Podcast のフィードを生成する PowerShell スクリプト

2???????USB ?????? AM/FM ????????????????????????????????? AM ???????????????????????????

??????????????????????????????????????????????????????????????????????????????????????????????????Podcast ??????????????????????Podcast ????????????????????????????????????????? RSS ???????????????? Windows PowerShell ? Podcast ??????????????????????

?????

• ????????????????????
• Windows PowerShell (1.0 or 2.0)
• .NET Framework 3.5 ??
• IIS ??? Web ????
• Podcast ???????????????????????

????(?????)

• PowerShell ? RSS ???????????
  • https://blogs.technet.com/stanabe/archive/2008/01/23/generating-rss-with-powershell.aspx

????Podcast ????????????????????????????e:\radio ?????????????????

?????????????????Podcast ? RSS ????????????????

????????

• RSS ????????? .NET Framework ????????????????? .NET Framework 3.5 ?????????
• ?????????????????????????
  System.ServiceModel.Syndication ???????????????????
• ?????????????$progs ??????????????????
  • ??????????????????????????????????????????????????? RSS ????????????????????????????????(??????????????????????????????????)

[Reflection.Assembly]::LoadWithPartialName("System.ServiceModel.Web") |
   Out-Null
$sss = "System.ServiceModel.Syndication."

$progs = @{
  TitleE = "EIKAIWA"
  TitleJ = "??????"
}, @{
  TitleE = "CHARO"
  TitleJ = "???"
}

$mp3dir = "E:\radio"

?? RSS ??????????System.ServiceModel.Syndication.SyndicationFeed ?????? $feed ???????????????????????????????????????????????$feed ??????????????

0..($progs.count-1) | foreach {
  $feed = new-object ($sss + "SyndicationFeed")
  $feed.LastUpdatedTime = [DateTimeOffset]::Now
  $prog = $progs[$_]["TitleJ"]
  $feed.Title = $prog

?????????????????????????????????

• $mp3dir ????????$prog ??????????????????????????????????????????????
• ??????? System.ServiceModel.Syndication.SyndicationItem ?????????????????????????
  • ??????????????? (extension) ?????????????????????????????????????????????????
  • ????????? (CreationTime) ????????????????
  • System.ServiceModel.Syndication.TextSyndicationContent ???????????????????????????????

  dir ("{0}\*{1}*" -f  $mp3dir, $prog) | sort LastWriteTime -desc | `
  foreach {
    $title = ($_.name.replace($_.extension,""))
    $item = new-object ($sss + "SyndicationItem")
    $item.Title = $title
    $item.PublishDate = $_.CreationTime
    $item.Content = new-object ($sss + "TextSyndicationContent") $title

????? Podcast ?????????

• System.ServiceModel.Syndication.SyndicationLink ?????????????????????????????????? SyndicationItem ???????????????
• Podcast ??????????????????? URL ? $link.Uri ??????????????????????????????????? IIS ?????
  https://localhost/podcast/????? ??????????????

    $link = new-object System.ServiceModel.Syndication.SyndicationLink
    $link.Uri = "https://localhost/podcast/{0}" -f $_.name
    $link.Length = $_.length
    $link.MediaType = "audio/mpeg"
    $link.RelationshipType = "enclosure"
    $item.Links.Add($link)
    $feed.items.add($item)
  }

??? Podcast ?? RSS ????????????????? $feed ????????????????????????????

• ?????RSS 2.0 ???????????
  System.ServiceModel.Syndication.Rss20FeedFormatter ???????????
• ”??????”.xml ????????????????????????????????

  $rssFormatter = new-object ($sss + "Rss20FeedFormatter") $feed
  $rssFile = "{0}\{1}.xml" -f $mp3dir, $progs[$_]["TitleE"]
  $rssWriter = [System.Xml.XmlWriter]::Create($rssFile)
  $rssFormatter.WriteTo($rssWriter);
  $rssWriter.close()
}

????? XML ???????????RSS ??????????

???????? XML ??????? Podcast ?????????????https://.. ???? URL ??????????????????????? IIS ????????????http(s) ?????????????????

• IIS ??????????????????????
• ?????????????????? $link.Uri???? XML ????? <enclosure> ??? URL ?????????????????

???????? XML ????? http(s) ????????????????????????????????

???? RSS ?????????????????????????????????????????????????????????(??????????????????????????????????????)

??????????????????????????? Podcast ????????????

iTunes ??????????? Podcast ? URL ?????????????

Winamp ???????????? > Podcast ?????? > ?????????????????(????????)

???????????????? Podcast ??????????????????????????????????????????????????????????????????????????????

????? Windows PowerShell ? .NET Framework ??????????30?????????? Podcast ????????????????????????????? XML ????????????Windows PowerShell ???????????

? ???????????????????????????????????????????????????????? System.ServiceModel.Syndication ??????????????????????