Initial Commit

iTechSharp/srcbc/asn1/cms/AttributeTable.cs

@@ -0,0 +1,155 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+
+namespace Org.BouncyCastle.Asn1.Cms
+{
+    public class AttributeTable
+    {
+        private readonly Hashtable attributes;
+
+        public AttributeTable(
+            Hashtable attrs)
+        {
+            this.attributes = new Hashtable(attrs);
+        }
+
+        public AttributeTable(
+            Asn1EncodableVector v)
+        {
+			this.attributes = new Hashtable(v.Count);
+
+			foreach (Asn1Encodable o in v)
+            {
+                Attribute a = Attribute.GetInstance(o);
+
+				AddAttribute(a);
+            }
+        }
+
+        public AttributeTable(
+            Asn1Set s)
+        {
+			this.attributes = new Hashtable(s.Count);
+
+			for (int i = 0; i != s.Count; i++)
+            {
+                Attribute a = Attribute.GetInstance(s[i]);
+
+                AddAttribute(a);
+            }
+        }
+
+        private void AddAttribute(
+            Attribute a)
+        {
+			DerObjectIdentifier oid = a.AttrType;
+            object obj = attributes[oid];
+
+            if (obj == null)
+            {
+                attributes[oid] = a;
+            }
+            else
+            {
+                ArrayList v;
+
+                if (obj is Attribute)
+                {
+                    v = new ArrayList();
+
+                    v.Add(obj);
+                    v.Add(a);
+                }
+                else
+                {
+                    v = (ArrayList) obj;
+
+                    v.Add(a);
+                }
+
+                attributes[oid] = v;
+            }
+        }
+
+		/// <summary>Return the first attribute matching the given OBJECT IDENTIFIER</summary>
+		public Attribute this[DerObjectIdentifier oid]
+		{
+			get
+			{
+				object obj = attributes[oid];
+
+				if (obj is ArrayList)
+				{
+					return (Attribute)((ArrayList)obj)[0];
+				}
+
+				return (Attribute) obj;
+			}
+		}
+
+		[Obsolete("Use 'object[oid]' syntax instead")]
+        public Attribute Get(
+            DerObjectIdentifier oid)
+        {
+			return this[oid];
+        }
+
+		/**
+        * Return all the attributes matching the OBJECT IDENTIFIER oid. The vector will be
+        * empty if there are no attributes of the required type present.
+        *
+        * @param oid type of attribute required.
+        * @return a vector of all the attributes found of type oid.
+        */
+        public Asn1EncodableVector GetAll(
+            DerObjectIdentifier oid)
+        {
+            Asn1EncodableVector v = new Asn1EncodableVector();
+
+            object obj = attributes[oid];
+
+			if (obj is ArrayList)
+            {
+                foreach (Attribute a in (ArrayList)obj)
+                {
+                    v.Add(a);
+                }
+            }
+            else if (obj != null)
+            {
+                v.Add((Attribute) obj);
+            }
+
+			return v;
+        }
+
+		public Hashtable ToHashtable()
+        {
+            return new Hashtable(attributes);
+        }
+
+		public Asn1EncodableVector ToAsn1EncodableVector()
+        {
+            Asn1EncodableVector v = new Asn1EncodableVector();
+
+			foreach (object obj in attributes.Values)
+            {
+                if (obj is ArrayList)
+                {
+                    foreach (object el in (ArrayList)obj)
+                    {
+                        v.Add(Attribute.GetInstance(el));
+                    }
+                }
+                else
+                {
+                    v.Add(Attribute.GetInstance(obj));
+                }
+            }
+
+			return v;
+        }
+    }
+}