Initial Commit

iTechSharp/srcbc/cms/RecipientInformationStore.cs

@@ -0,0 +1,79 @@
+using System;
+using System.Collections;
+
+namespace Org.BouncyCastle.Cms
+{
+	public class RecipientInformationStore
+	{
+		private readonly ArrayList all; //ArrayList[RecipientInformation]
+		private readonly Hashtable table = new Hashtable(); // Hashtable[RecipientID, ArrayList[RecipientInformation]]
+
+		public RecipientInformationStore(
+			ICollection recipientInfos)
+		{
+			foreach (RecipientInformation recipientInformation in recipientInfos)
+			{
+				RecipientID rid = recipientInformation.RecipientID;
+				ArrayList list = (ArrayList) table[rid];
+
+				if (list == null)
+				{
+					table[rid] = list = new ArrayList(1);
+				}
+
+				list.Add(recipientInformation);
+			}
+
+			this.all = new ArrayList(recipientInfos);
+		}
+
+		/**
+		* Return the first RecipientInformation object that matches the
+		* passed in selector. Null if there are no matches.
+		*
+		* @param selector to identify a recipient
+		* @return a single RecipientInformation object. Null if none matches.
+		*/
+		public RecipientInformation GetFirstRecipient(
+			RecipientID selector)
+		{
+			ArrayList list = (ArrayList) table[selector];
+
+			return list == null ? null : (RecipientInformation) list[0];
+		}
+
+		/**
+		* Return the number of recipients in the collection.
+		*
+		* @return number of recipients identified.
+		*/
+		public int Count
+		{
+			get { return all.Count; }
+		}
+
+		/**
+		* Return all recipients in the collection
+		*
+		* @return a collection of recipients.
+		*/
+		public ICollection GetRecipients()
+		{
+			return new ArrayList(all);
+		}
+
+		/**
+		* Return possible empty collection with recipients matching the passed in RecipientID
+		*
+		* @param selector a recipient id to select against.
+		* @return a collection of RecipientInformation objects.
+		*/
+		public ICollection GetRecipients(
+			RecipientID selector)
+		{
+			ArrayList list = (ArrayList) table[selector];
+
+			return list == null ? new ArrayList() : new ArrayList(list);
+		}
+	}
+}