1 files changed, 24 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.BuildTasks/FilterItems.cs b/src/DotNetOpenAuth.BuildTasks/FilterItems.cs
new file mode 100644
index 0000000..97631c6
--- /dev/null
+++ b/src/DotNetOpenAuth.BuildTasks/FilterItems.cs
@@ -0,0 +1,24 @@
+namespace DotNetOpenAuth.BuildTasks {
+	using System;
+	using System.Collections.Generic;
+	using System.Linq;
+	using System.Text;
+	using Microsoft.Build.Utilities;
+	using Microsoft.Build.Framework;
+
+	public class FilterItems : Task {
+		[Required]
+		public ITaskItem[] InputItems { get; set; }
+
+		[Required]
+		public ITaskItem[] StartsWithAny { get; set; }
+
+		[Output]
+		public ITaskItem[] FilteredItems { get; set; }
+
+		public override bool Execute() {
+			FilteredItems = InputItems.Where(item => StartsWithAny.Any(filter => item.ItemSpec.StartsWith(filter.ItemSpec, StringComparison.OrdinalIgnoreCase))).ToArray();
+			return true;
+		}
+	}
+}