resolve darcs stupidity

[org.ibex.core.git] / src / org / bouncycastle / asn1 / DERBoolean.java

diff --git a/src/org/bouncycastle/asn1/DERBoolean.java b/src/org/bouncycastle/asn1/DERBoolean.java
index 4fce317..0cb2eb4 100644 (file)
--- a/src/org/bouncycastle/asn1/DERBoolean.java
+++ b/src/org/bouncycastle/asn1/DERBoolean.java
@@ -7,6 +7,60 @@ public class DERBoolean
 {
     byte         value;
 
+        public static final DERBoolean FALSE = new DERBoolean(false);
+        public static final DERBoolean TRUE  = new DERBoolean(true);
+
+    /**
+     * return a boolean from the passed in object.
+     *
+     * @exception IllegalArgumentException if the object cannot be converted.
+     */
+    public static DERBoolean getInstance(
+        Object  obj)
+    {
+        if (obj == null || obj instanceof DERBoolean)
+        {
+            return (DERBoolean)obj;
+        }
+
+        if (obj instanceof ASN1OctetString)
+        {
+            return new DERBoolean(((ASN1OctetString)obj).getOctets());
+        }
+
+        if (obj instanceof ASN1TaggedObject)
+        {
+            return getInstance(((ASN1TaggedObject)obj).getObject());
+        }
+
+        throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
+    }
+
+    /**
+     * return a DERBoolean from the passed in boolean.
+     */
+    public static DERBoolean getInstance(
+        boolean  value)
+    {
+        return (value ? TRUE : FALSE);
+    }
+
+    /**
+     * return a Boolean from a tagged object.
+     *
+     * @param obj the tagged object holding the object we want
+     * @param explicit true if the object is meant to be explicitly
+     *              tagged false otherwise.
+     * @exception IllegalArgumentException if the tagged object cannot
+     *               be converted.
+     */
+    public static DERBoolean getInstance(
+        ASN1TaggedObject obj,
+        boolean          explicit)
+    {
+        return getInstance(obj.getObject());
+    }
+    
     public DERBoolean(
         byte[]       value)
     {
@@ -34,4 +88,16 @@ public class DERBoolean
 
         out.writeEncoded(BOOLEAN, bytes);
     }
+    
+    public boolean equals(
+        Object  o)
+    {
+        if ((o == null) || !(o instanceof DERBoolean))
+        {
+            return false;
+        }
+
+        return (value == ((DERBoolean)o).value);
+    }
+
 }