Determines the latest ChromeDriver from http://chromedriver.storage.googleapis.com/

Determine-Chromedriver-version.ps1

#==========================================================================================
# Get the latest Chromedriver version number
#==========================================================================================
WriteHeader "Determining Chromedriver version"
$url = "http://chromedriver.storage.googleapis.com/";
$xml = [xml](wget $url);
$chromeDriver_version  = 2.12;

# XML format: <ListBucketResult><Contents><Key>...</Key></Contents></ListBucketResult>
foreach ($item in $xml.ListBucketResult.Contents) 
{ 
    $value = $item.Key; 
    if ([string]::IsNullOrEmpty($value) -eq $false)
    {
        # The format of the value is "2.10/chromedriver-xyz.zip"
        if ($value.Contains("/"))
        {
            $value = $value.Substring(0, $value.IndexOf("/"));
        }

        # Fix ChromeDriver's broken versioning (it has 2.9 as higher than 2.17, when it should be 2.09)
        if ($value.Contains(".") -and $value.Contains(".1") -eq $false)
        {
            $value = $value.Replace(".", ".0");
        }

        # Try to parse the number
        $numberValue = 0;
        [decimal]::TryParse($value, [ref] $numberValue) | Out-Null

        if ($numberValue -gt $chromeDriver_version )
        {
            $chromeDriver_version  = $numberValue;
        }
    }
}

Write-Host "Current ChromeDriver is: $chromeDriver_version ";