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1   /**
2    * The contents of this file are subject to the Mozilla Public License Version 1.1
3    * (the "License"); you may not use this file except in compliance with the License.
4    * You may obtain a copy of the License at http://www.mozilla.org/MPL/
5    * Software distributed under the License is distributed on an "AS IS" basis,
6    * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
7    * specific language governing rights and limitations under the License.
8    *
9    * The Original Code is "DataTypeUtil.java".  Description:
10   * "This class is used to provide utility functions for other datatype classes and methods."
11   *
12   * The Initial Developer of the Original Code is University Health Network. Copyright (C)
13   * 2001.  All Rights Reserved.
14   *
15   * Contributor(s): ______________________________________.
16   *
17   * Alternatively, the contents of this file may be used under the terms of the
18   * GNU General Public License (the "GPL"), in which case the provisions of the GPL are
19   * applicable instead of those above.  If you wish to allow use of your version of this
20   * file only under the terms of the GPL and not to allow others to use your version
21   * of this file under the MPL, indicate your decision by deleting  the provisions above
22   * and replace  them with the notice and other provisions required by the GPL License.
23   * If you do not delete the provisions above, a recipient may use your version of
24   * this file under either the MPL or the GPL.
25   *
26   */
27  
28  package ca.uhn.hl7v2.model;
29  
30  import java.util.*;
31  
32  /**
33   * This class is used to provide utility functions for other datatype classes and methods.
34   */
35  
36  public class DataTypeUtil {
37      
38      public DataTypeUtil() {
39      }//end zero arg constructor
40      
41      
42      /**
43       * This method will preappend the zeros to the beginning of num such that the total length
44       * equals totalDigitLength. It will also return the string representation of the new number.
45       */
46      public static String preAppendZeroes(int num, int totalDigitLength){
47      /* preappend the zeros to the beginning of num such that the total length
48       equals totalDigitLength. Return the string representation of the new number*/
49          String a = String.valueOf(num);
50          if (a.length() >= totalDigitLength)
51              return a;
52          else {
53              int preAppendAmnt = totalDigitLength - a.length();
54              for (int j=0; j < preAppendAmnt; j++){
55                  a = "0"+a;
56              }//end for
57              return a;
58          }//end else
59      }//end method
60      
61      
62      /**
63       * This method will return a signed four digit integer indicating the local
64       * GMT offset. This is the HL7 Offset format in integer representation.
65       */
66      public static int getLocalGMTOffset(){
67          int offSet;
68          GregorianCalendar currentTime = new GregorianCalendar();
69          int gmtOffSet = currentTime.get(GregorianCalendar.ZONE_OFFSET);
70          int offSetSignInt;
71          if (gmtOffSet < 0 ){
72              offSetSignInt = -1;
73          }
74          else{
75              offSetSignInt = 1;
76          }
77          //get the absolute value of the gmtOffSet
78          int absGmtOffSet = Math.abs(gmtOffSet);
79          int gmtOffSetHours = absGmtOffSet/(3600*1000);
80          int gmtOffSetMin = (absGmtOffSet / 60000) % (60);
81          //return the offset value HL7 format
82          offSet = ((gmtOffSetHours*100)+gmtOffSetMin) * offSetSignInt;
83          return offSet;        
84      }//end method
85      
86      
87  }//end class
88