Replacing string by using RegExp or String class only
/**
* Copyright Fumio ( http://wonderfl.net/user/Fumio )
* MIT License ( http://www.opensource.org/licenses/mit-license.php )
* Downloaded from: http://wonderfl.net/c/7CcH
*/
package {
import flash.display.Sprite;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
import flash.utils.getTimer;
[SWF(width = "240",height = "180")]
public class StringAndRegExpTest extends Sprite {
private const COUNT:int = 1000000;
private const PI:Number = Math.PI;
private var started:uint;
private var my_txt:TextField = new TextField();
private var label_txt:TextField = new TextField();
public function StringAndRegExpTest() {
// Creating a TextField for display
createTextField();
// Starting test
var test_str:String = "すもももももももももももいろいろ";
var find_str:String = "もも";
var replace_str:String = "みみ";
useRegExp(test_str, find_str, replace_str);
use_indexOf(test_str, find_str, replace_str);
use_split_join(test_str, find_str, replace_str);
}
private function useRegExp(test_str:String, find_str:String, replace_str:String):void {
started = getTimer();
for (var i:int = 0; i < COUNT; i++) {
replaceByRegExp(test_str, find_str, replace_str);
}
xTrace(getTimer() - started);
}
private function use_indexOf(test_str:String, find_str:String, replace_str:String):void {
started = getTimer();
for (var i:int = 0; i < COUNT; i++) {
replaceBy_indexOf(test_str, find_str, replace_str);
}
xTrace(getTimer() - started);
}
private function use_split_join(test_str:String, find_str:String, replace_str:String):void {
started = getTimer();
for (var i:int = 0; i < COUNT; i++) {
replaceBy_split_join(test_str, find_str, replace_str);
}
xTrace(getTimer() - started);
}
private function replaceByRegExp(test_str:String, find_str:String, replace_str:String):void {
var pattern:RegExp = new RegExp(find_str, "g");
var result_str:String = test_str.replace(pattern, replace_str);
}
private function replaceBy_indexOf(test_str:String, find_str:String, replace_str:String):void {
var numChar:uint = find_str.length;
var end:uint;
var result_str:String = "";
for (var i:uint = 0; -1 < (end = test_str.indexOf(find_str, i)); i = end + numChar) {
result_str += test_str.substring(i, end) + replace_str;
}
result_str += test_str.substring(i);
}
private function replaceBy_split_join(test_str:String, find_str:String, replace_str:String):void {
var result_str:String = test_str.split(find_str).join(replace_str);
}
private function createTextField():void {
addChild(my_txt);
addChild(label_txt);
my_txt.x += 20;
my_txt.autoSize = TextFieldAutoSize.RIGHT;
label_txt.autoSize = TextFieldAutoSize.LEFT;
label_txt.text = "RegExp class:\nString class:\nsplit() and join():";
}
private function xTrace(n:int):void {
my_txt.appendText(String(n) + "\n");
}
}
}