Adds submodules looking at entries from .gitmodules

SyncSubmodules.psm1

function Get-Submodules {
    function lookup($key, $defaultValue = "") {        
        $value = git config --file $gitmodules --get "$key" 2>&1 
        if($LASTEXITCODE -ne 0) { $defaultValue } else { $value }
    }

    function all {
        (git config --file $gitmodules --list) -split "\n"
    }

    if (!(Test-Path $gitmodules)) {
        echo "No gitmodules file found in $root"
        exit -1
    }   


    all | 
    foreach { $_ -split "submodule.\S+.path\="  | select -Index 1 } |
    select -Unique |
    foreach {[pscustomobject]@{ 
                Path = lookup "submodule.$_.path"; 
                Url = lookup "submodule.$_.url";  
                Branch = lookup "submodule.$_.branch" "master";
            }} |
    where { $_.Path -ne "" }
}

function Sync-Submodules {
    $gitmodules = ".gitmodules"
    $root = $pwd

    $modules = Get-Submodules

    "Submodules found:"
    $modules    

    "`n`nCloning:"

    foreach ($sub in $modules) {     
        cd $root
        $path = $sub.Path
        if(Test-Path $path) {
            "$($path) already exists, ignoring."
        } else {
            git submodule add $sub.Url $sub.Path 2>&1 | foreach { "$_" }
            git submodule set-branch --branch $sub.Branch $path 2>&1 | foreach { "$_" }
            cd $path
            git submodule checkout $sub.Branch 2>&1 | foreach { "$_" }
        }
    }

    "Done."
}

Usage:

cd to path with .gitmodules
Sync-Submodules

Thank you very much for your powershell script!

I have a small problem with my submodules, because one of my submodule name contains a dot (".").
As a result, the foreach with the integrated --split parameter with "." fails in line 18.

Do you have possible a solution for this problem?

Can you try replacing it with:

 foreach { $_ -split "submodule.\S+.path\="  | select -Index 1 }

Thank you very much, this Regex works perfectly!

UPDATE:
I added missing backslashes, because dots "\." must be escaped:

foreach { $_ -split "submodule\.\S+\.path\=" | select -Index 1 } |