Add tag repos script

scripts/TagRepos.ps1

@@ -0,0 +1,66 @@
+#!/usr/bin/env pwsh
+
+<#
+.SYNOPSIS
+    Tags each repo according to VersionPrefix in version.props of that repo
+.PARAMETER Push
+    Push all updated tags
+.PARAMETER ForceUpdateTag
+    This will call git tag --force
+#>
+[cmdletbinding(SupportsShouldProcess = $true)]
+param(
+    [switch]$Push = $false,
+    [switch]$ForceUpdateTag = $false
+)
+
+Set-StrictMode -Version 2
+$ErrorActionPreference = 'Stop'
+
+Import-Module -Scope Local -Force "$PSScriptRoot/common.psm1"
+
+Assert-Git
+
+$RepoRoot = Resolve-Path "$PSScriptRoot/../"
+
+Get-Submodules $RepoRoot -Shipping | % {
+    Push-Location $_.path | Out-Null
+    try {
+
+        if (-not $_.versionPrefix) {
+            Write-Warning "Could not determine tag version for $(_.path)"
+        }
+        else {
+            $tag = $_.versionPrefix
+            Write-Host "$($_.module) => $tag"
+
+            $gitTagArgs = @()
+            if ($ForceUpdateTag) {
+                $gitTagArgs += '--force'
+            }
+
+            Invoke-Block { & git tag @gitTagArgs $tag }
+
+            if ($Push) {
+                $gitPushArgs = @()
+                if ($WhatIfPreference) {
+                    $gitPushArgs += '--dry-run'
+                }
+                Invoke-Block { & git push --dry-run @gitPushArgs origin "refs/tags/${tag}"  }
+            }
+
+            if ($WhatIfPreference) {
+                Invoke-Block { & git tag -d $tag } | Out-Null
+            }
+        }
+    }
+    catch {
+        Write-Host -ForegroundColor Red "Could not update $_"
+        throw
+    }
+    finally {
+        Pop-Location
+    }
+}
+
+

scripts/common.psm1

@@ -0,0 +1,66 @@
+function Assert-Git {
+    if (!(Get-Command git -ErrorAction Ignore)) {
+        Write-Error 'git is required to execute this script'
+        exit 1
+    }
+}
+
+function Invoke-Block([scriptblock]$cmd) {
+    $cmd | Out-String | Write-Verbose
+    & $cmd
+
+    # Need to check both of these cases for errors as they represent different items
+    # - $?: did the powershell script block throw an error
+    # - $lastexitcode: did a windows command executed by the script block end in error
+    if ((-not $?) -or ($lastexitcode -ne 0)) {
+        Write-Warning $error[0]
+        throw "Command failed to execute: $cmd"
+    }
+}
+
+function Get-Submodules {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$RepoRoot,
+        [switch]$Shipping
+    )
+
+    $moduleConfigFile = Join-Path $RepoRoot ".gitmodules"
+    $submodules = @()
+
+    [xml] $submoduleConfig = Get-Content "$RepoRoot/build/submodules.props"
+    $repos = $submoduleConfig.Project.ItemGroup.Repository | % { $_.Include }
+
+    Get-ChildItem "$RepoRoot/modules/*" -Directory `
+    | ? { (-not $Shipping) -or $($repos -contains $($_.Name)) -or $_.Name -eq 'Templating' } `
+    | % {
+        Push-Location $_ | Out-Null
+        Write-Verbose "Attempting to get submodule info for $_"
+
+        if (Test-Path 'version.props') {
+            [xml] $versionXml = Get-Content 'version.props'
+            $versionPrefix = $versionXml.Project.PropertyGroup.VersionPrefix
+        } else {
+            $versionPrefix = ''
+        }
+
+        try {
+            $data = @{
+                path      = $_
+                module    = $_.Name
+                commit    = $(git rev-parse HEAD)
+                newCommit = $null
+                changed   = $false
+                branch    = $(git config -f $moduleConfigFile --get submodule.modules/$($_.Name).branch )
+                versionPrefix = $versionPrefix
+            }
+
+            $submodules += $data
+        }
+        finally {
+            Pop-Location | Out-Null
+        }
+    }
+
+    return $submodules
+}