void validate_package_name()

in include/poac/core/naming.hpp [167:216]

• 43 lines of code
• 7 McCabe index (conditional complexity)

    void validate_package_name(const std::string& s) {
        std::regex r1("^(\\/|\\-|_|\\d)+$");
        std::regex r2("^(\\/|\\-|_)$");
        std::regex r3("^.*(\\/|\\-|_){2,}.*$");
        std::regex r4("^([a-z|\\d|\\-|_|\\/]*)$");

        // only /, -, _, [0-9]
        if (std::regex_match(s, r1)) {
            throw exception::error(
                    "Invalid name.\n"
                    "It is prohibited to use / and -, _, number\n"
                    " only string of the project name.");
        }
        // /name, -name, _name, 0name
        else if (std::regex_match(std::string(1, s[0]), r2)) {
            throw exception::error(
                    "Invalid name.\n"
                    "It is prohibited to use / and -, _\n"
                    " at the begenning of the project name.");
        }
        // name/, name-, _name
        else if (std::regex_match(std::string(1, *(s.end()-1)), r2)) {
            throw exception::error(
                    "Invalid name.\n"
                    "It is prohibited to use / and -, _\n"
                    " at the last of the project name.");
        }
        // na--me, n/-ame, nam_-e
        else if (std::regex_match(s, r3)) {
            throw exception::error(
                    "Invalid name.\n"
                    "It is prohibited to use / and -, _\n"
                    " twice of the project name.");
        }
        // org/name/sub
        else if (std::count_if(s.begin(), s.end(), [](char c){ return c == '/'; }) > 1) {
            throw exception::error(
                    "Invalid name.\n"
                    "It is prohibited to use two\n"
                    " /(slashes) in a project name.");
        }
        // use the other than [a-z], [0-9], -, _, /
        else if (!std::regex_match(s, r4)) {
            throw exception::error(
                    "Invalid name.\n"
                    "It is prohibited to use a character string"
                    " that does not match ^([a-z|\\d|\\-|_|\\/]*)$\n"
                    " in the project name.");
        }
    }