Download file with progress

Thanks to Jason Niver on MSDN Blogs (Downloading files from the internet in PowerShell (with progress)), yep, we can download a file from the web and display progress (bytes and percentage).

 

Function Get-Webfile ($url)
{
$dest=(Join-Path $pwd.Path $url.SubString($url.LastIndexOf('/')))
Write-Host "Downloading $url`n" -ForegroundColor DarkGreen;
$uri=New-Object "System.Uri" "$url"
$request=[System.Net.HttpWebRequest]::Create($uri)
$request.set_Timeout(5000)
$response=$request.GetResponse()
$totalLength=[System.Math]::Floor($response.get_ContentLength()/1024)
$length=$response.get_ContentLength()
$responseStream=$response.GetResponseStream()
$destStream=New-Object -TypeName System.IO.FileStream -ArgumentList $dest, Create
$buffer=New-Object byte[] 10KB
$count=$responseStream.Read($buffer,0,$buffer.length)
$downloadedBytes=$count
while ($count -gt 0)
{
[System.Console]::CursorLeft=0
[System.Console]::Write("Downloaded {0}K of {1}K ({2}%)", [System.Math]::Floor($downloadedBytes/1024), $totalLength, [System.Math]::Round(($downloadedBytes / $length) * 100,0))
$destStream.Write($buffer, 0, $count)
$count=$responseStream.Read($buffer,0,$buffer.length)
$downloadedBytes+=$count
}
Write-Host ""
Write-Host "`nDownload of `"$dest`" finished." -ForegroundColor DarkGreen;
$destStream.Flush()
$destStream.Close()
$destStream.Dispose()
$responseStream.Dispose()
}

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