PowerShell/docs/switch-branch.md
2023-10-31 11:05:01 +01:00

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*switch-branch.ps1*
================
This PowerShell script switches to another branch in a Git repository (including submodules).
Parameters
----------
```powershell
PS> ./switch-branch.ps1 [[-branchName] <String>] [[-repoDir] <String>] [<CommonParameters>]
-branchName <String>
Specifies the branch name
Required? false
Position? 1
Default value
Accept pipeline input? false
Accept wildcard characters? false
-repoDir <String>
Specifies the path to the local Git repository
Required? false
Position? 2
Default value "$PWD"
Accept pipeline input? false
Accept wildcard characters? false
[<CommonParameters>]
This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction,
WarningVariable, OutBuffer, PipelineVariable, and OutVariable.
```
Example
-------
```powershell
PS> ./switch-branch main C:\MyRepo
(1/6) Searching for Git executable... git version 2.42.0.windows.1
(2/6) Checking local repository...
(3/6) Fetching updates...
(4/6) Switching to branch 'main'...
(5/6) Pulling updates...
(6/6) Updating submodules...
Switched repo 📂MyRepo to branch 'main' in 22 sec
```
Notes
-----
Author: Markus Fleschutz | License: CC0
Related Links
-------------
https://github.com/fleschutz/PowerShell
Script Content
--------------
```powershell
<#
.SYNOPSIS
Switches the Git branch
.DESCRIPTION
This PowerShell script switches to another branch in a Git repository (including submodules).
.PARAMETER branchName
Specifies the branch name
.PARAMETER repoDir
Specifies the path to the local Git repository
.EXAMPLE
PS> ./switch-branch main C:\MyRepo
⏳ (1/6) Searching for Git executable... git version 2.42.0.windows.1
⏳ (2/6) Checking local repository...
⏳ (3/6) Fetching updates...
⏳ (4/6) Switching to branch 'main'...
⏳ (5/6) Pulling updates...
⏳ (6/6) Updating submodules...
✔️ Switched repo 📂MyRepo to branch 'main' in 22 sec
.LINK
https://github.com/fleschutz/PowerShell
.NOTES
Author: Markus Fleschutz | License: CC0
#>
param([string]$branchName = "", [string]$repoDir = "$PWD")
try {
if ($branchName -eq "") { $branchName = Read-Host "Enter the branch name to switch to" }
if ($repoDir -eq "") { $repoDir = Read-Host "Enter the path to the local Git repository" }
$StopWatch = [system.diagnostics.stopwatch]::startNew()
Write-Host "⏳ (1/6) Searching for Git executable... " -noNewline
& git --version
if ($lastExitCode -ne "0") { throw "Can't execute 'git' - make sure Git is installed and available" }
Write-Host "⏳ (2/6) Checking local repository..."
$repoDir = Resolve-Path "$repoDir"
if (-not(Test-Path "$repoDir" -pathType container)) { throw "Can't access directory: $repoDir" }
$Result = (git status)
if ($lastExitCode -ne "0") { throw "'git status' in $repoDir failed with exit code $lastExitCode" }
if ("$Result" -notmatch "nothing to commit, working tree clean") { throw "Git repository is NOT clean: $Result" }
$repoDirName = (Get-Item "$repoDir").Name
"⏳ (3/6) Fetching latest updates..."
& git -C "$repoDir" fetch --all --prune --prune-tags --force
if ($lastExitCode -ne "0") { throw "'git fetch' failed with exit code $lastExitCode" }
"⏳ (4/6) Switching to branch '$branchName'..."
& git -C "$repoDir" checkout --recurse-submodules "$branchName"
if ($lastExitCode -ne "0") { throw "'git checkout $branchName' failed with exit code $lastExitCode" }
"⏳ (5/6) Pulling updates..."
& git -C "$repoDir" pull --recurse-submodules
if ($lastExitCode -ne "0") { throw "'git pull' failed with exit code $lastExitCode" }
"⏳ (6/6) Updating submodules..."
& git -C "$repoDir" submodule update --init --recursive
if ($lastExitCode -ne "0") { throw "'git submodule update' failed with exit code $lastExitCode" }
[int]$Elapsed = $StopWatch.Elapsed.TotalSeconds
"✔️ Switched repo 📂$repoDirName to branch '$branchName' in $Elapsed sec"
exit 0 # success
} catch {
"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
exit 1
}
```
*(generated by convert-ps2md.ps1 using the comment-based help of switch-branch.ps1 as of 10/19/2023 08:11:43)*