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.Collections.Generic;\r
   9 using System.ComponentModel;\r
  10 using System.Data;\r
  11 using System.Drawing;\r
  12 using System.Text;\r
  13 using System.Windows.Forms;\r
  14 using System.IO;\r
  15 using System.Xml;\r
  16 using System.Text.RegularExpressions;\r
  17 \r
  18 namespace Handbrake.Functions\r
  19 {\r
  20     class AppcastReader\r
  21     {\r
  22         XmlTextReader rssReader;\r
  23         XmlDocument rssDoc;\r
  24         XmlNode nodeRss;\r
  25         XmlNode nodeChannel;\r
  26         XmlNode nodeItem;\r
  27         private string hb_versionInfo;\r
  28         private string hb_version;\r
  29         private string hb_build;\r
  30         private string hb_file;\r
  31 \r
  32         // Rss Reading Code.\r
  33         private void readRss(XmlTextReader rssReader)\r
  34         {\r
  35             rssDoc = new XmlDocument();\r
  36             rssDoc.Load(rssReader);\r
  37 \r
  38             for (int i = 0; i < rssDoc.ChildNodes.Count; i++)\r
  39             {\r
  40                 if (rssDoc.ChildNodes[i].Name == "rss")\r
  41                     nodeRss = rssDoc.ChildNodes[i];\r
  42             }\r
  43 \r
  44             for (int i = 0; i < nodeRss.ChildNodes.Count; i++)\r
  45             {\r
  46                 if (nodeRss.ChildNodes[i].Name == "channel")\r
  47                     nodeChannel = nodeRss.ChildNodes[i];\r
  48             }\r
  49 \r
  50             for (int i = 0; i < nodeChannel.ChildNodes.Count; i++)\r
  51             {\r
  52                 if (nodeChannel.ChildNodes[i].Name == "item")\r
  53                     nodeItem = nodeChannel.ChildNodes[i];\r
  54             }\r
  55         }\r
  56 \r
  57 \r
  58         // Get's the information required out the RSS file.\r
  59         private void getInfo()\r
  60         {\r
  61             Match ver;\r
  62             int unstable_build = 0;\r
  63             string input;\r
  64 \r
  65             // Check the stable appcast and get the build nuber\r
  66             rssReader = new XmlTextReader(Properties.Settings.Default.appcast);\r
  67             readRss(rssReader);\r
  68             input = nodeItem.InnerXml;\r
  69             ver = Regex.Match(input, @"sparkle:version=""([0-9]*)\""");\r
  70             int stable_build = int.Parse(ver.ToString().Replace("sparkle:version=", "").Replace("\"", ""));\r
  71 \r
  72             // If the pref to enable unstable appcast checking is enabled    OR\r
  73             // this is a snapshot release, \r
  74             // then check the unstable appcast.\r
  75             if (Properties.Settings.Default.checkSnapshot == "Checked" || Properties.Settings.Default.hb_build.ToString().EndsWith("1"))\r
  76             {\r
  77                 // Get the stable build\r
  78                 rssReader = new XmlTextReader(Properties.Settings.Default.appcast_unstable);\r
  79                 readRss(rssReader);\r
  80                 input = nodeItem.InnerXml;\r
  81                 ver = Regex.Match(input, @"sparkle:version=""([0-9]*)\""");\r
  82                 unstable_build = int.Parse(ver.ToString().Replace("sparkle:version=", "").Replace("\"", ""));\r
  83             }\r
  84 \r
  85             if (stable_build >= unstable_build)\r
  86                 rssReader = new XmlTextReader(Properties.Settings.Default.appcast);\r
  87             else\r
  88                 rssReader = new XmlTextReader(Properties.Settings.Default.appcast_unstable);\r
  89 \r
  90             // Get the Version Information\r
  91             hb_versionInfo = nodeItem["description"].InnerText;\r
  92 \r
  93             // Get the version\r
  94             string inputNode = nodeItem.InnerXml;\r
  95             ver = Regex.Match(inputNode, @"sparkle:shortVersionString=""([0-9].[0-9].[0-9]*)\""");\r
  96             hb_version = ver.ToString().Replace("sparkle:shortVersionString=", "").Replace("\"", "");\r
  97 \r
  98             ver = Regex.Match(inputNode, @"sparkle:version=""([0-9]*)\""");\r
  99             hb_build = ver.ToString().Replace("sparkle:version=", "").Replace("\"", "");\r
 100 \r
 101             // Get the update file\r
 102             hb_file = nodeItem["windows"].InnerText;\r
 103         }\r
 104 \r
 105         /// <summary>\r
 106         /// Get Information about an update to HandBrake\r
 107         /// </summary>\r
 108         /// <returns></returns>\r
 109         public string versionInfo()\r
 110         {\r
 111             getInfo();\r
 112             return hb_versionInfo;\r
 113         }\r
 114 \r
 115         /// <summary>\r
 116         /// Get HandBrake's version from the appcast.xml file.\r
 117         /// </summary>\r
 118         /// <returns></returns>\r
 119         public string version()\r
 120         {\r
 121             getInfo();\r
 122             return hb_version;\r
 123         }\r
 124 \r
 125         /// <summary>\r
 126         /// Get HandBrake's Build from the appcast.xml file.\r
 127         /// </summary>\r
 128         /// <returns></returns>\r
 129         public string build()\r
 130         {\r
 131             getInfo();\r
 132             return hb_build;\r
 133         }\r
 134 \r
 135         /// <summary>\r
 136         /// Get's the URL for update file.\r
 137         /// </summary>\r
 138         /// <returns></returns>\r
 139         public string downloadFile()\r
 140         {\r
 141             getInfo();\r
 142             return hb_file;\r
 143         }\r
 144     }\r
 145 }