001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019/**
020 * Implements the CFML Function datepart
021 */
022package lucee.runtime.functions.dateTime;
023
024import lucee.runtime.PageContext;
025import lucee.runtime.exp.ExpressionException;
026import lucee.runtime.ext.function.Function;
027import lucee.runtime.type.dt.DateTime;
028
029public final class DatePart implements Function {
030        
031        private static final long serialVersionUID = -4203375459570986511L;
032
033        public static double call(PageContext pc , String datepart, DateTime date) throws ExpressionException {
034                return call(pc, datepart, date, null);
035        }
036        
037        public static double call(PageContext pc , String datepart, DateTime date,String strTimezone) throws ExpressionException {
038                datepart=datepart.toLowerCase();
039                char first=datepart.length()==1?datepart.charAt(0):(char)0;
040                
041                if(datepart.equals("yyyy")) return Year.call(pc,date,strTimezone);
042                else if(datepart.equals("ww")) return Week.call(pc,date,strTimezone);
043                else if(first=='w') return DayOfWeek.call(pc,date,strTimezone);
044                else if(first=='q') return Quarter.call(pc,date,strTimezone);
045                else if(first=='m') return Month.call(pc,date,strTimezone);
046                else if(first=='y') return DayOfYear.call(pc,date,strTimezone);
047                else if(first=='d') return Day.call(pc,date,strTimezone);
048                else if(first=='h') return Hour.call(pc,date,strTimezone);
049                else if(first=='n') return Minute.call(pc,date,strTimezone);
050                else if(first=='s') return Second.call(pc,date,strTimezone);
051                else if(first=='l') return MilliSecond.call(pc, date,strTimezone);      
052                throw new ExpressionException("invalid datepart type ["+datepart+"] for function datePart");
053        }
054}