Moving to root below branch label

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@2005 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/filesys/smb/server/NTParameterPacker.java

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+/*
+ * Copyright (C) 2005 Alfresco, Inc.
+ *
+ * Licensed under the Mozilla Public License version 1.1 
+ * with a permitted attribution clause. You may obtain a
+ * copy of the License at
+ *
+ *   http://www.alfresco.org/legal/license.txt
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific
+ * language governing permissions and limitations under the
+ * License.
+ */
+package org.alfresco.filesys.smb.server;
+
+import org.alfresco.filesys.util.DataPacker;
+
+/**
+ * NT Dialect Parameter Packer Class
+ * <p>
+ * The NT SMB dialect uses parameters that are not always word/longword aligned.
+ */
+class NTParameterPacker
+{
+
+    // Buffer and current offset
+
+    private byte[] m_buf;
+    private int m_pos;
+
+    /**
+     * Class constructor
+     * 
+     * @param buf byte[]
+     */
+    public NTParameterPacker(byte[] buf)
+    {
+        m_buf = buf;
+        m_pos = SMBSrvPacket.PARAMWORDS;
+    }
+
+    /**
+     * Class constructor
+     * 
+     * @param buf byte[]
+     * @param pos int
+     */
+    public NTParameterPacker(byte[] buf, int pos)
+    {
+        m_buf = buf;
+        m_pos = pos;
+    }
+
+    /**
+     * Pack a byte (8 bit) value
+     * 
+     * @param val byte
+     */
+    public final void packByte(byte val)
+    {
+        m_buf[m_pos++] = val;
+    }
+
+    /**
+     * Pack a byte (8 bit) value
+     * 
+     * @param val int
+     */
+    public final void packByte(int val)
+    {
+        m_buf[m_pos++] = (byte) val;
+    }
+
+    /**
+     * Pack a word (16 bit) value
+     * 
+     * @param val int
+     */
+    public final void packWord(int val)
+    {
+        DataPacker.putIntelShort(val, m_buf, m_pos);
+        m_pos += 2;
+    }
+
+    /**
+     * Pack an integer (32 bit) value
+     * 
+     * @param val int
+     */
+    public final void packInt(int val)
+    {
+        DataPacker.putIntelInt(val, m_buf, m_pos);
+        m_pos += 4;
+    }
+
+    /**
+     * Pack a long (64 bit) value
+     * 
+     * @param val long
+     */
+    public final void packLong(long val)
+    {
+        DataPacker.putIntelLong(val, m_buf, m_pos);
+        m_pos += 8;
+    }
+
+    /**
+     * Return the current buffer position
+     * 
+     * @return int
+     */
+    public final int getPosition()
+    {
+        return m_pos;
+    }
+
+    /**
+     * Return the buffer
+     * 
+     * @return byte[]
+     */
+    public final byte[] getBuffer()
+    {
+        return m_buf;
+    }
+
+    /**
+     * Unpack a byte value
+     * 
+     * @return int
+     */
+    public final int unpackByte()
+    {
+        return (int) m_buf[m_pos++];
+    }
+
+    /**
+     * Unpack a word (16 bit) value
+     * 
+     * @return int
+     */
+    public final int unpackWord()
+    {
+        int val = DataPacker.getIntelShort(m_buf, m_pos);
+        m_pos += 2;
+        return val;
+    }
+
+    /**
+     * Unpack an integer (32 bit) value
+     * 
+     * @return int
+     */
+    public final int unpackInt()
+    {
+        int val = DataPacker.getIntelInt(m_buf, m_pos);
+        m_pos += 4;
+        return val;
+    }
+
+    /**
+     * Unpack a long (64 bit) value
+     * 
+     * @return int
+     */
+    public final long unpackLong()
+    {
+        long val = DataPacker.getIntelLong(m_buf, m_pos);
+        m_pos += 8;
+        return val;
+    }
+
+    /**
+     * Reset the parameter packer/reader to use the new buffer/offset
+     * 
+     * @param buf byte[]
+     * @param off int
+     */
+    public final void reset(byte[] buf, int pos)
+    {
+        m_buf = buf;
+        m_pos = pos;
+    }
+}