[vcpkg ci] Update formatting CI (#12314)

* stage checking formatting

this means that the port CI won't run if the formatting failed

* fix invalid names

* add formatting of manifests

* fix dependsOn name

* fix a thing

* CRs

* oops, typo

1 files changed, 51 insertions, 0 deletions

diff --git a/scripts/azure-pipelines/windows/Check-CxxFormatting.ps1 b/scripts/azure-pipelines/windows/Check-CxxFormatting.ps1
new file mode 100644
index 000000000..7f300164f
--- /dev/null
+++ b/scripts/azure-pipelines/windows/Check-CxxFormatting.ps1
@@ -0,0 +1,51 @@
+[CmdletBinding()]
+Param(
+    [Parameter(Mandatory=$True)]
+    [string]$Root,
+    [Parameter()]
+    [switch]$IgnoreErrors # allows one to just format
+)
+
+$clangFormat = 'C:\Program Files\LLVM\bin\clang-format.exe'
+if (-not (Test-Path $clangFormat))
+{
+    Write-Error "clang-format not found; is it installed in the CI machines?"
+    throw
+}
+
+$toolsrc = Get-Item "$Root/toolsrc"
+Push-Location $toolsrc
+
+try
+{
+    $files = Get-ChildItem -Recurse -LiteralPath "$toolsrc/src" -Filter '*.cpp'
+    $files += Get-ChildItem -Recurse -LiteralPath "$toolsrc/include/vcpkg" -Filter '*.h'
+    $files += Get-ChildItem -Recurse -LiteralPath "$toolsrc/include/vcpkg-test" -Filter '*.h'
+    $files += Get-Item "$toolsrc/include/pch.h"
+    $fileNames = $files.FullName
+
+    & $clangFormat -style=file -i @fileNames
+
+    $changedFiles = & "$PSScriptRoot/Get-ChangedFiles.ps1" -Directory $toolsrc
+    if (-not $IgnoreErrors -and $null -ne $changedFiles)
+    {
+        $msg = @(
+            "",
+            "The formatting of the C++ files didn't match our expectation.",
+            "If your build fails here, you need to format the following files with:"
+        )
+        $msg += "    $(& $clangFormat -version)"
+        $msg += "    $changedFiles"
+        $msg += ""
+
+        $msg += "clang-format should produce the following diff:"
+        $msg += git diff $toolsrc
+
+        Write-Error ($msg -join "`n")
+        throw
+    }
+}
+finally
+{
+    Pop-Location
+}