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/SMBDate.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;
+
+import java.util.Calendar;
+import java.util.Date;
+
+/**
+ * SMB date/time class.
+ */
+public final class SMBDate extends Date
+{
+    private static final long serialVersionUID = 3258407335553806902L;
+
+    // Constants
+    //
+    // Bit masks for extracting the date/time fields from an SMB encoded date/time.
+    //
+
+    private static final int Days = 0x001F;
+    private static final int Month = 0x01E0;
+    private static final int Year = 0xFE00;
+
+    private static final int TwoSeconds = 0x001F;
+    private static final int Minutes = 0x07E0;
+    private static final int Hours = 0xF800;
+
+    /**
+     * Construct the SMBDate using a seconds since 1-Jan-1970 00:00:00 value.
+     * 
+     * @param secs Seconds since base date/time 1970 value
+     */
+
+    public SMBDate(int secs)
+    {
+        super((long) (secs & 0x7FFFFFFF));
+    }
+
+    /**
+     * Construct the SMBDate using the SMB encoded date/time values.
+     * 
+     * @param dat SMB encoded date value
+     * @param tim SMB encoded time value
+     */
+
+    public SMBDate(int dat, int tim)
+    {
+
+        // Extract the date from the SMB encoded value
+
+        int days = dat & Days;
+        int months = (dat & Month) >> 5;
+        int year = (dat & Year) >> 9;
+
+        // Extract the time from the SMB encoded value
+
+        int secs = (tim & TwoSeconds) * 2;
+        int mins = (tim & Minutes) >> 5;
+        int hours = (tim & Hours) >> 11;
+
+        // Use a calendar object to create the date/time value
+
+        Calendar cal = Calendar.getInstance();
+        cal.clear();
+        cal.set(year + 1980, months - 1, days, hours, mins, secs);
+
+        // Initialize this dates raw value
+
+        this.setTime(cal.getTime().getTime());
+    }
+
+    /**
+     * Create a new SMBDate using the long time value.
+     * 
+     * @param dattim long
+     */
+    public SMBDate(long dattim)
+    {
+        super(dattim);
+    }
+
+    /**
+     * Return this date as an SMB encoded date.
+     * 
+     * @return SMB encoded date value.
+     */
+
+    public final int asSMBDate()
+    {
+
+        // Use a calendar object to get the day, month and year values
+
+        Calendar cal = Calendar.getInstance();
+        cal.setTime(this);
+
+        // Build the SMB encoded date value
+
+        int smbDate = cal.get(Calendar.DAY_OF_MONTH);
+        smbDate += (cal.get(Calendar.MONTH) + 1) << 5;
+        smbDate += (cal.get(Calendar.YEAR) - 1980) << 9;
+
+        // Return the SMB encoded date value
+
+        return smbDate;
+    }
+
+    /**
+     * Return this time as an SMB encoded time.
+     * 
+     * @return SMB encoded time value.
+     */
+
+    public final int asSMBTime()
+    {
+
+        // Use a calendar object to get the hour, minutes and seconds values
+
+        Calendar cal = Calendar.getInstance();
+        cal.setTime(this);
+
+        // Build the SMB encoded time value
+
+        int smbTime = cal.get(Calendar.SECOND) / 2;
+        smbTime += cal.get(Calendar.MINUTE) << 5;
+        smbTime += cal.get(Calendar.HOUR_OF_DAY) << 11;
+
+        // Return the SMB encoded time value
+
+        return smbTime;
+    }
+}