>
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<xsl:element name='{local-name()}' namespace='{namespace-uri()}'>
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<xsl:apply-templates select='@*'>
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<xsl:sort select='namespace-uri()' />
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<xsl:sort select='local-name()' />
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</xsl:apply-templates>
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<xsl:apply-templates select='node()' />
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</xsl:element>
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</xsl:template>
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<!--
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Noramlize attributes by not relying on the prefix used in the input document.
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-->
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<xsl:template match='@*'>
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<xsl:attribute name='{local-name()}' namespace='{namespace-uri()}'>
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<xsl:value-of select='.' />
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</xsl:attribute>
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</xsl:template>
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<!--
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Strip comments.
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-->
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<xsl:template match='comment()' priority='10' />
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<!--
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Pass all other nodes through unchanged.
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-->
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<xsl:template match='node()'>
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<xsl:copy>
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<xsl:apply-templates select='node()' />
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</xsl:copy>
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</xsl:template>
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</xsl:transform>
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