Run command with environment variables in PowerShell

with-env.ps1

function With-Env {
    $ori = @{}
    Try {
        $i = 0

        # Loading .env files
        # if (Test-Path $args[0]) {
        #     foreach ($line in (Get-Content $args[0])) {
        #         if ($line -Match '^\s*$' -Or $line -Match '^#') {
        #             continue
        #         }

        #         $key, $val = $line.Split("=")
        #         $ori[$key] = if (Test-Path Env:\$key) { (Get-Item Env:\$key).Value } else { "" }
        #         New-Item -Name $key -Value $val -ItemType Variable -Path Env: -Force > $null
        #         Write-Output "$key = $val"
        #     }

        #     $i++
        # }

        while (1) {
            if ($i -ge $args.length) {
                exit
            }

            if (!($args[$i] -Match '^[^ ]+=[^ ]+$')) {
                break
            }

            $key, $val = $args[$i] -split "=", 2
            $ori[$key] = if (Test-Path Env:\$key) { (Get-Item Env:\$key).Value } else { "" }
            New-Item -Name $key -Value $val -ItemType Variable -Path Env: -Force > $null

            Write-Output "WithEnv: $key => $val"

            $i++
        }


        Invoke-Expression ($args[$i..$args.length] -Join " ")
    }
    Finally {
        foreach ($key in $ori.Keys) {
            New-Item -Name $key -Value $ori.Item($key) -ItemType Variable -Path Env: -Force > $null
        }
    }
}