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 repeatstring 021 */ 022package lucee.runtime.functions.string; 023 024import lucee.commons.lang.StringUtil; 025import lucee.runtime.PageContext; 026import lucee.runtime.exp.ExpressionException; 027import lucee.runtime.exp.FunctionException; 028import lucee.runtime.exp.PageException; 029import lucee.runtime.functions.BIF; 030import lucee.runtime.op.Caster; 031 032public final class RepeatString extends BIF { 033 034 private static final long serialVersionUID = 6041471441971348584L; 035 036 public static String call(PageContext pc , String str, double count) throws ExpressionException { 037 if(count<0) throw new ExpressionException("Parameter 2 of function repeatString which is now ["+Caster.toString(count)+"] must be a non-negative integer"); 038 return StringUtil.repeatString(str,(int)count); 039 } 040 public static String _call(PageContext pc , String str, double count) throws ExpressionException { 041 int len=(int) count; 042 if(len<0) throw new ExpressionException("Parameter 2 of function repeatString which is now ["+len+"] must be a non-negative integer"); 043 char[] chars=str.toCharArray(); 044 StringBuilder cb=new StringBuilder(chars.length*len); 045 for(int i=0;i<len;i++)cb.append(chars); 046 return cb.toString(); 047 } 048 public static StringBuilder call(StringBuilder sb,String str, double count) throws ExpressionException { 049 int len=(int) count; 050 if(len<0) throw new ExpressionException("Parameter 1 of function repeatString which is now ["+len+"] must be a non-negative integer"); 051 052 for(int i=0;i<len;i++)sb.append(str); 053 return sb; 054 } 055 public static StringBuilder call(StringBuilder sb,char c, double count) throws ExpressionException { 056 int len=(int) count; 057 if(len<0) throw new ExpressionException("Parameter 1 of function repeatString which is now ["+len+"] must be a non-negative integer"); 058 059 for(int i=0;i<len;i++)sb.append(c); 060 return sb; 061 } 062 063 @Override 064 public Object invoke(PageContext pc, Object[] args) throws PageException { 065 if(args.length==2) 066 return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1])); 067 068 throw new FunctionException(pc, "RepeatString", 2, 2, args.length); 069 } 070}