This should do it. You need the 2 copyall templates from Ken Holman then your template that does special processing of the parent of the elements you want to change their order within the parent. I was a bit lazy and added this to the root of the style sheet 
xpath-default-namespace="http://schemas.microsoft.com/wix/2006/wi"
<?xml version="1.0"?>
<xsl:stylesheetxmlns:xsl="http://www.w3.org/1999/XSL/Transform"version="2.0"xpath-default-namespace="http://schemas.microsoft.com/wix/2006/wi">
<xsl:outputencoding="utf-8"indent="yes"/>
<xsl:strip-spaceelements="*"/>
<!-- ==========================================================================-->
<!-- start at root and output a result document to make it easier to see -->
<xsl:templatematch="/">
<xsl:variablename="file-name"select="subsequence(reverse(tokenize(document-uri(.), '/')), 1, 1)"/>
<xsl:result-documenthref="{concat('../out/' , $file-name)}">
<xsl:apply-templates/>
</xsl:result-document>
</xsl:template>
<!-- ==========================================================================-->
<!--use the following to copy all of the content of a node-->
<xsl:templatename="copy-content">
<xsl:apply-templatesselect="@* | processing-instruction() | comment() | * | text() | root"/>
</xsl:template>
<!-- ==========================================================================-->
<!--default behaviours for all nodes-->
<xsl:templatematch="processing-instruction() | comment() | * | @* | text()">
<xsl:copy>
<xsl:call-templatename="copy-content"/>
</xsl:copy>
</xsl:template>
<!-- ==========================================================================-->
<!-- pick the parent element where we want to change the order of the children-->
<xsl:templatematch="DirectoryRef">
<xsl:copy>
<xsl:copy-ofselect="@*"/>
<xsl:apply-templatesselect="Component[contains(File/@Source, 'Foo')]"/>
<xsl:apply-templatesselect="Component[not(contains(File/@Source, 'Foo'))]"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>

 
Terry


On Tuesday, June 27, 2017 12:52 PM, "Joseph L. Casale jcasale@xxxxxxxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote:




I have an XML file with the following format:
 
<?xml version="1.0" encoding="utf-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
    <Fragment>
        <DirectoryRef Id="WIXUI_INSTALLDIR">
            <Component Id="cmpD21EA675EFA6996C0BC35D1EBF6D2457" Guid="*">
                <File Id="fil23AD96741A175261995FF2E150D0D117" KeyPath="yes" Source="$(var.SomeVar)\Bar.exe" />
            </Component>
            <Component Id="cmp4CFE705322C198BF47866FF19D0186CC" Guid="*">
                <File Id="fil75F8456D557F48D20C117E74D90A6065" KeyPath="yes" Source="$(var.SomeVar)\Baz.exe" />
            </Component>
            <Component Id="cmp90C9500BC764786BCBA4DD0D0E134F54" Guid="*">
                <File Id="fil2DB44905B644507065B8C7C6B97B2A02" KeyPath="yes" Source="$(var.SomeVar)\Foo.exe" />
            </Component>
        </DirectoryRef>
    </Fragment>
    <Fragment>
        <ComponentGroup Id="ComponentGroup.Service">
            <ComponentRef Id="cmpD21EA675EFA6996C0BC35D1EBF6D2457" />
            <ComponentRef Id="cmp4CFE705322C198BF47866FF19D0186CC" />
            <ComponentRef Id="cmp90C9500BC764786BCBA4DD0D0E134F54" />
        </ComponentGroup>
    </Fragment>
</Wix>
 
I need to apply a transform to re-order the DirectoryRef child elements such
that Component/File[@Source="$(var.SomeVar)\Foo.exe"] appears first.
 
I am not really clear on the semantics of template and copy actions as well
as template specificity. The following omits the outer Component elements
from the File elements;
 
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
                xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns:wix="http://schemas.microsoft.com/wix/2006/wi"
                xmlns:msxsl="urn:schemas-microsoft-com:xslt"
                exclude-result-prefixes="msxsl">
  <xsl:output encoding="UTF-8" indent="yes" method="xml" />
 
 <xsl:template match="@*|node()">
    <xsl:copy>
      <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
  </xsl:template>
 
  <xsl:template match="//wix:DirectoryRef[@Id = 'WIXUI_INSTALLDIR']">
    <xsl:copy>
        <xsl:apply-templates select="@*" />
        <xsl:apply-templates select="//wix:Component/wix:File[@Id = '$(var.SomeVar)\Foo.exe']" />
        <xsl:apply-templates select="//wix:Component/wix:File[@Id != '$(var.SomeVar)\Foo.exe']" />
    </xsl:copy>
  </xsl:template>
</xsl:stylesheet>
 
Any idea what I am missing?


Thanks,
jlc
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