PowerShell Script to Find (and delete) all excluded files in a Visual Studio Solution

DeleteExcludedFiles.ps1

$Solution = "C:\_git\Mercury\Mercury.sln"
[switch]$DeleteFromDisk = $true
$ErrorActionPreference = "Stop"

$solutionDir = Split-Path $Solution | % { (Resolve-Path $_).Path }
cd $solutionDir


$projects = Select-String -Path $Solution -Pattern 'Project.*"(?<file>.*\.csproj)".*' `
    | % { $_.Matches[0].Groups[1].Value } `
    | % { Join-Path $solutionDir $_ } `
    | Where { -not ( (Get-Content $_) -Match "<Project .*Microsoft.NET.Sdk") }

$projects

$excluded = $projects | % {
    $projectDir = Split-Path $_

    #"projectDir: $projectDir"

    $projectFiles = Select-String -Path $_ -Pattern '<(TypeScriptCompile|Compile|None|Content|EmbeddedResource) Include="(.*)"' `
        | % { $_.Matches[0].Groups[2].Value } `
        | % { Join-Path $projectDir $_ } `

    #"Project files"
    #$projectFiles

    $diskFiles = Get-ChildItem -Path $projectDir -Recurse `
        | ? { !$_.PSIsContainer } `
        | % { $_.FullName } `
        | ? { $_ -notmatch "\\obj\\|\\bin\\|\\logs\\|\.user$|\.*proj$|\.*log$|App_Configuration\\|App_Data\\|node_modules\\|lib\\|bower_components\\|Configs\\" } `

    #$diskFiles

    (compare-object -ReferenceObject @($diskFiles) -DifferenceObject @($projectFiles) -PassThru) | Where { $_.SideIndicator -eq '<=' }
} 

Write-Host "Found" $excluded.count "excluded files"

if($DeleteFromDisk)
{
    Write-Host "Deleting excluded files from disk..."
    $excluded | % { Remove-Item -Path $_ -Force -Verbose}
}
else 
{
    Write-Host "DeleteFromDisk was not specified. Listing excluded files only..."
    $excluded
}