使用正则表达式regex_search在字符串中查找字符串

我有一个字符串：

string str = "C:/Riot Games/League of Legends/LeagueClientUx.exe" "--riotclient-auth-token=yvjM3_sRqdaFoETdKSt1bQ" "--riotclient-app-port=53201" "--no-rads" "--disable-self-update" "--region=EUW" "--locale=en_GB" "--remoting-auth-token=13bHJUl7M_u_CtoR7v8XeA" "--respawn-command=LeagueClient.exe" "--respawn-display-name=League of Legends" "--app-port=53230" "--install-directory=C:Riot GamesLeague of Legends" "--app-name=LeagueClient" "--ux-name=LeagueClientUx" "--ux-helper-name=LeagueClientUxHelper" "--log-dir=LeagueClient Logs" "--crash-reporting=crashpad" "--crash-environment=EUW1" "--crash-pipe=\.pipecrashpad_12076_CFZRMYHTBJGPBIUH" "--app-log-file-path=C:/Riot Games/League of Legends/Logs/LeagueClient Logs/2020-07-13T13-33-41_12076_LeagueClient.log" "--app-pid=12076" "--output-base-dir=C:Riot GamesLeague of Legends" "--no-proxy-server";

我想获取端口号和远程身份验证令牌，并使用以下代码完成：

#include <regex>
#include <iostream>
#include <string>
#include <Windows.h>
using namespace std;
string PrintMatch(std::string str, std::regex reg) {
smatch matches;
while (regex_search(str,matches,reg))
{
cout << matches.str(1) << endl;
break;
}
return matches.str(1);
}

int main() {

string str = "C:/Riot Games/League of Legends/LeagueClientUx.exe" "--riotclient-auth-token=yvjM3_sRqdaFoETdKSt1bQ" "--riotclient-app-port=53201" "--no-rads" "--disable-self-update" "--region=EUW" "--locale=en_GB" "--remoting-auth-token=13bHJUl7M_u_CtoR7v8XeA" "--respawn-command=LeagueClient.exe" "--respawn-display-name=League of Legends" "--app-port=53230" "--install-directory=C:Riot GamesLeague of Legends" "--app-name=LeagueClient" "--ux-name=LeagueClientUx" "--ux-helper-name=LeagueClientUxHelper" "--log-dir=LeagueClient Logs" "--crash-reporting=crashpad" "--crash-environment=EUW1" "--crash-pipe=\.pipecrashpad_12076_CFZRMYHTBJGPBIUH" "--app-log-file-path=C:/Riot Games/League of Legends/Logs/LeagueClient Logs/2020-07-13T13-33-41_12076_LeagueClient.log" "--app-pid=12076" "--output-base-dir=C:Riot GamesLeague of Legends" "--no-proxy-server";

regex reg("([0-9][0-9][0-9][0-9][0-9])");

string port = PrintMatch(str, reg);

regex reg1("(remoting-auth-token=[^d]*)");
string output = PrintMatch(str, reg1);





}

´

给我以下输出：

53201
remoting-auth-token=13bHJUl7M_u_CtoR7v8XeA--respawn-comman

端口号(53201(中的字符数没有改变，所以我成功地得到了它。然而，远程身份验证令牌会更改，因此我不知道在更改长度时如何成功获得它。

我想从远程授权令牌中获取这一部分："；13bHJUl7M_u_；，所以我可以把它存储在一个变量中，以便在我的应用程序中使用，就像我对端口号所做的那样。

期待您的来信！：(