mirror of
https://github.com/FairRootGroup/FairMQ.git
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83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/********************************************************************************
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* Copyright (C) 2017 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
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* *
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* This software is distributed under the terms of the *
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* GNU Lesser General Public Licence (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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#ifndef FAIR_MQ_TOOLS_PROCESS_H
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#define FAIR_MQ_TOOLS_PROCESS_H
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#include <boost/process.hpp>
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#include <string>
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namespace fair
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{
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namespace mq
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{
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namespace tools
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{
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/**
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* Result type for execute function. Holds captured stdout output and exit code.
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*/
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struct execute_result
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{
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std::string console_out;
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int exit_code;
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};
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/**
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* Execute given command in forked process and capture stdout output
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* and exit code.
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*
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* @param[in] cmd Command to execute
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* @param[in] log_prefix How to prefix each captured output line with
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* @return Captured stdout output and exit code
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*/
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inline execute_result execute(std::string cmd, std::string prefix = "")
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{
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execute_result result;
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std::stringstream out;
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// print full line thread-safe
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std::stringstream printCmd;
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printCmd << prefix << cmd << "\n";
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std::cout << printCmd.str() << std::flush;
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out << prefix << cmd << std::endl;
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// Execute command and capture stdout, add prefix line by line
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boost::process::ipstream stdout;
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boost::process::child c(cmd, boost::process::std_out > stdout);
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std::string line;
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while (getline(stdout, line))
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{
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// print full line thread-safe
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std::stringstream printLine;
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printLine << prefix << line << "\n";
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std::cout << printLine.str() << std::flush;
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out << prefix << line << "\n";
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}
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c.wait();
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// Capture exit code
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result.exit_code = c.exit_code();
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out << prefix << " Exit code: " << result.exit_code << std::endl;
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result.console_out = out.str();
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// Return result
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return result;
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}
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} /* namespace tools */
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} /* namespace mq */
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} /* namespace fair */
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#endif /* FAIR_MQ_TOOLS_PROCESS_H */
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