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; } } }
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