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From wesmck...@apache.org
Subject svn commit: rev 6591 - incubator/directory/snickers/trunk/ber/src/java/org/apache/snickers/ber
Date Sun, 08 Feb 2004 14:50:17 GMT
Author: wesmckean
Date: Sun Feb  8 06:50:17 2004
New Revision: 6591

Added:
   incubator/directory/snickers/trunk/ber/src/java/org/apache/snickers/ber/BERDecoder.java
Log:
The start of our BER decoder.

Added: incubator/directory/snickers/trunk/ber/src/java/org/apache/snickers/ber/BERDecoder.java
==============================================================================
--- (empty file)
+++ incubator/directory/snickers/trunk/ber/src/java/org/apache/snickers/ber/BERDecoder.java
Sun Feb  8 06:50:17 2004
@@ -0,0 +1,120 @@
+/*
+
+ ============================================================================
+                   The Apache Software License, Version 1.1
+ ============================================================================
+
+ Copyright (C) 1999-2002 The Apache Software Foundation. All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without modifica-
+ tion, are permitted provided that the following conditions are met:
+
+ 1. Redistributions of  source code must  retain the above copyright  notice,
+    this list of conditions and the following disclaimer.
+
+ 2. Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
+
+ 3. The end-user documentation included with the redistribution, if any, must
+    include  the following  acknowledgment:  "This product includes  software
+    developed  by the  Apache Software Foundation  (http://www.apache.org/)."
+    Alternately, this  acknowledgment may  appear in the software itself,  if
+    and wherever such third-party acknowledgments normally appear.
+
+ 4. The names "Eve Directory Server", "Apache Directory Project", "Apache Eve" 
+    and "Apache Software Foundation"  must not be used to endorse or promote
+    products derived  from this  software without  prior written
+    permission. For written permission, please contact apache@apache.org.
+
+ 5. Products  derived from this software may not  be called "Apache", nor may
+    "Apache" appear  in their name,  without prior written permission  of the
+    Apache Software Foundation.
+
+ THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+ INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ FITNESS  FOR A PARTICULAR  PURPOSE ARE  DISCLAIMED.  IN NO  EVENT SHALL  THE
+ APACHE SOFTWARE  FOUNDATION  OR ITS CONTRIBUTORS  BE LIABLE FOR  ANY DIRECT,
+ INDIRECT, INCIDENTAL, SPECIAL,  EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLU-
+ DING, BUT NOT LIMITED TO, PROCUREMENT  OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ OF USE, DATA, OR  PROFITS; OR BUSINESS  INTERRUPTION)  HOWEVER CAUSED AND ON
+ ANY  THEORY OF LIABILITY,  WHETHER  IN CONTRACT,  STRICT LIABILITY,  OR TORT
+ (INCLUDING  NEGLIGENCE OR  OTHERWISE) ARISING IN  ANY WAY OUT OF THE  USE OF
+ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+ This software  consists of voluntary contributions made  by many individuals
+ on  behalf of the Apache Software  Foundation. For more  information on the
+ Apache Software Foundation, please see <http://www.apache.org/>.
+
+*/
+
+package org.apache.snickers.ber;
+
+import org.apache.snickers.asn.ASNDecoder;
+import org.apache.snickers.asn.BitString;
+
+/**
+ * Implements the basic BER decoder used by the ASN
+ * compiler package.  The decoder is primarily responsible
+ * for converting streams of bytes into ASN.1 primatives.
+ * 
+ * @author <a href="mailto:wesmckean@apache.org">Wes McKean</a>
+ * @author $Author$
+ * @version $Rev$ 
+ */
+public class BERDecoder implements ASNDecoder {
+
+	/**
+	 * The basic decoder constructor 
+	 */
+	public BERDecoder() {
+		super();
+	}
+
+	/* (non-Javadoc)
+	 * @see org.apache.snickers.asn.ASNDecoder#decodeBoolean(int[])
+	 */
+    public Boolean decodeBoolean( int[] value ) {
+        Boolean result = null;
+        
+        if( value[0] > (byte)0 )
+            result = new Boolean(true);
+        else
+            result = new Boolean( false );
+            
+        return result;
+    }
+
+	/* (non-Javadoc)
+	 * @see org.apache.snickers.asn.ASNDecoder#decodeInteger(int[])
+	 */
+    public Integer decodeInteger( int[] value ) {
+        int result = 0;
+        
+        for( int i = 0; i < value.length; i++ ) {
+            result = ( result << 8 ) | (int)value[i];
+        }
+
+        return new Integer( result );
+    }
+
+	/* (non-Javadoc)
+	 * @see org.apache.snickers.asn.ASNDecoder#decodeBitString(int[])
+	 */
+    public BitString decodeBitString( int[] value ) {
+        BitString result = new BitString( value, value.length );
+        return result;
+    }
+    
+	/* (non-Javadoc)
+	 * @see org.apache.snickers.asn.ASNDecoder#decodeOctetString(int[])
+	 */
+    public String decodeOctetString( int[] value ) {
+        byte[] bytes = new byte[value.length];
+        
+        for( int i = 0; i < value.length; i++ )
+            bytes[i] = (byte)value[i];
+            
+        return new String( bytes );
+    }
+}

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