| 18 | } |
| 19 | |
| 20 | bool looks_like_kernel_release(const std::string& release) { |
| 21 | if (release.size() < 3) return false; |
| 22 | if (!std::isdigit(static_cast<unsigned char>(release[0]))) return false; |
| 23 | |
| 24 | bool saw_dot = false; |
| 25 | bool saw_digit_after_dot = false; |
| 26 | for (std::size_t i = 0; i < release.size(); ++i) { |
| 27 | unsigned char c = static_cast<unsigned char>(release[i]); |
| 28 | if (std::isdigit(c)) { |
| 29 | if (saw_dot) saw_digit_after_dot = true; |
| 30 | continue; |
| 31 | } |
| 32 | if (release[i] == '.') { |
| 33 | saw_dot = true; |
| 34 | continue; |
| 35 | } |
| 36 | if (std::isalpha(c) || release[i] == '-' || release[i] == '_' || |
| 37 | release[i] == '+' || release[i] == '~') { |
| 38 | continue; |
| 39 | } |
| 40 | return false; |
| 41 | } |
| 42 | return saw_dot && saw_digit_after_dot; |
| 43 | } |
| 44 | |
| 45 | int score_banner(const std::string& banner, const std::string& release, |
| 46 | int release_count) { |