How to copy files with MSBuild to the same folder but with different extensions?

Question

Let's say I have an ItemGroup defined as follows:

  <ItemGroup>
<ReactorFile Include="MyExecutable\bin\x86\Release\MyExecutable.exe"/>
<ReactorFile Include="MyLibrary\bin\x86\Release\MyLibrary*.dll"/>
</ItemGroup>

Defined a PropertyGroup:

<PropertyGroup>
<ReactorUnObfuscatedFileExt>.unobfuscated</ReactorUnObfuscatedFileExt>
</PropertyGroup>

I also have defined a Target in another file:

<Target Name="CopyUnprotectedFiles">
  <!-- Copy unobfuscated file to  "unobfuscated file".unobfuscated -->
<Copy
    SourceFiles="@(ReactorFile)"
    DestinationFiles="@(ReactorFile -> '%(Filename)%(Extension)$(ReactorUnObfuscatedFileExt)"
    SkipUnchangedFiles="false"
/>
</Target>

Unfortunately due to my lack of experience in MSBuild I did it wrong. Could somebody please correct it for me?

Answer 1

I have figured it out:

Adding a %(RelativeDir) Item Metadata was the solution.

Maybe other will use it as an example. Corrected fragment is:

<Target Name="CopyUnprotectedFiles">
  <!-- Copy unobfuscated file to  "unobfuscated file".unobfuscated -->
<Copy
    SourceFiles="@(ReactorFile)"
    DestinationFiles="@(ReactorFile -> '%(RelativeDir)%(Filename)%(Extension)$(ReactorUnObfuscatedFileExt)')"
    SkipUnchangedFiles="false"
/>
</Target>