How to archive your github repositories in zip files

Today I had to archive the old github repositories. One blog post on the net gives a cool script to do that. Here is just a transpilation from Bash to Powershell.
I just added two lines :

one to remind username and password in order to not be asked on each fetch
one to forget them after the git stuff is done

And change the archive type from tar to zip

So here is the script :

# Takes one parameter: a remote git repository URL.
#
# This is the stuff this script does:
#
# 1. Clones the repository
# 2. Fetches all remote branches
# 3. Compresses the folder
# 4. Deletes the cloned folder.
#
# Your remote repository is left untouched by this script.

# PowerShell version of
#   http://skookum.com/blog/one-git-archive-script-to-rule-them-all/

if(!($args.length -eq 1)) {
  Write-Host -Foreground red "Usage:`n  1- git repository URL"
  Exit 0
}

# Variable definitions
$gitUrl     = $args[0]
$pieces     = $gitUrl.split("/")
$gitName    = $pieces[$pieces.length -1]
$folderName = $gitName.split(".")[0]
$zipName    = "$folderName.gitarchive.$(date +%Y%m%d).zip"

# 
git config --global credential.helper cache

# Clone the repos and go into the folder
git clone --recursive $gitUrl

# go to repository folder
pushd $folderName

# Pull all branches
foreach ($branch in git branch -r | grep -v HEAD | grep -v master) {
  $trimedBranch = $branch.Trim()
  $temp         = $trimedBranch.split("/")
  $branchName   = $temp[$temp.length -1].Trim()
  git branch --track $branchName $trimedBranch
}

#Pull all remote data and tags
git fetch --all
git fetch --tags
git pull --all
git credential-cache exit
git gc

# come back to main folder
popd

# Create an archive of the directory
Add-Type -A System.IO.Compression.FileSystem
[IO.Compression.ZipFile]::CreateFromDirectory("$pwd\$folderName", "$pwd\$zipName")

# Remove the git clone
Remove-Item -Recurse -Force $folderName

Write-Host -Foreground Green "Done!"
Write-Host -Foreground Green "Your archived git repository is named $zipName"

Thanks to Mark Rickert

Written on September 7, 2015