Allow getting the latest version of addins.

Added a flags parameter to GetAvailableAddins and GetAvailableUpdates
which allow getting the latest versions of the add-ins.

1 files changed, 110 insertions, 12 deletions

diff --git a/Mono.Addins.Setup/Mono.Addins.Setup/RepositoryRegistry.cs b/Mono.Addins.Setup/Mono.Addins.Setup/RepositoryRegistry.cs
index 5db9755..d13d72f 100644
--- a/Mono.Addins.Setup/Mono.Addins.Setup/RepositoryRegistry.cs
+++ b/Mono.Addins.Setup/Mono.Addins.Setup/RepositoryRegistry.cs
@@ -32,6 +32,7 @@ using System.Linq;
 using System.IO;
 using System.Collections;
 using Mono.Addins.Setup.ProgressMonitoring;
+using System.Collections.Generic;
 
 namespace Mono.Addins.Setup
 {
@@ -358,7 +359,27 @@ namespace Mono.Addins.Setup
 		/// </remarks>
 		public AddinRepositoryEntry[] GetAvailableUpdates ()
 		{
-			return GetAvailableAddin (null, null, null, true);
+			return GetAvailableAddin (null, null, null, true, RepositorySearchFlags.None);
+		}
+
+		/// <summary>
+		/// Gets a list of available add-in updates.
+		/// </summary>
+		/// <param name="flags">
+		/// Search flags
+		/// </param>
+		/// <returns>
+		/// A list of add-in references.
+		/// </returns>
+		/// <remarks>
+		/// The list is generated by looking at the add-ins currently installed and checking if there is any
+		/// add-in with a newer version number in any of the subscribed repositories. This method uses cached
+		/// information from on-line repositories. Make sure you call UpdateRepository or UpdateAllRepositories
+		/// before using this method to ensure that the latest information is available.
+		/// </remarks>
+		public AddinRepositoryEntry[] GetAvailableUpdates (RepositorySearchFlags flags)
+		{
+			return GetAvailableAddin (null, null, null, true, flags);
 		}
 
 		/// <summary>
@@ -378,20 +399,20 @@ namespace Mono.Addins.Setup
 		/// </remarks>
 		public AddinRepositoryEntry[] GetAvailableUpdates (string repositoryUrl)
 		{
-			return GetAvailableAddin (repositoryUrl, null, null, true);
+			return GetAvailableAddin (repositoryUrl, null, null, true, RepositorySearchFlags.None);
 		}
 		
 #pragma warning disable 1591
 		[Obsolete ("Use GetAvailableAddinUpdates (id) instead")]
 		public AddinRepositoryEntry[] GetAvailableUpdates (string id, string version)
 		{
-			return GetAvailableAddin (null, id, version, true);
+			return GetAvailableAddin (null, id, version, true, RepositorySearchFlags.None);
 		}
 		
 		[Obsolete ("Use GetAvailableAddinUpdates (repositoryUrl, id) instead")]
 		public AddinRepositoryEntry[] GetAvailableUpdates (string repositoryUrl, string id, string version)
 		{
-			return GetAvailableAddin (repositoryUrl, id, version, true);
+			return GetAvailableAddin (repositoryUrl, id, version, true, RepositorySearchFlags.None);
 		}
 #pragma warning restore 1591
 		
@@ -412,7 +433,7 @@ namespace Mono.Addins.Setup
 		/// </remarks>
 		public AddinRepositoryEntry[] GetAvailableAddinUpdates (string id)
 		{
-			return GetAvailableAddin (null, id, null, true);
+			return GetAvailableAddin (null, id, null, true, RepositorySearchFlags.None);
 		}
 		
 		/// <summary>
@@ -435,7 +456,7 @@ namespace Mono.Addins.Setup
 		/// </remarks>
 		public AddinRepositoryEntry[] GetAvailableAddinUpdates (string repositoryUrl, string id)
 		{
-			return GetAvailableAddin (repositoryUrl, id, null, true);
+			return GetAvailableAddin (repositoryUrl, id, null, true, RepositorySearchFlags.None);
 		}
 		
 		/// <summary>
@@ -451,9 +472,28 @@ namespace Mono.Addins.Setup
 		/// </remarks>
 		public AddinRepositoryEntry[] GetAvailableAddins ()
 		{
-			return GetAvailableAddin (null, null, null, false);
+			return GetAvailableAddin (null, null, null, false, RepositorySearchFlags.None);
 		}
-
+		
+		/// <summary>
+		/// Gets a list of all available add-ins
+		/// </summary>
+		/// <returns>
+		/// The available addins.
+		/// </returns>
+		/// <param name='flags'>
+		/// Search flags.
+		/// </param>
+		/// <remarks>
+		/// This method uses cached
+		/// information from on-line repositories. Make sure you call UpdateRepository or UpdateAllRepositories
+		/// before using this method to ensure that the latest information is available.
+		/// </remarks>
+		public AddinRepositoryEntry[] GetAvailableAddins (RepositorySearchFlags flags)
+		{
+			return GetAvailableAddin (null, null, null, false, flags);
+		}
+		
 		/// <summary>
 		/// Gets a list of all available add-ins in a repository
 		/// </summary>
@@ -474,6 +514,28 @@ namespace Mono.Addins.Setup
 		}
 		
 		/// <summary>
+		/// Gets a list of all available add-ins in a repository
+		/// </summary>
+		/// <param name="repositoryUrl">
+		/// A repository URL
+		/// </param>
+		/// <param name='flags'>
+		/// Search flags.
+		/// </param>
+		/// <returns>
+		/// A list of add-ins
+		/// </returns>
+		/// <remarks>
+		/// This method uses cached
+		/// information from on-line repositories. Make sure you call UpdateRepository or UpdateAllRepositories
+		/// before using this method to ensure that the latest information is available.
+		/// </remarks>
+		public AddinRepositoryEntry[] GetAvailableAddins (string repositoryUrl, RepositorySearchFlags flags)
+		{
+			return GetAvailableAddin (repositoryUrl, null, null, false, flags);
+		}
+		
+		/// <summary>
 		/// Checks if an add-in is available to be installed
 		/// </summary>
 		/// <param name="id">
@@ -517,12 +579,12 @@ namespace Mono.Addins.Setup
 		/// </remarks>
 		public AddinRepositoryEntry[] GetAvailableAddin (string repositoryUrl, string id, string version)
 		{
-			return GetAvailableAddin (repositoryUrl, id, version, false);
+			return GetAvailableAddin (repositoryUrl, id, version, false, RepositorySearchFlags.None);
 		}
 		
-		PackageRepositoryEntry[] GetAvailableAddin (string repositoryUrl, string id, string version, bool updates)
+		PackageRepositoryEntry[] GetAvailableAddin (string repositoryUrl, string id, string version, bool updates, RepositorySearchFlags flags)
 		{
-			ArrayList list = new ArrayList ();
+			List<PackageRepositoryEntry> list = new List<PackageRepositoryEntry> ();
 			
 			IEnumerable ee;
 			if (repositoryUrl != null) {
@@ -548,9 +610,32 @@ namespace Mono.Addins.Setup
 					}
 				}
 			}
+			
+			if ((flags & RepositorySearchFlags.LatestVersionsOnly) != 0)
+				FilterOldVersions (list);
+			
 			// Old versions are returned first
 			list.Sort ();
-			return (PackageRepositoryEntry[]) list.ToArray (typeof(PackageRepositoryEntry));
+			return list.ToArray ();
+		}
+		
+		void FilterOldVersions (List<PackageRepositoryEntry> addins)
+		{
+			Dictionary<string,string> versions = new Dictionary<string, string> ();
+			foreach (PackageRepositoryEntry a in addins) {
+				string last;
+				string id, version;
+				Addin.GetIdParts (a.Addin.Id, out id, out version);
+				if (!versions.TryGetValue (id, out last) || Addin.CompareVersions (last, version) > 0)
+					versions [id] = version;
+			}
+			for (int n=0; n<addins.Count; n++) {
+				PackageRepositoryEntry a = addins [n];
+				string id, version;
+				Addin.GetIdParts (a.Addin.Id, out id, out version);
+				if (versions [id] != version)
+					addins.RemoveAt (n--);
+			}
 		}
 		
 		void GetRepositoryTree (string url, ArrayList list)
@@ -573,4 +658,17 @@ namespace Mono.Addins.Setup
 			}
 		}
 	}
+	
+	public enum RepositorySearchFlags
+	{
+		/// <summary>
+		/// No special search options
+		/// </summary>
+		None,
+		
+		/// <summary>
+		/// Only the latest version of every add-in is included in the search
+		/// </summary>
+		LatestVersionsOnly = 1,
+	}
 }