Update-Version.ps1

Param(
  [string]$pathToSearch = $env:BUILD_SOURCESDIRECTORY,
  [string]$buildNumber = $env:BUILD_BUILDNUMBER
)

try
{
   $buildPattern = "\d+\.\d+\.\d+\.\d+"

    if ($buildNumber -match $buildPattern -ne $true) {
        Write-Host "Could not extract a version from [$buildNumber] using pattern [$buildPattern]"
        exit 1
    } else {
        $extractedBuildNumber = $Matches[0]
        Write-Host "Using version $extractedBuildNumber"

		# Update Assembly Infos
		$searchFilter = "AssemblyInfo.*"
        gci -Path $pathToSearch -Filter $searchFilter -Recurse | %{
            Write-Host "  -> Changing $($_.FullName)"

            # remove the read-only bit on the file
            sp $_.FullName IsReadOnly $false

            # run the regex replace
            (gc $_.FullName -Encoding UTF8) | % { $_ -replace $buildPattern, $extractedBuildNumber } | sc $_.FullName -Encoding UTF8
        } | out-null


		# Update Package.appxmanifest
		$searchFilter = "Package.appxmanifest"
        gci -Path $pathToSearch -Filter $searchFilter -Recurse | %{
            Write-Host "  -> Changing $($_.FullName)"

            # remove the read-only bit on the file
            sp $_.FullName IsReadOnly $false

            # run the regex replace
            (gc $_.FullName -Encoding UTF8) | % { $_ -replace  "Version=`"$buildPattern`"", "Version=`"$extractedBuildNumber`"" } | sc $_.FullName -Encoding UTF8
        } | out-null

		# Update Nuspecs
		$searchFilter = "*.nuspec"
        gci -Path $pathToSearch -Filter $searchFilter -Recurse | %{
            Write-Host "  -> Changing $($_.FullName)"

            # remove the read-only bit on the file
            sp $_.FullName IsReadOnly $false

            # run the regex replace
            (gc $_.FullName -Encoding UTF8) | % { $_ -replace  "<version>$buildPattern", "<version>$extractedBuildNumber" } | sc $_.FullName -Encoding UTF8
        } | out-null


        Write-Host "Done!"
    }
}
catch {
    Write-Host $_
    exit 1
}