Replace tokens in config transformations. Used for prepping branched deployments.

ReplaceTokens.ps1

# Submit with a single parameter of a comma delimted list of key=value pairs.
# Caveat: no escaping is performed, so the script will go awry if the value contains a ',' and the script is not modified

param ( 
    [parameter(Mandatory=$true)] [string]$raw 
)

$filter = '*.setParameters.xml'
$lookup = ConvertFrom-StringData ($raw.split(",") | out-string)

try {
    $working = (Get-Location)

    Write-Host Working: $working
	Write-Host Filter: $filter
	Write-Host ($lookup | Out-String)

    $filesUpdated = 0
    foreach($fileName in [System.IO.Directory]::GetFiles($working, $filter, "AllDirectories"))
    {
        $file = New-Object System.IO.FileInfo ($fileName)

        $global:updated = 0
		$regex = [regex]($lookup.Keys -join '|')
		$callback = {
            $global:updated++
            $lookup[$args[0].Value] 
        }

		$content = [System.IO.File]::ReadAllText($file.FullName)
		$content = $regex.Replace($content, $callback)

        if ($global:updated -gt 0)
        {
            $filesUpdated++
		    Write-Host Processed: $file.Name [$global:updated tokens found]
		    Set-Content -Path $file.FullName -Value $content
        }
	}

    if ($filesUpdated -eq 0)
    {
        Write-Host No tokens were found.
    }
    else
    {
        Write-Host Done.
    }
} Catch {
    Write-Host $("##teamcity[message text='{0}' status='ERROR']" -f $_.Exception.Message.Replace("]", "|]"))
    [System.Environment]::Exit(1)
}