将postgresql时间戳转换为std::chrono值

#include <iostream>
#include <chrono>
#include <ctime>

std::chrono::time_point<std::chrono::system_clock> convertPostgreSQLTimestampToChrono(const std::string& timestamp) {
    // 将PostgreSQL时间戳转换为time_t类型
    std::tm tm = {};
    std::istringstream ss(timestamp);
    ss >> std::get_time(&tm, "%Y-%m-%d %H:%M:%S");

    std::time_t time = std::mktime(&tm);

    // 将time_t类型的时间戳转换为std::chrono::time_point类型的值
    return std::chrono::system_clock::from_time_t(time);
}

int main() {
    std::string postgresqlTimestamp = "2022-01-01 12:34:56";
    std::chrono::time_point<std::chrono::system_clock> chronoValue = convertPostgreSQLTimestampToChrono(postgresqlTimestamp);

    // 输出转换后的std::chrono::time_point值
    std::time_t time = std::chrono::system_clock::to_time_t(chronoValue);
    std::cout << std::ctime(&time);

    return 0;
}