Utils/test/ExprEvalPopen_t.cpp

0001 #include "CommonTools/Utils/src/popenCPP.h"
0002 #include "FWCore/Utilities/interface/Exception.h"
0003 #include <iostream>
0004 #include <string>
0005
0006 using namespace reco::exprEvalDetails;
0007
0008 int main() {
0009   try {
0010     char c;
0011     {
0012       auto ss = popenCPP("c++ -v 2>&1");
0013       while (ss->get(c))
0014         std::cout << c;
0015       std::cout << std::endl;
0016     }
0017
0018     {
0019       auto n1 = execSysCommand("c++ -v");
0020       std::cout << "\n|" << n1 << '|' << std::endl;
0021     }
0022
0023     std::cout << "\n|" << execSysCommand("uuidgen | sed 's/-//g'") << '|' << std::endl;
0024
0025     std::cout << "\n|" << execSysCommand("notexisting 2>&1") << '|' << std::endl;
0026
0027   } catch (cms::Exception const& e) {
0028     std::cout << e.what() << std::endl;
0029   } catch (...) {
0030     std::cout << "unknown error...." << std::endl;
0031   }
0032
0033   return 0;
0034 }