[banshee/stable-1.8] Playlists: Fix parsing when started from root directory (bgo#486543)

[Bertrand Lorentz <blorentz src gnome org>]

commit 413e5421b7ec626d6ab37b69da809d1689111306
Author: Bertrand Lorentz <bertrand lorentz gmail com>
Date:   Sat Jan 22 15:58:18 2011 +0100

    Playlists: Fix parsing when started from root directory (bgo#486543)
    
    Playlist parsers use the current directory as a default base directory.
    This would fail when banshee is started from the root directory, as
    System.Uri rejects "/" as a value.
    We now handle "/" as a special case, setting the base URI to "file:///".

 .../PlaylistFormatBase.cs                          |   10 +++++++++-
 .../Banshee.Playlists.Formats/PlaylistParser.cs    |    8 +++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)
---
diff --git a/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistFormatBase.cs b/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistFormatBase.cs
index fc0ebb1..64b3c3d 100644
--- a/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistFormatBase.cs
+++ b/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistFormatBase.cs
@@ -41,13 +41,21 @@ namespace Banshee.Playlists.Formats
     {
         private Dictionary<string, object> attributes = new Dictionary<string, object>();
         private List<Dictionary<string, object>> elements = new List<Dictionary<string, object>>();
-        private Uri base_uri = new Uri(Environment.CurrentDirectory);
+        private Uri base_uri = null;
         private string title = null;
 
         public PlaylistFormatBase()
         {
             attributes = new Dictionary<string, object>();
             elements = new List<Dictionary<string, object>>();
+
+            if (Environment.CurrentDirectory.Equals ("/")) {
+                // System.Uri doesn't like / as a value
+                base_uri = new Uri ("file:///");
+            } else {
+                base_uri = new Uri (Environment.CurrentDirectory);
+            }
+
         }
 
         public virtual void Load(Stream stream, bool validateHeader)
diff --git a/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistParser.cs b/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistParser.cs
index b081c79..9569ed5 100644
--- a/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistParser.cs
+++ b/src/Core/Banshee.Services/Banshee.Playlists.Formats/PlaylistParser.cs
@@ -50,11 +50,17 @@ namespace Banshee.Playlists.Formats
         };
 
         private List<Dictionary<string, object>> elements;
-        private Uri base_uri = new Uri (Environment.CurrentDirectory);
+        private Uri base_uri = null;
         private string title = null;
 
         public PlaylistParser ()
         {
+            if (Environment.CurrentDirectory.Equals ("/")) {
+                // System.Uri doesn't like / as a value
+                base_uri = new Uri ("file:///");
+            } else {
+                base_uri = new Uri (Environment.CurrentDirectory);
+            }
         }
 
         public bool Parse (SafeUri uri)