/**
*
* Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
**/
/**
* Implements the CFML Function cjustify
*/
package lucee.runtime.functions.string;
import lucee.runtime.PageContext;
import lucee.runtime.exp.ExpressionException;
import lucee.runtime.exp.FunctionException;
import lucee.runtime.exp.PageException;
import lucee.runtime.ext.function.BIF;
import lucee.runtime.op.Caster;
public final class CJustify extends BIF {
private static final long serialVersionUID = -4145093552477680411L;
public static String call(PageContext pc , String string, double length) throws ExpressionException {
int len=(int)length;
if(len<1) throw new ExpressionException("Parameter 2 of function cJustify which is now ["+len+"] must be a non-negative integer");
else if((len-=string.length())<=0) return string;
else {
char[] chrs=new char[string.length()+len];
int part=len/2;
for(int i=0;i<part;i++)chrs[i]=' ';
for(int i=string.length()-1;i>=0;i--)chrs[part+i]=string.charAt(i);
for(int i=part+string.length();i<chrs.length;i++)chrs[i]=' ';
return new String(chrs);
}
}
@Override
public Object invoke(PageContext pc, Object[] args) throws PageException {
if(args.length==2)
return call(pc, Caster.toString(args[0]), Caster.toDoubleValue(args[1]));
throw new FunctionException(pc, "CJustify", 2, 2, args.length);
}
}