PowerShell script: Use dotnet CLI to create a Windows 32-bit C# class library solution

Dotnet-Create-Win32-Classlib-Solution.ps1

# Dotnet-Create-Win32-Classlib-Solution.ps1
# Uses dotnet CLI to create a Windows 32-bit C# class library solution

function not-exist { -not (Test-Path $args) }
Set-Alias !exist not-exist -Option "Constant, AllScope"
Set-Alias exist Test-Path -Option "Constant, AllScope"

# TODO: Configure
$classlib = '32-bit'             # project subdirectory (I.E. ~\src\32-bit)
$repoName = 'Windows.Classlib'   # C# project namespace
$repoPath = 'D:\Repos\username'  # your project repository root directory

$repository = Join-Path -Path $repoPath -ChildPath $repoName
$sln = $repoName + '.sln'
$srcDir = 'src'

if (not-exist $repository) { mkdir $repository > $null }
Set-Location $repository 

if (not-exist $srcDir) { mkdir $srcDir > $null }
Set-Location $srcDir

if (not-exist $sln) { dotnet new sln -n $repoName }

if (not-exist $classlib) {
    dotnet new classlib --no-restore `
        --target-framework-override net462 `
        -n $repoName `
        -o $classlib
}

$csproj = Join-Path -Path $classlib -ChildPath $($repoName + '.csproj') -Resolve

# Append <Platforms>x86</Platforms> to .csproj to select 32-bit architecture
$xmlDoc = New-Object System.Xml.XmlDocument
$xmlDoc.Load($csproj)

$platforms = $xmlDoc.CreateElement('Platforms')
$null = $platforms.AppendChild($xmlDoc.CreateTextNode('x86'))
$null = $xmlDoc.Project.PropertyGroup.AppendChild($platforms)

$xmlSettings = New-Object System.Xml.XmlWriterSettings
$xmlSettings.Indent = $true
$xmlSettings.OmitXmlDeclaration = $true

$xmlWriter = [System.Xml.XmlWriter]::Create($csproj, $xmlSettings)
$xmlDoc.Save($xmlWriter)
$xmlWriter.Close()

# Configure postSolution section in .sln file for x86 project
dotnet sln $sln add $csproj

# Build solution
dotnet build $sln