win/C#/Functions/AppcastReader.cs

   1 /*  RssReader.cs $\r
   2         \r
   3            This file is part of the HandBrake source code.\r
   4            Homepage: <http://handbrake.fr>.\r
   5            It may be used under the terms of the GNU General Public License. */\r
   6 \r
   7 using System;\r
   8 using System.Xml;\r
   9 using System.Text.RegularExpressions;\r
  10 \r
  11 namespace Handbrake.Functions\r
  12 {\r
  13     public class AppcastReader\r
  14     {\r
  15         XmlDocument rssDoc;\r
  16         XmlNode nodeRss;\r
  17         XmlNode nodeChannel;\r
  18         XmlNode nodeItem;\r
  19         private Uri hb_description;\r
  20         private string hb_version;\r
  21         private string hb_build;\r
  22         private string hb_file;\r
  23 \r
  24         /// <summary>\r
  25         /// Get the build information from the required appcasts.\r
  26         /// This must be run before calling any of the public return functions.\r
  27         /// </summary>\r
  28         public void getInfo()\r
  29         {\r
  30             // Get the correct Appcast and set input.\r
  31             if (Properties.Settings.Default.hb_build.ToString().EndsWith("1"))\r
  32                 readRss(new XmlTextReader(Properties.Settings.Default.appcast_unstable));\r
  33             else \r
  34                 readRss(new XmlTextReader(Properties.Settings.Default.appcast));\r
  35 \r
  36             string input = nodeItem.InnerXml;\r
  37 \r
  38             // Regular Expressions\r
  39             Match ver = Regex.Match(input, @"sparkle:version=""([0-9]*)\""");\r
  40             Match verShort = Regex.Match(input, @"sparkle:shortVersionString=""([0-9].[0-9].[0-9]*)\""");\r
  41 \r
  42             if (nodeItem != null)\r
  43             {\r
  44                 hb_build = ver.ToString().Replace("sparkle:version=", "").Replace("\"", "");\r
  45                 hb_version = verShort.ToString().Replace("sparkle:shortVersionString=", "").Replace("\"", "");\r
  46                 hb_file = nodeItem["windows"].InnerText;\r
  47                 hb_description = new Uri(nodeItem["sparkle:releaseNotesLink"].InnerText);\r
  48             }\r
  49 \r
  50         }\r
  51 \r
  52         /// <summary>\r
  53         /// Read the RSS file.\r
  54         /// </summary>\r
  55         /// <param name="rssReader"></param>\r
  56         private void readRss(XmlReader rssReader)\r
  57         {\r
  58             rssDoc = new XmlDocument();\r
  59             rssDoc.Load(rssReader);\r
  60 \r
  61             for (int i = 0; i < rssDoc.ChildNodes.Count; i++)\r
  62             {\r
  63                 if (rssDoc.ChildNodes[i].Name == "rss")\r
  64                     nodeRss = rssDoc.ChildNodes[i];\r
  65             }\r
  66 \r
  67             for (int i = 0; i < nodeRss.ChildNodes.Count; i++)\r
  68             {\r
  69                 if (nodeRss.ChildNodes[i].Name == "channel")\r
  70                     nodeChannel = nodeRss.ChildNodes[i];\r
  71             }\r
  72 \r
  73             for (int i = 0; i < nodeChannel.ChildNodes.Count; i++)\r
  74             {\r
  75                 if (nodeChannel.ChildNodes[i].Name == "item")\r
  76                     nodeItem = nodeChannel.ChildNodes[i];\r
  77             }\r
  78         }\r
  79 \r
  80         /// <summary>\r
  81         /// Get Information about an update to HandBrake\r
  82         /// </summary>\r
  83         /// <returns></returns>\r
  84         public System.Uri descriptionUrl()\r
  85         {\r
  86             return hb_description;\r
  87         }\r
  88 \r
  89         /// <summary>\r
  90         /// Get HandBrake's version from the appcast.xml file.\r
  91         /// </summary>\r
  92         /// <returns></returns>\r
  93         public string version()\r
  94         {\r
  95             return hb_version;\r
  96         }\r
  97 \r
  98         /// <summary>\r
  99         /// Get HandBrake's Build from the appcast.xml file.\r
 100         /// </summary>\r
 101         /// <returns></returns>\r
 102         public string build()\r
 103         {\r
 104             return hb_build;\r
 105         }\r
 106 \r
 107         /// <summary>\r
 108         /// Get's the URL for update file.\r
 109         /// </summary>\r
 110         /// <returns></returns>\r
 111         public string downloadFile()\r
 112         {\r
 113             return hb_file;\r
 114         }\r
 115     }\r
 116 }