Channel9Downloader.ps1
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<#PSScriptInfo
.VERSION 1.0 .AUTHOR jongalloway@gmail.com .GUID da220b4e-e889-42dc-85cd-91e0f91a965e #> <# .DESCRIPTION Downloads videos from Channel 9 event RSS feeds. #> # --- settings --- $feedUrl = "http://s.ch9.ms/Events/dotNetConf/2017/RSS/" $mediaType = "mp4high" $overwrite = $false $destinationDirectory = join-path ([Environment]::GetFolderPath("MyDocuments")) "dotNetConf-2017-Video" # --- locals --- $webClient = New-Object System.Net.WebClient # --- functions --- function PromptForInput ($prompt, $default) { $selection = read-host "$prompt`r`n(default: $default)" if ($selection) {$selection} else {$default} } function DownloadEntries { param ([string]$feedUrl) $feed = [xml]$webClient.DownloadString($feedUrl) $progress = 0 $pagepercent = 0 $entries = $feed.rss.channel.item.Length $invalidChars = [System.IO.Path]::GetInvalidFileNameChars() $feed.rss.channel.item | foreach { $url = New-Object System.Uri($_.enclosure.url) $name = $_.title $extension = [System.IO.Path]::GetExtension($url.Segments[-1]) $fileName = $name + $extension $invalidchars | foreach { $filename = $filename.Replace($_, ' ') } $saveFileName = join-path $destinationDirectory $fileName $tempFilename = $saveFilename + ".tmp" $filename if ((-not $overwrite) -and (Test-Path -path $saveFileName)) { write-progress -activity "$fileName already downloaded" -status "$pagepercent% ($progress / $entries) complete" -percentcomplete $pagepercent } else { write-progress -activity "Downloading $fileName" -status "$pagepercent% ($progress / $entries) complete" -percentcomplete $pagepercent $webClient.DownloadFile($url, $tempFilename) rename-item $tempFilename $saveFileName } $pagepercent = [Math]::floor((++$progress)/$entries*100) } } # --- do the actual work --- [string]$feedUrl = PromptForInput "Enter feed URL" $feedUrl [string]$mediaType = PromptForInput "Enter media type`r`n(options:Wmv,WmvHigh,mp4,mp4high,zune,mp3)" $mediaType $feedUrl += $mediaType [string]$destinationDirectory = PromptForInput "Enter destination directory" $destinationDirectory # if dest dir doesn't exist, create it if (!(Test-Path -path $destinationDirectory)) { New-Item $destinationDirectory -type directory } DownloadEntries $feedUrl |