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 cjustify 021 */ 022package lucee.runtime.functions.string; 023 024import lucee.runtime.PageContext; 025import lucee.runtime.exp.ExpressionException; 026import lucee.runtime.exp.FunctionException; 027import lucee.runtime.exp.PageException; 028import lucee.runtime.functions.BIF; 029import lucee.runtime.op.Caster; 030 031public final class CJustify extends BIF { 032 033 private static final long serialVersionUID = -4145093552477680411L; 034 035 public static String call(PageContext pc , String string, double length) throws ExpressionException { 036 int len=(int)length; 037 if(len<1) throw new ExpressionException("Parameter 2 of function cJustify which is now ["+len+"] must be a non-negative integer"); 038 else if((len-=string.length())<=0) return string; 039 else { 040 041 char[] chrs=new char[string.length()+len]; 042 int part=len/2; 043 044 for(int i=0;i<part;i++)chrs[i]=' '; 045 for(int i=string.length()-1;i>=0;i--)chrs[part+i]=string.charAt(i); 046 for(int i=part+string.length();i<chrs.length;i++)chrs[i]=' '; 047 048 return new String(chrs); 049 } 050 } 051 052 @Override 053 public Object invoke(PageContext pc, Object[] args) throws PageException { 054 if(args.length==2) 055 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1])); 056 throw new FunctionException(pc, "CJustify", 2, 2, args.length); 057 } 058} 059 060 061 062 063 064 065 066 067 068 069