mpicker0 · May 30, 2013 18:38 · May 30, 2013
diff --git a/Create-WebConfigTransform.ps1 b/Create-WebConfigTransform.ps1
@@ -0,0 +1,74 @@
+<#
+.SYNOPSIS
+Create a configuration transformation
+
+.DESCRIPTION
+This script runs an ASP.NET configuration transformation, given a source
+configuration and transformation file.  MSBuild.exe is assumed to be in
+the path, and Visual Studio 2012 should be installed.  Modify the path to
+Microsoft.Web.Publishing.Tasks.dll if a different version of Visual Studio
+is installed.
+
+.PARAMETER SourceFile
+The source file to use for transformations
+
+.PARAMETER TransformFile
+The transformations to apply to the source file
+
+.PARAMETER OutputFile
+Where to write the resulting output
+
+.EXAMPLE
+Create-WebConfigTransform -SourceFile C:\path\to\project\Web.config -TransformFile C:\path\to\project\Web.Debug.config -OutputFile c:\temp\transformed.xml
+
+.LINK
+http://msdn.microsoft.com/en-us/library/dd465326.aspx
+#>
+param(
+    [Parameter(Mandatory=$true)]
+    [ValidateScript({Test-Path $_})]
+    [string]$SourceFile,
+
+    [Parameter(Mandatory=$true)]
+    [ValidateScript({Test-Path $_})]
+    [string]$TransformFile,
+
+    [Parameter(Mandatory=$true)]
+    [string]$OutputFile
+)
+
+# set up output filenames
+$WorkDir = Join-Path ${env:temp} "work-${PID}"
+$SourceWork = Join-Path $WorkDir (Split-Path $SourceFile -Leaf)
+$TransformWork = Join-Path $WorkDir (Split-Path $TransformFile -Leaf)
+$OutputWork = Join-Path $WorkDir (Split-Path $OutputFile -Leaf)
+
+# create a working directory and copy files into place
+New-Item -Path ${WorkDir} -Type Directory
+Copy-Item $SourceFile $WorkDir
+Copy-Item $TransformFile $WorkDir
+
+# write the project build file
+$BuildXml = @"
+<Project ToolsVersion="4.0" DefaultTargets="TransformWebConfig" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <UsingTask TaskName="TransformXml"
+             AssemblyFile="`$(MSBuildExtensionsPath)\Microsoft\VisualStudio\v11.0\Web\Microsoft.Web.Publishing.Tasks.dll"/>
+  <Target Name="TransformWebConfig">
+    <TransformXml Source="${SourceWork}"
+                  Transform="${TransformWork}"
+                  Destination="${OutputWork}"
+                  StackTrace="true" />
+  </Target>
+</Project>
+"@
+$BuildXmlWork = Join-Path $WorkDir "build.xml"
+$BuildXml | Out-File $BuildXmlWork
+
+# call msbuild
+& MSBuild.exe $BuildXmlWork
+
+# copy the output to the desired location
+Copy-Item $OutputWork $OutputFile
+
+# clean up
+Remove-Item $WorkDir -Recurse -Force