Function read_file

smallthinker/common/arg.cpp:48–56

};

static std::string read_file(const std::string & fname) {
    std::ifstream file(fname);
    if (!file) {
        throw std::runtime_error(string_format("error: failed to open file '%s'\n", fname.c_str()));
    }
    std::string content((std::istreambuf_iterator<char>(file)), std::istreambuf_iterator<char>());
    file.close();
    return content;
}

static void write_file(const std::string & fname, const std::string & content) {
    std::ofstream file(fname);