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// Copyright (c) 2015 Egor Tensin <egor@tensin.name>
// This file is part of the "Windows 7 drivers" project.
// For details, see https://github.com/egor-tensin/windows7-drivers
// Distributed under the MIT License.
#include "service/all.hpp"
#include <Windows.h>
#include <string>
namespace service {
namespace windows_error {
std::string Category::message(int code) const {
char* buf_ptr;
const auto nbwritten = FormatMessageA(
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
code,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
reinterpret_cast<char*>(&buf_ptr),
0,
NULL
);
if (0 == nbwritten) {
LocalFree(buf_ptr);
return "Couldn't format the error message";
}
std::string str(buf_ptr, nbwritten - 2);
LocalFree(buf_ptr);
return str;
}
} // namespace windows_error
} // namespace service
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