std::string expand_user()

in include/poac/io/file/path.hpp [18:34]

• 17 lines of code
• 5 McCabe index (conditional complexity)

    std::string expand_user(std::string path) {
        if (!path.empty() && path[0] == '~') {
            assert(path.size() == 1 or path[1] == '/');  // or other error handling
            const char* home = std::getenv("HOME");
            if (home || ((home = std::getenv("USERPROFILE")))) {
                path.replace(0, 1, home);
            }
            else {
                const char *hdrive = std::getenv("HOMEDRIVE"),
                        *hpath  = std::getenv("HOMEPATH");
                assert(hdrive);  // or other error handling
                assert(hpath);
                path.replace(0, 1, std::string(hdrive) + hpath);
            }
        }
        return path;
    }