Method read

src/process.cpp:397–435

}

void process::read(const writer& output) const
{
#ifdef _WIN32
    // clang-format off
    constexpr std::string_view filename = "stdout";
    auto tmp = tmp_dir{};
    HANDLE handle = CreateFile((tmp.path / filename).string().c_str(),
                               GENERIC_READ | GENERIC_WRITE,
                               0,
                               nullptr,
                               CREATE_ALWAYS,
                               FILE_ATTRIBUTE_NORMAL,
                               nullptr);
    impl->check_exec(impl->command, impl->cwd.string(), impl->args, impl->envs,
                     handle == nullptr or handle == INVALID_HANDLE_VALUE ?
                                     GetStdHandle(STD_OUTPUT_HANDLE) : handle);
    CloseHandle(handle);
    handle = CreateFile((tmp.path / filename).string().c_str(),
                        GENERIC_READ | GENERIC_WRITE,
                        0,
                        nullptr,
                        OPEN_EXISTING,
                        FILE_ATTRIBUTE_NORMAL,
                        nullptr);
    if(handle == nullptr or handle == INVALID_HANDLE_VALUE)
        MIGRAPHX_THROW("Unable to open file: " + (tmp.path / filename));
    auto size = GetFileSize(handle, nullptr);
    std::string result(size, '\0');
    if(ReadFile(handle, result.data(), size, nullptr, nullptr) == FALSE)
        MIGRAPHX_THROW("Failed reading file: " + (tmp.path / filename));
    CloseHandle(handle);
    // clang-format on
#else
    std::stringstream ss;
    impl->check_exec(impl->get_command(), redirect_to(ss));
    auto result = ss.str();
#endif
    output(result.data(), result.size());
}

void process::exec()
{