xpath 스트링에서 리프 노드를 제외하고 탐색하면서, 찾으려는 문자열이 일정 회수 반복될때까지 탐색한다.

xpath_string_parsing.js

const xpath = "//android.widget.FrameLayout/android.widget.FrameLayout[@index=‘0’]/android.widget.FrameLayout[@index=‘0’ and @resource-id=‘android:id/content’]/android.view.ViewGroup[@index=‘0’]/android.widget.LinearLayout[@index=‘0’ and @resource-id=‘com.android.packageinstaller:id/dialog_container’]/android.widget.LinearLayout[@index=‘1’]/android.widget.LinearLayout[@index=‘0’ and @resource-id=‘com.android.packageinstaller:id/button_group’]/android.widget.Button[@index=‘1’ and @resource-id=‘com.android.packageinstaller:id/permission_allow_button’]"

function getParentNode(arr, key, count) {
    let _count = 0;
    let line = 0;
    const _arr = arr.reverse();
    for (let chunk of _arr.slice(1, _arr.length - 1)) {
        line++;
        if (chunk.indexOf(key) > -1)
            _count++;

        if (_count == count)
            break;
    }

    return _arr.slice(0, line + 1).reverse()
}
const _split_pattern = new RegExp("(?<!id)/");

getParentNode( xpath.split(/(?<!id)\//).map(it => `/${it}`), '@resource-id', 2)