001 package railo.runtime.functions.arrays; 002 003 import railo.runtime.PageContext; 004 import railo.runtime.exp.ExpressionException; 005 import railo.runtime.exp.FunctionException; 006 import railo.runtime.exp.PageException; 007 import railo.runtime.functions.BIF; 008 import railo.runtime.op.Caster; 009 import railo.runtime.type.Array; 010 import railo.runtime.type.ArrayImpl; 011 012 public final class ArrayMid extends BIF { 013 014 private static final long serialVersionUID = 4996354700884413289L; 015 016 public static Array call(PageContext pc , Array arr, double start) throws ExpressionException { 017 return call(pc,arr,start,-1); 018 } 019 020 public static Array call(PageContext pc , Array arr, double start, double count) throws ExpressionException { 021 int s=(int) start; 022 int c=(int) count; 023 024 if(s<1) throw new FunctionException(pc, "ArrayMid", 2, "start", "Parameter which is now ["+s+"] must be a positive integer"); 025 if(c==-1) c=arr.size(); 026 else if(c<-1) throw new FunctionException(pc, "ArrayMid", 3, "count", "Parameter which is now ["+c+"] must be a non-negative integer or -1 (for string length)"); 027 c+=s-1; 028 if(s>arr.size()) return new ArrayImpl(); 029 030 ArrayImpl rtn = new ArrayImpl(); 031 int len = arr.size(); 032 Object value; 033 for(int i=s;i<=c && i<=len ;i++){ 034 value=arr.get(i, null); 035 rtn.appendEL(value); 036 } 037 return rtn; 038 } 039 040 @Override 041 public Object invoke(PageContext pc, Object[] args) throws PageException { 042 if(args.length==2)return call(pc,Caster.toArray(args[0]),Caster.toDoubleValue(args[1])); 043 return call(pc,Caster.toArray(args[0]),Caster.toDoubleValue(args[1]),Caster.toDoubleValue(args[2])); 044 } 045 }