Switch-Branch

Switches the Git branch

Script

param([string]$branchName = "", [string]$path = "$PWD")

try {
	if ($branchName -eq "") { $branchName = Read-Host "Enter the branch name to switch to" }

	$stopWatch = [system.diagnostics.stopwatch]::startNew()

	Write-Host "? (1/6) Searching for Git executable...   " -noNewline
	& git --version
	if ($lastExitCode -ne 0) { throw "Can't execute 'git' - make sure Git is installed and available" }

	Write-Host "? (2/6) Checking local repository...      $path"
	if (-not(Test-Path "$path" -pathType container)) { throw "Can't access repo folder: $path" }
	$result = (git -C "$path" status)
	if ($lastExitCode -ne 0) { throw "'git status' in $path failed with exit code $lastExitCode" }
	if ("$result" -notmatch "nothing to commit, working tree clean") { throw "Git repository is NOT clean: $result" }
	$repoDirName = (Get-Item "$path").Name

	Write-Host "? (3/6) Fetching remote updates...        " -noNewline
	& git -C "$path" remote get-url origin
        if ($lastExitCode -ne 0) { throw "'git remote get-url origin' failed with exit code $lastExitCode" }

	& git -C "$path" fetch --all --prune --prune-tags --force
	if ($lastExitCode -ne 0) { throw "'git fetch' failed with exit code $lastExitCode" }

	"? (4/6) Switching to branch '$branchName'..."
	& git -C "$path" checkout --recurse-submodules "$branchName"
	if ($lastExitCode -ne 0) { throw "'git checkout $branchName' failed with exit code $lastExitCode" }

	"? (5/6) Pulling remote updates..."
	& git -C "$path" pull --recurse-submodules
	if ($lastExitCode -ne 0) { throw "'git pull' failed with exit code $lastExitCode" }

	"? (6/6) Updating submodules..."	
	& git -C "$path" submodule update --init --recursive
	if ($lastExitCode -ne 0) { throw "'git submodule update' failed with exit code $lastExitCode" }

	[int]$elapsed = $stopWatch.Elapsed.TotalSeconds
	"? Repo '$repoDirName' switched to '$branchName' branch in $($elapsed)s."
	exit 0 # success
} catch {
	"?? ERROR: $($Error[0]) (script line $($_.InvocationInfo.ScriptLineNumber))"
	exit 1
}

Customize

branchName string

Specifies the Git branch name to switch to

path string

Specifies the file path to the local Git repository