文字列の中から指定した正規表現にマッチするものを見つける

StringUtil.find.as

function find(source:String, pattern:RegExp, callback:Function = null):Array {
  var indices:Array = new Array();
	var result:Object;
	var i:int = -1;
	while (result = pattern.exec(source)) {
		++i;
		if (callback != null) callback.call(null, i, result);
		indices.push(result.index);
		if (!pattern.global) break;
	}
	return indices;
}

/* TEST CODE*/
function callback(index:int, result:Object):void {
	trace("index : " + index);
	trace("  result.index     = " + result.index);
	trace("  result.result[0] = " + result[0]);
	trace("");
}

var indices:Array = find(",*あいうえおABCDE漢字123", /[\u0020-\u007e]+/g, callback);
trace("indices = [" + indices.join(", ") + "]");

index : 0
result.index = 0
result.result[0] = ,*

index : 1
result.index = 7
result.result[0] = ABCDE

index : 2
result.index = 14
result.result[0] = 123

indices = [0, 7, 14]