actionscript 3.0작업중 trim 관련 함수를 찾아 보다 . 라이브러리에서 trim, replace 함수 구현 되어 있는
것을 발견 하게 되었음 .
package {
import flash.display.Sprite;
public class StringExample extends Sprite {
public function StringExample() {
var companyStr:String = new String(" Company X");
var productStr:String = "Product Z Basic ";
var emptyStr:String = " ";
var strHelper:StringHelper = new StringHelper();
var companyProductStr:String = companyStr + emptyStr + productStr;
trace("'" + companyProductStr + "'"); // ' Company X Product Z Basic '
companyProductStr = strHelper.replace(companyProductStr, "Basic", "Professional");
trace("'" + companyProductStr + "'"); // ' Company X Product Z Professional '
companyProductStr = strHelper.trim(companyProductStr, emptyStr);
trace("'" + companyProductStr + "'"); // 'Company X Product Z Professional'
}
}
}
class StringHelper {
public function StringHelper() {
}
public function replace(str:String, oldSubStr:String, newSubStr:String):String {
return str.split(oldSubStr).join(newSubStr);
}
public function trim(str:String, char:String):String {
return trimBack(trimFront(str, char), char);
}
public function trimFront(str:String, char:String):String {
char = stringToCharacter(char);
if (str.charAt(0) == char) {
str = trimFront(str.substring(1), char);
}
return str;
}
public function trimBack(str:String, char:String):String {
char = stringToCharacter(char);
if (str.charAt(str.length - 1) == char) {
str = trimBack(str.substring(0, str.length - 1), char);
}
return str;
}
public function stringToCharacter(str:String):String {
if (str.length == 1) {
return str;
}
return str.slice(0, 1);
}
}
StringHelper 클래스의 함수들이 static 타입이 아님으로 이렇게 사용 하면 오류가 발생 한다.
static타입으로 선언후 사용 하자 .
class StringHelper {
public static function replace(str:String, oldSubStr:String, newSubStr:String):String {
return str.split(oldSubStr).join(newSubStr);
}
public static function trim(str:String, char:String):String {
return trimBack(trimFront(str, char), char);
}
public static function trimFront(str:String, char:String):String {
char = stringToCharacter(char);
if (str.charAt(0) == char) {
str = trimFront(str.substring(1), char);
}
return str;
}
public static function trimBack(str:String, char:String):String {
char = stringToCharacter(char);
if (str.charAt(str.length - 1) == char) {
str = trimBack(str.substring(0, str.length - 1), char);
}
return str;
}
public static function stringToCharacter(str:String):String {
if (str.length == 1) {
return str;
}
return str.slice(0, 1);
}
}
