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
028package ca.uhn.hl7v2.model;
029
030import java.util.*;
031
032/**
033 * This class is used to provide utility functions for other datatype classes and methods.
034 */
035
036public 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        int offSetSignInt;
071        if (gmtOffSet < 0 ){
072            offSetSignInt = -1;
073        }
074        else{
075            offSetSignInt = 1;
076        }
077        //get the absolute value of the gmtOffSet
078        int absGmtOffSet = Math.abs(gmtOffSet);
079        int gmtOffSetHours = absGmtOffSet/(3600*1000);
080        int gmtOffSetMin = (absGmtOffSet / 60000) % (60);
081        //return the offset value HL7 format
082        offSet = ((gmtOffSetHours*100)+gmtOffSetMin) * offSetSignInt;
083        return offSet;        
084    }//end method
085    
086    
087}//end class
088