Organize existing git repositories similar to `git-grab`

[Byron]

When installing ein with cargo install gitoxide, one can run ein tools organize to get a listing of how repositories would be moved if --execute was specified.

It could help to organize a pre-existing loose structure into the one proposed by git-grab, and from there git-grab could be used to maintain structure on any clone.

In any case, I will be using git-grab from now on as it's easier than git clone + ein t organize -e.

[brian6932]

Imo this feature's crucial, you should be able to run it in a flat working dir and just have it effectively work. I wrote a cross-platform PowerShell script for this in case anyone wants to do it:

$rootPath = if ($null -eq $env:GRAB_HOME) { '~/src' } else { $env:GRAB_HOME }
# If you'd prefer not to move your git directories, and instead symlink/junction them, set this to $true (this is much faster):
$symlinkInsteadOfMove = $false
$gitSuffix = '.git'

$null = if (!(Test-Path $rootPath)) { New-Item -ItemType Directory $rootPath }

$block = {
    if ($PSVersionTable.PSVersion.Major -ge 7) {
        $rootPath = $Using:rootPath
        $symlinkInsteadOfMove = $Using:symlinkInsteadOfMove
        $gitSuffix = $Using:gitSuffix
    }

    $url = git -C $_ remote get-url origin
    if ($null -eq $url) { return }

    if ($url -notmatch '\A(?:(?:https|ssh|git)://(?:git@)?(?<domain>[^/]+)/|(?:git@)?(?<domain>[^/:]+)[:/])(?:(?<org>[^/]+)/)?(?<repo>[^/]+)\Z') {
        Write-Host -ForegroundColor Yellow "$url wasn't matched, possibly non-compliant"
        return
    }
    if ($IsWindows) {
        $portIndex = $Matches.domain.LastIndexOf(':')
        if ($portIndex -ne -1) {
            $Matches.domain = $Matches.domain.Substring(0, $portIndex) + ';' + $Matches.domain.Substring($portIndex + 1)
        }
    }
    if ($Matches.repo.EndsWith($gitSuffix)) {
        $Matches.repo = $Matches.repo.Substring(0, $Matches.repo.Length - $gitSuffix.Length)
    }
    Write-Host -ForegroundColor DarkGray "Moving... url: $url | domain: $($Matches.domain) | org: $($Matches.org) | repo: $($Matches.repo)"

    $path = "$rootPath/$($Matches.domain)$(if ($null -ne $Matches.org) { '/' + $Matches.org })/$(if ($Matches.domain.StartsWith('gist.')) { $_.Name } else { $Matches.repo })"

    $i = 2
    $suffix = "-$i"
    if (Test-Path $path) {
        while (Test-Path "$path$suffix") {
            $suffix = '-' + ++$i
        }
        $path += $suffix
    }

    $null = if ($symlinkInsteadOfMove) {
        New-Item -ItemType $(if ($IsWindows) { 'Junction' } else { 'SymbolicLink' }) -Target $_.FullName -Path $path
    } else {
        New-Item -ItemType Directory $path
        Move-Item -Force "$_/*" $path
    }
}

if ($PSVersionTable.PSVersion.Major -ge 7) {
    Get-ChildItem | ForEach-Object -Parallel $block -ThrottleLimit ([Environment]::ProcessorCount)
} else {
    Get-ChildItem | ForEach-Object $block
}