001    /**
002     * The contents of this file are subject to the Mozilla Public License Version 1.1
003     * (the "License"); you may not use this file except in compliance with the License.
004     * You may obtain a copy of the License at http://www.mozilla.org/MPL/
005     * Software distributed under the License is distributed on an "AS IS" basis,
006     * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
007     * specific language governing rights and limitations under the License.
008     *
009     * The Original Code is "DataTypeUtil.java".  Description:
010     * "This class is used to provide utility functions for other datatype classes and methods."
011     *
012     * The Initial Developer of the Original Code is University Health Network. Copyright (C)
013     * 2001.  All Rights Reserved.
014     *
015     * Contributor(s): ______________________________________.
016     *
017     * Alternatively, the contents of this file may be used under the terms of the
018     * GNU General Public License (the  ?GPL?), in which case the provisions of the GPL are
019     * applicable instead of those above.  If you wish to allow use of your version of this
020     * file only under the terms of the GPL and not to allow others to use your version
021     * of this file under the MPL, indicate your decision by deleting  the provisions above
022     * and replace  them with the notice and other provisions required by the GPL License.
023     * If you do not delete the provisions above, a recipient may use your version of
024     * this file under either the MPL or the GPL.
025     *
026     */
027    
028    package ca.uhn.hl7v2.model;
029    
030    import java.util.*;
031    
032    /**
033     * This class is used to provide utility functions for other datatype classes and methods.
034     */
035    
036    public class DataTypeUtil {
037        
038        public DataTypeUtil() {
039        }//end zero arg constructor
040        
041        
042        /**
043         * This method will preappend the zeros to the beginning of num such that the total length
044         * equals totalDigitLength. It will also return the string representation of the new number.
045         */
046        public static String preAppendZeroes(int num, int totalDigitLength){
047        /* preappend the zeros to the beginning of num such that the total length
048         equals totalDigitLength. Return the string representation of the new number*/
049            String a = String.valueOf(num);
050            if (a.length() >= totalDigitLength)
051                return a;
052            else {
053                int preAppendAmnt = totalDigitLength - a.length();
054                for (int j=0; j < preAppendAmnt; j++){
055                    a = "0"+a;
056                }//end for
057                return a;
058            }//end else
059        }//end method
060        
061        
062        /**
063         * This method will return a signed four digit integer indicating the local
064         * GMT offset. This is the HL7 Offset format in integer representation.
065         */
066        public static int getLocalGMTOffset(){
067            int offSet;
068            GregorianCalendar currentTime = new GregorianCalendar();
069            int gmtOffSet = currentTime.get(GregorianCalendar.ZONE_OFFSET);
070            String offSetSign;
071            int offSetSignInt;
072            if (gmtOffSet < 0 ){
073                offSetSignInt = -1;
074            }
075            else{
076                offSetSignInt = 1;
077            }
078            //get the absolute value of the gmtOffSet
079            int absGmtOffSet = Math.abs(gmtOffSet);
080            int gmtOffSetHours = absGmtOffSet/(3600*1000);
081            int gmtOffSetMin = (absGmtOffSet / 60000) % (60);
082            //return the offset value HL7 format
083            offSet = ((gmtOffSetHours*100)+gmtOffSetMin) * offSetSignInt;
084            return offSet;        
085        }//end method
086        
087        
088    }//end class
089