Parse a boolean flag. Returns `true` if the parsing succeeded, `false` otherwise.
| 52 | // Parse a boolean flag. Returns `true` if the parsing succeeded, `false` |
| 53 | // otherwise. |
| 54 | bool parse_bool_flag(Flag<bool>& flag, bool is_short_flag, |
| 55 | const std::string& token) { |
| 56 | if (is_short_flag) { |
| 57 | flag.value() = true; |
| 58 | return true; |
| 59 | } |
| 60 | |
| 61 | const std::string raw_flag(token); |
| 62 | size_t equal_index = raw_flag.find('='); |
| 63 | if (equal_index == std::string::npos) { |
| 64 | flag.value() = true; |
| 65 | return true; |
| 66 | } |
| 67 | |
| 68 | const std::string value = raw_flag.substr(equal_index + 1); |
| 69 | if (value == "true") { |
| 70 | flag.value() = true; |
| 71 | return true; |
| 72 | } |
| 73 | |
| 74 | if (value == "false") { |
| 75 | flag.value() = false; |
| 76 | return true; |
| 77 | } |
| 78 | |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | // Parse a uint32_t flag value. |
| 83 | bool parse_flag_value(Flag<uint32_t>& flag, const std::string& value) { |