A c++ implementation similar to Rust's std::process.
Following quick start is for linux and mac
- get the library to your directory
wget https://github.com/WesleyCh3n/process-cpp/raw/refs/heads/main/src/process.hpp
wget https://github.com/WesleyCh3n/process-cpp/raw/refs/heads/main/src/unix.cpp- create a new file named
example.cppwith following:
#include "process.hpp"
#include <iomanip>
#include <iostream>
int main(int argc, char *argv[]) {
auto output =
process::Command("sh").arg("-c").arg("echo hello world").output();
std::cout << std::boolalpha << output.status.success() << '\n';
std::cout << std::quoted(output.std_out) << '\n';
std::cout << std::quoted(output.std_err) << '\n';
}- Compile
c++ -std=c++20 -o example example.cpp unix.cpp./example
true
"hello world
"
""For more detail, check examples and process.hpp.
#include "process.hpp"
#include <iomanip>
#include <iostream>
int main() {
{
// windows. wait for output
Output output = Command("cmd").args({"/c", "echo hello world"}).output();
std::cout << std::quoted(output.std_out) << '\n';
std::cout << std::quoted(output.std_err) << '\n';
}
{
// unix. get child handle and wait for output
Child child = Command("sh")
.arg("-c")
.arg("echo hello world")
.std_out(Stdio::pipe())
.std_err(Stdio::pipe())
.spawn();
Output output = child.wait_with_output();
std::cout << std::quoted(output.std_out) << '\n';
std::cout << std::quoted(output.std_err) << '\n';
}
{
// write to process stdin
std::string app = "some_app_need_stdin";
auto child = Command(app).std_in(Stdio::pipe()).spawn();
std::vector<std::string> strs{"hello\n", "from\n", "parent\n"};
for (auto &str : strs) {
child.io_stdin->write(std::as_bytes(std::span{str}));
}
ExitStatus status = child.wait();
}
{
// pipe process one stdout to process 2 stdin
// p1.stdout -> p2.stdin
auto child1 = Command(app1).args(args1).std_out(Stdio::pipe()).spawn();
auto child2 = Command(app2)
.args(args2)
.std_in(Stdio::from(std::move(*child1.io_stdout)))
.spawn();
ExitStatus status = child2.wait();
}
}cmake -Bbuild .
cmake --build build -jFor more CMake options, see CMakeLists.txt
After test built,
ctest --output-on-failure --test-dir ./build/test/