root/as3/Utils/src/org/libspark/utils/NumberUtil.as

/*======================================================================*//**
* 
* Utils for ActionScript 3.0
* 
* @author       Copyright (c) 2007 Spark project.
* @version      1.0.0
* 
* @see          http://utils.libspark.org/
* @see          http://www.libspark.org/
* 
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* 
* http://www.apache.org/licenses/LICENSE-2.0
* 
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, 
* either express or implied. See the License for the specific language
* governing permissions and limitations under the License.
* 
*//*=======================================================================*/
package org.libspark.utils {
        import flash.errors.IllegalOperationError;
        
        /**
         * Number オブジェクトのためのユーティリティクラスです
         */
        public class NumberUtil {
                
                /*======================================================================*//**
                * @private
                *//*=======================================================================*/
                public function NumberUtil() {
                        throw new IllegalOperationError( "NumberUtil クラスはインスタンスを生成できません。" );
                }
                
                
                
                
                
                /*======================================================================*//**
                * 数値を 1000 桁ごとにカンマをつけて返します。
                * @author       taka:nium
                * @param        number  変換したい数値です。
                * @return                       変換後の数値です。
                *//*=======================================================================*/
                static public function format( number:Number ):String {
                        var words:Array = String( number ).split( "" ).reverse();
                        var results:Array = new Array();
                        var l:int = words.length;
                        for ( var i:int = 0; i < l; i++ ) {
                                results.push( words[i] );
                                if ( i % 3 == 2 ) {
                                        results.push( "," );
                                }
                        }
                        return results.reverse().join( "" );
                }
                
                /*======================================================================*//**
                * 数値の桁数を 0 で揃えて返します。
                * @author       taka:nium
                * @param        number  変換したい数値です。
                * @param        figure  揃えたい桁数です。
                * @return                       変換後の数値です。
                *//*=======================================================================*/
                static public function digit( number:Number, figure:int ):String {
                        var str:String = String( number );
                        for ( var i:int = 0; i < figure; i++ ) {
                                str = "0" + str;
                        }
                        return str.substr( str.length - figure, str.length );
                }
        }
}