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296 lines
11 KiB
296 lines
11 KiB
<?xml version="1.0" encoding="UTF-8"?><?xar XSLT?>
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<!--
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OVERVIEW - iso_abstract_expand.xsl
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This is a preprocessor for ISO Schematron, which implements abstract patterns.
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It also
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* extracts a particular schema using an ID, where there are multiple
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schemas, such as when they are embedded in the same NVDL script
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* experimentally, allows parameter recognition and substitution inside
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text as well as @context, @test, & @select.
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This should be used after iso-dsdl-include.xsl and before the skeleton or
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meta-stylesheet (e.g. iso-svrl.xsl) . It only requires XSLT 1.
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Each kind of inclusion can be turned off (or on) on the command line.
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-->
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<!--
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VERSION INFORMATION
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2008-09-18 RJ
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* move out param test from iso:schema template to work with XSLT 1. (Noah Fontes)
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2008-07-29 RJ
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* Create. Pull out as distinct XSL in its own namespace from old iso_pre_pro.xsl
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* Put everything in private namespace
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* Rewrite replace_substring named template so that copyright is clear
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2008-07-24 RJ
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* correct abstract patterns so for correct names: param/@name and
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param/@value
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2007-01-12 RJ
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* Use ISO namespace
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* Use pattern/@id not pattern/@name
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* Add Oliver Becker's suggests from old Schematron-love-in list for <copy>
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* Add XT -ism?
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2003 RJ
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* Original written for old namespace
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* http://www.topologi.com/resources/iso-pre-pro.xsl
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-->
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<!--
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LEGAL INFORMATION
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Copyright (c) 2000-2008 Rick Jelliffe and Academia Sinica Computing Center, Taiwan
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from
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the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not claim
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that you wrote the original software. If you use this software in a product,
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an acknowledgment in the product documentation would be appreciated but is
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not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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-->
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<xslt:stylesheet version="1.0" xmlns:xslt="http://www.w3.org/1999/XSL/Transform"
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xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
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xmlns:iso="http://purl.oclc.org/dsdl/schematron"
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xmlns:nvdl="http://purl.oclc.org/dsdl/nvdl"
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xmlns:iae="http://www.schematron.com/namespace/iae"
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>
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<xslt:param name="schema-id"></xslt:param>
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<!-- Driver for the mode -->
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<xsl:template match="/">
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<xsl:apply-templates select="." mode="iae:go" />
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</xsl:template>
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<!-- ================================================================================== -->
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<!-- Normal processing rules -->
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<!-- ================================================================================== -->
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<!-- Output only the selected schema -->
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<xslt:template match="iso:schema" >
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<xsl:if test="string-length($schema-id) =0 or @id= $schema-id ">
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<xslt:copy>
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<xslt:copy-of select="@*" />
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<xslt:apply-templates mode="iae:go" />
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</xslt:copy>
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</xsl:if>
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</xslt:template>
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<!-- Strip out any foreign elements above the Schematron schema .
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-->
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<xslt:template match="*[not(ancestor-or-self::iso:*)]" mode="iae:go" >
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<xslt:apply-templates mode="iae:go" />
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</xslt:template>
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<!-- ================================================================================== -->
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<!-- Handle Schematron abstract pattern preprocessing -->
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<!-- abstract-to-real calls
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do-pattern calls
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macro-expand calls
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multi-macro-expand
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replace-substring -->
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<!-- ================================================================================== -->
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<!--
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Abstract patterns allow you to say, for example
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<pattern name="htmlTable" is-a="table">
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<param name="row" value="html:tr"/>
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<param name="cell" value="html:td" />
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<param name="table" value="html:table" />
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</pattern>
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For a good introduction, see Uche Ogbujii's article for IBM DeveloperWorks
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"Discover the flexibility of Schematron abstract patterns"
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http://www-128.ibm.com/developerworks/xml/library/x-stron.html
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However, note that ISO Schematron uses @name and @value attributes on
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the iso:param element, and @id not @name on the pattern element.
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-->
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<!-- Suppress declarations of abstract patterns -->
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<xslt:template match="iso:pattern[@abstract='true']" mode="iae:go" >
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<xslt:comment>Suppressed abstract pattern <xslt:value-of select="@id"/> was here</xslt:comment>
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</xslt:template>
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<!-- Suppress uses of abstract patterns -->
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<xslt:template match="iso:pattern[@is-a]" mode="iae:go" >
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<xslt:comment>Start pattern based on abstract <xslt:value-of select="@is-a"/></xslt:comment>
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<xslt:call-template name="iae:abstract-to-real" >
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<xslt:with-param name="caller" select="@id" />
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<xslt:with-param name="is-a" select="@is-a" />
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</xslt:call-template>
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</xslt:template>
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<!-- output everything else unchanged -->
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<xslt:template match="*" priority="-1" mode="iae:go" >
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<xslt:copy>
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<xslt:copy-of select="@*" />
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<xslt:apply-templates mode="iae:go"/>
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</xslt:copy>
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</xslt:template>
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<!-- Templates for macro expansion of abstract patterns -->
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<!-- Sets up the initial conditions for the recursive call -->
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<xslt:template name="iae:macro-expand">
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<xslt:param name="caller"/>
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<xslt:param name="text" />
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<xslt:call-template name="iae:multi-macro-expand">
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<xslt:with-param name="caller" select="$caller"/>
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<xslt:with-param name="text" select="$text"/>
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<xslt:with-param name="paramNumber" select="1"/>
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</xslt:call-template>
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</xslt:template>
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<!-- Template to replace the current parameter and then
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recurse to replace subsequent parameters. -->
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<xslt:template name="iae:multi-macro-expand">
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<xslt:param name="caller"/>
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<xslt:param name="text" />
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<xslt:param name="paramNumber" />
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<xslt:choose>
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<xslt:when test="//iso:pattern[@id=$caller]/iso:param[ $paramNumber]">
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<xslt:call-template name="iae:multi-macro-expand">
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<xslt:with-param name="caller" select="$caller"/>
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<xslt:with-param name="paramNumber" select="$paramNumber + 1"/>
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<xslt:with-param name="text" >
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<xslt:call-template name="iae:replace-substring">
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<xslt:with-param name="original" select="$text"/>
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<xslt:with-param name="substring"
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select="concat('$', //iso:pattern[@id=$caller]/iso:param[ $paramNumber ]/@name)"/>
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<xslt:with-param name="replacement"
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select="//iso:pattern[@id=$caller]/iso:param[ $paramNumber ]/@value"/>
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</xslt:call-template>
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</xslt:with-param>
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</xslt:call-template>
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</xslt:when>
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<xslt:otherwise><xslt:value-of select="$text" /></xslt:otherwise>
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</xslt:choose>
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</xslt:template>
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<!-- generate the real pattern from an abstract pattern + parameters-->
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<xslt:template name="iae:abstract-to-real" >
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<xslt:param name="caller"/>
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<xslt:param name="is-a" />
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<xslt:for-each select="//iso:pattern[@id= $is-a]">
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<xslt:copy>
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<xslt:choose>
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<xslt:when test=" string-length( $caller ) = 0">
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<xslt:attribute name="id"><xslt:value-of select="concat( generate-id(.) , $is-a)" /></xslt:attribute>
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</xslt:when>
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<xslt:otherwise>
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<xslt:attribute name="id"><xslt:value-of select="$caller" /></xslt:attribute>
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</xslt:otherwise>
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</xslt:choose>
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<xslt:apply-templates select="*|text()" mode="iae:do-pattern" >
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<xslt:with-param name="caller"><xslt:value-of select="$caller"/></xslt:with-param>
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</xslt:apply-templates>
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</xslt:copy>
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</xslt:for-each>
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</xslt:template>
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<!-- Generate a non-abstract pattern -->
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<xslt:template mode="iae:do-pattern" match="*">
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<xslt:param name="caller"/>
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<xslt:copy>
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<xslt:for-each select="@*[name()='test' or name()='context' or name()='select']">
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<xslt:attribute name="{name()}">
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<xslt:call-template name="iae:macro-expand">
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<xslt:with-param name="text"><xslt:value-of select="."/></xslt:with-param>
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<xslt:with-param name="caller"><xslt:value-of select="$caller"/></xslt:with-param>
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</xslt:call-template>
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</xslt:attribute>
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</xslt:for-each>
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<xslt:copy-of select="@*[name()!='test'][name()!='context'][name()!='select']" />
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<xsl:for-each select="node()">
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<xsl:choose>
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<!-- Experiment: replace macros in text as well, to allow parameterized assertions
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and so on, without having to have spurious <iso:value-of> calls and multiple
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delimiting -->
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<xsl:when test="self::text()">
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<xslt:call-template name="iae:macro-expand">
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<xslt:with-param name="text"><xslt:value-of select="."/></xslt:with-param>
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<xslt:with-param name="caller"><xslt:value-of select="$caller"/></xslt:with-param>
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</xslt:call-template>
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</xsl:when>
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<xsl:otherwise>
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<xslt:apply-templates select="." mode="iae:do-pattern">
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<xslt:with-param name="caller"><xslt:value-of select="$caller"/></xslt:with-param>
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</xslt:apply-templates>
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</xsl:otherwise>
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</xsl:choose>
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</xsl:for-each>
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</xslt:copy>
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</xslt:template>
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<!-- UTILITIES -->
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<!-- Simple version of replace-substring function -->
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<xslt:template name="iae:replace-substring">
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<xslt:param name="original" />
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<xslt:param name="substring" />
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<xslt:param name="replacement" select="''"/>
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<xsl:choose>
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<xsl:when test="not($original)" />
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<xsl:when test="not(string($substring))">
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<xsl:value-of select="$original" />
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</xsl:when>
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<xsl:when test="contains($original, $substring)">
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<xsl:variable name="before" select="substring-before($original, $substring)" />
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<xsl:variable name="after" select="substring-after($original, $substring)" />
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<xsl:value-of select="$before" />
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<xsl:value-of select="$replacement" />
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<!-- recursion -->
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<xsl:call-template name="iae:replace-substring">
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<xsl:with-param name="original" select="$after" />
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<xsl:with-param name="substring" select="$substring" />
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<xsl:with-param name="replacement" select="$replacement" />
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</xsl:call-template>
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</xsl:when>
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<xsl:otherwise>
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<!-- no substitution -->
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<xsl:value-of select="$original" />
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</xsl:otherwise>
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</xsl:choose>
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</xslt:template>
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</xslt:stylesheet>
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