/**
* Implements the CFML Function removechars
*/
package railo.runtime.functions.string;
import railo.runtime.PageContext;
import railo.runtime.exp.ExpressionException;
import railo.runtime.ext.function.Function;
public final class RemoveChars implements Function {
public static String call(PageContext pc , String str, double s, double l) throws ExpressionException {
int start=(int) s;
int length=(int) l;
int strLength=str.length();
// check param 2
if(start<1 || start>strLength)
throw new ExpressionException("Parameter 2 of function removeChars which is now ["+start+"] must be a greater 0 and less than the length of the first parameter");
// check param 3
if(length<0)
throw new ExpressionException("Parameter 3 of function removeChars which is now ["+length+"] must be a non-negative integer");
if(strLength==0) return "";
String rtn=str.substring(0,start-1);
if(start+length<=strLength) rtn+=str.substring(start+length-1);
return rtn;
}
}