Boost：通过boost::process::child完成带管道的调用

管道是经常使用的，比如：

$ cat file.txt 
this is data 1
this is date 1
this is data 2
this is date 2

$ cat file.txt | grep data
this is data 1
this is data 2

那么通过C++怎么实现这种管道调用呢，实际上boost有提供方法：

#include <boost/process.hpp>
#include <iostream>
#include <string>

inline std::tuple<int, std::string, std::vector<std::string>>
    execCmdWithPipe(std::string bin1Path, std::vector<std::string> bin1Args,
                    std::string bin2Path, std::vector<std::string> bin2Args)
    {
        namespace bp = boost::process;
        std::string cmdStr = bin1Path;
        for (const auto& arg : bin1Args)
        {
            cm