/* Bi-directional popen. * * Author: Steffen Vogel * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University * SPDX-License-Identifier: Apache-2.0 */ #pragma once #include #include #include #include #include #include #include #include namespace villas { namespace utils { class Popen { public: using arg_list = std::vector; using env_map = std::map; using char_type = char; using stdio_buf = __gnu_cxx::stdio_filebuf; Popen(const std::string &cmd, const arg_list &args = arg_list(), const env_map &env = env_map(), const std::string &wd = std::string(), bool shell = false); ~Popen(); void open(); int close(); void kill(int signal = SIGINT); int getFdIn() { return fd_in; } int getFdOut() { return fd_out; } pid_t getPid() const { return pid; } protected: std::string command; std::string working_dir; arg_list arguments; env_map environment; bool shell; pid_t pid; int fd_in, fd_out; }; class PopenStream : public Popen { public: PopenStream(const std::string &cmd, const arg_list &args = arg_list(), const env_map &env = env_map(), const std::string &wd = std::string(), bool shell = false); ~PopenStream(); std::istream &cin() { return *(input.stream); } std::ostream &cout() { return *(output.stream); } void open(); int close(); protected: struct { std::unique_ptr stream; std::unique_ptr buffer; } input; struct { std::unique_ptr stream; std::unique_ptr buffer; } output; }; } // namespace utils } // namespace villas template std::istream &operator>>(villas::utils::PopenStream &po, T &value) { return *(po.input.stream) >> value; }