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 listappend 021 */ 022package lucee.runtime.functions.list; 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 ListAppend extends BIF { 031 032 private static final long serialVersionUID = -4893447489733907241L; 033 034 public static String call(PageContext pc , String list, String value) { 035 if(list.length()==0) return value; 036 return new StringBuilder(list).append(',').append(value).toString(); 037 } 038 public static String call(PageContext pc , String list, String value, String delimiter) { 039 if(list.length()==0) return value; 040 switch(delimiter.length()) { 041 case 0:return list; 042 case 1:return new StringBuilder(list).append(delimiter).append(value).toString(); 043 } 044 return new StringBuilder(list).append(delimiter.charAt(0)).append(value).toString(); 045 } 046 047 @Override 048 public Object invoke(PageContext pc, Object[] args) throws PageException { 049 if(args.length==2) 050 return call(pc, Caster.toString(args[0]), Caster.toString(args[1])); 051 if(args.length==3) 052 return call(pc, Caster.toString(args[0]), Caster.toString(args[1]), Caster.toString(args[2])); 053 054 throw new FunctionException(pc, "ListAppend", 2, 3, args.length); 055 } 056 057}