Flex中文转拼音

package
{
        import flash.utils.ByteArray;

        /**
         * ...
         * @author Will Chen
         * @msn [e-mail]
         * @email [e-mail]
         * @version 1.0
         * @description Convert Chinese to abc.
         */
       
        public class ChineseConvert
        {               
                /**
                 * 获取一串中文的拼音字母
                 * @param        chinese        <string>Unicode格式的中文字符串
                 * @return                        <string>拼音声母字符串
                 * @example
                 * var chinese:String = "中华人民共和国";
                 * var py:String = Convert.convertString(chinese);
                 * trace(py);        //zhrmghg
                 */
                public static function convertString(chinese:String):String
                {
                        var len:int = chinese.length;
                        var ret:String = "";
                        for (var i:int = 0; i < len; i++)
                        {
                                ret += convertChar(chinese.charAt(i));
                        }
                        return ret;
                }
               
                /**
                 *
                 * @param        char        <String>Unicode格式的一个中文字符
                 * @return                        <String>中文字符的声母
                 * @example
                 * var chineseChar:String = "我";
                 * var py:String = Convert.convertChar(chineseChar);
                 * trace(py);        //w
                 */
                public static function convertChar(chineseChar:String):String
                {
                        var bytes:ByteArray = new ByteArray();
                        bytes.writeMultiByte(chineseChar.charAt(0), "cn-gb");
                        var n:int = bytes[0] << 8;
                        n += bytes[1];
                        if (isIn(0xB0A1, 0xB0C4, n)) return "a";
                        if (isIn(0XB0C5, 0XB2C0, n)) return "b";
                        if (isIn(0xB2C1, 0xB4ED, n)) return "c";
                        if (isIn(0xB4EE, 0xB6E9, n)) return "d";
                        if (isIn(0xB6EA, 0xB7A1, n)) return "e";
                        if (isIn(0xB7A2, 0xB8c0, n)) return "f";
                        if (isIn(0xB8C1, 0xB9FD, n)) return "g";
                        if (isIn(0xB9FE, 0xBBF6, n)) return "h";
                        if (isIn(0xBBF7, 0xBFA5, n)) return "j";
                        if (isIn(0xBFA6, 0xC0AB, n)) return "k";
                        if (isIn(0xC0AC, 0xC2E7, n)) return "l";
                        if (isIn(0xC2E8, 0xC4C2, n)) return "m";
                        if (isIn(0xC4C3, 0xC5B5, n)) return "n";
                        if (isIn(0xC5B6, 0xC5BD, n)) return "o";
                        if (isIn(0xC5BE, 0xC6D9, n)) return "p";
                        if (isIn(0xC6DA, 0xC8BA, n)) return "q";
                        if (isIn(0xC8BB, 0xC8F5, n)) return "r";
                        if (isIn(0xC8F6, 0xCBF0, n)) return "s";
                        if (isIn(0xCBFA, 0xCDD9, n)) return "t";
                        if (isIn(0xCDDA, 0xCEF3, n)) return "w";
                        if (isIn(0xCEF4, 0xD188, n)) return "x";
                        if (isIn(0xD1B9, 0xD4D0, n)) return "y";
                        if (isIn(0xD4D1, 0xD7F9, n)) return "z";
                        return "\0";
                }
               
                private static function isIn(from:int, to:int, value:int):Boolean
                { 
                        return ((value >= from) && (value <= to));
                }
               
                /**
                 *
                 * @param        chineseChar        <String>Unicode格式的一个中文字符
                 * @return                                <Boolean>是中文返回true,不是返回flase
                 */
                public static function isChinese(chineseChar:String):Boolean
                {
                        if (convertChar(chineseChar) == "\0")
                        {
                                return false;
                        }
                        return true;
                }
        }
}