XML Transforms with Msbuild

xml-tranform.targets

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

  <PropertyGroup>

    <!-- Plug into the Publish pipeline  -->
    <OnAfterPipelineCollectFilesPhase>
      XmlTransform;
      $(OnAfterPipelineCollectFilesPhase);
    </OnAfterPipelineCollectFilesPhase>

    <XmlTransformDependsOn>
        XMLTransformInit;
        XMLTransformPrepareTemp;
        XMLTransformExecute;
        XMLTransformAddForPackaging;
    </XmlTransformDependsOn>

    <XmlTransformTempPath>$(IntermediateOutputPath)XmlTransform\</XmlTransformTempPath>

  </PropertyGroup>

  <ItemGroup>
    <!-- Enable Build Action "XmlTransform" in Visual Studio  -->
    <AvailableItemName Include="XmlTransform"/>
  </ItemGroup>

  <Target Name="XmlTransform" DependsOnTargets="$(XmlTransformDependsOn)">
  </Target>

  <Target Name="XMLTransformInit">

    <Message Text="Preparing files for XMLTransform: @(XmlTransform)" Importance="high"/>

    <ItemGroup>
      <!-- Generate paths to transform files and output files  -->
      <XmlTransformInfo Include="@(XmlTransform)">
        <TransformFilePath>%(RelativeDir)%(Filename).$(Configuration)%(Extension)</TransformFilePath>
        <TempFileDir>$(XmlTransformTempPath)transformed\%(RelativeDir)</TempFileDir>
        <TempFilePath>$(XmlTransformTempPath)transformed\%(RelativeDir)%(Filename)%(Extension)</TempFilePath>
        <RelativePath>%(RelativeDir)%(Filename)%(Extension)</RelativePath>
      </XmlTransformInfo>
    </ItemGroup>

    <!-- Generate error if any of the transform files for the current configuration is missing  -->
    <Error Text="XML transformation file %(XmlTransformInfo.TransformFilePath) does not exist." 
          Condition="!Exists('%(XmlTransformInfo.TransformFilePath)')" />

  </Target>

  <Target Name="XMLTransformPrepareTemp">

    <PropertyGroup>
      <PrepareXMLTransformsOutputDirectories>@(_WebConfigsToTransformOuputs->'%(RootDir)%(Directory)')</PrepareXMLTransformsOutputDirectories>
    </PropertyGroup>

    <ItemGroup>
      <_WebConfigsToTransformOuputsDirectories Include="$(_WebConfigsToTransformOuputsDirectories)" />
    </ItemGroup>

    <RemoveDir Directories="$(XmlTransformTempPath)"/>
    <MakeDir Directories="%(XmlTransformInfo.TempFileDir)"/>

  </Target>

  <Target Name="XMLTransformExecute">

    <!-- Perform actual transform -->
    <TransformXml 
        Source="@(XmlTransformInfo)" 
        Transform="%(TransformFilePath)" 
        Destination="%(TempFilePath)" />

  </Target>

  <Target Name="XMLTransformAddForPackaging">

    <ItemGroup>
      <TransformedFilesToInclude Include="%(XmlTransformInfo.TempFilePath)">
        <DestinationRelativePath>%(XmlTransformInfo.RelativePath)</DestinationRelativePath>
      </TransformedFilesToInclude>
      <FilesForPackagingFromProject Include="@(TransformedFilesToInclude->'%(FullPath)')" KeepMetadata="DestinationRelativePath"/>
    </ItemGroup>

  </Target>

</Project>