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 stripcr
021 */
022package lucee.runtime.functions.other;
023
024import lucee.runtime.PageContext;
025import lucee.runtime.exp.FunctionException;
026import lucee.runtime.exp.PageException;
027import lucee.runtime.functions.BIF;
028import lucee.runtime.op.Caster;
029
030public final class StripCr extends BIF {
031
032        private static final long serialVersionUID = 1101162964675776635L;
033
034        public static String call(PageContext pc , String string) {
035                StringBuilder sb=new StringBuilder(string.length());
036                int start=0;
037                int pos=0;
038                
039                while((pos=string.indexOf('\r',start))!=-1) {
040                        sb.append(string.substring(start,pos));
041                        start=pos+1;
042                }
043                if(start<string.length())sb.append(string.substring(start,string.length()));
044                
045                return sb.toString();
046        }
047
048    @Override
049        public Object invoke(PageContext pc, Object[] args) throws PageException {
050        if(args.length==1)
051                        return call(pc, Caster.toString(args[0]));
052        
053                throw new FunctionException(pc, "StripCr", 1, 1, args.length);
054        }       
055}