Adding the missing pieces to the Standalone StyleCop script

Rather than post the whole ~200 lines, just the salient bits so that the original can be tidied up (but without obscuring everything with obsessive error handling). Start by giving it parameters like

	<#
	.SYNOPSIS
	Stand-alone stylecop runner.
	.DESCRIPTION
	Runs StyleCop over a project or a solution
	.NOTES
	File Name : Run-StyleCop.ps1
	Requires : PowerShell Version 2.0
	.PARAMETER FilesToScan
	Project or Solution file
	.PARAMETER StyleCopFolder
	To override the heuristic looking in $env:ProgramFiles for the latest version
	e.g. for StyleCop in source control
	.PARAMETER OnlyBuildIntegrated
	Only scan project files which include <Import Project="something with 'stylecop' in it" />
	#>
	param (
	[Parameter(Mandatory = $true)] [string] $FilesToScan,
	[string] $StyleCopFolder,
	[switch] $OnlyBuildIntegrated)
	Find StyleCop in the default install location by
	if (-not $StyleCopFolder) {
	$styleCopFolder = (dir "$($env:programFiles)*\stylecop*" | Sort-object LastWriteTimeUtc | Select-Object -Last 1).FullName
	}

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Find StyleCop in the default install location by

if (-not $StyleCopFolder) {
    $styleCopFolder =  (dir "$($env:programFiles)*\stylecop*" | Sort-object LastWriteTimeUtc | Select-Object -Last 1).FullName
}

Get the list of projects by either just the project, or using a regex on the project file from here: http://bytes.com/topic/c-sharp/answers/483959-enumerate-projects-solution

	if ($FilesToScan -like "*.csproj") {
	$projectList = ,$FilesToScan
	} else {
	if ($FilesToScan -like "*.sln") {
	$solutionDir = Split-Path $FilesToScan
	$matchProjectNameRegex =
	'^Project\("(?<PROJECTTYPEGUID>.*)"\)\s*=\s* "(?<PROJECTNAME>.*)"\s*,\s*"(?<PROJECTRELATIVEPATH>.*)"\s*,\s*"(?<PROJECTGUID>.*)"$'
	# or we could filter on project guid being {FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}
	$projectList = @(Get-Content $FilesToScan | % {
	$matches = $null; $_ -match $matchProjectNameRegex | Out-Null; $matches.PROJECTRELATIVEPATH } | ? {
	$_ -like "*.csproj" } | % { Join-Path $solutionDir $_ } )
	} else {
	Write-Error "$FilesToScan isn't a solution file or a C# project"
	}
	}
	# Check if required for a StyleCop target
	if ($OnlyBuildIntegrated) {
	$projectList = @($projectList | ? {
	[xml]$content = Get-Content $_
	$imports = @($content.Project.Import)
	$flagged = (@($imports | % { $_.Project } | ? { $_ -like "*stylecop*" })).Length
	if ($flagged -eq 0) { Write-Host "Skipping project $_" }
	($flagged -gt 0)
	})}

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Find a Settings.StyleCop file by looking at the project folder and up, defaulting to one in the StyleCop folder; and then scan the C# files of interest by

	[xml]$content = Get-Content $projectFile
	# All C# files
	$cs = @($content.Project.ItemGroup | % { $_.Compile } | ? {$_})
	# Filter excluded files; get absolute paths
	$projectDir = Split-Path $_
	$cs = @($cs | ? { -not (($cs[0].ExcludeFromStyleCop -like "true") -or ($cs[0].ExcludeFromSourceAnalysis -like "true"))
	} | % { Join-Path $projectDir $_.Include })
	$cs | % { $console.Core.Environment.AddSourceCode($codeproject, $_, $null) | Out-Null }

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and customise the output file as

	$name = (Split-Path $projectFile -Leaf).Replace(".csproj", ".StyleCop.xml")
	$outputXml = Join-Path (Get-Location) $name

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