Using Powershell scripts to automate Formatting Config File - visual-studio

Question

I'm really weak in Powershell scripting and hoping someone can put the following pieces together to help me solve the following problem.
Background:
Whenever I update my NuGet packages, they often will touch the app.config and web.config files in my project, thereby, changing the formatting.
This has been reported here without a solution.
Nuget and web.config formatting
http://nuget.codeplex.com/workitem/1511
Goal:
Ultimately, what I'd like to do is have a context menu in Visual Studio (e.g. at the solution level)
that gets a list of all app.config and web.config
and apply the CTRL+K+D to format the config files
(where we have it set to have one attribute per line)
Basically, I'm looking for a modified script that I can hook up to Visual Studio context menu (at solution level) that will read only the relevant config files. OR, alternatively, executed on file save (for relevant config files).
THANKS!
My starting point is from
a) Mark Melville showing how to execute a powershell script from within the context menu in Visual Studio
How do I run a PowerShell script from Visual Studio 2010
b) and Scripts from Phil Haack and David Fowl
http://haacked.com/archive/2011/05/22/an-obsessive-compulsive-guide-to-source-code-formatting.aspx/
https://gist.github.com/davidfowl/984358
For reference, cut and pasted from above links,
Adding context menu to Visual Studio
Add an "External Tool". Go to Tools > External Tools. Add a new one with these settings:
Title: Run with Powershell
Command: powershell.exe
Arguments: -ExecutionPolicy RemoteSigned -File "$(ItemPath)"
Initial Directory: $(ItemDir)
Check "Use Output Window"
If you plan to use scripts that require arguments, check "Prompt For Arguments"
Take note of the position your tool is in the list (1,2, etc...) Click OK.
Now go to Tools > Customize, Commands tab, select Context Menu, and
choose "Project and Solution Context Menus | Item".
Click "Add Command..".
Choose Tools category, and choose "External Command X"
where x is the position your tool was in the list.
Click OK.
Move it to the position you want in the menu, and click "Modify Selection"
to give it a friendly name,
add keyboard shortcuts, etc..
Click Close.
Right click your .ps1 file in the solution explorere and enjoy. (NOTE: I also did this for cmd.exe to run .bat files.)
For reference, cut and pasted from above links,
powershell script to format document
# Print all project items
Recurse-Project -Action {param($item) "`"$($item.ProjectItem.Name)`" is a $($item.Type)" }
# Function to format all documents based on https://gist.github.com/984353
function Format-Document {
param(
[parameter(ValueFromPipelineByPropertyName = $true)]
[string[]]$ProjectName
)
Process {
$ProjectName | %{
Recurse-Project -ProjectName $_ -Action { param($item)
if($item.Type -eq 'Folder' -or !$item.Language) {
return
}
$window = $item.ProjectItem.Open('{7651A701-06E5-11D1-8EBD-00A0C90F26EA}')
if ($window) {
Write-Host "Processing `"$($item.ProjectItem.Name)`""
[System.Threading.Thread]::Sleep(100)
$window.Activate()
$Item.ProjectItem.Document.DTE.ExecuteCommand('Edit.FormatDocument')
$Item.ProjectItem.Document.DTE.ExecuteCommand('Edit.RemoveAndSort')
$window.Close(1)
}
}
}
}
}
function Recurse-Project {
param(
[parameter(ValueFromPipelineByPropertyName = $true)]
[string[]]$ProjectName,
[parameter(Mandatory = $true)]$Action
)
Process {
# Convert project item guid into friendly name
function Get-Type($kind) {
switch($kind) {
'{6BB5F8EE-4483-11D3-8BCF-00C04F8EC28C}' { 'File' }
'{6BB5F8EF-4483-11D3-8BCF-00C04F8EC28C}' { 'Folder' }
default { $kind }
}
}
# Convert language guid to friendly name
function Get-Language($item) {
if(!$item.FileCodeModel) {
return $null
}
$kind = $item.FileCodeModel.Language
switch($kind) {
'{B5E9BD34-6D3E-4B5D-925E-8A43B79820B4}' { 'C#' }
'{B5E9BD33-6D3E-4B5D-925E-8A43B79820B4}' { 'VB' }
default { $kind }
}
}
# Walk over all project items running the action on each
function Recurse-ProjectItems($projectItems, $action) {
$projectItems | %{
$obj = New-Object PSObject -Property #{
ProjectItem = $_
Type = Get-Type $_.Kind
Language = Get-Language $_
}
& $action $obj
if($_.ProjectItems) {
Recurse-ProjectItems $_.ProjectItems $action
}
}
}
if($ProjectName) {
$p = Get-Project $ProjectName
}
else {
$p = Get-Project
}
$p | %{ Recurse-ProjectItems $_.ProjectItems $Action }
}
}
# Statement completion for project names
Register-TabExpansion 'Recurse-Project' #{
ProjectName = { Get-Project -All | Select -ExpandProperty Name }
}