Renderers/Favicons.cs

   1 //
   2 // Favicons.cs: Finds Epiphany favicons.
   3 //
   4 // Original Author:
   5 //     Jonas Heylen <jonas.heylen@pandora.be>
   6 //
   7 // Butched by Jon Trowbridge <trow@ximian.com>
   8 //
   9
  10
  11 using System;
  12 using System.IO;
  13 using System.Xml;
  14 using System.Collections;
  15
  16 namespace Beagle {
  17
  18         public class Favicons  {
  19
  20                 static XmlDocument         favicondoc;
  21
  22                 static DateTime lastRefresh;
  23                 static DateTime timestamp;
  24
  25                 static private string GetPath (string fileName)
  26                 {
  27                         string home_dir = Environment.GetEnvironmentVariable ("HOME");
  28                         string ephy_dir = Path.Combine (home_dir, ".gnome2/epiphany");
  29                         return Path.Combine (ephy_dir, fileName);
  30                 }
  31
  32                 static private bool Refresh ()
  33                 {
  34                         if ((DateTime.Now - lastRefresh).TotalMinutes < 10)
  35                                 return true;
  36
  37                         try {
  38                                 string path = GetPath ("ephy-favicon-cache.xml");
  39
  40                                 if (! File.Exists (path))
  41                                         return false;
  42
  43                                 DateTime lastWrite = File.GetLastWriteTime (path);
  44                                 if (timestamp >= lastWrite)
  45                                         return true;
  46
  47                                 timestamp = lastWrite;
  48
  49                                 favicondoc = new XmlDocument ();
  50                                 favicondoc.Load (path);
  51
  52                                 return true;
  53                         } catch {
  54                                 return false;
  55                         }
  56                 }
  57
  58                 static public string GetIconPath (string url)
  59                 {
  60                         Refresh ();
  61
  62                         if (favicondoc == null)
  63                                 return null;
  64
  65                         int index = url.IndexOf ("/", 7);
  66                         if (index > -1)
  67                            url = url.Substring (0, index);
  68
  69                         string xpath = "descendant::node[starts-with(child::property[1]/child::text(), '" + url + "')]";
  70                         XmlNode fav_node = favicondoc.SelectSingleNode (xpath);
  71
  72                         if (fav_node != null) {
  73                                 xpath = "child::property[position()=2]";
  74                                 XmlNode favicon = fav_node.SelectSingleNode (xpath);
  75                                 string path = GetPath ("favicon_cache");
  76                                 return Path.Combine (path, favicon.InnerText);
  77                         }
  78
  79                         return null;
  80                 }
  81         }
  82 }
  83
  84