source: code/Website/open-flash-chart/NumberUtils.as@ 7937

package {
        public class NumberUtils {


                public static function formatNumber (i:Number) : String{
                        var format:NumberFormat = NumberFormat.getInstance(null);
                        return NumberUtils.format (i, 
                                format.numDecimals, 
                                format.isFixedNumDecimalsForced, 
                                format.isDecimalSeparatorComma,
                                format.isThousandSeparatorDisabled 
                        );
                } 
                
                public static function formatNumberY2 (i:Number) : String{
                        var format:NumberFormat = NumberFormat.getInstanceY2(null);
                        return NumberUtils.format (i, 
                                format.numDecimals, 
                                format.isFixedNumDecimalsForced, 
                                format.isDecimalSeparatorComma,
                                format.isThousandSeparatorDisabled 
                        );
                }       

                public static function format( 
                        i:Number, 
                        numDecimals:Number,
                        isFixedNumDecimalsForced:Boolean, 
                        isDecimalSeparatorComma:Boolean,
                        isThousandSeparatorDisabled:Boolean 
                ) : String {
                        if ( isNaN (numDecimals )) {
                                numDecimals = 4;
                        }
                        
                        // round the number down to the number of
                        // decimals we want ( fixes the -1.11022302462516e-16 bug)
                        i = Math.round(i*Math.pow(10,numDecimals))/Math.pow(10,numDecimals);
                        
                        var s:String = '';
                        var num:Array;
                        if( i<0 )
                                num = String(-i).split('.');
                        else
                                num = String(i).split('.');
                        
                        //trace ("a: " + num[0] + ":" + num[1]);
                        var x:String = num[0];
                        var pos:Number=0;
                        var c:Number=0;
                        for(c=x.length-1;c>-1;c--)
                        {
                                if( pos%3==0 && s.length>0 )
                                {
                                        s=','+s;
                                        pos=0;
                                }
                                pos++;
                                        
                                s=x.substr(c,1)+s;
                        }
                        if( num[1] != undefined ) {
                                if (isFixedNumDecimalsForced){
                                        num[1] += "0000000000000000";
                                }
                                s += '.'+ num[1].substr(0,numDecimals);
                        } else {
                                if (isFixedNumDecimalsForced && numDecimals>0){
                                        num[1] = "0000000000000000";
                                        s += '.'+ num[1].substr(0,numDecimals);                 
                                }
                                
                        }
                                
                        if( i<0 )
                                s = '-'+s;
                        
                        if (isThousandSeparatorDisabled){
                                s=s.replace (",","");
                        }
                        
                        if (isDecimalSeparatorComma) {
                                s = toDecimalSeperatorComma(s);
                        }                       
                        return s;
                }
                
                public static function toDecimalSeperatorComma (value:String) : String{
                        return value
                                .replace(".","|")
                                .replace(",",".")
                                .replace("|",",")
                }

        }
}